Household electrical appliance centralized control system

Abstract

The invention discloses a household electrical appliance centralized control system comprising a household electrical appliance which is provided with an MCU used for executing functions of the household electrical appliance; at least two protocol centralized controllers, respectively connected with one path of UART bus of the MCU through a driving circuit. One protocol centralized controller is suitable for one communication protocol, and each protocol centralized controller can inquire and control the state of the household electrical appliance. The centralized control system is configured as follows: priorities of household appliances and all protocol centralized controllers are set in advance. When the instruction sending time of each protocol centralized controller is not conflicted,the household electrical appliance responds to the sent instructions according to a time sequence, and when the time of sending the instruction by each protocol centralized controller conflicts, the household electrical appliance responds to the sent instruction according to the priority sequence. Communication of different centralized control protocols is achieved through the UART serial port connected with the port of the household electrical appliance side MCU and the MCU, centralized and differentiated management of household electrical appliances is facilitated, and the use experience ofa user is improved.

Description

technical field [0001] The invention relates to the technical field of centralized control of household appliances, in particular to a centralized control system of household appliances. Background technique [0002] Household appliances, such as central air conditioners, office building access control, etc., have a set of centralized control methods to monitor their own status, which is convenient for centralized management. However, with the demand for intelligence, they hope to be able to access third-party smart home devices for differentiated settings . [0003] For example, the central air-conditioning centralized control method has long adopted the HomeBus (ie, home bus system) communication method. This communication method is stable and reliable, and there is no need to consider polarity for grounding. machine to communicate. [0004] However, with people's demand for intelligent central air-conditioning products, third-party smart home devices can be connected to...

AI Technical Summary

Problems solved by technology

[0005] At present, the centralized control function of central air-conditioning products can only support one of the two, and cannot support two protocols at the same time, for example, either support the HLINK protocol of the HomeBus bus, or support the 485 protocol of the MODBUS bus

However, in practice, users sometimes require unified management of air conditioners through HomeBus centralized control to monitor the status of air conditioners in multiple bus systems, and at the same time require the air conditioners in each bus system or each air conditioner to be differentiated. It can be privatized and customized through third-party smart home devices or APP, which conflicts with the centralized control function on existing air-conditioning products and reduces user experience

[0006] In order to solve the above problems, multiple UART serial ports for communication with household appliances are needed. In this way, not only the resources of multiple MCU ports of household appliances are occupied, but also the MCU processes multiple centralized control commands at the same time, which cannot guarantee the operation stability of household appliances.

Or use a protocol converter that supports the coexistence of multiple protocols, but this method still needs to pass through multiple UART serial ports, and this solution focuses on the coexistence of multiple protocols, which is convenient for centralized management, but there are many inconveniences in the intermediate transfer communication protocol, resulting in increased costs

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