A device for comparing the duration of the two multi-temporal pulse

 

The invention relates to the measurement of parameters of pulse signals. The technical result consists in providing the possibility of comparing the durations of the two neighboring multi-temporal pulses of the pulse sequence. The device includes a frequency divider of the input pulses (D) (1), the integrating operational amplifier (op-amp) (2), keys () (3, 6, 7), logic cell 2I (4, 5), ELY (12, 13), the negative sources (8) and positive (9) a constant voltage, logic inverters (10, 11), the short pulse shaper (FCI) (14), the device selection-retention (water economy Department) (15). For comparison, the conversion is performed in each of the two neighboring multi-temporal pulses in the voltage with a voltage integrator OS (2). The residual voltage at the integrator OS (2) is proportional to the difference of pulse durations. 1 C.p. f-crystals, 2 Il.

The invention relates to electrical engineering, in particular to the measurement of parameters of pulse signal.

When conducting a patent search, and analogs of the solutions proposed by the authors is not found.

The technical result - the ability to compare the durations of two adjacent (i.e., multi-temporal) of the pulses of the pulse is of duration of the two multi-temporal pulse feature is it contains an integrating operational amplifier, a negative feedback circuit that includes the first key, and the entrance through the second key is connected to a source of negative voltage through the third key to the source of positive voltage, a frequency divider of the input pulse, the input of which is connected to the first, second logic cells in 2I, and the first logical cell ILI, and the output connected to the first logical cell 2I and to the first logical cell ILI directly, and the second logical cell 2I - through the first logical inverter, the output of the first logic cell 2I is connected to the control input of the second key, and the output of the second logic cell 2I is connected to the control input of the third key, the output of the integrating operational amplifier is connected with a sample-hold output which is the output of the device, the output of the first logic cell ILI connected to the input of the second logic cell ILI and through the shaper short pulse with the control input of the third key, the output of the short pulse shaper is connected to the input of the second logic cell ILI, the output of which is via a second logical inverter connected to the input control is analog, characterized by symptoms that are identical to all features of the claimed invention, and determining from the list of unique prototype allowed us to identify a set of essential towards perceived by the applicant to the technical result of the distinctive features in the claimed device, set forth in the claims. Therefore, the claimed invention meets the condition of “novelty.”

To verify compliance of the claimed invention the term “inventive step”, the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the characteristics of the claimed device. The search results showed that the claimed invention not apparent to the expert in the obvious way from the prior art because the prior art defined by the applicant, not the influence provided the essential features of the claimed invention transformations to achieve a technical result. Therefore, the claimed invention meets the condition of “inventive step”

The drawings show: Fig.1 shows a diagram of the device of Fig.2 shows the timing diagramname operational amplifier (op-amp) 2, the first key 3, the first 4 and second 5 logic cells 2I, the second 6 and third 7 keys, sources of negative 8 positive 9 constant voltage, the first 10 and second 11 logical inverters, the first 12 and second 13 logic cells ILI, short pulse shaper 14, the device sample-hold 15.

The device operates as follows. Input pulses (for example, the first durationt1and the second durationt2(Fig.2,a)), an input frequency divider 1, which reduces the frequency of these pulses is doubled (Fig.2,b). The inputs of the first cell, 2 and 4 served the input pulses and the output signal from the divider 1, the output of the cell signal “1” is present during only the first input pulse (Fig.2). The inputs of the second cell 2, AND 5 in addition to the input pulses are inverted (using a logical inverter 10) pulses from the output of the divider 1, the output of the cell signal “1” is present during only the second input pulse (Fig.2,g).

The signals from cells 4 and 5 are fed to the control inputs of the second 6 and third 7 keys. Key 6 connects to the input of the integrating OS 2 channel negative naprajeno linearly until the voltage u1(Fig.2,d), which is directly proportional to the pulse duration:

where k=const is a constant of proportionality determined by the parameters of the integrating OS 2.

In the time intervalt2to the input of the integrating OS 2 (using the third key 7) is connected to the source of positive voltage 9 (voltage sources 8 and 9 in absolute value must be equal). Integration occurs in the opposite direction, and if it was carried out with the zero level, then the process would occur before the voltage u2(Fig.2D):

The total voltage at the output node 2 at time (t1+t2with regard to (1) and (2) will equal:

wheret - the difference (duration) between two adjacent pulses.

Input pulses (Fig.2,a) and the voltage output from the divider 2 (Fig.2,b) served on the first logical cell ILI 12, so its output voltage has the form shown in Fig.2,that is, back-to-Back this voltage starts shaper short pulse 14, which generates a pulse (Fig.2,W), using cotacotani sign (3) voltage. In fact, whent2>t1this voltage is negative (Fig.2,d). Thus, the output voltage of the device is directly proportional to the difference between multi-temporal durations of the pulses of:

The voltage output of the cell 12 (Fig.2,e) and from the output of the driver 14 (Fig.2,W) are in the second logic cell ILI 13, the output voltage of which is shown in Fig.2,C. It is served via a second logical inverter 11 to the control input of the first key 3, allowing discharges the integrating capacitor HL 2. With the arrival of the next input pulse (third pulse in Fig.2,and the cycle repeats.

Shaper 14 can be made on the basis of the one-shot (standby multivibrator) and water economy Department - using known schemes based on the key, a capacitor, and operational amplifiers.

Thus, the claimed device in the form as it is described in the following claims, confirmed the possibility of its implementation using the steps described in the application of funds. The device embodying the claimed invention in its implementation, is able to achieve a perceived'll say what can be used for example, in various devices, electrical equipment and automation.

Therefore, the claimed invention meets the condition of “industrial applicability”.

Claims

1. A device for comparing the duration of the two multi-temporal pulses, characterized in that it contains an integrating operational amplifier, a negative feedback circuit that includes the first key, and the entrance through the second key is connected to a source of negative voltage through the third key to the source of positive voltage, a frequency divider of the input pulse, the input of which is connected to the first and second logic cells in 2I, and the first logical acce ILI directly, and the second logical cell 2I through the first logical inverter, the output of the first logic cell 2I is connected to the control input of the second key, and the output of the second logic cell 2I is connected to the control input of the third key, the output of the integrating operational amplifier is connected with a sample-hold output which is the output device for comparing the duration of the two multi-temporal pulses, the output of the first logic cell ILI connected with some of the camping short pulse shaper, with the help of which a voltage proportional to the difference between the durations of adjacent pulses, the total voltage at the output of the integrating operational amplifier can be saved in the device of the sample-hold output of the short pulse shaper connected to another input of the second logical aceki ILI, the output of which is via a second logical inverter is connected to the control input of the first key.

2. A device for comparing the duration of the two different times of the pulses p. 1, wherein the division ratio of the frequency divider of the input pulses is equal to two.

 

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