442results about How to "Achieving a modular design" patented technology

In a drive train for a motor vehicle, with a converter bell arranged between an internal combustion engine and a transmission, and a drive shaft extending through the converter bell and carrying a clutch device and an electric machine together with a power converter, which comprises at least one capacitor and power electronics which are integrated into the converter bell, the capacitor and the power electronics are arranged between a stator of the electric machine and the converter bell such that they are distributed around the outer circumference of the electric machine in the radial direction and the capacitor and the power electronics are arranged such that they are in thermally conductive contact with the cooling system for the stator of the electric machine.

The invention provides a positioning compaction device, a compaction device and a tool for the auxiliary machining of chassis of motor trains. The positioning compaction device comprises a beam, two support frames, two rotary vertical compaction structures, a side positioning structure, a lateral butting structure and two adjustable intermediate support structures, wherein the two support frames are slidably arranged on both sides of the upper surface of the beam respectively; the two rotary vertical compaction structures are arranged on the tops of the two support frames respectively; the side positioning structure is arranged on the lateral part of one support frame in the two support frames; the lateral butting structure is arranged on the lateral part of the other support frame in thetwo support frames; and the two adjustable intermediate support structures are arranged on the upper surface of the beam and are positioned between the two support frames. The positioning compaction device realizes the modular design of the tool for the auxiliary machining of the chassis of the motor trains and solves the technical problems of large volume and inconvenient carrying and movement of a tool structure for the auxiliary machining of the chassis of the motor trains and incapability of auxiliary machining of the chassis of the motor trains with different types due to low adjustability.

The invention relates to a battery management system. The battery management system comprises a CPU, a battery temperature collection unit, a battery voltage collection unit, a battery current collection unit, a battery protection unit, a heat management control unit, a module voltage collection unit and an electronic switch unit, wherein the battery temperature collection unit, the battery voltage collection unit and the battery current collection unit are connected with the CPU and a battery pack respectively; the battery pack is connected with the module voltage collection unit through the electronic switch unit; the module voltage collection unit is connected with the CPU; the CPU is connected with the heat management control unit and the battery protection unit respectively; and the battery protection unit is connected with the battery pack. The battery management system also comprises a wireless communication module, an alarm unit and a CAN communication interface connected with the end of a PC. The battery management system can monitor the working condition of batteries, calculates the SOC (State of Charge) of the battery pack, and avoids overdischarge, overcharge and overheat, so that the storage capacity and cycle life of the batteries are utilized to the maximum extent.

The invention discloses a modularized integrated smoke purification system and method for removing a plurality of pollutants. The system comprises an absorption tower, wherein a smoke inlet is arranged in the lower end of the absorption tower; the absorption tower is internally provided with a spraying device which is located above the smoke inlet and is used for spraying an absorbent, a first wet-type electric precipitation device located above the spraying device, and a second wet-type electric precipitation device located above the outer side of the absorption tower; and a smoke uniform distributor is arranged between the first wet-type electric precipitation device and the second wet-type electric precipitation device. The invention further discloses a method for carrying out smoke purification by using the system; the pollutants existing in an aerosol form, including SO2, NOX, superfine smoke dust, SO3 acid fog, mercury and the like in the smoke, can be intensively removed; gypsum rain is prevented and an environment is protected; and the smoke purification efficiency is improved.

The invention discloses a light emitting diode (LED) assembled screen. The LED assembled screen comprises a control box, a framework and at least two LED display modules, wherein the control box at least comprises two independent paths of output interfaces; each output interface is connected with one LED display module; the at least two LED display modules are assembled and fixed on the framework; each of the LED display modules comprises a box body, a circuit board, a pouring sealant, a driving chip, an input interface and a plurality of LED chips; the driving chip and the plurality of are arranged on the circuit board; the driving chip is connected with the LED chips and the input interface respectively; the input interface is formed on the box body and connected with the corresponding output interface of the control box; the box body has a flat structure, and one face of the box body is provided with an opening; the circuit board is arranged in the box body; the pouring sealant is covered on the circuit board so as to seal the opening face of the box body; and the LED chips are arranged on one side, corresponding to the opening face of the box body, of the circuit board. Due tothe LED assembled screen, the assembling flexibility of an LED display screen is improved, and the LED assembled screen is convenient to install and maintain.

The invention discloses a Matlab simulation visualized platform of a vehicle Bug obstacle avoidance algorithm. The platform comprises an environmental map generation part, a Simulink algorithm simulation realization part and a GUI animation simulation effect interface, each of the parts and interface is realized by software simulation or physical hardware, so that the platform can be applied to the whole development and verification process from purely software simulation to complete physical robot system operation. An environmental map can be drafted via a mouse, or generated via file introduction, or created in real time via data collected by external sensors; the Simulink algorithm simulation realization part realizes internal recycling of the algorithm or stops triggering conditions based on a Simulink cycled operation mode; and the GUI animation simulation effect interface mainly simulates movement of a vehicle according to the obstacle avoidance algorithm. The broken-line Bug algorithm, arc Bug algorithm, laser range finder, panorama camera and the like are practically verified, operation of the platform is simple and friendly, and the research and development efficiency of obstacle avoidance algorithm of autonomous vehicle navigation is greatly improved.

The invention relates to a convertible static compensator provided with a modular multilevel converter structure. The convertible static compensator provided with the modular multilevel converter structure comprises a static synchronous compensator, a static synchronous series compensator and a series transformer (12). The static synchronous compensator comprises a converter (7) and a transformer. The static synchronous series compensator comprises a converter (9), a series transformer (10) and a change-over switch. One end of the converter (7) of the static synchronous compensator is in parallel connection with an electric transmission line I through a shunt transformer (8). The other end of the converter (7) of the static synchronous compensator is connected with one end of the converter (9) of the static synchronous series compensator. The other end of the converter (9) of the static synchronous series compensator is connected with an electric transmission line II through the change-over switch and the series transformer (10) of the static synchronous series compensator in sequence. The series transformer (12) is in series connection with the electric transmission line I. The convertible static compensator provided with the modular multilevel converter structure breaks through the technological difficulty of components in series, facilitates individual-phase control and modular design, bypasses a trouble unit through redundancy, and improves the reliability of the operation of equipment. Further, component switching frequency is low, and therefore equipment operation loss is small.

The invention discloses a parallel control method of a three-phase two-level inverter with isolation transformers. The parallel control method comprises the steps of: (1) connecting each auxiliary inverter with one isolation transformer, to be specific, modulating direct-current into alternating-current power with certain amplitude and frequency by the regulation of the auxiliary inverters, and then carrying out voltage reduction and filtering on the alternating-current by the isolation transformers to supply the power to alternating-current auxiliary loads on a motor train unit for use; (2) sampling the output line current of the auxiliary inverters and the liner voltage of secondary sides of the isolation transformers, calculating active power and passive power under the instantaneous output of the auxiliary inverters and carrying out filtering treatment; (3) generating given voltage amplitude signals and given frequency signals for current-sharing control of the auxiliary inverters by using a drooping characteristic algorithm; and (4) enabling the auxiliary inverters to output three-phase alternating-current power with certain voltage amplitude and frequency by means of voltage closed-loop control and frequency closed-loop control. The parallel control method has the advantages of simple principle, easiness for implementation, capabilities of improving antijamming capability of the system and greatly enhancing system reliability, and simultaneously reducing system hardware cost, and the like.

The invention discloses a high-power braking energy consumption device and a control method thereof. The device comprises an isolating switch module, a chopper module, a reactor module and a braking resistance module, wherein the isolating switch module is connected with the reactor module, the chopper module is connected with the reactor module, the braking resistance module is connected with the chopper module, the isolating switch module detects the voltage of a direct-current bus, the braking resistance module comprises a bipolar linkage blade switch and an absorbing resistor, the double-system conversion of the high-power braking energy consumption device is realized through the bipolar linkage blade switch according to the voltage of the direct-current bus, and the braking resistance module implements the absorption and discharge of braking energy. The reactor module comprises a filter reactor which is used for carrying out filtering on the voltage of a power grid. The chopper module is used for carrying out chopping control on the braking energy. According to the invention, the double-system conversion of the high-power braking energy consumption device is realized, and in the double-system, the device can absorb higher power fed back by currently involved domestic railway vehicles, thereby ensuring the reliable operation of power grids and vehicles.

The present invention relates to a vibration-damping suspension device for light caterpillar motor-platform. It is composed of spring vibration-damping component and swinging component. Said swinging component is positioned in the lower portion and is used for mounting loading wheel, and is hinged with spring vibration-damping component; the spring vibration-damping component is fixedly connected with motor-platform body by means of fixed seat. Said vibration-damping suspension device ensure reliable engagement of platform loading wheel and caterpillar.

The invention provides an HVDC (high voltage direct current controller) and UPFC (unified power flow controller) system based on a modularized multi-level converter. The HVDC and UPFC system comprises converting devices (1, 2 and 11), grounding circuits (3 and 12) and a direct current transmission line (13). The UPFC is formed by the converting device (1) and the converting device (2). The HVDC is formed by the converting device (1) and converting device (11). The HVDC and the UPFC shares one converting device, so that cost and investment for engineering construction are saved, equipment utilization rate is improved, concentrated management and control are facilitated. The converting devices use the topological structure of the modularized multi-level converter, so that technical difficulty in component serial connection is avoided, split-phase control and modularization are facilitated, fault units can be bypassed through redundancy, operation stability of the devices is improved, on and off frequency of components is low, and device operation loss is low.

The invention discloses a circular-disc-shaped underwater glider and a working method thereof. The glider comprises a circular-disc-shaped shell, a pressure-resisting shell, a control system, a communication navigation system, a driving system, a sensor system, an energy source system and an external port. The circular-disc-shaped shell made of a buoyancy material covers the pressure-resisting shell and greater buoyancy is provided for the circular-disc-shaped underwater glider, so that effective load is improved. The pressure-resisting shell structure design scheme combining the pressure-resisting shell and a pressure-resisting hollow ring is adopted so that the utilization rate of the inner space of the circular-disc-shaped underwater glider is improved; meanwhile, the quantity of sealing nodes of internal equipment is greatly reduced, more equipment is prevented from being exposed in a deep sea complicated underwater environment, and thus the whole reliability is improved. A gravity center adjusting system is arranged in the pressure-resisting hollow ring, and a force arm and a moment, generated by a slide block, are relatively great; and the posture control efficiency is improved and the inner space of the circular-disc-shaped underwater glider is sufficiently utilized.

The invention relates to a flue ozone distributor, and an arrangement mode and an application thereof. The flue ozone distributor comprises a distribution main pipe, a plurality of distribution branch pipes and a plurality of Venturi distributors, wherein the plurality of distribution branch pipes are branched and led out from different longitudinal sections of the distribution main pipe; the plurality of distribution branch pipes are in staggered arrangement; and the plurality of Venturi distributors are arranged alternatively and symmetrically at two sides of the distribution branch pipes. The flue is provided with the flue ozone distributor. The flue ozone distributor is generally applied in the fields of low temperature ozone denitration of industrial boiler / kiln gas in industries such as thermoelectricity and steel. The flue ozone distributor is simple in structure and convenient for installation. A direction that ozone is sprayed into the flue is vertical to a gas flow direction. No dust deposition blockage problem exists. Besides, the inlet content of O3 is adjusted according to the concentration of NO in the gas; operability is strong; and operational economic benefits are increased, thereby meeting practical industrial applications.

The invention relates to a combination type high-altitude precise aerial delivery system, which is composed of a controllable parafoil aircraft assembly, a detachable power assembly and a detachable round parachute assembly. After being delivered in high altitude, the system is controlled autonomously and lands on a destination safely and precisely. When both the flying environment and the landing environment are good, the controllable parafoil aircraft assembly is only used to execute a task, thus, the flying weight of the system is lightened, and the system is simplified. The controllable parafoil aircraft assembly and the detachable power assembly are combined, thus, the system can be applied to a severe flying environment; furthermore, the flying delivery distance can also be prolonged. The controllable parafoil aircraft assembly and the detachable round parachute assembly are combined, thus, the round parachute can be opened when the system reaches a low-altitude airspace of a landing point to realize ease landing, and, the system can be applied to a severe landing environment. The controllable parafoil aircraft assembly, the detachable power assembly and the detachable round parachute assembly are combined, thus, the system can be applied to the severe flying environment; the flying delivery distance can be prolonged; furthermore, the system can be applied to the sever landing environment to realize the ease landing. The system disclosed by the invention is multifunctional and wide in application range.

The invention discloses a physical interface device of an all-digital real-time simulation system of a power system, and the physical interface device can synchronously convert AI, AO, DI, DO and other signals of the real-time simulation system with high precision, capture level hopping, pulse triggering and other events, mark precise time scales for the events, continuously output waveform with very small refresh intervals and realize fault wave recording and replaying, open-loop test of a traveling-wave device and other functions. In addition, the modular design is realized according to the physical interface device of the all-digital real-time simulation system of the power system, the interfaces of AI, AO, DI and DO function boards are same, and the number of the different function boards can be flexibly configured according to the needs of trials; furthermore, the physical interface device of the all-digital real-time simulation system of the power system realizes fault diagnosis, automatic calibration and other functions and realizes the synchronous and parallel operation of a plurality of physical interface devices.

The invention relates to a unified power flow controller used for an unbalanced system. The unified power flow controller comprises a static synchronization compensator and a static synchronization series compensator. An upper part split capacitance and a lower part capacitance are arranged between the static synchronization compensator and the static synchronization series compensator. The upper part split capacitance and the lower part split capacitance are connected in series and then respectively connected with the static synchronization compensator and the static synchronization series compensator in parallel. The upper part split capacitance and the lower part split capacitance are connected in series and then a split capacitance branch circuit is formed. A midpoint of the split capacitance branch circuit is connected with a neutral point of the static synchronization series compensator. Output ends of the static synchronization compensator and the static synchronization series compensator are respectively connected with a power grid. The unified power flow controller is convenient to split-phase control and modularization design, small in running loss, good in voltage control capacity, good in zero-sequence current controlling, few in element quantity, low in cost and high in cost performance.

The invention provides an in-orbit expansion-type satellite structure which comprises a plurality of satellite body modules with the same configuration arranged along circumference, wherein the adjacent satellite body modules are connected by an expansion-type truss, and a corresponding satellite body connecting and unlocking device is disposed between the adjacent satellite body modules; at a launch stage, the satellite body modules are connected by the satellite body connecting and unlocking device into a whole, so a satellite body is retracted and satisfies a demand for carrying and enveloping during the launch; when the satellite body enters an orbit, the satellite body connecting and unlocking device works to realize unlocking among the satellite body modules, and the satellite body modules realize in-orbit expansion under effect of the expansion-type truss; and during in-orbit work, in-orbit high-rigidity locking of the expansion-type truss is realized by a locking mechanism of the expansion-type truss. The in-orbit expansion-type satellite structure provided by the invention solves the contradiction between that the satellite body cannot exceed a carrying limit and that the satellite shall satisfy a structural configuration demanded by an in-orbit large load, and provides an engineering solution manner for subsequent applications of the large load.

The invention discloses horizontal filling equipment for missile encasement. The horizontal filling equipment comprises a missile horizontal propelling platform and a missile storage and transportation box lifting platform which are sequentially arranged in the missile filling direction, wherein the missile storage and transportation box lifting platform can achieve six-degree-of-freedom movementof a missile storage and transportation box, and the missile horizontal propelling platform can be used for achieving the adjustment of circumferential poses of the missiles for missiles with different models and different centering part positions in a simple, convenient and rapid mode, so that guide buttons of the missiles are enabled to be aligned with guide grooves in the missile storage and transportation box. According to the horizontal filling equipment for the missile encasement, through the cooperation between the missile horizontal propelling platform and the missile storage and transportation box lifting platform, a missile-borne guide rail on the missile horizontal propelling platform can be quickly aligned with a missile-borne guide rail on the missile storage and transportation box, so that the filling efficiency is improved, and the equipment has the advantages of being high in applicability, convenient to operate, high in filling precision and filling efficiency and thelike overall.

The invention relates to an interline power flow controller based on a modular multi-level converter structure. The interline power flow controller comprises a static synchronous compensator (1) and a static synchronous series compensator (2), the static synchronous compensator (1) comprises a converter (7) and a parallel transformer (8), the static synchronous series compensator (2) comprises a converter (9) and a series transformer (10), the converter (7) is connected into a power transmission line I in parallel through the parallel transformer (8), the converter (9) is connected in a power transmission line II in series through the series transformer (10), a unified power flow controller comprises a by-pass switch (4), and the by-pass switch (4) is connected with the series transformer (10) in parallel. The interline power flow controller avoids the technical difficulty of device series connection, facilitates split-phase control and modular design, can bypass a trouble unit through the redundancy technology, improves operational reliability of a device, and is low in device switching frequency and small in device operation loss.

The invention provides a wheel set integrating the driving function and the steering function. The wheel set integrates a dual-direction omni-bearing steering mechanism and a walking driving mechanism, integration of a dual-direction omni-bearing steering mechanism is improved, modular design of the driving wheel set is achieved, all the parts are installed on a base, the integration level is high, the installation size is reduced, integral installation and integral detachment are achieved, and installation, maintenance and the like of the driving device are convenient; multiple driving wheel sets are jointly used or a single wheel set and auxiliary supporting wheel sets are jointly used, and small-space transport adjustment such as heavy-load and intermediate-range transport, small turning radius and even in-situ rotation, transverse movement and the like of transport equipment can be achieved.

The invention discloses an azimuth device applicable to a vehicular photoelectric turntable. The azimuth device comprises a revolving shaft system, an azimuth shell, a rotary transformer and a torque motor. The revolving shaft system comprises an azimuth dead shaft, an azimuth moving shaft, an azimuth rotating adaptor disc and two groups of bearings, the azimuth dead shaft is connected with the azimuth moving shaft and the azimuth rotating adaptor disc respectively via a first bearing and a second bearing, the first bearing bears biaxial loads, the second bearing is larger in diameter and bears radial and tipping loads, and thereby the rotating disc type revolving shaft system borne by the internal and external bearings is formed. The revolving shaft system as well as the rotary transformer and the torque motor are respectively positioned on an upper side and a lower side of an annular transverse plate in the middle of the azimuth shell and are independent to one another. Furthermore, a comprehensive labyrinth felt collar sealing structure is adopted. The azimuth device has the advantages of simple structure, low height, light weight, good maintainability, excellent expansibility, strong environmental suitability and the like, mechanical characteristics and capabilities of resisting shock, vibration and large-angle inclination of the photoelectric turntable are effectively improved, and tracking precision of photoelectric tracking equipment is guaranteed.

The invention discloses a power-distributed diesel motor train unit cooling system based on a heat treatment system. A water cooling system, a supercharged air cooling system, a hydraulic oil cooling system, a cooling fan drive system and a heat treatment system are integrated to form a power pack; the water cooling system is used for cooling a water jacket of an engine (4) and a permanent magnet generator (14); the supercharged air cooling system is used for cooling the supercharged air of the engine (4); the hydraulic oil cooling system is used for cooling a fan drive system; the cooling fan drive system is used for controlling the rotating speed of a fan; the heat treatment system is used for carrying out low-temperature pre-heating and flow direction control on cooling water and hydraulic oil. The power-distributed diesel motor train unit cooling system based on the heat treatment system is easy and convenient to mount, enables the space size and weight to be reduced, enables the energy waste to be reduced, enables the engine to always locate at a good working temperature and effectively prolongs the service life of such components as engine and generator, and the application of the motor train unit is not restricted by the outside environment.

The invention provides a double-detector micro near-infrared spectrometer with a whole spectral band of 800-2,500nm. The double-detector micro near-infrared spectrometer consists of a near-infrared light source, an entrance slit, a concave collimating lens, an MOEMS scanning raster micro-mirror, a concave imaging lens, an exit slit and mono-tube near-infrared double sensors different in response wavelength range. In the invention, the improved Czerny-Turner optical path system effectively inhibits aberration and guarantees the imaging quality of the system. By adopting the MOEMS scanning raster micro-mirror integrated with an angle sensor, the double-detector micro near-infrared spectrometer provided by the invention has scanning and light splitting functions in a broadband range and also can accurately control the scanning angle in real time to realize continuous and accurate detection of different wavelengths of the mono-tube near-infrared double sensors. The double-detector micro near-infrared spectrometer has the advantages of low price, small volume, fast response, high precision, wide detection spectral range and the like.

The invention discloses a lower shell of an aluminum alloy battery pack. The lower shell comprises a frame structure, cross beams, a floor and a middle lifting lug. The frame structure is formed by splicing four frames with L-shaped sections, the two groups of cross beams have the same structure and are arranged in parallel, the shape of a cross section of one group of cross beams is inverted T, the shape of a cross section of the other group of cross beams is a step, and the two groups of cross beams and the L-shaped frames are overlapped by adopting male end and female end insertion structures and then are welded. The cross section of the floor is linear, and the floor is welded with the L-shaped frames and the cross beams after inserted connection. The middle lifting lug comprises a cylindrical middle lifting lug body of a hollow structure, the middle lifting lug body penetrates through the cross beams from bottom to top, a top of the middle lifting lug body is matched with a nut, and a circular ring piece penetrates through the middle lifting lug body from top to bottom and is fixed through MIG welding. According to the lower shell, the advantages of aluminum alloy are fully absorbed, the lightweight design of a battery pack box body is realized, the connection is reliable, the sealing performance is good, and the processing efficiency is high.

The invention discloses an integrated variable frequency fracturing pumping device control system and control method. The integrated variable frequency fracturing pumping device control system comprises a high voltage electric input unit, an integrated container, and a variable frequency integrated machine; the integrated container comprises a power supply and distribution unit connected with a high voltage circuit breaker, the power supply and distribution unit is connected with and provides power for a main touch screen display, a main controller, an auxiliary controller, an auxiliary touchscreen display, and the variable frequency integrated machine correspondingly, and the main controller is connected with a remote control station and a camera system correspondingly; the main controller is further connected with the fluid end and the power end of a fracturing pump and an illuminating system; the main controller is further connected with a fracturing truck; the variable frequency integrated machine comprises a detection system, a temperature control system, and a frequency converter, wherein the detection system and the temperature control system are connected with the main controller correspondingly, the frequency converter is connected with the auxiliary controller, the frequency converter is connected with a variable frequency motor, and the variable frequency converteris connected with the fracturing pump. According to the integrated variable frequency fracturing pumping device control system and control method, the whole control system is divided into two independent modules, the structure adopts an integrated modular design, the mounting space is compact, maintenance is convenient, and assembly is flexible.

The invention discloses a lower shell of a steel-aluminum hybrid battery pack. The lower shell comprises a frame structure, cross beams, longitudinal beams, bottom plates and middle lifting lugs; themiddle lifting lugs penetrates through the cross beams and the bottom plates from top to bottom and are fixed to the cross beams and the bottom plates, and each of the middle lifting lugs comprises amiddle lifting lug body of a cylindrical hollow structure, wherein the top end of the middle lifting lug body is matched with a middle lifting lug nut, and the lower end of the middle lifting lug bodyis sequentially installed in a middle lifting lug reinforcing plate and a middle lifting lug sleeve in a penetrating mode; the frame structure is formed by splicing four frames, the four frames are divided into two groups, and each group of frames are the same in structure and are oppositely arranged; the cross beams are formed by embedding an inverted U-shaped thin-wall structure with a lightening hole into an inverted T-shaped thin-wall structure with a lightening hole, and the frame structure is made of aluminum alloy; the cross beams, the longitudinal beams, the middle lifting lugs and the bottom plates are all made of steel. According to the invention, the advantages of aluminum alloy and high-strength steel are fully absorbed, the lightweight and low-cost design of the battery packbox body is realized, the welding deformation is small, the connection strength is high, and the processing efficiency is high.

A minimized and portable infrared spectrograph is composed of pulse infrared ray source, parabolic reflector, scanning micro - lens, flash grating, steering reflector, slit and high sensitivity of room temperature infrared unit detector. It features that a new light path system and pulse infrared ray source based on MEMS technology are applied on said spectrograph.

The invention relates to fully rotary type underwater propellers. Each fully rotary type underwater propeller is composed of a propulsion mechanism, a horizontal steering mechanism, a vertical steering mechanism and an electronic element set; under the action of the horizontal steering mechanism and the vertical steering mechanism, the propulsion mechanism can rotate around the Y axis and the Z axis; the situation that internal cables are wound due to relative rotation between the components is avoided, and thus the propulsion mechanism can rotate at any angle around the Y axis and the Z axis and can continuously rotate by multiple circles; the rotation angles of the propulsion mechanism around the Y axis and the Z axis can be determined by detecting output signals of a horizontal steering shaft position detecting device and a vertical steering shaft position detecting device; and a second sealed cabin is provided with at least one watertight plug connector, and the watertight plug connectors can conduct electric power and signal transmission with submersibles or the outside and can also achieve collaborative operation among the multiple fully rotary type underwater propellers. The fully rotary type underwater propellers are high in flexibility and compact in structure, and the modular design of the submersibles is beneficially achieved.

The invention discloses a micro projector module and a display device. The micro projector module comprises a display module, a lens set module and a refraction adjusting module. The display module comprises a display unit and a fixing rack fixing the display unit, wherein the display unit is used for displaying input data. The lens set module comprises a set of lenses and a lens set rack used for fixing each lens, wherein the set of lenses are used for performing refractive imaging adjustment on light emitted by the display unit. The refraction adjusting module is in connection with the display rack and the lens set rack, and is used for allowing the display module to perform straight reciprocating motion relative to the lens set module by utilizing the cam principle. The micro projector module realizes modularization design and application, has the characteristics of concise and compact structure, and high precision, and is more comfortable to wear. In addition, the micro projector module also comprises a refraction adjusting mechanism which can rapidly and conveniently adjust refraction effects, so that users with farsightedness or shortsightedness can use the micro projector module without wearing glasses, thereby greatly improving user experience.

The invention provides a double-axis minisize analog sun sensor. The sun sensor is composed of a photoelectric module and a major structure. The photoelectric module comprises mask glass, a mask glass installing plate, a silicon photocell, a ceramic base, a base installing plate, support screws and conical nuts. The major structure comprises a shell, a sealing gasket, a rear cover and an electric connector. Sun rays penetrate through a light through hole in the mask glass and reaches the light receiving surface of the silicon photocell, different photo-generated currents are output through detection photosensitive areas of the silicon photocell, and the sun vector two-axis azimuthal angle is further calculated out; when the sun vector azimuthal angle goes beyond a view field of the sun sensor, a monitored photosensitive area corresponding to the super view field direction outputs the photo-generated currents due to illumination, and thereby an indication of going beyond the view field boundary is given out. By means of the sensor, high accuracy measurement of the sun vector angle can be achieved within the double-axis large view field range, the design characteristics of modularization and lightweight are achieved, the development trends of microminiaturization and intellectualization of a future satellite platform can be fully satisfied, and a wide application prospect is achieved.