Flotation dynamic performance measuring device, system and method

The invention discloses a flotation dynamic performance measuring device, system and method. The device comprises a transparent observing body (1), a sampling tube, a collecting and measuring barrel (3) and an image acquisition device (5). An observing cavity (13) is formed in transparent observing body (1); the sampling tube (2) is arranged at the bottom of the transparent observing body (1) and communicated with the observing cavity (13); the collecting and measuring barrel (3) is arranged at the top of the transparent observing body (1) and communicated with the observing cavity (13); a first water level line (L1) and a second water level line (L2) are arranged on the collecting and measuring barrel (3), and the first water level line (L1) is higher than the second water level line (L2); the image acquisition device (5) is fixedly connected with the transparent observing body (1), and the observing cavity (3) is within the image acquisition range of the image acquisition device (5). The flotation dynamic performance measuring device is strong in reliability, high in measuring accuracy, stable in operation, convenient to carry and easy to operate and will not generate human reading errors.