The working principle of vehicle DVR (driving recorder) mainly includes several key steps such as video signal acquisition, data processing and storage, and data transmission. Vehicle DVR is usually installed on the front windshield of the vehicle, and records the video of the vehicle in real time through a high-definition camera, and saves these video data in the internal memory.
Video signal acquisition: The vehicle DVR uses a high-definition camera to shoot the scene in front of the vehicle, and the camera captures the video signal in real time through the windshield. These video signals are then transmitted to the control chip for processing.
Data processing and storage: After receiving the video signal, the control chip compresses and encodes it, usually using efficient encoding algorithms such as H.264 or H.265 to reduce storage space requirements and improve transmission efficiency. The processed data is stored in the built-in memory, such as a hard disk or SD card.
Data transmission: The vehicle DVR can transmit video data to the remote monitoring center through the built-in 3G/4G module or Wi-Fi module. In this way, users can view the vehicle's driving records and abnormal conditions anytime and anywhere through the Internet.
Abnormal detection and alarm: Some vehicle-mounted DVRs also have intelligent recognition functions, which can detect abnormal situations (such as collisions or sudden stops) and automatically start recording to protect key evidence from being overwritten. At the same time, the system can record the vehicle's location and driving trajectory through the GPS module, which is convenient for subsequent analysis and processing.
