Anti-Pinch Mechanism for Power Window

Paper #:
  • 2016-28-0197

Published:
  • 2016-02-01
DOI:
  • 10.4271/2016-28-0197
Citation:
John, N., Sherki, M., and Patil, S., "Anti-Pinch Mechanism for Power Window," SAE Technical Paper 2016-28-0197, 2016, doi:10.4271/2016-28-0197.
Pages:
5
Abstract:
New generation automobiles are equipped with power windows which eases the passenger’s effort in moving the vehicle windows up and down. Many of them are stuffed with advanced features like automatic up/down option for ensuring functionality with a single press of the switch. Even though it adds comfort to driver & passenger, inadvertent use of power window can be fatal if a person’s body part gets trapped inside. An effective solution for this problem is anti-pinch mechanism, which releases the object safely just when it gets trapped. It detects the object trapped and immediately moves the window down so that trapped object will get released easily. The anti-pinch algorithm used in this project is based on the “Method of Monitoring Movable Element”, method monitor traveling distance of a power window pane. In order to achieve this different from conventional techniques we are using Ultrasonic sensor. The anti-pinch technology of power window has to meet standards issued by EU and United States. The maximum force a power window is allowed to exert on any object is 100N. Compliance with this limit must be monitored and enforced in a range of 4mm to 100mm from the top window frame, which is successfully meet by prototype designed. The goal of this project is to provide ultimate protection from power window injuries by implementing this simple & effective safety system to vehicles which are already running on road. Compactness & independent functionality ensures great compliance of this accessory with existing power windows.
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