SU1451752A2 - Remote measurement and control arrangement - Google Patents

Abstract

The invention relates to telemechanics with a radio channel, can be used on power supply objects and is an improvement of the invention according to the authors. St. No. 842907. The goal is to reduce power consumption. The device contains a radio transmitter, a command generator, a command reading unit, a control unit, a time unit, a radio receiver, an address decoder, a memory unit, a recorder at the control room, a radio receiver, an address decoder at the execution point. switches, radio transmitter, time-program block, current parameter measurement block. To achieve the goal, a block of memory, a pulse driver for the start of the message and a pulse driver for the end of the message are entered at the execution point. The measurement unit consists of sensors with output signals of voltage, current, resistance, frequency, voltage-frequency transducers, current-frequency transducers, resistance-frequency, frequency-code, switch of converter input circuits, and the output of the frequency converter-code is the output of the measurement unit. A program-time block consists of a time pulse generator connected in series by a measurement period timer, a measurement timer, a transmission timer, a reception timer, and an OR element. The time-program block is constantly under voltage and controls the operation of the other blocks. The transfer of information to the control station begins after all the measurement results are recorded in a memory. 2 cp f-ly, 2 ill. (L 4 CL SL TC

Description

MS)

The invention relates to radio remote control telemechanics, is intended for use in automated control systems for dispersed energy sources and is complementary to auth. St. No. 842907.

The aim of the invention is to reduce the power consumption of the device.

FIG. 1 shows the flow chart of the control room; in fig. 2 is a block diagram of the device execution unit.

The control station contains a control unit 1, a radio transmitter 2, a command reading unit 3, a radio receiver 4, a memory unit 5, a time unit 6, a command driver 7 and an address encoder, an address decoder 8, a recorder 9.

The executive station contains a radio receiver 10, an address decoder 11, a program-time unit 12, a power supply unit 13, switches 14 and 15, a measurement unit 16, a memory unit 17, shapers of the beginning and end of the message, the radio transmitter 20.

The measurement unit 16 consists of a group of sensors 21, a voltage-to-frequency converter 22, a current-to-frequency converter 23, a resistance-to-frequency converter 24, a frequency-to-frequency converter 25, a switch 26.

The program-time unit 12 consists of a generator 27 time pulses, a timer 28 for the measurement period, a timer 29 for the measurement duration, a timer 30 for the transmission interval, a timer 31 for the reception interval, an OR element 32.

The device works as follows.

The control room alternates information exchange with executive points with time division multiplexing. At a given point in time, time block 6 and block 12 begin to generate control signals for the exchange of information. When receiving information from the execution unit, signals at the control room are received at the input of the radio receiver 4 and through the decoder 8 are entered into the memory unit 5. The received information is displayed on the registrar 9. In the transmission in control unit 1, a command is generated to control the execution point, which through command reading unit 3 and command generator 7 and commands. the address encoder is fed to the input of the radio transmitter 2. At the executive station, the power to the block 12 is continuously supplied. The remaining blocks are powered under the control of block 12 via switches 14 and 15. Timers 29, 30 and 31 operate sequentially in time. After counting the measurement period by timer 28, block 12 supplies a control action to switch 15, which supplies power to blocks 16 and 17. At the same time, operation of all blocks of the control point is controlled by timer 29. When transmitting information from the control point, block 12 controls the switch 15, power through which is supplied to block 17 and the radio transmitter 20. When receiving signals from the control room, timer 31 controls the switch 14, the power from which is supplied to the radio receiver 10 and the decoder 11. j

The operation of the executing office begins with measurements. First, on the information input of the block 17 under the influence of the timer 29 with the driver

18 byte of start of message is given. Information is recorded in block 17 under the influence of a signal from timer 29. Then, according to the control action of timer 29, circuits are prepared for performing measurements

from the corresponding sensor 21. The first sensor 21 is connected by the switch 26 to the input of the corresponding converter 22, 23, 24 or 25. If necessary, the output of the converters 22, 23 or 24 with the output frequency signal is connected by a switch: torus 26 to the input of the frequency converter in code 25 Then, to the corresponding input of block 16, which is the control input of converter 25, from the output of timer 29 a pulse of a certain duration is applied, during which the frequency-code conversion is performed. The measurement result is recorded in block 17. Subsequent measurements are performed in the same way. After all the measurements of timer 29 have been completed

19, the information input of block 17 is fed to the end of message byte. This byte is written in block 17.

Then, under the influence of timer 29, timer 30 starts operating. Under the control of transmission timer 30, from block 17, the information transmitted to the control center begins to flow to the input of radio transmitter 20.

At the executive point, when control information is received from the control room, including commands for temporal correction of block 12 and setting the measurement period, signals are received via radio receiver 10 and decoder 11 to timer 28. At the time correction command, the time error of timer 28 due to generator instability 27, y -1 is reduced to zero. By the command of the measurement period, the timer 28 sets the measurement period (HanpiiMep, 2, 4, 6h),

After the exchange of information from the control room and the executive, on which unit 12 continues to operate, power is removed from the remaining units.

The introduction of additional units into the device allows us to separate the processes of measurement and transmission of measurement results. First, all the measurements are performed alternately, the results of which are recorded in the memory unit of the execution unit. In this case, power is not supplied to the radio transmitter, which consumes most of the energy at the executive station. Then, the second cohmulator supplies power to the memory unit and the radio transmitter of the control point, from which information arrives at the control room. At the same time, the time channel of the executive point is occupied only for the time of transmission and reception of information, excluding the time taken to measure the parameters. Since the radio transmitter is not working at this time, the power consumption at the executive station is reduced.

four

Claims (3)

1. Telecontrol and telemetering device according to auth. 842907, characterized in that, in order to reduce power consumption, a memory block, a message start pulse generator and a message end pulse generator are inserted into the executive station in order to reduce power consumption. 2 between the output of the current parameter measurement unit and the second input of the radio transmitter is connected to the first information input and output, respectively, the memory block, the first and second additional outputs of the program-time block via the message start pulse generator and the message end pulse generator, respectively, are connected to the second and TpeTbeNry information inputs of the block memory, the third additional output of the time-program block is connected with the third - the input of the measurement unit of the parameter, a quarter and a pt additional outputs of the program-time block are connected respectively to the second and third control unit 11 input of the second switch, the fifth And the sixth additional outputs of the program-time block are connected respectively to the first and the second control inputs of the memory unit, the auxiliary output of the second switch is connected to the input of the memory unit. 2. The device according to claim 1, wherein the software-time unit contains a time pulse generator, a measurement period timer, a measurement duration timer, a transmission interval timer, a reception interval timer, and element 1 shi the output of the time pulse generator is connected to the first inputs of the timer of the measurement period, the timer of measurement duration, the timer of the transmission interval and the timer of the reception interval, the input of the time pulse generator is combined with the second inputs of the measurement period timer, the measurement duration timer, the transmission interval timer and the reception interval timer and is the second block input, the third input of the measurement period is the first input of the block, the output of the measurement period timer is connected to the third input of the measurement duration timer, the first output of which is connected to the third input of the transmission interval timer, the first output of which is connected to the third input of the interval timer reception, the second output of the reception interval timer and the second and third outputs of the measurement duration timer are the outputs of the block, the fourth, fifth, sixth and seventh outputs of the measurement duration timer are with Respectively, the third, first, second, and sixth additional outputs of the block, the third output of the measurement duration timer is connected to the first input of the OR element, the second output of the transmission interval timer is connected to the second input of the OR element and is the fifth additional output of the block, the output of the OR element is the fourth additional output block. 3. Device pop.1, which differs from the fact that the measurement unit The current parameter contains a group of sensors, a switch, a voltage to frequency converter, a current to frequency converter, a resistance to frequency converter, and a converter. The 5 impedance drivers in are connected to the corresponding switch inputs of the switch, the input and output of the converter in the code are corresponding frequency c. code, sensor outputs of the JQ group with the main input and output connected to the corresponding information inputs of the switch, the corresponding outputs of which are connected to the first inputs of the voltage to frequency converter, current to frequency converter, resistance to frequency converter and frequency converter to code, the second inputs of which are combined with the sensor inputs of the group and the switch input and are the first input of the unit, the outputs of the voltage-to-frequency converter, the current-to-frequency converter and the resistance-to-frequency converter are connected to the corresponding switch inputs, the third input and the output of the frequency converter to the code are an additional input and output, respectively. block. 1 Compiled by 3. Nizamutdinova Editor E. Kopcha Techred M. Didyk Korrektor M. Demchik Order 7085/50 Circulation 518 VNIISH State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035   ,, „,.-.-. ,, ------ - - - - - Production and printing company, Uzhgorod, st. Project, 4 Subscription