Dynamic vehicle weighing method

A vehicle weighing and dynamic technology, applied to weighing, measuring devices, instruments, etc., can solve the problem of low weighing accuracy

Inactive Publication Date: 2013-03-20
上海明永工程设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Of course, it is obvious that the weighing accuracy of this method is very low, and it is generally used for some undemanding classifications, for example, counting the flow of various vehicles

Method used

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] see first Figure 4 As shown, the dynamic weighing system of the present invention includes piezoelectric sensors 11, 12 buried on the road surface and a signal processing system 20 in the roadside control box, and the piezoelectric sensors 11, 12 and the signal processing system 20 maintain electrical connection, as a preferred embodiment of the present invention, the piezoelectric sensors 11, 12 are respectively embedded in the left and right sides of the road, so that the loads on the left and right sides of the car can be measured respectively to determine the amount of vehicle eccentric load, and the two piezoelectric sensors 11 , 12 are staggered front and rear, so that the time when the wheels pass through the front and rear piezoelectric sensors 11, 12 can be measured to determine the speed of the car; A ground sensing coil 41 is buried in fro...

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Abstract

The invention relates to a dynamic vehicle weighing method which comprises the following steps of: embedding a piezoelectric sensor on the road surface; applying a load on the piezoelectric sensor through wheels when an automobile passes to generate an electric signal, transmitting the electric signal to a signal processing system and calculating the weight of the load through the signal processing system according to the waveform parameter of the electric signal. The dynamic vehicle weighing method also furthermore comprises the following steps of: resampling the electric signal waveform caused by the load, wherein the sampling period TL is equal to L / S, L is sensor width, and S is vehicle speed; calculating a load value of the point according to the electric signal parameter of each sampling point; and superposing the load values of all the sampling points to obtain the total load of the weighing. The method disclosed by the invention resamples the signal waveform according to the period of L / S, i.e. the load is divided into a plurality of subblocks which have equal width with the sensor, the subblocks are independently measured one by one, and finally, the load values are superposed to obtain the total load. Because the factor of the sensor width is considered, the whole weighing method is more precise.

Description

technical field [0001] The invention relates to a method for weighing a road motor vehicle, in particular to a dynamic weighing method under the running state of the vehicle. Background technique [0002] With the rapid and continuous development of the national economy, my country's road traffic has also developed rapidly. By the end of 2007, the total mileage of toll roads in my country reached 100,000 kilometers, of which the total mileage of expressways was 53,600 kilometers. Together with the projects under construction and planning, to In 2020, the mileage of my country's expressways will reach 100,000 kilometers. With the promulgation and implementation of the "Road Traffic Safety Law of the People's Republic of China", the penalties for overloading motor vehicles have been increased, which puts forward new requirements for the method and accuracy of vehicle axle weight weighing. Although the traditional static weighing method has high precision, its efficiency is too...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/03
Inventor 宋红军黄东明
Owner 上海明永工程设备有限公司
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