SENSOR APPARATUS FOR BODIES IN RELATIVE ROTATION

Sensor apparatus (100) for a first body (11) and a second body (12) in relative rotation, comprising: a sensor management device (101) arranged on the first body (11); a sensor element (102) arranged on the second body (12); an electrical connection system (103) between the sensor element (102) and the sensor management device (101). The electrical connection system (103) comprises: at least one first plate element (104) constrained to the first body (11) and electrically connected to the sensor management device (101); at least one second plate element (105) constrained to the second body (12) and electrically connected to the sensor element (102). The first plate element (104) and the second plate element (105) are facing each other to provide a capacitive coupling in the electrical connection system (103). The sensor management device (101) comprises at least one power supply (111) configured to electrically power the sensor element (102). The sensor element is powered through the electrical connection system (103).