158 results about "Field line" patented technology

Tumors in portions of a subject's body that have a longitudinal axis (e.g., the torso, head, and arm) can be treated with TTFields by affixing first and second sets of electrodes at respective positions that are longitudinally prior to and subsequent to a target region. An AC voltage with a frequency of 100-500 kHz is applied between these sets of electrodes. This imposes an AC electric field with field lines that run through the target region longitudinally. The field strength is at least 1 V/cm in at least a portion of the target region. In some embodiments, this approach is combined with the application of AC electric fields through the target region in a lateral direction (e.g., front to back and/or side to side) in order to apply AC electric fields with different orientations to the target region.

A system and apparatus for a magnetized plasma nuclear fusion reactor, incorporating special design features which induce a plasma heat engine cycle in a rapidly rotating plasma. The heat engine operates either continuously or by oscillations. A continuous heat engine is formed in the open field outside a field reversed configuration. The oscillatory system operates in synchronism with cyclic acceleration, collision, and deceleration of plasma masses to produce nuclear fusion reactions at an economically useful rate with a relatively small driving power required. A special magnetic field design is combined with applied electrical voltages at the end of the field lines to produce required conditions. Design features allow recovery of large fraction of collision heat which would otherwise be dissipated as a parasitic loss.

The invention discloses a glass surface defect enhancement detection device which comprises a bright field illumination light path, a dark field illumination light path, a scanning imaging lens and a linear array image sensor. Glass to be detected is conveyed to a movement platform through a feeding conveying belt, a bright field line source, the scanning imaging lens and the linear array image sensor are opened in sequence for bright field imaging; then the bright field line source is closed, a laser emits laser light, the laser light is converted into a line source through a Powell prism and a collimator, and dark field imaging is carried out by the scanning imaging lens and the linear array image sensor; statistic analysis is carried out on surface defect information of the glass by an intelligent system according to data obtained after bright field imaging and dark field imaging and the results are summarized and then output; through judgment on severity of defects, the effect of detecting out unqualified products is improved and the product quality is improved.

A method for writing a magnetic random access memory-based ternary content addressable memory cell comprising a first magnetic tunnel junction being formed from a storage layer, a sense layer having a magnetization direction adjustable relative to the magnetization of the storage layer, and an insulating layer between the storage and sense layers; a sense line coupled with the storage layer; a first field line and a second field line, and the first field line being orthogonal to the second field line; comprising: providing a first write data to said storage layer via the second field line to store a first stored data with a high or low logic state; characterized in that, the method further comprises providing the first write data to said storage layer via the first field line to store the first stored data with a masked logic state.

A magnetic sensor has a magnet (30) and a magneto-resistive element (20), arranged on a substrate such that magnetic field lines through the magneto-resistive element are substantially parallel to a plane of the substrate. Movement of a movable magnetically permeable element (40) near the substrate is detected as it alters the number of field lines through the element. The sensor can be more sensitive than devices arranged with perpendicular field lines, and can be easier to manufacture and integrate. Applications include analog pointers, pressure sensors and microphones. The sensor can use magnets placed either side of the element to detect changes in size of a gap above the element. As the gap closes, less of the parallel oriented field passes through the magneto resistive element.

A sensor system and an evaluation method for monitoring surroundings on a mechanical component, having at least one capacitive sensor element that is attachable on the surface of machines or machine parts, in which at least one sensor element is made up of a layered structure of flexible, electrically conductive and electrically insulating layers, electrically conductive surfaces of one layer being positioned with lateral spacing above insulating layers lying between them in such a way that electrical field lines form between the conductive surfaces, which change measurably upon approach to and/or contact with a body or object.

A method for fabricating a self-aligned gated carbon nanotube field emitter structure includes providing a substrate, depositing a dielectric material on the surface of the substrate and depositing a conductor layer on the surface of the dielectric material. The method also includes selectively etching the conductor layer to form an opening and selectively etching the dielectric material to form a micro-cavity. The method further includes depositing a base layer structure in the micro-cavity adjacent to the surface of the substrate, wherein the base layer structure has a substantially conical shape, and depositing a catalyst on a portion of the surface of the base layer structure, wherein the catalyst is suitable for growing at least one carbon nanotube. The method still further includes applying an electrical potential to the substrate and the conductor layer, wherein the electrical potential generates a plurality of electrical field lines that are deflected around the surface of the base layer structure, and wherein the plurality of electrical field lines have a strength that is greatest in a direction substantially perpendicular to the surface of the substrate. Finally, the method includes growing at least one carbon nanotube from the catalyst in the presence of the plurality of electrical field lines, wherein the at least one carbon nanotube is grown in a direction substantially perpendicular to the surface of the substrate.

A shared memory video processor including signal processing circuitry. The signal processing circuitry may enable a noise reducer and a de-interlacer to share access to field buffers in a memory device to store various field lines. Some of the stored field lines may also be shared within the signal processing circuitry. The sharing of some stored field lines reduces overall memory bandwidth and capacity requirements. The signal processing circuitry may be capable of performing multiple field line processing. A set of field line buffers may be provided to store field lines for multiple field segments and may provide the data to the corresponding inputs of the signal processing circuitry. To further reduce storage, some of the field line buffers may also be shared among the signal processing circuitry.

A device for measuring current comprises a magnetic field sensor (2) for measuring the magnetic field produced by a current I flowing through a current conductor (1) and a yoke (3) of a magnetic material with a relative permeability of at least 100. The magnetic field sensor (2) preferably comprises a semiconductor chip with at least one Hall element and an electronic circuit for the operation of the Hall element. Two magnetic field concentrators (7, 8) separated by an air gap (6) are arranged on a surface of the semiconductor chip such that field lines (9) of the magnetic field (see FIG. 3) that issue from the first magnetic field concentrator (7) in the vicinity of the air gap (6) and impinge on the second magnetic field concentrator (8) in the vicinity of the air gap (6) pass through the at least one Hall element. The yoke (3) consists of an oblong piece of sheet metal or a laminate of sheet metals with two ends (10, 11) that has been brought by bending into a form with which the front sides of the ends (10, 11) of the yoke (3) lie opposite each other and are separated by an air gap (14). The ends (10, 11) of the yoke (3) are tapered so that a width of the ends of the yoke is less than a width of the yoke.

An integrated magnetic-field sensor designed to detect an external magnetic field, comprising a first magnetoresistive structure for detecting the external magnetic field, the first magnetoresistive structure including first magnetoresistive means having a main axis of magnetization and a secondary axis of magnetization set orthogonal to one another. The magnetic-field sensor further comprises a magnetic-field generator, including a first portion configured for generating a first magnetic field having field lines in a first field direction, and a second portion, which is coplanar and is connected to the first portion, configured for generating a second magnetic field having field lines in a second field direction, the first magnetoresistive means being configured so that the main axis of magnetization extends parallel to the first field direction, and the secondary axis of magnetization extends parallel to the second field direction.

A magnetic-field sensor includes: a chip including a substrate having a first surface and an insulating layer covering the first surface; first and second magnetoresistors each extending into the insulating layer and having a main axis of magnetization and a secondary axis of magnetization; a first magnetic-field generator configured to generate a first magnetic field having field lines along the main axis of magnetization of the first magnetoresistor; a second magnetic-field generator configured to generate a second magnetic field having field lines along the main axis of magnetization of the second magnetoresistor. The main axes of magnetization extending transversely to each other and the secondary axes of magnetization extending transversely to each other. The first and second magnetoresistors extend into the insulating layer at a first distance and a second distance, respectively, that differ from one another, from the first surface.

The invention discloses a lightning induction voltage determining method and system on distributing lines. The method comprises the following steps of detecting a lightning current peak value; processing the lightning current peak value by adopting a lightning current waveform model to determine a first lightning current i (t); carrying out lightning return stroke model processing according to a detected height z between an observed point and the ground and the first lightning current i (t) to determine a second lightning current i (z, t); carrying out electromagnetic field propagation model processing according to a detected distance r between the observed point and a lightning current passway, the detected height z between the observed point and the ground, the total length H of the lightning current passway and the second lighting current i (z, t) to determine a horizontal electric field, a vertical electric field and a horizontal magnetic field produced by the lightning current; and carrying out field line coupling model processing on the horizontal electric field, the vertical electric field and the horizontal magnetic field to determine the total voltage produced by the induction of the lightning current on the lines. The scheme of the invention can realize the accurate analysis on induced overvoltage, and increases the analysis accuracy of the lightning induced overvoltage.

The invention relates to a lightning stroke fault determination method based on a waveform difference degree and a lightning stroke fault sample database. According to the method, when a fault occurs at a power transmission line, a travelling-wave fault range finding apparatus records a fault waveform; calculation is carried out by using a cubic b-spline wavelet to obtain an initial traveling wave arrival time of the fault; data 5ms after the initial traveling wave arrival time are selected to carry out normalization processing; the fault waveform after normalization processing is compared with all waveforms in the lightning stroke fault sample database and waveform difference degrees are calculated; and if a minimum value of difference degrees of the fault waveform and all waveforms in the lightning stroke fault sample database is less than a set threshold value, the fault type is determined to be a lightning stroke fault type; and otherwise, the fault type is determined to a non-lightning stroke fault type. According to the invention, compared with the existing lightning stroke fault identification method, the provided determination method has the following beneficial effects: confirmation of fault points by field line patrol workers is not required; the accuracy is high; and the method is simple and effective.