Motor vehicle closing device with a position recognition system for a moveable control element
First Claim
1. Motor vehicle closing device comprising a moving positioning element and which has a position which is to be ascertained, a position detection means for detection of the positioning element without contact, and a plurality of passive position elements arranged in series on the positioning element;
- where the position elements are spaced apart from one another;
where the position detection means produces counting signals in response to passage of the position elements by the position detection means and has means for preventing shifting of an operating point of the closing device by periodically setting the operating point to a zero point to achieve zeroing in the form of offset balancing.
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Accused Products
Abstract
The subject matter of the invention is a motor vehicle closing device with a positioning element (3) which turns around one axis of rotation (7) or which moves linearly along one lengthwise axis and which has a position which is to be ascertained, and with a position detection means (8) which works without contact and which is located on the path of motion of the positioning element (3) (or on the positioning element 3 itself). It thus lends itself to “diagnosis” by the fact that on the positioning element (3) (or on the path of movement of the positioning element 3) in the direction of its motion there are several passive position detection elements (9) in succession and that position detection takes place by counting the signals of the position detection elements (9) by the position detection means (8). In particular it is provided that the position detection means (8) has a sensor which is sensitive to magnetic fields, especially a Hall sensor, a reed contact or a magnetoresistive sensor and the position detection elements (9) are made as alternatingly magnetic and nomnagnetic pole zones or pole zones which are magnetized with changing polarity.
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Citations
18 Claims
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1. Motor vehicle closing device comprising a moving positioning element and which has a position which is to be ascertained, a position detection means for detection of the positioning element without contact, and a plurality of passive position elements arranged in series on the positioning element;
- where the position elements are spaced apart from one another;
where the position detection means produces counting signals in response to passage of the position elements by the position detection means and has means for preventing shifting of an operating point of the closing device by periodically setting the operating point to a zero point to achieve zeroing in the form of offset balancing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- where the position elements are spaced apart from one another;
Specification