Distributed air conditioner control system

Abstract

The invention relates to the field of an air conditioner control system, and discloses a distributed air conditioner control system. The distributed air conditioner control system comprises a monitoring computer and a valve hall control module, wherein the valve hall control module comprises a main control building CPU, a repeater, a bus network, a first remote control substation and a second remote control substation. The bus network comprises a first optoelectronic isolation module, a second optoelectronic isolation module, a data sending circuit module and a communication interface module;the first remote control substation comprises a first I / O module, a first control CPU and a first control unit; and the second remote control substation comprises a second I / O module, a second controlCPU and a second control unit. According to the distributed air conditioner control system, a distributed control mode is adopted, so that the problem that all the whole air conditioning system stopsrunning due to faults of the control center or communication faults is avoided; and the RS-485 bus is less in equipment, small in communication data volume, so that slow reaction is not prone to occur.

Description

technical field [0001] The invention relates to the field of air-conditioning control systems, in particular to a distributed air-conditioning control system. Background technique [0002] Domestic and foreign research on the valve hall of HVDC transmission system mainly focuses on the structural design of the valve hall. For the air conditioning system used in the high-voltage DC valve hall, which is a strong electromagnetic field environment space, there are few researches on its stability and specific control effect. Research; the existing valve hall air-conditioning system adopts centralized control mode, and the failure of the control center or communication failure will cause the entire air-conditioning system to stop running, that is, the entire air-conditioning system uses a PLC controller, and the air-conditioning in other rooms adopts the remote substation mode, and The operation of the air conditioner cannot be controlled independently. Once the PLC controller in ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a distributed air-conditioning control system, which controls the air-conditioning and the valve hall in two groups, and then centralizes the control, so as to realize the effect of distributed control and solve the problem of traditional distributed air-conditioning control system. Centralized control mode, control center failure or communication failure will cause the entire air conditioning system to stop running. At the same time, due to the centralized control mode, there are many devices connected to the RS-485 bus for communication, and the amount of communication data is large, resulting in slow system response and other problems.

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