How does the laser ranging module monitor traffic flow?

Typically, this method of use is to fix the device on a gantry on a highway or core road, with the laser transmitter and receiver facing vertically toward the ground and aligned at the center of the lane. When a vehicle is driving, the ranging sensor can output the relative change value of the measured distance value in real time, thereby depicting the outline of the motor vehicle.
This test method usually uses a ranging range of less than 30 meters, and regulations require that the laser ranging frequency is relatively high, and the requirement is that it can reach 100 Hz.
Compared with traditional traffic monitoring technology, laser sensor modules have the following advantages:
1. High accuracy: The laser ranging module can achieve very high accuracy and can reach millimeter-level measurement accuracy, so that the distance and speed of vehicles can be better measured, thereby improving the accuracy of traffic flow statistics and management.
2. Strong real-time performance: Distance sensors can achieve very efficient data collection and transmission, and can transmit measured vehicle data to the traffic monitoring center in a very short time, thereby achieving real-time monitoring and management.
3. The equipment is small in size: Jingruite laser ranging sensor is relatively small in size 43*25mm, easy to install, and does not take up a lot of space.
4. Good stability: The laser technology used in the ranging module has high safety and stability, and can work in complex traffic environments and is not affected by natural factors such as weather.
5. The program is highly programmable: the control program of the ranging module can be customized and the detection data can be processed and analyzed according to actual needs to better meet the needs of traffic management.
This can achieve very good results for monitoring in core road sections. It can distinguish various types of vehicles. The sampling rate of vehicle body height scanning can reach a point of 10 centimeters. Traffic flow height limit, length limit, motor vehicle classification, etc. can be real-time. distinguish and output data quickly.
When no motor vehicle arrives, the distance sensor measures a distance constant, which is also the distance from the distance sensor to the ground. When a motor vehicle passes under the distance sensor, the distance value changes, and when the distance value returns to the constant again It will be considered that a car is passing by. According to this method, we can monitor the traffic flow through these road sections.
The most commonly used method now is to statistically average the traffic flow within a period of time, which involves a large estimation component. However, the video statistical method still has many difficulties in applying in actual situations. For this reason, the laser ranging statistical method is used for smart traffic monitoring. Traffic flow provides a feasible solution.