57 results about "Electronic filter" patented technology

An adaptive electronic filter (200) comprising a memristive-based filter circuit (201) for filtering an electrical input signal to obtain a filtered electrical signal. The adaptive electronic filter (200) further comprises a memristive-based subtractor circuit (202) for obtaining an error signal based on the filtered electrical signal and a reference signal and an error minimization circuit (203) configured to provide adapted filter coefficients of the memristive-based filter circuit (201) based on the error signal to minimize the error signal.

An electronic filter (200a) for band stop or band pass filtering of an electrical input signal. The electronic filter (200a) comprises a memristive low-pass filter (210) comprising a first crossbar array of memristors (211, 212). Each memristor (211, 212) of the first crossbar array is configured to represent a respective filter coefficient of a low-pass filter implemented as a filter matrix. The electronic filter (200a) further comprises a memristive high-pass filter (220) comprising a second crossbar array of memristors (221, 222). Each memristor of the second crossbar array is configured to represent a respective filter coefficient of a high-pass filter function implemented as a filter matrix.

A water diverter device for use with a faucet including an electrically operable valve assembly and a control module for controlling the flow of cold water to a water filter.

The present description relates to an electronic filter circuit comprising: an integrated passive device; a bulk acoustic wave filter stacked on the integrated passive device on a first surface side of the integrated passive device; and at least one conductive post spanning the integrated passive device and connecting an electrode of the bulk acoustic wave filter to a contact element located on a second surface of the integrated passive device opposite the first surface and intended to be connected to an external element.

The invention discloses a tumor detection device and method based on a diamond quantum sensor, and belongs to the technical field of biomedical detection. The device comprises an optical fiber laser, an optical fiber beam splitter, an optical fiber attenuator, an optical fiber circulator, an optical filter, two photoelectric detectors, a differential amplifier, an electronic filter, a computer, a signal generator, two microwave antennas and an optical fiber probe. The optical fiber probe comprises an optical fiber packaged in a plastic shell, a diamond quantum sensor which is fixed at the tail end of the optical fiber and comprises an NV color center, and a first microwave antenna integrated beside the optical fiber. The laser excites the diamond to generate fluorescence, meanwhile, the signal generator drives the two microwave antennas to apply a microwave field, and the dielectric property of the sample to be detected modulates the fluorescence intensity of the diamond by influencing the microwave field. Laser noise is eliminated through a differential amplification and filtering technology, and fluorescence signal change is analyzed by a computer, so that dielectric constant distribution of a sample is reconstructed, and non-invasive and high-sensitivity detection of tumors is realized.

Microacoustic metamaterial filters for use in electronic devices are provided. The filters include an acoustic metamaterial transmission line and two acoustic metamaterial reflectors. The filters do not employ resonators and can be easily fabricated. The center frequency of the filter passband, and filter bandwidth is not limited by material properties. The filters can be very small, because stopbands are used to attain large out of band rejection without requiring more filter stages. The filters can be used for 5G or 6G wireless communications, and for other types of electronic filters.

An electronic filter is adapted for having a rolling material containing a leaf product rolled onto an exterior surface of the electronic filter where the electronic filter includes a liquid to be aerosolized and mixed with a smoke from burning the leaf product. The electronic filter can be pre-rolled into a cigarette with a leaf product and ready for consumption in a single use or can be adapted for multiple uses. The electronic filter includes a cylindrical body including a mouthpiece portion and a rolling material attachment portion, where the mouthpiece portion includes a mouthpiece having an orifice leading into the cylindrical body, and where the rolling material attachment portion includes an exterior surface of the cylindrical body adapted to have a rolling material rolled onto and sealed against the exterior surface. The electronic filter also includes a battery, storage tank and auto draw device.

The utility model discloses an electronic filtering equipment. The electronic filtering equipment includes a cigarette holder, an oil cup pipe, a containing component and a shell. The oil cup pipe is connected with the cigarette holder, and an electronic atomization chamber is arranged in the oil cup pipe. The electronic atomization chamber is communicated with the cigarette holder, and the electronic atomization chamber is used for atomizing plant essential oil. The containing component is connected with the oil cup pipe, and a containing groove is arranged in the containing component. The containing groove is used for containing tobacco, and the containing groove is communicated with the electronic atomization chamber. The oil cup pipe and the containing component are arranged in the shell. In use, the electronic atomization chamber can atomize plant essential oil. The atomized aroma generated by the electronic atomization chamber can be mixed with tobacco smoke in the containing component and then enter the cigarette holder. When a user smokes, the user can experience the original taste of tobacco and the aroma of essential oil, thereby avoiding single use experience and increasing use experience diversity.

The invention discloses an electronic filtration air purification system and application thereof in medical and industrial places, and relates to the technical field of air filtration and purification, the electronic filtration air purification system comprises a primary filter, a wind speed regulation and control mechanism, an ionization area, a dust collection area, a sterilization and disinfection area and an air outlet which are sequentially arranged from an inlet to an outlet of an air purification circulating pipeline; air firstly passes through the primary filter, and large-particle dust and impurities are preliminarily removed; then, the air enters the air speed regulation and control mechanism, the air speed regulation and control mechanism regulates and controls the air flow speed according to preset air speed parameters, and the air flow speed reaches the range required by the optimal purification effect; the regulated and controlled air enters the ionization area and the dust collection area, so that the air is purified; purified air enters the sterilization and disinfection area; and finally, the purified, sterilized and disinfected air is discharged from the air outlet. According to the invention, the whole process optimization from preliminary filtration to final purification is realized, the air velocity can be optimized by adding air velocity regulation before electronic filtration, and the purification efficiency is improved.

The utility model provides a smoke circulation filtering device for a laser engraving machine, including a filtering component, wherein the filtering component includes a laser engraving protective cover, a box machine, a box door, a first-stage fan, a U-shaped groove, a first-layer electronic filter element, a secondary fan, a second-layer electronic filter element, and a filter net. The utility model first-stage fan sends the smoke generated during engraving to the first-layer electronic filter element, and the smoke filtered by the first layer is sent to the second-layer electronic filter element by the secondary fan. The smoke filtered twice returns to the first-stage fan in the closed box machine and the laser engraving protective cover to perform the same work as before, thereby achieving the effect of circulating filtration in the closed laser engraving protective cover and the box machine, simplifying the pre-use installation operation, directly embedding the filtering system in the box machine, and integrating the filtering equipment that originally required external connection with the protective cover or the box machine, greatly reducing the difficulty of getting started and the demand for the use site.

Sensor system (2) for environmental detection, comprising: - an optical device (7) for generating an optical carrier signal (8), - a transmitter (15) comprising several transmitter units, wherein the transmitter (15) is configured to transmit electrical output signals (45, 48, 52, 56), comprising: - a first transmission path (41) of the transmitter (15), which is configured to provide a first electrical output signal (45), based on the optical carrier signal (8), to a first transmitter unit (46) of the several transmitter units, which is arranged on the first transmission path (41), - at least a second transmission path (42) of the transmitter (15), different from the first transmission path (41), which is configured to generate a second electrical output signal (48), based on the optical carrier signal (8), and to a second transmitter unit (49) of the several transmitter units, which is arranged on the second transmission path (42) is ordered to provide,wherein: - a computing device (6) configured to generate several mutually frequency-shifted optical transmission signals (81) based on the optical carrier signal (8) and to provide them to the transmitting device (15); - a signal provisioning device (82) of the transmitting device (15) configured to generate the electrical output signals (45, 48, 52, 56) based on the optical transmission signals (81) and to assign the electrical output signals (45, 48, 52, 56) to the respective transmission path (41 to 44) based on their respective frequencies; - the transmitting device (15) configured to transmit the first electrical output signal (45) with the first transmitting unit (46) and the second electrical output signal (48) with the second transmitting unit (49) simultaneously in a transmission process, characterized in that - the signal provisioning device (82) includes an optical filter unit (92) exhibits which is trained,to filter the optical transmission signals (81) based on their respective frequencies, wherein the optical filter unit (92) is controllable by means of an electronic filter control unit (95), and the signal provisioning device (82) comprises an optical distributor (94) configured to provide the respective optical transmission signal (81) to the transmission paths (41 to 44), and each transmission path (41 to 44) comprises an opto-electrical converter unit (84, 86, 88, 90) configured to convert the optical transmission signals (81) provided by the optical distributor (94) into the electrical output signal (45, 48, 52, 56) associated with the transmission path (41 to 44).

The invention relates to a method for determining the measuring capacitance (Cp) of a capacitive pressure measurement cell (1) that determines the pressure of a process medium within a specified pressure measurement range, wherein: an AC voltage signal is applied to a passive electronic filter (16) formed with the measuring capacitance (Cp) of the capacitive pressure measurement cell (1); the voltage of the input signal (Uref) on the input side upstream of the passive electronic filter (16) is ascertained and the voltage of the output signal (Umeas) on the output side downstream of the electronic passive filter (16) is ascertained; and the measuring capacitance (Cp) of the pressure measurement cell (1) is ascertained on the basis of at least one of the characteristics of the output signal (Umeas) with regard to the input signal (Uref).

The utility model relates to active power electronic filter and power electronic technical field discloses a kind of active power filter based on high-power IGBT single tube parallel driving, including multisignal fusion detection module, DSP control module, drive control module, IGBT power bridge arm module, auxiliary power module, support module and LCL filter module, the DSP control module is electrically connected with drive control module and support module respectively, the drive control module is electrically connected with IGBT power bridge arm module, the output end of switching power supply is electrically connected with the input end of multisignal fusion detection module, the IGBT power bridge arm module is electrically connected with LCL filter module.The utility model in, by adopting the design of IGBT single tube parallel, unnecessary intermediate connecting piece is reduced, equipment volume is effectively reduced, the problem such as the space occupancy big and installation inconvenience caused by complex structure is solved.

The application discloses a tumor detection device and method based on a diamond quantum sensor, and belongs to the technical field of biomedical detection. The device comprises a fiber laser, a fiber beam splitter, a fiber attenuator, a fiber ring, a filter, two photodetectors, a differential amplifier, an electronic filter, a computer, a signal generator, two microwave antennas and a fiber probe. The fiber probe comprises a fiber packaged in a plastic shell, a diamond quantum sensor containing NV color centers fixed at the end of the fiber, and a first microwave antenna integrated beside the fiber. The laser excites the diamond to generate fluorescence, and the signal generator drives the two microwave antennas to apply a microwave field. The dielectric properties of the sample to be measured will modulate the fluorescence intensity of the diamond by affecting the microwave field. The laser noise is eliminated through differential amplification and filtering technology, and the computer analyzes the fluorescence signal change to reconstruct the dielectric constant distribution of the sample, realizing non-invasive and high-sensitivity detection of tumors.

A laser radar system for measuring atmospheric greenhouse gases based on electro-optical modulation dual optical combs, the system comprises a continuous laser, a first coupler, a first electro-optical phase modulator, a second electro-optical phase modulator, a first acousto-optic frequency shifter, a second acousto-optic frequency shifter, a first multi-channel optical filter, a second multi-channel optical filter, a first radio frequency signal generator, a second radio frequency signal generator, a second coupler, a first optical fiber amplifier, a modulation chopper, a second optical fiber amplifier, a third coupler, a circulator, a telescope, an optical fiber attenuator, a fourth coupler, a photodetector, an electronic amplifier, an electronic filter, an analog data acquisition card, a trigger control unit and a data processing unit. The present invention utilizes the method of simultaneously emitting two optical combs with different repetition frequencies from the same absorption line of the greenhouse gas to be measured, and utilizes the dual optical comb spectrum detection technology to obtain the absorption information of multiple points of the atmospheric greenhouse gas absorption line, and finally achieves high-precision acquisition of the atmospheric greenhouse gas concentration while obtaining the atmospheric temperature and pressure information.

A programmable filter for electronic signals. The filter includes an input that splits power of the input signal along two paths, a first and second path that is phase shifted by ninety degrees in respect of the first path. The first and second path are each modulated to the optical domain, and provided as input to respective filter chains. The in-phase signal can be filtered by IIR or FIR optical filters with configurable operation, as well the shifted signal can be filtered by a second chain of IIR and FIR optical filters with configurable operation. Resulting output from each filter chain is recombined and demodulated from the optical domain. In this manner, the electronic filter can adopt any suitable impulse response, including impulse responses described with complex coefficients. Real parts can be configured by operation of the first filter chain and imaginary parts by operation of the second filter chain.

An electronic filter includes a high-pass section (110) and a low-pass section (120). The high-pass section includes at least one filter stage comprising an acoustic resonator (111) connected in series and an inductor (114) connected in parallel. The low-pass section includes at least one filter stage comprising an inductor (121) connected in series and an acoustic resonator (123) connected in parallel. The filter is useful for communication equipment covering the n79 5G frequency band.

An electronic filter with passive and active filters installed in parallel on an electrical network. The passive filter attenuates an unwanted harmonic on the network. The active filter detects remaining unwanted harmonic and generates a sinusoidal signal introduced to the network to cancel remaining harmonic.

1. The name of the design product: electronic filter core. 2. The use of the design product: the design product is installed in an electronic filter to purify and de-dust air. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

An adaptive electronic filter (200) includes a memristor-based filter circuit (201) for filtering an electrical input signal to obtain a filtered electrical signal. The adaptive electronic filter (200) further includes: a memristor-based subtractor circuit (202) for obtaining an error signal based on the filtered electrical signal and a reference signal; and an error minimization circuit (203) configured to provide adapted filter coefficients of the memristor-based filter circuit based on the error signal to minimize the error signal.

A filter monitor system (“FMS”) module is installed on the engine / vehicle and is connected to the filter systems, sensors and devices to monitor various performance parameters. The module also connects to the engine control module (“ECM”) and draws parameters from the ECM. The FMS module is capable of interfacing with various output devices such as a smartphone application, a display monitor, an OEM telematics system or a service technician's tool on a computer. The FMS module consists of hardware and software algorithms which constantly monitor filter systems and provide information to the end-user. FMS module provides necessary inputs and outputs for electronic sensors and devices.

The utility model discloses an intelligent formaldehyde removing instrument which comprises a machine body assembly, the machine body assembly comprises a machine body, the machine body is fixedly connected with a base, a set of air inlet holes are formed in the positions, corresponding to the base, of the four walls of the lower portion of the machine body, and the machine body is fixedly connected with a storage shell; the filter element assembly is arranged in the storage shell, the filter element assembly comprises an electronic filter element group and a high-activated carbon group which are arranged up and down, the storage shell is fixedly connected with a U-shaped plate, the high-activated carbon group is in contact with the U-shaped plate, the electronic filter element group comprises a filter frame, and an electronic filter element is mounted in the filter frame. The utility model relates to the technical field of air purification, in particular to an intelligent formaldehyde removal instrument. The technical problem to be solved by the utility model is to provide an intelligent formaldehyde removal instrument which is beneficial to formaldehyde removal, air odor purification and efficient dust removal.

An electronic filter for filtering multiple signals including a signal of interest and an other spectral content induces a desired frequency selective limiter response with activator signals. The activator signals have an approximately 180-degree phase difference and effectively cancel in a final combiner, leaving only the desired filter response.

An electronic filter is adapted for having a rolling material containing a leaf product rolled onto an exterior surface of the electronic filter where the electronic filter includes a liquid to be aerosolized and mixed with a smoke from burning the leaf product. The electronic filter can be pre-rolled into a cigarette with a leaf product and ready for consumption in a single use or can be adapted for multiple uses. The electronic filter includes a cylindrical body including a mouthpiece portion and a rolling material attachment portion, where the mouthpiece portion includes a mouthpiece having an orifice leading into the cylindrical body, and where the rolling material attachment portion includes an exterior surface of the cylindrical body adapted to have a rolling material rolled onto and sealed against the exterior surface. The electronic filter also includes a battery, storage tank and auto draw device.

A filter monitor system (“FMS”) module is installed on the engine / vehicle and is connected to the filter systems, sensors and devices to monitor various performance parameters. The module also connects to the engine control module (“ECM”) and draws parameters from the ECM. The FMS module is capable of interfacing with various output devices such as a smartphone application, a display monitor, an OEM telematics system or a service technician's tool on a computer. The FMS module consists of hardware and software algorithms which constantly monitor filter systems and provide information to the end-user. FMS module provides necessary inputs and outputs for electronic sensors and devices.

A water diverter device for use with a faucet includes an electrically operable valve assembly and a control module for controlling flow of cold water to a water filter.

The invention discloses an electronic filter, a negative hydrogen ion source neutron tube and a neutron generation method, and solves the problems that deflection magnetic steel is arranged in a glass tube and is closer to an accelerating electrode, the accelerating electrode is easy to discharge, the risk of damaging the neutron tube and a peripheral circuit is caused, the magnetic field intensity formed by the deflection magnetic steel cannot be freely adjusted, and the neutron generation efficiency is low. The electronic filter comprises a dumbbell-shaped collecting electrode and permanent magnet steel, the outer peripheral wall of the collecting electrode is sequentially sleeved with a non-magnetic electrode support and a magnetic conductive ring in the radial direction of the collecting electrode, permanent magnet steel mounting holes are formed in the electrode support, and the permanent magnet steel mounting holes are arranged in the permanent magnet steel mounting holes. The permanent magnet steel is located in the permanent magnet steel mounting holes, and the central axes of the two permanent magnet steel mounting holes are located on the axial split of the support body, are located in the same plane with the central axis of the collecting electrode body and are perpendicular to each other.

The invention relates to an electron detector (22) for an electron microscope (10) which generates a primary electron beam (16) in order to illuminate a sample (18), said electron detector having a tubular portion (32) with an internal volume (34). The primary electron beam (16) can pass through the internal volume (34) in order to illuminate the sample (18). The electron detector (22) has a detector element (26) which is arranged outside the tubular portion (32) and which is designed to detect electrons which, coming from the sample (18), move in a second direction (42) counter to the direction of the primary electron beam (16). A filter grid (28) is arranged in front of the detector element (26) in the second direction (42), said filter grid extending in a third direction (60) which runs transversely to the beam direction of the electron beam (16). The electron detector (22) has an insulator (36) which electrically insulates the filter grid (28) and the tubular portion (32) from one another such that the filter grid (28) can be at a negative electrical potential relative to the housing (24). A plurality of electrodes (48, 50, 52) made of an electrically conductive material are arranged outside the tubular portion (32) and are designed to produce a predominantly homogeneous electric field (56) between the filter grid (28) and the detector element (26). The electric field (56) has equipotential lines (66) which run in the third direction (60), predominantly parallel to the filter grid (28). The electrodes (48, 50, 52) are also designed to distort the electric field (56) in the region of the insulator (36) in a targeted manner such that the equipotential lines (66) have an inhomogeneous, predominantly falling profile in a defined region (68) between the filter grid (28) and the detector element (26). The defined region (68) extends in the second direction (42) proceeding from the filter grid (28) and in the third direction (60) proceeding from the tubular portion (32).

The invention discloses a liquid crystal adjustable electronic filter, an optical lens and photographic equipment. The liquid crystal adjustable electronic filter comprises a switching module, a polarizer module and a gradient mirror module which are sequentially arranged in a stacked mode. The polarizer module is rotationally connected relative to the switching module, and the gradient mirror module is fixedly connected relative to the switching module. The adapter module comprises an adapter ring main body, a plurality of movable clamping pieces, a caliber adjusting rotating disc and a radial force switching rotating disc; the multiple movable clamping pieces are arranged on the adapter ring body in an annular array mode, the caliber adjusting rotating disc drives each movable clamping piece to move in the radial direction of the adapter ring body, the radial force switching rotating disc is used for providing radial force for each movable clamping piece, and the radial force can be switched in direction based on rotation adjustment of the radial force switching rotating disc. According to the liquid crystal adjustable electronic filter, related mechanisms in the filter are converted and adjusted in a smooth mode, and the filter can be clamped on the inner walls or the outer walls of photographic equipment lenses of different models according to the actual situation.

The invention discloses a first electronic filter, the electronic filter comprises an outer frame, a liquid crystal assembly, a first connector and a second conductive part, the edge area of the outer frame is provided with a mounting part, the outer frame comprises a first frame body and a second frame body, and the first frame body and the second frame body are oppositely arranged; the liquid crystal assembly is arranged between the first frame body and the second frame body, the liquid crystal assembly comprises a first substrate, a second substrate located on one side of the first substrate and liquid crystal located between the first substrate and the second substrate, and a first conductive part is arranged in the edge area of the first substrate; the first connector is arranged in the mounting part; the second conductive part is electrically connected with the first conductive part and the conductive probe of the first connector. The production cost of the electronic filter can be reduced.