Intelligent pipeline positioning device and method based on coded signal

A technology for coding signals and intelligent pipes, which is applied in measurement devices, seismic signal processing, seismic signal receivers, etc., to achieve the effects of long detection distance, high signal-to-noise ratio, and improved accuracy and reliability

Inactive Publication Date: 2020-01-10
WUHAN ENG SCI & TECH RESINST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Such instruments are useless in pipeline

Method used

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  • Intelligent pipeline positioning device and method based on coded signal
  • Intelligent pipeline positioning device and method based on coded signal

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0021] Such as figure 1 and 2 The shown intelligent pipeline positioning device based on coded signals includes a signal transmitter 1 and a signal receiver 2, the signal transmitter 1 includes an encoder 1.1, a signal amplifier 1.2, an audio oscillator 1.3, and the signal receiver 2 Including a vibration signal sensor 2.1, an analog-to-digital converter 2.2, and a signal processor 2.3, the encoder 1.1 is used to generate an acoustic coded signal (Chirp coded signal);

[0022] The signal amplifier 1.2 is used to amplify the power of the acoustic coded signal. The degree of power amplification is related to the distance between the detection point and the signal transmitter, and the density of the soil medium above the buried pipeline. Generally, the farther the receiver is from the transmitter , the looser the soil medium above the pipeline, t...

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Abstract

The invention discloses an intelligent pipeline positioning device based on a coded signal. The device comprises a signal transmitter and a signal receiver. The signal transmitter comprises an encoder, a signal amplifier and an audio oscillator. The signal receiver comprises a vibration signal sensor, an analog-to-digital converter and a signal processor. An encodable signal with moderate frequency and outstanding autocorrelation characteristics is finally converted into a sound wave signal by means of a power amplifier, by controlling parameters such as the frequency of the encodable signal,the receiver can perform accurate analysis by means of various post-processing methods, information implied in the received signal can be extracted more easily, and technicians can judge the signal transmitted by the transmitter more reliably by means of a related analysis method more conveniently. According to the device, the signal propagation distance is greatly improved, and the accuracy and reliability of data interpretation by the technicians are improved.

Description

technical field [0001] The invention relates to the technical field of urban pipeline detection, in particular to an intelligent pipeline positioning device and method based on coded signals. Background technique [0002] Underground pipelines are an important part of urban infrastructure, and also the lifeline for the survival and development of cities. With the development of science and technology, the material of urban underground pipelines is also constantly changing. In the past, a large number of metal pipelines were used, but now in various pipeline networks such as water supply, drainage, gas, heat, industry, oil and gas, plastic (polyethylene PE The application of non-metallic pipelines such as pipes, polyvinyl chloride PVC pipes, etc.), ceramics, and concrete is becoming more and more popular. Because these non-metallic pipelines have the advantages of strong pollution resistance, light weight, low cost, not easy to corrode, easy to bury and maintain, etc., they ...

Claims

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Application Information

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IPC IPC(8): G01V1/04G01V1/18G01V1/36G01V1/30
CPCG01V1/04G01V1/18G01V1/30G01V1/36G01V2210/121G01V2210/1425
Inventor 叶辉金彦周超刘玉
Owner WUHAN ENG SCI & TECH RESINST
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