| 摘要 |
It is provided a sensor that enables a positioning of a flexible element subject to applied forces. The sensor comprises at least two spatially separated light permeable tubes 1, 10 each tube having a first end 1a, 10a arranged on a first frame portion 11a and a second end 1b, 10b arranged on a second frame portion 11b of the flexible element, wherein at least one of said first end 1 a, 10a or said second end 1b, 10b of at least one light permeable tube 1, 10 are attached to a corresponding first frame portion 11a, 11b by means of a joining means 120. Each of the at least two spatially separated light permeable tubes comprises at least one light detecting device 3, connectable to a processing unit 4, and arranged at a light detecting position of a corresponding light permeable tube 1, 10 and configured to detect light emitted from at least one light emitting device 2 through the corresponding light permeable tube 1, 10 and configured to transfer information comprising information relating to the detected light to the processing unit 4 to enable the processing unit to determine the bend of the light permeable tubes 1, 10. |
