837 results about "Ir laser" patented technology

A method of making a vacuum insulating panel, the vacuum insulating panel comprising a first glass substrate, a second glass substrate, a plurality of spacers provided in a gap between at least the first and second glass substrates, and a seal provided between at least the first and second glass substrates, the seal comprising a first seal layer and / or a second seal layer. The method may include laser heating, using a laser beam from a continuous wave near-IR laser, seal material in order to form the first seal layer; wherein the laser heating may include causing the laser beam to move at a lateral speed of from about 5-70 mm / second relative to the substrates and the first seal material so that the laser beam at least partially passes through at least one of the glass substrates and impinges upon at least the second seal layer in order to heat the second seal layer and fire and / or sinter the first seal material thereby forming the first seal layer.

The invention discloses a solar cell defect detection method based on a multi-mode sensing technology. The system comprises the following steps: 1, multi-modal data acquisition: acquiring multi-modal data in real time by using four sensing technologies of near-infrared laser, area array visible light, PL and EL; 2, multi-modal data processing: carrying out denoising, edge detection and feature extraction on the acquired near-infrared, visible light, PL and EL images by adopting a mixed image processing algorithm to obtain key defect features; 3, multi-modal data fusion: combining a multi-modal data fusion method with a decision-making level strategy, synthesizing different technical data, improving the detection precision, and classifying, positioning and labeling the defects of cracks, broken gates, scratches, depressions, poor welding and hot spots by using a convolutional neural network to ensure accurate distinguishing of surface and internal defects; and 4, defect marking and production line adjustment: marking defects and adjusting the production line through a feedback and automatic control module, and feeding back a real-time visual result to a management layer.

A method of making a vacuum insulating panel, the vacuum insulating panel including a first glass substrate, a second glass substrate, a plurality of spacers provided in a gap between at least the first and second glass substrates, and a seal provided between at least the first and second glass substrates, the seal comprising a first seal layer. The method may include: providing first seal material for the first seal layer in a location at least partially between at least the first and second glass substrates; laser heating, using a laser beam from a continuous wave near-IR laser, the first seal material in order to form the first seal layer; wherein said laser heating may comprise using the laser beam, having a size of from about 2-15 mm, so that the laser beam at least partially passes through at least one of the glass substrates to fire and / or sinter the first seal material thereby forming the first seal layer, in a manner so that the first seal layer a density of from about 2.8-4.0 g / cm3; and after forming the first seal layer, evacuating the gap to a pressure less than atmospheric pressure.

A multi-accessory mount assembly for use with a firearm, and methods for coupling the assembly to the firearm are provided. The assembly may include a proximal portion having a lower surface configured to be removably coupled to the firearm and an upper surface configured to be removably coupled to a sub mount. The sub mount may be configured to be removably coupled to a first firearm accessory, e.g., an optic scope, a red dot sight, a reflex sight, a night vision monocular or scope, or a magnifier. The assembly further may include a distal portion extending distally from the proximal portion via a neck portion, such that the distal portion is elevated higher than the proximal portion. An upper surface of the distal portion may be configured to be removably coupled to a second firearm accessory, e.g., an infrared laser or a night vision monocular or scope.

The invention relates to the field of diameter measurement, in particular to a steel wire rope infrared laser diameter detection device and method, and the device comprises an installation seat which is connected with a measurement assembly used for measuring the diameter of a steel wire rope. According to the invention, through cooperation between the two mounting ring plates and the limiting rollers correspondingly limited on the two mounting ring plates, a steel wire rope to be measured is supported and limited, and then through cooperation between the laser emitting end and the laser receiving end correspondingly connected in the two mounting ring plates, the steel wire rope to be measured is measured. The steel wire rope diameter measuring device achieves the effect of measuring the diameter of a steel wire rope in a non-contact mode, effectively reduces friction and vibration during relative sliding of the steel wire rope and the shell through cooperation of a limiting roller and a buffer spring, and improves the measuring precision.

The invention belongs to the technical field of camouflage materials, and particularly relates to a natural vegetation imitating visible light-laser-infrared compatible camouflage film. Comprising a substrate, a thermal infrared dual-band camouflage and near infrared spectrum regulation and control layer and a visible light-laser-near infrared regulation and control layer which are arranged in sequence. The upper-layer natural vegetation imitating structure is mainly used for simulating spectral characteristics of natural vegetation, and meanwhile, the extremely low reflectivity at the position of 1.06 mu m near-infrared laser wavelength is achieved by controlling the thickness of a film layer; the thermal infrared camouflage structure in the middle realizes low emissivity of medium-wave infrared and long-wave infrared; the substrate provides a bearing function. The multilayer film not only can realize refined simulation of a reflection spectrum of natural vegetation in a visible light-near infrared wavelength range, but also has the functions of adjusting different visible light spectrum colors and resisting an infrared detector and a 1.06 [mu] m laser detector; and a visible light-laser-infrared multi-band compatible camouflage performance covering a wide wavelength range of 0.4-14 microns can be realized.

The invention discloses an airborne laser radar sounding data processing method and system, and relates to the technical field of marine surveying and mapping and earth observation, and the method comprises the following steps: collecting original full-waveform data of an airborne laser radar sounding system, the original full-waveform data comprising infrared laser channel data and blue-green laser multichannel data; joint denoising processing is carried out on the original full-waveform data to obtain denoised waveform data, and the joint denoising processing comprises background noise modeling and removing based on machine learning and random noise filtering based on frequency domain low-pass filtering; a collaborative joint denoising strategy is formed by fusing background noise modeling based on machine learning and frequency domain low-pass filtering based on signal-to-noise ratio optimization. According to the method, complex background noise can be accurately estimated and removed, random noise can be adaptively filtered out, weak underwater echo signals are reserved to the maximum extent, and the problem of water depth information loss caused by excessive smoothness is effectively avoided.

The invention discloses an unmanned aerial vehicle three-dimensional modeling scanning method. The method comprises the steps of unmanned aerial vehicle flight track setting, multi-azimuth video shooting, infrared laser point position scanning, shot picture data transmission, infrared point position scanning data transmission, video picture decomposition, three-dimensional frame construction, picture three-dimensional segmentation, frame real scene configuration and overlapping part splicing modeling. The method has the beneficial effects that an object needing to be scanned and modeled can be integrally and comprehensively scanned by combining a bottom end annular flight path, a middle spiral flight path and a top end annular flight path only through a three-section type flight path, and the unmanned aerial vehicle does not need to carry out repeated flight paths; the distance data between the surface of the object and the unmanned aerial vehicle is acquired, the three-dimensional frame of the object is formed by combining the point positions, the shape skeleton is matched by combining the real scene picture data of the surface of the object, and the precision of the constructed three-dimensional modeling model can be ensured to be higher by adopting the mode.

An additive manufacturing method based on micro-selective laser melting technology. By using a spot size of 30 μm or less, a metal powder layer thickness of 10 μm or less and ultrafine metal powders having a D90 particle size of 30 μm or less, and in combination with the control of a scanning laser power, a scanning rate, a linear energy density and a volumetric energy density within specific ranges, the method can print complex-structured metal parts having extremely high resolutions and surface smoothness, and can obtain a high-density internal structure of a component even under a relatively low energy density or power condition, thereby effectively protecting an optical system. Moreover, a printed component exhibits a defect-free microstructure, and has excellent electrical properties, thermal properties and mechanical properties. Particularly, ultrafine grains and a high dislocation density provide superior mechanical properties compared to conventional manufacturing materials. An infrared laser device can be used, thereby achieving low costs.

The invention discloses a flow-type Raman sorting method and a high-luminous-flux flow-type Raman sorting device, and the method comprises the following steps: carrying out coincident focusing on Raman laser and near-infrared laser captured by a light trap to form a Raman excitation detection site, and arranging the Raman excitation detection site at the tip of the outer end of a tail end electrode in a chip dielectric focusing electrode; the photo-thermal oscillation near-infrared laser is focused on a tail end electrode in a dielectric focusing electrode of the chip and does not coincide with a Raman excitation detection site; through switching of light trap capture near-infrared laser and photo-thermal oscillation near-infrared laser, a single cell sample is captured and fixed at a Raman excitation detection site through light trap capture force generated by the light trap capture near-infrared laser or bubbles are generated through a photo-thermal effect generated by the photo-thermal oscillation near-infrared laser; the cell sample adhered to the tail end electrode in the dielectric focusing electrode is oscillated and separated through the bubbles. Compared with the prior art, the device has the beneficial effects that the organic combination of optical trap capture and dielectric capture sample oscillation functions can be realized, the switching is convenient, flexible, rapid, simple and reliable in use, the instrument cost is greatly reduced, the application range of the instrument is effectively widened, and the device has very strong universality.

The invention relates to a microscope system, in particular to a confocal microscope system of a short-wave infrared band. The system comprises a bright / dark field microscopy subsystem, a photon emission microscopy subsystem, a short wave infrared laser scanning confocal microscopy subsystem, a fluorescence confocal microscopy subsystem and a control module. According to the system provided by the invention, the short-wave infrared fluorescence lifetime curve can be obtained through the electro-luminescence emission and / or photoluminescence emission of the semiconductor device in the integrated circuit, so that the defect type of the semiconductor can be judged. Besides, the system adopts a multi-subsystem optical path multiplexing structure in structural design, short-wave infrared fluorescence generated by exciting a defect or a failure point is collected while observation is facilitated, high integration level is achieved, and observation, positioning and failure analysis of the defect or the failure point can be achieved only by using a single system provided by the invention.

The invention discloses a copper-chromium alloy contact part and a preparation method thereof, and belongs to the technical field of contact material processing. The preparation method comprises the steps that a substrate is installed, a cursor is printed on the substrate, and the cursor is consistent with the bottom face of a copper-chromium alloy contact target part in specification; bonding the connecting surface of the base body on the substrate to obtain a connected material; the connecting surface is matched with the cursor on the substrate; the connected material is fixed in a printing bin, infrared laser printing is conducted on the printing face of the base body according to preset laser additive manufacturing parameters, and a copper-chromium alloy contact part printing piece is obtained; and the copper-chromium alloy contact part printing piece is taken out to be subjected to solid solution heat treatment and separation, then groove position and inner hole machining is carried out, and a copper-chromium alloy contact target part is obtained. By means of the method, the high-strength and high-compactness copper-chromium alloy contact can be obtained.

The invention belongs to the technical field of electronic packaging defect detection, and particularly discloses a semiconductor packaging welding spot defect detection system and a detection method thereof.The system comprises an infrared excitation module and an ultrasonic signal processing module; a to-be-detected packaging sample wafer is arranged on a laser emergent light path of the infrared excitation module during detection, and is positioned in a detection focus area of the ultrasonic signal processing module; the infrared excitation module scans a to-be-tested packaging sample wafer by using the output infrared laser so as to thermally excite the internal structure of the to-be-tested packaging sample wafer and primarily generate an ultrasonic signal; when the infrared excitation module scans, the ultrasonic signal processing module synchronously detects a first ultrasonic signal generated by each scanning position point on the to-be-detected packaging sample wafer, and determines a welding spot defect detection result of the to-be-detected packaging sample wafer based on the first ultrasonic signal of each scanning position point. According to the invention, the precision and sensitivity of semiconductor packaging welding spot defect detection can be effectively improved.

According to the sighting telescope for detecting the unmanned aerial vehicle and the control method of the sighting telescope, a view field area is scanned mainly through active narrow-band near-infrared laser, remote detection and discovery of peeping photoelectric equipment of the unmanned aerial vehicle can be achieved, and the sighting telescope is small in system size and low in cost. According to the main technical scheme, the sighting telescope of the detection unmanned aerial vehicle is characterized in that a laser emitting module is used for emitting detection laser; the imaging assembly is used for acquiring image information; the main control module is connected with the laser emitting module, the imaging assembly and the display module, the main control module is used for controlling the laser emitting module to emit laser and extracting unmanned aerial vehicle information according to the image information, and the display module is used for displaying according to the image information and the unmanned aerial vehicle information. The invention is mainly used for laser detection.

The invention relates to the technical field of gas leakage monitoring, and discloses an industrial park gas leakage positioning laser on-line monitoring method, which comprises the following steps of: 1, superposing a sawtooth wave signal generated by a scanning signal generation circuit on a driving current generated by a current control circuit, periodic scanning of the output wavelength of the semiconductor laser is realized, and the output wavelength covers the absorption spectral line of the target gas; 2, light beams output by the semiconductor laser are divided into two paths through an optical fiber beam splitter, the light power ratio is 1: 9, and the low-power path penetrates through the calibration pool to obtain a calibration spectrum signal; according to the industrial park gas leakage positioning laser on-line monitoring method provided by the invention, an infrared laser spectrum open type long optical path detection technology and a multi-optical path gas two-dimensional distribution inversion algorithm are combined to obtain horizontal plane two-dimensional distribution data of target gas concentration above the area, and reliable indication of gas leakage positioning can be provided.

The invention relates to an image processing method based on AI, and the method comprises the following steps: collecting RGB, infrared and laser radar multi-mode images, integrating environment sensor data, enabling 2D images, 3D point clouds, video streams and environment parameters to be compatible, improving the definition of low-quality images in real time based on a low-illumination adaptive network, and improving the image quality in real time. Simulating different noise and shielding conditions by using a GAN generative adversarial network, and aligning timestamps of multi-source data and a space coordinate system based on self-supervised learning; and in combination with a super Ethernet transmission technology, low-delay multi-node data synchronization is realized, and collaboration of edge end real-time processing and cloud deep analysis is supported. Compared with a traditional method, the real-time processing speed is increased by 5 times, the industrial defect detection false alarm rate is reduced by 30%, cloud dependence is reduced through edge calculation, the hardware cost is reduced by 40%, the limitation of a single scene is broken through through a dynamic architecture, cross-modal fusion and industry customization design, and the industrial defect detection method has good application prospects. And an innovative path with universality and vertical depth is provided for AI image processing.

The embodiment of the present application provides an aluminum-copper dissimilar metal composite laser welding method and an aluminum-copper welding joint, which relates to the field of laser welding technology. The aluminum-copper dissimilar metal composite laser welding method of the embodiment of the present application includes the following steps: S1, stacking and relatively fixing aluminum metal plates and copper metal plates to obtain parts to be welded; S2, combining blue laser, point infrared laser and ring infrared laser, and focusing them to the welding position on the surface of the parts to be welded to form a composite laser beam; S3, welding the parts to be welded in an oscillating manner by keeping the composite laser beam. The aluminum-copper dissimilar metal composite laser welding method and the aluminum-copper welding joint of the embodiment of the present application can reduce the porosity in the weld and improve the mechanical properties and ductility of the weld.

The invention discloses an infrared dual-band single-photon laser radar imaging system, and belongs to the field of laser radar detection. The system comprises an infrared dual-band light source, a beam splitter, a first delay line, a light splitting module, a transceiver module, a frequency up-conversion module, a photoelectric detector, a single-photon detector, a signal acquisition module and a signal processing module. The infrared dual-band light source generates near-infrared and intermediate-infrared pulse laser; near-infrared laser is used for near-infrared detection, frequency up-conversion pumping and initial signals after passing through a beam splitter, intermediate-infrared laser is used for intermediate-infrared detection, intermediate-infrared detection signal echoes are subjected to time domain gating and frequency up-conversion by near-infrared pumping signals and then injected into a single-photon detector together with near-infrared detection signal echoes through time division multiplexing, and the intermediate-infrared detection signal echoes and the near-infrared detection signal echoes are subjected to frequency up-conversion. And detection imaging is realized through signal acquisition and processing. According to the invention, the weak target detection imaging capability of the single-photon laser radar in environments of gas, strong background noise and the like can be improved, and the multi-band sensing capability of the radar on target characteristics is improved.

The invention provides a system and a method for automatically optimizing the power of a frequency doubling laser, and relates to the technical field of laser. The high-temperature frequency doubling furnace comprises an LBO crystal and a heating sheet, the LBO crystal is used for carrying out high-temperature frequency doubling on laser emitted by the infrared laser, and the heating sheet is used for heating the LBO crystal; the dichroic mirror is used for transmitting the frequency-doubled laser and reflecting and filtering the non-frequency-doubled laser; the spectroscope is used for dividing the frequency-doubled laser into reflected light and transmitted light; the power meter is used for measuring the power of the reflected light; and the temperature controller is used for controlling the heating plate to heat the LBO crystal according to the reflected light power fed back by the power meter so as to adjust the temperature of the LBO crystal and enable the power of the reflected light to fluctuate within a preset range. According to the method, the frequency doubling power of the laser subjected to high-temperature frequency doubling through the LBO crystal can be kept stable and is not influenced by environment temperature fluctuation.

The invention discloses an equipment welding method and system in a space environment, equipment and a medium, relates to the technical field of space welding, and solves the problem of camera overexposure caused by strong light reflection by setting an exposure mode of an HDR camera into a short exposure mode to shoot an image on a sunny side. Meanwhile, welding arc light and metal surface reflection light are extracted by using a multispectral sensor, so that the metal reflection light and the welding arc light are distinguished; the exposure mode of the multi-angle camera set is set to be a long exposure mode on the shady face, infrared laser is matched to irradiate the welding position to shoot images, the image brightness is continuously enhanced, meanwhile, a thermal imaging sensor is used for recognizing the images, and therefore the problem that equipment generates low-temperature deformation during low illumination is solved; therefore, the welding seam position of the sunny side can be identified according to the position of the welding arc light, the welding seam position of the shady side can be identified through brightness compensation on the shady side, meanwhile, the welding problem of the sunny side and the shady side is solved, and the welding precision in the space environment is improved.

The invention discloses a de-bonding device, a bonding method and a de-bonding method. The de-bonding device comprises a laser source for providing infrared laser for performing de-bonding through a carrier silicon wafer; the galvanometer is used for transmitting the infrared laser to the first surface of the carrier silicon wafer and irradiating a bonding layer through the carrier silicon wafer, and the galvanometer is used for de-bonding the carrier silicon wafer and a device according to a target scanning speed by adjusting the laser frequency, and the device is bonded on the second surface of the carrier silicon wafer through the bonding layer, and a laser spot generated by a next pulse corresponding to the target scanning speed is next to a laser spot generated by a previous pulse and is not overlapped with the laser spot generated by the previous pulse. According to the invention, nondestructive de-bonding can be carried out on the permanently bonded silicon wafer, so that the separated silicon wafer can be reused, subsequent processing is facilitated, the permanent bonding de-bonding efficiency can be improved, and the overall size of de-bonding equipment is reduced.

The invention discloses a short-long wave laser hybrid welding method for aluminum alloy, and belongs to the field of laser welding. The method comprises the following steps: firstly, treating the surface of the aluminum alloy by adopting short-wavelength laser as a pretreatment laser source to enable the surface of the aluminum alloy to be in a molten state; according to the method, aluminum is pre-melted, then long-wavelength laser is adopted for welding, due to the fact that the reflectivity of the aluminum to the infrared laser in the liquid state is remarkably reduced, the pre-melting step creates conditions for follow-up long-wavelength infrared laser welding, the absorption rate of the infrared laser is remarkably improved, and loss of laser energy is reduced; according to the process, the utilization rate of welding energy is optimized and the welding quality is improved by utilizing different heating effects of lasers with different wavelengths on the surface of the aluminum alloy.

The invention discloses an ultra-long-distance infrared laser module supporting frame with a vibration-proof structure, and particularly relates to the field of laser modules, the ultra-long-distance infrared laser module supporting frame comprises a linear driving mechanism, the output end of the linear driving mechanism is provided with a vibration-proof adjusting mechanism, the vibration-proof adjusting mechanism comprises a first supporting frame, and the first supporting frame is provided with a rotatable second supporting frame; a rotatable mounting seat is arranged on the second supporting frame and used for mounting a generator module, and the angle of the output end of the generator module is adjusted through rotation of the mounting seat, so that the output end of the generator module vertically irradiates the water bottom all the time. By arranging the anti-vibration adjusting mechanism, the angle of the generator module is adjusted through swinging of the first supporting frame, the second supporting frame and the mounting base, the anti-vibration performance of the generator module can be improved, the output end of the generator module can perpendicularly irradiate the water bottom all the time, imaging integrity and coherence in the data acquisition process are ensured, and the data acquisition efficiency is improved. And the accuracy of imaging data is improved.

The invention provides an infrared spectral signal acquisition system and method.The system comprises a light path system, a main control computer, an intermediate infrared laser, a laser vibration meter and a sample displacement table, the intermediate infrared laser, the laser vibration meter and the sample displacement table are electrically connected with the main control computer, and the intermediate infrared laser is used for emitting intermediate infrared pulse laser which irradiates the surface of a to-be-measured sample through an intermediate infrared light path; a photo-thermal vibration signal is generated; the laser vibration meter is used for emitting vibration measurement laser, irradiating the vibration measurement laser to the surface of the to-be-measured sample through a vibration measurement light path and receiving a returned vibration signal; and the main control computer is used for adjusting laser signal parameters of the intermediate infrared laser and the laser vibration meter, controlling the sample displacement table to move and performing signal analysis processing on vibration signals acquired by the laser vibration meter. According to the invention, the laser vibration meter can detect the infrared spectrum signal, and the detection sensitivity of the sample surface signal is improved.

The invention discloses a preparation method of copper-based composite powder with high infrared laser absorptivity and a reaction device of the copper-based composite powder, and belongs to the technical field of metal additive manufacturing. The preparation method of the copper-based composite powder comprises the following steps that copper powder is subjected to acid pickling pretreatment, Cu2O-coated Cu powder is prepared through air suspension dynamic etching, the Cu2O-coated Cu powder is purified, and the prepared composite powder is of a core-shell structure and comprises a copper core and a cuprous oxide modified shell wrapping the surface of the copper core; by means of the structure, the absorptivity of the copper powder to near-infrared laser of 1064 nm and the like can be remarkably improved to 30% or above, and therefore the problems that pure copper is poor in melting and multiple in forming defect due to high reflectivity in laser additive manufacturing are effectively solved. The composite powder can be directly used for existing selective laser melting or directional energy deposition equipment, has great significance in achieving high-density copper part forming under medium power, and is convenient to prepare, low in cost and high in practicability.

The invention discloses a brush wire rigidity detection device for an aero-engine brush seal, belongs to the technical field of aero-engine seal part testing devices, and solves the problem of accurate detection of the brush wire rigidity of the brush seal. Comprising a high-precision annular base (with a sliding rail), a three-axis displacement adjustable sliding block assembly and a bimodal displacement monitoring system composed of a high-speed microscopic vision acquisition module and an infrared laser displacement sensing device. A high-pressure sealed cabin is arranged on the periphery of the base, an intelligent pressure applying mechanism based on the cam-sliding block principle is arranged in the center of the base, a servo motor drives a cam disc to convert rotary motion into high-precision radial displacement, and a force sensing module and a safety gap are integrated to form pressure closed-loop control. The sample fixing device is compatible with samples with different diameters through adjustment of an electrodeless light ring, and a high-frequency vibration exciter simulates a working environment. Force is applied through the pressure applying mechanism, displacement is monitored through the bimodal system, and the rigidity of the brush wire is accurately measured.

The invention discloses an inversion method for obtaining an N2O gas volume mixing ratio profile based on a short-wave infrared laser occultation detection technology. The inversion method comprises the following steps: calculating a short-wave infrared atmospheric refractive index profile at the center position of an N2O gas absorption spectral line; calculating a collision parameter profile according to the short-wave infrared atmospheric refractive index profile, respectively calculating atmospheric transmittance profiles of an N2O gas absorption spectral line and a reference spectral line based on normalized energy data of infrared laser occultation detection, and executing Abel integral inverse transformation on a difference value between the atmospheric transmittance profiles to obtain an N2O gas absorption coefficient profile; converting the N2O gas absorption coefficient profile into an N2O gas initial volume mixing ratio profile; and by taking the N2O gas initial volume mixing ratio profile as an initial value, carrying out analog calculation on an atmospheric transmittance profile after N2O gas absorption, constructing a cost function, carrying out iterative optimization, outputting an N2O gas volume mixing ratio profile, and obtaining a final inversion result. According to the method, the inversion precision is improved.

The invention discloses a metal oxide nano material as well as a preparation method and application thereof, and belongs to the technical field of laser preparation of metal oxides. According to the preparation method disclosed by the invention, the metal salt powder on the surface of the substrate material is treated by utilizing infrared laser, and under the action of the infrared laser, the infrared laser, the metal salt powder and the substrate material generate light-substance interaction including heat transfer and deformation, so that the metal salt powder and the substrate material are subjected to heat transfer and deformation; the metal salt powder is subjected to a chemical reaction, and a large amount of continuous nano metal oxide materials are generated on the surface of the substrate material; the metal oxide nano material obtained by the invention has the advantages of short laser processing time, high energy density, wide material application range and the like, and the product generated by laser processing has the advantages of good crystallinity, patterning and in-situ generation.

The invention provides a disinfecting and killing device and method for an intelligent closestool, and belongs to the technical field of intelligent terminals. The device comprises a shell and a circuit board arranged in the shell; the circuit board is integrated with an infrared laser detector used for emitting infrared laser to collect infrared information around the closestool; a UVC sterilization module; the MCU controller is used for receiving the infrared information, controlling a driving motor of the closestool to open a closestool cover and controlling the UVC sterilization module to be closed under the condition that it is determined that a person gets close to the closestool based on the infrared information, and controlling the driving motor to close the closestool cover under the condition that it is determined that the person leaves the closestool based on the infrared information. And the UVC sterilization module is controlled to start working. According to the sterilizing device of the intelligent closestool, manual operation is not needed, harm to personnel can be avoided, and therefore the technical problems that an existing sterilizing mode of the closestool is tedious in operation and not intelligent enough are solved.

A high-strength multi-functional coating with a multi-level structure, and a preparation method thereof are provided. In this application, a high-efficiency cladding method based on infrared laser-plasma synchronous compounding is adopted to prepare a micro-scale columnar crystal structure that is perpendicular to a substrate and serves as a pure thermally and electrically conductive channel, and to prepare submicro- and nano-scale ceramic reinforcement phases between columnar crystals, where the submicro- and nano-scale ceramic reinforcement phases are distributed along grain boundaries. The multi-level organizational structure of this application can simultaneously improve the hardness, wear resistance, and electrical and thermal conductivities of a cladding layer for a copper alloy and can improve the reliability of damage protection for a copper alloy component used in an extreme environment.