Dynamic truck scale metering method capable of automatically fitting parameters

Abstract

The invention discloses a dynamic truck scale metering method capable of automatically fitting parameters. The method includes sample data preprocessing, processing the collected redundant data; determining speed adjustment parameters and final data storage forms of different speed intervals; determining a measurement abnormal value of the dynamic truck scale; when a non-verification vehicle withunknown vehicle total weight passes through the dynamic truck scale, calibrating the dynamic truck scale. Through different dynamic truck scale measurement values, the vehicle is compared and an abnormal condition is determined. When a verification vehicle with known total weight of the vehicle passes through the dynamic truck scale, the abnormal condition of the verification vehicle is judged through comparison of a measured value and an agreed true value, abnormal dynamic truck scale parameters are automatically fitted, abnormal data points are extracted, the distribution condition of the abnormal data points is analyzed, and parameters needing to be adjusted and parameter values suggested to be adjusted are determined. The method is not limited by the type of the dynamic truck scale, does not need manual intervention, can achieve the full-automatic metering of the dynamic truck scale in time, greatly reduces the labor cost, can guarantee the metering performance, and improves the metering efficiency.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a dynamic truck scale measurement method with automatic parameter fitting. Background technique [0002] With the development of society and economy, the demand for road transportation has also increased. The statistical report of the Ministry of Transport shows that from 2008 to 2017, the road freight volume increased by 91%, and the proportion rose from 74.1% to 78%. In order to save transportation costs, road transport practitioners often defy the law by illegally modifying vehicles and running fast. The phenomenon of over-limit and overloading has become more and more serious, which not only damages the road surface, but also seriously threatens the safety of the country and people's lives and property. The dynamic truck scale is a national compulsory verification work measuring instrument, and it is the main measurement equipment for controlling over-limit and overloadin...

AI Technical Summary

Problems solved by technology

[0004] 1) High cost of verification: verification personnel and vehicles must go to the scene to carry out verification, and the cost of verification is high

In the future, with the increase in the number of on-road persuasion and off-site law enforcement equipment year by year, the metrology technical institution will need to add more vehicles and personnel to carry out the verification work, and the verification cost will further increase;

[0005] 2) Low verification efficiency: my country's road traffic is developed, and the national highway mileage has reached 4.85 million kilometers, of which the expressway mileage has exceeded 140,000 kilometers. According to statistics, more than 50% of the vehicles used by measurement technology institutions to verify dynamic truck scales Working time is spent on the way to the test site;

[0006] 3) Difficult to cover all vehicle types: At present, the metrology technical institution carries out verification work on dynamic truck scales according to the national verification regulations of JJG907-2006 "Dynamic Road Vehicle Automatic Weighing Apparatus", which stipulates that at least three types of reference vehicles are required for dynamic tests : A two-axle rigid vehicle (12), a three-axle / four-axle rigid vehicle (15 / 112 / 115), a two-axle / three-axle rigid vehicle and a two-axle / three-axle trailer ( 125 / 127 / 155 / 157 / 1127), if the measurement technical organization is equipped with 3 reference vehicles, there are 15 combinations, different vehicle configurations are likely to affect the qualification of a certain dynamic truck scale in the verification, and It is also difficult for the metrological technical institution to equip all the above-mentioned models for the verification of a dynamic truck scale;

[0007] 4) It is difficult to seal the instrument: Some dynamic truck scales have the situation that the measurement parameters can still be adjusted after being sealed, and the physical seal is easily damaged. In addition, the instruments of most dynamic truck scales are installed at toll stations or beyond the limit The safety island of the station is unattended and difficult to monitor;

[0008] 5) It is difficult to deal with measurement disputes: when encountering measurement disputes, verification personnel and vehicles need to go to the scene to re-verify the dynamic truck scale. In order to give priority to handling measurement disputes, the staff must suspend the existing verification work. , disputes are still difficult to be resolved in a timely manner;

[0009] 6) It is difficult to detect equipment failures in time: the verification period of most dynamic truck scales is one year. However, the measurement performance of dynamic truck scales will be affected by different manufacturers, different production processes, installation levels, timely maintenance, and frequency of use.

There are some abnormal situations such as weighing data out of tolerance due to equipment failure and other reasons during the verification cycle of some equipment, and the time when the abnormal situation starts cannot be determined

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