855 results about "Light sensing" patented technology

The invention relates to the technical field of display, and particularly discloses a dynamic ambient light adaptive OLED display optimization method and system, and the method comprises the steps: obtaining an ambient light time sequence data set of an environment where an OLED display screen is located, and synchronously obtaining real-time display parameters and historical brightness adjustment data of the display screen; acquiring ambient light sensing features according to the ambient light time sequence data set; obtaining photo-thermal structure coverage area data of the OLED display screen according to the real-time display parameters; and acquiring preliminary optimization parameters according to the ambient light sensing characteristics and the photo-thermal structure coverage area data. According to the invention, illumination intensity, spectrum drift and contrast change are captured in real time in combination with ambient light perception characteristics, the one-sidedness of adjustment only according to brightness traditionally is solved, reflection can be reduced through photothermal structure deformation under strong light, brightness can be improved to offset interference, and human visual characteristics can be matched under weak light. And the display definition and the visual comfort in different environments are effectively improved.

The invention relates to the technical field of large-scale structure measurement, and discloses a robot laser vision three-dimensional scanning measurement system for a large-scale structural member. The system comprises a robot motion platform, a laser vision sensing module, an ambient light sensing module, a point cloud processing module and a motion control module, wherein the laser vision sensing module is arranged at the tail end of the robot motion platform. The ambient light sensing module collects ambient light intensity distribution data in real time, and the motion control module combines the data with three-dimensional model data of the large-scale structural member to be measured to generate a multi-view dynamic scanning path instruction. The robot motion platform executes an instruction to drive the laser vision sensing module to move, the module projects laser stripes to the surface of a to-be-measured structural member and synchronously collects an image, the point cloud processing module performs adaptive filtering processing on the image and then generates three-dimensional point cloud data, and the requirement for efficient and accurate measurement of a large structural member in a complex industrial environment can be met.

The invention discloses a liquid crystal display brightness adjusting system and method based on ambient light perception, and the system comprises a high-precision ambient light sensor which obtains the ambient light illuminance and color temperature data in real time; the analog-to-digital converter is used for converting the analog optical signal into a digital signal; an embedded microcontroller; the temperature sensor is tightly attached to the liquid crystal panel backlight unit; and the control input end of the liquid crystal driving chip is connected with the driving signal output end of the embedded microcontroller through a serial peripheral interface bus. The technical normal form of a liquid crystal display dimming system is fundamentally reconstructed: in a physical layer, photoelectric signals and human eye spectral response offset are corrected through a spectral separation mechanism, a carrier recombination effect is inhibited based on a thermodynamic equation, and the physical authenticity of brightness output is ensured; in a control layer, a motion state compensation model and a spatial topology perception algorithm are constructed, and brightness space-time consistency control in a dynamic scene is realized.

The invention relates to the technical field of LED display testing, in particular to an LED screen backlight module performance testing system which comprises the steps that a model identification code of a module to be tested is received, a corresponding standard optical parameter set is called, and initial driving current is applied. Actual optical signals driven by different currents are collected through a light sensing probe array and converted into a digital optical measurement value set containing brightness and color coordinate values of multiple sampling points. Comparing the brightness measurement value with a target brightness value point by point to generate a brightness consistency deviation matrix; and judging the color coordinate measurement value and the target range, and generating a color coordinate qualified identifier list. And calculating an actual brightness uniformity value according to the deviation matrix, and comparing the actual brightness uniformity value with a standard threshold value. And if the actual brightness uniformity value reaches the standard and the color coordinates of all the sampling points are qualified, generating a module qualification judgment instruction. According to the system, automatic and high-precision comprehensive evaluation of brightness space uniformity and chromaticity consistency of the backlight module is realized.

The invention relates to the technical field of image recognition, in particular to a horticultural product fungal disease image recognition system and method, and the system comprises an image collection module, an image segmentation module, an anomaly detection module, a feature extraction module, a disease recognition module and a decision output module. In the prior art, the intensity of a light supplementing lamp is manually adjusted, and instantly changing illumination conditions (such as cloud layer shielding and tree shadow shaking) are difficult to deal with in an open-air plantation, so that leaf scab details are often submerged by strong light or dim light is blurred; according to the scheme, a closed-loop linkage system of ambient light perception and an annular LED is innovatively deployed, and the light supplementing intensity is reversely adjusted in a millisecond level by tracking ambient brightness in real time, so that purple gray hyphae of downy mildew in mist in the morning and anthracnose black spots under the noon burning sun present completely consistent color saturation and texture definition in imaging; and the problem of misdiagnosis caused by illumination fluctuation in the traditional method is thoroughly solved.

An image sensor structure including a substrate, a pixel structure, and a deep trench isolation (DTI) structure is provided. The substrate includes a first side and a second side opposite to each other. The pixel structure includes a transfer transistor, a light sensing device, and a floating diffusion region. The transfer transistor includes a first gate. The first gate is disposed on the first side of the substrate. The light sensing device is disposed in the substrate and is located on one side of the first gate. The floating diffusion region is disposed in the substrate and is located on another side of the first gate. The DTI structure extends into the substrate from the second side of the substrate. The top-view pattern of the floating diffusion region does not overlap the top-view pattern of the DTI structure.

The invention discloses an intelligent tea mat tasting system based on multispectrum and deep learning, and belongs to the technical field of artificial intelligence, the system comprises a tea mat body, a multispectral sensor, a PLC and a terminal device, the multispectral sensor is arranged at the bottom of the tea mat body and comprises two light sources and two light sensing elements, and the PLC is connected with the terminal device; the PLC receives light signals, converts the light signals into electric signals and transmits the electric signals to the terminal device, and the terminal device comprises a multi-channel signal processing module, a peak value feature extraction module, a chaotic dynamics analysis module, a quality mapping module, a multi-standard comparison module, a probabilistic reasoning module, a recommendation generation module and a display module. A tea soup quality model is established through nonlinear feature extraction of multi-channel spectral signals in combination with chaos dynamics analysis, and tea quality evaluation is realized by utilizing three-dimensional flavor topological mapping and multi-standard library comparison, so that objective quantitative evaluation of tea quality is realized.

The invention relates to the technical field of solar energy, in particular to a solar street lamp light sensation tracking method and system. The method comprises the following steps: acquiring light intensity information of all groups acquired by a light sensing system for sensing a light source on the solar street lamp; based on the light intensity information of all the groups, determining the proportion value of the light intensity information of each group; comparing the proportion value of each group of light intensity information with a preset proportion value to obtain azimuth information of sunlight; and obtaining a tracking result for driving the solar panel to face the sun based on the azimuth information of the sunlight. The objective of the invention is to solve the problem that in the prior art, real direct sunlight and interference light are difficult to accurately distinguish, misjudgment is easy to generate, and a solar panel cannot accurately and effectively receive the direct sunlight.

The invention discloses a near-infrared light controllable irradiator for astroganglion stimulation, which comprises a physiological signal acquisition module used for acquiring a near-infrared light sensing signal of a carotid artery area in real time; the signal processing module is used for performing variational mode decomposition on the near-infrared sensing signal and extracting a heart rate component; the autonomic nerve analysis module is used for receiving the heart rate component and calculating the excitement ratio of sympathetic nerves to parasympathetic nerves; a deep learning model is arranged in the control signal generation module, and an optical parameter control signal is generated according to the heart rate cycle characteristics and the excitement ratio; and the light adjusting module is used for receiving the light parameter control signal so as to control the emission of near-infrared light. According to the invention, the output of the infrared light can be adjusted according to the physiological signal of the human body, intelligent adjustment is realized, the near-infrared light stimulation better fits the individual condition, and the pertinence and effectiveness of the stimulation are effectively improved.

A novel display device is provided. The display device includes a plurality of pixels each including a light-emitting device, a sensor device, a first circuit device, and a second circuit device. The light-emitting device and the sensor device are provided in a first layer. The first circuit device is provided in a second layer. The second circuit device is provided in a third layer. The light-emitting device includes a lower electrode, an upper electrode, and a light-emitting layer provided between the lower electrode and the upper electrode. The sensor device has a function of detecting light emitted from the light-emitting device. The first circuit device has a function of driving the light-emitting device or the sensor device. The second circuit device has a function of performing an arithmetic operation based on information output from the first circuit device. The first layer is provided over the second layer. The second layer is provided over the third layer.

The invention discloses an electronic brake system of a fishing reel, and belongs to the technical field of fishing gears. The system comprises a side cover, an adjusting drive plate, a brake adjusting execution assembly, a supporting cover plate, a coil base, an electric control board and a wire cup assembly, wherein the electric control board integrates an optical detection module, a conductive detection module and a control unit; a stop block of the brake adjusting execution assembly and an adjusting drive plate move synchronously, a conducting circuit and a conducting contact can be selectively conducted through a conducting layer on the bottom face of the brake adjusting execution assembly, discrete electric signals identifying gears are output, meanwhile, the shielding degree of the stop block on an optical path of the optical detection module changes continuously, and continuous light sensation analog signals are formed. And the control unit locks the gear according to the discrete electric signal, and responds to the light sensation analog signal to realize stepless regulation of the braking force in the same gear. The device adopts dual-mode cooperative detection, has the characteristics of no mechanical wear, high precision and strong interference resistance, is compact in structure and controllable in cost, effectively improves the casting stability of the fishing reel and the user experience, and is suitable for various fishing reels with precise brake requirements.

The invention discloses a pupil adaptive red light regulation and control method and system based on EC film and light source collaboration, and the method comprises the steps: obtaining a visible light image of the eyes of a user through an image collection module, and extracting a real-time pupil state parameter through an image processing module; meanwhile, the ambient light sensing module obtains ambient light intensity data. The cooperative control unit receives the parameters and generates a luminous flux control instruction set containing a first control instruction and a second control instruction based on a safety evaluation model. The first control instruction drives the electrochromic film assembly to change the light transmittance of the red light, and the second control instruction adjusts the luminous intensity of the red light source. Through cooperative control of optical attenuation of the electrochromic film and luminous intensity of the light source, the luminous flux entering the retina can be accurately regulated and controlled in real time according to dynamic changes of pupils, the problem of potential retina light damage risk caused by using a light source with fixed intensity is effectively solved, and the safety of red light irradiation application is remarkably improved.

There is disclosed a vital sign measuring device and method for obtaining an indication of a person's blood pressure via the person's finger by means of an inflatable measurement bladder adapted to contact only a portion of an underside of a finger defining a finger pad. A structure or other implement applies a downward force on a top portion of the finger opposite the finger pad. Blood pressure may be determined without the use of any electromagnetic radiation, such as miniature dynamic light sensing (mDLS). Apparatuses and methods for obtaining an indication of other vital signs, including hematocrit and total protein, are also disclosed.

The invention provides a digital photo frame energy-saving display method and system based on ambient light perception, and is applied to the technical field of digital photo frames. Detecting whether human body activities exist in the current environment or not; determining whether a preset energy-saving display condition is met at present according to the light intensity information and the human body activity detection result; if the energy-saving display condition is met, adjusting the display state of the digital photo frame to reduce power consumption; on the premise that acceptable watching experience is maintained, display is dynamically adjusted according to the environment light intensity and the human body existence state, and invalid power consumption of a display module and a master controller is reduced; ambient light perception and human body activity detection are comprehensively adopted, misjudgment caused by only depending on single light or passive infrared rays is avoided, the screen is turned on or turned off in time under the condition of no person or non-effective watching, and the invalid turn-on duration and energy consumption fluctuation are reduced.

A wearable display device includes: a housing formed in a ring shape or a cylindrical shape, a display panel disposed in a ring shape or a cylindrical shape inside the housing, and for emitting light in a first direction from an inner side of the display panel and receiving light incident to the inner side to detect a first light-sensing signal and for emitting light in a second direction from an outer side of the display panel and receiving light incident to the outer side to detect a second light-sensing signal, a main driver circuit for detecting a pulse wave signal of a user and measuring biometric information of the user by using the first light-sensing signal, and sensing the movement of a touch by a part of the user's body by using the second light-sensing signal, and a wireless communication module for transmitting the biometric information of the user.

A touch sensor panel can include a plurality of touch electrodes, one or more light detectors, a plurality of chiplets configurable for light sensing operation using the one or more light detectors or touch sensing operation using the plurality of touch electrodes, and processing circuitry coupled to the plurality of chiplets. The processing circuitry can be programmed to, in a first mode of touch sensing operation, in accordance with a determination that light detected by the one or more light detectors coupled to one or more first chiplets of the plurality of chiplets configured for the light sensing operation meets one or more first criteria, discard (or compensate) touch sensing results detected at the plurality of touch electrodes coupled to one or more second chiplets of the plurality of chiplets configured for the touch sensing operation.

A photo-sensing device includes a substrate and a trench isolation. The substrate has a pixel region. The trench isolation is disposed within the substrate, defines the pixel region and incudes an etching stop layer and an isolation structure. The isolation layer is connected with the etching stop layer. The etching stop layer has a minimum width in a direction, the isolation portion has a maximum width in the direction, and the minimum width and the maximum width are different.

The invention belongs to the technical field of transportation equipment, and particularly relates to a deviation rectifying system and method for a belt conveyor, and the deviation rectifying system comprises a light emitting device which is used for emitting light to cover and irradiate an upper belt; the light sensing device is used for receiving a light signal of the light emitting device and sending the received light signal to the main control chip; the laser ranging device is mounted at a tail roller of the belt conveyor and used for detecting whether the roller deviates or not and sending a deviation result to the main control chip; the main control chip is used for generating a deviation correction instruction according to the received optical signal and the roller deviation result; and the deviation rectifying device is used for adjusting the position of the roller according to the received deviation rectifying instruction and / or adjusting the position of the belt according to the received deviation rectifying instruction so as to realize belt deviation rectifying. Adjustment of the position of the belt is considered, the position of the roller is monitored in real time through the laser distance measuring device, it is ensured that the roller can be adjusted in time when deviating, and the deviation rectifying effect is improved.

A display device includes: a pixel driving circuit configured to drive the light emitting elements of pixels; and sensors including a light sensing element and a sensor driving circuit connected with the light sensing element and configured to output a sensing signal corresponding to a light, the sensor driving circuit including: a reset transistor including a first electrode configured to receive a reset signal, a second electrode connected with a first sensing node, and a third electrode configured to receive a reset control signal; an amplification transistor including a first electrode configured to receive a sensing driving voltage, a second electrode connected with a second sensing node, and a third electrode connected with the first sensing node; and an output transistor including a first electrode connected with the second sensing node, a second electrode connected with a sensing line, and a third electrode configured to receive an output control signal.

The utility model relates to a vehicle sun visor which comprises a sun visor body and a light sensing structure, the sun visor body comprises a plurality of electric control dimming subareas capable of independently adjusting light transmittance, and the electric control dimming subareas are sequentially arranged in the width direction of the vehicle sun visor; the light sensing structure comprises a plurality of light sensing parts capable of detecting light intensity respectively, and the positions of the light sensing parts in the width direction of the vehicle sun shield correspond to the positions of the electric control dimming subareas in the width direction of the vehicle sun shield respectively. The utility model further provides a vehicle. According to the vehicle sun shield, light can be shielded in a partitioned mode, and the visual field range of a user can be better guaranteed while redundant light is shielded.

The invention discloses a field operation portable low-light puncture infusion guide system which comprises a multispectral imaging module used for collecting an image containing a plurality of spectral bands by utilizing the penetrating power and reflection characteristic difference of light rays with different wavelengths to human tissues; the near-infrared blood vessel sensor is used for acquiring the contour and the position of a blood vessel; the low-light sensor is used for converting the optical signal into an electric signal based on a photomultiplier or a CMOS (Complementary Metal Oxide Semiconductor) low-illumination imaging technology and generating a low-light image through amplification and noise reduction processing; the image fusion processor is used for carrying out image fusion on the blood vessel image and the low-light-level image based on a feature-level or pixel-level image fusion algorithm; the AR display module is used for superposing a virtual image which is generated by image fusion and contains the position and the direction of the blood vessel into a real scene; the method has the advantages that the multispectral imaging technology and the low-light sensing technology are combined, richer tissue information is obtained, the limitation of a single imaging mode in the low-light environment is solved, and the blood vessel visualization effect is improved.

The application relates to an adaptive control system for dynamic sensitivity adjustment of a photoelectric sensor, comprising: a photoelectric sensor, the sensitivity parameter of which can be adjusted online, used for collecting and outputting an image sequence; a target detection and feedback unit, used for carrying out target detection on the image sequence output by the photoelectric sensor, obtaining a boundary box of the target, a detection confidence and a local signal-to-noise ratio expectation value of the target area; an ambient light sensing unit, used for acquiring an ambient light intensity and generating a predicted ambient light intensity; a prediction model unit, used for predicting a scene displacement amplitude of a next frame based on a motion vector of a current image frame; and a parameter solving unit, which is internally provided with a sensor response model and a motion blur probability model, and is used for constructing a cost function with the sensitivity parameter as a variable; the application can realize better adaptive control.

The utility model discloses a cable reel cable allowance light sensation method detection device comprising a wrapping post, outer reels are fixed on two sides of the wrapping post, the outer reels are provided with outer protrusions and inner protrusions, the outer protrusions are arranged on the outer diameters of the outer reels, and the inner protrusions are arranged on the inner diameters of the outer reels; notches are formed in the outer protrusions and the inner protrusions, grooves are formed in the face, close to the wrapping post, of the outer disc, the grooves correspond to the notches, integrated induction plates are installed on the grooves, integrated signal boxes are installed on the notches, and the winding thickness of a cable gradually wound in the wrapping post can become higher and higher till the cable gradually shields each light emitter. The optical sensor closer to the wrapping post represents that the number of turns of the cable is less, otherwise, the number of turns of the cable is more, and the shielded optical sensor can feed back data to the integrated signal box; and the integrated signal box processes data and outputs the data to the cloud for remote monitoring, so that a cable reel company can be conveniently reminded to recycle the cable reel after the line is used up, and the monitoring function of the cable reel is greatly improved.

A kind of lead-free perovskite hemispherical photodetector, preparation method and its application in single-pixel lensless color imaging belong to the field of image processing technology.The detector is composed of chromium electrode layer, electron transport layer, perovskite layer, hole transport layer and metal electrode layer from inside to outside on the spherical surface of hemispherical transparent substrate.The perovskite obtained by the application has strong lead-free and excellent stability, outstanding charge carrier transport capacity, high collection efficiency and strong weak light sensing ability.The application uses perovskite for color imaging, directly converts optical signal into electrical signal, has high sensitivity, shows excellent performance with linear dynamic response range of 146dB, and has the advantages of uniform response capacity and uniform thickness.The halide perovskite used by the application has low cost, short preparation time, does not contain toxic element lead, improves the application range of perovskite detector, and reduces the manufacturing cost and time cost of perovskite detector.

The utility model provides a manual test bench X-axis correction device and light sensing chip test equipment, and relates to the semiconductor test equipment technology field, the manual test bench X-axis correction device comprises a lower loading bench, an upper loading bench, a bearing assembly and an elastic floating assembly; the bearing assembly is connected with the downloading table through the elastic floating assembly, the bearing assembly has floating allowance relative to the elastic floating assembly along the X axis, and the bearing assembly is provided with a chip mounting cavity and a first positioning hole; the upper carrying table and the lower carrying table are movably connected along the Z axis, the upper carrying table is provided with a probe arranged opposite to the chip mounting cavity along the Z axis, and the upper carrying table is provided with a first positioning piece used for being inserted into the first positioning hole. The X-axis correcting device for the manual test bench can reduce combined structure tolerance caused by separation of structural parts, is more flexible and controllable in adjustment, and can quickly correct when positioning in the X-axis direction is inaccurate.

The application discloses a photoacoustic spectrum signal detection system and a detection method. The system comprises a signal acquisition device and a detection signal processing terminal. The signal acquisition device comprises an ultraviolet pulse laser, a first plano-convex lens, a second plano-convex lens, a focusing objective lens, a refractive prism, a helium-neon laser, an electric displacement platform, a polarization modulation assembly, a light splitting assembly and a differential detector. The photoacoustic spectrum signal detection system uses the specific absorption of cell nuclei to ultraviolet light, obtains a differential detection signal through the differential detector and generates an analysis spectrum. The light sensing assembly collects a light sensing signal of the sample and generates a microscopic image. The detection system can realize photoacoustic spectrum analysis of a cell nucleus level micro-sized absorber, thereby obtaining a high-resolution analysis spectrum and a microscopic image reflecting the physical properties inside the cell nuclei. The label-free and non-staining photoacoustic spectrum signal detection does not need staining and can save detection time, and the accuracy of cell detection on biological samples is improved.

The invention provides a bionic visual array system based on a two-dimensional negative capacitance phototransistor, and relates to the technical field of photoelectric detection, and the bionic visual array system comprises a MoS2 negative capacitance phototransistor, a voltage conversion circuit, a differential amplification circuit, a sampling hold circuit, a switching circuit and a voltage regulation circuit. The MoS2 negative capacitance photoelectric transistor is used for sensing a light signal to generate a light sensing current signal, the light sensing current signal is processed by the voltage conversion circuit, the differential amplification circuit and the sampling hold circuit and then a sampling hold signal is output, and the switching circuit controls the output of the sampling hold signal; the voltage adjusting circuit is used for adjusting the gate voltage of the gate of the MoS2 negative capacitance photoelectric transistor; the conduction threshold voltage of the MoS2 negative capacitance phototransistor is inversely correlated with the illumination intensity, and when the gate voltage is smaller than the dark state current turn-on voltage, the illumination sensitivity is positively correlated with the gate voltage; and the photosensitive modules sequentially output corresponding sampling holding signals according to a preset sequence. The system can realize data redundancy processing.

The invention relates to the technical field of new building materials, in particular to a new building decoration material quality detection device which comprises a detection box and a cabinet door hinged to the opening end of the detection box, a supporting plate is installed at the inner bottom end of one side of the detection box, a round protruding block is fixedly connected to one side wall of the supporting plate, and an L-shaped supporting plate is fixedly connected to the other side wall of the supporting plate; a first air pump is installed at the upper end of the outer wall of the supporting plate, the output end of the air cylinder is fixedly connected with a spherical hinge base, the spherical hinge base is in spherical hinge connection with a universal ball, and a plurality of universal joints are arranged on one side of the universal ball. A fixed shaft is fixedly connected between every two adjacent universal joints, the outer wall of each fixed shaft is sleeved with a light source disc, and a light source lamp extending to the outer end is embedded in the outer wall of each light source disc. Through the detection logic of light transmission in the pipe and light sensing and color changing outside the pipe, the defects of pipeline microcracks, holes and the like in a bending area can be accurately recognized.

The invention provides a display device which comprises a display panel and a driving chip, the display panel comprises an array substrate, the array substrate comprises a semiconductor layer and a gate layer, a photosensitive diode is arranged in the array substrate and comprises a PN junction diode composed of the semiconductor layer and the gate layer, and a metal wire is electrically connected with the photosensitive diode. The driving chip is electrically connected with the metal wire, and the driving chip is used for sending a sampling signal to the photosensitive diode, receiving a sensing signal of the photosensitive diode, generating ambient light brightness information according to the sensing signal, and adjusting the brightness of the display panel according to the ambient light brightness information. According to the display panel, the photosensitive diodes are integrated into the array substrate of the display panel, independent light sensing sensors do not need to be arranged on the periphery of the front-facing camera, the peripheral space of the front-facing camera is released, a camera with a larger size can be arranged, meanwhile, the cost of photosensitive components is reduced, and the display efficiency is improved. And the sensitivity and the response speed of sensing the ambient light are improved.