Central air-conditioning control method and device based on BACnet (building automation control net) object ID (identification)
A technology of central air conditioning and control methods, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc. It is difficult to distinguish which type of equipment the controlled object belongs to, so as to simplify the engineering wiring and save the cost of the gateway.
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[0027] like figure 1 As shown, the communication between the indoor unit and the outdoor unit of the central air-conditioning multi-unit unit and the control center is transferred through the BACnet gateway. There are two outdoor units in the network, namely outdoor unit 1 and outdoor unit 2, and there are four indoor units. , are respectively indoor unit 11, indoor unit 12, indoor unit 21 and indoor unit 22, wherein the outdoor unit of indoor unit 11 and indoor unit 12 is outdoor unit 1; the outdoor unit of indoor unit 21 and indoor unit 22 is outdoor unit 2.
[0028] The network connection method is: the communication part of each indoor unit and the corresponding communication part of each outdoor unit are connected in parallel to the BACnet gateway, and the gateway is connected to the control center, and the data is transmitted with the indoor unit and the outdoor unit through the BACnet protocol interface. For 32-bit BACnet, first further define the instance number of the...
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