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Car strength and fatigue early-warning method and system

A car fatigue technology, which is applied in the field of car reliability and durability testing, can solve problems such as potential safety hazards and resource waste, and achieve the effect of avoiding resource waste and reducing car fatigue damage

Active Publication Date: 2014-07-16
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fatigue damage of the car is closely related to the driver's operating habits and the use environment, which leads to a large difference in the fatigue damage of the car: one is that the vehicle that has reached the end of life still has good fatigue performance, but must be scrapped compulsorily. Causes a waste of resources; the other is that the fatigue damage of vehicles that have not reached the end of life can no longer meet the conditions of use and still be used forcibly, causing safety hazards

Method used

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  • Car strength and fatigue early-warning method and system

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Embodiment Construction

[0025] Such as figure 1 As shown, the car strength and fatigue early warning device of the present invention includes a six-component force sensor, signal acquisition equipment, signal processing equipment and a display device. The six-component force sensor is installed on the four wheel axle heads, and the signal processing device is an on-board computer (ECU); the output of the six-component force sensor is connected to the ECU through the signal acquisition device. The signal acquisition device can use an A / D conversion chip to convert the analog signal of the shaft head load output by the six-component force sensor into a digital signal acceptable to the signal processing device; the signal acquisition device can also use a level conversion chip to convert the The digital signal of the shaft head load output by the six-component force sensor is converted into a shaft head load level signal acceptable to the signal processing equipment. The signal processing equipment is ...

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Abstract

The invention relates to a car strength and fatigue early-warning method and system. The car strength and fatigue early-warning system comprises a spindle nose load signal interface unit, a signal conversion unit, a storage unit, an initialization unit, a counting unit and an early-warning unit. The car strength and fatigue early-warning method comprises the steps that a six-component sensor is used for testing a car spindle nose load signal in real time, an early-warning system is used for converting the car spindle nose load signal into a spindle nose load force signal F, the F is compared with a strength limit load F0, a low-cycle fatigue load F1 and a high-cycle fatigue load F2, early-warning information can be sent out when the frequency n0 of the situation that the F is larger than the F0 is larger than or equal to 1 and the frequency n1 of the situation that the F is larger than the F1 is larger than or equal to the low-cycle fatigue cycle frequency N1 or the frequency n2 of the situation that the F is larger than the F2 is larger than or equal to a high-cycle fatigue cycle frequency N2, and a user is prompted to carry out maintenance. The car strength and fatigue early-warning system and method are applicable to car overall strength and fatigue forecasting, the user can monitor the car strength and fatigue in real time, the user can be prompted to carry out timely maintenance, and car fatigue damage caused by overlarge loads can be reduced.

Description

technical field [0001] The invention belongs to the technical field of car reliability and durability testing, and relates to a car strength and fatigue early warning device method and system based on a six-component force sensor. Background technique [0002] The strength and fatigue warning of cars has always been a difficult technology in car research. According to the State Economic and Trade Commission, the National Development Planning Commission, the Ministry of Public Security, and the State Environmental Protection Administration "Notice on Adjusting Several Regulations on Automobile Scrapping Standards" (Guo Jingmao Ziyuan [2000] No. 1202) and the Ministry of Public Security's "About the Implementation of The spirit of "Notice on Several Regulations on Scrapping Standards" (Notice on Relevant Issues) (Baotong Guan [2001] No. 2), in the automobile scrapping standards formulated in 1997, the service life of non-operating passenger cars and tourist passenger cars and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
Inventor 曹正林
Owner CHINA FIRST AUTOMOBILE
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