US 11,002,380 B2Granted

Methods and apparatus to validate valve position parameters

AssigneeFisher Controls International LLC

InventorsLorin Dion Miller, Eric William Strong, Gregory Wade Jacobs

Life of this patent

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Abstract

Methods, apparatus, and articles of manufacture to validate position parameters of a valve are disclosed. An example apparatus includes a field device, the field device further including a sensor interface to receive an unprocessed valve position parameter from a sensor and a position comparator to determine a deviation between the unprocessed valve position parameter and an interpreted valve position parameter and a valve position validator apparatus, the valve position validator apparatus further including a parameter comparator to determine if the deviation exceeds a threshold and an alert generator to generate an alert when the parameter comparator determines the deviation exceeds the threshold.

Claims14

Dependent claims

An apparatus comprising:

a field device, the field device further including:
a sensor interface to receive an unprocessed valve position parameter from a sensor;
a position transmitter;
a valve controller;
and
a position comparator to determine a deviation between the unprocessed valve position parameter and interpreted valve position parameters independently determined by at least one of the position transmitter or the valve controller based on the unprocessed valve position parameter by:
determining a first difference between the unprocessed valve position parameter and a first one of the valve position parameters determined by the position transmitter when the valve controller is not powered;
and
determining a second difference between at least one of the unprocessed valve position parameter, the first one of the valve position parameters, and a second one of the valve position parameters determined by the valve controller when the position transmitter and the valve controller are powered;
and
a valve position validator apparatus, the valve position validator apparatus further including:
a parameter comparator to determine if the deviation exceeds a threshold;
and
an alert generator to generate an alert when the parameter comparator determines the deviation exceeds the threshold.

11 more elements

A non-transitory computer readable storage medium comprising instructions which, when executed, cause a machine to at least:

receive an unprocessed valve position parameter from a sensor;
independently determine interpreted valve position parameters with at least one of a position transmitter or a valve controller based on the unprocessed valve position parameter;
determine a deviation between the unprocessed valve position parameter and the interpreted valve position parameters by:
determining a first difference between the unprocessed valve position parameter and a first one of the valve position parameters determined by the position transmitter when the valve controller is not powered;
and
determining a second difference between at least one of the unprocessed valve position parameter, the first one of the valve position parameters, and a second one of the valve position parameters determined by the valve controller when the position transmitter and the valve controller are powered;
determine if the deviation exceeds a threshold;
and
generate an alert when it is determined the deviation exceeds the threshold.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/889,885Filed 6 Feb 2018
Published: US 2019/0242496 A18 Aug 2019
Granted: 11 May 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16K 37/0083
For recording or indicating the functioning of a valve in combination with test equipment: by measuring valve parameters
G05B 19/0428
Using digital processors: safety, monitoring
G05B 19/058
Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts: safety, monitoring
G05B 2219/14006
Plc safety: safety, monitoring in general