At present, with the success of ZigBee, Wi-Fi, Bluetooth, UWB and other emerging wireless communication technology in the market, short-range wireless data communications and wireless networks begin to attract widespread attention and their application areas become increasingly wide. In 2007, the world's leading chip maker Texas Instruments introduced a RF protocol for simple RF networks, SimpliciTI network protocol. SimpliciTI network protocol is characterized by the most prominent low-cost, low-power consumption and simplicity. And it can be used in wireless sensor networks, alarms and security, automatic meter reading,home automation, etc.This thesis first introduces the characteristics of current short-range wireless communication technology and several popular short-range wireless communication technology, and make a detailed analysis of the characteristics of SimpliciTI and its working mechanism. Then, this thesis designs and implements three different typical applications based on different topology of SimpliciTI network protocol, Wireless sensor network, active RFID system and wireless automatic fire alarm system.In the part of wireless sensor network design and implementation, this thesis completes the radio frequency modules and sensors selection and circuit connection, gives the Program flow chart for different nodes, develops the software program using C language under IAR development environment and designs frequency agility mechanism to avoid noise.In the part of active RFID system design and implementation, this thesis designs corresponding solutions for two key issues, anti-collision and low-power, in RFID system. This thesis completes the hardware selection and design of reader and tag and develops their software programs using C language under IAR development environment.In the part of wireless automatic fire alarm system design and implementation, this thesis completes the hardware selection and design of alarm node and gateway node, and develops their software programs using C language under IAR development environment. This thesis uses improved fixed threshold comparative methord to process sensor signals, which reduces the false alarm rate.At the end, this thesis summarizes the main work and some advices about next step are given.
