The Embedded Multiplex Temperature Detect System Of Wireless Data Transmission

Now many data detecting system has the problem: the wide detecting range, the distribution of data point and the difficult arrangement of wire. The thesis gives a convenient and economical scheme through comparing several familiar transmission modes.The technology of GSM/GPRS network is very mature, which has the characteristics: wide range, little cost and high efficiency. Choosing wireless transmission through GSM/GPRS with using the services offered by mobile operator is the convenient and low-cost choice, it avoids complicated arrangement of wire and the maintenance of these wires. In the process of wireless transmission, the thesis adopts Q2406B wireless communication module, which supports TCP/IP,UDP,PPP etc, these protocols are convenient and practical.At the same time, the cost of embedded product is lower, the data detecting center with embedded technology has the advantages of little cost and easy moving comparing with PC. The wireless data detecting system based on the embedded system platform adopts ARM development platform to detect the data points. the ARM platform which has the serial port, VGA interface, LCD interface and a expansion slot is small and powerful. It also has the low power consumption and frequency of 200 MHZ. The system adopts the linux operation system which is stable, efficient, easy custom-made.The thesis makes a choice through comparing the several data transmission modes first. It designs the hardware of system and introduces the hardware platform briefly. Secondly, the thesis studies the AT commands and discusses the technology needed in the wireless transmission. Then it makes data transmission protocols and the flows of the data collecting terminal and data detecting center joining into the system and the solution of IP losing. Finally, the thesis designs the software module, which mainly includes the definition of the data memory form and the flow of communication module.