With drivers exposed to an increasing number of distractions, automatic windshield wiper systems become an even more attractive feature as they work to minimize the time the driver must take their hands off the wheel. These systems detect rain droplets on the windscreen and turn on automatically. A rain-sensing windscreen wiper consists of a built-in sensor circuit with mechanical system for automatically washing raindrops during rainfall, thus providing a complete degree of automation. Both rain sensor and intermittent wipers are significant milestones that incorporate the windshield wiper as part of a global design system. These systems were developed with the end user in mind and were not last minute considerations. The efficiency of the wiper system depends on the different factors.
A wipers or windscreen wipers is a device used to remove rain, snow, ice and debris from a windshield or windshield. Almost all motor vehicles, including cars, trucks, train locomotives, boats with cabin and some aircraft, are equipped with such wipers, which are generally a legal requirement. A cleaner generally consists of a metal arm, rotatable at one end and with a long rubber sheet attached to the other. The arm is powered by a motor, often an electric motor, although pneumatic power is also used in some vehicles. The blade swings back and forth over the glass, pushing water or other precipitation from its surface. The speed is normally adjustable, with several continuous speeds and often one or more "intermittent" configurations. Most cars use two synchronized radial type arms, while many commercial vehicles use one or more panto-graph arms. Windshield wipers can be driven by a variety of means, although most in use today are powered by an electric motor through a series of mechanical components, typically two 4-bar links in series or parallel. To do this, use a rain sensor along with a 555 timer and a transistor to power the wiper motor. Our system uses rain sensor to detect the rain, this signal is processed by 555 timer and take the desired action. The rain sensor works on the principle of using water to complete its circuit, so when rain falls on it's circuit it ends and sends a signal to the 555 timer IC and drives the engine to simulate the action of the car's windshield wiper . Systems become an even more attractive feature as they work to minimize the time the driver must take their hands off the wheel. These systems detect rain droplets on the windshield and automatically activate and adjust the wiper system according to the level of precipitation. Current rain detection systems use an optical sensor to detect the presence of water on the windshield and transmit control data from the windscreen wiper to the vehicle body control module (BCM).