SU1594434A1 - Optronic matrix voltage indicator - Google Patents

Abstract

The invention relates to electrical measuring technology and can be used in measurement and control systems for the two-dimensional display of electrical signals. The purpose of the invention is to expand the scope. The indicator contains an optoelectronic scale 1, N - a discharge control unit 16, a ring counter 7, a generator of 2 pulses, an electronic key 8, AND-NOT elements 5.6. Introduction of the amplitude-time converter 13, time setting unit 11, pulsed voltage unit 10, triggering LED 15, trigger 22, And 12 element and switch 9, as well as performing each of the bits of block 16 on a chain of LEDs 17,18 and photo-thyristor 19 provide the ability to memorize on the optoelectronic scale 1 form of single pulse signals. 2 hp f-ly, 3 ill.

Description

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This invention relates to electrical measuring technology.

The purpose of the invention is to expand the field of application by allowing the form of single pulse signals to be memorized.

FIG. 1 is a functional diagram of an optoelectric electronic voltage indicator; in fig. 2 functional scheme of the optoelectronic scale; in fig. 3 - functional circuit ring meter

The optoelectronic matrix indicator (Fig. 1) of the voltage contains an optoelectronic scale 1, a generator of 2 pulses, the first 3 and second 4 resistors, the first 5 and second 6 I-PE element, ring counter 7, electronic key 8, switch 9, unit 10 pulsating voltage, the control unit of 11 time intervals (GIT), element I 12, amplitude-time converter (WUA) 13, block 14

power supply, the trigger LED 15 and the control unit 16, consisting of N

bits 16, each

of which contains an indicator LED 17, the cathode of which is connected to the anode of the communication LED 18, the cathode of which is connected to the photothyristor anode 19. The anodes of the LEDs 17 are connected through a resistor 3 to the output of the power supply unit 14, the cathodes of phototristors 19 odd bits 16 ,, 16 ,, ..., 16 are connected to the output of the element AND-NOT 5, the cathodes of the photo thyristors 19 even bits 16, 16, ..., are connected to the output of the element AND-NOT 6. I start the LED 15 and the photo thyristor 19 of the first discharge 6, and

The 18 LEDs of all the bits and the photo thyristors of the 19 subsequent bits are optically coupled. Input WUA 13 is connected to the input bus 20, the output of the element And 12 is connected to the counting input 21 of the trigger 22. The first input of the element 12 is connected to the input of the generator 2 and through ZVI 11 to the first inputs of the elements AND-NOT 5 and 6 and the input 23 of the control WUA 13, the output 24 of which is connected to the second input of the element And 12. The second inputs of the elements AND-5 and 6 are connected to the direct and inverse outputs of the trigger 22, respectively. The cathode of the LED 15 is connected to the input 23 of the AVP 13 control and to the installation input of the trigger 22, and the anode is connected via a resistor 4 to the output of the power supply unit 14. Block 10 output

connected to the first fixed contact 25 of the switch 9, the movable contact 26 of which is connected to the power supply input 27 on the scale 1, the first information inputs 28, 28.,,. . , 28., Which are connected respectively to the anodes of the photothyristors 19 of each bit. The output of the block 14 is connected to the second fixed contact 29 of the switch 9 and to the power input 30 of the ring counter 7, the counting input

five

0

five

0

0

five

0

31 of which is connected to the output of ZVI 11, the output 32 of the zero bit of the counter 7 is connected to the control input 33 of the key 8, the first and second terminals of which are connected respectively to the input 34 of zero scale 1 and the common bus. The second information inputs 35., 35-, ..., 35 of the scale 1 are connected to the corresponding outputs 36 of the ring counter 7.

The optoelectronic scale 1 (Fig. 2) contains NxM cells 37,

1.L. 1 .2 5 .ui phototransistors 38, 38 ,. ..,, N

the first LEDs 39,392, ..., fi and M the first limiting resistors 40, 402, the second limiting resistor 41, each cell 37 contains the third limiting resistor 42, the second LED 43, the indicator LED 44 and the photo thyristor 45, optically connected zanyan with LED 43. Resistor 5 42 each cell 37 is connected between

an input 27 of the power supply and an anode of the indicator LED 44, the cathode of which is connected to the anode of the photo thyristor 45, the cathode of which is connected to the zeroing input 34. Each of the M resistors 40 is connected between a respective second information input 35 and the combined cathodes of the LEDs 43 of the cells 37 of the respective column. The resistor 41 is connected between the power input 27 and the combined anodes of the LEDs 39, the cathodes of which are connected to the corresponding first information inputs 28, the collectors of the phototransistors 38 optically connected with the corresponding LEDs 39, are connected to the input 27, the power supply, and the emitter of each The phototransistor 38 is connected to the combined anodes of the LEDs 43 of the corresponding row.

K. ring counter 7 (Fig. 3) contains two keys 46 and 47, the element And 48, the counting trigger 49, the node 50 start

the boundary resistor 51, M + 1 times 52.52,, 522, ..., 52, each of which contains a LED 53 and a photoristor 54, and a zero bit 52 - an additional photo thyristor 55, optically connected to the LED 53 of the last bit yes 52. The combined anodes of the LEDs 53 of all bits 52 are connected via a resistor 51 to the power input 30, the movable contacts of the keys 46 and 47 are connected to the common bus, the fixed contact of the key 46 is connected to the input 56 of the flip-flop setting 49 and the cathode of the LED 57 start node 50, the anode of which is connected through a restrictive a resistor 58 of the startup node 50 to the power input 30. The fixed contact of the key 47 is connected to the second input of the And 48 element, the first input of which is connected to the counting input 31 of counter 7, and the output to the counting input 59 of the flip-flop 49, the direct output of which is connected to the cathodes of the photothyristors 54 of all even-numbered 52jj, 52, j, 52 ,. .., 52. ,, and the inverse output - by the age of photo thyristors 54 of all odd bits 52,, 52,. .., 52, wherein the anodes of the photo thyristors 54 of each bit 52 are connected to the cathodes of the respective LEDs 53 and to the corresponding outputs 36 of the counter 7, an additional photo thyristor 55 of the zero discharge 52 by the cathode and the anode is connected respectively to the cathode and the anode of the photo-thyristor 54 of the zero discharge 52j, optically coupled to the LED 57 of the trigger assembly 50. The LED 53 of each bit 52 is optically coupled to the photo thyristor 54 of the subsequent bit 52.

The device works as follows.

The indicator can operate in two modes: a histogram display of a signal and a point display of a signal.

Consider the histogram display mode of the signal. For this, the second fixed contact 29 and the movable contact 26 of the switch 9 are closed. In the initial state, when the power supply unit 14 is turned on, all the bits 16 are in the zeroed state, since the triggering LED 15 does not emit light, its cathode has a logic level 1 from the ZVI output 11, the generator 2 pulses

9443D

It functions, but its pulses are not fed to the counting input 21 of the flip-flop 22, since And 12 is closed by a low logic level from the output 24 of the WUA 13. The trigger state 22 is arbitrary.

When voltage is applied to the input bar 20 of the indicator, the WUA 13

0 converts the amplitude of a given voltage into a time interval represented as the duration of the presence of logic 1 at its output 24 tolcr only after the arrival of the first stimulation pulse (log.O) from the output of ZVI 11, which acts on the first inputs of the AND-5 elements. and 6, folded the cells 16, onto the setup input of the trigger 22, mounted on its

20 direct output is the level of logic 1, and on the inverse level - the level of log.O, the cathode of the LED 15, exciting it and this optical signal preparing the photothyristor 19 of the first cell 16, to

25 on, on control input 23

WUA 13 (at the cut of this impulse, WUA 13 begins to function, from the output of which a high logic level goes to the first input of the element

30 and 12, which starts to transmit pulses of the generator 2 to the counting input 21 of the flip-flop 22), to the counting input 31 of the ring counter 7, changing its state by one more.

The cut of the QVI pulse 11 also leads to quenching of the LED15, excitation of the photothyristor 19 and electrically connected LEDs 17 and 18, since the photothyristor 19 was prepared by the optical signal of the LED 15 and its cathode received a log level.

AND-NOT 5.

Thus, the negative impulse ZVI 11 establishes a log at the outputs of the AND-NE elements 5 and 6. G, which ensures zeroing of bits 16, triggers the LED 15, sets the trigger 22 to one state at the forward output, excites 50 the first bit 16, and starts the WUA 13.

The first pulse of the generator 2 through the open element And 12 switches the trigger 22 to the zero state, which leads to the inclusion of the photo thyristor 19 and the electrically connected LEDs 17 and 18 of the second cell 16, since it was prepared

40

tic signal of the led 18 of the first cell 16, and its cathode received a logic level.

The photothyristor 19 of the first bit 16 is turned off due to the potential of the potential on its electrodes.

Consequently, the first impulse of the generator 2 leads to the excitation of the LED 18 of the second discharge 16j and damping in the first discharge 16,. ; With the arrival of the Bfoporo pulse, the third bit 16 is energized at the count input 21 of the trigger 22 and the second bit 162- is quenched.

With the arrival of the third impulse, the fourth bit 16 and. Ga - is excited. ; sits third rank; 16.; If, prior to the arrival of the fourth impulse: to the counting input 21 of the trigger 22 from the generator I 2, the output 24 of the FPA 13 is I, the log is O. Then the fourth I bit 16 will be in the excited state, since 12 will prohibit further passage of the pulses from the generator 2 and the trigger 22 will maintain the previous state. Thus, at the end of the time interval at the output of 24 WUAs 13 in bits 16, the input information is memorized.

The appearance of a negative pulse at the output of the SVI 11 zeroes all bits 16, translates the first bit 16 into an excited state,, starts the WUA 13, then with the arrival of pulses at the counting input 21 of the trigger 22, the described processes repeat

The start-up frequency of the WUA 13 is set by dO with the help of ZVI 11, which can be used as a frequency divider with a variable deenergy factor, which generates a sequence of 45 negative impulses from generator 2 pulses, the duration of which is equal to the on-time of one of the AND-5 elements and 6 flip-flops 22. and LED 15 and there should be a sufficient dcd of preparing photo-thyristor 5Q torus 19 to turn on the LEDs 17 and 18, and the pause time is maximum for the maximum time interval displayed by this scale, plus the time for th memorized §5 Infor- mation (if necessary).

The ring counter 7 functions in a unit-position code and counts the pulses from the output of the SVI 11.

From the anodes of the photothyristors-19, the signals arrive at the first information inputs 28 of the optoelectronic scale 1, and | from outputs 36 of the ring counter 7 - to the second information inputs 35

scale 1.

When the first pulse appears at the output of the SIS 11 optoelectronic box 1, the first column displays the input signal as a luminous band present at this time in bits 16, and the luminous band is remembered for a time corresponding to the time of excitation of all bits counter 7.

With the appearance of the second pulse at the output of the SVI 11 in the ring counter 7, a second discharge is excited, and the first is zeroed. The second column of the optoelectronic cabinet 1 will reflect the light strip and be present already at the next moment on the discharge.

With the appearance of the following pulses, the described processes are repeated.

Thus, on the optoelectronic scale 1, the change in input voltage over time is displayed as a graph, i.e. in the most convenient form for a person.

If all the bits of counter 7 are sequentially excited, then when a zero discharge is excited, output 32 will receive a signal arriving at input 33 of key 8, which, in turn, closes and a high potential level appears at input 34 of zero scale 1 nulling scale 1.

With the arrival of the following pulses at the counting input 31 of the counter 7, the described processes are repeated.

In the point mapping mode of the sinal, the first fixed contact 25 and the movable contact 26 of the switch 9 are closed.

The input signal on the optoelectronic scale 1 is not memorized at each discrete time count, since pulsing power is supplied to the power supply input 27 of the scale 1, i.e. not constant, with the pulse repetition rate of the power supply being greater than or equal to 50 Hz.

Thus, at each time point on the scale 1, the light will move with a point, which describes graphically the nature of the change in the input voltage, and the cost of consumption

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In this case, the required power will be minimal.

Consider the operation of the optoelectronic scale 1 (Fig. 2). At the initial moment of time, a supply voltage is present at the input 27, and a zero potential is present at the zero-reset input 34.

Suppose that at the ith first informational input 28, (where i 1, N) there is a low positive potential, and the others have a high potential. Therefore, the LED 39 emits light, since the power input 27 through the resistor 41 and the LED 39j to the information input 28. flows

current.

From the entrance 28. through the corresponding direct photothyristor 19 (Fig. 1) to the output of one of the elements AND NOT 5, 6 will be

leak current./n

The phototransistor 38 of the scale 1 (Fig. 2) is unlocked. If there is a low positive potential at the i-th information input 35j (where j 1, M), then it goes through the resistor 40 y to the cathodes of the LEDs 43 of the cells 37 of the j-ro column.

A current flow circuit from power input 27 is created through a collector-emitter i-ro phototransistor 38, LED 43 of cell 37, and resistor 40.- to information input.

1H LED 43 cells 37, - emits light to the photo thyristor 45, thereby translating it into a conducting state. The indicating LED 44 emits

shine.

Thus, the excited cells 37 will be those whose indices i and j correspond to the indices of information inputs 28 and 35, on which there are low positive potentials that create conditions for the excitation of the corresponding cells 37

In order to zero all the cells of the scale at the zero input 34, a high level of positive potential is applied, equalizing the potentials on the electrodes of the photo thyristors 45 of all cells 37.

If alternating voltage is applied to the power input 27, the cells 37 on the scale 1 will be excited only for the duration of the presence of the supply voltage pulse, i.e. there will be no permanent memorization by each cell 37 of the excited state.

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Consider the operation of the ring counter 7 (Fig. 3).

At the initial moment of time at the input 30 of the power supply voltage is present, the key 47 is open. To set the counter 7 to the initial state, the key 46 closes, the trigger 49 is set to the zero state, since a log is present on its fixed input 56. Oh i at the direct output of the trigger 49 there are log.0 and in the inverse log. H. A current will flow through the resistor 58 to the LED 57 of the start-up node 50. LED 57 will be on. A zero-discharge photothyristor 54 will switch to the conducting state, since its potential is at a zero potential. After that, the first key 46 opens. The pulses from the counting input 31 through the element And 48 are fed to the counting input 59 of the trigger 49, thereby switching it.

With the arrival of the first pulse, the first bit 51 is excited due to the presence of an optical signal from the zero-discharge LED 53 53 on its photo-thyristor 54, and also a log on the photo-thyristor 54 of the first bit 52. O. Zero bit 52 is zeroed out, as the log 1 appears on the cathode of its photothyristor 54. 35 With the arrival of the second pulse, the second bit 522 is energized and the first bit 52 is zeroed, and so on.

At the moment when the last bit 52 is excited, and with the arrival of the next pulse, the zero bit 52 is excited due to the optical connection from the last bit 52i LED 53 to the additional photoyristor 55 of the zero bit 52 ,, and the last 45 bit 52 has cleared.

In order to fix the state of the counter 7 after a certain number of pulses (i.e., no longer skip the pulses to the counting input 59 of the flip-flop 49), close the key 47, and open it at the right moment.

Claims (3)

1. An optoelectronic matrix voltage indicator containing an optoelectronic scale, the N first information inputs of which are connected to the corresponding N-bit outputs 1 YuGO control unit, and M second information inputs - to the corresponding outputs of an M-bit ring counter, a pulse generator, an electronic key, two I-NOT elements and two resistors that differ in he entered the amplitude-time-converter, adatchik time intervals, block ten The pulsating voltage, starting up | | (LED, trigger, element AND switch, each of 1) of the control unit arrays is executed on the chain according to the included LED: photodiode, LED and photo diode, LED each discharge is optically connected with a photothyristor of the subsequent generation, the first-generation photo thyristor is optically connected with a start-up light, connected in series- $ 10 with a second resistor between the output $ of the time slot sensor and the power supply, free indication indications These LEDs of all bits are combined and connected to the power supply unit through the first resistor, the free terminals of odd bits photo thyristors are connected to the output of the first NAND cell, free photo thyristors of even bits are connected to the output of the second AND cell, the connection outputs of the communication LED and the photothyristor of each bit are outputs of the control unit, the input of the amplitude-time converter is connected to the input bus of the device, the control input is connected to the output of the time interval detector counting in the course of the ring counter, the setup input of the trigger and the first .inputs of the NAND elements, and the output - with the second input of the element I, the first input of which is connected to the output of the pulse generator and the input of the setpoint generator, and the output to the counting input of the trigger, the direct and inverse outputs of the trigger are connected to the second inputs of the first and second elements AND –NE, respectively, the output of zero bit a ring counter is connected to a control input of an electronic key connected between, an optoelectron scale zeroing input and a common bus; a movable contact of the switch is connected to the power input of an optoelectronic scale, the first 15 1594434 2 the fixed contact is with the output of the pulsating voltage unit, and the second fixed contact is with the power supply unit. 2. The indicator according to claim 1, characterized in that the optoelectronic scale contains Ni M cells, N phototransistors, N first LEDs and M first limiting resistors and a second limiting resistor, each cell containing a third limiting resistor, a second LED indicator light. a diode and a photothyristor, optically connected to the second LED, the third limiting resistor of each cell is connected between the power input and the anode of the indicator LED, the cathode of which is connected to the anode of the photothyristor, the cathode of which Wow is connected to the input of the zeroing of the optoelectronic scale, each of the M first restrictive pe-. connected between the corresponding second information input of the optoelectronic scale and the combined cathodes of the second LEDs of the corresponding column, the second limiting resistor is connected between the power input and the combined anodes of the first LEDs whose cathodes are connected to the corresponding first information inputs of the optoelectronic scale, phototransistor collectors optically connected with the corresponding the first LEDs are connected to the power input, and 20, 25 thirty 35 40 45 50 55 the emitter of each phototransistor is connected to the combined anodes of the second LEDs cells corresponding. Row. 3. The indicator according to claim 1, characterized in that the ring counter contains two I key elements, a trigger, a trigger node, a limiting resistor (M + 1) bits, each of which contains an LED and a photo thyristor, and a zero bit and an additional a photothyristor optically connected to the last bit LED, the combined anodes of the LEDs of all bits are connected via a limiting resistor to the power input, the moving contacts of the keys are connected to the common bus, the fixed contact of the first key is connected to the trigger setup input to hil state and to node cathode cathode 0 five 0 five the emitter of each phototransistor is connected to the combined anodes of the second LEDs cells corresponding. Row. 3. The indicator according to claim 1, characterized in that the ring counter contains two I key elements, a trigger, a trigger node, a limiting resistor (M + 1) bits, each of which contains an LED and a photo thyristor, and a zero bit and an additional a photothyristor optically connected to the last bit LED, the combined anodes of the LEDs of all bits are connected via a limiting resistor to the power input, the moving contacts of the keys are connected to the common bus, the fixed contact of the first key is connected to the trigger setup input to hil state and to node cathode cathode the start, the anode of which is connected through the limiting resistor of the start node to the power input, the fixed contact of the second key is connected to the second input of the element I, the first input of which is connected to the counting input of the ring counter, and the output to the counting input of the trigger, the direct output of which is connected to the cathodes the photothyristors of all even bits, and the inverse output to the cathodes of the photo thyristors of all odd bits, and the anodes the photothyristors of the bits are connected to the cathodes of the corresponding LEDs and the corresponding outputs of the ring counter; an additional photothyristor of zero discharge by the cathode and anode is connected respectively to the cathode and anode of the main photothyristor of zero triggering node, and the LED of each bit is optically connected with the photothyristor of the subsequent discharge. Fig.Z