Matters needing attention in the installation and identification of property license plates

Strictly isolate motor vehicle lanes and non-motor vehicle lanes to ensure the specificity of the lanes. This has the advantage of ensuring that the license plate images captured by pedestrians and non-motor vehicles and other blocking machines will not affect the license plate recognition results. It also ensures the trajectory of the vehicle's driving. When driving to the ground sense coil, the validity of the property plate recognition of the property community. The license plate recognition and installation of the property community is 1.7 meters high from the ground. If it is installed directly to the ground, it should be equipped with a 1.7-meter-high installation pole or a 1.5-meter-high installation pole to be installed on a 20CM high cement island. A speed bump is installed near the system identification area. The speed bump is installed 2.0 meters in front of the front coil, and the width should be across the width of the lane.

2. The distance from the property license plate recognition column to the island side

The distance between the center of the column and the edge of the toll island is required to be less than 0.5 meters, and 0.3 meters is recommended. The camera should be installed on the side of the monitored lane, but the camera should be as close as possible to the lane, and the angle between the camera and the lane should be as small as possible. Because the farther the camera is from the lane, the greater the angle between the camera and the lane. This will cause the license plate in the video to tilt or distort, which is not conducive to recognizing the snapshot.

3. The license plate recognition video of the property community must not be blocked

There should be no obstruction in front of the license plate recognition of the property community to ensure the integrity of the vehicle video screen, otherwise it will affect the snapshot recognition. For lanes with railing machines, the camera should be installed in front of the railing machine to ensure that the license plate of the passing vehicle will not be blocked by the landing gear of the railing machine; but the camera should be as close as possible to the railing machine to ensure that the license plate is in the detection area when the car is parked Inside, and the license plate will not change too much by being too close to the camera. The specific location of the camera installation should be adjusted according to the site environment, lens focusing and other conditions.

4. Threading the license plate recognition pipe of the property community

In order to facilitate the wiring between the devices, that is, the appearance of the entire system, the connections between all the devices should be connected through pipes, and the pipes connecting each device should be pre-buried under the island. It is recommended to use PVC wire pipes for the threading pipes to be pre-buried in the concrete safety island. Not only will it not corrode, but also the wall sliding is convenient for threading.

5. Installation height of license plate recognition in the property community

The height of the camera from the road surface should not be less than 1.1 meters. Generally, the camera bracket is installed on the step beside the driveway, so the height of the bracket will not be too high, depending on the specific situation. The camera is too low, and there is no movement of the vehicle from top to bottom in the video, which affects the capture and recognition.

6. Adjust the lens for the license plate recognition of the property community to ensure that the license plate is clear

When the above equipment is installed, the lens of the camera will be adjusted when the vehicle enters and exits, until the state of clarity and focus is adjusted.