Anti-pinch device, space computing device and hovering control device

A space computing device, for computing an occupied space of a target object, comprising:

• a light source, configured to emit light;
• an optical sensor, configured to sense optical data generated according to the light emitted to the target object;
• and
• a processing circuit, configured to compute the occupied space of the target object according to the optical data.

A hovering control device, comprising:

• at least one light source, configured to emit light;
• at least one optical sensor, configured to sense optical data generated according to the light emitted to an object;
• a plurality of control regions;
• and
• a processing circuit, configured to control the hovering control device to generate a control command according to if the optical data represents that the target object stops at a location corresponding to a first control region.