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A method for verifying commercial wheel speed signals

A signal verification and wheel speed technology, applied in the direction of brakes, etc., can solve the problems of inconsistent pulse frequency of four-wheel wheel speed, interference of driver's driving behavior, distortion of vehicle speed and mileage, etc., to facilitate troubleshooting and repair, and simple detection method Effective and avoid false triggering of the alarm effect

Active Publication Date: 2022-03-11
NANJING AUTOMOBILE GROUP CORP +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Once the model of a certain wheel ring gear is wrong, it will lead to the inconsistency of the pulse frequency of the collected four wheel speeds
On the one hand, the vehicle speed and mileage displayed on the instrument are distorted; on the other hand, when braking, the ABS misjudges the wheel with a small number of teeth on the ring gear as having a tendency to lock, and then continuously performs anti-lock brake intervention on the wheel, which affects the entire vehicle. Braking effect, which interferes with the driver's driving behavior
[0003] Wrong ring gear and tire model does not affect the off-line inspection of the whole vehicle. Once the problematic vehicle enters the market, it may cause major after-sales problems

Method used

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  • A method for verifying commercial wheel speed signals
  • A method for verifying commercial wheel speed signals
  • A method for verifying commercial wheel speed signals

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Embodiment Construction

[0030] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION The scope of the invention is not limited by the specific embodiments.

[0031] Unless otherwise clear, otherwise, in the entire specification and claims, the term "comprising" or "including" or "comprising" or the like will be understood to include the components or components of the present, and Other components or other components are not excluded.

[0032]A rotational signal check method, real-time detection and fault diagnosis of wheel signals. The working steps include: After the vehicle travel speed exceeds 15km / h, the ABS controller performs the collected wheel speed signals as follows every 1 second, and obtains the front axle speed ratio coefficient k. f , Rear axle speed ratio coefficient k r , Continuous calculation 10 times:

[0033]

[0034]

[0035] In V 1 Left front wheel speed, V 2 For the right front wheel speed, V 3 For the left rear wheel speed, V 4 For the right rear wheel speed;

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Abstract

The invention discloses a wheel signal verification method, which realizes real-time on-line detection and fault diagnosis of the wheel signal by setting an abnormal wheel speed threshold and a monitoring cycle and analyzing the wheel speed signal proportional coefficient, and then judges whether the ring gear model is correct.

Description

Technical field: [0001] The present invention belongs to the field of automobile driving speed check technology, and more particularly to a commercial vehicle speed signal check method. Background technique: [0002] The vehicle speed of the commercial vehicle is mainly through the pulse voltage signal generated by the wheels and the ring gear, and then converted to the ABS control module. The number of commercial car ring gears usually has three specifications of 60, 80, 100 tooth. Due to the special market demand for commercial vehicles, there is a large number of installed dimensions, and the number of teeth of the ring gear is different. Once a wheel ring gear model is wrong, it will result in inconsistencies of the acquisition of four-wheeled gear pulse. On the one hand, the vehicle speed and mileage distortion caused by the instrument; on the other hand, when braking, ABS determines the tendency of the ring gear tooth, and then constantly performs anti-lock intervention, af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/172
CPCB60T8/172
Inventor 张承龙许国林乔璐璐张春龙章俊
Owner NANJING AUTOMOBILE GROUP CORP
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