644 results about "Laser probing" patented technology

The invention relates to the technical field of optical engineering, in particular to an AI silicon carbide lens-oriented aspheric laser polishing precision online detection and feedback system. Comprising a detection module; the data processing module is electrically connected with the detection module and used for constructing a lens surface three-dimensional model and calculating polishing precision parameters; the feedback control module is electrically connected with the data processing module, is used for generating a feedback control strategy and comprises a strategy generation unit and a parameter optimization unit; an execution module; and an intelligent learning module. According to the design, a laser measuring head, an energy sensor array and an environment sensor are integrated through the detection module, synchronous acquisition of multi-dimensional data such as surface profile, laser energy distribution and environment parameters is realized, and three-dimensional point cloud data with consistent time and space are generated through multi-modal fusion processing (time domain synchronization, space registration and feature enhancement) of the data preprocessing unit; the physical essence of the polishing process is completely represented, and the detection comprehensiveness and the data relevance are improved.

The invention discloses an aluminum electrolytic capacitor appearance defect detection device, relates to the field of aluminum electrolytic capacitor detection, and solves the problem that an existing detection device is difficult to comprehensively detect an aluminum electrolytic capacitor. The aluminum electrolytic capacitor appearance defect detection device comprises a device base and two first supporting plates, and two first transmission belts are arranged between the two first supporting plates; a push roller is arranged on the outer side of the first transmission belt, supporting frames are installed on the corresponding sides of the two first supporting plates, a first detection box is fixedly installed at the top of the device base, and a plurality of first laser probes are arranged on the inner side of the first detection box; the transfer mechanism is used for detecting pins of the capacitor, and the transfer mechanism is mounted at the top of the device base; through the transfer mechanism, the first laser probe detects the capacitor entering the first detection box, under the conveying of the first transmission belt, the capacitor is turned over, and the pins of the capacitor can face upwards, so that the pins of the capacitor can be detected conveniently, and the effect of comprehensive detection is achieved.

The invention belongs to the technical field of laser flatness testing, and particularly relates to a modularized box room installation flatness testing device which comprises a fixed frame and a laser detector located in the fixed frame, and further comprises a moving mechanism arranged on the inner side wall of the fixed frame, and the laser detector is arranged on the moving mechanism. The motor is used for driving the laser detector to move multidirectionally; the first electric push rod is fixedly arranged at the bottom of the moving mechanism, a mounting plate is fixedly arranged at the moving end of the first electric push rod, and the laser detector is fixedly mounted on the lower surface of the mounting plate. Through multi-dimensional innovation of optical protection, a self-adaptive mechanical structure, intelligent environment control, automatic marking and the like, the precision and efficiency of modular box room installation flatness detection are remarkably improved, and manual dependence and environment interference are reduced through intelligent design.

According to the mining dust monitoring system and method based on multi-wavelength fusion and dynamic compensation, a light chamber is arranged in an inner cavity of a shell, an inlet of the light chamber is connected with a main gas inlet of the shell through a gas inlet pipeline, and an outlet of the light chamber is connected with a main gas outlet of the shell through a gas exhaust pipeline; the laser detection module is mounted in the light chamber and comprises a lens group, a laser source I, a laser source II, a light scattering signal receiving module, a light transmission signal receiving module and a light trap; the first laser source and the second laser source form a dual-wavelength laser source; the micro fan is mounted in the main air outlet; the environment sensing module is mounted in the exhaust pipeline; the method comprises the following steps: constructing an environment drift prediction model; testing the dust concentration in the environment to be tested, and calculating the dust concentration I Csct and the dust concentration II Ct based on the scattered light electric signal and the transmission photoelectric signal; and carrying out environment drift prediction, and obtaining corrected dust concentration data through a fusion calculation mode. According to the system and the method, an accurate dust concentration monitoring result can be obtained.

The invention discloses an indoor toxic and harmful gas three-dimensional imaging and tracing method and equipment, and the method comprises the steps: placing remote measurement instruments based on a laser detection principle at different corners in a room, obtaining the remote measurement data of each space layer at different scanning angles, and positioning a gas concentration high-value region; dense point locations are arranged in a gas concentration high-value area of each spatial layer, an in-situ measurement instrument based on a spectrum detection principle is utilized to measure and obtain in-situ data on the point locations, and meanwhile, extremely-high-resolution poisonous and harmful gas accurate traceability is realized; the two-dimensional distribution of the gas concentration of each space layer is obtained through remote measurement and in-situ data reconstruction, and is further mapped to a three-dimensional space to realize three-dimensional imaging and gas traceability. A wide-area light beam scattering gas telemetering instrument and a multi-pass reflection ultra-sensitive gas in-situ measuring instrument are autonomously designed, so that full-space rapid three-dimensional imaging and accurate traceability can be realized, system errors are reduced, an extremely low detection limit is achieved, and the feasibility, accuracy and high efficiency of the method are ensured.

The invention provides a spectral analysis line screening method and system, and the method comprises the steps: collecting a plasma spectrum based on a laser probe, taking the plasma spectrum as an original spectrum, calculating a corresponding average spectrum, and carrying out the spectrum peak recognition of the average spectrum through wavelet transformation; extracting predetermined features of spectrum peaks from the original spectrum, and performing classified scanning on each spectrum peak based on the predetermined features of the spectrum peaks; the classified scanning results form a column vector matrix, and an accumulated correlation coefficient between column phasors in the column vector matrix is calculated; arranging the accumulative correlation coefficients in an ascending order, and selecting spectrum peaks corresponding to the accumulative correlation coefficients which are ranked in the front as analysis line clusters; extracting predetermined features of the analysis line cluster from the original data, and constructing a multi-spectral peak classification model through a machine learning algorithm based on the features of the analysis line cluster; and screening the spectral analysis lines to be identified through the multi-spectral peak classification model. Through the scheme, the dimension of the spectral peak feature vector can be reduced, the model data volume is reduced, the analysis line screening efficiency is improved, and the classification accuracy is guaranteed.

The invention relates to the field of laser water depth detection, in particular to a water surface fluctuation compensation method for laser sounding, and solves the problems of insufficient precision and water surface fluctuation interference in a traditional sounding technology in an extremely shallow water area. The measured water depth is corrected through the turbidity sensor, the IMU zero offset compensation sensor and the laser displacement sensor, and the purpose of improving the measurement accuracy is achieved. According to the scheme, the stability and precision of depth sounding of the extremely shallow water area are remarkably improved, and the method has high environmental adaptability and wide application prospects.

The invention relates to the field of laser detection, in particular to a sample mechanism for marine corrosion primary process detection, which comprises a sample box, a sample loading device for placing a sample plate is arranged in the sample box, and one side of the sample box is provided with an excitation interface and a detection interface. The upper portion of the communication port is connected with a three-way connector, the other two connectors of the three-way connector are used for air exhaust and water dripping respectively, the connector for air exhaust is connected with a vacuumizing pump, and the connector for water dripping is matched with a plugging cover. And the water dripping joint is connected with a water dripping pipe matched with a sample plate on the sample loading device. The communicating port is matched with the three-way joint, so that the vacuumizing operation can be completed through the communicating port, and meanwhile, the dripping operation can also be completed, so that the sample plate simulates a sample environment in which seawater is immersed, and a more accurate detection effect can be obtained.

The invention discloses a design and implementation method of a near-infrared light-splitting super lens, and relates to the technical field of super lenses. The super lens is composed of a rotational symmetric structure, so that polarization insensitivity is achieved, incident broadband light can be dispersed to different positions of the same focal plane according to different wavelengths through ingenious optical design, an effective light splitting effect is achieved, and the polarization insensitivity of the super lens is improved by adjusting geometric parameters and shapes of the super lens nano structure units. The positions of light with different wavelengths on a focal plane can be accurately controlled; in the optimization process, a particle swarm optimization algorithm is adopted to reduce errors, and performance attenuation and optical distortion caused by dispersion can be effectively reduced by adjusting dispersion characteristics and geometric parameters of the nano-structure units, so that the precision and reliability of light splitting are improved, and the light splitting precision is improved. The identification capability of the laser detection system is greatly improved, and integration and miniaturization are realized.

The invention discloses ultrafast photo-thermal PCR amplification equipment and a use method. The ultrafast photo-thermal PCR amplification equipment comprises a shell, and a laser probe and an infrared temperature sensor are arranged in the shell; a chip rack is arranged in the shell, and a chip to be tested is placed in the chip rack; the laser probe is located on one side of the chip frame, the infrared temperature sensor is located on the other side of the chip frame, and the laser probe inclines upwards in the vertical direction. An embedded industrial all-in-one machine is installed on the shell, and the output end of the infrared temperature sensor is connected with the input end of the embedded industrial all-in-one machine. An excitation light source of the laser probe and a coupling non-contact infrared temperature measurement sensor can realize temperature control of nanoparticles in different batches, the ultrahigh temperature change requirement of PCR is met, infrared temperature measurement control replaces a traditional thermocouple to serve as a temperature feedback device, the phenomenon of reagent pollution caused by contact measurement is avoided, and the detection accuracy is improved. The accuracy of later data detection is ensured, and the laser probe is inclined upwards along the vertical direction, so that a PCR reaction area is fully covered.

The invention relates to the technical field of laser measuring instruments, and discloses a device for measuring roadway roof separation by laser, which comprises a roadway roof, a laser probe, a first threaded pipe, a second threaded pipe and a mounting mechanism, and is characterized in that the laser probe is mounted on the first threaded pipe and is connected with a cable; the mounting mechanism is used for mounting the second threaded pipe on the first threaded pipe; the mounting mechanism comprises a base arranged on the roadway top plate, a rotating mechanism and a lifting mechanism are arranged on the base, and the lifting mechanism is used for feeding the laser probe, the first threaded pipe and the second threaded pipe into drill holes formed in the roadway top plate. The device for laser measurement of roadway roof separation overcomes the defects that in the prior art, equipment is large in occupied area and depends on the stability of a bottom plate, and the measurement precision is prone to being interfered, and the roof separation measurement device is more efficient, more accurate and more suitable for the underground complex environment.

To measure the temperature of sample gas, such as combustion gas in a combustion furnace or exhaust gas flowing in a flue without using a thermocouple, and accurately measure the concentration of a gas component included in the sample gas.SOLUTION: A gas measuring device comprises: a laser beam source that irradiates sample gas with a laser beam; a photo detector that detects the laser beam transmitted through the sample gas; a radiation thermometer in which a temperature measuring direction is provided along an optical path of the laser beam; and a signal processing unit that calculates the concentration of a gas component included in the sample gas on the basis of a light intensity signal obtained from the photo detector and a temperature signal obtained from the radiation thermometer.SELECTED DRAWING: Figure 1

A system and method are provided for characterizing a laser using a diffraction grating. The system includes a lens that projects diffraction patterns from the diffraction grating as an image of diffraction peaks onto a plane. Optical sensors then sense the diffraction peaks. A processor connected to the optical sensors applies the laser characterization method to determine the laser wavelength, irradiance and angle of incidence. In the method, the processor obtains the diffraction peak measurements from the optical sensors and applies a transform to arrange the diffraction peaks into a grid of regularly spaced peaks. The processor then applies convolution kernels to analyze the grid of regularized peaks to determine a wavelength, irradiance and angle of incidence of the laser.

The invention provides a data processing method of a laser radar and a laser detection system. The data processing method comprises the following steps: S11, acquiring a frame of point cloud data of the laser radar; s12, determining a set of ground points in the frame of point cloud data; and S13, determining calibration parameters of the laser radar point cloud according to the set of ground points. In the embodiment of the invention, after the ground point set is extracted by using the GPU, the point cloud ground level is calibrated at a high speed, so that the radar 3D point cloud ground is aligned with the ground level of the physical world. According to the embodiment of the invention, the ground point in the 3D point cloud can be quickly obtained, the ground point is drawn by using the GPU, and the laser radar point cloud calibration parameter is obtained by using the projection of the ground point in the preset plane, so that the point cloud of the laser radar can be calibrated to be close to a world coordinate system and be basically aligned with the horizontal plane under the world coordinate system.

The invention provides a field-free on-orbit calibration method for a spaceborne photon counting laser radar, and relates to the technical field of spaceborne photon counting laser radars. According to the method, combined registration is carried out on a high-precision airborne laser point cloud and a high-resolution optical remote sensing image, and the plane positioning precision of the airborne laser point cloud is firstly improved by combining the plane positioning advantage of the high-resolution optical remote sensing image and the elevation precision advantage of the airborne laser point cloud; and the satellite-borne photon counting point cloud is matched with the corrected airborne laser point cloud, and the pointing error and the system ranging error of the satellite-borne photon counting laser radar are corrected, so that the field-free in-orbit geometric calibration of the satellite-borne photon counting laser radar is realized. According to the method, dependence on a ground calibration field laser detector is avoided, the method has the advantages of being high in adaptability, high in calibration precision and wide in application range, and a new technical means is provided for improving field-free on-orbit calibration of a spaceborne photon counting laser radar height measurement system.

The invention provides a target position resolving method and device based on a distributed single-phase limited laser detector. According to the method, the structural form of a traditional four-quadrant laser detector is changed, four quadrants are separated and placed in four directions respectively, and the method has the advantages of being easy to install, capable of being transplanted and low in cost. On the basis of not changing the appearance and the structure of the original system, the complexity of a software processing algorithm is increased, so that a target position resolving unit is conveniently added; through verification of a prototype, a set of complete solution is provided. The technology has wide application prospects and huge market requirements.

The invention provides a high-precision flow control system and a high-precision flow control method aiming at the gas flow control problem of silicon nitride film deposition in a semiconductor manufacturing process. In terms of the system, three gas inlet pipes convey different gases, and the explosion risk is reduced through graded mixing of a three-way pipe; the T-shaped design of the second three-way pipe utilizes gravity to assist mixing; each air inlet pipe is provided with a valve and a sensor to provide comprehensive data support; the mixer is specially designed to fully mix gas; a specific gas flow gradient is matched with a multi-stage mixing process to realize accurate control of a stoichiometric ratio; and high-precision data is provided by a specific angle of the laser detector and an advanced detection technology. The method comprises the steps of gas pipeline distribution conveying and premixing, multi-parameter fusion measurement, self-adaptive control, dynamic calibration, mixer optimization and output and the like. The silicon nitride thin film deposition quality is improved, the system safety and the flow control precision are improved, and the production cost and the safety risk are reduced.

The invention discloses a three-dimensional laser-based intelligent bunker detecting system for a coal bunker, which comprises a motion control device, a bunker detecting robot, a remote control system and a bunker detecting data analysis system, and is characterized in that the motion control device comprises a lifting device erected at an inlet of the coal bunker, and the bunker detecting robot is driven by the lifting device to go in and out of the coal bunker; the bin detection robot carries out three-dimensional laser scanning on the form of a coal bin through a built-in laser detection module, collects parameter data of the coal bin through a built-in multi-dimensional sensor module, and sends the scanned three-dimensional data and the parameter data in the coal bin to the remote control system through a communication module. The remote control system realizes remote control of the lifting device and acquisition of data acquired by the bunker exploration robot, and the bunker exploration data analysis system constructs a three-dimensional structure and size data of a coal bunker by utilizing a three-dimensional reconstruction technology and a coal bunker size extraction algorithm. According to the invention, the high-precision detection of the sticking substances on the wall of the underground coal bunker and the deformation of the bunker body is realized, and a basis is provided for the repair decision of the coal bunker.

The utility model discloses a flatness detection device. A cleaning assembly, a drying assembly, a flatness detection assembly and a screening-out assembly are sequentially installed on a conveying device in the conveying direction. A conveying part of the conveying device is used for driving the cooling fins to sequentially penetrate through the cleaning assembly, the drying assembly, the flatness detection assembly and the screening-out assembly. The cleaning assembly is provided with a cleaning head, the cleaning head is aligned with the conveying part of the conveying device, the cleaning head is used for spraying atomized cleaning liquid to the surfaces of the cooling fins, and the drying assembly is used for drying the cleaned cooling fins; the flatness detection assembly comprises a detection support, a lifting cylinder, a lifting plate and a laser probe. The lifting cylinder is fixedly connected to the detection bracket; the lifting plate is connected to the lifting end of the lifting cylinder; and the laser probes are uniformly arranged on the lifting plate. The screening-out assembly is used for pushing out defective cooling fins. And flatness detection is carried out through a plurality of laser probes, so that comprehensive coverage and accurate detection of the surface of the cooling fin are ensured, and the flatness and quality stability of a product are improved.

The invention discloses an infrared four-waveband composite annular aperture folded imaging optical system, belongs to the technical field of optical catadioptric optical paths, and aims to solve the problem that 1550nm / 1064nm dual-laser and medium-wave / long-wave infrared four-waveband composite detection is difficult to realize at the same time in the conventional annular aperture imaging technology. The system comprises a primary mirror, a secondary mirror, a 1064nm laser spot correction mirror, a 1550nm laser spot correction mirror, a 1064nm laser spectroscope, a 1550nm laser spectroscope, a broadband infrared detector, a 1550nm laser detector and a 1064nm laser detector. And high-performance common-aperture composite detection of 1064nm / 1550nm dual laser and medium-wave / long-wave infrared four wavebands is realized through a multi-stage light splitting mechanism. The limitation that a traditional annular aperture system is single in wave band is broken through, and the all-weather sensing and target recognition capability of the system in a complex environment is remarkably improved.

The invention discloses a photovoltaic vehicle-mounted laser detection device with a cleaning function and an application method, and belongs to the technical field of vehicle-mounted laser detection, the photovoltaic vehicle-mounted laser detection device comprises a mounting base and a supporting plate, a machine body is fixedly mounted on the upper surface of the supporting plate, and a sweeping assembly and an air blowing assembly are arranged on the upper surface of the supporting plate; according to the photovoltaic panel cleaning device, the cleaning assembly is arranged, a transmission gear can drive a rotating rod to rotate on a limiting sleeve under the action of a fixed rack, at the moment, the rotating rod can drive a cleaning roller to rotate and move on a photovoltaic panel at the same time, dust on the photovoltaic panel is cleaned, and the photovoltaic panel can be automatically cleaned at regular time; on one hand, the situation that the light energy absorption capacity of the photovoltaic panel is reduced due to too much dust coverage is avoided, the endurance time of the photovoltaic vehicle-mounted laser detection device is further guaranteed, on the other hand, abrasion to the photovoltaic panel during dust sweeping can be reduced through rolling sweeping, and the absorption efficiency of the photovoltaic vehicle-mounted laser detection device is guaranteed.

The present invention provides an automatic detection device and method for defects and states of low-interference drainage pipes, which relates to the technical field of defect detection. It includes an inspection and detection system and two fixed detection systems. The fixed detection system includes a semi-circular pipe wall fixing structure, a fixed detection transmission control system, and multiple first laser probes. The fixed detection transmission control system is installed on the pipe wall fixing structure, and multiple first laser probes are respectively installed at different positions of the pipe wall fixing structure. The multiple first laser probes are connected to the fixed detection transmission control system; the inspection and detection system includes an inspection track and an inspection robot. The inspection robot includes an inspection robot carrier, a robot controller, and multiple second laser probes. The multiple second laser probes are respectively installed at the top and bottom of the inspection robot carrier, and the inspection robot carrier moves along the lower surface of the inspection track in a hoisting manner. The present invention can perform various defect detections when the drainage pipe is in normal operation and drainage.

The present invention provides a bridge crack measuring device and a measuring method for a municipal bridge. The measuring device comprises a panel, a driving mechanism, a laser measuring assembly and a positioning mechanism. A first guide rod is inserted into the inner side of the panel, a positioning mechanism is pressed against the bottom of the first guide rod, a moving wheel is inserted into the bottom of the positioning mechanism, and the positioning mechanism is pressed on both sides of the bridge crack to be measured through the moving wheel. A driving mechanism is installed in the middle of the panel. There are two first guide rods and two positioning mechanisms. The present invention can drive a first laser probe at the bottom to pass along the surface of the bridge crack by toggling a vertical measuring mechanism on one side through a driving mechanism, and cooperate with a translation guide mechanism to obtain the width. Therefore, during the movement of the entire device, the width data of the crack at different positions can be quickly obtained at a higher frequency through the driving mechanism, and the measurement error can be further reduced by cooperating with the translation guide mechanism and the two positioning mechanisms at the bottom for positioning.

The invention relates to a sensor cleaning control method of an unmanned vehicle and a related device thereof, a sensor of the unmanned vehicle is provided with a pollution monitoring unit, and the method comprises the following steps: obtaining multi-element pollution data collected by the pollution monitoring unit; wherein the pollution detection unit at least comprises an image acquisition module and a laser detection module; the multi-element pollution data comprises image data acquired by the image acquisition module and laser data acquired by the laser detection module; the image data and the laser data are analyzed to obtain a pollution result of the sensor, and the pollution result is used for indicating the pollution degree of the sensor; when the pollution result indicates that the sensor is in a pollution state, determining a cleaning strategy based on the multi-element pollution data; and controlling a cleaning system of the unmanned vehicle to clean the sensor according to the cleaning strategy. According to the scheme provided by the invention, the pollution type and degree of the sensor can be accurately identified, a targeted cleaning strategy is adopted, and the cleaning efficiency and the cleaning capability are improved.

The invention discloses a frequency-modulated continuous wave laser radar, and relates to the technical field of laser detection. The laser radar comprises at least two laser light sources, an optical switch assembly and an optical chip. The wavelengths of light signals emitted by the laser light sources are different from each other. The optical switch assembly comprises an optical switch and a wavelength division multiplexer. The wavelength division multiplexer comprises at least two first input ends and a first output end, the first input ends are correspondingly and optically connected with the optical switches, and the first output end of the wavelength division multiplexer outputs optical signals with different wavelengths in a time-sharing mode.

The invention discloses a measuring machine for detecting defects of a constant velocity universal joint component, and aims to solve the problems that the existing equipment is low in double-reference alignment efficiency, poor in precision and easy to be polluted and interfered. The device comprises a workbench with a center avoiding hole, a detection execution unit comprising a detachable contact type or laser measuring head, a motion driving unit driving the measuring head to move in a three-dimensional mode, a reference positioning unit comprising a double-vision assembly and a positioning adjusting assembly, an electric control unit and a cleaning auxiliary assembly. The electric control unit cooperates with the double-vision assembly to collect inner hole and outer circle references and controls the positioning adjusting assembly to finely adjust the position of a workpiece, and double-reference alignment is achieved. The measuring machine can improve the positioning precision and efficiency, enhance the workpiece clamping stability and the equipment universality, reduce the detection error caused by pollution, and guarantee the reliable detection.

The invention discloses a laser fluorescent powder testing device, and belongs to the technical field of fluorescent powder testing, the laser fluorescent powder testing device comprises a slide rail, and a laser emission assembly, an adjusting support and a laser detection assembly which are adjustably mounted on the slide rail, the laser emission assembly comprises a laser, and the adjusting support comprises a first translation stage slidably mounted on the slide rail; a second translation platform is installed on the first translation platform, a rotary displacement platform is installed on the second translation platform, a first vertical displacement platform is installed on the rotary displacement platform, a carrier used for coating fluorescent powder is installed on the rotary displacement platform, a collimating lens is attached to the carrier, and the laser detection assembly comprises a detector. The laser, the carrier, the collimating lens and the detector are located on the same axis; after the fluorescent powder is excited by the laser, the light in the Lamberg distribution is converted into the collimated light, so that the detection convenience is improved, and the accuracy of the detection result is improved.

The invention relates to the technical field of laser measurement, and discloses a differential shell shaft hole alignment measurement device, which comprises a detection table and an adjusting arm movably arranged on the detection table, and a laser detection head is arranged at the end part of the adjusting arm; the workpiece positioner is arranged on the table top of the detection table, an installation arm is rotationally arranged on the workpiece positioner, a limiting piece and a bearing round rod are installed on the middle section and the end of the installation arm respectively, and the limiting piece is used for wrapping type limiting of the tail of a differential shell workpiece; and the rotating wheel is rotationally mounted at the end of the mounting arm, an elastic adhesion piece is arranged on the outer side of a middle shaft in the middle of the rotating wheel, and the rotating wheel and the elastic adhesion piece achieve rotation regulation and control of the differential mechanism shell around the central axis of the differential mechanism shell. According to the shaft hole alignment measuring device suitable for the differential shell, adjustment and control of assembly of the differential shell are facilitated, subsequent laser measurement of shaft hole alignment is facilitated, and the measurement efficiency and accuracy are improved during laser measurement of shaft hole alignment.

The present application discloses a laser detection device and a manufacturing method thereof, which belongs to the field of laser detection technology, such as laser radar (Lidar). The device includes: a multi-phase signal generating circuit, an amplifier array and a laser array. The amplifier array includes a plurality of first amplifiers, and the laser array includes a plurality of laser emitters. The plurality of output ends of the multi-phase signal generating circuit are connected to the input ends of the corresponding first amplifiers, and the output ends of the plurality of first amplifiers are connected to the corresponding laser emitters. Among them, the multi-phase signal generating circuit is used to generate a plurality of target electrical signals with different phases, each first amplifier is used to amplify the target electrical signal, and each laser emitter is used to emit a first laser signal. Since the phases of the plurality of target electrical signals are different, the first laser signal has a strong anti-interference ability, which improves the accuracy of the detection distance. In addition, since the emission power of each laser emitter is small, the emission pulse width can be reduced.

The invention provides a synchronous closed-loop control method for detecting laser light intensity and frequency by a nuclear magnetic resonance gyroscope, which comprises the following steps of: firstly, detecting laser detection power fluctuation by utilizing a splitting part of a beam splitter prism, and realizing closed-loop stable control on the detection laser power by adjusting injection current of a detection laser tube; secondly, a detection power signal absorbed by the air chamber is extracted through a summation signal of the polarization balance beam splitting detection system, the signal reflects fluctuation of the detection laser frequency, and finally synchronous closed-loop stable control over the detection laser frequency is achieved by adjusting the temperature of a detection laser tube with the signal as a closed-loop feedback signal. The synchronous closed-loop stable control of the nuclear magnetic resonance gyroscope detection laser power and frequency can be realized, the nuclear magnetic resonance gyroscope output signal drift caused by the fluctuation of the detection laser power and frequency is inhibited, and the long-term stability of the gyroscope output signal is improved. By applying the technical scheme provided by the invention, the technical problem that the miniaturization requirement of the nuclear magnetic resonance gyroscope is difficult to meet in the prior art is solved.