75 results about "Magnetic signature" patented technology

A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.

A weapon simulator assembly for use by an operator in weapon simulation training includes a simulated weapon and a simulated magazine detachably connected to the simulated weapon at a magazine receiver. A weapon processor is housed in the simulated weapon to monitor the number of rounds of simulated ammunition fired in relation to the simulated magazine. When the simulated magazine, which is identifiable by the weapon processor, is connected to the simulated weapon, the weapon processor will recognize the magazine by connecting with a magazine circuit having updated operating information or by identifying the magazine according to a magnetic signature member. The weapon processor will thereby monitor the number of rounds of simulated ammunition fired by a particular magazine, and disable use of the specific magazine once the simulated magazine has used the predetermined number of simulated rounds of ammunition.

An RFID/MFID system includes a tag and a reader. The tag is adapted to provide an RF identification signature when interrogated with an electric travelling wave and to provide an MF identification signature when interrogated with a magnetic travelling wave. The tag includes a target data object. The reader is adapted to read electrical and magnetic signatures of the target data object from the tag. A method of providing an identification function includes reading electrical and magnetic signatures of a target data object from tag. The tag provides an RF identification signature when interrogated with an electric travelling wave and provides an MF identification signature when interrogated with a magnetic travelling wave.

A metal object detecting apparatus comprising, a transmitter for generating a primary magnetic field having a resultant magnetic field direction which varies along any substantially linear path through a surveillance volume such that at three locations along said path the resultant magnetic field points in three mutually substantially orthogonal directions; a detector for measuring a secondary magnetic field at a plurality of positions as a function of time due to the presence of a metal object within the surveillance volume as it passes a plurality of measurement points there-through; and a processor for determining from the measured secondary magnetic fields a track through the surveillance volume comprising a plurality of locations of the metal object and a magnetic moment thereof at each location, the processor being adapted in use to derive there-from a magnetic signature that is characteristic of the metal object and independent of the orientation and track of the metal object.

A flow cytometer. In one embodiment, the flow cytometer has a microfluidic structure defining a channel with a periodically modulated path for transporting a stream of fluid with magnetic particles along the modulated path, and a superconducting quantum interference device (SQUID) sensor positioned over the microfluidic structure to define a detecting zone in the microfluidic structure for detecting magnetic signatures of a magnetic particle passing along the periodically modulated path through the detecting zone, where in use the stream of fluid with magnetic particles is regulated such that each magnetic particle passes singly along the periodically modulated path through the detecting zone.

The invention provides a multi-spectrum banknote counter and a method for controlling banknote counting, belonging to the banknote counting equipment technical field. A machine frame has the front side provided with a banknote receiving mechanism and the back side provided with a banknote feeding mechanism; a banknote feeding platform has the front side provided with a banknote pressing wheel and a counter tube and the lower part provided with a banknote feeding driving motor matched with the banknote pressing wheel; the banknote pressing wheel has the front side provided with a pinch wheel component, a banknote separating wheel of which is in gearing match with the banknote feeding driving motor; a magnetic sensor and a multi-spectrum sensor are embedded in the machine frame arranged below the pinch wheel component, and a front counter rotation wheel is arranged between the multi-spectrum sensor and a banknote receiving wheel; a machine body is provided inside with a main control board, a motor control board and an image processing board. The multi-spectrum banknote counter can simultaneously detect, process and feedback information of magnetic characteristics, visible light image characteristics and infrared light image characteristics of bank notes and is combined of functions of identifying currencies, forged bank note, denomination, face, edition and numbers, etc. into one body.

The present invention relates to a MR tracking method and device. More specifically, the present invention relates to a magnetic resonance tracking method and device, using a magnetic-susceptible object. A magnetic iso-surface induced by the object is selectively excited with a corresponding frequency offset; the magnetic iso-surface is then projected on three axes of a k-space, from which projections the spatial position of the object is calculated.

The present invention discloses a method for finding and analyzing underground magnetic anomalies. The method includes measuring magnetic signatures of the magnetic anomalies, interpreting the magnetic signatures to determine that the magnetic signatures are magnetic signatures of an underground fluid source, and determining at least one characteristic of the underground fluid source from the magnetic signatures.

A system and method for drilling a second well with respect to a first well is disclosed. A first drill string having a known magnetic signature is disposed at a first depth in the first well. A second drill string is used to drill the second well. The second drill string includes a magnetometer that obtains a magnetic measurement of the first drill string during drilling of the second well. A processor uses the obtained magnetic measurement and the magnetic signature of the first drill string to steer the second drill string to drill the second well.

An apparatus for measuring and detecting a magnetic signature of a magnetically detectable object from a distance includes a portable sensor group for detecting the magnetic signature. The portable sensor group includes three gradient sensors, each of the three gradient sensors adapted to independently measure both a magnitude and a direction of the magnetic signature, a first of said gradient sensors measuring an axial gradient in the vertical direction, a second of said gradient sensors measuring a first horizontal gradient in the vertical direction, and a third of said gradient sensors measuring a second horizontal gradient in the vertical direction.

A micromagnetometry system for detecting the presence of very small quantities of magnetic particles comprises a first magnetic hybrid AMR/PHR multi-ring sensor using a Wheastone bridge electrical configuration, a first current source, a first voltage measurement device, a set of at least one magnetic particles deposited on the first magnetic sensor and a processing unit for detecting from a set of different measured differential voltages a magnetic flux shift representative of the presence of a least one deposited magnetic particle.

The micromagnetometry system comprises means for creating a magnetic excitation field H_AC to make produce by each motionless magnetic particle a stray magnetic field oscillating along the time at a constant frequency ω ranging from 10 Hz to 3 KHz.

The present invention provides systems, methods and computer program products for point of sale (POS) based capture of reference magnetic signatures. In one embodiment, a magnetic signature included in a request to authorize a transaction associated with a magstripe card is retrieved from a database. If the transaction is determined to be non-fraudulent, the magnetic signature is used to provide a reference magnetic signature for the magstripe card. A transaction is determined to be non-fraudulent, for example, if the transaction is not reported as being fraudulent for a designated period of time such as for three to four months. In another example, a transaction is determined to be non-fraudulent if an indication or a confirmation is received from a card member of the magstripe card that the transaction was valid.

A secured holographic magnetic tape comprising a magnetic layer for encoding data, an embossable layer for embossing a hologram, and a metal layer. The metal layer comprises a plurality of sections forming a pattern based on a predetermined magnetic signature of the tape. A method of making the secured holographic magnetic tape and incorporating the same to a card.

A magnetic system for determining the location of a wellbore component in a first string relative to a wellbore component in a second string. The system includes a circumferentially distributed array of magnets positioned in the first string that is operable to produce a magnetic field in the wellbore proximate the location of the array of magnets. A magnetic field detector is operably associated with the second string and is operable to detect a magnetic signature of the magnetic field. One of the first and second strings is stationary within the wellbore. The other of the first and second strings is moveable in the wellbore such that the magnetic field detector is moveable relative to the magnetic field and such that when the magnetic field detector identifies the magnetic signature, the location of the array of magnets is correlated with the magnetic field detector.

Methods, systems, and apparatus for efficiently authenticating a document (e.g. a credit card) having a magnetic stripe are provided. The magnetic field at different points of the magnetic stripe are measured, e.g., by a checkout scanner to create a magnetic signature. Digital samples of the measurements may be transformed into coefficients of continuous basis functions, e.g., a Fourier transform. These coefficients are then compared to reference values (e.g. corresponding coefficients) to produce a measure of the authenticity of the document. The number of coefficients used can advantageously be smaller than the number of digital samples without compromising accuracy, thus using less bandwidth between a scanner and an authentication entity.

Methods, systems, and apparatus for accurately authenticating a document (e.g. a credit card) having a magnetic stripe are provided. The magnetic field at different points of the magnetic stripe are measured, e.g., by a checkout scanner to create a magnetic signature. Digital samples of the measurements may be used to create a representation of the magnetic signature. The representation can then be compared to reference values to produce a measure of the authenticity of the document. The reference values are updated over time to reflect changes in the magnetic stripe of the authentic document, as may occur due to physical deterioration. For example, reference values may be optimized based on recent measurements of the authenticated document to provide a more accurate determination of authenticity for future measurements.

Generally discussed herein are systems and apparatuses for multi-mode collaboration between entities in different jurisdictions. According to an example a technique can include determining a location of a remote communication device by at least one of a global positioning system (GPS), low frequency (LF) atomic time radio, earth magnetic signature, internet protocol (IP) address, and cell phone tower triangulation, determine regulations regarding communication from an internal network to the remote device based on the determined location, and configure the remote device to transmit and receive communications in a manner compliant with the determined regulations including one of voice over internet protocol (VOIP) communication, hypertext transfer protocol (HTTP) communication, text communication, voice communication, video communication, and augmented reality communication.

A pest control system (20) includes pest control devices (110) installed about an area or building (22). These devices (110) each include a bait member and a communication circuit. The communication circuit may be in the form of a passive RF tag that transmits information indicative of bait status and an identifier unique to each pest control device (110). A hand held interrogator (30) is provided to locate and communicate with the pest control devices (110) via the communication circuit. A data collection unit (40) to accumulate data gathered from the pest control devices (110) may alternatively or additionally be utilized. The bait member may be configured with a magnetic component to provide a magnetic signature indicative of the bait consumption behavior of targeted varieties of pest. The devices optionally include one or more environmental sensors to evaluate and predict pest behavior.

A system and method are disclosed for using magnetic signatures at predetermined positions along a roadway to monitor traffic travelling along the roadway by comparing the predetermined magnetic signatures with magnetic signatures being dynamically and continuously measured by each vehicle as they travel along the roadway. Magnetometers incorporated into mobile devices or otherwise incorporated within the vehicle measure magnetic signatures for comparison to the predetermined magnetic signatures that form a connection graph or database of points that correspond to possible paths along a roadway. When a magnetic signature match is made, the system recognizes that the vehicle has passed a particular point on a roadway and forwards that information to the appropriate entity for further processing, analysis, or toll assessment.

Methods and apparatuses of the present invention perform imaging using a contrast agent and/or a metamaterials lens, together with a low magnetic field detector. The apparatus according to one embodiment comprises: a field source capable of generating a magnetic field directed to an area in a subject; a low magnetic field detector arranged downstream from the field source, the low magnetic field detector being capable of detecting a low magnetic field signature associated with the area in the subject; and a metamaterials lens arranged downstream from the field source, the metamaterials lens concentrating the magnetic field produced by the field source to the area in the subject, and/or concentrating back the magnetic signature from the area in the subject to the low magnetic field detector.

Platform assembly for use with sorting articles comprises platforms connected to each other to form at least one level surface for transit thereabout by a plurality of vehicles. Each platform defines a first orientation in which the platform is in a retracted position and a second orientation in which the platform is in an extended position with a horizontal disposition. Each platform includes a first panel comprising a plurality of markers thereon, the markers forming a grid on the first panel for transit thereabout by the plurality of vehicles. Each marker includes a magnetic signature for determining an orientation of the marker. A container is positioned about at least one of the plurality of markers. In operation, the vehicle is directed by a control system to deposit an article carried thereon into a container associated with a marker based on the location and orientation of the marker.