Petroleum leakage radar detecting system based on linear frequency modulation signal system

A chirp signal and radar detection technology, applied in the field of ground penetrating radar, can solve the problem of no imaging, etc., and achieve the effect of easy implementation and simple equipment structure

Inactive Publication Date: 2015-05-20
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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Problems solved by technology

At present, the radar works in the near-field mode, which basically focuses on detection and has no imaging function.

Method used

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  • Petroleum leakage radar detecting system based on linear frequency modulation signal system
  • Petroleum leakage radar detecting system based on linear frequency modulation signal system
  • Petroleum leakage radar detecting system based on linear frequency modulation signal system

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Embodiment Construction

[0022] The design principle of the radar detection system for oil spill and oil leakage based on the chirp signal system: after the chirp signal is transmitted through the radar transmitting channel, after passing through the oil pipeline, it is received by the radar receiving channel. The oblique radar receiving method is adopted to reduce the requirement of AD sampling in the signal acquisition unit, and the imaging of the oil leakage area is realized by the method of frequency domain imaging, and the detection of the oil leakage area is realized by the method of threshold comparison, and finally the computer imaging is performed. Display, the oil leakage area of ​​the oil pipeline can be observed intuitively.

[0023] Based on the above principles, the following system is designed:

[0024] like figure 1 As shown, the hardware equipment of the system mainly includes a radar transmitting channel 1, a radar receiving channel 2, a signal production and acquisition system 3 an...

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Abstract

The invention relates to the technical field of ground penetrating radars, in particular to a petroleum leakage radar detecting system based on a linear frequency modulation signal system. The radar detecting system is characterized in that a signal generating end of a signal generating and acquisition system is communicated with a radar transmitting channel, a signal acquisition end of the signal generating and acquisition system is communicated with a radar receiving channel, and the signal generating and acquisition system is communicated with a computer by a USB (Universal Serial Bus) interface and serial ports; radar signals are generated by the signal generating and acquisition system and transmitted by the radar transmitting channel, and the signals are received by the radar receiving channel after passing through a petroleum pipeline and sent to the signal generating and acquisition system again; and the received signals are sent to the computer by the signal generating and acquisition system to be immediately processed, and image processing is carried out in combination with the signals by application software in the computer. The oil leakage of the petroleum pipeline can be detected by the system through the utilization of the bigger absorptivity of petroleum to electromagnetic waves compared with dry soil and the utilization of the variation amplitude detection of the imaged petroleum pipeline.

Description

technical field [0001] The invention relates to the technical field of ground penetrating radar, and relates to a radar detection system for oil leakage and oil leakage based on a linear frequency modulation signal system. Background technique [0002] In recent years, radar near-field detection technology has gradually become one of the hot issues in radar application research due to the traction of demand. Near-field radar can be used in different occasions, such as wall penetration detection, mine detection, highway non-destructive testing, and underground bunker detection. and archaeological digs. At present, the radar works in the near-field mode, which is basically based on detection, and has no imaging function. [0003] With the rapid development of the domestic economy in recent years, oil pipeline transportation has also developed rapidly. As of 2008, the total length of oil and natural gas pipelines of oil companies such as PetroChina and Sinopec has exceeded 50...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89G01S7/28F17D5/02
Inventor 高瑞民刘立李建东刘杰杨志刚何飞张世君张永强尹志福方晓君朱世东王珂
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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