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Dynamic tire and road grounding stress measurement device and method

A stress measurement and dynamic technology, applied in the measurement device, the measurement of the property force of the piezoelectric device, the measurement force, etc., can solve the problem that the contact stress distribution between the tire and the ground cannot be reflected, the tire ground pressure cannot be measured, and the accuracy is low. And other issues

Inactive Publication Date: 2018-07-10
WUHAN UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a dynamic tire and road contact stress measurement device and method, which solves or partially solves the problem of the low accuracy of the tire road contact pressure measurement method in the prior art, the inability to measure the tire contact pressure in the driving state, and the inability to reflect the tire and road contact pressure. Technical Problems of Ground Contact Stress Distribution

Method used

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  • Dynamic tire and road grounding stress measurement device and method
  • Dynamic tire and road grounding stress measurement device and method
  • Dynamic tire and road grounding stress measurement device and method

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Embodiment Construction

[0021] see Figure 1-3 , A dynamic tire and road contact stress measurement device provided by an embodiment of the present invention includes: a first piezoelectric sensor 1, a second piezoelectric sensor 2, a charge amplifier, an A / D converter, a signal acquisition instrument and a data processing unit.

[0022] The first piezoelectric sensor 1 is provided with several rows of first conductors 1-1.

[0023] The second piezoelectric sensor 2 is provided with several columns of second conductors 2-1, the second piezoelectric sensor 2 is connected to the first piezoelectric sensor 1, and the first conductors 1-1 in several rows are connected to the first piezoelectric sensor 1. The second conductors 2-1 in several rows are cross-contacted, the first conductors 1-1 in the rows form several intersections with the second conductors 2-1 in the rows, and the intersections form several sensing points. A plurality of sensing points form a sensing point array, and each sensing point i...

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Abstract

The present invention discloses a dynamic tire and road grounding stress measurement device and method, belonging to the field of road stress test. The device comprises: a first piezoelectric sensor provided with a plurality of rows of first conductors; a second piezoelectric sensor provided with a plurality of columns of second conductors, wherein the second piezoelectric sensor is connected withthe first piezoelectric sensor, and the plurality of rows of first conductors and the plurality of columns of second conductors are in crossing contact; a charge amplifier having a first end connected with the second piezoelectric sensor and the first piezoelectric sensor; an A / D converter having a first end connected with a second end of the charge amplifier; a signal collector having a first end connected with a second end of the A / D converter; and a data processing unit connected with a second end of the signal collector. The dynamic tire and road grounding stress measurement device and method can measure dynamic and static tire grounding stress, can measure the tire-road grounding stress distribution, and are high in accuracy and more accurate in measurement data.

Description

technical field [0001] The invention relates to the field of road stress testing, in particular to a dynamic tire and road ground stress measuring device and method. Background technique [0002] With the rapid development of my country's economy, the transportation industry is characterized by large traffic volume, increased vehicle load, and accelerated vehicle speed. The traffic volume on the road is increasing, and the structure of the tire is constantly updated and developed, which makes people put forward higher requirements for the economy, safety and durability of the road surface. At the same time, the tire-pavement contact force affects various driving behaviors of the vehicle, so more urgent requirements are put forward for the measurement of the tire-pavement contact stress. At present, the design load of asphalt pavement adopts double-circle vertical uniform distribution. The static load is very different from the actual operating conditions, which makes the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16G01L1/20
Inventor 张婷王明石王圣周兴林李庆丰
Owner WUHAN UNIV OF SCI & TECH
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