175 results about "Optical fiber probe" patented technology

The invention discloses a quick response capability detection device for a high-precision electromagnetic valve, and relates to the technical field of electromagnetic valve detection, the quick response capability detection device comprises a positioning frame and a transmission table, a sliding rod arranged on the positioning frame is sleeved with the transmission table in a sliding connection mode, and valve body positioning tools are fixed to the side wall of the transmission table at equal intervals through bolts; the miniature optical fiber sensing module and the high-frequency response pressure sensor are integrated, synchronous measurement of valve element displacement and outlet pressure is achieved, the limitation of single parameter measurement is overcome, meanwhile, the miniature optical fiber probe is adopted for detecting the valve element displacement through the miniature mounting hole in the valve body, the influence on valve element movement is reduced, and the measurement precision is improved. The problem that the structure of the electromagnetic valve needs to be greatly changed in a traditional direct detection method is avoided, the drift diameter of a flow channel is adjusted through rotation of a layer sleeve block in the phase change regulation and control mechanism in the initial detection stage, multi-working-condition simulation from low-pressure large flow to high-pressure small flow is achieved, and the detection condition is closer to the actual working environment of the electromagnetic valve.

The invention discloses an intelligent dynamic regulation and control method for compaction quality of a high-liquid-limit fly ash roadbed, which comprises the following steps of: establishing a mapping relation among high-spectral characteristics of high-liquid-limit fly ash, a specific surface area index, a total hydroxyl content and a water content through a first neural network model, and establishing an optimal water content prediction model through a second neural network model; the third to fifth neural network models construct the correlation of the compactness, the dielectric constant, the rigidity and the water content; two-stage water content regulation and control of a storage yard and a paving layer are realized through hyperspectral imaging of an optical fiber probe and an unmanned aerial vehicle, and pre-humidification and secondary precise regulation and control are performed in combination with an intelligent spraying system; in the compaction stage, data are collected in real time through a multi-frequency ground penetrating radar and a vibration sensor, compaction degree distribution is inverted, layered evaluation is conducted, and rolling parameters are dynamically adjusted. According to the invention, a hyperspectral technology, multi-source sensing and deep learning are fused, intelligent management of compaction quality is realized, and construction uniformity and quality stability of the fly ash roadbed are significantly improved.

The application provides a current measurement device based on diamond NV color centers, which comprises a microwave source circuit unit configured to output a microwave signal; a diamond NV color center optical fiber probe group unit comprising a plurality of optical fibers, the top end of each optical fiber being provided with a diamond NV color center, and the top end of the plurality of optical fibers having different distances from a wire to be measured; the diamond NV color center optical fiber probe group unit is configured to receive the microwave signal and feed back the microwave signal to the microwave source circuit unit, so that the microwave source circuit unit outputs a microwave signal with a desired frequency according to the feedback to match the energy level resonance frequency of the diamond NV color center under different magnetic field strengths; and a current measurement unit configured to measure the current according to the energy level resonance frequency of the diamond NV color center. According to the embodiment of the application, the magnetic field generated by a larger current wire can be detected by using a lower frequency microwave signal through simultaneous detection of a plurality of diamond NV color centers spaced apart from the wire to be measured by a specific distance.

The invention relates to the technical field of pressure sensing, and discloses a high temperature and pressure integrated measurement sensor, which comprises an optical fiber assembly and a diaphragm assembly which are fixedly connected with each other, the optical fiber assembly comprises an optical fiber base, and an optical fiber probe assembly is arranged in the optical fiber base; the diaphragm assembly comprises a diaphragm base welded to the optical fiber base, the bottom of the optical fiber probe assembly is located in the diaphragm base, a pressure sensing hole is formed in the bottom of the diaphragm base, sapphire glass and a pressure sensitive diaphragm are arranged above the pressure sensing hole, and the pressure sensitive diaphragm is connected with the bottom of the diaphragm base in a sealed mode. A vacuum cavity is arranged between the sapphire glass and the pressure sensitive diaphragm; compared with an existing pressure sensor based on the electrical principle, the sensor has the advantages of being high in high-temperature resistance, good in vibration resistance, small in assembling and debugging difficulty and capable of achieving temperature and pressure integrated measurement, and the problem that an existing sensor cannot be used in the extreme environments of high temperature, strong vibration and the like is solved.

The invention discloses a GIS internal partial discharge optical signal detection and positioning system and method. The system comprises a GIS internal discharge optical signal detection module, a GIS internal partial discharge optical signal simulation module and a GIS internal discharge optical signal positioning algorithm module. The discharge detection and positioning method provided by the invention comprises the following steps: firstly, arranging a plurality of fluorescent optical fiber probes in a cavity in a GIS (Gas Insulated Switchgear), and obtaining the intensity of optical signals received by different fluorescent optical fibers during discharge at different positions through a simulation method; secondly, performing relative intensity processing on the intensity of the received optical signal to obtain a relationship between the relative intensity of the optical signal received by the fluorescent optical fiber and a discharge position, and establishing a sample database; inputting the sample into a deep neural network for training to obtain a discharge position detection model; and finally, verifying the model through test data, thereby proving the reasonability of model discharge position prediction.

An automatic sample adding and detecting device for a biological chip relates to the technical field of biological chip detection and comprises a platform, a coordinate positioning mechanism, a supporting plate, a biological chip, a sealing plate, a detection hole, an automatic buffer solution feeder and a biological sample feeder, and the automatic buffer solution feeder and the biological sample feeder are identical in structure. Each feeder comprises a feeder body and a driving mechanism used for controlling the feeder body to quantitatively discharge liquid, a support is further fixedly arranged at the top end of the platform, an optical fiber probe is arranged on the support, and a shooting camera is arranged on the support on one side of the optical fiber probe. The liquid adding device does not need frequent sampling, can ensure that the liquid adding amount each time is consistent, avoids the tedious structure and operation of repeated sampling, promotes the detection result to be more accurate due to the uniform liquid adding amount, and is simple in structure, convenient to use, low in manufacturing cost, convenient to maintain and suitable for popularization and use.

The application discloses a high-temperature and high-pressure combustion chamber spectrum characteristic transmission device based on a special optical fiber probe head, which comprises an optical fiber probe head, a light guide optical fiber, a light emitting characteristic analysis device and a cooling liquid pump; the optical fiber probe head comprises high-transmittance optical glass, a metal cooling sleeve and an optical flange; the high-transmittance optical glass can transmit ultraviolet-visible light with a wavelength of 100-760 nm; the metal cooling sleeve comprises a cylindrical sleeve and a connecting cap; the cylindrical sleeve is coaxially arranged on the outer periphery of the high-transmittance optical glass and is sealingly arranged in a probe head mounting hole; the light guide optical fiber can collect the ultraviolet-visible light transmitted through the high-transmittance optical glass and is connected with the light emitting characteristic analysis device; and the cylindrical sleeve and the connecting cap are both provided with cooling channels connected with the cooling liquid pump. The application can analyze the chemical reaction light emitting characteristics in the high-temperature and high-pressure combustion chamber in real time, is especially suitable for monitoring the spontaneous radiation characteristics of OH*, CH* and C2* groups generated in the combustion process, and thus can determine the reaction region and the reaction heat release.

The utility model discloses a femtosecond pulse laser filament control system, which comprises a laser transmitter, a power meter, a target chamber, a beam collector, a vacuum pump, an optical fiber probe and an optical fiber spectrometer, a reflecting mirror I and a diaphragm are arranged between the laser transmitter and the power meter; a convex lens I is arranged between the reflecting mirror II and the target chamber; one side of the target chamber is provided with a light hole, the light hole is opposite to the optical fiber probe, a convex lens II is arranged between the light hole and the optical fiber probe, the optical fiber probe is connected with an optical fiber spectrometer through an optical fiber, and the optical fiber spectrometer is used for being connected with an upper computer; wherein the vacuum pump is communicated with the interior of the target chamber. According to the utility model, the size of the laser beam can be adjusted, the length of the laser filament can be controllably adjusted, and the influence of different environments on the spectral signal-to-noise ratio can be obtained, so that a stable and reliable basis is provided for a subsequent controllable LIBS (Laser-induced Breakdown Spectroscopy) experiment.

The invention discloses a temperature measuring device based on a fluorescent material, and the device comprises a housing which comprises an upper cover, a housing pedestal, an LED light source, a fluorescent material, an optical fiber probe, an optical fiber spectrometer, an optical fiber, a console, a display screen, a charging device, a charging hole, a charging line, and a data exchange interface. The temperature measurement method based on the fluorescent material comprises the steps of database input, fluorescent material excitation, light sample collection, light component analysis, light parameter transmission, temperature value calculation and temperature value feedback.

The present application belongs to the field of gas-liquid two-phase flow measurement and optical fiber sensing technology, and particularly relates to a liquid metal bubble detection sensor based on optical fiber reflection. A light signal is emitted from a laser light source, transmitted to an optical fiber probe module through a spatial light beam splitter or a fiber coupler, and reflected at the end face of the optical fiber probe module; the reflected light enters a photoelectric detector again through the spatial light beam splitter or the fiber coupler, is converted into an electric signal through a photoelectric conversion circuit, transmitted to a computer through a data acquisition card, and outputted after signal processing to obtain the void fraction and bubble frequency of the detected opaque liquid metal; the optical fiber sensor is based on the obvious difference in reflectivity at the interfaces between the opaque liquid metal, the bubbles and the optical fiber material, and the speed and distribution information of the bubbles are determined by analyzing the echo signal received by the photoelectric detector. The present application can stably and accurately complete bubble detection in a high-temperature liquid metal environment.

The invention discloses a tumor detection device and method based on a diamond quantum sensor, and belongs to the technical field of biomedical detection. The device comprises an optical fiber laser, an optical fiber beam splitter, an optical fiber attenuator, an optical fiber circulator, an optical filter, two photoelectric detectors, a differential amplifier, an electronic filter, a computer, a signal generator, two microwave antennas and an optical fiber probe. The optical fiber probe comprises an optical fiber packaged in a plastic shell, a diamond quantum sensor which is fixed at the tail end of the optical fiber and comprises an NV color center, and a first microwave antenna integrated beside the optical fiber. The laser excites the diamond to generate fluorescence, meanwhile, the signal generator drives the two microwave antennas to apply a microwave field, and the dielectric property of the sample to be detected modulates the fluorescence intensity of the diamond by influencing the microwave field. Laser noise is eliminated through a differential amplification and filtering technology, and fluorescence signal change is analyzed by a computer, so that dielectric constant distribution of a sample is reconstructed, and non-invasive and high-sensitivity detection of tumors is realized.

The utility model relates to an optical fiber probe for near-infrared brain function imaging detection. The optical fiber probe comprises a mounting base, a probe cap, a probe main body and a probe shaft cover, the mounting base is arranged on the detection helmet, and a mounting groove is formed in the mounting base. One end of the probe cap is connected with the fiber. The probe main body is arranged at the other end of the probe cap and penetrates through the mounting groove to be in contact with the head of a tester, and a limiting boss is fixedly sleeved on the probe main body. The probe shaft cover is movably sleeved between the limiting boss and the probe cap and is in threaded connection with the top of the mounting base, a limiting spring sleeved on the probe main body is arranged between the limiting boss and the probe shaft cover, and the probe shaft cover is matched with the mounting base to movably limit the probe main body. The probe main body is fixed in the mounting base and cannot be pulled out under the limiting of the limiting boss; and the limiting boss is matched with the limiting spring to move up and down or rotate the probe main body to adjust the position, so that the bent and knotted optical fiber is arranged or the signal of the optical fiber probe is adjusted.

The embodiment of the invention provides an optical fiber probe. The optical fiber probe comprises a probe main body and an optical path component, the probe main body is provided with a first incident light path and an emergent light path; the optical path component comprises a reflection assembly and a probe window assembly, the reflection assembly is provided with an incident area and an emergent area, the reflection assembly and the first incident light path are arranged in a spaced mode to form a spaced space, the probe window assembly comprises a first window piece and a second window piece, and the first window piece and the second window piece are spaced to form a liquid passing opening communicated with the outside. A first light path passing through the second window sheet, the liquid passing opening and the first window sheet is formed between the first incident light path and the incident area; the emergent area and the emergent light path are sealed and form a second light path, and the propagation directions of light in the first light path and the second light path are different. According to the optical fiber probe, the risk that bubbles stay at the liquid passing opening can be reduced, an optical signal is effectively prevented from penetrating through the bubbles to cause an abnormal spectral signal, and the measurement result is more accurate.

The application discloses an engine rotor multi-parameter measurement system and method, and the system comprises a first optical comb, a second optical comb, a polarization maintaining optical fiber amplifier, a polarization maintaining optical fiber beam splitter, an integrated polarization maintaining optical fiber ring, an integrated polarization maintaining optical fiber beam combiner, a plurality of high-temperature-resistant optical fiber probes, a high-speed photoelectric detector and a data acquisition and processing system; the pulse repetition frequency of the first optical comb is greater than that of the second optical comb, and the two have a high repetition frequency difference; the plurality of high-temperature-resistant optical fiber probes respectively generate reference light pulses and measurement light pulses; the scanning light pulses emitted by the second optical comb respectively interfere with the plurality of reference light pulses and the plurality of measurement light pulses to generate double-comb interference reference signals and double-comb interference measurement signals; through processing of the reference signals and the measurement signals of each channel, the engine rotor speed, the blade tip clearance, the blade tip timing and the blade vibration parameters are obtained. The application has the advantages of high measurement speed, high measurement accuracy and multi-parameter synchronous measurement.

This invention provides a full-link detection device and method for laser interferometric velocimetry systems, relating to the field of transient photoelectric testing technology. The detection device includes a pulse injection module, a signal transmission and conversion module, and a signal acquisition and analysis module. The pulse injection module includes a nanosecond pulse laser and a coupler. The coupler is connected in series between the output end of the fiber laser and the first port of the circulator. The nanosecond pulse laser, after being coupled by the coupler, is transmitted along the entire system link and converted into an electrical signal by a photodetector. The data acquisition unit acquires the signal, and the analysis unit analyzes the characteristics of the electrical signal to achieve full-link status detection. This invention can identify and locate fiber optic path breaks, determine the working status of the fiber optic probe, and predict the intensity of the interference signal in the formal experiment. Even after the system is fully solidified before the experiment, it can still monitor the entire link status in real time, effectively improving the operational reliability and efficiency of the laser interferometric velocimetry system.

The application discloses a urine small extracellular vesicle PLA2R1 membrane protein detection method for distinguishing membranous nephropathy, and belongs to the technical field of biomedical detection. The detection method comprises the following steps: preparing an anti-CD63 antibody surface fixed plasmonic metasurface sensing chip to directly capture small extracellular vesicles in urine; preparing an anti-PLA2R1 antibody modified biofunctionalized gold nanoparticle complex to specifically combine with the PLA2R1 membrane protein on the surface of the small extracellular vesicles; detecting the reflection spectrum of the chip after antibody fixation and gold nanoparticle combination through a spectrometer with an integrated optical fiber probe; calculating the resonance wavelength shift amount; measuring the expression level of the PLA2R1 membrane protein; and realizing accurate distinction of healthy people, membranous nephropathy gray area and confirmed patients. The non-invasive detection method is simple in operation and rapid in detection, the sensitivity and the specificity are improved by means of the gold nanoparticle signal amplification effect, and is suitable for large-scale clinical screening and early diagnosis.

The invention relates to a coaxial beam splitting optical fiber probe for spectrum detection and shape self-sensing, the optical fiber probe is formed by annularly distributing a plurality of functional optical fibers around an excitation optical fiber (3), the front end of the optical fiber probe is a conical probe tip (1), the middle section of the optical fiber probe is a bendable beam concentration section (2), and the functional optical fibers comprise a shape sensing optical fiber (4) and a spectrum receiving optical fiber (5). The optical fiber probe is simple and convenient in detection process and can be widely applied to real-time detection; the three-dimensional shape sensing function is integrated, the three-dimensional shape of the front half section of the probe can be obtained in real time, the shape self-sensing function is achieved, and target detection is more flexible and more accurate.

Aspects of the invention relate to fiber optic probes, in particular but not limited to multi-parameter fiber optic probes, and particularly but not limited to methods and devices for preparing and deploying multi-parameter fiber optic probes. The invention particularly relates to an oil well logging technology, in particular to a disposable multi-parameter measuring instrument for an oil and gas well based on an optical fiber sensing technology. Comprising a probe capable of releasing an optical fiber, a sealed penetrating assembly and an acquisition device. The probe adopts a plurality of independent optical fiber bobbins, and one optical fiber is wound on each independent optical fiber bobbin, so that synchronous sensing of multiple parameters such as temperature, acoustics and pressure is realized; a pre-twisting-free process is adopted for optical fiber winding, high-temperature-resistant adhesive is coated between layers, a stepped unwinding structure is formed, and stable unwinding is ensured. And the sealing penetrating assembly realizes high-pressure sealing transmission through a stepped threaded hole channel and a sealing agent doped with metal powder. The acquisition device is connected with the probe through an optical fiber and acquires and demodulates the sensing signal in real time. The device has the advantages of being rapid in deployment, low in cost, high in safety, degradable and the like, and is suitable for multi-parameter real-time monitoring of vertical wells, inclined wells and horizontal wells.

The invention provides a part R angle radius measuring device which comprises a semi-arc probe fixing piece erected on a horizontal plane and optical fiber probes, emergent light rays of all the optical fiber probes are coplanar and intersect at one point, emergent light rays of the central optical fiber probe are perpendicular to the horizontal plane, and emergent light rays of the central optical fiber probe are perpendicular to the horizontal plane. By calibrating the distance from each optical fiber probe to the convergent point and the interval angle between each optical fiber probe and the central optical fiber probe, the R angle radius of the to-be-measured part is solved according to the distance measurement value from each optical fiber probe to the to-be-measured part. According to the invention, the sensitivity coefficient of the calculation result of the R angle radius of the part to the measurement point error is reduced, the calculation accuracy of the R angle radius of the part is improved, and the stability of the optical fiber probe in the measurement process is improved through the integrated structure.

The invention discloses a high-precision non-contact micro-displacement measurement system based on photoelectric conversion and a use method, realizes high-precision non-contact displacement detection by detecting the change of reflected light intensity on the surface of a measured object, and belongs to the technical field of instrument measurement. According to the system, the reflection type optical fiber displacement sensing technology is adopted, the optical fiber probe is used for receiving light intensity changes of reflected light on the surface of a measured object, weak light signals are converted into measurable voltage signals in combination with the trans-impedance amplifier circuit, the measurement precision of 10 micrometers is achieved within the range of 0-2 mm, and linear response is good. The photoelectric conversion high-precision non-contact micro displacement measuring instrument has the advantages of high precision, simple structure, low cost, strong environmental adaptability and no mechanical damage, and breaks through triangular bottlenecks of precision, cost and environmental adaptability in the field of micro measurement at present. The method has a huge application prospect in the field of precision measurement related to scientific research, industrial scenes and the like.

The application provides a battery pack monitoring and early warning method and system based on an optical fiber embedded intelligent busbar. The application takes a battery pack busbar as a structural carrier of a sensor, preopens a containing channel in a busbar matrix, realizes fine sensing and early warning of a battery pack state, arranges distributed sensing optical fibers horizontally along the containing channel of the busbar, and extends a vertical optical fiber probe at each electrode lug connection. The probe is close to the electrode surface, and the detection point covers at least the upper part of the electrode and the lower part of the electrode. If the upper part of the electrode is preferentially heated, it is determined that the contact resistance of the busbar connection is abnormal. If the lower part of the electrode is preferentially heated, it is determined that the internal thermal runaway of the battery cell is budding. The application realizes decoupling diagnosis of busbar connection abnormalities and battery internal faults by arranging the vertical dimension optical fiber probe at the battery electrode.

The application discloses a Raman deep penetration imaging system based on a safe laser irradiation dose, which comprises a light source, a light spot amplifier, a sample table, a Raman optical fiber probe, a data processing module and a surface enhanced Raman spectrum probe contrast agent, the Raman optical fiber probe and the light spot amplifier are located on the two sides of the sample table, the Raman optical fiber probe is located on the side of the sample to be measured, the Raman optical fiber probe vertically faces the sample table, the Raman optical fiber probe is electrically connected with the data processing module, the outlet of the light source faces the light spot amplifier, the light spot amplifier is configured to expand the light spot emitted by the light source, the light spot output by the light spot amplifier vertically faces the sample table, and the surface enhanced Raman spectrum probe contrast agent comprises a surface enhanced Raman probe. Through the combination of the surface enhanced Raman spectrum probe contrast agent and the transmission type Raman detection device, accurate positioning and stable imaging of a tumor site are realized.

The invention belongs to the technical field of data processing and analysis, and particularly relates to an alpine region road subgrade moisture phase change distribution detection device and method. Comprising a cold-resistant shell, a ground coupling transceiving antenna, a sweep-frequency vector transceiver, an electric linear sliding table, an incremental displacement encoder, a temperature-sensitive optical fiber probe and an industrial computing terminal, the ground coupling transceiving antenna is fixed on the wave-transparent bottom surface of the cold-resistant shell and is electrically connected with the sweep-frequency vector transceiver, the cold-resistant shell is mounted on the electric linear sliding table, the incremental displacement encoder and the electric linear sliding table are coaxially mounted, and the temperature-sensitive optical fiber probe is used for providing environment temperature; and the industrial computing terminal is electrically connected with other parts and executes an acquisition process and a processing process. The device has the advantages of simple structure, continuous measurement range, strong anti-interference capability, high low-temperature environment adaptability and the like, can realize high-precision detection of roadbed freeze-thaw distribution, and provides reliable real-time data support for road maintenance, freeze injury early warning and cold region engineering design.

The invention discloses a transformer cooling fin operation state evaluation device and method, a program and a medium, and relates to the technical field of transformer operation state monitoring, the device comprises a simulation test bin used for installing a transformer, and parts below a sleeve of the transformer are all in the simulation test bin; an environment temperature regulator and a temperature optical fiber probe are mounted on the inner wall of the simulation test bin, the environment temperature regulator and the temperature optical fiber probe are respectively connected with a temperature data receiving instrument and temperature intelligent control equipment, the temperature data receiving instrument and the temperature intelligent control equipment are connected with an upper computer, and the temperature data receiving instrument is connected with an infrared temperature measuring device. According to the evaluation method, the device is used for evaluation. According to the evaluation device and the evaluation method, the nonlinear influence of factors in a severe high-temperature environment and an extremely severe high-temperature environment is fully considered, the operation state of the transformer cooling fin can be detected in the severe high-temperature environment and the extremely severe high-temperature environment, the device is simple in structure, and the measurement result is accurate.

The aero-engine aluminum pipeline shape correcting device comprises a main machine cabinet, a flexible guide pipe, a shape memory alloy supporting ring and a thin film pressure sensor, the supporting ring is arranged in an inner cavity of a to-be-repaired pipeline, and the thin film pressure sensor is connected to the outer ring face of the supporting ring in a sleeving mode; a gap is reserved between the film pressure sensor and the inner ring surface of the pipeline to be repaired; a resistance heating piece of an annular structure is installed or nested on the inner ring face of the supporting ring, a side-looking endoscope optical fiber probe is installed on the side face, away from an inlet of a pipeline to be repaired, of the supporting ring, one end of the flexible guide pipe is in contact connection with one end face of the supporting ring, and the other end of the flexible guide pipe is connected with a wiring shell of a host cabinet. Through real-time pressure monitoring and temperature regulation and control during shape correction, over-correction or under-correction is prevented, and the method is suitable for shape correction of small-diameter pipelines of aero-engines.

The application provides an optical fiber brain-computer interface array system based on an MPO linking technology.The system is characterized in that it is composed of a transmitting assembly formed by transmitting light sources 1-1 and 1-2, a single-mode optical fiber wavelength division multiplexer 2 and an optical fiber beam splitter 3, an MPO optical fiber jumper 4, an MPO optical fiber probe 5, an optical fiber combiner 6 and a single photon detector (SPAD) 7.The application can be used to acquire diffuse reflection light information of blood oxygen changes in brain tissues, to monitor a cognitive activity of the brain in real time, to acquire brain activity signals related to brain functions, and can be widely used in the fields of new non-invasive optical brain-computer interface monitoring equipment and the like.

The invention relates to a surface plasmon resonance (SPR) optical fiber probe, further relates to application of the SPR optical fiber probe in detection of type II ribosome inactivating protein (such as ricin and abrus precatorius toxin), further relates to a kit and a detection system comprising the SPR optical fiber probe, and further relates to a method for detecting the type II ribosome inactivating protein by using the SPR optical fiber probe. The metal nanoparticle layer on the surface of the SPR optical fiber probe is not easy to fall off, has good stability, can be repeatedly used, and can improve the detection stability.

A water quality heavy metal detection equipment based on an SPR sensor includes a heavy metal detection end and a data analysis end, the data analysis end is connected with the heavy metal detection end; the heavy metal detection end includes a shooting assembly, a light supply assembly, a slide and a sulfide montmorillonite modified optical fiber, the shooting assembly is connected with a first optical fiber probe, the light supply assembly is connected with a second optical fiber probe, one end of the optical fiber is connected with the first optical fiber probe, the other end of the optical fiber is connected with the second optical fiber probe; the optical fiber includes a third optical fiber section with deposited coating material, the third optical fiber section is fixed on the slide, the surface of the third optical fiber section is coated with a gold film and sulfide montmorillonite, and the sulfide montmorillonite is located outside the gold film. A water quality heavy metal detection method based on an SPR sensor uses the above equipment. The present application can overcome the difficulty that the refractive index of low concentration heavy metal water sample is small compared with pure water, realize the detection of trace heavy metal water sample, and belongs to the field of water quality heavy metal detection.

The invention discloses a multi-element blended polymer low-fidelity spectral data high-throughput acquisition method and device, and the method is realized based on the multi-element blended polymer low-fidelity spectral data high-throughput acquisition device. Comprising the following steps: respectively fixing to-be-detected samples of different materials or different proportions on a plurality of sectors on the surface of the same turntable, wherein one sample is placed in each sector; determining the relationship between the angular velocity of the turntable and the integration time, so that the turntable completes n circles of rotation within the single integration time of the spectrum, and collecting spectral signals of samples in all sectors through a near-infrared optical fiber probe and a Raman optical fiber probe, n being a positive integer; according to the spectral signal and the corresponding sample information, obtaining a low-fidelity multi-mode spectral data set with a label; and preprocessing the spectral signals in the low-fidelity multi-mode spectral data set. According to the method, the spectral data of the blends with different component contents can be quickly obtained, the data acquisition efficiency is remarkably improved, and the data acquisition cost is reduced.

The application provides an optical fiber probe and a manufacturing method thereof. The manufacturing method comprises the following steps: inserting an optical fiber into a tubular shell; inserting a glue injection head of a glue injection machine into the tubular shell from the end of the tubular shell and injecting optical glue; stopping the glue injection after the optical glue fills the space formed by the preset interval, and moving the inserted end to be in contact with the glue injection head; inserting a sapphire column into the end of the tubular shell; and performing low-temperature curing on the part of the tubular shell with the optical glue, so as to finally form the optical fiber probe. The optical fiber probe comprises an optical fiber, a tubular shell, optical glue and a sapphire column. The optical fiber and the sapphire column are both located in the tubular shell, and the sapphire column is located at the end of the tubular shell and in contact with the inserted end of the optical fiber. The optical fiber, the tubular shell and the sapphire column are fixed by the optical glue, and the optical fiber probe is not operated in a vacuum environment, so that the manufacturing cost of the optical fiber probe is reduced, and the manufacturing speed is faster and the efficiency is improved.