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STRESS SENSOR, AND STRESS SENSOR SYSTEM 新技術説明会

Foreign code F160008909
File No. (S2015-0806-N0,S2015-1988-N41)
Posted date 2016年11月29日
Country 世界知的所有権機関(WIPO)
International application number 2016JP059673
International publication number WO 2016158776
Date of international filing 平成28年3月25日(2016.3.25)
Date of international publication 平成28年10月6日(2016.10.6)
Priority data
  • 特願2015-065790 (2015.3.27) JP
Title STRESS SENSOR, AND STRESS SENSOR SYSTEM 新技術説明会
Abstract Provided is a stress sensor for converting produced stress to wavelength changes of light, wherein the stress sensor is characterized by having a core in which a first pigment has been dispersed, and a cladding into which has been dispersed a second pigment which emits light at an excitation wavelength equal to the emission wavelength of the first pigment when excited by prescribed excitation light, and converting illuminating light that includes the prescribed excitation light entering from the entry end of the core to light of a wavelength dependent on produced stress, which is obtained at the exit end of the core.
Outline of related art and contending technology BACKGROUND ART
As one of the stress sensor of the optical fiber strain sensing system is 1, over a wide range of fiber optic cable by laying of the nerve, for a local strain can be captured, which is effective in monitoring the health of the structure. Is already part of the tunnel, and the optical fiber strain sensing system is BOTDR(Brillouin Optical Time Domain Reflectmetry) FBG(Fiber Bragg Grating) used in health monitoring.
The sensing system is, the information of the multi-spot strain sensor 1 collect a single line and therefore, at a position near the light receiving portion and the optical fiber are broken, and the subsequent range information cannot be made at all. In addition, a disconnection or a power outage is interrupted and the power transmission cannot be secured in the tunnel if the power of the function is lost.
Further, if the sensor information, the remote monitoring room through the network even when the sensed behavior, the information is transmitted to the site for the radio communication means such as a tunnel must be functional. These two transmission and network 1 and the uninterrupted, BOTDR FBG or loss of function is a monitoring system.
In addition, these in the prior art, the pulse light is used to identify the location of stress and temperature compensation and complicated techniques are used, in order to handle the required high expertise expensive than the device itself. For this reason, the monitoring system according to a BOTDR FBG, it is still not popular.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
  • Inventor
  • FURUKAWA, Rei
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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