Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method and system for dynamic weighing of vehicles under uniform motion

A technology of dynamic weighing and uniform motion, applied in weighing, instruments, measuring devices, etc., can solve the problems of long construction period, high cost, and poor traffic efficiency.

Active Publication Date: 2020-02-11
重庆市华驰交通科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also the following two problems: one is that the length of the scale body carrier is not theoretically analyzed, resulting in larger and larger scale bodies, higher costs, larger and larger occupied areas, and longer and longer construction periods. The traffic efficiency also deteriorates; the second is that the dynamic weighing accuracy of single-platform scales and double-platform scales, which occupy more than half of the market, cannot be effectively improved, and the cost of replacing existing equipment is very high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method and system for dynamic weighing of vehicles under uniform motion
  • A method and system for dynamic weighing of vehicles under uniform motion
  • A method and system for dynamic weighing of vehicles under uniform motion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 The method for dynamic weighing under the uniform motion of the vehicle, its specific steps are as follows:

[0041] First, obtain the original dynamic weighing data signal.

[0042] Secondly, the moving average method is used to filter the dynamic weighing data to suppress the influence of the random error caused by the superposition of the scale vibration and the vehicle vibration, and obtain the filtered data signal. Among them, the smoothing and filtering processing of the dynamic weighing data is as follows: select an array with a length of N, and carry out continuous local average along the entire length of N data one by one in small intervals. For N non-stationary data, it is considered that the small interval of each m adjacent data is close to stationary, that is, its mean value is close to a constant. The filtered data signal output is:

[0043]

[0044] Then, the B-spline least square method is used to fit the filtered data signal, elimina...

Embodiment 2

[0065] Such as figure 2 Said, the dynamic weighing system under the uniform motion of the vehicle includes a scale body carrier, a load cell, a sliding average filter, a single-chip microcomputer and a host computer, wherein the weighing body carrier is connected with the single-chip microcomputer, and the load cell, the sliding average filter , SCM and host computer are connected in sequence. The load cell is used to obtain the dynamic weighing data signal, and the moving average filter is used to filter the dynamic weighing data. The moving average method is used to filter the dynamic weighing data to suppress the vibration of the weighing platform and the superposition of vehicle vibration. The effect of random error is to obtain the filtered data signal. The single-chip microcomputer is used to fit the filtered data signal and calculate the dynamic weighing signal after the vibration of the scale body is weakened or eliminated. The single-chip microcomputer includes a ca...

Embodiment 3

[0072] Since most of the single-platform scales and double-platform scales with lengths of 0.8m and 1.6m have been installed at present, four kinds of scale body specifications with lengths of 0.8m, 1.6m, 2.6m and 3m have been tested and manufactured.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a dynamic weighing method and system on the condition of uniform motion of a vehicle. A weighing sensor obtains a dynamic weighing data signal; filtering processing is carried out on the dynamic weighing data by using a moving average method; and a random error generated by superposition of weighing platform vibration and vehicle vibration is suppressed to obtain a filtered data signal. However, because a method error is caused by filtering of the moving average method, calculation based on a B-spline least square method is carried out and fitting is carried out on the filtered data signal, so that a weighing platform vibration signal is eliminated and thus a method error caused by the moving average filtering is reduced. And then an original dynamic weighing signal in a state of vehicle loading on a scale and a dynamic weighing signal in a state of vehicle unloading from the scale are substituted into a least square fitted curve respectively to carry out least square fitting; and a difference between the original dynamic weighing signal and the dynamic weighing signal is calculated and obtained, so that a dynamic weighing signal after elimination of vehicle vibration and weighing body vibration is obtained. Moreover, on the basis of combination with vibration characteristics of the vehicle, the length range of the weighing body loader in the dynamic weighing system is calculated on the condition of uniform motion of the vehicle.

Description

technical field [0001] The invention relates to the field of dynamic weighing methods, in particular to dynamic weighing under uniform motion of a vehicle. Background technique [0002] It has been 15 years since our country started trial expressway toll-by-weight in 2001. By 2011, our country has fully implemented expressway toll-by-weight. In recent years, dynamic weighing equipment has undergone many technical upgrades, followed by bending plate, single platform scale, double platform scale, shaft group scale and vehicle scale. For a long time, the main research direction of dynamic weighing technology is to improve the dynamic weighing accuracy by extending the length of the scale body carrier and increasing the vehicle weighing time. Judging from the dynamic weighing accuracy of vehicles running at a constant speed, the current vehicle scale has reached dynamic level 1, which basically meets the market demand. However, there are also the following two problems: one is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/03
CPCG01G19/03
Inventor 杜长东黄丹熊山山唐练朱世宇
Owner 重庆市华驰交通科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com