Adaptive adjustment of motion sensitivity of a motion sensor

1. A motion sensing apparatus, comprising:

a motion sensor, wherein the motion sensor generates an output that indicates whether or not motion has been sensed by the motion sensor, wherein the motion sensor receives a motion sensitivity input, wherein the motion sensitivity input controls a level of motion sensitivity of the motion sensor; and

a controller, wherein the controller generates the motion sensitivity input based at least in part on the output of the motion sensor.

2. The apparatus of claim 1 , wherein the controller generates the motion sensitivity input based at least in part on the output of the motion sensor over time.

3. The apparatus of claim 2 , wherein the controller generates the motion sensitivity input based at least in part on the output of the motion sensor over time intervals.

4. The apparatus of claim 1 , wherein the controller generates the motion sensitivity input based at least in part on the output of the motion sensor and an external occupancy indicator that indicates a sensed occupancy of an area associated with the motion sensing apparatus.

5. The apparatus of claim 4 , wherein the external occupancy indicator is generated based on sensing a behavior of a building fixture associated with the motion sensing apparatus.

6. The apparatus of claim 5 , wherein the external occupancy indicator is generated based on sensing energy consumption information of the building fixture associated with the motion sensing apparatus.

7. The apparatus of claim 5 , wherein the external occupancy indicator is generated based on sensing light intensity information of the building fixture associated with the motion sensing apparatus.

8. The apparatus of claim 4 , wherein the external occupancy indicator is generated based on motion sensor indicators of one or more external occupancy sensors.

9. The apparatus of claim 8 , wherein the external occupancy indicator is generated based at least in part on the on motion sensor indicators of one or more external occupancy sensors over time.

10. The apparatus of claim 8 , wherein the external occupancy indicator is generated by receiving and processing a plurality of external occupancy sensor indicators from a plurality of external occupancy sensors.

11. The apparatus of claim 10 , the external occupancy indicator is generated by a weighting an influence of one or more of the plurality of external occupancy sensor indicators.

12. The apparatus of claim 11 , wherein the weighting is influenced by a proximity of one or more of the plurality of external occupancy sensors.

13. A method of motion sensing, comprising

generating, by a motion sensor, an output that indicates whether or not motion has been sensed by the motion sensor, wherein the motion sensor receives a motion sensitivity input, wherein the motion sensitivity input controls a level of motion sensitivity of the motion sensor; and

generating, by a controller, the motion sensitivity input based at least in part on the output of the motion sensor.

14. The method of claim 13 , wherein the controller generates the motion sensitivity input based at least in part on the output of the motion sensor over time.

15. The method of claim 13 , wherein the controller generates the motion sensitivity input based at least in part on the output of the motion sensor and an external occupancy indicator that indicates a sensed occupancy of an area associated with the motion sensing apparatus.

16. The method of claim 13 , wherein the external occupancy indicator is generated based on sensing a behavior of a building fixture associated with the motion sensing apparatus.

17. The method of claim 13 , wherein the external occupancy indicator is generated based on motion sensor indicators of one or more external occupancy sensors.

18. The method of claim 17 , wherein the external occupancy indicator is generated based at least in part on the motion sensor indicators of one or more external occupancy sensors over time.

19. The method of claim 17 , wherein the external occupancy indicator is generated by receiving and processing a plurality of external occupancy sensor indicators from a plurality of external occupancy sensors.

20. The method of claim 17 , wherein the external occupancy indicator is generated by a weighting an influence of one or more of the plurality of external occupancy sensor indicators.

21. The method of claim 17 , wherein the weighting is influenced by a proximity of one or more of the plurality of external occupancy sensors.