39 results about "Photonic sensor" patented technology

The invention discloses a portable thermoluminescence dosage device based on photon counting, and relates to the technical field of nuclear radiation detection equipment, the portable thermoluminescence dosage device comprises a shell, a rack, a heating module, a photon counting module and a movement module, and accurate measurement is realized through cooperation of multiple modules. In the motion module, a cam shaft, a rotating handle and a rolling bearing are matched to drive a heating cavity to drive a heating plate to move flexibly, and a guide hole of a heating supporting table guarantees moving stability. The dosage piece positioning plate accurately positions the dosage piece, the heating plate stably heats, and the reset spring buffers and assists the heating cavity in resetting, so that the device is ensured to run circularly. The filter group is accurately mounted and is matched with the sealing ring to isolate external interference, so that the detection accuracy of the photon sensor is improved, and the measurement precision is guaranteed. The device shell is provided with the display screen and the charging interface, data can be displayed in real time, charging is convenient, portability and practicability are enhanced, and the device is suitable for portable thermoluminescence dosage measurement in multiple scenes.

The invention discloses an intelligent power transmission and transformation monitoring and fault early warning system based on Internet of Things, which relates to the technical field of power transmission and transformation monitoring and Internet of Things and comprises a data acquisition layer, a network transmission layer, a data processing layer and an early warning display layer. The functions of quantum encryption communication and self-diagnosis repair are achieved; multi-element networking is adopted for network transmission, quantum key distribution and a block chain are combined, an SDN and SD-WAN fusion architecture is used, a three-layer architecture is used for data processing, a quantum neural network and knowledge graph assistance is used, an MR technology and a brain-computer interface are used for early warning display, and all layers collaboratively guarantee efficient operation of the system. The system has obvious advantages, data acquisition is comprehensive and safe, and the sensor can be self-diagnosed and repaired; network transmission is stable and reliable, and data security is guaranteed; data processing is accurate and efficient, and early warning accuracy is improved; the early warning display interactivity is high, the equipment can be scientifically evaluated, the maintenance decision is optimized, the cost is reduced, and the stable operation of the power transmission and transformation system is ensured.

A gas sensing system includes a packaged photonic sensor including a resonant sensor and a control system. The control system includes a light module, a receiver module, and a core module. The light module includes a light source to generate light and transmit it to the photonic sensor. The receiver module receives light signals from the photonic sensor and converts them to digital signals. The core module includes a computing device and is programed to: control the light module to cause the light module to generate and transmit light to the packaged photonic sensor, receive the digital signals from the receiver module, and detect one or both of a concentration of a gas that interacted with the resonant sensor and an identification of the gas whose molecules interacted with the resonant sensor based at least in part on the received digital signals from the receiver module.

In embodiments disclosed herein, a method for calibrating a photonic sensor includes collecting a plurality of concentration measurements with a photonic sensor with a plurality of different reference gas mixtures under various temperature and pressure environments, where each reference gas mixture includes a known species concentration, and implementing a parameter optimization routine to minimize deviations between the known species concentrations and the plurality of concentration measurements obtained by the photonic sensor, where the optimization routine generates one or more calibration constants. In an embodiment, the method may further include integrating the one or more calibration constants into a modified concentration formula, and storing the modified concentration formula in a controller used to operate the photonic sensor.

In embodiments disclosed herein, a method for calibrating a photonic sensor includes collecting a plurality of concentration measurements with a photonic sensor with a plurality of different reference gas mixtures under various temperature and pressure environments, where each reference gas mixture includes a known species concentration, and implementing a parameter optimization routine to minimize deviations between the known species concentrations and the plurality of concentration measurements obtained by the photonic sensor, where the optimization routine generates one or more calibration constants. In an embodiment, the method may further include integrating the one or more calibration constants into a modified concentration formula, and storing the modified concentration formula in a controller used to operate the photonic sensor.

The invention provides a method for processing fusion information based on an inertia-dynamic vision-single photon sensor, relates to the technical field of visual information processing, and aims to solve the technical problem that an existing on-chip training algorithm is difficult to meet actual requirements due to overlarge calculated amount and serious resource consumption. The method comprises the following steps: acquiring moving posture information of a target, dynamic information of the target in a specified area scene and static detail information of the target in the specified area scene; inputting the acquired information into a pulse neural network for identification processing to obtain a classification result; wherein the training process of the spiking neural network comprises a first stage and a second stage; the first stage is used for performing ternary weight processing on the spiking neural network and quantizing and reducing weight data of the spiking neural network; and the second stage is used for carrying out gradient simplification processing on the spiking neural network obtained through training in the first stage through a lightweight single-layer space-time back propagation algorithm, and optimizing the calculation efficiency of the spiking neural network.

An apparatus for photonic biosensors for multiplexed diagnostics and a method of use are disclosed. The apparatus includes a portable device configured for point-of-care diagnostics. The portable device includes a photonic sensor chip that includes one or more resonators that is substantially in contact with at least a fluid that includes one or more analytes and the reader device communicatively connected to the photonic sensor chip that includes at least a light source and the reader device is configured to provide an input optical signal using the at least a light source, receive the one or more sensor signals from the photonic sensor chip and determine one or more characteristics of the one or more analytes as a function of the one or more sensor signals and a connecting system, wherein the connecting system is configured to connect the photonic sensor chip and the reader device.

This invention discloses a three-dimensional waveguide glass chip based on CPO (Continuous Photonic Optical Array) with an integrated weak-reflection grating sensor array, relating to the field of integrated photonic sensors. The three-dimensional waveguide glass chip of this invention has a multi-core single-mode fiber array connection unit on the left end and a single-mode multi-core fiber optic connection unit on the right end, connected in the middle by a femtosecond laser direct-write multi-channel three-dimensional waveguide. The end directly connected to the optical chip also integrates a weak-reflection fiber grating for temperature measurement. Simultaneously, multiple three-dimensional waveguide glass chips connect to the optical chip, forming a grating temperature sensing array. The signal processing end uses host computer software to perform real-time online monitoring of optical loss and the periphery of the optoelectronic chip interface. This three-dimensional waveguide high-density optical connector with an integrated weak-reflection grating sensor array for CPO applications features low loss, low power consumption, high capacity, and multifunctionality, and can monitor chip temperature and interface quality using non-primary communication bands.

A method and system for detecting and measuring the braking force of a vehicle's brake system using photonic sensors integrated into brake pads is described. A method for detecting and measuring the clamping force (CF) and / or brake torque (BT) resulting from the operation of a vehicle's friction brake system by detection performed in the brake pads (10) of the brake system is described. The method includes encapsulating at least one optical fiber strain sensor (2) in a casing (9) and incorporating the casing (9) into a respective portion of a friction-sensitive friction material (M) attached to a base plate or platform (11) of the brake pad (10). The shear strain (St-eff) of the casing (9) acting in a tangential reference direction (x) represents the tangential force (Ft) acting on the brake pad (10), and the normal force (Fn-eff) of the casing (9) acting in a normal reference direction (y) represents the normal force (Fn) acting on the brake pad (10). The method includes detecting, by the optical fiber strain sensor 2, a first strain S1 (present at a first location on the casing along a first spatial direction w1) based on both a normal force Fn-eff and a tangential strain St-eff acting on the casing 9 at the first location, and detecting, by the optical fiber strain sensor 2, a second strain (present at a second location on the casing along a second spatial direction w2) based on both the normal force Fn-eff and the tangential strain St-eff acting on the casing 9 at the second location. The method includes generating, by the optical fiber strain sensor 2, a first photonic signal L1 representative of the first detected strain S1 and a second photonic signal L2 representative of the second detected strain S2, and receiving, by an optical reading / interrogation unit 4 optically connected to the optical fiber strain sensor 2, the first photonic signal L1 and the second photonic signal L2. The method ultimately involves determining, by the optical reading / interrogation unit 4, a value of the first strain S1 and a value of the second strain S2, respectively, based on the first received optical signal L1 and the second received optical signal L2, and determining a measurement value of the clamping force CF and / or the brake torque BT based on the determined values ​​of the first strain S1 and the second strain S2.

A guided mode resonance (GMR) sensor that can be used to simultaneously detect an array of analytes. It provides a diagnostic system that can rapidly detect an array of biomarker proteins in patient samples (such as blood, serum or plasma for example) which can be used as an accurate means to conduct a differential analysis of proteins that allows the discrimination of early and late stages of disease, such as metastatic versus primary ovarian serous carcinomas. The GMR sensor can be provided in a compact size such that it can be portable.

A method for detecting and measuring a braking force and / or a braking torque deriving from actuation of a vehicle braking system includes incorporating a fiber-optic strain sensor of fiber Bragg grating type in a respective position in a portion of material of the body of the brake caliper susceptible to deformation, detecting, by the fiber-optic strain sensor local deformation and / or strain acting in the respective position, generating a respective first photonic signal representative of the detected deformation and / or strain, receiving the first photonic signal, by an optical reading / interrogation unit optically connected to the fiber-optic strain sensor, generating, by the optical reading / interrogation unit, a first electrical signal representative of the local detected deformation and / or strain, based on the received first photonic signal, and processing the first electrical signal to obtain a measurement of the braking force and / or braking torque. A sensorized brake caliper and a corresponding system to detect and measure a braking force and / or braking torque are also described.

Provided is a two-photon spectroscopy including a light source configured to generate first laser light having a pulse, a pulse width correction device configured to receive the first laser light to output a second laser light, an optical system through which the second laser light passes, a first two-photon sensor configured to measure a first pulse width of the first laser light generated from the light source, and a second two-photon sensor configured to measure a second pulse width of the second laser light passing through the optical system, wherein the pulse width correction device corrects a difference between the first pulse width and the second pulse width.

In one or more amendments, an apparatus has an ion source and a sensor. The ion source can send a pulse or a pulse chain of ions to a target to cause the target to emit photons. The sensor can detect photons emitted from the target. The pulse or pulse chain of ions have a 10-500 ns pulse width and a current density between 1-10,000 A / cm2.

A photon peak event detection system accepts an analog output from a photon sensor, directly digitizes the analogy output and includes a graphics processing unit (GPU) programmed to conduct a photon peak event detection in real-time via a photon count program that analyzes the digitized photon sensor output in sampling periods each having at least three consecutive data points to determine a local maximum among the consecutive data points and compare the local maximum to one or more predetermined thresholds to determine whether or not a photon was received in each sampling period, the algorithm providing photon counts to a phasor analysis program in the GPU. The phasor analysis program calculates pixelwise fluorescence lifetime phasor data in real-time and sends the data to a central processing unit.

The present system(s) and method(s) use an integrated photonic sensor to determine tilt angle present at the metrology region or mark. The integrated photonic sensor uses two pairs of grating couplers, each pair having an emitting grating coupler and a capturing grating coupler. The positions of the grating couplers may be fixed where a first capturing grating coupler will capture a peak captured light value of its paired emitting grating coupler when the angle of tilt at the region is a positive angle, and a second capturing grating coupler will capture a peak captured light value of its paired emitting grating coupler when the angle of tilt at the region is a negative angle. Using this fixed configuration and knowing the tilt angles at which peak coupling efficiencies would be captured, a ratio is computed using the two captured light values. A tilt angle is determined using this ratio.

The present invention relates to a conversion device, or commonly called transimpedance amplifier, able to convert an input electric current (Id) from a current source such as a photonic sensor (D) into an output voltage (Vo) and comprising an integrated electronic circuit comprising, inter alia, a resistive component (Rf) of adjustable value and a capacitive component (Cf) of adjustable value. The invention also relates to a method for determining the values of the resistive component and of the capacitive component.

1. Name of the product in this design: High-speed silicon photonics sensor chassis (standard type). 2. Application of this design: This design is the chassis of a "high-speed silicon photonics sensor query instrument", used to carry and protect the internal optical signal detection and demodulation module. It is suitable for special industrial environments with high electromagnetic interference, flammable and explosive materials. The high-speed silicon photonics sensor uses laser detection technology to demodulate signals from silicon-based / fiber-based sensors such as Fabry-Perot cavities and Bragg gratings to measure physical quantities such as temperature, pressure, and acceleration. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses an underwater laser ranging method, and relates to the field of ranging methods. The underwater laser ranging method comprises the following steps: S1, acquiring a plurality of signal peaks; s2, calculating a confidence coefficient; s3, filtering invalid peaks; s4, selecting an effective peak; s5, carrying out multi-frame filtering processing; and S6, outputting a distance measurement result. According to the underwater laser ranging method, a single-photon DTOF sensor is adopted to obtain a multi-peak signal, and confidence calculation, multi-condition filtering and self-adaptive peak selection strategies are comprehensively utilized, so that a target reflection peak and interference peaks such as water scattering, cover plate crosstalk and sunlight noise can be effectively distinguished; therefore, the real target distance is accurately locked in the complex underwater environment, the problems of inaccurate distance measurement and failure caused by signal confusion in a traditional method are solved, and the method adapts to different water quality conditions from clear to turbid by introducing a multi-frame filtering algorithm and a dynamic threshold technology and combining with special processing logic for turbid water and clear water.

The metrology system (s) and method (s) described herein eliminate the need for separate focus branches commonly used in existing metrology systems to determine focus positions for imaging a substrate. The focus position is determined using an integrated photon sensor instead of using a separate focus branch. The integrated photon sensor is based on apodized grating couplers in which the amplitude and phase of the grating coupler mode are designed to have optimal coupling efficiency for a particular defocus (or initial / known focus position) by varying the grating period and / or duty cycle. A coupling efficiency between the emission grating and the reception grating is determined based on emitted radiation and reflected radiation received from the substrate, the emitted radiation having a particular amplitude and a particular phase configured for a known position relative to the substrate. A focus position is determined based on the coupling efficiency and the known position.

1. Name of the product in this design: Optical Fiber Adapter. 2. Purpose of this product design: It is used to connect different types of silicon photonic sensors on branch lines, and to connect multi-core optical cables to the main line outlet through the optical cable adapter and connect to the silicon photonic sensor query instrument. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The present invention relates to a photon sensor capable of implementing quasi-distributed temperature detection within an IGBT (Insulated Gate Bipolar Transistor). The photon sensor comprises an insulating interface, a main channel waveguide, and at least one photon sensing component. The photon sensing component comprises a microring resonant cavity, a single-mode optical fiber, and a photon chip. Each microring resonant cavity is coupled to the main channel waveguide, and each microring resonant cavity is connected to the photon chip via a coupled single-mode optical fiber. By adjusting the number of photon sensing components and combining the microring resonant cavities to implement wavelength division multiplexing, a quasi-distributed network topology capable of simultaneously measuring multiple points in a confined space is achieved. This significantly reduces the number of IGBT external interfaces, improves the flexibility and practicality of the entire system, and better meets engineering safety requirements. Different network topologies can be designed based on the number of IGBT internal temperature detection points required. Compared to other multiplexers, the sensor also offers advantages such as low cost, high integration, low crosstalk, and flat output.

An odor-localizing autonomous air vehicle includes an airborne robotic platform having a navigation platform, a wireless transmitter communicatively coupled to a management console, and an olfactory sensor mounted on the airborne robotic platform that reacts to at least one olfactory odor. A controller is communicatively coupled to the airborne robotic platform, the navigation platform, and the biological sensor. The controller monitors the olfactory sensor. In response to the biological sensor detecting the at least one olfactory odor, the controller directs the airborne platform to three-dimensionally map an olfactory plume of the at least one olfactory odor using an olfactory-driven search pattern. The controller stores the three-dimensional map for later retrieval or transmits the three-dimensional map of the olfactory plume to the management console via the wireless transmitter. The olfactory sensor is a photonic crystal enclosure that contains plasmonic nanoparticles.

A method is described for detecting and measuring at least one dynamic mechanical quantity and one thermal quantity, associated with the application of a load to a system or component, by means of detection performed in an element (10) of the system or component. The method involves arranging in a casing or housing (9) at least two pairs of optical fibre sensors (1, 2), each capable of detecting a mechanical strain and a thermal quantity; then, incorporating into the element (10) the casing or housing (9), so that it undergoes deformation caused by and indicative of the dynamic mechanical quantity acting on the element and so that it is subject to a thermal condition dependent on the thermal quantity present in the element, and thereby representative of the thermal quantity. The casing or housing (9) is designed to transmit the aforementioned thermal condition to the optical fibre sensors. The step of arranging at least two pairs of optical fibre sensors involves placing a first pair of optical fibre sensors 1 in mechanical contact with the casing or housing (9), ensuring that the deformation or strain of the casing or housing is transmitted to the optical fibre sensors of this first pair (1). Additionally, a second pair of optical fibre sensors (2) is arranged in such a way that the optical fibre strain sensors of this second pair (2) are mechanically isolated from the casing or housing (9), ensuring they are not affected by the dynamic mechanical quantity, but only by the aforementioned thermal quantity. The method involves each optical fibre sensor in the first pair (1) detecting a mechanical strain indicative of the respective deformation of the casing or housing, thereby providing a first result dependent on both the dynamic mechanical quantity and the thermal quantity. Each optical fibre sensor in the second pair (2) provides a second result dependent solely on the thermal quantity. The method finally involves determining the at least one dynamic mechanical quantity and the thermal quantity, based on the aforementioned first and second results. A device and a sensorized pad capable of implementing the aforementioned method are also described.

To provide a detection device capable of suppressing deterioration in sensing accuracy.SOLUTION: The detection device includes a sensor panel in which a plurality of optical sensors are arranged, a light source, and a control circuit. The detection target placed between the sensor panel and the light source is provided with a culture medium capable of culturing colonies. The control circuit repeats an acquisition process of obtaining outputs of the plurality of optical sensors, and performs a comparison process of comparing a first output obtained in a first acquisition process with a second output obtained in a latest acquisition process. The comparison processing includes first comparison processing for comparing the outputs of the respective optical sensors, and second comparison processing for comparing the outputs of the respective optical sensors in a region unit including a certain optical sensor and its peripheral optical sensors. The control circuit determines that the output of the optical sensor having the difference equal to or larger than the predetermined value in the first comparison processing and having the difference equal to or larger than the predetermined value in the second comparison processing with the optical sensor satisfying the first condition as one optical sensor is the output of the optical sensor overlapping the colony.SELECTED DRAWING: Figure 9

Effective quantum communication is achieved by room temperature (RT) operating single photon sensor with high photo detection efficiency (PDE) at 1550 nm wavelength. The leading class of devices in this segment is avalanche photo detectors operating particularly in the Geiger mode. A device is provided which employs a two-dimensional (2D) semiconductor material on a co-optimized dielectric photonic crystal substrate to simultaneously decrease the dark current by orders of magnitude and increase the PDE. The device is predicted to achieve RT operation with a PDE >99%. Harnessing the high carrier mobility of 2D materials, the device has ˜ps jitter time and can be integrated into a large 2D array camera.

This application relates to a traffic signal light system based on cadmium telluride (CdTe) power-generating glass, belonging to the technical field of solar energy applications. The system comprises: a signal light and CdTe power-generating glass, wherein the CdTe power-generating glass is connected to an inverter and connected to the signal light via the inverter; a mounting bracket mounted on the signal light's light frame, on which the CdTe power-generating glass is mounted, wherein the light frame includes a lateral drive assembly and a vertical drive assembly; a photon sensor mounted on the front of the CdTe power-generating glass for detecting the angle of illumination; and electronic equipment connected to the photon sensor, the lateral drive assembly, and the vertical drive assembly, respectively. Based on the illumination angle transmitted by the photon sensor, the electronic equipment generates a lateral movement instruction and a vertical drive instruction, causing the lateral drive assembly to respond to the lateral drive instruction and the vertical drive assembly to respond to the vertical drive instruction, thereby allowing the front of the CdTe power-generating glass to receive sunlight. This application has the effect of improving the photoelectric conversion efficiency of the CdTe power-generating glass.

A system for calorimetry includes a well having a volume for receiving a sample, an input feature to facilitate reception of the sample in the well, a light source to irradiate the well and the sample with incident light, and a photonic sensor chip disposed at the bottom of the well. The photonic sensor chip includes plural nanohole array (NHA) sensors. A light detector is configured to measure transmission of light through the NHA sensors to obtain a series of extraordinary optical transmission (EOT) measurements. Frame elements secure and mutually couple the light source, the photonic sensor chip, the light detector, and the input feature to form a calorimetry unit. A processor is configured to calculate a calorimetry measurement as a function of the series of EOT measurements, the calorimetry measurement being indicative of energy released as a result of the sample in the well undergoing a change.

The invention discloses a high-frame-rate reconfigurable single-photon sensor integrated circuit. The high-frame-rate reconfigurable single-photon sensor integrated circuit comprises a reconfigurable photoelectric detector macro-pixel array and a high-bandwidth reconfigurable front-end circuit, the macro pixel array is used for being configured into macro pixel arrays with different macro pixel scales and processing current output by the macro pixel array to obtain output current; the front-end circuit is used for being configured as a current subtraction and comparison circuit or a buffer and transimpedance amplification circuit and outputting a voltage signal output by any one of the two circuits; the high-frame-rate reconfigurable single-photon sensor integrated circuit is used for working in any one of a long-distance low-signal-to-noise-ratio ranging mode, a high-signal-to-noise-ratio high-precision ranging mode and a high-signal-to-noise-ratio high-frame-rate ranging mode. The reconfigurable silicon-based single-photon sensor chip solves the problems that the reconfigurable silicon-based single-photon sensor chip is single in structure, and high-frame-rate, high-precision and low-signal-to-noise-ratio detection restricts one another.

The invention provides a visual task device based on inertia-dynamic vision-single photon sensor fusion, relates to the technical field of visual information processing, and aims to solve the technical problem that existing intelligent visual equipment is poor in performance in a complex scene. The device comprises an inertial sensor used for determining motion attitude information of a target according to speed information; the dynamic vision sensor is used for acquiring dynamic information of a target in a specified area scene; the single-photon sensor is used for acquiring static detail information of a target in a specified area scene; and the information processor is used for calculating and processing the moving posture information, the dynamic information and the static detail information and outputting a calculation result. According to the device, the inertia-dynamic vision-single photon sensor is combined, information complementation is achieved through the processor, then comprehensive scene perception under the complex condition is achieved, the accuracy of the device for conducting the intelligent vision task is improved, and the device can be suitable for the vision task under the complex scene.

1. Name of the product in this design: High-speed silicon photonics sensor chassis (portable). 2. Application of this design: This design is the chassis of a "high-speed silicon photonics sensor query instrument", used to carry and protect the internal optical signal detection and demodulation module. It is suitable for special industrial environments with high electromagnetic interference, flammable and explosive materials. The high-speed silicon photonics sensor uses laser detection technology to demodulate signals from silicon-based / fiber-based sensors such as Fabry-Perot cavities and Bragg gratings to measure physical quantities such as temperature, pressure, and acceleration. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1.