Rain Light Sensor (RLS), through the infrared light generated by two sets of infrared receiving and emitting tubes, generates full emission, reflection and refraction when passing through the front windshield. According to the dynamic change of the receiving infrared signal, real-time Intelligently senses the amount of external rainfall, and then intelligently controls the speed of the wiper. At the same time, according to the two sets of light sensors, visible light sensor and infrared light sensor, it senses the strength of the external light under different road conditions and automatically controls the switch of the low beam.

basic skills

  Rainfall monitoring function

 Light monitoring function

 Tunnel monitoring function

Automatic headlight function

Reserved extension function

Sun sensor

HUD function

Temperature and humidity sensor

Ambient light function

Based on the previous two studies, and found in the later tests and road test certificates (as shown below): the total reflection and refraction schemes are sensitive to the detection of static rain, but the detection of dynamic rain is slow and insensitive; In contrast, the reflective approach is more sensitive to dynamic rain. Both have advantages and disadvantages, and have different degrees of reaction to raindrops of different situations.

PCB board location map

Actual loading effect