Sensor arrangement and rolling bearing having such a sensor arrangement
First Claim
1. A sensor arrangement comprising, a stationary part on which a primary coil is arranged that is connected with wires to a supply unit, a rotating part on which a sensor circuit and a secondary coil supplying said sensor circuit with electrical energy are mounted, the primary coil surrounds the rotating part with a ring-shape, the secondary coil is arranged concentrically within the primary coil, and the primary and secondary coils are part of an energy transmission unit that operates according to a Qi standard, and at least an operating energy for the sensor circuit is transmitted via an inductive coupling between the primary and secondary coils, and the stationary part is an outer ring of a rolling bearing and the primary coil is mounted on an outside of the outer ring.
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Accused Products
Abstract
The invention relates to a sensor arrangement on a rotary bearing which has a stationary bearing part and a rotatable bearing part. A primary coil is arranged on the stationary bearing part and is connected to a supply unit in a wired manner. A sensor circuit and a secondary coil supplying said circuit with electrical energy are fitted to the rotatable bearing part. According to the invention, the primary coil and the secondary coil are part of an energy transmission unit which is constructed according to the Qi standard. At least the operating energy for the sensor circuit, preferably also the data for communication between the sensor circuit and the supply unit, are transmitted via the inductive coupling between the primary coil and the secondary coil.
24 Citations
9 Claims
- 1. A sensor arrangement comprising, a stationary part on which a primary coil is arranged that is connected with wires to a supply unit, a rotating part on which a sensor circuit and a secondary coil supplying said sensor circuit with electrical energy are mounted, the primary coil surrounds the rotating part with a ring-shape, the secondary coil is arranged concentrically within the primary coil, and the primary and secondary coils are part of an energy transmission unit that operates according to a Qi standard, and at least an operating energy for the sensor circuit is transmitted via an inductive coupling between the primary and secondary coils, and the stationary part is an outer ring of a rolling bearing and the primary coil is mounted on an outside of the outer ring.
- 4. A sensor arrangement comprising, a stationary part on which a primary coil is arranged that is connected with wires to a supply unit, a rotating part on which a sensor circuit and a secondary coil supplying said sensor circuit with electrical energy are mounted, the primary coil surrounds the rotating part with a ring-shape, the secondary coil is arranged concentrically within the primary coil, and the primary and secondary coils are part of an energy transmission unit that operates according to a Qi standard, and at least an operating energy for the sensor circuit is transmitted via an inductive coupling between the primary and secondary coils, wherein the sensor circuit and the secondary coil are mounted on a flexible carrier that is connected to the rotating part.
- 7. A sensor arrangement comprising, a stationary part on which a primary coil is arranged that is connected with wires to a supply unit, a rotating part on which a sensor circuit and a secondary coil supplying said sensor circuit with electrical energy are mounted, the primary coil surrounds the rotating part with a ring-shape, the secondary coil is arranged concentrically within the primary coil, and the primary and secondary coils are part of an energy transmission unit that operates according to a Qi standard, and at least an operating energy for the sensor circuit is transmitted via an inductive coupling between the primary and secondary coils, wherein the supply unit comprises a first microprocessor that controls preparation of supply energy to the primary coil, imbeds control data onto a current fed into the primary coil, monitors a counter induction occurring in the primary coil, and processes response data from the sensor circuit.
Specification