What is the principle of automatic wipers?
2 Answers
Automatic wipers operate by driving the output shaft through a worm gear on the armature shaft, which then drives the output gear via an idler gear and idler shaft. The output arm, connected to the wiper linkage, is manipulated by the output shaft. When the motor rotates, the output arm and linkage are driven to move back and forth. Wipers are essential accessories installed on the windshield, designed to clear rain, snow, and dust that obstruct visibility. Wipers can be categorized by their driving mechanisms into mechanical, vacuum, pneumatic, hydraulic, and electric types. Modern vehicles typically use electric wipers due to their simple structure and convenient control.
I've been researching automotive technology for many years, and the principle behind automatic wipers is actually quite fascinating: It relies on a small sensor on the windshield to detect rain. This little device emits an infrared beam, and when raindrops hit the glass, the light reflects back more intensely. The sensor detects this change and sends a signal to the car's computer, which immediately activates the wipers and adjusts their speed based on the intensity of the rain. The sensitivity can be customized—for example, during light drizzles, the wipers move gently, while in heavy downpours, they operate at high speed. This feature has made driving much more convenient for me, eliminating the need to constantly adjust the wipers manually and ensuring clear visibility. Behind this high-tech system lies innovative optoelectronic principles combined with microprocessor-based intelligent processing, guaranteeing real-time responsiveness. Every time I head out in the rain, I appreciate how it enhances driving safety by reducing distractions, which is truly crucial.
