Patent US6397114B1 successfully refreshed from Google Patents.
US6397114B1
Expired / Lapsed
US
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Device in a process system for detecting events
Assignee: Rosemount Inc
•
Filing: 1999-05-03
•
Granted: 2002-05-28
•
Expires: 2019-05-03
Abstract
Abstract A process device couples to a process control loop. The process device receives process signals. A memory in the process device contains a nominal parameter value and a rule. Computing circuitry calculates a statistical parameter of the process signal and operates on the statistical parameter and the stored nominal value based upon the stored rule and responsively provides an event output based upon the operation. Output circuitry provides an output in response to the event output
Inventors
- 👤 Evren Eryurek
- 👤 Jogesh Warrior
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:41
CPC Classifications
G; G05; G05B; G05B23/00; G05B23/02; G05B23/0205; G05B23/0218; G05B23/0221; G05B13/00; G05B13/02; G05B13/0265; G05B13/0275; G05B21/00; G05B21/02; G05B23/0259; G05B23/0275; G05B23/0278
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
157 words
A process device coupled to a process control loop configured to control a process fluid, comprising: a process variable input to receive a process variable of the process control loop, the process variable related to the process; a process event input to receive a process event generated by a process device on the process control loop related to an occurrence of an event in the process, the process event selected from the group of process events consisting of drift, bias, noise, stuck and spike; a control signal input to receive a control signal and to control the process fluid; and an inference engine coupled to the process variable input the control signal input and the process event input, the inference engine having a faulty element output which is a function of the process variable, the control signal and the process event, the faulty element output identifies a faulty component in the process which caused the process event.
Claim 2
Dependent Claim
157 words
A process device coupled to a process control loop configured to control a process fluid, comprising: a process variable input to receive a process variable of the process control loop, the process variable related to the process; a process event input to receive a process event generated by a process device on the process control loop related to an occurrence of an event in the process, the process event selected from the group of process events consisting of drift, bias, noise, stuck and spike; a control signal input to receive a control signal and to control the process fluid; and an inference engine coupled to the process variable input the control signal input and the process event input, the inference engine having a faulty element output which is a function of the process variable, the control signal and the process event, the faulty element output identifies a faulty component in the process which caused the process event.
Claim 3
Dependent Claim
14 words
The process device of claim 1 wherein the inference engine includes stored process data.
Claim 4
Dependent Claim
14 words
The process device of claim 2 wherein the process data comprises process history information.
Claim 5
Dependent Claim
14 words
The process device of claim 2 wherein the process data comprises logged process variables.
Claim 6
Dependent Claim
15 words
The process device of claim 1 wherein the process event is detected with a rule.
Claim 7
Dependent Claim
23 words
The process device of claim 1 wherein the process event is detected with a rule, a nominal parameter value and a statistical parameter.
Claim 8
Dependent Claim
19 words
The process device of claim 6 wherein the nominal parameter value comprises a trained value and a sensitivity parameter.
Claim 9
Dependent Claim
29 words
The process device of claim 6 wherein the statistical parameter is selected from the group consisting of standard deviation, mean, sample variance, root-mean-square (RMS), range, and rate of change.
Claim 10
Dependent Claim
34 words
The process device of claim 1 wherein the process control loop is selected from the group consisting of two wire process control loops, three wire process control loops and four wire process control loops.
Claim 11
Dependent Claim
20 words
The process device of claim 9 wherein the device is completely powered with power received from the process control loop.
Claim 12
Dependent Claim
19 words
The process device of claim 1 wherein the inference engine includes computation circuitry operating in accordance with a rule.
Claim 13
Dependent Claim
25 words
The process device of claim 11 wherein the faulty element output is a function of a comparison of the control signal and the process variable.
Claim 14
Dependent Claim
19 words
The process device of claim 1 wherein the inference engine performs transmitter diagnostics in response to a process event.
Claim 15
Dependent Claim
22 words
The process device of claim 1 wherein the inference engine instructs a device on the process control loop to perform on-board diagnostics.
Claim 16
Dependent Claim
14 words
The process device of claim 1 wherein the faulty element output comprises a warning.
Claim 17
Dependent Claim
16 words
The process device of claim 1 wherein the faulty element output provides information to an operator.
Claim 18
Dependent Claim
13 words
The process device of claim 1 wherein the inference engine includes fuzzy logic.
Claim 19
Dependent Claim
14 words
The process device of claim 1 wherein the inference engine includes a neural network.
Claim 20
Dependent Claim
24 words
The process device of claim 1 wherein the inference engine examines the process event and identifies a specific event in the process control system.
Claim 21
Dependent Claim
23 words
The process device of claim 1 wherein the inference engine initiates a shutdown procedure to shut down the process in the process event.
Claim 22
Dependent Claim
13 words
The process device of claim 1 wherein the process device comprises a transmitter.
Claim 23
Dependent Claim
13 words
The process device of claim 1 wherein the process device comprises a controller.
Claim 24
Dependent Claim
13 words
The process device of claim 1 wherein the process device comprises a communicator.
Claim 25
Dependent Claim
15 words
The process device of claim 1 wherein the process device comprises a control room equipment.
Claim 26
Dependent Claim
13 words
The process device of claim 1 wherein the process device comprises a PC.
Claim 27
Dependent Claim
22 words
The process device of claim 1 wherein the inference engine examines a plurality of process variables in response to a process event.
Claim 28
Dependent Claim
21 words
The process device of claim 1 wherein the inference engine identifies a known device condition in response to a process event.
Claim 29
Dependent Claim
20 words
The process device of claim 1 wherein the inference engine identifies a faulty component in response to a process event.
Claim 30
Dependent Claim
14 words
The process device of claim 1 wherein the inference engine comprises an expert system.
Claim 31
Dependent Claim
21 words
The process device of claim 1 wherein the inference engine further provides a condition output which identifies a known process condition.
Claim 32
Independent Claim
121 words
A method of diagnosing a process controlled by a process control loop configured to control a process fluid, comprising: obtaining a process variable of the process control loop related to the operation of process; obtaining a process event related to an event generated by a process device on the process control loop in the process, the process selected from the group of process events consisting of drift, bias, noise, stuck and spike; obtaining a control signal used to control the process fluid; and computing a faulty element output related to a faulty element in the process control system in response to the process variable, the process event, and the control signal, the faulty element being the cause of the process event.
Claim 33
Independent Claim
121 words
A method of diagnosing a process controlled by a process control loop configured to control a process fluid, comprising: obtaining a process variable of the process control loop related to the operation of process; obtaining a process event related to an event generated by a process device on the process control loop in the process, the process selected from the group of process events consisting of drift, bias, noise, stuck and spike; obtaining a control signal used to control the process fluid; and computing a faulty element output related to a faulty element in the process control system in response to the process variable, the process event, and the control signal, the faulty element being the cause of the process event.
Claim 34
Dependent Claim
15 words
The method of claim 31 wherein providing a faulty element output includes informing an operator.
Claim 35
Dependent Claim
24 words
The method of claim 31 wherein providing a faulty element output comprises comparing the process variable, process event and control signal to process data.
Claim 36
Dependent Claim
13 words
The method of claim 31 wherein the process data comprises process history information.
Claim 37
Dependent Claim
13 words
The method of claim 31 wherein the process data comprises logged process variables.
Claim 38
Dependent Claim
14 words
The method of claim 31 wherein the process event is detected with a rule.
Claim 39
Dependent Claim
23 words
The method of claim 36 including detecting the process event by applying a rule using a nominal parameter value and a statistical parameter.
Claim 40
Dependent Claim
18 words
The method of claim 37 wherein the nominal parameter value comprises a trained value and a sensitivity parameter.
Claim 41
Dependent Claim
20 words
The method of claim 31 wherein providing a faulty element output includes instructing a process device to perform on-board diagnostics.
Claim 42
Dependent Claim
19 words
The method of claim 31 including evaluating results of the diagnostics through on-board diagnostics residents in a process device.
Claim 43
Dependent Claim
15 words
The method of claim 31 wherein providing a faulty element output includes identifying a component.
Claim 44
Dependent Claim
16 words
The method of claim 31 wherein providing a faulty element output includes identifying a process condition.
Claim 45
Dependent Claim
19 words
The method of claim 31 wherein providing a faulty element output includes applying fuzzy logic to the process variable.
Claim 46
Dependent Claim
20 words
The method of claim 31 wherein providing a faulty element output includes applying the process variable to a neural network.
Claim 47
Dependent Claim
19 words
The method of claim 31 wherein providing a faulty element output includes applying a rule to the process variable.
Claim 48
Dependent Claim
13 words
A process device comprising a transmitter implementing the method of claim 31 .
Claim 49
Dependent Claim
13 words
A process device comprising a controller implementing the method of claim 31 .
Claim 50
Dependent Claim
13 words
A process device comprising a PC implementing the method of claim 31 .
Claim 51
Dependent Claim
14 words
A process device comprising control room equipment implementing the method of claim 31 .
Claim 52
Dependent Claim
21 words
The method of claim 31 including identifying a known process condition in response to the variable, process event and control signal.
Claim 53
Dependent Claim
152 words
A computer-readable medium having stored thereon instructions executable by a microprocessor system in a process device to identify a fault in a process control loop configured to control a process fluid, the instructions comprising: obtaining a process variable of the process control loop related to operation of the process; obtaining a process event generated by a process device on the process control looprelated to an event in the process, the process selected from the group of process events consisting of drift, bias, noise, stuck and spike; obtaining a control signal used to control the process fluid; and computing a faulty element output related to a faulty element in the process control system in response to the process variable, the process event, and the control signal element in the process in response to the process variable, the process event, and the control signal, the faulty element being the cause of the process event.
Claim 54
Dependent Claim
152 words
A computer-readable medium having stored thereon instructions executable by a microprocessor system in a process device to identify a fault in a process control loop configured to control a process fluid, the instructions comprising: obtaining a process variable of the process control loop related to operation of the process; obtaining a process event generated by a process device on the process control looprelated to an event in the process, the process selected from the group of process events consisting of drift, bias, noise, stuck and spike; obtaining a control signal used to control the process fluid; and computing a faulty element output related to a faulty element in the process control system in response to the process variable, the process event, and the control signal element in the process in response to the process variable, the process event, and the control signal, the faulty element being the cause of the process event.
Claim 55
Dependent Claim
143 words
A process device coupled to a process control loop used to control a process fluid, comprising: a process variable input means for receiving a process variable of the process related to operation of the process; a process event input means for receiving a process event of the process controlled by the process control loop generated by a process device on the process control loop, the process selected from the group of process events consisting of drift, bias, noise, stuck and spike; a control signal input means for requiring a control signal used to control the process fluid; and inference engine means for providing a faulty element output as a function of the process variable control signal and the process event, the faulty element output identifying a faulty component in the process control system, the faulty element being the cause of the process event.
Claim 56
Dependent Claim
143 words
A process device coupled to a process control loop used to control a process fluid, comprising: a process variable input means for receiving a process variable of the process related to operation of the process; a process event input means for receiving a process event of the process controlled by the process control loop generated by a process device on the process control loop, the process selected from the group of process events consisting of drift, bias, noise, stuck and spike; a control signal input means for requiring a control signal used to control the process fluid; and inference engine means for providing a faulty element output as a function of the process variable control signal and the process event, the faulty element output identifying a faulty component in the process control system, the faulty element being the cause of the process event.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-05-27 | 2005-11-26 | 2006-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-05-27 | 2009-11-26 | 2010-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-05-27 | 2013-11-26 | 2014-05-28 | $7700.00 | Window Closed / Lapsed |