抄録
A portable radio device with ad hoc wireless networking function is realized as a platform of various physical and informational support systems based on“Lifelog Contents”that is the records of experiences in the daily life. Lifelog should be created by collecting various information through a wireless network without putting a strain on human and environment. By attaching sensors and actuators to our radio device, they can participate in the wireless network and effectively communicate with each other. We adopted Bluetooth as wireless communication technology that has such good features as low power consumption, sufficient data throughput, high resistance to noise and so on. Since our device has flexible multihop networking functions, it can construct a large scale network. We realized a prototype of Lifelog based electric appliances operational support system with our devices. Utilization of Lifelog reduces the burden for controlling a huge amount of convoluted electric appliances by constructing the probabilistic model of user's operational behavior and predicting user's successive operations. The system gives prediction results to the user and executes operations via the wireless network. Experimental results prove that the operational system is useful and developed device is sufficient performance for Lifelog based support systems.
