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Remaining life prediction for field device electronics board base on microprocessor

An electronic circuit, life-span technology, used in electronic circuit testing, electrical testing/monitoring, instruments, etc., to solve problems such as errors and transmitter failures

Inactive Publication Date: 2004-04-28
ROSEMOUNT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This microprocessor-based transmitter contains complex electronic circuits that sometimes make errors when in reality only leakage or shunt current occurs
For example, a circuit leakage current affecting the loop current may be reported as a transmitter fault

Method used

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  • Remaining life prediction for field device electronics board base on microprocessor
  • Remaining life prediction for field device electronics board base on microprocessor
  • Remaining life prediction for field device electronics board base on microprocessor

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Embodiment Construction

[0011] A process variable is usually the primary variable being controlled in a process. As used herein, a process variable means any variable such as pressure, flow, temperature, value, level, pH, turbidity, vibration, position, motor current, or any other characteristic of the process that describes the condition of the process. A control signal means any signal (other than a process variable) used to control a process. For example, control signals include desired process variable values ​​(ie, setpoints) to be adjusted by the controller, such as desired temperature, pressure, flow, level, pH, or turbidity, among others. In addition, control signals include correction values, alarms, alarm conditions, signals to control elements such as valve actuators, valve position signals for heating elements, solenoid switch signals, etc., or any other signal related to the control of the process . As used herein, diagnostic signals include information related to the operation of devi...

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PUM

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Abstract

A field device (8), includes circuitry to successively measure a parameter related to current drawn by electronics of the field device. The measurements are provided to a prediction engine which calculates a diagnostic output based upon the plurality of current-related measurements. The diagnostic prediction provided by the prediction engine can provide an estimate of viable life remaining for the device electronics. The diagnostic feature provides on-line status of the overall status of the field transmitter.

Description

technical field [0001] The present invention relates to operations in the process control industry. In particular, the present invention relates to electronic circuit board life prediction for microprocessor-based field devices based on repeated measurements of the current drawn by the electronic circuit board. Background technique [0002] Efficient manipulation of process variables in a controlled process requires rapid determination of faults in components of field devices or in communication circuits so that appropriate corrective actions or appropriate warnings can be performed. Determining a fault or error provides inherent efficiency before stopping the process and removing the field device from the process loop. This microprocessor-based transmitter contains complex electronic circuits that sometimes make errors when in reality only leakage or shunt current occurs. For example, circuit leakage currents that affect loop currents may be reported as transmitter faults...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/02G01R31/28G05B23/02
CPCG01R31/2829
Inventor 格雷戈里·H·罗梅埃夫伦·埃尔于雷克卡迪尔·卡瓦列奥格鲁
Owner ROSEMOUNT INC