Accelerator pedal detection method

Abstract

The invention discloses an accelerator pedal detection method which comprises the following steps of increasing two paths of accelerator pedal signals into three paths of signals; receiving three paths of practical voltage signals of an accelerator pedal by a VCU; judging the voltage range of the three paths of signals by the VCU; if no fault exists through voltage range detection, converting thevoltage value into a pedal open degree by the VCU according to a maximum value and a minimum value corresponding to each path of signals; performing pairwise checking on the accelerator pedal; comparing the current open degree of the accelerator pedal with a previous state for judging the increment direction; if the direction is different from other two paths, regarding the condition as a fault; summarizing all faults; and if the two paths have problems, regarding the open degree of the accelerator pedal as the open degree of the normal path. The system detection is performed through the voltage range, the pairwise checking of the pedal signals and the change quantity of the pedal; the accelerator pedal is detected; the safety of the accelerator pedal is improved; and through the multi-redundancy and detection strategies, the intention of a driver is ensured to a maximum degree.

Description

technical field [0001] The invention relates to the technical field of accelerator pedal detection, in particular to a method for accelerator pedal detection. Background technique [0002] Today, with the increasing popularity of new energy sources, people are paying more and more attention to the safety of cars, among which the accelerator pedal is an important device for expressing the driver's intentions, and its safety should be more worthy of our attention. However, the current patent only considers the two-way pedal inspection. However, when there is a failure in one of the two-way inspections, although it can be judged that the accelerator pedal is faulty, it can only enter the Limp-home mode or according to the small opening. The accelerator pedal is used to drive, but it is impossible to specifically identify which road is faulty, and the driver's intention cannot be properly reflected, which seriously affects the driver's experience. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0003] An accelerator pedal detection method proposed by the present invention can detect which accelerator pedal signal is faulty and at the same time ensure that the accelerator pedal can normally respond to the driver's intention, and at the same time increase the safety of the accelerator pedal, and solve the problem proposed in the above-mentioned background technology. The current patent only considers the two-way pedal inspection. However, when there is a failure in one of the two-way inspections, although it can be judged that the accelerator pedal is faulty, it can only enter the Limp-home mode or accelerate according to the small opening. The pedal is used to drive, but it is impossible to specifically identify which road is faulty, and it cannot respond to the driver's intention normally, which seriously affects the driver's experience.

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