Class / Patent application number | Description | Number of patent applications / Date published |
324207260 | Approach or retreat | 10 |
20090001972 | CALIBRATION CIRCUITS AND METHODS FOR PROXIMITY DETECTOR - A proximity detector employs a first peak detector circuit and a second peak detector circuit, both responsive to a magnetic field signal. The second peak detector circuit includes a positive peak detector circuit and a negative peak detector circuit, each of which have a predetermined excursion limit in an outward direction away from a center voltage of the magnetic field signal so as to be less affected by a large signature region in the magnetic field signal. The proximity detector also includes an output control circuit. The output control circuit is configured to provide an output signal, which, during a determined time period, changes state in response to the first peak detector circuit, and which, after the determined time period, changes state in response to the second peak detector circuit. | 01-01-2009 |
20090015248 | POSITION FEEDBACK FOR SELF BEARING MOTOR - A sensing mechanism includes a magnetic source, a magnetic flux sensor, a sensor backing on which the magnetic source and flux sensor are mounted, and a ferromagnetic target, where the magnetic source, magnetic flux sensor, and ferromagnetic target are positioned to form a magnetic circuit from the magnetic source to the target, from the target to the sensor, and returning to the magnetic source through the sensor backing. | 01-15-2009 |
20090021248 | INDUCTIVE PROXIMITY DETECTOR WITH SWITCHED WINDINGS - The invention relates to an inductive proximity detector comprising an oscillating circuit ( | 01-22-2009 |
20090051355 | Proximity sensor and proximity detection method - A proximity sensor for detecting proximity of a metal, wherein a driving signal is output to a resonant circuit that includes a capacitor connected to a detecting coil, and the proximity of the metal is detected based on a phase shift of freely oscillating waves that are attenuatedly output from the resonant circuit after an output of the driving signal is stopped, the proximity sensor includes a controller that outputs the driving signal to the resonant circuit; and measures a phase shift of oscillating waves that is involved in the proximity of the metal based on the freely oscillating waves that are attenuatedly output from the resonant circuit after the output of the driving signal is stopped. | 02-26-2009 |
20090051356 | PROXIMITY SENSOR - In a proximity sensor | 02-26-2009 |
20090072820 | Method and system for determining the distance between a profiled surface from a functional surface moving in relation thereto by using two exploring coils - A method and a system are disclosed for determining the distance between a conducting surface which is profiled in the direction of distance determination and a functional surface moving in relation to the surface by using a measuring system. Two exploring coils are applied to an oscillator system and are connected on the output end to an analog-to-digital converter via a demodulator, the analog-to-digital converter being connected to an arithmetic module. In at least one embodiment of the invention, a method and a system are provided which allow to effect a distance measurement substantially uninfluenced by the profile of the conducting surface and by variations in ambient temperature. For this purpose, a sensor is used whose second exploring coil is mounted on the first exploring coil facing away from the surface at a defined, known distance. An arithmetic module calculates the distance of the functional surface from the profiled surface using the digital measured values to the two exploring coils and a digital reference value and the fixed distance. | 03-19-2009 |
20090085560 | APPARATUS AND METHODS FOR AN INDUCTIVE PROXIMITY SENSOR - An inductive proximity sensor is disclosed. The proximity sensor includes a housing having at least a first pair of inductive coils disposed within the housing. One of the first pair of inductive coils is opposite in polarity from another one of the first pair of inductive coils. The sensor optionally includes a second set of inductive coils, having opposite polarity. | 04-02-2009 |
20090243601 | Inductive Proximity Switch - Embodiments of the invention relate to a proximity switch device, a system, and methods for operating and manufacturing a proximity switch device. According to an aspect, an inductive proximity switch device includes a plurality of inductive elements. | 10-01-2009 |
20100026283 | Position detecting device, and seat position detecting device of vehicle - In a position detecting device including a movable member provided in a displaceable manner on a base member, and a proximity sensor which detects the position of the movable member, the proximity sensor includes a magnetic field generating portion, a detecting portion which detects a change in magnetic field according to the displacement of the movable member, and a protruding portion made of a nonmagnetic material, which protrudes toward an object to be detected. A seat position detecting device of a vehicle including the configuration of the position detecting device mentioned above is provided. The base member is comprised of a lower rail which is fixedly installed on a floor of a vehicle body, and the movable member is comprised of an upper rail which is attached to a seat for a vehicle and slidably engaged with the lower rail and which is allowed to be fixed in arbitrary sliding positions on the lower rail. | 02-04-2010 |
20150369584 | SENSOR - A sensor assembly for indicating the location of a leadscrew relative to a probe tube, the leadscrew forming part of a nuclear control rod and the probe tube being moveably connected to the leadscrew. The sensor assembly including a primary electromagnetic coil arranged to generate a time varying magnetic field; and a secondary electromagnetic coil arranged to detect the time varying magnetic field as affected, directly or indirectly, by the leadscrew moving relative to the probe tube and to output, on the basis of the detected time varying magnetic field, a signal indicative of the location of the leadscrew relative to the probe tube. The primary electromagnetic coil and the secondary electromagnetic coil comprising copper and nickel. | 12-24-2015 |