Design of Wireless Data Transmission System Based on Si4421

Data transmission technology has a wide rang of application in the industrial production.But the security and reliability of the data transmission can not be guaranteed because of difficult and complex wiring. As for these problems,this paper puts forward a new scheme of wireless data transmission system based on Si4421, the system´s hardware and software design is also explained in detail in this paper. The system has strong anti-interference ability and high reliability by use of C8051F340 microcontroller and radio frequency chip Si4421 in hardware design. At the same time, the new method can be achieved with low complexity and computing cost.The key features of program for microcontroller and wireless digital chip configuration and wireless data transmission are discussed. The system has many features,such as low cost,simple structure,easily to control and maintain and stability, it can obtain reliable wireless data transmission.