Application of multi-point distributed access control-network access control solution based on no fixed IP
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1. Project background
With the development of the network, more and more companies are not in a corner, and branch offices are blooming all over the country and even the world. How to manage the personnel in different areas in a unified manner, issue cards to office personnel remotely, check the attendance of the branch office immediately, and how to call the headquarters immediately when the telecommunications base station is unattended? Become a headache. Each office may not even have a fixed IP, and the network access control on the market simply does not meet the requirements.
2. System overview
The SEMAC system developed for remote network access control can easily solve all these problems. The traditional system has the server side to fetch data from the client side, but SEMAC breaks this traditional practice, from the client side to the server side to send data instantly, only set the server’s IP or dynamic domain name in the client side, and install one on the server’s PC Access control software, so that access control information, entry and exit records, and alarm information will be sent to the server in real time. This solves the problem of long time and network delay caused by traditional servers to fetch data on one machine after another. And when there is an abnormality or alarm information, in addition to linking the alarm, you can also send the alarm information in the form of E-mail. With the implementation of 3G in the mainland, the mobile Internet service has gradually developed. If the mobile phone is associated with the mailbox, this function will be It can play its role to notify relevant people of alarm information at any time without being guarded. SEMAC supports network camera settings, install a network camera next to each door controlled by SEMAC, and then every time you swipe the card, it will transmit the image to the server. You can set the client to not open the door by swiping the card, and only upload the image to the server, and then the security guard next to the server will open the door to the client remotely after confirming the identity.
SEMAC is as powerful as the network function under multi-door control. SEMAC can continue to add doors to match the BF-50 sub-controller according to the customer’s intentions. There is no need to buy other controllers, and at least eight doors can be connected. Unique sub-control security design, when the main control is out of connection, in addition to the opening button can still be activated, each sub-control door can still provide specific people in and out, up to 50 card numbers. In a local area network, each SEMAC can be filled with the IP of its next SEMAC, so that in the case of multiple doors, unlimited anti-passback levels can be achieved, and only one gets the update of the time server, it will Automatically pass in to its next machine, and cycle through it, and when there is a fire alarm signal input, all the doors of its next IP machine will also be opened automatically, except for all doors controlled by this controller. , A linked alarm function is realized.
Three, the solution
A mobile phone manufacturer in Shenzhen needs to manage the access control and attendance of 67 offices across the country, which are located in different cities across the country. The entire solution uses 67 SEMAC terminals on the client side and SOMAC access control software on a PC on the server side to realize a C/S structure management. SEMAC has a built-in web server, which is convenient for local offices to query and modify settings.
I learned that some offices have dozens of people, and some have only a few people, and basically there are no fixed IPs. If you want each office to apply for a fixed IP, it will cost a lot. Considering a fixed IP on a PC machine in the headquarters, of course, it can also be in the form of a dynamic domain name, where the headquarters has this IP resource. Then fill in the IP of the PC at the headquarters that day in each SEMAC in the office. A list of these machines will automatically appear on the server software of the headquarters, and the records of each machine will be transmitted to the software in real time, including the images taken by the cameras.
Four, system composition
The system consists of 67 SEMAC single-door controllers, 4 SEMAC eight-door controllers in the headquarters, and 95 card readers. Among them, 28 doors in the headquarters realize multi-door control. One controller drags 7 doors, and each controller is linked to each other.
System diagram:
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