SU1688203A1 - Electric parameters register in case of emergency - Google Patents

Abstract

This invention relates to instrumentation technology. The purpose of the invention is to expand the scope of application - achieved by introducing 3 clock pulses, a digital comparator 5, a memory element 6, a single vibrator 7, a control button 13, a time relay 8 in the form of a timer 9, a digital comparator 11), register 11 into a generator device. memory The input information is fed to the A / D converter 2 and, after conversion, to the first input of the digital comparator 5. In the event that the input values exceed a certain level, their value is written to the C memory block. In this case, time relay 8 is turned on and counts the time from the beginning of the emergency mode. After the expiration of the predetermined counting time, the relay of the time relay 8 is reset. 1 hp f-ly, 1 ill. V)

Description

The invention relates to electrical and measuring equipment and can be used to fix emergency electrical quantities on power lines with a remote sensing circuit based on components of the zero (reverse) sequence.

The purpose of the invention is the expansion of the scope.

The drawing shows a block diagram of a device.

The device consists of an input converter 1, an analog-to-digital converter (ADC) 2, a clock pulse generator 3, a memory unit 4, a digital comparator 5, a memory element 6, a one-shot 7, a time relay 8 consisting of a timer 9; digital comparator 10, memory register 11, display unit 12, control buttons 13, current limiting resistor 14, power supply unit 15.

The device operates as follows.

If there is no damage in the monitored network, the controlled parameter through the input converter 1 is fed to the input of an analog-to-digital converter (ADC) 2, which converts it into digital form during the conversion cycle time specified by the 3 clock pulses generator. If the value of the number at the ADC output does not exceed the value of the number ^ recorded in the memory element 6, then the circuit is not started and the information about the value of the parameter being monitored by the device is not stored.

If damage occurs in the monitored network, the value of the number at the output of the ADC 2 increases and, if it exceeds the number recorded in the memory element 6, then the comparator 5 is processed, which gives signals to the first control input of the memory unit 4, ensuring its preparation for recording information, to the first control input of the generator 3 clock pulses, ensuring its stop, and the input of the single-vibrator 7, ensuring its launch. When the single-shot 7 is activated, it gives a signal to the second control input of the memory unit 4, providing for the rewriting of digital information from the output of the ADC 2 to the memory unit 4. Digital information about the value of the monitored emergency mode parameter is stored in the memory unit 4 and can be read through the display unit 12. When the single-shot 7 is activated, the time relay 8 is started by starting the timer 9. Digital information from the output of the timer 9 about the time from the moment the damage occurred can also be read out through the display unit 12.

Returning the device circuit after reading the information can be done manually by pressing the button 13. If the information obtained when the device was triggered is not required for the purpose of determining the place of damage, it is automatically reset by starting the generator 3 and returning the timer 9 if the number is on the output of timer 9 exceeds the number recorded in memory register 11. In this case, information about the value of the monitored parameter is stored in the memory unit 4 until the next start of the circuit from the comparator 5 and can be used if necessary. The power of the circuit elements of the device during operation is carried out from the power supply unit 15.

Claims (2)

Claim 1. A device for fixing electrical quantities of emergency mode, containing a time relay, an input converter, an analog-to-digital converter, a memory unit, a display unit, the input of the input converter is connected to the input of the device, and the output is connected to the information input of the analog-digital converter, the output of which is connected with the information input of the memory unit, the output of which is connected to the first input of the display unit, characterized in that, in order to expand the scope of application, a clock pulse generator is introduced into it in, . control button, digital comparator, memory element and single-vibrator, the output of the analog-to-digital converter is connected to the first input of the digital comparator, the second input of which is connected to the output of the memory element, and the output is connected to the input of the single vibrator and to the first control inputs of the memory block and clock generator, single-vibration output the torus is connected to the second control input of the memory unit and the start input of the time relay, the digital output of which is connected to the second input of the display unit, and the output is connected via the control button Phenomenon with the input zeroing of the time relay and with the second control input of the clock generator. 2. The device according to claim 1, characterized in that the time relay contains a timer, a digital comparator and a memory register, the outputs of a timer and a memory element are connected respectively to the first and second inputs of the digital comparator, the output is connected to the output a time relay, the start input of which is connected to the start input of the timer, the zeroing input is connected to the zeroing input of the time relay, and the output is connected to the digital output of the time relay.