Diagnostics for industrial process control and measurement systems
AssigneeRosemount Inc.
InventorsEvren Eryurek, Dale W. Borgeson, Marcos Peluso, Gregory H. Rome, Weston R. Roper
Life of this patent
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Abstract
A field device includes diagnostic circuitry adapted to measure a characteristic related to a process control and measurement system. The measured characteristic is used to provide a diagnostic output indicative of a condition of the process control and measurement system. The measured characteristic can be provided to a diagnostic module that operates upon the measured characteristic to predict, or otherwise model, a condition of the process control and measurement system.
Claims19
A field device coupleable to a fieldbus process communication loop, the device comprising;
- a power module coupleable to the loop to power the device with energy received from the loop;
- a loop communicator coupleable to the loop, and adapted to bi-directionally communicate over the loop;
- a controller coupled to the loop communicator;
- diagnostic circuitry coupled to the controller and operably coupleable to the loop, the diagnostic circuitry adapted to measure a loop-related parameter including long term variation of DC voltage;
- and
- wherein the controller provides diagnostic information based upon the loop-related parameter.
A method of providing diagnostics on a fieldbus process communication loop, the method comprising:
- indirectly coupling diagnostic circuitry to the fieldbus process communication loop;
- measuring a parameter of the loop;
- and
- analyzing the parameter to provide a diagnostic output.
A field device coupleable to a fieldbus process communication loop, the device comprising;
- a power module coupleable to the loop to power the device with energy received from the loop;
- a loop communicator coupleable to the loop, and adapted to bi-directionally communicate over the loop;
- a controller coupled to the loop communicator;
- diagnostic circuitry coupled to the controller and operably coupleable to the loop, the diagnostic circuitry adapted to measure a loop-related parameter including long term variation of current drawn by the field device;
- and
- wherein the controller provides diagnostic information based upon the loop-related parameter.
A field device coupleable to a fieldbus process communication loop, the device comprising;
- a power module coupleable to the loop to power the device with energy received from the loop;
- a loop communicator coupleable to the loop, and adapted to bi-directionally communicate over the loop;
- a controller coupled to the loop communicator;
- diagnostic circuitry coupled to the controller and operably coupleable to the loop, the diagnostic circuitry adapted to measure a loop-related parameter including a lowest signal source on the loop and a device ID and address of the lowest signal source;
- and
- wherein the controller provides diagnostic information based upon the loop-related parameter.
A field device coupleable to a fieldbus process communication loop, the device comprising;
- a power module coupleable to the loop to power the device with energy received from the loop;
- a loop communicator coupleable to the loop, and adapted to bi-directionally communicate over the loop;
- a controller coupled to the loop communicator;
- diagnostic circuitry coupled to the controller and operably coupleable to the loop, the diagnostic circuitry adapted to measure a loop-related parameter including a quiescent noise level on the loop;
- and
- wherein the controller provides diagnostic information based upon the loop-related parameter.
A field device coupleable to a fieldbus process communication loop, the device comprising;
- a power module coupleable to the loop to power the device with energy received from the loop;
- a loop communicator coupleable to the loop, and adapted to bi-directionally communicate over the loop;
- a controller coupled to the loop communicator;
- diagnostic circuitry coupled to the controller and operably coupleable to the loop, the diagnostic circuitry adapted to measure a loop-related parameter;
- wherein the controller provides diagnostic information based upon the loop-related parameter;
- wherein the diagnostic information is indicated from the loop communicator to a computerized maintenance management system for work orders;
- and
- wherein the diagnostic information is selected to alert an operator to change control strategies.
Dependencies are inferred from the claim text.