In a method and a device for activating passenger protection device, the passenger protection device are activated as a function of a first signal of an acceleration sensor system and a second signal of a structure-borne noise sensor system. The service platform apparatus 10 includes a generally planar platform 18 having a support surface 16. A rotational mechanism is fitted to a support, a U-shaped arm is mounted on the support with the X-ray tube and the X-ray information inputting means facing each other and fitted, and the image of an arbitrary size of an arbitrary part of the patient is collected and displayed as the patient is supported in a chair which is capable of being electrically-driven in the vertical direction. The machine tool further comprises a service life end detecting section for counting the number of times of actuation of the clamp unit and, when the count of the number reaches a predetermined reference actuation number, judging that the service life of the spring ends. The fins may be shaped as impellers to move oil over the heat-transfer structure. The outer jacket has therein a power input device that provides electric power to a carbon nanocapsule fiber composite layer of the inner lining through the conducting wire so that the carbon nanocapsule fiber composite layer is powered to give out heat and warm a user wearing the solar thermal coat assembly.