469 results about "Darkroom" patented technology

The invention discloses a combustible liquid limit oxygen concentration testing device and method, and the device comprises an electrolyte supply system which comprises a height-adjustable placement platform and a constant-pressure liquid supply module; the combustion system comprises a base and a combustion tube, a partition plate is fixedly connected to the middle position in the combustion tube, an ignition module is detachably connected to the center position of the top face of the partition plate, a lampwick tube is arranged in the ignition module, a lampwick is arranged at the top end of the lampwick tube, and rectification modules are arranged on the top face of the partition plate and the inner bottom of the combustion tube correspondingly; an experimental darkroom is mounted on the top surface of the base; a gas inlet pipe is mounted at the bottom of the combustion pipe; the gas distribution system is connected with the control system; the optical measurement and analysis system is mounted in the experimental darkroom; a waste liquid recovery module is installed at the bottom of the base. A discharge pipe is installed at the bottom of the combustion pipe. The constant-pressure liquid supply module can ensure that electrolyte with stable pressure is provided for the lampwick tube, and the accuracy and repeatability of a test result are ensured.

The utility model provides a quick detection device for quick type biological indicators, which comprises a shell, a darkroom and a control system, the darkroom and the control system are arranged in the shell, a camera component and a culture room corresponding to the camera component are arranged in the darkroom, a plurality of detection holes for placing the biological indicators are arranged in the culture room, and the detection holes are communicated with the control system. An ultraviolet light source is arranged in the detection hole, a mounting hole corresponding to the detection hole is formed in the cover plate above the darkroom, and an opening is formed in the position, corresponding to the mounting hole, of the shell. According to the utility model, the super-definition starlight CCD camera is adopted to detect fluorescence generated in the biological indicator, the detection speed is high, the accuracy is high, and real-time monitoring and alarming can be realized.

The invention relates to the field of automobile electronic testing technology and equipment, and discloses a vehicle-mounted camera imaging quality testing method and device suitable for a rain and fog scene, and the method comprises the steps: installing a to-be-tested camera module in a rain and fog environment cabin, setting the spectrum and illumination of a top natural illumination simulation system, and simulating the illumination at different time periods; selecting a test target plate in the darkroom; starting an automatic centering module to align the optical axis with the standard plate reference; rain and fog parameters are set through the environment control host, the rain and fog supply system is started to simulate different levels of rain and fog environments, and the raindrop particle size, concentration, dripping speed, fog visibility and fogdrop particle size are dynamically regulated and controlled; shooting a target plate graph card, extracting characteristic parameters by an image analysis module, performing quantitative analysis, and generating an evaluation report, so as to solve the technical problem of singleness of rain and fog scene environment simulation in the prior art.

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 belongs to the technical field of radar wave-absorbing material testing, and provides a high and low temperature controllable radar wave-absorbing material reflectivity testing device and method, and the device comprises a microwave darkroom, a detection mechanism and a tested object placement mechanism which are arranged in the microwave darkroom, and a temperature control mechanism; the detection mechanism comprises a first bracket arranged in the microwave darkroom, and a transmitting antenna and a receiving antenna which are arranged on the first bracket; the tested object placing mechanism comprises a second bracket arranged in the microwave darkroom and a cover body arranged on the second bracket and used for placing a tested object; the temperature control mechanism comprises a temperature control box, and an air inlet pipe and an air return pipe which are connected with the temperature control box; the ends, away from the temperature control box, of the air inlet pipe and the air return pipe are communicated with the interior of the cover body, the air quantity and the air speed entering the cover body are controlled through the temperature control box, the temperature and the humidity in the cover body meet preset requirements, the real environment can be simulated, and the heating uniformity of a tested material can be guaranteed through the arrangement of the cover body.

The embodiment of the invention relates to the field of antenna calibration, in particular to an antenna gain calibration system and method based on Rydberg atoms, and the system comprises a frequency stabilization module of a detection light source, a light path module, a microwave module, a signal detection module and a darkroom. A frequency stabilization module of the detection light source is used for stabilizing the laser wavelength of a semiconductor laser in a light path module, so that the laser wavelength is suitable for detection light of a Rydberg electromagnetically induced transparency (EIT) system; the light path module is used for generating coupling light and detection light; the coupling light and the detection light are oppositely emitted in an alkali metal atom gas chamber in the darkroom, alkali metal atoms in the alkali metal atom gas chamber are excited to be in a Rydberg state through two-stage excitation, and an EIT signal window needed by an experiment is obtained; the microwave module is used for generating and transmitting a microwave signal to control a microwave electric field in an experiment, and the microwave electric field influences an EIT signal; the signal detection module is used for converting the detection light into an electric signal, and the electric signal is collected through an oscilloscope in the signal detection module so as to be analyzed.

A comprehensive detection device for a radar seeker relates to the technical field of measurement and control, a target angular displacement forming device (1) is arranged on the right side of the ground of a microwave anechoic chamber (3), the target angular displacement forming device is connected with a PXI system in a measurement and control cabinet (5) located on the outer side of the microwave anechoic chamber through a serial port bus, and a window is arranged on the wall of the left side of the microwave anechoic chamber. A mounting clamp (16) on the sliding clamping table (4) clamps the radar seeker to be tested and drives the radar seeker to be tested to enter the microwave darkroom from the window, and the radar seeker to be tested is connected with a high-frequency unit and a signal switching unit in the measurement and control cabinet through cables to test a receiving loop; the device has the advantages that the size is small, the assembly is convenient and fast, the shielding darkroom can be used for accurate measurement in an inner field, the device can be portable and used in an outer field, and the depth of the single-pulse Doppler radar seeker can be detected.

The invention provides a low-scattering carrier for darkroom background level evaluation test, and relates to the technical field of target far-field electromagnetic scattering characteristic test, the low-scattering carrier is a hollow structure formed by seamless connection of an upper surface and a lower surface; the upper surface comprises a plurality of smooth curved surfaces with continuous curvatures, and the lower surface is a smooth plane; the forward direction of the low-scattering carrier is a sharp needle-shaped tip; and the lower surface is provided with a circular truncated cone hole for embedding a two-dimensional rotating top at the top end of the metal bracket and a connecting structure for connecting and fixing the two-dimensional rotating top. The forward direction of the low-scattering carrier provided by the invention is a sharp needle-shaped tip, so that the low-scattering carrier can be ensured to have a low-scattering characteristic in a relatively wide angular domain range in the forward direction, strong RCS scattering of the two-dimensional rotating top can be shielded, the RCS of the metal bracket can be measured more accurately, and a more accurate darkroom background level can be further obtained.

The invention discloses an inter-plant mechanical weeding system and method for transplanted crops, and the system comprises an imaging system which comprises an imaging darkroom; the illumination system is located in the imaging darkroom and comprises a plurality of LED lamps; the weeding knife system is located on the rear portion of the imaging darkroom and comprises a servo electric cylinder, a rolling sliding rail and a weeding blade, and the servo electric cylinder drives the weeding blade to horizontally move on the rolling sliding rail when executing actions so as to achieve avoiding of crop plants and inter-plant weeding; the GNSS positioning system is used for acquiring the position information of the current device in real time; the crawler-type chassis system is used for enabling the system to advance according to a planned route; the power distribution control box comprises a power supply, a single-chip microcomputer and a microcomputer which are arranged in the power distribution control box. According to the system and the method, crops can be accurately positioned, the weeding efficiency is improved, the system and the method can be popularized to crop transplanting, and sustainable agriculture can be realized.

The embodiment of the invention discloses a calibration test device for a semi-physical simulation darkroom array antenna and a feed system. The calibration test device is used for carrying out calibration test on the array antenna and the feed system. In one specific embodiment, the calibration test device comprises a calibration computer, a vector network analyzer, a calibration case, a three-axis turntable, a tuner, a signal source and a simulation darkroom. According to the method, the problem of calibration work of the array antenna and the feed system of the semi-physical simulation radio frequency darkroom under the low-frequency condition is solved, design experience is provided for construction of the low-frequency simulation darkroom, and preconditions are provided for semi-physical simulation test application requirements developed in a laboratory.

The invention belongs to the technical field of optical imaging and automatic detection, and particularly relates to a multispectral polarization imaging automatic scanning system. According to the system, through combination of multispectral polarization imaging and an AI algorithm, rapid positioning and classification of a target are realized, and the precision and efficiency of trace detection and material evidence identification are improved on the premise that a sample is not damaged. The multispectral polarization imaging automatic scanning system comprises a single-axis detachable slide rail, a polarization camera, a multispectral light source module, a small darkroom with an open bottom, a control panel and a main control computer. The two ends of the single-axis detachable sliding rail are supported by the adjustable tripod, the portable small darkroom is fixed below the movable end of the sliding rail through mechanical connection, the polarization camera and the multispectral light source are installed in the darkroom, and the darkroom is driven by the stepping motor to conduct single-axis scanning motion. The multispectral light source module supports switching of more than six wave bands within the wave band of 450-950 nm, wave band switching can be completed within 5 ms, and stable illumination intensity (0-500 lux) is provided. The process provided by the invention comprises the steps of equipment deployment, scanning path configuration, light source regulation and control, image acquisition, data analysis and the like, and a high-precision detection report can be quickly generated in various scenes. Through cooperative work of the control panel and the main control computer, the system realizes automatic image acquisition, target detection and report generation, is widely applied to the fields of trace detection, material evidence identification, industrial quality inspection and the like, and has the characteristics of automation, high efficiency and high precision.

The embodiment of the invention discloses a glare collaborative test method and device for a self-adaptive high beam and electronic equipment. The method comprises the steps of firstly obtaining test data of a target vehicle in a site test, performing a darkroom light test on the target vehicle based on bus data in the test data to obtain light shape data corresponding to each target moment, and then determining a target illumination range corresponding to each light shape data according to inertial navigation data in the test data, and finally, determining a glare test result of the self-adaptive high beam according to a comparison result of the target illumination range and the theoretical glare affected range which are paired in pairs. Test data obtained in a field test are recharged into a darkroom light test scene through data, and a glare collaborative test of the adaptive high beam is performed, so that a real road driving condition environment can be simulated, a target illumination range of each target moment can be accurately and efficiently determined in the darkroom test environment, and the test efficiency is improved. And the accuracy and the efficiency of the adaptive high beam glare test are improved.

The invention relates to the technical field of image sensor detection, solves the technical problem that a traditional method cannot perform multi-dimensional quality detection on an image sensor, and particularly relates to an image sensor quality detection method, device and system. The detection method comprises the following steps: constructing an image acquisition environment which keeps consistent illumination conditions when acquiring sequence images in a darkroom environment based on a sequence image acquisition device; setting exposure time, and acquiring a plurality of sequence images with different gray levels, which are output by the image sensor under different illumination intensities, in an acquisition environment; performing multi-dimensional detection on the sequence image and outputting a quality detection result; and determining whether the image sensor has defects according to the quality detection result. According to the invention, multi-dimensional detection can be carried out on whether the image sensor has defects or not, so that the image capturing performance of the image sensor under different conditions is accurately evaluated, the product performance is improved, and the image quality is guaranteed.

The invention relates to the technical field of vehicle-mounted equipment testing devices, and discloses a vibration test evaluation method and device suitable for a long-focus wide-angle vehicle-mounted camera, a plurality of cameras to be tested are installed on a six-degree-of-freedom vibration table in a darkroom, and a position-adjustable test chart card and a light source system are arranged in front of the cameras; the driving module is adopted to lighten the camera, so that remote controllable shooting is realized; configuring a test environment, and adjusting parameters such as a graphic card position and illumination; driving a camera to shoot an image card under multiple working conditions, outputting an original image sequence, and driving a module to complete a traversal test; the driving module returns a shooting result to the image analysis module, and the image analysis module analyzes imaging quality in real time, evaluates indexes such as a modulation transfer function and motion blur, and generates a multi-dimensional optical performance report; generating a multi-degree optical dimension performance report of the camera; the technical problem that a real vehicle multi-degree-of-freedom direction vibration coupling scene cannot be simulated in the prior art is solved.

The automatic feeding and discharging system is characterized in that a manipulator drives a paw to take or send a forge piece onto a heat treatment frame body on a rotary table device under the guidance of a 3D vision device, and when one side of the heat treatment frame body is filled with the forge piece or the forge piece is taken out, the rotary table device rotates to enable the other side of the heat treatment frame body to rotate to one side of the paw; and the paws repeat the work until all the work is completed. The system can be matched with an RGV, a carrier and the like, so that when the forge piece is subjected to a series of post-treatment processes such as solid solution, aging, cleaning, permeation and darkroom imaging, the post-treatment efficiency of the forge piece can be greatly improved, the labor intensity of workers is reduced, the safety of manual production is improved, and meanwhile, the product quality is improved.

The invention relates to the technical field of colorimetric analysis instruments and equipment, and particularly discloses a portable multi-light-source colorimetric analyzer and method based on an intelligent mobile platform, and the analyzer comprises colorimetric analysis software which is used for setting collection parameters, collecting sample images and analyzing sample data; a sample solution is arranged in the sample analysis darkroom module assembly, and the sample analysis darkroom module assembly is used for shielding external light interference; the light source module provides a light source for the colorimetric analyzer and is convenient for collecting sample color parameters; the cuvette is used for containing a sample solution; the intelligent mobile equipment is used for carrying out information acquisition on the sample; and the light path lens module is used for collimating and filtering the light source. The color signals in the sample detection process are captured by the camera of the intelligent mobile equipment, and the chromaticity information is quantified in combination with corresponding colorimetric analysis software, so that on-site, real-time, rapid and quantitative sample parameter detection can be realized, the detection operation difficulty in a laboratory is reduced, the method is suitable for multi-model Android intelligent equipment, and the detection efficiency is improved. And detection personnel can conveniently go out for operation.

The utility model provides a chemiluminescence immunoassay analyzer. The chemiluminescence immunoassay analyzer comprises a shell, a heating module, a bearing jig for placing a kit and a first driving module for driving the bearing jig to rotate are arranged in the shell; a plurality of heating modules are arranged at the top of the bearing jig; the kit is placed at the top of the heating module; a code scanning device used for scanning the bar code of the kit, the stirring and transferring device used for stirring analysis liquid in the kit and an analysis device used for detecting the kit are sequentially arranged on the outer side wall of the bearing jig in a surrounding mode in the anticlockwise direction; wherein a darkroom device for providing an environment required in an analysis process and a second driving module for controlling the darkroom device are arranged in the analysis device. The cost of research, development, manufacturing, operation and maintenance is reduced, use scenes are diversified, and reagent waste is avoided.

The invention relates to the field of satellite navigation, and discloses a satellite receiving terminal-oriented babysbreath microwave anechoic chamber and outdoor environment collaborative test system and method, and the system comprises a babysbreath microwave anechoic chamber, an unmanned plane platform, and a standard satellite positioning terminal disposed in the babysbreath microwave anechoic chamber. The tested satellite receiving terminal and the carrier are arranged in an outdoor environment, the upper computer is arranged outside the babysbreath microwave darkroom, and the satellite navigation signal simulation source and the GNSS time service module are arranged in the babysbreath microwave darkroom and on the unmanned aerial vehicle platform. According to a parameter instruction issued by the upper computer, the satellite navigation signal simulation sources of the babysbreath microwave anechoic chamber and the unmanned aerial vehicle platform generate satellite navigation signals used for testing a satellite receiving terminal, and the satellite navigation signals are broadcasted through respective navigation antennas. According to the invention, an indoor and outdoor collaborative test environment is effectively constructed, the test requirements of large equipment under the condition of no large darkroom are met, and the comprehensiveness and scientific rationality of test results are ensured.

The invention discloses a spectral data correction method, a substance analysis device and a digital twin system of the substance analysis device, and belongs to the technical field of lunar surface exploration. The device integrates multiple functions of element acquisition, spectral analysis, temperature compensation, weight measurement, high-definition image acquisition, three-dimensional shape reconstruction and the like, and by designing a special darkroom structure and a temperature control module, the influence of the extreme temperature of the lunar surface and stray light on the measurement precision is effectively avoided. The device adopts a Raman spectrum sensor and an infrared spectrum sensor to realize substance component detection, and corrects measurement errors caused by temperature fluctuation in real time through multispectral data preprocessing and a nonlinear temperature compensation model. Meanwhile, the multi-view image acquisition and high-density morphology reconstruction technology ensures the accurate restoration of the surface morphology and color information of the sample; the digital twin subsystem realizes remote monitoring and dynamic optimization through real-time data synchronization and virtual simulation, and improves the detection efficiency and decision precision.

The invention discloses a black-out cloth light leakage detection method and a black-out cloth light leakage detection mechanism, which do not need a darkroom environment and manual light leakage judgment, thereby liberating workers to work in a special darkroom environment, realizing full-automatic detection and automatic labeling, and being safe, reliable and easy to popularize and use. The black-out cloth light leakage detection method comprises the following steps: irradiating the front surface of a fabric by using a light source emitting invisible light; shooting the back surface of the fabric by using a camera with a visible light filter; and identifying an image obtained by shooting, and identifying a light leakage area in the image.

The invention discloses an LED dead pixel detection method, device and equipment based on laser reflection and a medium, and relates to the technical field of LED lamp detection, and the method comprises the steps: controlling a laser light source to irradiate a to-be-detected LED lamp; collecting a reflected light signal; preprocessing the reflected light signal to obtain an input signal; and judging whether the LED lamp is normal based on the input signal. According to the invention, laser reflection detection is adopted to replace traditional optical imaging, the monochromaticity and directivity of laser are utilized to overcome ambient light interference, and a darkroom or complex filtering is not needed. Meanwhile, the combination of the laser light source and the photoelectric sensor significantly reduces the cost of the system, and avoids the use of a high-resolution camera. The laser can focus a micron-sized light spot, and the sub-pixel-level micro structure abnormity can be identified with high precision by analyzing the energy change of a reflected light signal. More importantly, according to the method, non-luminous defects such as packaging cracks and colloid stripping can be synchronously detected by capturing the reflection characteristics of the physical structure of the LED instead of depending on the luminous state of the LED, so that the defect detection accuracy is effectively improved.

The embodiment of the invention discloses an air interface testing device and an air interface testing method, and belongs to the technical field of communication. The air interface testing device comprises a testing module which comprises a microwave darkroom and is used for providing a testing environment for equipment to be tested; the integrated heat preservation rotary table module is arranged in the microwave darkroom and comprises an adjustable cover body structure, and the cover body structure is used for maintaining the environment state of the equipment to be tested; and the environment control module is arranged outside the microwave darkroom, is connected with the integrated heat preservation turntable module through a heat preservation pipeline to form a three-axis structure, and is used for cooperating with the integrated heat preservation turntable module to adjust the test environment of the to-be-tested equipment. According to the embodiment of the invention, the environment control module and the integrated thermal insulation turntable module are designed in an integrated manner, so that on the premise of ensuring the functions of each module, the test freedom degree is improved, the test scene is expanded, and the air interface test of the to-be-tested equipment under the multi-environment condition can be realized.

The invention discloses a near-field test method, which is characterized in that sampling points are arranged on a near-field plane, plane near-far field conversion is carried out according to field values of the sampling points, the sampling points are non-uniformly distributed, the distance between the sampling points is in positive correlation with the test distance of the sampling points, and the test distance is the distance between the positions of the sampling points and the original point of an area to be tested. The invention further discloses a near-field test system which uses the method and comprises a data processing system, a control system and a darkroom. The number of sampling points is reduced, and the problem that an existing testing method is high in cost is solved.

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 utility model relates to a limiting device used for adjusting the angle of a shielding door of a darkroom shielding room, and belongs to the technical field of shielding door angle limiting. The limiting device comprises a guide rod, a limiting block, a door leaf fixing piece, a door frame fixing piece and a pin shaft, the door leaf fixing piece is installed at the top of a door leaf, and the door frame fixing piece is installed on a door frame; one end of the guide rod is rotationally connected to the door frame fixing piece through a pin shaft, a penetrating groove is vertically formed in the middle of the guide rod in the length direction in a penetrating mode, the door leaf fixing piece is movably arranged in the penetrating groove, the limiting block is adjustably fixed in the guide rod, the door leaf fixing piece is arranged between the limiting block and the door frame fixing piece, and the door leaf fixing piece can abut against the limiting block. The door opening device is simple in structure and convenient to use, and a user can adjust the maximum door opening angle of the door at any time according to own needs; when the door reaches the limit position, the limit position of the door is well controlled due to the existence of the limiting device, and the door leaf is prevented from being damaged by touching other things.

The utility model discloses an automatic whole plant phenotype imaging system, which comprises an imaging darkroom provided with a channel penetrating through the imaging darkroom, and two ends of the channel are respectively provided with a room door; the conveying mechanism is arranged in the channel; the loading box is arranged on the conveying mechanism and can be driven to move in the extending direction of the channel, a plurality of cultivation boxes are arranged in the loading box, and one side of each cultivation box is a transparent side wall; the moving mechanism is arranged in the imaging darkroom; the first phenotype imaging mechanism is arranged in the imaging darkroom and faces the detection position; the second phenotype imaging mechanism is arranged in the imaging darkroom and faces the detection position; and a control mechanism. According to the utility model, the phenotype of the whole plant can be automatically detected, and the data information of the root system and the plant is in one-to-one correspondence every time, so that the corresponding different forms of the root system and the plant in different periods can be fully reflected.

1. The name of the product of this design: Measuring darkroom (fast). 2. Purpose of this design product: to implement navigation antenna layout to simulate navigation constellations. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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 invention belongs to the technical field of fire fighting equipment, and particularly relates to a high-altitude fire fighting platform for a large darkroom, which mainly comprises a door frame fixedly arranged on the side wall of the darkroom, and a fire fighting door arranged on the outer side of the darkroom, rotationally arranged relative to the door frame and arranged on the outer side of the darkroom; the fire-fighting platform is arranged on the door frame, a wave-absorbing material is arranged on the fire-fighting platform and covers the door frame, and a preset distance is formed between the edge of the wave-absorbing material and the edge of the fire-fighting platform; the fire-fighting platform comprises a pedal plate and a protection plate, one side of the pedal plate is hinged to the door frame, and the protection plate is hinged to the other side of the pedal plate; when the fire-fighting platform is in an unused state, the pedal plate and the protection plate form a shielding surface, and the wave-absorbing material can cover the edge of the door frame; when the fire-fighting platform is in a use state, the pedal is in a horizontal state, and a preset included angle is formed between the protection plate and the pedal. By the adoption of the structure, a high-altitude fire extinguishing site can be provided for firefighters, meanwhile, the shielding effect of the darkroom can be guaranteed, and the darkroom is very practical.

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.