Distributed real-time control building intercom system

A building intercom system, distributed real-time technology, applied in two-party line system stations, data exchange through path configuration, bus network, etc., can solve the problems of failure to achieve high reliability, real-time performance and maintainability , to achieve the effect of high use value and application prospect, reliable work and simple structure

Inactive Publication Date: 2011-07-27
崔莉莉
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Problems solved by technology

"Although this patented technology proposes a video switcher based on CAN bus, it has not yet met the needs of engineering applications such as high reliability, real-time performance and maintainability.

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  • Distributed real-time control building intercom system
  • Distributed real-time control building intercom system
  • Distributed real-time control building intercom system

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Embodiment Construction

[0016] The technical solutions of the present invention will be further explained below in conjunction with the drawings and embodiments, but the following content is not intended to limit the protection scope of the present invention.

[0017] The invention provides a building intercom system. The whole system adopts the hierarchical distributed control principle and organically combines many functions. The whole system has two levels of control, divided into main network control and sub-network control. Each CAN bus intelligent node in the system is equipped with a sub-network in the building. In order to save costs, the sub-network generally adopts RS-485 bus for networking. CAN intelligent nodes not only need to be responsible for the data exchange between the sub-network inside the building and the main network outside the CAN bus building, but also be responsible for the switching of audio and video channels.

[0018] The function and type selection of each component of...

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Abstract

The invention discloses a distributed real-time control building intercom system, which comprises a main network and a sub-network. Each intelligent node of a controller area network (CAN) bus in the system is configured with the sub-network inside a building; the sub-network adopts a recommended standard 485 (RS-485) bus for networking; the intelligent node of the CAN bus is used for data exchange between the sub-network inside the building and the main network of the CAN bus outside the building and for switching between audio and video channels simultaneously; the intelligent node of the CAN bus adopts a microprocessor, namely a digital signal processor (DSP), into which an enhanced controller area network (ECAN) module is embedded; the ECAN module receives and sends information based on a mailbox; and each message can be configured for sending or receiving the mailbox. Based on a grading distributed control principle, the distributed real-time control building intercom system combines the high speed of the DSP with the high reliability, real time and maintainability of CAN bus communication effectively, so that the system is reliable in operation and good in anti-interference performance and can meet requirements of engineering application completely.

Description

technical field [0001] The invention relates to an intercom system in the technical field of intelligent communities, in particular to a building intercom system with distributed real-time control. Background technique [0002] In recent years, due to the development of network technology, building intelligence has quietly emerged in the user areas of various instruments and meters. The original intelligent community was divided by function, including building intercom, monitoring and monitoring, perimeter defense, etc., and each system was relatively independent. There are only simple zone alarms in the room. When the system has better networking technology, the alarm can only be reported to the management center, and real remote monitoring cannot be realized. With the gradual approach to the world's security field, our concept of community intelligence has gradually become clear. A real smart community should be a community that can realize home intelligence, internal se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q5/24H04L12/40
Inventor 崔莉莉
Owner 崔莉莉
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