Design And Implementation Of Rainfall Data Collecting System Based On Mobile Bluetooth

During the process of rainfall monitoring,it offen needed to send staff to collect all kinds of data.However,it not only had to spend lots of manpower and material resources,and also would be lack of real time.This way would lead to the lack of precision response to sudden changes.Meanwhile,industrial field devices had many shortcomings such as hard to wiring and maintenance in this environment.Therefore,using wireless communication technology in these industrial field could show the advantages of the wireless communication,and also solve lots of inconvenience based on saving the labor force.So that it would enhance the sudden enviromental changes response capability of monitoring system.Through the analysis and comparison of these short-distance commu- nication technology and the their application,using Bluetooth communication technology to build wireless data transmission system could effectively avoid or reduce the variety of connections between systems,and the Bluetooth technology had the faster frequency hopping,shorter data packages and more stable technology.The main advantage would be the low-cost,low power,small size,point-to-multipoint connecticity and high noise immunity.Then the Bluetooth technology could be used in more situation with a new protocol system.Therefore,it would become a trend that using the Bluetooth technology in the wirless measurement for wireless information collection and communication.With the rapid popularization of mobile phones,the needs of mobile phones diverse functions became more urgent.At the same time,more and more mobile phones had the Bluetooth.Based on the flexibility of the Java mobile application development and the advantages of the Bluetooth wireless transmission,this issue designed and implemented the mobile acquisition system of the remote device data in the J2ME platform.There are the following:1. Research on the Java API of the Bluetooth wireless communication technology.Analysis of the characteristics of Bluetooth,the Bluetooth protocol stack,the content of the Java Bluetooth API(JSR 82 standard) and its applications.Mainly it would include the application of the API core (javax.bluetooth).2. Study on the J2ME platform architecture.Research of the compositions and the characteristics of the J2ME platform.Introduced the installation and the application of J2ME develpoment environment Eclipse and J2ME Wireless Develpoment Kit.It also included the MIDP application development and finally studied the theory and technology of theRecord Management System. 3. Design and implementation of the Mobile Bluetooth Data Acquisition System.Determining the whole system plan through the detailed analysis.Finally designing the system into the three parts:the mobile client interface,the Bluetooth communication system and the client RMS.In this system the communication initiated by the mobile client,and the remote device Bluetooth mainly provided the response to the client's service request.4. Realization of the Mobile Bluetooth data acquisition system.The Bluetooth wireless connection was based on the J2ME Generic Connection Framework.The issue had researched on the mobile client data collection function in various aspects,and meanwhile provided the key code and the final interface of the system.The design and implementation code of the mobile record store had been given.At the end it made out the design of the remote Bluetooth server in C.This system could implementation the mobile data acquisition of the remote device sensor,Bluetooth wireless data communication,data processing, data storge and data display.Therefore it realized the real-time rainfall data monitoring and inquiry.