Analysis of the Development Trend of China's Anti-theft Alarm System Technology
Jiangyin Lanyu Chemical Co.,Ltd. , https://www.nblanyu-chem.com
Five major trends in the development of anti-theft alarm First, the automatic detection of failure, to prevent the failure to report function The primary purpose of the user to install anti-theft alarm is to prevent theft, but users will not encounter the theft and other dangers every day. Anti-theft alarm will not work after a long time without alarm? How can you know whether the anti-theft alarm is working in a clear and concise manner? This requires the anti-theft alarm to have the function of automatic fault detection to prevent the occurrence of a missed report.
The fault self-test is not a single-sided self-test of the detector or the alarm host, but a mutual detection between the detector and the host. For example, the detector in the system sends a normal code signal to the host every 12 hours, and the host can receive the normal code signal of the detector within 48 hours, which proves that the detector is working normally. Conversely, the host will show a fault prompt to allow the user to perform a system check so that the system can work safely and effectively.
Second, anti-destruction, anti-trimming wireless relay alarm function In addition to the global mobile GSM mobile alarm host in the market can not use a fixed telephone line, other alarm host need to use the city's inherent telephone communications lines, then generated a burglar alarm Hidden Trouble -- What if the telephone line is cut off or the telephone line fails? The wireless forwarding function of the alarm host has emerged to solve the problem of normal operation of the alarm host after the telephone line is damaged.
Taking the wireless alarm host as an example, in the armed state, the alarm host has set up a wireless forwarding function. When the telephone line is cut off or the telephone line fails, the host will immediately start the wireless forwarding function and immediately transmit the originally set alarm phone wirelessly. To another alarm host, another host immediately dials an alarm phone, to achieve a self-discharge alarm function to ensure that the anti-theft alarm is perfectly safe.
Third, smart alarm system Compared with traditional security products, smart has a very reliable high sensitivity and low false alarm rate. At the same time, the system also has a strong anti-destructive capability. Even if maliciously cut by an intruder, the system can continue to provide effective location warning capabilities without being paralyzed.
This smart alarm system can be used in many fields: such as government facilities, military bases, airports, banks, prisons, schools, residential quarters, chemical plants, nuclear power plants, reservoirs and other closed intrusion alarms, as well as railways, oil, gas pipelines. Road, communication lines and other areas of monitoring and maintenance.
Fourth, the control function of the intelligent home appliances The intelligent home system utilizes the advanced computer, network communication, automatic control and other technologies, organically combines various application subsystems related to family life, through comprehensive management, to make family life more comfortable, Safe, effective and energy-efficient. It can turn a group of passive home devices into smart tools to optimize people's lifestyles, help people effectively arrange time, enhance the safety of family life, and save energy costs for families. In recent years, smart home systems have begun to enter more and more homes, but because pure home smart products are still relatively expensive, many families are discouraged; and home burglar alarm products with intelligent functions have become a hot spot for users to buy.
Some anti-theft alarm products on the market now have practical home appliance control functions, such as the automatic opening and closing of home appliances such as lights and air conditioners through infrared signals, and the combination of technology and art, intelligence and humanity. Anti-theft alarm products in addition to high-quality anti-theft fire and gas prevention and other functions, but also can achieve intelligent home appliance control functions, but also gradually become one of the elements of the user to buy products.
V. Intelligent learning function The biggest problem of the perimeter prevention system is that it is vulnerable to the outdoor environment, and is prone to false alarms and omissions. This is especially true when storms occur, or when passing vehicles vibrate or take off and landing. Time reporting occurs. Some perimeter prevention systems have developed intelligent learning functions. They learn and memorize environmental conditions through self-learning techniques. When they are officially running, similar environmental conditions can be blocked, such as false alarms. Features with obvious characteristics such as wind, rain, and small animal activity can be automatically deleted, allowing the detection of true intruder signals to be optimized.
As is known to all, after one year of use of the conventional infrared radiation prevention system, infrared light is apt to attenuate, and this can cause false reports to be missed. After modern technology innovation, laser intrusion detectors are now on the market, and laser intrusion detection systems are significantly more adaptable to harsh climate environments than similar active detectors. The laser beam has a large emission power density, a small divergence angle, a concentrated beam, and a good directivity. Under the condition of using the same power device, the power density of the receiver beam is several hundred to several thousand times that of the infrared receiver. Therefore, under the same climatic conditions, the transmission attenuation of laser is much smaller than that of other similar detectors, and the ability to penetrate rain and fog is strong. The detection distance can reach several hundred meters to several kilometers, which greatly reduces the false alarm caused by the climate.
In the future, the perfect equipment for the development of anti-theft alarm systems is generally divided into: front-end detectors and alarm controllers. The alarm controller is a host computer (such as a computer host), is a processing center, the system includes wired/wireless signals, the system itself fault detection, power supply part, signal input, signal output, built-in dialer, etc. The alarm controller is an integral part of the anti-theft alarm system.
First, the impact of the environment on the anti-theft alarm system due to environmental interference caused by false alarm refers to the alarm system in normal working conditions, such as weather, rain and snow weather, thunder, electromagnetic sparks generated by high-power motors, fog days, etc. The factors are domestic pets and electric toys. In principle, it is unavoidable, and the facts are not needed, which is a false alarm. For example, thermal airflow causes false alarms from passive infrared intrusion detectors; high-frequency sounds cause false alarms from single-technology glass break detectors; ultrasonic sources cause false alarms from ultrasonic detectors, etc. The more effective measure to reduce such false alarms is to use Laser detectors.
The biggest problem of the anti-theft alarm system is that it is vulnerable to the outdoor environment, and it is easy to report false alarms and omissions. Especially when a storm comes, or the vibrations of passing vehicles or aircraft take off and landing, etc., it often leads to accidental missed timing. Some anti-theft alarm systems have developed intelligent learning functions. They learn and memorize environmental conditions through “self-learning†techniques. When they are officially running, similar environmental conditions can be masked.
Second, anti-theft alarm system detection technology diversification At present, the front-end detectors of burglar alarm systems basically use the following technologies: laser radiation, infrared (active infrared, passive infrared), microwave, infrared + microwave; vibration induction (sound and vibration Wave), micro-gravity sensors, pressure sensors, temperature sensors, gas sensors, fingerprints, video image analysis, vein lines, iris, brain waves and many other. It is mainly to see what kind of detectors are used for the occasion and importance of prevention. At present, the most commonly used are: laser radiation, infrared (active infrared and passive infrared), microwave, infrared + microwave, vibration induction (sound and shock waves), although there are many anti-theft alarm detection technology, and the implementation is diversified. However, due to the defects of each technology, process, design, etc., the current burglar alarm products generally have the disadvantage of high false positive rate. For example, anti-theft alarm products using infrared and microwave technologies have long been used and developed. The application of these technologies is very mature, but the natural defects are insurmountable. Only high-performance sensors, especially biometric sensors, can be used. Basically solve this problem.
Anti-theft alarm detection range varies according to detection technology, environment, etc., and is generally in the range of 5-300 square meters. The scope of the laser beam detector is greater, but it will not exceed 1000 meters.
Third, the anti-theft alarm system still needs to be perfect The anti-theft alarm industry has developed relatively slowly over the past 10 years, and full-scale digital technology has not yet begun (hosts and detectors). The current state-of-the-art technology in the security industry applies to fully digital technology, whether it is front-end or control equipment. With the rapid development of science and technology, the alarm system industry is slowly moving toward digitalization and computer networking. All-digital detectors, all-digital network platforms, and multi-angle control methods (ie, a variety of joint alarm technology alarm protection systems, a variety of high-performance, low false alarm rate detectors). With the integration of access control systems, intercom systems, and systems, and ultimately integrated with the computer integrated security system. All the security subsystems will be integrated into the integrated alarm system under the computer management platform.