SU1392543A1 - Device for checking electric stopwatch - Google Patents

Description

(21) 4112842 / 24-10

(22) 06.24.86

(46) 04/30/88. Bul № 16 (72) V.N. Katyshev

(53) 681.11 (088.8)

(56) USSR Copyright Certificate No. 390500, cl. G 04 F 7/00, 1971.

USSR Author's Certificate No. 11230I8, cl. G 04 F 7/00 ,. 1982

(54) DEVICE FOR ELECTRICAL SECOND / CHECK TESTS

(57) The invention relates to a measurement technique. The purpose of the invention is to increase the reliability of verification. When the Start button is pressed, the signal from the ramp 6 starts the relay 7 or 8, including the stopwatch 4, the counter 10 is simultaneously started. The time interval in the code comes from the setting device 9 and is fixed by the memory register. The information is displayed on the scoreboard 12. The counting signal from the counter 10 is fed to the input of the imaging unit 6, which generates a signal to turn off the relay 7 or 8. At the same time, the counting signal comes to the setting unit 9. rewrites the memory register to the counter 10, the alarm 14 starts. the end of the calibration cycle. 4 il.

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The invention relates to a measurement technique and can be used for the calibration of electric stopwatches.

The value of the invention is to increase the reliability of the juver by switching on the stopwatch at the moment of maximum ammunition and current feeding.

FIG. 1 shows a block diagram of the device; in fig. 2 - the synchronizer circuit is functional; in fig. 3 is a functional diagram of a first electronic relay for e.artic stopwatches with an electromagnet for starting a non-alternating current; in fig. 4 is a functional diagram of a second electronically controlled relay for electric stopwatches with a vibration drive.

The device for checking electric stopwatches (Fig. 1) contains a unit 1 of the reference frequencies, a shaper 2 of the harmonic signal, a power amplifier 3, check 1 1e of the electrical section 4, a synchronizer 5 on, a shaper 6 of the control voltages, the first 7 and the second 8 electron Hb ie relay, master of 9 time intervals, reversible counter 10, decryptor 11, block 12 of indication I, counter 13 cycles and a signaling device 14.

The first output of the reference frequency unit 1 is connected via a shaper of a harmonic signal 2 and a turn-on synchronizer 5 to the first input of the control voltage generator 6, the first output of the KOTopoi o is connected to the first input of the reversible counter I). The second output of the frequency support unit 1 is connected via a reversible counter 10 to the second input of the formation; 1 () at the relay; voltages, the second KOTopoi c.) is connected via a 1.3 cycle counter to the first input of the display unit 12. The third output of the reference frequency unit 1 is connected via the first electronic relay 7 to the first miniature of the connection of the electric stopwatch 4, and the third and fourth outputs of the forma, 6 control voltages are connected respectively to the second input of the first electronic relay 7 and through the second electronic relay 8 to the second H1INO connection of the electric stopwatch 4. The output of the setting device 9 time intervals is connected to the third input of the driver 6 of the control voltages, the fifth output of which is connected via the signaling device 14 to the second input of the display unit 12. The second output of the reversing counter 10 is connected via the decoder 11 to the third input of the display unit 12, and the second output of the harmonic signal generator 2 is connected via a power amplifier 3 to the power supply voltage of the electric stopwatch 4.

The reference frequency block 1 contains a quartz 1 oscillator and frequency dividers connected in series with it, and

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five

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five

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five

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five

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five

The first output of the block is formed by voltage with a frequency of 50 Hz; at Bychod-im the pulses of control of the ground relay, at the third output

meander second-counting

impulses. Harmonic driver 2 includes a rectangular-to-triangular converter, a selective filter (50 Hz) and an amplifier with an automatic gain control system to obtain a stabilized amplitude signal. The power amplifier 3 is assembled in a push-pull pattern on radio tubes with a transformer output and has an output power of 100 watts.

A turn-on synchronizer 5 (Fig. 2) comprises an extremator circuit 15, a single pulse formation circuit 16 and a short control pulse shaper 17. The input of the circuit 15 is connected to the output of a harmonic signal generator 2, and the output of the connection is connected to the first input of the circuit. We form 16 a single pulse, the first and second outputs of which are connected to the first and second inputs of a short pulse generator 17. The first output of the former 17, in turn, is connected to the second input of the circuit 16, the second output to the input of the former 6 of the control voltages. The output of the com- mander “Start of driver 6 is connected to the second input of circuit 16. The direct input of the first amplifier 18 of circuit 15 is connected to the output of the driver 2 and through a spreading resistor with an inverse input of the second amplifier 19, whose direct input is connected to a common ladle The inverse input of the first amplifier 18 is connected to the following capacitor 20, and through opposite-parallel: 1-diode connected with its output. The outputs of amplifiers 18 and 19 are connected via scaling resistors to the direct input of amplifier 21, which acts as a limiter.

You. Amplifier amplifier 21 is connected to the input of the matching Schmitt trigger 22 of circuit 16, and the output of trigger 22 is connected to the synchronizing input of trigger 23 and to the first input of the AND-24 element of the former 17. NOT 24 is connected to the direct output of trigger 23, the inverse output of which is connected to the installation input to “About trigger 25, and its synchronization input is connected to the direct output of trigger 26. The installation input to“ 1 trigger 26 is connected to the output of the Start command shaper 6, and the output element AND - NOT 27 shaper 17 short pulses connect with the input of the imaging unit 6 for generating a command to start the reversible counter 10 and electronic relays 7 and 8.

Control voltage generator 6 includes triggers for controlling electric relays 7 and 8, short pulse shapers from the Start, Stop, Reset and Cycle buttons, counter 10 trigger and alarm 14.

The generator of the block 1 stabilized by a quartz resonator generates three frequencies after dividing: 10 Hz - to the reversible counter 10; 50 Hz - to driver 2; 1000 Hz - to the input of the electronic relay 7.

Formation of a harmonic signal

and the output through the HE element 29 is with the input of the pulse amplifier 30, the secondary winding of the pulse transformer of the electronic relay 7 (Fig. 3) contains the -5 input element AND-28, the HE element 29, the pulse amplifier 30, the trinistor 31 and the diode bridge 32. The first input of the NAND unit 28 is connected to the first output of the control voltage generator 6, 10 is made by an active bandpass filter, the second input is connected to the second output of block 1, from a square wave voltage

50 Hz with subsequent stabilization of the output signal at a level of 0.7 V of the effective value. The signal is then fed to the ryo connected to the control electrode of the adjustable amplifier 3 of the power of the trinistor 31, which is included in the diagonal range of adjustment from 0-300 V and

a direct current of the diode bridge 32, the diagonal of the alternating current of which includes the starting electromagnet of the electrosecond 4 being turned on and the source of industrial frequency voltage.

The electronic relay 8 (Fig. 4) contains the element HE 33, the optocoupler 34, the trinistor 35 and the diode bridge 36. The input of the element HE 33 is connected to the second output of the driver

6 control voltages, and the output is js e electric elec- trometer 4. At the same time they have keys to the LED of the optocoupler 34, the photodiode of the control hive arrives at the first input

reversible counter 10 and starts it. The value of the time interval in code 8-4-2-1 comes from the encoder encoder 9 and is recorded by the memory register.

then to electrosecond 4. The same 0.7 V signal from the output of shaper 2 of the harmonic signal is fed to the input of synchronizer 5 on, which generates a signal to shaper 6 according to the maximum of the positive half wave of sinusoidal voltage. When the Start button is pressed, the signal from the driver 6 starts the electronic relay 7 or 8, which is included in the control electron circuit of the trinistor 35, which, in turn, is included in the diagonal of the direct current of the diode bridge 36. In the diagonal of the alternating current the vibrator 3Q information is released on the digital

ical stopwatch 4 and power amplifier output 3.

Unit 9 contains a push-button contact device and an encoder, information from which in code 8-4-2-1 enters the memory register and is stored in it until the end of all calibration cycles until the time interval value changes.

Counter 10 contains five followers35

display unit 12 display. When the reversing counter 10 is started up, the information in the counter begins to decrease, which is indicated by the display unit 12. The counting signal from the counter 10 is fed to the inrush of the driver 6, which produces a disconnect signal from the electronic relay 7 or 8. The stopwatch 4 stops. At the same time, the end-of-count signal arrives at setpoint 9 and overwrites

display unit 12 display. When the reversing counter 10 is started up, the information in the counter begins to decrease, which is indicated by the display unit 12. The counting signal from the counter 10 is fed to the inrush of the driver 6, which produces a disconnect signal from the electronic relay 7 or 8. The stopwatch 4 stops. At the same time, the end-of-count signal arrives at setpoint 9 and overwrites

but included ten-decade time interval counters and five diode arrays for the dO information from the memory register to the reversal of the zero state of all of the counting counter 10, start the light and

cove The synchronization inputs of the time counters are combined and connected to the control trigger of the driver 6. The decoder 11 contains decryptors of the binary-decimal codes according to the number of digital indicators of the display unit 12. The display unit 12 forms digital gas-discharge indicators by the number of digits of the counter and one service alphabetic indicator.

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buzzer 14 end of the calibration cycle. Each trigger signal of the reversible counter 10 is an informative signal for a counter of 13 cycles. The sequence number of the cycle is displayed on the display unit 12.

The signal from the imaging unit 2 is fed to the forward input of the amplifier 18. Due to the feedback formed by the counterframe. The counter of 13 cycles contains 50 volts formed of diodes, the voltage on

The following capacitor 20 differs from the voltage at the output of the amplifier 18 by the magnitude of the direct voltage drop across fir. In the area of extremum potential inputs

“Reset. The detector 14 55 changes its sign, and the output voltage includes the tone generator and amplifier 18 abruptly changes to sign

low-frequency generator interrupting the voltage incident on the diodes.

signal, which is simultaneously the output voltage of the amplifier 18 and the counting pulse input from the turn-on counter control switch signal 10 and a decade counter, the zero input of which is connected to the output of the inverter

controls the indication of the service mark on the display unit 12 12.

The device works as follows.

The generator of the block 1 stabilized by a quartz resonator generates three frequencies after dividing: 10 Hz - to the reversible counter 10; 50 Hz - to driver 2; 1000 Hz - to the input of the electronic relay 7.

Formation of a harmonic signal

 carried out by an active bandpass filter from a voltage meander with a frequency

50 Hz with subsequent stabilization of the output signal at a level of 0.7 V of the effective value. The signal is then fed to a regulated power amplifier 3 with an adjustment range of 0-300 V and

Kundomer 4 at the same time. At the same time, the control hive arrives at the first entrance

then to electrosecond 4. The same 0.7 V signal from the output of shaper 2 of the harmonic signal is fed to the input of synchronizer 5 on, which generates a signal to shaper 6 according to the maximum of the positive half wave of sinusoidal voltage. When you click the Start button, the signal from the driver 6 starts the electronic relay 7 or 8, turn on

display unit 12 display. When the reversing counter 10 is started up, the information in the counter begins to decrease, which is indicated by the display unit 12. The counting signal from the counter 10 is fed to the inrush of the driver 6, which produces a disconnect signal from the electronic relay 7 or 8. The stopwatch 4 stops. At the same time, the end-of-count signal arrives at setpoint 9 and overwrites

information from the memory register to the reversing counter 10, starts the light and

buzzer 14 end of the calibration cycle. Each trigger signal of the reversible counter 10 is an informative signal for a counter of 13 cycles. The sequence number of the cycle is displayed on the display unit 12.

The voltage that is inverted by a scale amplifier 19 is summed and limited by amplifier 21. As a result, positive polarity pulses are received at the output of the amplifier 21, the fronts of which correspond to the positive extremum of the input signal. The resulting square wave is input to the Schmitt matching trigger 22. When the start button is pressed, the signal from the driver 6 is fed to the S input of the control trigger 26. The transition 01 from the direct output of the trigger 26 goes to the synchronization input of the trigger 25 and switches it to one. The first transition 01 at the S-input of the trigger 23 sets it to the state "1, and the trigger 25 is driven by the asynchronous R-BXO to the state" O and keeps it in this state, while the trigger 23 is in the state NII "1. The subsequent transition 01 input signal sets in the state, "O

the arrival of pulses through the IS-NE element 28 and the NOT element 29 at the input of the amplifier 30 is stopped, the trinistor 31 is turned off and the electromagnetic clutch is connected to the stopwatch 4. The electronic relay 8,

 The initial state of which corresponds to a normally closed contact is intended to control the stopwatch 4 with a vibration drive. In the initial state, “1 s inverse trigger output 37

10 of the control circuit of the electronic relays 7 and 8 is fed to the input of the power element HE 33, the output of which includes the LED of the optron 34, the photodiode of which is connected between the anode and the control electrode three. Nistor 35, which, being included in the diagonal of the direct current of the diode bridge 36, shunts it, and the bridge, in turn, shunts the winding of the vibrator of the electric stopwatch 4. When the start button is pressed, the synchronizer impulse 5 turns on

the trigger 23 and through the inverter 21 the trigger 26, 20 overturns the trigger 37 of the control circuit

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those. the single pulse shaping circuit 16 is reset.

The resulting short negative pulse from the output of the AND element - NOT 27 is fed to the second input of the imaging unit 6, which produces a trigger signal for the reversible counter 10. At the same time, the output signal from the synchronizer 5 on is fed to the S input of the trigger 37 and the control circuit of the electronic relays 7 and 8 Formation and control valve 6 control voltages. In the initial state at the direct output of the flip-flop 37 there is “O, and on the inverse -“ 1.

An electronic relay 7, the initial state of which corresponds to a normally open contact, is intended to turn on an electric stopwatch 4 with an electromechanical clutch and a synchronous motor. When you press the Start button, the pulse from the output of the synchronizer 5 turns on trigger 37 and 1 from the direct output goes to one of the inputs of the AND-NOT element 28, at the other input of which there is a 1000 Hz pulse sequence from the second output

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electronic relays 7 and 8 and “0” from its inverse output enter the input element NO 33. The LED of the optocoupler 34 goes out. Photodiode optocoupler dramatically increases its resistance. Trinistor 35 closes and stops shunting the diagonal of the diode bridge 36, and the alternating current begins to flow into the winding of the vibrator of the electric stopwatch 4.

Claims (1)

Invention Formula A device for checking electric stopwatches, containing a block of reference frequencies, a control voltage driver and a decoder, characterized in that, in order to increase the reliability of verification by turning on a stop watch at the maximum amplitude of the alternating supply voltage, two electronic relays are introduced, a reversible counter, on-synchronizer, harmonic driver, power amplifier, display unit, time interval adjuster, cycle counter and alarm, the first output of the support block frequencies block 1. The pulses are passed through the element 45 connected through a harmonic-HE 28 shaper, inverted by the HE element 29 and fed to the input of the pulse amplifier 30. From the secondary winding of the pulse transformer Tp, positive pulses go to the control electrode of the trinistor 31. The tristor opens and shunts the diagonal of the direct current of the diode bridge 32, in this case the starting electromagnet is triggered, the coupling teeth engage with the stopwatch mechanism 4 and the time begins to count. At the end of a predetermined time interval, the signal 6 is generated by the generator 6, which returns the trigger 37 to its initial state. 50 Signal and synchronization switch with the first input of the control voltage generator, the first output of which is connected to the first input of the reversible counter, the second output of the reference frequency block is connected via a reversible counter to the second input of the control voltage driver, the second output of which is connected through a cycle counter to the first input of the display unit, the third output of the reference frequency block 55 is connected via the first electronic relay to the first bus connection of the checked electrical stopwatch, and the third and fourth th outputs formipostuplenie pulses through AND-NO element 28 and the NOT element 29 to the input of amplifier 30 is stopped, the SCR 31 is turned off and disconnects the electromagnetic clutch stsep- Lonn Stopwatch 4. Electronic relay 8 The initial state of which corresponds to a normally closed contact is intended to control the stopwatch 4 with a vibration drive. In the initial state, “1 s inverse trigger output 37 The control circuits of the electronic relays 7 and 8 are fed to the input of the power element HE 33, the output of which includes the LED of the optron 34, the photodiode of which is connected between the anode and the control electrode, three nistor 35, which, being included in the diagonal of the direct current of the diode bridge 36 , shunts it, and the bridge, in turn, shunts the winding of the vibrator of the electric stopwatch 4. When the start button is pressed, the synchronizer impulse 5 turns on electronic relays 7 and 8 and “0” from its inverse output enter the input element NO 33. The LED of the optocoupler 34 goes out. Photodiode optocoupler dramatically increases its resistance. Trinistor 35 closes and stops shunting the diagonal of the diode bridge 36, and the alternating current begins to flow into the winding of the vibrator of the electric stopwatch 4. Invention Formula A device for checking electric stopwatches, containing a block of reference frequencies, a control voltage driver and a decoder, characterized in that, in order to increase the reliability of verification by turning on a stop watch at the maximum amplitude of the alternating supply voltage, two electronic relays are introduced, a reversible counter, on-synchronizer, harmonic driver, power amplifier, display unit, time interval adjuster, cycle counter and alarm, the first output of the support block frequencies connected via harmonic shaper Signal and synchronization switch with the first input of the control voltage generator, the first output of which is connected to the first input of the reversible counter, the second output of the reference frequency block is connected via a reversible counter to the second input of the control voltage driver, the second output of which is connected through a cycle counter to the first input of the display unit, the third output of the reference frequency block 5 is connected via the first electronic relay to the first bus connection of the checked electrical stopwatch, and the third and fourth The first outputs of the control voltage driver are connected respectively to the second input of the first electronic relay and through the second electronic relay to the second bus to connect the tested electric stopwatch, the output of the time interval adjuster is connected to the third input of the control voltage driver, fifth the output of which is connected via 1. ign;;) the lis- tener to the second input of the display unit, the second output of the reversible counter is connected via a decoder to the third one of the display unit, and the second output of the harmonic signal generator is connected to the power of the tested electric stopwatch (rig. g 9 + / 6 + E