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Water Avoidance Design Strategy for Capacitive Exterior Handles
Technical Paper
2019-36-0187
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Nowadays, capacitive handles are increasing their use in high-end commercial vehicles. This particular handle applies a technology that permits to unlock and even lock the vehicle without a key. As benefit for current life, the customer has the possibility to access and close the vehicles more efficiently and faster, just possessing the key in the pocket or any close compartment that the user is carrying, for example, bag, purse, backpack. Even though, the design of capacitive exterior handle must follow several design strategies to avoid nonfunctional in rainy climate. Water could work as a blocker for the sensor signal captured, special design strategies that must be taken in order to minimize that the liquid could ingress the handle and even be retained on the region that sensor is located. On this two-piece handle not only the parting line location, drain holes and a favorable drainage for liquids inside the handle must be designed, but also a control on the painting capacitance is hugely important for a successful project. Overall, to validate physically the design, test are required for the antenna and handle in component level. Besides, vehicle tests in abusive condition to reproduce heavy rain environment are highly recommended. The result after following design steps carefully is to launch a reliable product even in not favorable weather conditions.
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Citation
Demori, D., Magalhães, J., Ferreira, A., Camargo, F. et al., "Water Avoidance Design Strategy for Capacitive Exterior Handles," SAE Technical Paper 2019-36-0187, 2020, https://doi.org/10.4271/2019-36-0187.Also In
References
- Rydahl , D. Keyless Entry and Capacitive Sensing Door Handle ATZelektronik Worldwide 2017 10.1007/s38314-016-0102-y
- Pell , B. , Sulic , E. , Rowe , et al. Experimental Study of The Effect of Modern Automotive Paints on Vehicular Antennas IEEE Transactions on Antennas and Propagation 59 2 2011 10.1109/TAP.2010. 2096182.
- Ide , N. , Hioki , J. , and Okada , H. Application of Electromagnetic Simulation to Electronic Key System Development SAE Technical Paper 2016 10.4271/2016-01-1363
- Schmitz , S. , and Roser , C. A New State-of-the-Art Keyless Entry System SAE Technical Paper 1998 10.4271/980381
- Niimi , N. , Yoshida , T. , and Isogai , T. Capacitive Humidity Sensors Using Highly Durable Polyimide Membrane SAE Technical Paper 2013 10.4271/2013-01-1337
- Kirby , E. Capacitive Sensing in an Automotive Environment SAE Technical Paper 2008 10.4271/2008-01-0267
- Scobbo , J. , Grimes , D. , Lemmen , T. , and Umamaheswaran , V. Conductive Thermoplastic Resin for Electrostatically Painted Applications SAE Technical Paper 1998 10.4271/980983
- Das , D. , Elfrgani , A. Antenna Design Methodology for Remote Keyless Entry: The Effects of The Human Body and Vehicular Antenna Position on Coverage SAE Technical Paper 2019 10.4271/2019-01-1058