Tire pressure monitoring method based on ABS (Antilock Brake System) wheel speed sensor signal

A technology of wheel speed sensor and air pressure monitoring, which is applied in tire measurement, tire parts, transportation and packaging, etc.

Inactive Publication Date: 2011-07-06
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings of complex processing methods and insufficient alarm sensitivity in the prior art, the present invention provides a simple processing method and high sensitivity based on ABS wheel speed Tire pressure monitoring method based on sensor signal

Method used

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  • Tire pressure monitoring method based on ABS (Antilock Brake System) wheel speed sensor signal
  • Tire pressure monitoring method based on ABS (Antilock Brake System) wheel speed sensor signal
  • Tire pressure monitoring method based on ABS (Antilock Brake System) wheel speed sensor signal

Examples

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Embodiment

[0078] see figure 1 , after the system starts running, input various parameters, set the sampling time as 20s, the theoretical radius of each tire Both are 307mm, the number of teeth of the speed sensor corresponding to each tire Both are 40. In the benchmark travel determination procedure, the minimum vehicle speed is set to 20km / h, and the set sampling times for 5. The minimum vehicle speed set in the monitoring and judging program is also 20km / h, and the comparison threshold set by the system is set =0.9%, =0.8%, 0.5%. In the determination of abnormal tire pressure, set the sample size =5, tire pressure abnormal alarm ratio threshold =0.55.

[0079] During operation, the system first judges whether it is in the standard itinerary determination program or the tire pressure monitoring program. If the system determines that it is in the standard itinerary determination program, it executes the standard itinerary determination program. For details, see the embo...

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Abstract

The invention relates to a tire pressure monitoring method based on an ABS (Antilock Brake System) wheel speed sensor signal, and aims at providing a tire pressure monitoring method based on an ABS (Antilock Brake System) wheel speed sensor signal, which has simple processing method and high sensitivity. The tire pressure monitoring method comprises the steps of: processing a signal output by a wheel speed sensor, figuring out a virtual stroke of each tire by using the processed pulse signal, judging the tire with abnormal pressure through comparing the virtual strokes of the tires and comparing respective virtual strokes and the reference strokes of the tires, sending an alarm and determining the turn, the drive slip and the brake working condition of the vehicle. The alarm is automatically sent when the system judges that the pressure of the No.n tire is abnormal to remind a driver of keeping driving at a normal tire pressure, and the tire burst accident can be effectively prevented.

Description

Technical field [0001] The invention involves the field of automobile safety monitoring. More specifically, the invention is about a tire pressure monitoring method based on ABS rotor -speed sensor signal. Background technique [0002] Tire explosion is one of the important causes of malignant traffic accidents.The tires are driving under normal air pressure, especially under low air pressure. The tire rolling resistance increases, deforms, and the temperature increases sharply at high speeds, which can easily cause tires.The tires have continuously enhanced information before the tire burst. Monitoring and analysis of this information can make judgments to the pressure state of the tire.The size of the tire pressure directly affects the rolling radius of the tire, and the rolling radius of the tire directly affects the number of pulses issued by the speed sensor.Through the processing calculation of the pulse number, you can find reasonable comparative information. Using the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/02
Inventor 刘全有丁勇杨安志金吉刚翟洪军郭梦梦李书福杨健赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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