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At present, the common anti-smashing technologies of road boom barrier gates on the market are introduced as follows:
This technology usually requires two ground induction coils to be embedded at the entrance and exit of the parking lot to detect vehicles. The principle is the same, but the functions are different, namely the trigger coil and the anti-smashing coil. The trigger coil is buried in front of the toll station. When a vehicle is detected, it will send a signal to the vehicle detector in the gate, and lift the rod to release; the anti-smashing coil is buried directly under the gate. When a vehicle is detected, Send a signal to the vehicle detector in the gate to prevent the brake lever from falling and hitting the vehicle, and the lever will drop when the signal disappears.
There are many applications of coil anti-smashing technology, but the disadvantages are also obvious: it can only prevent cars from smashing, but not people; it is susceptible to rain, snow, metal and strong electricity interference; maintenance is troublesome; construction is cumbersome.
The technology is to install infrared radiation devices on both sides of the entrance and exit gates. During the fall of the gate, if a vehicle enters and the infrared rays are blocked, the gate will automatically rise, and the response is relatively fast. However, the infrared radiation range is small, and it is easily disturbed by rain and snow.
The disadvantage of infrared anti-smashing technology is that it is greatly affected by vibration, which easily causes the gratings on both sides to be unable to focus. In addition, the infrared radiation range is small, and it is easily disturbed by rain and snow weather.
Similar to the ground-sensing anti-smashing technology, the gate radar is also divided into two parts: the trigger radar and the anti-smashing radar. The former is installed on the camera box, and the latter is installed on the box of the automatic brake lever. When the vehicle wants to pass the automatic gate, it will first drive into the microwave range of the “trigger radar”, trigger the gate camera to capture the license plate, and control the automatic gate lever to rise. After that, the vehicle drives into the microwave range of the “anti-smash radar”, and the automatic brake lever will not be lowered until it is completely driven away. During the period, if the “anti-smashing radar” recognizes the presence of a car or pedestrian within the range of the automatic brake lever, it will keep the brake lever lifted to avoid hitting cars or people.
The advantages of the barrier radar are very prominent: in addition to being more convenient for installation and maintenance, it can also identify people and non-motor vehicles, and effectively avoid the occurrence of “smashing people”. In addition, compared with the traditional anti-smashing technology, the millimeter-wave radar gate anti-smashing technology is more adaptable to the environment and is not affected by other factors, effectively reducing the misoperation and failure rate.
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