SU1312532A1 - Device for checking operate and release voltages of electromagnetic relays - Google Patents

Abstract

The invention relates to electrical engineering and can be used to control electromagnetic relays and switches. The aim of the invention is to increase the monitoring performance by simultaneously parallel monitoring a range of relays. The device contains a controlled voltage generator 1, a voltage source 2, an analog-to-digital converter 3, code converters 4 and 5, as well as a number of identical relay control channels, each of which contains a block 7 of the state monitored relay pulse shaper 8, two elements And 9 and 10, the indicator 11 of marriage. The windings of the monitored relays 6 are connected to the output of the voltage source, the contacts of which are connected to the inputs of pulse shapers. The device provides the possibility of parallel control of the relay and the voltage according to the operating and releasing voltages, indicating the presence of faults and registering the device with the corresponding defective operating and releasing voltages. 3 hp f-ly, 6 ill. I (L UcpaS.1 Uomn UcpaS.n Uomn. P. Fig ,.

Description

The invention relates to electrical engineering and can be used to control electromagnetic relays.

The purpose of the invention is to increase the monitoring performance by parallel monitoring n relays.

FIG. 1 is a block diagram of the device; in fig. 2 - time diagram of the device; in fig. 3 - diagram of the indicator of marriage; in fig. 4 shows a code converter circuit; in fig. 5 - diagram of the pulse forming body; in fig. 6 is a diagram of a controlled generator of linearly varying voltage.

The device contains a controlled oscillator 1, a voltage source 2, an analog-digital converter 3, code converters 4 and 5, as well as "identical control channels of the relay, each of which includes the tested relay 6, block 7 of the monitored relay state fixation, driver 8 impulse, two elements And 9 and 10 and the indicator 11 of marriage; elements AND 12-16, triggers 17 and 18, resistors 19 and 20, LEDs 21 and 22, elements 23 and 24 decryption, switches 25-28, elements OR 29 and 30, elements AND 31-33, triggers 34-38, elements And 39 and 40, elements OR 41 and 42, elements And 43 and 44, elements OR 45 and 46, element AND 47, trigger 48, decryption element 49, resistors 50-54, switch 55, capacitor 56, buffer inverting cascade 57, resistors 58 and 59; buffer inverting cascade 60. Elements 50-60 constitute the linear variable voltage driver 61.

Thus, blocks 6–11 are provided for each relay and their total number is determined by the number of relays simultaneously tested, and the blocks are common to all relays.

The controlled generator contains a linear variable voltage shaper 61 and serves to form a triangular shaped voltage with separate adjustment of amplitude, rise and fall times. The generator works as follows.

Inverted on inverter 47, the signal Trigger Trigger 48 is set to one. The second input of the switch 55 receives the logical “1” signal, and the third input - the logical “O. A positive voltage is connected to the input of the integrator 56 and 57, coming from the variable resistor 52 through the resistor 53. The capacitor 56 starts to charge. At the output of the operational amplifier 57, the negative voltage rises, which is fed to the input of the buffer inverting stage 60 (resistors 58 and 59 set the gain of the stage). At the output of the amplifier 60 (generator output), we obtain a linearly increasing voltage.

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n 5

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In order to establish the moment of switching from the rising voltage to the falling one, a decryption element 49 is used, the input of which is connected to the code of tens volts. With the help of this decoder, you can set the maximum voltage with a multiplicity of. 10V: 10, 20, 30, 40, 50, 60, 70, 80 and 90 V. For this, the reset input of the trigger 48 is connected to the outputs 01, 02, 03, 04, 05, 06, 07, 08 and 09 of element 49 decryption accordingly. FIG. 6, the maximum voltage is set to 30 V. When the voltage on the coils reaches 30 V at output 03 of element 49, the logical signal "O appears and the trigger 48 is reset to zero: The switch 55 now connects the zero potential to the integrator input via a variable resistor 54. Kodsensator 56 begins to discharge. The output of the generator decreases in voltage.

The voltage rise rate can be controlled by resistor 52, and decay by resistor 54. Resistors 50 and 51 are set to increase the level of the logical "1" signal fed to the switch inputs.

Converters 4 and 5 work as follows.

Elements 23 and -24 decryption convert the binary-decimal voltage code coming from block 3 into a decimal code. The first switch (25 and 27) sets the lower threshold of the relay, and the second (26 and 28) sets the upper threshold. The signals from switches 25 and 27 are fed to the first and second inputs of AND 29 (for a logical “O). The third input of this circuit receives a signal from the direct output of the trigger 34. Element 3 is designed to invert the "Trigger" pulse, by which the trigger 34 is set to the zero state. If the voltage now reaches the value set by the first switch (25 and 27), then at all inputs of the element 29 there appear signals of a logical "O, and at its output a signal of a logical" 1. This signal, which is inverted on element 32, sets in one state the trigger 35 and at the output of the block (the output of the trigger) the logical signal "O" appears.

When the voltage reaches the value set by the second switch (26 and 29), the signals of the logical "O appear at the inputs of the element 30 and the signal of the logic" 1, which, after inverting the element 33, sets the trigger 35 to zero the state and output of the block is a logical signal

The pulse shaper 8 operates as follows.

When the relay is turned off, the trigger 36 is in the zero state. At the output of the inverter 39 there is a logical signal “O, and at its output - a logical signal“ 1. Capacitor 50 is charged up to a logic "1" voltage. On one input circuit

And 43 receives a logical signal "Oh, and the other input - a logical" 1. The setup input of the trigger 38 receives a logical signal "1 and does not change the zero state of this trigger, from the inverting output of which the logical signal" 1 is fed to the first input of the OR circuit 45 and prohibits the passage of the sync signal through this circuit.

The "Syncro" signal through the inverter 47 is fed to the second input of the circuit OR 45. When the relay is triggered, the trigger 36 goes into one state. At the output of inverter 39, a logical "O signal" appears. The capacitor 50 begins to discharge through the resistor 48. The logical signal "1" arrives at the first input of the AND 43 circuit, and the logical input of the second input of this circuit also remains, which after some time depends on the time constant of the circuit (48, 50 ) changes to zero signal. Thus, a zero pulse arrives at the installation input of the flip-flop 38 and sets the trigger to one state.

At the first input of the circuit OR 45 a logical “O With the arrival at the second input of the OR 45 circuit, a zero pulse of the syncro signal at the output of the imaging device (the output of the OR circuit 45) appears a trigger pulse. The same pulse, when the inverter passes 41, resets

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the unit state is zero HMnyjibcaN.ni. arriving at the installation inputs. At the same time, the single potential from the direct outputs of the flip-flops 17 and 18 opens the amplifiers 15 and 16 and the current, determined by the resistors 19 and 20, flows through the LEDs 21 and 22, highlighting the presence of creeping and dropping.

FIG. 2 shows a time diagram of the operation of the device as a whole when monitoring two relays. The remaining relays are monitored in the same way. The voltage values are conditional. To simplify the writing of the code value of the converter is not given in binary-decimal, but in decimal form.

The switching code of the generator 1 from direct integration and the reverse is chosen to be 30 V. The validity range of the relay is from 9 to 18 V, and the drop-off is from 9 to 6 V.

Let the first relay operate at 15 V and disappear at 5 V. The second relay operates at 21 V and disappears at 8 V.

The device works as follows.

When the Start-up signal is received, the controlled generator 1 begins to generate a rising voltage, which is monitored and amplified by the power of the voltage source 2 and is applied to the windings of the 6.1-bp relay under test. On the windings of the relay and the input of the unit 3 begins melt20

25

Trigger 38 to its initial state to increase the voltage. Block 3 generates a code

corresponding to this voltage. The voltage code goes to the information inputs of blocks 7.1-7. Fixing for its recording when the relay is triggered or released, to code converters 4 and 5 to open the OR 45 circuit for subsequent sync pulses. The trigger 36 continues to remain in a single state. The output of the inverter 40 is a logical signal ".

The capacitor 51 through the resistor 49 zary - 35 Dividing the zones of validity of the relay and not controlled to a voltage of logical "1. Received generator 1 to determine the moment

switching the rising voltage to a falling one. When the relay is triggered, the pulse shaper 8 generates a signal to write to the fixing unit; the contact of the relay is set aside; trigger 36 returns to the zero state. At the output of circuit AND 44, a zero pulse appears, setting in one state

trigger 37. Logic "O." is set to the first input of the OR 46 40 circuit for storing the voltage, With the arrival at the second input of the OR 46 circuit of the zero signal of the "SynChro" signal at the second output of the driver (circuit output

Vanilla of the relay, the code corresponding to the moment of operation of the relay. The voltage builds up until it reaches the value set in advance on geIL 46) a single impulse appears. A pulse 1. Then a smooth fall begins, releasing the relay. The same impulse, passed. When the relay disappears, the driver 8, the inverter 42, resets the trigger 37.

Indicator 11 marriage XI.

A single signal, Start-up inverted by element 12, is sent to the reset inputs of the flip-flops 17 and 18, setting the latter to the zero state. The amplifiers made on the elements 15 and 6 are closed, and the luminescence of the LEDs 21 and 22 processes the signal to write to block 7, which is reserved for storing the voltage of this relay, the code corresponding to the moment of release of the relay.

The formers 8 are gated with pulses of block 3 in order not to emit a signal at the moment of code change.

At the same time, the decimal voltage code is analyzed by the 4 and 5 code converters. If the voltage is in the same time, the decimal voltage code is analyzed by the 4 and 5 code converters. If the voltage is intact. With the appearance of a single pulse of 55 times valid for a given type of relay, then a "Operation Failure or Failure Failure Output of the Transmitters is given a logical zero. When the voltage out of the expiration zones, the output appears logical

at the inputs of the inverters 13 and 14, respectively, the triggers 17 and 18 are set to

0

the unit state is zero HMnyjibcaN.ni. arriving at the installation inputs. In this case, the unit potential from the direct outputs of the flip-flops 17 and 18 opens the amplifiers 15 and 16 and the current, determined by the resistors 19 and 20, flows through the LEDs 21 and 22, highlighting the presence of creeping and dropping.

FIG. 2 shows a time diagram of the operation of the device as a whole when monitoring two relays. The remaining relays are monitored in the same way. The voltage values are conditional. To simplify the writing of the code value of the converter is not given in binary-decimal, but in decimal form.

The switching code of the generator 1 from direct integration and the reverse is chosen to be 30 V. The validity range of the relay is from 9 to 18 V, and the drop-off is from 9 to 6 V.

Let the first relay operate at 15 V and disappear at 5 V. The second relay operates at 21 V and disappears at 8 V.

The device works as follows.

When the Start-up signal is received, the controlled generator 1 begins to generate a rising voltage, which is monitored and amplified by the power of the voltage source 2 and is applied to the windings of the 6.1-bp relay under test. On the windings of the relay and the input of the unit 3 starts melt0

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° increase voltage. Block 3 generates a code

corresponding to this voltage. The voltage code is fed to the information inputs of blocks 7.1-7. Fixing for recording when the relay is triggered or released, to code converters 4 and 5 for restoring this relay, the code corresponding to the moment the relay operates. The voltage rises until it reaches the value set in advance on generator 1. Then a gradual decline begins. When the relay drops, the driver 8 converters 1. Then the smooth decline begins. When the relay drops, the driver 8 generates a signal to write to block 7, allotted for storing the voltage drop of a given relay, a code corresponding to the moment when the relay is released.

The formers 8 are gated with pulses of block 3 in order not to emit a signal at the moment of code change.

At the same time, the decimal voltage code is analyzed by the 4 and 5 code converters. If the voltage is in the fitness zones for this type of relay, then a logic zero is output to the output of the converters. When the voltage out of the expiration zones, the output appears logical

ediv: ita. The signals from blocks 4 and 5 are received by the elements AND 9.1-9.p, 10.1-U.p. To the other inputs of which the pulses come from the formers 8.1-8.p. When two single signals coincide at the inputs of the AND elements, a rejection impulse appears at their outputs, which is indicated on the indicator

11 shelf life.

When the voltage drops to zero, the operation of generator 1 is terminated before the arrival of a new "Start. The trip and trip folders for each relay are stored in the respective latching blocks and can be output to known display devices (not shown).

Claims (4)

Invention Formula 1. A device for monitoring the operation and release voltages of an electromagnetic relay, containing a voltage source, an analog-to-digital converter, a linearly varying voltage controlled generator, and a first control channel containing the first and second And elements and the latching unit of the monitored relay , the output of the controlled generator 25 of the linearly varying voltage is connected to the input of the voltage source, the output of which is connected to the output of the device, which serves to connect the winding of the controlled relay and to the input an analog-to-digital converter, a code zonal and second deciphering elements, the first output of which is connected to information 2. The device according to claim 1, characterized in that the controlled variable voltage generator includes a linear variable voltage driver, a trigger, an inverter and a decryption element, the input of which is the control input of the controlled generator of a linearly varying voltage, and the output connected to the reset input of a trigger, the setup input of which is connected to the output of the inverter whose input is input trigger controlled oscillator linearly varying voltage and zero unit outputs a trigger connected to the input of linearly varying voltage whose output is the output of the controlled oscillator linearly varying voltage. 3. Device according to claim 1, characterized in that the code converter comprises a first 40 The main input of the latching unit of the monitored relay, characterized in that, in order to improve the performance of the device by parallel monitoring of the n relay, the first and second code converters are inserted into it and the first channel of the control — the pulse shaper and the reject indicator; additionally n - 1 identical control channels, the control inputs of the latching unit of the monitored relay, as well as the first inputs of the first and second elements And are connected to the outputs of the pulse former, the synchronization input is connected A sync output of an analog-digital converter whose code output is connected to the control input of a controlled voltage generator and the information inputs of the first and second code converters, the control inputs of which are control inputs of the device, the input start-up of the device is connected to the installation inputs of the first and second converters of the code and the reject indicator and to the start-up input of the controlled generator of linearly varying voltage, outputs of the first and volt cerned transducers 55 the first and second switches, the first and second switches, the first, second and third inverters, the first and second triggers, the inputs of the first and second decryption elements are connected to the information input of the code converter, and the outputs are connected to the first contact groups of the first and second switches that control the inputs of the first and second switches are the control inputs of the code converter; the second groups of contacts of the first and second switches are connected respectively to the first and second inputs of the first and second elements And, the outputs of which are connected to the inputs of the first and second inverters, the outputs connected respectively to the reset input and to the installation input of the second trigger, the output of which is the output of the code converter, the third input of the first element I is connected to the forward output of the first trigger connected to the input with the output the first inverter, the input of which is the installation input of the code converter. 4. A device according to claim 1, characterized in that the fixing unit of the state of the monitored relay is made in the form of memory registers. second and second elements of decryption, When the code is connected to the second inputs of the first and second elements I, the outputs connected to the inputs of the reject indicator, the information inputs of the pulse shapers are the device inputs for connecting the contacts of the monitored relays, the outputs of the latching unit of the monitored relay state are the control outputs The ramp voltage generator is the input to the reference voltage supply device. 2. A device according to claim 1, characterized in that the linearly controlled voltage controlled generator comprises a linear variable voltage driver, a trigger, an inverter and a decryption element, the input of which is the linear variable voltage controlled generator input and the output is connected to the reset input of the trigger, the setup input of which is connected to the output of the inverter, the input of which is the trigger input of the controlled oscillator of the linearly varying voltage, single and zero outputs of the trigger connector Nena linearly with input of varying voltage, the output of which is the output of the controlled oscillator linearly varying voltage. 3. The device according to claim 1, characterized in that the code converter comprises first and second decryption elements, first the first and second switches, the first and second switches, the first, second and third inverters, the first and second triggers, the inputs of the first and second decryption elements are connected to the information input of the code converter, and the outputs are connected to the first contact groups of the first and second switches that control the inputs of the first and second switches are the control inputs of the code converter; the second groups of contacts of the first and second switches are connected respectively to the first and second inputs of the first and second elements And, the outputs of which are connected to the inputs of the first and second inverters, the outputs connected respectively to the reset input and to the installation input of the second trigger, the output of which is the output of the code converter, the third input of the first element I is connected to the forward output of the first trigger connected to the input with the output the first inverter, the input of which is the installation input of the code converter. 4. A device according to claim 1, characterized in that the fixing unit of the state of the monitored relay is made in the form of memory registers. Running Exit CLAY Remove source one one Code 03 6 3 12 15 IS 212 21302124211B 1512 9 V 3 O vaterl-- State ii 1-zo relay - The 2nd state is in With agnal writing Israv 1, Signal Iotp. 1L Signal Record | Isro52 Signal recording 1 iot.2 Vymd decoder 1 Discharge rotor output 8 Marriage sra5. 1st relay marriage from the 1st relay fights crab. 2nd relay Marriage off. 2nd relay F1 / g.2 Vlak is triggered / Stress code l CpaSantbiBanue L- Release Run Out 6 Compiled by V. Voronov Editor P. GereshiTehred I. VeresKorrektor E. Roshko Order 1842/45 Circulation 864 Subscription VNIIPI USSR State Committee for Inventions and Discoveries I3035, Moscow, Raushsk nab., 4/5 Production and Printing Infrastructure, Uzhgorod, ul. Project, 4