SU1559433A1 - Device for interrogation of information sensors - Google Patents

Abstract

The invention relates to communication technology. The purpose of the invention is to expand the functionality by polling sensors with different signal time parameters. The device contains a generator of 1 clock pulses, trigger 2, element AND-NOT 3, counter 4 states, switching blocks 5, information sensors 6, elements AND 7, 10, blocks 8, 22, 27 switching, elements OR 9, 15, counters 11, 19, comparison unit 12, program matrix 13, pulse formers 14, 21, frequency divider 16, indication blocks 17, 23, decoders 18, 20, 24, multiplexer 25 and memory block 26. The invention ensures the operation of the device in three modes: the mode of automatic interrogation of information sensors 6

the mode of visual control and reading information to an external device

the measurement mode of propagation time of information from the information sensor 6. 1 Il.

Description

one

(21) 4438128 / 24-09

(22) 08.06.88

(46) 04.23.90. Bnsh. № 15 (72) V.D.Rusakov

(53) 621.395.345 (088.8)

(56) USSR Author's Certificate No. 1172085, cl. H 04 Q 9/14, 1983.

(54) DEVICE FOR SURVEYING INFORMATION SENSORS

(57) The invention relates to communication technology. The purpose of the invention is to expand the functionality by polling sensors with different signal time parameters. The device contains a generator of 1 clock pulses, trigger 2, elements AND-NOT 3, a counter of 4 states,

switching blocks 5, information sensors 6, AND elements 7, 10, switching blocks 8,22,27, elements OR 9, 15, counters 11, 19, comparison block 12, program matrix 13, pulse former 14,21, frequency divider 16 , indication blocks 17, 23, decoders 18, 20, 24, multiplexer 25 and memory block 26. The invention ensures the operation of the device in three modes: the mode of automatic interrogation of information sensors 6; the mode of visual control and reading information to an external device; the measurement mode of propagation time of information from the information sensor 6. 1 Il.

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The invention relates to communication technology, in particular to devices for interrogating information blocks and sensors with variable interrogation frequency,.

The purpose of the invention is to expand the functionality by polling sensors with different signal time parameters.

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

The device contains a generator of 1 clock pulses, a trigger 2, an element AND-NOT 3, a counter of 4 states, n blocks 5.1-5. A (n 1,2,3 ...) switching, n information sensors 6,1-6. n. ,,, the first element AND 7, the first switching unit 8, the first element OR 9, the second element AND 10, the first counter AND, the comparison block 2, the program matrix 13, the first driver 14 pulses, the second element OR 15, the frequency divider 16 , first display unit 17, first

a decoder 18, a second counter 19, a second decoder 20, a second pulse shaper 21, a second block, 22 switches, a second indication block 23, a third decoder 24, a multiplexer 25, a memory block 26, and a third switch block 27.

A device for polling information sensors operates as follows.

The device operates in three modes: automatic interrogation of information sensors 6.1–6, p. ,,, visual monitoring and reading information into an external device, and measuring the time of propagation of information from information sensors 6.1–6.

When the device is installed in the first mode of operation (i.e., when the first input of the device and the switching unit 8 has the enable signal) pulses from the generator 1 output through the divider 16 and the switching unit 8 and the open (signal from the inverse trigger output 2) element AND 10 enters the counting input of the counter 11. Counter 11 counts the number of pulses, equal to the number recorded in the program matrix 13, which is determined by the address code generated by the counter 4, to the inputs of the program matrix J3. As a result, the comparator unit 12 generates the input of the imager 14 of another information sensor 6c1-6 „n with a different address, for which another polling time other than the other information sensors 6.1-6p is specified using the software matrix 13.

When polling, the address code is fed to the inputs of all 5.1-5. Switching blocks. In this case, only one of the 5,1-Z.p switching blocks opens, namely, the conditional address (number) of which coincided with the code of the address set at its inputs. Information in digital form from the outputs of the corresponding information sensor 6.1-bp is connected through the opened 5.1-З.п switching unit and is fed through the common information bus to the shaper 21 inputs. From the information outputs, through the switching unit 27 it goes to the information inputs of the memory block 26 ti. Recording information received in memory block 26 is performed using decoder 20, the inputs of which are fed the address code from the outputs of counter 4 and the signal from the output of comparator unit 12 through the driver 14 and the element OR 9 O Each output from the group of outputs of the decoder 20 is connected to the corresponding synchronization input (information recording) of the memory block 26. Information is recorded in memory block 26 at the end of each polling time interval, i.e. already after the arrival of information from the outputs of the 6.1-bp information sensors to the information inputs of the memory block 26.

After the end of the survey cycle, i.e. After all the 6, 1-bp information sensors were polled, the information received from them was recorded and stored in memory block 26. The shaper 14 generates a pulse of a predetermined duration through the OR element 9 to the installation input of trigger unit 2 and through the OR element 15 to the installation input zero of the counter 11. The trigger 2 is set to one and the counter I is s.

Now the impulse from the output of the generator 1 through the divider 16 and the switching unit 8 goes through the open element IS-NOT 3 to the counting input of the counter 4, the counter 4 switches to the new state upon the arrival of a pulse,

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and trigger 2 switches to the logical,

The status code of counter 4 is applied to the address inputs of the program matrix 13, from the outputs of which a binary code of a number is generated, meaning the polling time of one of the 6.1-bp information sensors, whose address corresponds to the counter status code 4. Next, counter 4 again switches and survey work is repeated.

Now it is possible to switch to the second mode of operation - when neither the first nor the second inputs of the device and the switching unit 8 are given a permission signal.

In this case, the pulses from the output of the generator 1 pass through the frequency divider 16, the switching unit 22 to the counting input of the counter 1I, which changes its state. The status code from the outputs of the counter 11 is fed to the address inputs of the multiplexer 25, the first (address) outputs of the device and the inputs of the decoder 18, the outputs of which are connected to the display unit 17 which displays the number (address) of the sensor in digital form in decimal form.

From the outputs of the corresponding memory register of the memory block 26 through multiplexer 25 to the second (informational) outputs of the device is supplied in i digital form. The information about the state of information sensor 6, -6. 0 This information from the outputs of multiplexer 25 goes through another decoder 24 an indication unit 23 on which it is displayed, for example, in alphanumeric form.

The frequency of information change on the display units 17 and 23 is determined by the frequency of the pulses coming from the output of the divider 16, and is set by the operator using the switch unit 22 by applying signals to the third inputs of the device.

The visual control of the information contained in the memory unit 26 can be carried out independently of the automatic interrogation of the information sensors 601-6, n when operating in the first mode.

In addition, when a read signal-pulse device is fed to the fourth input from an external device, for example, a microcomputer or microprocessor

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Sob from the first outputs of the device, you can read the address code of the information sensor 6.1-6 „p, and from the second outputs - the data for statistical processing.

When the third operating mode is set at the second input of the switching unit 8 (the second input of the device) to one of the inputs of the element 7 and the input of the switching unit 27, a permission signal is generated, which for a separate input of the program matrix 13 is a signal to prohibit the input of the code.

The pulses from the output of the generator 1 through the switching unit 8 proceed further to the blocks and elements in the same way as in the first mode of operation.

Information from the interrogated information sensor 6.1-bp comes through the imaging unit 21 to the element 7 and the switching unit 27. When an element 7 of the code arrives at the inputs, containing all logical 1 (which is preset in the information sensors 6. 1-6.p), a signal is generated from its output through the element OR 9 and the decoder 20 to the recording inputs of the memory block 26, the operation of which the code of the number of the counter 19 through the switching unit 27 is recorded in the memory unit 26. The signal, applied to the second input of the device, allows such a connection and prohibits the issuance of a code from the outputs of the program matrix 13.

The signal generated from the output of the element OR 9 is fed to the setup input of the trigger 2, sets it to the logical 1 state. Under the action of the pulse transmitted from the generator I output through the switching block 8 and the IS-3 element to the counter 4, next state. The code of this state connects the next information sensor 6.1-6.p via the 5 about 1-5. Switching unit, which generates a signal containing all units, etc.

After going through the whole cycle, i.e. polling all information sensors 6,1-bp in the mode of measuring the propagation time, in block 26 of the memory information is recorded on the propagation time along the circuit (communication line) from each information sensor 6.1-6.

Next, moving to the second mode of operation, it is possible to visually analyze the data contained in memory block 26.

Knowing the specific values of the propagation time of the information along the circuit of each informational sensor 6.1-6. The obtained values can be taken into account when programming the program matrix 13 - setting the time for polling the information sensors.

Claims (1)

Invention Formula A device for polling information sensors, which contains a clock pulse generator, a trigger, the first input of which is connected to the output of the first OR element, the state counter of which outputs are connected to the address inputs of the program matrix and the first information inputs of the switching units, where n is the number of information sensors, the second information inputs of the n switching units are connected to the outputs of the corresponding n information sensors, the first element I, the output of which is connected to the first input of the first element IL The second input is connected to the output of the first pulse generator, the input of which is connected to the output of the comparator unit, the second element AND, the first counter and the first decoder, the memory unit, the multiplexer and the second pulse generator, sequentially connected, in order to expand the functional capabilities by providing a survey of sensors with different time parameters of the signal, the first, second and third switching blocks, the frequency divider, the first and second display blocks, the second and third encoders, the second counter, the NAND element and the second OR element, the first and second inputs of the first switching unit being the first and second inputs of the device for interrogating information sensors, the third inputs of which are the first inputs of the second switching unit, the second the inputs of which are connected c 5 0 “Q five five with the outputs of the frequency divider, the first output of which is also connected to the third input of the first switching unit, the fourth input of which is connected to the output of the clock generator and the input of the frequency divider, the output of the first switching unit is connected to the counting input of the state counter and the second the trigger input, the direct output of which is connected to the second input of the NAND element, and the inverse to the first input of the second And element, the second input of which is connected to the output of the first switching unit, the installation inputs are zero The igger and state counter are combined and are the input of the initial setup of the device for polling information sensors, which is connected via the second OR element to the zero input input of the second counter, the counting input of which is connected to the output of the second element, And the second counter outputs are connected to the corresponding first the inputs of the comparison unit and the third input unit, the second inputs of which are connected to the outputs of the second pulse shaper and the first inputs of the first element And, the second input of which is connected the second input of the first switching unit, the third input of the third switching unit and the input of the program matrix, the outputs of which are connected to the second inputs of the comparison unit, the outputs n of the switching units are connected to the corresponding inputs of the second pulse generator, the outputs of the state counter are also connected to the corresponding first inputs of the second decoder, the second input of which is connected to the output of the first OR element and the second input of the second OR element, the output of the second switching unit, the third input of which is h The fourth input of the device for polling information sensors is connected to the input of the first counter, the outputs of which are the address outputs of the device for polling information sensors and connected to the first inputs of the multiplexer, the outputs of the first decoder are connected to the inputs of the first display unit, the outputs of the second decoder are connected to the first inputs of the block memory, the second inputs of which are connected to the outputs of the third U155943310 the switching unit, the outputs of the picking unit, and the outputs of the multiplexer, in mint, connect the information outputs of the multiplexer and the third decoder of the device to interrogate the information connected to the inputs of the second block of in-sensors,