The problem to be solved by the present invention is to provide a steering device and a safe driving assistance system capable of discriminating contact between a foreign object and a steering wheel and contact between a hand of a driver and the steering wheel and determining, with high precision, whether the driver holds the steering wheel. In order to solve the problem, the present invention provides a steering device provided with: a steering wheel; a torque sensor that detects steering torque; a measurement circuit that measures the capacitance of an electrode part provided on the steering wheel; and a grip determination device that determines the presence or absence of a grip on the rim portion of the steering wheel. After determining that the steering wheel is gripped on the basis of the measurement result of the capacitance obtained by the measurement circuit, the grip determination device determines that the foreign matter contacts the rim portion and the rim portion is not gripped if the state in which the absolute value of the detection value Trd of the steering torque is less than a predetermined torque threshold value Trth continues to exceed a predetermined time threshold value Tth.
本发明要解决的问题是,提供一种区分异物与方向盘的接触和驾驶员的手对方向盘的接触而可以高精度地判定驾驶员对方向盘有无握持的转向装置及安全驾驶辅助系统。为了解决上述问题,本发明提供一种转向装置,其具备:方向盘;转矩传感器,检测转向转矩;测定电路,测定设置在方向盘上的电极部的静电电容;及,握持判定装置,判定对方向盘的轮缘部有无握持。握持判定装置在基于借由测定电路获得的静电电容的测定结果而判定为方向盘被握持后,在转向转矩的检测值Tr_d的绝对值小于规定的转矩阈值Tr_th的状态继续超过规定的时间阈值T_th的情况下,判定为异物接触轮缘部且轮缘部未被握持。
Steering device and safe driving assistance system
转向装置及安全驾驶辅助系统
2024-06-04
Patent
Electronic Resource
Chinese
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