Building video doorphone system and method

Abstract

The invention discloses a building video doorphone system and method. A doorphone of the system is connected with extension sets through an audio wire, a ground wire and a video wire. The extension sets are connected with power sources. The extension set which supplies power to the doorphone is the first extension set. After the audio wire is connected with a call key, the call key is grounded. After the audio wire is connected with a voltage detection circuit, the audio wire is connected with extension set micro-control units of the extension sets. The call key is connected with the audio line, when the call key is pressed, the voltage of the audio wire is changed, the voltage detection circuit detects the change of the voltage at this time and feeds back a detection result to the extension set micro-control units of the extension sets, and the first extension set supplies power to the doorphone, a video module is started, rings are given out, and a user is reminded to make a response.

Description

technical field [0001] The invention relates to the field of building intercom technology, in particular to a building visual intercom system and a method thereof. Background technique [0002] Traditional villa-type building video intercoms are basically multi-wire systems, at least power lines, ground lines, video lines, audio lines and call lines are required. The villa-type building video intercom system generally includes a door station and an indoor station. The indoor station is divided into a host and an extension. The chip controls the functional circuit of the extension through the main control circuit of the extension, and the host and the extension independently control their respective functional circuits. In this way, when producing indoor units, it is necessary to distinguish the hardware of the main unit and the extension, which increases the production cost; when the user installs the main unit and the extension, it is also necessary to distinguish the inst...

AI Technical Summary

Problems solved by technology

In this way, when producing indoor units, it is necessary to distinguish the hardware of the main unit and the extension, which increases the production cost; when the user installs the main unit and the extension, it is also necessary to distinguish the installation of the main unit and the extension, which increases the difficulty; Cost; at the same time, the outdoor station is charged and standby, which consumes a lot of energy and is not environmentally friendly

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