What does speed detection mean?
1 Answers
Automobile speed detection determines whether a vehicle is speeding by calculating its average speed. Specifically, it involves two adjacent monitoring points on the same road section. The speed of the vehicle passing these two points is recorded, and the system then calculates the average speed to determine if the vehicle is exceeding the speed limit. Methods of automobile speed detection: Coil speed detection: Coil speed detection measures speed using induction coils buried underground in the road surface. This method is relatively accurate but requires significant construction effort. Once the road surface is altered, the coils need to be reinstalled. Video speed detection: Video speed detection uses computer analysis of captured footage to determine the vehicle's movement path and behavior, thereby capturing images of traffic violations. This method is not restricted by road conditions and is relatively easy to install, but it is greatly affected by weather. Microwave radar speed detection: Microwave radar speed detection works in conjunction with high-speed cameras to quickly capture images of violating vehicles, using high-speed shutters for evidence collection. Its advantage is the ability to capture images of high-speed vehicles, typically used on highways. Ultrasonic speed detection: Ultrasonic speed detection emits ultrasonic waves through an ultrasonic transmitter and determines the distance based on the time difference of the waves received by the receiver. This method has higher costs and is unsuitable for harsh environments.
