@inproceedings{oai:ipsj.ixsq.nii.ac.jp:00090018,
 author = {佐藤, 永欣 and 及川, 正基 and 上田, 浩市 and 鈴木, 潤 and 石川, 泰二 and 高山, 毅 and 村田, 嘉利 and Nobuyoshi, Sato and Kouichi, Ueda and Jun, Suzuki and Taiji, Ishikawa and Tsuyoshi, Takayama and Yoshitoshi, Murata},
 book = {マルチメディア通信と分散処理ワークショップ2010論文集},
 issue = {11},
 month = {Oct},
 note = {工業製品の品質保証は、設計，原材料，部品の品質保証のほかに，製品自体の製造工程での品質保証も重要である．これは規定通りの作業が製造工程で行われたかどうかを確認することで実現でき，通常は製品自体を検査することで確認されている．しかし，中には作業完了後に規定を満たして製造されたかの確認が難しい場合がある．そこで，我々は地磁気・加速度センサを用いて自動車組立工場の作業をモニタするシステムの開発を行ってきた．標準作業手順から逸脱した作業を行った場合，警告を発し，ラインを停止する．標準的でない作業の検出がほぼ100% 可能になったので工場内で利用を始めたが，実用化にあたりさまざまな問題が発見された．そのうちの一つが，ボルトの締め付け順序は正しいものの，システムが異常と判断し，なおかつ地磁気・加速度センサのデータが通常と異なる場合である．このような場合に何が起きたのかを知るために録画機能を追加したが、ファイル書き出しのための十分な時間を確保できないため無圧縮で記録していた。本論文では圧縮機能を追加したので報告する。, In guarantee of industrial products, it is important not only design, materials
and quality of parts but also quality of each of works in production process of
the products themselves. This quality of works can be guaranteed by checking
whether each of works accords to regulation on working procedure. This is
normally done by checking the produced products themselves. However, there
are some works to check whether the regulation is obeyed or not is difficult
once the work have finished. Therefore, we have been developing a worker’s
motion tracing system that uses terrestrial magnetism and acceleration sensor
to monitor works on automobile assembly factory. This system detects if a
worker violates standard procedure for particular work, the system warns and
stops a production line to correct this violation. Since almost 100% of violation
became to be able to be detected, we began to operate the system in factory,
however, we founded some problems for practical use. One of them is that a
case the order to fasten bolts is correct for particular work, the system judges
the work is not correct, and waveforms of terrestrial magnetism sensor is very
different to correct works. So we have added video recording feature onto our
system, however, we did not compress recorded files since interval times for each
works may be too short to compress them. In this paper, we added compression
feature for recorded video files.},
 pages = {87--92},
 publisher = {情報処理学会},
 title = {地磁気・加速度センサによる作業トレースシステムの作業録画機能の改善},
 volume = {2010},
 year = {2010}
}