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A WIRELESS DATA ACQUISITION AND TRANSMISSION SYSTEM DESIGN

Platform : Embedded System Projects

AIM: The original intention of design of short-range wireless communication network is to provide short-distance broadband wireless access to mobile environment or formulation of temporary network, it is the further development of internet in mobile environment. PURPOSE: The purpose is to provide short-range wireless communication network for lower cost and more flexible use, wireless receiver module of multi-point short-range wireless data collection and transmission network, which provides a low-powered and high-performance wireless data communication system, works in the ISM. METHODOLOGY: BLOCK DIAGRAM: REMOTE TERMINAL UNIT: CENTRAL MONITORING UNIT: POWER SUPPLY: DESCRIPTION: In the field of modern wireless communication, there are mainly some technologies that provide solutions to the wireless data transmission network, such as: GSM, CDMA, 3G, Wi-Fi. These solutions make network work with high efficiency and good quality, but still with high cost. So it was difficulty in popularizing in with low cost and at the circumstance of infrastructureless or infrastructure destruction. According to this situation, the key components of the Information Terminal and the wireless receiving modules on the data collection and wireless transmission network were designed with the principle of transceiver n RF905 and 51 series of single-chip computer as the core hardware, besides, combining with the current technology on the Wireless Adhoc Networks, a short-range wireless data sampling and transmission network was putting up , which provides a low-powered and high-performance wireless data communication system, works in the ISM (Industrial Scientific Medical ) Band. Then an available solution to the wireless data communications was put forward, and this solution was good at stronger real-time response, higher reliability requirement and smaller data amount. Through software and hardware debugging and actual measuring, this system based on our solution had work well, reached the expected goal and been already successfully applied to Wireless vehicle System. In modern wireless communication, GSM, CDMA, 3G, and Wi-Fi become the mainstream solution of wireless data transmission network because of their high speed and reliable quality. They also have the shortcomings of high cost, so wider application would cause a great waste of resources, and they cannot be promoted in small regional, low speed data communications. Multi-point short-range wireless data collection and transmission network will be the best solution. The system supports the development of communication system of peer-to-peer, point-to-multipoint, and multipoint-to-multipoint. Short-range wireless communication can adopt different network technologies, such as bluetooth, IEEE802.11, and Home RF, Infrared. Compared with long-distance wireless communication network, they are different in the basic structure, the application level, service range, and business (data, voice). SOFTWARES: 1. Embedded C 2. Keil IDE 3. Uc-Flash HARDWARE COMPONENTS 1, Power supply 2. Microcontroller 3 RF ENCODER 4. RF DECODER 5. TEMPERATURE SENSOR 6. LDR 7. LCD RESULT: With this project we can implement data acquisation and transmission design.

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