Common access control systems

In recent years, due to the popularity of the Internet and smart mobile devices, the application of the Internet of Things in the field of Access Control has expanded rapidly. The concept of "smart home" began to gradually enter people's field of vision. In the stage of diversified development, enterprises spared no effort to develop products with core competitiveness. The access control system not only has the basic function of controlling the entry and exit of personnel, but also begins to cooperate with other systems. Integration, such as video surveillance, building intercom, WIFI probe, security prediction, emergency alarm and other functions. At the same time, in order to meet the needs of customers in different scenarios, major companies have begun to launch customized products and services. From popular access control needs, it has gradually evolved into access control solutions for specific industries.

First, the basic composition of the access control system

The access control system consists of access control controller, card reader, exit button, lock, communication converter smart card, and power management software.

Smart card: The role in the smart access control system is to act as a medium for writing and reading data.

Controller: It is the core of the entire system, responsible for the input, processing, storage, and output of information and data in the entire system, as well as the communication method between the controller and the card reader

Lock: It is the executive component in the whole system. There are currently three categories: electric locks, magnetic locks, electric mortise locks. According to the user's requirements and the material of the door, electric locks are generally used for wooden doors, magnetic locks are used for metal doors and wooden doors, and electric mortise locks are relatively widely used, and doors of various materials can be used. As an executive component, the stability and durability of the lock are very important.

Power supply: The power supply is a very important part of the whole system. If the power supply is not properly selected and there is a problem, the whole system will be paralyzed or various failures will occur, but many users tend to ignore the importance of the power supply. Access control systems generally use relatively stable linear power supplies.

Management software: responsible for the monitoring, management and query of the entire system. Managers can monitor and manage the status of the entire system and the working conditions of the controller through the management software, and can expand to complete functions such as patrolling, attendance, and parking lot management.

What types of access control systems are there?

As the name implies, the access control system is a system for controlling the entrance and exit passages. It is developed on the basis of traditional door locks. Common access control systems include: password identification access control system, credit card identification access control system, biometric access control system, etc.

Password identification access control system
Access rights are identified by verifying that the entered password is correct. Such products are further divided into two categories, one is ordinary type, and the other is out-of-order keyboard type (the numbers on the keyboard are not fixed and change automatically from time to time). The advantage of password identification is that it is easy to operate, no need to carry cards, and the cost is low. The disadvantage is that the security is poor and it is easy to leak, it can only be controlled in one direction, there is no record of opening the door, and the keys are easily damaged and malfunctioning.

Swipe card identification access control system
According to the type of card, it can be divided into contact card access control system (magnetic stripe card, barcode card) and non-contact card (also called induction card, radio frequency card) access control system. For contact products, the cards used in contact are easy to wear, the information is easy to copy, and it is easy to be interrupted by external magnetic field interference. Contactless cards have the advantages of convenient use, strong durability, fast reading speed, and high security.

Biometric Access Control System
Identify entry and exit by inspecting personnel biometrics, etc. There are fingerprint type, palm type, iris type, facial recognition type, finger vein type and so on. Its advantages are that it will not be lost or stolen, without the burden of remembering passwords, and it is safe and convenient. However, at present, the stability and accuracy of biometric identification are still further improved, and the price of the products is also higher than the previous two categories, and the applicable scenarios also have certain limitations.


In recent years, new forms of access control systems such as QR code, Bluetooth, and WIFI have emerged. After the resident has verified his identity through the mobile APP, he can use the mobile APP to open the door near the access control machine. At the same time, the resident can also generate a QR code image that authorizes the visitor to open the door and share it with the visitor. The visitor's QR code is limited by the time and the number of times the door can be opened. .

After more than 20 years of development, the access control system has gradually become a complete access management system. With the continuous development of the security industry, traditional password identification and card identification have been unable to meet the market demand. The development and rise of the Internet of Things, cloud computing and intelligent mobile devices have prompted enterprises to develop new products and new technologies to gain a larger market space. and product profitability.