Handheld detecting instrument

Abstract

The invention relates to a handheld detecting instrument which comprises a casing. One end of the casing forms a handheld portion, and the other end of the casing is provided with a detecting portion; a battery is arranged in the handheld portion of the casing; a circuit board, a light guiding column and a fixing support are arranged in the detecting portion of the casing; a central processing unit (CPU), an emitting coil, a receiving coil, a light-emitting diode and a buzzing alarm are installed on the circuit board; a liquid crystal display and a control panel are arranged on the outer surface of the detecting portion of the casing; the CPU is a processor with phase detecting and identifying functions; the control panel is electrically connected with the input end of the CPU; the light-emitting diode, the buzzing alarm and the liquid crystal display are electrically connected with the output end of the CPU respectively; the emitting coil is electrically connected with the output end of the CPU through a driving circuit; and the receiving coil is electrically connected with the input end of the CPU through a signal amplifying and shaping circuit. The handheld detecting instrument is precise and reliable in detecting, good in anti-interference capacity, complete in functions, capable of being used for detecting objects such as metal, alternating current, wood beams, plastics and the like.

Description

Technical field: [0001] The invention relates to a detection instrument, in particular to a hand-held detection instrument for detecting objects surrounded in a medium. Background technique: [0002] At present, the existing metal detectors at home and abroad mainly include inductive, capacitive and electromagnetic field metal detectors. Due to their low detection accuracy and weak anti-interference ability, especially capacitive metal detectors are subject to large field interference and the measurement results Distortion, easy to produce false positives and false positives, so the above detectors are only suitable for specific occasions, such as factories and mining industries, and have a single function, only one function of metal detection, unable to detect objects such as alternating current, wooden beams, etc. for improvement. Invention content: [0003] The object of the present invention is to overcome above-mentioned deficiencies in prior art, provide a kind of a...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing metal detectors at home and abroad mainly include inductive, capacitive and electromagnetic field metal detectors. Due to their low detection accuracy and weak anti-interference ability, especially capacitive metal detectors are subject to large field interference and the measurement results Distortion, easy to produce false positives and false positives, so the above detectors are only suitable for specific occasions, such as factories and mining industries, and have a single function, only one function of metal detection, can not detect objects such as alternating current, wooden beams, etc. for improvement

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