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Wireless Sensor Networks for Monitoring the Daily Interactions between User and Objects
Masayuki Nakamura,Masayuki Tsuda,Kazue Takahashi,Jiro Nakamura 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This article presents a hybrid system of wireless sensor networks and active tags in order to monitor user"sbehaviors of handling objects. The sensor networks consist of an acceleration sensor node that the user carries and occupancy sensor nodes that are deployed in a workplace. The active tags, which are embedded with switch sensors, vibration sensors and occupancy sensors, are attached to objects. The sensor networks capture the user"s movements andthe active tags detect the objects" movements. The sensor nodes have the parent selection function that can allocate resources to the nodes. We demonstrate monitoring the user"s behaviors of handling the objects using the hybrid system.We also show that the proposed system provides the useful information for behavior classification.
Sato, Masayuki,Wakamatsu, Hiroki,Arai, Masayuki,Ichino, Kenichi,Iwasaki, Kazuhiko,Asakawa, Takeshi Korea Information Processing Society 2008 Journal of information processing systems Vol.4 No.4
VLSI chips have been tested using various automatic test equipment (ATE). Although each ATE has a similar structure, the language for ATE is proprietary and it is not easy to convert a test program for use among different ATE vendors. To address this difficulty we propose a tester structure expression language, a tester language with a novel format. The developed language is called the general tester language (GTL). Developing an interpreter for each tester, the GTL program can be directly applied to the ATE without conversion. It is also possible to select a cost-effective ATE from the test program, because the program expresses the required ATE resources, such as pin counts, measurement accuracy, and memory capacity. We describe the prototype environment for the GTL and the tester selection tool. The software size of the prototype is approximately 27,800 steps and 15 manmonths were required. Using the tester selection tool, the number of man-hours required in order to select an ATE could be reduced to 1/10. A GTL program was successfully executed on actual ATE.