Method to detect support of power transmission line

FIELD: electricity.

SUBSTANCE: in the method for detection of a power transmission line support a radiolocating signal is emitted with an antenna, a reflected signal is received, the amplitude of the received signal is compared with the threshold value, at the same time scanning is carried out with a directivity pattern in a sector of power transmission line location, the distance D1 is measured by the first received reflected signal, which has exceeded the threshold value, the distance D2 is measured by the second received reflected signal, which has exceeded the threshold value, the absolute value of difference is found between measured distances ΔD=|D1-D2|, the decision on availability of a power transmission line support is made by position of the value ΔD within 0.1K≤ΔD≤K, where K - value of span between supports of a power transmission line.

EFFECT: provision of the possibility to detect a support of a power transmission line when there is no current in its wires.

1 dwg

 

There is a method of detecting electric pylons, which consists in first radiation antenna in the direction of bearing of the radar signal, receiving a reflected from the support signal, comparing the amplitude of a received signal with a threshold value, and the second antenna having a mechanical connection with the first antenna and spatial combined with her pattern, perform receiving and detecting the signal emitted by the wires of the transmission line, the decision about the presence of electric pylons take simultaneous exceed the amplitude of the received signal reflected from the electric pylons, and the detected signal radiated power transmission line wires, the threshold value (RF Patent for invention No. 2410709, m CL G01S 7/32 stranded, publ. 27.01.2011).

A device detection support power lines containing sequentially connected to the first antenna, transmitting a radar signal in the direction of electric pylons and receiving reflected from the support signal, the first mixer, the first intermediate frequency amplifier and the first threshold unit, and the first local oscillator, the output of which is connected to a second input of the first mixer and connected in series to the second antenna, which is the reception, mechanically connected with the first antenna and the within combined with her pattern, the second mixer, the second intermediate frequency amplifier and the second threshold unit and the second local oscillator, the output of which is connected to a second input of the second mixer, the outputs of the first and second threshold blocks are connected respectively with the first and second inputs of the device matches the output of which is the output device (RF Patent for the invention №2410709, m CL G01S 7/32 stranded, publ. 27.01.2011).

A disadvantage of the known method and device is a low probability of detection supports transmission line in the absence of current in the wires of the transmission line.

An object of the invention is the provision of opportunities for discovery supports transmission line in the absence of a current in its wires.

The technical result is achieved in that in the method for detecting electric pylons, which consists in radiating antenna of the radar signal, receiving a reflected signal, comparing the amplitude of a received signal with a threshold value, additionally carry out the scan pattern in a particular sector, measure the distance D1 to the first signal exceeding the threshold value, measure the distance D2 to the second signal exceeding a threshold value, find the absolute value of the difference between the measured distancesthe decision on on the icii electric pylons are accepted by finding the value of ∆ D within C≤AD≤K, where the K - value of the span between supports transmission line.

The detecting device supports transmission line containing consistently connected the antenna, mixer, intermediate frequency amplifier and the first threshold unit and the local oscillator, the output of which is connected to a second input of the mixer further comprises a counter and a decoder, the odd-numbered outputs of which are connected with inputs of the first circuit OR, and even-numbered outputs of the decoder are connected to inputs of the second circuit OR, all outputs of the decoder, except the first, are connected with the inputs of the third circuit OR, and the scanning unit, mechanically coupled with the antenna, the transmitter, the unit of measurement of distance, and the second output of the transmitter connected to the first the input unit of measurement of distance, a second input connected to the output of the first threshold unit, the output unit measurement range is connected with the first inputs of the first and second registers, a second input of the first register is connected to the output of the first circuit OR the second input of the second register is connected to the output of the second circuit OR the third inputs of the first, second register and a second input of the counter is connected with an electric output of the scanning unit, the outputs of the first and second registers are connected to first and second inputs of the subtraction unit, a third input connected to vyhoda the third scheme, OR the output of the subtraction unit is connected to the input of the unit for computing the absolute value, and its output to the input of the second threshold device whose output is the output device.

The drawing shows a functional diagram of the device detection support power lines, where: 1 - antenna, 2 - mixer, 3 - amplifier intermediate frequency, 4, 18 - threshold block, 5 - lo, 6 - block scan 7 - transmitter, 8 - unit measurement range, 9 - count, 10 - decoder, 11, 12, 13 schema, OR, 14, 15 registers, a 16 - block subtraction, 17 - unit finding the absolute value.

The detecting device supports transmission line contains consistently connected the antenna 1, a mixer 2, the intermediate frequency amplifier 3, the first 4 threshold unit, the counter 9 and the decoder 10, the odd-numbered outputs of which are connected with the inputs of the first 11 scheme OR, and even-numbered outputs of the decoder 10 is connected to the second inputs 12 schema OR all outputs of the decoder 10, except the first, are connected with the inputs of the third 13 scheme OR, as well as the local oscillator 5, the output of which is connected to a second input of the mixer 2, the scanner unit 6 is mechanically connected to the antenna 1, the transmitter 7, the unit of measurement of distance is 8, and the second output of the transmitter 7 is connected to the first input unit measurement range 8, a second input connected to the output of the first 4 p the horn unit, the output unit measurement range 8 is connected with the first inputs of the first 14 and second 15 registers, a second input of the first 14 of the register is connected to the first output 11 of the scheme OR, as the second input of the second 15 of the register is connected to the second output 12 of the circuit OR the third inputs of the first 14, 15-second registers and a second input of the counter 9 is connected to the electrical output of the scanning unit 6, the outputs of the first 14 and second 15 registers are connected to first and second inputs of the subtraction unit 16, the third input of which is connected with the third output 13 of the circuit OR the output of the subtraction unit 16 is connected to the input of block calculate the absolute value of 17, and its output to the input of the second threshold device 18 whose output is the output device.

The device operates as follows.

When scanning the airspace chart the direction of the radar device, the scanning unit 6 is mechanically controls the antenna in a predetermined path scanning. First sector scanning of the scanning unit 6 given the signal to reset the counter 9, the first 14 and second 15 registers. The signal reset is supplied to the second input of the counter 9 and the third inputs of the registers. The transmitter 7 generates a pulse signal through the antenna 1 sends them into the air. The transmitter 7 outputs a signal, synchronously with the emitted pulse and signals, at the first input of the computing unit range 8. The reflected signal is received by the antenna 1 is converted, amplified and fed to the input of the first 4 threshold device. If the received signal exceeds the threshold value, which is designed for electric poles, then the output of the first threshold device 4, a signal occurs. This signal is applied to the measurement unit, range 8, and the counter 9. The output signal from the counter is supplied to the decoder 10, at the first output of the decoder 10, a signal is generated. The output of the decoder 10 has two output groups. The first group consists of the outputs, with odd numbers, the second group is even. Thus, with the first group of outputs of the decoder 10, the signal at the first input 11 of the circuit OR. With the release of the first 11 circuit OR the signal at the second input (input record) of the first 14 of the register, to the first input of which has already received a signal proportional to the distance to the support, with the unit of measurement of distance is 8. When the presence of a signal on the second input of the first 15 register provides a record of information about the distance to the first bearing in the first 15 to register. Upon further scanning at the output of the first 4 threshold unit 4 again, you may receive the signal which is also fed to the second input unit measurement range 8 and to the input of the counter 9. From the output of the counter 9, the signal is sent to the decoder 10. When the volume on the second output of the decoder 10, a signal is generated. This signal through a second group of outputs of the decoder 10 is supplied to the second input 12 of the circuit OR, and with its output to the second input (input record) 15 second register to the first input of which has already received a signal from the measurement unit, range 8. When this signal proportional to range, is recorded at 15 second register. The output signal of the first 14 and second 15 registers are received at first and second inputs of the subtraction unit 16. The third input (control input) signal from the third output 13 of the circuit OR. The signal at the third output 13 of the circuit OR in the presence of a signal on at least one of the outputs of the decoder 10, except the first. The presence of a signal on the third input of the subtraction unit 16 initiates his work. A signal proportional to the difference of the distances, from the output of the subtraction unit 16 via the unit by finding the absolute value of 17 is supplied to the second threshold device 18. If the values of ∆ D is within K≤ ∆ D≤K, then this means that a radiopaque object is the electricity pylon.

The way to detect electric pylons, which consists in radiating antenna of the radar signal, receiving a reflected signal, comparing the amplitude of a received signal with a threshold value, characterized in that you are doing the scanning pattern in the sector location of the transmission line to measure the relevance of D1 on the first taken to the reflected signal, exceeding the threshold value, measure the distance D2 adopted on the second signal exceeding a threshold value, find the absolute value of the difference between the measured distances ∆ D=|D1-D2|, the decision on whether electric pylons are accepted by finding the value of ∆ D within 0.1K≤ ∆ D≤K, where K is the magnitude of the span between supports transmission line.



 

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