52 results about "Line filter" patented technology

The invention discloses a source load impact and system bearing life evaluation method and system, equipment and a medium, and relates to the technical field of traction power supply, and the method comprises the steps: collecting data to recognize impact, building a source load model, analyzing an impact diffusion path, evaluating system bearing, fusing multi-dimensional damage, calculating the residual life of the equipment, and automatically updating parameters. And generating a closed-loop regulation and control strategy. The system comprises a data analysis and dynamic modeling module, a bearing evaluation and conduction analysis module, a damage coupling and life prediction module and a parameter correction and strategy generation module. The traction impact time domain-frequency domain-topology integrated quantization is realized, and the problem of impact time-space diffusion assessment is solved. A life model is constructed, and multi-dimensional stress damage is accurately mapped. The micro-simulation and on-line filtering technology is utilized to ensure that model parameters are adaptively updated along with working conditions, and the problem of disjunction between evaluation and actual conditions is solved. The method supports side cloud cooperation and closed-loop pre-control, effectively improves the safety margin of the power grid, and delays the aging of equipment.

A display device including a display panel which comprises: a power supply board comprising a line filter. The line filter, to remove noise, comprising: a case connectable to a printed circuit board to thereby electrically connect the line filter to the printed circuit board; a magnetic core to be accommodated in the case; a core cover coupleable to the case to cover the magnetic core; a coil wound around an outside of the case and the core cover; and a separator coupleable to the case and the core cover. The separator comprises: a base; an isolating portion protruding from the base to be insertable into the case and the core cover so as to isolate a region in which the coil is wound; and a stepped portion protruding from the base and in contact with one surface of the case to separate the base from the printed circuit board.

Embodiments herein relate to filtration systems, such as air filtration systems. In an embodiment, a filtration system may be included having a control circuit and a filter chamber, where the filter chamber may be divided into isolated airflow segments. The isolated airflow section may include a first operational section, at least one further operational section, and at least one spare section. The control circuit may operate the filter system in a first mode of operation and a second mode of operation. The first operating mode includes the airflow control system directing airflow through the first operating section and the at least one further operating section and blocking airflow through the backup section. The second operating mode includes blocking air flow through one of the first operating section and the at least one further operating section, and maintaining air flow through the other operating section and the backup section.

Provided is a line filter that makes it possible to suppress a risk of breakage of a core while securing high differential mode inductance. A line filter (10) according to the present disclosure comprises an annular core (1) and a first magnetic body (2). When the direction in which an axis around which the annular core (1) is centered extends is considered the axial direction, the core (1) comprises an inner peripheral surface (1a), an outer circumferential surface (1b), an axial one-end-side end surface, and an axial other-end-side end surface. The first magnetic body (2) comprises a first plate-shaped portion (2a) and a first protruding portion (2c). The first plate-shaped portion (2a) is disposed inside the core (1) so that the main surface of the first plate-shaped portion (2a) follows the axial direction. The first protruding portion (2c) protrudes outward in the radial direction of the core (1) from one axial end (2b) of the first plate-shaped portion (2a). The tip of the first protruding portion (2c) is positioned on the outer peripheral surface (1b) side of the core (1) from the inner peripheral surface (1a) of the core (1).

The utility model provides an on-line filtering and monitoring device for transformer oil. The on-line filtering and monitoring device comprises a detection device and an oil inlet filter, an oil inlet of the oil inlet filter is communicated with an oil outlet of the transformer, an oil outlet of the oil inlet filter is communicated with an oil inlet of the detection device, and an oil outlet of the detection device is communicated with an oil return port of the transformer; according to the invention, the detection device is arranged in the transformer oil circulating filtering oil path, so that a set of circulating pipeline can be effectively reduced, and the convenience of field installation and maintenance is improved.

The invention relates to the technical field of microwave circuits, and discloses a stacked high-pass filter, which comprises a first filter circuit, a first through hole, a second filter circuit, a second through hole and an interconnection layer, and is characterized in that the first filter circuit and the second filter circuit are connected through the interconnection layer; the first through hole penetrates through the first filter circuit and is connected with the interconnection layer, and the second through hole penetrates through the second filter circuit and is connected with the interconnection layer; the dielectric constant of the first filter circuit is larger than a first preset value, the dielectric constant of the second filter circuit is smaller than a second preset value, and the first preset value is larger than the second preset value. The stacked high-pass filter provided by the invention has the characteristics of miniaturization, high suppression, ultra wide band and the like, realizes double-layer wiring high-pass filter circuit topology in a form of stacking the first filter substrate and the second filter substrate, and has the structural advantages of miniaturization and low cost of a microstrip filter and the performance advantages of high suppression and ultra wide band of a suspended line filter.

The application provides an online filtering device for a chromatographic flow path, and relates to the technical field of filtering equipment.The online filtering device comprises an upper connecting piece and a lower connecting piece, the upper connecting piece and the lower connecting piece are connected to form a shell, a cavity is formed in the shell, a filtering filter core is arranged in the cavity, the filtering filter core filters small particles and / or other impurities in a sample, and damage of the small particles and / or the other impurities to an instrument is avoided; a sample inlet channel is arranged in the upper connecting piece, a first connecting thread or a first pipe is arranged in the sample inlet channel, and the upper connecting piece is connected with a liquid chromatograph through the first connecting thread or the first pipe; a sample outlet is arranged in the lower connecting piece, a second connecting thread or a second pipe is arranged in the sample outlet, and the lower connecting piece is connected with an external element through the second connecting thread or the second pipe.The filtering device provided by the application can realize real-time and online filtering of fluid in a chromatographic flow path, and has universal connectivity at the front end and the rear end, so that the universal interchangeability in various liquid chromatograph analysis instruments is met.

The utility model relates to a kind of press type online filter, including shell, pressure column, sieve plate, lower seat, pressing piece and gasket, the gasket, the pressure column and the sieve plate are respectively arranged in the shell, the pressing piece and the lower seat are set in the both ends of the shell, the sieve plate is between the lower seat and the pressure column, the gasket is between the pressing piece and the pressure column, the sieve plate, the gasket, the pressure column, the sieve plate and the lower base form the wire hole of through in the inside. The press type online filter, normal sieve plate is not stressed, and only has contact with pressure column, when using, press pressing piece, gasket buffering makes gasket be pressed and force to pressure column, so that sieve plate is stressed, sealing wire pipe is welded in pressure column hole, so that filter can be connected equipment or part, and welding can withstand high pressure, this product makes assembly use more convenient, need not tool, more convenient use.

The invention discloses a filter based on a coupling line and an electronic device with the filter. The filter comprises an input port, an output port, a first coupling line pair and a second coupling line pair, wherein the first coupling line pair and the second coupling line pair are connected between the input port and the output port; one coupling line in the first coupling line pair is connected with the input port, and one coupling line in the second coupling line pair is connected with the output port; and at least one coupling line in the first coupling line pair is connected with at least one coupling line in the second coupling line pair. According to the filter based on the coupling line, the performance of high return loss and low insertion loss in a passband can be achieved, the performance of high out-of-band rejection outside the passband can be achieved, interference signals are effectively suppressed, and needed signals can be transmitted more efficiently.

Fluid containing contaminants may be filtered using a hydraulic control line filter for subsea high-pressure application comprising a housing (2), an end cap (1) disposed at a first end of the housing (2) where the end cap (1) defines a filter fluid connector which comprises a fluid inlet and a filtered fluid outlet, a first centralizer (4) disposed within the housing, a sump tube (3) disposed within the housing and centralized within the first centralizer where an outside diameter of the sump tube (3) and an inside diameter of the housing (2) define a sump volume annulus there-between, a filter centralizer ( 6), and a fluid filter ( 5) disposed in the housing and centralized within the sump tube (3) by the filter centralizer (6).

The invention discloses a broadband rectangular coaxial comb line filter based on an LTCC (Low Temperature Co-Fired Ceramic) process, which belongs to the technical field of wireless communication and comprises a ceramic base material Ce and a copper-based metal structure arranged in the ceramic base material Ce, the ceramic base material Ce is a ceramic block obtained by pressing a plurality of layers of ceramic slurry; a closed or semi-closed resonator structure is adopted, so that parasitic coupling between traditional strip line structure resonators is reduced, and stray and parasitic zero poles introduced by parasitism are eliminated; meanwhile, by adjusting the uniformity of the metal coverage rate in the horizontal direction, on one hand, vertical-direction precision error accumulation caused by the poor area copper-clad rate is reduced, the stability of product performance and the machining precision are improved, on the other hand, the product warping risk caused by the poor area copper-clad rate is effectively reduced, and the product quality is improved. Therefore, the technical problems of precision error and uneven product surface caused by local thickness difference of the ceramic substrate due to introduction of a local metal layer in the prior art are solved.

The invention relates to a drive system for sensitive devices, in particular for radio astronomical devices, the drive system comprising an electric motor, a converter configured to supply a drive power to the electric motor and to control a rotational speed and / or rotational position of the electric motor, a power supply line for providing the electric motor with a drive power, and a signal line for providing the converter with a signal indicating a measured rotational speed and / or rotational position of the electric motor, wherein the drive system further comprises a shaft grounding element for grounding a drive shaft of the electric motor and wherein at least one of the power supply line and the signal line further comprises a line filter unit for filtering electromagnetic interference (EMI) signals.

The present application relates to the technical fields of microwave circuit, and discloses a stacked high-pass filter, which comprises a first filter circuit, a first via, a second filter circuit, a second via and an interconnection layer, the first filter circuit and the second filter circuit are connected through the interconnection layer, the first via penetrates the first filter circuit and is connected with the interconnection layer, the second via penetrates the second filter circuit and is connected with the interconnection layer, the dielectric constant of the first filter circuit is greater than a first preset value, the dielectric constant of the second filter circuit is less than a second preset value, and the first preset value is greater than the second preset value.The stacked high-pass filter has the characteristics of miniaturization, high suppression and ultra-wideband, and realizes the high-pass filter circuit topology of double-layer wiring in the form of stacking the first filter substrate and the second filter substrate, and has the structural advantages of miniaturization and low cost of the microstrip filter and the performance advantages of high suppression and ultra-wideband of the suspended line filter.

The invention discloses a delay line type filter based on an optimized single-phase transducer, which comprises an electrode layer, a piezoelectric material and a high-sound-velocity substrate, and is characterized in that the electrode layer is a patterned interdigital electrode which is periodically distributed; the graphical periodically-distributed interdigital electrodes are composed of two groups: one group is an input transducer, and the other group is an output transducer; the two groups of transducers are arranged in a mirror image manner, namely, the periodic directions are strictly aligned, and 1-1000 wavelengths are arranged between the two groups of transducers at a certain distance; according to the invention, the delay linear filter formed by the transducer has smaller insertion loss; meanwhile, the structure provided by the invention is suitable for all piezoelectric materials and acoustic modes, and in the LiNbO3-SiC material, the LiNbO3-SiC material has a Loff wave mode with a larger electromechanical coupling coefficient, so that the insertion loss can be reduced.

The utility model discloses integrated carbonization line filter equipment, including filter box, and the water inlet pipe and the water outlet pipe are penetrated and are fixed on filter box, and the filter box upper end is open, and the first sleeve pipe and the second sleeve pipe are fixed to the filter box inner wall bottom surface, and the first sleeve pipe and the second sleeve pipe correspond. The utility model discloses the structure design of first purification pipe and first sleeve pipe screw connection, second purification pipe and second sleeve pipe sliding fit, and cooperation limiting mechanism and locking mechanism can realize quick dismounting, when needing to replace filter core, first nut and first bolt in locking mechanism are loosened first, make the support of limiting mechanism slide on the guide rod, drive sealing sleeve and the second purification pipe connected therewith to remove to the direction away from first purification pipe, remove the adhering state of both, then rotate first purification pipe, make it from the thread connection of first sleeve pipe spin out, can take out first purification pipe and carry out filter core replacement, convenient to use.

The application discloses a kind of based on fracture line constraint airborne point cloud fast filtering method, comprising the following steps: (1) collecting the airborne laser point cloud data in measurement area, and extracting fracture point according to each point cloud and its neighborhood point average curvature value, elevation value;(2) obtain the scanning line containing point cloud data;(3) for each scanning line, coarse filtering is carried out to filter out the point cloud belonging to non-ground point and ground object point on scanning line and extract scanning center and reference point;The scanning center point is the leftmost point cloud after coarse filtering scanning line, and the reference point is the nearest point cloud to scanning center point;(4) for each scanning line, fine filtering is carried out;(5) using quadric surface fitting method to filter out the point cloud belonging to non-ground point in measurement area, and obtain the final filtered point cloud.The application constructs the scanning line filtering model considering fracture line constraint, is suitable for a variety of complex scenes and considers the influence of elevation mutation, noise point, improves the completeness and accuracy of ground point extraction.

An information processing device according to the present disclosure includes a first processing unit for executing processing by a first network from among the first network, which includes an input layer, and a second network, which includes an output layer, the first and second networks being obtained by splitting a network that processes input image data using an n-pixel × n-line filter (where n is an integer of 2 or more) at an intermediate layer between an N-th layer and an (N+1)-th layer (where N is an integer of 2 or more). The first processing unit causes the first network to perform the processing on the input image in units of n lines, and outputs the result of the processing line by line to the second network.

The application discloses a four-mode reconfigurable microstrip line filter integrated with reflection-free and multi-zero-point response, which adopts a single microstrip circuit topology with left-right symmetry and is composed of an upper branch band-pass filter circuit, a T-shaped joint structure, a pair of cross-shaped absorption branches, a pair of coupled line absorption branches, five groups of switch pairs and input and output ports; the coupled lines at the two ends of the upper branch band-pass filter circuit are connected with the ground through the switch pair connection ports and the T-shaped joint structure, and the absorption branches are connected with the ports in parallel through the switches; the four-mode switching of double-band rejection, full-band reflection-free band-pass, full-band reflection-free band-stop and multi-transmission zero-point band-stop is realized in the same circuit through the on-off control of the switches; the integration degree is improved; the reflection-free characteristic of the band-stop energy dissipation is realized by relying on the resistance-loaded absorption branches; the frequency selectivity and the band-stop suppression capability are strengthened in combination with the multi-transmission zero points; and the problems of low resource reuse rate, lack of reflection-free characteristic and uneven multi-mode performance of the traditional structure are solved.

A display device is disclosed. The display device includes a power supply and a display. The power supply includes: a first line filter connected to an external alternating current (AC) power source and including a first common mode choke and a first capacitor connected in parallel to the first common mode choke; a second line filter connected to the first line filter and including a second common mode choke and a second capacitor connected in parallel to the second common mode choke; a third capacitor having one end connected to a neutral of the first capacitor and the other end connected to a frame ground; an AC / DC block connected to the second line filter; a fourth capacitor having one end connected to a neutral of the second capacitor and the other end connected to the frame ground; and a DC / DC block connected to the AC / DC block and configured to provide driving power to the display connected to the power supply.

Printed-line filter designs with wide bandwidth, low insertion loss, good stopband attenuation, independent control of low-side and high-side attenuation, and high selectivity. Embodiments include a printed-line pseudo-HPF design with such characteristics, and a printed-line cascaded BPF design which has approximately the same insertion loss as an equivalent single printed-line BPF filter but with greater ultimate stopband attenuation. One embodiment includes a printed interdigitated-line BPF including at least one coupling enhancement strip. Another embodiment includes a cascaded BPF including a low-pass filter and an electrically coupled printed interdigitated-line BPF including at least one coupling enhancement strip. The printed interdigitated-line bandpass filter includes a set of interdigitated resonator sections, each adjacent pair of interdigitated resonator sections being separated by an associated gap, wherein the at least one coupling enhancement strip is spaced from an associated gap separating an adjacent pair of interdigitated resonator sections in the set of interdigitated resonator sections.

The invention discloses an ultra-wide stop-band low-intermodulation suspended strip line filter band stop sheet, which relates to the technical field of filters, and comprises a filter shell, the filter band stop sheet is suspended in the filter shell through a band stop sheet medium, and a plurality of groups of filter resonant columns are fixedly arranged in the filter shell. The joint inner core is fixedly connected with the band stop sheet medium; the joint inner core filter is in air coupling with the resonant column to realize a filtering effect; according to the ultra-wide stopband low-intermodulation suspended strip line filter band-stop sheet, the distance between the joint inner core and the filter resonant column is adjusted through the filter cavity, the filter band-stop sheet, the band-stop sheet medium, the filter resonant column and the filter joint, so that the requirements of frequency, loss suppression and the like of a required product are met; traditional accessories such as a large cavity, a machining resonance column and a flying inductor are omitted, the size and the occupied area of the filter are reduced, and the assembly process of the filter is simplified.

The utility model relates to the field of furfural determination, in particular to a device for rapidly determining furfural in transformer oil. The device is provided with a waste liquid port and an air inlet, and comprises an injection assembly, a selector valve, a sample tube, a standard oil sample container, an eluent container, an extract container, a sample injection valve, a chromatographic column, a column oven, an LED detector, an on-line filter and a battery, the selector valve is provided with a common port and eight selection ports which are selected to be independently communicated with the common port through adjustment. The injection assembly comprises a high-pressure injection pump and a buffer ring, and the high-pressure injection pump, the buffer ring and a common port of the selector valve are sequentially communicated; the sample injection valve is a two-position six-way valve, is provided with six ports and two phases, and is internally provided with a quantitative loop; the on-line filter is communicated with the sample injection valve; a chromatographic column communicated with the sample injection valve is arranged in the column oven, and the column oven is provided with a heating sheet for heating and a thermocouple for detecting temperature; and the LED detector is communicated with the chromatographic column. The device has the advantages of high integration level, light weight, automatic measurement, labor cost saving and redundancy waste avoiding.

Provided is a multiple-output power supply device in which current does not become unbalanced in line filter circuits included in each of a plurality of power supply sections. A multiple-output power supply device 10A has a first power supply section 20 that outputs a first direct-current voltage, a second power supply section 30A that outputs a second direct-current voltage, and a first switch 11, and is capable of operating in a first mode in which both the first direct-current voltage and the second direct-current voltage are output and a second mode in which only the second direct-current voltage is output. The second power supply section 30A includes a second switch 38 provided on a path (second low-potential-side direct-current line 36) of current from a second voltage conversion circuit 34 to a second line filter circuit 31. The first switch 11 is configured to be in a closed state in the first mode and in an open state in the second mode. The second switch 38 is configured to be in an open state in the first mode and in a closed state in the second mode.

The present invention relates to a microstrip line filtering radiation oscillator, a filtering radiation unit, and an antenna. The microstrip line filtering radiation oscillator includes a substrate. A plurality of first metal sheets that are parallel to each other and are arranged at intervals are provided on a front surface of the substrate, a plurality of second metal sheets that are parallel to each other and are arranged at intervals are provided on a back surface of the substrate, and the first metal sheets and the second metal sheets are correspondingly staggered and coupled by a coupling part running through the substrate. The microstrip line filtering radiation oscillator of the present invention has functions of signal radiation and interference suppression. The filtering radiation unit includes at least one oscillator as described above and can be used in conjunction with a high-frequency radiation unit, to radiate a high-frequency signal and a low-frequency signal simultaneously. The antenna of the present invention includes at least one filtering radiation unit as described above, and can transmit a low-frequency signal and a high-frequency signal simultaneously, thereby effectively improving the integration of the antenna and reducing the volume of the antenna.

The utility model discloses a filtering device controller convenient to adjust, and relates to the technical field of filtering. The bearing part comprises supporting legs, a bearing cylinder arranged at the tops of the supporting legs, an electromagnetic valve penetrating through the bottom of the bearing cylinder, a feeding port formed in one side of the top end of the bearing cylinder, a flow guide plate arranged in the bearing cylinder, and a supporting arc plate arranged in the bearing cylinder and corresponding to the lower portion of the flow guide plate; the filtering part comprises a containing assembly arranged in the bearing cylinder, an adjusting assembly arranged in the containing assembly, a cleaning assembly arranged above the adjusting assembly and a power assembly arranged in the cleaning assembly. According to the utility model, the filter plates and the lining filter plates are mutually staggered to form apertures with different sizes, so that the purpose of adjusting the filtering requirement is achieved, and the problem that the application range of the existing filter device is small is solved.

The invention discloses an online filter cake thickness monitor and a measuring method thereof, and relates to the field of filters, the technical scheme is that the online filter cake thickness monitor comprises a main pipe mounted on a filter tank body and a movable rod located in the main pipe and capable of stretching out and drawing back along the interior of the main pipe, a measuring plate is mounted on the surface of the movable rod, and a magnet is arranged on the measuring plate; the main pipe is internally provided with a driving structure for driving the movable rod to stretch out and draw back, the main pipe is internally provided with a detection module, and the tail end of the main pipe is provided with an electrical control module for controlling the movable rod to stretch out and draw back. On-line real-time monitoring of the thickness of the filter cake is achieved, manual regular inspection or off-line sampling is not needed, and timeliness and accuracy of monitoring are improved.

The utility model provides a strip line filter. The strip line filter comprises a top-layer PCB, a middle-layer PCB and a bottom-layer PCB, micro-strip lines are laid on the bottom layer PCB and the middle layer PCB. The microstrip line of the bottom PCB comprises a bottom input straight-through line and a bottom output straight-through line which are located at the two ends of the bottom PCB in the length direction respectively and extend from the ends to the middle. The microstrip line of the middle-layer PCB comprises a middle input straight-through line and a middle output straight-through line which are located at the two ends of the middle-layer PCB in the length direction respectively and extend towards the middle from the positions away from the ends by a preset distance, and a pair of L-shaped coupling lines symmetrically arranged between the middle input straight-through line and the middle output straight-through line. The plurality of linear coupling lines are arranged between the L-shaped coupling lines in a staggered and spaced manner; and the L-shaped coupling line and the linear coupling line form a coupling part. According to the strip line filter, the environmental restriction of a microstrip filter is eliminated, the strip line filter has a high rectangular coefficient, and higher suppression degree is realized under the same volume.

The invention discloses a five-mode reconfigurable microstrip line filter which adopts a single symmetrical microstrip line unified topology and is composed of four sections of quarter-wavelength parallel coupling lines, seven sections of quarter-wavelength microstrip lines and seven PIN switches. On the premise of not changing a main body circuit frame, flexible reconstruction of five band-pass filtering modes, namely, a multi-transmission-zero-point high-isolation dual-frequency band-pass mode, a three-frequency-band band-pass mode, a multi-zero-point wide-frequency band-pass mode, a double-side high-suppression dual-frequency band-pass mode and a multi-zero-point high-isolation dual-frequency band-pass mode, is realized on the same hardware platform by controlling the on and off states of the PIN switches.

The product is a line filter used to suppress common-mode noise, and includes a terminal block having terminal pins.

The present disclosure relates to a system for sourcing and sinking power. The system may have a bi-directional system of electrical components configured for placement in electrical communication with a power source and a load. The bi- directional system may further be configured to source AC and DC power from the power source to the load and sink AC and DC power from the load to the power source. The system may further include a high frequency isolation transformer. In some embodiments, the system may have four input / output channels. The bi-directional system of electrical components may include a line filter configured to reduce harmonic content, a line converter configured for converting between AC power and DC power, a load converter configured for converting between AC power and DC power, and a load filter configured to reduce harmonic content.