成果報告書詳細
管理番号20150000000510
タイトル*平成26年度中間年報 インフラ維持管理・更新等の社会課題対応システム開発プロジェクト インフラ状態モニタリング用センサシステム開発 道路インフラ状態モニタリング用センサシステムの研究開発
公開日2015/7/25
報告書年度2014 - 2014
委託先名技術研究組合NMEMS技術研究機構
プロジェクト番号P14011
部署名ロボット・機械システム部
和文要約
英文要約 The results of research and development of sensing system for road infrastructure for FY2015 as follows:
(1) Research and development of sensor nodes and monitoring system for road infrastructure
(1-1) Development of bridge sensing system
(1-1-1) Development of bridge sensing system utilizing super acoustic sensor
 Prototypes of MEMS super acoustic sensor device have been produced. The response from 0.1Hz to 10MHz has been realized by the prototype. A prototype of palm-size wireless sensor node was developed. The appropriate placement of the AE sensors to detect the initiation of the fatigue crack was confirmed. The algorithm of a new AE tomography method was also developed.
(1-1-2) Development of bridge sensing system utilizing flexible 2D-strain-pattern sensor sheet
 Theoretical analysis clarified that enough strain transmission sensitivity was obtained by an ultra thin and long strain sensor even with realistic adhesion layer thickness. The ultrathin silicon transfer process and wiring process was developed. The composition of the weather-resistant layer with Polysiloxane dispersion acrylic acid resin and a formation method was developed.
(1-2) Development of inclination sensing system of road ancillary structure
 A prospect to improve Z-axis temperature stability in about 1/20 was obtained by the structure analysis. The design of MEMS sensor device and fabrication of prototype for verification were completed. Wireless communication demand specifications were extracted and wireless communication development specifications of wireless modules were decided.
(1-3)Development of the slope displacement sensing system
 The basic design of multiple function sensor nodes for slope was performed with the size of 5*7*10cm. The optimal wireless mesh network achieved the data collection in a proposed period (every 6 minutes transmission).
(2) Research and development of the fundamental technology of sensing system for road infrastructure monitoring
(2-1) Development of common platform for the wireless communication network
 The communication specifications for each monitoring system were arranged and the programs for a signal concentrator were produced experimentally. A compact and common platform of wireless communication network was installed in the datacenter.
(2-2) Development of the high durable packaging technology
 Elemental technology necessary for a high durable all-in-one package was developed. Fabrication technology for LTCC board and a transparent ceramic substrate, adhesion technology for high airtight sealing, materials and a process technology for sheet film, and durability acceleration evaluation technology were established.
(3) Verification and evaluation study on sensing system for road infrastructure monitoring
 20 candidate places suitable for each monitoring system test were selected. A survey on actual risk situation of the bridge which a local government managed was performed.
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