The equipment of the anti-theft alarm system is generally divided into: front-end detectors and alarm controllers. The alarm controller is a host (like the host of a computer), which is used to control the processing of wired/wireless signals, the detection of faults in the system itself, the power supply, signal input, signal output, built-in dialer, etc. An alarm controller is essential in an anti-theft alarm system. Front-end detectors include a door magnetic switch, glass breakage detector, infrared detector and infrared/microwave dual detector, and emergency call button.
Application Status
The use of products is more stable and reliable, such as improving the performance of anti-damage, anti-lightning surge, anti-interference, etc.; adding more functions to facilitate installation, debugging and use, such as adjustable frequency of the detector, setting detection area, anti-blocking, Anti-sabotage, wireless connection between the detector and the host, etc.; more convenient installation and debugging, using wireless connection between the detector and the host, simplifying the installation and construction workload, and adapting to the needs of various home users;
Developing towards a more intelligent direction, such as increasing Area management, voice reminder, biometric identification technology arming and disarming, alarm automatic sending MMS pictures, remote control and other technologies; more networking methods, such as extending from the previous single telephone networking to IP network networking, wireless GSM/GPRS Networking, VPN dedicated line networking, etc.; through network encryption technology, data can be more secure, and through the master-slave backup function between wired and wireless, the transmission of police information is faster and more reliable; more powerful integration and expansion It can realize the coordination and unity of various systems, make the alarm security more automatic and intelligent, and further improve the security protection.
Development direction
Manufacturers of alarm system equipment should improve the ease of use of the equipment: it is simplified to be as easy to use as everyday household appliances. Users only need to set the position of the detector, and the program will set the corresponding professional programming settings; adding voice navigation function, you can Can know how to set up and use the system to facilitate the operation and use of various groups of people; improve the professional level of system design and construction and installation personnel: eliminate the abnormal phenomenon of the system caused by the discomfort of product design and selection and the incorrect installation position of the equipment; improve the product quality. The level of after-sales service, such as the centralized organization of user training; let users understand some principles of the anti-theft alarm system, and reduce false alarms caused by improper use.
Role
The anti-theft alarm system refers to a device that causes an alarm when illegally intruding into the prevention area. It is used to signal a dangerous situation. The burglar alarm system uses detectors to arm important locations and areas inside and outside the building. It can detect illegal intrusion in time, and when it detects illegal intrusion, it can warn the relevant personnel in time. For example, magnetic door switches, glass breaking alarms, etc. can effectively detect foreign intrusions, and infrared detectors can sense the activities of people in the building. Once an intrusion occurs, the time and location of the intrusion can be recorded in time, and an alarm signal is issued through the alarm device.
Composition
Perimeter defense alarm system
The first security line of defense: It consists of perimeter prevention and alarm system to prevent illegal intruders from entering the community over the fence and surrounding areas. Use inductive cables or active infrared reflectors.
Community Monitoring System
The second security line of defense: It is composed of a community monitoring system, which monitors and manages vehicles, personnel, and key facilities entering and leaving the community and on main passages. Cooperate with the community alarm system and perimeter protection system to monitor and record on-site conditions to improve the efficiency of alarm response.
Patrol Management System
The third security line of defense: It consists of a security patrol management system, and the security guards in the residential area supervise suspicious persons and events in the residential area. Cooperate with the electronic patrol system to ensure that the patrols of the security personnel are in place and realize the strict management of the community property.
Video intercom system
The fourth security line of defense: It is composed of a networked building and apartment visual intercom system, which can keep idle and miscellaneous personnel out of the stairs and prevent outsiders from wandering around.
Detector system
The fifth security line of defense: It is composed of the home burglar alarm system, which is also the most important and the last link of the entire security system network. When a thief illegally invades a household or emergencies such as gas leaks, fires, and emergencies of the elderly occur, the alarm will be automatically issued through various electronic detectors installed indoors. This quickly dispatched security or ambulance personnel to the resident’s scene to deal with it.
System composition
As the last and most important line of defense of the community security system, the home anti-theft alarm system uses fully automatic anti-theft electronic equipment to judge illegal intrusion or illegal intrusion through electronic infrared detection technology and various types of magnetic switches in unattended places. All kinds of gas leakage, through the control box horn or alarm lights on-site alarm, and at the same time, the alarm information is transmitted to the alarm center or the owner himself through the shared telephone network. At the same time, when an emergency happens to someone at home, emergency information can also be sent to the community networking center and the owner through various wired and wireless emergency buttons or keyboards.
Anti-theft alarm host
It is judged to receive the alarm signals from various detectors. After receiving the alarm signals, it can alarm according to the preset alarm mode. For example, starting the sound and light alarm, automatically dialing the set multiple groups of alarm telephones, and if it is connected to the community alarm center, the signal can be transmitted to the community alarm center. The alarm host is equipped with a remote control, which can remotely control the host.
Infrared Burglar Detector
Using microcomputer digital signal technology, high stability detection device, innovative design. It has temperature compensation, anti-strong white light, anti-electromagnetic interference, and eliminates a variety of false alarm factors. When the intruder passes through the infrared detector, the infrared detector will send a signal to the alarm host, and the alarm host will alarm immediately.
Door and window magnetic detectors
After the alarm host is fortified, the intruder opens the doors and windows installed with door magnets and window magnets, that is, the door magnets and window magnets send a signal to the alarm host, and the alarm host starts the alarm immediately.
Remote control
It is used to arm and disarm the anti-theft alarm system, and the usage method is the same as that of the common car anti-theft remote control.
Smoke Detectors
Using an advanced radioactive source, contrast space, and open space to detect heavy ions radioactively, whether it is open flame, no fire, smoke, or smokeless combustion, it is more sensitive. When harmful gas is detected, the indicator light is red, and an alarm signal is sent to the host.
Hazardous Gas Detector
Detection range: methane, ethane, liquefied petroleum gas and other combustible gases Detection detection concentration: methane, propane, ethane greater than 10000PPM, alcohol, acetate greater than 1000PPM, ethylene, ammonia greater than 500PPM Working environment temperature: -10℃～ 5℃ Humidity: less than 95%.
Function
The intelligence of the security industry has become an important development trend. Intelligence is actually adding the functions of intelligent analysis and response and intelligent control to the process of ordinary monitoring and alarming. Intelligence can make the anti-theft alarm system work more efficiently and make users more worry-free.
The wireless forwarding alarm function of anti-vandalism and anti-cutting is in the market except that the GSM global mobile alarm host can not use the fixed telephone line, other alarm hosts need to use the city’s inherent telephone communication line, then there is a hidden danger of anti-theft alarm. , What if the telephone line is cut or the telephone line fails? The wireless forwarding function of the alarm host came into being, which solved the problem of the normal operation of the alarm host after the telephone line was damaged.
Taking the wireless alarm host as an example, in the fortified state, the alarm host is set with the wireless forwarding function. When the telephone line is cut or the telephone line is faulty, the host will immediately start the wireless forwarding function, and immediately transmit the originally set alarm phone wirelessly. To another alarm host, the other host immediately dials the alarm phone, realizes the alarm function of disconnection and self-service, and ensures that the anti-theft alarm is foolproof.
Intelligent learning function
Crystal shield anti-theft alarm system JD-X503
The biggest trouble of the perimeter defense system is that it is easily affected by the outdoor environment, and it is prone to false alarms and false alarms, especially when a storm comes, or when a vehicle vibrates, or when an aircraft takes off or landed, it often leads to false and false alarms. Some perimeter defense systems have developed an intelligent learning function. It learns and memorizes environmental states through “self-learning” technology, so that when it is officially running, similar environmental states can be shielded, such as false alarms caused by wind, Things with obvious features, such as rain and small animal activities, can be automatically “deleted”, so that the detection of real intrusion signals can achieve the optimal effect; a fiber-optic technology to the end.
As we all know, the previous optical fiber perimeter defense system used one fiber optic cable for each defense zone. The biggest disadvantage of this kind of system is the large amount of optical fiber engineering, and the optical fiber signal feedback system launched by Ningbo Nuo can realize that only one optical fiber is laid from the perimeter head to the perimeter tail, and when an intrusion event occurs at a certain position along the optical fiber laying line , its back-end control platform can accurately detect the location of the intrusion point, the system not only saves the amount of optical fiber wiring, but also saves the cost of manpower and material resources for checking the precise location of the intrusion.
Magnetic door switch
The door magnetic switch is composed of a dry reed switch and a magnetic strip, which can be divided into wired/wireless door magnetic. Generally used in doors and windows. As long as the distance between the magnetic strip and the reed switch is less than 20mm, there will be an alarm signal output.
Glass break detector
The glass breakage detector uses the piezoelectric effect of the piezoelectric ceramic sheet (the piezoelectric ceramic sheet will generate charges on its surface when it is twisted and deformed under the action of external force), and can be made into a glass breakage intrusion detector. It can effectively detect the high-frequency glass breaking sound (10k~15kHZ), and has a strong inhibitory effect on the sound signal below 10kHZ (such as talking and walking). The frequency and intensity of the acoustic emission of glass breakage are related to the thickness and area of ​​the glass. Glass breakage detectors are roughly divided into two categories according to their working principles: one is a single-technology sound-controlled glass breakage detector, which is actually a special-purpose ( A voice-activated alarm detector that can drive out the high-frequency signal generated when the glass is broken. Another category is the dual-technology glass breakage detector, which includes a voice-activated-vibration type and an infrasonic-glass-break high-frequency sound type. It is generally suitable for ATM machines in banks, and other glass is anti-destructive.
Infrared Detectors
Infrared detector is a kind of radiant energy converter, which is mainly used to convert the received infrared radiant energy into other forms of energy such as electric energy, thermal energy, etc. which are convenient for measurement or observation. According to the energy conversion method, infrared detectors can be divided into thermal detection There are two types of detectors and photon detectors.
The working mechanism of thermal detectors is based on the change of a certain electrical property of the detector caused by the thermal effect of incident radiation, while the photon detector is based on the photoelectric effect generated by the interaction between the incident photon flow and the detection material. The specific performance is the change in the number of free carriers (ie electrons and/or holes) in the response of the detector. Since this change is caused by the change in the number of incident photons, the response of the photon detector is proportional to the number of absorbed photons. The response of the heat detector is proportional to the energy absorbed.
Heat detector
Crystal shield MMS alarm all-in-one machine
The energy conversion process of thermal detectors includes: thermal resistance effect, thermovoltaic effect, thermopneumatic effect and pyroelectric effect. The energy conversion process of photon detectors includes: photovoltaic effect, photoconductive effect, photoelectromagnetic effect and light emission effect
The double or triple mirrors have microwave and intelligent anti-pet functions respectively.
They are also widely used, such as infrared alarms installed indoors, as long as there are people or moving objects, it will output signals.
Emergency button
Emergency button: It is the simplest kind of equipment among anti-theft equipment, it is a switch. There is a normally open/closed output, and it will output an alarm signal to the host when there is a switch value change.
Alarm indicator
Alarm indicator light: It is an output device. When the alarm host processes an output with an alarm signal to be processed, the connected alarm indicator light will work.
Audible alarm
When the alarm host receives the alarm signal, it will output through the sound and light alarm, and the sound and light alarm will flash and beep at the same time.