SU1517127A1 - Device for output for indication of data from electronic counters - Google Patents

Abstract

The invention relates to the interface of electronic meters and indicator devices and can be used in electronic devices for various purposes where it is necessary to output information from many meters to one indicator module (board). The purpose of the invention is to expand the functionality by providing readings from several counters. The device contains electronic counters of electrical impulses connected to the corresponding terminals, a power supply unit connected to the common bus and to the supply voltage supply terminal, switches, decoders and an indicator. Additionally, a register, reversible counter, whose capacity is equal to the counter capacity, generator, first logic element (3I-NOT), trigger, first and second waiting multivibrators, second logic element (2I), first and second capacitors, first, second and third resistors . 2 Il.

Description

The invention relates to the interface of electronic meters and indicator devices and can be used in various electronic devices for purposes where it is necessary to output information from many meters to one indicator module (board).

The purpose of the invention is to expand the functional possibilities by ensuring the reading of information from several counters.

FIG. 1 shows a block diagram of a device for outputting information on display in electronic counters of electric pulses; figure 2 - temporal plot of the signals at the corresponding points of the scheme (in figure 1 these points are alphabetic marked).

The device consists of the generator 1, the first logic element ЗЙ-НЕ 2, the RS-flip-flop 3, the first 4 and the second 5 are waiting for mx multivibrators, the second logic element 2И6, pen h

7 and the second 8 capacitors, the first 9, the second 10 and the third 11 resistors, switch 12, reversible counter 13, register 1 A, decoder 15, indicator 16, p (in Fig. 1 - 2) electric pulse counters 17, imitation the contents of which should be displayed, terminals 8, to which the counting inputs of counters 17 are connected, terminals 19 to which the overflow outputs of said counters 17 and supply voltage terminals 20 from the power supply unit 21 are connected.

Figures 1a, 1 power distribution to the generator, logic devices, logic elements, counters, register, reversing the py counter and ipd1: the controller is not.

The first input of the first logical a-control ZI-NO 2 is connected to the output of the generator 1, the second input: the first locomotive of the first element 2 is connected to the output of the RS flip-flop 3, the third input of the first logical element ZI-HE 2 is connected to the inverse output of the first) 1 (double multivibrator 4, the output of the first logic element 3II-HE 2 is connected to the subtractive input of the reversible counter 13 and via the relay: 1 closed contacts of the first contact groups of the switch 12 are connected to the counting outputs of the counters 17, the same counting inputs of the counters 17 through a normally closed Peripheral contacts of the first groups of contacts of switch 12 are connected to terminals 18 for supplying counting pulses to the corresponding counter 17, the inverse input of the first waiting MynTjTnBn6paTopa 4 through normally open contacts of the second groups of KOHTakTOB switch 12 is connected by f. 17, Common pin through serially connected normally closed - contacts of the third groups of contacts of the switch 12 is connected to the first and:; ode the second logic element 2I 6, we The input of the second standby multivibrator 5 and through the third resistor 11 is connected to the terminal 20 for supply voltage. The input R RR of the trigger 3 is connected to the output of the second logic element 2I 6, the input S of the NC-flip-flop 3 through the first capacitor 7 soy / tip with a direct output

five

0

five

0

five

0

five

0

five

The second standby multivibrator 5 and through the second resistor 10 is connected to the supply voltage supply terminal. The direct output of the first standby multivibrator 4 is connected to the register write enable input 14. The second input of the second logic element 2И 6 is connected via the second capacitor 8 to the reverse transfer output of the reversible counter 13 and through the first resistor 9 with the power supply terminal 20 from the power supply unit 21. The information outputs of the reversible counter 13 are connected to the information inputs of the register 14, the information outputs of the register 14 through the decoder 15 are connected to the indicator 16.

The device works as follows.

In the initial state, all buttons 12 of the switch are pressed and counting pulses through the normally closed contacts of the first groups of contacts of switch 12 arrive at the counting inputs of the corresponding counters 17 from terminals 18. If necessary, display the information recorded in one of the counters 17, you must press the switch button 12 corresponding to this counter. In this case, the counting input of this counter 17 is disconnected from the terminal 18 intended for supplying the counting pulses, and connected to the output of the first logic element ZI-HE 2, the second group of contacts of the switch 12 will connect the overflow output of this counter 17 to the inverse input of the waiting multivibrator 4, the third group contacts of switch 12 are opened, and a logical unit will be set at the direct input of the second. waiting multivibrator 5 and the first input of the second logical Element 2 and 6. The second waiting multivibrator 5 will form nd. its forward output and 1 pulse, the falling edge of which RS-flip-flop 3 is set to one state. Logical units from the direct output of the RS flip-flop 3 and the inverse output of the first standby multivibrator 4 allow the passage of the pulses of the generator 1 to the inputs of the reverse C4eT4HKail7, from which information is read, At the moment of overflow of this counter 17, the negative voltage drop

51

from the overflow output of the counter 17 enters the inverse input of the first standby multivibrator 4. First 11 the waiting multivibrator 4 at its inverse output will generate a pulse prohibiting the passage of the pulses of the generator 1 through the first logical element ZI NOT 2. In this case, the reverse counter 13 has the information that needs to be output on the indicator. The impulse from the direct output of the first standby multivibrator A allows the recording of information from counter 13 to register 14. Information from register 14 through the decoder 15 is fed to indicator 16. On the trailing edge of the pulse generated by the first waiters, the multivibrator 4 on the inverse output is again allowed to pass generator 1 pulses through the first logical element ZI-NOT. In this case, the information recorded in the reversible counter 13 is rewritten back into the counter of 17 pulses from which it was withdrawn, and the reversible counter 13 has embraced it mc The reverse transfer impulse from the output of the reversible counter 13 through the differential circuit consisting of the second capacitor 8 and the first resistor 9 is fed to the second input of the second logic element 2I 6, which causes the RS-flip-flop 3 to be reset. In this case, the passage of the pulses of the generator 1 through the first logical element ZI-NO is prohibited. The device has returned to its original state.

The next time you turn on one of the buttons 12, the entire cycle of operation of the device will repeat.

Thus, the whole cycle of work is divided into two stages, in the first of which information is rewritten from counter 17 to reversible counter 13, and the second restores the original information to counter 1 7 and zeroes reversible counter 13 and implements the following algorithm: in the first stage cycle on the subtractive input of the reversible counter 13 will go to pulses, and

In Q - L,,

where Q is the capacity of the counter;

BUT; - the information content of the i-ro counter 17.

71

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Taking into account that the pulses arrive at the subtracting input of the reversible counter, the information content of this counter Cj will be equal to

WITH; Q - B

Substituting in this ratio R from the previous one, we get

ten

Cj O - (Q - L;),

those.

WITH; BUT;

Thus, at the first stage, the information content of the counter 17 was copied to the reversible counter 13 and can be displayed. At the second stage of the cycle, the information content of the i-ro counter 17 is restored and the reversing counter 13 is zeroed by reaching the reversible counter of pulses until it overflows. It is clear that when the capacity of the reversible counter 13 is equal to Q and if it contains informational content equal to A and its pulses are fed to the subtracting input, this counter can be zeroed by the number of pulses equal to A; Since the same number of pulses will be applied to the counting input of the i-counter 17, the resetting of the reversing counter 13 in this counter 17 will restore the previous (original) information content.

Claims (1)

Invention Formula 40 0 five The device of the DPP output on the display of information from electronic meters, each of which is connected to the corresponding terminal containing the power supply unit, one terminal, which is connected to the common bus, and the other to the supply voltage terminal, switches , decoders and indicator, which differs from the fact that, in order to extend the functionality by providing information from several counters, a register is added to the device, a subtracting counter, the capacity of which is Wow is equal to the capacity of the counters, the generator, the first logic element ZI-NES, the RS-flip-flop, the first and second waiting multivibrators, the second logic element 2I, the first and second capacitors, the first. the second and third resistors, and the switches contain three switching contacts to each electronic counter, information from which is displayed, the first input of the first logic element ZI-NE is connected to the generator output, the second input of the first logic element ZI-HR is connected to the direct output RS-trigger, the third input of the first logical element ZI-NOT is connected to the inverse output of the first waiting multivibr-. torus, the output of the first logical element ZI-NOT connected to the subtractive,. the input of the subtracting counter and through the normally open contacts of the first contact groups of the switch. l is connected to the counting inputs of electronic meters, these same counting inputs through the normally closed contacts of the first contact groups of the switch are connected to the terminals for supplying the counting pulses to the corresponding electronic counter, the inverse input of the first waiting multivibrator through normally open contacts of the second switch groups is connected to the terminals for connecting the overflow output of the corresponding elec t- ten five jQ 25 jq the common meter, the common bus through the normally closed contacts of the third groups of switch contacts, which are connected in series, is connected to the first input of the second logic element 2I, the front input of the first waiting multivibrator, and through the third resistor is connected to the supply terminal of the supply voltage, the input R RS-flip-flop is connected to the output of logic element 2, the input S of the RS-flip-flop through the first capacitor is connected to the direct output of the second stand-by multivibrator and through the second resistor is connected to the supply terminal its voltage, the direct output of the first standby multivibrator is connected to the register recording enable input, the second input of the second logic element 2I is connected via the second capacitor to the transfer output of the subtracting counter and connected to the supply voltage terminal through the first resistor; information inputs of the register, and information outputs of the register through the decoder connected to the indicator. lshi at P Well Editor G. Görber Compiled by O, Skvortsov Tehred L. Oliynyk Order 6400/56 Circulation 884 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and publishing complex Patent, t. Uzhgorod, st. Gagarin, 101 Fe / e.2 Corrector 3, Lonchacon Subscription