Detection method for separation of hand from steering wheel, electronic control unit and detection system

Abstract

The invention discloses a detection method for separating a hand from a steering wheel, an electronic control unit and a detection system. The detection method is applied to the electronic control unit and comprises the steps that a driver hand torque value generated when a driver holds the steering wheel is acquired in a vehicle driving process; and when the duration that the hand torque value ofthe driver is smaller than the hand torque threshold value is larger than the duration threshold value, it is judged that the hand of the driver leaves the steering wheel. The detection method disclosed by the invention can be realized through an electric power steering system, and the electric power steering system is automobile standard configuration, so that an intelligent steering wheel doesnot need to be installed in a vehicle, a face recognition technology does not need to be adopted, the part development period is saved, the development cost is reduced, and the detection method is suitable for low-and-medium-cost vehicle types. Since whether the hand of the driver is separated from the steering wheel or not is directly determined based on the hand torque value of the driver, the situation of false alarm is reduced compared with the situation that whether the hand of the driver is separated from the steering wheel or not is indirectly determined based on whether the driver is fatigue or not.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, and more specifically, relates to a detection method, an electronic control unit and a detection system for hands leaving the steering wheel. Background technique [0002] With the improvement of living standards, cars have become the first choice for people to travel, and the frequency of traffic accidents has also increased. Safe driving is an issue that everyone needs to pay attention to. [0003] Today's traffic extends in all directions, especially on expressways, where there is usually a long section of straight-line driving. At this time, it is easy for the driver to relax his vigilance, and he may inadvertently put his hands down from the steering wheel and let the car drive straight. If this happens Certain emergencies, such as accidents such as wind blowing, wheel skidding, or even puncture, while hands are not on the steering wheel to grasp the direction, may easily lea...

AI Technical Summary

Problems solved by technology

[0005] The above two detections of whether the driver’s hands are off the steering wheel require the use of facial recognition technology and the installation of a smart steering wheel in the vehicle. Therefore, the development cycle of parts is long and the development cost is high, which is not applicable to low-cost and medium-sized models

Moreover, based on the technical means of determining whether the driver is out of the steering wheel based on judging whether the driver is tired, frequent false alarms are likely to occur

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