491 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 photo-thermal amplification and real-time PCR (polymerase chain reaction) detection integrated optical fiber system, and relates to the field of pathogen testing, the optical fiber system comprises an optical fiber probe, a photo-thermal photosensitizer and a micro reaction chamber; the micro-reaction chamber is used for extracting and discharging a to-be-detected sample by utilizing air pressure, the optical fiber probe is arranged in the micro-reaction chamber, and the optical fiber probe reacts with the to-be-detected sample in the micro-reaction chamber; the photo-thermal photosensitizer is arranged inside or on the outer surface of the optical fiber probe and is used for receiving heat generated by the heating light to heat the optical fiber probe and controlling the reaction temperature of the optical fiber probe and the to-be-detected sample; the optical fiber probe is also used for receiving the exciting light which excites the to-be-detected sample to generate a fluorescence signal, and the optical fiber probe is used for detecting the fluorescence signal. According to the application, sample collection, photo-thermal cycle amplification and real-time fluorescent quantitative detection can be integrated, and rapid and effective detection of a virus sample is realized.

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 discloses a laser-phosphorescence coupling type optical path system for a two-dimensional phosphorescence temperature measurement optical fiber probe, and relates to the field of non-contact solid surface temperature measurement, and the laser-phosphorescence coupling type optical path system is characterized in that an object to be measured is coated with a phosphorescence material coating; the laser light source generates laser capable of exciting the phosphorescent material coating; the laser transmission module is located on a light path of laser emitted by the laser light source; the light splitting module is positioned on a laser emergent light path of the laser transmission module and is also positioned on a phosphorescence emergent light path of the coupling transmission module; the coupling transmission module is positioned on a laser emergent light path which is turned back by the light splitting module and is also positioned on a phosphorescence emergent light path of the object to be measured; the image decomposition module is located on a phosphorescence emergent light path of the light splitting module; the image receiving module is located on a phosphorescence emergent light path of the image decomposition module. On the basis of realizing two-dimensional phosphorescence image acquisition, the laser and phosphorescence transmission efficiency is improved, the size of the probe is reduced, and the problem of high-efficiency transmission of two-dimensional phosphorescence signals in a narrow space is solved.

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 an array type focused laser differential interference measurement system, relates to the technical field of fluid mechanics measurement, and aims to solve the problem of how to improve the FLDI measurement efficiency and ensure the measurement precision at the same time. An emission light path generates multiple paths of light splitting pairs by using a diffractive optical element; a multi-path optical fiber array receiving system is arranged at the tail end of the receiving optical path and comprises a plurality of groups of receiving terminals, each group of receiving terminals comprises a three-dimensional coordinate frame, a photoelectric detector and an optical fiber probe, a rigid connecting rod is fixedly connected to a moving part of the three-dimensional coordinate frame, and the optical fiber probe is fixedly connected with the rigid connecting rod; the positions of the rigid connecting rods of the multiple groups of receiving terminals are respectively adjusted, so that the positions of the receiving ends of the multiple optical fiber probes are respectively in one-to-one correspondence with the final imaging focus positions of the multiple paths of light in the receiving light path; the device is simple in structure and ingenious in conception, the measurement efficiency can be remarkably improved, and meanwhile it can be guaranteed that multiple paths of optical signals are respectively and accurately received, so that the measurement accuracy is guaranteed.

The invention discloses a temperature range control device and method for multi-wavelength laser intracranial ablation, and the device comprises an optical fiber probe, a multi-wavelength laser, a controller and an MRI temperature measurement device, and obtains an optimized ablation width through the mixing of different wavelengths according to the absorption characteristics of biological tissues of different wavelengths. A controller is set to calibrate the temperature rise widths of different-wavelength lasers emitted by a multi-wavelength laser in the corresponding biological tissue in advance according to an MRI temperature measuring device, the controller is used for selecting different-wavelength lasers for mixing according to the temperature rise widths of the different-wavelength lasers in the corresponding biological tissue, and the temperature rise widths of the different-wavelength lasers in the corresponding biological tissue are calculated according to the set width of a biological tissue ablation area. The mixing proportion of the laser of each wavelength is adjusted, and the temperature control range is changed; the laser power is automatically adjusted by the controller to ensure that the temperature rise of the biological tissue is maintained for a specific time, so that the biological tissue is destroyed.

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 underground fluid detection device integrating acoustic signals and a laser-induced breakdown spectroscopy technology. The underground fluid detection device further comprises a laser spectrum acquisition device, an acoustic signal acquisition device and a fusion signal analysis and correction module, the laser spectrum acquisition device is arranged above the conveying pipeline and comprises a solid laser, a beam expander, a reflector, a focusing lens and an optical fiber probe; the acoustic signal acquisition device is arranged close to one end of a water inlet of the drainage pipeline, and the fusion signal analysis and correction module is connected with the laser spectrum acquisition device and the acoustic signal acquisition device; the fusion signal analysis and correction module comprises a processor, the processor is connected with the oscilloscope, compared with the prior art, the LIBS technology and the acoustic detection technology are fused, the characteristics of the underground fluid can be known more comprehensively, and the efficiency and accuracy of underground fluid detection are greatly improved.

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 utility model discloses a rotor fluorescent optical fiber temperature measurement system, and belongs to the technical field of optical fiber temperature measurement. A rotor fluorescent optical fiber temperature measurement system comprises a temperature measurement module, a power supply module and a communication module. The temperature measuring module is arranged on the rotor and detects the temperature of the rotor; the power supply module supplies power to the temperature measurement module and provides working voltage; the communication module is connected with the temperature measurement module and converts temperature data monitored by the temperature measurement module into serial port signals to be sent to the control terminal, and the temperature measurement module comprises a fluorescence signal demodulation module and a fluorescence optical fiber probe connected with the fluorescence signal demodulation module; the plurality of fluorescence signal demodulation modules are arranged at the end part of the rotor and are uniformly distributed around the axis of the rotor; the fluorescent optical fiber probe is mounted at a corresponding temperature measuring point of the rotor according to a temperature measuring requirement; the fluorescence signal demodulation module comprises a single-chip microcomputer, an operational amplifier, an excitation light source, a photoelectric detector and a serial port conversion circuit.

The invention provides a method for measuring cavitation collapse pressure and a Y-shaped optical fiber probe device thereof, and belongs to the field of cavitation collapse pressure measurement in multiphase flow. The method for measuring the cavitation collapse pressure mainly comprises the following steps of: 1, decomposing a voltage to be measured into an average direct current component voltage and an average alternating current component voltage; 2, obtaining the relation between the measured voltage and the liquid refractive index through the relation between the measured voltage and the liquid refractive index; and step 3, obtaining a group of liquid densities according to the relationship between the measured voltage and the liquid refractive index, finally obtaining the relationship between the cavitation collapse pressure in the to-be-measured liquid and the liquid density by combining a Tit equation or looking up an IAPWS table, and further obtaining the relationship between the measured voltage and the pressure generated by cavitation collapse in the to-be-measured liquid. According to the method, the pressure generated by cavitation collapse can be measured simply, efficiently and at high frequency.

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 provides a cable joint temperature detection method and device, electronic equipment and a storage medium, and belongs to the technical field of optical fiber temperature measurement, and the method comprises the steps: determining a target collection duration based on the attributes of a cable joint and the characteristics of a fluorescent material, and determining a target collection frequency based on the attributes of the cable joint and the characteristics of the fluorescent material; the fluorescent material is a fluorescent substance in an optical fiber probe of the optical fiber temperature measurement sensor; performing temperature measurement on the cable joint based on the target acquisition duration and the target acquisition frequency to obtain a first temperature; and calibrating the first temperature based on the environment information of the cable joint to obtain a second temperature of the cable joint. According to the invention, the temperature measurement error of the cable joint can be reduced, and the temperature measurement accuracy is improved.