CPC G01J 1/0228 (2013.01) [A61F 9/00736 (2013.01); G01J 2001/083 (2013.01); G01N 21/15 (2013.01); G01N 21/94 (2013.01); G01N 2021/157 (2013.01); G01N 2021/945 (2013.01); G01N 2201/062 (2013.01)] | 7 Claims |
1. A method for determining a characteristic of an optical pathway corresponding to a fluid pathway of a medical device, comprising:
increasing, over a time period that starts at a first time, a current input to a light emitting element (LEE);
receiving, by a light detection element, an output of the LEE via the optical pathway during the time period;
converting, during the time period, the output of the LEE to a voltage output;
determining a second time in the time period when the voltage output crosses a threshold; and
determining the characteristic of the optical pathway between the LEE and the light detection element based on a difference between the second time and the first time.
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