114results about "Magnetic sensor packaging" patented technology

The invention discloses a highly packaged magnetic sensing chip based on an NV color center, and the chip comprises a packaging housing (1) which is provided with a packaging pedestal and chip pins. The chip is characterized in that the chip also comprises an NV color center diamond (2) which is arranged on the packaging base; the laser diode bare chip (3) is arranged on the packaging base, and the light-emitting side of the laser diode bare chip faces the NV color center diamond; the microwave transmission microstrip line (4) is arranged between the interior and the edge of the packaging base and is electrically connected with the chip pins; the first photoelectric detector assembly (5) is arranged on the NV color center diamond and used for collecting fluorescence signals.

In described examples, an integrated circuit (IC) written on a substrate that includes a substrate surface includes a magnetic concentrator, a Hall sensor, a primary coil, and a secondary coil. The Hall sensor at least partially overlaps the magnetic concentrator. The primary coil at least partially overlaps the magnetic concentrator. The secondary coil at least partially overlaps the magnetic concentrator and the primary coil, and surrounds the Hall sensor.

Apparatuses, systems, and methods are provided for a magnetic sensing device including one or more linear magnetic sensors, such as Hall sensors. In some embodiments, the magnetic sensing device includes a housing, a substantially cylindrical shield mechanically coupled to the housing, a magnet disposed within a cavity defined by the substantially cylindrical shield, wherein the magnet defines a countersunk cavity, and / or a printed circuit board assembly (PCBA) disposed proximate a first end of the magnet opposite a second end of the magnet proximate an end of the housing proximate a measured medium.

A magnetometer system having a magneto-inductive sensor configured to provide satellite attitude determination, magnetic noise identification, and magnetic field information; electronics operably coupled to the sensor configured to protect against electrostatic discharge and measure temperature of the sensor for thermal calibration; and an aluminum chassis supporting and protecting the sensor.

A sensor package is proposed, including a tunneling magnetoresistance (TMR) sensor chip and a buffer layer having a modulus of elasticity of less than 1 GPa at a temperature of 20° C. The buffer layer is fitted on and / or under the TMR sensor chip.

A thermally insulated container (10) includes an inner container (11) and an outer container (14) surrounding the inner container (11) via a void (15). The inner container (11) and the outer container (14) contain a fiber reinforced plastic prepared by impregnating a base material with a resin. The inner container (11) includes a first tubular container (13) and a second tubular container (22) having internal accommodation spaces (23, 24) to reserve a refrigerant (16), and a refrigerant inlet tube (12) for introduction of the refrigerant (16). The accommodation space (24) is in communication with the accommodation space (23). The base materials in predetermined areas of the second tubular container (22) and the outer container (14) contain woven fabrics and unidirectional fiber sheets. The outer container (14) surrounds the second tubular container (22) such that the unidirectional fiber sheets in the respective predetermined areas are opposed to each other.

Various embodiments disclosed herein comprise systems and methods to conform magnetic field sensors to a target geometry. In some examples, an apparatus is configured to conform to a target geometry. The apparatus comprises a sensor mount and a sensor array. The sensor mount comprises a flexible state for a first environmental condition and a rigid state for a second environmental condition. The sensor mount transitions from the flexible state to the rigid state when the first environmental condition transitions to the second environmental condition. The sensor mount transitions from the rigid state to the flexible state when the second environmental condition transitions to the first environmental condition. The sensor array is coupled to the sensor mount.

A user computing device includes one or more first sensors that output one or more first signals based on a magnetic field measured via the one or more first sensors and one or more processors configured to execute instructions to perform operations. The operations include detecting whether the user computing device is receiving a charge from a charging device. When the user computing device is not receiving the charge, the operations include determining, based on the one or more first signals output by the one or more first sensors, whether the user computing device is proximate to the charging device, and when the user computing device is determined, based on the one or more first signals output by the one or more first sensors, to be proximate to the charging device, providing an output indicating the user computing device is not receiving the charge.

Magnetic field sensor and method of manufacturing a magnetic field sensor This magnetic field sensor comprises a sensor head, the sensor head having a printed circuit board terminal portion (18) of a printed circuit board (12) as well as a Hall element (22) and a ring magnet (16) on the printed circuit board terminal portion (18). The ring magnet (16) surrounds the printed circuit board end portion (18), and the Hall element (22) is partially arranged inside the ring magnet (16). The printed circuit board end portion (18), comprising the ring magnet (16) and the Hall element (22), is arranged in an encapsulation housing (14) made as an injection-molded plastic part. The encapsulation housing (14) permanently fixes the ring magnet (16) relative to the Hall element (22). (See Figure 7 for abbreviations.)

The invention provides a high-temperature superconducting weak magnetic detection device and system, and the device comprises a Dewar which is internally provided with a refrigerant; the reading circuit module comprises a reading circuit board and a shielding shell; an annular cavity is formed in the shielding shell, and the reading circuit board is arranged in the shielding shell; the embedded structure is inserted into the Dewar, an installation position of an SQUID chip is arranged on the embedded structure, and a lead channel is arranged on the side wall of the embedded structure; and the heat insulation structure is fixed and filled in the upper end opening of the embedded structure. According to the high-temperature superconducting weak magnetic detection device and system, connectors and fasteners do not need to be disassembled and assembled frequently in the refrigerant filling process, and operation is convenient; electrostatic point discharge is not easy to generate, and the electrostatic damage rate of the high-temperature SQUID is reduced; the high-temperature SQUID does not need to be exposed in the air in the refrigerant filling process, performance degradation of the SQUID is avoided, and the service life and the performance stability of the SQUID are further ensured; the fault rate of the system is reduced in practical application, and the reliability and stability of the system are improved.

Disclosed are methods and devices for detecting retained surgical items or other objects having a magnetic signature within a corpus of a patient. The device can comprise a handle, a shaft extending from the handle, and a distal sensing portion positioned distally of the shaft. The distal sensing portion can comprise one or more gradiometers comprising a plurality of magnetometers. The device can further comprise one or more output components configured to generate a user output to alert a user of a detected object.

This application relates to a position detection device, comprising: a first Hall element; a second Hall element; a differential amplifier configured to generate a differential voltage by differentially amplifying a first Hall voltage generated by the first Hall element and a second Hall voltage generated by the second Hall element; a summing amplifier configured to generate a summed voltage by summing the first Hall voltage and the second Hall voltage; a comparator configured to compare a reference voltage with the differential voltage to generate an error voltage; and a current converter configured to generate a bias current supplied to the first Hall element and the second Hall element based on the error voltage, wherein the device is configured to detect the position of a detected object based on the summed voltage.

The present invention relates to a current sensor system comprising a conductor and a packaged integrated circuit for sensing a current in the conductor, said conductor being external to the packaged integrated circuit. The packaged integrated circuit comprises : - a substrate (2) having an active surface (3) and a back surface (4), - one or more magnetic sensing elements (7) disposed in or on the active surface of the substrate, - a processing circuit disposed in or on the active surface of the substrate and arranged to process signals received from the one or more magnetic sensing elements to derive an output signal indicative of a sensed current in the conductor, - a housing (1), - a plurality of leads (8) having an outer lead portion extending outside the housing and an inner lead portion, - electrical connections (6) between the leads and the active surface of the substrate, wherein the back surface of the substrate is disposed on a support (5) formed by at least two inner lead portions of said plurality of leads and the active side of the substrate is oriented towards the outer ends of the outer lead portions of the leads in a direction perpendicular to a plane defined by the support.

The invention provides a miniaturized single-beam multi-reflection atom magnetometer probe. The miniaturized single-beam multi-reflection atom magnetometer probe comprises a prism assembly, an alkali metal atom gas chamber and a second curved surface reflector. The prism assembly converts incident light into circularly polarized light and comprises a first optical surface for receiving the incident light and a second optical surface for emitting the circularly polarized light. The alkali metal atom gas chamber is arranged opposite to the second optical surface, the second curved surface reflector is arranged on one side, back to the second optical surface, of the alkali metal atom gas chamber, and the second curved surface reflector reflects circularly polarized light penetrating through the alkali metal atom gas chamber back to the alkali metal atom gas chamber. The second optical surface reflects the circularly polarized light emitted to the second optical surface from the alkali metal atom gas cell to the alkali metal atom gas cell. According to the invention, circularly polarized light can repeatedly pass through the alkali metal atom gas chamber, atoms are polarized for multiple times, the number of atoms is equivalently increased in a limited area, the ultimate sensitivity of the atom magnetometer probe is improved, and miniaturization and integration of the atom magnetometer probe are realized.

The invention provides a combined coil magnetic field test tool and a measurement system, relates to the technical field of magnetic field measurement, and aims to solve the problems of low positioning precision, low operation efficiency and insufficient stability of existing coil magnetic field measurement. The test tool comprises a mobile platform, a coil mounting platform, a Hall probe and a combined coil to be tested, and is also provided with a three-axis adjusting mechanism, a coil limiting assembly and a height adjusting assembly, the three-axis adjusting mechanism drives the Hall probe to accurately move to a designated measuring point in a three-dimensional space, the coil limiting assembly fixes the combined coil to be measured to avoid displacement, and the height adjusting assembly adapts to different measuring height requirements. The measuring system comprises the testing tool and an upper computer control module. The device is high in positioning precision, convenient to operate and high in stability, can realize automatic and high-precision measurement of the magnetic field of the combined coil, meets the test requirements of multi-size combined coils, and remarkably improves the measurement efficiency and the data reliability.

[Problem] To prevent damage to an external magnetic body for collecting magnetic flux to a magnetosensitive element in a magnetic sensor provided with the external magnetic body. [Solution] A magnetic sensor 100 comprises: a sensor chip 20 having an element-forming surface 21 on which magnetosensitive elements R1 to R4 are formed; an external magnetic body 30 having an end surface 33 which is positioned at a distal end in a longitudinal direction and which faces the element-forming surface 21, and side surfaces 34 to 36 configuring an outer peripheral surface of a cross section perpendicular to the longitudinal direction; and a protective resin 4 covering at least a portion of the element-forming surface 21 and the side surfaces 34 to 36 of the external magnetic body 30. It is thus possible to prevent damage to the sensor chip 20 and the external magnetic body 30 even if an impact is imparted from the outside.

A sensor device includes a current conductor designed to carry an electric current, a differential magnetic field sensor chip arranged in an opening of the current conductor and designed to detect a magnetic field generated by the electric current, and a metal plate arranged over the current conductor and over the magnetic field sensor chip.

A magnetic field sensor for measuring magnetic field of a current applied to a lower electrode defined within a plasma chamber includes a conductor element disposed along a length of a tubular housing. A plurality of slots is defined on one side of the tubular housing to expose the conductor element.

The invention relates to a magnetic field probe (1) with a capsule (3) in which an MR-active substance (5) is encapsulated. It is particularly proposed to arrange two coils (7, 9) in the capsule (3). Furthermore, advantageous manufacturing processes for magnetic field probes (1) are described, as well as useful applications of the magnetic field probe (1) according to the invention, and methods in which such magnetic field probes (1) and arrangements of magnetic field probes (1) are used (see Fig. 1).

A magnetic sensor device includes a stacked structure including a sensor substrate and a sensor element circuitry. The sensor substrate has a surface and a perimeter. The sensor element circuitry is provided on the surface of the sensor substrate, has a perimeter, and includes one or more magnetic sensor elements. As viewed in a plane parallel to the surface, a portion or all of the perimeter of the sensor element circuitry is located at a position different from a position of the perimeter of the sensor substrate.

To provide systems and methods for mapping magnetic fields by visualizing the magnetic field.SOLUTION: The system is configured to utilize a high-sensitivity magnetic field sensor 6 (for example, a magnetometer 12 disposed inside a tube 16 made of magnetic shielding material) disposed on one side of a magnetic field modulation screen 2 to acquire measurement data representing an image of a magnetic field. The magnetic field modulation screen includes a plurality of magnetic field-generating pixel elements (for example, current-carrying loops made of a magnetic field generating material). As an arbitrary configuration, the system is configured to enable reduction in an amount of measurement data required to reconstruct an image of the original magnetic field by using compressive sensing techniques. Compressive sensing is enabled so that an electric current is not supplied to the different pixel element to be selected in consecutive sampling time of the magnetic field-generating pixel elements of the magnetic field modulation screen.SELECTED DRAWING: Figure 3B

The present invention provides a magnetic sensor capable of eliminating the AC component contained in an ambient magnetic field. The magnetic sensor (1) comprises: an ambient magnetic field sensor (S0) that generates an ambient magnetic field signal (F0), a detection magnetic field sensor (S1) that generates a detection magnetic field signal (F1), a capacitor (C) that extracts the DC component by removing the AC component of a predetermined frequency band from the ambient magnetic field signal (F0), a compensation coil (31) that applies magnetic field elimination to the detection magnetic field sensor (S1) based on the DC component, a compensation coil (41) that applies magnetic field elimination to the detection magnetic field sensor (S1) based on the detection magnetic field signal (F1), and a bandpass filter (91) that removes at least the AC component of a predetermined frequency band from the detection magnetic field signal (F1). Thus, the AC component contained in the ambient magnetic field can be eliminated regardless of the positions of the ambient magnetic field sensor and the detection magnetic field sensor.

In one aspect, an angle sensor includes a first linear sensor and a second linear sensor. A first magnetic-field direction of a target magnet measured by the first linear sensor is substantially equal to a second magnetic-field direction of the target magnet measured by the second linear sensor. The first linear sensor, the second linear sensor and the target magnet are on an axis. The angle sensor determines an angle of a magnetic field.

To effectively address the diversification of hidden camera functions, better protect user privacy, and provide a portable, multi-functional detection device that is easy to carry, easy to use, relatively inexpensive, and advantageous for widespread adoption and use. [Solution] The device includes a housing 1, a handle 11 provided on the housing, a control circuit board 2 provided inside the housing, an infrared detector 3 and a red light generator provided on the housing, both of which are electrically connected to the control circuit board, the infrared detector is used to detect red light emitted from the camera, the red light generator is used to emit red light toward the camera, and a signal detection module 5 is further provided on the control circuit board, which is used to detect whether or not a communication signal is present in the surroundings.

A current sensor integrated circuit (IC) package is flip-chip bonded using a conductive film to connect the IC circuit bond pads to the lead frame. A conductive film is positioned between the die surface of a semiconductor die and at least one signal lead of the lead frame. The conductive film is conductive in a first direction between the die and the signal lead and nonconductive in other directions. The conductive film is further configured to control a gap height between the die and the lead frame to reduce die tilt, thus improving the sensitivity and performance consistency of the package.

The application discloses a three-axis Hall magnetic sensor chip and a Hall magnetic sensor, which comprises a magnetizer and first and second Hall element groups arranged in a plane and spaced from each other. The magnetizer is arranged above the Hall elements, and the orthographic projection of the magnetizer on the Hall plane has a first direction symmetry axis and a second direction symmetry axis which are orthogonal to each other. The first Hall element group comprises two first Hall elements which are connected in an anti-differential mode, the magnetic induction center of the two first Hall elements is located on the first direction symmetry axis, and the two first Hall elements are symmetrically arranged with respect to the second direction symmetry axis. The second Hall element group comprises two second Hall elements which are located on the same side of the first direction symmetry axis and are symmetrically arranged with respect to the second direction symmetry axis. The magnetic induction center of the two second Hall elements is perpendicular to the line between the orthogonal intersection of the first direction symmetry axis and the second direction symmetry axis, and the magnetizer is located on one side of the line between the magnetic induction centers of the two second Hall elements. The application can realize a high signal suppression ratio between axes and directly output a Z-axis signal.

The present disclosure relates to a housing assembly for accommodating printed circuit boards (PCBs). The housing assembly comprises a first housing portion configured to accommodate a first PCB, a second housing portion configured to accommodate a second PCB, and a separating portion for separating the first housing portion from the second housing portion. The separating portion comprises a first separating region in which the first housing portion and the second housing portion overlap and a second separating region that extends beyond the second housing portion and covers the first housing portion. The second separating region comprises one or more convection openings.

A thermally insulated container (10) includes an inner container (11), and an outer container (14) surrounding the inner container (11) via a void (15). Each of the inner container (11) and the outer container (14) contains a fiber reinforced plastic prepared by impregnating a base material with a resin. The inner container (11) includes a first tubular container (13) and a second tubular container (22) each having an internal holder (23, 24) to reserve a refrigerant (16), and a refrigerant inlet tube (12) through which the refrigerant (16) is introduced. The holder (24) is in communication with the holder (23). The base material in each of a predetermined area of the second tubular container (22) and a predetermined area of the outer container (14) contains woven fabrics. The predetermined area of the outer container (14) further includes a honeycomb sheet.