A spherical semiconductor device 1a comprises three spherical semiconductors 10, 20 and 30, which are connected together. A monitoring chip includes a sensor, a microprocessor, a memory, a radio interface, an electric power controller and an electric power generator. The containers are oriented in the transverse direction in the cargo space or, more specifically, in a direction normal to the longitude direction that extends from the nose to the tail of the aircraft. By virtue of the device and the method, the fluctuations of the armature current or the armature voltage can be separated from the fluctuations of the motor current or the motor voltage over the full measurement range of the motor current or the motor voltage. The present invention provides a device which can enhance highly the solar collection density, centralize the energy conversionutilizing points, simplify the sunlight tracking mechanism, improve the mechanical reliability of the whole system, and lower the investment and the cost of operation. The detection element releases the adjustment elements for effecting the relative adjusting movement when wear occurs by the interaction with the component.