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AssigneeMicro-Epsilon Messtechnik GmbH & Co. KG
InventorFelix Mednikov
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A noncontact distance measuring system with a sensor (2) that draws on alternating current and has a measuring coil (1), an electronic supply/evaluation circuit (3) connected with the sensor (2), and an electrically and/or magnetically conductive test object (4) associated to the sensor (2), the measuring coil being packaged in a preferably cylindrical housing, and the test object (4) at least partially surrounding the coil housing (5) and being movable in its longitudinal direction, is structured so as to reduce the overall length and to avoid the output impedance of the measuring coil from the position of the test object, in that the test object (4) is designed as a ring (6) surrounding the coil housing (5) at a distance, that the measuring coil (1) has at least two voltage taps (7), so that depending on the number of voltage taps (7) either voltage values can be tapped sequentially between the individual voltage taps (7) and a reference potential (8), and that the electronic supply/evaluation circuit (3) includes an electronic component (10) for adding up the tapped voltage values to a total voltage correlating with the position of the test object (4), or individual voltages between the voltage taps (7) can be tapped sequentially, and that the electronic supply/evaluation circuit (3) includes an electronic component (9) for adding up the tapped individual voltages to increasing voltage values and a further electronic component (10) for once again adding up the voltage values to a total voltage correlating with the position of the test object.
Noncontact distance measuring system comprising a sensor (2) which includes a measuring coil (1), an electronic supply/evaluation circuit (3), connected to the measuring coil and including means for supplying an alternating current to the coil, and an electrically and/or magnetically conductive test object (4) associated to the sensor (2), the measuring coil (1) being packaged in a coil housing (5), and the test object (4) surrounding the coil housing (5) at least in part and being movable in its longitudinal direction,
Noncontact distance measuring system comprising a sensor (2) which includes a measuring coil (1), an electronic supply/evaluation circuit (3) connected to the measuring coil and including means for supplying an alternating current to the coil, and an electrically and/or magnetically conductive test object (4) associated to the sensor (2), the measuring coil (1) being packaged in a coil housing (5), and the test object (4) surrounding the coil housing (5) at least in part and being movable in its longitudinal direction, characterized in that the test object (4) is constructed as a ring (6) surrounding the coil housing (5) at a distance therefrom, that the measuring coil (1) is provided with at least two voltage taps (7), so that individual voltages can be tapped, one after the other, between the adjacent voltage taps (7), and that the electronic supply/evaluation circuit (3) comprises an electronic component (9) for amplifying the summation of the tapped individual voltages to produce an increased voltage value, and a further electronic component (10) for processing the increased voltage value to produce a total voltage which is correlated with the position of the test object (4).
Dependencies are inferred from the claim text.