MOTION DETECTION AUTOTUNING
First Claim
Patent Images
1. A control unit for limiting false detections of occupancy caused by air flow, the control unit comprising:
- a communications circuit configured to communicate over a network with a plurality of motion sensors that detect motion in an area;
an occupancy module configured to determine that the area is unoccupied; and
an autotune module configured to determine, for at least one of the motion sensors on the network, a tuned value set from a plurality of value sets such that the at least one of the motion sensors transmits an indication over the network to the communications circuit that the area is unoccupied when parameters of the at least one of the motion sensors are set to the tuned value set, and the area is determined by the occupancy module to be unoccupied.
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Abstract
A system may be provided for limiting false detections of occupancy caused by air flow. The system may include control unit and sensors that detect motion in one or more areas, where the control unit and the sensors are connected by a network. The control unit may determine that the area or areas are unoccupied, and autotune parameters of the sensors so that the sensors indicate that the area or areas are unoccupied.
11 Citations
18 Claims
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1. A control unit for limiting false detections of occupancy caused by air flow, the control unit comprising:
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a communications circuit configured to communicate over a network with a plurality of motion sensors that detect motion in an area; an occupancy module configured to determine that the area is unoccupied; and an autotune module configured to determine, for at least one of the motion sensors on the network, a tuned value set from a plurality of value sets such that the at least one of the motion sensors transmits an indication over the network to the communications circuit that the area is unoccupied when parameters of the at least one of the motion sensors are set to the tuned value set, and the area is determined by the occupancy module to be unoccupied. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A sensor gateway for limiting false detections of occupancy caused by air flow, the sensor gateway comprising:
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a communications circuit configured to communicate over a network with a control unit; a memory; and a processor configured to receive data over the network from the control unit via the communications circuit, wherein the data indicates an area is unoccupied, wherein; the processor is further configured to process a signal from a motion sensor positioned to detect movement in the area; and the memory comprises an autotune module configured to; iterate over a list of a plurality of values for a parameter of the motion sensor; cause the processor to set the parameter of the motion sensor to a respective one of the values, and determine, for the respective one of the values, whether the signal from the motion sensor indicates the area is unoccupied; and select a tuned value from the values such that the signal from the motion sensor indicates the area is unoccupied when the parameter of the motion sensor is set to the tuned value and the data from the control unit indicates the area is unoccupied. - View Dependent Claims (9, 10, 11, 12)
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13. A method to limit false detections of occupancy caused by air flow, the method comprising:
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determining at a control unit that an area monitored by a motion sensor is unoccupied, the control unit comprising a communications circuit that communicates with the motion sensor over a network; receiving a sensor signal at the control unit from the motion sensor over the network, the sensor signal indicating whether the motion sensor detects that the area is occupied; setting a parameter of the motion sensor to a plurality of value sets by transmitting parameter commands with the communications circuit over the network to the motion sensor, wherein a respective one of the value sets comprises a respective value for the parameter of the motion sensor; determining with the control unit, for the respective one of the value sets, whether the sensor signal indicates that the area is occupied when the parameter of the motion sensor is set to the respective value and when the area is determined by the control unit to be unoccupied; and selecting a tuned value set with the control unit from the value sets such that the sensor signal indicates the area is unoccupied when the parameter of the motion sensor is set to a tuned value in the tuned value set and the area is determined to be unoccupied by the control unit. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification