SU1288684A1 - Device for control of data input - Google Patents

Abstract

The invention relates to the field of automation and computing. and can be used in control systems of a manipula 1 Ion and industrial robots or machine tools with numerical control. The aim of the invention is to increase the reliability of input data from code sensors when operating on a long line. The purpose of the invention is achieved by using the entered group of triggers 5, comparison element 6, decoder 4, as well as counter 3, the information register 10 is written only after the constant signal from the lower bit of the incoming data is recorded in the group of triggers 5. This indicates the end of the transition process of the forward link data. 1 il. length $ 9 (L 00 00 00

Description

The invention relates to automation and computer technology and can be applied in control systems for manipulating and industrial robots or machine programmable control systems.

The purpose of the invention is to increase the reliability of the input data.

The drawing shows the functional diagram of the device.

The device contains a pulse generator 1, a second element AND 2, a counter 3, a decoder 4, a group of 5 triggers, an element 6 of comparison, a trigger 7, a first element AND 8, an element NOT 9 and a register 10.

The device works as follows

From the output of the generator 1, pulses arrive at the first input of the element 2, where the logical operation is performed AND with the signal arriving at the second input of the element 2 from the output of the element HE 9. The signal from the output of the element 2 comes down to the counting input of the counter 3. In the absence of a signal at the first control-, le of the input of the counter 3, it is set to O and, accordingly, the device does not work. When a signal appears at the first control input of the counter 3, the information from the output of the selected code sensor goes to the information inputs of the register 10. When the signal appears at the second control input, the counter 3 starts, i.e. pulse counting begins. The information about the pulse number in binary code from the output of counter 3 is fed to the input of the decoder 4, where the signal is decrypted. The C-outputs of the decoder group 4 signals are fed to the control inputs of the group 1 trigger and the information input of the lower bit of the register 10 goes to the information inputs of the group 5 triggers. A signal from one of the outputs of the decoder group 4 records the data in the register 10 After the signals from the outputs of the decoder group 4 in the triggers of group 5, the state of the low data bit signal at the input of register 10 should be recorded, and the low bit information signal recorded in the triggers group 5, must be the same, which corresponds to the end of the transition

S

0

five

0 5 0 5

long line data distribution process. The information about the state of the signal recorded in the triggers of group 5 goes from the output to the inputs

Comparison element 6, which, at identical signal levels at the inputs, generates a high level signal at the output for recording in trigger 7 and when the signal from the second output arrives

decoder 4 is written to trigger 7; from the output of which, depending on the state of the recorded signal, a device readiness signal is set, which enters the system control bus. The signal from the second output of the decoder 4 also triggers the element AND 8, and through the element NOT 9 the signal arrives at the second input of the element AND 2 and prohibits, if the state of the signal recorded in the triggers of group 5 is invariable, the arrival of pulses from the generator 1 of pulses through the element And 2 on the counting input of the counter 3.

When the state of the low data bit signal changes during its recording into the group of 5 flip-flops, the matching process is repeated until the same low-bit information signal at the input of register 10 is written to the group of five flip-flops, after which the device generates readiness Ready to control bus;

0

five

system.

For proper operation of the device, it is necessary that the frequency of the pulse generator 1 is more than two orders of magnitude higher than the pulse frequency of the younger information bit of the code sensor.

Claims (1)

Invention Formula A device for controlling data entry, containing a register, a counter, a pulse generator, two AND elements, a trigger, the information inputs of the register are information inputs of the device, the register outputs are information outputs of the device, the trigger output is connected to the first input of the first element. And, characterized in that, in order to improve the reliability of the input data, a decoder, a group of triggers, a comparison element, a NOT element, the output of the pulse generator are connected to the first input of the second element AND whose output is connected to the counting input of the counter whose outputs are connected. To the inputs of the decoder, the reset input of the counter is the first control input of the device, the control input of the counter is the second control input of the device, the information inputs of the group triggers are combined with the information input ode low-order register, the outputs of the group triggers are connected to the inputs of the comparison element, the output of which is connected to the information input of the trigger, the first Editor O.Golovach Order 7809/47 Compiled by I. Karnov Tehred V. Kadar Corrector Circulation b94 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4 5 o 886844 the output of the decoder is connected to the trigger reset input, the outputs of the decoder group are connected to the control inputs of the group triggers, one of the decoder group outputs is connected to the control input of the register, the second output of the decoder is connected to the trigger building INPUT of the trigger and the second input of the first element And, the output of which connected to the input element HE, the output of which is connected to the second input of the second element AND, the output gera is the device output. trig-readiness Proofreader V. But ha