SU1172085A1 - Device for polling information transdicers - Google Patents

Abstract

INFORMATION SENSOR POLLER, containing clock generator, switching units, control inputs of which are connected to information sensors, serially connected comparison unit and first pulse shaper, serial memory register and adder, outputs of which are connected with the first inputs of the comparison unit, the second inputs of which are connected to the outputs of the information processing time metering unit, the program matrix and the counter A circuit whose outputs are connected to information inputs of switching units and address inputs of a program matrix, whose outputs are connected to second inputs of an adder, characterized in that, in order to reduce the time of interrogation of information sensors, a micro-command counter, sequentially connected multiplexer, trigger, are entered into it the second pulse shaper and the delay unit. the series-connected element NOT and the first element AND, the output of which is connected to the enable inputs of the state counter and the first memory register, the serially connected memory block, the second element AND and the OR element, the output of which is connected to the trigger and status counter inputs the connected second memory register, the sensor number counter, the decoder, the third pulse generator and the fourth pulse driver, the output of which is connected to the enable input of the second memory register, than the counting input of the sensor count of the sensors is connected to the output of the first pulse driver and the second input of the OR element, the third input of which is connected to the input of the fourth pulse driver and the recording input of the memory block, the recording input of which is connected to the output of the delay block, which input is connected with the second inputs of the first and second elements AND, the address inputs of the memory block connect. The information output of the status counter, the information outputs of the microinstruction counter and the address inputs of the multiplexer, the information outputs of which are connected to the outputs of the information sensors, the output of the clock generator, is connected to the counting input of the microoperations counter, the transfer output of which is connected to the information processing time block.

Description

The invention relates to automation and computing, in particular to devices for interrogating telemetry sensors with a variable interrogation rate and a duration of processing information retrieved from them.

The purpose of the invention is to reduce the time taken to poll information sensors.

The drawing shows a structural electrical circuit of the device for interrogating information sensors,

The device contains a clock pulse generator 1, a micro-command counter 2, an information processing time metering unit 3, a first memory register 4, a comparison unit 5, an adder 6, a pulse generator 7, a second memory register 8 software matrix 9, a sensor 10 number of multiplexer sensors 11, trigger 12, second pulse shaper 13, delay block 14, memory block 15, NOT element 16, AND element 17, state counter 18, decoder 19, second AND element 20, OR element 21, third pulse shaper 22, fourth shaper 23 pulses, blocks 24 comm tation, information sensors 25, 1

5, the polling station for the information sensors operates as follows.

When the device is turned on by the initial setup signal, the counter 10 is set to the zero state, which is decrypted by the decoder 19, as a result of which the third pulse generator 22 generates a pulse, with which the block 15 is zeroed and the trigger 12 is set to the initial state OR 21. and counter 18. In this (zero) state, counter 18 prohibits the connection of information sensors 25 to a common bus. The pulse duration is chosen so that during this time counter 2 has managed to interrogate and write O into all cells of block 15. Back edge of the pulse of the third pulse generator 22 starts the fourth pulse former 23 which generates a pulse allowing the transfer of the number code of information sensors 25 stored in the second register 8 memories, in counter 10.

With the help of counter 2 and multiplexer 11, information sensors 25 are sequentially polled with a high frequency, block 15 is polled with the same frequency. When a signal appears at one of the information sensors 25, a signal appears at the output of multiplexer 1 1, which flips the trigger 12, and the second pulse generator 13, forming a single pulse, with the help of which 1 is recorded in a certain cell of block 15 through block 14. Since writing to block 15 is delayed, at the time of connecting the information dates At block 25, a zero signal is generated at the output of block 15, which is inverted by the element NOT 16 and when it coincides with the pulse of the second driver 13 pulses arriving at the second input of element 17, a signal appears at its output that permits the recording of the microaddress of the information sensor 25 into counter 18 At the same time, this signal enables the writing of a number characterizing Step 1; its state of block 3 to the first register 4, Counter 18 connects information sensor 25 through switching block 24, which is a decoder of the state of counter 18, to the common bus and interrogating t software matrix 9, which supplies the processing time code of this information sensor 25 to the inputs of the adder 6. The latter adds this number to the number written in the first register 4. The input of the adder 6 is connected to the input of block 5, When during operation of block 3 (representing a constantly running timer) is a number equal to the number at the output of the adder 6, the same numbers on both inputs of block 5, as a result of which block 5 is activated and the first driver 7 pulses out a pulse igger 12 and 18 COUNT to its original state to permit the survey sensor 25 the new information.

At the same time, the pulse of the first pulse generator arrives at the counting input of the counter 10- operating on. subtraction, and reduces the number recorded in the counter 10 by 1. In case this information sensor 25 will be polled by mules:) - gplek311

Since the litter 11 is secondary, since in this cell of block 15 is recorded 1, a pulse at the output of the first AND 17 element is not generated, and on the second element AND 20, coinciding with the pulse of the second driver 13, a pulse is generated, which through the element OR 21 sets the trigger 12 and the counter 18 to the initial state, allowing the connection of the following information sensor 25 to be allowed. The interrogation and connection of the other information sensors 25 to the common bus is carried out in the same way. After connecting each next information sensor, the 25th number is recorded854

It will decrease by 1 in counter 10. After interrogating all the information sensors 25, the number of which is determined by the initially recorded number in counter 10, the latter will go to the zero state, the output of the decoder 19 turns on a signal that triggers the third driver 22 pulses null

the block 15, the trigger 12 and the counter 18 are installed in the initial connection, the fourth pulse shaper 23 permits the launch of a new number of information sensors into the counter 10, and the cycle repeats.

Claims (1)

DEVICE FOR INTERVIEWING INFORMATION SENSORS, containing a clock pulse generator, switching units, the control inputs of which are connected to information sensors, a comparison unit and a first pulse shaper, a data processing time recording unit, a first memory register and an adder whose outputs are connected to the first inputs of the comparison unit, the second inputs of which are connected to the outputs of the information processing time accounting unit, the program matrix and the counter d, the outputs of which are connected to the information inputs of the switching units and the address inputs of the program matrix, the outputs of which are connected to the second inputs of the adder, characterized in that, in order to reduce the time of the interrogation of information sensors, a micro-counter is inserted into it, a multiplexer, a trigger, and a second a pulse shaper and a delay unit, a series-connected element NOT and a first AND element, the output of which is connected to the enabling inputs of the state counter and the first memory register, sequentially connected memory block, the second AND element, and the OR element, the output of which is connected to the installation inputs of the trigger and the state counter, the second memory register, the counter of the number of sensors, the decoder, the third pulse shaper and the fourth pulse shaper, the output of which is connected with an enabling input, in series the second register of memory, and counting - § th input of the counter of the number of sensors | connected to the output of the first pulse shaper | (* pulse generator and the second input of the element |> OR, the third input of which is connected-J ' ^{1 is not} connected to the input of the fourth pulse shaper g and the zero recording input of the memory block, the recording unit input of which is connected to the output the delay unit, the input of which is connected to the second inputs of the first and second AND elements, the address inputs of the memory block are connected to the information inputs of the state counter, information outputs of the micro command counter and address inputs of the multiplexer, the information outputs of which are connected inens with the outputs of information sensors, the output of the clock generator is connected to the counting input of the micro-command counter, the transfer output of which is connected to the input of the time processing unit.