1. Self inspection function

　　After the GPS/Beidou satellite positioning car travel recorder is powered on, a long beep will prompt to start testing various components and interfaces of the system, and the LCD display screen will display "GPS/Beidou satellite positioning car travel recorder" and "system is self checking, please wait...". After the self check is completed, the main display screen will display information such as the number of positioning stars, wireless network connection status, signal strength, vehicle speed, etc. Pressing the menu button to select the device status can display information such as main power supply voltage, GPS antenna voltage, and external device faults, prompting the user to start normal operation of the GPS/Beidou satellite positioning car travel recorder. If an external device malfunctions, information such as the fault type can be displayed through a menu, and uploaded to the dispatch and monitoring center after successful networking.

　　2. Registration and Cancellation

　　The GPS/Beidou satellite positioning vehicle driving recorder can send registration/cancellation messages to the dispatch and monitoring center through GPRS, and the dispatch and monitoring center sends registration/cancellation responses to the host through GPRS. After successful reply, the device registration/cancellation is achieved.

　　3. The function of recording, storing, and collecting real-time time, date, and driving time

　　The GPS/Beidou satellite positioning car travel recorder can calibrate the local clock through the GPS clock and record real-time dates in the form of year, month, and day; Record the real-time clock in hours, minutes, and seconds.

　　4. Driving records

　　The GPS/Beidou satellite positioning vehicle driving recorder supports real-time uploading of recorder data, conditional retrieval uploading, and data interface export. The information retrieved and uploaded includes: real-time clock, driver code and corresponding motor vehicle driving license number, cumulative driving mileage within the last 360 hours, vehicle speed sensing coefficient, driving speed within the last 360 hours, vehicle VIN number, license plate number, license plate classification, accident suspected point data Accumulated driving mileage within the past 2 working days, driving speed within the past 2 working days, fatigue driving records, speeding driving records, and other information.

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