Direct and indirect hybrid tire pressure monitoring and adjusting system and control method thereof

Abstract

The invention discloses a direct and indirect hybrid tire pressure monitoring and adjusting system. The system comprises: pressure sensors, which are arranged in wheels; a plurality of wheel speed sensors, which are fixed on the wheels in a one-to-one correspondence manner; a plurality of tire pressure regulating valves, which are mounted at tire valves in a one-to-one correspondence manner; and avehicle body controller, which is fixed on a vehicle frame and connected with the pressure sensors, the plurality of the wheel speed sensors, the plurality of the tire pressure regulating valves, a vehicle control unit and an instrument panel. The invention further discloses a control method of the direct type and indirect type hybrid tire pressure monitoring and adjusting system. Corrected wheelspeed signals are obtained according to different engine output torques, vehicle speeds, steering wheel rotating angles and accumulative vehicle mileage, the same function effect as a four-wheel direct type pressure sensor is almost achieved, and the current internal air pressure of each tire is accurately obtained.

Description

technical field [0001] The invention relates to the technical field of automobiles, and more specifically, the invention relates to a direct and indirect mixed tire pressure monitoring and adjusting system and a control method thereof. Background technique [0002] In recent years, with the continuous improvement of the level of the automobile industry, automobiles have already been integrated into all aspects of people's daily life, greatly improving travel efficiency, bringing great convenience to people, and promoting the development of the world economy. With the improvement of automobile performance, its maximum driving speed is getting higher and higher, but it brings many safety problems. Drivers and passengers begin to pay more attention to the safety of cars, so various active and passive safety technology functions emerge in an endless stream. As the only part of the vehicle in contact with the ground, the tire is the medium that transmits the force between the ve...

AI Technical Summary

Problems solved by technology

Since the indirect tire pressure monitoring adopts a relative monitoring method of comparison, it cannot obtain accurate tire pressure values, nor can it determine the exact location of the faulty wheel. At the same time, when the pressure of each tire is uneven, it cannot be accurately identified

In addition, it is seriously affected by road bumps, road types, tire types, ambient temperature, etc., the accuracy of indirect tire pressure monitoring is very limited, and false alarms and missed alarms are very common.

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