UA64042A1 - Device for visual control of the electrical quantity value - Google Patents

Abstract

DEVICE FOR VISUAL CONTROL OF THE ELECTRICAL QUANTITY VALUE, containing the input analog code converter the first input of which serves as the first device's input, commutators' unit, controlling input of which is connected to the first output of clock generator, and the output is connected to the first input of analog-to-digital indicator, differing by the fact that, for purpose of increase of precision of operative visual tolerance control of the coded signal, the first additional code converter is introduced to it, and its output is connected to the second input of analog-to-digital indicator, and the first input - to the second output of clock generator; the second additional code converter, the output of which is connected to the first commutators' unit signal input, the first summarizing unit, the output of which is connected to the second input of the first additional code converter, and the first input - to the first output of the output code converter, the second summarizing unit, which output is connected to the output of second additional code converter, and to the second signal input of commutators unit; the first input is the second device's input, and the second input is connected to the second output of the input code converter, and the parity control unit, its output is connected to the second input of the first additional code converter, and the input serves as the third device input and is connected to the second input of the input code converter.

Description

summation 2. The input of the summation unit 5 is connected to the first signal input of the switch unit 7 and the input of the additional code converter 6, the output of which is connected to the second signal input of the switch unit 7, the output of which is connected to the first input of DAY 4, the second input of which is connected to the OUTPUT of the code converter 3. At the same time, the first and second outputs of the input converter of code 1 form a bus! with an even specific gravity.

The device works as follows.

A binary code, for example, a code of a seven-segment digital indicator containing information about 2/2 decimal digits of the number to be displayed, is received at the input. The code of the lower decimal digit is processed by the input converter of code 1, the code of the middle digit is processed by the converter of code 1 and the parity check block 8, and the code of the incomplete higher digit is processed by the summation block 5. At the output of the converter of code 1, a single code is formed, in which the number of representations! by the number of signs "1" of the number of the smallest digit, which enters the summation block 2, and the single code of the number of the middle digit, entering the summation block 5. At the output of the parity control block 8, a single potential is set at an odd number in the middle decimal digit of the input code. The summation block 5 is composed of codes of middle decimal digits, according to . coming from the second output of the code 1 converter, and the number of the highest decimal place with the corresponding specific weight. At the input of the summation block 5, a unit code sum! is formed, which is fed to the input of the b-code converter and to the second signal input of the switch block 7. At the output of the converter 6, a unit positional code is formed, in which the number is represented by the position of the sign "1" in the row of signs "0 " the sum that comes to the first signal input of the switch block 7. The summation block 2 consists of the number of the smallest decimal digit, coming from the first input of the code converter 1, and the number from the output of the parity control block 8 with the corresponding specific weight. From the output of the summation block 2 summation code! goes to the second input of code converter 3. "--

A single code of sums is formed at the exit! at a zero logic level coming from the clock generator 9, and the unit code of the maximum number of lower digits, if a logic "1" is supplied from the clock generator 9. In addition, momentum! clock generator 9, having a duty cycle of two are supplied to the control input of the switch block 7. The excitation of DAI 4 occurs in accordance with the codes at the output of the code converter Z and the switch block 7 in two cycles. During the first cycle, with a logic "1" at the output of the clock generator 9, all the high-order digits of the GIVE 4 from among those participating in the indication are excited. During that cycle from the input of the code converter Z on the bus of lower levels -

GIVE 4 the unit code of the maximum number of lower digits is fed, and from the output of the switch block 7 to the bus of the higher digits GIVE 4 the unit code of the sum entering the first signal input! of block 7. During the second cycle at logic "0" at the output of the clock generator 9, the element of one - incomplete senior digit, DAY 4, from among those participating in the indication, is excited. During this cycle, the unit code of the number formed by the first block of summation 2 is fed from the output of the code converter Z to the buses of the lower digits, DAY 4, and from the output of the switch block 7 on the bus of the higher bits, DAY 4 is the single positional code of the sum received at the second signal input of block 7. The frequency of the clock pulses is selected above the critical frequency! the merger is slow, so the operator observes on DAY 4 a glowing line, the length of which is proportional to the number whose code is fed to the input of the device.

Co.)

R

Claims (1)

The formula of the invention is a device for visual control of the value of an electrical quantity, containing an input code converter, the first input of which is the first input of the device, a block of switches, the control input of which is connected to the first output of a clock generator, and the output is connected to the first input of a discrete-analog indicator, characterized by что, in order to increase the accuracy of operational 70 visual tolerance control of the coded signal, input into it! the first additional code converter, the input of which is connected to the second input of the discrete-analog indicator, and the first input - to the second output of the clock generator, the second additional code converter, the output of which is connected to the first signal input of the switch block, the first summing block, the output of which is connected with the second input of the first additional code converter, and the first input - with the first INPUT of the input code converter, the second summing block, the input of which is connected to the input of the second additional code converter and the second signal input of the switch block, the first input is the second input of the device, and the second input is connected to the second INPUT of the input converter of the code, and the parity control block, the input of which is connected to the second input of the first additional converter of the code, and the input is the third input of the device and is connected to the second input of the input converter of the code. "- " s "I (av) "I (Se) - a Ge) s» (av) s» more) shk 60 65