SU434402A1 - DEVICE FOR INPUT OF INFORMATION - Google Patents

Description

one

The invention is intended for use in operational control systems for obtaining primary operational and production information from workplaces, as well as in automation and telemechanics systems, in systems for transferring production information from drag to mine, to a combine.

A device for inputting information is known, comprising a decade switch connected to a direct code encoder that is connected to triggers. However, such a device has insufficient reliability due to the fact that the voltage on the electrodes of the indicators of the display device is supplied from matrix decoders built on high-voltage diodes; for the operation of the indicators, a special high-voltage power source is necessary, the control of the input of each digit is made by visual comparison of the switch position with the indication of a digital indicator; the control node does not generate an electrical signal for correct input.

In order to increase the reliability of the device in operation, the proposed device contains an inverse code encoder and a series-connected AND circuit, an OR circuit, an amplifier and a display element, with the inertial code encoder connected to triggers, decade and one of

circuits And, the other inputs of which are connected to the triggers.

The drawing shows a functional diagram of the proposed device. It contains an input button 1, decade switch 2, direct code scheme OR 3, code of the inverse code OR 4 encoder of the inverse code, triggers 5, schemes AND 6, scheme OR 7, amplifier 8 and display element 9.

In the initial state, the input circuit of the ten-day switch 2 is open, the zero potential to the OR 3 p 4 circuit is not applied, the state of the flip-flops 5 is arbitrary. The inputs of circuits AND 6 from each trigger 5 receives a negative potential, which from the output of the circuit AND 6 passes through the circuit OR 7 to the input of the amplifier 8. The display element 9 does not light up.

The device works as follows.

After setting the decade switch 2 to the desired position, the input button 1 is pressed. Zero potential through input button and decade switch 2 is applied

to all the OR 3 and 4 schemes connected to the selected input bus of the encoders of the direct and inverse codes. If a zero potential is applied to the OR circuit, 3 the trigger 5 is set to the state "1, when applied to

circuit OR 4 - state "O.

Forced installation of all triggers

5Excludes the need to pre-reset the triggers.

If from trigger 5 to one input of AND circuit

6 If the potential is negative, then the bullet potential from the output of the circuit OR 3 or 4 arrives at the other input of the circuit AND 6.

If from the flip-flop 5 to the input of the AND 6 circuit the zero potential (close to zero), then the input potential of the circuit OR 3 or 4 is not supplied to the other input of the circuit AND 6. From the output of all circuits AND 6 to the inputs of the circuit OR 7, zero zero potentials (close to zero) arrive. Zero potential output circuit OR

7 is input to the amplifier 8, causing the display element 9 to light up. After releasing the input button, the triggers 5 remain in a predetermined state, and the display element goes out.

The output voltage of amplifier 8 applied to the display element can be used as a signal for correct input for acting on other devices.

Subject invention

An information input device comprising a decade switch connected to a direct code encoder that is connected to triggers, characterized in that, in order to increase its reliability in operation, it comprises an inverse code encoder and serially connected circuits And,

the OR circuit, the amplifier and the display element, the inverse code encoder is connected to the triggers, the decade switch and one of the inputs of the AND circuits, the other inputs of which are connected to the triggers.