Granted Patent B2

US 12,372,955 · App. 17/737,436 · Granted Jul 29, 2025

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

Assignee: TYCO FIRE & SECURITY GMBH

G05B23/0243G06F16/9024

Abstract

Claims (80)

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 digital twin comprising a building graph, the building graph comprising a plurality of nodes representing a plurality of entities of a building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities;

identify a piece of building equipment to perform a diagnostic on based on a first node of the plurality of nodes, the first node representing the piece of building equipment;

determine one or more diagnostic messages based on the building graph and communicate the one or more diagnostic messages, by the digital twin, to the piece of building equipment causing the piece of building equipment to perform one or more operations;

receive one or more diagnostic message responses from the piece of building equipment indicating the one or more operations of the piece of building equipment;

generate a value for a functionality indicator based on the one or more diagnostic messages, the functionality indicator identifying a performance level for the piece of building equipment;

identify a second node of the plurality of nodes representing the functionality indicator by identifying an edge of the plurality of edges relating the second node to the first node; and

cause the second node to store the value for the functionality indicator, or a link to the value for the functionality indicator.

2. The building system of claim 1 , wherein the functionality indicator indicates a state of the piece of building equipment and a confidence level that the state determined for the piece of building equipment is correct.

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

generate a first functionality indicator for a first operational capability of the piece of building equipment and a second functionality indicator for a second operational capability of the piece of building equipment; and

generate the value for the functionality indicator based on the first functionality indicator and the second functionality indicator.

4. The building system of claim 3 , wherein a third node of the plurality of nodes represents the first operational capability and a fourth node of the plurality of nodes represents the first functionality indicator and is related to the third node by a second edge of the plurality of edges;

wherein a fifth node of the plurality of nodes represents the second operational capability and a sixth node of the plurality of nodes represents the second functionality indicator and is related to the fifth node by a third edge of the plurality of edges;

wherein a fourth edge of the plurality of edges relates the first node to the third node;

wherein a fifth edge of the plurality of edges relates the first node to the fifth node.

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

detect an absence of one or more particular diagnostic message responses that were expected to be received from the piece of building equipment responsive to the one or more diagnostic messages; and

generate the value for the functionality indicator based on an indication of the absence of the one or more particular diagnostic message responses.

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

compare the one or more operations of the piece of building equipment to one or more expected operations associated with the one or more diagnostic messages; and

determine the value for the functionality indicator of the piece of building equipment based on a result of comparing the one or more operations of the piece of building equipment to the one or more expected operations.

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

determine, based on the building graph, that an operation of the piece of building equipment is detectable by a second piece of building equipment;

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

generate the value for the functionality indicator for the piece of building equipment based on a result of the diagnostics routine.

8. The building system of claim 7 , wherein:

a third 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 third node indicating that the operation of the 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 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 third node.

9. The building system of claim 8 , wherein:

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

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

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

10. A method comprising:

storing, by a processing circuit, a building graph comprising a plurality of nodes representing a plurality of entities of a building and a plurality of edges between the plurality of nodes representing a plurality of relationships;

identifying, by the processing circuit, a piece of building equipment to perform a diagnostic on based on a first node of the plurality of nodes, the first node representing the piece of building equipment;

determining, by the processing circuit, based on the building graph, that an operation of the piece of building equipment is detectable by a second piece of building equipment;

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

generating, by the processing circuit, a value for a functionality indicator based on a result of the diagnostics routine, the functionality indicator identifying a performance level for the piece of building equipment;

identifying, by the processing circuit, second node of the plurality of nodes representing the functionality indicator by identifying an edge of the plurality of edges relating the first node to the second node; and

causing, by the processing circuit, the second node of the digital twin representing the functionality indicator to store the value for the functionality indicator, or a link to the value for the functionality indicator.

11. The method of claim 10 , wherein the functionality indicator indicates a state of the piece of building equipment and a confidence level that the state determined for the piece of building equipment is correct.

12. The method of claim 10 , further comprising:

comparing, by the processing circuit, one or more operations of the piece of building equipment to one or more expected operations; and

determining, by the processing circuit, the value for the functionality indicator of the piece of building equipment based on a result of comparing the one or more operations of the piece of building equipment to the one or more expected operations.

13. The method of claim 10 , further comprising:

determining, by the processing circuit, one or more diagnostic messages based on the building graph and communicate the one or more diagnostic messages, by the digital twin, to the piece of building equipment causing the piece of building equipment to perform one or more operations;

receiving, by the processing circuit, one or more diagnostic message responses from the piece of building equipment indicating the one or more operations of the piece of building equipment; and

generating, by the processing circuit, the value for the functionality indicator based on the one or more diagnostic message responses.

14. The method of claim 10 , further comprising:

generating, by the processing circuit, a first functionality indicator for a first operational capability of the piece of building equipment and a second functionality indicator for a second operational capability of the piece of building equipment; and

generating, by the processing circuit, the value for the functionality indicator based on the first functionality indicator and the second functionality indicator.

15. The method of claim 14 , wherein a third node of the plurality of nodes represents the first operational capability and a fourth node of the plurality of nodes represents the first functionality indicator and is related to the third node by a second edge of the plurality of edges;

wherein a fifth node of the plurality of nodes represents the second operational capability and a sixth node of the plurality of nodes represents the second functionality indicator and is related to the third node by a third edge of the plurality of edges;

wherein a fourth edge of the plurality of edges relates the first node to the third node;

wherein a fifth edge of the plurality of edges relates the first node to the fifth node.

16. The method of claim 10 , wherein:

a third 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 third node indicating that the operation of the piece of building equipment is detectable by the second piece of building equipment;

wherein the method further comprises determining, by the processing circuit, that the operation of the 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 third node;

wherein:

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

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

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

17. 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 digital twin comprising a building graph, the building graph comprising a plurality of nodes representing a plurality of entities of a building and a plurality of edges between the plurality of nodes representing relationships between the plurality of entities;

identify a piece of building equipment to perform a diagnostic on based on a first node of the plurality of nodes, the first node representing the piece of building equipment;

determine one or more diagnostic messages based on the building graph and communicate the one or more diagnostic messages, by the digital twin, to the piece of building equipment causing the piece of building equipment to perform one or more operations;

receive one or more diagnostic message responses from the piece of building equipment indicating the one or more operations of the piece of building equipment;

generate a value for a functionality indicator based on the one or more diagnostic message responses, the functionality indicator identifying a performance level for the piece of building equipment;

generate a second node representing the functionality indicator and an edge to connect the first node and the second node; and

cause the building graph to include the second node and the edge connecting the first node and the second node.

18. The one or more non-transitory storage medium of claim 17 , wherein the instructions cause the one or more processors to:

detect an absence of one or more particular diagnostic message responses that were expected to be received from the piece of building equipment responsive to the one or more diagnostic messages; and

generate the value for the functionality indicator based on an indication of the absence of the one or more particular diagnostic message responses.

19. The one or more non-transitory storage medium of claim 17 , wherein the instructions cause the one or more processors to:

compare the one or more operations of the piece of building equipment to one or more expected operations associated with the one or more diagnostic messages; and

determine the value for the functionality indicator of the piece of building equipment based on a result of comparing the one or more operations of the piece of building equipment to the one or more expected operations.

Assignments (2)

Continuity (1)

References Cited (400)