360 results about "Path system" patented technology

The invention relates to the technical field of photovoltaic equipment cleaning, and discloses an autonomous path planning system and method based on a photovoltaic cleaning robot. The system comprises an environment sensing module which is used for collecting three-dimensional point cloud data on the surface of a photovoltaic panel and reducing noise; the path planning module is used for constructing a topological map and optimizing a global path; the obstacle detection module is used for identifying obstacles and extracting physical attributes of the obstacles; the dynamic adjustment module is used for analyzing path conflicts and dynamically re-planning; and the execution control module generates a robot motion instruction. According to the method, through cooperative work of the modules, efficient path planning and cleaning work of the photovoltaic cleaning robot in a complex environment are achieved. Compared with a traditional cleaning mode, the cleaning efficiency and quality are improved, the cost is reduced, the adaptability of equipment to a complex environment is enhanced, and powerful technical support is provided for development of the photovoltaic industry.

The invention provides an unmanned aerial vehicle pose visual angle optimization method and system for fracture refined shooting. The method comprises the steps of performing fracture detection and boundary extraction on a coarse inspection image; recovering a camera track and sparse point cloud based on multi-view three-dimensional reconstruction, carrying out back projection and estimating a normal vector of a crack surface; constructing a shooting spherical shell with limited inner and outer radiuses by taking the crack point as a center, and generating a view cone and spherical shell intersection region allowed to be shot as a candidate set in combination with a normal vector; sampling in the candidate area to generate a plurality of candidate shooting points, and synchronously resolving the flight and holder integrated pose of the corresponding unmanned aerial vehicle; constructing a multi-target cost function including path length, attitude, pan-tilt angle and shooting error, and generating an optimal shooting point sequence and an inspection path through an optimization algorithm; the system realizes fine, efficient and automatic shooting of cracks in a complex structure environment through cooperation of multiple modules, and effectively improves the imaging quality and the detection precision.

The utility model discloses a liquid drop preparation instrument and an antibody screening device, and the liquid drop preparation instrument comprises a chip assembly which comprises a liquid drop generation chip and a liquid drop sorting chip, and the liquid drop sorting chip comprises a sorting electrode; the sample table is used for placing at least one of the liquid drop generating chip and the liquid drop sorting chip; the optical module is optically coupled with the sample table and is used for providing incident light to the sample table and collecting an optical signal generated by the biological sample or the liquid drop in response to the incident light; the liquid path system is in operable conduction with the chip assembly and is used for pumping a solution to the liquid drop generating chip or the liquid drop sorting chip; the control circuit can selectively call a first group of control parameters or a second group of control parameters, the first group of control parameters comprises a first control instruction, and the second group of control parameters comprises a second control instruction; the control circuit comprises a feedback control sub-circuit used for controlling the sorting electrodes. According to the liquid drop preparation instrument, liquid drop preparation can be carried out, and needed liquid drops can be rapidly sorted out.

Disclosed in the present invention is a photometric stereo-based device for rapidly detecting surface features of an object, capable of rapidly acquiring a plurality of images meeting the requirements of a photometric stereo algorithm. The device comprises a light emitting assembly, an acquisition assembly located above the light emitting assembly, and a data processing module; the acquisition assembly comprises a light path system and a camera group; the light path system comprises: a beam splitting prism group used for splitting reflected light from the surface of an object into a plurality of beams of light and respectively outputting the plurality of beams of light in different preset directions to form images to be processed, and a plurality of bandpass filters correspondingly arranged on the output sides of the plurality of beams of light used for forming said images, wherein the central wavelengths of the bandpass filters are respectively configured to be different wavebands of the reflected light from the surface of the object; the camera group comprises a plurality of cameras which are arranged behind the bandpass filters in a one-to-one correspondence mode and acquire filtered light beams; and the data processing module receives image information sent by the cameras, and performs compensation and photometric stereo reconstruction on the image information, so as to obtain surface features of the object. Further disclosed is a method implemented on the basis of the device.

The invention belongs to the technical field of biological liquid sample detection, and particularly relates to a liquid path system for sample suction quality detection and an anomaly detection process. A liquid path system for sample suction quality detection comprises a capacitance detection module, an injector, a pressure detection module, a cleaning valve, a cleaning pump, a degassing module and a water tank which are connected in sequence, and the capacitance detection module, the injector, the pressure detection module, the cleaning valve, the cleaning pump, the degassing module and the water tank are connected through pipelines. The method mainly solves the following problems: 1, the contradiction between the pressure monitoring range and the monitoring resolution; 2, when the sample is insufficient or bubbles are sucked, the difference between the suction pressure and the normal liquid suction pressure is small, so that misjudgment is easily caused; 3, misjudgment is easily caused by noise signal interference; 4, corresponding error monitoring mechanisms are lacked in other processes such as cleaning, sample adding and the like; and 5, monitoring is performed by excessively depending on a single mode, and the pressure is easily interfered in the testing process.

The invention belongs to the field of artificial intelligence and intelligent traffic systems, particularly relates to a path control system combining multi-modal perception and dynamic trajectory prediction, and aims to solve the problems of insufficient perception fusion, low trajectory prediction precision and control response lag in a complex dynamic environment. The system comprises a multi-modal perception fusion unit, a dynamic interaction modeling unit, a space-time coupling prediction unit, a risk field construction unit and an adaptive path generation unit. Multi-source sensor data are fused through confidence coefficient weighting, an interaction weight matrix under an attention mechanism is constructed, a future trajectory is predicted in combination with individual dynamics and a social force model, a four-dimensional space-time risk field is generated, and a minimum risk path is solved based on an improved fast marching algorithm. The system realizes sensing-prediction-control closed-loop cooperation, the end-to-end delay is less than 250 milliseconds, and the driving safety and comfort in a complex traffic scene are improved.

Systems and methods herein are for use with a Virtio standard and include at least one circuit to host a virtualizer component that enables different virtual machines (VMs), an accelerator driver, and a virtualizer interrupt moderation library, where the accelerator driver can be associated with an accelerator device. The accelerator driver can monitor interrupts associated with the different VMs to determine at least a current interrupt value and packet statistics that may be used by the virtualizer interrupt moderation library as a basis to provide an intended interrupt value to be used by the accelerator device for managing further interrupts to the different VMs.

The utility model discloses a high-precision digital slice Z-axis light path system based on rotary imaging, which comprises a vertical plate, and a camera, a barrel lens, a fluorescent mechanism, a panorama camera, a lifting lens and a whole set of light source are sequentially arranged on the same side of the vertical plate in the vertical axis direction to form a Z-axis light path; the barrel lens is arranged on the side wall of the upper part of the vertical plate, and the upper end part of the barrel lens is connected with a camera; the fluorescent mechanism is arranged on the side wall of the middle part of the vertical plate, the fluorescent mechanism directly faces the lower end part of the barrel lens, and the panoramic camera is arranged on the side part of the fluorescent mechanism; the lifting lens and the whole set of light source are sequentially arranged on the side wall of the lower part of the vertical plate; wherein the fluorescent mechanism comprises a rotatable rotating disc, a plurality of fluorescent assemblies are arranged on the rotating disc, and the rotating path of the rotating disc sequentially passes through the lower end portion of the barrel lens.

The invention discloses a modular sip transceiver assembly based on HTCC, and belongs to the technical field of satellite communication. The modular transceiver assembly mainly comprises two radio frequency front end sip modules, two secondary frequency conversion sip modules, two local oscillator carrier plate sip modules, a power supply and an FPGA control module. The whole assembly mainly comprises five radio frequency systems and four receiving channels which are completely the same and are almost consistent with the other transmitting channel in structure, modular design is adopted, a mature microwave substrate processing technology is combined with an existing micro-assembly process, and through an HTCC ceramic tube shell and a sip technology, surface mounting application of a microwave 3D module is achieved, and meanwhile light-weight and small-size design is achieved. According to the three-dimensional stacked packaging, various passive devices can be subjected to interlayer integration, the assembly integration level is greatly improved, an expected complete machine system can be verified more quickly and flexibly, especially for a multi-path system, only a single module needs to be used for testing in the earlier stage, and the three-dimensional stacked packaging module is suitable for various communication occasions.

The invention discloses a light path system based on a gas-filled hollow-core optical fiber, and the system comprises a spectrum broadening device which comprises a first gas extraction chamber, a gas inlet chamber and a second gas extraction chamber, the first gas extraction chamber and the second gas extraction chamber are located at the two ends of the gas inlet chamber respectively, and the first gas extraction chamber and the gas inlet chamber are separated through a first sealing part; the second air exhaust chamber and the air inlet chamber are separated through a second sealing piece; the spectrum broadening device is internally provided with a hollow-core optical fiber and is provided with at least one through hole penetrating through the pipe wall of the hollow-core optical fiber, the two ends of the hollow-core optical fiber penetrate through the first sealing piece and the second sealing piece respectively so that the two ends of the hollow-core optical fiber can be communicated with the first air suction chamber and the second air suction chamber respectively, and the through hole is located in the air inlet chamber. The two ends of the hollow-core optical fiber are subjected to air exhaust, so that the ionization rate and the self-focusing effect generated when the laser is output after the spectrum of the inflated hollow-core optical fiber is broadened can be remarkably reduced, the requirement for improving the power input of the laser is met, and a light path system can bear higher laser monopulse energy compression.

The invention discloses a plug-and-play Rydberg atom preparation device based on a three-photon absorption method, which comprises a laser generator, a laser input module, a laser detector, three frequency stabilization modules and a temperature and humidity control module, and is characterized in that the laser generator is used for preparing laser to be measured; the input module is used for transmitting and introducing laser; the saturated absorption frequency stabilization module, the electromagnetic induction transparent frequency stabilization module and the heating electromagnetic induction transparent frequency stabilization module all adopt a glass bonding technology to build frequency stabilization light paths; the laser detection device is used for detecting laser lines in the saturation absorption frequency stabilization module, the electromagnetic induction transparent frequency stabilization module and the heating electromagnetic induction transparent frequency stabilization module and locking the laser frequency corresponding to the specific wavelength. According to the invention, a frequency-stabilized light path is built by using a glass bonding technology, so that devices and the size are greatly reduced, and the integration level of a light path system is greatly improved; moreover, the degree of freedom of device adjustment can be reduced, and the reliability and stability of a laser frequency stabilization optical path are effectively improved.

The invention relates to the technical field of optical communication, in particular to a swing mirror optical machine device and optical communication equipment. The oscillating mirror light machine device comprises a rotary table, the rotary table comprises an azimuth axis system assembly, a pitch axis system assembly and a pointing mirror assembly, the azimuth axis system assembly is located above the pitch axis system assembly in the height direction of the oscillating mirror light machine device, and light does not pass through the azimuth axis system assembly; the support is provided with a connecting part extending outwards, and the azimuth shaft system assembly is hung on the connecting part; and the rear light path system is mounted on the bracket. By arranging the support, the azimuth axis system assembly of the rotary table is hung on the connecting part of the support, the azimuth axis system assembly is arranged above the pitch axis system assembly, and the whole light path does not pass through the azimuth axis system assembly, so that a light through hole does not need to be formed in the rotary table, and then the installation position of the azimuth axis system assembly does not need to be arranged on the basis of the light through hole; the overall radial size of the azimuth shaft system assembly and the rotary table can be greatly reduced, and the weight of the rotary table is reduced.

The invention relates to an AI intelligent management platform for maintenance of ship safety lifesaving emergency equipment. The AI intelligent management platform comprises a front-end function system and a rear-end storage system. The front-end function system comprises a sailor training module, an intelligent inspection module, a third-party maintenance supervision module and the like. Wherein the sailor training module adopts a panoramic VR camera to carry out live-action shooting on a scene on a ship, a virtual reality (VR) technology is applied to provide real scene boarding experience, sailors are helped to remotely realize immersive ship visiting, and a real ship environment is comprehensively understood; through the combination of videos and characters, skill training of sailors before on-ship work is provided. The sailors can remotely realize immersive ship visiting through the sailors training module, comprehensively understand the actual ship environment and remarkably improve the practical operation skills of the sailors; the personalized training path system customizes an exclusive training plan for each sailor through AI algorithm intelligent analysis according to the post demand, experience level and skill weakness of the sailor, and achieves the precision and high efficiency of training.

The invention relates to the technical field of centrifugal pump mechanical seal detection, in particular to a centrifugal pump mechanical seal air tightness pressure maintaining detection tool which comprises a base, a tool frame, a simulation mandrel and an air path system. By introducing a matching structure of the sliding core shaft and the conical sliding block, the conical sliding block is pushed by air pressure to axially move along the sliding core shaft, so that dynamic loading between the dynamic and static rings of the mechanical seal is realized. The design simulates the stress condition of the mechanical seal in an actual assembly state, and can effectively detect whether the grinding surfaces of the moving and static rings have tiny defects or not. Meanwhile, through the design of the multi-stage sealing area, it is ensured that gas in the testing cavity cannot leak, and therefore the accuracy of the testing result is improved. In addition, the tool is easy and convenient to operate, the airtightness test of the mechanical seal can be rapidly completed without professional training, the efficiency of finished product inspection is remarkably improved, and reliable guarantee is provided for the overall quality of the centrifugal pump.

The invention provides a controllable processing method for a ring-by-ring femtosecond laser photoetching single crystal optical fiber cladding, and aims to solve the technical problems of low processing efficiency, limited processing length and the like in the prior art. The basic idea of the method is that a femtosecond laser is adopted to output annular femtosecond laser spots. On the basis, accurate control over the diameter and width of the annular light spot is achieved by moving the position of the spherical reflector in the system. And then the annular light spot is focused into the single-crystal optical fiber through a light path system and interacts with a specific local area of the single-crystal optical fiber, so that the refractive index of the area is reduced, and the inscribing of the inner cladding structure of the single-crystal optical fiber is successfully realized. According to the method, the inner cladding structure which is free of length limitation and uniform in refractive index distribution can be efficiently inscribed in the single crystal optical fiber.

The invention relates to the technical field of optical imaging and three-dimensional measurement, in particular to a multispectral structured light path system which comprises a light source module used for generating multi-wavelength light; the collimation system module is composed of any one of one or more lenses, and an aperture diaphragm is arranged on the first face. When the system is used, a multispectral light source design is adopted, the system can meet the three-dimensional measurement requirements of various complex material surfaces, the system adaptability is conveniently and remarkably improved, the image contrast is enhanced through multi-wavelength structured light projection, and the measurement precision is improved. The method effectively reduces the mismatching rate, improves the precision and reliability of three-dimensional reconstruction, achieves the simultaneous obtaining of multispectral information and structured light three-dimensional shape information, expands the application capability of the system in the high-end fields of material recognition, surface defect detection and the like, employs an integrated optical path design, is compact in structure, is high in reliability, and is suitable for large-scale popularization and application. And miniaturization and engineering application of the system are facilitated, and the portability and practicability of the equipment are improved.

The invention discloses a multi-path server, a system power consumption monitoring method and device and a storage medium, and relates to the field of servers, and the multi-path server comprises at least two single-path mainboards, a switching module and a plurality of power supply units; wherein the switching module comprises a vertical power supply board and at least two horizontal switching boards, the vertical power supply board is provided with a plurality of power supply unit interfaces and at least two switching connectors, one end of each horizontal switching board is matched with the switching connector of the vertical power supply board, and the other end of each horizontal switching board is matched with the power supply unit connector of the single-path mainboard. According to the power supply system, the power supply units can stably supply power to the multi-path server composed of at least two single-path mainboards through the vertical power supply board and the horizontal adapter board, so that the single-path mainboards can be flexibly combined to form a multi-path system, a user does not need to purchase the single-path server and the multi-path server at the same time to meet the requirements of different scenes, and the user experience is improved. Repeated purchase expenditure is reduced, equipment utilization rate is improved, and cost waste caused by idle equipment is reduced.

The invention provides an online monitoring device and method for radionuclide in gaseous effluent of a nuclear power plant, and particularly relates to the technical field of radionuclide detection. The device comprises a gas path system, an optical system and an electric control system, wherein the gas path system is used for collecting gas to be detected; the optical system comprises a laser ring-down cavity and a laser detection module, the laser ring-down cavity is communicated with the gas path system and used for containing gas to be detected, the laser detection module comprises a light source module and a photoelectric detector, the light source module is used for generating laser beams, and the laser beams can enter the laser ring-down cavity and are transmitted in the laser ring-down cavity; the photoelectric detector is arranged at a corresponding position of the laser ring-down cavity and is used for detecting the intensity of the laser beam transmitted from the laser ring-down cavity; the electric control system is electrically connected with the laser detection module and used for controlling and processing transmission signals of the laser detection module. According to the invention, on-line monitoring of radionuclides can be realized, and the problem that secondary hazardous wastes are generated by a traditional method is solved.

The invention discloses a high-precision double-optical-comb speed measurement method and device. The method comprises the steps that a double-optical-comb system with a signal optical comb and a local oscillator optical comb is arranged; a target object is arranged in a distance measuring light path system, and the distance measuring light path system is debugged to enable signal light combs of a measuring arm and a reference arm to generate interference signals with local oscillator light combs; adjusting the center frequency of radio frequency spectrum comb teeth of the double optical combs to ensure that the radio frequency spectrum corresponding to the interference signal is in a non-aliasing interval; when the target object is in a moving state, collecting a non-aliasing interference signal of the ranging light path system, and calculating a to-be-measured non-fuzzy distance of the target object in real time based on the non-aliasing interference signal; and subtracting two adjacent groups of to-be-measured non-fuzzy distances of the target object, and calculating to obtain a speed value of the target object. Therefore, the influence of the actual repetition frequency difference change caused by the target motion of the measuring arm on the speed estimation can be corrected.

Systems, methods, and other embodiments described herein relate to guiding a user travelling along a path. In one embodiment, a method includes predicting, by a processor, a behavior of a user based on at least sensor data received by the processor. The user is travelling on a pedestrian path. The method further includes, in response to a predicted behavior, controlling a guide, by the processor, to output the guide along the pedestrian path to direct the user.

The present invention discloses a feeding system for a 3D printer, which includes a liquid path system and a gas path system. The liquid path system includes a first intermediate cavity, a first material tank and a first nozzle. The first intermediate cavity is communicated with the first material tank through a first connecting pipe, and a tenth switching valve is provided on the first connecting pipe. The first intermediate cavity is communicated with the first nozzle through a second connecting pipe, and an eleventh switching valve is provided on the second connecting pipe. The gas path system includes a first pump, a first switching valve, a second reversing valve and a sixth switching valve. The air outlet of the first pump is communicated with the outside atmosphere through the first switching valve, the air outlet of the first pump is connected to the second input interface of the second reversing valve, the air inlet of the first pump is communicated with the outside atmosphere through the sixth switching valve, the air inlet of the first pump is connected to the first input interface of the second reversing valve, and the first output interface of the second reversing valve is communicated with the first intermediate cavity. During the wax liquid transportation process, the wax liquid does not flow through the first pump, so there is no need to heat the first pump, and the service life of the first pump is relatively long.

The invention relates to a consumable-free air allergen detection device and method based on fusion of ultraviolet fluorescence and scattered light, and the device comprises an air path system, an optical detection module, a self-cleaning electrode and an auxiliary module; the gas path system comprises a spiral gas path; the optical detection module comprises an ultraviolet fluorescence unit and a dual-wavelength scattering unit; the ultraviolet fluorescence unit comprises an ultraviolet LED (Light Emitting Diode) and a 340nm band-pass optical filter; the dual-wavelength scattering unit comprises a 650nm laser, a 850nm VCSEL (Vertical Cavity Surface Emitting Laser) and a scattering detector; the auxiliary module comprises a temperature and humidity sensor; the spiral gas circuit is located on a center shaft of the device. An inclination angle of 8 degrees is formed between the ultraviolet LED and the central axis of the spiral gas path; the 340nm band-pass optical filter is positioned right opposite to the ultraviolet LED and is coaxial with the ultraviolet LED; a 650nm laser is mounted in a 15-degree direction in front of the spiral gas path; the 850nm VCSE is mounted in the 90-degree direction of the side direction of the spiral gas path; the scattering detector integrates a forward 15-degree channel and a lateral 90-degree channel. According to the invention, small-size, consumable-free and high-precision real-time detection of protein and allergen in air can be realized.

According to the operation and maintenance instrument panel interpretation and suggestion generation method and system based on the large language model, the defect that only local observation can be achieved in the prior art is overcome by converting massive original time sequence data of main input into an instrument panel image. Meanwhile, visual information such as trend, color, abnormal distribution and the like contained in the image can be completely reserved, and huge redundant data volume does not need to be processed, so that the computing resource overhead is remarkably reduced. Moreover, by fusing the domain knowledge base and the structured cue word, the analysis normal form, the experience logic and the judgment path of the qualification operation and maintenance expert are systematized and standardized, so that the transition from experience-driven artificial insight to model-driven intelligent reasoning is realized; the defects that a manual processing mode is high in subjectivity, low in efficiency and difficult to unify in quality are effectively overcome. Meanwhile, a diagnosis conclusion is directly converted into an executable operation and maintenance instruction, and corresponding operation is automatically triggered, so that the cooperation cost is remarkably reduced.

The invention discloses a miniature front scattering type visibility meter capable of being carried on an unmanned aerial vehicle, which is applied to the field of visibility meters and is characterized in that modulated light rays are irradiated to a reflector I through an emission light path collimating lens cone and then are reflected out of a detection cabin along the direction of an emission channel, and when passing through atmospheric dispersion substances on the lower side of the detection cabin, the light rays are reflected out of the detection cabin along the direction of the emission channel; part of light rays are scattered, enter a receiving chamber through a receiving channel, are reflected by a second reflector, penetrate through a receiving light path collimating lens barrel and irradiate a receiving detector, received electric signals pass through a signal amplification circuit and then are subjected to AD sampling, analog signals are converted into digital signals, the digital signals are sent to a control chip, the digital signals are filtered, and the digital signals are sent to the control chip. The forward scattering visibility meter has the advantages that signal envelope is extracted through transformation, wavelet transformation and noise reduction are performed, extinction coefficients and visibility are finally calculated, the forward scattering visibility meter is miniaturized through special design of a light path system, the use requirements of small size, small wind resistance and light weight are met, and the problem that the visibility meter is difficult to apply to an unmanned aerial vehicle is solved.

Systems and methods are disclosed for reduced-power serial data links. A clock-forwarded serial link carries a clock lane and one or more data lanes. Every active serial data cycle is accompanied by its own serial clock edge: a clock delay allows the same clock edge to drive data at a transmitter and latch data at a receiver. Power is saved by idling the serial clock when data is not being transmitted. A valid signal can be omitted, providing a space saving. At the destination, similar clock-forwarding and delay enables a single parallel clock edge to drive data to the boundary of its clock domain, e.g. from a deserializer to a FIFO. The data link exhibits zero-cycle entry and exit. Variations with half- or single-cycle entry or exit are disclosed.

The invention relates to the technical field of fiber bragg grating preparation, and provides a femtosecond laser phase mask FBG inscribing system based on an off-axis parabolic cylindrical mirror, which comprises a grating inscribing light path system, an off-axis parabolic cylindrical mirror, a phase mask plate and a glass slide which are sequentially arranged along the light path direction, and is characterized in that the grating inscribing light path system emits laser into one end of the cylindrical surface of the off-axis parabolic cylindrical mirror; one end of the off-axis parabolic cylinder of the off-axis parabolic cylinder mirror focuses the laser and emits the laser into the phase mask plate, and the phase mask plate is arranged above the off-axis parabolic cylinder mirror and can generate interference fringes for inscribing the optical fiber; an optical fiber inscribing area is formed on the upper surface of the glass slide, optical fiber refractive index matching liquid is arranged on the optical fiber inscribing area, an optical fiber to be inscribed is attached to the optical fiber inscribing area of the glass slide and placed in the refractive index matching liquid, and FBG inscribing is conducted on the optical fiber to be inscribed through interference fringes generated by the phase mask plate. According to the invention, the energy density of the focusing light spot is obviously improved, and the laser beam can be accurately focused on the optical fiber core.

The invention discloses a self-adaptive control method of an offset printing ink path system, and belongs to the technical field of printing control. The method comprises the following steps: constructing a field density-ink key opening mapping relation and an optical parameter-field density mapping relation corresponding to a paper and ink combination; obtaining current offset printing processing parameters; setting an initial ink key opening according to the field density-ink key opening mapping relation, the target field density and the color ink coverage rate; constructing a system dynamic model; acquiring real-time field density according to the optical parameters acquired in real time and the optical parameter-field density mapping relation; setting control parameters of an ink path controller according to the system dynamic model, the initial ink key opening and the real-time field density; the control parameters comprise PID control parameters and real-time ink key opening. The adaptive capacity of ink path control to different materials and ink conditions is improved, changes of the environment and the conditions can be quickly responded, the machine adjusting process is simplified, and therefore the printing quality and the production efficiency are improved.

The invention discloses a high-pressure gas particle counter taking a laser diode as a light source, which comprises an optical detection unit used for generating laser, dividing the laser into a main light path and an auxiliary light path which are independent, respectively irradiating a main detection area and an auxiliary detection area, receiving a particle scattered light signal and converting the particle scattered light signal into an electric signal; the gas path system is used for selectively conveying to-be-detected high-pressure gas and standard particle gas to the main detection area and the auxiliary detection area; the invention belongs to the technical field of gas particulate matter pollution monitoring, and aims to solve the problem of measurement basis misalignment caused by drifting of output light power of a laser diode along with working time increase and temperature change in the prior art. A set of real-time online dynamic calibration mechanism is constructed; the problem of measurement reference drift caused by factors such as light source aging and temperature drift is effectively solved.

The invention relates to the technical field of radiation detection, and discloses a double-wire proportional counter tube and a signal processing method thereof. The double-wire proportional counter tube comprises a cavity made of TU2 oxygen-free copper, two 50 [mu] m gold-plated tungsten wires are arranged in the cavity in parallel to serve as anode wires, the distance between the wires is 1.8 cm, and the anode wires are led out through ceramic insulation terminals. And P10 gas is filled in the cavity. And the signal processing module comprises a pre-amplification circuit, a coincidence circuit, a main amplification circuit and a data acquisition unit, and is used for carrying out coincidence processing on the two paths of anode signals and screening effective signals. The signal processing method comprises the steps of gas ionization, electron avalanche amplification and signal synchronous judgment and recording. The ray measuring device integrates the counting tube, a gas path system and a data acquisition system, background noise is reduced through a coincidence circuit, and an energy spectrum analysis module can be selected to distinguish alpha rays and beta rays. The invention has the advantages of simple structure, high sensitivity, low background noise and the like.

The invention relates to an aerosol particle scattering characteristic experimental platform and experimental method based on a Pockels effect, and belongs to the technical field of optical measurement. The experimental platform comprises an optical platform, an aerosol particle transport system, an optical path system and a data processing system, the aerosol particle conveying system comprises a combustion chamber, a dust aerosol generator, a water mist aerosol generator, a pipeline and an aerosol jet hole; the combustion chamber, the dust aerosol generator and the water mist aerosol generator are all placed outside a room where the optical platform is located, and the light path system is placed on the indoor optical platform; all parts of the data processing system are placed inside or on the top of the cabinet, and the cabinet is close to the optical platform. According to the aerosol particle scattering characteristic experiment platform based on the Pockels effect, the electro-optical modulator based on the Pockels effect and the phase-locked demodulation technology are used, the Mueller matrix measurement time can be shortened, and the measurement precision is improved.