A device and method for locating underground pipelines based on complementary gray codes

A technology for underground pipelines and positioning devices, applied in the field of geophysical exploration, can solve the problems of low detection rate of non-metallic pipelines, and achieve the effects of no blind zone detection, high pulse compression gain, and increased total energy

Active Publication Date: 2019-01-22
山西润泽丰科技股份有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide an underground pipeline positioning device and method based on complementary Gray codes to improve the signal-to-noise ratio of existing ground-penetrating radars and solve the technical problem of low detection rate of non-metallic pipelines in the prior art

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  • A device and method for locating underground pipelines based on complementary gray codes
  • A device and method for locating underground pipelines based on complementary gray codes
  • A device and method for locating underground pipelines based on complementary gray codes

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Embodiment Construction

[0024] The specific mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] An underground pipeline positioning device based on complementary Gray codes, such as figure 1 As shown, it includes a code converter 1, a complementary Gray code generating device 2, a power divider 3, a first amplifier 4, a transmitting antenna 5a, a receiving antenna 5b, an adjustable electric delay line 6, a second amplifier 7, and a signal acquisition device 8 , a trigger control device 9 , a signal processing storage device 10 , a GPS device 11 , a photoelectric speed sensor 12 , and a display device 13 .

[0026] The code A generated by the complementary Gray code generation device 2 is controlled by the encoder converter 1 as a detection signal; the detection signal is divided into a detection signal and a reference signal by a power divider 3; the reference signal passes through an adjustable electric delay line 6 to ensure that the...

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Abstract

The present invention relates to the geophysical exploration field, specially to a device and method of underground pipeline positioning device based on complementation Gray codes. The device comprises an encoding converter, a complementation Gray code generation device, a power divider, a first amplifier, an emission antenna, a receiving antenna, a second amplifier, an adjustable electric delay line, an photoelectric signal collection device, a speed sensor, a triggering control device, a GPS device, a signal processing storage device and a display device. A complementation Gray code A and a complementation Gray codes used at the same measurement point are taken as detection signals, the related information obtained through twice detection is added so as to substantially improve the signal to noise ratio of the system.

Description

technical field [0001] The invention relates to the field of geophysical exploration, in particular to an underground pipeline positioning device and method based on complementary Gray codes. Background technique [0002] Underground pipelines are the material basis for the survival and development of cities, and are called the "lifelines" of cities. With the construction and development of urbanization, the types and quantities of underground pipelines are increasing rapidly, and various pipelines are criss-crossing all over the city. However, due to the influence of errors, leaks and large deviations in the data of underground pipelines, the distribution of underground pipelines was misjudged, which led to frequent accidents during the construction process. Therefore, the detection of underground pipelines has become an essential part of urban underground engineering construction. [0003] Among the existing pipeline detection methods, ground penetrating radar detects pi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/17G01S13/88
CPCG01S13/885G01V3/17
Inventor 李静霞刘丽王冰洁张建国徐航王云才
Owner 山西润泽丰科技股份有限公司
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