177 results about "Darkroom" patented technology

The utility model relates to a control device for a microwave anechoic chamber test system. Comprising a shielding box which is a sealed cavity provided with a cover plate, and the shielding box is provided with a power supply socket, a data socket and an optical fiber coupler; a control circuit board, an AC-DC power supply module, a data optical fiber transceiver and other modules are installed in the shielding box. A plurality of motor control units, a power supply interface and a communication interface are integrated on the control circuit board, and a first output end of the AC-DC power supply module is connected with the control board and is used for supplying power to the control board; one end of the data optical fiber transceiver is electrically connected with the optical fiber coupler, and the other end is electrically connected with the communication interface for converting the signal into an optical signal and outputting the optical signal. The control circuit board is placed in the shielding box, so that the size of the rotary table or antenna tower equipment is reduced, and the electromagnetic interference risk of a motor and a darkroom environment is reduced; the control circuit board integrates the servo motor control unit and the stepping motor control unit for modular design, serves as an independent unit of the darkroom test system, and is high in universality.

The invention provides a photoelectric solar irradiance meter self-calibration device for outdoor monitoring and a calibration method, and belongs to the technical field of photovoltaic monitoring. The device comprises a sky imager, a solar irradiance meter for monitoring, a standard solar irradiance meter, a sealed darkroom, a three-dimensional adjusting bracket and a waterproof sealed box, wherein a dual-channel temperature collector, a dual-channel voltage collector and a control, data processing and storage module are integrated in the waterproof sealed box. The sealed darkroom normally protects the standard irradiance meter to prevent the standard irradiance meter from aging and dust deposition; the dual-channel collector synchronously collects temperature and voltage of a standard solar irradiance meter for monitoring, and supports a calibration algorithm to realize dynamic updating of sensitivity; the three-dimensional adjusting bracket ensures that the device is parallel to the mounting plane of the photovoltaic module, and the angle response matching degree is improved; the sky imager judges the calibration weather condition to guarantee the effectiveness of the calibration environment; the control module realizes automation of a self-calibration process, adapts to an outdoor long-term monitoring scene, and realizes continuous and accurate measurement of photovoltaic solar irradiance.

The application relates to the field of artificial network control, in particular to an artificial network control method, device and system for shielding across a darkroom. By using a fiber link and an internal battery power supply architecture in a fully-closed shielding darkroom, the interference of personnel on a test environment is completely eliminated, monitoring of parameters such as internal temperature and voltage of the integrated darkroom is added, zero-crossing synchronization noiseless operation of phase switching is realized, in addition, user end environment adaptive identification, driving parameter dynamic calibration and equipment life prediction are realized, and the needs of high-precision, unattended automatic phase switching and testing are met.

The utility model discloses an LED lamp detection device which comprises a detection table, the top of the detection table is fixedly connected with a detection box, the top of the detection box is covered with a fixing cover, the top of the fixing cover is connected with a brightness meter in a penetrating mode, the bottom of the fixing cover is fixedly connected with a hanging bracket, the hanging bracket is fixedly connected with an LED installation base, and the LED installation base is fixedly connected with a light source. The beneficial effects of the utility model are that the LED lamp to be detected is firstly installed on the LED installation seat, then the lifting mechanism drives the fixed cover to close the detection box, the LED lamp on the LED installation seat extends into the detection box to carry out darkroom detection, then the LED installation seat is controlled to be electrified, and the LED lamp can be conveniently and rapidly detected. During illumination, the brightness meter can detect the brightness, the heat dissipation mechanism can dissipate heat generated by the LED lamp in the detection process, the structure is reasonable, the brightness of the darkroom can be conveniently detected, and operation is convenient.

The invention discloses a synthetic aperture radiometer darkroom phase calibration method and device. The method comprises the following steps: installing a synthetic aperture radiometer and a point target emission source in a microwave anechoic chamber; in the first-stage test, unit antenna output ports are connected with equal-length test cables and connected to a microwave test instrument, a synthetic aperture radiometer is set to be in an antenna observation mode, and a point target observation unit antenna phase difference test is carried out; in the second-stage test, the output end of the unit antenna is connected with each receiving channel of the synthetic aperture radiometer, the synthetic aperture radiometer is set to be in an antenna observation mode, and a point target observation full-system phase difference test is carried out; in the third stage of testing, the synthetic aperture radiometer is set to be in a common noise injection calibration mode, and common noise injection calibration is carried out; and calculating and counteracting a near field effect phase difference, a unit antenna phase difference and a receiver channel phase difference to obtain an accurate noise distribution network phase difference parameter. Darkroom phase calibration is achieved under the near-field condition, the result is accurate, and the method is simple, convenient and practical.

The utility model discloses an on-line intelligent fluorescent magnetic trace distinguishing mechanism, which relates to the technical field of fluorescent magnetic powder detection and comprises a darkroom, a first conveying rack, a first blanking rack, a second blanking rack and a second conveying rack. The first conveying rack transversely penetrates through one side of the darkroom and extends into the darkroom, a first conveying belt is installed at the top of the first conveying rack, and the first discharging rack and the second discharging rack are arranged on the front side and the rear side of the first conveying belt correspondingly; the top height of the first discharging rack and the top height of the second discharging rack are matched with the top height of the first conveying belt, and the second conveying belt is arranged on one side of the back face of the first discharging rack. According to the utility model, a magnetized workpiece containing magnetic traces can be quickly and conveniently subjected to magnetic trace detection treatment with higher detection accuracy and higher safety, so that the detection work is time-saving and labor-saving, higher in efficiency and higher in safety.

A blind hole guiding structural part for a gas hose comprises a guiding part A and a guiding part B. The guiding part A comprises a magnetic suction head A, and the magnetic suction head A is magnetic. The lower part of the magnetic suction head A is connected with a metal hose; a pipeline fixing hoop is arranged below the metal hose; the guide piece B comprises a magnetic suction head B, and a metal hose is arranged at the lower part of the magnetic suction head B. The gas hose blind hole guiding device solves the problem that in the prior art, a gas hose is inconvenient to penetrate through a blind hole, double assemblies penetrate through an open hole respectively, contact adsorption is conducted in a darkroom, the threading difficulty of the blind hole is lowered, the gas hose blind hole guiding device is particularly suitable for blind hole guiding in the multi-bending environment, and the effect of convenient operation is achieved.

The invention provides a hiding device for a test darkroom and the test darkroom. The top of the test darkroom is provided with a hiding parking area. The hiding device comprises a lifting mechanism, a turnover mechanism and a control system, and the lifting mechanism and the turnover mechanism can jointly form a closed wave-absorbing shielding surface through the control system so as to shield interference sources such as travelling vehicles in the hidden parking area. Driving or similar electromagnetic test interference sources can be effectively shielded and shielded, and the influence of the structure on the electromagnetic environment of the test darkroom is reduced.

The utility model relates to the technical field of film detection, in particular to a film defect detection device. The device comprises a film viewing cavity arranged in a darkroom, the film viewing cavity comprises a main cavity defined by baffles and a middle platform layer arranged in the main cavity, a light through hole is formed in the middle platform layer, a xenon lamp is installed at the top of an upper cavity so that light can irradiate a to-be-detected film at the light through hole, and a defect imaging curtain is laid at the bottom of a lower cavity so that the to-be-detected film can be detected. The shadow left by the thin film at the light through hole is received; light penetrates through the thin film, shadow is projected on the defect imaging curtain laid at the bottom of the lower cavity, due to the fact that the xenon lamp with higher light penetrating power is selected, slight deformation type defects of the thin film can be seen on the defect imaging curtain, the defects of an existing thin film defect observation mode are overcome, and the tiny and slight deformation type defects of the thin film can be seen.

The invention relates to an AI training multi-modal imaging-oriented glass defect data set acquisition device and method, and aims to solve the problems of inconsistent imaging quality, complex device structure and incapability of automatically constructing a high-quality multi-modal data set in the existing glass defect acquisition technology. The device comprises a darkroom structure, and a light source regulation and control module, a polarization regulation and control module, a spectrum regulation and control module, a diffuse scattering regulation and control module, a rotary loading platform and an imaging module which are integrated in the darkroom structure, and each module is controlled by a control unit in a coordinated manner; according to the method, a multi-dimensional parameter combination matrix is established, parameters are called in sequence to collect images and bind metadata, and a structured data set is output after image registration and fusion. According to the method, ambient light interference is inhibited through modular electric control design, the consistency and definition of defect images are improved, differentiated display of multiple types of glass defects is realized, a high-quality multi-modal data set with optical parameter labels is automatically constructed, and reliable data support is provided for AI defect detection model training.

The utility model relates to the technical field of darkroom gate control, and particularly discloses a darkroom gate control structure, which comprises a fixed plate, an overhead rail is fixedly mounted on the outer surface of the fixed plate, the fixed plate is fixedly mounted on the outer surface of a wall body, and an intelligent control networking panel is fixedly mounted on the outer surface of the wall body on one side of the fixed plate. According to the darkroom gate control structure, when a user needs to enter a darkroom, the user only needs to input a password through the intelligent control networking panel or recognize the face to control and start the servo driving motor, and the intelligent control networking panel records the information of the person entering the darkroom and uploads the information to the system; and the servo driving motor can drive the screw rod to rotate, so that the sliding block connected with the screw rod can move on the outer surface of the hanger rail to drive the door plate to automatically move, a user does not need to manually open the door plate when entering the darkroom, and identity information of the entering person can be recorded.

The invention provides an automatic test system and method for the dynamic scene projection quality of an intelligent vehicle lamp, and relates to the technical field of vehicle lamp projection detection. Comprising a test bench and a control device, and the test bench is provided with an intelligent vehicle lamp module and an image acquisition module and is arranged in a darkroom environment; control software and scene recharging software are integrated in the control device; through scene selection, camera position self-adaption, automatic focusing, projection triggering, sampling, data processing and quality verification, the problems of low precision, poor efficiency and narrow fixed camera application range of a traditional human eye test are solved, the automatic and precise test of the multi-dynamic scene projection quality of the intelligent vehicle lamp is realized, the method can be used for long-term stability test, and the blank in the field is filled.

The utility model discloses a camera obscura for receiver testing. The camera obscura comprises a box body; a transmitting antenna, wherein the transmitting antenna is arranged in the box body; and the mounting seat is arranged in the box body in a sliding manner and is arranged to be used for mounting a test product. According to the camera obscura for testing the receiver, the transmitting antenna and the mounting base are integrated in the box body, and compared with a darkroom, the camera obscura which is independently designed does not need to be reserved in use and does not have a complicated process, so that the receiving and transmitting signal testing efficiency of the receiver can be improved; the camera obscura is small in overall size and convenient to move, portable design is achieved, a certain number of camera obscura can be customized according to requirements, receiver testing is facilitated, and using is more flexible; when the camera obscura is used for testing, only the cost for manufacturing the camera obscura and the tool cost for fixing different receivers need to be paid, so that the cost is greatly reduced.

The application provides an AVM calibration method, comprising the following steps: determining at least one original calibration pattern in which corner point detection fails in a plurality of original calibration patterns laid around a vehicle and an original calibration pattern arrangement in which the at least one original calibration pattern is located; acquiring a redundant calibration pattern arrangement arranged at intervals with the original calibration pattern arrangement; performing a corner point detection algorithm on the original calibration pattern arrangement and the redundant calibration pattern arrangement to obtain corner points of a calibration pattern arrangement in which corner point detection succeeds in the original calibration pattern arrangement and the redundant calibration pattern arrangement, so as to calibrate AVM by using the corner points. The application also discloses a vehicle-mounted device and a storage medium. The application realizes the following advantages: without repeatedly adjusting light, without a special material calibration pattern and without constructing a darkroom and arranging controllable light sources, the operation process of AVM calibration is simple.

The application discloses a kind of measuring camera image high dynamic range device and method, it is provided with optical darkroom, wide dynamic light source, lens and host computer, wherein lens is installed at the opening of optical darkroom, wide dynamic light source is installed in optical darkroom inside facing lens, and wide dynamic light source includes LED lamp group and time sequence control circuit module;The target surface of the scientific camera to be measured is connected with lens, and host computer is connected with the scientific camera to be measured to establish control connection and data connection;Host computer starts the scientific camera to be measured and sends measurement start instruction to time sequence control circuit module in wide dynamic light source, time sequence control circuit module starts LED lamp group and controls the light-emitting duration of each LED lamp, after the image is photographed to the scientific camera to be measured, it is uploaded to host computer, and host computer obtains the dynamic range of the scientific camera to be measured by detecting the number of LED light spot in image.This application obtains dynamic range by analyzing the image that the scientific camera to be measured is photographed to wide dynamic light source, effectively improves dynamic ratio measurement range.

The utility model provides a keyboard LED lamp brightness detection jig, which comprises a bottom plate, a cover plate, positioning pins, a lamp controller, a positioning shade block and an illuminometer, and is characterized in that at least two groups of positioning pins are arranged around each group of keycaps to quickly position the positioning shade block, so that the same detection position at each time is ensured, and the detection error is reduced; the positioning shielding block is attached to the cover plate, so that the pressing distance of the keycap is a specific value, the detection accuracy is improved, and certainly, the upper end face of the cover plate can be flush with the top of the keycap, namely, the keycap cannot be pressed; the lower end face of the positioning shade block is tightly attached to the cover plate, and external light cannot enter the detection cavity, so that the detection cavity forms a darkroom, and the detection accuracy is further improved.

The invention relates to a high-compactness large-view-field active and passive simulation rotary table, and belongs to the technical field of test simulation rotary tables. Comprising a gantry type base, an outer frame assembly, a middle frame assembly and a tested product. The gantry type base is of a horizontally-placed frame structure. The outer frame assembly is vertically and fixedly installed in the middle of the gantry type base. The middle frame assembly is installed in the middle of the outer frame assembly. A tested product is axially and horizontally installed on the middle frame assembly. The three-degree-of-freedom motion of the tested product in the space, namely rolling, pitching and yawing motion, is realized; the problem that a conventional rotary table structural form shields a field angle in the active and passive simulation process is solved, the overall structural size of the rotary table is effectively reduced, high-compactness design is achieved, and the adaptability of a rotary table product in a darkroom environment is improved.

The invention discloses a fluorescent penetrant detection method under a white light condition, and aims to solve the problems that when the ambient light illuminance is between 20Lx and 500Lx, a darkroom needs to be additionally built or lighting equipment needs to be added in the existing detection technology, and the correlation between parameters and sensitivity is fuzzy. The method comprises the following steps: firstly, establishing a white light illuminance-black light intensity-minimum recognizable defect size quantification correlation model, and then carrying out the steps of workpiece pretreatment, illuminance measurement and parameter initial determination, sensitivity test block verification, personnel qualification assessment, real-time parameter monitoring, remeasurement exception handling and the like. And accurate detection of the surface defects of the product in the illumination interval is realized. The method does not need additional equipment, quantifies the incidence relation between the detection parameters and the sensitivity, remarkably improves the detection efficiency and the result reliability, and is particularly suitable for scenes such as field operation and large-scale structure field detection.

The invention discloses a full-automatic lamp inspection machine for oral liquid, and relates to the technical field of lamp inspection machines for oral liquid. Comprising a working table, a discharging table arranged on one side of the working table, a baffle arranged on the outer wall of the working table, a feeding table arranged on the other side of the working table, a control end installed on the surface of the working table and a lamp inspection darkroom arranged in the working table. The discharging disc is rotationally connected to the side, close to the lamp inspection darkroom, of the workbench, and the feeding track is connected between the feeding table and the lamp inspection darkroom. By means of the lamp inspection machine, the problems that before an existing lamp inspection machine conveys oral liquid to a lamp inspection darkroom, the medicine liquid in a bottle can be rotated and shaken, floccules and precipitates in the medicine liquid are made to suspend, impurities can be accurately recognized in the follow-up lamp inspection link, and rotating and shaking of existing equipment still have an optimized space in the aspect of matching of force and rotating speed, so that the rotating and shaking effect is poor are solved. And floccules and sediments in the liquid medicine cannot be fully suspended, so that leak detection is easily caused in the subsequent light inspection process.

The invention discloses an environment-friendly electromagnetic shielding building material and a preparation method thereof, and relates to the technical field of building materials. The material is prepared by compounding nano copper cobaltate, magnesium aluminum hydrotalcite and polyvinylidene fluoride through gradient structural design. The preparation method comprises the following steps: preparing nano copper cobaltate particles, mixing the nano copper cobaltate particles with magnesium-aluminum hydrotalcite powder and polyvinylidene fluoride to form a composite film, and finally carrying out hot-pressing molding to obtain a final product. The problem that an existing electromagnetic shielding material is prone to interface fatigue failure under the dynamic mechanical load is solved, and high strength, high toughness, high shielding effectiveness and high environmental stability are achieved by optimizing the adding amount and the structure of the magnesium-aluminum hydrotalcite. The material is excellent in electromagnetic shielding, interlayer shear strength and fatigue life, and is suitable for building scenes such as microwave anechoic chambers and confidential conference rooms.

A glasses-free AR display device includes a half mirror, a darkroom-like structure, a display, an illumination, and a video controller. The half mirror is disposed upright on a floor. The darkroom-like structure is provided behind the half mirror. The display is disposed in the darkroom-like structure obliquely to a surface of the half mirror. The illumination illuminates a user located in front of the half mirror on the opposite side of the display. The video controller receives a video signal and causes the display to display a video.

The utility model provides a small-size folding light path visual training device which comprises a front shell, a middle frame and a rear shell which are connected in sequence, the front shell is provided with a lens device, and a visual training module, a left darkroom, a right darkroom, a flexible FPC and a reflection lens are arranged between the middle frame and the rear shell; the visual training module, the reflecting lens, the left darkroom, the right darkroom and the lens device jointly form a light path system. According to the visual training device with the small-size folding light path, the problems that an existing device is large in size, close in imaging position and poor in experience are solved, the visual training device is heavy to wear, the left eye and the right eye can see the same visual pattern through the spirally-arranged LED light sources, the left eye and the right eye share one visual cylinder, the size is saved, and the imaging distance is increased.

The invention discloses a high and low temperature compact range darkroom satellite-ground link real-time simulation verification system, and belongs to the technical field of aerospace testing. The system comprises a compact range darkroom, an integrated high and low temperature control subsystem, an integrated cooperative control and link simulation subsystem, a radio frequency test subsystem and a mechanical support subsystem. The core innovation of the device is as follows: a polymethacrylimide (PMI) foam material with a dielectric constant close to that of air is adopted to integrally construct a closed temperature control cavity, so that electromagnetic measurement errors introduced by a traditional medium window at high and low temperatures are thoroughly eliminated; and through a high-precision synchronous control technology, wide-temperature-range environment simulation, phased array terminal calibration and dynamic satellite-ground communication link simulation are deeply integrated and synchronously carried out. According to the method, the real, efficient and closed-loop verification of the functions and performance of the satellite-ground communication system is realized in an equivalent in-orbit temperature environment, the test precision, authenticity and efficiency are remarkably improved, and the development of high-reliability spacecrafts is powerfully supported.

The invention discloses a photovoltaic module dark current testing device, and relates to the technical field of dark current detection devices.The detection device comprises a workbench, a cabinet is placed on the workbench, a plurality of drawers are installed on the cabinet in a sliding mode, a plurality of current detection modules are evenly installed in the drawers, and an upper computer is installed on the workbench; the upper computer is electrically connected with the current detection module, the cabinet body is provided with a temperature and humidity control assembly, the temperature and humidity control assembly adjusts the temperature and humidity in the cabinet body, and when the drawer is completely pushed into the cabinet body, a darkroom for accommodating the photovoltaic module is formed together, so that the requirement of a dark current test of the photovoltaic module on a non-illumination environment is met; the detection precision is improved, the upper computer serves as an overall control unit of the device to form closed-loop control of instruction issuing, data acquisition and result feedback, the display screen connected with the upper computer displays the test state, real-time parameters and test results in real time, manual reading judgment is replaced, and errors are reduced.

The application discloses a kind of glass substrate production line, including clean partition, darkroom, camera acquisition device, optical light source and display curtain wall, clean partition is provided with darkroom and first conveying device in, darkroom is set on the conveying path of first conveying device, camera acquisition device, optical light source and display curtain wall are all set in darkroom, camera acquisition device and optical light source are adjacent to each other, phenomenon curtain wall is located at the top in darkroom;Rotary table for fixing and limiting glass substrate is transmitted on first conveying device, rotary table is also used to drive glass substrate to rotate, optical light source is used to irradiate glass substrate.The automatic inspection equipment designed in the application can confirm the collected optical defect pattern and perform board rejection processing, which not only avoids the risk of missed detection, but also reduces the workload of manual sampling inspection, greatly reducing labor consumption and economic loss.

The present application relates to the assembly technology of foam darkroom material, in particular to a mounting method of sharp cone hard foam darkroom material suitable for extreme use environment, and belongs to the field of material engineering. The steel wire barb method is adopted, a hole is first drilled in the middle of the bottom of the sharp cone hard foam darkroom material unit, then one end of a metal round rod is fixed on the bottom plate, the other end of the metal round rod is loaded with a steel wire shaped by moulding, and the steel wire is inserted into the hole in cooperation with the hole in the bottom of the hard foam darkroom material, the steel wire in the hole plays a rebounding role to make the end of the metal round rod embedded into the hole of the hard foam, and a barb hook is formed to tightly fix the sharp cone hard foam darkroom material unit so that it cannot be moved and rotated at will, and fast and stable installation is realized. The method can tightly connect the sharp cone structure hard foam darkroom material with the metal bottom plate, and can effectively solve the problem of mass installation of foam darkroom material used in extreme use environment.

The application provides a kind of multi-channel phased array transceiver multi-beam test system and transmitter, receiver test method, it is related to phased array test technical field.System includes: virtual coordinate generation module, generates the virtual coordinate data of different rotating postures of antenna;Multi-channel phased array transceiver generates beam weight according to virtual coordinate;Power division combining network has wave path equal length and power equal division characteristics;Test instrument, signal acquisition or input;Data processing module is based on array coherence gain and unit directional diagram calculation equivalent directional diagram gain.The application is replaced by virtual posture construction darkroom turntable, combined with equal length power division network to realize coherence gain detection, can be quickly completed in laboratory environment equivalent test of transceiver multi-beam performance, greatly reduces test cost and period, improves test efficiency and universality.

The present invention relates to an apparatus (100) for the detection of at least one target analyte in a sample to be analysed applied to a diffractive sensor (1), including a housing (101) delimiting within it a dark chamber (102); a support device (105) suitable for supporting and integrally holding the diffractive sensor (1), said support device (105) being movable within the dark chamber (102) and between the inside and outside of the dark chamber (102); a source (103) of laser light suitable for emitting laser light with a wavelength within the visible spectrum in the darkroom (102); a screen (107) arranged in the dark chamber (102); a vision system (111) configured to capture images on the screen (107); and a control unit operatively connected to the laser source (103), the support device (105) and the vision system (111).

The utility model discloses an automobile lamp full-function optical performance detection device which comprises a cabinet body and an optical detection box, the optical detection box is installed in the middle of an inner cavity of the cabinet body, and a light type detection camera is installed on the upper right corner of the inner wall of the optical detection box through a support and a fastener structure. And a projection light type background is mounted on the left side of the inner cavity of the light detection box through a bracket and a fastener. The full-function optical performance detection equipment for the automobile lamp can be matched with a tool mould to see the rear of a lens as a self-made darkroom, interference of all external light is completely shielded, inflection points, brightness uniformity and overall judgment of a light-emitting area of the automobile lamp are detected through multi-camera deployment, whether animation detection of the automobile lamp meets production judgment or not is detected, and the detection efficiency is improved. And detecting the passing rate through a software algorithm. The detection efficiency and the detection accuracy are far higher than those of human eye detection, the manual misjudgment rate is greatly reduced, and effective guarantee is provided for the stability of the vehicle lamp in the using process.

The utility model belongs to the field of nuclear power station pipelines, and particularly relates to a conveying pipeline supporting structure which comprises a supporting column, a sliding groove is formed in the supporting column, a supporting right-angle plate is fixedly connected to the inner wall of the sliding groove, a placing structure is arranged at the top of the supporting right-angle plate, a buffering structure is arranged on the placing structure, and the buffering structure is fixedly connected with the supporting right-angle plate. The placing structure comprises a placing arm, the top of the supporting right-angle plate is fixedly connected with the placing arm, and a darkroom is formed in the placing arm. According to the conveying pipeline supporting structure, the positioning ring of the pipeline body is clamped into the positioning grooves of the curved pressing plates, then the adjusting disc is rotated to drive the threaded rod to enable the curved pressing plates to move, the pipeline body is fixed through the two curved pressing plates, the fixing work of the two curved pressing plates can be completed through the through holes by using screws, gaskets and nuts, and double fixing is achieved; the situation that the pipeline body deviates after being fixed is effectively avoided, and stable installation and fixation of the pipeline are ensured.