Detection device for bearings

A bearing detection device, comprising:

• a housing body prearranged for being fixed to a stationary ring of a bearing;
• and
• a detection arrangement on the housing body, comprising sensor means, which include at least one piezoelectric transducer,
• wherein the detection arrangement comprises:
• at least one floating body, mounted on the housing body and suitable for mechanically transmitting vibrations of the bearing,
• at least one sensor unit, mounted in a substantially stationary position on the housing body, the at least one sensor unit having at least one detection surface which is configured for receiving thereon, directly or via interposition of at least one further element, a corresponding surface of the at least one floating body,
• and wherein the at least one piezoelectric transducer defines at least part of the detection surface and is configured for generating an electrical potential difference that is substantially proportional to the magnitude of a stress or force exerted by the at least one floating body on the at least one piezoelectric transducer.