What is the Role of Door Frame Metal Detectors in Security Systems?

 

Have you been to government establishments, airports, malls, metro, railway stations, and threats?

 

Then, you might have passed through a door frame metal detectors to show that you are not carrying any metal weapons or illegal stuff that can hurt other people. These doors are like sentinel guards safeguarding various establishments, ensuring that people who enter the premises are not carrying any objects that can be harmful. 

 

DFMD plays a crucial role in maintaining security by deterring any potential threats that people might be carrying with them. 

 

So, in today's blog, you will understand more deeply about the role of this security equipment. 

 

Let's dive in! 

 

What are Door Frame Metal Detectors Or DFMD?

 

Door frame metal detectors, commonly known as DFMDs, are security devices used to detect metal objects on individuals passing through them commonly used in airports, schools, and public venues. It uses a technology called pulse induction to detect metal that may be hidden o­n the body of the person passing through this door.

 

DFMDs are designed to detect weapons and other metallic objects carried by individuals entering a secured area, triggering an alarm. The efficiency in screening for weapons and other metal objects makes them essential tools for security checkpoints in airports, government buildings, and other high-security areas.

 

How Does DFMD Work?

 

The DFMD is a Door Frame Metal detector that operates on the principle of electromagnetic induction. It consists of several key parts, including transmitter coils, receiver coils, and signal processing units. 

 

The DFMD emits electromagnetic waves through transmitter coils, creating a magnetic field. When a metallic object passes through this field, it disrupts the electromagnetic waves, causing a change in the signal received by the receiver coils. The signal processing unit analyses these changes and triggers an alarm if it detects significant disturbances, indicating the presence of metal. This working principle enables the DFMD machine to efficiently detect metal objects carried by individuals passing through it, enhancing security measures.

 

Types of Door Frame Metal Detectors 

 

1. Single Zone DFMD

 

In single-zone door frame metal detectors, there is only one detection zone, which is perfect for locations that need moderate security. It can be installed in places like office buildings or small ventures. So, what single zone DFMD does is it blares out alarms on the whole frame once it detects metal. 

 

2. Multi-Zone DFMD

 

Here, instead of using the more popular "Pulse Induction method," DFMDs use the "Continuous Wave Multiple Sensor Measurement Technique." 

 

It means both screening effectiveness and operating expenses are reduced as a result, making it possible to identify concealed weapons precisely. A display indicates if a weapon is at the height of the person being screened—ankle, knee, waist, chest, or head—and whether it is to the left, right, or centre. 

 

Moreover, suppose a person is carrying weapons in more than one place. Each weapon is identified, and its location is displayed. In that case, security officers can quickly target the thing or objects that triggered the alarm during a subsequent manual search.

 

3. Portable DFMD

 

This portable door frame metal detector is lightweight and portable, making it perfect for on-the-go use. It is perfect for occasions that call for mobile metal detection capabilities or transitory security checkpoints.

 

4. Weatherproof DFMD

 

These DFMDs are appropriate for outdoor use in locations such as stadiums or border crossings because it is designed to endure severe environmental conditions. 

 

Components of Door Frames Metal Detector 

 

1. Transmitter Coils

 

The transmitter coils, which emit electromagnetic fields into the surrounding area, are the central component of a door frame metal detector. The fundamental magnetic field required to identify metallic objects is produced by these coils.

 

2. Receiver Coils

 

When any metallic items pass through the detector, receiver coils, which are parallel to the transmitter coils, sense changes in the magnetic field. The existence of metal objects is then ascertained by analysing these perturbations. 

 

3. Control Unit

 

Serving as the DFMD's brain, the control unit interprets and processes data from the receiver coils to determine whether any metal objects are present. Additionally, it regulates the detector's many settings and features.

 

4. Alarm System

 

Security staff are notified by the alarm system when a metal object is found. This can come in the form of visual cues like flashing lights, audio alarms, or a combination of both.

 

5. Power Supply

 

For DFMDs to function well, a steady power source is necessary, which is usually supplied mainly by electricity. However, certain models may offer battery backup alternatives for usage in locations with unstable power sources or during emergencies.

 

Also Read: How to Select the Right Industrial Supplies and Equipments

 

What to Consider Before Buying a Door Frame Metal Detector

 

Here are a few crucial points you need to keep in mind while you are going ahead with a DFMD. There are: 

 

1. Uniform Detection 

 

A DFMD machine that is inadequate will not detect linearly, so the detector must provide consistent detection over the whole interrogating area. What you need to know is there are dead spots that consist of both high and low-sensitive areas, so when a specific metal object passes through, the detection response will change. 

 

2. Electrical and electromagnetic interference

 

If there is any electrical and electromagnetic interference, then the detections can vary, leading it to become unusable. So, the DFMD should have effective reject interference and noise cancellation features in it. To ensure that you get the best door frame metal detector, ensure that you test it out in the location where you want to install it. 

 

3. Continuously active detection

 

Before buying any DFMD, ensure the detector is always active, and the detection circuitry is never turned off. Another thing to keep in mind is never to install a detector that is not working properly in the automated entry door system.

 

4. The Types of Metal Used In It 

 

Ensure the door frame metal detector is effective, the detector must be able to effectively detect a range of metals in a single operating program for both weapons screening and pilferage prevention.

 

5. Object transit speed & Orientation

 

An object should always be detected, regardless of how swiftly, slowly, or wildly it is carried while passing through the detector. Additionally, the target should be able to be detected regardless of its Orientation.

 

Where to Find a Good Quality Door Frame Metal Detector?

 

When looking for the best Door Frame Metal Detectors (DFMDs), MVIKAS, India's First 5 PL Company, is a reliable source to go ahead with. MVIKAS specialises in dealing with goods, including top-notch DFMD parts, ensuring you get the best equipment for your security needs.

 

As one of India's First 5 PL companies, MVIKAS provides a comprehensive platform that allows you to connect seamlessly with both buyers and sellers, going above and beyond traditional logistics. MVikas provides a user-friendly interface for browsing, purchasing, and connecting with some of the most trusted sellers across PAN India. 

 

Gain access to a wide network of sellers who offer quality DFMDs, reliable customer support, and efficient logistics solutions with MVIKAS across 29000+ pin codes. Trust MVikas to make your purchase, shipping and delivery easy and convenience at an affordable price. 

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