142results about How to "Avoid bulk" patented technology

The invention discloses a power module and a current converter. The power module comprises a flat plate type radiator on which a plurality of groups of power units are arranged side by side, each power unit comprises an IGBT (Insulated Gate Bipolar Transistor), a driving circuit board, complex busbars, a surge capacitor and an alternating outgoing line copper bar, wherein the IGBT is arranged on the surface of the flat plate type radiator; the driving circuit board is arranged on the IGBT and electrically connected with the IGBT; the complex busbars are arranged on the IGBT and the driving circuit board and consist of a direct current positive copper bar and a direct current negative copper bar which are respectively connected with the IGBT electrically; the surge capacitor is arranged on the complex busbars and electrically connected with the direct current positive copper bar and the direct current negative copper bar on the complex busbars; the alternating current outgoing line copper bar is arranged on the complex busbars and connected with the IGBT electrically; the complex busbars in all power units have an integrated structure. According to the technical scheme, the power module and the current converter are simple in structure, and convenient to realize, and the size of the power module can be effectively reduced.

The invention provides a camera lens group, an image capture device and an electronic device. The camera lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from an object side to an image side. The first lens has positive refractive power, and the object-side surface is convex near the optical axis; the second lens has negative refractive power; the third lens has refractive power; the fourth lens has refractive power, and both the object-side surface and the image-side surface are aspheric surfaces; and the fifth lens has refractive power, the object-side surface is convex near the optical axis, both the object-side surface and the image-side surface are aspheric surfaces, and at least one surface of the object-side surface and the image-side surface is provided with at least one point of inflection. The camera lens group further comprises an aperture, and there is no lens with refractive power between the aperture and the first lens. Under the structural configuration, the beam convergence ability is enhanced, the overall length of the system is controlled effectively, and the configuration of the first lens and the second lens is adjusted to achieve higher resolution in the local scope. The camera lens group, the image capture device and the electronic device of the invention have the beneficial effects of small size and high imaging quality.

Elastic deformation of bridge portions in an externally toothed gear and external teeth is suppressed, and this extends the life of tooth surfaces of external teeth 19, improves vibration characteristics, and markedly increases output torque while preventing a planetary gear device 11 from becoming large in size. To achieve the above, a ratio obtained by dividing the diameter D of each of pins constituting internal teeth 14 by the pitch P of the internal teeth 14 is made smaller to an extent where tooth tops 19a of the external teeth 19 are radially outside the inner periphery 15a of an internally toothed gear 15. Alternatively, a meeting point C where action lines S of reaction force K of drive force components meet is moved more radially outward compared with a known eccentric oscillating-type planetary gear device so as to be positioned between a pin circle P passing the centers of all the internal teeth (pins) 14 and an outer end passing circle G passing radially outer ends of through holes 22. In addition, the amount H of eccentricity of an externally toothed gear 18 relative to an internally toothed gear is set not less than 0.5 times the radius R of the internal teeth (pins) 14.

The embodiment of the invention discloses a barrage display method, a live broadcasting method and related devices. The barrage display method is applied to a game application in the barrage display device for game live broadcasting. The barrage display method comprises the steps that a game is started in a live broadcasting application, and game pictures of the game application are broadcast in alive mode by means of the live broadcasting application; a private communication channel is built with the live broadcasting application; barrage data acquired by the live broadcasting application isacquired through the private communication channel, wherein the barrage data is comment data published for the game pictures which are broadcast in the live mode by users corresponding to various terminals; and the barrage data is rendered in a graph processing unit (GPU), and the rendered barrage data is superimposed in the current game picture to be displayed. Accordingly, the barrage can be displayed during game live broadcasting, and interaction among the users is enhanced.

The invention provides a grabbing mechanism. The grabbing mechanism comprises an L-shaped plate fixed to the position of a machine frame and further comprises a first displacement mechanism, a second displacement mechanism and a grabbing mechanism body, wherein the second displacement mechanism and the grabbing mechanism body are arranged at the upper end of the first displacement mechanism. The grabbing mechanism is fixed to the position of the machine frame needing to be transferred through the L-shaped plate, then feeding, discharging and grabbing are conducted through the first displacement mechanism, the second displacement mechanism and the grabbing mechanism body, the production efficiency is improved advantageously, and the production cost is reduced. Two pushing air cylinders are arranged in the position of the second displacement mechanism of the grabbing mechanism, the defect that the stroke of a traditional single air cylinder is short is overcome, the situation that the size of the grabbing mechanism is too large is avoided, the production cost is reduced, in addition, the structure of the grabbing mechanism is stable, and the service life of the grabbing mechanism is prolonged advantageously.

The invention provides a method for detecting a yaw angle between a tractor and a trailer. The method comprises the following steps that, a detection board is arranged in front of a trailer, a plurality characteristic patterns are arranged in the front face of the detection board, and a camera is arranged in the rear face of the tractor and can be used for shooting at least one characteristic pattern on the detection board at an arbitrary yaw angle; under the situation of no yaw between the trailer and the tractor, and the camera is used for shooting the detection board to calculate an initialtransformation matrix; the characteristic patterns on the detection board are shot by the camera in a vehicle driving process; at least four characteristic points are extracted from each shot characteristic pattern; the current transformation matrix is calculated; and the yaw angle between the tractor and the trailer is calculated. The method is suitable for types of various trailers, including full trailers and semitrailers, has relatively low calculation strength, can realize real time, and can run under an extreme work condition (low light condition).

The invention discloses a robot structure, comprising a first shaft subassembly, a second shaft subassembly and a third shaft subassembly which are mutually pivoted and rotatable relatively, a first wrist unit at a pivoting part between the first shaft subassembly and the second shaft subassembly, and a second wrist unit at a pivoting part between the second shaft subassembly and the third shaft subassembly, wherein the first wrist unit comprises a first driving piece for driving the first wrist unit, the second wrist unit comprises a second driving piece for driving the second wrist unit, and the second wrist unit further comprises a transmission mechanism for transferring the power of the second driving piece to the second shaft subassembly, the first driving piece and the second driving piece are located at same side of the transmission mechanism, two ends of the second shaft subassembly are both pivoted with the third shaft subassembly, the first driving piece is arranged in the second shaft subassembly, the second driving piece is located in the third shaft subassembly, and the first driving piece and the second driving piece are arranged in a mutually approaching direction. The robot structure has the characteristics of small and smart structure and high carrying capacity.

The invention provides a projection device based on surface emitting laser. The device comprises a surface emitting laser which can emit a needed plane pattern, and an integrated diffractive optical element, wherein the integrated diffractive optical element is arranged at a front end of the surface emitting laser, a surface of the integrated diffractive optical element is provided with an embossed microstructure, the shape of the integrated diffractive optical element is determined by a fused phase transformation function, and the fused phase transformation function is obtained by fusing a lens function of a virtual collimating lens and a phase transformation function of an original diffractive optical element. The invention further provides a manufacturing method of the corresponding projection device based on the surface emitting laser. The device is advantaged in that an entity collimating lens can be omitted, so miniaturization of a projection module is facilitated.

The invention provides a method capable of dynamically loading different terminal exchange chip drives. The method comprises the following steps: supporting the property of a dynamically loadable inner kernel mode driving module by using an embedded operation system platform, packing a terminal exchange chip drive to the inner kernel mode driving module, driving a calling interface in a control software at an ethernet over cable (EoC) head terminal by adopting an abstract terminal exchange chip; and flexibly matching the corresponding actual driving calling interface according to the current connected EoC terminal type under the EoC head terminal and dynamically loading the required exchange chip driving module to realize the control and the management of the EoC terminal. By adopting the invention, the dynamic loading of different types of terminal exchange chip drives can be realized, the separation of a control software code and a terminal exchange chip drive code of the EoC head terminal is realized; and simultaneously, the terminal exchange chip drive is selectively put on the local place or on a remote drive loading server; therefore the problem of the large control software caused by supporting multiple types of exchange chip drives is resolved.

The invention relates to an MXene composite material based electrochemical actuator and a preparation method and application thereof. The MXene composite material based electrochemical actuator comprises two electrode layers and an electrolyte layer, wherein the electrolyte layer is clamped between the two electrode layers to form a sandwich structure; the two electrode layers comprise MXene. TheMXene composite material based electrochemical actuator provided by the invention shows excellent actuation performance, and has the characteristics of large bending deformation, low driving voltage,high response speed, good stability, capability of realizing response to frequency and the like; the MXene composite material based electrochemical actuator can be used as bionic equipment, and can beused as a mechanical claw to realize grabbing of articles, imitate vibration of insect wings, swing of leaves, opening and closing of flowers and the like. In addition, the preparation process of theMXene composite material based electrochemical actuator is simple, and complex equipment is not needed.

The invention relates to an electric-heating smoking set which comprises a light-transmitting hood (1) and a first sheath (4). The first sheath (4) comprises a switch (5) arranged on the side wall ofthe first sheath (4), a battery (3) disposed in the first sheath (4), a front conductive tube (7) and a rear conductive tube (8) which are in electric connection with the battery (3), a first insulating bushing (9) arranged at the downstream of the front conductive tube (7) and a heating element (8) arranged in the first insulating bushing (9), besides, the front conductive tube (7) is arranged ina positioning sleeve (6), the positioning sleeve (6) is communicated with the front conductive tube through an air flow via a first air inlet (13) and a second air inlet (16). Since a heat insulatingring is arranged between the first sheath and the first insulating bushing, a heat insulating cavity is formed, a double heat-insulating protection layer is formed, and heat generated during smokingis prevented from conducting to the first sheath to hurt smokers.

The invention provides a system and method used for perceiving the shape of a medical soft mechanical arm. The system comprises a laser device, a spectrograph, the soft mechanical arm, a sensor and a computer, wherein the laser device transmits a laser signal as an incident signal, the laser signal enters the sensor installed on the soft mechanical arm and forms a reflecting signal, the spectrograph transmitted the received reflecting signal to the computer, and according to the reflecting signal, the computer obtains shape information of the soft mechanical arm by processing. The method comprises the steps of calculating Bragg wavelength of each optical grating according to the deformation quantity of the soft mechanical arm; according to the Bragg wavelength of each optical grating, calculating the curvature and torsion of each optical grating; according to the curvature and torsion of each optical grating, calculating the real-time shape of the soft mechanical arm. According to the system and method, the contrast ratio is high, the realtime performance is good, and meanwhile the problems that a traditional internal sensor is excessively large in size and an internal circuit has potential safety hazards to a patient are solved.

The invention relates to the field of optical fiber joints, in particular to an adapting connector of an optical fiber joint. An optical fiber is connected with the optical fiber joint through the adapting connector to realize light path transmission, and the adapting connector comprises a connecting and fixing end, a connector ceramic insertion core, a connector flange and a spring; the connecting and fixing end comprises a hollow panel and a plurality of clamping buckles; the connector ceramic insertion core and the optical fiber are arranged on the connector flange, and one end of the connector ceramic insertion core is connected with the optical fiber; and both ends of the spring are connected with the connecting and fixing end and the connector flange. Through the design of the adapting connector of the optical fiber joint, the optical fiber is adapted to the optical fiber joint through the adapting connector directly to realize light path transmission, the light path adaption is satisfied, and the problem of too large size of a customized adapter and a standard connector is avoided.

The invention discloses an optical waveguide display device. The device comprises a waveguide element, a coupling-in grating and a coupling-out grating, wherein the coupling-in grating comprises a first diffraction grating, a second diffraction grating and a third diffraction grating which are arranged on the waveguide element in a non-fitting manner, and the first diffraction grating, the second diffraction grating and the third diffraction grating are respectively used for coupling light waves in different wavelength ranges into the waveguide element; three diffraction gratings are arranged in a preset area on a surface of the waveguide element, and the maximum width of the preset area in the length direction of the waveguide element is less than twice the width of a single diffraction grating in the length direction of the waveguide element; and grating vectors of the three diffraction gratings are different, so diffraction directions of the three diffraction gratings to light waves are respectively from the centers of the first diffraction grating, the second diffraction grating and the third diffraction grating to the coupling-out grating. The device is advantaged in that the size of the projection light machine in the length direction of the waveguide element is reduced, and the AR display equipment is convenient to wear. The invention further provides AR display equipment which has the beneficial effects.

The invention relates to a double voltage level compatible receiving remote control command interface circuit for a satellite, and the circuit comprises a high voltage command and low voltage command logic OR circuit formed by isolating diodes, a resistance voltage division circuit, a relay and a coil protecting circuit of the relay. The isolating diodes is connected with the command interface circuit in series, so as to play a role of isolation and protection. The resistance voltage division circuit performs voltage division on an inputted high voltage command signal, so that the actual received transient voltage and steady state voltage on the relay is less than the maximum input voltage of the same, and a low voltage command signal is directly applied to two ends of the relay coil. For avoiding the voltage of the relay coil exceeding to the rated value of the same, the relay coil is connected with a coil in parallel to protect the circuit, when the relay coil is shut off, the protecting circuit clamps the back EMF to restrain a transient effect of the back EMF. According to the invention, the interface circuit can realize a function of compatibly receiving command level of the two voltages, at least a half of relays are saved, the components of the circuit is conventional, the circuit is simple, the availability is good, and the reliability is high.

The invention discloses a displacement determination method and device of a magnetic bearing, a magnetic suspension bearing system, a storage medium and a processor, and the method comprises the steps: constructing a displacement measurement model based on a wavelet neural network, and recording the displacement measurement model as a displacement soft measurement model; under the condition that the current displacement parameter of the magnetic bearing rotor needs to be determined, obtaining the current control current of the magnetic bearing coil; and taking the current control current of the magnetic bearing coil as an input parameter, inputting the input parameter into the displacement soft measurement model, and determining an output parameter of the displacement soft measurement model as a current displacement parameter of the magnetic bearing rotor, thereby realizing determination of the current displacement parameter of the magnetic bearing rotor. According to the scheme, the radial displacement of the magnetic bearing rotor is measured in a soft measurement mode, the falling accident of the magnetic bearing rotor caused by damage of the eddy current sensor when the eddy current sensor is used is avoided, and the suspension safety of the magnetic bearing rotor can be improved.

The invention relates to an electric precipitator. The electric precipitator comprises a housing, an air inlet box, an exhaust box, an insulation box and ash hoppers, wherein the housing is fixed by a housing vertical beam and a housing cross beam; the air inlet box and the exhaust box are arranged at the two ends of the housing; the insulation box and the ash hoppers are arranged on the upper and lower sides on the outer side of the housing respectively; an anode hanging device is arranged in the housing; a flow guiding plate and a flow distribution plate perpendicular to the airflow direction are arranged in the air inlet box; a cathode hanging device is fixed at the upper end of the anode hanging device; the anode hanging device is connected with an anode frame; the anode frame is connected with an anode rapping device; the cathode hanging device is connected with a cathode frame; the cathode frame is connected with a cathode rapping device. Compared with the prior art, the electric precipitator solves the problems that the conventional electric precipitators are low in dust removal efficiency, poor in dust removal effect, slow in dust migration velocity, and much in blowing dust.

The invention provides a driving device used for driving a pantograph. The driving device used for driving the pantograph comprises a linear motor which is installed on a bottom board of the pantograph through a first high voltage isolation device; and one end of the linear motor is a connection board which is hinged to an output shaft of the linear motor through a second high voltage isolation device, the other end of the linear motor is provided with a groove matched with an apex angle of a lower arm rod of the pantograph, wherein the apex angle is close to the connection board, the first side wall of the groove is hinged to the lower arm rod, and the height of the second side wall of the groove is not smaller than one half of the thickness of the lower arm rod. The pantograph is controlled through the linear motor, pantograph ascending and pantograph descending work of the pantograph is achieved as long as a power supply is provided, space occupied by a compressor in a pneumatic method is saved, and therefore, occupied space of the driving device is greatly reduced, and available space inside a vehicle is effectively enlarged. The invention further provides a transport vehicle provided with the driving device used for driving the pantograph.

The invention discloses a low-frequency, large-power underwater sound generator. The low-frequency, large-power underwater sound generator comprises a sound generator casing, wherein one side of the sound generator casing is open; a first vibrating diaphragm and a second vibrating diaphragm are arranged at the opening and closely connected with each other; the first vibrating diaphragm is arrangedon the outer side, and the second vibrating diaphragm is arranged on the inner side; a magnetic material is arranged in the sound generator casing; the outside of the magnetic material is enclosed bya first magnetically conductive material and a second magnetically conductive material; a gap, into which one end of a voice coil can be inserted, is formed between enclosing surfaces of the first magnetically conductive material and the second magnetically conductive material right opposite to the second vibrating diaphragm, and the other end of the voice coil is connected with the second vibrating diaphragm; gaps are formed between the end surfaces on both sides of the first vibrating diaphragm and the second vibrating diaphragm and open walls of the sound generator casing; and the end surfaces on both sides of the first vibrating diaphragm and the second vibrating diaphragm are connected with the open walls through flexible and soft connecting pieces. The underwater sound generator provided by the invention has the advantages that the structure is simple; and the pressure in the casing and the voice coil temperature can be monitored in a real-time manner, so that the voice coil temperature can be effectively reduced, and the service life of the voice coil can be further prolonged.

The invention relates to an anti-abrasion oil-air cylinder and an engineering machine. The anti-abrasion oil-air cylinder comprises a cylinder barrel, a piston rod, a piston and a guide sleeve. The guide sleeve is arranged at the end of the cylinder barrel, and the piston is arranged in the cylinder barrel; one end of the piston rod is connected to the piston, and the other end of the piston rod penetrates out of the guide sleeve; one side of the piston is provided with an air cavity, and the other side of the piston is provided with an oil cavity; an air inlet is formed in the portion, provided with the air cavity, of the cylinder barrel, the air inlet is connected with one end of an air pipe, and the other end of the air pipe is connected to a filter; and the filter is fixedly arranged on the cylinder barrel, and an oil inlet is formed in the portion, provided with the oil cylinder, of the cylinder barrel. According to the anti-abrasion oil-air cylinder and the engineering machine, the filter is arranged on the cylinder barrel, the problem that due to the fact that the filter is independently arranged, the size of the oil-air cylinder is overlarge can be solved, the filter can remove particulate impurities in the air and provide clean air for the air cavity, and the probability that due to the fact that the oil-air cylinder sucks the air with impurity particles in the working process, the abrasion is increased can be avoided.

The invention belongs to the technical field of optical sensing and signal detection, and discloses an integrated coupling module, aiming to solve the problem that an optical fiber gyroscope system and an optical fiber current transformer system cannot be miniaturized and integrated due to the large size of the existing coupler. The integrated coupling module is set in the packaging shell, including a fiber collimator, a first beam splitter, a second beam splitter and a third beam splitter arranged in sequence on the light incident light path of the light source, and also includes respectively arranged on the first beam splitter, Three groups of optical coupling and transmission units on the reflection optical path of the second beam splitter and the third beam splitter; the optical coupling and transmission units are used to transmit the light reflected by the first beam splitter, the second beam splitter and the third beam splitter to the packaging shell The corresponding optical path foldback device outside, and transmit the folded back light to the corresponding detector; the transmittance ratio of the first beam splitter is 2:1, the transmittance of the second beam splitter is 1:1, and the third beam splitter is full negative film.