Motion attitude capturing device and system of motion attitude capturing device

The utility model relates to a motion attitude capturing device and a system of the motion attitude capturing device. The motion attitude capturing device comprises a host computer and a plurality of sensor collection nodes, wherein the plurality of sensor collection nodes are used for collecting sensing data, generating attitude angle data according to the sensing data and outputting the attitude angle data; each sensor collection node comprises an external extension module, a main module, a power supply module, a transmission module and a host computer; wherein the external extension module is used for collecting the sensing data and calculating attitude angle data according to the sensing data; the main module is connected with the external extension module and is used for receiving the attitude angle data output by the external extension module and merging and synchronizing the attitude angle data output by the external extension module; the power supply module is connected with the main module and is used for providing electric power; the transmission module is connected with the main module and is used for outputting the merged and synchronized attitude angle data; and the host computer is used for receiving the attitude angle data and generating attitude data according to the attitude angle.