SU1201828A1 - Device for input of information from two-position transducers - Google Patents

Abstract

A DEVICE FOR INPUT OF INFORMATION FROM TWO-POSITIONAL SENSORS, containing three matching blocks, a pulse generator, an address counter and a switch, the information inputs of which are connected through the load resistors to the device’s power supply voltage and connected to the outputs of two-position ion sensors, and the first, second and second outputs the third matching blocks are respectively information, gating and start outputs of the device, the output of the pulse generator is connected to the counting input of the address counter, the output to This is connected to its installation input and to the control input of the switch, characterized in that, in order to reduce the equipment of the device, a pulse driver, a delay element, two triggers, two NOT elements and an NAND element, the output of which is connected to input — the second matching unit, and the inputs of the NAND element are connected respectively to the outputs of the first trigger and the first element, the output of the first element is NOT connected to the first installation input of the second trigger, the second installation input of which is connected to the output of the delay element, the output of the second trigger is connected to the input of the first matching unit, the switch output is connected to the first installation input of the first trigger and the input of the pulse generator, the output of which is connected to the input of the delay element, the output of the pulse generator is connected to the second installation input of the first trigger and input the first element is NOT, and the input and output of the second element are NOT connected respectively to the output of the address counter and the input of the third matching unit.

Description

The invention relates to digital computing, in particular, for transferring data from two-position sensors to control computers and can be used in the technical diagnostics systems of the main technological equipment of rolling mills.

The purpose of the invention is to reduce the device equipment.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - time diagram of his work.

The device contains a switch 1, a pulse shaper 2, a delay element 3, triggers 4 and 5, an AND-6 element 6, a pulse generator 7, elements HE 8 and 9, an address counter 10, matching blocks 11-13, load resistors 14 connected to 15 sensor outputs, information output 16, gate output 17, trigger output 18.

The device works as follows.

In the initial state, the address counter 10 with the frequency of the pulses of the generator 7 sequentially changes the code combination at the control outputs of the switch 1 and sequentially connects its outputs to the input. Switching pulses, which are fixed by the first trigger 4, for the reset signal to arrive from the generator / lpppppppppppppp,

DP P P P P P P P g,

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There are 7 pulses, the start input of the second trigger 5 is not received due to the presence of the element 3 delay. From the output of the first trigger 4, the pulses arrive at the first input of the element AND-NOT 6 and, when coinciding with the pulses received at the second input of the element AND-NOT 6 from the generator, the signals arrive through the matching unit 12 to the gate output 17 of the device, signaling the normal operation of the computing machine switch and the moment of connecting the next information output of 15 sensors. The impulses signaling the need to start the computational mask due to the beginning of the device polling cycle are generated at the device output 18.

The changes in the state of the sensors are recorded by the second trigger 5 and through the matching unit 11 they enter the computing machine.

The time diagram of the device is considered (Fig. 2) for the case of connecting eight sensors and the presence of logic zero signals at 3, 5 and 6 inputs of the device, where 19 is the output of the generator 7 pulses, 20-22 to the outputs of the address counter 10, 23 is the output of the inverter 9, (device output 18), 24 is the output of switch 1, 25 is the output of the first trigger 4, 26 is the output of the second trigger 5, 27 is the output of the AND-HE element 6.

Claims (1)

. A DEVICE FOR INPUT INFORMATION FROM TWO-POSITION SENSORS, containing three matching units, a pulse generator, an address counter and a switch, the information inputs of which are connected via load resistors to the power supply voltage of the device and are connected to the outputs of the on-off sensors, and the outputs of the first, second and third matching units are respectively information, gating and starting outputs of the device, the output of the pulse generator is connected to the counting input of the address counter, the output of which connected to its installation input and to the control input of the switch, characterized in that, in order to reduce the equipment of the device, it includes: a pulse shaper, a delay element, two triggers, two elements NOT and an AND element NOT, the output of which is connected to the input the second matching unit, and the inputs of the AND element are NOT connected respectively to the outputs of the first trigger and the first element NOT, the output of the first element is NOT connected to the first installation input of the second trigger, the second installation input of which is connected to the output, delay element, the output of the second trigger is connected to the input of the first matching unit, the output of the switch is connected § to the first installation input of the first ~ trigger and the input of the pulse former, the output of which is connected to the input of the delay element, the output of the pulse generator is connected to the second installation input of the first trigger and the input of the first element NOT, and the input and output of the second element are NOT connected respectively to the output of the address counter and the input of the third matching unit.