Embedded Data Acquisition System Based On GPRS

With the development of the communication technology, the wireless network is applied in the data transmission of the industry more and more. At present, the way of wired communication to transmit data has been mostly used in the field of industry, though very economical and practial, wired data transimission has limited its application prospects to alarge extent. With the energetical extension of the Embedded System, embedded products develop rapidly and have been applied quite many fields. Inorder to make the remote data acquisition and transmission more flexible and convernient, the embedded data acquisition system based on GPRS is presented and implemented under this requirement.This system uses S3C2410 chip as kernel processor to construct the hardware platform. The embedded Linux is chosed as the kernel of software resource. High-powered hardware supports basic interface's function and the running of operate system. And the MC39i module is used to transmit the wireless data.First present status and development prospects of wireless communication are summarized this paper. Then GPRS technology and embedded system are introduced.The project that embedded data acquisition system is based on GPRS is given. By detailedly analyzing the functional realization theory of every module, the paper presents the hardware circuit's design. Then the PCB of system is designed. The function and character of Bootloader are analyzed. And U-boot that is chosed as Bootloader of this system is explanted to the hardware platform. According to the need of practice, Linux system is chosed as operating system and explanted to the hardware platform. The driver of GPRS module, which inits and takes charge of the module is coded. PPP protocol is used to realize PPP dial. Applied socket technology and TCP/IP protocol to realize data communication.Therefore, under the existing technique condition, comprehensiving embedded Linux technique and GPRS network to collect and transmit data in particular situation is a choice which has foreground very much. This system can be widely used in gas, oil, electrics and other departments.