30 results about "Laser scattering" patented technology

A hovering and / or accompanying laser decoy, an attracting and deviating system comprising the decoy, the hovering and / or accompanying laser decoy comprising a laser, a decoy head and a carrier, wherein the laser comprises a connecting part of the laser and the decoy head, the decoy head comprises a laser scattering body, a base and a connecting part with the laser, the connecting part of the laser and the decoy head is arranged to meet the combination of the laser and the decoy head being connected as a whole, and the laser emitted by the laser irradiates into the decoy head and is partially or totally scattered by the laser scattering body therein. The decoy and the attracting and deviating system comprising the decoy are particularly suitable for laser guidance attracting and deviating protection of movable targets.

This invention provides a laser scattering prevention device that facilitates the installation and removal of protective coverings when removing rust, paint, and other materials using laser irradiation, and also enables the removal process to be carried out more efficiently. [Solution] A box-shaped structure 1 is constructed to enclose an object P and a worker Q who irradiates the object P with a laser. The box-shaped structure 1 has a rectangular top plate 1A. A pair of cover plates 1B are provided along both longitudinal edges of the top plate 1A in a bendable manner. A pair of reinforcing plates 1C are provided at both longitudinal ends of the top plate 1A in a bendable manner. A pair of opening / closing sheets 1D are provided on the lower side of the reinforcing plates 1C in an opening / closing manner. Connecting devices 2 are provided to connect each cover plate 1B and each reinforcing plate 1C. The box-shaped structure 1 is made self-supporting by the pair of cover plates 1B of the box-shaped structure 1 connected by the connecting devices 2. It is configured so that people can enter and exit the box-shaped structure 1 from the opening side covered by the opening / closing sheets 1D.

The utility model discloses a fire early warning system, including very early stage smoke detection device, multi sensor integrated device, infrared thermal imaging high definition camera and electric control device, very early stage smoke detection device includes air -suction type smoke detector and air sampling pipe network, air -suction type smoke detector built -in laser scattering detection unit, and through the air pump from air sampling pipe network continuous collection air sample, and air sampling pipe network is annular and is arranged on the top of energy storage container, multi sensor integrated device is installed in the battery pack inside, infrared thermal imaging high definition camera is used for identifying battery module surface temperature gradient anomaly, electric control device respectively with very early stage smoke detection device, multi sensor integrated device, infrared thermal imaging high definition camera electric connection, and with the backstage network connection, is used for according to multi sensor data fusion to establish the hierarchical early warning mechanism and sends to the backstage. The utility model technical scheme can promote the timeliness and accuracy of fire prevention and control.

The application discloses a switch cabinet multi-parameter integrated extremely early fire monitoring and early warning device, which comprises a pyrolysis particle sensor module, a gas sensing module and an intelligent control module, the intelligent control module is in communication connection with the pyrolysis particle sensor module and the gas sensing module, the pyrolysis particle sensor module comprises a laser scattering cavity, the laser scattering cavity is arranged at a downwind direction of an air duct, and the pyrolysis particle sensor module further comprises a gas driving component for blowing the gas in the air duct to the laser scattering cavity; a flow guide piece is arranged outside a preset distance of the downwind direction of the outlet of the laser scattering cavity, the flow guide piece is used for forming a rotational flow area for the blown air, and a gas sensor in the gas sensing module is located in the rotational flow area. The switch cabinet multi-parameter integrated extremely early fire monitoring and early warning device can consider the miniaturization of the overall volume and the timeliness and accuracy of early warning, is convenient to be installed in a smaller space in the switch cabinet, avoids the interference of particulate matters in the air, and improves the fire early warning accuracy through rapid analysis on multiple parameters.

The utility model discloses an electric mixer shell structure of built -in overheating protection device, related to mixer technical field, including electric heating stirring jar, the electric heating stirring jar top is equipped with the upper cover, the electric heating stirring jar one side is equipped with the controller, and the electric heating stirring jar is provided with the overheating protection anti -overflow subassembly, the utility model provides technical scheme, through setting overheating protection anti -overflow subassembly, specifically, through laser scattering sensor real -time monitoring the liquid level and bubble state of liquid in electric heating stirring jar, when detecting that liquid is because temperature is too high and leads to bubble expansion close to overflow, can timely feedback to the controller, realizes the early warning of overflow phenomenon, and the hollow cooling plate is cooled simultaneously to the expanded bubble of the top area in the jar, makes it cool, and from the root, inhibits bubble and overexpansion because of high temperature, forms "monitoring - cooling " linkage's anti -overflow mechanism, effectively avoids liquid overflow.

The application discloses a laser scattering-beta ray dual-mode dust concentration detection device and belongs to the technical field of dust concentration detection. The device comprises a dust concentration detection mechanism, a ray adjusting mechanism is arranged in the dust concentration detection mechanism, the dust concentration detection mechanism comprises an outer cavity, dynamic flow compensation components and reflux components are arranged on the upper and lower sides of the outer cavity, and air outlet adjusting components are arranged at the four ends of the reflux components. The adjusting components drive the adjustment of the inner cavity rotation, the positions of the beta ray incident port, the laser incident port and the single group incident port can be adjusted, the detection mode can be selected according to the requirement, when the beta ray incident port and the single group incident port correspond to the laser scattering module and the beta ray module respectively, the dual-module synchronous work can be achieved, the precision is improved through data complementary calibration, and the single module can be selected to adapt to different detection requirements through the single group incident port switching.

A kind of spaceborne laser radar multi-functional narrow-band filtering optical system and method, comprising: 1064nm channel and 532nm channel, with the function of the narrow-band filtering of 1064nm and 532nm dual-wavelength channel laser scattering echo, meet the needs of different wavelength laser common receiving optical system and APD detector, compact structure, high integration;With the function of testing the parallelism and transmittance of the whole machine transceiver of different wavelength channels without disassembling any assembled and adjusted component, the testing method is simple, suitable for whole machine testing;With the ability to cancel any wavelength channel arbitrarily, while keeping the auxiliary testing function of another channel unchanged, strong engineering applicability.

This invention relates to the field of coal mine safety production and occupational health protection technology, and discloses a dust monitoring and automatic dust suppression control system for coal mining environments, including a PM sensor, a central control unit, a dust suppressant spraying facility, a feedback optimization mechanism, and an electrical control system. The PM sensor is a high-sensitivity laser scattering sensor with automatic dust removal and temperature compensation functions, deployed at preset intervals to achieve real-time monitoring of dust concentration at multiple points. The central control unit, based on IoT and mechatronics technology, integrates data from multiple heterogeneous sensors such as dust concentration, temperature, and humidity to construct a dynamic spraying decision model with lithology identification capabilities, introducing a working condition correction coefficient α (α=k₁・S+k₂・R) to dynamically set a 4α mg / m³ trigger threshold. The dust suppressant spraying facility sprays environmentally friendly dust suppressant to form a fine mist that captures dust. The feedback optimization mechanism adjusts the spraying interval based on the concentration decay data after spraying. The electrical control system ensures safe operation through relay and contactor isolation design. This invention solves the problems of low efficiency, poor adaptability, water waste and easy equipment damage in traditional dust suppression methods, and achieves precise, efficient and safe dust control in coal mines, ensuring the health of workers and production compliance.

The utility model discloses a kind of distributed optical fiber temperature detection systems, including the sensing optical fiber being laid along the length direction of low temperature pipeline;The end of the sensing optical fiber is provided with laser light source and optical signal pulse amplifier, the laser light emitted by the laser light source enters the sensing optical fiber after amplification by the optical signal pulse amplifier, and raman scattering occurs at each position of the sensing optical fiber;The end of the sensing optical fiber is also provided with data acquisition module, APD photoelectric conversion module and wave division multiplexer, laser scattering in the sensing optical fiber will form the echo signal of different wavelength stokes light and anti-stokes light, the echo signal of the sensing optical fiber is converted after passing through the wave division multiplexer and the APD photoelectric conversion module, enters the data acquisition module, and the data acquisition module obtains the light intensity signal of at least two beams of light, based on the principle that light intensity is different under different temperatures, the temperature condition of reflection point is obtained by analyzing light intensity change.

The application provides an intelligent filtering device for domestic sewage treatment and relates to the field of domestic sewage. The pot bottom burnt black scale removing device based on automatic cleaning comprises a base, a first filtering assembly is installed on the top of the left side of the base, a sewage pool is arranged on the top of the base, the sewage pool is connected with the first filtering assembly through a pipeline, and second filtering assemblies are arranged in the sewage pool at both ends. Through the setting of the dynamic sensing module and the filter screen adjusting module capable of stepless adjustment of the aperture, a filtering self-adaptive control mechanism based on the suspended matter concentration feedback is established. The laser scattering type suspended matter sensor in the dynamic sensing module collects the water inlet concentration in real time, the filter screen dynamic adjusting unit drives the stepping motor to adjust the effective filtering aperture according to the concentration signal, the intelligent adjustment of high-concentration small-aperture reinforced interception and low-concentration large-aperture improved flux is realized, the filter screen clogging frequency is significantly reduced, and the filtering efficiency under different water quality conditions is ensured.

A kind of detection method and system of belt discharge port material blocking based on visual identification, current frame video image is obtained by real-time acquisition of belt conveyor discharge trolley discharge video, image processing is carried out;By installing suitable light source system, the target detection of accumulated material is converted into the detection of light;After image processing to current frame image, when the laser accompanied by material surface rising is detected in target detection area due to the high material surface caused by material accumulation, return the detection result of material blocking, and detect the laser scattered by smoke dust in target detection area, filter out the detection interference caused by dust raising, and notify the operator in time by alarm mode.The present application realizes the automation and unmanned function of real-time dynamic detection of belt conveyor discharge trolley state, can improve detection efficiency and save manpower.

This invention discloses a laser weeding device based on a drone platform, belonging to the technical field of weeding equipment. The device includes a mounting frame, a connecting plate rotatably connected inside the moving block, and a leaf-removing assembly rotatably connected between the other ends of the connecting plates located on both sides of a limiting rod. This assembly forms a closed working chamber to physically isolate laser scattering. A laser emitter is installed in the center of the leaf-removing assembly. By employing the leaf-removing assembly, this invention physically isolates laser scattering, avoids interference from airflow and dust, and solves the problem of vegetation obstructing the laser from reaching the roots of weeds. It offers advantages such as precise weeding, safety and efficiency, compatibility with drone platforms, and strong versatility.

The present application relates to coal conveying system dust control technical field, specifically to a kind of coal conveying system dust concentration monitoring and evaluation system, including dust concentration detection module, install multiple explosion-proof dust concentration detector at the key position of coal conveying system, detect using laser scattering principle, with RS485 industrial bus and standard three-wire system 4-20mA output interface, according to environmental dust concentration regular cleaning;Gas detection module, install three-in-one online gas detector and smoke alarm in workshop, all are explosion-proof, for monitoring gas concentration and fire;Data transmission module, using local area network wireless transmission module, the present coal conveying system dust concentration monitoring and evaluation system, in the key position of coal conveying system reasonable layout monitoring point, using advanced detection technology and stable transmission mode, realize the comprehensive, real-time, accurate monitoring to dust concentration and gas concentration, provide reliable data support for subsequent analysis and processing.

This invention discloses an air purification device for building decoration and renovation, belonging to the field of air purification technology. The device includes a multi-source environmental sensing module, a central intelligent control module, a composite purification execution module, an exhaust coordination module, and a human-machine interaction and remote monitoring module. The multi-source environmental sensing module collects pollutant concentrations through a laser scattering particulate matter sensor, an electrochemical formaldehyde sensor, and a metal oxide TVOC sensor, and transmits the pre-processed data to the central intelligent control module. The central intelligent control module generates instructions based on an adaptive collaborative control algorithm to control the four-stage purification process of the composite purification execution module and the operation of the exhaust coordination module. The composite purification execution module adopts a series structure of primary filtration, high-efficiency air filtration, photocatalytic decomposition, and modified activated carbon adsorption. Each module is connected via a controller local area network bus or wireless fidelity communication, automatically switching purification modes according to the decoration stage to achieve coordinated purification and exhaust.

The application provides a protective optical fiber laser welding machine for sensor welding, and relates to the field of welding machines.The machine body is provided with a moving assembly, the top end of the moving assembly is provided with an adjusting assembly, the top end of the adjusting assembly is provided with a clamping assembly, the top end of the clamping assembly is provided with two first protective pieces, the outside of the adjusting assembly is provided with a turning assembly, the top end of the turning assembly is provided with two second protective pieces, and the inside of the turning assembly is provided with a limiting assembly.The first protective pieces and the second protective pieces are arranged, so that the welding position is surrounded by the first protective pieces and the second protective pieces during welding, laser scattering and radiation can be blocked, and molten metal can be prevented from splashing out, thereby improving the safety and reliability during welding.

This invention provides a method and apparatus for laser debonding, belonging to the field of semiconductor technology. The method includes the following steps: providing a temporary bonding body for a wafer, the temporary bonding body comprising a silicon carrier, an interposer, a carbon-rich thin film, a bonding layer, and a wafer stacked together; in a vacuum environment, irradiating the temporary bonding body with an infrared pulsed laser, causing interface peeling at the carbon-rich thin film, thus completing the laser debonding between the silicon carrier and the wafer. This invention uses a carbon-rich thin film as the laser release layer, reducing costs. It possesses broad-spectrum, high-efficiency absorption characteristics in the infrared laser band, enhancing laser scattering and light-trapping effects, and improving laser energy absorption efficiency. By performing laser debonding in a vacuum environment, impurities such as microparticles generated during interface peeling can be removed from the cavity, avoiding wafer contamination and interference with the laser path, thus improving the cleanliness, stability, and overall device yield of the debonding process.

The application belongs to the technical field of Zeta potential measurement, and relates to a Zeta potential measurement device based on a nanoparticle tracking technology, which comprises a metal sandwich laser table, a detachable cover plate type sample pool fixed on the metal sandwich laser table by screws and a magnetic attraction assembly for conveniently supplying power to electrodes; the metal sandwich laser table has a metal sandwich glass structure composed of two layers of glass sandwiching a middle metal plating layer, which is used for isolating samples to ensure that the metal plating layer is not corroded; the detachable cover plate type sample pool is provided with a cavity capable of containing samples in the bottom surface direction and is convenient to clean; when the magnetic attraction assembly is powered on, the positive and negative electrodes located on both sides of the glass window apply an electric field at both ends; the nanoparticles in the measured sample scatter laser to form scattered light; at this time, the particle motion trajectory analysis can obtain the Zeta potential measurement result; the device is convenient to measure, has small measurement error, and can be widely used in the fields of biomedicine, drug development, nanomaterial science, environmental science, chemical engineering and the like.

The present disclosure relates to methods of processing single crystal silicon ingots to improve laser scattering ring / nucleation patterns. The present disclosure discloses a method for reducing the size and density of defects in single crystal silicon wafers. The method involves subjecting a single crystal silicon ingot to annealing prior to wafering.

The application provides a kind of aircraft surface frost detection method based on laser thickness measurement and visual image analysis, which comprises the following steps: S1, build aircraft surface frost detection system;S2, train and build image feature reference library under ice-free state;S3, initialize setting to detection system;S4, calculate frost layer thickness;S5, collect aircraft surface image and calculate abnormal value;S6, collect image of ground area and calculate abnormal value;S7, normalize and weighted fusion calculation are carried out to multi-source data;S8, judge whether the fusion value is greater than the preset threshold, if the fusion value is greater than the preset threshold, there is ice and frost in the current detection area of aircraft surface, and the detection system will trigger defrosting prompt alarm and defrosting. The application constructs a multi-modal fusion scheme based on laser scattering model and visual image anomaly detection algorithm, considers the complex mechanism and optical properties of frost layer formation, this method has higher robustness to environmental interference, and can trigger alarm and deicing operation in time, effectively reduces the burden of aircraft maintenance personnel, enhances the safety and efficiency of aircraft ground operation.

The utility model relates to the technical field of soybean milk production, concretely to laser scattering type monitor of foreign matter detection, including bottom plate, the bottom plate top is fixed with monitoring cylinder, installs on the inner wall of monitoring cylinder laser emission module and a plurality of scattering light receiving module, just the data processing and analysis module are installed on the bottom plate top surface, still include: cleaning mechanism, set up in monitoring cylinder inside, is used for the cleaning of monitoring cylinder's inner wall, the cleaning mechanism includes brush ring, a plurality of bristles fixed on the circumference outer wall of brush ring, install on the bottom plate top surface and be used for providing cleaning liquid to brush ring's pump body, install on the bottom plate top surface and be used for driving brush ring and lift electric cylinder, the utility model discloses through setting up cleaning mechanism, including brush ring, bristle, pump body, electric cylinder, atomizing spray head etc. component, solved the problem that the inner wall of monitoring cylinder was influenced after the adhesion of soybean milk and followed the detection result and the bacteria breeding of soybean milk, and does not need manual cleaning, saves manpower and time.

The present application relates to the technical field of medical equipment monitoring, and particularly relates to a wireless temperature and humidity monitoring system and method for medical refrigerators. The system of the present application comprises a distributed wireless sensing module, an edge data processing module, a cloud monitoring platform, an intelligent early warning module and a blockchain storage module. The distributed wireless sensing terminal adopts a cellular distribution mode, integrates a high-precision temperature and humidity sensor, a laser scattering compensation component and an RFID-WiFi dual-mode communication unit, realizes global accurate collection and reliable transmission; the edge data processing module generates a three-dimensional temperature and humidity distribution model through space-time calibration and temperature field reconstruction, and predicts potential equipment failures; the intelligent early warning module performs hierarchical early warning and links the standby refrigeration unit; the blockchain storage module stores all data on the chain to ensure that the data cannot be tampered with. The present application is suitable for intelligent temperature and humidity monitoring and compliance control in medical material storage scenes such as vaccines, blood products and biological reagents.

A kind of laser direct writing photoetching device and method, device includes mobile platform, laser control board, computer, exposure unit placed on mobile platform, camera unit connected with computer, platform controller, platform controller is connected with the controlled end of drive unit;Exposure unit includes closely arranged laser connected with laser control board signal, convex lens array, rotating mirror or galvanometer, F-θ scanning field lens, rotating angle drive of rotating mirror or galvanometer, the scattering light emitted by fiber array in closely arranged laser scatters to convex lens array, converts into multipath parallel light, then is irradiated to rotating mirror or galvanometer, again is focused as the light spot corresponding to each laser diode LD in closely arranged laser by F-θ scanning field lens, rotating mirror or galvanometer moves under the control of corresponding rotating angle drive.This application is suitable for any exposure requirement, whether it is fine line large energy exposure or mixed wave exposure, just by changing the type of laser diode LD, quantity can meet the requirement.

This application provides a laser cutting device and method for repairing coal mining machines, relating to the field of coal mining machine repair. To address the problem in existing technologies where dust particles obstruct the output of the laser head during cutting and repairing coal mining machine parts, leading to laser scattering and uneven cutting, thus affecting the appearance quality of the cut parts, this application employs a cleaning mechanism. This mechanism, through the airflow generated by the rotation of a V-shaped plate, creates a comprehensive airflow protective shield around the laser head. This prevents dust from adhering to the output of the laser head from all directions, reducing dust obstruction and improving the cutting quality. Furthermore, the cleaning mechanism solves the problem of excessively high laser head temperature leading to reduced lifespan in existing technologies, and also addresses the problem of damage to the laser head caused by external objects impacting it.

Since the transfer of an SERS induced structure according to an embodiment of the disclosure uses the interfacial energy between a water surface and a thin film substructure, it is possible to perform the transfer intact without any damage to the structure. At this time, the SERS induced structure is transferred onto a non-uniform and rough surface, wherein since the transfer structure covers the surface, various types of flexible materials may be used. As a result, Raman signals and laser scattering are minimized, thereby increasing signal reproducibility, and various physical properties of a transfer target may be applied to rubbing techniques.

The application relates to the field of wood-plastic board processing, and discloses a laser detection method and device for wood-plastic boards, the method comprising: acquiring a short-wave laser scattering matrix and a long-wave laser scattering matrix of a surface of a wood-plastic board to be detected; the short-wave laser scattering matrix and the long-wave laser scattering matrix have the same spatial resolution; performing spatial position registration on the short-wave laser scattering matrix and the long-wave laser scattering matrix to generate a double-channel feature tensor; inputting the double-channel feature tensor into a pre-trained feature fusion network to perform feature extraction to obtain a differential attention feature map; extracting a defect response extreme point based on the differential attention feature map; and generating a surface defect coordinate sequence of the wood-plastic board to be detected according to the defect response extreme point.

The present application relates to the technical field of optical materials, and particularly relates to a laser scattering body based on biomass fiber and a preparation method and application thereof.The orientation degree of the laser scattering body is less than or equal to 15.0%; the laser scattering body comprises a fluorescent material, biomass fiber and transparent liquid resin; the biomass fiber is fiber from which lignin or a lignin chromophore group is removed; the biomass fiber has a porous structure inside; the diameter of the biomass fiber is 0.1-100 microns, the length is 0.5-5 mm, and the length-diameter ratio is 10-500.The laser scattering body is prepared by selecting biomass fiber of a specific size and fluorescent material and transparent liquid resin, so that the orientation degree of the laser scattering body is less than or equal to 15.0%, and the scattering effect and uniform illumination effect of the laser scattering body are improved.

This application provides a multi-source heterogeneous data fusion method for battery swapping systems, applied to the field of automotive power battery safety monitoring technology. The method controls the directional folding of the thin-walled metal lip at the male end of the battery swapping port to form a Hertzian contact interface, and generates a self-calibrated acoustic attenuation ratio based on the attenuation ratio of transverse and longitudinal composite ultrasonic signals. It induces particle agglomeration by forming transient vortex rings through pulsed airflow and generates an inhalable blockage index using mixed laser scattering signals. It also induces micro-vaporization of the refrigerant through reverse pumping of a liquid cooling system micro-pump, and generates an equivalent overheat loss based on broadband thermoacoustic signals. Time-domain alignment and fusion decisions are performed on the above three parameters. When all three continuously exceed a threshold, a safety trigger command is generated, driving the aluminum foil rupture disc to break and the shape memory alloy retaining ring to undergo phase transformation, collaboratively completing dust removal and structural accommodation. This invention achieves multi-dimensional collaborative monitoring and active safety protection of the battery system's mechanical connections, heat dissipation channels, and cooling efficiency.

This invention provides an integrated intelligent monitoring device for dust and noise at municipal construction sites, comprising an inspection vehicle, a drone monitoring terminal, and a central control module. The inspection vehicle's front body houses a lifting mechanism and the central control module. A laser-scattering dust sensor and a wind speed sensor are fixed to the top of the lifting mechanism. A visual recognition camera is fixed to the front of the front body, and a first noise sensor and a second noise sensor are fixed to the sides of the front body, respectively. The drone monitoring terminal is located inside the rear body of the inspection vehicle. The drone monitoring terminal is equipped with a miniature dust detector, an altitude sensor, a second wireless communication module, and a flight control module. The drone monitoring terminal is wirelessly connected to the central control module and is used to vertically ascend and detect the dust concentration in the air under the control of the central control module. This invention integrates a walking mechanism, a lifting mechanism, and wireless communication, adapting to complex construction environments, reducing manual intervention costs, and improving the level of monitoring automation and data accuracy.