Spherical multi-axis optical fiber sensing device, assembling method and movable device

A movable device, comprising:

• a movable part, making the movable device move and/or rotate;
• a spherical multi-axis optical fiber sensing device, disposed in the movable device, used to sense a motion signal of multiple axes, comprising:
• a first fiber ring;
• a first fixing frame, having a ring portion being surrounded and contacted by the first fiber ring for fixing the first fiber ring outside the first fixing frame;
• a second fixing frame, having a ring portion which has a plurality of fixing holes used for receiving a plurality of bearing portions of the first fixing frame, so as to fix the first fixing frame within the second fixing frame, wherein the ring portion of the first fixing frame is connected to the bearing portions of the first fixing frame;
• a second fiber ring, surrounding and contacting the ring portion of the second fixing frame, so as to be fixed outside the second fixing frame;
• a third fixing frame, having a ring portion which has a plurality of fixing holes used for receiving a plurality of bearing portions of the second fixing frame, so as to fix the second fixing frame within the third fixing frame, wherein the ring portion of the second fixing frame is connected to the bearing portions of the second fixing frame;
• and
• a third fiber ring, surrounding and contacting the ring portion of the third fixing frame, so as to be fixed outside the third fixing frame;
• and
• a control unit, signally connected to the spherical multi-axis optical fiber sensing device for receiving the motion signal, so as to control movement and/or rotation of the movable part.

An assembling method of a spherical multi-axis optical fiber sensing device, comprising:

• making two first fixing frame components move face by face to be sleeved in a first fiber ring, such that the first fixing frame components form a first fixing frame, wherein a ring portion of the first fixing frame is surrounded and contacted by the first fiber ring, so as to fix the first fiber ring outside the first fixing frame;
• making an assembly assembled by the first fiber ring and the first fixing frame be disposed in a second fiber ring, and making a normal line direction of the first fiber ring be perpendicular to a normal line direction of the second fiber ring, making two second fixing frame components move face by face to be sleeved in the second fiber ring, such that the second fixing frame components form a second fixing frame, wherein a plurality of fixing holes of a ring portion of the second fixing frame is used to receive a plurality of bearing portions of the first fixing frame, such that the first fixing frame is fixed in the second fixing frame, the ring portion of the first fixing frame is connected to the bearing portions of the first fixing frame, and the second fiber ring surrounds and contacts the ring portion of the second fixing frame, so as to fix the second fiber ring outside the second fixing frame;
• and
• making an assembly assembled by the first fiber ring, the first fixing frame, the second fiber ring and the second fixing frame be disposed in a third fiber ring, making a normal line direction of the third fiber ring be perpendicular to the normal line direction of the first fiber ring and the normal line direction of the second fiber ring, making two third fixing frame components move face by face to be sleeved in the third fiber ring, such that the third fixing frame components form a third fixing frame, wherein a ring portion of the third fixing frame is surrounded and contacted by the third fiber ring, so as to fix the third fiber ring outside the third fixing frame.