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1. (WO2015047587) PROCESS DEVICE WITH PROCESS VARIABLE MEASUREMENT USING IMAGE CAPTURE DEVICE

Pub. No.:    WO/2015/047587    International Application No.:    PCT/US2014/051432
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Aug 19 01:59:59 CEST 2014
IPC: G05D 1/00
G06T 7/20
G06T 1/00
Applicants: ROSEMOUNT INC.
Inventors: HEDTKE, Robert, C.
Title: PROCESS DEVICE WITH PROCESS VARIABLE MEASUREMENT USING IMAGE CAPTURE DEVICE
Abstract:
A field device (12) for monitoring a process variable of an industrial process includes an image capture device (100). A process component (106) exhibits relative motion as a function of a process variable. The image captures device (100) captures an image which changes due to the relative motion of the process component (106). An image processor (102) coupled to the image capture device (100) detects relative motion of the process component (106) and measures the process variable based upon the detected relative motion. Output circuitry (30) provides an output related to the measured process variable.