The embodiment of the invention provides a steering wheel heating and hand-leaving detection system and method, a steering wheel and a vehicle, in the system, a heating pad is arranged in the steering wheel, and the exterior of a steering wheel framework of the steering wheel is sequentially wrapped with a first pad material layer, a heating emission layer, a second pad material layer, a hand-leaving detection sensor layer and an outer wrapping layer of the heating pad; when the main control chip receives a hand-leaving detection instruction, the main control chip controls the current-limiting transmitting branch, the heating pad and the signal receiving branch to form a closed loop so as to realize hand-leaving detection of the steering wheel; when the main control chip receives a steering wheel heating instruction, the main control chip controls the high-side control branch, the heating pad and the low-side control branch to form a closed loop so as to heat the steering wheel. As heating and emission share one layer, a signal carrier material layer and a pad material layer are saved, the thickness of the heating pad is reduced, and the cost is reduced. And the hand-leaving detection and the heating are time-division multiplexing, so that the interference of the heating on the hand-leaving detection can be reduced.
本发明实施例提供了一种方向盘加热及离手检测系统、方法、方向盘及车辆,该系统中加热垫设置于方向盘中,方向盘的方向盘骨架外依次包裹有加热垫的第一垫子材料层、加热发射层、第二垫子材料层、离手检测传感器层以及外包覆层;当主控芯片接收到离手检测指令时,主控芯片控制限流发射支路、加热垫和信号接收支路形成闭环回路,以实现对方向盘的离手检测;当主控芯片接收到方向盘加热指令时,主控芯片控制高边控制支路、加热垫和低边控制支路形成闭环回路,以实现对方向盘进行加热。由于加热和发射共用一层,所以节省了信号载体材料层和垫子材料层,减少了加热垫的厚度,降低了成本。且离手检测和加热是分时复用,可以减少加热对离手检测的干扰。
Steering wheel heating and hand leaving detection system and method, steering wheel and vehicle
一种方向盘加热及离手检测系统、方法、方向盘及车辆
2024-09-20
Patent
Electronic Resource
Chinese
Hand-leaving detection device for steering wheel, steering wheel and vehicle
European Patent Office | 2023
|Hand-leaving detection device for steering wheel and steering wheel
European Patent Office | 2023
|Steering wheel with hand-leaving detection function and steering wheel system
European Patent Office | 2021
|