SU1261115A1 - Voltage-to-number - Google Patents

Abstract

The invention relates to the field of automation and computing and can be used to connect analog information sources with a digital computing device. In order to increase the accuracy of the converter, a low-frequency pulse generator was introduced into it. Reference voltage levels from the voltage divider outputs are supplied to one group of inputs of the comparators block. The difference between two reference levels is equal to one quantum. The output signal of a low-frequency pulse generator with an amplitude equal to half a quantum is summed with the voltage of the input source, and the sum signal is simultaneously fed to the other inputs of the comparators block. The input voltage in the comparators block is compared at the same time with all reference levels. When the input voltage exceeds half of the next k reference voltage level, the LED indicator block is constantly hot and the LED indicator flashes with the frequency of the low-frequency pulse generator. 1 il. i W o

Description

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The invention relates to automation and computing and can be used to connect analog information sources with a digital computing device.

The purpose of the invention is to improve the accuracy of the converter by reducing the error of discreteness.

The drawing shows a block diagram of the converter.

The converter contains the source

1 input voltage (potentiometer), voltage divider 2, reference voltage source 3, comparators block A, indication block 5, low-frequency generator 6 pulses. Divider

2 the voltage is made in the form of series-connected resistors 7,

Unit 4 is made in the form and in parallel of the included comparators 8. Each element of the display unit 5 contains a series-connected resistor 9 and an LED 10.

The converter works as follows.

in a way.

The reference voltage levels from the outputs of divider 2 are supplied to one group of inputs of the 4 Comparators. The difference between two adjacent Reference Levels is one quantum A. Ts. The output signal of the generator 6 with an amplitude equal to half the quantum is summed with the voltage U g of source 1 , and the sum signal goes simultaneously to the other inputs of block 4. The input voltage Ugj is equalized simultaneously with all reference damages. If the input voltage lif, t "a

152

is within 4U 1 and b, d and (k + 0.5) where K is 0,1,2, ..., (p-1), then K comparators are in the switched on state a (ck) - in the off state, and the LEDs are constantly hot. If the input voltage is within uU (k + 0.5) U gx uUCk + O, TO is constantly on the K diodes, and the K + 1 LED flashes, with the frequency of the generator 6. As a result, in this converter the input voltage the voltage is determined with a discreteness equal to half a quantum uU. For the convenience of a visual reference, the frequency of the generator 6 is selected in the order of 2-3 Hz with a pulse duty cycle equal to two.

Claims (1)

Invention Formula Voltage converter in the code containing the input voltage source, voltage divider, the inputs of which are connected to the reference voltage source, and the outputs - to one group of inputs of the comparators block, respectively, the other inputs of the comparators block are interconnected, and the outputs are connected to the corresponding inputs display unit, that is, so that, in order to increase the accuracy of the converter, a low-frequency pulse generator was introduced into it, one output of which is connected to the input voltage source, and the other the other input of the comparator unit Editor S. Lisin Compiled by A. Smirnov, Tehred I.Popovich Proofreader A. Zimokosov Order 5245/58 Circulation 816 Subscription VshdPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4