Video overlapping module applied to unmanned aerial vehicle

The invention discloses a video overlapping module applied to an unmanned aerial vehicle. The video overlapping module comprises a master controller, a power circuit, a video overlapping chip, a standard video signal simulation output circuit and a video signal output module, wherein the master controller is provided with a sensor expansion interface circuit, a mini SD card interface circuit and a USB interface circuit; the master controller adopts an STM32 microcontroller; and the video overlapping chip adopts DP7456 supporting Chinese. The video overlapping module provided by the invention is more practical, greatly enhanced from a hardware structure to a software system design compared with the traditional video overlapping module, can be applied to special unmanned aerial vehicles such as aerial survey unmanned aerial vehicles, aerial photographing unmanned aerial vehicles and investigation unmanned aerial vehicles. 本发明公开了种应用在无人机上的视频叠加模块，该视频叠加模块包括主控器、电源电路、视频叠加芯片、标准视频信号模拟输出电路、视频信号输出模块，所述主控器上设有传感器扩展接口电路、min