41 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 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 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 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 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.

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.

The utility model relates to the field of filtering devices, in particular to a filtering device for quality safety detection of agricultural products. Comprising a box body, two crushing rollers and an extrusion opening and closing assembly, two rotating shafts are rotatably arranged on the inner wall of the box body in a penetrating mode, the two crushing rollers are fixed to the arc surfaces of the two rotating shafts correspondingly, a supporting plate is fixedly connected to one side of the outer wall of the box body, and a driving motor is fixedly connected to one side of the supporting plate. The filtering device for the quality safety detection of the agricultural products has the advantages that after crops are crushed, the extruding plate can be automatically adjusted to extrude disintegrating slag on the filtering plate, so that slurry in the disintegrating slag can be further extruded out, raw materials to be detected can be more sufficient, and the detection efficiency is improved; after the box body is used, the side surface of the box body can be conveniently opened, so that the box body can be conveniently cleaned and maintained by personnel, and the service life of the filtering device for the quality safety detection of the agricultural products is prolonged.

The invention discloses an air pathogen capture and detection filter membrane, an integrated Janus composite membrane and a preparation method and application thereof, and belongs to the technical field of filter membranes. According to the technical scheme, the filter membrane is a full-bio-based water-soluble air filter membrane, has a porous net-shaped structure, has high filter efficiency and low pressure drop, and is prepared by taking lignin and gelatin as raw materials through a phase separation process; the composite membrane is prepared by modifying a gemini type AIE surfactant G-MeOTTVP on the basis of the filtering membrane. The composite membrane disclosed by the invention realizes three-in-one function integration of capture, detection and inactivation, overcomes the key limitations of single function and step-by-step flow in a traditional biological aerosol treatment method, lays a foundation for developing an intelligent and multifunctional material system, and has a wide application prospect. The system has a wide application prospect in the field of active prevention and control of biological aerosol pollution in various scenes.

To provide a CO2 gas sensor capable of measuring the concentration of a CO2 gas at a concentration higher than before.SOLUTION: The CO2 gas sensor 1 includes a tubular measuring cell 2 of a predetermined length into and from which a gas containing a CO2 gas to be detected is introduced and discharged, an optical source 11 for irradiating an atmosphere of the gas containing the CO2 gas to be detected in the measuring cell 2 with light including wavelengths absorbed by the CO2 gas, a detection filter 16 including a first detection filter 16a having a center frequency set to 3.9 μm so as to transmit light of wavelengths not absorbed by the CO2 gas among the light irradiated from the optical source 11 and a second detection filter 16b having a center frequency set to 4.4 to 4.5 μm so as to transmit light of wavelengths absorbed by the CO2 gas among the light irradiated from the optical source 11, and a first light receiving device 16a for receiving light transmitted through the first detection filter. 18a, and a second light receiving device 16b for receiving the light transmitted through the second detection filter 18b.SELECTED DRAWING: Figure 1

The invention relates to a face map high-definition restoration method for multi-view three-dimensional reconstruction. The method comprises the following steps: performing fuzzy detection filtering on a multi-view graph; carrying out 2D face segmentation; projecting the 3D model to generate a UV map; the UV domain Diffusion model is repaired; poisson fusion is carried out, on the premise that hardware equipment is not upgraded, pore-level details of a face map in multi-view reconstruction are optimized through an algorithm, and deformation of five sense organs and fusion chromatic aberration caused by a general super-resolution method are solved.

The application relates to a Beidou and mobile communication fusion positioning method based on modulation detection, and belongs to the technical field of satellite navigation and communication engineering. The method comprises the following steps: acquiring a Beidou positioning signal and a high-frequency carrier frequency signal, extracting a frequency parameter of the Beidou positioning signal and presetting a carrier frequency screening condition, constructing an amplitude modulation binding scheme, forming an initial composite signal, constructing a multi-path integration multiplexing mechanism, according to the number of signal paths and time delay requirements, adopting a combined superposition or time slot allocation mode to complete signal integration, establishing a same network transmission mode, transmitting the signal to a target area by means of existing transmission resources, setting a signal separation and restoration process, restoring the Beidou positioning signal through carrier frequency extraction, signal separation and interference filtering, and according to signal purity feedback, iteratively optimizing modulation amplitude and detection filtering parameters. Efficient compatibility of the Beidou positioning signal and the mobile communication network is realized, existing communication facilities are reused without additional wiring, and the problem of Beidou signal transmission in a complex shielding scene is solved.

A filter device of an air-conditioning system of a motor vehicle is provided. The filter device has at least one indicator device arranged in the filter device, the indicator device having at least one electrically conductive indicator material, the conductive characteristics of which vary in a manner dependent on the degree of loading of the filter device with filtered particles. Also provided is a motor vehicle having an air-conditioning system comprising the filter device, and a method for detecting the state of the filter device.

The application relates to a culture medium batching device and a culture medium fermentation system. The culture medium batching device comprises a batching tank, a stirring mechanism, a filter and a detection assembly. The batching tank is provided with a batching cavity, a feeding port and a discharging port, the batching cavity is communicated with the feeding port and the discharging port, and the discharging port is connected with a discharging pipe. The stirring mechanism is arranged in the batching tank, at least part of the stirring mechanism is arranged in the batching cavity, and the stirring mechanism is used for stirring the culture medium in the batching cavity. The filter intercepts insoluble substances in the culture medium, so that the culture medium filtered by the filter is particle-free and completely dissolved. In the preparation process, the detection assembly detects whether the filter is blocked in real time. If the filter is blocked, the filter is cleaned in time, the filter can smoothly filter the insoluble substances in the culture medium, the culture medium flowing out of the filter is completely dissolved, and therefore, the valve on the pipeline conveying the fermentation liquid is prevented from being worn out and leaking, so that contamination and waste of the whole batch of fermentation liquid are avoided.

Provided are a method and an electronic device for detecting contamination of a filter. When a revolutions per minute (RPM) of a fan motor increases so as to exceed a target RPM, a stabilization time is detected from a time point when the RPM of the fan motor reaches the target RPM to a time point when the RPM of the fan motor is maintained within a reference RPM difference with respect to the target RPM. When it is determined that the detected stabilization time is greater than a filter replacement threshold time, a notification to replace the filter is displayed on a display.

According to embodiments, an image forming apparatus includes an image forming station, a filter, a sensor, and a processor. The image forming station performs image formation using a toner. The filter collects the toner scattering from the image forming station. The sensor detects the weight of the filter including the toner collected by the filter. In a case where the weight detected by the sensor exceeds a predetermined threshold before a predetermined maintenance period comes, the processor detects information representing the abnormality of a toner collection amount in the filter.

This invention provides a method for operating a filtration device and a filtration device in general. The method includes the following steps: when a detection mechanism detects that the filter needs cleaning, the air inlet and outlet of the filter to be cleaned are closed, the drain outlet of the filter to be cleaned is opened, and a cleaning mechanism blows air into the filter element in the filter to be cleaned. This method can automatically detect whether the filter needs cleaning, and can clean the filter by blowing air into the filter element through the cleaning mechanism to blow powder out from the drain outlet; the equipment maintainer does not need to manually remove and clean the filter element; therefore, this method improves the cleaning efficiency of the filtration device.

The embodiment of the invention provides a step-down circuit, a vehicle lamp system and a processing method of a vehicle lamp control module, and relates to the technical field of vehicle lamp control. Wherein the driving unit, the current detection module, the first filtering module and the second filtering module form a step-down circuit, and the current detection resistor, the first current detection filtering capacitor and the second current detection filtering capacitor form a current detection module. The driving unit adjusts an electric signal output by a direct-current power supply of a vehicle to a current value required by a lighting function indicated by a vehicle lamp control instruction based on the vehicle lamp control instruction obtained by the vehicle lamp control module, and the adjusted current value is subjected to noise reduction processing through the current detection module, the first filtering module and the second filtering module. The target current value required by the lighting function indicated by the vehicle lamp control instruction is obtained, and the first current detection filter capacitor and the second current detection filter capacitor can effectively reduce interference of high-frequency signals on the step-down circuit. Therefore, the effects of improving the electromagnetic compatibility of the vehicle lamp control module and the accuracy of the control time sequence can be achieved.