# US 2019/0316801 A1 · Building management system

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- Number: US 2019/0316801 A1
- Document ID: US20190316801A1
- Status: Published application
- Kind: A1
- Application number: 16/465,799
- Filed: 2017-12-01
- Published: 2019-10-17
- Earliest claimed: 2016-12-01
- Assignees: Carrier Corporation
- Applicants: Carrier Corporation
- Inventors: Luke Dorna; Chris Pietrzykowski; Ke Xu
- Web page: https://patentgrep.com/patent/US20190316801A1

## CPC

- F24F 11/63: Electronic processing
- G05B 15/02: electric
- F24F 11/46: Improving electric energy efficiency or saving
- F24F 2120/10: Occupancy
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

An environmental conditioning system for conditioning the environment of an occupiable region includes environmental conditioning hardware and a controller. The controller includes an occupancy module configured to receive ingress data associated with occupants entering the occupiable region for each of a first plurality of ingress iterations of a first prescribed time period. The controller further performs a first ingress rolling mean of the ingress data over the first plurality of ingress iterations, and compares at least the first ingress rolling mean to a first occupancy threshold. If the first occupancy threshold is exceeded by the first ingress rolling mean, the controller outputs a start command to the environmental conditioning hardware.

## Claims

### Claim 1

An environmental conditioning system for conditioning an environment of an occupiable region, the environmental conditioning system comprising:
environmental conditioning hardware constructed and arranged to condition the environment; and
a controller including an occupancy module configured to receive ingress data associated with occupants entering the occupiable region for each of a first plurality of ingress iterations of a first prescribed time period, perform a first ingress rolling mean of the ingress data over the first plurality of ingress iterations, compare at least the first ingress rolling mean to a first occupancy threshold, and output a start command to the environmental conditioning hardware when the first occupancy threshold is exceeded by the first ingress rolling mean.

### Claim 2 (depends on 1)

The environmental conditioning system set forth in claim 1, wherein the first plurality of ingress iterations is a plurality of a specific day of a week.

### Claim 3 (depends on 1)

The environmental conditioning system set forth in claim 1, wherein the ingress data is in-part associated with occupants entering the occupiable region for each of a second plurality of ingress iterations of a second prescribed time period, and the occupancy module is configured to perform a second ingress rolling mean, compare the second ingress rolling mean to a second occupancy threshold, and output the start command to the environmental conditioning hardware when the second occupancy threshold is exceeded by the second ingress rolling mean.

### Claim 4 (depends on 3)

The environmental conditioning system set forth in claim 3, wherein the first prescribed time period is one day of the week, and the second prescribed time period is another day of the week.

### Claim 5 (depends on 3)

The environmental conditioning system set forth in claim 3, wherein the first and second occupancy thresholds are the same.

### Claim 6 (depends on 3)

The environmental conditioning system set forth in claim 3, wherein the first and second plurality of iterations are each associated with a prescribed number of days.

### Claim 7 (depends on 6)

The environmental conditioning system set forth in claim 6, wherein the prescribed number of days is about five.

### Claim 8 (depends on 1)

The environmental condition system set forth in claim 1, wherein the controller includes a processor and a computer writeable and readable storage medium.

### Claim 9 (depends on 1)

The environmental conditioning system set forth in claim 1, wherein the controller includes a vacancy module configured to compare received egress data associated with occupants exiting the occupiable region for each of a first plurality of egress iterations of the first prescribed time period, perform a first egress rolling mean of the egress data over the first plurality of egress iterations, compare the first egress rolling mean to a first vacancy threshold, and output a shutdown command to the environmental conditioning hardware when the first vacancy threshold is exceeded by the first egress rolling mean.

### Claim 10 (depends on 9)

The environmental conditioning system set forth in claim 9, wherein first prescribed time period includes a plurality of time intervals and the first ingress rolling mean and the first egress rolling mean are each distributions over the plurality of time intervals.

### Claim 11 (depends on 10)

The environmental conditioning system set forth in claim 10, wherein the first egress distribution is subtracted from the first ingress distribution to establish a tabulation distribution that is compared to the first ingress and vacancy thresholds.

### Claim 12 (depends on 9)

The environmental conditioning system set forth in claim 9, wherein the controller is configured to compare the plurality of first egress iterations and the plurality of first ingress iterations to a deviation threshold and disregard the ingress and egress data for a particular time period that exceeds the deviation threshold.

### Claim 13 (depends on 1)

The environmental conditioning system set forth in claim 1, wherein the ingress data is generated by a sensing device.

### Claim 14 (depends on 9)

The environmental conditioning system set forth in claim 9, wherein at least one of the ingress and egress data are generated by a badge reader.

### Claim 15

A method of operating an environmental condition system comprising:
receiving ingress and egress data;
dividing the ingress and egress data into a plurality of ingress and egress data segments each associated with a respective one of a plurality of time periods;
dividing each of the plurality of time periods into a plurality of time intervals;
dividing each of the ingress and egress data segments into a plurality of respective ingress and egress data sub-segments such that each of the plurality of ingress and egress data sub-segments is associated with a respective one of the plurality of time intervals;
subtracting each of an egress data sub-segment of the plurality egress data sub-segments from a respective one of the plurality of ingress data sub-segments to formulate a tabulation distribution;
comparing the tabulation distribution to occupancy and vacancy thresholds;
starting environmental conditioning hardware if the occupancy threshold is exceeded; and
shutting down environmental conditioning hardware if the vacancy threshold is exceeded.

### Claim 16 (depends on 15)

The method set forth in claim 15 further comprising:
performing a plurality of iterations to establish a plurality of tabulation distributions over successive time periods for each one of the plurality of time periods; and
performing a rolling meadian of the plurality of tabulation distributions for each one of the plurality of time periods to establish a predicted tabulation distribution before comparing to the occupancy and vacancy thresholds.

### Claim 17 (depends on 16)

The method set forth in claim 16 further comprising:
establishing a total average tabulation distribution by averaging the plurality of tabulation distributions for all of the plurality of time periods; and
monitoring for a deviated tabulation distribution by comparing the total average tabulation distribution to each one of the plurality of tabulation distributions for each successive time period.

### Claim 18 (depends on 17)

The method set forth in claim 17 further comprising:
disregarding the deviated tabulation distribution for a specific time period of the plurality of time periods when performing the rolling meadian for that specific time period.

### Claim 19 (depends on 17)

The method set forth in claim 17, wherein the deviated tabulation distribution is deviated by about two standard deviations from the total average tabulation distribution.

### Claim 20 (depends on 18)

The method set forth in claim 18 further comprising:
notifying a user concerning the deviated tabulation distribution.