# US 10,871,300 B2 · Operating heating, ventilation, and air conditioning systems using occupancy sensing systems

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- Number: US 10,871,300 B2
- Document ID: US10871300B2
- Status: Granted
- Kind: B2
- Application number: 16/224,670
- Filed: 2018-12-18
- Published: 2020-06-18
- Granted: 2020-12-22
- Earliest claimed: 2018-12-18
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Petr Endel; Karel Marik; Ondrej Holub
- Web page: https://patentgrep.com/patent/US10871300B2

## CPC

- F24F 11/46: Improving electric energy efficiency or saving
- F24F 11/64: using pre-stored data
- F24F 11/30: for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F 11/49: ensuring correct operation, e.g. by trial operation or configuration checks
- F24F 11/62: characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F 11/65: for selecting an operating mode
- G05B 15/02: electric
- F24F 11/72: for controlling the supply of treated air, e.g. its pressure
- F24F 2120/10: Occupancy
- F24F 2120/12: Position of occupants
- G05B 2219/2614: HVAC, heating, ventillation, climate control
- Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
- 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)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

Operating HVAC systems using occupancy sensing systems is described herein. One device includes instructions to receive information defining a plurality of spaces of a building, occupancy sensing system information describing a location of each of a plurality of occupancy sensing system fixtures with respect to a representation of the building, and HVAC system information describing a relationship between the plurality of spaces and a plurality of HVAC devices in the building, create a mapping between a space, a fixture, and an HVAC device based on the building information, and modify an operation of the HVAC device based on the mapping and responsive to a determination of occupancy in the space by the fixture.

## Claims

### Claim 1

A non-transitory machine-readable medium having instructions stored thereon which, when executed by a processor, cause the processor to:
receive building information, wherein the building information includes:
occupancy sensing system information describing a coordinate location of each of a plurality of occupancy sensing system fixtures with respect to a first coordinate system associated with the building;
heating, ventilation, and air conditioning (HVAC) system information describing a coordinate location of each of the plurality of HVAC devices with respect to a second coordinate system associated with the building; and
space information defining a plurality of spaces of the building with respect to a third coordinate system;
create a mapping between a space of the plurality of spaces, a fixture of the plurality of fixtures, and an HVAC device of the plurality of HVAC devices based on the building information; and
modify an operation of the HVAC device based on the mapping and responsive to a determination of occupancy in the space by the fixture;
wherein at least one of the first coordinate system, the second coordinate system and the third coordinate system are different from others of the first coordinate system, the second coordinate system and the third coordinate system.

### Claim 2 (depends on 1)

The medium of claim 1, including instructions to:
receive the space information defining the plurality of spaces in a first format;
receive the occupancy sensing system information in a second format; and
receive the HVAC information in a third format.

### Claim 3 (depends on 2)

The medium of claim 2, including instructions to create the mapping in a fourth format.

### Claim 4 (depends on 1)

The medium of claim 1, including instructions to create a table that maps each fixture of the plurality of fixtures to a respective space of the plurality of spaces.

### Claim 5 (depends on 1)

The medium of claim 1, including instructions to create a table that maps each HVAC device of the plurality of HVAC devices to a respective space of the plurality of spaces.

### Claim 6 (depends on 1)

The medium of claim 1, including instructions to receive the HVAC system information describing the relationship between the plurality of spaces and a plurality of variable air volume (VAV) devices installed in the building and create a table that maps each VAV device of the plurality of VAV devices to a respective space of the plurality of spaces.

### Claim 7

A system, comprising:
a plurality of variable air volume (VAV) devices of a heating, ventilation, and air conditioning (HVAC) system installed in a building, where the plurality of VAV devices were installed in the building by a first entity over a first timeframe associated with a construction of the building;
a plurality of fixtures of an occupancy sensing system installed in the building, where the plurality of fixtures of the occupancy sensing system were installed in the building by a second entity over a second timeframe associated with a subsequent retrofitting of the building; and
a computing device including a processor and a memory having instructions stored thereon which, when executed by the processor, cause the processor to:
receive building information, wherein the building information includes:
information defining a plurality of spaces of the building;
occupancy sensing system information describing a location of each of the plurality of fixtures with respect to a representation of the building; and
HVAC system information describing a relationship between the plurality of spaces and the plurality of VAV devices;
create a mapping between a space of the plurality of spaces, a fixture of the plurality of fixtures, and a VAV device of the plurality of VAV devices based on the building information; and
modify an operation of the VAV device based on the mapping and responsive to a determination of occupancy in the space by the fixture.

### Claim 8 (depends on 7)

The system of claim 7, wherein the building information includes HVAC system information describing a diffuser relationship between the VAV device of the plurality of VAV devices and a diffuser of a plurality of diffusers of the HVAC system, and wherein the instructions include instructions to modify an operation of the diffuser, based on the diffuser relationship and the mapping, responsive to the determination of occupancy in the space by the fixture.

### Claim 9 (depends on 7)

The system of claim 7, wherein the building information includes HVAC system information describing a boiler relationship between the VAV device of the plurality of VAV devices and a boiler of a plurality of boilers of the HVAC system, and wherein the instructions include instructions to modify an operation of the boiler, based on the boiler relationship and the mapping, responsive to the determination of occupancy in the space by the fixture.

### Claim 10 (depends on 7)

The system of claim 7, wherein the building information includes HVAC system information describing a rooftop unit (RTU) relationship between the VAV device of the plurality of VAV devices and an RTU of a plurality of RTUs of the HVAC system, and wherein the instructions include instructions to modify an operation of the RTU, based on the RTU relationship and the mapping, responsive to the determination of occupancy in the space by the fixture.

### Claim 11

A method of operating a heating, ventilation, and air conditioning system using an occupancy sensing system, comprising:
receiving space information defining a plurality of spaces of a building;
receiving occupancy sensing system information as an image file describing a location of each of a plurality of fixtures of an occupancy sensing system installed in the building with respect to a representation of the building; and
receiving heating, ventilation, and air conditioning (HVAC) information describing a relationship between the plurality of spaces and a plurality of variable air volume (VAV) devices installed in the building, where the HVAC information and the space information are received from a building information model (BIM) associated with the building;
creating a mapping between a space of the plurality of spaces, a fixture of the plurality of fixtures, and a VAV device of the plurality of VAV devices based on the space information, the occupancy sensing system information, and the HVAC information; and
modifying an operation of the VAV device based on the mapping and responsive to a determination of occupancy in the space by the fixture.

### Claim 12 (depends on 11)

The method of claim 11, wherein the method includes querying an application programming interface associated with the occupancy sensing system.

### Claim 13 (depends on 12)

The method of claim 12, wherein the method includes receiving the occupancy sensing system information in response to the query in a text format describing each of the plurality of fixtures using a unique identifier and a unique set of coordinates.

### Claim 14 (depends on 11)

The method of claim 11, wherein the method includes providing an interface configured to receive user inputs to define each of the plurality of spaces of the building as a respective polygon in a floorplan associated with the building.

### Claim 15 (depends on 11)

The method of claim 11, wherein the method includes receiving the HVAC information and the space information from a BIM file associated with the building.

### Claim 16 (depends on 11)

The method of claim 11, wherein the method includes receiving the occupancy sensing system information as a bitmap file describing the location of each of the plurality of fixtures of the occupancy sensing system installed in the building with respect to the representation of the building.