| 摘要 |
A circumferentially-identifiable inclinometer sensor based on fiber grating comprises a sensor housing (2), two pairs of fixing members (5, 8) are arranged within the sensor housing (2), each pair of the fixing members (5, 8) is used for fixing a corresponding constant-strength cantilever beam (6), the two constant-strength cantilever beams (6) are spatially perpendicular to each other without a contact therebetween, and a mass block (7) is affixed to the bottom of each constant-strength cantilever beam (6); two optical fiber pigtails (1) are extracted from the top end of the sensor housing (2) and then connected with a demodulator after being sleeved in a hollow protective pipe; the two constant-strength cantilever beams (6) that are spatially perpendicular to each other deform when the sensor inclines, in order to measure the angle of inclination of the sensor in a z-axis direction, and meanwhile, the direction of inclination in an xy plane is measured by means of the displacement mapped onto the xy plane when the constant-strength cantilever beams (6) deform, so that circumferentially-identifiable inclination measurement can be achieved. In addition, the inclinometer sensor is precise in measurement and simple in structure. |
