In modern society, people's living standards are changing with each passing day, and the number of motor vehicles is increasing. No matter in developed or developing countries, traffic congestion and road congestion are becoming more and more obvious. Various types of traffic accidents and violations frequently occur. problem. In order to solve the worsening traffic conditions, intelligent transportation systems came into being. With its huge development potential, intelligent transportation has become a key area for the development of the Internet of Things. It has rapidly advanced throughout the world and has become an important symbol of modern transportation.
The main goal of the traffic monitoring system is to adapt to changes in dynamic traffic conditions. That is, by collecting traffic data and transmitting it to the traffic management center, the center analyzes it. According to the analysis results, the center controls traffic by controlling vehicle access and traffic lights. The center can also use this data to quickly locate traffic accidents. Take measures. At the same time, the management center can transmit the collected traffic data to the driver, which helps to reduce traffic congestion and optimize driving routes. The use of traffic monitoring systems can improve the capacity of existing roads, coordinate the handling of sudden traffic events, and alleviate traffic congestion, thereby improving traffic conditions. Data acquisition systems play a very important role in traffic monitoring systems, so it is necessary to study data acquisition systems with higher application value. Vehicle detection sensors are a key part of the data acquisition system, and the performance of the sensors determines the accuracy of the data acquisition system. The laser has extremely high directivity, high brightness and good coherence. It has excellent characteristics both in measurement accuracy and measurement range.
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