US6389331B1
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Technique for monitoring performance of a facility management system
Assignee: Johnson Controls Technology Co
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Filing: 1999-03-11
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Granted: 2002-05-14
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Expires: 2019-03-11
Abstract
Abstract A facilities management system is subdivided into a plurality of subsystems. The performance of the system is monitored by producing data which denotes a plurality of operational parameters for each of the subsystems. From that data, a global performance index is derived for each subsystem, thus providing an indication of each subsystem's performance. The global performance indices are employed to produce a universal performance index for the entire facilities management system. This provides a hierarchy of data which enables an operator to quickly determine the overall performance of the facilities management system and each subsystem, and if warranted the operator can step through the data to identify malfunctioning components.
Inventors
- 👤 Howard A. Jensen
- 👤 John E. Seem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:06
CPC Classifications
G; G05; G05B; G05B23/00; G05B23/02; G05B23/0205; G05B23/0208; G05B23/0213; G05B23/0218; G05B23/0221
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
175 words
A method for monitoring performance of a facilities management system, the method comprising steps of: (a) subdividing the facilities management system into a plurality of subsystems; (b) producing numerical data denoting status of a plurality of operational parameters for each of the plurality of subsystems; (c) normalizing the data to produce normalized data; (d) for a given one of the plurality of subsystems, averaging the normalized data acquired during a period of time for a given one of the plurality of operational parameters; (e) repeating step (d) for all of the plurality of operational parameters for the given one of the plurality of subsystems, thereby producing a plurality of averaged data; (f) repeating steps (d) and (e) for all of the plurality of subsystems; (g) arithmetically producing a separate global performance index for each of the plurality of subsystems from the plurality of averaged data, thereby producing global performance indices; and (h) deriving a universal performance index from the global performance indices, wherein the universal performance index qualitatively denotes performance of the facilities management system.
Claim 2
Independent Claim
175 words
A method for monitoring performance of a facilities management system, the method comprising steps of: (a) subdividing the facilities management system into a plurality of subsystems; (b) producing numerical data denoting status of a plurality of operational parameters for each of the plurality of subsystems; (c) normalizing the data to produce normalized data; (d) for a given one of the plurality of subsystems, averaging the normalized data acquired during a period of time for a given one of the plurality of operational parameters; (e) repeating step (d) for all of the plurality of operational parameters for the given one of the plurality of subsystems, thereby producing a plurality of averaged data; (f) repeating steps (d) and (e) for all of the plurality of subsystems; (g) arithmetically producing a separate global performance index for each of the plurality of subsystems from the plurality of averaged data, thereby producing global performance indices; and (h) deriving a universal performance index from the global performance indices, wherein the universal performance index qualitatively denotes performance of the facilities management system.
Claim 3
Dependent Claim
21 words
The method as recited in claim 1 wherein the step of averaging the normalized data comprises computing exponential moving weighted averages.
Claim 4
Dependent Claim
89 words
The method as recited in claim 2 wherein the exponential moving weighted average is computed according to the expression: {tilde over (P)}t={tilde over (p)} t−T +λ(P t −{tilde over (P)} t−T ), where {tilde over (P)} t is an exponential moving weighted average of normalized data parameter P at time t, {tilde over (P)} t−T is an exponential moving weighted average of the normalized data item P at a prior time t−T, λ is an exponential smoothing constant, and P t is a normalized data item at time t.
Claim 5
Dependent Claim
29 words
The method as recited in claim 1 wherein the step of arithmetically producing a global index selects a worst case data average for each of the plurality of subsystems.
Claim 6
Dependent Claim
28 words
The method as recited in claim 1 wherein the step of arithmetically producing a global index comprises for each of the plurality of subsystems averaging the averaged data.
Claim 7
Dependent Claim
32 words
The method as recited in claim 1 wherein the step of arithmetically producing a global index comprises for each of the plurality of subsystems computing a weighted average of the averaged data.
Claim 8
Dependent Claim
127 words
The method as recited in claim 6 wherein computing the weighted average {overscore (P)} t is computed according to the expression: P t _ = w 1 P ~ 1 , t + w 2 P ~ 2 , t + … + w n P ~ n , t w 1 + w 2 + … + w n where the P ˜ 1,t is the value of parameter P 1 at time t, P ˜ 2,t is the value of parameter P 2 at time t, P ˜ n,t is the value of parameter P n at time t where n is an integer, and w 1 , w 2 , and w n are numerical values of weight assigned each parameter.
Claim 9
Dependent Claim
29 words
The method as recited in claim 1 wherein the step of deriving a universal performance index comprises selecting a worst case data average from among the plurality of subsystems.
Claim 10
Dependent Claim
23 words
The method as recited in claim 1 wherein the step of deriving a universal performance index comprises averaging the plurality of global indices.
Claim 11
Independent Claim
133 words
A method for monitoring performance of a facilities management system, the method comprising steps of: (a) subdividing the facilities management system into a plurality of subsystems; (b) producing data denoting a plurality of operational parameters for each of the plurality of subsystems; (c) deriving a global index from the data for the plurality of operational parameters for a given one of the plurality of subsystems, wherein the global index is a numerical value which qualitatively denotes performance of the given one of the plurality of subsystems; (d) repeating step (c) for other ones of the plurality of subsystems to produce a plurality of global indices; and (e) deriving a universal performance index from the global indices, wherein the global index is a single variable which qualitatively denotes performance of the facilities management system.
Claim 12
Independent Claim
133 words
A method for monitoring performance of a facilities management system, the method comprising steps of: (a) subdividing the facilities management system into a plurality of subsystems; (b) producing data denoting a plurality of operational parameters for each of the plurality of subsystems; (c) deriving a global index from the data for the plurality of operational parameters for a given one of the plurality of subsystems, wherein the global index is a numerical value which qualitatively denotes performance of the given one of the plurality of subsystems; (d) repeating step (c) for other ones of the plurality of subsystems to produce a plurality of global indices; and (e) deriving a universal performance index from the global indices, wherein the global index is a single variable which qualitatively denotes performance of the facilities management system.
Claim 13
Dependent Claim
25 words
The method as recited in claim 10 wherein the step of producing data comprises normalizing the data for each of the plurality of operational parameters.
Claim 14
Dependent Claim
30 words
The method as recited in claim 10 wherein the step of producing data comprises averaging data occurring during a period of time for each of the plurality of operational parameters.
Claim 15
Dependent Claim
19 words
The method as recited in claim 12 wherein the step of producing data comprises computing exponential moving weighted averages.
Claim 16
Dependent Claim
28 words
The method as recited in claim 12 wherein the step of producing a global index selects a worst case data average for each of the plurality of subsystems.
Claim 17
Dependent Claim
34 words
The method as recited in claim 10 wherein the step of deriving a global index comprises averaging the data denoting the plurality of operational parameters for the given one of the plurality of subsystems.
Claim 18
Dependent Claim
29 words
The method as recited in claim 15 wherein the step of deriving a universal performance index comprises selecting a worst case data average from among the plurality of subsystems.
Claim 19
Dependent Claim
23 words
The method as recited in claim 10 wherein the step of deriving a universal performance index comprises averaging the plurality of global indices.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-05-13 | 2005-11-12 | 2006-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-05-13 | 2009-11-12 | 2010-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-05-13 | 2013-11-12 | 2014-05-14 | $7700.00 | Window Closed / Lapsed |