Control system of building talkback indoor device

A control system and building intercom technology, applied in the direction of closed-circuit television system, etc., can solve the problems of high cost of building intercom system, inconvenient after-sales maintenance, etc., and achieve the effect of improving anti-interference ability, reducing equipment cost and reducing equipment damage.

Active Publication Date: 2012-01-18
厦门ABB智能科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Since each indoor unit needs to be equipped with a separate control system, the cost of the entire building intercom system is too high, and it is inconvenient to carry out after-sales maintenance

Method used

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  • Control system of building talkback indoor device
  • Control system of building talkback indoor device
  • Control system of building talkback indoor device

Examples

Experimental program
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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to figure 1 As shown, a building intercom indoor unit control system of the present invention includes a system bus interface 11, a power conversion circuit 21, an indoor unit power supply circuit 22, a video input impedance matching circuit 31, a video output drive circuit 32, and an audio duplex communication circuit 4. Two multiplex switches 51 and 52, audio power amplifier circuit 53, data communication transceiver 6, microprocessor (MCU) 7, status indicator light 8, level status detection circuit 9 and at least two indoor unit interfaces 12 (take two as an example in this embodiment), which are connected between the system bus and at least one indoor unit, wherein each indoor unit includes a microphone, a speaker or a receiver, a microphone amplifier circuit, a status indicator light, a differential video The input-to-singl...

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Abstract

The invention discloses a control system of a building talkback indoor device, which comprises a system bus interface, a power-switching circuit, a power supply circuit of the indoor device, a video input impedance matching circuit, a video output drive circuit, an audio duplex communication circuit, an audio power amplification circuit, two multi-way option switches, a data communication transceiver, a microprocessor, a interface status indicating lamp, a electric level state detection circuit and at least two indoor device interfaces; the power supply circuit of the indoor device provides the indoor device with the power supply with various voltages; the video input impedance matching circuit and the video output drive circuit provide the indoor device with the video signal access; the audio duplex communication circuit, the audio power amplification circuit and the multi-way option switches provide the indoor device with the two-way audio signal access; and the microprocessor is connected with the data communications transceiver and the electric level state detection circuit, thereby achieving the state detection and control of the indoor device. The control system is shared bya plurality of indoor devices, thereby reducing the cost of the device, and has functions of failure isolation and video transmission compensation.

Description

technical field [0001] The invention relates to a building intercom indoor unit control system. Background technique [0002] At present, the control system of the building intercom indoor unit is set in each indoor unit, and each indoor unit has a set of such a control system, which receives instructions or states from other devices in the building intercom system through the system bus, and according to these instructions or status to control the indoor unit, and feed back the status information of the indoor unit to other devices in the building intercom system. Since each indoor unit needs to be equipped with a separate control system, the cost of the entire building intercom system is too high, and it is inconvenient to carry out after-sales maintenance. [0003] In view of the above analysis, the inventor conducted research and improvement on the control system of the current building intercom indoor unit, and this case arose from it. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18
Inventor 周大林郑耀斌李华坪陈金树张仰鹏
Owner 厦门ABB智能科技有限公司
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