Automobile intelligent window switch based on LIN bus port

Abstract

The invention relates to an automobile intelligent window switch based on an LIN bus port. The automobile intelligent window switch based on the LIN bus port comprises a switch outer shell, a switch button and a built-in circuit board is characterized in that a power supply module, a signal collecting module, a micro controlling module and an LIN communication module are sequentially connected and compose the built-in circuit board. According to LIN technology of the window switch, an LIN port only is connected to an LIN bus of an automobile body. Wire harness cost is greatly saved and spaces inside an automobile are increased. Moreover, the function of automatic online failure diagnosis is achieved, failures can be rapidly detected and the number of controllers is reduced so that the window switch becomes a node of an LIN network instead of controlling in a traditional node-to-node mode. A programmed program is programmed into the controllers in the circuit board and a switch LIN pin is led out and hung on the LIN bus under the condition that power is normally supplied. Thus, the aim of lifting and lowering a window of the automobile by communication with the automobile body is achieved.

Description

technical field [0001] The invention belongs to the application field of automobile body electronic network control based on LIN bus technology, and relates to an automobile switch, in particular to an automobile intelligent window switch based on a LIN bus interface. Background technique [0002] Car window glass lifting, including driver's side window glass lifting, passenger side window glass lifting, left rear door side window glass lifting, right rear side window glass lifting. At present, the lifting of car glass has been changed from the initial manual lifting Developed to the current electric glass lift. The manual lift is hand-cranked. The driver or passenger can make the glass go up by shaking the handle forward, and let the glass go down by shaking the handle in the reverse direction, which is realized by the mechanical principle. With the development of automotive electronics technology, the current car window glass lift is basically electronically controlled. T...

AI Technical Summary

Problems solved by technology

[0004] 1. The frequent switching on and off of the relay will cause some electromagnetic compatibility problems, which will affect the normal operation of the electronic components around it

[0005] 2. The traditional window switch directly controls the current loop of the window glass lifting motor. The on-off current controlled by the switch contact is relatively large, and the current is in the ampere level, so the switch contact is easy to ablate and fail, and the reliability is poor.

[0006] 3. The traditional switch control is generally one-to-one control, so that each switch needs to be connected to the control object. If the distance between the switch device and the control object is relatively long, such a connection will obviously bring many disadvantages, such as increasing the number of vehicles. Heavy and costly, occupying the space in the car, the efficiency of information transmission is not high, and it is not easy to repair if a problem occurs

[0007] 4. The traditional car window only plays the role of signal collection and only gives the motor an action signal. It does not have the monitoring function of the motor running state. The specific running state of the motor needs to be completed by the motor controller.

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