Vehicle load detection method and device based on acceleration sensor

Abstract

The invention provides a vehicle load detection method and device based on an acceleration sensor. The vehicle load detection method based on the acceleration sensor comprises the steps that a type database, a driving state database and an acceleration model of a vehicle are established according to GPS positioning data and three-dimensional acceleration data of the vehicle; according to the type database, the driving state database and an acceleration model, establishing a parameter database of vehicles of different types and different driving states; and the load of the target vehicle is detected according to the parameter database and the driving data of the target vehicle. Real-time weight measurement can be achieved in the vehicle driving process, and on one hand, the high-speed passing efficiency can be improved; and on the other hand, the vibration sensor is installed on the vehicle, so that weight estimation can be carried out in different areas based on the same device, errors caused by different weight measuring devices are avoided, and unified supervision on the vehicle weight by related departments is facilitated.

Description

technical field [0001] The invention relates to the application of vehicle sensors and the technical field of traffic information processing, in particular to a vehicle load detection method and device based on an acceleration sensor. Background technique [0002] For vehicle load detection technology, in the prior art, weighing equipment is installed at toll stations at expressway intersections and some expressway entrances to monitor the load status of trucks on expressways, so as to maintain the expressway and reduce the accident risk of large trucks. The method of weighing vehicles by setting weighing equipment at expressway intersections requires the vehicle to be in a stationary state to obtain relatively accurate weighing results. On the one hand, this weighing method has a very large impact on the efficiency of vehicle traffic on expressways; In addition, due to the different errors of weighing equipment at different expressway intersections, there is the problem of ...

AI Technical Summary

Problems solved by technology

These two methods can obtain the load of the vehicle, but the common problems are that the installation location of the equipment is high, the installation is difficult, and the cost of weight measurement is high

Ultrasonic sensors need to install equipment in the center of the front axle and rear axle of the vehicle at the same time, and manual calibration is required; the weight measurement method based on tire pressure needs to install sensors in the vehicle tires, which is difficult to maintain later

All of these have brought great obstacles to the promotion of this type of weighing method.

In addition, these two measurement methods are greatly affected by temperature. The propagation speed of ultrasonic waves and the deformation of tires are all sensitive to ambient temperature, which makes the calculation of measuring vehicle load more complicated and the accuracy is greatly reduced.

Images