370 results about "Electro-optical sensor" patented technology

The invention discloses a concept for improved position and orientation determination of a plurality of objects each marked with at least one optoelectronically detectable marker, in which holographic optical elements are introduced into two-dimensional flat markers, at which ambient light is reflected back with sufficiently high intensity even at high scattering angles relative to the surface normal of the two-dimensional flat markers.For this purpose, it is proposed to detect light reflected by holographic optical elements (HOE; 21, 22, 23) applied to the markers (20) in an optoelectronic sensor (32) and to generate a two-dimensional reflection image, and to detect, in an image processing device (34), on the basis of the spectrally resolved local intensity distribution of the two-dimensional reflection image detected by the optoelectronic sensor (32), differences between the reflection behavior of the optoelectronically detectable markers (20) of the current position and orientation of the plurality of objects (100; 200) and the reflection behavior of the optoelectronically detectable markers (20) in a reference configuration of the plurality of objects (100; 200), and to detect deviations in the overall configuration of the plurality of objects (100; 200) relative to the optoelectronic detection device (30) by evaluating the detected differences. determine.

The invention discloses an intelligent pet toilet in the technical field of pet supplies, and the intelligent pet toilet comprises a support which is provided with a bin body and a driving assembly used for driving the bin body to rotate on the support; a drain outlet is formed in the side wall of the bin body, and a discharge outlet is formed in the bottom of the support; a photoelectric sensor and a controller are arranged on the support, the photoelectric sensor comprises a transmitting end and a detecting end which are located on the two sides of the bin body respectively, and a plurality of open holes are formed in the side wall of the bin body; light beams emitted by the emitting end of the photoelectric sensor can irradiate the detection end through the multiple open holes formed in the upper portion of the side wall of the bin body, the controller can accurately judge the movement position of the bin body through the open holes formed in different positions, the control accuracy of the bin body is improved, the situation that the bin body offside or is not in place is avoided, and the working efficiency is improved. Normal discharge of excrement is ensured, and normal operation of the pet toilet is ensured.

The invention provides a distributed optical fiber sound wave sensing chip, system and method based on polarization state detection. The chip comprises an optical pulse source module, a first spot size converter, a second spot size converter and a high-speed polarization analysis module, the optical pulse source module generates pulse light and outputs the pulse light to the optical fiber circulator and the sensing optical fiber through the first spot size converter; the second spot size converter receives scattered light returned from the sensing optical fiber and the optical fiber circulator and inputs the scattered light into the high-speed polarization analysis module; the high-speed polarization analysis module comprises a polarization beam splitting rotator, four interference structures and six photoelectric sensors; the polarization beam splitting rotator divides the scattered light into a TE mode and a TM mode, rotates the TM mode to the corresponding TE mode and then outputs the scattered light through two output ports of the polarization beam splitting rotator; each output end of the polarization beam splitting rotator is connected to one photoelectric sensor and one input end of the four-way interference structure; the four-way interference structure is provided with four output ends which are respectively connected to the rest photoelectric sensors.

A method for non-contact safety at a cooperation area (48) of a machine (40) is specified, wherein an access area (44) for a worker (46) is arranged on a first side of the cooperation area (48) and a working area (42) of the machine (40) is arranged on a second side, wherein several protective fields (38) configured in the vicinity of the cooperation area (48) are monitored for protective field intrusions by at least one optoelectronic sensor (10) and at least two of the protective fields (38) are arranged in a first sequence from the first side, so that a worker (46) intrusions into these protective fields (38) successively when approaching the cooperation area (48), and wherein the protective field intrusions are evaluated in order to safeguard the machine (40) in the event of an impermissible combination of protective field intrusions.In this process, at least two of the protective fields (38) are arranged in a second sequence from the second side, so that the machine (40) intervenes in these protective fields (38) one after the other when approaching the cooperation area (48).

The technology disclosed in this patent document can be used to construct devices with opto-electronic circuitry for sensing and identification applications, to provide untethered devices for deployment in living objects and other applications, and to provide fabrication techniques for making such devices for commercial production. As illustrated by specific examples disclosed herein, the disclosed technology can be implemented to provide fabrication methods, substrates, and devices that enable wireless, inorganic cell-scaled sensor and identification systems that are optically-powered and optically-readout.

Pixels with multiple operating modes (and associated systems, devices, and methods) are disclosed herein. In one embodiment, a pixel arrangement includes a pixel including a first photosensor, a second photosensor, a floating diffusion, a first event vision sensor (EVS) connection coupling the pixel to first EVS readout circuitry and configured to receive first charge from the first photosensor, and a second EVS connection coupling the pixel to second EVS readout circuitry and configured to receive second charge from the second photosensor. The pixel further includes a first transfer transistor selectively coupling the first photosensor to the floating diffusion, a second transfer transistor selectively coupling the first photosensor to the first EVS connection, and a third transfer transistor selectively coupling the second photosensor to the floating diffusion. In some embodiments, the pixel further includes a fourth transfer transistor selectively coupling the second photosensor to the second EVS connection.

The invention discloses a pump lamp tube fault accurate diagnosis system based on multi-parameter data analysis, and relates to the technical field of industrial automation monitoring, and the system comprises a multi-parameter acquisition and unique fault judgment algorithm, a multi-parameter acquisition module is connected with a high-precision current transformer, an infrared temperature sensor, a miniature pressure sensor, a photoelectric sensor and the like, and the multi-parameter acquisition module is connected with the unique fault judgment algorithm; parameters such as current, voltage, lamp tube surface temperature, internal gas pressure and luminous intensity during operation of a pumping lamp tube are accurately acquired, denoising and filtering parameters and a normalization method based on lamp tube rated parameter values are set by the preprocessing unit, and a fault diagnosis model is constructed by the data analysis module by selecting multiple learning algorithms. The collected and preprocessed parameter vector is X, a weight vector W and a bias item b are obtained through model training, a comprehensive score S is calculated, a fault judgment threshold T is set through a large amount of sample data training, and if S is larger than or equal to T, it is judged that a lamp tube has a fault, and a fault type mark is output; if Slt; and T, judging normal operation of the lamp tube.

The invention discloses an azimuth gamma testing device and application, and belongs to the technical field of oil and gas logging equipment, the testing device comprises a PC, a rotating table, a rotating table motor, a motor driver, a rotating speed operator, a conductive slip ring and a stabilized voltage supply, the rotating table is sleeved with a rotating disc, and the rotating disc is fixedly connected with a laser; a dial is fixedly connected to the outer circumference of the rotating disc, one end of the rotating table is connected with the rotating table motor, the other end of the rotating table is connected with the conductive slip ring, the conductive slip ring is electrically connected with the azimuth gamma instrument to be measured, the azimuth gamma instrument to be measured is electrically connected with the stabilized voltage supply and the PC, and the rotating speed operator is electrically connected with the motor driver. The motor driver is connected with the rotary table motor, a photoelectric sensor is fixedly connected to the rotary table, and the photoelectric sensor is electrically connected with the azimuth gamma instrument to be detected. According to the invention, double evaluation of the azimuth measurement precision and the pulse counting time correctness of the azimuth gamma instrument can be accurately checked.

The utility model provides an automatic deviation rectifying knife edge belt, which belongs to the field of conveying belt equipment and comprises a conveying table, an open groove is arranged on the conveying table, a transmission shaft is rotatably arranged in the open groove, a rolling wheel which rolls transversely is rotatably arranged on the transmission shaft, a conveying belt is rotatably arranged on the rolling wheel, and a plurality of deviation rectifying assemblies used for rectifying deviation of the conveying belt are symmetrically arranged on the conveying table. During use, the photoelectric sensor and the two-way air cylinder are connected with the PLC control cabinet, then the transmission shaft is started, the transmission shaft is used for driving the conveying belt to rotate, the conveying belt is used for conveying, when the conveying belt deviates from the transmission shaft and deviates towards one side, the photoelectric sensor is interfered, signal feedback is conducted, and then the two-way air cylinder is started. The output end of the two-way air cylinder drives the limiting rod to move, the limiting rod drives the rolling shaft to be attached to the side edge of the conveying belt, and the conveying belt is adjusted in the middle.

A light emitting display device includes: a display panel including: a display area; and a first pixel and a second pixel at the display area; and an optical element on a rear surface of the second pixel. The second pixel includes: a photosensor area; and a shielding layer at the photosensor area, the shielding layer being transparent and conductive.

A light emitting display device includes: a display panel including: a display area; and a first pixel and a second pixel at the display area; and an optical element on a rear surface of the second pixel. The second pixel includes: a photosensor area; and a shielding layer at the photosensor area, the shielding layer being transparent and conductive.

The utility model relates to a product inspecting and removing device which comprises a horizontal conveying belt, and a pushing assembly and a backup plate are arranged on the same side of the conveying belt. The product checking and removing device further comprises a first photoelectric switch assembly, a second photoelectric switch assembly and a PLC module. The first photoelectric switch assembly comprises a first stand column, a cross beam and a first photoelectric sensor. The cross beam is vertically arranged above the conveying belt, can slide up and down along the stand columns and is selectively fixed on the stand columns; the first photoelectric sensor is movably arranged on the cross beam; the second photoelectric switch assembly comprises a second stand column, a second photoelectric sensor and a third photoelectric sensor, the PLC module is connected with the first photoelectric sensor, the second photoelectric sensor and the pushing assembly. The device has the advantages that the device is suitable for products with rectangular sections of different specifications and models, simple in structure and high in adaptability, and the rejection efficiency and the success rate of unqualified products on an assembly line can be guaranteed.

The invention relates to the technical field of space environment detection, in particular to a photoelectric sensor for space dust particle size detection, which comprises an optical signal collection assembly and an electric signal conversion and acquisition assembly, and is characterized in that the optical signal collection assembly comprises a support, a front pressing plate, an optical filter and a sensor; the electric signal conversion and acquisition assembly comprises a circuit box body, a photoelectric conversion detector, a signal processing circuit board, a signal wire passing sleeve and a circuit box cover. The support of the particle size sensor is used as a main structure, and other structures are subjected to split design and integrated precision assembly, so that the processing difficulty of a complex structure is reduced, the machining precision of a single structure is effectively improved, and the form and position processing error of each structural part is effectively controlled; the non-imaging compound paraboloid condensation sensor is independently designed and processed, so that the processing precision of a product is improved; and vibration reduction design is independently carried out on internal structural components, so that the mechanical impact resistance of weak parts is improved.

The utility model discloses a photoelectric sensor mounting rack, which relates to the technical field of photoelectric sensor mounting, and comprises a vertical rod, an L-shaped fixing plate and a photoelectric sensor, the vertical rod and the L-shaped fixing plate are vertically arranged, the lower part of the vertical rod is provided with a mounting bolt and a fixing nut, and the L-shaped fixing plate is fixedly connected with the photoelectric sensor under the limiting action of a brake block. The L-shaped fixing plate can move up and down along the vertical sliding groove in the vertical rod, the long edge of the L-shaped fixing plate moves left and right under the limiting effect that the transverse sliding groove is matched with the brake block, and after the L-shaped fixing plate reaches the set position, the brake block and the brake bolt are screwed. The photoelectric sensor on the short edge of the L-shaped fixing plate is adjusted, front-back movement is achieved under the limiting effect that the cylindrical screw is matched with the longitudinal sliding groove, and therefore adjustment in the X direction, the Y direction and the Z direction is achieved, adjustment of the position and the direction is achieved, and the installation and adjustment efficiency is high.

The invention discloses a reusable blood coagulation detection device based on a droplet microfluidic technology and a use method, and belongs to the technical field of droplet microfluidics, and the device comprises a microfluidic chip, an injection pump and an optical detection device. The micro-fluidic chip is used for generating and capturing blood droplets and comprises a PDMS layer, a three-dimensional electrode and a glass substrate, the PDMS layer and the glass substrate are bonded, and the three-dimensional electrode is poured in a second flow channel of the PDMS layer. The injection pump is used for controlling constant flow and is connected with an inlet of the PDMS layer. The optical detection device is used for detecting the blood coagulation process in the micro-fluidic chip and comprises a light source, a first lens, a second lens and a photoelectric sensor. The liquid drops in the micro-fluidic chip are controlled by applying an external electric field, the blood liquid drops are captured and released, the blood coagulation process is monitored by adopting an optical method, and a new thought is provided for blood coagulation function detection. The chip is prevented from being blocked when blood is coagulated mainly in a mode of wrapping the blood by an oil phase, and possibility is provided for flushing and reusing the chip.

The invention relates to a lighting device (41) for an optoelectronic sensor having at least one lighting path (45a, 45b), wherein the lighting path (45a, 45b) comprises at least one light-emitting unit (46a, 46b) for emitting transmitted light and a detector (50a, 50b) for detecting the transmitted light or a current driving the light-emitting unit, and wherein the lighting device (41) comprises at least one driver (49a, 49b) with a driver output, which is connected to the light-emitting unit (46a, 46b) for control by means of a current signal, and a modulator (55) connected to a driver input for modulating the current signal, and with a delay detection circuit (53) and at least one delay compensation circuit (47a, 47b), and wherein - The detector (50a, 50b) is connected to the delay detection circuit (53) for providing a detector signal, - The delay detection circuit (53) is designed and arranged to measure a time delay of the detector signal relative to the modulation signal (Mod), - The delay compensation circuit (47a, 47b) is designed and configured to adjust a signal propagation time of the modulation signal (Mod) as a function of the detected time delay. Furthermore, a method for operating a corresponding lighting device (41) is specified.

The utility model discloses a photoelectric frame for a photoelectric sensor, which comprises a mounting seat, a rotating column, a U-shaped block, a movable block and a photoelectric sensor body, wherein the rotating column, the U-shaped block and the movable block are sequentially arranged at the top of the mounting seat, and the photoelectric sensor body is arranged at the top of the movable block. An enclosure protection assembly is arranged at the top of the movable block; the photoelectric sensor body is arranged at the top of the movable block, under the cooperation of the semicircular shells, the hinge blocks and the connecting strips, the semicircular shells can be turned over to the top of the movable block with the hinge points on the connecting strips and the hinge blocks as the circle center, and the photoelectric sensor body is enclosed in the semicircular shells. The top of the photoelectric sensor body is exposed out of the tops of the semicircular shells, the semicircular shells are connected through cooperation of the connecting pieces, the comprehensive protection effect is achieved for the photoelectric sensor body, the photoelectric sensor body is prevented from being exposed in a working area or an external environment, and therefore when the photoelectric sensor body is collided and the like, the photoelectric sensor body cannot be damaged. And the condition that the photoelectric sensor body is damaged is further avoided.

The invention discloses a dynamic liquid level detection system and method based on a capacitance-photoelectric dual-mode sensor, and the system comprises a dual-mode sensor module which comprises a capacitance sensor used for measuring the capacitance value change caused by the liquid level change; the photoelectric sensor is used for measuring the light intensity change caused by the liquid level change; the signal processing module is used for processing original signals of the capacitive sensor and the photoelectric sensor; the dynamic calibration module comprises a temperature sensor and a microcontroller MCU, and the microcontroller MCU is configured to receive and process the signal from the signal processing module; dynamically adjusting the excitation frequency of the capacitive sensor according to the temperature value read by the temperature sensor and a preset sample viscosity type; based on a self-adaptive weighted fusion algorithm, fusing the processed capacitance signal and the photoelectric signal, and outputting final liquid level information; and when bubbles are detected, the control system is switched to a pure capacitance detection mode. According to the invention, high-precision liquid level detection can be realized.

The application discloses a kind of physical defect detection devices and methods of spectacle optical lens. Including collimating light source, two-dimensional light point scanning system, power compensation optical system and integrating sphere arranged in sequence on light path, photovoltaic sensor on the reflecting surface of integrating sphere, data processing board connected with photovoltaic sensor, overflow port for light beam passing is opened on integrating sphere.The application solves the comprehensive detection technical problem of detecting the defects such as bubble, scratch and pitting of the lens with optical power, and establishes the industry standard accordingly.The application is simple in structure, low in cost and high in sensitivity, and the 100% detection rate makes the operator only need to recheck the lenses that are misdetected as defects due to removable dirt on the surface.Usually, these lenses that need to be rechecked are about 3%.Thus, the application greatly reduces the intensity of workers and improves the efficiency, and also avoids unnecessary waste.

The utility model relates to the technical field of weighing and packaging machines, and discloses a weighing and packaging machine with a positioning structure, which comprises a base, a weighing device is mounted at the top of the base, a display screen is arranged on the outer wall of the weighing device, a placing table is mounted at the top of the display screen, the outer wall of the placing table is connected with a connector, and the connector is connected with the positioning structure. The weighing packaging machine comprises a containing table, a conveying table is placed on the top of the containing table, a rotating motor is installed on the outer wall of the containing table, a conveying belt is arranged on the inner wall of the conveying table, and large-package objects are placed on the outer wall of the conveying belt. Therefore, when a display screen on the device displays weighing information, transient time delay setting is carried out, then a rod lifting motor controls a handrail to carry out rotary lifting work, and a rotary motor recovers the transmission effect again to convey large-package articles rightwards and leave the large-package articles.

A positron emission tomography (PET) scanner includes multiple gamma radiation detector modules arranged to form a detector ring. Each detector module includes an array of elongated scintillation crystals. With respect to the detector ring, each elongated scintillation crystal includes a proximal end face, two axially-oriented side faces, two cross-axially-oriented side faces, and a distal end face oriented radially into the detector ring to receive gamma photons. An array of photosensors is disposed along a first of the axially-oriented side faces of each elongated scintillation crystal to detect scintillation photons. Reflective material is disposed on a second of the proximal end face, the distal end face, the cross-axially-oriented side face, and the axially-oriented side face of each elongated scintillation crystal to internally reflect scintillation photons. In various embodiments, a dual-channel processing circuit provides separate timing and energy signals from the photosensors.

The invention discloses an underwater heavy hydraulic robot optical fiber link construction method and system, and the method comprises the steps: building a plurality of optical communication nodes on an underwater optical fiber link, and carrying out the optical signal communication with a robot; time division multiplexing is carried out on the transmitted optical signals, the transmitted optical signals construct signal groups according to a synchronous clock, and the signal groups are divided into the same interaction signal group and different interaction signal groups according to the synchronous clock and a time slot; electromagnetically controlling the rotation direction and angle of a photoelectric sensor of the optical communication node and / or the underwater robot, and controlling the rotation direction and angle of the photoelectric sensor according to light intensity signal feedback received by the photoelectric sensor; receiving optical signals transmitted by the optical communication node and the underwater robot, decoding and converting the transmitted optical signals to obtain digital signals, and performing signal recombination of the same interaction signal group according to a time division multiplexing synchronous clock and transmitted light intensity to obtain recombined digital signals; and executing a corresponding interaction instruction according to the recombined digital signal.

The utility model discloses a carton sealing machine, which belongs to the technical field of carton sealing machines and comprises a worktable, square plates fixedly mounted on two sides of the upper end of the worktable, a carton sealing machine core mounted between the square plates, first conveying belts fixedly mounted on two sides of the lower end of the carton sealing machine core, a U-shaped frame fixedly mounted at one end of the carton sealing machine core, and second conveying belts symmetrically mounted at two ends of the U-shaped frame. A mounting plate is fixedly mounted on one side of the upper end of the workbench, a photoelectric sensor is mounted at one end of the mounting plate through a mounting assembly convenient to disassemble and replace, an integrated control panel is fixedly mounted at one end of the square plate, and the photoelectric sensor is electrically connected with the integrated control panel; the first conveying belt, the second conveying belt and the control end of the box sealing machine core are all electrically connected with the integrated control panel, whether a packaging box exists or not is sensed through the photoelectric sensor, the first conveying belt and the second conveying belt are automatically started when the packaging box arrives, the box sealing machine core is started for box sealing, and when no packaging box exists, the machine is automatically stopped for waiting; therefore, abrasion, faults and cost are reduced.

The utility model discloses a level meter for monitoring vertical displacement of a roadbed, and relates to the technical field of roadbed monitoring. The road monitoring system comprises a road subgrade and further comprises a monitoring assembly, the monitoring assembly comprises pile bodies linearly distributed on the slope surface of the road subgrade, photoelectric sensors are installed at the top ends of the pile bodies, and the multiple photoelectric sensors are linearly distributed along the axis of the pile bodies. A laser measuring instrument is replaced by the monitoring assembly, and compared with the prior art, the device has the advantages of being not prone to being affected by the external environment, high in vertical displacement detection accuracy and the like and has practicability.

A scintillation crystal can include a rare earth silicate, an activator, and a Group 2 co-dopant. In an embodiment, the Group 2 co-dopant concentration may not exceed 200 ppm atomic in the crystal or 0.25 at % in the melt before the crystal is formed. The ratio of the Group 2 concentration / activator atomic concentration can be in a range of 0.4 to 2.5. In another embodiment, the scintillation crystal may have a decay time no greater than 40 ns, and in another embodiment, have the same or higher light output than another crystal having the same composition except without the Group 2 co-dopant. In a further embodiment, a boule can be grown to a diameter of at least 75 mm and have no spiral or very low spiral and no cracks. The scintillation crystal can be used in a radiation detection apparatus and be coupled to a photosensor.

The invention provides a temperature self-adaptive frequency locking system and method applied to a CPT atomic clock, the system comprises a TEC heating sheet 1, a VCSEL laser 2, a temperature sensor 3, a gas chamber shell 4, a gas chamber 5 and the like, the VCSEL laser 2 is tightly attached to the surface of the TEC heating sheet 1, the temperature sensor 4 is arranged near the outer side of the gas chamber 5, the gas chamber 5 is wrapped by the gas chamber shell 4, and the TEC heating sheet 1 is arranged in the gas chamber shell 4. A heating resistor network 7 is arranged at the lower part of the air chamber 5; a laser beam emitted by the VCSEL laser 2 passes through the gas chamber 5 and then is received by the photoelectric sensor 6. The whole control is executed by a CPT atomic clock control system 9; and feedback signals of the temperature sensor 4 are respectively transmitted to the frequency drift algorithm processing module 10 and the control parameter adjustment algorithm processing module 11. Output signals of the two modules are transmitted to a CPT atomic clock control system 9; a feedback signal of the photoelectric sensor 6 is also transmitted to the CPT atomic clock control system 9; the VCO voltage-controlled crystal oscillator 8 is controlled by the CPT atomic clock control system 9 and outputs frequency to the outside.

The invention discloses a concept for improved time-resolved location and / or position determination of an object marked with several optoelectronically detectable markers, in which holographic optical elements are introduced into two-dimensionally planar markers, at which ambient light is reflected back with sufficiently high intensity even at high scattering angles relative to the surface normal of the two-dimensionally planar markers.For this purpose, it is proposed to detect light reflected by holographic optical elements (HOE; 21, 22, 23) applied to the marker (20) in an optoelectronic sensor (32) and to generate a temporal sequence of two-dimensional reflection images, and to determine in an image processing device (34) a time-resolved position and / or orientation of the object relative to the optoelectronic detection device (30) or the environment marked with detectable markers (20) by evaluating the spectral and local intensity distributions in the two-dimensional reflection images detected by the optoelectronic sensor (32).

The utility model relates to the technical field of photoelectric sensor production, and discloses a debugging platform for designing a photoelectric sensor, which comprises a detection platform provided with an emitting through hole and a receiving through hole, the emitting through hole is used for allowing light emitted by a light emitter to pass through, and a light receiver receives light signals through the receiving through hole; the transmitting end lens adjusting module comprises a first cylindrical part used for installing a transmitting end lens and a vertical adjusting assembly used for driving the first cylindrical part to move along the center line of the emitting through hole; the receiving end lens adjusting module comprises a second barrel-shaped part used for installing a receiving end lens and a transverse adjusting assembly used for driving the second barrel-shaped part to transversely move, and the moving direction of the second barrel-shaped part is perpendicular to the direction of the center line of the receiving through hole; and the detection circuit board is mounted on the detection table and is electrically connected with the light emitter and the light receiver respectively. The debugging platform for designing the photoelectric sensor is beneficial to designing the photoelectric sensor with a more reasonable structure.

The invention relates to perovskite quantum dot glass powder and a preparation method thereof, the chemical formula of the glass powder is CsPb (Ax B1-x) 3, A and B are one or more of Cl, Br or I, x is more than or equal to 0 and less than or equal to 1, and the total molar amount of the components is 100 mol%. According to the perovskite quantum dot glass powder, the fluorescence wavelength can be adjusted through component change, the preparation method is simple and low in toxicity, and the perovskite quantum dot glass powder has high stability and does not need an annealing process. The method can be widely applied to the fields of display devices, lighting equipment, photovoltaic devices, photoelectric sensors and the like.

The invention discloses a single-motor stack combining roller way machine and a stack combining method, and belongs to the technical field of logistics devices. The roller bed machine comprises a machine frame and a plurality of conveying rollers, the conveying rollers are all rotationally connected to the machine frame, the adjacent conveying rollers are in transmission connection, the machine frame is provided with a power assembly, an output shaft on the power assembly is in transmission connection with one of the conveying rollers, and the machine frame is provided with a plurality of photoelectric sensor assemblies. A plurality of photoelectric sensor assemblies are arranged at intervals, one of the photoelectric sensor assemblies is located at the tail end of the rack, an interval is also formed between the other end of the rack and the last photoelectric sensor assembly, and the lengths of all the intervals are equal. Therefore, materials can be continuously placed in front of the first photoelectric sensor assembly, the power assembly continuously drives all the materials to move forwards, stacking is completed, only one set of power assembly needs to be adjusted and maintained for the single-motor stacking roller way machine, operation is simple, and the requirement for conveying large-tonnage materials in the narrow space of an elevator is met.