877results about How to "Realize measurement" patented technology

The invention discloses a feature size parameter extraction method and system, terminal equipment and a storage medium. The method comprises the following steps: providing a plurality of feature sizes of a to-be-detected feature and simulation spectrums corresponding to the feature sizes; the feature size and the simulation spectrum serve as a data set of a neural network model, the neural network model is trained until the training error of the neural network model is smaller than a preset threshold value, and it is determined that training of the neural network model is completed; measuring a measurement spectrum of the to-be-measured feature by using measurement equipment; predicting the feature size of the to-be-measured feature according to the measurement spectrum and the trained neural network model to obtain a predicted size range of the feature size; and fitting the measured spectrum with the corresponding simulation spectrum in the predicted size range to obtain a simulation spectrum which is optimally fitted with the measured spectrum, and extracting a theoretical feature size corresponding to the simulation spectrum which is optimally fitted as a final feature size. According to the invention, the measurement of the to-be-measured feature size can be rapidly realized, and the requirement of online measurement is met.

The invention relates to a flexible electrochemical pH sensor as well as a preparation method and application thereof. Wherein the flexible electrochemical pH sensor comprises a flexible nanofiber substrate as well as a working electrode and a reference electrode which are arranged on the surface of the flexible nanofiber substrate at an interval, the working electrode comprises a first working part and a first wire part connected with the first working part, and the first working part is provided with a polyaniline sensitive layer. The flexible electrochemical pH sensor has the characteristics of high sensitivity, good flexibility and good air and moisture permeability, can be tightly attached to the surface of skin to monitor the pH value of body fluid, and is high in monitoring accuracy and simple in manufacturing method.

The invention provides a probe type multi-parameter ocean sensor based on a seven-core optical fiber. The device is characterized by comprising a broadband light source, a seven-core optical fiber fan-in and fan-out device, a circulator, a spectrograph and a seven-core optical fiber probe, wherein the seven-core optical fiber probe is formed by sequentially welding two capillary tubes with different inner diameters on a seven-core optical fiber. A probe fiber end is ground into a cone frustum, the grinding surface of the cone frustum is plated with a nanogold film, a fiber end capillary tube is filled with transparent elastic colloid, the side faces of three side cores of a seven-core optical fiber are polished and then plated with metal nanofilms, and a fiber grating is written into a central core of the seven-core optical fiber corresponding to the polishing and grinding area of the side cores. Therefore, measurement of salinity, pressure intensity, temperature, heavy metal concentration and biochemical molecules in an ocean sensing application scene can be realized. The optical fiber sensor is flexible and tight in structure and can be widely applied to the optical fiber sensing application fields such as ocean exploration, water body safety and biomedicine.

The invention discloses a single code channel absolute displacement sensor with a series structure, which is characterized in that excitation electrodes are arranged on the upper surface of a fixed ruler base body, induction electrodes are arranged on the lower surface of a movable ruler base body, the upper surface of the fixed ruler base body is uniformly divided into at least two areas along the length direction, and a group of excitation electrodes are arranged in each area; all the excitation electrodes are located on the same straight line to form a single-row structure. Each group of exciting electrodes consists of a plurality of exciting pole pieces which are uniformly distributed, the number of the exciting pole pieces is integral multiple of 4, four adjacent exciting pole pieces form an antipode, and the number of antipodes of the exciting electrodes in each area on the sizing base body is sequentially increased by one from one end to the other end. And four groups of induction electrodes with the same structure are uniformly distributed on the same straight line on the lower surface of the movable ruler base body. According to the absolute displacement time grating sensor, absolute displacement measurement can be achieved, meanwhile, a sensor structure occupying a small longitudinal space is provided, and the application field of the absolute displacement time grating sensor is widened.

The invention discloses a method and a system for transmitting a unified global elevation reference by using a no-load time-frequency signal. The method comprises the following steps: acquiring a time-frequency observation value transmitted based on the no-load time-frequency signal; calculating the gravity potential difference of the two ground stations based on the transmitted time-frequency observation values; according to the gravitational potential difference and the altitude conversion model, the altitude of the ground station to be measured on the regional geoid is obtained; according to the elevation conversion relation between the regional geoid and the globally unified elevation datum plane, the altitude on the regional geoid is converted to the globally unified elevation datum plane. According to the method, the defects of high cost, low efficiency and poor precision of traditional altitude measurement can be overcome, cross-sea elevation measurement is realized, global elevation datum unification is realized at centimeter-level precision, an elevation datum unification principle is combined with a time-frequency transmission technology, and a brand-new research method is provided for realizing global elevation datum unification.

The invention provides a pressure pipeline inspection and detection digital system based on the Internet of Things. Comprises: an axonometric mapping module for drawing a three-dimensional model by using an axonometric mapping instrument to obtain an initial axonometric map; comprising an automatic drawing mode and a manual drawing mode. And the positioning module is used for collecting real-time geographic position information of the pipeline and marking and recording the real-time geographic position information in the initial axonometric map to obtain a complete axonometric map. And the data processing module is used for acquiring, storing and analyzing actual detection data of the pipeline. And the information association module is used for associating the macroscopic inspection information with the safety accessory information of the pipeline on the complete axonometric map. The detection report module is used for generating a detection record and a detection report; an interaction terminal, a tablet computer and a two-dimensional code printer. According to the invention, data can be automatically collected, processed and analyzed, personal errors are reduced, and the working efficiency of inspection work is improved; and digital management of a pressure pipeline inspection and detection process is realized.

The invention provides a three-dimensional point cloud-based geometric shape and position dimension measurement method and application thereof. The method utilizes a three-dimensional scanning technology to obtain three-dimensional point cloud data of an industrial part, and processes and measures the three-dimensional point cloud data through the following steps: 1, preprocessing: removing isolated points, outliers and Gaussian noise in the point cloud through filtering; 2, geometric feature extraction: extracting geometric features with linear and arc features, and dividing the geometric features into single-cluster point clouds; 3, straightness and roundness measurement: fitting the point clouds with geometric characteristics into a straight line or a circle so as to measure straightness and roundness; and 4, arc length measurement: providing a method for sequentially searching adjacent points on the linear point cloud, calculating the sum of the distances between the adjacent points, and further measuring the arc length. The application field of the invention comprises the measurement and the quality control of the part size in the manufacturing industry. The method performs non-contact measurement based on the three-dimensional point cloud data, and has the characteristics of high efficiency, high precision and strong anti-interference performance.

The invention discloses a microwave electric field measurement method and device based on Rydberg atom Rabian resonance, and the key point of the technical scheme is that the microwave electric field measurement device comprises an alkali metal atom gas chamber, a static magnetic field generation device, detection light, coupling light, a dichroscope, a photoelectric detector, an arbitrary waveform generator (AWG) and a horn antenna; sinusoidal phase modulation is applied to the microwave, the modulation frequency is variable, the Labir frequency of the microwave to be measured is obtained through a Labir resonance curve by utilizing Labir resonance generated between the phase modulation microwave and the three-energy-level Rydberg atoms, finally the electric field intensity of the microwave to be measured can be obtained through a microwave electric field intensity traceability formula, and under the action of a static magnetic field, the electric field intensity of the microwave to be measured can be measured. And the degeneracy of the atomic hyperfine energy level is destroyed, so that the measurement result is more accurate, and the measurement frequency band is wider. Moreover, the method can achieve the self-calibration measurement of the microwave electric field, and enables the magnitude of the amplitude of the electric field to be directly traced to the international unit system (SI system).

The invention provides a high-resistance coaxial shunt, which comprises an outer conductor, a central shaft conductor and a resistor body, and is characterized in that the outer conductor, the resistor body and the central shaft conductor are of cylindrical structures and are coaxially arranged from outside to inside; the resistor body is of a laminated structure, and the conductive length of the resistor body is larger than the physical length of the resistor body in the laminated state. According to the high-resistance coaxial shunt provided by the invention, the resistor body is arranged to be of the laminated structure, so that the conductive length of the resistor body can be effectively prolonged, and the resistance value is increased under the condition that the conductive area and the physical length of the resistor body are not changed. The invention also provides a current detection system.

The invention discloses an inhaul cable based on an optical fiber technology and a cable force measuring method thereof, and the method comprises the steps: obtaining the monitoring data and state data of the inhaul cable, carrying out the temperature compensation of the monitoring data, obtaining a temperature compensation wavelength, correcting the temperature compensation wavelength, obtaining a first correction wavelength, correcting the first correction wavelength, obtaining a second correction wavelength, and obtaining the cable force of the inhaul cable. Determining a first inhaul cable force according to the second correction wavelength, constructing an inhaul cable force measurement model, optimizing the inhaul cable force measurement model according to the cable force error, and inputting monitoring data and state data of a to-be-measured inhaul cable into the optimized inhaul cable force measurement model to obtain a cable force measurement result. The inhaul cable based on the optical fiber technology is installed on a structure to obtain light wave signals, the light signals are processed, the cable force of the inhaul cable is calculated, and the cable force of the inhaul cable is measured in the using process of the inhaul cable based on the optical fiber technology.

The invention discloses a single-excitation dual-output multi-parameter measurement eddy current sensor, which is characterized in that after the eddy current sensor is arranged on the surface of a tested piece, a sine excitation signal with certain frequency and power is introduced into an excitation coil, and a magnetic field generated by the excitation coil generates eddy current on the surface of the tested piece; in the actual detection process, the lift-off value of the eddy current sensor and the surface of the tested piece is changed due to mechanical vibration or random working conditions, impedance in the excitation coil is changed, and then the current value of a loop where the excitation coil and the capacitor are located is changed. The impedance change caused by lift-off can be represented by acquiring the voltage values at the two ends of the capacitor; the differential receiving coil receives a combined magnetic field of a primary magnetic field and an eddy current field under the combined action of the primary magnetic field and the eddy current field, and has a lift-off suppression effect to a certain extent, and the balance of the receiving coil is broken only when a defect is encountered, so that the defect is detected and represented by measuring a voltage signal of the receiving coil.

The present invention relates to a posture measurement system and method, and specifically to an environment-adaptive array target posture measurement system and method, which solves the technical problems that the existing array target posture measurement methods have low measurement accuracy and are difficult to achieve simultaneous and high-precision measurement of array targets. The present invention measures the posture of array targets based on laser and photogrammetry, uses a laser with known spatial posture information and a flat target to form a plurality of non-collinear laser spot centroids, obtains characteristic information of the flat target through a camera, and then performs geometric correction on the two-dimensional position information of the laser spot centroid on the flat target, and then calculates the deflection amount in the laser transmission process according to the environmental parameters on the laser light path, performs position compensation on the two-dimensional position information of the laser spot centroid, and then couples the spatial posture information of the laser beam, thereby obtaining the posture information of each flat target, and then solving the overall posture of the array target, and achieving simultaneous and high-precision measurement of the array target posture.

The invention relates to a wind power blade mold closing seam thickness detection device and method. The device comprises a pressed body, a detection assembly, a power supply and a signal processor. The pressed body comprises a contact plate I and a contact plate II; one ends of the contact plate I and the contact plate II are connected through a revolute pair, the relative rotation axis of the contact plate I and the contact plate II is A, and the included angle between the two is an acute angle; the point, farthest from the axis A, on the contact plate I is B; the detection assembly is arranged on the upper surface of the contact plate II and connected with the negative electrode of the power supply through the signal processor. The contact plate I is connected with a power supply anode. After the web plate is closed, the contact plate I rotates relative to the contact plate II under the extrusion effect and makes contact with the upper end face of the detection assembly in sequence, and the distance between mold closing seams at the moment can be obtained according to the voltage input condition of the signal processor. According to the invention, the automatic detection and recording of the mold closing seam gap can be realized, the operation is simple and flexible, the detection precision is high, and the problems of measurement errors and the like caused by plasticine placement and manual measurement can be effectively solved.

The present invention relates to a plasma thruster plume parameter multi-point measurement device and a measurement method, the multi-point measurement device comprises: a vacuum chamber; a vacuum pump unit connected to the vacuum chamber; an industrial control unit connected to the vacuum pump unit, used to provide and maintain the vacuum environment of the vacuum chamber; and a measurement unit; the measurement unit comprises: at least two three-dimensional mobile platforms arranged in the vacuum chamber; a detection structure arranged on the three-dimensional mobile platform; a collection unit connected to the detection structure and used to collect data; the detection structure adopts a Langmuir probe, an RPA probe or a Faraday probe. The present invention can improve the plasma measurement efficiency, can continuously measure the multi-point symmetry of the plume, break the limitation of the use of the Langmuir probe, and shield the error interference in the probe circuit. At the same time, the multi-point measurement device of the present invention has a simple structure, is stable and reliable, and has strong practicality.

The invention belongs to the technical field of airborne atmospheric detector equipment, and particularly relates to an airborne cloud water content detection system, which comprises a constant-temperature hot wire sensor, a cloud water content detection module, a cloud water content detection module and a cloud water content detection module, the pressure sensor is used for measuring atmospheric pressure; the temperature sensor is used for measuring the temperature in the cloud; the humidity sensor is used for measuring the humidity in the cloud; the data processing module is used for receiving the data of the sensor and processing and analyzing the data through a specific algorithm to determine the cloud water content; the data communication module is used for outputting the measured data and the calculated cloud water content data to a computer or other acquisition detector equipment through the Ethernet or a serial port; and the heating control module is used for keeping the detector in a preset standard working temperature range so as to ensure the measurement accuracy and the reliability of detector equipment, and has the effect of finely detecting the airborne cloud water content.

The invention discloses an inter-satellite baseline measurement method and device based on a rotary table, and belongs to the technical field of space measurement. The method is realized by an inter-satellite baseline measurement device in the measurement system, and the measurement system further comprises a three-axis turntable, a laser vision fusion measurement device and a GNSS (Global Navigation Satellite System), the laser vision fusion measurement device comprises a laser ranging module and a vision measurement module. The laser vision fusion measurement device is fixedly connected with the three-axis turntable, the laser vision fusion measurement device rotates along with the rotation of the three-axis turntable, and an inter-satellite baseline preliminary measurement result is determined by using GNSS navigation data; the inter-satellite preliminary measurement result comprises a preliminary baseline direction; according to the initial base line direction, controlling the three-axis turntable to adjust towards the initial base line direction, so that the laser vision fusion measurement device is aligned with the auxiliary star target; and performing fusion measurement on the auxiliary star target by using the laser vision fusion measurement device to obtain actual baseline data between the auxiliary star target and the laser vision fusion measurement device. According to the invention, high-precision inter-satellite baseline measurement can be rapidly realized.

The invention discloses a water quality judgment method, system and device suitable for a robot and a storage medium, and the method comprises the steps: S1, controlling the robot to reach a first position, obtaining a first speckle image of an underwater target object, and carrying out the calculation of a first depth according to the first speckle image; s2, the robot is moved to a second position, a second speckle image of the underwater target object is obtained, and a second depth is calculated according to the second speckle image; s3, extracting a speckle region in the first speckle image to obtain first brightness; extracting a speckle region in the second speckle image to obtain second brightness; and S4, calculating the attenuation coefficient of the water body according to the first brightness, the first depth, the second brightness and the second depth. The attenuation coefficient of the water body is calculated by using the speckle images at different distances, and the method is suitable for the underwater robot and has the advantages of simplicity in operation, low cost, easiness in expansion and the like.

The invention discloses a magnetic field measurement method and system, a system working method, a device, equipment, a medium and a product. The magnetic field measurement method comprises the steps that a first resonance spectrum of a nitrogen vacancy NV color center is obtained by applying first microwaves to the NV color center, and the first microwaves comprise microwaves with a left-hand circular polarization component and a right-hand circular polarization component; a second resonance spectrum of the NV color center is obtained by applying second microwaves to the NV color center, and the second microwaves comprise left-hand circular polarization microwaves or right-hand circular polarization microwaves; determining high-low information of a response peak in the second resonance spectrum by referring to the first resonance spectrum; and determining the direction of the magnetic field to be measured according to the height information. The magnetic field measurement method realizes measurement of the direction of the to-be-measured magnetic field.

The invention discloses a zero-flux current sensor and a zero-flux insulation leakage current detection method, and belongs to the technical field of electric leakage detection. According to the zero-flux current sensor, the iron core, the coil and the circuit of the sensor are designed, and a zero-flux closed-loop feedback structure is formed by arranging the induction iron core unit, the measuring coil unit and the detection circuit module and is used for detecting insulation leakage current, so that measurement of weak alternating-current and direct-current leakage current can be realized; the structure is simple, practical and convenient to produce and manufacture. Furthermore, a first excitation coil, a second excitation coil and a compensation coil are arranged to form a magnetic field modulation current feedback compensation structure, magnetic field balance can be achieved, noise elimination detection is further achieved, and therefore the sensor has the advantages of being high in measurement precision, high in anti-interference capacity and stable in performance. Therefore, detection of tiny current of hundreds of microamperes to several mA levels can be realized.

The present invention belongs to the technical field of instrumentation, and specifically is a multi-point proximity sensing network system based on an electrostatic induction mechanism. The system of the present invention includes: a DC voltage source, an ammeter, a transistor, and a signal line with a shielding layer; the voltage source is used to apply a source-drain bias to the transistor; the ammeter is used to test the channel current under the source-drain bias of the transistor; the signal line is arranged according to the sensing position requirements, and the shielding layer is partially broken at the position where proximity sensing detection is required to expose the internal signal line as a sensing end; all shielding layers are grounded, and all internal signal lines are electrically connected to the gate end of the transistor. When the object to be measured approaches or moves away from any sensing end, the electrostatic induction effect causes the induced potential on the gate of the transistor to change, thereby confirming the approach of the object to be measured. The present invention only uses one transistor combined with a reasonable wiring design to realize a network structure with a multi-point sensing function, avoiding the shortcomings of the solution of using multiple transistors to realize multi-point sensing.

The invention relates to the field of vibration acceleration measurement, and discloses a two-dimensional fiber grating acceleration sensor and an acceleration measurement method.The sensor comprises a square plane rotating body, bases are arranged at the four corners of the rotating body in a forward extending mode, and each base is provided with a sensing unit; the sensing unit comprises cantilever beams, a mass block and an optical fiber, the fixed ends of the cantilever beams are installed on the base, the movable ends of the cantilever beams are connected with the mass block, and the four cantilever beams are parallel to the four edges of the square respectively; an optical fiber is arranged between the mass block and the base where the mass block is located, and an optical fiber grating is engraved in the middle of the optical fiber. The sensor structure disclosed by the invention has good stability, can reduce the influence of environments such as water flow erosion and the like, is compact in structure, realizes automatic temperature compensation while increasing the sensitivity, can resist Z-direction interference, and is suitable for being mounted in severe environments such as narrow space, high temperature and high pressure, strong electromagnetic interference and the like.

The invention discloses a PET empty bottle or glass empty bottle outer contour and bottle opening size measuring system and method, and the system comprises a rotating rod, a rotating rod driving assembly, a bottle opening outer diameter detection light source, a bottle body outer contour detection light source, a CCD bottle opening outer diameter detection camera, a CCD bottle body outer contour detection camera, an upper reflective mirror, a lower reflective mirror, and a control module. Dynamic or static measurement of the outer contour and the bottle opening size of a PET empty bottle or a glass empty bottle is realized. The problems that in an existing PET empty bottle or glass empty bottle outer contour size measuring system, when the relative distance between a CCD camera and a measured bottle needs to be increased to capture an image of the whole large-size bottle in the face of a large-size PET empty bottle or glass empty bottle, the occupied area of the whole measuring system is increased, and the measuring accuracy is high are solved. And the utilization rate of the design space is directly influenced.

The embodiment of the invention provides a laser direct-writing image detection method, a laser direct-writing image detection system and related equipment, which realize accurate positioning of an image deformation area position on a complete exposure breadth and measurement of deformation quantity by detecting the offset of light spots of different lasers in the horizontal direction at the same moment. The method comprises the following steps: arranging a plurality of groups of non-repeated binary images to be ranked in the horizontal direction to form an image sequence, and carrying out binarization processing on the image sequence to obtain the position of a laser exposure point; in a synchronous scanning process of a plurality of lasers in the laser array, controlling each laser to expose a mapping position of an exposure point on a photosensitive coating in an image sequence by using a synchronous switch instruction so as to respectively form a latent image of the image sequence in a respective scanning area of each laser; and if the plurality of developing image sequences are not aligned in the horizontal direction from the target binary images in the same sequence, detecting coordinate values of difference points of the target binary images in each developing image sequence in the horizontal direction.

The invention discloses a flexible pressure monitoring system for hip replacement surgery, and belongs to the technical field of biomedical instruments. The flexible pressure monitoring system comprises a flexible front-end signal acquisition module, a rear-end signal processing module and an upper computer system, the flexible front-end signal acquisition module is connected with the rear-end signal processing module, and the rear-end signal processing module is connected with the upper computer system; the flexible front-end signal acquisition module comprises a flexible pressure sensor, and the flexible pressure sensor is arranged at a hip joint; the flexible pressure sensor comprises a flexible substrate, an electrode layer, a spacing layer, a sensitive layer and a packaging layer. According to the flexible pressure monitoring system, the uncertainty that the operation effect is judged only according to experience in the hip joint replacement operation process is made up, clear pressure distribution at the hip joint in the operation process can be provided for surgeons, and objective mechanical data are provided for selection and adaptation of prostheses.

The invention discloses an incremental encoder speed measurement method and device and a computer readable storage medium, and the method comprises the steps: obtaining the number of captured pulses and the time of capturing pulses at the current rotating speed calculation time, and obtaining the number of captured pulses and the time of capturing pulses at the last rotating speed calculation time; according to the number of captured pulses at the current rotating speed calculation moment and the number of captured pulses at the last rotating speed calculation moment, pulse number deviation is determined, and according to the capture pulse moment at the current rotating speed calculation moment and the capture pulse moment at the last rotating speed calculation moment, pulse time deviation is determined; acquiring a pulse number and a timer clock frequency corresponding to each circle; determining a first ratio of the pulse number deviation to the pulse number corresponding to each circle, and determining a second ratio of the pulse time deviation to the clock frequency of the timer; according to the product of the first ratio and the second ratio, the actual rotating speed of the motor is determined, and the speed measurement precision in the full speed range is improved.

The invention provides a Fe3O4 nano-particle microscopic imaging detection method based on left-handed and right-handed polarization modulation, belongs to the technical field of photo-thermal science and detection and signal processing, and solves the problems that at present, nano single particles are difficult to observe, and the physicochemical characteristics are difficult to obtain, the method specifically comprises the steps that a to-be-detected sample is determined, and a slide sample is prepared; starting a computer, a data acquisition card, a lock-in amplifier, a galvanometer controller and a function generator; starting an exciting light and probe light laser power supply and a refrigerator; detection parameters, laser power / current parameters and modulation parameters are set, and scanning detection is conducted on the detection sample piece; loading a magnetic field; the computer reads a signal from the data acquisition card to obtain a photo-thermal detection result image; different laser parameters and magnetic field sizes are changed, the steps are repeated, circular dichroism and magnetic circular dichroism detection results are obtained, magnetization curve measurement is carried out, and the single nanoparticle magnetic moment overturning process is monitored.

The invention discloses a fan acoustic mode decomposition method and system based on multi-measurement Bayesian compressed sensing, and the method comprises the steps: 1, obtaining a multi-measurement Bayesian compressed sensing model according to the highest order and modal monitoring range of an aero-engine fan single-tone noise circumferential dominant acoustic mode; the maximum number of microphones arranged in the circumferential direction of the aero-engine fan casing and the installation position angles of the microphones are determined; 2, a given number of microphone positions are randomly selected from the determined installation position angles, a multi-measurement-vector Bayesian compressed sensing model is constructed according to the modal monitoring range and the selected microphone positions, and the given number is not larger than the maximum microphone number; and step 3, based on the multi-measurement-vector Bayesian compressed sensing model, measuring the circumferential dominant sound mode of the aero-engine fan. The method can automatically adapt to different rotating speed working conditions for acoustic modal measurement, and has better robustness.

The invention relates to a measurement method, system and device based on hybrid frequency modulation, computer equipment and a readable storage medium. The method comprises the following steps: carrying out interference on positive and negative frequency sweeping sideband components of a first modulation signal and a reflection signal to obtain a first interference signal; determining the absolute distance and / or speed information of the target object based on the first interference signal; the first modulation signal is obtained by performing frequency sweeping sideband modulation on output light of a light source by a first modulator, and the reflection signal is obtained by reflecting the received first modulation signal by a target object; performing interference on the second modulation signal and the zero-frequency component of the reflection signal to obtain a second interference signal; determining vibration information of the target object based on the second interference signal; and the second modulation signal is obtained by performing fixed-frequency and frequency-shift modulation on the output light through a second modulator. By adopting the method, multi-dimensional measurement of the to-be-measured object can be realized.

The invention provides a two-dimensional measurement method for the temperature of a combustion field, which comprises the following steps: tuning laser frequency to be stabilized in the center of an iodine molecule absorption line, outputting a narrow-linewidth single-longitudinal-mode continuous light beam by a laser, dividing the light beam into two light beams by a spectroscope, enabling one light beam to pass through a reference light path and be used for acquiring an instrument function of a VIPA-based spectrograph, and enabling the other light beam to pass through a reference light path; the other beam of light is incident into a combustion field as exciting light and interacts with gas in the combustion field to generate a scattering signal, the light receiving system collects and filters the scattering signal to obtain filtered Rayleigh-Brillouin scattering (FRBS), and the filtered Rayleigh-Brillouin scattering (FRBS) is transmitted to the spectrograph and the CCD through the optical fiber for spectral resolution and signal acquisition. The scanning system completes two-dimensional profile scanning of a combustion field, retrieves the temperature of an acquired FRBS spectral line through an FRBS theoretical model, and achieves two-position measurement of the temperature of the combustion field. The method can be provided for retrieving the gas temperature based on FRBS in a high-temperature environment containing strong mie scattering or strong background light, can adapt to different environments and requirements, and provides higher flexibility.

The invention belongs to the field of composite material manufacturing, and relates to a manufacturing method of a composite material box-shaped beam with closed-angle ends. The composite material cover plate of the composite material box-shaped beam can be manufactured, and the structural form of the composite material cover plate can well act on curing forming of the composite material box-shaped beam. According to the invention, the manufacturing of the composite material box-shaped beam, the inspection of the axial direction size, the inspection of the profile size and the like can be realized. The invention innovatively provides a metal joint structure to replace a commonly used metal hinge support arm, and the metal joint structure has a function of measuring the profile precision of the inner profile of the edge strip of the composite box-shaped beam. The invention innovatively provides a split combined type forming tool and a measuring tool, and realizes a manufacturing process method of the composite material box-shaped beam with the closed angle at the end part. The measuring tool is innovatively provided, the measuring tool can measure the axial direction size of the composite material box-shaped beam, and the measuring range is large.