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Flow Sensor for Field Measurement of Viscous Liquid Usage for Consumer Studies

Hatzfeld, Christian ; Schröder, Christian ; Unger, Alexander ; Morar, Olivia ; Klemm, Torsten ; Kupnik, Mario ; Werthschützky, Roland (2015):
Flow Sensor for Field Measurement of Viscous Liquid Usage for Consumer Studies.
IEEE Sensors Conference, Busan, Korea, Nov 1-4, 2015, [Conference or Workshop Item]

Abstract

The usage of household liquids such as detergent or shampoo is a relevant parameter in customer research. It has to be measured in a real environment to eliminate effects of staged studies. We present a 3D-printed sensor usable for both flow and derived mass measurements for such high viscous liquids. It can handle pulsating flows and has negligible influence on the user. The sensor is a variable-area sensor with a spring-loaded float to ensure operation in all positions. Displacement is measured by a hall sensor and magnet inside the float. Because of the temperature dependence of the liquid’s viscosity, a temperature sensor and a look-up-table are employed to derive mass measures from displacement measures. System size is Ø20mm x 120 mm; it fits in a commercially available detergent bottle. Readout is realized by an IrDA-interface, a LiPo battery ensures six month operation. The sensor exhibits an overall accuracy of -0.358% and a lower precision of 10.09% for a nominal range of 1 to 6 g of fluid.

Item Type: Conference or Workshop Item
Erschienen: 2015
Creators: Hatzfeld, Christian ; Schröder, Christian ; Unger, Alexander ; Morar, Olivia ; Klemm, Torsten ; Kupnik, Mario ; Werthschützky, Roland
Title: Flow Sensor for Field Measurement of Viscous Liquid Usage for Consumer Studies
Language: German
Abstract:

The usage of household liquids such as detergent or shampoo is a relevant parameter in customer research. It has to be measured in a real environment to eliminate effects of staged studies. We present a 3D-printed sensor usable for both flow and derived mass measurements for such high viscous liquids. It can handle pulsating flows and has negligible influence on the user. The sensor is a variable-area sensor with a spring-loaded float to ensure operation in all positions. Displacement is measured by a hall sensor and magnet inside the float. Because of the temperature dependence of the liquid’s viscosity, a temperature sensor and a look-up-table are employed to derive mass measures from displacement measures. System size is Ø20mm x 120 mm; it fits in a commercially available detergent bottle. Readout is realized by an IrDA-interface, a LiPo battery ensures six month operation. The sensor exhibits an overall accuracy of -0.358% and a lower precision of 10.09% for a nominal range of 1 to 6 g of fluid.

Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design (dissolved 18.12.2018)
Event Title: IEEE Sensors Conference
Event Location: Busan, Korea
Event Dates: Nov 1-4, 2015
Date Deposited: 10 Feb 2016 10:47
URL / URN: http://dx.doi.org/10.1109/ICSENS.2015.7370343
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