car camera module driving record function definitions 

 Driving record function

4.4.1.1 self test function


When the recorder is powered on and starts to work, it should first carry out self-test. After the self-test is normal, it should be indicated by green flashing signal or display screen display mode. If there is a fault, the fault information should be indicated by red flashing signal or display screen display mode.


4.4.1.2 data recording function


4.4.1.2.1 travel speed record


The recorder shall be able to continuously record and store the vehicle driving state data at a time interval of 1 s. The driving state data are: the real-time time of the vehicle in the process of driving, the average speed corresponding to the interval per second and the state signal of the corresponding time. The effective data record shall not be less than the last 48 unit hours.


The unit of speed recording is kilometer per hour (km / h), the measuring range is at least 0km / H ~ 220km / h, and the resolution is equal to or better than 1km / h.


4.4.1.2.2 accident doubtful point record


The recorder shall be able to continuously record and store the driving state data corresponding to the real-time time of 20s before the end of driving at a time interval of 0.2S. The driving state data include vehicle speed, braking and other state signals and position information at the end of driving.


When the external power supply of the recorder is disconnected under the driving state of the vehicle, the recorder shall be able to continuously record and store the driving state data of the vehicle within 20s before the power failure at a time interval of 0.2S. The driving state data include vehicle speed, vehicle braking and other state signals and position information when power is off.


When the vehicle is in the driving state and the effective position information has no change within 10s, the recorder shall be able to continuously record and store the driving state data of the vehicle within 20s before the power failure at a time interval of 0.2S. The driving state data include: vehicle running speed, vehicle braking and other state signals and position information when power is off.


The unit of speed recording is kilometer per hour (km / h), the measuring range is at least 0km / H ~ 220km / h, and the resolution is equal to or better than 1km / h. The number of suspected accident records shall not be less than the latest 100.


4.4.1.2.3 overtime driving record


The recorder shall be able to record the driver's overtime driving data, including: motor vehicle driver's license number, continuous driving start time and location information, continuous driving end time and location information, and the number of records shall not be less than the latest 100.


4.4.1.2.4 location information record


The recorder shall be able to continuously record and store vehicle position data at a time interval of 1 min, including real-time time, position information and average speed of the vehicle during driving. The effective data record shall not be less than the last 360 unit hours.


4.4.1.2.5 driver identity record


The recorder shall be able to record each driver's login and logout, including the driver's license number and occurrence time at the time of login or exit. The number of records shall not be less than the latest 200.


4.4.1.2.6 mileage record


The recorder shall be able to continuously record the accumulated mileage of the vehicle from the time of initial installation. The unit of vehicle mileage recording is kilometer (km). The range of mileage measurement is 0-999999.9km. The resolution should be equal to or better than 0.1km.


4.4.1.2.7 record of installation parameters


The recorder shall be able to record the relevant parameter information during installation, including vehicle license plate number, vehicle license plate classification, vehicle identification code, pulse coefficient, initial installation time and initial mileage of the recorder.


4.4.1.2.8 logging


The recorder shall be able to record relevant operation logs, including:


a) The external power supply record of the recorder shall include the type of power on and off and the occurrence time. The number of records shall not be less than the latest 100;


b) Parameter modification record: when the installation parameters and time are modified, the record content includes the parameter modification type and occurrence time,


The number of records shall not be less than the latest 100;


c) The speed status log records the speed status (abnormal or normal), the start time and end time of speed status judgment, and


Record speed and reference speed for 60 seconds continuously from the start time. The number of records shall not be less than the last 10.


Note: when the positioning module works normally and the reference speed (based on the satellite positioning signal) of the recorder is continuously greater than 40 km / h for 5 min, when the difference rate between the recorded speed (based on the speed sensor signal) and the reference speed (the difference between the recorded speed and the reference speed divided by the reference speed) exceeds ± 11%, the speed state is determined to be abnormal; When the difference rate between the recorded speed and the reference speed is within ± 11%, the speed state is judged as normal. The recorder judges the speed status once every calendar day, and stores the speed status log at the same time.