Building management system with declarative views of timeseries data

Patent metadata

Field	Value
Publication number	US-10095756-B2
Application number	US-201715644519-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Feb 10, 2017
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A building management system (BMS) includes building equipment configured to provide raw data samples of one or more data points in the BMS. The BMS further includes a data collector configured to collect raw data samples from the building equipment and generate one or more raw data timeseries comprising a plurality of the raw data samples. The BMS also includes a timeseries processing engine. The timeseries processing engine is configured to identify one or more timeseries processing workflows that apply to the raw data timeseries, each of the workflows comprising a predefined sequence of timeseries processing operation. The timeseries processing engine is further configured to process the raw data timeseries using the identified timeseries processing workflows to generate one or more derived data timeseries. The BMS further includes a timeseries storage interface configured to store the raw data timeseries and the derived data timeseries in a timeseries database.

First claim

What is claimed is:

1. A building management system comprising:
building equipment configured to provide raw data samples of one or more data points in the building management system, the building equipment comprising one or more physical devices that operate to monitor or control a physical building condition;
a data collector configured to collect the raw data samples from the building equipment and generate one or more raw data timeseries comprising a plurality of the raw data samples;
a timeseries processing engine configured to:
receive one or more timeseries processing workflows that apply to the raw data timeseries, each of the timeseries processing workflows comprising a sequence of timeseries processing operations, the sequence of timeseries processing operations comprising a user defined fault rule that indicates whether one or more values of the raw data samples representing the physical building condition are fault values;
identify the one or more timeseries processing workflows that apply to the raw data timeseries; and
process the raw data timeseries using the identified timeseries processing workflows to generate one or more derived data timeseries and one or more fault timeseries, the one or more fault timeseries being generated in response to a determination, based on the user defined fault rule, that the one or more values of the raw data samples representing the physical building condition are the fault values; and

a timeseries storage interface configured to store the raw data timeseries and the derived data timeseries in a timeseries database;
wherein the timeseries processing engine is configured to generate a plurality of directed acyclic graphs, each directed acyclic graph corresponding to one of the timeseries processing workflows and visually representing the predefined sequence of timeseries processing operations in the corresponding workflow, wherein each directed acyclic graph comprises:
one or more input blocks representing one or more input timeseries to which the corresponding workflow applies;
one or more functional blocks representing the predefined sequence of timeseries processing operations in the corresponding workflow; and
one or more output blocks representing the one or more derived data timeseries generated by applying the predefined sequence of timeseries processing operations to the input timeseries.

2. The building management system of claim 1 , wherein each of the timeseries processing workflows comprises:
an indication of one or more input timeseries to which the workflow applies;
a predefined sequence of timeseries processing operations; and
an indication of one or more derived data timeseries generated by applying the predefined sequence of timeseries processing operations to the input timeseries.

3. The building management system of claim 2 , wherein the input timeseries comprise at least one of:
the one or more raw data timeseries generated by the data collector; or
the one or more derived data timeseries generated by the timeseries processing engine.

4. The building management system of claim 1 , wherein the timeseries processing engine is configured to:
receive user input via a graphical workflow editor, the user input comprising an adjustment to at least one of the input blocks, the functional blocks, or the output blocks in one of the directed acyclic graphs;
determine an adjustment to the corresponding timeseries processing workflow based on the user input; and
automatically apply the adjustment to the corresponding timeseries processing workflow in response to receiving the user input.

5. The building management system of claim 1 , wherein the timeseries processing engine is configured to optimize each of the timeseries processing workflows by combining two or more individual timeseries processing operations in a single workflow into a combined timeseries processing operation.

6. The building management system of claim 1 , wherein the timeseries processing engine is configured to optimize the timeseries processing workflows by:
identifying multiple timeseries processing workflows that require one or more shared input timeseries; and
combining the identified timeseries processing workflows into a single timeseries processing workflow.

7. The building management system of claim 1 , wherein the timeseries processing engine is configured to generate the derived data timeseries prior to a request for the derived data timeseries.

8. The building management system of claim 1 , further comprising a workflow manager configured to detect a change in one or more of the raw data timeseries or the derived data timeseries;
wherein the timeseries processing engine is configured to process the changed data timeseries in response to detecting the change.

9. The building management system of claim 8 , wherein processing the changed data timeseries in response to detecting the change comprises:
identifying one or more of the timeseries processing workflows that apply to the changed data timeseries;
identifying any other timeseries indicated as required inputs to the identified timeseries processing workflows; and
providing the changed data timeseries, the other timeseries indicated as required inputs, and the identified workflows to the timeseries processing engine.

10. The building management system of claim 9 , wherein the workflow manager is configured to:
receive, from the timeseries processing engine, a plurality of derived data samples generated by processing the changed data timeseries; and
generate one or more derived data sample timeseries comprising a plurality of the derived data samples.

11. A method for processing timeseries data in a building management system, the method comprising:
operating building equipment comprising one or more physical devices to monitor or control a physical building condition and to generate raw data samples of one or more data points in the building management system;
collecting the raw data samples from the building equipment;
generating one or more raw data timeseries comprising a plurality of the raw data samples;
receiving one or more timeseries processing workflows that apply to the raw data timeseries, each of the timeseries processing workflows comprising a sequence of timeseries processing operations, the sequence of timeseries processing operations comprising a user defined fault rule that indicates whether one or more values of the raw data samples representing the physical building condition are fault values;
identifying the one or more timeseries processing workflows that apply to the raw data timeseries;
processing the raw data timeseries using the identified timeseries processing workflows to generate one or more derived data timeseries and one or more fault timeseries, the one or more fault timeseries being generated in response to a determination, based on the user defined fault rule, that the one or more values of the raw data samples representing the physical building condition are the fault values;
storing the raw data timeseries and the derived data timeseries in a timeseries database; and
generating a plurality of directed acyclic graphs, each directed acyclic graph corresponding to one of the timeseries processing workflows and visually representing the predefined sequence of timeseries processing operations in the corresponding workflow, wherein each directed acyclic graph comprises:
one or more input blocks representing one or more input timeseries to which the corresponding workflow applies;
one or more functional blocks representing the predefined sequence of timeseries processing operations in the corresponding workflow; and
one or more outpu

Assignees

• Johnson Controls Tech Co

Inventors

• Park Youngchoon
• Sinha Sudhi R
• Chennupati Vijaya S
• Venkiteswaran Vaidhyanathan
• Pourmohammad Sajjad
• Paulson Erik S
• Ma Ada L
• Asp Gerald A

Classifications

• G05D23/1931

  to control the temperature of one space · CPC title

• G05B15/02

  electric · CPC title

• G06F16/22

  Indexing; Data structures therefor; Storage structures · CPC title

• G06F16/2322

  using timestamps · CPC title

• G06F16/2477 Primary

  Temporal data queries · CPC title