Trigger module (coil): when the vehicle passes through the coil, the corresponding trigger signal is sent to the controller.

Car detector: consists of linear array camera module, LED lamp module and protective cover. It is responsible for collecting chassis pictures when the vehicle passes through, starting to collect when the vehicle enters, stopping collecting when the vehicle leaves, and finally synthesizing a complete chassis picture to the main console through the controller switch module.

Entrance and exit camera: when the vehicle enters or leaves the entrance and exit, the vehicle license plate information is recognized and collected, and the vehicle license plate information is transmitted to the main console through the controller switch module after the vehicle passes through.
Controller: when the vehicle enters, send the signal to the entrance and exit camera to identify and collect the vehicle license plate information and upload the identified vehicle license plate information to the main console and the control vehicle detector to start collecting the chassis image.

Main control desk: is an industrial computer installed with the software management platform developed by, with the functions of displaying the collected chassis pictures, recording vehicle license plate information, vehicle information management, vehicle entry and exit chassis picture comparison, chassis history picture comparison and so on.

• Places security personnel in close proximity to potential danger.
• Prone to human error that can fail to identify hidden objects.
• Other methods can be unreliable, producing many false positives.
• Requires vehicles to be stationary, slowing the flow of traffic.
• demands heavy personnel resources.