Use of intrusion alarm system

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Use of intrusion alarm system The basic concept of intrusion alarm systems <br> <br> when criminals invaded to prevent the region, while attempting to steal, timely technical system intrusion signaled in staff called the intrusion alarm system. Intrusion alarm system consists of three parts: detector (including emergency alarm device, such as emergency button, foot pick, pedal, etc.), channel and alarm controller. The detector is commonly known as the probe. Its role is to turn the intrusion detection signal into an electrical signal that can be transmitted in the channel. Commonly used detectors include laser radiation detectors, active infrared detectors, and electronic fences. Channel, the medium that transmits signals. Its role is to send the electrical signal sent by the detector with the alarm information to the alarm controller in a timely and accurate manner. Channels are divided into cable channels and wireless channels. Wired channels include: twisted pair, telephone line, coaxial cable, fiber optic cable, etc.; wireless channel is the radio in the free space. The alarm controller can receive the electric signal transmitted by the channel and carries the alarm information. After the signal is processed, an audible and visual alarm is issued, and the device that displays the alarm position is called an alarm controller. The detector, channel, and alarm controller constitute the simplest alarm system.

In practical applications, multiple detectors are often controlled by an alarm controller. This is an intrusion alarm system in a general sense. According to the needs, the alarm controller can also be connected with each alarm center (for example, the intrusion alarm system with multiple fortification units is connected to the bureau), which constitutes a larger alarm system, ie, an alarm network.

2. The use of detectors

(1) Laser intruder detector 1 What laser intruder detector When the human body moves within the detection range, a detection device that can generate an alarm state is called laser intruder detector. This is a detector for indoor and outdoor surveillance.

2 Laser Intrusion Detector Advantages a. When flying birds, plastic belts, etc., move within the detection range, no alarm state will be generated because laser beam detectors can be set to block double-beam alarms.

b. Bad weather such as wind, rain and snow will not affect the normal use of the equipment.

c. Strong electromagnetic fields, strong light without interference, will not cause the laser to shoot the detector to report to the police by mistake, for example the user that is close to broadcasting station, TV station.

Æ’. Periodically (generally not more than 6 months) imitate the movement of the intruder within the detection range to check the sensitivity of the detector and adjust or repair if problems are found.

 

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