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A method and system for real-time detection of vehicle chassis distortion

A distortion degree, real-time detection technology, applied to vehicle components, circuits or fluid pipelines, complex mathematical operations, etc., can solve problems such as vehicle chassis damage

Active Publication Date: 2020-03-17
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to implement during driving, and inexperienced drivers under parking conditions may ignore this problem, and if things go on like this, it will cause damage to the vehicle chassis

Method used

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  • A method and system for real-time detection of vehicle chassis distortion
  • A method and system for real-time detection of vehicle chassis distortion
  • A method and system for real-time detection of vehicle chassis distortion

Examples

Experimental program
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Effect test

Embodiment 1

[0067] first combined with reference Figure 4 with image 3 The system for detecting the degree of distortion of the vehicle chassis in real time of the present invention is introduced.

[0068] Such as Figure 4 As shown, the real-time detection system of the vehicle chassis distortion degree of the present invention comprises a left front suspension height sensor 1 arranged on the left front suspension of the vehicle, a right front suspension height sensor 2 arranged on the right front suspension of the vehicle, and a left front suspension height sensor 2 arranged on the left front suspension of the vehicle. The left rear suspension height sensor 3 of the rear suspension, the right rear suspension height sensor 4 arranged on the right rear suspension of the vehicle, the electronic control unit 5, the vehicle speed sensor 6 and the reminder device 7, the electronic control unit 5 and each sensor and The reminder device is connected through signal lines, wherein, the left f...

Embodiment 2

[0108] The following reference figure 2 (Also refer to image 3 with Figure 4 ) introduces the method for detecting the degree of distortion of the vehicle chassis in real time according to the present invention.

[0109] Such as figure 2 As shown, the real-time detection method of the present invention detects the degree of distortion of the vehicle chassis comprising the following steps:

[0110] S1: Signal Acquisition and Preprocessing

[0111] Acquire the vehicle speed signal v and the height signal h of the left front suspension in a predetermined cycle fl , the height signal h of the right front suspension fr , the height signal h of the left rear suspension rl and the height signal h of the right rear suspension rr , and preprocess the collected vehicle speed signal and altitude signal.

[0112] S2: Estimation of chassis distortion

[0113] Calculate the intersection angle α of the front and rear axles based on the preprocessed height signal, and perform sli...

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Abstract

The invention discloses a method for real-time detecting distortion degree of a vehicle chassis. The method is characterized by comprising the following steps of acquiring a vehicle speed signal of a current vehicle, an altitude signal of a left front suspension fork, an altitude signal of a right front suspension fork, an altitude signal of a left rear suspension fork, and an altitude signal of a right rear suspension fork, and performing pretreatment on the acquired vehicle speed signal and the acquired altitude signals; based on the altitude signals of which filtering treatment are performed, calculating a crossing angle of a front axle and a rear axle, and performing moving average filtering treatment of the calculated crossing angle, so as to obtain a smooth value of the crossing angle, wherein the crossing angle alpha is used for indicating the distortion degree of the vehicle chassis; based on the pretreated vehicle speed signal, selectivity utilizing the crossing angle and the smooth value of the crossing angle to determining the distortion degree grade of the chassis in a real-time manner; and according to the determined distortion degree grade of the chassis, outputting reminding signals of different grades. In addition, the invention also provides a system for real-time detecting the distortion degree of the vehicle chassis. Through the adoption of the method disclosed by the invention, a driver can be effectively reminded of the situation of the distortion of the vehicle chassis.

Description

technical field [0001] The invention relates to a vehicle-mounted state detection device and method, in particular to a simple-structured detection method and system for real-time detection of chassis distortion. Background technique [0002] When the vehicle is driving or staying on an off-road road, or when the wheels are parked on the shoulder, the grounding points of the four wheels may not be on the same plane, resulting in uneven force on each tire and suspension, which in turn causes the chassis of the vehicle to be subjected to a torsional moment T, such as figure 1 shown. Since the current cars and most off-road vehicles adopt a load-bearing body, the chassis and body structure have poor torsional strength, so the degree of distortion is large or the vehicle is in a twisted state for a long time, which will cause damage to the chassis structure and affect the performance of the vehicle. It will affect the safety of the vehicle, and if the wheel load is uneven durin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60Q9/00B60R16/02G06F17/15
CPCB60Q9/00B60R16/02G06F17/15
Inventor 张建张菁刘秋铮刘晔王康李超刘超李素文
Owner CHINA FIRST AUTOMOBILE