Lubricant deterioration sensor and optical sensor
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United States of America Patent
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Jun 12, 2018
Issued Date -
Sep 1, 2016
app pub date -
Oct 27, 2014
filing date -
Oct 25, 2013
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Abstract
One object is to provide a lubricant deterioration sensor that can maintain accuracy of sensing the deterioration of a lubricant having low transmissivity and an optical sensor used therein for sensing the amount of received light. The lubricant deterioration sensor is used for determining deterioration state of a lubricant. The lubricant deterioration sensor includes an optical sensor having: an LED for emitting detection light; an oil entering gap in which the detection light passes through a lubricant to be inspected; a color sensor for sensing color information of the detection light having passed through the lubricant; and a logarithmic amplifier for logarithmically amplifying the detection value sensed by the color sensor and outputting the amplified detection value.
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