Design and realization of automotive data recorder hardware circuit based on C8051F020

Dynamic performance parameter is the important information of automotive motility. In this paper, a automotive data recorder which based on C8051F020 is designed. With this data recorder, parameter such as automotive speed and temperature can be monitored dynamic. Moreover, its precision and stability are excellent. With the hardware circuit, signals of various transducers are collected and disposed. In addition, data display and storage functions are realized and some alarm functions are designed. With the ISP (in system programming) characteristic of C8051F020, update of software system can be realized expediently.