246 results about "Dark chamber" patented technology

Methods and apparatus for evaluating the quality of an environment or process by measuring light emitted from a bioluminescent sample containing ATP, ADP, or alkaline phosphatase. The apparatus comprises a sample collection and analysis system used to collect a sample, mix reagents, react the sample, and collect it in a measurement chamber. The system includes an instrument having a photon detection assembly for use with the sample testing device and one or more probe assemblies that optically cooperate with the instrument. The instrument includes a dark chamber with a reflective interior surface which may be concave or preferably spherical, and a photon detection sensor such as a multi-pixel photon counter sensor. A substantially transparent portion of the probe assembly, and liquid contained therein, focus bioluminescence toward the photon detection sensor.

The invention relates to a test method of the mobile terminal near filed radiation and the device thereof; wherein, the device includes a spectroanalyzer (51), a RF cable (32) and an electromagnetic wave receiving detector (52). The method includes the steps of: connecting the spectroanalyzer and the detector (52) via RF cable (32); configuring the spectroanalyzer (51), collecting the near field radiation continuous interference high frequency energy received by the detector (52); 1.4) adhering to and scanning the surface of the mobile terminal (14) by the electromagnetic wave receiving detector (52) till all the region is scanned over. In the method and the system thereof, the screening chamber replaces the microwave non-reflection dark chamber, and the trial test is carried out for product before the formal radiation continuous interference test so as to provide a favorable condition according to the conversion relationship of the near / distant field of the radiation electromagnetic field. The cost is saved, and the development period is shortened.

The invention relates to a device suitable for studying phototactic ethology of minitype fishes, and is characterized in that an aquarium box is placed in a dark chamber; the outer part at one end of the aquarium box is provided with an adjustable light source; the bottom of the aquarium box and other parts except for the periphery of the adjustable light source end are not light transmitting; the aquarium box is internally provided with a dividing ruler; the dividing ruler divides the aquarium box into a plurality of regions according to the illumination intensity attenuation direction, and the different regions are divided by a division scale region; a guide rail is arranged deadly above the aquarium box; the guide rail is provided with a plurality of cameras corresponding to the center and the boundary of each region; an underwater illuminometer is suspended on the guide rail, and can move randomly in the aquarium box along the length direction of the guide rail; and a computer remote control terminal is connected with the cameras, and is used for controlling the moving of the cameras and tracking and recording the swimming paths of the fishes. The device suitable for studying phototactic ethology of the minitype fishes provided by the invention can study the phototactic behavior of the minitype fishes, and can remove the interference of artificial factors, thus the studied results are accurate and reliable.

The invention relates to a full electric wave darkroom possessing both aerial radio frequency testing and EMC testing abilities, belonging to the technical field of aerial radio frequency testing darkroom and full electric wave darkroom design for radio equipment. And it comprises shielding casing, wave absorption material layer bonded with inner wall of the casing, false wall, darkroom door, turntable and tested equipment supporting device installed in the casing, antenna bracket system, vent illuminating device, filter, safe and electrical device and interface board to be connected with a tester, where the shielding casing is L-shaped, on two sides of the L shape are OTA testing darkroom and full electric wave darkroom, mutually vertical and interconnected, and a set of turntable and tested equipment supporting device is arranged at the junction of the two darkrooms. And it can reduce darkroom construction cost and raise utilization ratio.

Provided is an apparatus for measuring a read range between a tag and a reader, which includes an electromagnetic anechoic chamber formed by connecting at least one unit cell in a row, the unit cell having an electromagnetic wave absorbent provided on an inner wall of each unit cell, an electromagnetic generation portion located at the unit cell at an end of the electromagnetic anechoic chamber and transmitting an electromagnetic wave through an antenna, and an electromagnetic measurement portion which measures a field strength of the electromagnetic wave transmitted from the electromagnetic generation portion using an electric field probe moving in the electromagnetic anechoic chamber.

The invention discloses an insect phototaxis testing device, which consists of an LED light source lamp tube, a power control box and a phototatic reaction box. The phototatic reaction box is divided into four areas including a dark chamber, a first phototatic channel, a second phototatic channel and a phototatic chamber via two partition boards, light intensity of a phototatic path from an insect box of the dark chamber to a light source is gradually and continuously increased, and the process of field insects trending to a trapping light source from a far region to a near region in a natural night environment can be simulated conveniently. The insect phototaxis testing device resolves the problem that a present insect phototaxis testing device is low in practicality, expensive in price or cheap in price but poor in practicality, and simultaneously difficult to carry out parallel comparison tests. Compared with the prior art, the insect phototaxis testing device has the advantages of low cost, high practicality, large spectrum selection range, more spectrum wave crests, high standardization degree, capability of carrying out comparison tests, and the like.

A method and system for extracting radar scattering feature data based on plasma near-field testing are disclosed. An ISAR imaging principle is adopted in a microwave anechoic chamber simulating vacuum environment, and a one-dimensional scanning near-field test method is employed to test scattering performance of a tested target. A near-field scattering 2D image of the tested target is obtained, and near-field correction techniques are used to correct errors of influence error exerted by spherical waves on RCS performance tests. A scattering center is adopted to achieve far-field RCS extrapolation of the tested target, and radar scattering cross section far field data of the test target is obtained. Via the test and the data extraction method, overall target radar cross section data of a plasma-coated aircraft can be provided for a special environment that generates plasma clouds and for peculiar diffusion and ionization characteristics of plasma. A test angle covers a wide angle rangeof -30 degrees to 30 degrees, test accuracy is higher than 2dB, and therefore a test method is provided for plasma stealth technology research and stealth performance evaluation.

A device integrated in a pair of spectacles for the diffusion of virtual images into a user's visual field superposed onto his perception of ambient images. This device includes a display unit and an optical system comprising a mirror and a terminal lens, which comprise virtual image diffusion means, assembled as a prism and attached in a mobile manner laterally to a facial mounting via a chassis which accommodates them in proximity to one another and which is arranged in a dark chamber. These arrangements are such that the virtual images are diffused biased towards the user's pupil from a lateral zone of the mounting, optimizing the use of the light intensity of the display unit.

A method for measuring reflectivity of microwave absorption material applies network analyzer being set with test cable, switching over connector, coaxial air line and metal short circuit as well as being able to directly measure s parameter of microwave component as measuring system to carry out reflectivity measurement on microwave absorption material sample of concentric ring form in matching to size of coaxial air line.

The invention is suitable for the technical field of display device detection, and discloses a detecting system and method based on machine vision. The detecting system based on the machine vision comprises a machine body with a dark chamber. A feeding opening is formed in the machine body, a conveying device is connected to the machine body, and an imaging device is arranged in the dark chamber and connected to the machine body through a movement adjusting device. The movement adjusting device comprises a longitudinal adjusting part used for driving the imaging device to get close to or far away from the conveying device, and further comprises a horizontal first-direction adjusting part used for driving the longitudinal adjusting part and the imaging device to slide in the direction from one end of a display device to the other end of the display device. The detecting system based on the machine vision is adopted for the detecting method based on the machine vision, and the detecting method based on the machine vision includes the following steps of feeding, detecting and discharging. According to the detecting system and method based on the machine vision, an imaging part is convenient to adjust and can be compatible with detecting areas with different sizes, and adaptability is good.

A dark chamber is adapted to accommodate smoke particles. A photo emitter and a photo detector are disposed in the dark chamber. In a first region, a region where light emitted from the photo emitter passes and a region where the photo detector is capable of detecting light are overlapped, so that light emitted from the photo emitter and scattered by the smoke particles is detected by the photo detector. A photo converger converges light passed through the first region at a second region where is an outside of the first region.

The invention discloses a device and a method for measuring liquid jet on an outermost boundary. The device comprises a computer, a camera, a test section and a laser generator, jets are injected in the test section, laser sheet-light emitted by the laser generator irradiates on jet droplets, a focal plane of the camera, the laser sheet-light and an observing plane are on a same plane, the camera is used for shooting droplets in a laser plane, a camera shooting face and a laser sheet-light incident plane are transparent, the measuring device is disposed in a darkroom environment, and the computer collects shot images and binarize the images to obtain a jet boundary figure and calculates physical boundary distance information of the jet boundary figure. The method includes: A, demarcating the measuring device; B, utilizing the camera to shoot the droplets, and obtaining image results; C, converting the image results into a grayscale map, and extracting a boundary; and D, calculating the physical distance information of the jet boundary. By the device and the method for measuring liquid jet on the outermost boundary, quantitative information of the droplets, formed after the liquid jets are crushed, on the outermost boundary in a whole flow field observing plane, can be obtained.

The invention provides an anechoic chamber and a using method thereof. The anechoic chamber comprises a bottom surface, first to fourth side walls, and a top surface. The first to fourth side walls encircle a frame body. Metal plates used for shielding electromagnetic waves are arranged outside the first to fourth side walls, the bottom surface and the top surface. Wave absorbing devices used for absorbing electromagnetic waves are arranged on the inner walls of the first to fourth side walls and the top surface. A first turntable and a second turntable used for placing a tested object are arranged on the bottom surface. First to third antenna towers which are movable and are used for assembling an antenna respectively are mounted on the bottom surface. The invention further provides a method for performing electromagnetic compatibility test by using the anechoic chamber. The anechoic chamber and the using method thereof of the invention meet the requirements of electromagnetic compatibility test of most products nowadays.

The invention discloses an LED illumination light source comprehensive measurement instrument. The main hardware is composed of an LED illumination light source operation table (1), a sensitization measurement table (2), a telescopic optical darkroom passageway (3) and a microcomputer main control station (4). An LED illumination light source to be measured is fastened to an LED illumination light source installation universal support in the operation table, and a polar coordinate double-shaft drive servo mechanism drives the LED illumination light source on the polar coordinate double-shaft drive servo mechanism to rotate in the horizontal direction and to pitch. The telescopic optical darkroom passageway is used for adjusting the distance between the LED illumination light source to be measured and a sensitization measurement probe. Embedded type microcomputers of all subsystems execute various types of operation, collect and transmit data and are used in cooperation with the microcomputer main control table for achievement of the measured data comprehensive processing function and the image processing function. The LED illumination light source comprehensive measurement instrument has the advantages that the LED illumination light source with any model, any wave form and any power consumption can be really measured in a relatively small space, a normal measurement parameter table is provided, and a three-dimensional analysis graphic based on tricolor light waveforms and four-dimensional dynamic video are provided as well.

The invention relates to a conduction electromagnetic interference experimental platform for an electric automobile motor driving system. The conduction electromagnetic interference experimental platform comprises an electric network, a power supply, a positive electrode artificial power supply network, a negative electrode artificial power supply network, a motor controller, a motor, load equipment, the ground, a low-relative-dielectric-constant support object, a grounding flat plate, a test desk, a shielding chamber or a dark chamber, test equipment, motor control signals, a motor support frame and a load equipment support frame. The conduction electromagnetic interference experimental platform has the advantages that the conduction electromagnetic interference experimental platform for the electric automobile motor driving system is built, in addition, the motor is loaded for testing conduction voltage and conduction current generated by a system under different work conditions, and an effective test platform and test method is provided for studying the electromagnetic interference generating mechanism of the motor driving system and inhibiting the electromagnetic interference generated by the motor driving system.

A combination smoke and heat detector which allows, in spite of a simple structure, light emitted from an indication lamp to be visually confirmed from a wide range of directions. The combination smoke and heat detector (100) includes a body base (10), a printed circuit board (1), a thermosensitive element (2), a dark chamber (3), an indication lamp (4) mounted to the printed circuit board (1), a protective cover (30), and a bar-like light guide (5) for guiding light emitted from the indication lamp (4) to the outside of the protective cover (30). The light guide (5) passes through a light guide through-hole (35) formed in the protective cover (30) so as to be mounted therein, with one end surface thereof facing the indication lamp (4), and another end surface thereof protruding to the outside of the protective cover (30) by a height substantially equal to or larger than a protruding height of the dark chamber (3). Further, the light guide (5) is arranged opposite relative to the thermosensitive element (2), with the dark chamber (3) being sandwiched therebetween.

A dark chamber is adapted to accommodate smoke particles. A photo emitter and a photo detector are disposed in the dark chamber. In a first region, a region where light emitted from the photo emitter passes and a region where the photo detector is capable of detecting light are overlapped, so that light emitted from the photo emitter and scattered by the smoke particles is detected by the photo detector. A photo converger converges light passed through the first region at a second region where is an outside of the first region.

A dark chamber for the test of cell phones comprises an electromagnetic wave-absorbing shell, an electromagnetic shielding shell, a receiving antenna and a cell phone rotating table. The electromagnetic shielding shell is a square one formed by a strengthened stainless steel plate with the thickness to be 1.5 mm, and the electromagnetic wave-absorbing shell is a shell made of flat wave-absorbing materials. The electromagnetic wave-absorbing shell is arranged around the inside of the electromagnetic shielding shell and provided with an open door in the same position of the electromagnetic wave-absorbing shell for putting the cell phone in. The cell phone rotating table is arranged on the bottom at one end in the electromagnetic wave-absorbing shell, and the top of the cell phone rotating table is on the same plane with the open door through which the cell phone is put on the cell phone rotating table. The receiving antenna is arranged on the side wall at the other end in the electromagnetic wave-absorbing shell, and the installing position of the receiving antenna on the side wall of the electromagnetic wave-absorbing shell is on the same plane with the top of the cell phone rotating table.

The invention discloses a method for recognizing a synchronous reflection point position in the compact field antenna measurement. The method comprises the steps of building a three-dimensional rectangular coordinate system in a dark chamber of a compact field; determining the position of a compact field feed source in the three-dimensional rectangular coordinate system; determining the position of the compact field reflecting surface according to the position of the compact field feed source and the position of a testing area; building an ellipsoidal surface in the compact field dark chamber by using the position of the compact field feed source and the position of an antenna to be measured, in the testing area as the focuses and the length of the transmission path of the compact field feed source from the reflecting surface to the antenna to be measured, at any position in the testing area, wherein the part in which the ellipsoidal surface is intersected with each surface of the compact field dark chamber and an object in an inner space of the compact field dark chamber is the position of a synchronous reflecting point. With the adoption of the method, the position of the synchronous reflecting point that a reflecting signal and a direct wave signal in a compact field synchronously reaches a receiving antenna.

A solar cell examination apparatus for examining a solar cell by applying a current in the forward direction to the solar cell thereby to cause EL emission of the solar cell is disclosed. The examination apparatus has a simple structure and is produced at low cost. A transfer device for transferring a stack of constituent members of a solar cell to be measured before lamination thereof to the examination apparatus is also disclosed. The stack of the constituent members is prevented from being displaced. The solar cell examination apparatus includes a dark chamber (110) having an opening (or a transparent plate) (112) in the top surface, a support means which is provided on the top surface (111) of the dark chamber and on which an object to be measured is placed, and a camera (120) provided inside the dark chamber (110). The solar cell examination apparatus further includes a light-shielding cover for interrupting light entering the dark chamber through the opening and through the gap between the opening (112) and the solar cell placed on the support means. The transfer device includes a pair of lines of transfer members (two lines) connected in an endless form in the transfer direction. Each transfer member has a wall lower than the thickness of the stack of the constituent members such as a transparent substrate of the solar cell being transferred. The two lines of transfer members guide the stack of the constituent members to prevent the constituent members from being displaced during the transfer.

The invention relates to an apparatus for detecting mechanoluminescent performance of a luminescent material. The apparatus comprises a dark chamber, an objective table, an ultraviolet lamp, a pressure signal monitoring system, and an optical signal monitoring system; the dark chamber comprises an internal layer dark chamber and an external layer dark chamber, the internal layer dark chamber is placed at one side of the bottom of the external layer dark chamber, and the ultraviolet lamp is arranged in the external layer dark chamber and positioned over the internal layer dark chamber; the pressure transducer is arranged in the external layer dark chamber, and opposites a force application port over the external layer dark chamber, a pressure signal output port is arranged at an outer wallof the external layer dark chamber, and the pressure transducer, a pressure transmitter and the pressure signal output port are electrically connected in order; an objective table is arranged over theinternal layer dark chamber, a sample installation groove is arranged at the objective table, the sample installation groove and the force application port over the external layer dark chamber, and the pressure transducer are coaxially arranged. The apparatus has the advantages that simultaneous and synchronous monitoring is carried out, a pressure signal of mechanical excitation force and the generated optical signal are recorded, and the monitoring result is accurate. The apparatus belongs to the technical field of detection.

The invention discloses a power station boiler membrane panel welding joint blind area X ray detection method. The method comprises the following steps: firstly, placing a ray machine on one side of a to-be-radiated workpiece; adhering a camera bag containing films to the other side of the workpiece, and adhering the back of the camera bag to an anti-scatter lead plate; then, regulating the position of the X machine so as to regulate an included angle between a radiating centerline and the plane of a heated surface tube to 40-50 degrees; acquiring a welding joint blind area X ray image film by virtue of the X machine; and finally, processing the X ray image film in a darkroom. According to the detection method disclosed by the invention, the XXQ-2505 ray machine is adopted to detect power station boiler membrane panel welding joint blind area X ray and an appropriate radiating angle is selected by virtue of inclined radiation so as to achieve a purpose of detecting out defects; when radiating the membrane panel welding joint, an appropriate angle is kept between the centerline of a ray bundle and the drainage plane of the heated surface tube, so that the definition, sensitivity and welding joint opening distance of a blind area image on a photographic plate can achieve standard requirements, and assessment on defects is not affected.

The invention discloses an analysis and measurement method for electromagnetic radiation of a voltage driven radiation source. The method is used for analyzing parameters of a PCB (printed circuit board) circuit and a radiation cable test circuit and measuring near field radiation characteristics of the circuits. Considering a small-scale model of a PCB circuit radiation cable, a relation between radiation electromagnetic interference noise and the parameter of the PCB circuit can be established according to a relation between E field intensity of a radiation electromagnetic field and common mode current ICM of the radiation cable; the estimated radiation electromagnetic field is multiplied by 2 to compensate ground reflection under the worst condition in a semiwave darkroom; CM current between the PCB circuit and the radiation cable can be expressed with equivalent CM voltage to obtain the maximum radiation field; a relation between a common mode voltage signal and a PCB voltage signal meets the formula as described in the specification; Ct-c is distributed capacitance between the radiation cable and a PCB; Cin is input capacitance of the radiation cable; and the magnitude of the radiation electromagnetic interference noise can be measured, presstimated and calculated by only measuring circuit parameters in the PCB.

An apparatus for processing and packaging a photographic film has a film supply unit for unreeling and cutting off a film roll of an elongate photographic film, and supplying a sized film, a film winding unit for winding the sized film around a spool thereby to produce a roll, a cartridge production unit for crimping a cap on an end of a rounded barrel plate thereby to produce a one-end-open cartridge, an assembling unit for inserting the roll into the one-end-open cartridge and thereafter crimping a cap on an opposite open end of the one-end-open cartridge thereby to produce a film-contained cartridge, and an encasing unit for placing the film-contained cartridge into a case and attaching a case cap to an open end of the case thereby to produce a packaged product. The film supply unit, the film winding unit, and the assembling unit are accommodated altogether in a dark chamber. The apparatus is relatively simple in overall arrangement, and allow various types of operation to be carried out easily and efficiently.

The invention discloses a laser compensation method for high-frequency linear phase detection of plane wave of a compact range. The laser compensation method comprises the following steps: building a three-dimensional rectangular coordinate system in a dark chamber of a compact range to be detected; determining an initial position of a scanning frame according to a relation between position of a feed source, position of a reflective surface and position of a test area; adjusting a vertical attitude angle and a horizontal attitude angle of the scanning frame and enabling phase detection trend to meet the requirement on the performance of the plane wave; arranging a laser target on a probe antenna of the scanning frame, arranging a laser tracking instrument between the scanning frame and the reflective surface, capturing the position of the laser target in real time by the laser tracking instrument to obtain position information and position deviation delta x of the scanning frame; obtaining a phase deviation result of the plane wave according to a relation between light speed, working frequency and phase, and compensating the deviation result into a phase detection result in real time. The laser compensation method can be used for meeting the requirements on phase detection of the plane wave of the compact range at the high frequency and improving the phase detection accuracy of the plane wave of the compact range.

The invention discloses an automatic punching and tapping transmission mechanism for a rubber dark chamber. The automatic punching and tapping transmission mechanism comprises a bottom punching transmission part of the rubber dark chamber mounted on a stander; the bottom punching transmission part feeds the rubber dark chamber into an A punching die, and after the bottom is punched, a side transmission part feeds the rubber dark chamber into a B punching die; a rotating jacking device drives the rubber dark chamber to rotate; after four side surfaces of the rubber dark chamber are punched, a tapping transmission part feeds the rubber dark chamber into a tapping mechanism for tapping two threaded holes of the rubber dark chamber; and after the processing is finished, an unloading cylinder pushes the rubber dark chamber into a collection box. By the scheme, the rubber dark chamber is fed into a punch press to be punched and into a tapping machine to be tapped through the automatic punching and tapping transmission mechanism instead of manual work, so the automatic flow line processing is realized, the precision of punching and tapping is improved, the rejection rate of the rubber dark chamber is lowered, the working efficiency is improved, the labor intensity of workers is reduced, the labor personnel is reduced, and the production cost is lowered.

The invention provides an optical laminated body, a polarizer, a display device and a manufacturing method of the optical laminated body. The invention aims to provide a structural body having dazzle prevention, dark excellence in a bright chamber and capable of achieving high dark chamber contrast, an optical laminated body with excellent manufacturing stability and a manufacturing method of the optical laminated body. Furthermore, the invention aims to provide a polarizer having the optical laminated body and a display device. The optical laminated body provided in the invention is characterized in that an optical functional layer is laminated on a translucent matrix. The optical functional layer comprises a first phase having relatively large amounts of resin components, a second phase having relatively large amounts of inorganic components and particles, wherein, the second phase is concentrated on the periphery of the particles.

The invention relates to a planeness detecting device for surface-mounted welding plates of electron components. A dark chamber is fixed on a machine frame; a rotating platform which is capable of loading and rotating a detected product and providing a light source, a vision system for taking and transmitting an image of the detected product and a manipulator for loading and unloading the detected product automatically are arranged in the dark chamber; a loading conveyer belt passing through the dark chamber is arranged on one side of the rotating platform, and a guide slot for unloading defective products and a conveyer belt which passes through the dark chamber and is used for unloading good products are arranged on the other side of the rotating platform sequentially; the vision system, the manipulator, the rotating platform, the loading conveyer belt and the conveyer belt for unloading the good products are respectively and electrically connected with an industrial personal computer; and the industrial personal computer analyzes the image transmitted by the vision system and controls the manipulator, the rotating platform, the loading conveyer belt and the conveyer belt for unloading the good products to move respectively. In the planeness detecting device, the manual vision system is combined with a full-automatic loading and unloading system to realize the planeness detection of the surface-mounted welding plates of the electron components, so the planeness detecting device has high speed and reliability, and can save large amount of labor and material resources.

The invention provides light-resistant detecting equipment and a light-resistant detecting system. By the aid of the light-resistant detecting equipment and the light-resistant detecting system, the technical problems of poor light-resistant effects and low detection efficiency of light-resistant detecting equipment in the prior art can be solved. The light-resistant detecting equipment comprises a shell and a cover plate. The shell is provided with an accommodating cavity, partition components are arranged in the accommodating cavity, the accommodating cavity can be divided into a plurality of accommodating units by the partition components, the accommodating units are not communicated with one another, and observation detection holes for external detecting devices are formed in the accommodating units; openings are formed in the accommodating cavity, and each opening is used for arranging a reaction cup with illuminants in the corresponding accommodating unit; the cover plate is used for closing the openings, so that dark chambers can be formed by the accommodating cavity. The light-resistant detecting equipment and the light-resistant detecting system have the advantage that the light-resistant detecting equipment is used for providing a detecting environment for the illuminants, so that detection can be facilitated.