Device for measuring the angle of rotation of the object

 

(57) Abstract:

The invention relates to measuring technique and can be used for measuring angles of rotation of the rotors of the generators, mobile nodes in the machine the rolling element rotational viscometer, etc. the Technical result is to increase the accuracy. The result is achieved that the device comprises a radiation source attached to the object reflector of interest, the ring MultiScan, amplifier, two comparator, block search, the control unit, switching unit, an analog-to-digital Converter, a display unit and a key, due to this decrease error when changing the luminous flux of the radiation source and the displacement of the axis of rotation of the object. 7 Il.

The invention relates to measuring technique and can be used for measuring angles of rotation, such as the rotors of the generators, the rolling element rotational viscometers.

The known device for measuring angles of rotation (application N 3201163 Germany, publ. 28.07.83; patent N 4352287 USA, publ. 05.10.82; patent N 57-5287 Japan, publ. 29.01.82) are characterized by great complexity and limited range of angles to be measured.

The closest USSR), containing optically coupled to the radiation source, a reflective element, a photodetector and a signal processing unit. Reflective element made in the form of a cylinder with linearly varying along the perimeter of the reflection coefficient. About the size of the angle of rotation of the object in the device prototype is judged by the magnitude of the reflected from the reflector of the light flux.

The disadvantages of this device, taken as a prototype, is: first, the reduction in measurement accuracy when the fluctuations of the light flux of the radiation source; secondly, reducing the accuracy of the measurement of the displacement of the axis of rotation of the object, because in this case, the luminous flux depends not only on the rotation angle, but from the offset axis of rotation of the object; thirdly, a significant difficulty associated with the need for a reflector with a variable along the perimeter of the cylinder reflectance.

In the proposed device for measuring the angle of rotation of the object, comprising optically coupled to the radiation source associated with the object reflector with variable reflectivity, a lens and a transmitter of the light flux, and a signal processing unit, the signal processing unit contains placentas and second Comparators, the block search, the control unit, the switching unit and the key, with the primary Converter is implemented in the form of a ring MultiScan, signal output ring MultiScan connected to a matching amplifier, the output of the latter is connected to the inputs of the first and second Comparators, the outputs of the Comparators are connected to first and second inputs of the search block and the control unit, the third input of the search block is connected with the key, the output of the search block is connected to the third input of the control unit, the output control unit connected to the second input of the display unit and the input of the switching unit, the outputs of the switching unit is connected to the power input ring MultiScan, and the reflector is made in the form of a disk coated with a picture in the form of segments of different reflectivity.

Comparative analysis of the prototype allows to conclude that the proposed device for measuring the angle of rotation is characterized by the presence of new nodes and blocks. Namely, the execution of the primary Converter of the light flux, the implementation scheme of signal processing and execution of the reflector.

Thus the proposed device meets the criterion of "novelty."

The positive effect of the image and the offset of the axis of rotation of the object.

In Fig.1 shows the structural diagram of the device of Fig.2 ring MultiScan and the image of the reflector in the plane of the sky; Fig.3 - characteristics of annular MultiScan; Fig.4.5 operation of the device at the offset of the axis of rotation of the object; Fig.6 is an example of a particular implementation blocks search, control and switching of Fig.7 is the same, the indication block.

The device comprises (Fig.1) object 1, fixed on the object reflector 2, the radiation source 3, a lens 4, a ring MultiScan 5, the matching amplifier 6, the first and second Comparators 7, 8, 9 search, work area characteristics MultiScan, the control block 10, block 11 switching, analog-to-digital Converter 12, block 13 of the display and the key 14.

Optical channel device includes optically coupled to the radiation source 3, the reflector 2, the lens 4 and the photosensitive surface of the annular MultiScan 5. Signal output ring MultiScan 5 connected through a matching amplifier 6 to the inputs of the first and second Comparators 7, 8 and analog-to-digital Converter 12. The power input ring MultiScan 5 are connected to the outputs of the switching block 11. The outputs of the first and second Comparators 7, 8 connected to the first and wtoe, and the output of the latter with the input of the switching block 11 and the second input unit 13 of the display, the first input connected to the output of the analog-to-digital Converter 12. The third input unit 9 search connected with a key 14.

The device operates as follows. Fixed on the object 1 reflector 2 with the applied image in the form of segments of different reflective density is illuminated by the radiation source 3.

The image of the reflector 2 is projected by the lens 4 onto the photosensitive surface of the annular MultiScan 5. On two adjacent input power ring MultiScan 5 direct voltage +E1and-E2from the output of the switching block 11. The voltage at the signal output ring MultiScan 5 corresponds to the position of the energy center of the light spot on the illuminated segment ring MultiScan 5 (Berkovsky K. Kirillova F. N. Century Podlaskie B., and other Multi-element photodetector of MultiScan. Technical physics letters, 1983, vol.10, N 53, S. 2015 2023).

Suppose that the image of the reflector 2 occupies the position shown in Fig.2, and the power input ring MultiScan 5 applied voltage: +E1on input (c), -E2on input (d). Then the center of brightness is but the voltage at the signal output ring MultiScan 5 will be in proportion to the angle between the OX axis, adopted as the reference point, and the radius vector OA passing through a point located in the middle of the arc MNK. Moreover, the vector OA is perpendicular to the line M1-N1, dividing the image of the reflector 2 into segments of different reflective density. Thus the angular position of the reflector 2, is associated with object 1, is characterized by the voltage at the signal output ring MultiScan 5.

However, the voltage at the signal output ring MultiScan 5 depends not only on the angle a but also on what the power input ring MultiScan 5 is energized. The curves of the voltage at the signal output ring MultiScan 5 in function of the angle a of rotation of the reflector 2 shown in Fig.3. Curve Uab() corresponds to the supply voltage +E1input (a), -E2on input (b). Curve Ubc(a) the supply voltage +E1on input (b), -E2on input (c). Curve Ucd() connection voltage +E1on input (c), -E2on input (d). And the curve Uda() connect the voltage +E1on input (d) and (E2input (a). When this angle is measured, as shown in Fig.2.

To achieve high precision measurements of the angle of rotation of the object in the device uses a linear increasing areas of charactertics Ucd(). Linear plots of characteristics is limited at the top and bottom voltages Ucp1and Ucp2respectively.

At the initial stage of operation of the device to search the work area characteristics annular MultiScan 5.

The search process begins after closure of the key 14. The block 9 of search switches to the search mode.

The search process is as follows.

Let the switching block 11 at the beginning of the search process applies a voltage +E1input power (a), and voltage-E2input power (b). The voltage at the signal output ring MultiScan 5 is characterized by the curve Uab() This voltage is fed through a matching amplifier 6 to the inputs of the first and second Comparators 7, 8.

If the voltage at the input of the first comparator 7 exceeds the voltage comparison Ucp1on outputs its signal to a logical 1 (x1=1), otherwise the signal 0 (x1=0) (log.1 and the log.0).

The second comparator generates a logic signal 1 (x2=1), if the signal at its input is less than-USRand the signal log. 0 (x2=0) otherwise. The values of the signals x1x2for various is, logic signals to the inputs of block 9 of search. Unit 9 search produces signals on the third and fourth inputs of the control block 10. The control block 10 generates signals input to the switching block 11, and the latter carries out the sequential switching of the supply voltage +E1, -E2on a pair of adjacent power input ring MultiScan 5 (switching occurs in the direction of counterclockwise).

If the n-th step of the search input unit 9 search occurs the combination of logic signals x1=0, x2=0, there is an additional (n+1)-th search step. And if (n+1)-th step the value of x2=1, then the search stops and returns on the n-th step, i.e., the supply voltage +E1, -E2served on those inputs power ring MultiScan 5, which were connected to the n-th step. If x2=0, then the search continues in the same way.

Assume that when starting the unit, the reflector 2 occupies the position shown in Fig.2, the turn angle of the object -45< < 45as the voltage at the signal output ring MultiScan 5 this describes the curve Uab() Depending on the specific knowledge of the Comparators 7 and 8 can take the following values: x1=0, x2=1; x1=0, x2=0; x1= 1, x2=0.

Let at the start of the device is x1=0, x2=1 (or x1=1, x2=0). In accordance with the described algorithm is the next step: unit 11 of the switching switches the supply voltage +E1and-E2on the power input (b)-(c) respectively. Ring MultiScan goes to the characteristic Ubc() and signals at the output of the Comparators 7, 8 will take the value of x1=1, x2=0. Because the condition x1= 0, x2=0 is not performed, the search continues: block 11 of the switching switches the voltage +E1, -E2the inputs (c)-(d) power ring MultiScan 5, respectively. Ring MultiScan 5 goes to the characteristic Ucd() The values of the logical signals will be: x1=0, x2=0. Unit 9 search returns through block 10 control signal to the switching block 11 and initiates the next switching. In the voltage +E1, -E2served on the power input (d)-(a) an annular MultiScan 5, respectively. The voltage at the signal output ring MultiScan 5 describes the curve Uda() and the output signal of the second comparator x2=0. This is a sign of the end of the search on avodat to the switching voltages +E1, -E2on the power input (c)-(d) MultiScan 5. The search process ends, and the device then operates in the measurement mode for the characteristic Ucd()

If you start device is x1=0, x2=0, then in accordance with the described algorithm block 9 search returns through block 10 control signal to the switching block 11 and is following the switch, the respective additional step. In the voltage +E1, -E2are fed to the inputs of power (b)-(c) ring MultiScan 5, respectively. The voltage at the signal output ring MultiScan 5 describes the curve Ubc() As the signal at the output of the second comparator x2=0, then the search continues as described above.

Due to the fact that during operation of the device switches power input ring MultiScan 5 and used different parts of its characteristics, the measured angle value is determined as follows. The voltage signal output ring MultiScan 5, depending on the angle of rotation of the reflector 2, is associated with object 1, is converted to an analog-to-digital Converter 12 V code Ncand is supplied to the unit 13 of the display. In addition, Blo is acteristic ring MultiScan 5. When indication value of the rotation angle is determined by the code

NandNcm+ Nwith,

In particular, when the supply voltage +E1, -E2submitted respectively to the inputs of power (c)-(d) ring MultiScan and he works for the characteristic Ucd() code Ncm=0.

If you are using the characteristic Uda() Ncmcorresponds to the 90o; when working on the characteristic Uab() Ncmcorresponds 180o; and the characteristic Ubc() 270o.

When the device is in measurement mode switching voltages at the inputs of power ring MultiScan 5 and the change of code values Ncmoccurs when the threshold angle that is controlled by the magnitude of the voltage at the signal output ring MultiScan 5.

If, for example, when operating in the measurement mode the angle a increases, then when it reaches the value 45oat the output of the first comparator 7 signal changes value from the level of the log. 0 to level the log.1. The block 10 management issues on block 11 of the switching signal for switching the voltage at the power input (d)-(c) ring MultiScan 5, and the transition occurs at harakeke 10 control code is generated offset Ncmcorresponding to the 90o. Due to this, the output unit 13 of the display shows the measured value of the rotation angle of the object depending on the characteristics of the ring MultiScan 5.

Thus, the proposed device provides a continuous measurement of the rotation angle in the range from 0 to 360o.

The proposed device provides the invariance of the measurement results in the displacement of the axis of rotation of the object relative to the center of the light-sensitive surface of annular MultiScan 5. This statement can be explained by the following reasoning. Suppose (Fig.4) in the initial position the axis of rotation of the reflector 2, associated with the object 1, coincides with the center 0 of the light-sensitive surface of annular MultiScan 5. The angle of rotation of the object 1 is characterized radius vector OA passing through the middle of the segment MKN ring MultiScan 5. Suppose there was a shift of the axis of rotation of the object 1 and an associated reflector 2 along the axis OX in point OI. Obviously, in this case, despite the change in the length of the illuminated segment of the light-sensitive surface of annular MultiScan 5 (M1KN1), the middle part of it will remain at the same point in K. Therefore the case they offset the axis of rotation of the object 1 in the direction of the axis OY (Fig. 5). In the initial position the axis of rotation of the object 1 and the reflector 2 coincides with the center of the photosensitive surface of annular MultiScan 5. The angle a of rotation of the object 1 is characterized by the radius vector OA. Suppose that is offset from the axis of rotation of the object at the point OI. Obviously, while the illuminated segment MKN photosensitive surface of annular MultiScan 5 remains unchanged, and, therefore, remains unchanged position of the radius-vector OA and the measured value of the angle alpha

Since an arbitrary offset of the axis of rotation of the object 1 relative to the center of the light-sensitive surface of annular MultiScan 5 can be decomposed into two orthogonal components, and each of them, as shown above, does not affect the measurement result of the angle of rotation of the object 1 by means of the proposed device, it can be argued that the proposed device provides the invariance of the measurement results to the specified indignation.

In addition, the proposed device is insensitive to the variations of the luminous flux of the radiator 3. Indeed, variations of the light flux leads to the changes of oblojennosti photosensitive surface of annular MultiScan 5. Position analytischen 5 remains unchanged. Therefore, the use of the claimed device ensures the invariance of the measurement results to the change of illumination of the reflector 2.

Thus the inventive device provides high precision measurements of the angle of pivot of the object in the range of angle from 0 to 360o.

An example of a specific implementation blocks search 9, the control 10 and 11 switching the claimed device explained in Fig. 6. The search block includes first and second logic circuits (LS) OR NOT 15 and 16, BOS And 17 waiting multivibrator 18, the generator of clock pulses (GTI) 19, the first and second JK-triggers 20 and 21. The control unit 10 includes drug NO 22, PP AND OR NOT 23, PA-24 and NOT reversible binary counter (RDS) 25. Switching unit includes first, second, third and fourth analog switches (AK) 26, 27, 28 and 29.

The output of the first comparator 7 (Fig.1) is connected with the first inputs of the first drug OR NOT 15 and LS AND-OR-NOT 23. The output of the second comparator 8 (Fig.1) is connected with the second inputs of the first drug OR 15, the second drug OR NOT 16, HP And 17 HP AND 24 and through PM NOT 22 with the third input of the LS AND-OR-NOT 23. The key 14 (Fig.1) in standby multivibrator 18 is connected to the input R (Reset) of the first 20 and second 21 JK flipflops. The outputs of the first LS 15 OR NOT and vtori inputs HP And 17 HP AND NOT 24, and the inverted output of which is connected to the sixth input of the LS AND-OR-NOT 23. The output of LS And 17 connected to the input J of the second JK-flip-flop 21, the input K is connected to the common point of the scheme, the direct output of which is connected to the first input of the second drug OR NOT 16, and the inverted output of which is connected to the fourth input of the LS AND-OR-NOT 23. The output GTI 19 is connected to the inputs of the first and second JK-flip-flops 20 and 21, and from the second to the fifth and seventh inputs drugs AND-OR-NOT 23 and the third input HP And 24. The LS output AND-OR-NOT 23 is connected to the " + " input (summing input), the output of the LS AND NOT 24 "-" (subtractive input) 25 RDS. The first (least significant bit) and the second (senior category) the outputs of the latter are connected respectively to the fifth and sixth control inputs of the first, second, third and fourth AK 26, 27, 28, 29. DC voltage +E1served on the first, second, third and fourth and-E2on the fourth, first, second and third signal inputs respectively of the first, second, third and fourth AK 26, 27, 28 and 29, the outputs of which are connected respectively to the inputs (a), (b), (c) and (d) an annular MultiScan 5 (Fig.1).

The GTI 19 generates a pulse, the length of which is greater than the maximum delay of the first JK-flip-flop 20 or the second JK-flip-flop 21 or RDS. The period of these pulses is search 9, the control unit 10 and the switching unit 11 (Fig.1).

Changing the state of the JK-flip-flop to the inputs J and K can be cut pulse applied to the input C. When to change the state of the log. 0 in the log.1 on the input J of the need to submit a log.1, and the input K H for changes from the log.1 in the log.0, respectively, H and log.1, and to save the state of the log.0 in the log.0, respectively, of the log.0 and H and a log.1 in the log.1, respectively, H and log.0 (here denoted by H an indefinite signal log.0 or log.1). The output levels are specified for direct access to the trigger.

The state of the first and second JK-flip-flops 20 and 21 define the mode of the device. The search mode corresponds to the state 00, the trial step 10, and the measurement mode 11. (The first digit corresponds to the first flip-flop 20, and the second of the second trigger 21).

In the search mode from any other mode, the device translates the short circuit of the key 14. In this case, waiting multivibrator 18 generates a pulse applied to the input R of the first and second JK-flip-flops 20 and 21.

Switching to other modes is carried out by a slice of the pulse generated by the GTI 19 and supplied to the assemblies With the first and second JK-flip-flops 20 and 21, when certain signaline mode search mode a trial step is to apply the signals x1=0 and x2=0. In this case, the inputs J and K of the first JK-flip-flop 20 will be supplied to the signal log. 1, to the same input of the second JK-flip-flop 21 log. 0 and on the next slice of the pulse GTI 19 status triggers will change from 00 to 10.

To switch back mode test step in the search mode enough signal x2=0. In this case, the input K of the first JK-flip-flop 20 will be supplied to the signal log.1, the inputs J and K of the second JK-flip-flop 21 log.0 and on the next slice of the pulse GTI 19 status triggers will vary from 10 to 00.

For switching from the test step in the measurement mode enough signal x2= 1. In this case, the input K of the first JK-flip-flop 20 will be supplied to the signal log.0, the inputs J and K of the second JK-flip-flop 21 is respectively the log. 1 and 0 and on the next slice of the pulse GTI 19 status triggers will change from 10 to 11.

The switch from measuring mode to other modes by using the signals x1x2and momentum GTI 19 impossible. We will show this. The signal at the input K of the second JK-flip-flop constantly equal to the log. 0 and, hence, switching from state 1 to state 0 by the slice pulse GTI 19 impossible. The signal log.1 to direct the output of the second JK-flip-flop will cause the tion switch trigger from state 1 to state 0.

Mode 25 RDS (summation, subtraction, or storage) is determined by the signals on its input "+" and "-".

Contents RDS 25 is incremented when forming the front of the pulse at its "+" input and the log.1 "-". As can be seen from Fig.6, the pulse at the input "+" is formed of drugs AND OR NOT 23 cut pulse GTI 19 when one of the conditions: x1=1; x2=0 and Q2=0; Q1=0 (where Q1and Q2the signals output respectively of the first and second JK-flip-flops 20 and 21). The level of the log.1 on the sign "-" is formed of drugs AND NOT 24 when one of the conditions Q1=0 or [20.

Contents RDS 25 decremented for shaping the wavefront of the input "-" and the log.1 "+". As can be seen from Fig.6, the front of the pulse at the input "a" is formed of drugs AND NOT 24 slice pulse GTI 19 when the condition Q1= 1, x2=1. The level of the log.1 on the "+" input is formed by LS AND-OR-NOT 23 while conditions: x10; x21, or Q2=1; Q11.

Storage mode RDS 25 will be provided with unchanging signal on its input "+" and "-". It is possible under the conditions: x1=0; x2= 1 or Q2=1; Q1=1; Q1=0 or x20.

Using first the voltages +E1and-E2to the inputs (a), (b), (c) and (d) an annular MultiScan (5) (Fig.1). If code 00 voltage +E1is input to (a), the voltage-E2on input (b) ring MultiScan and last switches to the characteristic Uab() If code 01 voltage +E1is input to (b), the voltage-E2on input (c) ring MultiScan and last switches to the characteristic Ubc() When code 10 voltage +E1is input (c), the voltage-E2on input (d) ring MultiScan and last switches to the characteristic Ucd() If code 11 voltage +E1is input (d), the voltage-E2input (a) ring MultiScan and last switches to the characteristic Uda()

The device in Fig.6 operates as follows.

Assume that the reflector 2 (Fig.1) occupies the position shown in Fig. 2 (coal reversal object -45< < 45), and the output code RDS 25 11. Then the voltage at the signal output ring MultiScan is determined by the characteristic Uda() After closure of the key 18 of the first and second JK-triggers 20 and 21 are set to 0 and 0, and all the device goes into search mode, which produces the signals x1=0, x2=1 (see Fig.3), Q1=0, Q20, and the output code 25 RDS is equal to 11. According to the above conditions switching of the first and second JK-flip-flops 20 and 21 and 25 RDS in the formation of a shear pulse GTI 19 status triggers will not change, but the output code RDS 25 incremented and becomes equal 00. The device will remain in the search mode, and ring MultiScan switches on the characteristic Uab()

In the second step, depending on the angle signals x1and x2can take values: x1=1, x2=0; x1=0, x2=0; x1=0, x2=1 (Fig.3). While Q1=0, Q2=0, and the output code RDS 25 equal 00.

Let x1=0 and x2=1. Then the operation of the circuit of Fig.6 will be the same as in the first cycle. The status of the RDS will be equal to 01, the device will remain in the search mode, and ring MultiScan switches on the characteristic Ubc()

In the third beat signals x1=1, x2=0 (Fig.3), Q1=0, Q2=0, and the output code 25 RDS equal to 01. according to the above conditions switching of the first and second JK-flip-flops 20 and 21, and 25 RDS in the formation of a shear pulse GTI 19 status triggers will not change, but the output code 25 RDS will increase on the on the characteristic Ucd()

In the fourth beat signals x1=0, x2=0 (Fig.3), Q1=0, Q2=0, and the output code 25 RDS is equal to 10. Then, when forming the cutoff momentum GTI 19 according to the above conditions, the switching state of the first JK-flip-flop 20 changes and becomes equal to 1, the status of the second JK-flip-flop 21 will not change, but the output code RDS 25 incremented and becomes equal to 11. The device will go into trial step and ring MultiScan will switch to the feature

In the fifth step of the signals x1=0, x2=1 (Fig.3), Q1=1, Q2=0, and the output code 25 RDS is equal to 11. Then, when forming the cutoff momentum GTI 19 according to the above conditions, the switching state of the first JK-flip-flop 20 will not change the state of the second JK-flip-flop 21 changes and becomes equal to 1, and the output code RDS 25 will decrease per unit and will be equal to 10. The device will switch to measure the angle and ring MultiScan switches on the characteristic Ucd()

Let the second step of x1=1 and x2=0. Then, when forming the cutoff momentum GTI 19 according to the above conditions, the switching state of the first and second JK-flip-flops 20 and 21 will not change, but the output code RDS 25 incremented iterotica Ubc() and further work will take place, as described above, since the third stage.

Let the second step of x1=0 and x20. Then, when forming the cutoff momentum GTI 19 according to the above conditions, the switching state of the first JK-flip-flop 20 changes and becomes equal to 1, the status of the second JK-flip-flop 21 will not change, but the output code RDS 25 incremented and becomes equal to 01. The device will go into trial step and ring MultiScan switches on the characteristic Ubc()

In the next cycle signals x1=1, x2=0 (Fig.3), Q1=1, Q2=0, and the output code 25 RDS equal to 01. Then, when forming the cutoff momentum GTI 19 according to the above conditions, the switching state of the first JK-flip-flop 20 changes and becomes equal to 0, the status of the second JK-flip-flop 21 will not change, but the output code RDS 25 incremented and becomes equal to 10. The device will return to the search mode, and ring MultiScan switches on the characteristic Ucd() and in the further operation of the circuit will proceed as described above, since the fourth beat.

Mode angle measurement signals x1and x2depending on the angle can take the values: x the od 25 RDS is equal to 10.

Let x1=0, x2=0 (turn angle of the object -45< < 45). Then the conditions of switching the first and second JK-flip-flops 20 and 21 and 25 RDS are not met. Therefore, the device will remain in the mode angle measurement for the characteristic Ucd()

Let x1=1, x2=0 (turn angle of the object 45< < 135). Then the conditions of switching the first and second JK-flip-flops 20 and 21 will not be executed, and 25 RDS will increase its content by one. The device will remain in the measurement mode, and a ring MultiScan switches on the characteristic Uda() etc.

Let x1=0, x2=1 (turn angle of the object -90< < -45). Then the conditions of switching the first and second JK-flip-flops 20 and 21 will not be executed, and 25 RDS will reduce its contents by one. The device will remain in the measurement mode, and a ring MultiScan switches on the characteristic Ubc() etc.

The algorithm of operation of the device of Fig.4 does not change if in the initial state of the object 1 will be in a different position, and RDS in another state. You may change the number of cycles of the search.

Example concretor 31 and a display 32. The first and second inputs of the adder 30 is connected to the same inputs RDS 23 (Fig.6), and from the third to the ninth input of the adder 30 to the outputs of the analog-to-digital Converter 12 (Fig.1). The outputs of the adder 30 is connected to the inputs of the decoder 31, and outputs the latter to the input of display elements 32.

The display unit operates as follows. The adder 30 produces the sum of the output code of the analog-digital Converter 13 and 25 RDS. The output code of the adder is proportional to the rotation angle of the object 1 (Fig.1) in the range of angle from 0 to 360o. The decoder 31 converts the output code of the adder 30 in the control code indicator elements.

Device for measuring the angle of rotation of the object containing optically coupled to the radiation source, a reflector with changing the reflection coefficient associated with the object, lens and a transmitter of the light flux, the signal processing unit and the display unit, wherein the primary Converter is implemented in the form of a ring MultiScan, the scheme of signal processing executed in the form of series-connected impedance amplifier, analog-to-digital Converter, the first and second Comparators, the search block of the working phase is the first MultiScan through matching amplifier connected to the inputs of the first and second Comparators, the outputs of the Comparators are connected to first and second inputs of the search block and the control unit, the third input of the search block is connected with the key, the output of the search block is connected to the third input of the control unit, the output control unit connected to the second input of the display unit and the input of the switching unit, the outputs of the switching unit is connected to the power input ring MultiScan, and the reflector is made in the form of a disk coated with a image segments, and the segments of the plot on disk executed with different reflectivities.

 

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4 cl, 2 dwg, 2 tbl

FIELD: measuring technology.

SUBSTANCE: invention refers to metrology, particularly to methods of calibrating goniometrical and angle specifying devices of a rotary type forming discrete circular scales of full and (or) not full ranges by means of comparing them with reference devices (reference scales). The essence of the invention is as follows: the disclosed here method is based on adjusting indices of the plan of measuring procedure and on performing interactive control of accuracy of its results. Adjustment is carried out by means of adaptive modifications of procedures of preparation and measuring. The procedure is established as sequence of comparisons of angles between marks of each of calibrated scales taken in pairs; also combinations of marks (pairs) are formed in series, number of which is not specified beforehand. Obtained primary data are processed by the method of the least squares on base of model equations connecting measured parametres; while algorithm of processing contains blocks of check of uniform precision of series (with their possible reject) and check of adequacy of accepted model ( with its possible refinement). The procedure is interactive and lasts till achieving required or utmost possible accuracy of results.

EFFECT: expanded range of discreteness of calibrated circular scales and refusal of full range requirement; also facilitating control over accuracy of calibration, including accuracy due to refinement of model of primary data.

6 cl, 5 dwg

FIELD: measuring technology.

SUBSTANCE: inventions refer to assembly of magnet angular converter. The essence of the invention is as follows: tool set consists of setters in form of process cylinder 14 for processing card 10 and process cylinder 18 for cylinder magnet 7, and magnet limiting device 7 in form of limiting cylinder element 12. Process cylinders 14, 18 are made with contacts 15, 19 and setting bases 16, 20. Process cylinder 14 and limiting cylinder element 12 are made out of non-magnet material, while process cylinder 18 is made out of magnet material. For assembly process cylinder 14 is installed in central opening 6 of shaft 3 till contact base 15 contacts base end 4 of shaft 3. Magnet sensitive element 11 is brought to contact setting base 16. Processing card 10 is glued and process cylinder 14 is taken out after glue polymerisation. Cylinder magnet 7 is assembled on setting base 20 of process cylinder 18 coaxially to setting base 20; glue and process cylinder 18 with magnet 7 are introduced into central opening 6 of shaft 3; upon glue polymerisation process cylinder 18 is taken out. Limiting cylinder element 12 is installed into central opening 6 of shaft 3 till its flat surface 13 contacts internal base 9 of cylinder magnet 7. There are performed gluing and glue polymerisation.

EFFECT: increased efficiency of assembly, simplification of installation, and facilitation of assembly reliability.

6 cl, 5 dwg

FIELD: measuring equipment.

SUBSTANCE: invention is related to instruments for measurement of turn (inclination) angle of objects versus vertical line. Invention objective is improved accuracy and expanded range of angle measurement. Device comprises thermoelement with two pairs of point thermal sensors and heater arranged in the form of cylindrically shaped rod with longitudinal axis oriented perpendicularly to vertical plane of turn. At the same time heater is connected to source of voltage. Besides device comprises measuring circuit, which includes two differential amplifiers and calculation device. Thermal sensors of thermoelement are installed in plane of turn as pairwise on vertical and horizontal axes at identical distances from longitudinal axis of heater.

EFFECT: improved accuracy and expansion of angle measurement range.

4 dwg

FIELD: physics.

SUBSTANCE: device has a thermal converter with three pairs of point thermal detectors and a heater in form of a spherical body, and a measurement circuit having three differential amplifiers and a computing device. The thermal detectors of the thermal converter are paired on three orthogonal axes, equidistant from the geometric centre of the spherical surface of the heater.

EFFECT: high accuracy.

1 dwg

FIELD: physics.

SUBSTANCE: invention relates to determining the state of bearing structures of antenna mast structures (AMS), rapid signalling of change in state thereof and warning on emergency situations and can be used in automated systems for monitoring safety of bearing structures during use of buildings and other structures. The method involves processing parameters of a device which measures linear and angular deviations from the vertical position of the AMS, said device being a three-axis accelerometer mounted on the AMS. Projections of linear acceleration on three orthogonal axes of the accelerometer for at least two successive measurement sessions are measured, and linear and angular deviations from the vertical position of the AMS are calculated from results of selecting and analysing the translational component of dynamic characteristics of the translational-oscillatory motion of the AMS, calculated based on values of said linear acceleration projections.

EFFECT: monitoring the vertical position of AMS with any frequency with automatic measurement.

5 cl, 1 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement of a deviation angle of surface of controlled objects from a basic level, a profile and curvature of surfaces of parts in machine-building industry. A device implementing a method for determining angular positions of object surfaces includes a radiation source, a light-guide system consisting of two harnesses of light waveguides, a photoreceiver, two comparators with different comparison levels, a shaper of comparison levels, two units for detection of middles of electrical pulses, a recording unit of time intervals, an electric motor, an optic head piece and a light waveguide of the optic head piece. The latter is made in the form of a hollow cylinder, and the light waveguide of the optic head piece is installed diametrically in the side wall of the cylinder. Besides, the invention introduces a reference signal mark installed on the optic head piece, a pulse sensor of the reference signal, the output of which is connected to the input of the second comparator.

EFFECT: enlargement of the range of measured angular positions of controlled surfaces by increasing the time of simultaneous existence of sounding and received - reflected radiation flows.

2 cl, 4 dwg

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