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Hand-held specific metal detector

A metal detector and hand-held technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of low security inspection efficiency, high labor intensity of security inspection personnel, blockage, etc., achieve low false positives, rapid detection, and improve detection efficiency Effect

Inactive Publication Date: 2016-08-24
DATONG KUAIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this detection method leads to very low efficiency of security inspection; on the other hand, it causes the labor intensity of security personnel to be extremely high, and it will also cause problems such as blockage when used in places with a large flow of people.

Method used

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, this patent is described further. The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, some components in the accompanying drawings will be omitted, enlarged or reduced; for those skilled in the art, certain parts in the accompanying drawings It is understandable that some well-known structures and descriptions thereof may be omitted.

[0021] Such as figure 1 and figure 2The hand-held specific metal detector shown includes a housing and a detection coil installed in the housing, a control chip, an alarm unit, a signal generating circuit, a signal collecting circuit, buttons and a power supply. The signal generating circuit includes sequentially connected first A filter circuit, a shaping circuit, a first amplifier circuit and a drive circuit, the signal acquisition circuit includes a frequency selection pr...

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Abstract

The invention relates to a hand-held specific metal detector comprising a housing, a detection coil, a control chip, an alarm unit, a signal generator circuit, a signal acquisition circuit, a key and a power supply. The detection coil, the control chip, the alarm unit, the signal generator circuit, the signal acquisition circuit, the key and the power supply are installed in the housing. A detection zone, a part zone, and a handle zone that are connected mutually are formed in the housing. The detection coil arranged in the detection zone includes a large coil and a small coil, wherein the coils have different structures and are arranged in a same plane. According to the invention, the detection coil is configured to have the large coil and the small coil that have different structures and a detection magnetic field covering the detection area is formed by using two different coils; because different kinds of metal materials generate different secondary magnetic fields in the detection magnetic field due to eddies, the two coils receive inductive current signals of the secondary magnetic fields and transmit the signals to a control chip; and the control chip carries out selective alarming according to specific electric signals. Therefore, alarming of a certain metal material or several kinds of specific metal materials is realized.

Description

technical field [0001] The invention relates to the technical field of security inspection equipment, in particular to a hand-held specific metal detector for specific metal alarms. Background technique [0002] As a commonly used security equipment, hand-held metal detectors are widely used in airports, stations, customs, courts and other public places to detect metal objects hidden on the human body. Handheld metal detectors are mainly used in the detection of prohibited metal objects in public safety places, such as controlling knives and firearms, etc., to prevent violent attacks; while in some special occasions such as factories, factories and mines, it is mainly for a specific metal, such as Gold, silver, copper, etc., to prevent the loss of precious metal products. Hand-held metal detectors use the principle of electromagnetic induction to generate a magnetic field through the electromagnetic transmitting coil in the detector housing. When there is a metal object in ...

Claims

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Application Information

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IPC IPC(8): G01V3/11
CPCG01V3/10
Inventor 于曙红孟绍锋朱文斌陈荣
Owner DATONG KUAIAN TECH CO LTD
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