Introduction to several implementation scheme of license plate recognition system

License plate recognition technology widely used in intelligent parking lot system, if the parking lot for license plate recognition, basically has the following several kinds of schemes.

1. Capture camera + industrial computer

the package should belong to the earliest application of license plate recognition system, the characteristics of the package is industrial PC, when vehicles into the trigger device (ground sense coil or radar), a camera to capture by the industrial computer software to identify the license plate number, industrial computer can identify multiple lanes vehicles, manage multiple cameras.This scheme has been rarely used, gradually replaced by the second scheme.

2. Capture camera + embedded analysis host

because of the low industrial reliability, so gradually replaced by high reliability of embedded host.Embedded host encryption function, good safety, and its structure is compact, easy installation, power consumption is low, but this solution is not suitable for use under harsh environment.

3. The embedded integration camera

the host and the camera is an organic whole, capture, control, recognition, video, compression, transmission in a body, the installation is more convenient, greatly simplifying the front-end equipment and the platform after the work, and high reliability and safety, and can be used in harsh environment, is one of the most promising license plate recognition system.