The Design Of Water Monitoring Device Based On ARM

The information of real time rainfall is much inportant for real-time schedulingof water resources and preventing flood disaste. The traditional methods to monitorthe water situation is time-consuming and laborious, accuracy and timeliness of theinformation can not also be guaranteed.So realize intelligent and digital system ofwater situation monitoring has an important significance for the entire watermanagement.According to the requirements of water situation monitoring function. overalldesign of monitoring device and the overall framework of the system have been given,Including the main control unit, the image acquisition module, the hydrologicalinformation collection module, network transmission module.According to the functional requirements of the system using OV5640cmossensor as the image capture chip. Using the JPEG image compression to compress thecollected images. Completing the image sensor chip peripheral circuits and controldriver design.According to the different requirements of image information and hydrologicalinformation, Hydrological information using the TCP transport protocol, imageinformation using the TCP transport protocol，Using EM770W card as3G networkmodule.In this design,the paper designed the peripheral hardware ofEM770W,realized the installation NIC driver and transplantion of dial code on linux.Designed DM368peripheral circuits, including circuit Flash, SDRAM circuit,USB interface circuit, serial circuit and sensor interface circuitry. And givingexplanation for each part of the circuits.Transplanting the embedded linux system. design the software of the system,including the rainfall acquisition module, temperature acquisition module,imageacquisition and compression module and network communication module. Finally,we design serial communication program in order to facilitate the debugging systemand provide an interface to add devices in the future.