Analysis of the function of the wireless video intercom system with the mobile phone signal screen
1. For residential areas and villas, it is generally used: digital repeater, walkie-talkie, transmit combiner, receive splitter, broadband high-power duplexer, coupling divider, power divider, trunk amplifier, indoor Antennas, outdoor antennas, connectors, etc.
2. For hotels and office buildings, it is generally used: digital repeaters, walkie-talkies, transmit combiners, receive splitters, broadband high-power duplexers, coupling dividers, power dividers, trunk amplifiers, Indoor antennas, connectors, etc. Of course, the equipment used in different projects is similar, and there may be only some differences.
Wireless intercom system construction plan
1. Layout and installation of wireless intercom antenna feeder system
All antennas and couplers are installed indoors, and the position of the antennas can be adjusted appropriately according to the indoor structure during construction. In order not to affect the beauty of the decoration, the ceiling antenna should be installed in the ceiling as much as possible, and it can be installed under the ceiling if the conditions cannot be met.
The feeder in the ceiling of each floor is fixed on the keel iron frame in the ceiling, and the place without the ceiling can be fixed and installed on the wall. The layout of the feeder shall be neat and beautiful, and shall not be crossed, twisted or cracked. The bending radius should conform to the technical specifications of the feeder.
2. Power system
220V+20%, 50HZ+10% AC power is used for the installation of active equipment in the indoor distribution system of each site.
3. Grounding system
The front end or active device of the distribution system is equipped with a feeder grounding piece, and the grounding piece should be well connected to the building grounding network. The bending angle of the grounding wire is required to be greater than 90 degrees, the radius of curvature is greater than 130mm, and the grounding resistance is less than 5Ω.