DEVICE AND METHOD FOR EVALUATING A USEFUL SIGNAL ORIGINATING FROM A PROXIMITY SENSOR
The invention relates to a device and method for evaluating a useful signal U(t) originating from a proximity sensor. The device comprises a first recognition means ( 17 ) which changes the switching state thereof when the value (U1(t)) of a first signal produced from the useful signal exceeds a fir...
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Main Author | |
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Format | Patent |
Language | English French German |
Published |
25.05.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a device and method for evaluating a useful signal U(t) originating from a proximity sensor. The device comprises a first recognition means ( 17 ) which changes the switching state thereof when the value (U1(t)) of a first signal produced from the useful signal exceeds a first limit value that characterizes the proximity of an object. In addition, a second recognition means ( 34 ) is provided which changes the switching state thereof from a first to a second state when the value (U(t)) of the useful signal exceeds a second limit value that characterizes the removal of an object. A decision means ( 32 ), which is connected to the first recognition means ( 17 ) and to the second recognition means ( 34 ), changes its switching state when the first recognition means ( 17 ) changes the switching state thereof from its first to a second switching state, and the second recognition means does not change the switching state thereof during a predetermined first time span (Deltat1) after the switching state of the first recognition means is changed. |
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Bibliography: | Application Number: EP20010901151 |