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US 9,850,697 B2Granted
Safety power window system and operation method thereof
AssigneeKorea Electrical Power Corporation
InventorsYoung Suk Kim, Jung Min Lim, So Dam Jeong, Kyeong Won Jeon, Seung Ju Ham
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Abstract
The present disclosure relates to a safety power window system capable of detecting jamming of an object between a window and a door frame by generating virtual pulse signals on the basis of pulse signals generated by two hall sensors positioned to have an interval of 90 degrees therebetween to calculate force acting on the window even though a window motor rotates only 0.75 turns, and an operation method thereof.
Claims16
A safety power window system comprising:
- a first hall sensor positioned at a rotation start point of a window motor and configured to generate a first pulse signal depending on rotation of the window motor;
- a second hall sensor configured to generate a second pulse signal depending on the rotation of the window motor;
- and
- a controller configured to generate a first virtual pulse signal and a second virtual pulse signal on the basis of the first pulse signal and the second pulse signal at the time of a rise of a window, calculate force acting on the window on the basis of the first and second pulse signals and the first and second virtual pulse signals, and determine that an object is jammed between the window and a door frame in the case in which the calculated force exceeds a threshold value.
1 more element
An operation method of a safety power window system, comprising:
- generating a first pulse signal depending on rotation of a window motor, by a first hall sensor positioned at a rotation start point of the window motor;
- generating a second pulse signal depending on the rotation of the window motor, by a second hall sensor positioned to be spaced apart from the first hall sensor, an angle between a line connecting a rotation axis of the window motor and the first hall sensor and a line connecting the rotation axis of the window motor and the second hall sensor being 90 degrees;
- generating a first virtual pulse signal and a second virtual pulse signal on the basis of the first pulse signal and the second pulse signal at the time of a rise of a window, by a controller;
- calculating an acceleration of the window motor using the first and second pulse signals and the first and second virtual pulse signals;
- calculating force acting on the window on the basis of the acceleration;
- and
- determining that an object is jammed between the window and a door frame in the case in which the calculated force exceeds a threshold value.
4 more elements
Dependencies are inferred from the claim text.