593 results about "Spectrograph" patented technology

The invention discloses a PCB (printed circuit board) back drilling stub length detection device and method, and belongs to the technical field of PCB detection, the PCB back drilling stub length detection device comprises a broadband light source, the output end of the broadband light source is connected with an optical fiber coupler, and one end, deviating from the broadband light source, of the optical fiber coupler is respectively connected with a first optical fiber collimator and a second optical fiber collimator; the first optical fiber collimator is provided with a lens and a reflector on an optical transmission path; the second optical fiber collimator is provided with a galvanometer on a light transmission path, and a scanning lens is arranged in the light emitting direction of the galvanometer; and the optical fiber coupler is also connected with a spectrograph. On the basis of the low-coherence light interference principle, the PCB back drilling stub length detection device is designed, the output power and the output bandwidth of a broadband light source are correspondingly adjusted, the insertion loss of an optical fiber coupler is controlled, the collection rate of a spectrograph is adjusted, finally, the axial resolution reaches 5 micrometers, the transverse resolution reaches 10 micrometers, and the requirements that the diameter is smaller than 0.1 mm, and the detection precision is larger than 0.1 mm can be met. And detecting the stub length of the deep micropore with the depth of less than 10mm.

The invention provides a laser spectrum online analyzer, and relates to the field of mineral processing. The laser spectrum online analyzer comprises a control analysis unit, a first sample chamber, a second sample chamber, a spectrum unit and a laser unit, the first sample chamber is used for accommodating a tested sample; the second sample chamber is used for accommodating a to-be-detected sample; the spectrum unit comprises a spectrograph, a first light receiving probe and a second light receiving probe; the laser unit comprises a laser light source, a reflector, a first focusing lens and a second focusing lens. The control analysis unit compares the current spectral intensity of the detected sample with the spectral intensity of the detected sample which is measured in advance, so that the change amplitude of the spectral intensity can be obtained, the spectral intensity is calibrated, and long-term on-site stable operation can be realized. In addition, the laser spectrum analyzer can also perform self-calibration on spectral line drift.

The invention discloses a synchronous clock correction device and method for a time-gated spectral measurement and optical imaging system, and the device comprises a pulse laser, a sample stage, a spectrometer, an image intensifier, a detector, a delayer, a gating module, a control computer, and a synchronous correction module. The pulse laser outputs sample exciting light to the sample table, the spectrograph, the image intensifier and the detector, one path of a synchronous trigger signal is output to the synchronous correction module, and the other path of the synchronous trigger signal is transmitted to the image intensifier through the delayer and the gating module; detecting a gating signal through a synchronous correction module, comparing a time difference between the gating signal and a synchronous trigger signal to obtain a delay adjustment value, and adjusting a delayer through a control computer, so that the time when the gating signal starts an image intensifier is consistent with the time when an optical signal generated after a sample is excited to reach the image intensifier; according to the invention, the influence of temperature drift in an electronic system is reduced, the stability of the system is improved, and the measurement error is reduced.

The invention discloses a method for evaluating the quality of a metal part, which comprises the following steps of: determining the laser type according to the characteristics of the metal part, obtaining various laser parameters for evaluating the quality of the metal part through an experimental method, and performing laser irradiation by adopting the accurately controlled laser parameters. In combination with real-time monitoring and regulation of instruments such as a power meter, a spectrograph, a roughmeter and an optical microscope, a laser parameter-grain boundary definition data set is formed, and finally a quality evaluation model is established to realize accurate evaluation of the quality of the metal parts. According to the method, the quality of the metal parts can be evaluated quickly and economically.

The utility model discloses a single-point infrared temperature measuring device for a hot end part of an aero-engine, and relates to the field of temperature in-situ detection of engine blades. The device mainly comprises an optical probe with a cooling function, a spectrograph, a photoelectric detector, a high-precision motion positioning platform and a data processing system. The front end of the optical probe reflects radiation energy on the surface of the blade into the collecting lens set through the reflector, the spectrograph divides spectral energy into three different wave bands, signals are collected through the photoelectric detector and the high-speed data collector, and temperature information is obtained through calibration and analysis. The high-precision motion positioning platform adopts a sliding table and a rotating mechanism, and can control the adjustment of the angle of a reflector and the stretching of an optical probe, thereby achieving the precise measurement of the temperatures of different target positions. The whole device is compact in structure, and has the characteristics of high measurement precision, flexible position, low energy loss and the like, and can resist high temperature of 1500 DEG C.

The invention relates to a linear array push-broom imaging spectrum system based on an optical fiber device, which comprises a spectrograph, an objective lens and an optical switch, and is characterized in that the view field of a telescope objective is fully utilized, and a second optical fiber of a linear array is coupled to the focal plane of the objective lens to fill the one-dimensional view field of the objective lens. The second optical fiber is connected with the optical switch, the on-off of the sub optical fibers corresponding to different view fields is rapidly controlled through the optical switch, and the flight motion of the aerial carrier platform is matched, so that rapid time-sharing detection based on different view fields of the same high-speed spectrometer can be realized, and an imaging spectrum detection effect similar to push-broom imaging detection can be realized. Compared with a conventional linear array sweep imaging spectrum system, the optical fiber array and the optical switch device are adopted to replace a sweep mechanism, sweep mechanical moving parts are not needed, the size and the weight of the imaging spectrum system are greatly reduced, and the influence on the flight stability of an aerial carrier platform is extremely small.

The invention provides a multi-wavelength frequency comb laser working point screening method. The method comprises the following steps: S1, setting a starting current, a current interval, a termination current, a starting voltage, a voltage interval and a termination voltage according to threshold current performance parameters and use requirements of a to-be-screened multi-wavelength frequency comb laser; and S2, according to the initial current, the current interval, the termination current, the initial voltage, the voltage interval and the termination voltage set in the step S1, controlling a current source and a voltage source to output current and voltage to the multi-wavelength frequency comb laser to be screened for multiple times according to the current interval and the voltage interval, acquiring output spectral information of the multi-wavelength frequency comb laser under each current and voltage condition by adopting a spectrograph; s3, automatically analyzing the number of the optical frequency combs in each piece of spectral information through a computer by adopting a preset spectral analysis method, and summarizing the numbers of the optical frequency combs of all the spectral information to make a working point diagram; and S4, current and voltage corresponding to the point with the maximum number of optical frequency combs in the working point diagram are selected as working points.

The invention provides a spectrograph wavelength calibration method, device and equipment and a medium, and the method comprises the steps: obtaining the spectral data of a spectrograph at different temperatures, and obtaining the spectral data of the spectrograph at different temperatures according to the pixel positions of a characteristic wavelength point at different temperatures and the pixel position of the characteristic wavelength point at a preset reference temperature; determining the pixel position offset of the characteristic wavelength point at different temperatures, and calibrating the wavelength of the spectrograph according to the pixel position offset of the characteristic wavelength point at different temperatures; in the process of calibrating the wavelength of the spectrograph, the wavelength drift caused by the pixel position offset of the characteristic wavelength point at different temperatures is fully considered, the output error of the wavelength of the spectrograph is reduced, and the wavelength output accuracy of the spectrograph is improved.

The invention discloses an on-line detection method for volatile organic compounds in waste gas, and belongs to the field of waste gas emission monitoring, the detection method comprises the following specific steps: I, starting a quantum cascade laser frequency comb of a middle infrared band, calibrating various parameters of the quantum cascade laser frequency comb, and ensuring to cover a characteristic absorption area of the volatile organic compounds in the waste gas; iI, inputting the waste gas into a gas detection chamber through a sampling pipeline, monitoring the state of the waste gas in real time, and dynamically adjusting the conditions of the gas detection chamber according to various collected signals; the device can capture instantaneous fluctuation of waste gas concentration in real time, meets the high-speed dynamic emission monitoring requirement, has extremely high coherence and narrow linewidth, can analyze tiny spectral line differences which cannot be distinguished by a traditional spectrograph, remarkably improves the detection precision and the recognition capability, ensures that a measurement result still keeps consistency and high reliability under different working conditions, and is suitable for large-scale popularization and application. The signal-to-noise ratio is obviously improved, the power drift is reduced, and long-time stable operation is realized.

The invention discloses an optical coherence tomography optical path structure and a dispersion compensation method thereof. The light path structure comprises a coherent light source, a 2 * 2 optical fiber coupler, a reference light path, a sample light path, an equal-wave-number spectrograph and an upper computer; low-coherence broadband light emitted by the coherent light source is divided into reference light and sample light after passing through the 2 * 2 optical fiber coupler, the reference light and the sample light are sequentially transmitted in a reference light path and a sample light path, the reference light and the sample light are retroreflected through a sample and a reference mirror and are retroreflected to the 2 * 2 optical fiber coupler according to an original light path, interference is generated, and interference light beams are transmitted to the equal-wave-number spectrometer. Interference light beams are split to an upper computer according to equal wave number intervals, and a tomographic image of a sample is obtained through algorithm processing of the upper computer. By means of the structure, the existing dispersion loss problem is solved from the source, most dispersion generated by a light path is solved, other dispersion is eliminated by adding a dispersion compensating mirror made of optical glass materials with certain thickness in the light path through algorithm calculation, the algorithm is simple, convenient and fast, and the imaging speed is high.

The invention belongs to the technical field of optical fiber gas sensing, and discloses an optical fiber photoacoustic gas sensing system and method suitable for a low-pressure environment. The system comprises a programmable logic gate array circuit, a distributed feedback laser, a laser transmission optical fiber, an optical fiber photoacoustic sensing probe, a super-radiation light-emitting diode light source, an optical fiber circulator and a spectrograph. The air pressure is monitored according to the linear relation between the resonance frequency of the cantilever beam and the ambient air pressure, the characteristic that the acoustic sensitivity at the resonance position of the cantilever beam is enhanced under the low air pressure is utilized to make up for signal attenuation in the photoacoustic excitation process, and the sensitivity is corrected in combination with the air pressure measured by the cantilever beam. Therefore, high-precision and high-sensitivity detection of trace gas in a low-pressure environment is realized. The system only adopts a single cantilever beam and a single demodulator, has the functions of gas pressure and gas concentration detection, and can realize accurate detection of trace gas in a gas pressure change environment. And an all-fiber scheme is adopted, so that intrinsic safety is realized, and remote measurement and multi-point network group detection are easy.

Performance evaluation and structural optimization methods for a high-power semiconductor laser chip, and a performance evaluation system for a high-power semiconductor laser chip. The performance evaluation method for a high-power semiconductor laser chip comprises: providing a window on an N-side electrode of a chip to be tested (step 1); keeping the chip in an operating state (step 2); allowing a quantum well active region of the chip to generate spontaneous emission, so that the spontaneous emission is imaged outside the chip (step 3); acquiring, by means of a spectrograph, a spectrum of the spontaneous emission outside the chip and obtaining a two-dimensional distribution of a quantum well temperature of the chip in the operating state; and acquiring, by means of a CCD camera, an image of the spontaneous emission imaging outside the chip and obtaining a two-dimensional distribution of charge carriers in the quantum well of the chip in the operating state (step 4). According to the performance evaluation and structural optimization methods for a high-power semiconductor laser chip, the distributions of the temperature and the charge carrier concentration in the quantum well of the chip to be tested in the operating state in which the resolution is freely adjusted can be obtained. Operations of the methods are convenient, and implementation is simple and easy, thereby efficiently improving the accuracy of an evaluation result.

The invention discloses a temperature-based LED color deviation compensation correction method. The method comprises the following steps: measuring LED lamp bead data by using a spectrograph and importing the data into a PC terminal; normal-temperature color coordinate values and normal-temperature luminous flux values of red, green and blue channels of the LED lamp beads collected at the normal temperature of 25 DEG C and the temperature t serve as independent variables at a PC end, data of the LED lamp beads are fitted into a multivariate high-order function through machine learning, and the multivariate high-order function is written into a program code of a controller; measuring primary color coordinate values and primary luminous flux values of red, green and blue channels of the LED lamp beads at 25 degrees once by using a spectrograph, and writing the primary color coordinate values and the primary luminous flux values into a controller; the controller obtains the current temperature value t ', and the actual color coordinate value and the actual luminous flux value of the LED lamp bead under the current temperature value t' are calculated; and calculating the target duty ratios of the red, green and blue channels of the LED lamp beads with the target color and writing the target duty ratios into an LED driver, wherein the LED driver drives the LED lamp beads to mix light with the same color as the target color. The production efficiency of the atmosphere lamp is improved, the production process is simplified, and the color cast compensation precision of the atmosphere lamp is improved.

The invention discloses a spectrum correction type imaging colorimeter and a chromaticity coordinate measuring method. The spectrum correction type imaging colorimeter is used for reducing the rotating angle of a wheel rotating disc when chromaticity coordinates are measured. The colorimeter comprises a colorimeter main body, a wheel rotating disc and a conduction assembly, the wheel rotating disc and the conduction assembly are respectively arranged on the colorimeter main body; a shooting lens and a measuring plate which are adjacent to each other are arranged on the wheel rotating disc, the measuring plate is divided into a first part and a second part, the measuring plate is circular, the circle center of the measuring plate is located in the second part, a reflecting prism is arranged in the first part, and the distance from the geometric center to the rotating center of the reflecting prism is equal to that of the reflecting prism; the distance from the circle center of the shooting lens to the rotation center is equal; the wheel turntable has a shooting position and a measuring position, and at the shooting position, the shooting lens and the incident light path are coaxial; at the measuring position, the wheel rotating disc is controlled to rotate, so that the reflecting prism is coaxial with the incident light path, the reflecting direction of the reflecting prism is coaxial with the arrangement direction of the conduction assembly, and the conduction assembly is used for being connected with a spectrograph.

The invention provides a soil stress monitoring method based on a distributed echo wall optical fiber cavity array, which innovatively utilizes a plurality of echo wall structures to realize distributed multi-point monitoring of soil stress in the same optical fiber, and accurately reflects the spatial distribution of the soil stress by monitoring the resonant frequency change of the echo wall structures; the method comprises the following steps: testing connection; monitoring the resonant frequency of the echo wall of the optical fiber echo wall array sensor; a wide-spectrum light source is adopted to excite an optical fiber to generate an optical signal, after the optical signal is transmitted by the optical fiber, when the optical signal passes through echo wall structures with different diameters of the optical fiber echo wall array sensor, the optical signal resonates at resonant frequencies of the echo wall structures, so that resonant trapped waves on multiple frequencies appear in a transmitted spectrum measured by a spectrograph; monitoring the resonant frequency change of the echo wall structure caused by the soil stress, and obtaining the spatial distribution information of the soil stress.

The invention provides an all-day water body circular polarization hyperspectral measurement method and device. The method provided by the invention comprises the following steps: respectively transmitting circularly polarized white light and linearly polarized white light to a first spectrograph and a second spectrograph, constructing a first equation based on the received circularly polarized white light information, and constructing a second equation based on the received linearly polarized white light information; solving a first correction coefficient and a second correction coefficient by combining the first equation and the second equation; emitting a circular polarization white light source above the horizontal plane of the water area to be detected, receiving scattered light information of substances in the water area to be detected, and correcting the received scattered light information based on a first correction coefficient and a second correction coefficient; and searching and determining target substance attributes corresponding to the actually measured circularly polarized light spectrum curve based on the actually measured circularly polarized light spectrum curve and the circularly polarized light spectrum curve standard library. The all-day water body circular polarization hyperspectral measurement method and device provided by the invention are used for realizing all-day water body circular polarization hyperspectral accurate detection.

The invention provides a method for testing a phased array compact range of a high-orbit communication satellite. The method comprises the following steps: unfolding and fixing a whole satellite antenna on the ground; confirming that a test coupler is installed and a cable is connected normally; uploading software to a phased array antenna and confirming that the function is normal; setting a phased array transponder path, switching on the change-over switch, and opening the active single machine and the phased array on the path; after the phased array is preheated through telemetering, system-level testing is carried out, wherein at least one performance parameter such as noise spectrum and equivalent omnidirectional radiation power and functions such as program control pointing and beam hopping are tested; program control pointing function verification is performed according to wave beam program control preset pointing, and the DUT turntable is matched to verify the precision; hopping beam function verification jumps according to a preset time slot, and a Zero Span mode of a frequency spectrograph analyzes a time domain characteristic verification time sequence; and switching the phased array to standby after verification, shutting down after telemetering is normal, and recovering the on-satellite state. In this way, it can be ensured that the integration performance of the phased-array antenna and the transponder system meets the design requirement through quantitative analysis.

The invention discloses a Fabry-Perot interference type hydrogen detection device and method. The Fabry-Perot interference type hydrogen detection device comprises a broadband light source, a spectrograph, an optical fiber coupler, a sensing probe, a test gas chamber and a reference probe, the sensing probe and the reference probe are provided with sensor structures based on an optical fiber Fabry-Perot cavity, and the optical fiber coupler outputs input light emitted by the broadband light source to the sensing probe and the reference probe through a port A, a port B and a port C; light reflected by the optical fiber Fabry-Perot cavities of the sensing probe and the reference probe is output to a spectrograph through a D port, so that an interference spectrum is demodulated; hydrogen to be detected is mixed with air, then enters the test gas chamber through the gas flow rate controller, and is discharged from the outlet; the sensing probe adopts an anodic aluminum oxide / palladium film as a terminal reflector of a Fabry-Perot cavity, and an interference spectrum is detected through a spectrograph to obtain hydrogen concentration information in the environment; the reference probe adopts two single-mode optical fiber end faces to align in a sleeve and form an air Fabry-Perot cavity, and the reference probe only provides a stable reference spectrum to realize a vernier effect.

The invention relates to a self-coherence optical fiber interference device and method for simultaneously measuring morphology and thickness. The device comprises a light source module (1), a measurement light path (2), a compensation light path (3), a spectrograph (4), a mechanical motion module (6) and a data processing module (5), the measuring light path (2) comprises an optical fiber circulator (21), an optical fiber retroreflector (22) and an optical probe (23) and is used for realizing focusing measurement and enabling reflected light of the end face of the optical fiber retroreflector (22) and reflected light of a transparent object to be measured to return; reflected light of the end face of the optical fiber retroreflector (2) and reflected light of the transparent object to be measured form a measuring light beam, and the measuring light beam enters the compensation light path (3); the compensation light path (3) comprises an optical fiber splitter (31), an optical fiber delay line (32) and an optical fiber coupler (33), the measuring light beam is subjected to optical path compensation to generate a compensation light beam, and the compensation light beam and the measuring light beam are combined and input into the spectrograph (4) together.

The invention discloses a bacterial liquid concentration detection device and method based on a multi-angle rotation spectrum, and relates to the technical field of bacterial liquid concentration detection.The device comprises a light source, a transmitting optical fiber terminal, a centrifugal tube, a receiving optical fiber terminal, a spectrograph, a rotating platform and a computer; the rotating platform is used for driving the transmitting optical fiber terminal to rotate; the computer extracts multi-angle rotation spectrum fusion features according to original spectrum data, and the original spectrum data comprises spectrum data in different wave band ranges at different transmitting optical fiber terminal positions; the multi-angle rotation spectrum fusion features serve as input, the concentration of the sample solution to be detected is obtained through a concentration detection model, and the purpose of nondestructive detection of the concentration of the coprophilous bacteria solution is achieved. By acquiring spectral data of different wave band ranges at different transmitting optical fiber terminal positions, spectral characteristic information related to activity in the coprophilous fungus liquid can be effectively improved, so that the concentration of the coprophilous fungus liquid is accurately detected.

The invention discloses magnetron sputtering coating equipment integrated with an X fluorescence spectrometer and a working method of the magnetron sputtering coating equipment, and relates to the technical field of thin film deposition. The magnetron sputtering coating equipment comprises a sample injection cavity, a sample placing cavity, an isolating valve and a process cavity which are sequentially distributed in the linear direction; a transmission manipulator is mounted in the sample injection cavity and is used for driving a wafer to be transmitted and moved in the lofting cavity and the process cavity; an X fluorescence spectrophotometer for dynamically detecting the thickness of a wafer film is mounted on the sample injection cavity; the lofting cavity is matched with the transmission manipulator and is used for storing wafers; a liftable sample table, an angle-adjustable cathode target head and a flexible mechanical structure are arranged, the difference between the thickness data and the target thickness is judged at the first time of obtaining the thickness data of the spectrograph, so that the angle of the cathode target head is automatically adjusted, and the target thickness is corrected; the whole equipment is high in automation degree, and the working efficiency is improved.

The invention discloses a visible light bremsstrahlung diagnostic device and a fusion plasma electron density profile measurement method. The visible light bremsstrahlung diagnostic device comprises a vacuum chamber, an objective lens, an optical fiber, a spectrograph and a spectrum detector. The vacuum chamber is used for generating plasma and is provided with an observation window; the objective lens, the optical fiber, the spectrograph and the spectrum detector are sequentially connected to form an optical diagnosis system for observation, and correspondingly, the front end of the objective lens faces the observation window, and visible light bremsstrahlung radiation of the plasma is observed through the observation window. The fusion plasma electron density profile measurement method comprises the following steps: S100, measurement: measuring plasma radiation through the visible light bremsstrahlung radiation diagnosis device; and S200, calculation: calculating the electron density profile of the plasma through a formula. Compared with an existing contact type measurement method, the visible light bremsstrahlung radiation diagnosis device and the fusion plasma electron density profile measurement method are a non-contact and interference-free measurement method.

The invention discloses a DMD-based local imaging method and a spectrum system, and the method comprises the steps: S1, pre-constructing an instance segmentation model which is used for recognizing a target needing local imaging before imaging, and is trained by learning the individual features and boundary information of the target needing local imaging; s2, an imaging device carrying the instance segmentation model is adopted to carry out local shooting imaging on a target needing local imaging, in the shooting process, the imaging device drives a turnover assembly to turn over to a designated position according to the recognition result of the instance segmentation model, after the direction and intensity of output light beams are adjusted, the output light beams are focused after being split, and the target is obtained; the light of each wavelength can be clearly imaged, a local image of a target at any position can be accurately obtained, and the problems of low data acquisition efficiency and data redundancy caused by the fact that an existing spectrograph cannot carry out flexible scanning imaging on a specific area are solved.

The invention relates to the technical field of surface topography measurement, and discloses a spectral interference surface topography measurement method and device based on a metasurface. The device comprises a spectrograph, a white light source, an optical fiber, a focusing metasurface and a dispersion metasurface, the focusing metasurface and the dispersion metasurface are arranged in parallel and aligned, a spherical thin lens and a micro-nano structure are arranged on the two sides of the focusing metasurface respectively, and a reflecting metal film is arranged between the two sides; a semi-transparent and semi-reflective film and a micro-nano structure are arranged on the two sides of the dispersion metasurface respectively; the focusing metasurface is used for converging parallel incident light, one part of light serves as reference light and is reflected and focused on the reflective coating by the semi-transparent and semi-reflective film, and the other part of light serves as measuring light and penetrates through the semi-transparent and semi-reflective film; the dispersion metasurface is used for carrying out axial dispersion on light penetrating through the semi-transparent and semi-reflective film, monochromatic light focused on the to-be-measured surface returns along a light path and interferes with reference light, and a confocal signal or an interference signal is generated to calculate morphology information of the to-be-measured surface. By adopting the device, high-precision surface topography measurement can be realized in a narrow space.

The invention provides a new material packaging box quality detection device, and relates to the technical field of packaging box detection.The new material packaging box quality detection device comprises a workbench, a detection shell is fixedly installed in the left half area of the upper portion of the workbench through a supporting block, and a spectrograph is embedded in the right side of the bottom end face of the detection shell; when the detection area provided with the packaging box non-standard sample moves to the position of the spectrograph, the proximity switch also senses the matched sensing block, so that the control flashing lamp and the off-post judgment timing module are started, if a worker leaves a post, the off-post judgment timing module cannot be closed, and when a timing value is reached, the microcontroller controls the audible and visual alarm to be started, so that the non-standard sample of the packaging box is detected. The method and the system can be used to attract the attention of surrounding personnel and off-post workers, ensure that the spectrometer fault can be found and processed in time, and solve the problems that the current spectrometer lacks an effective fault detection mechanism, the workers cannot perceive the fault at the first time, the off-post condition of the workers is not considered, and the spectrometer fault is difficult to find and process in time during off-post.

The invention discloses a solid waste classification method based on a spectrometer, and relates to the technical field of solid waste analysis, and the method comprises the following steps: S1, preliminary classification: obtaining a sample of unknown solid waste, and observing the characteristics of the sample to obtain characteristic information; s2, selecting a spectrograph: selecting the spectrograph according to the feature information; analyzing the sample by using a spectrograph to obtain a spectrogram; the spectrogram comprises a spectrum curve; s3, spectrogram preprocessing: carrying out normalization processing on the data of the spectrum curve; s4, similarity analysis: for the spectrum curves of the multiple samples, randomly selecting two samples for comparison to obtain a similarity value; if the similarity value is within a preset threshold range, the two samples to be compared belong to the same kind of solid waste. The method is low in operation cost and low in professional degree requirement on workers, and can realize rapid and efficient analysis and classification of solids.

The invention provides an array type near infrared spectrum acquisition coal quality online detection device and method, and relates to the technical field of mineral detection equipment. The multipoint array type near infrared spectrum acquisition on-line detection device comprises a laser range finder, a data processing system, a lifting control system, a liftable ribbon optical fiber, a spectrograph and a light source, the lifting control system can control the lifting and descending of the liftable ribbon-shaped optical fiber according to data acquired by the laser range finder, so that the optical path is kept consistent when the optical fiber acquires the coal flow cross section; and the data processing system performs coal quality information prediction on each detection point of the same coal flow section according to the collected data, and finally adds and sums to obtain a coal quality information prediction value for replacing the coal flow section. According to the coal quality online detection device and method based on array type near infrared spectrum collection, the accuracy of coal quality information prediction is improved, and the sampling and sample preparation process is simplified.

The utility model discloses a peristaltic pump for a spectrograph, which comprises a pump body provided with a rotor; the first pumping component is connected to the pump body and located on the upper side of the rotor, the first pumping component comprises a first pump pipe, a first pressing block and a first pressing rod, and the first pressing rod is connected with the first pressing block, drives the first pressing block to move towards one side of the first pump pipe and can drive the first pump pipe to be matched with the rotor in an abutting mode; the second pumping component is connected to the pump body and located on the lower side of the rotor, the second pumping component comprises a second pump pipe, a second pressing block and a second pressing rod, and the second pressing rod is connected with the second pressing block, drives the second pressing block to move towards one side of the second pump pipe and can drive the second pump pipe to be matched with the rotor in an abutting mode; when the rotor rotates, the rotor can drive the first pump pipe and the second pump pipe to pump liquid in the opposite directions. The functions of liquid supply and waste discharge are achieved in the same pump body at the same time, the working efficiency is remarkably improved, the system structure is simplified, and the requirement for additional pumping equipment is reduced.

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 unmanned aerial vehicle multispectral image real-time radiation correction method and equipment, and relates to the field of unmanned aerial vehicle multispectral image preprocessing. The method comprises the following steps: calculating a ratio of a brightness average value of a standard reflection reference plate area on each wave band to a brightness value of a wavelength corresponding to each wave band in a solar radiation spectrum at the same time; principal component analysis is carried out on all the ratios, principal components serve as independent variables, the actual reflectivity of the standard reflection reference plate serves as dependent variables, a real-time radiation correction model of multiple regression is constructed, and the optimal principal component number is determined; and carrying a multispectral camera and a spectrograph by using an unmanned aerial vehicle, inputting the ratio of the number of optimal principal components into a real-time radiation correction model of multiple regression according to a real-time multispectral image of the field vegetation and a solar radiation spectrum, and outputting the reflectivity of the field vegetation after real-time radiation correction. According to the invention, real-time radiation correction can be carried out on the multi-spectral image of the unmanned aerial vehicle, and the data consistency of the multi-spectral image is improved.