INTELLIGENT DEVICE FOR MEASURING DISTANCE TO POINT OF DAMAGE OF POWER TRANSMISSION LINES Russian patent published in 2020 - IPC G01R31/11 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment and can be used in production of devices for automatic distance estimation to the accident site in transmission lines. Essence: an information signal parameter stabilization unit comprising an information signal amplifier with two negative feedback loops. First noise stabilization circuit is made in form of serial circuit connected to amplifier output signal from peak detector connected by common point to positive power bus, and an amplifier connected through a resistor to the input of the information signal amplifier. Second circuit for stabilizing the amplitude of the information signal is in form of a series circuit of a peak detector connected by a common point to a null power bus, and by an output to an inverting input of the differential amplifier. Potentiometer performing the function of setting device is connected to non-inverting input of differential amplifier. Output of the differential amplifier is connected to an optron connected to the feedback circuit of the information signal amplifier, which controls the amplification factor. Output of the amplifier is connected to the input of the pulse former, the output of which is connected to the "0" input of the trigger, the "1" input of which is connected to the generator of rectangular pulses. Trigger output is connected to the first input of the switch, and the second input is connected to the clock pulse generator. Output of the key is connected to the input of the pulse counter, the output of which is connected to the first input of the adder, to the second input of which the first output of the microcontroller is connected.

EFFECT: high-speed operation and reliability of the device.

1 cl, 4 dwg