System and method for occupancy estimation
First Claim
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1. A system for estimating in a region, the system comprising:
- an input operably connected to receive sensor data from one or more sensor devices for a current period;
an occupancy estimator operably connected to the input, wherein the occupancy estimator is configured to generate an occupancy, estimate based on an additive combinations of an estimate for the region based on the received sensor data, anda predictive model-based occupancy estimate generated by an occupant traffic model for a previous period; and
an output operably connected to the occupancy estimator to communicate the occupancy estimate generated by the occupancy estimator;
wherein the occupancy estimator calculates a weighting parameter based, at least in part, on the received sensor data and the occupant traffic model and generates. the occupancy estimate based on the calculated weighting parameter.
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Abstract
An occupancy estimator calculates an occupancy estimate (x) of a region based on sensor data (z) provided by one or more sensor devices and a model-based occupancy estimate generated by an occupant traffic model (f). The occupant traffic model (f) is based on predicted movement of occupants throughout a region. The occupancy estimation system includes an occupancy estimator algorithm (20) that combines the sensor data (z) and the model-based occupancy estimate generated by the occupant traffic model (f) to generate an occupancy estimate (x) for the region.
32 Citations
19 Claims
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1. A system for estimating in a region, the system comprising:
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an input operably connected to receive sensor data from one or more sensor devices for a current period; an occupancy estimator operably connected to the input, wherein the occupancy estimator is configured to generate an occupancy, estimate based on an additive combinations of an estimate for the region based on the received sensor data, and a predictive model-based occupancy estimate generated by an occupant traffic model for a previous period; and an output operably connected to the occupancy estimator to communicate the occupancy estimate generated by the occupancy estimator; wherein the occupancy estimator calculates a weighting parameter based, at least in part, on the received sensor data and the occupant traffic model and generates. the occupancy estimate based on the calculated weighting parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for estimating in a region, the system comprising:
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an input connected to receive sensor data from one or more sensor devices for a current period; an occupancy estimator operably connected to the input wherein the occupancy estimator is configured to generate an occupancy estimate based on an additive combinations of an estimate for the region based on the received sensor data, and a predictive model-based occupancy estimate generated by an occupant traffic model for a previous period; and an output operably connected to the occupancy estimator to communicate the occupancy estimate generated by the occupancy estimator;
whereinthe occupancy estimate comprises a mean estimate of the number of occupants within the region, an estimate of occupant movement within the region a probability associated with all possible numbers of occupants associated with the region, a confidence level estimate, a predictive occupancy estimate generated with respect to future points in time, or a combination thereof wherein the reliability estimate includes a covariance value or a standard deviation value calculated with respect to the region.
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11. A system for estimating occupancy in a region the system comprising:
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an input operably connected to receive sensor data from one or more sensor devices for a current period; an occupancy estimator operably connected to the input, wherein the occupancy estimator is configured to generate an occupancy estimate based on an additive combinations of an estimate for the region based on the received sensor data, and a predictive model-based occupancy estimate generated by an occupant traffic model for a previous period; and an output operably connected to the occupancy estimator to communicate the occupancy, estimate generated by the occupancy estimator;
whereinthe algorithm employed by the occupancy estimator is comprises an Extended Kalman Filter that generates the occupancy estimate that includes a mean estimate of occupancy for the region and a covariance associated with each mean estimate of occupancy.
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12. A method for estimating occupancy in a region, the method comprising:
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acquiring sensor data from one or more sensor devices; calculating a model-based occupancy estimate based on an occupant traffic model that predicts movements of occupants within a region in a future period; and generating an occupancy estimate for the region based on an additive combination of the acquired sensor data and the model-based occupancy estimate;
whereincalculating the model-based occupancy estimate includes applying the occupant traffic model to a previous occupancy estimate. - View Dependent Claims (13, 14, 15, 16)
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17. A distributed system for estimating occupancy within a building, the system comprising:
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a first occupancy estimator connectable to receive sensor data associated with a first location and for executing an algorithm to generate a first occupancy estimate for the first location based on an additive combination of the received sensor data associated with the first location and a predictive model-based occupancy estimate generated for the first location b a first occupant traffic model; a second occupancy estimator connectable to receive sensor data associated with a second location and for executing an algorithm to generate a second occupancy estimate for the second location based on an additive combination of the received sensor data associated with the second location and a predictive model-based occupancy estimate generated for the second located by a second occupant traffic mode; and a communication network connecting the first occupancy estimator to the second occupancy estimator, wherein the first occupancy estimator communicates the first occupancy estimate to the second occupancy estimator. - View Dependent Claims (18, 19)
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Specification