Study About Vehicles Following Technology For Vibrator Motorcade

In order to improve the quality of exploration and acquire more accurate geological information, people use a couple of vibrator vehicles to work together to capture the weak seismic signals. In the course of the exploration, if the leading vehicle is driven by man and the following one automatically tracks the former one, it will save human resources and improve production efficiency. Since the measured information is more accurate than the obtained information by human judgement, a driverless car fleet is needed to make a research.Nowadays, the major driverless cars have been already equipped with the most advanced technology and equipment in the world, and have developed quite mature in this area. However, such an intelligent unmanned vehicle is only applied to the highway, and its development cost is fairly high (at least a million yuan). What’s more, this kind of intelligent unmanned vehicle is not well used in special environment at the first time. On the contrary, the research in this paper is the method of following leading vibrator vehicle in the wild environment, realizing the final unmanned vibrator motorcade control. In hence, its application background is totally different from the latest unmanned vehicles designed by many companies, such as Google. Currently, no one spared no effort to study on the vibrator vehicle fleet in a particular environment. Therefore, people need to study a feasible low-cost following solution to meet the requirements of special environment and technology indicators.The topic of this paper stems from the National863Project:High Precision Seismic Vibrator Project. And what I mainly focused on is the vehicle following system for the driverless vibrator motorcade.The main achievements are as follows:Firstly, all kinds of intelligent vehicle detection technology had been compared to conclude the advantages and disadvantages. According to the speed, operating environment and other requirements of the vibrator motorcade, the laser technology was used as the primary detection technology and other sensors were used as aided detection.Secondly, the overall construction of the vehicle following system was made with the established vehicle control model and the design for the vibrator motorcade was proposed.Thirdly, according to vehicle distance control theory, an autonomous distance control system based on Visual Studio was designed. After nine kinds of state tests, the designed distance control system works well within a limited distance range of fleet, meeting the requirements of distance control.Finally, the LabVIEW graphical design environment was used to build a vibrator fleet following system. And a series of interfaces, algorithms and data contributed to a software simulation with real-time information display of each unmanned vibrator vehicle.Considering the great number of vibrator vehicles, the total cost of the field test will be high. So I approached to use software to achieve the vibrator fleet control.In this paper, the designed automatic distance control system and vibrator motorcade control system work well. In ideal constant acceleration, speed and deceleration condition, both of the system can control the distance between two cars within the required range, meeting the demands of the project. The initial realization of the control of vehicle following system lays a good foundation for further fully safe unmanned fleet exploration. Moreover, a low-cost high-precision control of the vibrator fleet requires to be made a further study.