340 results about "Optical fiber probe" patented technology

The invention discloses a water quality heavy metal pollution detection method and system based on Raman spectrum.The water quality heavy metal pollution detection method comprises the steps that water body Raman scattering light is collected in situ through a miniature optical fiber probe, and a continuous time sequence spectrum signal flow is generated; wavelet transform is combined with self-adaptive threshold setting, and high-frequency noise and effective spectral signals are separated; dynamically strengthening the characteristic peak of the target heavy metal through a frequency domain characteristic screening module, and inhibiting a water molecule interference peak at the same time; generating a cross-domain fusion feature vector; processing the fusion feature vector through a pre-trained heavy metal concentration prediction model, and outputting concentration prediction values of various heavy metals; a confidence score is dynamically calculated based on a deviation between a current predicted value and historical data distribution, and model parameter update and system calibration are automatically triggered. The method has the advantages that through acousto-optic signal cross-domain fusion and closed-loop self-calibration, the target peak is dynamically strengthened while water molecule interference is inhibited, and the real-time performance, the anti-interference performance and the prediction precision of heavy metal detection are improved.

The invention provides a micro-nano optical fiber probe for biochemical component detection based on infrared spectroscopy and detection equipment, and a preparation method of the micro-nano optical fiber probe comprises the following steps: S1, selecting one section of a multimode quartz optical fiber as a sensing area, and then removing a cladding layer and a coating layer of the sensing area to expose a bare fiber; s2, dripping a mixed acid solution prepared from hydrofluoric acid and citric acid to the bare fiber to corrode the bare fiber, and then cleaning and blow-drying; immersing the treated multimode quartz optical fiber into a silane coupling agent solution, reacting for 0.5-1 hour, and then drying; s3, immersing the multimode quartz optical fiber treated in the step S2 into a solution containing silver nanoparticles, and reacting for 10-20 minutes to obtain an optical fiber modified by the silver nanoparticles; and S4, sputtering a gold layer on the surface of the silver-modified optical fiber by adopting a vacuum magnetron sputtering technology to obtain the micro-nano optical fiber probe with the silver-gold film layer. After the surface of the silver nanostructure is covered with the gold film, oxygen, water, corrosive molecules and the like are effectively prevented from making direct contact with silver. In addition, both the gold and the silver can support a surface plasmon resonance (SPR) effect, and particularly, the prepared detection equipment can ensure the sensitivity of the SPR.

The invention discloses a Raman spectrum-based online detection method for glucose and ethanol in a yeast fermentation process. The Raman spectrum-based online detection method specifically comprises the following steps: preparing a yeast seed solution, and inoculating the yeast seed solution into a fermentation tank for fermentation; in the fermentation process, an immersion type Raman optical fiber probe is used for collecting a Raman spectrum in real time, and meanwhile sampling is conducted at regular time to measure the concentration of glucose and ethanol; sequentially carrying out median filtering, adaptive iteration reweighted penalty least square method (airPLS) baseline correction, Savitz-golay (SG) smoothing processing and characteristic peak normalization on the acquired spectrum; respectively establishing concentration prediction models of glucose and ethanol by adopting a PLS1 algorithm; and applying the model to a subsequent batch fermentation process to realize online prediction of glucose and ethanol. According to the method, manual sampling is not needed, prediction is accurate, operation is easy and convenient, and in-situ online detection of glucose and ethyl alcohol in the yeast fermentation engineering can be achieved.

The invention discloses a rotor and stator axial clearance online measuring device and method based on optical carrier microwave interference. The measuring device comprises a broadband light source, a first polarization maintaining optical fiber, an electro-optical modulator, a second polarization maintaining optical fiber, an optical fiber circulator, a first single-mode optical fiber and a coated optical fiber probe which are connected in sequence, and the coated optical fiber probe directly faces the axial end face to be measured; a first port of the optical fiber circulator is connected with the second polarization maintaining optical fiber, a second port of the optical fiber circulator is connected with the first single-mode optical fiber, and a third port of the optical fiber circulator is sequentially connected with the second single-mode optical fiber, the photoelectric detector, the signal conditioning unit, the signal acquisition unit and the digital processing unit; the signal acquisition unit is connected with the micro-control unit, the micro-control unit is connected with the microwave frequency sweep signal generation unit, and the microwave frequency sweep signal generation unit is connected with the electro-optical modulator. According to the invention, non-contact on-line high-precision measurement of the axial clearance of the rotor and the stator of the aero-engine under the conditions of limited measurement space and complex signal leading-out path can be realized.

The invention discloses a high-resolution local brain blood oxygen change measuring method based on self-detection-mutual detection combination, which comprises the following steps: placing two optical fiber probes of an optical fiber brain blood oxygen detection system on the brain scalp, and dividing two self-detection channels and one mutual detection channel according to different light diffusion paths; calculating a time-dependent average partial path length; a laser diode is driven to emit near-infrared pulse light, and two groups of time-resolved reflectivity signals of the three channels are obtained; performing curve optimization on the time-resolved reflectivity signals of the channels 1, 2 and 3 measured twice, and solving an absorption change equation set; solving absorption change values of the linear equations of the channels 1, 2 and 3; obtaining a relational expression between the change of the absorption coefficient of the local areas with different wavelengths and the blood oxygen concentration; and solving the relational expression group of the same wavelength and the local region to obtain the blood oxygen concentration change of the local region. The method has the advantage of improving the spatial resolution of the time domain fNIRS and the signal-to-noise ratio of the time gate signal of the time resolution reflectivity.

The invention discloses an optical fiber probe imaging catheter module for an intravascular frequency domain OCT (optical coherence tomography) imaging system, which comprises a transparent protective sleeve and a lining tube arranged in the transparent protective sleeve, a transparent window is arranged at the front end of the transparent protective sleeve, and a single-mode optical fiber, a coreless optical fiber, a GRIN (gradient refractive index) lens and a reflector are sequentially arranged in the lining tube. And a torsion spring tube is arranged outside the single-mode optical fiber. The design of the optical fiber probe and the double-layer catheter is optimized, the imaging resolution is improved, the adaptability of the probe and tissue is enhanced, the optical signal transmission efficiency is improved, high-resolution and low-friction intravascular imaging is provided, and the OCT image quality and reliability are improved.

A fiber optic probe is provided with a distal sampling end, a proximal end, and light delivery and collection paths therethrough. The probe includes a window disposed at the distal sampling end of the fiber optic probe, the window having a distal end and a proximal end, the window having a light blocking material that reduces a surface area that receives light rays. A lens is disposed near the proximal end of the window, the lens having a distal end, a proximal end, and an aperture. A light delivery optical fiber is provided having a distal end and a proximal end, the light rays being directed through the aperture. A collection optical fiber is provided in optical communication with the lens and the window. The probe may include a lens collection filter disposed between the window and the lens.

The invention provides a light source control method and system based on data analysis, and the method comprises the steps: carrying out the multi-channel spectral characteristic collection of an LED light source through a spectrum analyzer array and an optical fiber probe, obtaining a spectral response curve and an interference image, carrying out the multi-scale analysis processing, and generating a multi-dimensional data tensor; performing interference mode and defect signal decoupling analysis on the multi-dimensional data tensor to obtain an interference mode feature and an interference-defect discrimination result; performing spatial distribution analysis on the interference sensitivity of the wafer surface by adopting preset kernel density estimation and a graph neural network according to the interference mode characteristics and the interference-defect judgment result, and generating an interference sensitivity distribution matrix; according to the interference sensitivity distribution matrix, the current waveform and light beam phase distribution of the LED light source are accurately modulated, intelligent control over the LED light source is achieved, the influence of multi-mode interference on semiconductor detection is effectively eliminated, and the accuracy of nanoscale defect detection is improved.

The invention provides a coaxial collection laser-induced breakdown spectroscopy device. The coaxial collection laser-induced breakdown spectroscopy device comprises a computer, a laser, a 9-to-1 spectroscope, a photoelectric external trigger unit, a reflector, a dichroscope, a galvanometer group, a field lens, a double-focusing lens group, a spectrograph optical fiber probe and a spectrograph, a laser beam passes through the 9-to-1 spectroscope and the reflector, is deflected, then enters the dichroscope, penetrates through the dichroscope, enters the galvanometer group, is reflected by the X reflector and the Y reflector for multiple times and then enters the field lens, and parallel light is focused to a test sample. A laser induced plasma emission spectrum generated in the laser cleaning process serves as a point light source and is converted into parallel light through a field lens, and then the parallel light enters a dichroscope through an original path of a galvanometer set, deflects to enter a double-focusing lens set and is stably focused to a spectrograph optical fiber probe to be processed and analyzed by the spectrograph. The coaxial collection light path is applied to the galvanometer laser head, plasma emission light can be directly collected in the laser cleaning process, and more efficient signal collection and processing are achieved.

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 invention discloses a high-precision electronic tooth colorimeter. The high-precision electronic tooth colorimeter comprises a standard light source, an optical fiber probe, a color sensor, an intelligent programmable chip and a liquid crystal display screen, a standard light source and optical fiber color picking technology is adopted, the stability and consistency of the light source are ensured, and ambient light interference is avoided. The color sensor collects RGB original data of tooth reflected light and converts the RGB original data into data of an HSL color space, and the intelligent programmable chip automatically matches the closest color number through an Euclidean distance algorithm of the HSL color space. The system supports an intraoral mode and an extraoral mode, adapts to different colorimetric requirements, supports input functions of different tooth color plate systems, and is more flexible to use. The colorimetric precision and efficiency can be remarkably improved, the rework rate is reduced, the cost is saved, and the satisfaction degree of a patient is improved.

The invention discloses a Raman spectrum system application method and system based on ICCD (Intensified Charge Coupled Device) and optical fiber gating, and the method comprises the following steps: S1, a control unit switches the working state of a laser light source to generate laser for exciting a Raman signal of a target tissue; s2, the laser reaches a to-be-detected part through a flexible optical fiber probe, and a control unit switches the working states of a gating unit and an ICCD detector so as to collect a Raman spectrum signal of the target tissue through the optical fiber probe; s3, the control unit outputs the collected Raman spectrum signals to a spectral analysis module, and the spectral analysis module processes the collected Raman spectrum signals based on a built-in deep learning model so as to analyze and evaluate the malignancy degree of the collected tissue. The invention provides a Raman spectrum system application method and system based on ICCD (Intensified Charge Coupled Device) and optical fiber type gating, by combining ICCD and gating technologies, the Raman signal intensity is improved, the fluorescence background is reduced, and the detection sensitivity and efficiency are further 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 belongs to the technical field of agricultural product detection, and discloses a rapid detection device and method for the sugar degree of prunes, and the rapid detection device for the sugar degree of the prunes comprises a sugar degree instrument shell, a power supply unit, a sugar degree detection unit, a sugar degree instrument control unit, a sugar degree display unit and an optical fiber probe. The signal sending module, the signal receiving module and the power supply unit are electrically connected with the information processing module, and the optical fiber probe is connected with the signal sending and receiving module through an optical fiber. The detection method comprises the following steps: sending an optical signal to the prune by using the light source, collecting reflected light spectrum information by using the micro spectrometer, transmitting the reflected light spectrum information to the Raspberry Pi to construct a two-dimensional spectrum characteristic matrix, and inputting a prune regression model based on a least square support vector machine regression model to obtain a sugar degree detection result. According to the technical scheme provided by the invention, rapid sugar degree detection can be carried out on prunes with different sugar degrees.

The invention relates to the technical field of data processing, and discloses an automatic testing method and system for the thickness of a coating layer on the inner wall of a pipe. The method comprises the steps that measurement parameters are initialized through a liquid crystal display controller, and a point location scheme is generated; identifying the reference mark point by the optical fiber probe to obtain zero data; measuring the inner wall of the hollow pipe based on zero data to obtain a data set B1; repositioning and measuring the coated quartz tube to obtain a data set B2; calculating film thickness distribution by using B1 and B2 and generating a feature map; and finally, performing uniformity evaluation and generating a test report. According to the invention, automatic and high-precision measurement of the thickness of the coating layer on the inner wall of the quartz tube is realized, systematic processing and analysis are carried out on the measured data, and the uniformity of the coating is accurately evaluated.

The invention discloses an experimental device for simulating the influence of an underground environment on a coal rock near infrared spectrum, and belongs to the technical field of underground environment simulation experiments. The device comprises a simulation box, an objective table, a near-infrared spectrometer, an optical fiber probe, a linear moving mechanism, a stepless speed regulation air pump and a temperature control mechanism, the objective table is located in the simulation box, one end of the optical fiber probe is connected with the near-infrared spectrometer, and the other end of the optical fiber probe is inserted into the simulation box from the top of the simulation box and connected with the wall face of the simulation box in a sealed mode; the linear moving mechanism is used for pushing the objective table to linearly move along the horizontal plane; the stepless speed regulation air pump is used for driving air in the simulation box to circularly flow; the temperature control mechanism is used for controlling the temperature in the simulation box. The device can simulate various underground environment factors, and can be used for analyzing the influence of the underground environment on the near infrared spectrum data of the coal rock sample, so that the near infrared spectrum data of the coal rock sample is corrected, and the coal rock interface can be identified more accurately.

The invention provides an MXene (at) rGO optical fiber probe as well as a preparation method and application thereof. According to the invention, the advantages of MXene and rGO are combined, and the MXene (at) rGO heterostructure material is synthesized on the surface of the optical fiber sensing probe. The sensitivity of the prepared MXene (at) rGO optical fiber probe reaches 4312.72 nm / RIU, and is improved by 99.92% compared with the sensitivity 2157.23 nm / RIU of the MXene (at) rGO optical fiber probe which is only sprayed with a gold film, and is far higher than the sensitivity improvement value of MXene to a sensor; the problem that the sensitivity of the sensor is reduced due to rGO is solved, and the effect of greatly improving the sensitivity of the optical fiber probe through combined utilization of Mxene and rGO materials is achieved. According to the MXene (at) rGO optical fiber probe prepared by the invention, the sensitivity of the optical fiber is greatly improved, and a high-sensitivity sensing material and an improvement thought are provided for further development of an optical fiber sensor.

The invention discloses a time-resolved LIBS (laser-induced breakdown spectroscopy) system and a sample component analysis method and product thereof, and relates to the field of laser-induced breakdown spectroscopy. After the sample is irradiated by the ablation laser, plasma is generated; in the plasma expansion and cooling process, excited state atoms and ions are subjected to energy level transition, and a characteristic radiation spectrum is released; the delay control module sets different delay time so as to control the working time interval of the laser generator and the spectrograph; the spectrograph receives the characteristic radiation spectrums at different delay times by using an optical fiber probe, stimulates the characteristic radiation spectrums at the integration time, and determines characteristic radiation spectral lines of different elements; and the computer analyzes the characteristic radiation spectral lines, determines spectral line intensities of different elements, and determines a component result of the sample in combination with the calibrated spectral line intensities and the element content function curve so as to improve the accuracy of the component result of the sample.

The invention discloses a circuit breaker plum blossom contact contact stroke intelligent detection method and system, and the method comprises the steps: a configuration step: a static contact is configured with an optical fiber sensing array, an image collection module and a light supplement module, the optical fiber sensing array comprises an optical fiber sensor, the optical fiber sensor comprises an optical fiber probe, and a matched optical fiber cable and an optical fiber amplifier, the image acquisition module comprises an industrial camera; a dynamic detection step: comprehensively scheduling an optical fiber sensor and an industrial camera, and collecting displacement data of a contact piece of the moving contact and connection state data of the closed moving contact and static contact in real time; a data processing step: fusing the displacement data of the optical fiber sensor and the image data of the industrial camera, evaluating the contact state and surface defects of the static contact and the moving contact, embedding a lightweight AI reasoning chip to carry out localization real-time processing, and adopting a contact wear compensation algorithm to carry out real-time processing on the basis of the contact closing times and historical wear data. Dynamically adjusting the detection threshold value of the optical fiber probe and the parameters of the contact state evaluation model.

The invention belongs to the technical field of optical fiber probe processing, and discloses an optical fiber probe processing platform and processing equipment. The machining platform comprises a positioning plate, a first straightening piece, a second straightening piece and a connecting block. The first straightening piece is fixed on the positioning plate and is provided with a first positioning hole through which an optical fiber passes; the second straightening piece is fixed on the positioning plate, the second straightening piece and the first straightening piece are arranged at an interval, the second straightening piece is provided with a second positioning hole through which a bare fiber in the optical fiber penetrates, and the second positioning hole is coaxial with the first positioning hole; a positioning part is arranged at one end of the connecting block, the positioning part can be connected with the rotating motor, a fixing hole penetrates through the connecting block, the fixing hole is coaxial with the first positioning hole, the optical fiber can penetrate through the fixing hole and sequentially pass through the first positioning hole and the second positioning hole, and the optical fiber can be fixed in the fixing hole; the machining equipment comprises an adjusting platform and the machining platform. According to the invention, the high coaxiality requirement of optical fiber probe processing can be maintained, and the processing yield and the adaptability of processing equipment are improved.

The present invention relates to the technical field of detecting trace elements in fruits, and particularly relates to a device and a method for measuring the vitamin C content of kiwifruit. The measuring device includes a detection box and a rotary motor, and the output shaft of the rotary motor is fixedly connected to a first pressing block; a thrust device is arranged in the detection box, and a second pressing block is rotatably installed on a sliding plate; a plurality of optical fiber probes are arranged on the detection box; a box body is arranged on the detection box, the box body includes a first brush plate and a second brush plate, a brush sleeve is arranged on the first brush plate, brush filaments are arranged on the second brush plate, brush holes are formed in the side wall of the brush sleeve, a contact end for contacting the surface of the kiwifruit is arranged on the brush sleeve, the brush filaments include a brush rod and a brush filament body, and the brush filament body is used for brushing off the fluff on the kiwifruit; the distance between the first brush plate and the second brush plate is adjustable. In this application, for kiwifruits with different surface colors, different thicknesses of fluff are retained on their surfaces to reduce the influence of the surface color and luster differences of kiwifruits on the detection results and improve the accuracy of detection.

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 construction method of a high-resolution brain blood oxygen dynamic response 3D atlas, which comprises the following steps: selecting a rectangular network or a honeycomb network to detect a plurality of brain regions, and arranging a plurality of optical fiber probes; dividing an area below the basic unit into a plurality of local areas, and calculating the path length of the time resolution part; a signal inspection strategy is executed under the wavelength 1 and the wavelength 2, and two-wavelength first-measurement diffused light signals are obtained; obtaining a wavelength 1 re-measured diffused light signal at intervals; executing an element signal conjoint analysis strategy on the basic unit to obtain a wavelength 1 local region absorption coefficient change; a remeasured diffused light signal with the wavelength 2 is obtained; executing an element signal conjoint analysis strategy on the basic unit to obtain a wavelength 2 local region absorption coefficient change; solving an equation set of the same wavelength and the local area to obtain blood oxygen change of the local area; the brain blood oxygen dynamic response 3D atlas is obtained. According to the method, the spatial resolution of the brain blood oxygen dynamics response 3D spectrum is improved, and technical reserve is provided for the 3D brain depth information full spectrum.

The invention discloses a BNCT target disc temperature detection system and method. The method comprises the steps that a magneto-optical film with the thickness of 20 + / -1 nm grows on the back surface of a rotating lithium target through magnetron sputtering; a dual-wavelength laser interference light source is introduced into a vacuum target chamber through a coaxial optical fiber probe to form a dual-cavity interference link; the magneto-optical film generates nanoscale displacement by using centrifugal force generated when the rotary lithium target rotates, so that the instantaneous temperature rise of the rotary lithium target is amplified into a phase polarization composite signal capable of being optically detected; the integrated micro slip ring coupling optical path is used for coupling the phase polarization composite signal to a static end photoelectric detector; a phase polarization composite signal output by the photoelectric detector is input into the field programmable gate array, and the transient micro-area temperature field of the rotating lithium target is solved in real time; and the generated transient micro-area temperature field is used as a boundary condition for driving, so that closed-loop verification and temperature control protection of the rotating lithium target are realized. According to the invention, millisecond-level temperature control protection of the ultrathin rotary lithium target can be realized.

The invention discloses a solution-interface measuring device based on a nano-slit confinement effect, a preparation method and a measuring method, the measuring device comprises a sample preparation layer, the sample preparation layer comprises a silicon substrate, the silicon substrate is provided with two electrodes which are arranged in parallel at an interval based on an MEMS technology, and the upper surfaces of the electrodes are provided with mercaptan self-assembly modification layers; a nano groove is formed between the two electrodes, an inlet of the nano groove is provided with an inclined lead-in surface, and a hydrophilic layer is formed on the surface of the inclined lead-in surface; the online monitoring layer comprises a temperature control module, and thermistor dot matrixes of the temperature control module are arranged at the bottom of the silicon substrate; the optical fiber surface plasma resonance sensor is arranged on the upper surface of the electrode; the pH optical fiber probe is arranged on the side wall of the nano groove; and the signal processing layer comprises an electrochemical impedance spectroscopy circuit board arranged at the bottom of the online monitoring layer. The measuring device can solve the problems that a traditional measuring device is complex in structure, prone to blockage, weak in interface signal and uneven in solution introduction.

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.

The utility model discloses an LIBS (Laser-induced Breakdown Spectroscopy) orthogonal pulse space-time characteristic measuring device which comprises a laser device, a light path adjusting device, a spectroscope, a lens I, a lens II and a scattered spectrum collecting device, and laser emitted by the laser device is divided into a laser beam I and a laser beam II after passing through the spectroscope; the laser beam I is focused through the light path adjusting device and the lens I and then bombards a target material to generate plasma cloud, the laser beam II is bombarded on the plasma cloud after passing through the lens II, the scattered spectrum collecting device comprises a lens III, a plane moving device, an ICCD device and a computer, and the lens III collects scattered light generated by the plasma cloud. The output end of the ICCD device is connected with the input end of a computer, the input end of the ICCD device is connected with an optical fiber probe through an optical fiber, the optical fiber probe is fixed to a plane moving device, and the moving plane of the optical fiber probe is perpendicular to the optical axis of scattered light generated by the plasma cloud after the scattered light penetrates through a lens III. A focusing focus on one side, far away from the plasma cloud, of the lens III is positioned on a moving plane of the optical fiber probe.

The present invention discloses a device for measuring the steady-state deformation of rotating blades inside a casing, comprising a data acquisition and processing system, an optical fiber array, and an optical fiber probe group. The optical fiber probe group includes at least two optical fiber probes, which are mounted on the casing along the chord direction. The axial position of each optical fiber probe relative to the rotating shaft is different. The optical fiber array has optical fibers that match the number of optical fiber probes. The optical fiber probes are connected to the data acquisition and processing system via the optical fibers of the optical fiber array. The data acquisition and processing system collects and processes the data collected by the optical fiber probe group. The data acquisition and processing system is configured to calculate the steady-state deformation of the blades. The present invention also discloses a method for measuring the steady-state deformation of rotating blades inside a casing. The present invention can simultaneously obtain three parameters: circumferential translation, axial translation, and anti-torsion angle, with high calculation accuracy.

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.