Device and method for automatically regulating and controlling excavation depth

The invention relates to an automatic digging depth regulation and control device and method, and belongs to the field of application of information technology to agricultural machinery. The device comprises a harvesting table rack, an L-shaped forward-extending digging shovel and a clamping conveying chain. The harvesting table rack is hinged to the rear end of a depth wheel rocker arm, a depth wheel is installed at the front end of the depth wheel rocker arm, the middle of the depth wheel rocker arm is hinged to one end of a power push rod, and the other end of the power push rod is hinged to the lower front end of the harvesting table rack. The harvesting table rack is provided with an industrial camera facing the front garlic bulb part, and one side of the power push rod is provided with a displacement sensor; signal output ends of the industrial camera and the displacement sensor are respectively connected with corresponding signal ports of the main control unit through the upper computer and the analog/