To provide a centralized control system for defending and taking countermeasures against an illegal access. The apparatus includes a frame means, with a hand engagement means, a seat support means, and a power transfer means are all pivotally mounted to the frame means. This tiered spring arrangement provides an enhanced counterweighting force to the mattress support frame, assisting a user when raising or lowering the bed. Each retaining element is bent to latch with one of the latching elements so the camera bezel is fixed to the housing. In particular, the system permits the optical detection of distant objects, such as poorly recognizable obstacles, in the air space in the flight direction in front of an aircraft. The bearing vibration measuring apparatus detects a vibration component generated from the bearing in a state of pressing one of an inner ring and an outer ring of the bearing in an axial direction while relatively rotating other of the inner ring and the outer ring to detect a defect of the bearing based on the vibration component.