Method and device for intelligently controlling air-conditioner of automobile

Abstract

The invention mainly discloses a method and a device for intelligently controlling an air-conditioner of an automobile. The device comprises two main parts of an air-conditioner control module and an air-conditioner control panel, a CAN bus receiving-transmission drive circuit is also included, and the air-conditioner control module and the air-conditioner control panel exchange data in the CAN bus mode. air-conditioner control information is input into the air-conditioner control panel and then sent to a first singlechip, and then sent into the CAN bus; and after receiving a control command, the air-conditioner control module converts the control command into the corresponding executive command and transmits the executive command to a relay control output circuit, and the relay control output circuit carries out the executive command to make an air-conditioner relay operate, so that the state change of the air-conditioner is realized. A second singlechip simultaneously feeds back the change information of the air-conditioner to the CAN bus and after receiving the change information of the air-conditioner, the first single-chip microcomputer displays the change information of the air-conditioner by a display circuit. The device controls the operation of the automobile air-conditioner by adopting the controller meeting the SAE J1939 protocol so as to form closed loop control, and the device can share resources and information with the CAN modules of other systems of the automobile.

Description

technical field [0001] The invention relates to automobile air-conditioning control, in particular to an automobile air-conditioning intelligent control method and device. Background technique [0002] The existing automotive air-conditioning electrical control industry generally has two status quo: [0003] 1. At present, the electrical control form of automobile air conditioners basically uses more than a dozen control wire harnesses to control the air conditioner control box (relay box) through manual operation and temperature control of the air conditioner control panel, so as to achieve the control of the air conditioner evaporating fan, condensing fan, and compressor. clutch control. This kind of control wiring harness has heavy weight, many possible failure points, high cost of wiring harness, inconvenient installation of air conditioner, and the air conditioner cannot be used when the control panel and control wiring harness fail. [0004] 2. At present, a small nu...

AI Technical Summary

Problems solved by technology

[0005]1. The bus used is an open-loop control, which cannot truly reflect the operating status of the air conditioning system, and may even cause the system to lose control;

[0006] 2. The CAN communication protocol adopted is not the popular SAE J1939 protocol for passenger cars (automotive standardized serial protocol), and cannot realize resource sharing and information exchange with CAN modules of other systems in the car, for example: unified fault diagnosis

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