A vehicle windshield moisture detecting system

For automatically detecting transport vehicle wind glass board (26) is water sealing control system (20). The automatic water sealing test system (20) comprises: For wind glass board (26) one part of the image by according to CMOS movable rubber element sensor image sensor array (32) on optical system (30). Field of the intensity of each voltage element (35) is conversion of the ADC into the corresponding gradually layer. The opposite to one image gradually layer of storage the memory (38). The gradually sum of series's hollow frequency batching of analyzed of the rainfall of determining with. A switch control tools a control signal of wind screen wiper (40) and an operation, and is structure of water sealing function. The system is also suitable for detecting and water sealing degree of wind glass board (26) outer surface of the wind glass board (26) inner surface. A providing the device for automatically detecting inner and outer the water sealing system for wind glass board (26) is provided, capable for the serious limit performance of known automatic the water sensor.