SU1116448A1 - Telemetering device - Google Patents

Abstract

A TEMPERATURE DEVICE containing a block of code amplifiers, the outputs of which are connected via a multi-wire communication line to code relays, through whose closing contacts the corresponding sensors are connected to one end of the wire of the communication lines, a register block and display information that is different in that scopes, introduced analog-to-digital converter, switches, driver of trigger pulses shift register, decoder, control unit consisting of AND element and inverter, unit synchronization, one from the elements of NAND, element and, trigger, inverters, the other end of the communication line wire is connected; to the input of the analog-digital converter, the outputs of which are connected to the corresponding inputs of the first switch, the output of which is connected to the first input of the second switch, The control output of the analog-digital converter is connected to the first input of the first NAND element, the output of which is connected to the first input of a trigger, the output of which is connected to the first input of the second NAND element, the output of the first inv The rotor is connected to the second input of the first element AND, the output of which is connected to the second input of the second element AND-NOT and the input of the second inverter, the output of the second inverter of the sync block (L sion is connected to the first input of the shift register, the output of which is connected to the control input of the first switch and To the first input of the I control unit I, the output of which is connected to the second input of the second switch, the output of the decoder is connected to the inverter of the control unit, the second input of the I element of the control unit, to the control input of the second switch, BToifoMy to the register input port, the second input of the first CX) element of the IS-NOT synchronization unit, the second input of the trigger, the second. the input element And the synchronization unit, the input of the trigger pulse generator, the output of which is connected to the trigger input of the analog-digital converter, the output of the second switch is the information output of the device, the output of the second element AND-NOT of the synchronization unit, the control output of the device, the output of the And element and the output of the inverter blo

Description

The control unit corresponds to the control outputs of the device, the input of the decoder is the first control input of the device, and the input block of the code amplifiers the second control input of the device.

1116448

the input of the first inverter of the synchronization block — the synchronization input of the device; the input of the registration and display unit of information; the information input of the device.

one

I

The invention relates to telemechanical systems for measuring and processing their results and can be used, for example, to control the parameters of technological processes in automated control systems.

Devices are known for measuring and processing their results, comprising digital measuring devices, each of which is connected by a multi-wire communication line to a digital switch consisting of a connection unit for the communication lines, a decoder and a counter for the link number, the valve unit, the control unit, the unit protection, buffer register and microcomputers. These devices make it possible to measure the parameters of control objects by alternately connecting digital measuring devices through a digital switch to a microcomputer, which is used to process the measurement results L13 "

The disadvantage of these devices is their complexity. If there are a large number of control objects, it is necessary to include the same number of digital measuring devices. Moreover, if these objects are scattered and located at a great distance from the microcomputer, such as when carrying out a measurement subsystem in an industrial control system of a large enterprise, the communication line should have such a large the number lived, it is impossible to practically implement.

It is also known a time-division telemechanical device containing switches that connect information objects via a multi-wire communication line to receiving devices and analog signal converters in digital form.

code. In this device, the communication line

more simple, since it has a small number of lived C2.

The drawbacks of the device are its structural complexity and the limitations of the functions performed.

The closest to the proposed technical entity is a telemetering device containing a block of code amplifiers, the output of which is connected via a multi-wire communication line to code relays, through whose closing contacts the corresponding sensors are connected to one end of the wire of the communication line, the recording and display unit as well as a block of intermediate amplifiers connected to an extraordinary code feed device, a device for forming an interval between the codes and the first output of the main binary with the second is connected to the diode matrix control unit and the recording and display unit, and the input through the frequency divider to the multivibrators and the pulse distributor ЗJ.

The disadvantage of the device is its limited scope.  This telemetering device measures the parameters of control objects and records them without processing the measurement results.  Changing the number and composition of tasks without changing the set of blocks and the totality of connections between them in this device is impossible.  The device is complex in its hardware implementation and not reliable enough in operation.  The structure of the device is poorly compatible with the possibility (3 implementations on a modern element base.  The purpose of the invention is to expand the scope of the device to simplify it.  The goal is achieved by the fact that a telemetering device containing a block of code amplifiers, the outputs of which are connected by a multi-wire communication line to code relays, through whose closing contacts, the corresponding measurement objects are connected to the data conductor at the beginning of the communication line, additionally contains an analogue digital converter, trigger pulse driver, shift register, decoder, control unit, consisting of AND element and inverter, synchronization unit and consisting of AND-NOT elements, AND element, trigger, inverters, the other end of the communication line wire is connected to the input of an analog-digital converter, the outputs of which are connected to the corresponding inputs of the first switch, the output of which is connected to the first input of the second switch, A / D converter output is connected to the first input of the first NAND element, the output of which is connected to the first trigger input, the output of which is connected to the first input of the second NAND element, the output of the first inverter is connected to toromu input of the first AND gate whose output is connected to a second input of the second element.  AND-NOT and the input of the second inverter, the output of the second inverter of the synchronization unit is connected to the first input of the shift register, the output of which is connected to the control input of the first switch and to the first input of the control unit AND element, the output of which is connected to the second input of the second switch connected to the inverter of the control unit, the second input of the control unit AND, the control input of the second switch, the second input of the shift register, the second input of the first IS-NOT element of the synchronization unit, the second input t the rigger, the second input of the AND block of the synchronization block, the input of the trigger pulse generator, the output of which is connected to the triggering 484 input of the analog-digital converter, the output of the second switch is the information output of the device, the output of the second element of the AND-NOT block of the synchronization block - the control output of the device, the output the element And and the inverter output of the control unit — the corresponding control outputs of the device; the input of the decoder is the first control input of the device; the input of the code amplifier unit — the second control input of the device; the input of the first synchronization inverter of the synchronization input of the device.  the input of the registration unit and the display, NIN information - the information input of the device.  The drawing shows a block diagram of the proposed device.  The device contains a multi-wire communication line 1, code relays 2, contacts 3 code relays, measurement objects 4, block 5 code amplifiers, analog-to-digital converter 6 (ALP), outputs 7 ADC, triggering input 8 ADC, output 9 ADC, (bus signal end of conversion), the first switch 10, the second switch 11, the microcomputer 12, the microcomputer width 13, the microcomputer control bus 14 ,, the microcomputer input synchronization bus 15, the microcomputer tracking signal bus 16, the microcomputer output 17 bus, the synchronization unit 18 running the pulses, register 20sdv a, control block 21, decoder 22, first logical element AND-NO 23, trigger 24, first logical element AND 25, first and second inverters 26 and 27, second logical element AND-NOT 28, second logical element And 29, third inverter 30, microcomputer registration tires 31, information registration and display unit 32, second control input 33, devices, first device control input 34, device synchronization input 35 I control devices 36, 37 and 38, device information output 39, information input device 40.  At the beginning of the multi-wire link 1, code relays are connected to the code cores. through contacts 3 of which objects 4 are connected to information conductors of multi-wire communication line 1.  At the end of link 1, the code GILLs are connected to output 5 and the data conductors are connected to the analog-to-digital converter 6, the outputs 7 of the analog-to-digital converter are connected via serially connected first 10 and second 11 co-mutators to buses 13 of microcomputer 12, .  Bus 8 start analog-to-digital Converter connected to the output of the imaging device 19, and the output of 9 with the first input unit 18.  The microcomputer control buses 14 are connected via a decoder 22 to the second input of the unit 18, the input of the generator 19, the input of the register 20, the first input of the control unit 21 and the control input of the second switch 11.   15 synchronization, input of the microcomputer are centered with the third input of the unit 18, the first output of which is connected to the remote control computers 16, and the second output to the register input 20.  The output of register 20 is connected to the control input of the first switch 10 and the second input of block 21, the first output of which is connected to the input of the second switch 11 and 13 inputs, micro computers, and the second output only with buses 13 of micro computers.  Tires 17 output microcomputers. connected to the input of block 5, and the bus 31 registration of microcomputers connected to the Input of block 32.  The connection of micro-EVN to devices is carried out through the corresponding outputs of the device.  The synchronization unit 18 contains the first 23 and second 28 logical elements AND-NOT, the first logical element AND 25, the trigger 24 and the first 26 and second 27 inverters.  The first and second inputs of the first NAND gate 23 are, respectively, with the first and second inputs of the synchronization unit 18.  The input of the first inverter 26 is the third input of the synchronization unit 18.  The output of the second NAND gate 28 is the first output of the synchronization unit 18, and the output of the second inverter 27 is its second output.  The second input trigger 24 is connected to the second input of the first logical element AND-NOT 23 and the first input of the first logical element AND 25.  The second input of the first logic element And 23 is connected to the output of the first inverter 26.  The output of the trigger 24 is connected to the first input of the second logical element AND-NOT 28, the second input of which is connected to the output of the first logical element AND 25 and the input of the second inverter 27.  The control unit 21 comprises a second logic element AND 29 and a third inverter 30.  The first input of the second logic element 29 is connected to the input of the third inverter 30 and is the first input of the control unit 21.  The second input of the control unit 21 is the second input of the second logical element AND 29.  The output of the second logic element AND 2 $ is the first output of the control unit 21, and the output of the third inverter 30 is the second output of the control unit 21.   The microcomputer 12 entering the structure of the telemetering device, in accordance with the program embedded in it, organizes an alternate survey of monitored points on which 4 measurement objects are located (monitored sensor), measurement of monitored values, processing of measurement results, outputting the necessary data to the recording and display unit , change in necessary cases, taking into account the results of measurements of the tactics of the survey of measurement objects.  On the output buses 17 of the microcomputer 12, the signal pattern combinations corresponding to the codes of the objects of measurement are sequentially formed in time.  From the output buses, these combinations are fed to the input of block 5 of code amplifiers and, after amplification, to the code cores of link 1.  In this case, the corresponding code relay 2 is activated, and with its contacts 3 it connects the measurement object 4 and the information conductors of the communication line 1.  The measured parameter is fed to the input of the analog-to-digital converter 6.  At the same time, a code combination of control appears on the control bus 14 on the buses 17 of the output of the microcomputer.  With this code, the operation of the telemetering device and data input into the microcomputer is organized.  The control code enters the input of the decoder 22, which selects it from other possible code combinations on the microcomputer control buses 14 and generates the output signals necessary to prepare other units for operation. .  The single signal appearing at the output of the decipher 22 when the control code arrives at its input prepares the shift register 20 for subsequent switching.  The same signal, which arrives at one of the inputs of the trigger 24, the first logical element IS-NOT 23 and the first logic element AND 25 of the synchronization unit 18, prepares them for later switching when single signals arrive at their other input.  The same applies to the second logical element AND 29, which is part of the control unit 21.  The single signal delivered to the second switch 11 is allowing its operation, and its appearance at the output forms the trigger pulse body 19 leads to the formation of a trigger pulse at its output, which transfers the analog-to-digital converter from the standby mode to the conversion mode.  Simultaneously with the occurrence of code combinations on bus 17 of output 17 and control 14 of microcomputer 12, it also gives out a signal to confirm it. readiness to enter data from analo. go-to-digital converter.  This signal appears on the input synchronizer buses 15 and has a logical O value when the microcomputer is ready for input.  This signal is inverted by the first inverter 26 of the synchronization unit 18 and fed to the second input of the first logic element AND 25, the output of which becomes equal to logic 1 and fed to one input of the second logic element IS-NOT 28, and also after inverting by the second inverter 27 is fed to the gate The inputs of the trigger register 20 sdv ha.  The presence of a zero signal at the gate inputs of the triggers of the shift register 20 determines the outcome state of this register.  At the same time, he switches the first switch 10 in such a way that the first decade of the transformed into a discrete form is passed onto its output. analog-to-digital signal converter, received from the object of measurement.  Being in the initial state, the shift register 20 also sends a zero signal to the second input of the second logic element 29, which is included in the structure of the control unit 21.  The signal at its output in this case has a logic level of O and does not affect the second switch 11, which also skips the first decade of the input number to the microcomputer input 13.  At the same time, the control unit generates, on the respective lines of the input buses 13, a command code for which this decade should be written into the ten register of the microcomputer 12.  However, the microcomputer does not immediately enter the information byte set in this way on the input bus lines.  She awaits the arrival of a data entry tracking signal.  This signal enters the microcomputer after the analog-to-digital converter finishes the process of converting the analog measured value to a discrete form and gives a pulse. The end of the conversion of a single level on the buses 9 of the signal of the end of the conversion.  This impulse arrives at the nejpBoro code of the NAND 23 logical element 23 of the synchronization unit 18.  At the output of the logic element, a zero-level pulse appears, which causes the output of the trigger 24 to receive a single-level signal, which is then held until the single signal is removed to the trigger 24 from the decoder 22.  The signal from the output of the trigger 24 is fed to the input of the second logic element AND NOT 28.  As a result, at its output (being the first output of the synchronization unit 18, a logical signal O appears, which is sprinkled as a signal of the input data on the buses 16 of the trace signal of the microcomputer, upon receipt; the signal of the tracking signal in the kopaBM enters the data byte , exposed on the tires 13 input and removes the sync signal input bus 15.  This leads to the fact that at the output of the first logical element And 25 of the synchronization unit 18, the signal takes the value of logical O, and after the second inverter 27 the value of logical 1.  By entering the gating inputs of the shift register of the shift register 20, he shifts the number written in it by one bit.  Now the shift register 20 switches the first switch so that it passes to its output the second decade of the number set on the buses 7 of the analog-to-digital converter output. The second switch remains in its original state.  Thus, the second byte of information appears on the input bus 13 of the microcomputer.  Vlo. By 18, synchronization automatically removes the tracking signal after the microcomputer removes the synchronization input signal.  This is due to the fact that at the input of the second logical element AND-HE 28, connected to the output of the first logical element AND 25, included in the synchronization unit 18, the single signal disappears and, therefore, at the output of the second logical element AND-NE 28 is a logical 1 signal (t. e.  the tracking signal is removed).  After entering the information input and input on the buses 13, the microcomputer returns to the readiness mode for entering information, setting the appropriate readiness signal (logical O) on the input synchronization buses 15.  This leads to the appearance of a signal with a level equal to the logical O on the gate input of the shift register 20 (t. e.  the register is prepared for the next, switching), as well as for the reappearance of the signal, tracking on the 16 microcomputer buses.  With its arrival, the microcomputer enters the second byte of information exposed on the input buses 13.  Further, the process is repeated cyclically as many times as the decimal places of the signal value generated by the measurement object must be entered.  Moreover, each pasj when the microcomputer enters the next byte of information and removes the input readiness signal (input synchronization), information is shifted, captured in the shift register 20 When you enter the last decade of the measured value at the output of the shift register connected to the second input of the second logic element 29 control unit 21 a single level signal appears, and the first switch 10 is locked.  At the output of the second logic element AND 29, a signal of logical 1 appears.  He enters the second switch 11, as well as directly on the bus 13 input microcomputers.  In this case, a command is formed on the input buses 13, telling the microcomputer that the input is completed and the work on the program embedded in it should be continued.  The command is entered into the microcomputer as before, when the tracking signal arrives from the synchronization unit.  In accordance with the program, the microcomputer processes the measurement results entered into it and provides the necessary information via the registration buses 31 to the information recording and display unit 32.  Compared with the prototype, which in this case can also be viewed as the basic device, the structure of the proposed telemetering device is simpler, since the functions of many of the prototype blocks are implemented here by software.  At the same time, the functionality of the device is significantly expanded, as it can, with unchanged instrumental composition, solve a wider variety of different tasks.  The proposed device, for example, can P1) not only measure and measure measured values, as the basic device does, but also.  compare the measured value with its specified nominal value, reveal deviations of the measured values, change the frequency and order of polling of the monitored points (measurement objects) depending on the measurement results and perform other functions that can be specified by the microcomputer program.  Structurally, the proposed device, in contrast to the prototype, ensures its implementation on a modern element base, which contributes to an increase in the reliability of its operation.  The technical and economic efficiency of the application of the invention is mainly due to its ability to solve a wider range of tasks.  When used as a telemetry subsystem in an automated process control system, the information content of the measurement results of technological processes displayed in the information recording and display unit (printer, display) is more informative, since these results were previously processed (comparative analysis was performed, dangerous deviations of parameters were identified from the norm and t. d. ).  At the same time, the operator is freed from the routine operations of processing measurement results, his work conditions are facilitated, which helps to reduce the errors he makes, and increases the efficiency of process control.  All this ultimately provides higher labor productivity and leads to an increase in production output without additional production capacity into the water.  At the same time, the output of products grows in line with an increase in the intensity of work carried out by the equipment.  For companies in the construction industry, for example, the increase in production may be 2-8%,

Thanks to constant control. consumption of raw materials, fuel, energy, the detection of deviations of their actual consumption from the standard, compliance with the planned consumption rates and bringing them to a progressive level when applying the proposed telemetering device can be provided for the construction industry to reduce the material and energy costs by 2 -four%,

An increase in the volume of calculated diagnostic and other functions, increasing the reliability of the telemetering device reduces the likelihood of rejection due to the lack of information about the controlled parameters of technological processes and contributes to an increase in the yield of finished products with all other equal conditions.

Claims (1)

A TELEVISION DEVICE, containing a block of code amplifiers, the outputs of which are via multi-wire ^: the communication line is connected to code relays, through the make contacts of which the corresponding sensors are connected to one end of the wire of the communication line, the information recording and display unit, characterized in that, in order to expand the area applications, an analog-to-digital converter, switches, a trigger pulse shaper, a shift register, a decoder, a control unit consisting of an And element (and an inverter, a sync block) are introduced synchronization, consisting of AND-NOT elements, an element, a trigger, inverters, the other end of the communication line wire is connected; to the input of an analog-to-digital converter, the outputs of which are connected to the corresponding inputs of the first switch, the output of which is connected to the first input of the second switch, the control output of an analog-to-digital converter is connected to the first input of the first AND-NOT element, the output of which is connected to the first input of the trigger, the output of which is connected to the first input of the second AND-NOT element, the output of the first inverter is accessible to the second input of the first AND element, whose output is connected to the second input of the second AND element NOT and the input of the second inverter, the output of the second inverter of the synchronization unit is connected to the first input of the shift register, the output of which is connected to the control input of the first switch and to the first input of the And element the control unit, the output of which is connected to the second input of the second switch, the decoder output is connected to the inverter of the control unit, the second input of the AND element of the control unit, the control input of the second switch, the second at the input of the register a ~~ LED VIG, the second input of the first AND gate element of the synchronization block, the second input of the trigger, the second input of the AND element of the synchronization block, the input of the trigger pulse generator, the output of which is connected to the trigger input of the analog-to-digital converter, the output of the second switch is the information output of the device, the output of the second element AND of the synchronization block by the control output of the device, the output of the element AND and the inverter output is the input of the first inverter of the synchronization block - the synchronization input of the device properties, the input of the registration and display unit of information, information - the information input of the device. ka control - the corresponding control outputs of the device, the decoder input is the first control input of the device, the input of the block of code amplifiers is the second control input of the device,!