FAQ: Speed Display Freeze During Video Transmission

Q: Why does the speed on my ADAS display sometimes freeze?

A: The speed displayed on your ADAS (Advanced Driver Assistance System) may freeze temporarily when a video is being transmitted from your vehicle to the cloud. This occurs due to the system architecture where the ADAS camera receives speed information from the GPS tracker via RS232 communication.

Q: What causes the speed display to freeze?

A: During video transmission, the RS232 communication line is primarily used for sending video data from the vehicle to the cloud. Normally, this line also carries the speed signal from the GPS tracker to the ADAS camera. When a video is being transmitted, the ADAS camera temporarily does not receive the speed signal, causing the displayed speed to freeze.

Q: How often does this issue occur?

A: This issue occurs specifically when a video event is triggered and the system begins transmitting video footage to the cloud. Videos are transmitted automatically based on detected events (such as harsh braking or collisions) or can be initiated manually by the user.

Q: What are the consequences of the frozen speed display?

A: The frozen speed display may momentarily affect the accuracy of the vehicle's speed shown on the ADAS screen. However, it's important to note that this is a display issue only. The actual speed and vehicle data are continuously recorded and transmitted to the cloud. The backend processing systems correct any discrepancies between the displayed speed and the actual vehicle data during video transmission.

Q: How is the accuracy of vehicle following affected?

A: While the speed display on the ADAS may temporarily freeze, the backend systems ensure that vehicle following algorithms and safety features are based on accurate, real-time data received from the GPS tracker and other vehicle sensors. Therefore, any potential incorrect vehicle following indications on the ADAS display are corrected at the backend level.

Q: Is there anything I need to do when the speed display freezes?

A: No action is required from the user when the speed display freezes during video transmission. The system continues to operate normally, and the accuracy of vehicle data is maintained in the backend. Auditory warnings can be disabled with the volume buttons on the display.