Voltage-frequency conversion scheme and blood pressure measurement device equipped with above scheme

FIELD: electricity.

SUBSTANCE: voltage-frequency conversion scheme contains scheme of resistance-capacitance (RC) generator that consists of the first resistance element, the first capacitor, the second resistance element, the first logic scheme and the first switching element. Blood pressure measurement device contains cuff to be wrapped around the place of measurement for a person, pressure measurement tool to measure pressure in the above cuff, at that the tool contains a piezoresistive sensor (Rp1-Rp4) to generate pressure in compliance with cuff pressure and scheme of RC- generator.

EFFECT: creating high-accuracy scheme for voltage-frequency conversion.

5 cl, 9 dwg

 

The technical FIELD TO WHICH the INVENTION RELATES

The present invention relates to a scheme for conversion of the voltage-frequency and, in particular, to the schema of the resistive-capacitive (RC) oscillator.

The LEVEL of TECHNOLOGY

To convert the analog value into a digital value (A/D (analog-digital) conversion) is used to measure analog values, such as voltage, current, capacity, etc. There are different types of methods containing integration, serial approximatevalue and ΔΣ, while choosing the way of transformation, the most suitable for a given analog value. Integrated circuits (IC), comprising the above-mentioned schemes, industrial are made by various manufacturers.

However, the value of these IP high and the need to control the software.

In addition, if the resolution increase to perform high-precision measurements, the cost is usually higher by this amount.

In practice, the frequency allows for the most reliable and high-precision measurement, and therefore, when the use frequency is possibly A/D-conversion with low cost and high accuracy.

For example, in the pending patent application of Japan No. 9-113310 described sensor piezoresistive type, and describes methods for the correction of the change of the sensor and convert these changes in frequency.

In the pending patent application of Japan No. 10-104292 described sensor of the capacitive type, and describes the scheme to convert the capacitive component, which varies depending on the pressure in the frequency.

DOCUMENTARY REFERENCES TO prior art

PATENT DOCUMENTS

Patent document 1: pending patent application of Japan No. 9-113310

Patent document 2: pending patent application of Japan No. 10-104292

The INVENTION

The PURPOSE of the INVENTION

In the pending patent application of Japan No. 9-113310 described sensor piezoresistive type and the way in which the scheme is applied resistive-capacitive (CR) of the generator, but the selected complicated way to convert with the periodic calculation of the difference frequency generation, generated by the two schemes resistive-capacitive (CR) of the generator, and, therefore, there is a disadvantage of high cost. Touch capacitive device of the type described in the pending patent application of Japan No. 10-104292, characterized by disadvantages such as strong dependence on temperature characteristics and high cost.

MEANS of ACHIEVING OBJECTIVE

The aim of the present invention is to provide Vysokomol the th circuit converting the voltage-frequency on the basis of a simple method and device for measuring blood pressure, equipped with the said scheme.

In accordance with one aspect of the present invention is a conversion chart voltage-frequency contains the schema RC (resistive-capacitive) generator with capacitive component and a resistive component. The scheme of the RC oscillator provides an input to which is fed the input voltage, the first resistive element connected between the input and the first internal point of branching, the first capacitor with one electrode connected to the first internal point of branching, and the other electrode connected to the second internal point of branching, the second resistive element containing one conductive output connected to the first internal point of branching parallel to the first capacitor, the first logical circuit is connected with another conductive by the output of the second resistive element and connected between the first internal branching point and the second internal point of branching through the second resistive element, the second a logic circuit connected with the second internal point of branching, to output the oscillating signal in accordance with the output signal of the first logic circuit and the first switching element for electrical connection of the first inner branching points, which is connected with one electrode to the fixed e.g. the provision, in particular for charge and discharge of the first capacitor in accordance with the voltage level of the second internal branching points.

Input voltage preferably corresponds to the output voltage of the piezoresistive sensor type.

The first switching element, preferably, is conductive when the voltage level of the second internal point of branching is greater than or equal to the threshold value and the first internal point of branching, connected to one electrode electrically connected to a fixed voltage so that the first capacitor is discharged. The first switching element is non-conductive when the voltage level of the second internal point of branching is less than the threshold value, and the first internal point of branching, connected with one electrode connected to the input voltage, so that the first capacitor is charging.

In the schema are the third resistive element connected between the input and the third internal branching point, a second capacitor with one electrode connected to the third internal point of branching, and the other electrode connected to the fourth internal point of branching, and the fourth resistive element containing one conductive output connected to the third internal point of branching parallel to the second capacitor. The first logic circuit includes a first inverter circuit connected to the other conductive pickup the ohms of the second resistive element, and the exclusive OR circuit for receiving the input signal from the output of the third inverter circuit and another conductive conclusion of the fourth resistive element and to output the input signal to the second internal point of branching. The second logic circuit includes a second inverter connected between the second internal point of branching and the fourth internal branching point, and a third inverter circuit connected to the fourth internal point of branching. The scheme is additionally a second switching element for electrical connection of the third inner branching points connected to one electrode to the fixed voltage, for discharging the second capacitor in accordance with the voltage level of the fourth inner branching points.

In accordance with another aspect of the present invention, the device for measuring blood pressure includes a cuff for wrapping around a predefined measurement on the human dimension object and means for determining the pressure to determine the pressure cuff. The means for determining the pressure contains a piezoresistive sensor type for forming a voltage in accordance with the pressure cuff and the circuit RC oscillator containing a capacitive component and a resistive component. The scheme of the RC-oscillator is holding the input to which is fed the input voltage, the first resistive element connected between the input and the first internal point of branching, the first capacitor with one electrode connected to the first internal point of branching, and the other electrode connected to the second internal point of branching, the second resistive element containing one conductive output connected to the first internal point of branching parallel to the first capacitor, the first logical circuit is connected with another conductive by the output of the second resistive element and connected between the first internal branching point and the second internal point of branching through the second resistive element, the second logic circuit connected with the second internal the point of branching, to output the oscillating signal in accordance with the output signal of the first logic circuit and the first switching element for electrical connection of the first inner branching points, which is connected with one electrode to the fixed voltage to charge and discharge the first capacitor in accordance with the voltage level of the second internal branching points.

The TECHNICAL RESULT of the INVENTION

Mapping the voltage-frequency and device for measuring blood pressure in accordance with the present invention contain a first switching element, charging or discharge the first capacitor in accordance with the output signal of the first logic circuit. The charging time of the first capacitor is changed correspondingly to the input voltage applied to the input, and hence the frequency of the oscillating signal can be adjusted in a simple way.

BRIEF DESCRIPTION of DRAWINGS

Fig. 1 is an external perspective view of the sphygmomanometer 1 according to the embodiment of the present invention.

Fig. 2 is a block diagram representing a hardware configuration of the sphygmomanometer 1 according to the embodiment of the present invention.

Fig. 3 is a schematic diagram to describe the sensor 32 pressure piezoresistive type in accordance with the embodiment of the present invention.

Fig. 4 is a schematic diagram for describing conventional RC oscillator.

Fig. 5 is graphs illustrating the voltage level of each point of branching conventional RC oscillator.

Fig. 6 is a schematic diagram for describing the circuit 34 conversion voltage-frequency in accordance with the embodiment of the present invention.

Fig. 7 is graphs illustrating the voltage level of each point of the branching circuit 34 for converting the voltage-frequency in accordance with the embodiment of the present invention.

Fig. 8 is a schematic diagram of capisani circuit 34# convert voltage-frequency in accordance with a modification of the variant of implementation of the present invention.

Fig. 9 is graphs illustrating the voltage level of each point of the branching circuit 34# convert voltage-frequency in accordance with a modification of the variant of implementation of the present invention.

OPTION of carrying out the INVENTION

Embodiments of the present invention are described in detail below with reference to the drawings. The same position indicate on the figures the same or corresponding parts, the description of which is not repeated in the future.

<appearance and configuration>

In the future you will first describes the appearance and configuration of the device 1 blood pressure measurement (hereinafter called "the sphygmomanometer 1") in accordance with the embodiment of the present invention.

(Appearance)

Description of the sphygmomanometer 1 according to the embodiment of the present invention below with reference to Fig. 1.

As shown in Fig. 1, the sphygmomanometer 1 includes a main unit 10 and the cuff 20 to wrap on the wrist of a person-dimension object. The main unit 10 is attached to the cuff 20. The display unit 40 based on a liquid crystal or similar method, and the block 41 operational management to receive commands from a user (typically, human-dimension object) are located on the surface of the main unit 10. Nl is to 41 operational management contains many switches.

(Hardware configuration)

Description of the hardware configuration of the sphygmomanometer 1 according to the embodiment of the present invention below with reference to Fig. 2.

As shown in Fig. 2, the cuff 20 of the sphygmomanometer 1 includes a pneumatic chamber 21. Air chamber 21 is connected to a pneumatic system 30 of the air tube 31.

In addition to the display unit 40 and block 41 operational control main unit 10 includes a pneumatic system 30, a CPU (Central processing unit) 100 for controlling each unit in a centralized way and perform computational procedures of various types, a memory 42 for storing programs, designating a Central processing unit (CPU) 100 perform predetermined operations, and various types of data, non-volatile memory (e.g. flash memory) 43 for storing the measured blood pressure, the source 44 of the power supply to supply power to the Central processing unit (CPU) 100, or a similar device, the block 45 timing to perform the operation timing block 46 input/output data for external data input and buzzer 62 to emit a warning or a similar sound.

Block 41 operational control includes switch 41A power supply to receive input commands to enable or disable Pete the Oia, switch 41B measured for the team at the beginning of measurement, the switch 41C for receiving a command to terminate the measurement and switch 41D memory for receiving a command for reading data, such as blood pressure, stored in the flash memory 43. Block 41 operational management may also contain a switch ID (identification) (not shown)used to enter the ID (identifier) for identifying human-dimension object. Therefore, the recording and reading of data measurements can be made for everyone-dimension object.

Pneumatic system 30 includes a sensor 32 pressure to determine the pressure (cuff pressure) in the pneumatic chamber 21, the pump 51 to feed air into the pneumatic chamber 21 for discharge lip pressure, and the valve 52 to be opened and closed to release or locking of the air in the pneumatic chamber 21.

The main unit 10 further comprises an amplifier 33, a circuit 34 for converting the voltage-frequency (schema generation), the circuit 53 for controlling the drive of the pump and the circuit 54 of the actuator control valve with respect to the pneumatic system 30.

In this example, the sensor 32, the pressure is, for example, the pressure sensor of the piezoelectric type. The amplifier 33 amplifies the output voltage of the sensor 32, the pressure and wide the amplified voltage in the circuit 34 for converting the voltage-frequency. Scheme 34 conversion voltage-frequency outputs a signal having a frequency of oscillation corresponding to the output voltage of the sensor 32 pressure, amplified by the amplifier 33, the Central processing unit (CPU) 100. Scheme 34 conversion voltage-frequency described later. The amplifier 33 is made with the possibility of increasing difference as the difference between the voltage level (amplitude) of the output signal from the sensor 32 voltage has a small value, but, in particular, is not required if the difference between the voltage level (amplitude) of the output signal from the sensor 32 voltage has a large value, and you can choose the configuration direct connection to the sensor 32 of the pressure.

The Central processing unit (CPU) 100 converts the frequency of oscillation obtained from the circuit 34 for converting the voltage-frequency pressure, and determines the pressure. The circuit 53 for controlling the drive of the pump controls the drive of the pump 51 through the signal control supplied from the Central processing unit (CPU) 100. Scheme 54 of the control valve actuator performs the control of the opening/closing valve 52 according to the control signal supplied from the Central processing unit (CPU) 100.

The pump 51, the valve 52, the circuit 53 for controlling the drive of the pump and circuit 54 controls the valve actuator form the configuration of the adjustment mechanism 50 for adjusting lip pressure. The device deregulierung cuff pressure is not limited to the above mechanism.

For example, the block 46 I/o performs data reading and writing programs and data from/to a removable(th) medium(l) 132 entries. Block 46 I/o data can perform the transmission and reception of programs and data via communication to/from an external computer (not shown).

As shown in Fig. 1, the sphygmomanometer 1 according to the present embodiment includes a base unit 10 that is attached to the cuff 20, but the main unit 10 and the cuff 20 can be connected by an air tube (air tube 31 in Fig. 2), as is customary in brachial sphygmomanometer.

Air chamber 21 is located in the cuff 20, but fluid supplied to the cuff 20 is not limited to air and can be a liquid or gel. Alternatively, the filling medium is not limited to a fluid medium and may be a homogeneous fine particles, such as beads.

In the present embodiment, the preset measurement is the wrist, but not limited to the wrist and may be any other location, such as the shoulder.

The sensor 32, the pressure of the piezoelectric type in accordance with the embodiment of the present invention is described below using Fig. 3.

As shown in Fig. 3, the sensor 32 pressure contains resistive elements Rp1-Rp4, connected in parallel between the source of the ICOM power supply voltage Vd and ground voltage GND, which is a fixed voltage. Connecting the branching point between the resistor elements Rp1 and Rp2 is connected to the output side (+). Connecting the branching point between the resistor elements of Rp3 and Rp4 is connected to the output side (-). The pressure sensor resistive type generates a potential difference on the output, since the resistance value of each resistive element is changed correspondingly to the pressure. The sensor 32 pressure generates a voltage signal generated at the output circuit 34 for converting the voltage-frequency via the amplifier 33.

Hereinafter, first, describes the conventional RC oscillator.

The usual scheme of the RC oscillator is described below using Fig. 4.

As shown in Fig. 4(a), the usual scheme of the RC oscillator contains resistive elements 12, 13, scheme OR NOT 11A-11C and the capacitor 14.

The resistive element 13 is located between the point NA branching point NB branching. The resistive element 12 is located between the point NA branching and one side input point of branching schemes OR-NO 11A.

The tank 14 includes one electrode connected to the point NA branching, and the other electrode connected to a point NC branching. One side input of the input branching points scheme OR NOT 11A is connected to the point NA branching through the resistive element 12, the other side input connected to the voltage GND of the ground, which is a fixed voltage, and the logic xnor output in one side input of the input branching points scheme OR NOT 11B.

One side input of the input branching points scheme OR NOT 11B is connected to the output point of the branching scheme OR NOT 11A, and the other side input of the input branching points scheme OR NOT 11B is connected to the voltage GND of the ground, which is a fixed voltage, and the logic xnor is passed to a point NC branching scheme OR NOT 11C.

One side input of the input branching points scheme OR NOT 11C is connected to a point NC branching, and the other side input connected to the voltage GND of the ground, which is a fixed voltage, and the logic xnor is transmitted to the output point of the NB branch.

The other input point of the branching scheme OR NOT 11A, 11B, 11C are connected to the voltage GND of the ground. Therefore, each of the schemes OR NOT 11A, 11B, 11C performs the function of inverter circuits for inverting and outputting the input signal.

The following is a description of circuit operation RC oscillator.

The scheme of the RC oscillator is characterized by the generation frequency set by the time needed to reach the threshold scheme OR NOT 11A circuit time constant that contains the PE istiny element 13 and the capacitor 14.

In particular, if the input point of branching scheme OR NOT 11A is set at "L" (low) and the level at the output of the circuit OR NOT 11A becomes "H" (high), then at the point NB branching is also set to level "H" through the scheme OR NOT 11B, 11C.

If the capacitor 14 is charged and the voltage of the point NA branching reaches the level "H", one input point of a branching diagram OR-NO 11A reaches the level "H" level at the output of the circuit OR NOT 11A is changed. However, the level at the output of the circuit OR NOT 11A goes to level "H" to level "L", so that the point NB branching is also set to level "L" through the scheme OR NOT 11B, 11C.

In turn, when the electric charge accumulated in the capacitor 14, is discharged and the voltage level at the point NA branching becomes a level "L"level to one input point of a branching diagram OR-NO 11A is also "L", so that the level at the output of the circuit OR NOT 11A is changed from "L" to level "H". At the point NB branching is also set to level "H" through the scheme OR NOT 11B, 11C.

The operation of the charge and discharge operation is repeated, so the voltage at point NB branching alternately displayed with the level "L" and the level "H" and the operation of generation.

Next with reference to Fig. 5 describes the voltage level at each point of rasvet is possible conventional RC oscillator.

In Fig. 5 shows waveforms of the voltage at points NA, NB, NC branch.

Below is a description of the operation period of the charge and the operation of charge.

In Fig. 4(b) shows a diagram to describe the operation of typical charge circuit time constant, is configured by the value of resistance R and capacitance C.

In other words, the value of resistance R corresponds to the resistive component of the resistive element 13 in Fig. 4(a) and the container corresponds to the capacitance component of the capacitor 14 in Fig. 4(a).

The voltage Vo of the circuit time constant is expressed by the following equation.

Equation 1

,

,

A: constant of integration,

,

(1)

The initial condition for calculating A constant of integration is such that the voltage Vo is expressed in the following equation, if Vo = 0 at time t = 0.

Equation 2

,

,

(2)

On the other hand, the initial condition for the operation of the charge circuit RC oscillator shown in Fig. 4(a), is that the operation of the charge begins as soon as the voltage reaches Vth as a result of operation of the discharge. In other words, when the time t=0, the voltage Vo at the point Na branching becomes Vth-Vd.

Therefore, when the initial condition is substituted into equation (1), we get the following equation.

Equation 3

Vth-Vd=Vd-B(Vi=Vd),

,

(3)

The solution of the above equation relative to t gives the following equation.

Equation 4

,

(4)

When the voltage Vo is transmitted to the input point of branching scheme OR NOT 11A and reaches the threshold value Vth of the scheme OR NOT 11A, the output of the circuit OR NOT 11A is changed and set RA is the number of level "L". In other words, the time to reach the threshold value Vth of the gate OR NOT is the time when Vo=Vth. The threshold value Vth of the gate OR NOT expressed in the following equation by substituting in the above equation, since the threshold value Vth is usually 1/2 of the voltage Vd of the power source.

Equation 5

(5)

The time tc required for the operation of the charge is expressed in the following equation.

Equation 6

,

,

(6)

Below is illustrated the operation of the discharge.

In Fig. 4(c) shows a diagram to describe the operation of typical discharge circuit time constant, is configured by the value of resistance R and capacitance C.

In other words, the value of resistance R corresponds to the resistive component of the resistive element 13 in Fig. 4(a), and the capacitance is the capacitive component of condens the Torah 14 in Fig. 4(a).

The voltage Vo of the circuit time constant is expressed by the following equation.

Equation 7

,

,

,

,

(7)

The initial condition for the operation of the discharge circuit RC oscillator shown in Fig. 4(a), is that the discharge operation starts immediately after the voltage reaches Vth as a result of operation of charge. In other words, when the time t=0, the voltage Vo at the point Na branching becomes Vth+Vd.

Therefore, when the initial condition is substituted into equation (7), we get the following equation.

Equation 8

,

(8)

The solution of the above equation relative to t gives the following equation.

Equation 9

(9)

The time to reach the threshold value Vth of the gate OR NOT is the time when Vo = Vth. The threshold value Vth of the gate OR NOT expressed in the following equation by substituting in the above equation, since the threshold value Vth is usually 1/2 of the voltage Vd of the power source.

Equation 10

(10)

The time td required for the operation of discharge, expressed in the following equation.

Equation 11

(11)

Therefore, the circuit RC oscillator shown in Fig. 4(a), may obtain a pulse shape with a fill factor of 50%, as the scheme RC oscillator is characterized by a correlation time tc=td.

As explained above, the time equal to the sum of the time tc required for the operation of the charge, and the time td required for the operation of discharge is one period.

Therefore, the frequency of oscillation can be changed by changing the resistive component, a capacitive component and the like, as is evident from equations (6) and (11).

In the conventional touch device escosteguy apply the scheme RC oscillator and adopted a method of changing the oscillation frequency by changing the capacitance of the capacitor.

Scheme 34 conversion voltage-frequency in accordance with the embodiment of the present invention is described below with reference to Fig. 6.

As shown in Fig. 6, the circuit 34 for converting the voltage-frequency in accordance with the embodiment of the present invention contains resistive elements 12, 13, 16, scheme OR NOT 11A-11C, the capacitor 14 and the switching element 15.

The resistive element 16 is located between the input and the point N0 branching. The switching element 15 is located between the point N0 branching and ground voltage GND, which is a fixed voltage, and becomes conductive depending on the voltage level at point NC branching. The resistive element 13 is located between the point NO branching point NA branching. The resistive element 12 is located between the point NA branching and one side input point of branching schemes OR-NO 11A.

The condenser 14, containing one electrode connected to a point NA branching, and the other electrode connected to a point NC branching. One side input of the input branching points scheme OR NOT 11A is connected to the point NA branching through the resistive element 12, and the other side input connected to the voltage GND of the ground, which is a fixed voltage, and the result of the logical calculation excludes the YICHANG displayed in one side input of the input branching points scheme OR NOT 11B.

One side input of the input branching points scheme OR NOT 11B is connected with the output point of the branching scheme OR NOT 11A, and the other side input of the input branching points scheme OR NOT 11B is connected to the voltage GND of the ground, which is a fixed voltage, and the logic xnor is passed to a point NC branching scheme OR NOT 11S.

One side input of the input branching points scheme OR NOT 11P is connected to point NC branching, and the other side input connected to the voltage GND of the ground, which is a fixed voltage, and the logic xnor is transmitted to the output point of the NB branch.

Similar to the scheme RC oscillator in the present example, the frequency of oscillation is set by the time needed to reach the threshold scheme OR NOT 11A circuit time constant containing resistive elements 13, 16 and capacitor 14.

In particular, if the input point of the branching scheme OR NOT 11A is level "L", the signal at the output of the above circuit is set at level "H". Simultaneously, the signal at the output of the circuit OR NOT 11B is set at level "L"and the signal at the output of the circuit OR NOT 11C is set at level "H".

Because the voltage level at point NC branching is at the level "L", one ele is trod capacitor 14 is connected to the input through the resistive elements 13, 16, the voltage at the point NA branching is expressed in the following equation when the operation of the charge circuit time constant configured resistive elements 13, 16 and capacitor 14. In other words, as described above, the initial condition for the operation of the charge circuit RC oscillator is input, using equation (1).

The initial condition is such that the voltage Vo at the point NA branching was equal to Vth - Vd, when the time t = 0.

Equation 12

,(1)

t=0,,

,

,

(12)

The solution of the above equation relative to t gives the following equation.

Equation 13

(13)

The time to reach the threshold value Vth of the gate OR NOT is the time when Vo=Vth. The threshold value Vth of the valve AND IS, AND IS NOT expressed in the following equation by substituting in the above equation, since the threshold value Vth is usually 1/2 of the voltage Vd of the power source.

Equation 14

(14)

The time te required for the operation of the charge is expressed in the following equation.

Equation 15

(15)

When the charge voltage is transmitted to the input point of branching scheme OR NOT 11A and reaches the threshold value Vth of the scheme OR NOT 11A, the output of the circuit OR NOT 11A is changed and set to the level "L". Simultaneously, the signal at the output of the circuit OR NOT 11V goes from level "L" to level "H". The signal at the output of the circuit OR NOT 11C goes from level "H" to level "L".

The switching element 15 is conducting current (enabled) accordingly, the voltage level ("H") at the point NC branching when installing a signal at the output of the circuit OR NOT 11V on the level "H". Thereby electrically connected to the voltage GND of the ground, which is a fixed voltage, and the point N0 branching. The voltage at point NB of branching is expressed in the following equation is ri operation of the discharge circuit time constant, containing resistive element 13 and the capacitor 14.

Equation 16

(16)

In other words, equation (16) is the same as equation (11).

When an appropriate voltage is transmitted to the input point of branching scheme OR NOT 11A and becomes lower than the threshold value Vth of the scheme OR NOT 11A, the output of the circuit OR NOT 11A changes and goes from level "L" to level "H".

The signal at the output of the circuit OR NOT 11V goes from level "H" to level "L". The signal at the output of the circuit OR NOT 11C goes from level "L" to level "H".

The switching element 15 does not conduct current (off), respectively, the voltage level (level "L") at the point NC branching when installing a signal at the output of the circuit OR NOT 11V on the level "L". Thus, the voltage GND of the ground, which is a fixed voltage, and the point N0 branching electrically disconnected. However, one electrode of the capacitor 14 is connected to the input through the resistive elements 13, 16 and, therefore, performs the above described operation of the charge.

In other words, the signal at the output of the circuit OR NOT 11C is oscillatory signal of level "L"level "H"level "L", ... in accordance with the operation is Arada and discharge operation.

In scheme 34 conversion voltage-frequency in accordance with the present embodiment of the capacitive component and a resistive component of the capacitor 14 and the resistive elements 12, 13, 16 are fixed values, and the input voltage supplied to the input changes. The input voltage applied to the input is an output voltage outputted depending on the pressure of the pressure sensor.

Description voltage levels at each point of the branching circuit 34 for converting the voltage-frequency in accordance with the embodiment of the present invention described below using Fig. 7.

In Fig. 7 shows the voltage levels at the point NA branching and point NC branching.

In the configuration in accordance with the present embodiment, that is, in the configuration in which the input voltage of the input is changed, the charging time te is changed as shown in equation (15). The discharge time is not changed, since the capacitive component and a resistive component of the capacitor 14 and the resistive elements 12, 13 and 16 have fixed values. The value of resistance R in equation (15) corresponds to the sum of the values of the resistive components of the resistive elements 13, 16 in Fig. 6. The container corresponds to the capacitance component of the capacitor 14 in Fig. 6.

Since the time of RA is the number to the threshold circuit OR NOT 11A depends on the input voltage, the period of the oscillating signal changes the frequency of oscillation can be changed.

In other words, the circuit 34 for converting the voltage-frequency in accordance with the present embodiment is given a signal having a frequency of oscillation in accordance with the output voltage of the sensor 32, the pressure in the Central processing unit (CPU) 100, and a Central processing unit (CPU) 100 converts the frequency of oscillation in pressure determines the pressure.

Therefore, using a simple method you can create an inexpensive and high-precision mapping of the voltage-frequency. Using this scheme can also be implemented as a device to measure blood pressure.

In the configuration shown in Fig. 6, described circuit configuration, OR IS NOT, in which one of the input branching point connected to the voltage GND ground (level "L"), which is a fixed voltage, but you can use a configuration in which, instead of the schema OR scheme does NOT apply AND IS NOT connecting one of the input branching points to the voltage Vd (level "H") power source.

In the configuration shown in Fig. 6, the configuration described here, using diagrams OR-NO 11A-11C, in which the corresponding input point of branching is connected to the voltage GND of the ground, which is a fixed voltage, and therefore, you is anaysha function inverter circuits for inverting the logical level of the input signal. Therefore, you can choose the configuration in which the scheme OR NOT 11A-11C replaced the inverter circuits. In accordance with this configuration, it is possible to reduce the number of configuration elements of the scheme and it is possible to reduce the layout schema.

(Modification of option exercise)

Below using Fig. 8 shows the circuit description 34# convert voltage-frequency in accordance with a modification of the variant of implementation of the present invention.

As shown in Fig. 8, scheme 34# convert voltage-frequency in accordance with a modification of the variant of implementation of the present invention differs from the circuit 34 for converting the voltage-frequency described in Fig. 6, the fact that additionally contains the schema OR NOT 11D, the resistive elements 17, 20, 21, the switching element 18 and the capacitor 19.

In particular, the resistive element 17 is located between the input and the point N1 of the branch. The switching element 18 is located between the point N1 branching and a fixed voltage and becomes conductive/non-conductive depending on the voltage level at the point NB branching. The resistive element 20 is located between the point NE branching point N1 of the branch. The capacitor 19 has one electrode connected to a point NE branching, and the other electrode connected to a point NB branching. Scheme OR NOT 11D contains about the well entry point of branching, connected to the point NB branching, and other point of branching, is connected to a fixed voltage, and transmits the result of the logical calculation OR NOT in point ND branching. One conductive output resistive element 21 is connected to the point NE branching, and other conductive output connected to the input point of the branching scheme OR NOT 11B.

Scheme 11B OR does NOT receive an output signal of the circuit OR NOT 11A and the signal from point NE branching through a resistive element 21 and transmits the result of the logical calculation xnor point NC branching.

In the configuration in accordance with the above-described embodiment describes the method by which adjusts the charging time in accordance with the input voltage, so that the regulated period level "H" of the oscillating signal, but lower than in the configuration in accordance with a modification of this variant implementation of the described method, which is also governed the period of level "L" of the oscillating signal.

In particular, if the input point of the branching scheme OR NOT 11A is level "L", the signal at the output of the circuit OR NOT 11C is set at level "H". Simultaneously, the signal at the output of the circuit OR NOT 11B is set at level "L" and the signal at the output of the circuit OR NOT 11C is set at level "H". The signal at the output of the circuit which DOES NOT 11D is also set at level "L".

In this case in point, NC branching present level "L", and therefore, the switching element 15 is non-conductive. At the point NB branching present level "H", and therefore, the switching element 18 is conductive. Therefore, the voltage GND of the ground, which is a fixed voltage, and the point N1 branching electrically connected. In other words, the signal fed into the input point of branching through the resistive elements 20, 21 of the scheme OR NOT 11V, is set at level "L". Therefore, the scheme OR NOT 11B acts as an inverter circuit, as one of the input branching point is present, the level "L".

As the voltage level at point NC branching is level "L", the one electrode of the capacitor 14 is connected to the input through the resistive elements 13, 16, and executes the operation of charge, as in the above description. When the voltage at the point NA branching is passed in the input point of branching scheme OR NOT 11A when the operation of the charge reaches the threshold value Vth of the scheme OR NOT 11A, the output of the circuit OR NOT 11A is changed and set to the level "L". Simultaneously, the signal at the output of the circuit OR NOT 11V goes from level "L" to level "H". The signal at the output of the circuit OR NOT 11S goes from level "H" to level "L". The signal at the output of the circuit AND THE AND-NOT 11D goes from level "L" to level "H".

The switching element 15 becomes conductive (on), respectively, the voltage level (the level to the "H"point NC branching when installing a signal at the output of the circuit OR NOT 11V on the level "H". Thus runs the electrical connection voltage GND of the ground, which is a fixed voltage, to the point N0 branching. Simultaneously with this operation is performed discharge. In this case, the switching element 18 is non-conductive (off), the signal at the output of the circuit OR NOT 11C transferred from level "H" to level "L". Scheme OR NOT 11B performs the function of inverter circuits, as one of the input branching point is present, the level "L", since the signal at the output of the circuit OR NOT 11A has the level "L".

The signal at the output of the circuit OR NOT 11C has the level "L", and the voltage level at the point NB branching is at the level "L", so that one electrode of the capacitor 19 is connected to the input through the resistive elements 17, 20, and executes the operation of charge. When the voltage at point NE branching is passed in the input point of branching scheme OR NOT 11B in the result of the operation of the charge reaches the threshold value Vth of the scheme OR NOT 11B, the output of the circuit OR NOT 11B is changed and set to the level "L". Then, the switching element 15 becomes non-conductive (off). Therefore, grounding the voltage GND, which is a fixed voltage, and the point N0 branching electrically disconnected. However, one electrode of the capacitor 14 is connected to the input through the resistive elements 13, 16 and, therefore, performs the above described operation of the charge.

The level at the output of the circuit OR NOT 11S goes from level "L" to level "H" when the output of the circuit OR NOT 11V on the level "L". Therefore, the signal at the output of the circuit OR NOT is at the level "H" and the switching element 18 becomes conductive. However, the point N1 of the fork connects to the voltage GND of the ground. Consequently, the operation is performed discharge.

In other words, the signal at the output of the circuit OR NOT 11D is oscillatory signal of level "H"level "L"level "H"level "L", ... in accordance with operations of the charge and discharge operation.

Scheme 34# convert voltage-frequency in accordance with the present embodiment includes a resistive component and a capacitive component installed so that the charging time to achieve the point NE branching threshold value Vth scheme OR NOT 11V circuit time constant configured resistive elements 17, 20 and capacitor 19, was shorter than the discharge time at the point NA branch to achieve a level smaller or equal to the threshold value Vth with the volumes OR-NO 11A, circuit time constant configured resistive element 13 and a capacitor 14.

In scheme 34# convert voltage-frequency in accordance with the present embodiment of the capacitive component and a resistive component of the capacitors 14, 19 and resistive elements 12, 13, 16, 17, 20, 21 have fixed values, and the input voltage supplied to the input changes. The input voltage applied to the input, is the output voltage outputted in accordance with the pressure in the pressure sensor.

Description voltage levels at each point of branching circuits 34# convert voltage-frequency in accordance with a modification of the variant of implementation of the present invention is given below using Fig. 9.

In Fig. 9(a) shows the voltage levels at the point NA branching and point NE branching.

In the configuration in accordance with a modification of this variant implementation, that is, in the configuration in which changes an input voltage supplied from the input time tf of charge at the point NA branching and time tg of charge at the point NE branching changed. The discharge time is not changed, since the capacitive component and a resistive component of the capacitors 14, 19 and resistive elements 12, 13 16, 17, 20, 21 are fixed.

The following is a description about the charge time in NA branching time and charge at the point NE branching.

First, the description for the point NE branching.

Initial condition during charging is a condition that Vo equals 0-Vd, when t=0.

Consequently, the voltage at point NE branching can be expressed in the following equation, substituting the initial conditions.

Equation 17

,

,

,

(17)

Decision on t gives the following equation.

Equation 18

(18)

The time to reach the threshold value Vth of the valve OR is NOT a time when Vo=Vth.

Therefore, the time tg, necessary for the operation of the charge is expressed by the following equation.

Equation 19

(19)

The value of resistance R in equation (19) represents the total value of the resistive components of the resistive elements is s 17, 20, shown in Fig. 8. The container corresponds to the capacitance component of the capacitor 19 in Fig. 8.

The following is a description for the point NA branching.

First, the initial condition at the time of discharge at the point NA branching is such that Vo=Vth+Vd, when t=0.

Therefore, with regard to the point NA branching, to the point NA branching during discharge is true, the above equation (8).

As described above, scheme 34# convert voltage-frequency in accordance with the present embodiment includes a resistive component and a capacitive component installed so that the charging time to achieve the point NE branching threshold value Vth scheme OR NOT 11V circuit time constant configured resistive elements 17, 20 and capacitor 19, was shorter than the discharge time at the point NA branching to a voltage less than or equal to the threshold value Vth of the scheme OR NOT 11A, the circuit time constant is configured of the resistive element 13 and a capacitor 14.

Therefore, when in point NE branching threshold value Vth scheme OR NOT 11B, the point NA branching set the voltage higher than the threshold value Vth, by a preset voltage, as shown in Fig. 9.

First get the voltage, at the point when NE is istihaada threshold value Vth scheme OR NOT 11V.

In particular, the time tg when the voltage at point NE branching becomes Vth, substituted in equation (8).

Equation 20

,

,

,

,

(20)

The corresponding voltage is the voltage at the point NA branching, when the voltage at point NE branching becomes Vth.

The initial condition during the operation of charge at the point NA branching is such that Vo=-Vd, when t=0, and, consequently, the voltage at the point NA branching is expressed in the following equation when the initial condition is substituted into equation (1).

Equation 21

,

,

(21)

The solution relative to t, the time tf required for the operation of a charge, expressed as voltage.

Equation 22

(22)

The value of resistance R in equation (22) represents the total value of the resistive components of the resistive elements 13, 16, shown in Fig. 8. The container corresponds to the capacitance component of the capacitor 14 shown in Fig. 8.

Therefore, since the charging time to achieve the threshold scheme OR NOT 11A and schema OR NOT 11B depends on the input voltage, the period of the oscillating signal is changed and you can change the frequency of generation.

In other words, the Central processing unit (CPU) 100, a circuit 34# convert voltage-frequency in accordance with the present embodiment outputs the signal having the frequency of oscillation in accordance with the output voltage of the sensor 32, the pressure, and the Central processing unit (CPU) 100 converts the frequency of oscillation in pressure determines the pressure.

Therefore, using a simple method you can create an inexpensive and high-precision mapping of the voltage-frequency. Using this scheme can also be implemented as a device to measure blood pressure.

In the configuration in accordance with a modification of this variant, the implementation of the ing the charging time is controlled in accordance with an input voltage circuit time constant, configured resistive elements 13, 16 and capacitor 14, to adjust the period of level "H" of the oscillating signal at the point NB branching, and, in addition, the charging time is controlled in accordance with an input voltage circuit time constant configured resistive elements 17, 20 and capacitor 19 to adjust the period of level "L" of the oscillating signal at the point NB branching.

Generation frequency, perform the function of the oscillating signal circuit OR NOT 11D to output the inverted signal at the point NB branching is regulated.

In the configuration shown in Fig. 8, the described configuration schemes OR-NO 11A, 11C and 11D, in which one of the input branching point connected to the voltage GND ground (level "L"), which is a fixed voltage, but you can use a configuration in which, instead of the schema OR scheme does NOT apply AND IS NOT connecting one of the input branching points to the voltage Vd (level "H") power source.

In the configuration shown in Fig. 8, instead of the configuration schema OR-NO 11A, 11C and 11D, it is possible to select a configuration which includes an inverter circuit for inverting the logic level of the input signal. In accordance with this configuration, it is possible to reduce the number of configuration elements of the scheme, and it is possible to reduce the layout schema.

In accordance with the configuration of the modification of this variant implementation, the period of level "H" period of the level "L" of the oscillating signal is adjusted in accordance with the input voltage so that it is possible to provide a wide dynamic range, resulting in possible to realize more accurate mapping of the voltage-frequency. You can also implement a device to measure blood pressure using this schema.

Options for the implementation presented in this description are explanatory in all aspects and not subject to interpretation in the sense of limitations. Scope of the present invention is defined by the claims and not the foregoing description, and all modifications equivalent in meaning to the claims, should be considered as covered by the claims.

DESCRIPTION SYMBOLIC NOTATION

1 electronic sphygmomanometer

10 main unit

20 cuff

21 pneumatic chamber

30 pneumatic system

31 air tube

32 pressure sensor

33 amplifier

34, 34# mapping the voltage-frequency

40 display unit

41 unit operational management

41A power switch

41B measurement switch

41C switch

41D switch memory

42 memory

43 flash memory

44 power supply

45 unit of time

46 block input/output data

50 adjusting mechanism

51 pump

52 valve

53 control circuit of the pump drive

54 diagram of the actuator control valve

62 buzzer

100 CPU (Central processor)

132 recording media

1. Mapping the voltage-frequency containing:
the scheme (34) resistive-capacitive (RC) oscillator containing a capacitive component and a resistive component;
the scheme of the RC oscillator contains
the input to which is fed the input voltage,
the first resistive element (13, 16)connected between the input and the first internal point (NA) branching,
the first capacitor (14), containing one electrode connected to the first internal point of branching, and the other electrode connected to the second internal point (NC) branching,
a second resistive element (12)containing one conductive output connected to the first internal point of branching parallel to the first capacitor,
the first logical circuit (11A, 11B)connected with another conductive by the output of the second resistive element and connected between the first internal branching point and the second internal point of branching through the second resistive element,
the second logic circuit (11C)connected with the second internal point is the effect, to output the oscillating signal in accordance with the output signal of the first logic circuit, and
the first switching element (15) for electrical connection of the first inner branching points, which is connected with one electrode to the fixed voltage to charge and discharge the first capacitor in accordance with the voltage level of the second internal branching points.

2. Mapping the voltage-frequency under item 1, in which the input voltage matches the output voltage of the piezoresistive sensor type.

3. Mapping the voltage-frequency under item 1, in which
the first switching element is conductive, when the voltage level of the second internal point of branching is greater than or equal to the threshold value and the first internal point of branching, connected to one electrode electrically connected to a fixed voltage so that the first capacitor is discharged; and
the first switching element is non-conductive when the voltage level of the second internal point of branching is less than the threshold value, and the first internal point of branching, connected with one electrode connected to the input voltage, so that the first capacitor is charging.

4. Mapping the voltage-frequency under item 1, additionally containing:
the second capacitor (19), containing one electrode connected to the third internal point of branching, and the other electrode connected to the fourth internal point (NB) branching; and
the fourth resistive element (21), containing one conductive output connected to the third internal point of branching parallel to the second capacitor;
the first logic circuit includes a first inverter circuit (11A)connected with another conductive by the output of the second resistive element, and a circuit (11B) exclusive OR to receive the input signal from the output of the first inverter circuit and another conductive conclusion of the fourth resistive element and to output the second internal point of branching;
the second logic circuit includes a second inverter (11C)connected between the second internal point of branching and the fourth internal branching point, and a third inverter circuit (11D), connected to the fourth internal branching point; and
additionally, the second switching element (18) for electrical connection of the third inner branching points connected to one electrode to the fixed voltage, for discharging the second capacitor in accordance with the voltage level of the fourth is th inner branching points.

5. Device for measuring blood pressure, comprising:
cuff (20) to wrap around a predefined measurement on the human dimension object; and
means (32) for the determination of pressure to determine the pressure cuff;
the means for determining the pressure contains
sensor (Rp1-Rp4) piezoresistive type for forming a voltage in accordance with the pressure cuff, and
the scheme (34) RC oscillator containing a capacitive component and a resistive component; and
the scheme of the RC oscillator contains
the input to which is fed the input voltage,
the first resistive element (13, 16)connected between the input and the first internal point (NA) branching,
the first capacitor (14), containing one electrode connected to the first internal point of branching, and the other electrode connected to the second internal point of branching,
a second resistive element (12)containing one conductive output connected to the first internal point of branching parallel to the first capacitor,
the first logical circuit (11A, 11B)connected with another conductive by the output of the second resistive element and connected between the first internal branching point and the second internal point of branching through the second resistive element,
the second logic circuit (11C)connected with the WTO is Oh internal branching point, to output the oscillating signal in accordance with the output signal of the first logic circuit, and
the first switching element (15) for electrical connection of the first inner branching points, which is connected with one electrode to the fixed voltage to charge and discharge the first capacitor in accordance with the voltage level of the second internal branching points.



 

Same patents:

FIELD: radio communications engineering; mobile ground- and satellite-based communication systems.

SUBSTANCE: proposed modulator that incorporates provision for operation in single-channel mode with selected frequency modulation index m = 0.5 or m = 1.5, or in dual-channel mode at minimal frequency shift and without open-phase fault has phase-shifting voltage analyzer 1, continuous periodic signal train and clock train shaping unit 2, control voltage shaping unit 3 for switch unit 3, switch unit 3, switch unit 4, two amplitude-phase modulators 5, 6, phase shifter 7, carrier oscillator 8, and adder 9.

EFFECT: enlarged functional capabilities.

1 cl, 15 dwg

The invention relates to techniques for radio communication and can be used in mobile systems terrestrial and satellite communication

Deploying converter // 2153764
The invention relates to the field of automation and can be used for control of technological processes

The invention relates to techniques for radio communication and can be used in transmitting and receiving devices for the formation of linear frequency modulated (chirp) signal

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment. Device for diagnosing functional state of peripheral vessels contains unit of primary optic radiation sources, system of primary and secondary radiation transportation to biological tissue and back, optic-electronic system of secondary optic radiation registration, device of collection and translation of data to unit of processing diagnostics results. Unit of radiation sources is made in form of IR laser emitter and laser emitter driver. System of radiation transportation is made in form of bundle of optical fibres with branched instrument and single working part of one transmitting and two receiving fibres. System of secondary radiation registration is made in form of two identical channels of Doppler signal registration. Registration channels contain photoreceiver, current-voltage converter, high-pass filter, low-pass filter, amplifier with adjustable coefficient of amplification, analogue-digital converter, as well as low-pass filter and digital-analogue converter. Four primary measuring temperature converters are located symmetrically around working part of bundle of optic fibres. Device of collection and translation of data is made in for of microcontroller. Unit of processing of diagnostics results is made in form of personal computer.

EFFECT: application of the invention will make it possible to increase self-descriptiveness of diagnostics.

1 dwg

FIELD: medicine.

SUBSTANCE: group of inventions relates to field of medicine. Device contains chamber for flowing medium, pressurisation unit, pressure relief unit, sensor for measuring change of internal pressure in chamber for flowing medium, unit of blood pressure measurement, which includes unit of data collection for obtaining information about measurement section perimetre. Control unit controls pressurisation unit and/or pressure relief unit in such a way as to ensure proportional dependence between flow change value per time unit for flowing medium in chamber for flowing medium in any one of processes of pressurisation and pressure relief. Unit of blood pressure measurement calculates value of systolic and diastolic blood pressure on the basis of change of internal pressure in chamber for flowing medium, obtained by sensor, in the process of pressurisation and pressure relief.

EFFECT: group of inventions makes it possible to reduce error of blood pressure measurement and eliminate necessity of correcting volume of chamber for flowing medium.

24 cl, 57 dwg

FIELD: medicine.

SUBSTANCE: group of inventions relates to field of medicine. Device contains chamber for flowing medium, pressurisation unit, pressure relief unit, sensor for measuring change of internal pressure in chamber for flowing medium, unit of blood pressure measurement, which includes unit of data collection for obtaining information about measurement section perimetre. Control unit controls pressurisation unit and/or pressure relief unit in such a way as to ensure proportional dependence between flow change value per time unit for flowing medium in chamber for flowing medium in any one of processes of pressurisation and pressure relief. Unit of blood pressure measurement calculates value of systolic and diastolic blood pressure on the basis of change of internal pressure in chamber for flowing medium, obtained by sensor, in the process of pressurisation and pressure relief.

EFFECT: group of inventions makes it possible to reduce error of blood pressure measurement and eliminate necessity of correcting volume of chamber for flowing medium.

24 cl, 57 dwg

FIELD: medicine.

SUBSTANCE: invention relates to cardiology, pathophysiology, biochemistry and pharmacology. To assess development of ischemic heart disease value of discriminant function is calculated by a set of parameters: age, height, weight, Quetelet index, Broca's index, abdominal obesity, triglycerides, total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, atherogenicity index, arterial pressure, glucose, alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, α-amilase, total protein, albumin, uric acid, urea, creatinine, creatine kinase, alkaline phosphatase, total bilirubin, direct bilirubin, ADP-induced platelet aggregation, collagen-induced platelet aggregation, platelet number, mean platelet volume, number of red blood cells, hematocrit, hemoglobin, mean corpuscular volume, RDW-CV, average content of hemoglobin in blood, number of white blood cells, percent content of neutrophil granulocytes, percent content of eosinophils, percent content of basophils, percent content of lymphocytes, percent content of monocytes, mean content of hemoglobin on red blood cell. Conclusion about initial stage of IHD development, 50% risk of disease or 100% development of IHD is made on the basis of obtained value.

EFFECT: method makes it possible to carry out individual quantitative assessment of ischemic heart disease development depending on patient's sex, on the basis of discriminant function value.

5 dwg, 2 tbl, 2 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to functional diagnostics and geriatrics. Indices of cardiohemodynamics are determined, for men from 30 to 95 years old: relaxation period, hydraulic heart power, initial systolic compliance of arteries; in women from 20 to 65 years old: relaxation period, total peripheral vascular resistance, minute volume. After that, biological age is calculated by original mathematical formula.

EFFECT: method makes it possible to increase objectivity of biological age determination.

6 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to cardiology. When patient with acute myocardial infarction (AMI) is hospitalised, their ECG is registered, clinical and biochemical blood tests are performed, and anamnesis is analysed. The following parameters are analysed: HB higher than 77/min for men or HB higher than 80/min for women on ECG at rest in lying position, presence of signs of hypertrophy of left ventricle myocardium (HLV), presence of ST-T changes and presence of complete left block of bundle of His, presence of myocardial infarction (MI) in anamnesis, complicated course of acute MI, presence of diabetes mellitus, low socio-economic status, determined by the level of the average monthly income below living wage; treatment with beta-blockers, ACE inhibitors, calcium antagonists before acute MI and antiplatelet agents during hospitalisation; increased ESR higher than 15 mm/hour for men and 21 mm/h for women, increased level of K+ higher than 5.3 mmol/l, reduction of K+ lower than 3.5, pulse in sitting position more than 80/min during physical examination in the process of hospitalisation. Index of risk of death in remote period after MI (MINDEX) is calculated by elaborated mathematical formula. Risk of death is estimated as very low, low, medium, high, very high by MINDEX value.

EFFECT: method makes it possible to determine risk of death in remote period after MI.

2 ex

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine. Versions of device for measuring information about blood pressure contains two envelopes with flowing medium and two sensors for measuring internal pressures of envelopes with flowing media, unit for regulating internal pressure of the second envelope with flowing medium and control unit for controlling calculation for calculation of parameter for determination of arteriosclerosis degree and regulation of first regulation unit. Said control unit performs steps of method for obtaining parameter for obtaining to determine arteriosclerosis degree from pulse wave. In the process of method realisation pressure of the second envelope is increased to the level higher than systolic blood pressure. The first pulse wave of measured part is detected on the basis of measurement of internal pressure of the first envelope with flowing medium. The parameter is calculated from the first pulse wave. Internal pressure of the second envelope with flowing medium is lowered below systolic pressure in case when said parameter fails to be calculated from the first pulse wave. The second pulse wave of measured part is detected. The parameter is calculated from the second pulse wave.

EFFECT: group of inventions makes it possible to increase accuracy of arteriosclerosis determination on the basis of measured information about blood pressure.

8 cl, 27 dwg, 4 ex

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine. Versions of device for measuring information about blood pressure contains two envelopes with flowing medium and two sensors for measuring internal pressures of envelopes with flowing media, unit for regulating internal pressure of the second envelope with flowing medium and control unit for controlling calculation for calculation of parameter for determination of arteriosclerosis degree and regulation of first regulation unit. Said control unit performs steps of method for obtaining parameter for obtaining to determine arteriosclerosis degree from pulse wave. In the process of method realisation pressure of the second envelope is increased to the level higher than systolic blood pressure. The first pulse wave of measured part is detected on the basis of measurement of internal pressure of the first envelope with flowing medium. The parameter is calculated from the first pulse wave. Internal pressure of the second envelope with flowing medium is lowered below systolic pressure in case when said parameter fails to be calculated from the first pulse wave. The second pulse wave of measured part is detected. The parameter is calculated from the second pulse wave.

EFFECT: group of inventions makes it possible to increase accuracy of arteriosclerosis determination on the basis of measured information about blood pressure.

8 cl, 27 dwg, 4 ex

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine. Versions of device for measuring information about blood pressure contains two envelopes with flowing medium and two sensors for measuring internal pressures of envelopes with flowing media, unit for regulating internal pressure of the second envelope with flowing medium and control unit for controlling calculation for calculation of parameter for determination of arteriosclerosis degree and regulation of first regulation unit. Said control unit performs steps of method for obtaining parameter for obtaining to determine arteriosclerosis degree from pulse wave. In the process of method realisation pressure of the second envelope is increased to the level higher than systolic blood pressure. The first pulse wave of measured part is detected on the basis of measurement of internal pressure of the first envelope with flowing medium. The parameter is calculated from the first pulse wave. Internal pressure of the second envelope with flowing medium is lowered below systolic pressure in case when said parameter fails to be calculated from the first pulse wave. The second pulse wave of measured part is detected. The parameter is calculated from the second pulse wave.

EFFECT: group of inventions makes it possible to increase accuracy of arteriosclerosis determination on the basis of measured information about blood pressure.

8 cl, 27 dwg, 4 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, cardiology and can be used in diagnostics and treatment of CHD with unchanged/slightly changed coronary arteries (Cardiac syndrome X, CSX). Single-photon emission computed tomography (SPECT) of myocardium with introduction of radiopharmaceutical is preliminarily performed to patient at rest state with further introduction of 1% ATP solution at rate 0.10-0.20 mg/kg for 1-5 minutes. SPECT of myocardium is repeated, and conclusion about presence of myocardium ischemia is made after comparison of its myocardium perfusion parameters with parameters, measured in rest state. Introduction of radiopharmaceutical for repeated SPECT is performed after finishing introduction of ATP, with repeated SPECT being carried out not sooner than 1 hour after ATP introduction.

EFFECT: method ensures non-invasive, highly sensitive provocation of myocardium ischemia in patients with CSX with verification of impaired coronary reserve.

1 dwg, 3 ex

FIELD: medicine.

SUBSTANCE: method involves recording heart beat rate and systolic arterial blood pressure before and after two-stage exercise stress. The first stage is of 50 W within 3 min and the second one is of 75 W during 2 min. Patient rest pause is available between loading stages to recover initial heart beat rate. Prognostic estimation of cardiopulmonary complications is carried out with mathematical formula applied.

EFFECT: reduced risk of complications in performing tests.

FIELD: medicine.

SUBSTANCE: method involves measuring cardio- and hemodynamic values, calculating estimates of the values and displaying the estimates on monitor. Measuring and calculating each cardio- and hemodynamic value is carried out during basic periods of their oscillations corresponding to heart contraction cycle and respiratory cycle related to absolute time.

EFFECT: high accuracy of estimation.

4 dwg, 1 tbl

FIELD: animal science.

SUBSTANCE: the present innovation deals with dynamic loading onto cardio-vascular system in animals. Selection should be carried out by the following parameters: , ΔT3 and Δn, where ΔT1 - the time for pulse increase at running, ΔT2 - the time for pulse stabilization after running, ΔT3 - the time for pulse increase after running, Δn - the increase of pulse frequency after running. One should select animals into milking herd at the following values; ΔT3 ≤ 10 sec, Δn ≤ 10 beats/min. The method enables to present perspective evaluation of lactation capacity in animals.

EFFECT: higher efficiency of selection.

1 dwg, 1 ex, 1 tbl

FIELD: medicine.

SUBSTANCE: method involves recording rheogram from feet and legs lifted and fixed at an angle of 45є. Then, rheogram is recorded on inhaling from legs directed vertically downward. Functional blood circulation reserve index is calculated as product of results of dividing and subtracting rheographic indices recorded under conditions of lifted and lowered extremities that means under conditions of functional venous system relief and venous hypertension, respectively.

EFFECT: enhanced effectiveness in recognizing patient group suffering from severe lower extremities ischemia.

6 dwg

FIELD: medicine.

SUBSTANCE: method involves recording rheogram from feet and legs lifted and fixed at an angle of 45є. Then, rheogram is recorded on inhaling from legs directed vertically downward. Functional blood circulation reserve index is calculated as product of results of dividing and subtracting rheographic indices recorded under conditions of lifted and lowered extremities that means under conditions of functional venous system relief and venous hypertension, respectively.

EFFECT: enhanced effectiveness in recognizing patient group suffering from severe lower extremities ischemia.

6 dwg

FIELD: medicine.

SUBSTANCE: method involves applying a set of reference values like body mass, arterial blood pressure, pulse rate in rest state and general physical condition values. Exercise stress is sequentially applied for evaluating vertebral column flexibility, response quickness, dynamic leg force, speed-and-force tolerance. Each value is compared to a reference value, the differences of each item between reference and actual values are summed and the total value is interpreted in terms of complex human physical condition.

EFFECT: high reliability of the method; simplified testing process requiring no complex and expensive equipment and high skill personnel.

6 cl

FIELD: medicine.

SUBSTANCE: method involves applying a set of reference values like body mass, arterial blood pressure, pulse rate in rest state and general physical condition values. Exercise stress is sequentially applied for evaluating vertebral column flexibility, response quickness, dynamic leg force, speed-and-force tolerance. Each value is compared to a reference value, the differences of each item between reference and actual values are summed and the total value is interpreted in terms of complex human physical condition.

EFFECT: high reliability of the method; simplified testing process requiring no complex and expensive equipment and high skill personnel.

6 cl

Up!