67 results about "Detection filter" patented technology

The utility model discloses a microbial limit detection filter, and belongs to the technical field of filtering equipment. The utility model solves the problem that the waste liquid in the negative pressure channel easily flows back to the filter head to pollute the filter membrane at the filter head. The filter comprises a shell, at least one filter head is arranged on the shell, the filter head is connected with a suction mechanism, the suction mechanism comprises a negative pressure mechanism and a first pipeline communicated with the filter head, a first connector is arranged on the first pipeline and detachably connected with one end of a second pipeline, the negative pressure mechanism is connected with a third pipeline, and the third pipeline is connected with the negative pressure mechanism. The third pipeline is provided with at least one second connector, the other end of the second pipeline is detachably connected with the second connector, the first pipeline is provided with a check valve, and the negative pressure mechanism is connected with the liquid discharging pipe. According to the utility model, the negative pressure channel is arranged in a sectional type, and the check valve is arranged on the first pipeline, so that the probability that the filter membrane is polluted by waste liquid is reduced.

The invention provides a security fault detection method based on an important data protection mechanism, and belongs to the technical field of networked system fault diagnosis. The method comprises the following steps: step 1, establishing a T-S fuzzy networked system model with time varying and time delay; 2, designing an important data protection mechanism based on coding and decoding; 3, constructing a fuzzy fault detection filter structure by using the available measurement information to obtain a fault detection system; step 4, giving a discrimination basis for ensuring that the fault detection system is bounded in random limited time and has dissipation performance in the form of a linear inequality group, and solving the linear inequality group to obtain a filter gain; 5, substituting the filter gain into the fault detection filter to generate a residual error; and step 6, calculating an evaluation function and a threshold value for generating a residual error, and judging whether a fault occurs or not. According to the method, the influence of attacks on important data can be actively defended, the data transmission security is improved, and network communication resources are saved; and the calculation burden can be effectively reduced.

The utility model discloses a gas detection filter, which relates to the technical field of gas detection, and comprises a shell, frames penetrate through the two sides of the outer surface of the shell, dust screens are connected in the two frames, the outer surfaces of the two frames are provided with limiting grooves, and the outer surface of the shell is respectively provided with a torsion spring shaft and a fixing plate. And the torsion spring shaft is sleeved with a limiting strip. Through the arrangement of the frame, the limiting strip, the torsion spring shaft, the limiting groove and the fixing plate, when the dustproof net needs to be replaced, only the limiting strip needs to be rotated to slide out of the limiting groove to finish limiting of the frame, meanwhile, the limiting strip is limited through the fixing plate, and the situation that the torsion spring shaft is damaged due to the fact that the rotation angle of the limiting strip is too large is avoided; then the frame is pulled out of the shell, and then the dustproof net is pulled out of the frame, so that the disassembly work can be completed; and meanwhile, limiting and fastening are achieved, and operation is easy, convenient, fast and time-saving and labor-saving.

The utility model relates to laser welding technical field especially relates to a kind of laser welding protective gas pressure detection filtering device, including air inlet pipeline, air inlet pipeline gas inlet port is equipped with pressure controller, air inlet pipeline gas outlet side is equipped with solenoid valve, air inlet pipeline gas outlet port is equipped with pressure sensor, separator and filter are successively installed in air inlet pipeline middle part, air inlet pipeline gas inlet side, separator and filter connection side and filter gas outlet side are all equipped with differential pressure gauge. By making protective gas successively through separator and filter, thereby double interception filtering to the impurity in protective gas, avoid impurity and molten metal reaction to weld defect, etch welding head lens, increase maintenance cost, and avoid impurity block pipeline, cause pressure fluctuation, wherein the setting of differential pressure gauge, the pressure value after protective gas passes through separator and filter is monitored respectively, avoid filter being blocked by impurity and unknow, affect air intake, and then lead to pressure fluctuation.

The invention relates to the technical field of integrated circuits, and discloses a phase-locked loop circuit, which comprises a time-to-digital converter for receiving a reference clock, a feedback clock and a frequency clock, the sampling module is used for counting and sampling a frequency clock according to a reference clock and a feedback clock and calculating frequency deviation information between the reference clock and the frequency clock and phase deviation information between the reference clock and the feedback clock; the digital frequency and phase detection filter is used for carrying out weighted integration on the frequency deviation information and the phase deviation information and generating a control signal; the digital control oscillator is used for generating a frequency clock according to the control signal; and the feedback frequency divider is used for carrying out frequency division on the frequency clock and generating a feedback clock. According to the invention, the frequency deviation information and the phase deviation information are jointly used as the input of the integral path in the digital phase frequency detection filter, so that the phase frequency detection function under the digital phase-locked loop system is realized.

The embodiment of the invention discloses a multi-band ultrahigh frequency detection device, a multi-band ultrahigh frequency detection method and a computer readable storage medium. The multi-band ultrahigh frequency detection device comprises an ultrahigh frequency sensor, a front-end processing module and an acquisition module. The ultrahigh frequency sensor is used for collecting an electric signal sent by a measured object. The front-end processing module comprises a band-pass filter circuit and a detection filter circuit, and the band-pass filter circuit is used for separating the electric signal into multiple sub-band signals of different wavebands; the detection filter circuit is used for collecting effective content in each sub-band signal to obtain a detection signal. And the acquisition module is used for converting the multiple paths of detection signals into ultrahigh-frequency acquisition information and uploading the ultrahigh-frequency acquisition information, and the ultrahigh-frequency acquisition information is used for representing the working condition state of the detected object. Therefore, the ultrahigh frequency acquisition information under different frequency bands can be effectively acquired, and synchronous acquisition of the ultrahigh frequency acquisition information of multiple independent frequency bands can be realized.

Various systems and methods for scheduling filter maintenance of an imaging system are described herein. An example method for scheduling filter maintenance of an imaging system includes detecting, via a sensor, that a pressure differential across a filter is below a threshold, providing, via a display of the imaging system, an alert to an operator that the pressure differential across the filter is below the threshold, and scheduling filter maintenance based on the pressure differential being below the threshold.

A filtering pipeline has been created that filters videos / audios for deepfake detection. The filtering pipeline applies a series of filtering operations that begins with filtering video / audio based on contextual content, such as keywords on a webpage proximate to a URL that links to the media). The filtering pipeline then filters based on voice detection and obtains transcripts for the remaining videos. Topic-based filtering is performed with the transcripts. If media has not been filtered out, then the filtering pipeline prompts a LLM to classify the media as promoting misleading information based on the transcript. If media has not been filtered out, then deepfake detection is run on the media.

The application discloses a substation robot inspection identification method and system, comprising: a substation equipment real-time video stream is collected by an inspection robot camera, images are intercepted at an interval of 1 frame per several seconds, and through a definition detection filtering fuzzy invalid frame, a to-be-identified image is obtained; the to-be-identified image is input into a multimodal large model, equipment type classification is completed, and the equipment types include a pointer instrument, a multi-row digital instrument, a power cabinet and an infrared image; a differentiated processing procedure is executed according to different equipment types, and reading, state or characteristic information of each equipment is output; a standardization JSON format record is generated by integrating a frame time stamp, an equipment type identifier, an identification result and an identification state, and is stored. Through the multimodal large model, accurate classification of various equipment types is realized, differentiated processing procedures are designed for different equipment, equipment information such as a pointer instrument, a multi-row digital instrument, a power cabinet and an infrared image can be efficiently identified, and the application is suitable for a complex equipment environment of a substation.

The application provides a filter sterilization module, a cell culture system and a filter sterilization method, comprising a filter and a temperature detection element, the filter is provided with a first connecting end, a second connecting end and a third connecting end which are communicated with each other, the first connecting end is communicated with a first control valve and a second control valve, the second connecting end is communicated with an input end of a third control valve and a fourth control valve, an output end of the third control valve is communicated with a first hydrophobic valve, the third connecting end is communicated with a fifth control valve and a second hydrophobic valve in sequence, and the temperature detection element is used for detecting the temperature in the filter. The filter can be sterilized without being disassembled from the cell culture system, the risk of secondary pollution in the process of sterilization, transfer and installation of the traditional filter is avoided, damage caused by collision in the process of disassembly, cleaning, sterilization and transfer is avoided, and the reliability and service life of the filter sterilization module and the cell culture system are improved.

The present invention aims to provide a monitoring and control system for a centrifuge that can quickly detect a decrease in separation performance by detecting a sudden increase in solid content, thereby preventing equipment malfunction. The system comprises a centrifuge 2 in which a liquid to be treated flows in from an inlet 20 and is introduced into the interior, a separation plate is rotated by an electric motor 21, the introduced liquid to be treated is separated into sludge and separated liquid, and the separated liquid is discharged to the outside from a separated liquid discharge section 22, the separated liquid discharged from the separated liquid discharge section 22 is introduced into a separated liquid line 3 equipped with at least a back pressure valve 31 and a pressure gauge PG, a portion of the separated liquid introduced into the separated liquid line 3 is guided to a detection line 4 equipped with at least a detection filtering unit 40, a constant flow valve 41 and a flow meter 42 by adjusting the back pressure valve 31, and when it is determined that the value measured by the flow meter 42, which measures the flow rate adjusted by the constant flow valve 41 provided downstream of the detection filtering unit 40, is below a predetermined flow rate lower limit threshold, the electric motor 21 is stopped.

The present application provides an appearance inspection device that can acquire information for properly detecting a defective portion of an appearance image of an object even when the roughness of a surface varies depending on the object. Specifically, the appearance inspection device (100) includes an image acquisition unit (5) that acquires an appearance image (10) of a semiconductor wafer (U), and a processing unit (1) that generates a detection image (10c) for detecting a defective portion (12) by performing detection filtering processing on the appearance image (10), the processing unit (1) being configured to generate the detection image (10c) corresponding to the roughness of a surface (S) of the semiconductor wafer (U) captured in the appearance image (10) by performing detection filtering processing that reduces the detection sensitivity to the defective portion (12), the defective portion (13) as the roughness of the surface (S) of the semiconductor wafer (U) captured in the appearance image (10) becomes greater.

The utility model belongs to the technical field of detection filtering, and particularly relates to a filtering device for quality safety detection of agricultural products, which comprises a box body, a feed port and a discharge port, the feed port is mounted at the top of the box body, the discharge port is mounted at the lower end of the right side of the box body, and the filtering device is arranged in the box body and comprises a cleaning unit, a crushing unit and a stirring unit. According to the filtering device for agricultural product quality safety detection, by arranging a cleaning unit and starting a pump body, water in a water tank is sprayed out of a spray head through an annular pipe along a connecting pipe to flush the inner wall of the box body, meanwhile, a telescopic piece is started, and a connecting rod is driven to move up and down through pushing of the telescopic piece, so that a first scraping plate moves up and down; according to the agricultural product detection device, impurities adhering to the inner wall of the box body are scraped away, the situation that the impurities are mixed into a solution and affect agricultural product detection is avoided, and the problem that in the background technology, the inner wall of the box body cannot be cleaned in the using process, and consequently the impurities adhering to the inner wall of the box body affect the next agricultural product detection result is solved.

The application discloses a satellite attitude control system event-triggered STF fault detection method, and belongs to the technical field of detection, which comprises the following steps: establishing a fault model of a satellite attitude control system; introducing an event-triggered mechanism; adopting an STF method to design an event-triggered fault detection filter; obtaining an estimation error dynamic equation and a residual signal through linearization processing of the fault detection filter, realizing complete decoupling of the residual signal and the event-triggered error; converting a design problem of a residual generator into solving a gain matrix of the fault detection filter; calculating a residual evaluation function and comparing the residual evaluation function with a threshold value to judge whether a fault occurs or not. The application utilizes the STF method to design the fault detection filter, can enable the system to keep the tracking ability to a sudden state when reaching a stable state, adopts a brand-new event-triggered framework, realizes complete decoupling of the residual signal and the event-triggered error, and effectively improves the resource utilization rate under the premise of guaranteeing the system performance.

The invention relates to the technical field of photography data processing, in particular to a large-volume oblique photography data visualization loading method and system, and the method comprises the steps: obtaining OSGB format original data; during preprocessing, grids are divided according to spatial scales, OSGB files of low-level LOD are merged into 3DTiles by an octree, an index is generated, and after surface features are semantically segmented by AI, simplification is carried out according to engineering requirements; the dynamic LOD scheduling comprises the steps of dividing an octree into multiple layers of tiles, screening visible tiles through a view cone, filtering shielding through ray detection, and slicing pixel errors; storing the data in a register-memory-SSD-HDD four-level cache by using an LRU-K strategy; performing GPU rendering on SSD data, and adjusting LOD according to a feedback load; the system comprises a data preprocessing module, a dynamic LOD processing module, a distributed cache module and a renderer module which cooperatively realize efficient loading. The problems that in an existing oblique photography data loading technology, static LOD adaptation is poor, data blocks are single, storage hierarchies are insufficient, and the video memory utilization rate is low are solved.

The present invention addresses the problem of providing a monitoring control system for a centrifugal separator, the monitoring control system detecting a rapid increase in solid content, thereby making it possible to quickly detect a decrease in separation performance and to prevent equipment failure. The system is provided with a centrifugal separator 2 into which a liquid to be treated is caused to flow and be introduced from an introduction part 20, and in which a separation plate is rotated by an electric motor 21 and the introduced liquid to be treated is separated into sludge and a separated liquid, the separated liquid being discharged to the outside from a separated liquid discharge part 22. The separated liquid discharged from the separated liquid discharge part 22 is introduced into a separated liquid line 3 provided with at least a back pressure valve 31 and a pressure gauge PG. The back pressure valve 31 is adjusted to guide a part of the separated liquid introduced into the separated liquid line 3 to a detection line 4 provided with at least a detection filtering unit 40, a constant flow rate valve 41, and a flowmeter 42. When it is determined that a measurement value by the flowmeter 42 that measures a flow rate adjusted by the constant flow rate valve 41 provided on the downstream side of the detection filtering unit 40 is equal to or less than a predetermined flow rate lower limit threshold, the electric motor 21 is stopped. In this way, the problem is solved.

A method for detecting filter status is applicable to an electronic device including a filter, and the method includes the following steps. In response to activation of the electronic device, timing is started and an accumulated operating time is obtained. In response to the accumulated operating time being greater than or equal to a time threshold value, a level of dirtiness of the filter is detected through an optical sensing element. The time threshold value is adjusted according to the level of dirtiness of the filter. A notification related to the filter is provided according to the level of dirtiness of the filter.

Provided is a camera calibration method based on single vanishing point recognition. The camera calibration method according to an embodiment of the present invention comprises: applying a vanishing line detection filter to detect vanishing line candidates for a single vanishing point in an acquired image; finding the single vanishing point from the vanishing line candidates; and extracting a plurality of points to calculate a parameter of a homography matrix of a camera having acquired the image. Accordingly, it is possible to accurately link a positional relationship between the real world and a virtual world by accurately modeling a relationship between a real space and the image without changing a position of a CCTV camera or using a calibration board.

The utility model belongs to the technical field of tail gas purification, and discloses a tail gas exhaust device for a bioreactor. The device comprises a condensation container, a filter and a pressure detection piece. Wherein the condensation container is communicated with a tail gas outlet of the bioreactor, and the condensation container is used for condensing and collecting at least part of water vapor in the flowing tail gas; one end of the filter is communicated with the outlet of the condensing container, and the other end of the filter is an exhaust port; the pressure detection piece is arranged between the filter and the condensation container in a communicating mode and used for detecting the pressure of the filter. The tail gas exhaust device for the bioreactor can liquefy and collect most of water vapor, the exhaust efficiency of the bioreactor is improved, meanwhile, the pressure is monitored so that the tail gas exhaust device can be rapidly replaced after the pressure changes, and the reliability of the tail gas exhaust device is improved.

The utility model relates to an intelligent novel self-cleaning device structure which comprises a shell, a first cavity and second cavities are arranged in the shell, and the second cavities are evenly distributed on the periphery of the first cavity and communicated with the first cavity. The structure further comprises an air supply assembly and an air return assembly, the air supply assembly is arranged in the first cavity, and the air return assembly is arranged on the shell and matched with the air supply assembly. The shell is further connected with an air inlet assembly. Through the distribution design of the first chamber and the second chamber, the air purification efficiency is improved, and the uniformity of indoor air quality is ensured; through the arrangement of the sensor and the electric valve, the opening degree of the electric valve is adjusted according to the indoor pressure, the fresh air introduction amount is controlled, the room pressure difference is adjusted, whether the filter runs normally or not can be detected through the differential pressure gauge, and the running safety of the self-purifier is guaranteed.

The utility model relates to a partition paper pickling weightlessness detection filtering device. The partition paper pickling weightlessness detection filtering device comprises a filtering cup; the sand core filter is positioned on one side of the filter cup and comprises a sand core funnel, a liquid discharge pipe, an external pipe, a vacuum joint and a detection joint; the liquid discharge pipe and the external pipe are located on the side, away from the filter cup, of the sand core funnel, the liquid discharge pipe and the external pipe are fixedly connected with the sand core funnel together, and the external pipe is arranged on the outer side of the liquid discharge pipe in a sleeving mode; the sand core funnel is communicated with the liquid discharging pipe, the vacuum connector is fixed to the outer surface of the external pipe and communicated with the external pipe, one end of the detection connector is fixed to the outer surface of the liquid discharging pipe and communicated with the liquid discharging pipe, and the other end of the detection connector penetrates through the external pipe and extends to the outer side of the external pipe; the liquid collecting bottle is located on one side, far away from the filter cup, of the sand core filter, and the liquid collecting bottle is detachably connected with the sand core filter. According to the partition paper pickling weightlessness detection filtering device, sand core suction filtration is adopted, and the detection accuracy is improved.

The present invention provides an image forming apparatus and program capable of detecting the state of a filter. [Solution] The image forming apparatus according to the embodiment includes an image forming station, a filter, a sensor, and a processor. The image forming station performs image forming using toner. The filter collects toner scattered from the image forming station. The sensor detects the weight of the filter, including the toner collected by the filter. The processor detects information indicating an abnormality in the amount of toner collected by the filter if the weight detected by the sensor exceeds a predetermined threshold before a predetermined maintenance period is reached.

The utility model relates to the technical field of cement board detection, and discloses a reciprocating scraping and adsorption type cement board quality detection device which comprises an isolation frame, a collection mechanism is fixedly arranged between the front and back of the inner wall of the isolation frame, an air suction mechanism is fixedly arranged on the lower portion of the inner side of the collection mechanism, and a detection mechanism is arranged on the lower portion of the inner side of the collection mechanism in a sliding mode. A first clamping mechanism and a second clamping mechanism are fixedly arranged on the two sides of the front side of the inner wall of the isolation frame respectively, a reciprocating mechanism is rotatably arranged in the middle of the front side of the inner wall of the isolation frame, the detection mechanism comprises a fixing plate, a hand pull ring is fixedly arranged on the front side of the fixing plate, and a detection filter screen is fixedly arranged on the inner side of the fixing plate. According to the device, through cooperation between the collecting mechanism and the air suction mechanism, powder scraped off by the reciprocating mechanism is guided to the surface of the detection mechanism, the powder is adsorbed to the surface of the detection mechanism through suction force, and the powder can be conveniently taken out through the detection mechanism to be detected.

The application relates to the technical field of filters, and discloses an assembled power grid harmonic detection filter, which comprises a bottom plate, a protection mechanism and a fixing limiting mechanism are arranged above the bottom plate, the protection mechanism comprises a protective shell, the back surface of the protective shell is fixedly connected with a hinge hinge, the front surface of the hinge hinge is fixedly connected with a protective top cover, a clamping block is clamped in the protective shell, and a sliding plate is slidably connected in the protective shell. The assembled power grid harmonic detection filter is characterized in that the fixing base, the first clamping groove, the second clamping groove, the fixing frame, the threaded rod and the lower pressing plate are matched with each other, the filter installation module can be assembled conveniently, when a component in the filter fails, the entire filter needs to be overhauled on a large scale, the entire filter needs to be replaced and maintained, and the corresponding harmonic detection and filtering module cannot be added, so that the harmonic detection precision is reduced.

This disclosure provides systems, methods, and devices for a memory system that supports row selective self-refresh operations when a host processor is in a sleep mode. In a first aspect, a method of operating a memory system by a memory controller includes receiving a hash filter indicating a first subset of rows in a memory array from a host device over a channel; and refreshing, by the memory controller, a second subset of the rows in the memory array based on the hash filter. The hash filter may be a Bloom filter, a Cuckoo filter, a linear detection filter, or an XOR filter. Other aspects and features are also claimed and described.

This invention relates to the field of nucleic acid detection technology, specifically to a fluorescence detection system for a microfluidic chip used in nucleic acid detection and its application. Specifically, this invention provides a fluorescence detection system and method for a centrifugal nucleic acid detection microfluidic chip. The design concept of the fluorescence detection system of this invention is as follows: the excitation optical path and the microfluidic chip are synchronously fixed on a chip fixing module, keeping the excitation optical path and the detection chamber relatively stationary and unaffected by centrifugal rotation, ensuring that the excitation light always accurately acts on the detection chamber; a one-to-one correspondence between the excitation optical path and the detection chamber is adopted to achieve synchronous excitation of multiple chambers, eliminating the need for expensive optical scanning or electric adjustment mechanisms to achieve complex synchronous control; by placing a camera above the chip fixing module and equipping it with a dedicated detection filter, and using orthogonal optical paths, the capture efficiency and signal-to-noise ratio of the fluorescence signal are improved, thereby solving the problems of unstable excitation, low detection efficiency, and poor signal capture in existing technologies.

The present application relates to filter rod forming online detection technical field, specifically disclose a result reliable, strong real-time online detection filter rod in triacetin uniformity device, including for online detection production in forming filter rod optical density detection module, and processing optical density detection module provided optical density signal signal processing module, signal processing module includes converting the optical density signal of electric signal into digital signal analog-digital conversion unit, the digital signal provided by analog-digital conversion unit is separated into high-frequency and low-frequency signal data separation unit, and for calculating uniformity judgment value according to the amplitude, frequency, phase, phase shift, phase change amplitude and the time length of influence of high-frequency signal and low-frequency signal calculation unit. Also disclosed is a kind of to the online detection filter rod in triacetin uniformity method of above-mentioned device.

A filter structure capable of detecting service life of a filter relates to the technical field of filters. The device comprises a frame body; the filter is arranged in the frame body and is used for filtering airflow circulating in the frame body; the service life detection device is arranged on the air outlet side of the filter, is used for judging the service life of the filter and comprises a reference temperature detection module, an air speed temperature detection module and an MCU processing module; the MCU processing module is connected with the reference temperature detection module and the wind speed temperature detection module so as to obtain the first temperature detected by the reference temperature detection module and the second temperature detected by the wind speed temperature detection module, and the service life of the filter is judged through the first temperature and the second temperature. The technical scheme has the advantages that the service life of the filter can be detected, the filtering effect is ensured, the structure is simple, and detection is accurate and effective.

The application relates to the technical field of automobile exhaust detection, and discloses a detection equipment for automobile exhaust, the detection box is provided with damping supports fixedly connected at the positions of four corners of the bottom, the bottom of each damping support is fixedly connected with a fixed bottom plate, the surface of the fixed bottom plate is fixedly connected with auxiliary damping gas collection assemblies at the positions of both sides and the top, one side of the inside of the detection box is fixedly connected with a detection filter screen, and a filter membrane is arranged in the inside of the detection box and fixedly connected with the detection filter screen; the damping supports, the fixed bottom plate and the auxiliary damping gas collection assemblies are arranged, so that when the detection box is transported and bounces, the downward force generated by the bouncing is absorbed and reduced through the damping supports and the auxiliary damping gas collection assemblies; when the detection box is lifted through the rebound of the damping springs sleeved on the surfaces of the damping supports, the rebound force of the auxiliary damping gas collection assemblies is limited again to avoid the vibration caused by the rebound force, so that the detection box and the internal optical assembly, such as a laser spectrometer lens, are prevented from being deviated or the circuit from being in poor contact due to the vibration, and the stability of the equipment is improved.