Abstract: At present, most of the building intercom systems produced by manufacturers, the system communication control technology is mainly fieldbus technology or manufacturers custom system communication control technology, widely used R

Selection of integrated wiring accessories in building intercom system

Network topology

At present, most of the building intercom systems produced by manufacturers, their system communication control technology is mainly fieldbus technology or customized system communication control technology, commonly used RS485 bus technology, CAN bus technology, LONWORKS bus technology, so usually its wiring topology is bus. That is, many control units can be connected in series on the 2-core wire, rather than using the general integrated wiring system, but using the star topology, requiring each 8-core wire can only be connected to one device, if the building intercom system also uses the star topology, it will require a large number of cables, thus making the cost of the entire system soar, resulting in a serious waste of human and material resources.

Selection of integrated wiring accessories in building intercom system: selection of cables and accessories

The selection of cables and accessories needs to start from the practical application, and consider the room for future development and investment costs to ensure the quality of installation. The choice of cable is particularly important, because the network wiring system is a one-time long-term investment, and after the wiring is completed, it is difficult for users to allow secondary wiring, and the choice of cable is inappropriate, which has a very important impact on the bit error rate, and also affects the transmission performance of the system channel, which will seriously affect the debugging and operation, so we must carefully choose a good cable. Ensure the quality of the cable.

How to ensure the quality of the installation, in addition to the quality of the wiring system itself (usually guaranteed by the manufacturer, and usually not the main cause of the problem), whether it is class 3, class 5, class 5 or class 6 cable systems, must be completed through construction installation, and the construction process has a great impact on the performance of the cable system.

Even if a high-performance cable system is selected, such as super Class 5 or Class 6, if the construction quality is rough, its performance may not reach the index of Class 5.

Therefore, no matter what level of cable system is selected to be installed, the final result must achieve the corresponding performance, that is to say, the installation of the cable system needs to carry out the relevant standard certification test to ensure.

The current situation is that the 5 type twisted pair system has certification standards to follow, and the super 5 type system has standards issued by the end of 1998.

The final release of the six types of wiring standards is of great significance, it marks the maturity of the six types of products, the basis for certification testing, the user's investment has a more reliable guarantee, and further promote the development of network media and networks.

[Cloud vision Shield Electronics] Technology Co., LTD., 0311-87726248, building intercom, video intercom, building manufacturers, building prices, intelligent home system, access control system manufacturers.