Safety detector and safety detection method
By using a magnetic detection front-end circuit and a filtering and amplification circuit in the security scanner, the problems of the security gate's lack of portability and inaccurate detection have been solved, resulting in a lightweight and high-precision portable security scanner.
CN121995500APending Publication Date: 2026-05-08HANGZHOU RAYIN TECH CO LTD
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Patent Information
- Application Number
- CN202411576490.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2026-05-08
AI Technical Summary
Technical Problem
Existing security gates use heavy coil structures, making them unportable and unable to detect small cheating devices, resulting in inaccurate detection results.
Method used
The detection front-end circuit replaces the coil, and the instrumentation amplifier circuit suppresses common-mode noise and the filter amplifier circuit suppresses out-of-band noise. The detection of the target type equipment is achieved through differential filtering and threshold comparison circuit.
Benefits of technology
This technology achieves lightweight portable security scanners, enabling accurate detection of small cheating devices carried on the device, reducing the difficulty of handling and transferring, and improving detection accuracy and signal-to-noise ratio.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a safety detector and a safety detection method, the safety detector comprises a magnetic detection subsystem, and the magnetic detection subsystem comprises a magnetic detection front-end circuit, an instrument amplification circuit, a filter amplification circuit and a threshold comparison circuit; the magnetic detection front-end circuit is used for sensing a first voltage corresponding to the to-be-detected object when the to-be-detected object passes through the safety detector and outputting the first voltage; the instrument amplification circuit is used for performing differential amplification on a second voltage corresponding to the first voltage to obtain a third voltage and outputting the third voltage; the filtering and amplifying circuit is used for filtering the third voltage to obtain a fourth voltage and outputting the fourth voltage; the threshold comparison circuit is used for detecting whether the fourth voltage is in a threshold interval or not; if not, a prompt signal is output, and the prompt signal indicates that the to-be-detected object carries the detection target. According to the technical scheme, the safety detector is high in signal-to-noise ratio and long in detection distance.
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