498results about "Spectrum generation" patented technology

The invention relates to the technical field of optical detection, and provides a relative spectral responsivity adjustable optical detector and a use method thereof, the detector comprises an acquisition module, a dispersion module, an adjustment module, a collection module and a detection module which are sequentially arranged along an optical path; the acquisition module is used for acquiring incident light and converting the incident light into divergent, converged or parallel light beams; the dispersion module is used for carrying out dispersion on the light beams output by the acquisition module and carrying out spatial separation on the multi-color light beams according to wavelengths to form dispersion light bands; the adjusting module can dynamically adjust the reflectivity or transmittance of the region corresponding to each wavelength; the collection module is used for converging the adjusted dispersion light band again and transmitting the dispersion light band to the detection module; the detection module is used for receiving the converged light beams and converting the light beams into electric signals. According to the optical detector with the adjustable relative spectral responsivity, by introducing the dispersion module and the adjusting module, light intensity distribution modulation of a dispersion light band is achieved, and the relative spectral responsivity of the detector can be adjusted according to needs.

The resolution-customizable micro spectrometer based on the transverse dispersion metasurface comprises a dispersion metasurface array structure and a focal plane pixel array, and the dispersion metasurface array structure comprises a plurality of dispersion metasurface sub-arrays which are distributed in an array mode and used for preliminary spectrum decoupling and directional convergence. The dispersion metasurface subarray comprises a plurality of dispersion metasurface units and all-dielectric substrates thereof, the dispersion metasurface units are nano-columns with four-fold symmetry, the nano-columns are periodically arranged, and the phase of transmission light is dynamically regulated and controlled according to the frequency omega of incident light. The focal position (x ', y') of the transmission light on the focal plane is in a linear mapping relation along with the change of the omega; the focal plane pixel array comprises a multi-element plane array composed of a plurality of pixels, and the multi-element plane array is in pixel-level registration with the dispersion metasurface sub-array. According to the invention, pixel-level precise condensation is realized, crosstalk is effectively inhibited, the detection precision is improved, and real snapshot spectral imaging is realized.

The invention discloses an ultra-high-speed imaging device based on acousto-optic filtering modulation. The ultra-high-speed imaging device comprises a spectrum modulation system, a spectrum imaging system and a data processing system. The spectrum modulation system utilizes an acousto-optic tunable filter (AOTF) to dynamically modulate broadband continuous spectrum light, narrow-band illumination light which rapidly changes along with time is generated, and time information of a dynamic scene is effectively mapped to a spectrum dimension. And the spectral imaging system images the spectral coded dynamic scene to the hyperspectral camera to realize acquisition of spectral space-time information. The data processing system performs spectral crosstalk correction, channel separation and demosaicing reconstruction on the acquired original mosaic image, and recovers a time sequence image according to a spectrum-time mapping relation, thereby realizing single-shot superspeed imaging in a dynamic process. The device has the advantages of being simple and compact in structure, flexible in time window, high in imaging fidelity and the like, and has wide application prospects in the fields of rapid dynamics such as microfluidics, laser processing and ultrafast physics.

The disclosure relates to embodiments of optical measurement systems that are configured to perform spectroscopic measurements. The optical measurement systems are configured to provide compact arrangements for introducing light into a sample and collecting light returned from the sample. Reducing the size of the launch and / or collection architecture of an optical measurement system may make the overall optical measurement system smaller, thereby providing flexibility in integrating an optical measurement system into various form factors.

The invention provides a spectrometer system comprising a spectrometer chip comprising a camera and a metasurface located on a detection surface of the camera; the metasurface comprises a plurality of nano-pore or nano-column arrays, and selective absorption of light with different wavelengths is realized through surface plasmons generated by different nano-pores or nano-columns; the camera detects the intensity change of light to be detected after the light passes through different nano-pores or nano-column arrays of the metasurface, and then spectral information is obtained through calculation. According to the spectrograph system, selective absorption of light with different wavelengths is achieved through the metasurface, and then spectral information is obtained through calculation, so that the structure of the spectrograph system is compact, and the overall size is very small; and the plasmon generated by the nanopore or nanopillar array has high tolerance to the structure size, so that the processing precision is lower, and large-area and large-batch preparation can be realized.

The invention discloses a hyperspectral imaging system based on prism-grating light splitting, which adopts a slit, a collimator objective, a prism, a grating, an imaging objective and a detector which are arranged in a matched manner, the detector performs push-broom imaging by sequentially collecting relatively moving target object images, the resolution of the imaging in the push-broom direction is in direct proportion to the image collection speed, and the resolution of the imaging in the push-broom direction is in direct proportion to the image collection speed. The image acquisition speed is inversely proportional to the push-scan speed, the detector selects part of the target surface through the region of interest to acquire data so as to increase the image acquisition speed, and the push-scan speed is increased on the premise that the resolution in the push-scan direction is determined; the spectral line bending caused by prism dispersion is opposite to the spectral line bending caused by grating dispersion in direction, and a spectral line bending eliminating light splitting structure is designed to correct the spectral line bending; on the basis of a prism-grating spectral line light splitting eliminating structure, an optical system is designed in combination with the ROI function of the high-speed near-infrared industrial camera, and the acquisition speed of the camera is greatly improved on the premise of moderately reducing the spectral resolution.

The invention relates to the technical field of optics, in particular to a low-crosstalk channel modulation interference polarization spectrum detection method and system, and the system comprises a half-field telescopic module, a phase modulation module, an interference modulation module and a detection module. The half-view-field telescope module is used for performing lower half-view-field beam collimation on an input target beam, the target beam is propagated to the phase modulation module in parallel according to a set range, a composite polarization splitting prism group in the phase modulation module performs light splitting operation based on the target beam output by the half-view-field telescope module, and two parallel polarized lights are emitted, independent phase modulation of the two paths of light is ensured; and the interference modulation module is used for performing light splitting modulation according to the two paths of polarized light to ensure that the two paths of modulated polarized light beams interfere with each other and are transmitted to the detection module for imaging. According to the system, the detection precision of a narrow-band polarization spectrum or a polarization spectrum with an obvious narrow-band wave crest and a narrow-band absorption peak is improved, the polarization spectrum detection capability is high, and the application range is wide.

The invention provides a self-adaptive spectrum adjustment method, device and equipment for a wafer detection UV light source. The method comprises the following steps: acquiring first spectrum data for performing preliminary spectrum detection on a target wafer; variational mode decomposition processing is carried out on the first spectral data, and spectral characteristic parameters of the first spectral data are determined; processing the spectral characteristic parameters through the refined composite multi-scale weighted multi-dimensional characteristic entropy, and determining spectral characteristic vectors of the spectral characteristic parameters; determining a mapping relation between the spectral features and the wafer material features by analyzing the spectral feature vectors; and carrying out adaptive adjustment on the UV light source spectrum according to the mapping relation. Through the implementation of the scheme of the invention, the spectrum of the UV light source is adaptively adjusted according to the mapping relation between the spectral characteristics and the wafer material characteristics, so that the spectral characteristics of the light source can be ensured to be matched with wafer detection requirements, unnecessary spectrum redundancy or missing is avoided, the spectrum utilization rate is improved, the detection time is shortened, and the detection efficiency is remarkably improved.

The invention relates to the field of water and soil conservation online monitoring, in particular to a photonic integrated chip and a soil interface dynamic monitoring device and method. Comprising a substrate, and a beam splitting and combining device, a micro-ring resonator and a grating coupler which are arranged on the substrate, the beam splitting and combining device is connected with the micro-ring resonators, the micro-ring resonators are connected with the grating coupler, the perimeter of each micro-ring resonator is different, and the micro-ring resonators are sequentially arranged at intervals in sequence. According to the invention, real-time monitoring of the soil interface is realized through an accurate optical method so as to determine the height position change of the soil and air interface and further monitor water and soil loss, the method has high sensitivity, non-contact property and sustainability, the efficiency of water and soil loss monitoring can be effectively improved, and reliable technical support is provided for the fields of agriculture, environmental protection and the like.

An apparatus includes a spectrometer receiving an optical input signal that includes an input optical spectrum. The spectrometer includes a fiber laser cavity pumped by a first optical replica of the optical input signal that generates stimulated Brillouin scattering traveling in a direction opposite to a direction of the optical input signal. The first optical replica of the optical input signal excites at least one lasing mode in the fiber laser cavity. The at least one lasing mode respectively includes at least one lasing mode frequency. The at least one lasing mode frequency is offset by a respective Brillouin frequency shift from the respective at least one input frequency. The spectrometer also includes an optical heterodyne receiver. The optical heterodyne receiver generates the electrical output signal. The spectrometer outputs a measurement of the input optical spectrum based on the respective Brillouin frequency shift and the at least one input frequency.

The invention relates to the technical field of spectral imaging, in particular to a high-resolution snapshot hyperspectral imaging system and method based on deep learning. The system comprises a coding receiving module and an algorithm decoding reconstruction module. The coding receiving module comprises an imaging unit, a broadband multispectral filtering array and a detector; a target spectrum cube is imaged on the surface of the broadband multispectral filtering array through the imaging unit, the broadband multispectral filtering array performs spectral response coding on incident light and the incident light is received by the surface of the detector, and efficient coding compression from three-dimensional spectrum information to two-dimensional plane information is realized; the algorithm decoding reconstruction module comprises a spectrum reconstruction network; and combining the spectrum channel coding curve of the broadband multispectral filtering array with the data received by the detector, and inputting the combined data into a spectrum reconstruction network to obtain a high-quality spectrum cube. The method has the advantages that coding and decoding are jointly designed, and the spectral imaging resolution is improved through super-structure surface forward design and neural network fusion of spectral reconstruction.

The invention provides a scene-adaptive tunable calculation hyperspectral imaging system, and provides a hardware-guided spectrum multi-head attention structure module which can introduce partial parameters of a hardware system into a spectrum reconstruction model as priori knowledge and fully utilize optical characteristics of the hardware system to guide a network feature extraction process. Dynamic switching between scanning type data acquisition and snapshot type imaging is realized based on adjustability of LCoS-SLM, hardware coding and software decoding parameters of the system are modified in combination with a scene adaptive mechanism, and the adaptive capacity of the system in a complex scene is improved; that is to say, hardware flexibility and an algorithm are deeply fused, the precision and the dynamic adaptive capacity of spectral imaging are effectively improved, especially the performance in a complex dynamic scene, and a brand new scheme is provided for practical application of the hyperspectral imaging technology.

The invention relates to the technical field of multispectral imaging, in particular to a multispectral photon counting single-pixel imaging device and method, the imaging device comprises a detection assembly and a processing assembly, and the detection assembly comprises a laser source loading optical pulses at a certain frequency; the spatial light modulator is used for undersampling according to the loaded negative W-based pattern to obtain a light signal of the to-be-detected object; the time domain disperser is used for dividing each optical signal into light splitting signals belonging to m spectral bands according to wavelength mapping; the photoelectric detector linear array comprises m detection elements arranged in a linear array, and the m detection elements are used for respectively detecting light intensity signals of the light splitting signals in the corresponding spectral bands to obtain m groups of light intensity signals; the processing assembly collects light intensity signals according to spectral bands and reconstructs spectral images according to the light intensity signals of each spectral band, and m spectral images are obtained. According to the invention, the imaging time is shortened, the imaging cost is reduced, and the multispectral imaging effect in a photon sparse application scene is realized.

The present disclosure provides an optical detection device and an optical path calibration method. The optical detection device includes: a housing 110, a beamsplitter pathway 120, a first photosensor 130, a second photosensor 132, and a calibration light source 134. An aperture 112 is arranged in the housing 110, and is configured to receive radiated light from an external detection region by the aperture 112. The housing 110 processes radiated light from the aperture 112 through the beamsplitter pathway 120, the first photosensor 130, and the second photosensor 132. The calibration light source 134 is arranged inside the housing 110, is configured to radiate calibration light to the beamsplitter pathway 120, and radiate the calibration light to the external detection region through the aperture 112 in the housing 110. The calibration light from the calibration light source 134 and the radiated light from the external detection region are coaxial.

The spectrograph comprises a light source module, a spectrum modulation module, a probe module and a circuit module, the light source module, the spectrum modulation module and the probe module are all connected with the circuit module through electric connecting wires, and the light source module is connected with the spectrum modulation module through a first single-mode optical fiber. The spectrum modulation module is connected with the probe module through a second single-mode optical fiber; the light source module is used for providing an input light signal for the spectrum modulation module through a first single-mode optical fiber under the driving of an electric signal of the circuit module; the spectrum modulation module is used for performing phase modulation on the input optical signal under the driving of the electric signal of the circuit module to obtain a modulated optical signal, and providing the modulated optical signal to the probe module through a second single-mode optical fiber; the probe module is used for detecting an object to be detected according to the modulated light signal to obtain an electric signal and feeding back the electric signal to the circuit module through an electric connecting wire; the circuit module is used for processing the electric signals provided by the probe module to obtain spectrum detection information.

The invention discloses a stress regulation-based micro spectrometer system of a transparent polymer material. The system comprises a polarization modulation unit, a transparent polymer layer, an imaging detector and a spectrum reconstruction module. The transparent polymer material is stretched by a specific design and then is arranged between the two polarizing films of the polarization modulation unit, and the imaging detector chip is arranged at the bottom layer of the device. And the spectrum reconstruction module performs spectrum reconstruction on the data received by the imaging detector by applying a calculation spectrum reconstruction algorithm to restore the original spectrum data received by the whole device. According to the technical scheme, a new spectrum detection thought is provided, and high-resolution spectrum analysis can be carried out in each wave band while the size of a miniature device is ensured by adjusting the applicable wave band of each component.

Optical spectrometers and polarization state hybrid sensors may be used to determine the spectral and polarization state components of electromagnetic waves. Hybrid sensors may be bulky devices and require waves to enter at a nearly direct angle of incidence to record a measurement. What is disclosed is an ultra-compact polarization state sensor with nanophotonic components. Nanophotonic components may contain metasurfaces and Bragg filters. Each metasurface may contain light scattering, anisotropic nanostructures that may be randomized to create a large input angle, and the Bragg filter may result in the light dispersion independent of the input angle. The sensor may be capable of handling about 200 nm bandwidth. The sensor may be able to read image data in the visible and to read spectral and polarization state data in the infrared wavelength range. The surface area of the sensor may be about 1 mm2, allowing it to fit on mobile devices.

The utility model provides a high-resolution spectral confocal measurement device, which includes a light source, a fiber coupler, a spectral confocal lens, a spectral analysis unit and a data processing unit. The spectral confocal lens is arranged between the fiber coupler and the sample to be measured. The spectral confocal lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence. The first lens is a double concave lens, the second lens is a meniscus lens, the third lens is a plano-convex lens, the fourth lens is a double-cemented lens, the fifth lens is a meniscus lens, and the sixth lens is a meniscus lens. With such an arrangement, the spectral confocal lens is improved from multiple aspects such as expanding the incident light beam, correcting aberrations, reducing spherical aberrations, and correcting coma and chromatic aberration, thereby greatly improving the resolution of the lens. The light source is further connected to the spectral confocal lens through a fiber coupler, so that the entire device has a compact structure and is easy to integrate and install.

The invention discloses an integrated polarization, multi-wavelength and multi-frequency photoacoustic tomography device, which comprises a light source assembly, a polarization assembly, a signal receiving assembly and a signal processing assembly, and is characterized in that the light source assembly is used for generating collimated pulse laser with different wavelengths, and the polarization assembly can enable the pulse laser with different wavelengths to generate a polarization state; the polarization angle of the light beam is changed, the signal receiving assembly can detect a photoacoustic signal after the polarized light irradiates a sample, the signal processing assembly is used for amplifying and collecting the photoacoustic signal, the multi-wavelength light source is adopted as an excitation light source, and the polarization assembly enables the laser of each wavelength to generate a polarization state; according to the multi-wavelength multi-frequency photoacoustic imaging system and the multi-wavelength multi-frequency photoacoustic imaging method, a plurality of ultrasonic transducers with different center frequencies are utilized to detect photoacoustic signals, so that polarized light acoustic imaging, multi-wavelength photoacoustic imaging and multi-frequency photoacoustic imaging can be combined, and the purpose of multi-angle and multi-parameter biomedical imaging is achieved.

In a general aspect, a portable quantum spectrum sensing system for detecting electromagnetic radiation in an environment is presented. In some implementations, a portable system includes a vapor cell sensor and a portable control package. The vapor cell sensor includes a vapor and is configured to generate output optical signals based on interactions between input optical signals, the vapor and the electromagnetic radiation. The portable control package includes a laser system configured to generate laser signals and a photonic integrated circuit system configured to generate the input optical signals based on the laser signals from the laser system. The portable control package includes a system-on-chip that can communicate control signals to the laser system and the photonic integrated circuit system. The system-on-chip can also process the output optical signals to determine one or more properties of the electromagnetic radiation.

Provided is a time-stretch spectroscopy device capable of restoring an original spectrum without using a high-speed modulation system or reception system even if temporally adjacent pulses overlap after stretching. This time-stretch spectroscopy device comprises: an optical modulator that performs intensity modulation in pulse units on a group of measurement light pulses, which are obtained by irradiating a measurement object having characteristics relating to light transmittance or reflectance with a group of light pulses; a pulse stretcher that performs time stretching on the group of measurement light pulses; and a signal processing device that, with the assumption that the measurement light pulses are sparse as data, performs a reconfiguration estimating pulse signal wavelength components corresponding to the stretched light pulses, which are obtained by individually time stretching the group of measurement light pulses, in light of a superimposition signal synthesized such that a temporal overlap occurs after the time stretching.

An optical sensor device includes an optical sensor; an optical filter; a phase mask configured to distribute a plurality of light beams associated with a subject in an encoded pattern; a movement component configured to move the phase mask; and one or more processors configured to: obtain, from the optical sensor, a first set of sensor data that indicates information related to first light that originates at the subject and passes through the phase mask when the phase mask is located at a first position; obtain, from the optical sensor, a second set of sensor data that indicates information related to second light that originates at the subject and passes through the phase mask when the phase mask is located at a second position; determine and provide, based on the first set of sensor data and the second set of sensor data, information associated with the subject.

The invention relates to a method for identifying a microbial strain taking the form of a colony, comprising acquiring a set of at least three spectral channels of the colony contained in the visible and infrared spectrum; and making, by means of a computer, a prediction of the species depending on the acquired spectral channels. The three channels of said set that contribute the most to the performance of the prediction are selected from a first spectral band [730-780] nm and from a second spectral band [550-650] nm.

The invention relates to an error self-compensation method, device and equipment for rotary filtering and a medium, and belongs to the field of optical instruments. The method comprises the steps that rotary filtering is carried out by regulating and controlling angular displacement of a monochromator, a single-dispersion light beam is obtained, and the single-dispersion light beam covers a single-dispersion wavelength light beam and a multi-dispersion wavelength light beam; the detection wavelength of the single-dispersion light beam is captured, an error self-compensation model is constructed through disturbance wavelengths to carry out error self-compensation, and the disturbance wavelengths cover the thermodynamic disturbance wavelength, the illumination disturbance wavelength, the current disturbance wavelength, the power disturbance wavelength and the mechanical vibration disturbance wavelength. According to the invention, monochromatic light with different wavelengths can be simply, conveniently and efficiently acquired, discontinuous monochromatic light with multiple wavelengths can be acquired, error self-calibration is realized according to multiple factors, and monochromatic light acquisition is more accurate.

The invention discloses an anti-strong-light polarization detection analysis device and method based on dual polarization modulation, and relates to the field of optical detection, and the device comprises a dual polarization modulation imaging system and an analysis system. The dual-polarization modulation imaging system is arranged on a light path where a measured target is located, and the dual-polarization modulation imaging system is connected with the analysis system; the dual-polarization modulation imaging system is used for acquiring to-be-modulated light rays of a detected target received from different detection angles, performing rotation polarization filtering on the to-be-modulated light rays of the detected target at different detection angles twice, and acquiring to-be-analyzed data at different detection angles; the analysis system is used for analyzing and screening the to-be-analyzed data at different detection angles to obtain a target image; according to the invention, effective inhibition of strong light is realized through the dual-polarization modulation imaging system, the analysis system analyzes and screens the images after dual-polarization filtering at different detection angles, a high-quality target image is obtained, and the accuracy and reliability of a detection result are improved.

The utility model discloses a self-calibration multi-grating monochromator. The self-calibration multi-grating monochromator comprises a self-calibration assembly, a grating spectrum system assembly and an optical receiver. The self-calibration assembly comprises a focus lens, a standard light source and a single-face reflector. And the standard light source is used for emitting a light beam with a specified wavelength to the single-sided reflector. And the single-sided reflector is used for reflecting the light beam to the focus lens, and the light beam is focused to the incident end of the grating spectrum system assembly through the focus lens. According to the utility model, an automatic calibration structure composed of the standard light source and the single-sided reflector is arranged at the incident end of the grating spectrum system assembly, so that the monochromator can emit a light beam with a specified wavelength through the standard light source when being used for a long time, and automatic calibration of the grating spectrum system assembly is realized in cooperation with the light receiver. Besides, the single-sided reflector is installed on the sliding rotary table, so that the single-sided reflector gives way when the grating spectrum system assembly is normally used, and interference with external light is avoided when the grating spectrum system assembly is normally used.

The invention relates to the field of infrared spectrum detection integrated chips, in particular to a metasurface coupling dynamic filtering infrared tunable spectrum encoder which comprises a fixed mirror, a movable mirror and a supporting layer. The moving mirror is of a folding cantilever structure. The movable mirror and the fixed mirror are bonded with each other. The supporting layer is located between the movable mirror and the fixed mirror and supports the movable mirror and the fixed mirror, a suspension layer is formed between the movable mirror and the fixed mirror, electrode connection between the movable mirror and the fixed mirror is completed, and the first-stage dynamic tuning function is completed. And the fixed mirror and the movable mirror electrode are connected to an external circuit. When an external circuit applies bias voltage to the fixed mirror and the movable mirror, the folding cantilever structure is bent, the height of the suspension layer is changed, and filtering tuning is achieved. A more stable suspended micro-bridge structure is adopted, the filtering structure is more compact, and a filtering optical channel with a larger area is obtained. A metasurface light splitting structure is also integrated, namely, a multi-stage dynamic light splitting coding effect is achieved, and a fine bandwidth spectrum effect is achieved. And meanwhile, the metasurface light splitting structure comprehensively utilizes incident light.

The invention discloses an MEMS-based spectral imaging system, which sequentially comprises a front unit, an MEMS, a rear unit and an image sensor from an object space to an image space, the focal plane of the front unit is positioned between the MEMS and the rear unit, the main light of the field of view of the front unit is orthogonal to the MEMS, the object plane of the rear unit is overlapped with the focal plane of the front unit, a front light path, a rear light path and a rear light path are arranged on the front light path, and the image sensor is positioned between the front light path and the rear light path. The MEMS is used for compressing an image in a field angle range, so that the image can completely pass through the MEMS; and the rear light path is used for amplifying the image passing through the MEMS to the image sensor. According to the embodiment of the invention, under the condition that the clear aperture of the MEMS is limited, the central wavelength angle deviation can be suppressed, the spectrum picture with high consistency can be obtained, and the method and the device can be widely applied to the technical field of spectrum imaging.

The invention discloses a metasurface spectrum modulator based on a continuum quasi bound state and a spectrum imaging system. The modulator is an all-dielectric metasurface made of a silicon material, and structural parameters of the modulator can be designed and optimized by comparing reconstructed image quality corresponding to different structural heights. In a high-efficiency short-wave infrared calculation spectrum imaging system, incident light carrying spectrum information of all spatial points of a target object is subjected to spectrum modulation through a metasurface spectrum modulator based on a continuum quasi-bound state according to a spatial position and then is compressed and sampled by a photoelectric detector, and a spectrum of each spatial point of the target object is reconstructed through an ADMM algorithm; and splicing is carried out according to the space point positions, and finally a space-spectrum three-dimensional data cube of the target object is obtained. The short-wave infrared spectral imaging method has high performability, and short-wave infrared spectral imaging with high spectral precision and wide wavelength range is realized.

The invention relates to a multi-component gas monitoring method. The method comprises the following steps: S100, a processing unit sends a control instruction to control a runner device to switch a filter; s200, after the filter switching is completed, the processing unit sends a calibration matrix obtained through pre-calibration to the imaging detector; s300, the imaging detector calibrates the spectral image data collected in the monitoring area according to the calibration matrix; s400, the processing unit sends the calibrated spectral image data to an upper computer; s500, the upper computer calculates the spectral image data and outputs an infrared video signal to a display device; s600, displaying the infrared video signal by a display device; and S700, returning to the step S100, and continuing to execute the next monitoring cycle. According to the invention, the system operation is simplified, the complexity and time delay caused by switching OCC calibration parameters are avoided, the efficiency and accuracy of multi-gas monitoring are improved, and the method is particularly suitable for real-time monitoring in a dynamic environment and has higher stability and reliability.