Mine transient electromagnetic bottom plate detection device based on cosine theorem angle measurement

The utility model belongs to the technical field of mine geophysical exploration, and relates to a mine transient electromagnetic bottom plate detection device based on cosine theorem angle measurement, which comprises a fixed control system and an antenna hinged on the fixed control system, and further comprises an angle measurement system acting between the antenna and the fixed control system in a matching manner, the angle measuring system comprises a rotating pulley and an angle measuring rope, the rotating pulley acts on the fixed control system in a matched mode, one end of the angle measuring rope fixedly acts on the antenna, and the other end of the angle measuring rope moves on the rotating pulley in a matched mode; according to the utility model, the cosine law is utilized to convert the test length into the angle, thereby realizing rapid measurement and fixation of the angle; the device is simple, convenient, rapid, flexible and firm to assemble, the antenna detection direction is rapid, simple an