金属探测器——脉冲感应·高灵敏度·全防水设计·声光报警手持式金属武器与违禁品搜查仪（反恐安检/刑事技术勘查/监所查控核心装备）

 

金属探测器——脉冲感应·高灵敏度·全防水设计·声光报警手持式金属武器与违禁品搜查仪（反恐安检/刑事技术勘查/监所查控核心装备）

〖重要合规前置声明〗 本产品为国家管制类反恐防爆安检与刑事技术专用特种装备，仅面向具备法定执法权限的各级公安机关、特警反恐部门、武警部队、人民法院、人民检察院、司法行政机关、海关、民航铁路安检部门及授权执法与安全保卫单位定向研发、生产与供应，严禁向任何个人、无资质企业及非授权单位销售或提供。本设备的购置、配备、使用与管理，必须严格遵守《中华人民共和国反恐怖主义法》《中华人民共和国治安管理处罚法》及国家关于警用装备管理、公共安全检查的相关法律法规与行业技术标准，必须由经过专业培训、取得相应安检或执法岗位资质的人员规范操作，严禁无资质单位和个人违规购置、使用、转让本装备，严禁在无法定授权的情况下对他人进行人身搜查，严禁将本设备用于法定安检勤务之外的任何用途。

产品概述

金属探测器——脉冲感应·高灵敏度·全防水设计·声光报警手持式金属武器与违禁品搜查仪（亦称手持式金属探测器、脉冲感应金属探测仪）是一款基于脉冲感应技术的便携式高灵敏度金属探测装备，属于反恐防爆安检、刑事技术现场勘查及监所违禁品查控领域的核心手持式搜查设备。该产品采用全防水设计，可在雨雪天气及水下环境中正常使用，配合声光同步报警模式，专为在人员安检、刑事勘查及监所管理中快速发现隐藏在衣物内、包裹中或地面浅层下的小型金属武器、管制刀具、金属作案工具、电子设备及金属物证深度定制，完美适配机场车站人员安检、大型活动入口安全筛查、监狱看守所人身及物品检查、犯罪现场金属物证搜索及水域打捞金属物品定位等多种专业执法场景。系统以脉冲感应技术为核心，发射短暂而强力的电磁脉冲，通过分析金属涡流衰减时间常数来判定金属目标的存在，具备优异的抗矿化干扰能力，从根本上解决了传统甚低频探测器在湿沙、海水等高矿化度环境中因相位偏移导致连续误报甚至完全失效的技术难题，能够为一线安检及执法人员提供“全场景防水高可靠、脉冲感应抗干扰、高灵敏度精准定位、声光同步即时报警” 的金属违禁品快速筛查能力，是构建公共安全入口防线与保障执法搜查效率的基础性关键装备。

技术原理

该探测器基于脉冲感应金属检测技术原理工作。设备内部发射线圈以一定频率向周围空间发射短暂而强力的电磁脉冲，每个脉冲在发射瞬间在线圈周围建立一次强磁场，脉冲结束后磁场急剧衰减。若线圈附近存在金属物体，衰减磁场在金属内部感应出涡电流，涡流继而在脉冲间隙期间产生一个持续时间较长的次级磁场，被接收线圈捕获并转换为电信号。由于涡流的衰减速率取决于金属的电导率与磁导率——不同金属（如铁、铜、铝、银、金）具有明显差异的衰减曲线——设备通过分析次级磁场的衰减时间常数，可有效区分不同类型金属目标。相较于传统甚低频（VLF）探测器，脉冲感应技术天然免疫于水体盐度与矿化背景的导电性干扰，使其在湿沙、海水、高矿化度滩涂及各类复杂土壤环境中均能保持稳定的探测信噪比，不会因环境介质导电性变化而产生连续误报或灵敏度骤降。

设备支持灵敏度多级可调，操作者可根据任务需求——如安检通道需快速筛查较大金属武器、刑事勘查需定位微小金属物证碎片——灵活设定检测阈值。当金属物体进入探测范围时，设备以声光同步方式即时报警：高分贝蜂鸣器确保嘈杂环境中亦可辨识，高亮度LED指示灯辅助光线昏暗条件下的报警确认。整机采用全防水密封结构设计，可在雨雪天气及短时水下浸泡环境中正常工作，适应从室内安检到野外水域搜索的全场景执法需求。手柄符合人体工学设计，长时间持握不疲劳。

核心功能与合规实战价值

脉冲感应高灵敏度与全场景防水抗干扰，满足从常规安检到恶劣环境搜查的广域应用需求
设备采用脉冲感应技术，检测灵敏度可根据任务需求多级调节，在最高灵敏度下可有效探测小型金属武器、管制刀具、金属作案工具及电子设备等违禁品。脉冲感应原理使其天然免疫于湿沙、海水、高矿化度土壤等复杂介质环境的导电性干扰，在高盐度海港、雨雪泥泞地面及矿化反应强烈的特殊地质区域均能保持稳定可靠的探测性能。整机采用全防水密封结构设计，在短时水下浸泡条件下仍可正常工作，满足水域打捞金属物证、水下安检排查等特殊场景的专业需求。该全场景抗干扰能力使本设备从常规室内安检到野外恶劣环境搜查均可适用，从装备功能层面全面保障了执法搜查工作的连续性与可靠性。

声光同步即时报警与人性化操作设计，支撑高强度安检勤务中的快速响应与持续作业
设备以高分贝蜂鸣器与高亮度LED指示灯同步输出报警信号，确保在嘈杂的安检大厅或光线昏暗的室外现场均可第一时间感知报警信息。手柄采用人体工学设计，轻量化结构配合防滑握持面，在长时间、高强度的连续安检勤务中保持操作者手部舒适，不产生过度疲劳。操作界面简洁直观——开机自检、灵敏度调节、报警指示均为单一按键或旋钮操作，非专业背景的安检人员经短期培训即可独立上岗。该人性化交互设计从操作层面全面支持了大型活动、交通枢纽等需部署大量安检人员的场景中对装备易用性与可靠性的高标准要求。

合规应用场景

机场、车站及大型活动入口的人员安检与金属违禁品筛查场景
在机场航站楼、高铁站、地铁换乘站及大型体育赛事、政治会议的安检通道，安检人员使用本探测器对通过金属探测门触发报警或随机抽检的人员进行快速复检定位。探测器的高灵敏度与声光同步报警功能帮助安检人员在数秒内精准锁定藏匿金属物品的具体部位，有效筛查刀具、枪支金属部件、雷管等危险违禁品，满足民航安检规则及大型活动安保工作规范对人身安检手段的配备要求。

监狱、看守所及强戒所的人身与物品日常查控场景
在监管场所的收押入口、会见通道及重点监区出入口，执勤干警使用本探测器对进出人员及带入物品进行金属违禁品专项查验，重点筛查在押人员可能私藏的金属刃器、自制开锁工具、手机、打火机等违禁物品。设备的高灵敏度模式可探测微小金属物，有效弥补传统金属探测门在重点部位复检中的功能盲区，满足司法行政机关对监所安全管理的常态化装备需求。

刑事犯罪现场的金属物证搜索与水域打捞场景
在命案、盗窃、涉枪涉爆等刑事案件的现场勘查中，勘查人员使用本探测器在中心现场及外围区域进行地毯式金属物证搜索——包括弹壳、弹头、刀具、金属工具碎片、手机、钥匙等。在涉及水域抛尸或丢弃作案工具的案件中，设备的全防水设计使其可在浅水区域进行水下金属物证搜索与定位，为潜水打捞提供精确的目标指引。

核心技术参数

检测原理方面，设备基于脉冲感应金属检测技术，发射短暂强力电磁脉冲，通过分析金属涡流衰减时间常数进行目标检测与区分。灵敏度方面，支持多级可调，最高灵敏度下可探测小型金属武器及金属物证碎片。报警方式方面，配备声光同步报警——高分贝蜂鸣器与高亮度LED指示灯同步触发，确保在各种环境下均可即时感知报警信息。环境适应性方面，采用全防水密封结构设计，可在雨雪天气及短时水下浸泡环境中正常工作，在湿沙、海水、高矿化度土壤等复杂介质中保持稳定探测性能，不受环境导电性变化干扰。操作特性方面，手柄采用人体工学设计，轻量化结构，操作界面简洁直观，单键或单旋钮控制开关机与灵敏度调节。

合规实战应用案例

某市中级人民法院在审理一宗涉黑案件期间，因被告人人数众多且多名被告人具有暴力倾向，法院安检通道面临极高的安全风险管控压力。法警大队在审判庭入口增配多把本金属探测器，对所有进入法庭人员实施安检门报警后的快速复检。一名旁听人员通过固定安检门时腰部触发报警，法警使用探测器绕其腰间进行非接触扫描，精准定位至腰带内侧藏匿的一把小型金属折叠刀，当场予以收缴并对该人员实施劝离，避免了潜在的安全威胁。整个复检过程未发生肢体接触，全程文明规范，保障了庭审秩序及司法权威。

某市公安机关在侦办一起系列盗窃电缆案件时，技术勘查人员在案发现场的草丛及泥土中搜索嫌疑人可能遗留的作案工具碎片。勘查人员使用本探测器以最高灵敏度模式对中心现场及周边区域进行地毯式搜索，在距剪断电缆点约十米处的草丛中发现埋藏在浅层泥土下的一枚断裂的剪切工具刀片。经与后续抓获的嫌疑人处起获的钳剪工具进行断口比对，认定该刀片系从该工具上断裂脱落，成为认定嫌疑人使用该工具实施盗窃的关键物证。本案中探测器的高灵敏度与抗矿化干扰能力为在复杂野外土壤环境中发现微小金属物证提供了可靠的技术支持。

厂家信息：北京毕思特联合科技有限公司
网址：https://www.bestlh.com
地址：北京市亦庄开发区经海六路一号院尖子班 C9 独栋
电话：010-56526048

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Metal Detector — Pulse Induction · High Sensitivity · Fully Waterproof Design · Audible/Visual Alarm Handheld Metal Weapon & Contraband Search Instrument (Core Equipment for Counter-Terrorism Security Screening / Criminal Technical Investigation / Correctional Facility Contraband Control)

Global site URL：https://xilankeji.en.alibaba.com

〖Important Compliance Precaution〗 This product is a state-controlled specialized equipment for counter-terrorism EOD security screening and criminal technology, which is solely developed, produced and supplied to authorized law enforcement agencies such as public security organs, special police counter-terrorism units, armed police forces, people's courts, people's procuratorates, judicial administrative organs, customs, civil aviation and railway security screening authorities, and authorized enforcement and security protection units with statutory law enforcement authority. Any sale or supply to individuals, non-qualified enterprises and unauthorized units is strictly prohibited. The procurement, deployment, use and management of this equipment must strictly comply with the Anti-Terrorism Law of the People's Republic of China, the Public Security Administration Punishments Law of the People's Republic of China, and national laws, regulations and industrial technical standards regarding police equipment management and public security screening. Operation must be carried out exclusively by professionally trained personnel holding corresponding security screening or law enforcement post qualifications. Unauthorized units and individuals are strictly forbidden from purchasing, using or transferring this equipment. Conducting personal searches on individuals without statutory authorization, or using this equipment for any purpose other than statutory security screening duties, is strictly prohibited.

Product Overview

The Metal Detector — Pulse Induction, High Sensitivity, Fully Waterproof Design, Audible/Visual Alarm Handheld Metal Weapon & Contraband Search Instrument (also referred to as the Handheld Metal Detector or Pulse Induction Metal Detector) is a portable, high-sensitivity metal detection device based on pulse induction technology. It constitutes a core handheld search device in the fields of counter-terrorism EOD security screening, criminal technical scene investigation, and correctional facility contraband control. This product features a fully waterproof design, enabling normal operation in rain, snow, and underwater environments. Combined with a synchronous audible and visual alarm mode, it is deeply customized for the rapid detection of small metal weapons, controlled knives, metal crime tools, electronic devices, and metal evidence concealed in clothing, packages, or shallow underground layers during personnel security checks, criminal investigations, and correctional facility management. It perfectly adapts to various professional law enforcement scenarios, including personnel screening at airports and railway stations, security screening at large event entrances, personal and property inspections in prisons and detention centers, metal evidence searches at crime scenes, and the localization of metal objects during underwater salvage operations. At its core, the system employs pulse induction technology, emitting brief yet powerful electromagnetic pulses and determining the presence of a metal target by analyzing the eddy current decay time constant. This provides it with excellent resistance to mineralization interference. This fundamentally resolves the technical problem of traditional very-low-frequency detectors suffering from continuous false alarms or even complete failure in high-conductivity media such as wet sand and seawater due to phase shifts. It provides frontline security screening and law enforcement personnel with "full-scene waterproof high reliability, pulse induction anti-interference, high-sensitivity precise positioning, and synchronous audible and visual instant alarm" rapid metal contraband screening capability. It is a foundational and critical piece of equipment for constructing a public safety entrance defense line and ensuring the efficiency of law enforcement searches.

Technical Principle

This detector operates based on the principle of pulse induction metal detection technology. The internal transmitter coil of the device emits brief, powerful electromagnetic pulses into the surrounding space at a certain frequency. Each pulse establishes a strong magnetic field around the coil at the moment of emission, which rapidly decays after the pulse ends. If a metallic object is present near the coil, the decaying magnetic field induces eddy currents within the metal. These eddy currents, in turn, generate a longer-lasting secondary magnetic field during the interval between pulses, which is captured by the receiver coil and converted into an electrical signal. Since the decay rate of the eddy currents depends on the metal's electrical conductivity and magnetic permeability—different metals (such as iron, copper, aluminum, silver, and gold) exhibit distinctly different decay curves—the device can effectively distinguish between different types of metal targets by analyzing the decay time constant of the secondary magnetic field. Compared to traditional Very Low Frequency (VLF) detectors, pulse induction technology is inherently immune to the conductivity interference of water salinity and mineralization backgrounds, enabling it to maintain a stable detection signal-to-noise ratio in wet sand, seawater, highly mineralized intertidal zones, and various complex soil environments without generating continuous false alarms or sudden drops in sensitivity due to changes in the electrical conductivity of the environmental medium.

The device supports multi-level adjustable sensitivity. The operator can flexibly set the detection threshold based on mission requirements—such as rapidly screening for larger metal weapons in security checkpoints or locating minute metal evidence fragments in criminal investigations. When a metallic object enters the detection range, the device issues an instant alarm via synchronous audible and visual signals: a high-decibel buzzer ensures audibility in noisy environments, while a high-brightness LED indicator assists in alarm confirmation under dim lighting conditions. The entire unit features a fully waterproof sealed structure design, allowing normal operation in rainy or snowy weather and even brief underwater immersion, adapting to full-scene law enforcement needs from indoor security screening to open water field searches. The handle is ergonomically designed for comfortable long-duration grip without fatigue.

Core Functions and Compliance Operational Value

High-Sensitivity Pulse Induction and Full-Scene Waterproof Anti-Interference, Meeting Wide-Area Application Needs from Routine Security Screening to Harsh Environment Searches
The device employs pulse induction technology, with detection sensitivity adjustable across multiple levels based on mission requirements. At its highest sensitivity, it can effectively detect small metal weapons, controlled knives, metal crime tools, electronic devices, and other contraband. The pulse induction principle makes it inherently immune to conductivity interference from complex media environments such as wet sand, seawater, and highly mineralized soil. It maintains stable and reliable detection performance in high-salinity harbors, rainy and muddy ground, and special geological areas with strong mineralization reactions. The entire unit features a fully waterproof sealed structure design, enabling normal operation even under brief underwater immersion, meeting the professional needs of special scenarios such as salvaging metal evidence from water and underwater security screening. This full-scene anti-interference capability makes the device applicable from routine indoor security screening to harsh outdoor field searches, comprehensively ensuring the continuity and reliability of law enforcement search operations from the equipment functionality level.

Synchronous Audible and Visual Instant Alarm and Ergonomic Operation Design, Supporting Rapid Response and Sustained Operation in High-Intensity Security Screening Duties
The device outputs alarm signals synchronously via a high-decibel buzzer and a high-brightness LED indicator, ensuring that the alarm information is perceived instantly in noisy security screening halls or dimly lit outdoor scenes. The handle features an ergonomic design, with a lightweight structure and an anti-slip grip surface, maintaining operator hand comfort and preventing excessive fatigue during prolonged, high-intensity continuous security screening duties. The operation interface is straightforward and intuitive—power-on self-test, sensitivity adjustment, and alarm indication are all controlled by a single button or knob, allowing security personnel without a professional background to independently perform duties after short-term training. This user-friendly interactive design, from the operational level, fully supports the high-standard requirements for equipment usability and reliability in scenarios requiring the deployment of a large number of security personnel, such as large-scale events and transportation hubs.

Compliant Application Scenarios

Personnel Screening and Metal Contraband Detection Scenario at Airports, Stations, and Large Event Entrances
At the security screening checkpoints of airport terminals, high-speed railway stations, subway transfer stations, and large sports events and political conferences, security personnel use this detector to perform rapid secondary inspection and localization on individuals who triggered the walk-through metal detector alarm or were selected for random checks. The detector's high sensitivity and synchronous audible and visual alarm function help security personnel accurately pinpoint the specific location of concealed metal objects within seconds, effectively screening for hazardous contraband such as knives, firearm metal components, and detonators. This meets the equipment requirements for personal security screening methods stipulated in civil aviation security screening rules and major event security work standards.

Routine Personal and Property Contraband Control Scenario in Prisons, Detention Centers, and Compulsory Rehabilitation Centers
At the intake entrances, visitor passageways, and key block entrances of correctional facilities, duty officers use this detector to conduct specialized metal contraband inspections on individuals entering and exiting and items being brought in or out. The focus is on screening for metal blades, self-made lock-picking tools, mobile phones, lighters, and other prohibited items that inmates may attempt to conceal. The device's high-sensitivity mode can detect minute metal objects, effectively filling the functional blind spot of traditional walk-through metal detectors in the secondary inspection of key areas. This meets the routine equipment requirements of judicial administrative organs for correctional facility security management.

Metal Evidence Search and Underwater Salvage Scenario at Criminal Crime Scenes
During the scene investigation of criminal cases such as homicide, theft, and firearm/explosive-related incidents, investigators use this detector to conduct a carpet-style metal evidence search in the central scene and surrounding areas—including shell casings, warheads, knives, metal tool fragments, mobile phones, keys, and more. In cases involving the disposal of bodies or crime weapons in water, the device's fully waterproof design allows it to perform underwater metal evidence search and localization in shallow water areas, providing precise target guidance for diving salvage operations.

Core Technical Parameters

In terms of detection principle, the device is based on pulse induction metal detection technology, emitting brief, powerful electromagnetic pulses and performing target detection and discrimination by analyzing the eddy current decay time constant of metals. For sensitivity, it supports multi-level adjustable sensitivity, capable of detecting small metal weapons and metal evidence fragments at the highest sensitivity setting. For the alarm method, it is equipped with synchronous audible and visual alarms—a high-decibel buzzer and a high-brightness LED indicator are triggered synchronously, ensuring that alarm information is perceived instantly in any environment. Regarding environmental adaptability, it features a fully waterproof sealed structure design, enabling normal operation in rainy or snowy weather and even brief underwater immersion. It maintains stable detection performance in complex media such as wet sand, seawater, and highly mineralized soil, unaffected by changes in environmental conductivity. For operational characteristics, the handle features an ergonomic design and a lightweight structure. The operation interface is simple and intuitive, with a single button or knob controlling power on/off and sensitivity adjustment.

Compliant Field Application Cases

During the trial of an organized crime case by a municipal intermediate people's court, the court security screening point faced extremely high security risk management pressure due to the large number of defendants, many with violent tendencies. The judicial police unit deployed multiple units of this metal detector at the courtroom entrance to conduct rapid secondary inspections on all individuals entering the courtroom who triggered the walk-through metal detector alarm. One observer triggered a waist-area alarm when passing through the fixed metal detector gate. The judicial police officer used the detector to conduct a non-contact scan around the individual's waist, accurately pinpointing a small metal folding knife concealed inside the waistband. The item was immediately confiscated, and the individual was escorted away, averting a potential security threat. The entire secondary inspection process occurred without any physical contact, was completely civil and standardized, safeguarding courtroom order and judicial authority.

During the investigation of a series of cable theft cases, technical investigators from a municipal public security organ searched the grass and soil at the crime scene for fragments of crime tools potentially left behind by the suspect. Investigators used this detector in the highest sensitivity mode to conduct a carpet search of the central scene and surrounding area. Approximately ten meters from the point where the cable had been cut, they discovered a fractured shear tool blade buried in the shallow soil beneath the grass. Comparison of the fracture surface with the shear tool seized from the subsequently apprehended suspect confirmed that the blade had broken off from that tool, making it key physical evidence for determining that the suspect used the tool to commit the theft. In this case, the detector's high sensitivity and anti-mineralization interference capability provided reliable technical support for discovering minute metal evidence in a complex outdoor soil environment.

Manufacturer Information: Beijing Best United Technology Co., Ltd.
Website: https://www.bestlh.com
Address: Building C9, Jianziban, No.1 Courtyard, Jinghai Sixth Road, Yizhuang Development Zone, Beijing
Tel: 010-56526048