Waveform detection method based on metal detection
A waveform detection and metal detection technology, applied in the field of metal detection, can solve problems such as unstable performance and low sensitivity, and achieve the effect of eliminating weak and blind areas and high efficiency
Inactive Publication Date: 2018-08-17
李法利
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Problems solved by technology
However, the existing gates or security gates have certain detection blind spots and weak spots, and the sensitivity is not high, and the performance is not stable enough.
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[0023] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0024] The metal detection-based waveform detection method provided by the embodiment of the present invention can be implemented in the detection of various security inspection equipment, and is used to detect whether an object passing through the security inspection equipment is a metal product. figure 1 The method flowchart of the waveform detection method based on metal detection provided by the embodiment of the present invention, such as figure 1 As shown, the waveform detection method based on metal detection provided by the embodiment of the present invention includes the following steps.
[0025] Step 110, the control unit sends an alternating current to the excitation coil according to the user's start command;
[0026] Specifically, the control unit can be understood as a set of control circuits, responsibl...
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An embodiment of the present invention relates to a waveform detection method based on metal detection. The method comprises the steps that: a control unit outputs an alternating current to an excitation coil according to a start command, the excitation coil outputs an excitation voltage to an induction coil group according to the alternating current, the induction coil group is arranged on the excitation coil and outputs an electromagnetic field according to the excitation voltage, the electromagnetic field changes when a metal object passes through the induction coil group, the induction coil group generates a detection current according to the changed electromagnetic field and sends an electric measurement current to the control unit, and the control unit analyzes the detection current,generates a prompt according to an analysis result and displays the display result. The embodiment of the present invention provides the waveform detection method based on metal detection, the carrying position of a detected object can be accurately judged, a weak area and a blind area in a detection area are eliminated, and thereby the efficiency of the metal detection is higher.
Description
technical field [0001] The invention relates to the technical field of metal detection, in particular to a waveform detection method based on metal detection. Background technique [0002] With the development of society, people pay more and more attention to safety issues. Whether it is airports, stations, subways, immigration, courts, prisons, drug rehabilitation centers, detention centers, hospitals, schools, large performance venues, important international conferences, international exhibitions, etc., security checks for visitors are essential. The so-called security inspection is to check whether passengers or audiences carry guns, knives, ammunition and inflammable and explosive dangerous goods through certain technical means and facilities, so as to intercept possible safety hazards and prevent violent crimes or accidents. [0003] Existing security inspection devices generally use hand-held detectors to check visitors one by one, and the efficiency of security insp...
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IPC IPC(8): G01V3/11
CPCG01V3/10
Inventor 李法利
Owner 李法利