Design And Performance Evaluation Of Garment-Embedded Oriented Wireless Sensor Network

The intelligent clothing is tied in the microelectronics technology and the clothing. It is embedded in the garment integrated with sensors, microcontrollers, calculation processor, network transmission units and I/O units. This clothing will archieve the functions such as perception, acquisition, transmission, processing and display of the physiological information.In order to meet the requirements of personal physiological monitoring, the Garment-Embedded Wireless Sensor Network (GE-WSN) based on IEEE 802.15.4 is proposed. And the wireless-transmission scheme is designed to collect and transmit various vital signals. Furthermore, A practical value of the node design which can transmits the human physiological signals successfully in the wireless sensor network is presented. This design would promote the the further development of research and applications on wireless sensor networking. This new intelligent clothing breaks the traditional wired communications. And this mode will be more convenient and simple in real life. The whole system use high-tech sensors to detect physiological signals, which is extracted and processed by microprocessor. In GE-WSN, the simple nodes will be required to transmit the charactars and waveforms of these signals to the central coordination. Finally, the data will be carried to the ultimate . control centers (hospitals) through LAN or WAN out of GE-WSN. This project is expected to develope low-power WSN-Intelligent node, and achieves human physiological information with wireless transmission. The essential tasks of the thesis can be summarized as follows:1. The Garment-Embedded Wireless Sensor Network (GE-WSN) based on IEEE 802.15.4 is proposed. Then, the requirements of personal physiological monitoring and the system truss of network protocol particularly are analysed. At the last, a GE-WSN wireless-transmission scheme which is carried out collecting and transmitting various vital signals is framed.2. Focusing on the ECG signals, the experiment scheme used to testify the validity and reliability of network transmission is planed. After comparing network performances and analyzing consumed energy in two transmission mechanisms by NS2, the Slotted Carrier Sense Multiple Access with Collision Avoidance (CSMA-CA) mechanism in Beacon-enabled network is established at last.3. After analysing the requirements of GE-WSN intelligent nodes and system truss, exploring the selection of GE-WSN communication node (Simple nodes and central coordinator) in depth, a practical value project of intelligent node with Helicomm IP-Link1200 and MSP430 is suggested. Then, a real photo of node structure is provided. All of these offer the theoretical basis and a actual reference model for the implementation of the intelligent clothing to transmit human physiological signals though wireless network.4. Wireless transmission of human physiological signals is ultimately implemented successfully by GE-WSN intelligent node which adopt Helicomm IP-Link1200 and MSP430. And the result of ECG signal will be showed on the Labview. It testifies the validity and feasibility that building human body physiology GE-WSN. All kinds of physiological signals in the natural state could be monitored without affecting user's daily living. At the same time, it is also useful for optimizing the intelligent clothing using the existing practical model in further.