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CAN communication method and system for controlling local area network and air conditioning system

A technology for controlling local area network and CAN communication, which is applied in the field of non-polar communication of control local area network, can solve the problems of complex circuit of non-polar CAN communication system, and achieves the effect of simplifying the circuit and solving the complex circuit.

Active Publication Date: 2020-01-17
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a CAN communication method and system for controlling a local area network and an air-conditioning system, so as to at least solve the technical problem of complex circuits in the non-polarity CAN communication system in the related art

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  • CAN communication method and system for controlling local area network and air conditioning system
  • CAN communication method and system for controlling local area network and air conditioning system
  • CAN communication method and system for controlling local area network and air conditioning system

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a control area network (CAN) communication method and system and an air conditioning system. The CAN communication system comprises a CAN bus and multiple nodes connected to the CAN bus. The polarity of a node which satisfies a preset condition in the multiple nodes is used as the main polarity of the CAN bus. After the main polarity of the CAN bus is determined, the nodes except for the node which satisfies the preset condition in the multiple nodes follow the main polarity of the CAN bus. According to the control area network (CAN) communication method and system and the air conditioning system, a technical problem of circuit complexity of a non-polar CAN communication system in the related technology is solved.

Description

technical field [0001] The present invention relates to the field of non-polarity communication of a controller area network (CAN for short), in particular to a CAN communication method and system of a control area network and an air-conditioning system. Background technique [0002] There are usually two ways to implement the current non-polarity CAN circuit. One is to control the power supply of the CAN transceivers of each node in the CAN communication network through a central processing unit (Central Processing Unit, referred to as CPU), so as to realize the ability to control each The effect of switching the communication direction (polarity) of the node; the other is by setting a peripheral circuit that can switch the communication direction, and controlling the peripheral circuit through the CPU, thereby switching the communication direction of each node, for example, the peripheral circuit of each node A relay can be set in the relay, and the switching state of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L12/40
CPCH04L12/2803H04L12/40006H04L12/40169H04L2012/285H04L2012/40215H04L2012/40247
Inventor 李翠娟玉维友刘桂鹏
Owner GREE ELECTRIC APPLIANCES INC