79 results about "Line filter" patented technology

The utility model provides a needle type on-line filtering device which comprises a filter element placing block, a first notch and a second notch which are horizontally and transversely arranged at the upper end of the filter element placing block; the sample loading frame is arranged on the horizontal side surface of the filter element placing block and can be used for placing at least one row of test tubes which are horizontally and transversely arranged with openings facing upwards; the vertical mechanical arm is provided with a lifting seat which is located on the upper portion and can ascend and descend and a guide seat which is located on the lower portion and fixed, the lifting seat is used for fixing the upper end of a sample loading needle, and the guide seat can allow the lower end of the sample loading needle to penetrate through; the filter element is stacked in the first notch of the filter element placing block and can be connected with the sample loading needle in a tight fit manner; and the horizontal longitudinal mechanical arm can drive the filter element placing block and the sample loading frame to horizontally and longitudinally move. Therefore, the functions that the sampling needle pricks the filter element at the first notch of the filter element placing block, filters and samples in the test tube of the sampling frame, and rows the filter element at the second notch of the filter element placing block can be realized.

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.

Disclosed is a display device. The display device may include: a display panel; a frame which is located in a rear of the display panel, and to which the display panel is coupled; a back cover covering a rear of the frame; a power supply board which is located between the frame and the back cover, and which is coupled to the frame; and a line filter which is located between the power supply board and the back cover, and which is coupled to the power supply board, wherein the line filter may include: an inductor; and a core which shields at least two side surfaces of the inductor.

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.

The present invention provides a microstrip bandpass filter, comprising a ceramic substrate, a fifth-order resonator, a first feeder interface and a second feeder interface, each resonator is composed of a microstrip line, and the fifth-order resonator comprises a first resonator, a second resonator, a third resonator, a fourth resonator and a fifth resonator arranged in sequence along the length direction of the ceramic substrate, the first resonator, the second resonator, the third resonator and the fourth resonator are all comb-shaped structures, and the third resonator is composed of a half-wavelength U-shaped microstrip line. By making the third resonator in the middle composed of a half-wavelength U-shaped microstrip line, the influence of the parasitic inductance in the through hole on the microstrip line filter is reduced, thereby improving the effect of the filter's low-frequency upward warping and high-frequency downward warping, so that the low-frequency rectangular coefficient of the stopband is improved, and the fluctuation in the passband and the insertion loss at the high frequency are reduced. At the same time, the remaining four resonators are in a comb-shaped structure, and the structure is more compact, so as to reduce the volume of the filter.

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 relates to the technical field of oil field steam injection boilers, in particular to a high-temperature and high-pressure saturated water on-line filtering device and an overheating steam injection boiler, which comprises a filter, a saturated water inlet pipe, a saturated water outlet pipe, an impurity discharge pipe, a saturated water inlet valve, a saturated water outlet valve and an impurity discharge valve, the shell is a cylindrical shell which is through up and down, the top of the shell is fixedly connected with an upper sealing head, the lower part of the shell is fixedly connected with a lower sealing head, the shell, the upper sealing head and the lower sealing head are enclosed to form a closed filtering cavity, a vertically arranged filtering sieve tube of which the lower end extends into the filtering cavity is arranged on the upper sealing head in a penetrating manner, and the lower end of the filtering sieve tube is closed. The device is reasonable in structure, impurities of saturated water discharged by the steam-water separation device can be filtered, so that a downstream pipeline, a valve and a nozzle are effectively prevented from being blocked, the running time rate of the overheating steam-injection boiler is effectively prolonged, and in addition, online pollution discharge and online cleaning can be achieved.

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.

Residual value generation system for use in a continuous-time stage of an analog-to-digital converter (ADC), wherein the system comprises: a forward path; a feedforward path comprising a quantizer; and one or more stub line filters at an input to the forward path and the quantizer.

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 multi-mode reconfigurable microstrip line filter circuit, the whole circuit comprises 13 components including three ports, a section of quarter-wavelength parallel coupling line, seven sections of quarter-wavelength microstrip lines and two grounding resistors except for a control switch, and the sharing rate of the circuit components in four modes is up to 69.2%. The multi-zero-point band-pass filtering function, the non-reflection band-pass filtering function, the multi-zero-point band-stop filtering function and the non-reflection band-stop filtering function are integrated in a single circuit framework, the integration level is remarkably improved through a circuit resource sharing strategy, and efficient performance balance and state switching are achieved by optimizing transmission zero point distribution and circuit matching characteristics. Meanwhile, by optimizing the PIN diode switching network and the absorption branch design, reflection in the switching process is effectively reduced, the system stability is improved, and good impedance matching in the full frequency band is ensured. In addition, a multi-zero distribution optimization strategy is adopted, the out-of-band rejection capacity is improved, and a better signal screening effect is achieved.

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 microstrip line filter comprises a PCB substrate, a reference ground plane and a filter body, the reference ground plane is located on the bottom layer of the PCB substrate, and the filter body is located on the top layer of the PCB substrate. The filter body comprises an input matching unit, a first filtering unit, a second filtering unit, a third filtering unit, a fourth filtering unit, a fifth filtering unit and an output matching unit; the input matching unit and the output matching unit are impedance microstrip lines with the same shape, and the input matching unit and the output matching unit are symmetrically distributed on the PCB substrate with the third filtering unit as the center. The microstrip line filter designed by the utility model is small in size, high in precision, easy to process, low in cost, large in power capacity and easy to integrate into a circuit; the microstrip line filter is small in insertion loss, small in reflection coefficient and excellent in performance; the microstrip line filter provided by the utility model is high in out-of-band rejection, especially high in out-of-band rejection at a frequency doubling position.

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.

A method incorporating the use of filtered values derived from a combination of horizontal and vertical edge and line filters 902 / 4 / 6 / 8 to determine 408 the indication of one or more weighting paramet

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 utility model relates to the technical field of radio frequency microwave circuits, in particular to a suspended line filter. According to the suspended line filter provided by the utility model, the circuit board technology is utilized, the five layers of substrates formed by pressing are arranged, the first preset area of the second substrate is set as the first hollow structure, and the second preset area of the fourth substrate is set as the second hollow structure, so that the inner layers of the five layers of substrates form a cavity; according to the suspended line filter, the first substrate is arranged in the cavity, and the filter transmission line is arranged on the third substrate in the cavity, so that the production cost of the suspended line filter is greatly reduced, the suspended line filter has the characteristics of low loss, miniaturization, high integration and reliable structure, and the substrates are laminated into a whole through lamination without additional assembly, so that the volume production of products is facilitated.

The utility model discloses a miniaturized RGB video data line filtering protection circuit and protection device. The miniaturized RGB video data line filtering protection circuit comprises an RGB video data interface module, a TEE differential mode filtering module and an ESD electrostatic protection module. The RGB video data interface module comprises a first video data interface unit, a second video data interface unit and a third video data interface unit; the TEE differential mode filtering module comprises a first TEE differential mode filtering unit, a second TEE differential mode filtering unit and a third TEE differential mode filtering unit; the first video data interface unit is electrically connected with the first TEE differential mode filtering unit, the second video data interface unit is electrically connected with the second TEE differential mode filtering unit, and the third video data interface unit is electrically connected with the third TEE differential mode filtering unit; the ESD electrostatic protection module is electrically connected with the first TEE differential mode filtering unit, the second TEE differential mode filtering unit and the third TEE differential mode filtering unit. According to the utility model, EM I suppression and EDS electrostatic protection of the RGB video data interface can be effectively realized, the circuit structure is simple, and PCB wiring is facilitated.