automatic wiper system

actually i am from EEE dept but i very much interested in mechanical dept

1. SAI SPURTHI INSTITUTE OF TECHNOLOGY ( AN ISO 9001:2011 CERTIFIED INSTITUTION&ACCREDITED BY NAAC-UGC) B.GANGARAM, SATHUPALLY, KHAMMAM,T.S-507303 Department of Electrical and Electronics Engineering A.Y 2017-2018 SENIOR FACULTY SEMINAR INCHARGE HEAD OF THE DEPARTMENT Mr. A. Gopi Mr . T. Rambabu Mr . K. Rama Krishna Prasad M.Tech (PE&ED) M.Tech (PE&ED) M.Tech (PE )   Technical Seminar on “ AUTOMATIC WIPER SYSTEM ” Submitted By J.VIJAY KUMAR 14C51A0216

2. CONTENTS Introduction Automation Need for automation Reasons for automation Required components Block diagram Working Advantages Dis advantages Applications Future scope C onclusion

3. INTRODUCTION The Rain Tracker automotive rain sensor, senses rain or snow hitting the windshield, and automatically runs the wipers at the right speed. we don't have to take our hands off the wheel, or constantly adjust the speed of the wipers as road conditions change A rain sensor or rain switch is a switching device activated by rainfall. In this the sensor projects infrared light into the windshield at a 45-degree angle. If the glass is dry, than most of this light is reflected back into the sensor by the front of the windshield. If water droplets are on the glass, than it reflect the light in different direction…the wetter the glass, the less light makes it back into the sensor.

4. The electronics and software in the sensor turn on the wipers when the amount of light reflected onto the sensor. software sets the speed of the wipers based on how fast the moisture builds up between wipes. It can operate the wipers at any speed.

5. AUTOMATION The Automatic rain operated wiper system is a fully automation project. This is an area of automation where it is broadly defined as replacement of manual effort by mechanical power in all degrees of automation. The operation remains an essential part of the system although with changing demands on physical input as the degree of mechanization is increased. Degrees of automation are of two types : Full automation . Semi automation . In semi automation a combination of manual effort and mechanical power is required whereas in full automation human participation is very negligible.

6. NEED FOR AUTOMATION   Automation can be achieved through the computers , hydraulics, pneumatics and robotics etc. of these sources, pneumatics form an attractive medium for low cost automation . Pneumatics is a branch of engineering that makes use of gas or pressurized air. Pneumatic systems used in industry are commonly powered by compressed air or compressed inert gases Automation plays an important role in automobile.

7. REASON FOR AUTOMATION To achieve high safety . To reduce man power. To increase the efficiency of the vehicle . To reduce the work load. To reduce the vehicle accident . To reduce the fatigue of workers. To high responsibility . Less Maintenance cost.

8. COMPONENTS Water Sensor. Battery. Wiper Motor. Relay. Class frame. NE555IC

9. NE555IC

10. BLOCK DIAGRAM

11. CIRCUIT DIAGRAM

12. WORKING The battery supplies the power to the sensor as well as rain operated motor . Wiper motor is automatically ON during the time of rainfall. The senor is fixed in the vehicle glass. The conductive (Touch) sensor is used in this project. It senses the rainfall and giving control signal to the control unit . The control unit activates the wiper motor automatically. This operation is called “Automatic rain operated wiper”.

13. ADVANTAGES Low cost automation project. Free from wear adjustment. Less power consumption . Operating Principle is very easy. Installation is simplified very much. To avoid other burnable interactions viz.… (Diaphragm) is not used. It is possible to operate Manually/automatically by proving ON/OFF switch . Sensor cost is very low due to conductive sensor.

14. DISADVANTAGES In order to avoid false detection of rain, it requires rain sensors to take decision after few minutes . The rain sensor based system functions when water falls on the sensor directly. The cost of overall system increases as additional components are needed along with rain sensors.

15. APPLICATIONS It is used in four wheeler . It is used in aircraft. It is used in train . It is used in six wheeler. In marine applications.