Monolithic integrated circuit-based automobile overspeed
alarm system design
Abstract
In recent years, with the modern auto control technology and the rapid development of highway,
in the world, especially in developed countries, whether shipping or personal, cars have become the
main long-distance transport vehicles. When the car driving on the highway, through the GPS
positioning, when the car speed is more than the highest speed specified in the road, the buzzer
alarm, and through the voice prompt, and remind the driver to slow down.
This design from the Angle of the driver's own security, we design a test vehicle overspeed
alarm system. When the vehicle in the driving state, the system through the speed sensors to monitor
vehicle speed. In real-time monitoring and automatic control of microcomputer application system,
the microcontroller is often used as a core component. This design is a kind of vehicle speeding is to
make use of 51 single-chip buzzer alarm system. The system has simple structure, high reliability,
convenient operation, can be widely used in motorcycles, automobiles and other motor vehicles.
This design detailed introduces the system's overall design scheme of interface module and 89 c51
interface circuit is given, and the system hardware circuit and peripheral circuit design, through the
LCD display.
Key words: Single chip microcomputer; Automobile overspeed alarm; Voice sensor; The LCD
display
