336 results about "Receiver coil" patented technology

The invention belongs to the technical field of gap measurement, and particularly relates to a high-temperature-resistant transparent shell type eddy current tip gap measuring device and method, and the device comprises a sensor probe module, a signal conditioning module, a data collection module and a data processing module. The sensor probe module is mounted on the outer wall of the casing; the sensor probe module comprises a permanent magnet excitation source, a soft magnet magnetic core and a receiving coil; the signal conditioning module is electrically connected with the receiving coil and is used for amplifying, filtering and integrating the weak induction signal; the data acquisition module is electrically connected with the signal conditioning module and converts an analog signal into a digital signal; the data processing module is used for processing the acquired digital signals and extracting blade tip clearance information.

A magnetic resonance (MR) receive coil (18) includes a conducting loop (20) that is resonant at a Larmor frequency of a design-basis B0 magnetic field of at least 3 Tesla; and a conducting trace (22) configured to detune the conducting loop from the Larmor frequency in response to a DC current flowing through the conducting trace. The conducting trace further includes a receive |B1|-field uniformity-enhancing inductor (L3) positioned at an intermediate point along the conducting trace.

The utility model discloses a linear displacement sensor, which relates to the technical field of sensors, and comprises a shell, a wire harness, a sheath, a printed circuit board and a sensing element, the printed circuit board is arranged in the shell, a sensing part is arranged on the printed circuit board, one end of the wire harness extends into the shell and is connected with the printed circuit board, and the other end of the wire harness is connected with the sheath. The other end of the wire harness is provided with a sheath, and the lower end of the housing is slidably provided with a sensing element. The induction part comprises a group of exciting coils and two groups of receiving coils, the receiving coils are arranged on the inner sides of the exciting coils, the exciting coils are connected with the oscillating circuit, and the receiving coils are connected with the detection circuit. According to the utility model, the sensing element is connected with the external measured object and is matched with the linear displacement sensor, so that non-contact measurement is realized, stray magnetic fields can be immunized, the interference of disordered magnetic fields is avoided, no magnet is needed, and the cost can be effectively saved.

A wireless charging device for use in providing electrical power to one or more portable electronic devices is provided. The wireless charging device includes a ferrous core and a housing surrounding the ferrous core. The housing includes a plurality of guides that align a cable. When the cable is aligned in the plurality of guides and a current is passed through the cable, the cable and the ferrous core act as a transmission coil to transmit power from an electrical power source to at least one receiving coil in a first portable electronic device.

The utility model discloses a wireless charging device for an insulated boom truck, which relates to the technical field of engineering machinery manufacturing and comprises a vehicle-mounted wireless transmitting unit arranged on a truck body, a wireless receiving unit and a platform storage battery, the vehicle-mounted wireless transmitting unit is composed of a human-computer interface, a switching power supply, a direct-current voltage stabilizer, a high-frequency inverter, a transmitting coil and a first controller, the vehicle-mounted wireless transmitting unit is connected to a power supply, the wireless receiving unit is composed of a receiving coil, a rectifying module and a second controller, the receiving coil is arranged outside the lifting platform, and the rectifying module is connected with the second controller. The power supply comprises a chassis storage battery integrated on the vehicle body and a mains supply connected with the external part in an inserted manner. The vehicle-mounted wireless transmitting unit is mounted at the tail part of the vehicle body of the insulating bucket arm, and the wireless receiving module is mounted in the vehicle body at the upper end of the insulating arm; and the wireless charging device charges the platform storage battery by using the electric energy of the chassis storage battery.

A wireless charging accessory is described. The wireless charging accessory is adapted to be attached to an aerosol generating device that includes a first charging port. The wireless charging accessory has a flexible outer sleeve adapted to removably receive the aerosol generating device to attach the wireless charging accessory thereto. A wireless charging assembly (12) includes a power receiving coil (20) for wireless inductive charging. The wireless charging accessory also includes a first printed circuit board assembly (16) with a first printed circuit board (18), and a second printed circuit board assembly (34) that includes a second printed circuit board (36), and a second charging port mounted on the second printed circuit board (36) and adapted to engage with the first charging port when the wireless charging accessory is attached to the aerosol generating device in use. A power circuit is electrically connected to the receiving coil (20) and the second charging port. The power circuit includes one or more electronic components mounted on one or both of the first and second printed circuit boards (18, 36). The first printed circuit board assembly (16) is spaced apart from the second printed circuit board assembly (34).

The invention relates to an integrated circuit for redundant inductive sensor coils. A system for inductive position sensing is described. The transmit coil may generate a magnetic field. The first set of receiver coils may pick up a first voltage signal from the magnetic field. The second set of receiver coils may pick up a second voltage signal from the magnetic field. The first inductive sensor and the second inductive sensor may have a fixed relationship. An integrated circuit (IC) may multiplex the first voltage signal and the second voltage signal to process one of the first voltage signal and the second voltage signal using one channel at a time. The IC may convert the first voltage signal to a first digital parameter and convert the second voltage signal to a second digital parameter. The IC may output the first digital parameter and the second digital parameter to trigger the at least one rationality checker to determine whether the first angular position and the second angular position satisfy a fixed relationship.

A smart ring, comprising a ring body. A circuit board assembly (3) and a storage battery (4) are packaged in the ring body; a control chip (32) and an NFC chip (33) are packaged on the circuit board assembly (3); the ring body comprises a ring frame (1); a coil (2) is arranged on a circumferential wall surface of the ring frame (1), and the coil (2) surrounds the circumferential wall surface of the ring frame (1); and the coil (2) is electrically connected to the circuit board assembly (3). According to the present application, a receiving coil is arranged in the circumferential direction of the ring frame, and a traditional NFC signal communication antenna is replaced with the coil, so that the NFC electromagnetic charging receiving coil and the NFC signal communication antenna are integrated into a single antenna, thereby facilitating structural optimization; in addition, the coil is circumferentially arranged around the ring frame, so that the detection range is expanded to the greatest extent. Compared with a traditional approach of arranging an NFC signal communication antenna in a local area, the signal reception range and sensitivity can be effectively increased, thereby enabling a more responsive and stable wireless connection.

The utility model discloses an inductance encoder for a rotating motor, which relates to the technical field of encoders and comprises a signal receiving and demodulating module, the signal receiving and demodulating module comprises a rotor plate, a stator coil plate and a dual-channel induction inductance sensor chip, the rotor plate is connected with a rotating shaft portion of the rotating motor, and the stator coil plate is connected with the inductance sensor chip. The stator coil plate comprises an exciting coil and a receiving coil, non-contact electromagnetic induction is formed among the rotor plate, the exciting coil and the receiving coil, and the inductance sensor chip is used for demodulating amplitude modulation signals on the receiving coil and converting the amplitude modulation signals into sine and cosine signals; the signal processing module is used for receiving the sine and cosine signals output by the inductive sensor chip and processing the sine and cosine signals to obtain signal information; the signal decoding and outputting module is used for receiving the signal information and converting the signal information into angle position information of a motor rotor plate; the inductance encoder has the characteristics of high anti-interference capability, strong environmental adaptability and low cost.

A wireless power reception system 1 includes: a power reception device 5 including a power reception coil 51 that receives power supplied wirelessly from a power transmission coil 41 of a power transmission device 4 installed in a road surface, at least a portion of the power reception coil 51 being housed in a wheel 3 of a moving body 2; and an onboard device 6 which is installed in the moving body 2 and which is electrically connected to the power reception device 5, wherein the power reception device 5 can transmit received power to the onboard device 6, and the power reception coil 51 has a convex shape pointing downward in a side view as seen from an axial direction of the wheel 3.

The utility model provides a contactless plug charging device for an electric bicycle and the electric bicycle. The contactless plug charging device for the electric bicycle comprises a charging transmitting end and a receiving end. The charging transmitting end converts the high-frequency alternating current into an electromagnetic field and focuses the electromagnetic field on the receiving coil; and the receiving end clings to the groove of the transmitting end through the embedding part, so that high-efficiency energy transmission is ensured. A rectifying device is arranged in the receiving end and comprises a rectifying inductor and a rectifying module, high-efficiency conversion from high-frequency alternating current to stable direct current is achieved, and a temperature sensing fuse is arranged to guarantee safety. In addition, the receiving end shell is provided with a charging state indicating lamp and a storage groove, and an automatic winder is arranged in the storage groove. The transmission efficiency of the device exceeds 85%, the operation process is simplified, the problem of poor contact is reduced, the safety is remarkably enhanced, the electric shock risk is reduced, the device has an overheating protection function, the device is suitable for various electric bicycle charging scenes, and the use experience of a user and the durability of the device are improved.

The invention belongs to the technical field of petroleum well logging, and discloses a method for eliminating array induction direct coupling signals, which comprises the following steps of: calibrating the unit thickness change of an adjusting piece and the quantitative contribution of each receiving coil direct coupling signal through electromagnetic simulation modeling and an underground environment equivalent experiment; the target thickness is solved and replaced through a linear correction model, closed-loop calibration is matched to enable a direct coupling signal to approach a preset threshold value, based on array induction logging, an existing three-coil system structure is difficult to thoroughly offset the direct coupling signal due to machining errors, useful signal extraction is seriously disturbed, the method does not need to modify a core structure of an instrument, operation is easy and convenient, adaptability is high, and the method is suitable for large-scale popularization and application. Direct coupling signals are eliminated accurately and thoroughly, the measurement accuracy of the stratum conductivity is effectively improved, and reliable data support is provided for oil and gas reservoir identification and evaluation.

The utility model discloses a wireless charger, and belongs to the technical field of wireless charging. According to the wireless charger provided by the utility model, when the semiconductor chilling plate works, the low-temperature side of the semiconductor chilling plate can cool air in the first cavity, then the low-temperature air is blown to the first channel through the blowing piece, and finally the low-temperature air is blown out through the first air outlet; the first air outlet is arranged opposite to the wireless receiving coil assembly of the charging equipment, so that the cooling speed of the wireless receiving coil assembly can be greatly improved, and the heat dissipation effect is improved; meanwhile, the air blowing piece can blow air heated by the high-temperature side of the semiconductor chilling plate in the first cavity to the second channel, so that the high-temperature air is exhausted through the second air outlet, and the situation that the temperature of the wireless charger rises due to the fact that the high-temperature air remains in the shell and the second air outlet and the charging equipment are arranged in a staggered mode is avoided; and the heat dissipation effect of the charging equipment is further improved.

The invention discloses an anti-offset coil and a design method thereof, and the method comprises the steps: coil structure design, coil parameter modeling, ss compensation topological structure selection, and ss-type wireless power transmission system construction for simulation verification. Hexagonal coils are adopted as research objects, the hexagonal coils are subjected to combined design, and the designed coils are modeled; mutual inductance and self-inductance parameters of a coil are analyzed, a simulation circuit is built, it can be known from a magnetic induction distribution cloud picture that the proposed coupling mechanism can generate a uniform magnetic field in a charging area above a transmitting end, the anti-offset capability is remarkably enhanced, and it is obtained through simulation that in the transverse + / -80 mm offset and the longitudinal + / -40 mm offset, the anti-offset capability is remarkably improved. The range system can maintain the output power of 300W and the efficiency is not lower than 80%, when the receiving coil deviates by 120 degrees from the X axis, the transmission characteristic of the system is consistent with the characteristic when the receiving coil deviates along the X axis, and the Y axis also has the characteristic, so that the system has key guiding significance for solving the endurance problem of the unmanned aerial vehicle.

The invention discloses an eddy current detection coil in a pipeline, a parameter optimization method and a mutual inductance type eddy current sensor. The coil comprises an exciting coil and a receiving coil, the exciting coil and the receiving coil are both of a hexagonal structure and a curved surface structure, and the number of turns of the receiving coil is smaller than that of turns of the exciting coil; the exciting coils and the receiving coils are arranged in parallel in even numbers, the exciting coils are connected in parallel, and the adjacent receiving coils are connected in series. And an excitation magnetic field has more reasonable distribution in a plane, so that the response consistency under different defect orientations is improved.

The invention provides a T-shaped joint automatic welding web positioning far-field eddy current probe, an excitation unit comprises an auxiliary shielding layer, a magnetism gathering bowl and an excitation coil, a receiving unit comprises a magnetic column, a balance resistor and a receiving coil, the upper end of a probe shell is provided with a signal I / O plug, and the main shielding layer, the auxiliary shielding layer, the magnetism gathering bowl and the excitation coil are sequentially sleeved along the periphery to form an integrated structure. The probe shell is provided with a cavity with an open lower end, the main shielding layer, the auxiliary shielding layer, the magnetism gathering bowl and the exciting coil are combined and arranged in the cavity, the receiving coil is sleeved on the outer side of the magnetic column, the lower end of the main shielding layer is provided with a blind hole, the receiving coil and the magnetic column are combined and arranged in the blind hole, and the balance resistor and the receiving coil are combined to form a bridge circuit structure. The balancing resistors form two bridge arms of the bridge, and the two receiving coils form the other two bridge arms of the bridge; precise positioning of the web plate in the H-shaped steel plate T-shaped joint welding process is achieved, and the technical problem of welding deviation in the H-shaped steel plate automatic welding process is solved.

The invention discloses a high-order multi-relay-based wireless electric energy transmission system and method. The wireless electric energy transmission system comprises a transmitting end device, a relay end device and a receiving end device, the transmitting end device comprises a negative resistance source, a transmitting circuit and a mode control circuit; the relay end device comprises a plurality of relay circuits which are sequentially arranged in the direction perpendicular to the connecting line direction of the transmitting end device and the receiving end device. A bistable state phenomenon occurs when the coupling rate of the system deviates, namely a coexistence state of an over-detuning mode and an under-detuning mode exists. The mode control circuit is introduced, so that the system stably works in an over-detuning mode, higher electric energy transmission performance is realized, and the flexibility of a receiving coil in spatial arrangement is remarkably improved; meanwhile, compared with a traditional WPT system, an additional complex frequency tracking device does not need to be added, and the problem that the transmission efficiency and the output power are reduced due to the frequency splitting phenomenon under the condition of coupling rate offset can be avoided.

This invention discloses a dynamic noise active suppression suspension system for air-to-ground electromagnetic detection, belonging to the field of geophysical exploration technology. It includes a coil vibration suppression system connected to a UAV, a receiving coil sensor, and a coil attitude control system. The coil vibration suppression system is connected to the pitch frame of the coil attitude control system via a carbon fiber tube assembly. The pitch frame is connected to the receiving coil sensor via two roll shafts. One roll shaft is connected to a first motor, and a second motor is mounted on the frame edge of the pitch frame perpendicular to the roll shaft. Both the first and second motors are connected to a controller. The coil vibration suppression system suppresses the vibration amplitude of the receiving coil and absorbs the motion noise generated by the receiving coil vibration. The controller collects and controls the first and second motors to adjust the attitude of the receiving coil, suppressing the motion noise generated by the attitude change of the receiving coil. This application significantly reduces the motion noise of air-to-ground transient electromagnetic reception data, enabling low-noise detection using air-to-ground transient electromagnetic methods in complex environments.

A photochemical reactor can include a plurality of flow cells whose illuminated internal surfaces coincide with a Φ = Φ * iso-flux boundary. Identical cells can be connected by short, small-diameter interconnects to form a cell chain of pitch p, and multiple chains can be arranged in parallel to meet throughput while maintaining residence-time and pressure-drop limits. Each cell can be illuminated by opposed, orthogonally oriented LEDs in 2-LED, 4-LED, or 6-LED topologies. In some embodiments, 6-LED illumination can be provided by a wireless cube LED apparatus having six emitters on orthogonal faces, a centrally located receiver coil, rectifier, and current driver. The cube can insert into keyed pockets that set optical standoff δ and orientation. A controller can sweep a transmitter frequency to select an operating frequency f_T* that maximizes received power for the installed receiver-coil geometry.

Embodiments of the present invention provide a radio power receiving circuit including a power receiving coil, a matching circuit, a rectifier circuit, a controller, and an output terminal, wherein the rectifier circuit includes at least one switching unit. The power receiving coil is configured to receive energy and output an alternating current. The matching circuit is configured to perform matching to the alternating current and to transmit the alternating current to the input terminal of the rectifier circuit. The rectifier circuit is configured to convert the input alternating current to direct current. The controller is configured to determine the duty cycle of at least one switching unit based on the output voltage of the voltage output terminal and to control the turn-on or turn-off of at least one switching unit based on the duty cycle to perform voltage regulation with respect to the output voltage, wherein the duty cycle is independent of the main frequency of the radio power receiving circuit.

The invention discloses a wireless electric energy receiving circuit, electronic equipment and a wireless charging system, and relates to the technical field of circuits. The wireless electric energy receiving circuit comprises a receiving coil, an impedance compensation module, a rectification module, an impedance adjusting module and a processing module. Wherein the receiving coil, the impedance compensation module and the rectifier module are connected in series for supplying power to a load. The impedance adjusting module and the impedance compensation module are connected in parallel. And the processing module controls the waveform of the electric signal in the receiving coil by controlling the on and off of the impedance adjusting module, so as to transmit communication information to the wireless electric energy transmitting circuit. Thus, a communication capacitor connected in parallel with the rectification module is removed, and the problem that the communication capacitor connected in parallel with the rectification module has large plate vibration, and consequently large capacitor howling is generated can be avoided.

The invention discloses a liquid viscosity measuring method based on a phase-locked loop algorithm. Liquid flows in the guided wave resonance element, the excitation and receiving coil is arranged on the surface of the guided wave resonance element in an attached mode, a permanent magnet is arranged beside the excitation and receiving coil, the temperature control module is connected with the guided wave resonance element, and the current sampling resistor is connected with the excitation and receiving coil in series. Ultrasonic guided-wave vibration is generated in a guided-wave resonant element through an exciting coil, voltage and current response signals of the resonant element are synchronously acquired by using a dual-channel synchronous sampling module, an impedance real part of the resonant element is accurately extracted according to the response signals, and accurate measurement of the liquid viscosity is realized by combining an established impedance-viscosity relation model. According to the invention, not only are the limitations of complex equipment, high cost and high requirement on sample volume of the traditional viscosity measurement method overcome, but also the problems of poor measurement stability, complex device manufacturing and difficulty in realizing online real-time monitoring under the working condition of strong noise or high damping in the existing method are solved.

An apparatus can include a first ear simulator coupler configured to receive a first hearing device within a first aperture, with an acoustic microphone provided below the first aperture to capture first audio input data associated with the first ear simulator coupler. A second ear simulator coupler can comprise a second aperture configured to receive a contact hearing device ear tip, the second ear simulator coupler including a receive coil configured to obtain a second audio input data corresponding to a transmitted signal from the contact hearing device ear tip when inserted within the second ear simulator coupler. The apparatus can include an audio output port can be connected by a switch to a selected one of a first audio processing path corresponding to a simulated hearing experience of the first hearing device, or a second audio processing path corresponding to a simulated hearing experience of the contact hearing device.

The invention provides a code channel and an eddy current encoder, the code channel comprises a main body, the front surface of the main body is provided with a continuous window formed by single windows in an array along a preset length direction, the single windows are of hollow structures, and the span of the single windows in the preset length direction is as follows; through the shape design of a continuous window structure on a code channel, the window structure is improved into a structure with a continuously changed sectional area, so that when a magnet exciting coil moves on the surface of the code channel, the strength of an eddy current generated by a high-frequency magnetic field of the magnet exciting coil on the surface of the code channel is gradually changed; therefore, the change of the signal received by the receiving coil is more regular, and the position measurement precision of the eddy current encoder is improved.

The invention relates to a metal detector for detecting at least one metal target in a detection area, the detector including: · at least one receiving coil arranged to detect a magnetic field originating from the detection area and to generate a signal corresponding to the magnetic field, referred to as "detection signal"; and · a detection unit (24) including: - a filtering module (28) arranged to receive the detection signal as input and to filter this signal according to at least first and second filtering configurations, the second filtering configuration having a shorter temporal support than the first filtering configuration; and - a control module arranged to control the filtering module (28) on the basis of at least one data item contained in the detection signal and providing information on the presence of a metal object.

The invention discloses a crawler-type pipeline detection device and method based on a magnetic eddy current principle, and belongs to the technical field of pipeline defect detection.The crawler-type pipeline detection device comprises a crawler-type moving vehicle, a detection module, a detection module and a control module, and the crawler-type moving vehicle is provided with a power source and electrically connected with the power source; the camera is arranged at the upper end of the crawler-type mobile vehicle; the camera is electrically connected with the power supply and the control module; the magnetic eddy current probe is arranged at the front end of the advancing direction of the crawler-type mobile vehicle and is electrically connected with the power supply and the control module; the magnetic eddy current probe comprises three detection coils, one detection coil is a central excitation coil, and the other two detection coils are differential receiving coils; the center excitation coil is connected to the output end of the signal generator through a signal excitation line, the two differential receiving coils are connected to the input end of the differential amplifier through signal receiving lines, and the whole circuit is connected to the control module. According to the invention, real-time image transmission, dotting positioning, video monitoring, data acquisition, small crack detection and effective early warning can be carried out, and various defects of manual detection are avoided.

The application provides a kind of single excitation-receiving module-based speed measurement positioning system, comprising: first, second zero flux coil assembly, excitation receiving module, power supply and signal processing unit, excitation receiving module includes excitation coil, first receiving coil and second receiving coil, excitation coil is set on the first zero flux coil assembly, first receiving coil and second receiving coil are symmetrically set relative to the center line of excitation coil, first receiving coil and second receiving coil are spaced apart on the second zero flux coil assembly, power supply is used to provide direct current to excitation coil, signal processing unit is connected with excitation receiving module, signal processing unit is used to complete the speed measurement and positioning of train according to the first receiving induction voltage of first receiving coil and the second receiving induction voltage of second receiving coil. The technical scheme of the application is used to solve the technical problems of complex speed measurement positioning equipment and large high-speed measurement error in the prior art.

The present invention relates to the field of electronic products, and in particular to an adjustable inductance coil and a control method. The adjustable inductance coil comprises a mechanical expansion and contraction mechanism and an inductance coil group, wherein a plurality of connection points are provided on the mechanical expansion and contraction mechanism, the inductance coil group being fixed on the connection points. During the process of expansion and contraction of the mechanical expansion and contraction mechanism, the distance between adjacent connection points changes, such that the inductance coil group neither generates excessive tension nor sags. The present invention relates to a mechanically-manipulated deformable coreless coil structure, which may be used as a power resonant device or a transmitting or receiving coil for wireless energy transmission. The inductance value of the coil may be changed by means of an electric motor or a manual operation. When the coil cooperates with the electric motor, the inductance of the coil can be accurately measured and controlled by a sensor and a control circuit, or is directly controlled by means of cooperation with a power electronic driver to obtain the optimal operating conditions. The present invention achieves a high compression ratio in terms of structure, such that a large-sized coil can be accommodated by a very small size.

[Problem] To provide a configuration capable of improving usability related to wireless charging. [Solution] Provided is an aerosol generation system comprising an aerosol generation device and a first panel. The aerosol generation device has: a generation unit that generates an aerosol from an aerosol source; a control unit that controls the operation of the generation unit; a battery that supplies power to the generation unit and the control unit; and a housing. The first panel has a power reception coil for receiving power for charging the battery, and is detachably connected to the housing so as to cover a portion of the housing. The aerosol generation device and the first panel are provided with terminals for electrically connecting the power reception coil and the battery, and the power reception coil and the battery are electrically connected via the terminals in a state in which the first panel is connected to the housing.