What is a vehicle detector?

Vehicle detectors sense the presence of vehicles and provide an output signal to a control unit, such as a gate or door operator, to activate the controller. When used as a safety device, vehicle detectors can prevent a gate or door from closing on a vehicle when detected.

How do vehicle detection sensors work?

There are two types of ultrasonic sensors available, presence-only and speed measuring. Both types operate by transmitting ultrasonic energy and measuring the energy reflected by the target. These measurements are processed to obtain measurements of vehicle presence, speed, and occupancy.

What is a vehicle loop detector?

An inductive loop detector is used to detect motor vehicles. When the motor vehicle drives over the detectors wire loop the detectors senses the metal and then a relay is activated. This relay is connected to the motor controller card to automatically open the gate or door.

Can PIR sensor detect vehicle?

PIR sensors are questionable for detecting cars, as the car body may be near ambient. A break beam sensor should do the trick.

What are parking sensors?

What are parking sensors? Parking sensors, also known as proximity sensors, are devices that are located on the bumpers of a vehicle in order to assist the driver when parking. They measure proximity to an approaching object, either in-front or behind, and alert the driver if they get too close.

What is a wireless magnetometer?

Detects vehicle presence and movement via accurate, reliable and flexible wireless magnetometer technology. Virtually maintenance free, our FlexMag™ sensors install in minutes in all pavement conditions, transmitting real-time data for a variety of traffic management applications.

What is the purpose of loop detector?

Loop Detectors are used with vehicle detection loops to create an inductance from a magnetic field to sense vehicular traffic and increase access control. Loop wire is buried underground beneath a road or driveway and are connected to inductive loop vehicle detectors to detect the presence of a vehicle.

Can motion sensor detect cars?

PIR-based Motion Detection: In this case motion is detected by means of a PIR sensor, a passive infrared sensor. This sensor detects emitted infrared energy from objects (humans and animals, but also cars) in the form of heat.

What triggers a PIR sensor?

Passive infrared (PIR) sensors use a pair of pyroelectric sensors to detect heat energy in the surrounding environment. These two sensors sit beside each other, and when the signal differential between the two sensors changes (if a person enters the room, for example), the sensor will engage.

What is the standard loop detector size?

Small-area detection is commonly implemented with a single short inductive loop. Although the literature defines short loops as being up to 20 ft (6.1 m) in length, by far the most common short-loop application is the 6- x 6-ft (1.8- x 1.8-m) loop in a 12-ft (3.6-m) lane.