John William Arkwright,Simon Nicholas Doe,Vinay Kumar Tyagi,Edward William Preston
申请号：
US11886099
公开号：
US08503834B2
申请日:
2006.03.09
申请国别(地区):
US
年份:
2013
代理人:
摘要：
The present invention provides an apparatus for distributed pressure sensing. The apparatus comprises a series of Bragg gratings, a light guide incorporating the series of Bragg gratings and a plurality of moveable wall portions. The moveable wall portions are coupled to respective Bragg gratings so that the movement of one of the moveable wall portion causes a force on the respective Bragg grating resulting in a change in strain of the respective Bragg grating. The apparatus also comprises at least one rigid member that is attached at attachment regions between which a sensing region of at least one Bragg grating is defined. The rigid member is arranged so that a strain in the sensing region is not directly influenced by a change in strain of the light guide outside the sensing region.
