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Dynamic weighing method for monitoring weighing platform vibration pre-subtraction operation

A dynamic weighing and pre-subtraction technology, applied in weighing, special scales, measuring devices, etc., can solve the problems of unverified accuracy of dynamic weighing method and large error.

Pending Publication Date: 2018-11-23
YUNCHENG UNIVERISTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Two times of filtering, the average method is actually used, and the main factor of the problem of large dynamic error is not touched
In 2017, the dynamic weighing sampling test of the national domestic weighing industry organized by the Jiangsu Provincial Administration Bureau, the accuracy of the dynamic weighing method has not been verified
Aiming at the defect of large error caused by the vibration of the weighing platform, the technical idea of ​​the present invention is to install a vibration sensor on the weighing platform of the weighing system, obtain the vibration of the weighing platform and the weighing signal synchronously, and connect the two signals to the subtraction operational amplifier for preprocessing, The output signal of the subtraction operational amplifier restores the weighing voltage of an approximate straight line

Method used

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  • Dynamic weighing method for monitoring weighing platform vibration pre-subtraction operation
  • Dynamic weighing method for monitoring weighing platform vibration pre-subtraction operation
  • Dynamic weighing method for monitoring weighing platform vibration pre-subtraction operation

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1, taking the axle group scale system as an example, the axle group scale hardware facilities, the front wheel of the vehicle to be tested is pressed first, which is the front end of the axle group scale; the two sides of the front end of the axle group scale are installed with infrared light curtains; An axle identifier is installed on one side of the front end and the rear end of the axle group scale, the front end is the axle identifier A, and the rear end is the axle identifier B; the front and rear length of the axle group scale is 3.5 meters to 5.3 meters. The disclosed embodiments of the dynamic weighing method of the weighing system will be described in detail with reference to the drawings in the description.

[0022] S1 The weighing vehicle passes the weighing platform, the weighing sensor under the weighing platform takes real-time sampling to obtain the weighing signal X(t) of each axis of the vehicle, and the vibration sensor under the weighing pl...

Embodiment 2

[0027] Embodiment 2, taking the overall scale system as an example, assuming that the weighing platform is continuously passed by vehicles for weighing, and there are two triaxle vehicles on the overall weighing platform at the same time. The hardware facilities of the overall scale, the front wheel of the vehicle under test is pressed first, which is the front end of the overall scale; infrared light curtains are installed on both sides of the front end of the overall scale; a wheel axle identifier is installed on each side of the front end and rear end of the overall scale , the front end is the axle identifier A, and the rear end is the axle identifier B; the front and rear length of the overall scale is 16 meters to 21 meters.

[0028] The overall weighing platform is long enough to accommodate a 6-axle vehicle; the infrared light curtain measures the outcrop of the vehicle, records the vehicle number 1, the vehicle under test continues to move forward, the wheel axle ident...

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PUM

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Abstract

The present invention belongs to the field of road lorry dynamic metering, and especially relates to a dynamic weighing method for monitoring weighing platform vibration pre-subtraction operation. According to the method provided by the invention, a vibration sensor is installed at a position close to a weighing sensor at the lower portion of the weighing platform at one side of the front end of aknown weighing system; the weighing sensor performs real-time sampling to obtain weighing signals X(t) of each shaft of a vehicle, the vibration sensor obtains vibration signals D(t) of the weighingplatform in real time, the signals X(t) and the signals D(t) are accessed to positive or negative input ends of a subtraction operation amplifier to execute subtraction operation. The main factor of the large dynamic weighing error is obtained to properly introduce the weighing platform vibration sensor to filter the errors caused by the vibration of the weighing platform after executing the subtraction operation. Experimental results show that the speed of a tested vehicle is in a range of 20km / h, the metering error is smaller than 1%, and the technical requirements of dynamic metering of a highway management mechanism can be met.

Description

technical field [0001] The invention belongs to the field of dynamic weighing of road trucks, and in particular relates to a dynamic weighing method for monitoring the vibration of a weighing platform by pre-subtraction calculation. Background technique [0002] The expressway implements weight-based tolling, and the total weight of the vehicle is measured for toll collection, and the axle load of the vehicle is controlled to protect the roadbed and bridge safety of the expressway. The known weighing method is one car, one rod, one stop, and one weighing. The advantage of this static weighing method is that it can accurately calculate the weight without disputes about weighing. The disadvantage is that the weighing speed is slow. In recent years, with the rapid growth of my country's economy, there are more and more heavy-duty vehicles, and it is common for vehicles to be crowded at the entrance of the expressway. In order to solve the "vehicle congestion at the entrance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/03
CPCG01G19/03
Inventor 高倩南引明
Owner YUNCHENG UNIVERISTY