The utility model provides a below sets up the grudging post, and base station top one side sets up the motor, and the motor drive mill is rotatory, sets up wireless vibration sensor on the mill that mill intelligence automatic speed adjustment system, one side of base station sets up the mill, the mill set up the trigger in the grudging post, set up the speed regulator between motor and the low -pressure control cabinet, set up data acquisition module between low -pressure control cabinet and the switch, switch setting is between wireless vibration signal processing and intelligent speed control tactics system and wireless vibration signal receiver, wireless vibration signal receiver one side sets up alternating current power supply, adopt the vibration condition of the interior medium impingement mill barrel wall of vibration sensor direct measurement mill, measuring means is more direct, the interference killing feature is stronger, the measuring -signal characteristic is more obvious, safety and reliability, economy and practicality. According to vibration data energy distribution picture, operating personnel can be accurate judges the height of material packing rate in the mill and steel ball ore grinding effect's quality, furthest's improvement grinding efficiency.