The Internet of Things facilitates the linkage development of access control systems

The “Access Control Card” is a professional subdivision area in the security system. It has also undergone various stages of development such as conception, research and development, production, sales, use, and service. Now it has become a multi-dimensional, networked, and intelligent multi-position. The integrated management system is one of the important industries that are indispensable and continue to develop rapidly in the field of security.

The Internet of Things facilitates the development of the access control system and the development of access control card systems is a very small part of the Internet of Things. The Internet of Things covers a wide range, which poses great challenges to the access control card system. Previously, the card system for access control was an independent system. It was relatively closed, and applications such as door opening, attendance, consumption, patrol, elevator control, and parking lot were performed around the card; now, with the development of automation, the system needs to cooperate with fire alarms and CCTV. Linkage, effective integration with the BA system (building automation system), effective integration with the information release system and so on.

There are generally three ways to achieve linkage between firearms and fire alarms. First, the soft linkage of fire is achieved through OPC; secondly, fire linkage information is received by the fire linkage controller in the access control one-card product; and thirdly, the fire linkage is forcibly executed through the power-off of the release device.

â—‡ There are generally two types of expressions associated with CCTV. First, the access control card device or the system itself supports the camera function, which can be used to record and capture the scene. Second, the access control card device or system transmits the alarm signal to the CCTV system, allowing it to record and capture.

â—‡ With the BA system (Building Automation System) effectively combined, interactive display BA system will generally monitor the temperature, humidity, and access control card devices are generally installed near the door, the user is very easy to see contact and see, then the BA's The temperature and humidity are transmitted to the LCD screen of the device, so that the user can easily understand the current situation. The integration with the BA system is often accomplished through the building automation protocol, and the Sedona protocol standard is more popular and convenient on the market.

◇ ◇ 一 一 一 具备 具备 具备 具备 具备 具备 具备 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多 很多. The access control card system can also perform some functions of information release, such as displaying weather information and welcome messages on the LCD screen of the card reader. Currently, some devices on the market use touch screens. When some companies need employees to participate in the voting, we can use the functions of the one-card device to allow participants to swipe their cards on the device and then select the information to be voted on the touch screen to implement the functional extension of the card system.

Integration is mostly used in large-scale access control With the acceleration of the digital network development of security systems, the scope of networked products has been expanding, and the access control system has also steadily moved deeper into the TCP/IP network from the traditional RS485 bus transmission method. The limitations of RS485 communication methods in terms of number of nodes, transmission distance, and communication speed limit its application, especially the application of large-scale access control systems. The access control system based on TCP/IP network communication has the advantages of no-node restriction, wide coverage, fast communication and small interference, etc., and is fully ahead of the RS485 bus system, which naturally will be favored by many users, especially large-scale access control system users.

It must be noticed that some access control systems using external or built-in network converters in the market are actually using RS485 to TCP/IP intermediate devices, which are not truly network access control. In the true sense of the network access control, the access controller generally uses a 32-bit ARM7/9 microprocessor.

The access control system adopting the full TCP/IP method can make full use of the established network resources. The amount of new wiring works is small. It can be used across regions without distance limitation, and information transmission and storage capacity can be greatly improved. However, if the project does not have a network, the special installation of the network will increase the cost of the initial investment. At present, more than 100 large-scale systems are mainly used.

The other aspect of technology development is the integration of access control systems and other security systems, mainly integrating video surveillance systems, intrusion alarm systems, perimeter detection systems, fire alarm systems, and building automation systems. This combination provides an effective structure to enhance each system's complementarity. For example, once there is an event that triggers an alarm, it will send a signal to the video surveillance system to provide real-time recording of the incident scene, and the linked access control system will block the corresponding access control channel.

In addition, the integration of access control and the one-card system will be closer, the scope will become wider and wider, and it will penetrate into all areas of society and play an increasingly important role. In addition to access control, attendance, documents, patrolling, dining, consumption, fitness, medical care, parking, book information, meeting attendance, visitor management, elevator control management, office equipment management, clubhouse entertainment, three watches and property payment, etc. It also performs necessary integration and linkage with other intelligent systems, such as anti-theft alarms, closed-circuit monitoring, fire alarms, and even building automation systems. In addition, the system will also make data interfaces with systems such as ERP, such as attendance and payroll, personnel management, and other interactive data, which are mutually supportive.