Research on autonomous vehicle testing tools based on laser ranging

In the safety testing research of intelligent driving vehicles, safe interaction testing between vehicles is crucial. During dynamic interaction testing, some equipment and tools are typically utilized to facilitate communication between vehicles, thereby setting up certain testing conditions based on parameters such as the relative distance between vehicles. These communication devices primarily rely on GPS signals from satellites to identify positioning parameters. However, when the testing vehicles are located inside tunnels, it becomes difficult to acquire positioning signals, making it challenging to calculate the distance between vehicles. To address the issue of calculating the distance between vehicles inside tunnels, a tool has been developed utilizing the characteristics of laser in the relatively dark tunnel environment to set the relative distance between vehicles. By projecting a laser beam from one vehicle onto the ground and adjusting the laser projection angle according to the distance requirements in the testing conditions, the horizontal distance between the testing vehicle and the position where the laser is projected onto the ground can be obtained. The target vehicle can complete dynamic interaction testing with the testing vehicle at an appropriate time based on the position of the laser projection on the ground. This article analyzes the structural rigidity and strength of this laser ranging device through finite element calculations, ensuring the rationality of the tool's structural design.