221 results about "Electro-optical sensor" patented technology

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.

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 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 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 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 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.

The invention relates to a ceramic bottle crack detection method based on machine learning open set recognition, which comprises the following steps: detecting the passing of a ceramic bottle on a conveyor belt through a photoelectric sensor, and when the passing is detected, controlling a knocking hammer to knock the bottle and collecting a sound signal through a microphone; intercepting, filtering and preprocessing the sound signal, and extracting a plurality of features; performing crack open set identification in two steps, adopting an improved MFCC to train a dichotomous support vector machine to detect whether a bottle has a crack or not, respectively training five single-class support vector machines by using all features to serve as a basic model of a first layer of a stacking model, and adopting a local outlier factor as a meta-model of a second layer of the stacking model to identify the crack open set of the bottle; the stacking model is used for detecting whether abnormal noise exists or not; and 4, according to an open set identification result, if abnormal noise exists during detection, re-detection is carried out, and otherwise, the ceramic bottles with cracks are removed according to a binary classification result. The open set recognition method is adopted to remove the influence of abnormal noise on the detection result, and the detection precision is high.

The application relates to the field of 3D printing, aims to solve the problems of low efficiency or high labor cost of known 3D printing equipment calibration schemes, and provides a 3D printing equipment galvanometer point calibration device and method. The 3D printing equipment galvanometer point calibration device comprises a calibration plate and a photoelectric sensor; the calibration plate has opposite first and second surfaces; the calibration plate is provided with a plurality of calibration holes distributed on the surface; the aperture of the calibration hole is greater than the laser spot diameter and less than 1.5 times the laser spot diameter; the calibration hole corresponds to the photoelectric sensor; the hole surface of the calibration hole is a reflecting surface, which is used for conducting the laser reflected once or more times to the photoelectric sensor after the laser is emitted by the galvanometer control and incident from the calibration hole; the photoelectric sensor can detect the light intensity incident thereon, the light intensity is used for judging the amount of laser entering the calibration hole, and then judging the positional relationship between the laser spot irradiated on the calibration plate and the corresponding calibration hole. The application has the beneficial effects of high efficiency and low labor cost.

The invention discloses a photoelectric sensor system conversion efficiency calibration system and method based on a reverberation chamber, and belongs to the technical field of photoelectric sensor conversion efficiency calibration, the system comprises an electric wave reverberation chamber, a transmitting antenna, a reference antenna and a photoelectric field sensor system; the photoelectric field sensor system is composed of a photoelectric sensor, a laser source, a photoelectric detector, a polarization maintaining optical fiber and a single-mode optical fiber. In the calibration process, the reference antenna and the photoelectric sensor system are used as receiving ends respectively, receiving power at different stirring positions in the reverberation chamber is sampled to obtain two groups of transfer functions, and the total efficiency of the photoelectric sensor system is determined by comparing the two groups of transfer functions under the condition that the radiation efficiency of the reference antenna is known. The conversion efficiency of the photoelectric sensor system is obtained by combining the relation among the power, the field intensity and the total efficiency in the free space; and the effective averaging of the incident direction and the polarization state is realized by using the uniform and isotropic electromagnetic field characteristics of the reverberation chamber.

The invention belongs to the technical field of couplers, and discloses a high-voltage photoelectric coupler for deep sea detection and a manufacturing method thereof, and the high-voltage photoelectric coupler comprises a photoelectric sensor, a high-voltage packaging housing, an optical fiber, a gain control circuit, and a transition joint. The photoelectric sensor is used for receiving an optical signal in a deep sea environment and converting the optical signal into an electric signal; the high-pressure packaging shell protects the photoelectric sensor from being influenced by deep sea high pressure; the optical fiber is used for transmitting an optical signal to the photoelectric sensor from the deep sea and transmitting an electric signal out; the gain control circuit is used for amplifying the electric signal output by the photoelectric sensor; and the transition joint is used for connecting the high-voltage packaging shell and a medium of external equipment. The optimized and stable high-voltage packaging technology ensures the reliability of the coupler in a deep-sea high-voltage environment, so that the coupler can stably work under extreme conditions, and the packaging problem of a traditional coupler is solved.

The invention relates to an optical system and a control method. An optical system of the present disclosure includes a laser configured to emit a laser beam, an optical gain cavity including a plurality of reflectors and configured to receive the laser beam and amplify a power of the laser beam, an adjustable light intensity attenuator, a photosensor, and a feedback controller, the adjustable light intensity attenuator is configured to adjust the intensity of a reflected light beam reflected by the optical gain cavity to be within a preset intensity range, and the photoelectric sensor is configured to receive the reflected light beam adjusted by the adjustable light intensity attenuator and generate an electric signal. The feedback controller is configured to adjust a frequency of the laser beam emitted by the laser based on the electrical signal. According to the optical system disclosed by the invention, the saturation phenomenon of the photoelectric sensor can be avoided through the adjustable light intensity attenuator, so that the photoelectric sensor obtains an accurate electric signal.

The invention relates to a three-mirror anastigmat telescope, comprising at least a primary mirror (1), a secondary mirror (2) positioned in front of the primary mirror (1) such that the primary and secondary mirrors have optical surfaces (1.1, 2.1) opposite one another, a tertiary mirror (3) having an optical surface (3.1) opposite the optical surface (2.1) of the secondary mirror (2), and a first optronic sensor (10) positioned opposite the tertiary mirror (3). The telescope comprises a second optronic sensor (20) positioned behind the secondary mirror (2) and the optical surface of the secondary mirror (2.1) has a dichroic treatment (2') intended to separate an incident luminous flux reflected by the primary mirror (1) into a first luminous flux reflected towards the first optronic sensor (10) via the tertiary mirror (3) and a second luminous flux transmitted to the second optronic sensor (20), the first luminous flux and the second luminous flux being in different spectral bands and the secondary mirror (2) being transparent to the spectral band of the second luminous flux.

The invention belongs to the technical field of industrial automation and intelligent manufacturing, and particularly relates to a furniture plate quality detecting and sorting system based on machine vision, which comprises a plate conveying mechanism provided with a feeding channel and three discharging channels; the scanning mechanism integrates an encoder and a photoelectric sensor, and synchronously triggers double cameras to collect double-sided images of the plate; the visual identification module adopts an optimized YOLOv8 model, a C2f module is replaced by a DCN-C2f module, bounding box regression loss adopts WIoUv3, and accurate classification of qualified plates, processing defect plates and self-defect plates is realized; the sorting mechanism automatically sorts the plates to corresponding channels according to recognition results through three linkage conveying belt units in combination with synchronous control of servo motor driving and air cylinder lifting. According to the invention, the problems of low detection precision and disjunction of identification and sorting actions are solved, and millimeter-level defect positioning and high-speed sorting are realized.

The present invention relates to a vertically-charge-transferring pixel sensor (VPS) and methods of manufacture and operation thereof. In the VPS, deep trench isolation (DTI) structures and shallow trench isolation (STI) structures in a substrate contain deep trench electrodes and shallow trench electrodes, respectively. In a light sensing operation, a positive bias voltage can be applied between the substrate and the deep and shallow trench electrodes to raise a potential barrier at boundaries of the DTI and STI structures and the substrate. This reduces the likelihood of photoelectrons being captured at the boundaries, thus reducing loss of photoelectrons and contributing to enhanced quantum efficiency. In addition, in the STI structures, the shallow trench electrodes may be offset toward light sensing regions beside the STI structures. In this way, a voltage applied to the shallow trench electrodes has a greater impact on potentials in the light sensing regions than on potentials in charge readout regions, thus additionally reducing loss of photoelectrons and minimizing the influence on MOS transistors in the charge readout regions.

This detection device comprises: a light source capable of emitting light toward a detection target; a first optical sensor provided adjacent to a first side surface side of the light source; and a light-transmissive resin portion covering the light source and the first optical sensor. The resin portion has a first groove portion formed between the light source and the first optical sensor, the first groove portion blocking light traveling from the light source toward the first optical sensor.

An optical measurement system may include a light source and corresponding photosensor configured to emit and detect photons reflected from objects in a surrounding environment for optical measurements. An initial peak can be identified as resulting from reflections off a housing of the optical measurement system. This peak can be removed or used to calibrate measurement calculations of the system. Peaks resulting from reflections off surrounding objects can be processed using on-chip filters to identify potential peaks, and the unfiltered data can be passed to an off-chip processor for distance calculations and other measurements. A spatial filtering technique may be used to combine values from histograms for spatially adjacent pixels in a pixel array. This combination can be used to increase the confidence for distance measurements.

The invention discloses an ionic elastomer photoelectric sensor based on triplet-triplet annihilation up-conversion and a preparation method of the ionic elastomer photoelectric sensor, and belongs to the technical field of functional materials and photoelectric sensing. The photosensitizer and the luminescence agent form a triplet state-triplet state annihilation up-conversion system. The preparation method comprises the following steps: respectively forming the ionic conductive phase and the optical active phase, mixing the ionic conductive phase and the optical active phase to form a homogeneous system, and curing and molding through photo-initiation polymerization. Under the optical excitation condition of a specific wave band, the ion elastomer can generate measurable electric signal output, so that conversion from an optical signal to an electric signal is realized. The flexible photoelectric sensor can be prepared by curing the material on the surface of an electrode, can work under the condition of no external bias voltage or low bias voltage, has the characteristics of good wavelength selectivity, excellent flexibility and stretchability and the like, and has an application prospect in the fields of wearable sensing and flexible electronics.

This utility model relates to a cross-axis palletizing device, including a feeding hopper, a conveyor belt, a palletizer, and a controller. The feeding hopper is located above the feeding end of the conveyor belt, and a small item palletizing basket is arranged below the discharging end of the conveyor belt. A telescopic rod is provided on one side of the small item palletizing basket to push it into the palletizer. Push rods and large item palletizing baskets are respectively located on the left and right sides of the conveyor belt. The large item palletizing basket is connected to a three-axis drive assembly via a rotary drive component. A moving component for moving the large item palletizing basket is also provided on one side of the three-axis drive assembly. A first photoelectric sensor and a telescopic limit rod are arranged sequentially above the conveyor belt between the feeding hopper and the large item palletizing basket, along the conveying direction of the conveyor belt. The controller is communicatively connected to the first photoelectric sensor, the telescopic limit rod, the push rod, and the three-axis drive assembly. This utility model can replace the manual process of stacking cross-axis pallets into boxes, saving manpower.

The invention relates to an optoelectronic sensor, in particular a time-of-flight camera or a LiDAR sensor, for detecting at least one object in a monitoring area, wherein the optoelectronic sensor comprises a light transmitter, a light receiver, and an evaluation unit. The light transmitter is configured to emit transmitted light into the monitoring area. The light receiver is configured to receive received light reflected from the monitoring area. The evaluation unit is configured to obtain distance data about the monitoring area based on the received light, wherein the distance data comprises intensity values ​​and associated distance values. For all those data components in the distance data that do not originate from the object, and in particular for all those data components whose intensity value is less than a first intensity threshold, the distance to the object is calculated based on the distance data.in particular to determine the distance of the data component to the object, and, based on the determined distance of the data component in question to the object, a model for the scattered light behavior of the optoelectronic sensor, and the intensity value of the data component in question, to determine a probability value that the data component in question represents a disturbance, and to identify all those data components as disturbances whose determined probability value is equal to or greater than a probability threshold.

An optoelectronic sensor, in particular a laser scanner, for detecting objects in a monitored zone is provided, wherein the sensor has a light transmitter for transmitting transmitted light; a drive having a stator and a rotor; a scanning unit movable with the aid of the rotor for the periodic scanning of the monitored zone by the transmitted light; a light receiver for generating a received signal from light remitted by objects in the monitored zone; a control and evaluation unit for detecting information on objects in the monitored zone with reference to the received signal; and a base housing having a hood. The base housing and the hood have at least one interface for a mechanical connection to one another and the hood comprises at least one first bearing for mounting the scanning unit, with the scanning unit being rotatably supported with the rotor in the first bearing.

The utility model relates to the technical field of electric appliance element cabinets, and particularly discloses a safety early warning device suitable for a new energy station box transformer substation, which comprises a temporary protective cover, and the new energy station box transformer substation is arranged at the central position in the temporary protective cover, and is characterized in that intrusion detection mechanisms are arranged on the periphery of the bottom end in the temporary protective cover; the intrusion detection mechanism comprises a cross beam seat, and a correlation photoelectric sensor A and a correlation photoelectric sensor B which are distributed at two ends of the cross beam seat. According to the technical scheme of the utility model, the high and low groups of correlation photoelectric sensors are arranged at the periphery of the interior of the temporary protective cover, so that intrusion early warning and monitoring can be carried out on the periphery of the box transformer substation of the new energy station; and the camera performs snapshot and sends a snapshot picture to equipment of a new energy station supervision room through the 5G network module, so that an anti-intrusion safety early warning effect is achieved.

To commonalize ICs for a large variety of types of photoelectronic sensors.SOLUTION: An IC for a photoelectronic sensor includes: a first light reception element and a second light reception element; a subtraction circuit; a switch circuit; and a control unit. The subtraction circuit outputs a differential signal as the difference between a first light reception signal which changes according to the amount of light reception of the first light reception element and a second light reception signal which changes according to the amount of light reception of the second light reception element. The switch circuit is a circuit which has a first input terminal in which at least one of the first light reception signal and the second light reception signal is input, a second input terminal in which the differential signal is input, and an output terminal and can switch between a setting of outputting a signal input to the first input terminal from the output terminal and a setting of outputting a signal input to the second input terminal from the output terminal according to the manner of usage of the IC for the photoelectronic sensor. The control unit switches the setting of the switch circuit according to a switch signal input from the outside to switch the manner of usage of the IC for the photoelectronic sensor.SELECTED DRAWING: Figure 2