SU1348776A1 - Electromagnet checking device - Google Patents

Abstract

The invention relates to instrumentation technology and can be used to monitor the parameters of DC electromagnets without their own contact groups. The aim of the invention is to increase the completeness and accuracy of control by increasing the number of monitored parameters. The device contains a power supply unit, a switch, keys, a pulse generator, a current sensor, a differentiating amplifier, a limiter amplifier, triggers, amplitude detectors, output terminals, subtraction units, memory elements, tolerance control units, a differentiating element, a stable current generator, a threshold block, one-shot, elements OR, delay elements, elements And, counters, elements BAN and the display unit. The units of the device are executed on diodes, capacitors, voltage repeaters, switches, operational amplifiers, and resistors. The device provides not only the recording of the fact of the electromagnet triggering, the determination of the actuation current and the threshold control of the linear displacement of the core, but also the trigger time, the magnitude of the core displacement, the value stabilized after the current is triggered, the ratio between the trigger currents and the established while checking all parameters are normal. , 2 il., Fi (L with 4 00 05

Description

113

The invention relates to instrumentation technology and can be used to monitor the parameters of DC electromagnets that do not have their own contact groups.

The purpose of the invention is to increase the completeness and accuracy of the control by providing a measurement of the response time and determining the ratio between the response current and the current established after the electromagnet has triggered, as well as ensuring that the actual value of the response time, the linear displacement of the core, the current value after the electromagnet is detected and the relationship between the response currents and the steady-state, while simultaneously monitoring all parameters of the electromagnet on the corresponding not their required standards.

FIG. 1 shows a block diagram of the device; in fig. 2 - timing charts explaining the operation of the device.

The device includes a power supply unit 1, a switch 2, a first switch 3, a generator of 4 pulses, inputs 5 and 6 of the device for connecting a control object, a current sensor 7, a differentiating amplifier 8, a limiting amplifier 9, the first trigger 10, the first amplitude detector 11, the first key 12, the first output terminal 13, the first subtraction unit 14, the first storage element 15, the second output terminal 16, the first admission control unit 17, the differentiating element 18, the eighth trigger 19, the second storage element 20, the generator 21 stable current, n ta output bottom terminal 22, threshold unit 23, sixth one-shot 24, third trigger 25, second element OR 26, first delay element 27, eleventh trigger 28, fifth key 29, second amplitude detector 30, third output terminal 31, second subtraction unit 32, the sixth key 33, the fourth output terminal 34, the second block 35 of the tolerance control, the second delay element 36, the tenth trigger 37, the third 38, the fourth 39, the seventh 40, the eighth 41, the ninth 42, the tenth 43 keys, the fourth 44 and p 45 triggers, the first element And 46, the second one-shot 47, the second counter 48 pulses, neck762

49 and seventh 50 trigger, the second element And 51, the third one-shot 52, the third counter 53 pulses, the second trigger 54, the second element 55 BAN, the fourth one-shot 56, the first counter 57 of pulses, the first one-shot 58, the first element 59 BAN, the third element 60 BAN, the first element OR 61, the input 62 of setting the device to its initial state, the third element OR 63, the fourth element 64 BAN, the fifth one-shot 65, the ninth trigger 66, the display block 67.

The first amplitude detector is made, for example, on a diode 68, a capacitor 69, a voltage follower 70, a switch 71, an operational amplifier 72, and a resistor 73.

The first subtractor consists of an opamp 74 and resistors 75-78.

The first memory element includes, for example, a capacitor 79, a voltage follower 80 and keys 81, 82.

The first tolerance control unit is made, for example, on operational amplifiers 83, 84 and resistors 85-88.

The second amplitude detector consists of a diode 89, a capacitor 90, a voltage follower 91, a switch 92, an operational amplifier 93, and a resistor 94.

The second subtraction unit includes, for example, operational amplifiers 95, 96 and resistors 97-103.

A stable current generator is made, for example, on operational amplifiers 104, 105 and resistors 106-1.

The second memory; the element consists of a capacitor 111, a follower 112 of the voltage, and keys 113, 114,

The threshold unit includes, for example, an operational amplifier 115 and resistors 116, 117.

The second tolerance control unit is made, for example, on operational amplifiers 118, 119 and resistors 120-123.

A limiting resistor 124 is installed in the circuit between the output of the second storage element and the input of the ninth key.

The display unit is made, for example, on LEDs.

Voltages U, Ug, U, Ug, are applied to the reference inputs of the device.

The device works as follows.

Before starting the test, the object to be monitored (the electromagnet winding) is connected to the inputs 5 and 6 of the device, and a short pulse is fed to the input 62 (Fig. 2a) to reset the device to its initial state. The leading edge of this pulse, the trigger 66 is set to state 1 (Fig. 2u), and the signal from its direct output closes key 3, connecting the input of the generator 4 pulses to the switch 2; Counters .48, 53, and 57 are installed in О. Passing through an OR 61 element, this pulse sets state 1 to trigger 28 (Fig. 2m), and a switch 29 closes the signal from its direct output, connecting the input of detector 30 to sensor 7 current is set to state 1 of the trigger 25, and the signal from its output closes the key 82, connecting the storage element 15 to the output of the block 14; Triggers 37, 44, 45, 49, 50, 54 are set to state 1, as a result of which the inverse outputs of these triggers are set to O (in Fig. 2c, t shows the signal to the inverse outputs of triggers 37 and 54, respectively), and the falling edge the zeroing pulse trigger 10 is set to state 1. The key 12 is closed, the detector 11 is connected to the current sensor 7, and after passing through the OR element 26, this pulse sets the trigger front 19 on the inverse output to the O state (FIG. 2d) key 113 remains open.

In addition, the keys 71, 81, 92, 114 are closed for the duration of the zero pulse, thereby discharging the capacitors 79, 69, 90, 111 of the amplitude detectors 11, 30 and the storage elements 15, 20, respectively.

Thus, in the initial state of the circuit, the keys 3, 12, 29, 82 are closed, and the keys 33, 38, 39, 40, 41, 42, 43, 71, 81, 92, 113, 114 are in the open state .

The operation mode of the blocks 14, 32 and one vibrator 24, 47, 52, 56, 58, 65 is chosen so that in the initial state their outputs are set to zero

five

How many voltage levels, as well as at the output of the threshold block 23.

To start the electromagnet checks, they close circuit breaker 2. In this case, a generator of 4 pulses is started through a closed key 3 and generates square pulses (Fig. 26), which are fed to device input 5 and, having passed through an electromagnet winding (not shown), to input 6 and sensor 7 current. On the leading edge of the control pulse, a pulse is formed by the differentiating element 18 (Fig. 2d), the leading edge of which

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the trigger 19 is set to the state O, and a signal 1 appears at its inverse output (Fig. 2d), under the action of which the switch 113 of the storage element 20 closes, and a linear charge of the capacitor 111 starts through the stable current generator 21 (Fig. 2e).

The current in the winding of the electromagnet increases according to a certain law. The voltage drop on the current sensor 7 (Fig. 2c) from the value of U to the value and proportional to the current flowing through the electromagnet is differentiated in time by the differentiating amplifier 8, and the limiting amplifier 9 selects and pulses the negative field phase (Fig. 2i), at the falling edge of which the trigger 10 is set to the state .O. In this case, the switch 12 is turned off, and the capacitor 69 is charged according to the circuit to the amplitude value of the voltage U ,, corresponding to the operation current of the electromagnet (Fig. 2g). This voltage is supplied to the output terminal 13 and the first input of the subtraction unit 14, to the second input of which the voltage comes from the current sensor 7. In this case, the output of block 14 is set to a voltage equal to the difference in voltage corresponding to the beginning (U () and end (U) of the movement of the electromagnet core (Fig. 2c) when it operates. The voltage from the output of block 14 is fed to the input of the storage element 15 and through key 82, it is stored on capacitor 79 (Fig. 2n, and o).

In addition, when the occurrence is 1 to 5 inverse of the trigger output 10, the one-shot 24 is triggered and generates a pulse (Fig. 2k), on the leading edge of which the trigger 25 is set to the state O due to

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key 82 is disconnected, and the stored voltage equal to the voltage difference IJ, -U (Fig. 2n, and, e) corresponding to the actual linear displacement of the electromagnet core enters through the voltage follower 80 on

It goes to the output terminal 31 and to the first subtraction unit 32, on the second exit of which, via the key 33, the voltage U comes, corresponding to the response of the electromagnet, the output of the amplitude detector 11 (Fig. 2g), and the output voltage of the unit 32 equal to p

output terminal 16 and the first input voltage U, -U, (fig. 2p),

17, which carries out tolerance control of this voltage with respect to the reference voltages U,,

The determining factor is the actual ratio of the GOKS operation and the electromagnet which has set after the operation (Fig. 2n, and), which arrives

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selected from the condition minimum

(J

and

admissible (, t and maximally admissible (and.,) values of peremeg; yeni core of an electromagnet.

At the same time, having passed through the element OR 26, the indicated pulse arrives at the second input of the trigger 19 and the

one

casts it into a state

following

What is installed on its inverse output is O (Fig. 2d), which leads to the opening of the key 113 and the termination of the linear charge of the capacitor 111 of the element 20 (Fig. 2e), and the amplitude of the voltage of the charge of the capacitor on a certain scale corresponds to the actual time the operation of the electromagnet 1 | .p (Fig. 2e, i), which through the voltage follower 112 is supplied to the output terminal 22 and to the input of the threshold unit 23, which performs the threshold control of this voltage with respect to the reference voltage Uj, selected from the condition permissible response time (g) of an electromagnet specified by technical conditions on an electromagnet.

According to the scheme, the capacitor §0 is charged through the switch 29 to the amplitude value of the voltage Uj, corresponding to 25 (Fig. 2p), after a time t sufficient to terminate the transients caused by the operation of the electromagnet, enters the first input of the trigger 37 and sets it to O, as a result of which voltage 1 appears at its inverse output, under the action of which the keys 38-43 operate, and a cycle of control of all parameters is formed. In this case, if the linear movement of the electromagnet core is in the optimal norm, then the outputs of the operational amplifiers 83, 84 of the block 17 contain signals 1, which through the keys 38 and 39 arrive at the first inputs of the flip-flops 44 and 45, respectively, and set them to O, and signals 1 from the inverse outputs of these triggers are received from the first and second inputs of the

after the operation of the electromagnet (Fig. 2h), since the pulse (Fig. 2d) 5th And 46, which is triggered and passed through the delay element 27, starts the one-shot 47, at the output

FIG. 2l), after the time tz, sufficient to reach the maximum voltage Lj, arrives at the first input of the trigger 28 and sets it to the state O (Fig. 2m), as a result of which the switch 29 opens and the switch 33 closes. The capacitor 90 of the amplitude detector 30 records the stored amplitude value of the voltage U corresponding to the set value of the current after the operation of the electromagnet (Fig. 2h), which is generated by a counting pulse (Fig. 2f), which is fed to the counting input of the counter 48 and recorded

50 in this pulse counter.

If the ratio of the current srabatsha-NIN and the set value after the operation of the electromagnet is within the normal range, then the outputs

55 of block 35, signals 1 are present, which through the keys 40 and 41 arrive at the first inputs of the flip-flops 49 and 50 and set them to the state O, and the signals 1 from the inverse outputs

It goes to the output terminal 31 and to the first subtraction unit 32, on the second exit of which, via the key 33, the voltage U comes, corresponding to the actuation of the electromagnet, from the output of the amplitude detector 11 (Fig. 2g), and the output of the unit 32 is set to equal times

determines the actual ratio of GOKOV operation and the electromagnet which has been set after operation (Fig. 2n, and), which goes to

g output terminal 34 of the device and to the input of the unit 35, which performs tolerance control of this voltage with respect to the reference voltages Ug and and selected from the conditions of the minimum allowable and maximum allowable values of the monitored currents, respectively.

In addition, the pulse (Fig. 2d), the second delay element 36 has passed

5 (Fig. 2p), at a time t sufficient to terminate transients caused by the operation of an electromagnet, enters the first input of the trigger 37 and sets it to the state O, as a result of which voltage 1 appears at its inverse output which keys 38-43 are triggered, and a cycle of control of all parameters is formed. In this case, if the linear movement of the electromagnet core is in the optimal norm, then the outputs of the operational amplifiers 83, 84 of the block 17 contain signals 1, which through the keys 38 and 39 arrive at the first inputs of the flip-flops 44 and 45, respectively, and set them to O, and signals 1 from the inverse outputs of these triggers are received from the first and second inputs of the

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0 - ,.

 5 ment And 46, which is triggered and starts the one-shot 47, the output

which is formed counting pulse (Fig. 2f), which is fed to the counting input of the counter 48 and recorded

in this pulse counter.

If the ratio of the current srabatsha-NIN and the set value after the operation of the electromagnet is within the normal range, then the outputs

block 35, there are signals 1, which through the keys 40 and 41 arrive at the first inputs of the flip-flops 49 and 50 and set them to the state O, and the signals 1 from the inverse outputs

these triggers are received respectively at the first and second inputs of the element 51, as a result of which the output of the element 51 generates a signal 1, under the action of which the one-shot 52 operates and generates a counting pulse (Fig. 2x), which is fed to the counting input of counter 53.

If the response time tp of the electromagnet is within the normal range, then the output of block 23 maintains a zero voltage level, therefore, the trigger 54 remains in state 1 and the inverse output of the trigger 54 maintains the logic zero level (Fig 2T), which is not affects the operation of the element 55 BANGE, as a result, when voltage is applied from the output of block 20 through the key 42 to the first input of element 55 BAN, this element is triggered and starts the one-shot 56, the output of which produces a pulse (Fig. 2y), which arrives counting in counter running 57.

In addition, when triggering the trigger 10 and appearing 1, at its inverse output, the one-oscillator 58 triggers and generates a pulse (FIG. 2c) that goes to the first input of the BANE element 59, the inverting input of which contains a signal from the output of the pulse generator 4 and It prohibits its activation for the duration of this pulse (Fig. 2b). At the end of the pulse from the output of the generator 4 pulses (Fig. 26), the prohibition signal is removed from the inverting input of the element 59, to the first input of which a pulse arrived from the output of the one-oscillator 58 (Fig. 2c). At the same time, at the output of the BANKS element 59, a pulse is formed (Fig. 2e), which is fed to the first input of the BANNER element 60. If all monitored parameters are within the required norm, then at the output of element 63 in the control cycle, the level O is maintained, which is fed to the second inverting input of element 66 and does not affect its operation. As a result, the pulse (Fig. 2e) from the output of the BANCH element 59, passing through element 60, goes to the first input of the OR element 61, and passing through the element 61, prepares the control circuit to receive the next control pulse from the generator 4 output. triggers 10,

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25, 28, 37, 44, 45, 49 and 50 are set to state 1, which ensures the closure of the keys 12, 29, 82 and the opening of the keys 33, 38, 39, 40, 41, 42, 43, and for the duration of The pulse switches are closed with the keys 71, 81, 92, 114, providing the discharge of capacitors 69, 79, 90, 111.

At the end of the pulse (Fig. 2e), the monitoring cycle ends, and the device is ready for the next cycle. At the same time in counters 48, 53, 57 one impulse is recorded, which indicates that one monitoring cycle is carried out and that all the monitored parameters are normal, which in turn indicates the operability of the electromagnet and its suitability for operation.

When any of the monitored parameters deviates from the norm, a counting pulse on this parameter is not formed in the cyclic control. Thus, for example, if the response time of an electromagnet exceeds the norm (Fig. 2e), then when the amplitude of the charging voltage of the capacitor 1 I 1 is reached at block 22 of the reference voltage Us (Fig. 2e), block 23 is triggered, the output of which is the positive polarity voltage, under the action of which the trigger 54 is set to the state O, resulting in the inverse output of the trigger 54 appears signal 1 (Fig. 2T), which enters the inverting input of the BANGE element 55 and prohibits its operation, as well as to the fifth inputs of the display unit 67 and OR 63. At the same time, the banner NOT NORM C is turned on on the display unit, and the output of the OR element 63 is a signal 1, which is fed to the second inverting input of the BAN element 60 and prohibits its operation.

During the formation of a control loop by triggering the trigger 37 and closing the switches 38-43, the control of the parameters that are normally carried out is carried out as described above. At the same time, at the outputs of elements And 46, 51, counting pulses are formed (fig, 2f, x), which are recorded in counters 48 and 53, respectively, and when voltage U, (fig, 2e) comes from the output of block 20 to the first input of element 55 BAN THIS ELEMENT DOES NOT WORK BECAUSE IT'S SILO ON

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Inverting input signal contains signal 1 from inverted output of trigger 54, which prohibits the operation of element 55 of the prohibition, as a result of which the single-oscillator 56 does not start and the counting pulse is not generated (Fig. 2u). The pulse of preparation of the circuit for the next control cycle does not flow ( Fig. 2h), since the signal of the logical unit from the output of the SHSh 63 element is fed to the inverting input 60 of the PROHIBITION and prevents its activation. In this case, the signal 1 from the output of the element OR 63 through the closed key 43 posta also goes to the first input of the element 64 BANGE, the second input of which contains a signal from the output of the generator of 4 pulses and prohibits the operation — 2o that element does not work, is not set element 64 at the time of action, a one-shot 46 and a non-boarding pulse (Fig. 2b) is started, upon termination of which element 64 operates and starts a one-shot 65, the output of which produces a pulse (figure 2) of a fault that goes to the first input of the trigger 66 and getting tired Puts it into the state O (fig. 2u), as a result, the key 3 is opened, the generator 4 is disconnected from the power supply unit and the control pulses are stopped on the electromagnet winding, and at the moment of failure the actual values of all monitored parameters are remembered, including a parameter that is not normal, which can be determined by measuring the voltages at the output terminals 13, 16, 31, 22, 34, the parameters are proportional to the response current (), linear displacement of the electromagnet core S. yc current after actuation of the electromagnet (1) response time () sootnoscheniyu currents ustanovivshemus actuation and after actuation of the electromagnet.

In addition, the signal of the logical unit from the inverse output of the trigger 66 is supplied to the sixth input of the block 67 and includes the banner BRAC.

Thus, at the end of the monitoring cycle, two pulses will be recorded in counters 48 and 53, and only one will be recorded in counter 57, indicating that two monitoring cycles have been carried out and the parameter that is not normal in time has been output.

8776

the electromagnet, which in this case is rejected.

Similarly, a pulse for counters 48 and 53 will not be generated in the 11th case of finding the parameters, the control results of which are recorded by these pulse counters, are not normal.

Thus, during linear movement of the electrically-driven VI-magnet, the maximum allowable value at the output of the operational amplifier 83 of block 17 in the control cycle contains an O signal, as a result, the trigger 44 in the O state is not set and the O signal is present at its inverse output element And 46, therefore

ten

15

five

A pulse is counted at the counting input of the pulse counter 48. When this signal 1 from the direct output of the trigger 44 5 is fed to the first inputs of the element OR 63 and the display unit, which provides the formation of a fault pulse and the inclusion of the banner S NORMAL,

0

With linear movement of the core;

the electromagnet is less than the minimum acceptable value at the output of the operational amplifier 84 of block 17 in the control cycle there is a logical zero signal, which leads to a failure of the trigger 45, as a result, the element 46 does not work, the one-shot 47 does not start and the pulse 48 is not generated. the signal of the logical unit from the direct output of the trigger 45 is fed to the second inputs of the element OR 63 and block 67, providing the formation of a fault pulse and the inclusion-transparency S of the NORMAL,

If the voltage corresponding to the ratio of the operation currents to the set value after the electromagnet has been activated is outside the maximum permissible value, then the output of the operational amplifier 118 of the unit 35 has a logical signal in the control loop.

5 who have zero, which leads to the failure of the trigger 49, as a result of which the element 51 and the single vibrator 52 do not work and a pulse is not generated at the input of the counter 53,

0

In this case, the signal of the logical unit from the direct output of the trigger 49 is supplied to the third inputs of the OR element 63 and block 67, ensuring the formation of a malfunction pulse and the inclusion of the NORMAL 1 banner.

If the voltage corresponding to the ratio of the operation currents and the steady-state value after the operation of the electromagnet is outside the minimum allowable value, then the output of the operational amplifier 119 in the control cycle has a logical zero signal, which causes the trigger 50 to not work, as a result of which And 51 does not work, a single-vibrator 52 is not started and a pulse is not generated at the input of the counter 53. In this case, the signal 1 from the direct output of the trigger 50 is supplied to the fourth inputs of the OR element 63 and block 67, espechiva pulse formation failure and switch transparency STANDARDS

Claims (1)

Invention Formula Electromagnet control device containing power supply, switch, first and second keys, pulse generator, current sensor, differentiating amplifier, limiting amplifier, first and second triggers, first pulse detector, first output terminal, first subtractor, first one-shot, first element BANKS the first and second elements OR, the first element AND, the differentiating element, the threshold unit and the first and second counters, the reset inputs of which and the first input of the first element OR are connected to the device installation input In the initial state, the output of the threshold unit is connected to the zero input of the second trigger, the direct input of the first element is prohibited by the first one-vibrator connected to the inverse output of the first trigger whose input, the first input of the second OR element and the control input of the first the amplitude detector is connected to the output of the first OR element, and the zero input is connected to the output of the limiter amplifier, whose input is connected to the output of the differentiating amplifier, which is connected to the output of the sensor current , Also connected to the information input vtorog five 0 key and to the input of the deductible first subtraction unit, the input of which is decremented is connected to the code of the first amplitude detector connected to the first output terminal, the output of the second key is connected to the information input of the first amplitude detector, the control input of the second key is connected to the forward output of the first trigger, the inverting input of the first element BANGE and the input of the differentiating element are connected to the output of the pulse generator, the input of which is connected to the output of the first key connected to the information input of black A switch with the output of the power supply unit, the outputs of the pulse generator and the current sensor serve to connect the test object, the output of the first element OR is connected to the single input of the second trigger, characterized in that, in order to increase the completeness and accuracy of the control, the first and second memory elements are entered , the first and second blocks of the tolerance control, the second amplitude detector, the second subtraction unit, the stable current generator, the third, fourth, fifth, sixth, seventh, eighth, ninth, tenth and eleventh triggers, the first and the second delay elements, the third, the fourth, the fifth, the sixth, the seventh, the eighth, the ninth and the tenth keys, the second, the third the 5th and the fourth elements BAN, the third OR element, the indication block, the second, the third, the fourth, the fifth, and the sixth one is the new vibrator, the second element is AND, the second, third, fourth, and n that weekend five 0 0 five 0 five terminals, first, second, third, fourth and fifth voltage supply terminals and a third counter, the reset input of which and the single input of the trigger trigger are connected to the device setup input of the initial state, the direct input of the third BAN element is connected to the output of the first element} 1TA BANCH, the inverting input to the output of the third element OR, and the code to the second input of the first OR element connected to the output of the reset inputs of the first and second storage elements and to the single inputs of the third, fourth, p pole second, seventh, tenth and eleventh triggers inverted output of the first flip-flop is connected to the input schestogo monostable multivibrator, whose output is coupled to the second input of the secondary the OR element and with the zero input of the third trigger, connected by a direct output to the control input of the first storage element, whose information input is connected to the output of the first subtraction unit, and the output to the second output terminal and to the information input of the first block 15 20 25 thirty the tolerance control, the first and second Q dy of the fourth, fifth, sixth and reference inputs connected respectively to the first and second terminals of the reference voltage supply, and the first and second outputs to the 1 mts information inputs of the third and fourth keys, respectively, control inputs which, as well as the control inputs of the seventh, eighth, ninth and tenth keys are connected to the inverse output of the tenth trigger connected by the zero input to the output of the second delay element, the input of which and the zero input of the eleventh trigger with In the output of the first delay element, the input of which and the zero input of the eighth trigger are connected to the output of the differentiating element, the single input of the eighth trigger is connected to the output of the second OR element, and the inverse output to the control input of the second memory element, whose information input is connected the output of the stable current generator, and the output with the fifth output terminal and with the information inputs of the ninth key and the threshold unit; the reference input of the threshold unit is connected to the fifth terminal of the reference voltage supply , the output of the ninth key is connected to the direct input of the second BANCH element associated with the output of the fourth one-shot, the output of which is connected to the counting input of the first counter, the first, second, third, fourth and fifth inputs of the display unit and the third element OR are connected to direct outputs, respectively, of the fourth, fifth, sixth and seventh flip-flops and to the inverted output of the second flip-flop, also connected with the inverting input of the second element BAN, the first inputs of the first and second elements And the connection; with inverse outputs, respectively the seventh flip-flops are connected to the outputs of the third, fourth, seventh and eighth keys, respectively, and the formation inputs of the seventh and eighth keys are connected respectively to the first and second outputs of the second control tolerance terminal, connected to the third and fourth terminals, respectively the reference voltage, and the information input - to the fourth output terminal and to the output of the second subtraction unit, connected to the output of the second amplitude detector, and the output of the second amplitude detector the sixth key, the information input of which is connected to the output of the first amplitude detector, controls to the inverse output of the eleventh trigger, connected to the direct output to the control input of the fifth key connected to the information input to the output of the sensor, and the codes to the information input 35 house of the second amplitude detector control 1 1 EI whose input is connected to the output of the first element OR, in the stable current generator, connect to the switch, the generator output 40 pulses are connected to the inverting house of the fourth BANGE element, connected by a direct input to the output from that key connected by an information input with the output of the third 45 ment of ШШ, the output of the fourth element BREAD is connected to the input of the fifth vibrator, the output of which is connected to the zero input of the ninth trigger connected with the direct output from the control The 50th l input of the first key, and the reverse output, with the sixth input of the display unit. the fourth and sixth flip-flops, the second inputs - with inverse outputs, respectively, of the fifth and seventh flip-flops, and the outputs, respectively, with inputs of the second and third one-oscillator, connected by outputs to the counting inputs, respectively, of the second and third counters, zero input dy of the fourth, p of the sixth and the seventh flip-flops are connected to the outputs of the third, fourth, seventh and eighth keys, respectively; the information inputs of the seventh and eighth keys are connected respectively to the first and second outputs of the second tolerance control unit connected to the third and fourth reference terminals of the reference voltage and the information input to the fourth output terminal and to the output of the second subtraction unit, connected with the input decreasing with the third output terminal and with the output of the second amplitude and the input of the sixth key readable with the output, the information input of which is connected to the output of the first amplitude detector, and the control one to the inverse output of the eleventh trigger connected to the direct output of the fifth input connected with the information input of current sensor output, and the codes with information input the house of the second amplitude detector, whose control is 1EI, the input of which is connected to the output of the first element OR, the input of the stable current generator is connected to a switch, the output of the generator is pulses is connected to the inverting input of the fourth BANCH element connected by a direct input to the output of the tenth key connected by the information input to the output of the third elec The loop, the output of the fourth BANCH element is connected to the input of the fifth single-vibrator, the output of which is connected to the zero input of the ninth trigger connected by a direct output to the control input of the first key, and the inverse output to the sixth input of the display unit. 5188/46 Circulation 862 Subscription VNII1Sh State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4