Since 2000, China's burglar alarm industry is a rapid development, the number of burglar alarm sales and total sales are 30% -60% of the annual average amplitude of the high-speed climb. 2011 sales and total sales of products compared to the 2010 growth rate of about 30%, and a conservative estimate of 2012 can continue or even exceed this growth rate. This paper discusses the development of burglar alarm products from the history of product development, as well as product technology development direction of the burglar alarm development. Burglar alarm products are the first to enter the Chinese market application of security products, so burglar alarm products have become China's first security products manufacturers involved in the field. China's anti-theft alarm products began in the early 1960s, the Beijing Municipal Public Security Bureau of the technical section of the anti-theft alarm developed by the initial application of the Palace Museum, through the criminals to steal the sound issued as an alarm signal, the staff on duty to hear the sound and then take appropriate measures.
With the development of science and technology, in 1982 the Ministry of Public Security and the Ministry of Public Security First Research Institute, according to the development of the burglar alarm technology at that time and for the National Palace Museum of a number of exhibition halls installed active infrared, passive infrared, microwave, ultrasonic, sound-controlled and other burglar detectors, forming a variety of detection means of burglar alarm system, burglar alarm technology to a new level. 1984 after the security business in China has entered a stage of popularization and improvement. China has entered the stage of popularization and improvement, and rapid development. Especially in 84 years in order to strengthen the celebration of the 35th anniversary of the National Day of security, in Tiananmen Square to establish a television monitoring project, since then, television monitoring technology into the burglar alarm system and urban traffic safety control, improve the system function.
In 1992, the theft of cultural relics in Kaifeng, criminals with pre-tested anti-technical means of defense will be a number of passive infrared detector cover, so that it loses the alarm function, so that the theft succeeded, this incident makes people aware of the loopholes and deficiencies of security, greatly promoting the development of perimeter prevention and anti-masking function of the detector, but also promote the development of the intrusion detector technology. In 1996, the Beijing Municipal Public Security Bureau began to start the financial industry key units and places to build the city's scale of regional networking alarm network, marking the beginning of China's entry into the era of commercialization of burglar alarm applications.
The domestic burglar alarm industry really gained rapid development or after 2000, Shenzhen, Fujian, Zhejiang and Henan, a number of manufacturers grew rapidly, the scale of investment and corporate strength are rapidly developing and growing. Products from the initial analog signal technology to microwave technology, the development of infrared digital pulse technology, both in terms of sensitivity, resolution, detection accuracy, or work performance are constantly improving and perfect. 1, intrusion detector - the intrusion information that occurs at the protected site into an electronic signal and transmitted to the outside of a device, commonly known as the probe, also known as the front-end equipment of the alarm. Intrusion detector is composed of sensors and signal processing part of the key to the burglar alarm system, and the sensor is the core components of the alarm detector.
2, the signal transmission part - also known as the channel, is the detector of the electronic signal transmission channel. Currently there are three main ways of transmission, namely, dedicated line, borrowed line, wireless three different transmission methods.
Dedicated line transmission is the use of special cables (including fiber optic cable) equipment by laying a special line network to constitute the transmission channel of alarm information. The advantage is the specialization of the system, information transmission is not susceptible to interference by external factors, so that the line dedicated. The disadvantage is that the laying of lines is a large amount of engineering, high initial investment, expansion difficulties, is not suitable for single-family use, must be controlled by the community or the public security department of the police center, the transmission line is easy to be damaged. So this system is only suitable for special projects.
Wireless transmission refers to the intrusion detector and wireless transmitter connected, once the police, will send a radio signal into the air.
Wireless receiver receives the signal to produce an alarm, notify the personnel to deal with. The advantages are strong resistance to vandalism, fast transmission speeds, and does not affect the aesthetics of the original decoration of the household. In particular, the use of public **** wireless network (such as telephone network, broadband network) for information transmission has its very superior conditions, with the help of telecommunications networks can be achieved with low investment; can be networked can also be used individually, which is wired network transmission can not be compared. Disadvantages are such as battery-powered may produce false alarms; susceptible to environmental limitations affect the transmission effect; may be more powerful radio waves, lightning and other stray electric field interference.
Borrowed line transmission refers to borrowing telephone lines, power lines, cable TV networks and other public **** line as an alarm signal transmission channel. The advantage is that the construction is easy, without special wiring, the disadvantage is poor anti-destructive capacity, vulnerable to interference.
3, burglar alarm controller, also known as the alarm host, it will be able to intrusion detectors issued by the intrusion of electronic signals into sound and light alarm signals and display and recording, storage devices, commonly used desktop, cabinet, box and wall-mounted types. Alarm sound, display alarm parts, storage and recording of alarm information is the basic functions of the burglar alarm controller must have. 1, burglar alarm system development of humanized
With people's standard of living greatly improved in real life, burglar alarm system technology, can also be applied to provide personalized medical alarm services. The industry has been the development trend of China's elderly, the introduction of remote medical care response system solutions. Through the burglar alarm host LCD screen, buttons, call keys and other features, the user presses the button, do not need to go through the phone, you can talk directly with the security service center or loved ones. The system can also instantly find out the user falls, activities and other information, and timed medication prompts and other events such as voice reminder function. In addition, the latest anti-burglar alarm system can also be equipped with various Bluetooth medical devices such as ECG monitors, blood glucose meters, blood pressure monitors, weight meters, etc. with Bluetooth technology according to the different needs of the users, which can instantly detect the user's physiological conditions such as blood glucose, ECG, etc., and through the alarm control mainframe, the user's physiological conditions (ECG, blood glucose, blood pressure) information is transmitted to the remote medical personnel for home care.
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2, burglar alarm system integration and application
Integration is a major development trend of security systems, burglar alarm system is no exception. In fact, the burglar alarm system and video surveillance, access control systems and other security subsystems integration, early non-new, and in recent years, as it gradually expand the application to residential, community, and therefore began to combine the smart home, but these are only the simplest, most basic integration. In addition can also be done such as burglar alarm and image monitoring linkage, currently only the use of hardware will be the output interface of the front-end detector, and image monitoring of the alarm linkage input interface, connected, when anomalies occur, through the pre-set linkage, the implementation of the image of the alarm linkage to achieve the image playback, hard disk recording. Another example is the information integration with the software platform, in addition to hardware integration, software integration is the focus of integration between the various burglar alarm subsystems. In the integration of the systems, the key point is how to solve the interaction and processing of information between the systems.
Then over the recent burglar alarm integration requirements must be to achieve a variety of alarm networking and coexistence, burglar alarm networking has an easy to confuse the meaning of the network of alarm controllers and control centers, and alarm detectors and controllers with the networking, mixed up. In fact, the alarm networking, including wired, wireless two, such as connecting the public security or wireless GSM phone notification, while the alarm detector and control the host of networking, wireless is a dedicated wireless, such as infrared or Zigbee is not a wireless platform provided by telecom operators. These two on the importance of the alarm controller and control center networking, is the key to system integration. In recent years, with the prevalence of IP networks, many alarm controller manufacturers have also begun to use wired or wireless IP network networking, but the actual see the application of networking due to the use of environmental closure, through the TCP / IP networking is not yet a significant growth in the application of the way.