Patent ID: 7345471

Claim:
A device for detecting a position and velocity of a test object relative to a sensor, the sensor and the test object being arranged such that they can be displaced relative to one another, said device comprising: a sensor comprising a measuring coil with one or more voltage taps; a target that is placed on the test object while being electromagnetically coupled to the measuring coil and being connected to the test object, wherein the device simultaneously measures the position and the velocity, and wherein the target comprises two parts, one part made of an electrically conductive material and the other part provided as a magnet, and wherein the magnet is designed as a permanent magnet, due to which the one part brings about a change in the impedance of the sensor, said change being dependent on the position of the target relative to the sensor, and the magnet induces a voltage in the sensor, said voltage being dependent on the velocity of the target relative to the sensor, and that an electronic component for adding the voltages tapped on the sensor is assigned to the sensor, wherein an output signal of the component contains information about the position and velocity of the test object relative to the sensor, said information resulting from the two-part design of the target.