Walk through metal detectors, also called door frame metal detectors or security archway walk through metal detector, are designed to protect mass events, industrial plants and correctional facilities, sports facilities and stadiums and any other places where it is not allowed to bring metal objects, providing a health friendly inspection way. They are effective at screening high volumes of patron, which are able to examine all kinds of metals, exposing potential dangers including handguns and knives, and they are playing more important roles than ever in security screening by a fast, accurate and cost saving way.
Walk through metal detectors use pulse induction system to detect metal objects, which sends a short burst of current through a coil of wire located in the side of the archway, creating an electromagnetic field around the coil within the area where a person must pass through. The pulsing magnetic field is disturbed and reflected if a person walking through with a metal object, which picked up by another coil of wire and trigger an alert to indicate that the person is carrying something metallic.
Walk through metal detectors are supplied with multiple independently adjustable zones to ensure uniform detection throughout the aperture, which combined with powerful processing capacity allowing for fast collection of information from from multiple metal items passing through simultaneously and accurate threat resolution based on the characteristics of the items. On the other hand, they have high immunity to electromagnetic and mechanical interference, automatically scanning and detecting the mechanical and electromagnetic interference of the installation site environment, and automatically adapting to the working environment.
Jayda company is a professional walk through metal detector manufacturer & supplier with strong manufacturing and R & D capability, supplying wide range of security walk through metal detectors varying in specifications and costs for different applications. Meanwhile, we are working hard to develop update security archway metal detectors with fashion design each year, and also provide customization as per customers‘ requirements. Welcome to reach us for more details on our products.
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What is a walk through metal detector?
Walk through metal detector, also called security walk through metal detector or door frame metal detector, is an electronic device which detects the presence of metal objects hidden within human body, which is designed to protect mass events, industrial plants and correctional facilities, sports facilities and stadiums and any other places where it is not allowed to bring metal objects, providing health frendly inspection of people in search of dangerous metal objects. Supplied with multiple separate overlapping metal detectors in one frame which more accurately and quickly identify metal while tracking metal moving position sound and light alarm, combining the required security with a high level of operating efficiency, walk through metal detector allows a high flow rate of people through the gate with a minimum number of nuisance alarms (with personal items for example such as coins, keys or belt buckles can pass through the magnetic field without causing an alarm. Coming with compact and lightweight desigh, door frame metal detector is adaptable to any soundings and aesthetically suitable for the most discrete applications.
How does a walk through metal detector works?
Walk through metal detector arches use pulse induction (PI) technology to detect metal objects. The pulse induction system sends a short burst of current (pulse) through a coil of wire (transmitter) located in the side of the archway. This creates an electromagnetic field around the coil which covers the area through which a person must walk under the arch. Typically, a PI based system will send around 100 pulses per second but this can vary, depending on the make and model. If a person walking through the arch is carrying a metal object this will cause the pulsing magnetic field to be disturbed and reflected. This is picked up by another coil of wire (receiver) and used to trigger an alert to tell the operator that the person is carrying something metallic. The very best security arches feature what`s called dual-side detection, wherein transmission and reception coils are in place on both sides of the arch. This feature supports uniform detection throughout the arch and provides better noise cancellation which makes it much easier to install and setup.
Walk through metal detector types
Single zone walk through metal detector: simply detects presence of metal objects, but does not locate where the metal objects are on the persons body.
Multi zone walk through metal detector: will locate the whereabouts of any detected metal objects. The more detection zones supported by the device then the more accurate the location
The advantages of walk through metal detectors
1. multiple independently adjustable detection zones to ensure uniform detection throughout the aperture;
2. equipped with the display indicating the location of the detected metal object(s) by pinpointing either left, right or center position of the height where the item(s) passed through the metal detector;
3. adopt DSP digital signal processing technology to automatically scan and detect the mechanical and electromagnetic interference of the installation site environment, automatically adapt to the working environment, and has high immunity to electromagnetic and mechanical interference; no need for periodic calibration, greatly improving resistance to dryness ability;
4. has a variety of alarm sound selection modes to suit different occasions.;
5. aesthetic, unobtrusive and light weight;
6. quick, accurate analysis of all parts of the body of people in transit, from the shoe level to the crossbar;
7. High transit flow rates and the minimum need for intervention by inspection personnel
Applications of walk through metal detectors