| 摘要 |
An apparatus and method for detecting an increase in thickness of a strip of material from a desired thickness. The apparatus may comprise a light source, a light detector, an indicator, a first fiber optic cable coupled with the light source, a second fiber optic cable coupled with the light detector, and a housing. The housing may comprise a material slot for passing the strip of material therethrough and fixing optical fibers of the first fiber optic cables to reflect light off of a first and second face of the strip of material into optical fibers of the second fiber optic cable. The amount of light detected by the light detector depends on the proximity of each of the faces of the strip of material to ends of the optical fibers. The thicker the strip of material, the less light received by the light detector, which may actuate the indicator.
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