System for preserving and displaying process control data associated with an abnormal situation
First Claim
1. A system for processing data related to an abnormal process event in a controlled process, the system comprising:
- a controllera communication channel; and
an intelligent device having a processor, a memory, and an input device, the input device adapted to receive process variable data, the processor configured to temporarily store statistical data related to the received process variable data in the memory at a first sample rate and communicate the statistical data stored in the memory to the controller over the communication channel at a second sample rate.
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Accused Products
Abstract
A system for preserving process variable data relating to the operation of a process is provided. The system is adapted to preserve process variable data obtained before, during, and after the occurrence of an abnormal situation or event. The preserved process variable data maybe communicated from smart field devices or other intelligent equipment relating to the control of the process to a process controller or other higher level control device. The process controller or other higher level control device may then cause the preserved data to be displayed for an operator or other maintenance personnel. The preserved data may also be provided to other process control modules or abnormal situation prevention systems for further analysis to develop methods for preventing the abnormal situation from recurring in the future, or for taking additional steps based on the abnormal situation data to minimize or prevent a further deterioration of the process operation.
24 Citations
27 Claims
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1. A system for processing data related to an abnormal process event in a controlled process, the system comprising:
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a controller a communication channel; and an intelligent device having a processor, a memory, and an input device, the input device adapted to receive process variable data, the processor configured to temporarily store statistical data related to the received process variable data in the memory at a first sample rate and communicate the statistical data stored in the memory to the controller over the communication channel at a second sample rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A smart device for controlling at least one aspect of a process, the smart device comprising:
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a memory; an input adapted to receive process variable data; and a processor configured to store statistical data associated with the received process variable data in the memory at a first data sample rate, and to communicate the statistical data associated with the received process variable data to an external device at a second data sample rate. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of preserving process control data associated with an abnormal situation, the method comprising:
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receiving process variable data associated with a process; temporarily storing statistical data associated with the received process variable data in a memory at a first data sample rate; detecting an abnormal situation associated with the process; preserving a portion of the statistical data stored in the memory in response to the abnormal situation; and communicating the preserved portion of the statistical data associated with the received process control data over a communication channel at a second data sample rate. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification