A Fiber Optic Liquid Level Sensor |
Contents
MEASUREMENT OF LIQUID LEVEL | 30 |
DIGITAL SENSOR PROTOTYPE | 39 |
33 | 61 |
Copyright | |
2 other sections not shown
Common terms and phrases
Air Liquid binary pattern CALL MOVETO capacitance level sensor centimeter Chapter Circuit diagram cladding computer model connector contrast ratio coupled waveguides coupling efficiency coupling length coupling level coupling peak coupling signal critical angle decoding detector digital level sensor electronics fiber optic liquid fiber optic sensors Fresnel function of liquid Gray code index of refraction INPUT level of coupling liquid characteristics Liquid Level cm liquid level information liquid level sensor liquid surface liquid tank liquid-coupled waveguides mask opening micron Microsoft BASIC millimeter nanowatts numerical aperture optic liquid level optical coupling optical fibers optical power coupled optical waveguides OTDR PRINT#2,USING prototype digital prototype sensor ray optics receiving fibers receiving guide receiving waveguide reference fiber reference level reflecting array Relative Coupling resolution sensor head shown in Figure signal fibers single reflector slab waveguide Snell's law source guide source waveguide thesis threshold detection total internal reflection voltage waveguide coupling wavelength ΚΩ