38 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 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 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.

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.

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 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 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 utility model discloses an online filter of a PTA (pure terephthalic acid) device, and relates to the technical field of filter equipment. The PTA device online filter comprises a filter barrel, a sealing cover is arranged at the top opening end of the filter barrel, a liquid inlet pipe is connected to the position, close to the bottom end, of the outer wall of the filter barrel in an inlaid mode, a liquid outlet pipe is connected to the top end of the sealing cover in an inserted mode, and a plurality of through holes are annularly formed in the outer wall of the liquid outlet pipe; a backing ring is arranged at the position, close to the top end, of an inner cavity of the filtering barrel, a filtering assembly is arranged on the backing ring, and the bottom end of the liquid outlet pipe extends to an inner cavity of the filtering assembly; a cleaning assembly is arranged on the surface of the bottom of the filtering barrel, the top end of the cleaning assembly penetrates through the surface of the bottom of the filtering barrel and extends to an inner cavity of the filtering barrel, equipment does not need to be disassembled in the whole process, the maintenance cost of the equipment is reduced, and the convenience of later maintenance of the equipment is improved.

A method for operating a drive unit (10) for a vehicle (70) and a drive unit (10) for a vehicle (70) are provided. The drive unit (10) comprises at least one inverter (12), a line filter (50) associated with the inverter (12) and configured to attenuate electromagnetic interference, an electric motor (14), and a control device (36) coupled to the inverter (12) and the electric motor (14). At least one operating parameter of the inverter (12) is determined or received by the control device (36). The temperature of the line filter (50) is estimated by the control device (36). The estimated temperature of the line filter (50) is compared with a first predefinable temperature threshold value by the control device (36).At least one operating parameter of the inverter (12) is adjusted by the control device (36) if the estimated temperature of the network filter (50) exceeds the first predefinable temperature threshold.

The application discloses a kind of wideband rectangular coaxial comb line filter based on LTCC process, belong to wireless communication technical field, including by ceramic base material Ce and copper-based metal structure in ceramic base material Ce;The ceramic base material Ce is the ceramic block obtained by pressing multilayer ceramic slurry;Closed or semi-closed resonator structure is used to reduce the parasitic coupling between traditional stripline structure resonators, eliminate the stray and parasitic zero and pole introduced due to parasitic;At the same time, by adjusting the uniformity of metal coverage in the horizontal direction, on the one hand, it reduces the accumulation of vertical direction precision error caused by the difference in copper coverage rate in the region, improves the stability and processing precision of product performance, on the other hand, it effectively reduces the warping risk of the product caused by the difference in copper coverage rate in the region, thereby solving the technical problems of the existing technology that the introduction of local metal layer causes the thickness difference of the ceramic substrate, which in turn causes precision error and uneven product surface.

A gateway controls a portion of lighting fixtures within a lighting system in response to a first digital signal and comprises a power input port to receive AC power, a power line filter to filter electrical noise from the received AC power, a power output port to output the filtered AC power to the portion of lighting fixtures, an input signal port to receive the first digital signal, an output signal port to pass the received first digital signal to a second gateway, a local controller, a first transceiver coupled to the input signal port to receive the first digital signal, and a second transceiver coupled to the power output port to couple the second digital signal to the power output port.

The utility model discloses impressed current cathodic protection power supply equipment, which relates to the technical field of jacket protection and comprises a main circuit system and a control system. The main circuit system comprises an AC-DC inlet wire rectification module and a DC-DC voltage regulation module. The input end of the AC-DC incoming line rectification module is connected with a three-phase alternating current power supply, and outputs a high-voltage direct current with a set boost value through the incoming line filtering unit and the three-phase APFC rectification boost and power factor correction unit based on the IGBT and the PWM in sequence. The input end of the DC-DC voltage regulation module is connected with the high-voltage direct current, and the direct current is output to an anode bar after being subjected to stable voltage regulation through a direct current filtering unit, a high-frequency inversion unit, a high-frequency voltage regulation unit, an output rectification unit based on an MOS (Metal Oxide Semiconductor) tube, an output filtering unit and an output switch unit in sequence, so that impressed current cathode protection on the jacket is realized; according to the utility model, the inherent problems of low power factor and high harmonic pollution of the traditional three-phase rectification can be solved, and the problem of low power efficiency of the traditional rectification circuit can be solved.

The invention belongs to the technical field of wireless communication, and particularly relates to a multi-layer board strip line filter. Comprising a first core plate, a first bonding layer, a second core plate, a second bonding layer, a third core plate, a third bonding layer and a fourth core plate which are sequentially stacked, the first core plate comprises a first metal layer and a second metal layer which are positioned on two opposite sides, the second core plate comprises a third metal layer and a fourth metal layer which are positioned on two opposite sides, the third core plate comprises a fifth metal layer and a sixth metal layer which are positioned on two opposite sides, and the fourth core plate comprises a seventh metal layer and an eighth metal layer which are positioned on two opposite sides; wherein at least two of the second metal layer, the third metal layer, the fourth metal layer, the fifth metal layer, the sixth metal layer and the seventh metal layer respectively form a first planar strip line filter, a second planar strip line filter and a third planar strip line filter which are connected in parallel. By adopting the mode, the performance during use can be enhanced, and the reliability and the stability during use can be improved.

The utility model relates to the technical field of on-line filters, and provides a transfer tank of an on-line filter, which comprises a transfer tank assembly and a transfer tank, the movable assembly comprises a sliding groove, a through hole, a first filtering barrel, a liquid inlet pipe, a fixed rod, a telescopic spring, a movable rod, a connecting rod and a movable pipe, and the sliding groove is formed in the upper end of the tank body. The device has the advantages that the movable rod is pulled outwards to drive the connecting rod to move upwards, the connecting rod moves upwards to drive the movable pipe to move upwards and move out of the interior of the through hole, the through hole does not block the movable pipe, then the through hole pushes the liquid inlet pipe, and the liquid inlet pipe rotates along the sliding groove; when the liquid inlet pipe rotates to the position of the other group of through holes, outward pulling of the movable rod is stopped, and the movable pipe moves downwards to enter the through holes under the elastic action of the telescopic spring, so that the interior of the first filtering barrel of the previous group can be cleaned, and shutdown is not needed when the first filtering barrel is cleaned.

To provide a line filter capable of suppressing a possibility for a core to be broken while securing high differential mode inductance.SOLUTION: A line filter 10 includes an annular core 1 and a first magnetic body 2. When a direction in which a shaft rotated by the annular core 1 extends is a shaft direction, the core 1 is provided with an inner peripheral surface 1a, an outer peripheral surface 1b, one end side end surface in the shaft direction, and an end surface on the other end surface in the shaft direction. The first magnetic substance 2 is provided with a first plate-like portion 2a and a first projection 2c. The first plate-like portion 2a is placed inside the core 1 so that a principal surface of the first plate-like portion 2a goes along the shaft direction. The first projection 2c protrudes radially outside of the core 1 from one end 2b in the shaft direction of the first plate-like portion 2a. An end of the first projection 2c is located on the outer peripheral surface 1b side of the core 1 from an inner peripheral surface 1a of the core 1. The first plate-like portion 2a and the inner peripheral surface 1a of the core 1 are separate.SELECTED DRAWING: Figure 5

The invention discloses an on-line filtering and sampling device of a heat conduction oil circulating system, and relates to the technical field of heat conduction oil sampling, the on-line filtering and sampling device comprises an oil guide pipe, the outer wall of the oil guide pipe is fixedly connected with a filtering seat, the top end of the filtering seat is provided with a top cover, the bottom end of the top cover is fixedly connected with a pressing rod, and the on-line filtering and sampling device further comprises a partition plate, a filtering cylinder, a sampling mechanism and a mounting mechanism. By arranging the sampling mechanism, when the heat conduction oil circulating system normally operates, automatic and isolated sampling can be carried out on oil ways on the two sides (namely before filtering and after filtering) of the filtering base. The first motor drives the pressing plate to move downwards, the vertical rod drives the movable plate to act, the circular groove is communicated with the sampling pipe while an oil path on the side is cut off, an oil sample at the position flows out accurately, shutdown or manual intervention is not needed in the whole process, the sampling efficiency and the operation safety are greatly improved, and a reliable sample is provided for evaluating the filtering effect in real time.