Capacitive anti finger trap proximity sensor
First Claim
1. A trapping protector capable of detecting the presence of an object in a sensing region when connected with a device for creating input signals and evaluating output signals, comprising:
- a body portion of a non conducting material, at least one ground electrode, at least one sensor electrode arranged spaced apart from said ground electrode and embedded in said body portion, said ground and sensor electrodes providing a capacitor means for sensing the presence of an object of a dielectric material in said sensing region, and said body portion of a non conductive material being provided with a zone of reduced rigidity between said at least one ground electrode and said at least one sensor electrode.
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Abstract
The present invention relates to a trapping protector capable of detecting the presence of an object in a sensing region when connected with a device for creating input signals and evaluating output signals. Said trapping protector comprises a body portion, at least one ground electrode, at least one sensor electrode arranged spaced apart from said ground electrode and embedded in said body portion, and a zone of reduced rigidity between said at least one ground electrode and said at least one sensor electrode. Said zone reduces the force required for triggering said trapping protector.
105 Citations
23 Claims
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1. A trapping protector capable of detecting the presence of an object in a sensing region when connected with a device for creating input signals and evaluating output signals, comprising:
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a body portion of a non conducting material, at least one ground electrode, at least one sensor electrode arranged spaced apart from said ground electrode and embedded in said body portion, said ground and sensor electrodes providing a capacitor means for sensing the presence of an object of a dielectric material in said sensing region, and said body portion of a non conductive material being provided with a zone of reduced rigidity between said at least one ground electrode and said at least one sensor electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for controlling a power-driven window, including a capacitive trapping protector capable of detecting the presence of an object in a sensing region comprising:
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at least one body portion of a non conducting material;
at least one ground electrode;
at least one sensor electrode arranged spaced apart from said ground electrode and embedded in said body portion wherein said ground and sensor electrodes providing capacitor means for sensing the presence of an object in said sensing region;
said body portion having a zone of reduced rigidity located between said at least one ground electrode and said at least one sensor electrode; and
a device for creating input signals to be applied to said sensor electrode and for receiving output signals from said sensor electrode, wherein said output signals change depending upon the presence of a dielectric object in said sensing region and upon a change in the mutual position of said sensor electrode and said ground electrode, said device initiating a switching process of a drive unit depending on a change in said output signals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification