SU1401442A1 - Apparatus for centralized monitoring of parameters - Google Patents

Abstract

The invention relates to a measurement technique and can be used in multichannel systems for centralized control of parameters. for reading information from analog sensors and converting it to digital form. The purpose of the invention is to increase the speed of the device. The increase in speed is achieved by parallel reading of the parameter values and parallel conversion of the read values into a digital code across all information channels. The device contains sensors of parameters 11, 7 optimizers 21, comparison elements 31, amplifier 4, digital-analog converter 5, pulse counter 6, first and second keys 7 and 8, pulse generator 9, RS flip-flop 10, element 3 OR 11, unit 12 permissible values | The Research Institute of Parameters, the first 13 and second 1C // 14 comparison units, the registration unit 15. 1 il.

Description

Ro

The invention relates to a measurement technique and can be used in multichannel systems for centralized control of parameters, especially for fast-flowing technological processes, as well as during the early research, testing of various equipment.

The aim of the invention is to increase the speed of the device by providing the possibility of parallel reading of analog parameter values with parallel conversion of the read values into a digital code on all channels.

The drawing shows a block diagram of the device.

The device contains sensors 1i (analog signals), normalizers 21, elements .31 comparison, amplifier 4, digital-to-analog converter (DAC) 5, reversible counter 6 pulses, first 7 and second 8 keys, pulse generator 9, RS-flip-flop 10, element OR 11, the setting unit 12 of the permissible values of the parameters, the first 13 and second 14 comparison blocks, the registration block 15, which triggers the input 16 of the device.

Block 15 of the registration contains the Assembly of keys 17 and the multi-channel recorder 18.

The device works as follows.

By supplying a trigger pulse to the device input 16, the reversible counter 6 is set to the zero state, the trigger 10 is set to a state in which its output, the MOM output, connected to the control input of the key 8, will be a single signal, and also the pulse generator 9 will start . The pulses from the output of the generator 9 through the key 8 are fed to the summing input of the reversing counter 6, where they are summed up. The incrementing value with each clock of the generator 9 in the counter 6 is fed to the input of the DAC 5 and the inputs of the comparison units 13 and 14.

When reaching in the counter 6 a value equal to the maximum value of the monitored parameter range (set by the setting device 12), the codes at the inputs of the comparison unit 14 coincide to the coincidence signal from the output of the latter is fed to the S input of the trigger 10, which is thrown, removing the single signal from the control input key 8 and supplying a single signal to the control input of the key 7. In this case, the pulses from the output of the generator 9 pulses through the key 7 begin to arrive at the deduction of the input of the reversing counter 6, in which the generator is in each clock cycle 9 torus pulse occurs viitanie units accumulated from the maximum value range of controllable parameters. The subtraction process is performed until the comparison of the codes at the inputs of the comparison unit 13, i.e. the minimum value code specified by the setting unit 12 and the code at the output of the reversible counter register 6. At the time of comparing these values, the signal from the output of the comparison unit 13, via the OR 11 element, flips the trigger 10 to the state where the single signal from the direct output of the last allows the generator 9 pulses to pass through the key 8 to the summing input of the reversible counter 6; From this moment, the summation starts again, the pulses in the reversing counter 6 to the value corresponding to the maximum control value uemogo parameter range set point adjuster 12. By analogy with the previous in the time code comparing these values again switches down counter for subtraction, etc.

Thus, the inputs of the D / A converter 5 and the information inputs of the key assemblies 17 periodically change codes whose values correspond to a predetermined measurement range of monitored parameters recorded by the sensors 1.

The signals corresponding to the values of the monitored parameters from the outputs of sensors 1 are continuously fed through all channels through the normalizers 2 to the first inputs of the corresponding comparison elements 3, to the second inputs of which from the output 11ДП 5 through the amplifier 4 a signal varying in time in the range of values monitored parameters. At the moment of comparing the values of signals at the inputs of any of the comparison elements 3, a signal appears at the output of the latter, which is fed to the controls of the input of the corresponding key assembly 17, allowing the code to pass from its information

314014424

inputs to the outputs of one of the channel group of inputs of the first block

the registrar 18, a comparison, and the second group of outputs. Thus, in one cycle I am measuring the first group of inputs of the second block

the values in the reverse counter of the comparison, and n information channels 6 (from the minimum to the maximum heads, each of which contains dates of the monitored range) parameter tick connected by the output

analog values will be measured to the input of the normalizer connected

all channels, converted to digital-output with the first input, elements

a (coded) form and comparison, characterized by

are reproduced by a multichannel registrar, in order to increase the speed of the 18. action, an amplifier is inserted, a digital speed reading and an analogue converter, two keys

Conversion of values of a controlled and reversible pulse counter, taken up by this device of parameters that is not connected by a group of information, depends on the number of channels and on the actual paths to the first group of information

vu corresponds to the reading time of the inputs of the registration unit, to the second

analog value and its transform-groups of inputs of the first and second signaling for one channel. In addition, comparison to the group of inputs and numbers by an increase in the number of channels of the 20A analogue converter, running

in the equipment of the proposed device-kanmdim input - to the trigger input

is increased slightly and by the impulse generator, to the first one at the expense of the elements, the ratio of the OR element, as well as to the triggering directly to the channel input of the device, and the subtracting

the monitored system, At the same time, 25 and summing inputs are appropriate devices, due to the necessary outputs of the first and second bridge of sequential or selective keys connected by controlling alternating and alternating connection channels with inverse and

to the converter through switchboards direct outputs of the RS flip-flop, and differ in low speed, the OO-shaped inputs - with the output

reduced in proportion to the increase of the pulse generator, and S-input

the number of channels and the corresponding increase-rs-flip-flop are connected to the output by inci sion of the amount of equipment, the th comparison unit, and the R input is connected to the output of the 1SH element connected by the second

Claims (1)

Claims of the invention „j.input with the output of the first unit of comparison, the second group of information Device for centralized input unit registration is connected control parameters containing gene-with outputs of comparison elements, pulse pulse, RS-flip-flop, elements switched on by second inputs to output OR, the registration unit, the preamplifier of the Qamplifier connected with the input from the output values of the parameters, with the connection of the digital-analogue transformed by the first group of outputs with a lane.