Common Anti-Collision Technologies in Parking Barrier Systems
A parking barrier gate is a critical device used to control the entry and exit of vehicles in parking facilities. When a vehicle is authorized to enter or exit, the barrier arm rises to allow passage and lowers again afterward. However, due to technical limitations or improper management, incidents of barrier arms striking vehicles or even people occasionally occur. These accidents often lead to disputes over responsibility, prompting increasing concern about the safety performance of parking barrier systems.
So, what anti-collision technologies are commonly used in modern parking systems?
1. Loop Detector Anti-Collision Technology
Most parking lots use ground loop detectors. When a vehicle drives over the loop, the detector senses it and keeps the barrier arm raised until the signal disappears. The arm only lowers once the vehicle has passed.
Key consideration: The reliability of this method depends on the stability of the loop coil. If the loop is disrupted by electromagnetic interference, it may malfunction. Additionally, loop detectors can only identify vehicles, not pedestrians, which limits their safety coverage.
2. Infrared Beam Anti-Collision
This method involves installing infrared sensors on both sides of the entrance or exit. During the barrier arm’s descent, if a vehicle or object blocks the beam, the system detects it and automatically raises the arm again.
Advantages: Fast response time.
Limitations: Narrow detection range and susceptibility to interference from rain, fog, or snow.
3. Pressure Wave (Obstacle Detection) Anti-Collision
Also known as obstruction-return technology, this system installs a pressure-sensitive rubber strip at the bottom of the barrier arm. If the arm comes into contact with an object (vehicle or person) while lowering, the resistance triggers a signal to reverse the arm back into the raised position.
Adjustable sensitivity allows the system to be fine-tuned to avoid false triggers or excessive force.
4. Digital Anti-Collision Technology
This is the most advanced and reliable anti-collision method, though it comes at a higher cost. It uses digital detection and data analysis to monitor barrier arm movement in real time—without relying on external sensors.
If an obstruction is detected during movement, the system instantly reverses the barrier to prevent impact.
Benefits: High precision, intelligent feedback, and minimal dependency on environmental conditions.
These anti-collision technologies greatly enhance the safety of parking barrier systems, protecting both people and property. Choosing the right solution depends on the specific environment, usage frequency, and safety requirements of the parking facility.
