Abstract: The present invention provides a method and a device for automatic inclination compensation of solar sunlight tracing panel. The device includes a plurality of solar panels adjacent to each other and capable of swinging towards sun. Two or more light sensors are separately installed on the light receiving end surface to be illuminated by sunlight and to generate electric potential signals. When comparing the electric potential signals and there is potential difference, the solar panels are driven to synchronically swing until the electric potential of the electric potential signal become the same. Thus the solar plane inclination is compensated and the whole light receiving end is illuminated by sun.

Abstract: The present invention provides a method and a device for automatic inclination compensation of solar sunlight tracing panel. The device includes a plurality of solar panels adjacent to each other and capable of swinging towards sun. Two or more light sensors are separately installed on the light receiving end surface to be illuminated by sunlight and to generate electric potential signals. When comparing the electric potential signals and there is potential difference, the solar panels are driven to synchronically swing until the electric potential of the electric potential signal become the same. Thus the solar plane inclination is compensated and the whole light receiving end is illuminated by sun.

Abstract: A solar module for greenhouse includes a plurality of non-light transmitting solar panels, installed at the top of a greenhouse and arranged vertically and horizontally to form a roof tilted in a particular light receiving direction. A planting area for growing plants is formed inside of the greenhouse and the roof separates the planting area from outside air. Thus, an integrated structure of solar panels and greenhouse is formed to save the construction expense for solar panels and greenhouse and to increase the efficiency for solar panels to receive sun radiation.

Abstract: A power switching apparatus for natural energy power supply includes a AC power supply provided by an electricity plant, a converting power supply connected with the AC power supply, a power switch connected with the converting power supply and an external load respectively, a charger connected with the power switch, at least a natural energy power supply connected with the charger, configured for generating electric power and supplying the electric power to the charger, a voltage sensor connected with the charger, and a battery pack connected with the voltage sensor. When there is not sufficient power output from the natural energy power supply, the AC power supply and the load are connected so that the object of uninterruptedly driving the load to work when the natural energy power supply stops working is achieved and the reliability of the natural energy power supply is improved.

Abstract: A natural energy power supplying apparatus includes an AC power supply, an inverter, a UPS control circuit, a discharging control circuit, a battery, an electromagnetic switch, a natural energy power supply (NEPS) and a charging control circuit. The inverter is connected to the AC power supply in parallel for converting DC power to AC power. The UPS control circuit is connected to the AC power supply for converting between an AC power and a DC power. The discharging control circuit is connected to the UPS control circuit. The battery is connected to the UPS control circuit and the discharging control circuit respectively. The electromagnetic switch, having multiple normally open switches and multiple normally closed switches, is connected to the AC power supply. The NEPS is connected to the inverter by the normally open switches. The charging control circuit is connected to the NEPS by the normally closed switches, to the battery, to the discharging control circuit, and to the UPS control circuit.

Abstract: A power switching apparatus for natural energy power supply includes a AC power supply provided by an electricity plant, a converting power supply connected with the AC power supply, a power switch connected with the converting power supply and an external load respectively, a charger connected with the power switch, at least a natural energy power supply connected with the charger, configured for generating electric power and supplying the electric power to the charger, a voltage sensor connected with the charger, and a battery pack connected with the voltage sensor. When there is not sufficient power output from the natural energy power supply, the AC power supply and the load are connected so that the object of uninterruptedly driving the load to work when the natural energy power supply stops working is achieved and the reliability of the natural energy power supply is improved.

Abstract: A dual-interface card reading device, having a main body and cover plate assembled to form an opening which accommodates insertion of a magnetic card or an IC card, one side of the opening defining a hollow slide groove to enable swiping of a magnetic card or an IC card. A magnetic head extends into the opening to read the magnetic card, and at one end of the hollow slide groove is an IC card contact interface for reading the IC card. A user can thus simultaneously swipe either type of card at an appropriate interface while achieving the effects of small size, low cost, and convenient operation.