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A method and device for underwater metal shape detection based on the principle of active electric field

The technology of a detection device and detection method, which is applied in the field of metal detection, can solve the problems of not being able to detect metal shapes, etc., and achieve the effects of saving detection time, high detection efficiency and simple structure

Active Publication Date: 2020-02-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this detection method can only realize the detection of underwater metals and judge the type of metals, and does not have the ability to detect the shape of metals.

Method used

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  • A method and device for underwater metal shape detection based on the principle of active electric field
  • A method and device for underwater metal shape detection based on the principle of active electric field
  • A method and device for underwater metal shape detection based on the principle of active electric field

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Embodiment 1

[0039] An underwater metal shape detection device according to an exemplary embodiment of the present invention, such as figure 2 As shown, it includes a detection device and a control device, and the detection device includes four electrodes, wherein the material of the electrodes is not limited (a metal titanium wire is used in this example), which are two transmitting electrodes and two receiving electrodes respectively. The transmitting electrode is used to transmit the excitation signal and establish the detection electric field; the receiving electrode is used to receive the signal. The control device is a PC with signal and data processing capabilities, and the detection device and the control device can be connected in a wired or wireless manner. In addition, in a specific test, the conductivity of the water body should be guaranteed to be a fixed value. The conductivity of the water body here has been measured to be 340uS / cm, and the amplitude of the excitation signa...

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Abstract

The invention discloses an underwater metal shape detecting method and device based on the principle of an active electric field. The metal shape detecting method and device provided by the inventionare based on an active electric field detecting technology; a metal object is omnidirectionally detected from different angles by an underwater active electric field; the collected electric field information is processed to obtain the corner frequency of the object in different directions and is further processed to determine the shape of the metal object. The method can overcome the influence ofmany complicated factors such as a dim and turbid underwater environment and has simple operation and wide application range; meanwhile, the hardware structure required by the method is simple and miniaturized. The method is suitable for a liquid having a conductive property and has a good effect on shape detection of the metal object in the liquid environment.

Description

technical field [0001] The invention relates to the field of metal detection, in particular to an underwater metal shape detection method and device based on the principle of an active electric field. Background technique [0002] Metal detection has a wide range of applications and plays an important role in medical, construction, materials, archaeology, security, etc. From the original signal analog technology to continuous wave technology, and then to the digital pulse counting used today, metal detectors have made a qualitative leap. The current metal detection, according to the principle of metal detection, can be divided into: detection based on the principle of electromagnetic induction, detection based on the principle of ultrasonic waves and detection technology based on the principle of photoelectricity. According to the actual application scenarios, it can be divided into: magnetic / conductive metal detectors used in industry, safe metal detectors, etc. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08G01B7/28
CPCG01B7/28G01V3/08
Inventor 彭杰钢苏新铎欧斌王颖利邹地长李可
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA