177results about "Magnetic sensor packaging" patented technology

The three-axis Hall magnetic sensing chip comprises a magnet gathering body, a first Hall element group and a second Hall element group, the first Hall element group and the second Hall element group are arranged in a plane at intervals, the magnet gathering body is arranged on Hall elements, and the orthographic projection of the magnet gathering body on a Hall plane has a first direction symmetry axis and a second direction symmetry axis which are orthogonal. The first Hall element group comprises two first Hall elements which are connected in a contrast difference mode, wherein the magnetic induction centers of the two first Hall elements are located on a first-direction symmetric axis and are symmetrically arranged relative to a second-direction symmetric 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 relative to the second direction symmetry axis, and the magnetic induction centers of the two second Hall elements are perpendicular to the connecting line between the orthogonal intersection points of the first direction symmetry axis and the second direction symmetry axis; the magnetism gathering body is located on one side of the connecting line of the two magnetic induction centers. According to the invention, a high inter-axis signal rejection ratio is realized, and the Z-axis signal can be directly output.

Electronic device uses a sensor to determine whether an accessory device covers a housing or the housing and a display. When the electronic device determines, based on the sensor, the housing and display are covered by the accessory device, the electronic device may deactivate the display. Further, when the electronic device determines, based on the sensor, the housing is covered by multiple sections of the accessory device, the electronic device may permit a processor to run at a higher temperature limit, as opposed to a single section covering the housing. In this regard, the accessory device functions as a thermal buffer to absorb thermal energy from the processor(s) running at the higher temperature limit. Additionally, based on the position of the accessory device relative to the electronic device, the electronic device may further activate applications, animations, production information (e.g., regarding the accessory device), or a combination thereof.

An electronic device may include: a magnetic sensor configured to identify the intensity of a magnetic field; a wireless communication circuit; a processor; and memory electrically connected to the magnetic sensor, the wireless communication circuit, and the processor, and storing instructions. The processor may be configured so that the electronic device: uses the magnetic sensor to identify a plurality of intensities of the magnetic field during a first period; identifies, on the basis of the plurality of intensities, whether a reference intensity has been updated; identifies a first state of the electronic device when the reference intensity has been updated, the first state being identified on the basis of a comparison result between the latest intensity among the plurality of intensities and the updated reference intensity; and performs a function according to the identified first state. Various other embodiments identified through the specification are possible.

The invention discloses a zero magnetic shielding device and a use method thereof, and the device comprises a magnetic shielding cylinder which is composed of a shielding cylinder body and a shielding cover detachably connected with the shielding cylinder body. And the non-magnetic multifunctional test frame is arranged in the magnetic shielding cylinder and consists of an arc-shaped seat, a lifting mechanism, a test bedplate, a track, a storage rack, a Helmholtz coil and a folding nylon magnetic sensing assembly. When the magnetic flux and residual magnetism switching test is carried out on the object to be tested in the magnetic shielding cylinder, the non-magnetic multifunctional test frame does not need to be replaced, the efficiency of the magnetic flux and residual magnetism switching test on the object to be tested in the magnetic shielding cylinder is improved, and the advantage of convenient switching test is achieved. And the method has the advantages of high measurement precision and wide application range.

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.

The present invention discloses a DC magnetic field testing device for a magnetic field coil, comprising a device main body, a display component provided on the front end surface of the device main body, a control button provided on the front end surface of the device main body, a charging port provided on the bottom of the device main body, a probe cable fixedly connected to the top of the device main body, a Hall probe fixedly connected to the other end of the probe cable, a rectangular block fixedly connected to the outer surface of the Hall probe, a protective tube fixedly connected to the right side surface of the device main body, a storage component fixedly connected to the back of the device main body, and a charging component provided on the bottom of the device main body; the DC magnetic field testing device for a magnetic field coil can more intuitively display the remaining power of the device by providing the display component, and can issue an alarm when the power is too low to remind the user to charge; the protective component provided can protect the Hall probe after use to prevent damage to the probe.

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.

The invention relates to a Wiegand sensor arrangement (100) comprising: a Wiegand sensor (3) with a Wiegand wire (3.2), a sensor coil (3.3) surrounding the Wiegand wire (3.2), a first field conducting element (3.4) arranged at a first end (3.2.1) of the Wiegand wire (3.2), and a second field conducting element (3.5) arranged at a second end (3.2.2) of the Wiegand wire (3.2) opposite the first end (3.2.1), as well as a printed circuit board (2) on which the Wiegand sensor (3) is arranged, wherein the first field conducting element (3.4) and the second field conducting element (3.5) each have a fastening section (3.4.4, 3.5.4), wherein the Wiegand sensor (3) is connected to the printed circuit board (2) via the fastening section (3.4.4) of the first field conducting element (3.4) and the fastening section (3.5.4) of the second field conducting element (3.5) is fastened to the circuit board (2), wherein the fastening section (3.4.4) of the first field conducting element (3.4) and the fastening section (3.5.4) of the second field conducting element (3.5) are designed such that between the sensor coil (3.3) and the printed circuit board (2) there is an installation space (6) which is laterally delimited by the fastening section (3.4.4) of the first field conducting element (3.4) and the fastening section (3.5.4) of the second field conducting element (3.5), and wherein at least one component (4, 5) is arranged on the printed circuit board (2) in the installation space (6).

In a magnetic sensor having a structure in which a magnetic sensor module is housed in a housing, damage to a magnetosensitive element during assembly is prevented. A magnetic sensor (S) is provided with a housing (2, 3), a magnetic sensor module (1) housed in the housing (2, 3), and an insulating dummy substrate (4). A magnetic sensor module (1) is provided with: an insulating substrate (10); a sensor chip (100) mounted on the upper surface (11) of the substrate (10); a terminal electrode (72) provided on the upper surface (11) of the substrate (10); a wiring pattern (82) provided on the lower surface (12) of the substrate (10); a first via conductor (V12) that is provided through the substrate (10) and connects one end of the wiring pattern (82) and the terminal electrode (72); and a second via conductor (V32) that is provided through the substrate (10) and connects the other end of the wiring pattern (82) and the sensor chip (100). The dummy substrate (4) is disposed between the inner wall of the frame (2, 3) and the lower surface (12) of the substrate (10).

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.

In an example, a Hall sensor can include an IC die formed on a lead frame that is configured to conduct a current, the IC die being configured to sense a magnetic field resulting from the current. The Hall sensor can include at least one magnetic permeability material film formed on the IC die. The Hall sensor can include at least one permalloy material layer formed on the respective at least one magnetic permeability material film, the at least one magnetic permeability material film and the at least one permalloy material layer combining to provide a magnetic concentrator providing concentration of the magnetic field.

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.

Measuring device (22) for the contactless detection of a material parameter on a test object (12), with a measuring sensor (18, 18a-18d) for the distance-dependent contactless detection of the material parameter and a carrier part (20) to which the measuring sensor (18, 18a-18d) can be attached, as well as a connecting device (26) for the mechanical and electrical connection of the measuring sensor (18, 18a-18d) and the carrier part (20) in order to transmit a signal, wherein the connecting device (26) is designed such that the measuring sensor (18, 18a-18d) can be attached to the carrier part in a variably selectable manner along at least one axis.

Disclosed in the embodiments of the present invention is a magnetic tunnel junction signal isolator with electric shielding layer. In the isolator, a coil is located between a magnetic shielding layer and an electric shielding layer; the electric shielding layer is located between the coil and a magnetoresistive sensor, the magnetoresistive sensor is composed of a plurality of magnetic tunnel junctions that are connected in a series-parallel way. The two ends of the coil are electrically connected to a circuit having a first reference ground used to send a signal; a signal is sent from the magnetoresistive sensor to a receiving circuit connected to a second reference ground. The magnetic shielding layer is electrically connected to the first reference ground in a single-point or multi-point mode, or it is completely electrically isolated from the first reference ground. The electric shielding layer may instead be electrically connected to the second reference ground in a single-point or multi-point mode, or it may be completely electrically isolated from the second reference ground. Or, the electric shielding layer and magnetic shielding layer are respectively electrically connected to any potential or potentials between the first reference ground and the second reference ground in a single-point or multi-point mode. The embodiments of the present invention, prevent the electric field from corrupting the magnetoresistive sensor signal, as such solving the problem of interference and damage caused to a magnetic tunnel junction in the magnetoresistive sensor by the coil.

A magnetic sensor includes a sensor housing, a magnet, a printed circuit board assembly, a first sensor element, and a second sensor element. The sensor housing includes a pocket and a magnet opening. The magnet is disposed in the magnet opening. The printed circuit board assembly is disposed in the pocket. The printed circuit board assembly includes a first portion and a second portion. The first sensor element and the second sensor element are disposed on the second portion. The first sensor element and second sensor element are configured to measure magnetic flux density, and the magnetic flux generated by the magnet is configured to pass through the first sensor element in a first direction and pass through the second sensor element in a second direction that is opposite to the first direction.

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.

Some embodiments include a device, comprising: a housing; a circuit disposed in the housing, including a sensor array configured to generate electrical signals based on incident x-rays; a memory configured to store data for a plurality of configurations for the circuit; at least one magnetic sensor disposed in the housing; control logic disposed in the housing and configured to: receive a signal from the at least one magnetic sensor; select from among the configurations for the circuit based on the signal received from the least one magnetic sensor; and change an operation of the circuit by applying the data associated with the selected configuration to the circuit.

[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.