1222 results about "Photoswitch" patented technology

There is provided an optical scanning type photoelectric switch capable of preventing interference with another photoelectric switch by use of its own capability, wherein, as for light projection pulse periods of the first and second optical scanning type photoelectric switches, the period is set to 30 μs in the first optical scanning type photoelectric switch while the period is set to 33 μs in the second optical scanning type photoelectric switch 1B, the light projection pulses have the same pulse width, and by setting the light projection periods different between the first and second optical scanning type photoelectric switches, even if mutual interference occurs between any optical axes, a phase difference of 36 degrees in rotation period is generated therebetween in a next scan, thereby preventing occurrence of the interference in succession in a plurality of times of scanning.

The invention relates to a device and a method for acquiring product coded identifier information. The device comprises a data acquisition unit, a data identification unit and a control unit, wherein the data acquisition unit is positioned above a convey belt and comprises an image device, a lighting device and a position photoelectric switch; the image device is used for photographing product coded identifier to obtain image data; the lighting device is used for irradiating the product coded identifier; the position photoelectric switch is used for sensing the position of the product on the convey belt; the data identification unit is used for identifying and processing the image data acquired by the data acquisition unit to obtain the product coded identifier information and storing the information and is also connected with the image device and the control unit respectively through a data line; and the control unit is used for controlling the data acquisition unit, and connected with the data identification unit, the image device, the lighting device and the position photoelectric switch respectively through data lines. The invention also provides the method for acquiring the product coded identifier information.

A photoelectric switch reduces a cost load of a user while ensuring its protection function inherent to safety equipment without impairing its safety function, and an optical scanning type photoelectric switch is provided with a muting function settable by the user, which is a function of temporarily invalidating sensing of part or the whole of a protection area, and is provided with two output systems, with respect to each of which the muting function is settable and on each output of which an inspection signal is superimposed at a different timing in a time-division manner.

The invention discloses a garbage can capable of automatic classifying based on visual identification and a classifying method. The garbage can comprises a garbage throwing opening, a first photoelectric switch sensor, an identifying and classifying tray, second photoelectric switch sensors, sub garbage cans, an image identification component, an STM32 controller, a double-path stepping motor driver and a garbage can shell, wherein the garbage throwing opening is formed in the side wall of the garbage can shell; the first photoelectric switch sensor is arranged in the garbage throwing opening;a plurality of sub garbage cans are arranged in the garbage can shell; a second photoelectric switch sensor is mounted in a can opening position of each sub garbage can; the identifying and classifying tray is arranged in the garbage can shell and is located above the sub garbage cans; the identifying and classifying tray comprises a garbage tray, a V-shaped baffle stepping motor, a camera, a V-shaped baffle, a support frame, a rotary baffle stepping motor and a rotary baffle. According to the garbage can, the camera is used for collecting garbage images; a TensorFlow deep learning frameworkis adopted; through transfer training of a model, the accuracy rate of garbage identification is increased.

The invention discloses a kiwi fruit picking end actuator which comprises a clamping mechanism, a rotary picking mechanism, an approaching mechanism, a sensing system and a control system. The clamping mechanism comprises a scissor structure formed by front arc-face finger a rear arc-face finger and is capable of separating and reliable gripping of adjacent fruits. The rotary picking mechanism uses a reduction stepping motor to drive the clamping mechanism to rotate so as to separate stems and fruits. The approaching mechanism drives the front finger to approach the fruits. The sensing system comprises a pressure sensor, an infrared photoelectric switch, a Hall position sensor and a limit switch which are respectively used for detecting a clamping force threshold, fruit positions and mechanism reset information and controlling rotation angle of the reduction stepping motor, wherein the pressure sensor and the infrared photoelectric switch are mounted on the inner side of the front finger, the Hall position sensor and the limit switch are mounted on a frame. The control system comprises a single-chip microcomputer and a stepping motor controller and is used for controlling the whole system by the aid of the sensing system. By the actuator simple in mechanical structure, accurate positioning, separating and reliable gripping of the fruits are achieved, and lossless picking of the fruits is realized.

The invention relates to a measuring device of the noise characteristics of laser, consisting of a conversion system of noise fluctuation of the laser and a detecting and processing system. The measuring device mainly comprises a circulator, a 3*3 coupler, a first photoswitch, a second photoswitch, optical fiber, a first Faraday rotation reflector, a second Faraday rotation reflector, a frequencyshifter, a first photoelectric detector, a second photoelectric detector, a third photoelectric detector, a fourth photoelectric detector, a data acquisition card and a computer. The measuring devicedisclosed by the invention has the capability of simultaneously measuring the noise characteristics comprising the intense noise power spectral density, the phase noise power spectral density, the frequency noise power spectral density, the line width and the Allen variance with frequency instability, of the laser, has the characteristics of high integration level and simpler and more concise structure, has no any limitation to the laser to be measured without an extra active control measure, thereby increasing the measuring reliability of the noise characteristics of the laser.

The invention discloses a multifunction three-dimensional displacement and topography laser interferometry system, belonging to the technical fields of photo mechanics, engineering material, structural member deformation, displacement testing, topography measurement and the like. The invention consists of a laser device, a image collecting and shooting system, a light split coupler, a light split photoswitch, a DC electrical source controller, a three-dimensional laser interference optical path system, a loading charging floor for putting test pieces, a bracket adjusting system, a computer and the like. The laser interferometry system can realize high-precision measurement of u, v and w displacement fields, and displacement measurement sensitivity can reach wavelength magnitude; the laser interferometry system has two displacement measurement modes of digital holography and electronic speckle pattern interferometry, and also has the mode of digital holographic measurement of surface topography. The invention can realize the adjustment of degrees of freedom on multiple directions by using the bracket adjusting system, brings convenience for system imaging and measurement adjustment, and has the characteristics of convenient use, compact structure, high measurement precision and the like; because the system is provided with a phase shifting device, the displacement measurement precision of the system of the invention can reach nanometer magnitude after phase shifting treatment.

The invention belongs to the technical field of precision instrument manufacture and measurement and provides a two-dimensional microscale measuring device and method based on a three-core fiber bragg grating. The device comprises a wideband light source, a spectrum analyzer, an optical circulator, a control computer, a multiplex photoswitch and an external reference grating. The multiplex photoswitch is communicated with a three-core optical fiber fan-out device through three single mode optical fibers respectively. One end of the three-core optical fiber is connected to the three-core optical fiber fan-out device, a three-core fiber bragg grating probe is fixedly arranged at the other end of a three-core fiber through a probe clamping device, and the three-core fiber and the three-core fiber bragg grating probe are connected to form a channel. The method comprises the following steps that the control computer controls the multipath photoswitch to switch optical paths, the spectrum analyzer is utilized to respectively measure reflectance spectrums of the fiber bragg grating, and two-dimensional microscale measurement of non-temperature coupling is achieved by utilizing the differential data processing algorithm. The two-dimensional microscale measuring device has the advantages of being high in precision, small in contact force and not influenced by the shadowing effect. In addition, the service life of the probe is long.

The invention belongs to the technical field of precision instrument manufacture and measurement and provides a two-dimensional microscale measuring device and method based on twin-core fiber bragg grating. The device comprises a wideband light source, a spectrum analyzer, an optical circulator, a control computer, a multiplex photoswitch and an external reference grating. Two single mode fibers respectively enable the multiplex photoswitch to be communicated with a double-core fiber fan-out device. One end of a double-core fiber is connected to the double-core fiber fan-out device, the other end of the double-core fiber is fixedly provided with a double-core fiber bragg grating probe through a probe clamping device, and the double-core fiber and the double-core fiber bragg grating probe are connected to form a channel. The method comprises the following steps that the control computer controls the multiplex photoswitch to switch light paths, the spectrum analyzer is utilized to respectively measure reflectance spectrums of the fiber bragg grating, and two-dimensional microscale measurement of non-temperature coupling by utilizing the differential data processing algorithm is achieved. The two-dimensional microscale measuring device and method based on the twin-core fiber bragg grating have the advantages of being high in precision and small in contact force. In addition, the two-dimensional microscale measuring device is not influenced by the shadowing effect, and the service life of the probe is long.

The invention discloses a servo-type multi-station rotary table and a precision property testing device thereof. The rotary table comprises a rack and a fixed disc arranged on the rack, a multi-station rotary disc is installed on the fixed disc, a servo motor is installed on the rack, and the servo motor is in transmission connection with the multi-station rotary disc through a harmonic speed reducer; a photoelectric switch is installed between the multi-station rotary disc and the fixed disc, a motor encoder is installed on an output shaft of the servo motor, and an original point reset device is formed by the photoelectric switch and the motor encoder. The testing device comprises an angle encoder testing device and an eddy current displacement sensor testing device. According to the servo-type multi-station rotary table and the precision property testing device thereof, by means of the rotary table, the intermittent movement of the multi-station rotary disc under different numbers of divisions, different movement-static rates, different movement directions and different accelerating and decelerating control modes can be achieved; by means of the precision testing device, measurement of parameters such as fine division errors, dynamic division errors and repetitive errors of the multi-station rotary disc can be achieved.

The invention belongs to the technical field of electric-power equipment detection, and in particular, relates to a detection device of dissolved gases in transformer oil based on infrared spectrum absorption. The device includes a light source system unit, a sensing arrangement unit and a detection acquisition and analysis unit; the light source system unit is composed of a high-power supercontinuum broadband light source, a light source controller and a photoswitch and is used for realizing output multiplexing control of the light source; the sensing arrangement unit is formed by arranging one sensing path of fiber Bragg grating hydrogen sensor series-connection wavelength division multiplexing and the other one sensing path of hollow photonic crystal optical fiber internal spectrum absorption sensing in a cavity body of an oil-immersed power transformer; the detection acquisition and analysis unit is composed of a wavelength demodulation device, a light intensity detector and a data acquisition and analysis device, the wavelength offset and the spectral absorption intensity of fiber Bragg grating hydrogen sensors are detected, and the data acquisition and analysis device records data and types and contents of corresponding fault gases are obtained by calculation; and on the basis, insulation conditions of the transformer oil are evaluated, positioned, analyzed and forecasted.

The invention relates to a fiber bragg grating demodulating device and method based on chromatic dispersion Mach-Zehnder interferometry. The fiber bragg grating demodulating device comprises a broadband light source, a narrow-linewidth sweep frequency laser device, a first photoswitch, an optoisolator, a semiconductor optical amplifier, a pulse digital signal source, an optical circulator, a second photoswitch, a reference grating, a sensing grating array, a Faraday rotating mirror, a first optical coupler, dispersion compesation fiber, monomode optical fiber, a second optical coupler, a photoelectric detector set, a data collecting card and an upper computer. The optical fiber dispersion effect and the traditional Mach-Zehnder interferometry are combined to construct chromatic dispersion Mach-Zehnder interferometry, optical path difference caused by the chromatic dispersion effect is used for achieving phase sensibilization, interference information of all gratings in a quasi-distributed fiber bragg grating array is recorded through high-speed time-domain optical pulses, a multi-phase demodulating technology is used for processing time domain interference signals, high-sensitivity and high-speed demodulation of the fiber bragg grating array is achieved, and the demodulating device has the advantages of being high in interference resistance and capable of achieving distributed measurement.

The invention relates to a punching device based on capacitance detection and photoelectric induction positioning. The punching device based on capacitance detection and photoelectric induction positioning comprises a punching driving device, an upper die plate, a punching head and a clamping device located below the punching head, and a machined workpiece is mounted in the clamping device. The punching device comprises a mainframe, a controller, a hydraulic speed control loop, a capacitance thickness detector and a photoelectric switch. A color code for detecting the photoelectric switch is mounted on the clamping device, the output end of the mainframe is connected with the controller and the capacitance thickness detector, and a laser head is arranged in the punching head. According to the punching device, laser hole cutting and punching are combined, and machining efficiency is improved; the machined workpiece is accurately positioned through the photoelectric switch, and the punching device is accurate in positioning and convenient to operate. The thickness of the machined workpiece is detected, the punching speed and the laser energy are controlled through thickness, the defects of excessive deformation of plates due to the too high punching speed and burrs of the plates due to the too low punching speed are overcome, and machining quality is improved.

The invention discloses amphipathy photoswitch fluorescent polymer nano particles and a preparing method of the amphipathy photoswitch fluorescent polymer nano particles. Methyl methacrylate, polymerizable green fluorescence dye and a polymerizable photochromic compound are taken as monomers, hexadecane is taken as hydrophobe, a polyoxyethylene macromolecular chain transfer reagent is taken as a surface active agent, a one-step reversible addition-fragmentation chain transfer (RAFT) miniemulsion polymerization method is adopted for preparing the novel amphipathy photoswitch fluorescent polymer nano particles. The amphipathy photoswitch fluorescent polymer nano particles can emit intense macroscopic green or red fluorescence under irradiation of visible light and ultraviolet light, and have fast photoresponse capacity and good repeated fluorescence reversible switch performance. The amphipathy photoswitch fluorescent polymer nano particles have wide application prospects in the fields of cell imaging, bioanalysis, optical storage and the like.

The invention discloses a cross channel (CH) data link system of a fly-by-light flight control system, comprising a field programmable gate array (FPGA) module, a two-port random-access memory (RAM), an optical / electrical switching circuit, an electrical / optical switching circuit, a 2*2 photoswitch and a wavelength division multiplexer (WDM), wherein the FPGA module respectively communicates with the two-port RAM, the optical / electrical switching circuit, the electrical / optical switching circuit and the 2*2 photoswitch; and flight control computers 2 and 3 are respectively connected with the 2*2 photoswitch by the WDM. On the aspect of hardware of the CH data link system provided by the invention, the photoswitch and the WDM are adopted to realize fault inspection and multi-fault operation; meanwhile, a serial transmission protocol of universal serial buses (USB) is taken, thus ensuring the reliability of information transmission.

The invention provides a multi-spectrum bill image collecting device based on a CIS and a processing method. The multi-spectrum bill image collecting device at least comprises an infrared sensor, an optoelectronic switch sensor, an optical grating disc, a delivery mechanism, the multi-light-source CIS, an FPGA control circuit, a light source control circuit, a sensor circuit, an A / D converting circuit and a direct current motor. According to the device and the method, under the multi-spectrum condition, the visible light, ultraviolet light, infrared light or combined light initiative light sources are used for illuminating bills to complete image shooting, a computer series port is adopted to select light source schemes, and high-speed, real-time and high-quality image collection, display and storage are achieved. When the multi-spectrum bill image collecting device based on the CIS and the processing method are used, high-quality bill image data under the multi-spectrum condition can be rapidly obtained. The multi-spectrum bill image collecting device based on the CIS and the processing method can be used for true-or-false analysis of the bills, therefore, the high-speed and accurate recognition on the true and false bills can be achieved, and the accuracy, the stability and the real-time performance of a bill recognition system are improved.

The invention discloses a 4*4 nonblocking optical switching network based on five microring resonators. The 4*4 nonblocking optical switching network based on the five microring resonators comprises four crossing waveguide microring 1*2 photoswitches and one parallel waveguide microring 2*2 photoswitch, wherein the four crossing waveguide microring 1*2 photoswitches are respectively and directly connected with input and output ends; a first end input port 1 and a fourth end output port 4' are coupled by the microring resonator 1; not only the first end input port 1 and a third end output port 3', but also a fourth end input port 4 and a second end output port 2' are coupled by the microring resonator 2; a third end input port 3 and the second end output port 2' are coupled by the microring resonator 4; not only the third end input port 3 and a first end output port 1', but also a second end input port 2 and the fourth end output port 4' are coupled by the microring resonator 3; and the microring resonator 5 is used for connecting optical channels from the fourth end input port 4 to the first end output port 1' and from the second end input port 2 to the third end output port 3'. According to the 4*4 nonblocking optical switching network based on the five microring resonators, the nonblocking routing and switching of four bidirectional ports is completed through the five microring resonators; the microring resonators are decreased to five; in other words, the microring resonators are decreased by 37.5%; therefore, the insertion loss, the power consumption and the area are reduced; and crosses are reduced to six, so that the insertion loss and the crosstalk of the switching network are decreased, and the expandability of an optical interconnection network is enhanced.

The invention discloses a multi-station top-suction type exhaust and dust processing device with a function of automatic station conversion, which comprises a rail arranged on a support of a workshop, and a traveling crane driven by a power mechanism to travel on the rail. A plurality of top-suction type dust hoods corresponding to pollution sources are arranged on the traveling crane, the upper end of each dust hood is communicated with a venting pipe and a controlling valve, the lower end of each dust hood is provided with an exhaust inlet hole, the venting pipe of each dust hood is parallelly connected onto a main air pipe, the main air pipe is communicated with a bag filter system arranged outside the workshop, a photoelectric switch is arranged on the edge of an opening at the lower end of each dust hood, a limit switch which determines the stopping position of the traveling crane is arranged on the rail, and the limit switch, the photoelectric switches, a power mechanism, the controlling valve and a bag filter are all connected with a PLC (programmable logic controller) via cables. The multi-station top-suction type exhaust and dust processing device with the function of automatic station conversion solves the problem that amorphous dust in the workshop with serious dust pollution is difficult to gather and the like, is capable of running stably over a long period of time with enhanced processing effect.

A device to repel and disperse waterfowl entering a proscribed area consists of a laser beam generator generating a laser beam, and a photoelectric switch is provided so that the inventive device is only activated from dusk to dawn. A motion sensor senses the presence of waterfowl and activates the light beam source that is aimed into the area. In the preferred embodiment, a timer is provided that may be set for a desired duration. When the desired duration has elapsed, the controller deactivates the light beam source. The light beam source may consist of a single laser beam or a multiplicity of laser beams shining into the protected area. In one preferred embodiment of the present invention, a single laser beam is split into a plurality or multiplicity of beams using a suitable beam splitter. The inventive device may be equipped with a system that enables one or more laser beams to sweep and oscillate through the protected area so that not only is full coverage of the area assured, but the elevation of the beams is at least, at some points in time, at the level of the eyes of the waterfowl so that the waterfowl can detect the presence of the laser beams and quickly flee the area.

The invention discloses a visual garbage classification system based on TensorFlow and a garbage classification method. The system comprises a conveying belt, a first photoelectric switch sensor, a garbage tray, a slide rail, a camera, a second photoelectric switch sensor, intelligent garbage cans, an NVIDIA machine learning platform and an STM32 controller. The system applies an AI technology togarbage recognition and applies a deep learning visual classification technology to garbage sorting, acquires garbage images by the camera and adopts a TensorFlow deep learning frame, and greatly improves the garbage recognition accuracy by migration training of a MobileNet SSD. An STM32 single-chip microcomputer processes recognition results, controls the conveying belt to separate garbage and controls the slide rail to accurately put garbage into corresponding intelligent garbage cans, carrying and placement of the garbage are realized, human participation is not needed, the working efficiency and accuracy are improved, and the labor cost is greatly reduced.

The invention discloses a device and method for measuring atmospheric transmissivity at high precision. The device mainly comprises a laser, an optical fiber switching unit, optical fibers, an optical fiber attenuator, an optical fiber collimator, a pulse generator, a detector unit, a lock-in amplifier and a signal processing unit system. The device is characterized in that all optical functional modules are efficiently coupled by an optical-fiber-based high-speed photoswitch modulation and phase-sensitive detection system through the optical fibers, real-time monitoring of luminous intensity of a light source and single-detector channel detection of a measuring light path and a reference light path are realized, the influence caused by the change of intensity of a light source is eliminated, measurement errors caused by inconsistency of different detectors and amplification circuits on two channels are eliminated, and the measurement precision of the system is greatly improved. The device mainly adopts an optical fiber connection structure and is convenient and simple to install and debug, so that the complex light path debugging is avoided, and the stability, the antijamming capability and the applicability of the system are improved; a weak light signal is extracted by a correlation-theory-based phase-sensitive detection technology, the signal to noise ratio is improved, and the accurate measurement of atmospheric transmissivity on a long-distance base line is realized.

The invention belongs to the technical field of optical communication, and particularly relates to a non-blocking expandable multistage photoswitch array and a working method thereof. The multistage photoswitch array is provided with kN input terminals and kN output terminals, and comprises a packet network with kN input terminals and kN output terminals and a switching network consisting of k N*N non-blocking switching units A. The kN output terminals of the packet network are divided into k output groups. Any one input terminal selected can be connected to the output terminal of any one group of output groups. The N output terminals on each output group are connected with the N input terminals on the switching unit A orderly. The invention has the advantages that a novel network topological structure is put forward, wherein the structure combines the characteristic that mono-stage switching network is simple to control and the advantages of multistage switching network which is low in cost and complexity of hardware. A syncretic topological structure is put forward. The N*N structure is selectively expanded to the kN*kN structure agilely according to the current network traffic. The non-blocking expandable multistage photoswitch array provided by the invention is simple in swapping control and has strict non-blocking characteristics.

The invention discloses a scanning type glass color difference measuring device and a measuring method thereof. A track (7) which is parallel to a driving roller (10) is arranged on the upper parts of brackets (11), a slide block (5) is arranged on the track (7), an optic probe (6) is arranged on the slide block (5), photoelectric switches (4) and (8) of a position sensor (12) are respectively arranged on the brackets (11), a light source beam of the optic probe (6) vertically irradiates the surface of a glass band (9), a receiving beam receives characteristic light reflected by the glass band (9), enters a color difference data collector (15) to realize data collection and pretreatment and enters an industrial personal computer (13) to realize data pretreatment, and a parameter relevant to color difference is calculated. Compared with the traditional fixed-point type measuring system, the scanning type glass color difference measuring device can completely reflect an integral color difference index of a glass plate, is more suitable for monitoring the glass color difference parameter on line and has quick and accurate measuring effect and stable measuring result; and the measuring method is simple and easy, low in cost and beneficial to increasing the enterprise production efficiency.

The invention relates to an optical fiber illumination system with an optical feedback return circuit, comprising a driving circuit, an optical fiber coupling module which is connected with the driving circuit, an illumination terminal (6), and an optical fiber cable (4) which is connected with the optical fiber coupling module and the illumination terminal (6) and is composed of a plurality of optical fibers (14), the optical fiber illumination system with the optical feedback return circuit also comprises a feedback circuit which is connected with the driving circuit, a collecting card which is connected with the feedback circuit and a photoelectricity detecting module of which one end is connected with the collecting card and the other end is connected with the input end of the optical fiber cable (4), and a photoswitch (5) is arranged between the output end of the optical fiber cable (4) and the illumination terminal (6). Feedback light is generated by the photoswitch and is converted into electric signals through the photoelectricity detecting module and then enters the feedback circuit after being collected by the collecting card, light source power is adjusted by the feedback circuit to realize the adjustment of the illumination terminal. The optical fiber lighting system in the invention has complete photoelectricity separating characteristic and can provide safe and reliable optical fiber illumination in the occasion with specific requirements.

A small, substantially spherical, free-flying utility platform for use in space can be docked, inspected and serviced in an apparatus including a container with a chamber therein mounted on the outside of a space vehicle or space station. A motorized closing mechanism drives a door to selectively open or close an opening of the container into the chamber, and another mechanism automatically latches and locks the door. The door operations can be automatically triggered as the platform breaks the beams of light beam devices arranged in the container. The proper positioning of the platform in the container can be detected by a photoelectric switch. Capture and docking of the platform is facilitated by sloping funnel-shaped interior walls of the container, and properly shaped cushions and / or a docking cradle. When docked, the platform has its batteries recharged, its fuel tank refueled, and its electronics evaluated and diagnosed.

A circuit substrate is divided into a light emitting circuit substrate 60 and a light receiving circuit substrate 70, and they are disposed in a first casing 21 in a two-tier fashion, and the light emitting circuit substrate 60, which is disposed on an upper side, is overlapped with at least a part of an optical system 40. By this means, it is possible to obtain a wider range mounting surface in a small space, and therefore, it is possible to miniaturize a switch main body. In addition, it is possible to miniaturize the switch main body without miniaturizing the optical system 40 more than necessity, simply by changing a disposal configuration of components other than components of the optical system 40 in the switch main body, and therefore, it is possible to prevent lowering of detection accuracy which goes with miniaturization of the optical system 40, and it is possible to detect an object with high accuracy.

The invention relates to a polymer waveguide photoswitch array based on array waveguide grating structure, relating to a single-wavelength polymer waveguide photoswitch array device, where in the waveguide photoswitch array: input end of input plate waveguide is connected with output end of input waveguide, output end of the input plate waveguide is connected with input end of array waveguide grating composed of bending waveguides; the top of the array waveguide grating is equipped with current controlled electrode group, the two ends of the electrode group are connected with current input and output leads to compose temperature controller, input end of output plate waveguide is connected with output end of the array waveguide grating, output end of the output plate waveguide is connected with input end of the output waveguide, and on the condition that signals of the same wavelength are inputted, the device implements function of photoswitch array in the control of different currents. And the device will reduce the size of the routine photoswitch array of cascaded structure and simplify device driver.

The invention discloses an online visual inspection device and an online visual inspection method for cracks on the surface of poultry eggs, relating to the technical field of the poultry egg processing and grading. The online visual inspection device is characterized in that an opaque chamber (2) is arranged above a conveyer belt (1), and an industrial camera (3) is arranged at the center of the top part of the opaque chamber (2); a light source (6) is arranged under the conveyer belt (1) and is transmitted to be positioned on the poultry egg (8) on the conveyer belt (1) through a gap of the conveyer belt (1); a photoelectric switch (7) is arranged at the inner side of the opaque chamber (2), the photoelectric switch (7) is connected with a single-chip microcomputer (5) by a data line, and the single-chip microcomputer (5) and the industrial camera (3) are connected with a computer 4 by data lines. According to the online visual inspection device and the online visual inspection method, the cracks on the surface of the poultry egg can be inspected by machine vision, and the online visual inspection device has good adaptability to the application environment; the single industrial camera is used for shooting the poultry egg in a multi-overturning-angle manner, the detection range is wide, the equipment cost is low, and high-efficiency and high-intelligence nondestructive examination can be achieved; and the online visual inspection device and the online visual inspection method have good application and promotion prospect.