19 results about "Visible light sensing" patented technology

The application provides a visible light target sensing method and device, applied to the technical field of industrial Internet of Things, determining the receiving signal strength of each receiving end, wherein the transmitted signal is visible light, realizing integrated sensing of the target through directional radiation and light intensity consistency of the visible light, realizing mutual assistance of the positioning result and the recognition result, converting the receiving signal strength into a pseudo-color image, each receiving signal strength corresponding to a pixel point in the pseudo-color image, determining an image with shadow information based on the pseudo-color image, the image with shadow information being caused by the appearance of the visible light target, performing feature extraction and feature recognition on the image with shadow information, determining the position of each visible light target and the category of each visible light target, using the shadow feature to represent the target, and improving the robustness and resistance of the visible light sensing technology.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

The invention provides a visible light-short wave infrared image sensor and a manufacturing method thereof. The method comprises the following steps: providing a wafer substrate comprising a first substrate and an absorption layer; and etching the absorption layer to obtain a groove, and forming a visible light sensing layer in the groove. And forming a first doping type layer and a second doping type layer, and forming a first metal layer and a second metal layer. The first doping type layer is adjacent to the visible light sensing layer, the second doping type layer is located on the side, away from the first doping type layer, of the visible light sensing layer, the second doping type layer is not adjacent to the visible light sensing layer, and a short wave infrared sensing layer is formed between the second doping type layer and the visible light sensing layer. The visible light sensing layer and the short-wave infrared sensing layer are adjacent and horizontally arranged, and are electrically led out by using the same charge transport layer, so that a horizontal PIN structure is formed, and the response speed is greatly improved on the basis of realizing visible light and short-wave infrared large-range wave band response.

The invention relates to a CIS device and a manufacturing method thereof. The CIS device comprises a stacked substrate structure, the stacked substrate structure comprises a first pixel substrate and a second pixel substrate which are bonded with each other in the vertical direction, and at least one visible light pixel unit and at least one infrared light pixel unit are distributed on the stacked substrate structure in a non-overlapping mode in the transverse direction. The visible light pixel unit comprises a visible light sensing element formed in the first pixel substrate, and the infrared light pixel unit comprises an infrared light sensing element formed in the second pixel substrate. The visible light sensing element and the infrared light sensing element are respectively used for sensing visible light and infrared light which are incident from one side, far away from the second pixel substrate, of the first pixel substrate, and compared with a visible light pixel unit, an incident light signal of the infrared light pixel unit passes through a longer optical path before being detected, so that the infrared response capability is enhanced, and the detection efficiency is improved. And meanwhile, the incident light signal of the visible light pixel unit is short in optical path and low in depletion layer depth before being detected, so that the crosstalk risk between adjacent pixel units is low.

This invention relates to a control method for a hair processing device, a hair processing device, and a storage medium. The control method for the hair processing device includes acquiring a non-visible light sensing image and a depth image for characterizing depth information between a user and the hair processing device; determining real-time position information of the user's body part relative to the hair processing device based on the non-visible light sensing image and the depth image; calculating rotation parameters of the hair processing device based on the real-time position information; and controlling the hair processing device to rotate to follow the user's body part based on the calculated rotation parameters.

An image processing system includes: a visible light sensor configured to generate a visible light sensing signal; a visible light image signal processor (ISP) configured to generate a visible light image according to the visible light sensing signal; an invisible light sensor configured to generate an invisible light sensing signal; an invisible light ISP configured to generate an invisible light image according to the invisible light sensing signal; and an event detector configured to activate or deactivate the invisible light ISP depending on whether a particular event has occurred. The image processing system can be applied to a monitoring system.

The utility model discloses a mistaken electric shock prevention circuit, a PCB (Printed Circuit Board) and a touch button, and the mistaken electric shock prevention circuit comprises a key induction unit, an invisible light induction unit, an induction signal processing unit and a communication unit, the output end of the key sensing unit and the output end of the invisible light sensing unit are connected with the input end of the sensing signal processing unit, and the output end of the sensing signal processing unit is connected with the input end of the communication unit. The communication unit is used for realizing information interaction between the induction signal processing unit and external equipment; according to the mistaken touch prevention circuit, only when the key sensing unit and the invisible light sensing unit feed back the sensing signals to the sensing signal processing unit at the same time, the actual operation of a user can be confirmed, the possibility of mistaken touch is remarkably reduced through the double confirmation mechanism, the stability and reliability of the touch button in the working process are improved, and the user experience is improved. And unnecessary response or interference caused by misoperation is reduced.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

An apparatus can be configured to detect glare conditions and may include a photoelectric sensing circuit and a visible light sensing circuit. The photoelectric sensing circuit can be configured to periodically generate an illuminance signal indicating an illuminance value. The visible light sensing circuit can be configured to periodically record an image of a space at exposure times. The apparatus can receive the illuminance signal from the photoelectric sensing circuit and determine the current illuminance based on the illuminance signal. The apparatus can adjust the frequency at which the visible light sensing circuit records images based on the current illuminance. The exposure time can be determined based on the current illuminance and the type of glare condition. Images recorded at corresponding exposure times may cause pixels above a certain illuminance value to appear whitened. The apparatus can detect glare conditions at the locations of whitened pixels.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

The invention discloses a self-encoding and self-calibrating dual-band MOEMS optical fiber grating-like sensing system, which is characterized by comprising a sensing mechanism based on ultraviolet modulation band and visible light sensing band detection, the sensing mechanism comprises a dual-band optical fiber and a grating-like arranged on the outer side of the dual-band optical fiber, and the grating-like is arranged on the outer side of the dual-band optical fiber. The grating-like structure is formed by filling a plurality of groups of MOEMS periodic grooves and ZnO grooves, and self-adjustment of the grating-like structure is realized through ultraviolet light intensity coding. According to the sensing mechanism, the barrier that the sensing characteristics cannot be changed after a traditional grating is processed is broken through, the existence and the strength of the grating can be realized through optical band coding, so that a coding self-adjusting function on an ultraviolet spectrum according to the characteristics of data to be collected is realized; secondly, time domain demodulation calculation can be utilized, interference of interference variables such as temperature and pressure on a traditional grating is removed, and the method has good practicability.

The embodiment of the invention provides an indoor visible light communication perception integrated wave beam design method and device. The method comprises the following steps: constructing an indoor visible light communication perception integrated system, wherein the system comprises a plurality of visible light communication access points and user equipment; establishing a visible light signal model, wherein the visible light signal model is used for describing transmitting and receiving processes of a visible light communication signal and a visible light sensing signal in a multi-user environment; based on performance optimization requirements, the visible light communication beams and / or the visible light sensing beams are optimized, an optimized beam forming matrix is obtained, and the performance optimization requirements comprise visible light communication priority, visible light sensing priority and joint optimization; and performing signal transmission based on the optimized beam forming matrix. According to the technical scheme of the embodiment of the invention, visible light communication and visible light sensing beams can be effectively optimized, and the performance of an indoor visible light communication and sensing integrated system is improved.

The present invention discloses a method and system for visually detecting mist gas leaks based on visible light sensing equipment. The method utilizes the visible light sensing equipment to obtain a global image of the leakage scene in real time, and also obtains an image of the suspected leakage area. The image data within the area is preprocessed to obtain a grayscale image and an RGB image. The RGB image is subjected to mist gas leak transmittance and mist gas leak consistency feature extraction to obtain high-dimensional transmittance features and high-dimensional consistency features of the RGB image. The pre-grayscale image is subjected to mist gas leak uniformity and HOG feature extraction to obtain high-dimensional uniformity features and high-dimensional HOG features of the grayscale image. The four extracted feature sets are respectively introduced into four SVM classification models. Confidence is introduced into the classification models to optimize weights in real time. An adaptive weighted voting algorithm is designed to integrate the prediction results of the four base classifiers and output the final gas leakage status. The present invention is low-cost, highly versatile, and improves the accuracy of mist gas leakage status determination.

The application discloses an application of a self-driven perovskite photoelectric detector in a visible light photosensitive chip. The self-driven perovskite photoelectric detector comprises electrodes, a first charge transport layer, a second charge transport layer and a perovskite layer; wherein the perovskite layer is a thin film in an interdigital structure formed by low-dimensional and three-dimensional perovskite, and the low-dimensional perovskite is any one or a combination of zero-dimensional, one-dimensional and two-dimensional; the first charge transport layer is one or a combination of a hole transport layer and an electron blocking layer, and the second charge transport layer is one or a combination of an electron transport layer and a hole blocking layer; or the first charge transport layer is one or a combination of an electron transport layer and a hole blocking layer, and the second charge transport layer is one or a combination of an electron transport layer or a hole blocking layer. The perovskite photoelectric detector solves the problem that the application of the existing silicon-based and perovskite visible light detectors is limited due to the insufficient visible light detection performance.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

The application belongs to the technical field of semiconductor process, and discloses a three-waveband image sensor and a manufacturing method thereof. The image sensor comprises a substrate layer, a silicon oxide layer, an aluminum oxide layer, a first electrode layer, an ultraviolet light sensing layer, a visible light sensing layer, an infrared light sensing layer, a second electrode layer and a passivation layer which are sequentially stacked. A plurality of rectangular grooves with the same shape and distributed at a preset interval penetrate the second electrode layer, the infrared light sensing layer, the visible light sensing layer and the ultraviolet light sensing layer in sequence. The ultraviolet light sensing layer adopts intrinsic aluminum arsenide material. The visible light sensing layer adopts intrinsic gallium arsenide material. The infrared light sensing layer adopts intrinsic germanium material with a 6-degree bevel. The passivation layer uniformly covers the inner walls of the second electrode layer and each rectangular groove. The application can solve the problems of lattice mismatch and polarity mismatch between the three sensing layers in the prior art, reduce manufacturing cost and be suitable for mass production.

An image processing system, comprising: a visible light sensor, configured to generate visible light sensing signals; a visible light ISP (image signal processor), configured to generate visible light images according to the visible light sensing signals; an invisible light sensor, configured to generate invisible light sensing signals; an invisible light ISP, configured to generate invisible light images according to the invisible light sensing signals; and an event detector, configured to activate or inactivate the invisible light ISP according to if a specific event occurs. The image processing system may be applied to a surveillance system.