Invention Grant
- Patent Title: Optical product detection sensor
- Patent Title (中): 光学产品检测传感器
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Application No.: US12428738Application Date: 2009-04-23
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Publication No.: US07924424B2Publication Date: 2011-04-12
- Inventor: Joseph Erickson , Eugene Tokhtuev , Christopher Owen
- Applicant: Joseph Erickson , Eugene Tokhtuev , Christopher Owen
- Applicant Address: US MN Saint Paul
- Assignee: Ecolab USA Inc.
- Current Assignee: Ecolab USA Inc.
- Current Assignee Address: US MN Saint Paul
- Agency: Fredrikson & Byron, PA
- Main IPC: G01N21/00
- IPC: G01N21/00

Abstract:
An optical detection sensor detects presence or absence of a product within a fluid delivery medium. An emitter directs radiation into the fluid delivery medium and detectors detect transmitted light at a plurality of wavelengths. The output of each detector and combinations of outputs of multiple detectors are associated with at least one out-of-product threshold. In addition, a color ratio is established. A controller compares the detector outputs and combination outputs with the associated out-of-product threshold(s). If any of the thresholds are satisfied, the controller compares the color ratio with an associated out-of-product threshold to verify an out-of-product event has occurred and reduce errors due to batch-to-batch variation of the product. The sensor is able to determine presence or absence of a variety of products having different color, transparency or turbidity.
Public/Granted literature
- US20090262351A1 OPTICAL PRODUCT DETECTION SENSOR Public/Granted day:2009-10-22
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