Class / Patent application number | Description | Number of patent applications / Date published |
324243000 | Plural sensors | 10 |
20110037462 | Multiple Receiver Coil Dual Mode Electromagnetic Detector - An electromagnetic detection system comprising: a transmitter loop for generating a primary magnetic field, and spaced apart receiver coils for measuring a secondary magnetic field generated in response to the primary magnetic field. | 02-17-2011 |
20110163742 | Magnetic Field Characterization of Stresses and Properties in Materials - Described are methods for monitoring of stresses and other material properties. These methods use measurements of effective electrical properties, such as magnetic permeability and electrical conductivity, to infer the state of the test material, such as the stress, temperature, or overload condition. The sensors, which can be single element sensors or sensor arrays, can be used to periodically inspect selected locations, mounted to the test material, or scanned over the test material to generate two-dimensional images of the material properties. Magnetic field or eddy current based inductive and giant magnetoresistive sensors may be used on magnetizable and/or conducting materials, while capacitive sensors can be used for dielectric materials. Methods are also described for the use of state-sensitive layers to determine the state of materials of interest. These methods allow the weight of articles, such as aircraft, to be determined. | 07-07-2011 |
20110215799 | MAGNETIC INSPECTION SYSTEMS FOR INSPECTION OF TARGET OBJECTS - Inspection systems provided herein may include a drive coil capable of being excited to generate a substantially uniform magnetic field about an object. The object includes a ferromagnetic adhesive adhered thereto. The inspection systems may also include an array of sensor coils adapted to detect the magnetic field from the drive coil after the magnetic field interacts with the ferromagnetic adhesive and to produce a voltage output corresponding to the detected magnetic field. | 09-08-2011 |
20130082695 | CLOSED CORE CURRENT PROBE - A current probe enabling measurement of current of a signal in a circuit includes a ferrite core defining a gap, a wire wrapped around the ferrite core and a magnetic field sensor. The wire is configured to receive the signal from the circuit, where the current of the signal flowing in the wire generates a magnetic field in the ferrite core. The magnetic field sensor is positioned in the gap of the ferrite core, the magnetic field generated in the ferrite core flowing through the magnetic field sensor, which produces a voltage proportional to an intensity of the magnetic field. The current is measured based on the voltage produced by the magnetic field sensor. | 04-04-2013 |
20130181702 | Active mechanical force and axial load sensor - A force measurement sensor for measuring an applied force onto an object is provided. The force measurement sensor includes a first sensing unit which comprises a first flux concentrator having a first facing orientation pointing towards a surface of the object, a first magnetic field generating unit being adapted for generating a magnetic field, a first magnetic field detector unit being adapted for detecting a first magnetic field which field being generated by the first magnetic field generating unit and being influenced by the applied force to be measured, wherein the first magnetic field detector unit is further adapted for outputting a first signal being representative for the detected magnetic field, and an evaluating unit being adapted for evaluating a signal strength of the first signal and determining the applied force based on the first signal. A longitudinal axis of the first magnetic field detector unit is arranged such that a first lateral offset between the longitudinal axis of the first magnetic field detector unit and a central axis of the first flux concentrator is provided. The first lateral offset is perpendicular to a longitudinal direction of the first flux concentrator. | 07-18-2013 |
20130271123 | SYSTEM AND METHOD FOR PROVIDING ELECTROMAGNETIC IMAGING THROUGH MAGNETOQUASISTATIC SENSING - A system for providing electromagnetic imaging through magnetoquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of inductive loops that source magnetic fields that interact with the sample, wherein the inductive loops are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the inductive loops are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion. | 10-17-2013 |
20140266174 | Magnetic Detector - A probe for detecting magnetic particles. In one embodiment, the probe includes: a cylindrical probe core having a first end and a second end, the cylindrical probe core defining two channels for containing coils of wire, one of the channels being adjacent the first end of the cylindrical probe core; two sense coils, one each of the sense coils being located in a respective one of the channels; and two drive coils, one each of the drive coils being co-located with the respective sense coil in a respective one of the channels. | 09-18-2014 |
20140266175 | Magnetic Detector - A probe and method for detecting magnetic particles. In one embodiment, the probe includes a probe core having a first end and a second end, the probe core defining two regions for containing coils of wire, one of the regions being adjacent the first end of the cylindrical probe core; two sense coils, one each of the sense coils being located in a respective one of the regions; and two drive coils, one each of the drive coils being located in a respective one of the regions, wherein the regions are separated by a distance equal to or greater than the diameter of one of the coils and a source of a secondary magnetic drive field. In another embodiment, the frequency of the drive signal of the secondary magnetic drive field is less than the frequency of the drive signal of the primary drive coils. | 09-18-2014 |
20150293253 | APPARATUS FOR CHECKING FOR A PRESENCE OF AN ELECTRICALLY CONDUCTIVE BODY, AND CHARGING SYSTEM - An apparatus for checking for a presence of an electrically conductive body has at least one transmitting device and at least one receiving device. The transmitting device provides a transmission signal in the form of a magnetic field. The receiving device generates a reception signal from the transmission signal that is induced into the receiving device. The transmitting and receiving devices are configured in such a way that, when the electrically conductive body is absent, partial reception signals form in the receiving device on account of the induced transmission signal and the partial reception signals substantially cancel one another out in the reception signal. | 10-15-2015 |
20150309204 | MAGNETIC SENSOR DEVICE - A magnetic sensor device may include an exciting coil; a detection coil which faces the exciting coil and is structured to detect an AC magnetic field generated by the exciting coil; an object arrangement space which is provided between the detection coil and the exciting coil; and a case member which covers an entire surrounding area for the detection coil and the exciting coil except a side facing the exciting coil in a surrounding area for the detection coil and except a side facing the detection coil in a surrounding area for the exciting coil. The case member may be made of nonmagnetic conductive metal. | 10-29-2015 |