Vehicle detector Electromagnetic Induction-Based Embedded Vehicle Detection Solution
The Inductive Loop Vehicle Detector is a device that detects vehicle presence through inductive loops embedded under the road surface. When a vehicle passes over or remains above the loop, the detector captures changes in the electromagnetic properties of the metal body and triggers a signal output.
This detection method offers high accuracy, stability, and strong anti-interference capabilities, making it widely used in applications such as barrier gate control, traffic signal management, and vehicle counting.
Working Principle
● Electromagnetic Induction: An alternating electromagnetic field is generated by a环形 (loop) embedded under the road surface.
● Vehicle Detection: When a metal vehicle passes over the loop area, the metal body causes a change in the loop's inductance.
● Signal Processing: The detector analyzes the inductance change to determine vehicle presence status and outputs a switch signal.
Core Functions
● Vehicle Presence Detection: Accurately detects whether a vehicle is positioned above the loop.
● Pass-Through Detection: Detects the moment and direction of vehicle passage over the loop.
● Counting Function: Counts the number of vehicles passing over the loop.
● Speed Estimation: Estimates vehicle speed based on loop length and passage time.
Technical Specifications
● Detection Accuracy: >99% (suitable for metal-bodied vehicles).
● Response Time: <10 ms (high-speed response, real-time performance).
● Loop Inductance Range: 50μH–1000μH (adjustable to accommodate different loop specifications).
● Output Signal: Relay switch, RS485, Ethernet, etc.
● Power Input: 12V DC/24V AC, power consumption <5W.
● Operating Temperature: -40°C to 85°C (industrial-grade wide-temperature design).
● Protection Rating: IP67 (suitable for harsh outdoor environments).
Product features
● Detector Installation: Wall-mounted or cabinet-installed, connected to the loop via cables.
● Debugging and Calibration: Sensitivity adjustment via DIP switches or software.
● Traffic Signals: Inductive signal control adjusts green light duration based on traffic flow.
● Highways: Vehicle detection at toll stations, ETC system triggering.
● Vehicle Counting: Traffic flow statistics for roads or parking lots.
● Security Protection: Used for unauthorized entry detection or area vehicle control.
● Strong Anti-Interference: Unaffected by weather conditions (rain, snow, fog, etc.).
● Long Lifespan: No mechanical parts, no wear and tear on embedded components.
● Low Cost: Low loop cost, simple maintenance.
● High Stability: Suitable for long-term continuous operation.
