"Active DMS, generally enabled by cameras and near-infrared technology, detects the driver's state from eyelid closure, blinking, gaze direction, yawning, and head movements.
In 2006, the Lexus LS 460 was packed with active DMS for the first time, and the camera was mounted on the top of the steering column cover with six built-in near-infrared LEDs. Automakers are not interested in active DMS, because they believe that it increases the cost of the vehicle and consumers may be reluctant to pay for it. Yet, a train of accidents over the recent years highlight the importance of DMS in ADAS, especially L2/L3. Active DMS started to soar from 2018, with the massive availability of the L2 system and the to-be-spawned L3 system.
Euro-NCAP issued a roadmap for 2025, which requires that new cars must be equipped with DMS from July 2022. China has legislated the mandatory installation of DMS for commercial vehicles, and similar stipulations for passenger cars are just around the corner.
10,170 units of active DMS were installed in new passenger cars in China in 2019, surging by 174% on an annualized basis. In 2020Q1, the installations skyrocketed 360% year-on-year to 5,137 units amid the wide use of active DMS in the models priced between RMB150,000 and RMB200,000 and the adoption by WEY, Xpeng, Geely, to name a few.
Most Tier1 suppliers have launched total DMS solutions, including Valeo, Bosch, Continental, Denso, Hyundai Mobis, Visteon, Veoneer, etc. Among Chinese companies, the DMS of Hikvision, SenseTime, Baidu, and Dahua Technology have been found on various brand models.
DMS is used mainly to monitor drivers’ fatigue and distraction. Yet a larger number of sensors, vision + infrared cameras, and even radars mean availability of more functions, e.g., face recognition, age and gender recognition, emotion recognition, seat belt detection, posture, position and forgetting detection, cabin abnormality detection, and infant detection. Face, gender and expression recognition helps with identity authentication and offers richer interaction between human and vehicle."
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