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81results about How to "Easy to integrate and install" patented technology

Fuel cell system comprising modular design features

There is described a fuel cell power system including a fuel processor subsystem, a fuel cell subsystem, and a power conditioning subsystem. The fuel processor subsystem comprises a main module for producing hydrogen rich streams from a hydrocarbon fuel, a balance of plant module for auxiliary components, and a control and electronic module for monitoring and controlling the fuel processor subsystem. The fuel cell subsystem comprises a main module for generation of electric power and thermal energy from hydrogen rich streams produced by the fuel processor module and air, a balance of plant module for auxiliary components, and a control and electronic module for monitoring and controlling the fuel cell subsystem. Each module has individual components attached thereto, the modules being designed and manufactured separately and assembled together to form the respective subsystems.
Owner:HYTEON

Big specific capacity buoyancy force adjustment and emergency self-rescue integrated device and submersible machine

The invention discloses a big specific capacity buoyancy force adjustment and emergency self-rescue integrated device and a submersible machine. The integrated device includes a water chamber (1), atleast one machine pump valve assembly (3), a detection module and a control module (2); one port of the machine pump valve assembly (3) is communicated with a sea connection port of the submersible machine, and the other port is communicated with the water chamber (1) to achieve injection and discharging of sea water; the detection module and a machine pump assembly (8) are electrically connectedwith the control module (2) separately; the detection module sends detected signals to the control module (2), and the control module (2) controls the machine pump valve assembly (3) to be switched onor switched off to achieve buoyancy force adjustment according to the signals. The big specific capacity buoyancy force adjustment and emergency self-rescue integrated device and the submersible machine have the advantages that not only can the normal buoyancy force adjustment operation capability of the amphibious submersible machine be ensured, but also it can be ensured that the submersible machine can safely float up to be recycled under an emergency situation.
Owner:HOHAI UNIV

Fuel cell vehicle on-board hydrogen supply system

The invention discloses a fuel cell vehicle on-board hydrogen supply system which comprises a hydrogen storage bottle, a bottle mouth valve, a hydrogen supply pipeline and a hydrogen charging pipeline. A gas inlet of the hydrogen charging pipeline is connected with a receiving seat with an infrared communication module, a gas outlet of the hydrogen charging pipeline is in sealed communication witha gas inlet of the bottle mouth valve, a joint o the bottle mouth valve is screwed in a bottle mouth of the hydrogen storage bottle in a sealed mode, a gas outlet of the bottle mouth valve is in sealed communication with a gas inlet of the hydrogen supply pipeline, a gas outlet of the hydrogen supply pipeline is in sealed communication with a hydrogen adding port of a fuel cell, the hydrogen charting pipeline is provided with a first one-way valve, the hydrogen supply pipeline is provided with a first electromagnetic valve, the portion, between the gas inlet of the hydrogen supply pipeline adthe first electromagnetic valve, of the hydrogen supply pipeline is externally connected with a first pressure transmitter, a safety valve, a manual valve, a first TPRD relief device and a first temperature sensor. The fuel cell vehicle on-board hydrogen supply system is simple in structure and good in safety performance.
Owner:SHANGHAI HUAJING HYDROGEN ENERGY TECH CO LTD

Inner-expanded-type solar vacuum heat-collecting pipe

The invention relates to an internal expansion groove type solar vacuum heat collection tube, which belongs to the technical field of solar heat collection facilities. The vacuum heat collecting tube includes an outer glass tube, the glass tube is set on the metal tube in the middle, and the metal tube is coated with a heat-absorbing coating. The middle of the metal tube is broken and connected by a wave expansion joint. The alloy transition pieces are respectively sealed with the extended ends of the two sections of metal tubes, the glass tube, the metal tube and the corrugated expansion joint are vacuumed to form a vacuum layer, and the middle part of the metal tube and the glass tube are respectively equipped with self-centering supports . The invention internally digests the expansion of the metal tube larger than the glass tube, simplifies the installation and connection structure; at the same time, it has sufficient strength and rigidity, and is convenient for system installation and integration, and is especially suitable for high-temperature and high-power solar thermal power generation and other occasions.
Owner:HOHAI UNIV

Dual pressure feed transport system and transport method thereof

The invention provides a dual pressure feed transport system and a transport method of the dual pressure feed transport system, relating to the technical field of solid material transport. The system comprises a dual pressure feed transport vehicle, and a material receiving device or a discharge device connected with the dual pressure feed transport vehicle, wherein the dual pressure feed transport vehicle comprises a chassis, and a main material pot arranged on the chassis, the main material pot is provided with a cyclone separator, at least one filter dust collection device and a fluidizer with at least one air compressor for fully mixing the material and air, the cyclone separator is arranged at the inlet of the main material pot and is connected with the material receiving device, and the fluidizer is arranged at the outlet of the main material pot and is connected with the discharge device. According to the dual pressure feed transport system, the problem of largest effective volume or largest effective loading volume under the same physical volume is solved, so that the processing and manufacturing and installation and integration are convenient, the manufacturing cycle is short, and the cost is low; furthermore, the space is greatly saved, the filter efficiency is improved, the emission concentration is lowered, the transport vehicle is more environment-friendly in work, both the maintenance time and maintenance cost are saved.
Owner:上海航空特种车辆有限责任公司

Reflective differential optical measuring system and reflective differential optical measuring method based on liquid crystal variable retarder

InactiveCN109060660ARealize microscopic measurementEnable Spectral MeasurementsMaterial analysis by optical meansOptical reflectionBeam splitter
The invention discloses a reflective differential optical measuring system and reflective differential optical measuring method based on a liquid crystal variable retarder. The reflective differentialoptical measuring system comprises the following parts: a light source module, configured to generate a non-polarized visible complex color parallel beam; a first beam splitter, configured to reflectthe beam output by the light source module into an optical path to make the outgoing beam passing through the beam splitter continue to be transmitted into the optical path; a reflective difference module, configured to perform polarization or phase delay modulation on the beam emitted by the first beam splitter; a microscope objective, configured to achieve functions of critical illumination andoptical microscopy; a second beam splitter, configured to send the beam outputted by the first beam splitter into a corresponding signal acquisition module after transmission and reflection; and a signal acquisition module, configured to acquire light intensity signals. The reflective differential optical measuring system and reflective differential optical measuring method based on the liquid crystal variable retarder provided by the invention can realize microscopic spectrum measurement of optical reflection anisotropy of samples with no mechanical rotation during the measurement, and has the advantages such as simple structure, good stability and convenient adjustment.
Owner:TIANJIN UNIV

Flexible and bendable shape-memory alloy actuator

The invention relates to a flexible and bendable shape-memory alloy actuator. A shape-memory alloy wire is taken as an actuation element, is retracted when electrified and heated and is elongated when cooled, so that displacement of the actuator and output of force are realized. The actuator comprises a drive end, a flexible solenoid and a fixed end, wherein the shape-memory alloy wire is arranged in the bendable solenoid, one end of the shape-memory alloy wire is in rigid connection with an output shaft, and the other end of the shape-memory alloy wire is connected with a fixed end cap; a bias spring is arranged in the drive end and can assist the shape-memory alloy wire in elongation in the cooling process. The actuator is small in size, light in weight and simple and reliable in structure, can bend according to certain curvature and can be easily mounted and integrated with an external mechanism, and the output force and the displacement are adjustable.
Owner:JILIN UNIV

Arbitrary waveform generation system

The invention provides an arbitrary waveform generation system. The arbitrary waveform generation system comprises an arbitrary waveform generation device and a clock and synchronization unit, The clock and synchronization unit is connected with the arbitrary waveform generation device and is used for sending a synchronization clock and a synchronization pulse signal to the arbitrary waveform generation device; The arbitrary waveform generation device comprises a plurality of arbitrary waveform generation units; the plurality of arbitrary waveform generation units form an array structure; thereceiving unit is used for receiving the synchronous clock and the synchronous pulse signal sent by the clock and synchronous unit; The synchronous clock and the synchronous pulse signal are used forcontrolling output of synchronous arbitrary waveforms of the arbitrary waveform generation units, the problem that flexible trigger control needed by quantum computing control cannot be achieved through an existing arbitrary waveform generator is solved, and the technical effect that flexible trigger control needed by quantum computing control can be achieved is achieved.
Owner:UNIV OF SCI & TECH OF CHINA

Detecting method of beer foam compensating liquid level

The invention discloses a detecting method of beer foam compensating liquid level. The method comprises the steps of scanning a liquid level from bottom to top so as to find the position of a liquid level line, conducting binarization processing on an image by a control center, calculating the black pixel of the foam from upside of the liquid level line to a region of a bottle opening, calculating the height value of the foam, and calculating the value of the foam compensating liquid level according to a set weight. According to the method, the process is reasonable, the method is reliable, and whether the liquid level is qualified or not can be judged accurately.
Owner:SHANDONG MINGJIA TECH

Cleaning operation device of pipeline cleaning robot

The invention belongs to the technical field of specialized robot application, and particularly relates to a cleaning operation device of a pipeline cleaning robot, which comprises a rotary base and aplurality of brush cleaning type mechanical arms, and the brush cleaning type mechanical arms are circumferentially mounted on the rotary base. The cleaning operation device of the pipeline cleaningrobot can be conveniently integrated and installed on the pipeline robot, and by means of the design method that the multiple cleaning arms work at the same time and independent driving of different cleaning arms, the adaptability to the inner diameter and the camber of a pipeline and the high cleaning operation efficiency can be guaranteed.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Resistance loading miniaturization Vivaldi antenna for electromagnetic radiation measurement system

The present invention provides a resistance loading miniaturization Vivaldi antenna for an electromagnetic radiation measurement system. The antenna comprises a dielectric substrate, a trough-line metal area arranged on the top layer of the dielectric substrate and a Z-shaped microstrip line and a chip resistor which are arranged on the bottom layer of the dielectric substrate. The Z-shaped microstrip line is formed by connecting the impedance conversion microstrip line, the coupling microstrip line and the impedance deployment microstrip line in order. Compared to the prior art, the resistance loading miniaturization Vivaldi antenna for the electromagnetic radiation measurement system reduces more than 50% in size and has the moderate gain, and has convenient processing, facilitates integration and satisfies the system application requirement through the PCB technology.
Owner:陕西起微网络科技有限公司

Large triangular composite material pipe truss modular connecting joint

The invention discloses a large triangular composite material pipe truss modular connecting joint, and relates to the technical field of composite pipe truss structures. The large triangular compositematerial pipe truss modular connecting joint comprises a triangular connector, a pipe end joints A, pipe end joints B, pipe end joints C and a bolt pair. The triangular connector comprises rods, three kinds of corner joint plates and nested parts. Three kinds of pipe end joints are arranged, one pipe end joint comprises a chord member pipe connecting sleeve and a connecting flange, and a web member pipe connecting sleeve and two web member pipe connecting sleeves are added to the other two end pipe joints correspondingly. The middle sections of the rods are rhombic sections, and the two endsof each rod transitionally become flat rectangles from rhombuses. High-performance CFRP multi-layer composite thin-wall pipes serve as shells of the rods, and PMI filling materials are arranged in therods. The rods are formed at a time. The large triangular composite material pipe truss modular connecting joint has the advantages of being low in mass, high in strength, large in rigidity, designable in performance and process, simple and reliable in connection, stable in rod, large in bearing capacity and in geometric tolerance requirement, integrally formed and the like.
Owner:SHANGHAI JIAO TONG UNIV +1

Gas-driven pump skid-mounted hydrogenation equipment

The invention relates to a gas-driven pump skid-mounted hydrogenation equipment. According to the technical scheme, a hydrogenation machine, a gas-driven pump, a buffer tank, an air compressor and thelike which are required by the gas-driven pump skid-mounted hydrogenation equipment are installed in a skid-mounted box body in an integrated mode, the skid-mounted box body is arranged on the frontside, the left side and the right side of the hydrogenation machine in an opened mode so that working personnel and a vehicle needing to be hydrogenated can conveniently get close to the hydrogenationmachine so as to facilitate the hydrogenation operation, an air outlet, a lifting opening and a heat dissipation opening are formed in the position, above the gas-driven pump, of the top of the skid-mounted box body, the air outlet can allow the hydrogen possibly leaked at the gas-driven pump to be discharged in time, the lifting opening can conveniently allow the buffer tank to be lifted and assembled or disassembled from the lifting opening, the heat dissipation opening can allow heat generated by the air compressor to be dissipated in time, in addition, the skid-mounted box body is provided with a first roller shutter door, a second roller shutter door and a third roller shutter door on one side of the gas-driven pump, one side of the buffer tank and one side of the air compressor correspondingly, so that a maintainer can conveniently enter the box body to overhaul, maintain, assemble and disassemble the gas-driven pump, the buffer tank and the air compressor.
Owner:上海氢枫能源技术有限公司

Unit module combined air valve

A unit module combined air valve comprises an overall frame (50), unit modules (10) and a linkage device. A frame grating formed by parallel transverse boards (51) and longitudinal boards (52) are fixed in the overall frame (50). Each unit module (10) is disposed in the corresponding rectangular lattice of the frame grating and provided with an inner transmission mechanism for driving a vane of the unit module to open and close. Each unit module (10) is further provided with a coupling structure (34) connected with the inner transmission mechanisms of adjacent unit modules (10). The linkage device is disposed on the frame (50) and used for drive the inner transmission mechanisms of each row or each line of unit modules (10).
Owner:四川迈铁龙科技有限公司

Micro spectrometer device based on arrayed waveguide grating

The invention discloses a micro spectrometer device based on an arrayed waveguide grating and belongs to the technical field of the improvement and innovation of micro spectrometer devices. The devicecomprises a metal base for support and heat radiation, a metal shell used for protection and sealing, an optical interface used for optical fiber input, a single-fiber tail fiber used for end face coupling, a waveguide array grating chip is used for light splitting, a copper sheet used for heat conduction, a semiconductor refrigerator, a CCD detector, and an electrical interface used for connecting the CCD detector and the semiconductor refrigerator. Analysis polychromatic light passes through the optical interface and enters the grating array waveguide chip through a single fiber for light splitting, and the light is directly detected and analyzed by the CCD detector to form a spectrum. According to the device, the size of the spectrometer is greatly reduced, the high-precision light splitting is realized, and the device can be used for the development of wearable equipment. The integrated packaging is adopted, so that the structure is more compact. The device has the advantages of small size, high precision, low price and modular assembly and can be used for large-scale production.
Owner:浙江澍源智能技术有限公司

Pluggable modular box with expansibility

The invention relates to a pluggable modular box with expansibility. The modular box comprises a box main body and an interface module; sealing plates are arranged on the two sides of the box main body through bolts; waterproof gaskets are arranged on the outer sides of the sealing plates; a turnover plate is cut and formed in the middle of the inner side of the box main body, an electric cavity is formed inside the box main body, and the turnover plate is hinged to the box main body; and a water guiding groove is formed in the periphery of the inner wall of the electric cavity. The pluggablemodular box with expansibility has the advantages that accumulated water can be prevented while heat dissipation can be performed synchronously; a mounting plane is provided for electrical elements, loads can be reduced, the installation of different functional components can be facilitated, power supply and communication are facilitated, plug and play of an energy module can be realized, and installation and maintenance of the box body are facilitated.
Owner:重庆光电信息研究院有限公司

Integrated electro-hydraulic servo rotary actuator

The invention provides an integrated electro-hydraulic servo rotary actuator which is characterized in that a hydraulic execution element, a hydraulic control element, a hydraulic power element, a sensor, a motor and a control system are modularly and integrally arranged, so that the power density ratio and the power volume ratio can be greatly improved, the system can be simplified, and system installation control, online real-time monitoring and intelligent protection are facilitated. The integrated electro-hydraulic servo rotary actuator comprises a spiral oscillating cylinder, an integrated motor pump, an integrated valve block, an energy accumulator, a controller and an RVDT angle sensor, the spiral oscillating cylinder comprises a cylinder body, an output shaft and a piston, the piston and the output shaft are arranged in an inner cavity of the cylinder body, the piston is connected with corresponding first meshing inner teeth of the inner cavity of the cylinder body in a meshing manner through outer spiral teeth, the outer cylindrical surface of the piston is in clearance fit with the annular surface of the inner wall of the inner cavity of the cylinder body, and the connecting end of the output shaft is meshed with inner spiral left teeth of a positioning cavity of the piston through outer spiral left teeth.
Owner:张岩

Optical measuring stand apparatus

The invention relates to an optical measuring stand apparatus. A stand structure comprises an uniform illumination system, a panel support structure, a lower layer support framework, a displacement bench and a movable air floating pedestal from top to bottom. By using the stand apparatus, a problem that structures of detection systems of a Shark-Hartmann sensor, a double-grating shearing interference and the like are difficult to adjust is solved. An adjusting stroke of a certain range is possessed and lens groups with different focal lengths are compatible. A center of the stand apparatus is provided with a large installing hole. Through an adapter flange, lens with different diameters are compatible. And design layout is open, which is convenient for dismounting and integration installation.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Stay wire type three-dimensional space positioning device

The invention relates to a stay wire type three-dimensional space positioning device, which comprises a mounting seat, stay wire sensors are arranged on the mounting seat, each stay wire sensor is provided with a stay wire, the free end of each stay wire is provided with a pull head, and the pull heads are used for being fixed at different known coordinate point positions; concentrated reversing pulleys corresponding to the stay wire sensors are respectively arranged on the mounting seat; a pull head of each stay wire is led in through a wire inlet side of the corresponding concentrated reversing pulley, bypasses the corresponding concentrated reversing pulley and then is led out from a corresponding wire outlet side; and a set center point is arranged on the mounting base, the centralized reversing pulleys are distributed around the set center point and are arranged close to the set center point, and the wire outlet side of each centralized reversing pulley is located on the side, facing the set center point, of the centralized reversing pulley. When the to-be-measured target object moves and the connecting position of the pull head needs to be changed, the pull head of the pull wire is directly detached and connected to the position of the known coordinate point which is determined again, only the pull head of the pull wire is operated during operation, the integration degree is high, and use is convenient.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

System for preventing death caused by carbon monoxide poisoning in automobile cabin

The invention designs a system for preventing death caused by carbon monoxide poisoning in an airtight automobile cabin. First whether a person moves in an automobile cabin is detected through an infrared sensor (or human body sensor) additionally installed in the automobile cabin. Then the concentration of carbon monoxide in the automobile cabin is judged through a carbon monoxide sensor additionally installed in the automobile cabin. If the fact that a person moves in the automobile cabin is detected and a dangerous situation that the concentration of carbon monoxide in the automobile cabin is too high exists, on-off states of a central control door lock relay and a glass lifting relay are judged through a vehicle body control module (BCM), and if both are in a closed state, the BCM instructs the glass lifting relay to work to open a glass vehicle window, thereby achieving the purpose of air change and reducing the concentration of carbon monoxide, and avoiding causing death. Particularly, when the concentration of carbon monoxide in the automobile cabin is too high, reminding can be performed through a vehicle instrument board display device and a vehicle loudspeaker.
Owner:王琳

System for preventing people from being killed by stuffiness of automobile cabin

The invention discloses a system for preventing people from being killed by stuffiness due to high temperature of an automobile cabin. The system is used through the following steps of firstly, detecting whether people move in the automobile cabin through an infrared sensor (or a human body sensor) which is additionally mounted in the automobile cabin; then judging whether the temperature in the automobile cabin is high or low through a temperature sensor which is additionally mounted in the automobile cabin; if the dangerous situation that the people move in the automobile cabin and the temperature in the automobile cabin is too high is detected, judging the opening and closing state of a central control door lock relay and the opening and closing state of a glass lifting relay through a body control module (BCM) of the automobile; and if the central control door lock relay and the glass lifting relay are both in a closed state, instructing the glass lifting relay to work and open automobile glass windows by the body control module (BCM) to achieve the purposes of cooling and ventilating, so that people in the automobile cabin are prevented from being killed by stuffiness. Particularly, if the automobile is provided with a communication interconnected system (such as an OnStar), the dangerous situation can be informed to a driver or an owner of the automobile at the same time.
Owner:王琳

Long flow plate heat exchanger

The invention relates to a long flow plate heat exchanger which comprises an upper end plate (3), a lower end plate (4) and serial heat exchange plates (2) laminated orderly. Each heat exchange plate(2) is provided with four corner holes, the same corner hole penetrates up and down to form a channel, and the four channels in pairs are matched with two heat exchange fluids and communicate to the matched heat exchange flow layers correspondingly. Two channels corresponding to the same heat exchange fluid are taken as a distributing channel (20) and a heat exchange channel (31), separately, wherein the distributing channel (20) is divided into a lower flow inlet cavity (20b) and an upper flow outlet cavity (20a), and correspondingly, the heat exchange flow layer communicating to the distributing channel (20) is divided into primary heat exchange flow layers (7, 8) and secondary heat exchange flow layers (9, 10), and the primary heat exchange flow layers (7, 8) and the secondary heat exchange flow layers (9, 10) are in turning communication through a flow exchange channel (31). According to the long flow plate heat exchanger, the same heat exchange fluid flows in and out of the same corner hole, and the structure of the plate heat exchanger is simplified in shape.
Owner:江苏远卓设备制造有限公司

Magnetic field generator calibration device and calibration method

ActiveCN114073580ASolve the problem of different positioning accuracy in different locations in spaceMeet the needs of useSurgical navigation systemsThree-dimensional spaceEngineering
The invention discloses a magnetic field generator calibration device and calibration method, the calibration device comprises a mounting body, the mounting body is fixedly provided with at least six magnetic field sensors, the three-dimensional space positions and placement angles of the magnetic field sensors are known, and the placement angles comprise pitch angles and direction angles. The invention designs a magnetic field generator calibration device, the calibration device is a three-dimensional device provided with a plurality of magnetic field sensors with known relative positions, and the calibration device is used for determining the placement position and the placement direction of the magnetic field generator, so that the problem of different positioning precision of different spatial positions of the existing magnetic field generator can be solved; therefore, the magnetic field generator can be further optimized, and the use requirements of the medical field are better met. By adopting the calibration method provided by the invention, the magnetic field generator can be quickly calibrated, and the calibration method is simple and high in calibration precision.
Owner:成都思瑞定生命科技有限公司

Clutch electric control mechanism for vehicle

The invention relates to a clutch electric control mechanism for a vehicle, and the mechanism comprises a driving motor, a bilateral rotation back stop mechanism, a front underdrive mechanism, a rear underdrive mechanism and a rotation / translation switching mechanism, wherein the driving motor is connected with the bilateral rotation back stop mechanism through the front underdrive mechanism; the rotation / translation switching mechanism is connected with the bilateral rotation back stop mechanism through the rear underdrive mechanism; and the rotation / translation switching mechanism carries out separation operation on the clutch through a clutch release bearing. Compared with the prior art, the invention has the advantages that after the bilaterial back stop mechanism is arranged, non-self-locking transmission pairs such as a high-efficient gear / ball screw and the like can be adopted to serve as a transmission mechanism, and the power of the driving motor can be reduced obviously.
Owner:TONGJI UNIV

Liquid-cooling device of high-power self-coupling transformation rectifier for civil aircraft

The invention relates to the technical field of cooling of an aircraft transformation rectifier, and provides a liquid-cooling device of a high-power self-coupling transformation rectifier for a civil aircraft. The liquid-cooling device comprises a liquid-cooling back plate and a liquid-cooling runner, wherein a heat generation part of the self-coupling transformation rectifier comprises a self-coupling transformer, a rectification bridge, a capacitor and a resistor, the power generation part is arranged on a surface of the liquid-cooling back plate, the liquid-cooling runner is arranged on the other surface, opposite to the heat generation part, of the liquid-cooling back plate and comprises a transformer segment, a rectification bridge segment, a capacitor segment and a resistor segment which are sequentially connected, and a liquid inlet and a liquid outlet of the liquid-cooling runner are integrated to jointly form a liquid-cooling interface. The liquid-cooling device has the beneficial effects of high heat dissipation efficiency, the weight of the whole self-coupling transformation rectifier is reduced, the noise influence is eliminated, the power-to-weight ratio is improved, and the economy of a large-size civil aircraft is favorably improved; an input-output pipe orifice is integrated to a liquid-cooling interface, and the integrated installation of the self-coupling transformation rectifier and other liquid-cooling equipment is more favorably integrated; and the liquid-cooling device is simple in structure and has wide application prospect.
Owner:BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1

Large and medium-sized multilayer space experimental device with high effective load mass ratio and mounting method

PendingCN112455734ASatisfies the requirements of emission mechanics and vibration environment conditionsImprove structural strengthCosmonautic condition simulationsStructural engineeringControl theory
The invention belongs to the technical field of structural design of space experiment devices, and discloses a multilayer space experiment device with a high effective load mass ratio and a mounting method, aiming at solving the technical problems in the existing space science load design, a front vertical plate and a bottom plate are connected into an L-shaped structure through the bottom; a lower frame, a middle layer plate, and an upper frame are connected into a whole from bottom to top; the lower frame is connected with the bottom plate, the front end of the upper frame is connected withthe inner side of the front vertical plate, the bottom of a front ventilation structure is installed at the front end of the bottom plate, the upper portion of the front ventilation structure is connected with the outer side of the front vertical plate, and a notch-shaped skin is connected with the front vertical plate, the upper portion of the bottom plate, the lower frame and the upper frame ina surrounding mode. The upper cover plate is connected with the notch-shaped skin, the front vertical plate and the upper frame from the upper portion. Diversified functions and structural integrationand compact design are achieved, and the multilayer space experiment device is high in load structural mass ratio, compact in modular partition, convenient to assemble and debug, reliable in strength, rapid in iteration and low in cost.
Owner:刘秋生

A multi-parameter measurement probe and measurement method for in-orbit tiny space debris

The invention relates to a multi-parameter measurement probe and a measurement method for on-orbit tiny space debris, belonging to the field of space debris monitoring and measurement, and relates to a method for measuring multiple parameters of size, velocity and mass of on-orbit passive tiny debris, which is used for spacecraft In-orbit space debris measurement payload. The invention includes front and rear thin film sensors, front and rear charge collection electrodes, charge measurement amplifiers and high frequency pulse counters. The front and rear films are plated with metal films, and there are equal-spaced charge collection wires behind the front film and in front of the back film. A negative DC voltage is applied between the collection electrode and the film to collect the charge signals generated by the impact of tiny fragments on the front and rear films. The charges generated by the front and rear films are collected by the collecting electrodes, and amplified into voltage pulse signals by the charge amplifier. The high-frequency pulse counter measures the time difference between the impact signals on the front and rear films to obtain speed and direction information. The energy of the impact debris is obtained from the charge signal, and the mass of the space debris can be obtained by combining the velocity.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

A flexible and bendable shape memory alloy actuator

The invention relates to a flexible and bendable shape-memory alloy driver. The shape-memory alloy wire is used as a driving element, which shrinks when energized and heated, and elongates when cooled to realize the output of the displacement and force of the driver. The driver is composed of a driving end, a flexible helical sleeve and a fixed end; the shape memory alloy wire is placed inside the bendable helical sleeve, one end of the memory alloy wire is rigidly connected to the output shaft, and the other end is connected to the fixed end cover; The driving end has a built-in bias spring, whose function is to assist the elongation of the memory alloy wire during the cooling process. The driver is small in size, light in weight, simple and reliable in structure, adjustable in output force and displacement, can be bent according to a certain curvature, and is easy to install and integrate with external mechanisms.
Owner:JILIN UNIV

An outer cabin structure for an underwater vehicle

The application discloses an outer cabin structure for an underwater vehicle, which includes an outer shell and a hard frame; the overall outer shell is a flat horizontal hexagonal prism structure; the two V-like ends of the horizontal hexagonal prism structure respectively form a bow The outer peripheral surface of the shell is provided with a raised skirt along the horizontal direction; the hard frame is detachably arranged in the middle part of the shell. Through this shell structure design, the rolling stability can be significantly improved under the premise of increasing the lift-to-drag ratio, and the accuracy of data collection can be ensured. Moreover, it also has the advantages of stronger navigation maneuverability, more advantageous lift-to-drag ratio, and a certain recovery force when it is not expected to pitch, which can save propulsion or control energy and increase the cruising range. It can also meet the space requirements of the internal loading as much as possible, and realizes the modular design as a whole, which is convenient for overall dismounting and hoisting, and is convenient for maintenance and replacement. At the same time, the rigid frame can also play a supporting role to strengthen the mechanical strength of the overall structure and resist greater external pressure.
Owner:SUN YAT SEN UNIV
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