What Is a Vehicle Sensor?
A vehicle sensor, also called a vehicle detection sensor, is a sensor that can detect and count the number of vehicles that have passed or are parked in a given location.
The use of vehicle sensors can greatly improve management capabilities because they can keep track of vehicles parked in parking lots, etc., and detect anomalies such as reverse driving. They also help to improve the efficiency of vehicle movement in factories and distribution centers.
Vehicle sensor is available in wall-mounted, recessed, and ceiling-mounted types, and can be selected according to the intended use.
Uses of Vehicle Sensors
Vehicle sensors are used in large parking lots, coin-operated parking lots, factory gates, distribution centers, etc. because they can detect the presence or absence of cars, trucks, and other vehicles. In particular, vehicle sensors have become popular in parking lots in recent years because they can monitor the availability of parking spaces by attaching vehicle sensors to each parking space.
Some vehicle sensors can also be used to protect the safety of pedestrians by buzzing or audibly alerting passersby when a vehicle passes by.
Principle of Vehicle Sensors
Vehicle sensors differ in what they can detect, and there are several different types of principles. The most commonly used types are microwave, infrared, and ultrasonic sensors. The reflected waves from microwaves, infrared rays, ultrasonic waves, etc., hitting an object are measured to determine the moving speed, distance, presence, etc., of the target vehicle. Many of these products that use reflected waves may malfunction due to weather conditions, especially when used outdoors. Also, the detection range may vary depending on the size and material of the vehicle to be detected.
Another principle is called a loop coil sensor. The presence or absence of a vehicle is determined by detecting the inductance that changes when a metallic object passes over the top of a looped cable coil. This type of sensor is embedded and requires installation.
A similar principle to the loop coil sensor is the magnetic sensor. It detects and judges the change in magnetism caused by the passing of a metal vehicle.