36results about How to "The system is compact" patented technology

A planar optical platform for generating a Raman signal from a foreign object comprises an input region and an output region, for receiving and extracting optical radiation, optically coupled to a plasmonic band structure region. The plasmonic band structure region comprises a layer of a first material, having a first refractive index, patterned with an array of sub-regions of a second material, having a second refractive index, wherein a side-wall of each sub-region is coated with a metallodielectric layer. The array of sub-regions gives rise to a plasmonic band structure and, in use, each sub-region confines a plasmon resonance excited by optical radiation coupled into the plasmonic band structure region, which gives rise to a Raman signal from a foreign object placed proximate the plasmonic band structure region. The platform may be incorporated into a spectroscopic measurement system and is particularly useful for surface-enhanced Raman spectroscopy of analyte molecules.

The invention relates to a pulse full-fiber laser consisting of a master oscillator and a power amplifier, wherein the master oscillator consists of a semiconductor pump source with pigtailed fiber, a(1+1)*1 side coupler, signal light reflection fiber bragger grating double-wrapping-layer Yb-doped fiber, a fiber coupling acoustic optical modulator and an output coupled fiber bragger grating; pumpinput fiber in the (1+1)*1 side coupler is connected with the semiconductor pump source with pigtailed fiber; output fiber is connected with a signal light reflection fiber bragger grating or the output coupled fiber bragger grating; double-wrapping-layer Yb-doped fiber and the fiber coupling acoustic optical modulator are sequentially welded between the signal light reflection fiber bragger grating and the output coupled fiber bragger grating; and the output coupled fiber bragger grating or signal input fiber in the (1+1)*1 side coupler is connected with a signal input end of a power amplifier. The whole system of the pulse full-fiber laser only is simply air cooled, has the advantages of compactness, adjustable repetition frequency, narrow output pulse width, high peak power, and the like, and is stable and reliable and is easy to realize the product forming.

The invention discloses a speed-sensor-less construction method for detecting the rotating speed of a bearing-less asynchronous motor, which comprises the following steps: constructing a mathematical model containing a rotating speed subsystem for the original bearing-less asynchronous motor system; establishing a bearing-less asynchronous motor rotating speed left-inverse system containing a rotating speed subsystem; adopting a static neural network and two differentiators S to form a neural network inverse model; training the static neural network; adjusting and determining all weight coefficients of the static neural network so as to achieve the bearing-less asynchronous motor rotating speed left-inverse system; and finally, inversely connecting the static neural network with the back side of the original bearing-less asynchronous motor system in series so as to finish the speed-sensor-less construction. By omitting a photoelectric coder and an interface circuit thereof of the original system, the invention lowers the cost for controlling the system, can carry out high-accuracy control fast and accurately, has high adaptivity, robustness and error tolerance, and has higher generalization capability and adaptive capability.

The invention discloses a refraction-reflection type imaging spectrometer optical system based on a prism-grating-prism decomposition, which is characterized by comprising a field stop, a collimate mirror, a plane mirror, a decomposition assembly, a convergent mirror group and a optical filter which are arranged sequentially from an object to an image. The optical system is in refraction-reflection type, the collimate mirror is a concave spherical reflector, the convergent mirror group is a spherical lens group, the decomposition assembly is of a prism-grating-prism form, a prism and a grating are combined for correcting spectrum curvature of the decomposition assembly, the grating is a reflection type plane grating, and an angle is formed between the convergent mirror group and the decomposition assembly in the optical axis direction and used for adjusting residual spectrum curvature of the optical system. The refraction-reflection type imaging spectrometer optical system based on the prism-grating-prism decomposition has the advantages of low spectrum curvature, high optical efficiency, compact structure, simply processing and installing and adjusting procedures and flexibility in selecting spectrum segments.

The invention belongs to the optical measurement field and relates to a solid-state zoom lens-based non-contact laser thickness measuring device and method. The device is composed of a laser, a lightintensity adjustable attenuator, a first collimating lens, a micro lens, a spatial filter, a second collimating lens, a diaphragm, a beam splitting prism, a first aberration correcting lens, a first solid-state zoom lens assembly, a second solid-state zoom lens assembly, a second aberration correcting lens, an object to be tested, a focusing lens, a photoelectric detector, a data transmission line, a signal control, data processing and display module, and a control signal transmission line. The solid-state zoom lens-based non-contact laser thickness measuring device of the invention is simplerand more compact than a conventional zoom lens group; and the solid-state zoom lens-based non-contact laser thickness measuring device of the invention is more stable, has superior performance, and is close to a diffraction limit compared with a liquid lens. According to the solid-state zoom lens-based non-contact laser thickness measuring device and method, the focal length of the solid-state zoom lens can be adjusted through a full-electronically controlled closed-loop, so that the focusing position of an outgoing beam on the object to be tested is changed; the position of the maximum valueof reflected light intensity is recorded through using a laser self-collimation effect; and therefore, the thickness measurement of the object to be measured can be realized, and the object to be measured is not required to be accurately moved or adjusted during a measurement process.

The invention discloses an imaging-touch multimedia kitchen table, comprising heating equipment, imaging touch equipment and a table body used for integrating the heating equipment with the imaging touch equipment, wherein the table body comprises a table top and a table cavity arranged below the table top; the imaging touch equipment comprises a base plate, a nanometer touch film and an imaging unit, the base plate is tiled and fixed on the table top, and the nanometer touch film is adhered on the base plate; the nanometer touch film is provided with an inductive signal collection and control integrated circuit; the inductive signal collection and control integrated circuit is connected with a calculation control unit via an interface; the calculation control unit is connected with the imaging unit in a wired or wireless communication mode; the table top is provided with the heating equipment; and the heating equipment and the calculation control unit are connected in the wireless or wired communication mode. The imaging-touch multimedia kitchen table integrates cooking, intelligent interaction and displaying touch, and cooking is interesting and convenient, thereby truly realizing an Internet of Things for cooking and dining.

The present invention relates a reflective phase type focal area light-intensity distribution regulating-system. the composition of said system includes a light source, along forward direction of light beam sent by said light source successively are placed a beam splitter anda phase modulation reflector by same optical axis, said beam splitter makes angle of 45 deg. with optical circuit, and the reflecting face of the phase modulation reflector is perpendicular to optical axis; and an object-lens positioned on the reflective optical circuit of said beam splitter. The described phase modulation reflector is formed from several reflective components, and the reflective component is connected with its correspondent displacement driver by means of correspondent connecting bar. The regulation of axial position of reflecting face of reflective component can change the light-intensity distribution of focal area, and its regulating process is convenient.

The invention relates to single-stage balance type ammonia-water re-absorption type heat pump circulation equipment and a heat supplying method. The single-stage balance type ammonia-water re-absorption type heat pump circulation equipment includes a solution circuit, a freezing medium steam pipeline, a backwater supplying pipeline and a driving heat source. The solution circuit includes a high pressure generator, a high pressure absorber, a low pressure generator, a low pressure absorber, two throttle valves, a solution mixing tank, a solution separating tank, a solution circulating pump, a high temperature solution heat exchanger and a lower temperature solution heat exchanger. The freezing medium steam pipeline includes a high pressure freezing medium steam pipeline and a lower pressurefreezing medium steam pipeline. The backwater supplying pipeline includes a water supplying pipeline and a backwater pipeline. The driving heat source includes a high temperature driving heat sourceand a lower temperature driving heat source. The heat supplying method by using the single-stage balance type ammonia-water re-absorption type heat pump circulation equipment includes a backwater supplying and circulating process, an ammonia solution circulating process and an ammonia steam pipeline running process.

The invention discloses a multi-focus multi-field coverage unscreened total reflection stigmatic optical system which is characterized in that: the invention comprises two lens groups; a first lens group comprises a main reflector and an auxiliary reflector; the second lens group comprises two or a plurality of third reflectors; any one of the third reflectors in the second lens group and the first lens group form a three-mirror reflective stigmatic optical system. Because curvatures and positions, the curvatures and aspherical higher order terms, or the curvatures, the positions and the aspherical higher order terms of the plurality of third reflectors in the second lens group are all different, the multi-focus multi-field coverage optical system is realized.

The invention discloses a light intensity detecting system for a mobile phone sterilizer ultraviolet lamp tube. The light intensity detecting system comprises an ultraviolet sensor, an I-V conversion module, a voltage amplification module, a threshold comparison module, a display driver module and a display module. According to the light intensity detecting system for the mobile phone sterilizer ultraviolet lamp tube, the ultraviolet sensor is used for detecting the ultraviolet strength of the mobile phone sterilizer lamp tube, indicating the strength grade of the ultraviolet lamp tube through the display module and controlling sterilizing time according to the displayed strength grade of the lamp tube, and thus the purpose of complete sterilization is achieved. The light intensity detecting system has the advantages of being small and exquisite in structure, convenient to integrate, low in cost and the like.

The invention discloses reconfigurable space-borne all-optical add-drop multiplexing equipment, and belongs to the technical field of spatial information networks. Spatial light passes through a Cassegrain optical antenna and a coupling lens and sequentially enters a first circulator, a second circulator and a fiber Bragg grating tunable filter, wherein a part of the light is reflected, output via the second circulator and detected by a photo-detector; the remaining transmitted light passes through a fiber Bragg grating filter and a third circulator, enters an optical amplifier, enters the coupling lens via the first circulator and is finally shot out by the Cassegrain optical antenna; the controller tunes a fiber Bragg grating; meanwhile, the controller selects the wavelength of a tunable light source, so that the emitted wavelength of the tunable light source is consistent with the reflected wavelength of the fiber Bragg gratin; the light enters the fiber Bragg grating via the third circulator, is reflected by the fiber Bragg grating tunable filter and multiplexed with the light of other wavelength, enters the coupling lens via the third circulator, the optical amplifier and the first circulator, and is shot out by the Cassegrain optical antenna.

The invention discloses an imaging spectral system with a visible light and short-wave infrared common caliber. According to the system, a first aspheric reflector is an aspheric plano-concave reflector, and the concave surface is plated with a high-reflectivity film and faces a target; a second aspheric reflector is an aspheric plano-convex reflector, and the convex surface is plated with a high-reflectivity film and backs to the target; a beam of incident light emitted by the target is reflected by the first aspheric reflector to the second aspheric reflector; then the beam is reflected by the second aspheric reflector to enter a lens set composed of three single-lenses, and off-axis aberration is corrected through the three single-lenses; after the beam obtained after correction is split by a beam splitting prism, the beam is divided into visible light and short-wave infrared light; and the separated visible light and short-wave infrared light are imaged on a detector through modulation by two strip filters respectively. The system is compact in structure, has the advantages of a common caliber of optical structures, convenient installation and adjustment and good imaging quality, and is suitable for spectral imaging of a broad-band infinite target.

The invention discloses a unified controller and control method of a single-stage Z-source photovoltaic grid-connected inverter. A single-stage photovoltaic grid-connected system based on a Z-source inverter utilizes a Z-source network and inverter direct connection time to realize boosting; furthermore, grid-connected current inversion control can be realized; the unified controller is integrated with harmonic and reactive compensation, and is compact in overall structure, relatively high in efficiency and relatively reliable in operation.

A portable testing device integrated with testing, analysis, management and adjusting functions for rotary kiln maintenance comprises sensor, integrated signal collection device and portable computer. The device is flexible to rotary kiln leveled 2 to 9. The device is characterized by self-power supply, friend operation interface, easy use, multi function module, stable working, reliable and fit to the high temperature and dust environment. By using this device, an axial test takes less than two man-hours, accuracy for vertical and horizon axial test is within minus or plus 1.5mm.

The invention discloses a solar container system which comprises a highly-efficient photovoltaic assembly, a storage battery, a solar hot-water supply and power generation system, an inverter, a combiner box, a photovoltaic control optimizer, a seawater desalination system, a freshwater purification system, a container, a folding support and a fixing anchor. The system is compact and neat in structure, and integrates with the container. Since the system employs a solar hot-water supply and power generation system, solar energy can be used highly efficient. The other internal systems are powered by a solar cell, and no external energy is supplied. The system further provides some electric energy to an external system.

The invention relates to a rapid gear measuring method and system based on dual-face engagement. The method can rapidly measure the tooth slope deviation and the taper deviation of a gear, and meanwhile can correct the radial comprehensive deviation of the gear; the system comprises a first supporting base, a second supporting base, a central spindle and a rotating shaft; the first supporting baseand the second supporting base are connected through a spring, the rotating shaft and the central spindle are arranged on the second supporting base and the first supporting base respectively, the central spindle is provided with an air inlet and a plurality of air outlets, a plurality of displacement sensors are arranged on the central spindle, the first supporting base is used for axially supporting the standard gear, the rotating shaft is used for fixing the gear to be tested, the spring is used for performing dual-face engagement transmission with no side gap on the standard gear and thetested gear, the displacement sensors are used for measuring the position of the axis of the standard gear in the dual-face engagement transmission process, the radial comprehensive deviation, the tooth slope deviation and the taper deviation of the gear to be measured can be rapidly measured, and the problem existing in a traditional Gimbal multidirectional measuring mechanism is effectively solved.

The invention discloses a simple algorithm for fast allocating request identifications of gateway mobile position center, characterized in that: reusing context identification of locating flow in the equipment of the said center as request identification of Ie interface and mapping the integral-form context identification of locating flow as character string-form request identification of Ie interface; the mapping between the said context identification and request identifications: the said context identification is an integral number and the number in each position of the integral number is converted into a corresponding character, and all the characters are arranged into a character string, which acts as an request identification to be transmitted through Ie interface to a LCS client as an only request identification. The invention can make GMLC only need to manage the allocation and recovery of flow context ID instead of request ID, thus saving system resources and besides, can make the structure of the GMLC system compact and effective.

The invention provides a long-distance liquid transmission rate measuring device and measuring method. The measuring device sequentially comprises a light source, a first special-shaped optical prism,a sample pipe and a second special-shaped optical prism, wherein the measuring device also comprises a first precise displacement table used for moving the first special-shaped optical prism, a second precise displacement table used for moving the second special-shaped optical prism, a detection system, a movement control system and a computer, wherein the computer controls the second precise displacement table through the movement control system; the computer is also used for controlling the detection system. The device and the method have the advantages that the system structure is compact;the long-distance system liquid transmission rate test can be realized; the fast and precise change of different lengths and distances can be realized; the optical path transmission direction cannotbe easily changed; the system installation positioning and test are facilitated; the result can be fast obtained after once measurement; the light intensities of the sample pipe before sample chargingand after the sample charging do not need to be respectively measured.

The invention discloses an axial foil-free diode composite guiding magnetic field system, which comprises an insulator, an anode cylinder, an annular cathode, a drift tube, a solenoid, a magnet column and a permanent magnet ring, wherein the solenoid, the magnet column and the permanent magnet ring are installed at the outer side of the drift tube in an enclosing mode; one side of the drift tube is provided with the annular cathode, and the other side of the annular cathode is connected with one end of the magnet column; and the other end of the magnet column penetrates through the permanent magnet ring and the insulator and is connected with the external part. According to the invention, stable and efficient transmission for electron beams in the axial direction is realized through using the permanent magnet ring, the solenoid and the soft magnet in a combination mode. In addition, the system disclosed by the invention is compact in structure, light in weight and low in power required to be consumed, and the generated magnetic field distribution can be adjusted conveniently.

A planar optical platform for generating a Raman signal from a foreign object comprises an input region and an output region, for receiving and extracting optical radiation, optically coupled to a plasmonic band structure region. The plasmonic band structure region comprises a layer of a first material, having a first refractive index, patterned with an array of sub-regions of a second material, having a second refractive index, wherein a side-wall of each sub-region is coated with a metallodielectric layer. The array of sub-regions gives rise to a plasmonic band structure and, in use, each sub-region confines a plasmon resonance excited by optical radiation coupled into the plasmonic band structure region, which gives rise to a Raman signal from a foreign object placed proximate the plasmonic band structure region. The platform may be incorporated into a spectroscopic measurement system and is particularly useful for surface-enhanced Raman spectroscopy of analyte molecules.

The invention discloses a heat pump air-conditioning system for an electric automobile, and belongs to the technical field of compression type refrigeration. The heat pump air-conditioning system is applicable to various types of electric automobiles with heat pump air-conditioning systems. The heat pump air-conditioning system mainly comprises a compressor 1, a four-way valve 2, an external heat exchanger 3, a bidirectional thermostatic expansion valve 4, an internal heat exchanger (A) 5, an internal heat exchanger (B) 6 and the like, and is characterized in that the bidirectional thermostatic expansion valve 4 serves as a throttling element of the heat pump air-conditioning system for the electric automobile, and is positioned between the external heat exchanger 3 and the internal heat exchanger (B) 6. By using the bidirectional thermostatic expansion valve 4, the opening degree of a valve opening is automatically adjusted according to the degree of superheat of a collecting system, the refrigerant mass flow rate of a system is changed, the evaporation area of the system heat exchanger (which is the internal heat exchanger (B) 6 during refrigeration and is the external heat exchanger 3 during heating) is sufficiently utilized, and the system has the optimal efficacy. The heat pump air-conditioning system for the electric automobile has the advantages that the cost is low, the structure of the system is compact, the performance is reliable, and the like.

A high-pressure oxygen four-level compression preparing method for a helicopter comprises a servo motor. The servo motor is connected with a lead screw through a planetary reducer, the lead screw is fixed to a rack, and a lead screw nut of the lead screw is in rigidity connection with a push plate. Sliding blocks fixed to the bottoms of the two ends of the push plate are matched with guide rails fixed to the upper surface of the rack. The two ends of the push plate are connected with piston rods of air cylinders. Rodless cavities and rod cavities of the two air cylinders are connected with one-way valves, and the one-way valves are in communication through interstage pipelines so that four-level compression can be formed. By means of the high-pressure oxygen four-level compression preparing method, the low-pressure oxygen can be pressurized to be in the high-pressure state, and the high-pressure oxygen four-level compression preparing method has the beneficial effects that the structure is compact, the weight is small, and the method can adapt to different oxygen flow occasions.

The invention relates to the field of sludge drying systems, in particular to a skid-mounted thermal energy self-circulation sludge drying system device which comprises a sludge system and a hot-air hot-water system.The sludge system comprises a sludge tank, a sludge pump, a sludge noodle machine and a sludge dryer, the lower end of the sludge tank is connected with the sludge noodle machine through a pipeline, the sludge pump is mounted on the pipeline, and an outlet of the sludge noodle machine is positioned above a drying chain plate of the sludge dryer.The hot-air hot-water system comprises an exhaust gas fan, an H105 heat exchanger system, an H106 heat exchanger system and H101-104 internal heat exchange systems.The skid-mounted thermal energy self-circulation sludge drying system device has the advantages of ingenious design, compact system structure, operation method reasonability, long service life, safety, reliability, high drying temperature and low energy consumption.

The invention relates to a solar tracking and collecting system with a foldable mirror surface, which mainly includes three parts: a main column, a rotatable beam and a foldable daylighting mirror surface. The main column plays the role of carrying the whole system structure and collecting solar energy. The rotating beam on the main column can rotate around the main column in the horizontal plane, and can track the azimuth of the sun through motor control. The foldable daylighting mirrors are located on both sides of the rotating beam and can rotate around the rotating beam through the pitch beam below it. Its rotation can be realized by controlling the rotation of the motor to track the altitude angle of the sun. By tracking the altitude and azimuth of the sun, the lighting mirror can realize accurate positioning of the sun. The present invention is provided with anti-vibration mechanism. The bottom of the main column is a sliding platform structure, which can effectively buffer when the longitudinal wave of the earthquake strikes. There are stay wires around the main column, one end of which is connected to the main column, and a wire retracting mechanism is provided at the bottom. When an earthquake strikes, the mechanism can provide a certain space for the main column to move up and down by setting out the wires.

The invention discloses a large-view-field high-resolution laser scanning system based on piezoelectric motor adjustment, which comprises a distance measuring module formed by n distance measuring assemblies, a reflector group and a scanning module, and is characterized in that a positioning control module is arranged in the system; the positioning control module is composed of a piezoelectric motor, a driver and a positioning assembly. A two-dimensional MEMS galvanometer in the scanning module and a positioning assembly are fixedly installed, a piezoelectric motor controls the positioning assembly to adjust the spatial position of the two-dimensional MEMS galvanometer, and resolution multiplication and field angle expansion of the laser scanning system are achieved. The spatial position of the scanning assembly is changed by arranging the precise positioning module, the resolution and the field angle of the scanning system can be remarkably improved, the requirement for the performance of the scanning assembly is lowered, and the application scene of the laser scanning system is expanded.

The invention discloses a construction method for a neural network Alpha-order inverse controller of a bearing-free brushless DC motor. Firstly, two PWM (Pulse-Width Modulation) inverters and the bearing-free brushless DC motor serve as a whole to form a compounded to-be-controlled target; an adopted static neural network and six integrators construct the neural network inverse of the compounded to-be-controlled target; then the neural network inverse is placed in front of the compounded to-be-controlled target and is connected with the compounded to-be-controlled target in series to form a pseudo linear system, and two designed position controllers and a speed controller form a linear close-loop controller; and finally, the linear close-loop controller, the neural network inverse and the two PWM inverters are connected in series in sequence to form the neural network Alpha-order inverse controller of the bearing-free brushless DC motor. The construction method realizes the independent control of the radial displacement and the rotational speed of the bearing-free brushless DC motor rotor, ensures the steady suspension and operation of the motor rotor, and enables the bearing-free brushless DC motor to obtain favorable dynamic and static performance and load disturbance resistance.

The invention discloses an LNG (Liquefied Natural Gas) power ship main engine waste heat and LNG vaporization cold energy integrated utilization system which comprises an NG (Natural Gas) evaporation side, and LNG is sequentially subjected to first-stage pressurization, first-stage heat exchange, second-stage pressurization, second-stage heat exchange and third-stage heat exchange to form a gas state; the first-stage Rankine cycle power generation unit, the second-stage Rankine cycle power generation unit and the third-stage transcritical Rankine cycle power generation unit are transversely nested, cold sources of all the units are formed through LNG step-by-step heat exchange, and the Rankine cycle full power generation system with two-stage pressurization and three-stage transverse nesting is formed by using smoke as a heat source. The system is compact in structure, can meet the air inlet pressure requirement of a main engine, has high system efficiency, and reduces the operation cost of a ship.

The invention relates to a variable-visual-axis stereoscopic vision measurement system and method based on an active visual distance, and the system comprises: a camera which is used for collecting scattered light from a target, and obtaining a multi-visual-angle image sequence; a deflection flat plate device which is used for changing the imaging visual axis direction of the camera and generating effective parallax information required by stereoscopic vision measurement; and a laser ranging device which is used for actively acquiring sight distance information of a specific position and providing a basis for correcting a stereoscopic vision measurement result. Compared with the prior art, accurate and stable visual axis adjustment is achieved through deflection motion of the optical flat plate, the accuracy and reliability of the variable-visual-axis vision measurement method are improved in combination with laser active distance measurement, full-view-field, high-resolution and multi-view-angle image collection can be achieved through simple and compact system composition, and high-efficiency, high-precision and high-adaptability three-dimensional measurement can be ensured through a flexible and reliable online correction method.

The invention belongs to the technical field of photoelectric communication, and particularly discloses a multi-platform combined optical communication system and method, and the system comprises a follow-up turntable optical communication unit which is used for receiving an electric signal and converting the electric signal into an optical signal, a mobile platform optical communication unit which is used for restoring the received optical signal into the electric signal, and a user various electric signal input unit. The user various electric signal input unit is in signal connection with the follow-up turntable optical communication unit, the follow-up turntable optical communication unit is in signal connection with the mobile platform optical communication unit, and the mobile platform optical communication unit is in signal connection with a user. The system can meet the integrated communication requirements of various platforms in different communication modes, and is compact in structure, small in size, convenient to carry and high in expansibility, and the combined units can be increased, decreased and adjusted according to requirements.

The invention relates to a system for improving the uniformity of an MEMS infrared radiation surface in a space environment, belongs to the technical field of infrared radiation calibration, and solves a problem that the temperature uniformity of a conventional infrared radiation surface is poor. The system for improving the uniformity of the MEMS infrared radiation surface in the space environment comprises a thermal homogenization heat conduction layer, a heating layer and a separated electrode group, wherein the thermal homogenization heat conduction layer is located between the heating layer and the MEMS infrared radiation surface; the separated electrode group supplies power to the heating layer, so that the heating layer emits heat; the heating layer is used for heating the MEMS infrared radiation surface; and the thermal homogenization heat conduction layer plays a role in thermal homogenization of the MEMS infrared radiation surface, and thus the temperature uniformity of the MEMS infrared radiation surface is improved. According to the invention, the uniformity of the MEMS infrared radiation surface in the space environment can be greatly improved, the temperature distribution uniformity is superior to 3K, and the MEMS infrared radiation surface can meet the use requirements of infrared load radiation calibration.