Granted Patent B2

US 12,529,491 · App. 17/737,427 · Granted Jan 20, 2026

Inventors: Rajiv Ramanasankaran (Santa Clara, CA); Ambuj Shatdal (Madison, WI); Michael James Risbeck (Madison, WI); Young Lee (Milwaukee, WI)

Assignee: TYCO FIRE & SECURITY GMBH

F24F11/63G05B19/042G06F11/3006G06F11/3409G05B2219/2614

Abstract

Claims (62)

1 . A building system comprising:

one or more memory devices storing instructions thereon that, when executed by one or more processors, cause the one or more processors to:

store a plurality of digital twins, the plurality of digital twins comprising a virtual representation of a building, wherein a first digital twin communicates with a first piece of building equipment to operate the first piece of building equipment and a second digital twin of the plurality of digital twins communicates with a second piece of building equipment to operate the second piece of building equipment;

store a plurality of diagnostics routines, each of the plurality of diagnostics routines testing a plurality of pieces of building equipment based on operational relationships between the plurality of pieces of building equipment;

select a diagnostics routine from the plurality of diagnostics routines for testing the first piece of building equipment and the second piece of building equipment by determining, based on the virtual representation of the building, that an operation of the first piece of building equipment is detectable by the second piece of building equipment;

execute the diagnostics routine comprising causing, by the first digital twin, the first piece of building equipment to perform the operation and receiving, by the second digital twin, one or more detections of the operation by the second piece of building equipment; and

generate a diagnostics report for the first piece of building equipment and the second piece of building equipment based on a result of the diagnostics routine.

2 . The building system of claim 1 , wherein the diagnostics report indicates a first performance of the first piece of building equipment and a second performance of the second piece of building equipment.

3 . The building system of claim 1 , wherein the diagnostics report indicates a state of the first piece of building equipment and a confidence level that the state determined for the first piece of building equipment is correct.

4 . The building system of claim 1 , wherein the instructions cause the one or more processors to:

detect an absence of one or more messages that were expected to be received from the second piece of building equipment responsive to operating the first piece of building equipment; and

generate the diagnostics report based on an indication of the absence of the one or more messages.

5 . The building system of claim 1 , wherein the instructions cause the one or more processors to:

determine, based on the virtual representation of the building, one or more operational capabilities of the first piece of building equipment, the one or more operational capabilities indicating an ability of the first piece of building equipment to perform the operation; and

cause, by the first digital twin, the first piece of building equipment to perform the operation by communicating one or more messages to the first piece of building equipment based on the one or more operational capabilities of the first piece of building equipment.

6 . The building system of claim 5 , wherein the virtual representation of the building is a building graph comprising a plurality of nodes and a plurality of edges;

wherein a first node of the plurality of nodes represents the first piece of building equipment;

wherein one or more second nodes of the plurality of nodes represent the one or more operational capabilities of the first piece of building equipment;

wherein one or more edges of the plurality of edges link the first node to the one or more second nodes;

wherein the instructions cause the one or more processors to determine the one or more operational capabilities by identifying the one or more edges linking the first node to the one or more second nodes.

7 . The building system of claim 1 , wherein the instructions cause the one or more processors to:

generate an overall functionality indicator for the first piece of building equipment based on the result of the diagnostics routine.

8 . The building system of claim 7 , wherein the virtual representation of the building is a building graph comprising a plurality of nodes representing a plurality of entities of the building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities;

wherein a first node of the plurality of nodes represents the first piece of building equipment and a second node of the plurality of nodes represents the overall functionality indicator and is related to the first node via an edge of the plurality of edges.

9 . The building system of claim 1 , wherein the virtual representation of the building is a building graph comprising a plurality of nodes representing a plurality of entities of the building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities.

10 . The building system of claim 9 , wherein:

a first node of the plurality of nodes represents the first piece of building equipment;

a second node of the plurality of nodes represents the second piece of building equipment; and

one or more edges of the plurality of edges relate the first node to the second node indicating that the operation of the first piece of building equipment is detectable by the second piece of building equipment;

wherein the instructions cause the one or more processors to determine that the operation of the first piece of building equipment is detectable by the second piece of building equipment by identifying the one or more edges of the plurality of edges relating the first node to the second node.

11 . The building system of claim 10 , wherein:

a third node of the plurality of nodes indicates a space of the building;

a first edge of the one or more edges between the third node and the first node indicates that the first piece of building equipment is located in the space of the building;

a second edge of the one or more edges between the third node and the second node indicates that the second piece of building equipment is located in the space of the building.

12 . A method comprising:

storing, by a processing circuit, a plurality of digital twins on a memory device, the plurality of digital twins comprising a virtual representation of a building, wherein a first digital twin communicates with a first piece of building equipment to operate the first piece of building equipment and a second digital twin of the plurality of digital twins communicates with a second piece of building equipment to operate the second piece of building equipment;

storing, by the processing circuit, a plurality of diagnostics routines on the memory device, each of the plurality of diagnostics routines testing a plurality of pieces of building equipment based on operational relationships between the plurality of pieces of building equipment;

selecting, by the processing circuit, a diagnostics routine from the plurality of diagnostics routines for testing the first piece of building equipment and the second piece of building equipment by determining, based on the virtual representation of the building, that an operation of the first piece of building equipment is detectable by the second piece of building equipment;

executing, by the processing circuit, the diagnostics routine comprising causing, by the first digital twin, the first piece of building equipment to perform the operation and receiving, by the second digital twin, one or more detections of the operation by the second piece of building equipment; and

generating, by the processing circuit, a diagnostics report for the first piece of building equipment and the second piece of building equipment based on a result of the diagnostics routine.

13 . The method of claim 12 , further comprising:

generating, by the processing circuit, an overall functionality indicator for the first piece of building equipment based on the result of the diagnostics routine.

14 . The method of claim 13 , wherein the virtual representation of the building is a building graph comprising a plurality of nodes representing a plurality of entities of the building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities;

wherein a first node of the plurality of nodes represents the first piece of building equipment and a second node of the plurality of nodes represents the overall functionality indicator and is related to the first node via an edge of the plurality of edges.

15 . The method of claim 12 , wherein the virtual representation of the building is a building graph comprising a plurality of nodes representing a plurality of entities of the building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities.

16 . The method of claim 15 , wherein:

a first node of the plurality of nodes represents the first piece of building equipment;

a second node of the plurality of nodes represents the second piece of building equipment; and

one or more edges of the plurality of edges relate the first node to the second node indicating that the operation of the first piece of building equipment is detectable by the second piece of building equipment;

wherein the determining, by the processing circuit, that the operation of the first piece of building equipment is detectable by the second piece of building equipment by identifying the one or more edges of the plurality of edges relating the first node to the second node.

17 . The method of claim 16 , wherein:

a third node of the plurality of nodes indicates a space of the building;

a first edge of the one or more edges between the third node and the first node indicates that the first piece of building equipment is located in the space of the building;

a second edge of the one or more edges between the third node and the second node indicates that the second piece of building equipment is located in the space of the building.

18 . One or more non-transitory storage medium storing instructions thereon that, when executed by one or more processors, cause the one or more processors to:

store a plurality of digital twins, the plurality of digital twins comprising a virtual representation of a building, wherein a first digital twin communicates with a first piece of building equipment to operate the first piece of building equipment and a second digital twin of the plurality of digital twins communicates with a second piece of building equipment to operate the second piece of building equipment, wherein the virtual representation of the building includes a building graph comprising a plurality of nodes representing a plurality of entities of the building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities, wherein the plurality of nodes include:

a first node of the plurality of nodes represents the first piece of building equipment;

a second node of the plurality of nodes represents the second piece of building equipment; and

one or more edges of the plurality of edges relate the first node to the second node indicating that an operation of the first piece of building equipment is detectable by the second piece of building equipment;

determine, based on the virtual representation of the building, that the operation of the first piece of building equipment is detectable by the second piece of building equipment by identifying the one or more edges of the plurality of edges relating the first node to the second node;

execute a diagnostics routine comprising causing, by the first digital twin, the first piece of building equipment to perform the operation and receiving, by the second digital twin, one or more detections of the operation by the second piece of building equipment; and

generate a diagnostics report for the first piece of building equipment and the second piece of building equipment based on a result of the diagnostics routine.

Assignments (2)

Continuity (1)

References Cited (400)