Unreturned warning system for vehicle wheels in non-driving state

Abstract

The invention discloses an unreturned warning system for vehicle wheels in a non-driving state, and belongs to the technical field of automobile safety. The invention maximizes the use of conventionalvehicle units to provide the unreturned warning system for vehicle wheels in a non-driving state with a more reasonable, accurate and comprehensive logical flow by only adding one LED warning lamp. In the process, a plurality of situations that easily cause false alarms and unnecessary interference to a driver are fully considered. The overall composition of the system includes a power supply unit composed of a storage battery and a generator, a sensor unit composed of vehicle wheel speed sensors, EPS torque sensors, a transmission gear sensor, a brake pedal position sensor and door lock sensors, a warning unit composed of a sound warning module and an LED warning module, an automobile electronic control unit and an electromagnetic switch.

Description

technical field [0001] The invention relates to a non-alignment warning system for automobile wheels, in particular to a non-alignment warning system for automobile wheels in a non-driving state, and belongs to the technical field of automobile safety. Background technique [0002] In the vehicle driving system, the caster and inclination angles are generally set for the kingpin (or virtual kingpin) of the steering wheel. This structural design can help the driver to automatically return the wheel after steering. The person takes the initiative to remove the steering torque on the steering wheel and the vehicle must be in a driving state. If the driver turns on the spot when the vehicle is stationary, the steering wheel will not be able to automatically return to alignment at this time. [0003] If the vehicle is in a state where the wheels are not aligned for a long time, it may cause the following damage to the vehicle: [0004] 1) The mechanical structure in the steering...

AI Technical Summary

Problems solved by technology

[0004] 1) The mechanical structure in the steering system will be under stress, which will easily cause fatigue of parts and loose transmission in the long run;

[0005] 2) In the suspension system, the left and right sides of the body are in different heights, which will easily cause the level of the body to deteriorate, the frame to deform, and the vehicle to no longer drive in a straight line if things go on like this;

[0006] 3) The tire tread is in full contact with the ground only when the tire is running in a straight line. At this time, the amount of wear is the smallest. When the angle difference between the wheel and the direction of the front of the car appears, the tire shoulder will directly contact the ground, which will cause aging and damage to the tire in the long run. abnormal wear and tear;

[0007] 4) When the vehicle is started, if the driver does not find that the steering wheel is not returning to the right position, it is easy to cause a scratch accident with surrounding vehicles or pedestrians

[0009] After searching the existing technical documents, it was found that the patent document with the announcement date of 2015.06.10 and the announcement number 204383562 and the patent document with the announcement date of 2014.10.15 and the announcement number 203876653 disclosed that only the vehicle speed signal and the steering wheel angle signal are used to carry out vehicle unplanning. Research on the back-to-alignment alarm system, due to the free travel of the steering wheel and the wear and looseness after long-term use, the steering wheel angle signal cannot accurately indicate the amount of non-alignment of the wheel; the announcement date is 2016.08.10, and the patent document with the announcement number 205440533 is published Although the gear position signal is added to the wheel unaligned system, it is easy to cause false alarms when the driver is waiting for a red light; the announcement date is 2015.12.30, and the patent document with the announcement number 105197111 discloses the wheel unaligned alarm The system sets a time threshold when the steering angle of the steering wheel is not zero. When it is greater than this threshold, it will start to alarm. The reaction time and decision-making of emergencies will change greatly, so the fixed time threshold is prone to early alarm or untimely alarm, which will bring unnecessary interference to the driver

[0010] Based on the above analysis, it is found that there is still no reasonable logic flow, comprehensive consideration of the situation, and accurate signal acquisition warning system for the non-returning of the car wheels in the non-driving state.

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