Vehicle load measuring method based on surface characteristics

Abstract

The invention discloses a vehicle load measuring method based on surface characteristics. The method comprises the following steps: S1, collecting a vehicle scene image; S2, extracting target vehicleproduct model information and a target vehicle image from the vehicle scene image; S3, correcting the target vehicle image to generate a target vehicle two-dimensional image; and S4, calculating the load of the target vehicle based on vertical displacement of the wheels in the target vehicle two-dimensional image. A machine vision technology can be better applied to vehicle load weight measurement, defects that a vehicle body structure is damaged, efficiency is low and so on in a traditional method are overcome, and the defects that an image processing method needs a special calibration object, photographing equipment is tedious, reproducibility is poor and so on are overcome too.

Description

technical field [0001] The invention relates to the technical field of vehicle load measurement, in particular to a vehicle load measurement method based on surface features. Background technique [0002] In recent years, with the development of the economy and the advancement of science and technology, my country's modern transportation industry has achieved rapid development. At the same time, the work of traffic inspection, overrun control and weight toll has been deepened, which has made the vehicle load measurement system obtain more and more widely applied. The application of the vehicle load measurement system aims to solve the problem of vehicle overloading, as well as the resulting road damage, frequent traffic accidents, and deterioration of the transportation market. [0003] With the rapid development of traffic informatization and intelligence, there are currently two main methods of vehicle load measurement, namely, separate type and vehicle-mounted type. Amon...

AI Technical Summary

Problems solved by technology

However, the truck scale measuring equipment needs to destroy the original structure of the road and is difficult to install.

Dynamic bridge weighing calculates the vehicle weight through the change of the bridge influence line. Overweight vehicles may cause damage to the bridge structure and increase bridge safety hazards

Vehicle-mounted methods include: image recognition, laser ranging, strain sensing equipment, etc. The method based on image recognition needs to set up markers on the side of the vehicle leaf spring, and at the same time need to install image acquisition and sensing equipment at the bottom of the vehicle. The signal transmission Difficult and harsh camera working conditions

Laser distance measurement calculates the vehicle load by measuring the deformation of the leaf spring, which has high precision and high cost, and has certain requirements for installation conditions

The strain sensing equipment measures the vehicle load through the change of the strain force generated by the axle or the axle under the influence of the load. It is necessary to install the sensor on the vehicle frame, axle and other parts, and make corresponding changes in the vehicle connection part, which has a great impact on the safety performance of the vehicle. Certain impact, and the sensing device is prone to damage to the sensing unit under long-term vehicle vibration

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