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Method for judging simultaneous air shortage of four wheels of vehicle

A vehicle, air-deficient technology, applied in vehicle parts, tire measurement, tire parts and other directions, can solve problems such as user inconvenience, low accuracy, false alarms, etc., to achieve fast alarm speed, high reliability and accuracy, The effect of saving money

Active Publication Date: 2021-10-01
常州禄安汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also a method of using frequency spectrum analysis to judge tire pressure. Although this method can solve the problem of four-wheel lack of air at the same time, the accuracy is not high, and false alarms often occur, causing inconvenience to users.

Method used

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  • Method for judging simultaneous air shortage of four wheels of vehicle
  • Method for judging simultaneous air shortage of four wheels of vehicle
  • Method for judging simultaneous air shortage of four wheels of vehicle

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Experimental program
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Embodiment 1

[0042] Such as figure 1 As shown, the present embodiment provides a method for judging that four wheels of a vehicle are simultaneously lacking in air, which includes:

[0043] Step S1. Obtain the real-time speed signal of the vehicle through the vehicle-mounted GPS sensor and filter it to obtain the real-time GPS speed V gps ;

[0044] Step S2, obtain the real-time wheel speed signal through the vehicle-mounted ABS wheel speed sensor and filter and process it to obtain the real-time left front wheel speed V1, right front wheel speed V2, left rear wheel speed V3, and right rear wheel speed V4;

[0045] Step S3, according to the GPS speed and the speed of the four wheels when the four wheels of the vehicle are normal, the preset conditions for judging whether the four wheels are in abnormal working conditions at the same time are obtained through self-study;

[0046] Step S4, according to the preset condition of whether the four wheels are in abnormal working conditions at th...

Embodiment 2

[0069] Such as figure 1 As shown, on the basis of judging whether the four wheels in the first embodiment are in abnormal working conditions at the same time, this embodiment also provides a method for judging that the tire pressure of the four wheels is too high at the same time:

[0070] Step S6, when the four wheels are in abnormal working conditions at the same time, judge whether the tire pressure of the four wheels is too high at the same time, and output the judgment result to an alarm, including the following steps:

[0071] When the four-wheel tire pressure is too high at the same time, the average value of the two front wheel speeds V1 and V2 is set as V, if (Vgps-V)>(Δ1+C), where C is a constant, and |V1- When V3|≤Δ3 and |V1-V4|≤Δ4, it is considered that the tire pressure of four wheels is too high at the same time; otherwise, it is not a working condition of excessive tire pressure of four wheels at the same time, and the judging and monitoring of high tire pressur...

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Abstract

The invention discloses a method for judging simultaneous air shortage of four wheels of a vehicle, which is characterized by comprising the following steps of: S1, acquiring a real-time speed signal of the vehicle through a vehicle-mounted GPS sensor, and filtering to obtain a real-time GPS speed Vgps; s2, obtaining a real-time wheel speed signal through a vehicle-mounted ABS wheel speed sensor and filtered, and obtaining the real-time left front wheel speed V1, the real-time right front wheel speed V2, the real-time left rear wheel speed V3 and the real-time right rear wheel speed V4; S3, according to the GPS speed and the speed of the four wheels when the four wheels of the vehicle are normal, obtaining a preset condition for judging whether the four wheels are in abnormal working conditions at the same time through self-learning; and S4, judging whether the four wheels are in a preset condition of abnormal working conditions at the same time. The invention provides a method for judging simultaneous air shortage of four wheels of a vehicle, which can judge whether the pressure of two front wheels is normal or not by comparing the speed of a GPS sensor with the speed of an ABS wheel speed sensor, and can judge whether the pressure of four tires is normal if the wheel speed difference between the front wheels and the rear wheels is within a certain range.

Description

technical field [0001] The invention relates to a method for judging the simultaneous air shortage of four wheels of a vehicle, which belongs to the field of automobile safety. Background technique [0002] At present, the traditional indirect tire pressure monitoring system relies on calculating the difference between the four ABS wheel speed sensors of the driving car to indirectly reflect the rolling radius of the tire, so as to judge whether the tire pressure of each tire is abnormal, but when the four tires are out of air at the same time This method fails. In addition, the method of spectrum analysis is used to judge the tire pressure. Although this method can solve the problem of four-wheel lack of air at the same time, the accuracy is not high, and false alarms often occur, causing inconvenience to users. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/06B60C23/00
CPCB60C23/061B60C23/00Y02T10/40
Inventor 张宇夏怀成张荣
Owner 常州禄安汽车科技有限公司
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