With the rapid development of China's economy, people's attention to security issues has prompted the rapid development of China's security industry market. The social security situation caused by the process of economic development is also worrying. The ever-widening gap between the rich and the poor has caused the crime rate in developing countries to rise, and the demand for controlled access systems in society is also increasing.
At present, the integration of entrance and exit systems with monitoring, anti-theft alarm, and intercom systems is the general trend, and the boundaries of the four security systems are becoming more and more blurred. The four security systems all rely on computer software integration platforms, including access control and parking lot management systems. The integration of the entrance and exit system and the intercom system also started.
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The access control system and the parking lot system are collectively called the entrance and exit control system. As the name suggests, it is a system that controls the entrance and exit passages. Where to let certain people, refuse certain people, when to sound an alarm, and remember the process of entering and exiting to achieve control Security purpose. It is developed on the basis of traditional door locks. The traditional mechanical door lock is just a simple mechanical device. No matter how reasonable the structural design and how strong the material is, people can always open it by various means. It is very troublesome to manage the keys in the passages where a large number of people enter and exit. If the key is lost or the personnel are replaced, the lock and key must be replaced together.
In order to solve these problems, the emergence of electromagnetic locks and electronic code locks has improved people's management of entrances and exits to a certain extent and made the management of channels enter the electronic age. However, with the application of these two electronic locks, Their own defects are gradually exposed. The amount of information stored by the magnetic stripe is small, the contact card and the card reader are worn out, and the failure rate is high. The problem with the magnetic card lock is that the information is easy to copy and the safety factor is low.
In recent years, with the development of proximity card technology and biometric technology, the access control system has developed rapidly and has entered a mature period. Induction card access control systems, fingerprint access control systems, iris access control systems, and finger vein recognition access control systems have appeared. , Face recognition access control system, out-of-order keyboard access control system, and other technical systems, have their own advantages in security, convenience, ease of management, etc., and the application fields of access control systems are becoming wider and wider. As the usage rate of portable devices such as smartphones increases, access control systems that use smartphones as identification tools have also appeared.
Face recognition technology is a biometric technology that has attracted much attention from the industry in recent years. Many video surveillance manufacturers write their own facial recognition algorithms into cameras to enhance the camera's intelligent image and added value. A region feature analysis algorithm widely used in face recognition technology. It combines computer image processing technology with the principles of biostatistics. It uses computer image processing technology to extract facial feature points from videos and analyzes using the principles of biostatistics. Build a mathematical model, that is, a facial feature template. Use the built face feature template and the face of the subject to perform feature analysis, and give a similar value based on the analysis result. This value can be used to determine whether it is the same person.
The functions of the access control system are also gradually increasing. For example, the one-card system commonly used on university campuses is not only used for access control management, but also commonly used for dining in canteens, book borrowing, and dormitory management. As the Internet of Things is also adopting identification technology, the application field of identification technology is getting bigger and bigger.
In all kinds of entrance and exit control equipment, biometrics has become more common as entry and exit authentication. Fingerprint recognition, iris recognition, finger vein recognition, and face recognition have their own strengths. In the future, the security, integration capabilities, openness, diversification of applications and cloud control capabilities of the access control system will be the future development trend.
Author: Written by S4A from S4A INDUSTRIAL CO.,LIMITED
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