81 results about "Fiber probe" patented technology

The invention relates to the technical field of medicine quality detection, and particularly discloses an optical detection method and system for the content of vitamin tablets. The method comprises the following steps: driving an optical fiber probe array to carry out three-dimensional multi-angle near-infrared scanning through a multi-axis mechanical arm, and collecting reflection spectrum data; a weighted spectrum is generated through derivative spectrum analysis and double evaluation, and auxiliary material noise is corrected and separated in combination with subspace projection and a dynamic kernel function; performing spectral vector projection and regression coefficient iterative optimization through an online PLS model, and synthesizing an error coefficient based on a four-level index retrieval standard library to perform dual-channel feedback; and finally, fusing the credibility weight to output a detection result of the binding confidence. The method realizes nondestructive and high-precision detection of the vitamin tablets, has the beneficial effects of multi-dimensional data fusion, dynamic error compensation and high model adaptability, and remarkably improves the detection accuracy and reliability.

The invention discloses a material quality detection system, method, medium and equipment, the material quality detection system comprises a feeding module, a conveying module, a spectrum detection module, a visual detection module, a sorting module and an information management module, the spectrum detection module is arranged at the downstream of the conveying module; comprising a camera obscura, a visible near-infrared spectrometer, a plurality of optical fiber probes, a plurality of first light sources, a plurality of second light sources, a laser distance measuring sensor and an adjustable rack, and the adjustable rack is arranged on the inner wall of the camera obscura and located above a conveying module. The information management module controls the adjustable rack to move so as to drive the multiple optical fiber probes, the multiple first light sources and the laser distance measuring sensor on the adjustable rack to move, and the multiple second light sources are arranged in the camera obscura and located below the conveying module. By arranging the spectrum detection module with the adjustable rack, optical signals of materials can be received from multiple angles, and multi-mode detection such as diffuse reflection, slow transmission and transmission is achieved.

The invention discloses a dual in-line packaging integrated circuit rib cutter, and belongs to the technical field of integrated circuit packaging. Comprising a supporting column, a base plate, a three-axis adjustable air cylinder, an air cylinder adapter, a cutter seat, a lower cutter gasket, a lower cutter, a positioning block, an upper cutter, a scraping piece, a scraping piece three-axis air cylinder, a probe seat, a correlation optical fiber probe, an optical fiber amplifier, a PLC, a cutter electromagnetic valve and a scraping piece electromagnetic valve. The integrated design of a lower installation part, a stroke-adjustable lower cutter, an elastic pressing cutter and an upper cutter is adopted, and the design that waste is automatically scraped, product rib cutting is automatically detected, and rib cutting is conducted on the two sides of a product step by step is adopted. The rib cutting machine has the advantages of high rib cutting quality, high rib cutting speed, wide product adaptability and simple and reliable structure. The problems that in an existing full-manual rib cutting technology, the rib cutting operation labor intensity is large, the rib cutting quality consistency is poor, the rib cutting efficiency is low, the side rib splashing direction cannot be controlled, and lower cutters collide with one another are solved. The cutting device is applied to the technical field of cutting of the pin edge ribs of the dual-in-line packaging shell of the electronic component.

Improvements in spectroscopy are disclosed herein that rely on the interaction of both an infrared beam and a probe beam with a sample. These beams are used in a pump-probe arrangement, with a fiber optic probe collecting the beams of infrared and probe radiation from the infrared source and delivering it to the sample. At least a portion of the beam of infrared radiation and the beam of probe radiation overlap one another on the sample. The fiber also collects probe radiation that has interacted with the sample. A detector can use this collected signal to indicate an intensity of the collected probe radiation, and an analyzer can generate a signal indicative of infrared absorption of the sample adjacent the fiber.

A diagnostic platform for detecting and analyzing brain tumors includes a portable fiber Surface Enhanced Raman spectroscopy (SERS) module, a removable fiber probe for intraoperative use, disposable nanoplasmonic cartridges for individual sample loading, and an updatable spectral library collected from healthy and diseased samples. The platform is designed to analyze blood and tissue signatures and employ artificial intelligence (Al) models to classify SERS spectra based on an updatable proteomics and SERS spectral library encompassing distinct brain tumor types. The platform is further configured to utilize artificial intelligence (Al) algorithms for the analysis and classification of the recorded SERS spectra.

The present invention provides a light-emitting fiber probe capable of emitting light with high beam quality in a direction inclined relative to an axial direction of an optical transmission cable. A light-emitting fiber probe 1 is mounted in medical equipment for treatment and includes: an optical transmission cable 10 through which light emitted from a light source is transmitted; and a light refraction unit 20 provided on a side of the front end 13 of the optical transmission cable 10, which, via two or more refractive surfaces 21, refracts laser light L emitted from the optical transmission cable 10 to emit light inclined by a predetermined angle or greater relative to an axial direction X of the optical transmission cable 10.

This invention belongs to the field of laser cladding detection technology, specifically relating to a method for extracting and analyzing spectral signal features during the cladding process of PDC drill bits. The method includes: acquiring a real-time plasma spectral sequence of the PDC drill bit cladding process using a fiber optic probe and spectrometer; obtaining spectral line effectiveness weights based on the intensity and signal-to-noise ratio of characteristic spectral lines in the plasma spectral sequence; obtaining elemental fusion state indices based on the spectral line effectiveness weights, the intensity of hard phase spectral lines, and the intensity of binder phase spectral lines; obtaining cladding quality stability based on the elemental fusion state index and plasma electron density fluctuations; and determining cladding defects in the PDC drill bit based on the cladding quality stability. This invention effectively suppresses the interference of strong background noise on the monitoring results by integrating spectral signal-to-noise ratio weights and electron density fluctuation characteristics, thus improving the accuracy of detecting component segregation and thermodynamic instability in the cladding layer.

A system includes a light source configured to emit treatment light and an optical coherence tomography (OCT) device. The system further includes a surgical instrument including a distal portion configured to be inserted into an eye of a patient. An optical fiber is coupled to the light source and to the OCT device and (a) conducts the treatment light along the distal portion to be emitted from a tip of the distal portion and (b) conducts detection light from the OCT device along the distal portion to be emitted from the tip of the distal portion and conduct a reflected portion of the detection light to the OCT device. A controller obtains image data from the OCT device and operates the light source per the image data, e.g., selects a number of pulses for the treatment light based on a thickness of a trabecular meshwork apparent in the image data.

The embodiment of this specification discloses a method for preparing a carbon fiber probe. The method comprises inserting a carbon fiber into a glass tip with a conical opening tip; using epoxy resin glue to seal and bond the carbon fiber and the glass tip, and allowing one end of the carbon fiber to partially leak out of the conical opening tip; using hot melt glue to cover the partial carbon fiber, and leaking out the tail end of the partial carbon fiber; fixing the sealed glass tip and the carbon fiber as a whole, and polishing one end of the carbon fiber to a smooth plane in cross section; using conductive silver glue to connect a metal wire to the other end of the carbon fiber, thereby forming a carbon fiber probe with one end of the polished carbon fiber as the working electrode and the metal wire as the electrode outlet. The manufacturing process is low-cost and simple to process. The manufactured carbon fiber probe has a flat and smooth interface, stable performance itself, and more accurate subsequent measurement results.

The application provides a conical double-clad fiber probe integrated with photoacoustic excitation and detection, which integrates pump light excitation and detection light sensing through a conical double-clad fiber, integrates functions such as photoacoustic excitation, gas-light interaction and interference detection in a micro probe, effectively simplifies the device structure, reduces the volume, and significantly improves the integration and compactness. At the same time, the conical part of the conical double-clad fiber can realize lateral diffusion of pump light, so that it can fully act on the measured gas in the closed gas chamber without additional configuration of optical components such as mirrors, and the problem of weak photoacoustic signal in a small space is improved. In addition, the application uses a fiber Fabry-Perot interference structure to complete vibration detection with a polyimide diaphragm, replacing the traditional electronic detector, having excellent anti-electromagnetic interference capability, and can accurately identify weak vibration signals, effectively improving the sensitivity and operation stability of gas detection.

To make it easy to confirm the orientation of the protective window. [Solution] A method for inspecting the surface orientation of the first surface of an optical temperature sensor comprising a cylindrical fiber probe through which an optical fiber is inserted, and a protective window portion made of sapphire and located on the tip side of the fiber probe, wherein the surface of the protective window portion opposite to the optical fiber in the axial direction of the fiber probe is formed as the first surface and the surface on the optical fiber side is formed as the second surface, wherein coaxial incident illumination is shone on the first surface.

The present invention provides a light radiating fiber probe that can emit light with high beam quality in a direction inclined relative to an axial direction of an optical transmission cable. A light radiating fiber probe 1 is mounted in medical equipment for treatment, and includes: an optical transmission cable 10 through which light emitted from a light source is transmitted; and a light refracting unit 20 provided on a leading end 13 side of the optical transmission cable 10 and refracting, via two or more refracting surfaces 21, laser light L emitted from the optical transmission cable 10 to emit light inclined by a predetermined angle or larger relative to an axial direction X of the optical transmission cable 10.

The invention discloses a spectral measurement device and method for dynamically and controllably applying force and temperature. The device comprises a base, a liftable platform, a sample fixing device, a force loading kit, a heating plate, a heat preservation component and a spectrum acquisition system. The force loading suite can apply a periodic mechanical load with stable amplitude through eccentric transmission and force feedback control; the optical fiber probe is coaxially arranged along the hollow loading component to realize high matching of loading and a spectrum acquisition path; the sample fixing device and the heating plate are matched with the heat preservation component to form a constant-temperature light-proof environment, so that stable test conditions are provided. The problems that in the prior art, mechanical loads are difficult to load stably, temperature distribution is uneven, and spectrum collection is prone to being interfered are solved, synchronous, stable and high-fidelity collection of luminescent spectrums under the dynamic coupling condition of force and temperature is achieved, repeatability and reliability of test results are improved, and the method is suitable for popularization and application. The method is suitable for dynamic spectrum collection under the multi-field coupling condition.

A method and system for extracting tissue optical parameters based on a long short-term memory network belongs to the technical field of the intersection of machine learning and biomedicine, and solves the problem of inaccurate extraction of tissue optical parameters caused by only utilizing part of the diffuse reflection light information and ignoring the correlation of spectral data sequence characteristics when extracting tissue optical parameters. The present invention introduces a long short-term memory network into a tissue spatial resolution diffuse reflection spectrum generation model, fully explores the correlation in spectral data points, and increases the model prediction ability while reducing model parameters. When training the tissue spatial resolution diffuse reflection spectrum generation model, the optical fiber probe structure is not considered, and all spatial resolution diffuse reflection spectra emitted from the tissue surface are included in a pre-data set, the data dimension is larger, and the model accuracy is higher after training, which effectively improves the accuracy of the tissue optical parameter and diffuse reflection spectrum mapping model, thereby improving the efficiency and accuracy of tissue optical parameter extraction.

A multifunctional fiber probe capable of optical, electrical, and chemical interrogation of neuronal brain circuits in vivo is disclosed. The fiber probe may include an optical waveguide to enable optogenetic stimulation and / or fiber photometry, one or more electrodes for electrical recording and / or stimulation, and a microfluidic conduit to deliver at a drug, a gene, and / or a chemical to a mammalian subject. The fiber probe may be MRI compatible. The fiber probe may have a minimal footprint and enhanced bio-compatibility due to its flexible materials, resulting in reduced inflammation relative to conventional deep brain stimulation probes. The fiber probe may allow for multisite optical, electrical, and viral perturbations and electrophysiological and photometric recordings.

The invention relates to the technical field of needle point enhanced nanometer spectrum, in particular to a chiral plasmon optical fiber probe, a preparation method thereof, a nanometer spectrum enhancement method and a nanometer spectrum enhancement system. The surface of the conical area of the probe is of a chiral spiral structure and is used for converting exciting light transmitted in the optical fiber into a nano focusing field at the tip of the probe, and the surface of the conical area of the probe is plated with a metal film; the chiral plasmon optical fiber probe provided by the invention can actively construct a plasmon nanocavity structure with an extremely strong electric field gradient with a single crystal substrate sample under the control of a scanning tunneling microscope; a strong gradient field in the nano-cavity structure can be efficiently coupled with electric quadrupole moment, magnetic dipole moment and the like of molecules, so that a transition state belonging to selection rule forbidden ring in a conventional Raman spectrum is effectively excited, and the technical bottleneck that a traditional TENS cannot detect high-order transition due to insufficient electric field gradient is broken through; and a more reliable technical means is provided for completely analyzing the molecular structure and the energy level characteristics.

Sampling optics for spectroscopic analysis include an array of optical elements as opposed to a single objective as used in conventional systems, achieving enhanced collection, inherent signal integration / averaging and improved measurement uniformity. At the same time, the etendue using the array is substantially the same as the etendue using a single-element objective. The array of closely packed optical elements may have spherical or aspherical surfaces and may be transmissive or reflective. An array of lenses and reflective elements may be arranged together in flow cell configurations and / or for signal amplification involving multiple passes through a sample medium. The array elements may be arranged in hexagonal, linear, radial or other packing geometries and may be implemented as a flat or curved panel. The present disclosure is applicable to remote fiber probes and flow cell geometries to measure solids, liquids, gasses and semi-liquid such as slurries.

The invention provides a novel micro-structure polymer optical fiber tetracycline sensor based on C3N4-MIL-53 sensitive material modification, which can realize low-cost, high-sensitivity and rapid detection of tetracycline concentration in water. The optical fiber probe is characterized in that the optical fiber probe is composed of a side-cast area and a microgroove area, and the surface of the side-cast area is sequentially coated with a layer of Canadian resin and a C3N4-MIL-53 sensitive film. Through the microgroove structure, most of light transmitted by the optical fiber can be concentrated in a specific angle range for transmission, so that the intensity of evanescent waves is effectively enhanced, and the sensitivity of the sensor is improved. The C3N4-MIL-53 sensitive material is adopted for modification, and the specific adsorption effect of the C3N4-MIL-53 sensitive material on tetracycline is utilized, so that the rapid, high-sensitivity and high-selectivity detection function of the sensor on the concentration of tetracycline in water is realized.

An optical temperature sensor includes a cylindrical fiber probe into which an optical fiber is threaded, and a protective window that is formed of sapphire and positioned on the distal end side of the fiber probe. The surface of the protective window opposite to the optical fiber in the axial direction of the fiber probe is formed as a first surface, the surface of the protective window facing the optical fiber is formed as a second surface, and the first surface is an a-face of the sapphire.

A kind of tip timing method and device based on laser Doppler effect, for realizing fiber tip timing;The method comprises the following steps: step S1, laser is sent out, through fiber beam splitter and laser is divided into first light beam and second light beam;Step S2, first light beam is irradiated to blade tip by temperature-resistant fiber probe, and the laser reflected by blade tip is received, signal light participating in interference is formed, and is sent to fiber combiner;Step S3, second light beam is sent to fiber combiner, and reference light participating in interference is formed;Step S4, signal light and reference light interfere to form interference light field, and the electrical signal of interference light field is acquired;Step S5, blade tip time ti is obtained according to electrical signal;And a kind of tip timing device based on laser Doppler effect, the blade tip time of the blade tip of the engine blade in the engine casing of engine is measured.The present application has the advantages of accurate measurement and high engineering applicability.

Multi-modal fiber probe devices and processes for fabricating the same are described. In one example, a multi-modal fiber probe device can include a flexible tapered fiber probe structure having a micro-scale tip region at a first end and a macro-scale connector region at a second end opposite the first end. The multi-modal fiber probe device can further include an optical waveguide positioned in and extending through the flexible tapered fiber probe structure from the micro-scale tip region to the macro-scale connector region. The multi-modal fiber probe device can further include a microfluidic channel formed in and extending through the flexible tapered fiber probe structure from the micro-scale tip region to the macro-scale connector region.

The invention relates to a gas-liquid two-phase flow gas volume fraction measurement method, which comprises the following steps of: acquiring local gas content signals at each position through an array optical fiber probe sensor, measuring by using a flow meter to obtain corresponding standard gas volume fractions, and constructing a sample data set; constructing a BP neural network, and optimizing the weight and threshold of the BP neural network by using a particle swarm optimization algorithm to obtain preset T weak predictors; and combining the T weak predictors according to the following formula to obtain a strong predictor which is used for obtaining a final gas volume fraction predicted value. The optical fiber probe sensor adopted by the invention can accurately detect gas-phase and liquid-phase media in gas-liquid two-phase flow, provides basic data for accurate measurement, optimizes the weight and the threshold value of the BP neural network through the particle swarm optimization algorithm, helps the network to jump out of local optimum, and improves the global search capability of the model, thereby improving the measurement precision, and reducing the measurement cost. According to the AdaBoost algorithm, a plurality of BP neural network weak predictors subjected to PSO optimization are combined into a strong predictor, so that the model prediction precision and stability are greatly improved.

This application relates to the field of data processing technology and discloses a method and system for automatically testing the thickness of a coating on the inner wall of a tube. The method includes: initializing measurement parameters and generating a point plan using a liquid crystal display controller; using a fiber optic probe to identify a reference marker to obtain zero-position data; measuring the inner wall of an empty tube based on the zero-position data to obtain a data set B1; repositioning and measuring the coated quartz tube to obtain a data set B2; using B1 and B2 to calculate the film thickness distribution and generate a characteristic diagram; and finally, performing a uniformity assessment and generating a test report. This application achieves automated, high-precision measurement of the coating thickness on the inner wall of a quartz tube, and systematically processes and analyzes the measurement data to accurately assess the uniformity of the coating.

The application discloses an integrating sphere for measuring absorption spectrum and a measuring method thereof, wherein the integrating sphere comprises a spherical shell, a sapphire carrier, a light source and a fiber probe; the spherical shell has an inner cavity; the sapphire carrier is arranged in the inner cavity and used for carrying an object to be detected; the light source is installed on the spherical shell and used for projecting light to the object to be detected; and the fiber probe is installed on the spherical shell and used for receiving light reflected directly or indirectly from the object to be detected. The integrating sphere for measuring absorption spectrum disclosed by the application has the advantages that the sapphire carrier is arranged to carry the object to be detected, the light source is arranged to project light to the object to be detected, and the fiber probe is arranged to receive light reflected from the object to be detected, so that the overall structure is simple, the opaque sample and irregular solid sample (such as a gemstone) can be quickly and simply measured in terms of ultraviolet-visible-near infrared absorption spectrum, the signal of detection is good, and the measurement accuracy is high.

The application provides a fluorescence microscopic endoscopy system and method capable of adjusting liquid inflow and concentration in real time, and belongs to the field of microscopic imaging. The system comprises an integrated image transmission fiber probe (integrated liquid inflow channel and image transmission fiber bundle), a double-channel electric infusion unit (stain pump and diluent pump), an optical path control module (switchable filter and wide spectrum light source), and an image feedback module. A high-sensitivity camera is used to collect fluorescence images, and a main control board dynamically adjusts the concentration (mixed stain and diluent ratio) and spraying amount of the stain based on image brightness / contrast features, thereby solving the problems of traditional split-type operation complexity, uncontrollable stain amount, and poor imaging quality. Advantages include: single insertion for spraying and imaging, shortening detection time; image feedback closed-loop control improves staining accuracy; and expandable multi-spectral imaging. The application is suitable for early cancer screening of the digestive tract and significantly improves lesion recognition rate.

A fibre-optic probe cap 210 for a fibre-optic probe 200 comprising at least one excitation fibre 220 for outputting illumination radiation and at least one collection fibre 230 for collecting radiatio

This invention discloses an application method and system for a Raman spectroscopy system based on ICCD and fiber optic gating, comprising: S1, a control unit switching the working state of a laser source to generate a laser that excites a Raman signal in the target tissue; S2, the laser reaching the part to be detected through a flexible fiber optic probe, and the control unit switching the working states of the gating unit and the ICCD detector to acquire the Raman spectral signal of the target tissue through the fiber optic probe; S3, the control unit outputting the acquired Raman spectral signal to a spectral analysis module, which processes the acquired Raman spectral signal based on a built-in deep learning model to analyze and evaluate the malignancy of the acquired tissue. This invention provides an application method and system for a Raman spectroscopy system based on ICCD and fiber optic gating, which, by combining ICCD and gating technology, enhances the Raman signal intensity, reduces fluorescence background, and thus improves detection sensitivity and efficiency.

The invention provides a light irradiation fiber probe capable of emitting light with high beam quality in a direction inclined with respect to the axial direction of an optical transmission cable. This light irradiation fiber probe (1) is mounted on a therapeutic medical device, and is provided with: an optical transmission cable (10) that transmits light emitted from a light source; and a light refraction part (20) which is provided on the front end part (13) side of the optical transmission cable (10), and which emits light inclined at a predetermined angle or more with respect to the axial direction (X) of the optical transmission cable (10) by refracting the laser light (L) emitted from the optical transmission cable (10) via two or more refraction surfaces (21).

A temperature sensor used in a molding machine includes: a tubular fiber probe into which an optical fiber is threaded; an outer casing having a shaft into which the fiber probe is inserted; a protective window that is located on a distal end side of the fiber probe and is formed of glass; and a spacer that is disposed between the fiber probe and the protective window and has a space section both sides of which are in contact with the fiber probe and the protective window. The space section has a transmission hole formed to serve as a path leading infrared light to the optical fiber, and a diameter of the transmission hole is equal to or greater than an outer diameter of the optical fiber.

The utility model provides a hydrogen peroxide production catalyst activity real-time monitoring and regulating device which comprises a hydrogenation tower, the outer side face of the hydrogenation tower is fixedly connected with a liquid conveying pipe, the liquid conveying pipe is communicated with an outer liquid distribution pipe in a regulating assembly, the inner side face of the outer liquid distribution pipe is fixedly connected with an inner liquid distribution pipe through a middle liquid distribution pipe, and the lower surface of the middle liquid distribution pipe is symmetrically connected with spray heads. The upper surface of the middle liquid distribution pipe is fixedly connected with an optical fiber probe, and the temperature measuring assemblies are symmetrically connected into the fixed bed layer and composed of an upper fixing plate, a lower fixing plate, an outer protective shell, a middle protective shell, an inner protective shell and a temperature sensor. Through cooperation of the regulation and control assembly, the temperature measurement assembly and the optical fiber probe, the device can correspondingly monitor a working solution and a fixed bed layer in the hydrogenation tower in real time, so that accurate data of the activity of a catalyst in the fixed bed layer can be obtained, the sensitivity of regulation and control of the activity of the catalyst can be improved, and the working efficiency is improved. The production efficiency of hydrogen peroxide is improved.