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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.

Active Publication Date: 2013-11-13
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is difficult to distinguish which type of device the controlled object belongs to when transferring multiple devices at the same time through the BACnet gateway. When doing integration, it is not clear what device parameters are read or modified, and the purpose of integration cannot be achieved.

Method used

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  • Central air-conditioning control method and device based on BACnet (building automation control net) object ID (identification)
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  • Central air-conditioning control method and device based on BACnet (building automation control net) object ID (identification)

Examples

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Embodiment Construction

[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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Abstract

The invention relates to a central air-conditioning control method based on BACnet (building automation control net) object ID (identification). According to the method, the BACnet object ID is defined, communications information transfer is carried through a BACnet gateway among equipment based on BACnet protocols, the BACnet object ID is shown in communication messages of the information transfer, and the state of controlled equipment is judged according to the comparison between each section of binary codes of the ID and the form of the defined BACnet object ID. The invention also relates to a central air-conditioning control device using the control method. The instance number part of the defined BACnet object ID is further defined, the specific identity information of the equipment is shown, one BACnet gateway can be used for transferring the communication of a plurality of devices and a control center, the gateway cost is saved, and the engineering wiring is simplified.

Description

technical field [0001] The invention relates to the field of intelligent building control systems, in particular to a central air-conditioning control method and device based on a BACnet object ID. Background technique [0002] Central air-conditioning system, elevator monitoring system, lighting system, power transformation and distribution system, fire monitoring, security monitoring, etc. are integrated in the intelligent building system using the BACnet protocol. In theory, each individual product has its own BACnet protocol interface for connection. into the intelligent building system. But usually, many products do not consider the issue of building integration in the design stage. Once there is such a need, the usual practice is to add a BACnet gateway, which is equivalent to a router, to process and transfer the original product, thereby providing BACnet Protocol interface, and there is often a need to transfer multiple similar and similar products through the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00H04L29/08
Inventor 龚钊潮赵志刚林成霖龙波宋海川
Owner GREE ELECTRIC APPLIANCES INC
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