Abstract: The invention relates to an unmanned aerial vehicle (UAV) and an image recognition method applied to a UAV. The image recognition method includes: obtaining an image data stream, wherein the image data frame includes a current frame; performing image recognition on an object in the current frame to generate a first box corresponding to the current frame; detecting movement of the object to generate a second box corresponding to the current frame; and determining the object as a tracking target according to the first box and the second box. A moving object can be accurately identified, detected, and tracked according to the UAV and the image recognition method provided in embodiments of the invention.

Abstract: A projection system and a method for calibrating display image are provided. The method includes: setting a correction image having identification patterns, and establishing first coordinate information of the identification patterns; using a projection device to project the correction image on a display screen; performing an image capturing operation to the correction image and the display screen to obtain a captured image; calculating second coordinate information of the identification patterns in the captured image, and calculating coordinate translation information according to the first coordinate information and the second coordinate information; calculating boundary information of the display screen according to a plurality of boundary coordinate values of the display screen in the captured image and the coordinate translation information, such that the projection device adjusts a size of a projection image for corresponding to the display screen according to the boundary information.

Abstract: A projection system and a method for calibrating display image are provided. The method includes: setting a correction image having identification patterns, and establishing first coordinate information of the identification patterns; using a projection device to project the correction image on a display screen; performing an image capturing operation to the correction image and the display screen to obtain a captured image; calculating second coordinate information of the identification patterns in the captured image, and calculating coordinate translation information according to the first coordinate information and the second coordinate information; calculating boundary information of the display screen according to a plurality of boundary coordinate values of the display screen in the captured image and the coordinate translation information, such that the projection device adjusts a size of a projection image for corresponding to the display screen according to the boundary information.

Abstract: A wave-shaped flow board suitable for a fuel cell includes an injection-molded body substrate, a reaction zone recessed into a surface of the body substrate, and a wave-shaped current collector, which defines a plurality of independent fuel channels. The wave-shaped current collector is integrally mounted in the reaction zone and comprises a bendable conductive lug portion for providing an electrical connection between the wave-shaped current collector and a circuit on the surface of the wave-shaped flow board.

Abstract: A flow board suited for fuel cell applications. The flow board includes a body substrate formed by injection molding methods, which is resistive to methanol or chemical corrosion and has superior mechanical properties. The flow board further includes a wave-shaped reaction zone having thereon a plurality of independent fuel channels. The body substrate and the wave-shaped reaction zone may be monolithic. Alternatively, a punched electrode plate affixed on the reaction zone may define the plurality of independent fuel channels.

Abstract: A fuel cell module includes a cathode board, an integral flow board integrated with a plurality of wave-shaped anode plates and membrane electrode assembly (MEA) interposed between the cathode board and the integral flow board. The integral flow board has a body substrate that is formed of ejection moldable polymers by using ejection-molding techniques. The wave-shaped anode plate defines a plurality of independent flow channels and is fittingly affixed in corresponding reaction zone of the body substrate.

Abstract: A fuel cell system has fuel cell units, a cycling fuel container with a vent device, a control device, a cycling pump, a fan, a fuel injection device, and an alarm coupled to the control device. The control device monitors a working voltage of the fuel cell system. If the working voltage is detected to be lower than a predetermined low value, the alarm is triggered to inform an operator or user to refill the cycling fuel container by using the fuel injection device.

Abstract: A flow board suited for fuel cell applications. The flow board includes a body substrate formed by injection molding methods, which is resistive to methanol or chemical corrosion and has superior mechanical properties. The flow board further includes a wave-shaped reaction zone having thereon a plurality of independent fuel channels. The body substrate and the wave-shaped reaction zone may be monolithic. Alternatively, a punched electrode plate affixed on the reaction zone may define the plurality of independent fuel channels.

Abstract: A fuel cell module includes a cathode board, an integral flow board integrated with a plurality of wave-shaped anode plates and membrane electrode assembly (MEA) interposed between the cathode board and the integral flow board. The integral flow board has a body substrate that is formed of ejection moldable polymers by using ejection-molding techniques. The wave-shaped anode plate defines a plurality of independent flow channels and is fittingly affixed in corresponding reaction zone of the body substrate.

Abstract: A flow board suitable for fuel cell applications is disclosed. The flow board includes a body substrate formed by injection molding methods, which is resistive to methanol or chemical corrosion and has superior mechanical properties. The flow board further includes a wave-shaped reaction zone having thereon a plurality of independent fuel channels. The body substrate and the wave-shaped reaction zone may be monolithic. Alternatively, a current collector affixed on the reaction zone may define the plurality of independent fuel channels.