| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩士在職專班 === 102 === Due to great progression of wireless technology, wireless communications are gradually developed to sensor networks in order to replace the complex wire lines, which is known as Wireless Sensor Network (WSN). In WSN environment, a host, gateways and sensors are playing a major role on networking. Sensors are mainly responsible for capturing a bulk of environmental data, such as measuring temperature, humidity, brightness, speed, pressure, sound, etc. Furthermore, a host may receive the data from all sensors or send commands to the sensors through wireless communications.
Zigbee consumes less power and has easy relocation, but its transmission distance is limited. Thus, Zigbee is widely used to wireless sensor network. Legacy Bluetooth technology meets a problem of high power consumption, so it was hardly adopted to WSN environment. Until 2010, Bluetooth 4.0 protocol specification, introduced by Bluetooth SIG, has Bluetooth Low Energy technology to resolve power issue so that we may use the technology in WSN environment.
In this paper, we adopt Bluetooth Low Energy (BLE) transmission technology to implement a wireless gateway, integrated with Wifi and BLE communications. The gateway may not only operate general functions like Gateway YiWai, but also can mutually communicate with the BLE equipments, such as intelligent locks, smart power socket, sphygmomanometer, and glucose meter, etc. Therefore, we may remote access our gateway to grab measuring information and also manipulate the intelligent facilities.
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