Design a coin automatic car-washing system. According to voice prompts

after customer completes payment

the system goes into the car-washing mode. Based on modern sensor network technology

the system uses non-contact car-washing way. Through photoelectric sensor and contact sensor

collect vehicle position information.The ARM11 is used as control core

according to vehicle position information

control operation of motor

and open and close of each part of functional valve

so as to realize car-cleaning. Experimental result shows that the system responds quickly

cleaning effect is good

setting of each mechanism is simple and save material cost.