Abstract: A mobile device for detecting the state parameters and operating parameters of vibrating machines, which comprise sensor units and an evaluation unit connected to the sensor units, the measurement data detected by the sensor units being wirelessly transmittable to the evaluation unit, and each sensor unit being equipped with at least three acceleration sensors oriented orthogonally to each other and an integrated circuit for processing the measurement data detected by the sensor units, it is provided that at least four sensor units form a sensor network, the sensor units being detachably fastenable at a distance from each other with an undetermined orientation/direction to the vibrating machine, and a local coordinate system being defined by the at least three acceleration sensor of a sensor unit.