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Steering wheel control system based on a constant current source and a learning method thereof

A control system and steering wheel technology, which is applied to the steering control, steering control, steering mechanism and other directions installed on the car, can solve the problem of increased space occupied by devices and PCBs, and achieve the effect of saving number and

Active Publication Date: 2019-01-22
AMICRO SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above control circuit needs to use more external resistors, triodes and other components, which increases the area occupied by the circuit components and PCB.

Method used

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  • Steering wheel control system based on a constant current source and a learning method thereof
  • Steering wheel control system based on a constant current source and a learning method thereof
  • Steering wheel control system based on a constant current source and a learning method thereof

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Embodiment Construction

[0016] In order to illustrate the present invention more clearly, specific examples are given below for further illustration.

[0017] The embodiment of the present invention provides a steering wheel control system based on a constant current source. Compared with the prior art, the MCU of the steering wheel control system uses a constant current source plus an ADC sampling module, eliminating the need for a triode outside the MCU to connect to a pull-up target resistor. Structure. Such as image 3 As shown, the steering wheel control system includes an MCU and a steering wheel controller, and the inside of the MCU includes a constant current source module and an ADC sampling module, wherein, inside the MCU, the signal output terminal of the constant current source module is connected to the ADC sampling module The signal sampling terminal is connected, and a preset chip pin of the MCU is multiplexed, and the preset chip pin is used as the sampling pin of the ADC sampling mo...

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PUM

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Abstract

The invention discloses a steering wheel control system and a learning method based on a constant current source. The steering wheel control system comprises a steering wheel controller and an MCU integrated with a constant current source module and an ADC sampling module. The constant current source module is connected with the ADC sampling module, and a preset chip pin of the MCU is multiplexed.The MCU is connected with a steering wheel controller through the preset chip pin; when the MCU detects a key trigger signal inside the steering wheel controller, controlling the constant current source module to alternately switch the output current signals of different grades through the preset chip pins, At the same time, the ADC sample module is controlled to sample the t key value voltage ofthe triggered key on the same pin correspondingly, and the matching judgment is made, and the constant current source module is controlled to output the current signal of the selected matching gear on the same pin, thereby completing the detection and identification of the triggered key of the steering wheel controller.

Description

technical field [0001] The invention relates to the technical field of vehicle-machine controllers, in particular to a steering wheel control system circuit and a learning method thereof based on a multiplexing detection port of a constant current source. Background technique [0002] With the development of electronics, computers, and communication technologies, people have more and more demands on the functions of automobile driving assistance systems. The multi-function steering wheel is also changing with the development of technology, and various control buttons are on the steering wheel. , The multi-function steering wheel refers to the setting of some function keys on both sides or below the steering wheel, including navigation audio control, car phone, cruise control, air conditioning adjustment, airbags and shift paddles, etc. The advantage of the multi-function steering wheel is that the driver can directly control many electronic devices in the car on the steering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D1/04B60R16/023
CPCB62D1/046B60R16/0231
Inventor 林立
Owner AMICRO SEMICON CORP
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