Patents
Literature

631results about How to "Reduce shock" patented technology

Electric vehicle wireless charging guidance system

The invention provides an electric vehicle wireless charging guidance system which comprises an electric vehicle wireless charging service platform and an intelligent guide terminal. The electric vehicle wireless charging service platform is a network-based information management platform to manage an electric vehicle wireless charging system and provide service to a user. The intelligent guide terminal is an exchange interface between the user and the electric vehicle wireless charging service platform and provides service to the user. According to the intelligent guide terminal, an embedded processor is used as a core, the remote information exchange with the electric vehicle wireless charging service platform is realized through an upstream communication module, and the data exchange with a vehicle-borne end wireless charging controller is realized through a downstream communication module. Various operations such as vehicle parking to a place, the check of the real-time information of vehicle data and a charging station, the control of an electrical vehicle for wireless charging, charging station position navigation, offline data download, vehicle data storage and fault online diagnosis are realized by the user through the intelligent guide terminal.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Expansion valve components, one-way expansion valve and two-way circulation expansion valve

The invention provides expansion valve components, a one-way expansion valve and a two-way circulation expansion valve, belonging to the technical field of refrigeration of variable frequency air conditioners. The invention solves the problem that the service life of a valve is shortened due to frequent abrasion of the conventional valve cores and the conventional vale bases. The two-way circulation expansion valve comprises a valve block which is provided with two parallel channels, wherein each channel is provided with an inlet end and an outlet end; an expansion valve component which is provided with a damping structure is connected to each outlet end; a bypass hole for communicating an outlet of the expansion valve component on one channel with the inlet end of the other channel is formed in the valve block; and a protection cover for preventing a medium from being leaked when flowing through the bypass hole and the outlet is welded at each outlet end. The two expansion valve components are arranged in parallel to ensure that a function of two-way circulation is realized; and the movement of a valve core is reduced by the damping structures, so that the service life of the expansion valve components is prolonged and the energy efficiency ratio of the expansion valve components is improved, thereby being of great significance for energy conservation and emission reduction.
Owner:浙江泽顺制冷科技有限公司

Photovoltaic grid connected inverter with reverse connection prevention function and control method therefor

The invention discloses a photovoltaic grid connected inverter with a reverse connection prevention function. The photovoltaic grid connected inverter comprises an inverter unit, a control unit, a filter capacitor and a reverse connection prevention unit; the reverse connection prevention unit is connected with an input end of the inverter unit; and the filter capacitor is bridged between two input ends of the inverter unit. The photovoltaic grid connected inverter also comprises a voltage sampling circuit which is connected with the control unit by signal and is used for sampling voltages at the two ends of the filter capacitor and transmitting the sampling results to the control unit; the reverse connection prevention circuit comprises a current limiting resistor, a reversion prevention diode and a bypass controllable switch; the current limiting resistor is connected in series with the reversion prevention diode; the bypass controllable switch is connected in parallel with a series circuit formed by the current limiting resistor and the reversion prevention diode; and the control end of the bypass controllable switch is connected with the control unit by a signal. The invention also discloses a control method for the photovoltaic grid connected inverter. Compared with the prior art, the photovoltaic grid connected inverter has the advantages of simple structure, safety, high reliability, low requirement on components, and the like.
Owner:CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)

Exoskeleton device suitable for supporting of radiation-proof clothes

ActiveCN106493715AReduce the burden on the human bodyReduce shockProgramme-controlled manipulatorSacroiliac jointHinge angle
The invention discloses an exoskeleton device for supporting of radiation-proof clothes. The device mainly comprises a shoulder mechanism, a waist mechanism and a leg mechanism; the shoulder mechanism comprises a pair of back supporting rods, a fixed transverse rod, a guiding piece and a pair of flexible straps fixed on the back supporting rods, and the fixed transverse rod and the guiding piece are arranged between the back supporting rods; the waist mechanism comprises waist supporting rods, a flexible waistband mounted on the waist supporting rods and two straight cylindrical tension springs, and one end of one straight cylindrical tension spring and one end of the other straight cylindrical tension spring are fixed on the left side and the right side of the waist supporting rods; and the leg mechanism comprises straight thigh supporting rods arranged at the upper ends of automatic switching devices and the automatic switching devices arranged between the straight thigh supporting rods and straight shank supporting rods. The exoskeleton device is a purely passive supporting structure, supporting and assisting of various moving joint parts are realized through springs and hinges, spring-slider mechanisms at knee joints can further realize switching of supporting modes, and the device can show good effects in staying operation, squatting operation and natural walking states.
Owner:SOUTHEAST UNIV

Impact reducing tail-section linear explosion separating device for small-diameter assisted takeoff rocket

ActiveCN103673786AReduce shockImprove the space environmentSelf-propelled projectilesTakeoffEngineering
The invention relates to an impact reducing tail-section linear explosion separating device for a small-diameter assisted takeoff rocket. The impact reducing tail-section linear explosion separating device comprises a detonator, a split type detonating connector, an impact reducing shell, an explosive fuse, a glass protective cover and energy absorption pads. The split type detonating connector comprises a detonating mounting seat, transition studs and an explosion connector, the impact reducing shell comprises an upper shell, impact reducing pads and a lower shell, and a particular connection relation includes that the impact reducing pads are placed between an end frame of the upper shell and an end frame of the lower shell and are fixedly connected with the upper shell and the lower shell by the end frame of the upper shell and the end frame of the lower shell; an outer mounting surface of the protective cover and the inner surface of the lower shell are matched with each other to be radially positioned, and a positioning ring of the protective cover and a positioning surface of the lower shell are matched with each other to be axially positioned; the explosion connector is connected with the protective cover and the lower shell, the detonating mounting seat is mounted on the end frame of the upper shell, lower threaded rods of the transition studs are screwed into the explosion connector, and upper cylinders of the transition studs are connected with the detonating mounting seat. The impact reducing tail-section linear explosion separating device has the advantages that the separating device is small in structure dimension, convenient to mount and check and high in separation efficiency and safety performance, and has an excellent heat environment, and separation impact can be greatly reduced.
Owner:BEIJING INST OF ASTRONAUTICAL SYST ENG +1

Intelligent plant protection drone

The invention discloses an intelligent plant protection drone. The intelligent plant protection drone comprises a drug box and rotary wing supporting frames. A plurality of mounting plates are arranged on the outer side of the drug box, the rotor wing supporting frames are mounted on the drug box through the mounting plates, rotor wings are mounted at the outer ends of the rotary wing supporting frames, distance measuring sensors are arranged at the lower ends of the rotor wings, infrared cameras are arranged on the outer sides of the rotor wings, a route calculating meter and a master controller are arranged on the drug box, the distance measuring sensors, the infrared cameras, and the output end of the route calculating meter are all electrically connected with the input end of the master controller, a drug spraying pump is arranged at the lower end of the drug box, a drug delivery pipe is arranged at the output end of the drug spraying pump, a centrifugal nozzle is arranged at the lower end of the drug delivery pipe, a standard drug application controller is arranged on the lower portion of the outer side of the drug box, a GPS is arranged on the standard drug application controller, the standard drug application controller is connected with an electronic speed controller of the drug spraying pump through a signal line, and buffer devices are bilateral-symmetrically arranged at the lower end of the drug box. The intelligent plant protection drone is simple in structure, convenient to use, various in function, high in intelligence degree, and long in service life.
Owner:HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD

Topological structure of hybrid direct-current power transmission system based on auxiliary power supply and starting method

The invention relates to a topological structure of a hybrid direct-current power transmission system starting way and a staring method, in particular to a topological structure of a hybrid direct-current power transmission system based on an auxiliary power supply and a starting method. The topological structure is specific to a dual-end large power grid hybrid direct-current system; a VSC (Voltage Source Converter) is adopted on a rectifying side; an LCC converter is adopted on an inversion side; a starting power supply constructed by an uncontrolled rectifying device is connected in parallel to the middle of a direct-current circuit. The starting process of the system is completed by establishing direct-current voltage firstly by using a starting power supply. The topological structure has the advantages that 1, the problem of the lack of starting direct-current voltage can be solved effectively when the topological structure is applied to the starting process of a practical dual-end large power grid hybrid direct-current transmission system; 2, due to the adoption of the starting method, impacts of system voltage and current can be reduced effectively in a starting process, and the safety of power equipment is protected.
Owner:WUHAN UNIV

Primary edge control type switch power supply with high-precision constant-voltage/constant-current output and high-pulse-frequency (PF) value

The invention discloses a primary edge control type switch power supply with high-precision constant-voltage/constant-current output and a high-pulse-frequency (PF) value. The primary edge control type switch power supply comprises an electromagnetic interference and filtering circuit, a rectifying filtering circuit, a transformer, a voltage stabilizing buffer circuit, a filtering shaping output circuit, a metal oxide semiconductor (MOS) tube, a sampling resistor and a constant-voltage and constant-current pulse frequency control (PFC) driving module, wherein the voltage stabilizing buffer circuit, the filtering shaping output circuit, the MOS tube, the sampling resistor and the constant-voltage and constant-current PFC driving module are connected in parallel with the transformer. The primary edge control type switch power supply has the advantages that the transformer primary edge is detected and is fed back to a PFC control chip, and a pulse frequency modulation (PFM) mode is adopted, so high-precision current and voltage can be output. Compared with the traditional driving circuit, the primary edge control type switch power supply has the advantages that peripheral devices such as optical couplers and the like are omitted, so a peripheral circuit is simpler, the PF value and the electric work efficiency of the whole power supply are obviously improved, and the primary edge control type switch power supply has the obvious characteristics that the periphery circuit is simple, the cost is low, and the performance is high. The large-scale popularization and application can be easily realized.
Owner:江苏晟芯微电子有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products