Variable-frequency vacuum pump system

The utility model discloses a variable-frequency vacuum pump system, which comprises a vacuum meter, a vacuum pump, a vacuum pump, a vacuum pump, a vacuum pump and a vacuum pump, and is characterized in that the vacuum meter is arranged on an under-membrane drainage cushion layer; the controller is connected with the vacuum meter through a 5G network, obtains the vacuum degree information and generates frequency conversion information according to the vacuum degree information; the frequency converter is connected with the controller through a 5G network and is used for acquiring the frequency conversion information; the permanent magnet synchronous motor is connected with the frequency converter through a 5G network and adjusts the rotating speed according to the frequency conversion information; and the vacuum pump is connected with the permanent magnet synchronous motor and is driven by the permanent magnet synchronous motor. According to the utility model, the vacuum meter capable of automatically acquiri