20results about How to "Avoid coupling" patented technology

The application provides a multi-intention interactive game decision method and system for automatic driving path planning, which fuses current environment information and current state information by acquiring the current state information and the current environment information, extracts state features and intention features of a moving target from current scene features, fuses the intention features of the state features of the moving target, constructs a game relationship graph, calculates attention weights between an automatic driving vehicle and the moving target, weights and aggregates a value vector by a prediction probability and the attention weights of different preset intention features executed by the automatic driving vehicle, performs feature splicing, nonlinear conversion and decoding on the aggregated features, evaluates each game candidate trajectory, and selects a game candidate trajectory with the maximum game value score as the automatic driving path; the application reduces uncertainty in the interactive process, avoids the risk of sudden braking or collision caused by misjudgment, and has stronger environmental adaptability and generalization ability.

The utility model discloses a terminal protection device and a terminal, and belongs to the technical field of terminals. A first position of an antenna section in the terminal is connected with a grounding switch in the protection device, and the first position is located at a non-endpoint position of the antenna section; the protection device obtains the use condition of the antenna section, wherein the use condition comprises power and / or temperature; and under the condition that the use condition meets an antenna protection condition, the grounding switch is switched on to change the working frequency of the antenna section, and the antenna protection condition comprises that the power exceeds a power threshold value and / or the temperature exceeds a temperature threshold value. Namely, the grounding switch is connected to the first position of the antenna section in the terminal, so that the grounding switch is switched on under the condition that the terminal needs to be protected, the working frequency of the antenna section is changed, the resonance state of the antenna section is broken, the antenna section is prevented from being coupled with high-intensity electromagnetic waves, and the antenna section is prevented from being heated and damaged.

The invention discloses a laboratory sunlight energy-saving illumination management system, belongs to the technical field of energy-saving illumination, and solves the problems that a solar simulator bus is out of control due to bidirectional power conflict, an experiment is failed due to light ripple pollution, and energy conservation is more wasted. Comprising a multi-phase magnetic energy cyclic matrix module which generates a controlled multi-phase alternating current energy field; the rotating field transformer energy transfer device module is used for directionally distributing energy in a multi-phase alternating current energy field to each output channel according to a real-time instruction; the distributed virtual ground bus framework module is used for maintaining the power supply reference potential of each output channel; and the digital pre-distortion compensator module is used for performing nonlinear and memory effect compensation on an input instruction and sending the compensated instruction to the multi-phase magnetic energy cyclic matrix module. According to the invention, the rotating magnetic field is coupled with the distributed wireless energy network to decouple the power flow, the noise is suppressed, the spectrum is independent, the energy is saved, and repeated experiments are avoided.

The invention relates to a satellite-borne receiving device and a signal receiving method for resisting malicious interference of an LEO satellite uplink. The satellite-borne receiving device comprises a beam forming network which is used for generating an LEO satellite beam pointing to a target area, receiving an uplink signal sent by a user, reducing the dimension of the uplink signal into an N-dimensional link receiving signal and outputting the N-dimensional link receiving signal; and the square phase shifter network is used for performing interference elimination on the received signals of the links, generating processing signals of the corresponding links and outputting the processing signals to the digital processing unit for signal estimation, and the processing signals output by each link are aggregation of the received signals of all the links after phase shifting. According to the invention, the analog front end with a two-stage structure is designed, so that the function decoupling of beam forming and interference elimination is realized, the interference is completely eliminated at the analog front end, and the algorithm complexity is reduced at the same time.

The utility model provides a charger, which is helpful for realizing compact design of each part in the charger, fully utilizing limited space and further helpful for the development of the charger towards the miniaturization direction. Meanwhile, the transformer and the AC pin are separated through the first capacitor, electromagnetic interference generated by an electronic component can be effectively prevented from being coupled to the AC pin in the charging state, the electromagnetic interference is further prevented from influencing the mains supply through the AC pin, and the charging performance of the charger is guaranteed; noise generated during operation of electronic components can be isolated, the noise is prevented from being radiated to the surrounding environment, the operation noise of the charger in the charging state is reduced, and the user experience is improved.

The present application relates to the intelligent control technology field of continuous production and chemical process of petroleum cementing additives, in particular to a continuous production big data analysis and regulation method for high-temperature stabilizer of cementing slurry, comprising: collecting process state time series data and synchronous control instruction data of a reaction kettle, a jacket heat exchange loop, a stirring driving part and an online viscosity detection part and aligning; constructing a normal working condition benchmark model based on polymerization kinetics constraints and jacket heat exchange heat balance constraints; loading disturbance parameter forward deduction to generate a set of theoretical abnormal states; determining a target abnormal state through similarity calculation of real residual vector and theoretical residual vector set; generating and outputting regulation instructions to a control execution end; the present application realizes stable closed-loop regulation and control of the continuous production process, and reduces the risk of single-point threshold misregulation.

This utility model discloses a light source module and a fiber optic scanning display device. The light source module includes: a light source; a pigtail disposed in the outgoing light path of the light source; the pigtail includes a fiber optic fixing structure and a fiber; the fiber protrudes from the end face of the fiber optic fixing structure, and the fiber coupling end face is an inclined end face. In the above solution, by having the fiber protrude from the end face of the fiber optic fixing structure, stray light caused by the adhesive used to bond the fiber can be avoided, thereby reducing image stripes and noise caused by the back-propagation of stray light into the laser, thus alleviating the technical problem of image quality defects existing in the prior art and achieving the technical effect of improving image quality.

The application provides an electronic device, which comprises an antenna radiator, a first feeding port, a second feeding port, a ground plate and a conductor; a first end of the antenna radiator is electrically connected to the ground plate through the conductor; the first feeding port is arranged at a second end of the antenna radiator and is electrically connected to the second end of the antenna radiator, and is used for forming a first antenna; the second feeding port is arranged at a low-resistance area of the antenna radiator and is electrically connected to the low-resistance area of the antenna radiator, and is used for forming a second antenna; wherein the first antenna and the second antenna are antennas in the same frequency band.

The application belongs to the technical field of catalyst material preparation, and provides a single-atom porous material catalyst, a preparation method thereof and application of the single-atom porous material catalyst in a methane aerobic conversion reaction. The application introduces reaction gas containing a gaseous metal precursor, a carbon source and a nitrogen source into a plasma reaction chamber, and uses plasma for chemical vapor deposition to obtain the single-atom porous material catalyst. The preparation method provided by the application can select gaseous, liquid or solid raw materials as a source of the gaseous metal precursor. The application can prepare various types of single-atom porous material catalysts, and enriches the application range of the single-atom porous material catalysts. The application realizes control of the particle size, morphology and distribution of the single-atom porous material catalyst by adjusting reaction parameters, and the prepared single-atom porous material catalyst can be used in the methane aerobic conversion reaction. Therefore, the preparation method provided by the application is simple in operation, strong in universality and has a good industrial application prospect.

The utility model discloses a double-chamber circulating flow guide CPU water-cooling radiator, which comprises a water-cooling head, a circulating pipeline and a water pump, and is characterized in that a main chamber and an auxiliary chamber which are mutually independent are arranged in the water-cooling head, a cold discharge piece connected with the main chamber and the auxiliary chamber is embedded on the outer side of the water-cooling head, a wavy flow guide plate is arranged in the auxiliary chamber, and the water pump is connected with the main chamber and the auxiliary chamber. The main cavity and the auxiliary cavity are communicated through the flow guide plate to form a circulation path, a heat absorption substrate making contact with a CPU is arranged at the bottom of the main cavity, and the circulation pipeline is communicated with the main cavity, the auxiliary cavity and the water pump to form a double-cavity circulation flow guide structure. Through double-cavity independent flow guide, intelligent flow control, efficient heat exchange structure design and visual monitoring, the heat dissipation efficiency and reliability are remarkably improved, and the heat dissipation requirement of a high-performance CPU is met.

The application discloses a kind of multi-in-one integrated electric drive, noise reduction design method and electric forklift in the field of electric forklift integrated electric drive.The multi-in-one integrated electric drive includes two-in-one high-speed reducer, the two-in-one high-speed reducer includes reducer shell, walking gear train and hydraulic gear train, first chamber and second chamber are formed in reducer shell independently, by walking gear train and hydraulic gear train are respectively arranged in first chamber and second chamber, can effectively avoid the loss of two simultaneous work stirring oil turbulence.Through setting stator installation stopper, rotor installation bearing chamber and bolt hole in the side of reducer shell, walking motor and hydraulic motor are simultaneously integrated and installed on reducer shell, the front end cover of motor in traditional forklift multi-in-one assembly is saved, effectively save forklift installation space.The noise reduction design method proposed in the application can significantly improve the NVH performance of integrated electric drive.

The utility model discloses a dual-driving-part Lissajous optical fiber scanner, which comprises a cylindrical piezoelectric actuating part, a sheet-shaped piezoelectric actuating part and an optical fiber, and is characterized in that at least one of the left side and the right side of a piezoelectric material cylindrical body is provided with a correspondingly matched electrode, and the front end of the piezoelectric material cylindrical body is driven to vibrate left and right along the horizontal direction; the left side wall and the right side wall of the piezoelectric material barrel-shaped body are both provided with installation grooves used for being connected with the sheet-shaped piezoelectric actuating parts. The sheet-shaped piezoelectric actuating parts and the overlapping parts enable the inherent frequency of a combined part composed of the piezoelectric material barrel-shaped body, the sheet-shaped piezoelectric actuating parts and the optical fibers in the horizontal direction to be larger than the same-order inherent frequency in the vertical direction. According to the invention, the vibration frequencies of the combined part in two directions meet the requirements of Lissajous scanning working conditions by adjusting the appearance structure and / or size parameters of the sheet-shaped piezoelectric actuating part, the requirements of the processing size and precision of the cylindrical body are reduced, the processing difficulty of the cylindrical body is low, the processing error is easy to control, and the yield is high.

The application discloses a Lissajous optical fiber scanner with a combined cylindrical body, which comprises a cylindrical body and an optical fiber, the cylindrical body is composed of a base body with an upper opening and a support plate for sealing the upper opening of the base body, and the part, connected with the base body, of the support plate and the base body form a cylindrical overlapping part. At least one of the left side and the right side of the barrel-shaped overlapping part is provided with a correspondingly matched electrode to drive the front end of the barrel-shaped body to vibrate left and right in the horizontal direction, and at least one of the upper side and the lower side of the barrel-shaped overlapping part is provided with a correspondingly matched electrode to drive the front end of the barrel-shaped body to vibrate in the vertical direction. The supporting plate enables the inherent frequency of the combination part formed by the cylindrical body and the optical fiber in the horizontal direction to be larger than the same-order inherent frequency of the combination part in the vertical direction. The Lissajous scanning working condition requirement is met by adjusting the appearance structure and / or size parameters of the supporting plate, so that the cylindrical body is low in machining difficulty, machining errors are easy to control, and the yield is high.

The invention discloses a double-layer magnetic resonance radio frequency receiving coil array, and belongs to the technical field of magnetic resonance imaging. According to the coil array, the problem of signal attenuation caused by the fact that an existing single-layer receiving coil cannot be tightly attached to the human body is solved, and potential safety hazards caused by the fact that a wireless coil is inserted into the single-layer receiving coil are avoided. An inner-layer coil and outer-layer coil structure is adopted, the inner-layer coil can be tightly attached to subjects of different body types so as to directly receive signals, and the outer-layer coil efficiently receives signals from the inner layer through inductive coupling. According to the design, the safety in the radio frequency emission period is ensured through a detuning protection mechanism, and efficient transmission of magnetic resonance signals is achieved by optimizing the distance and the coupling state between the inner layer coil and the outer layer coil. By applying the coil array, the image signal-to-noise ratio and the image signal-to-noise ratio after parallel imaging acceleration can be remarkably improved under the condition that the number of receiving channels is the same or smaller, particularly, the imaging effect of a small-size subject is remarkably improved, and meanwhile good compatibility with an existing magnetic resonance system is kept.

The invention discloses a coaxial main rotor-double vector slave rotor heterogeneous multi-rotor layout, and relates to the technical field of unmanned aerial vehicle aircraft design, the layout comprises a coaxial main rotor system arranged in the middle of a fuselage and used for providing main lift force; the two vector slave rotor systems are symmetrically arranged on the two sides of the fuselage and used for providing control torque; an upper rotor wing and a lower rotor wing in the coaxial main rotor wing system rotate in opposite directions so as to counteract the reverse torsional moment; the vector slave rotor system has a tilting function and can change the pulling force direction of the vector slave rotor system; the flight control of the unmanned aerial vehicle is realized by coordinating and adjusting the rotating speeds and vectors of all the rotors from the tilting angle of the rotor system. Through the function decoupling design, unification of high aerodynamic efficiency and strong control capability is achieved.

This application discloses a dual-drive Lissajous fiber optic scanner, comprising a cylindrical piezoelectric actuator, a sheet-like piezoelectric actuator, and an optical fiber. The cylindrical piezoelectric actuator includes a piezoelectric material cylindrical body, with a first inner electrode and a first outer electrode correspondingly arranged on at least one of its left and right sides. The rear end of the sheet-like piezoelectric actuator is attached to the upper or lower surface of the piezoelectric material cylindrical body. The combined portion, consisting of the piezoelectric material cylindrical body, the sheet-like piezoelectric actuator, and the optical fiber, has a difference between its U-order natural frequency (closest to its V-order natural frequency in the horizontal direction) and the V-order natural frequency in the horizontal direction. This application utilizes the adjustment of the shape and / or dimensional parameters of the sheet-like piezoelectric actuator and the overlapping portion to ensure good scanning performance while preventing coupling of vibrations in the two directions of the combined portion.

The invention provides a helium liquefying device and method. The helium liquefying device comprises a helium circulating compressor unit, a heat exchange unit and a first throttling valve. An outlet of the helium circulating compressor unit is communicated with a high-pressure-side refrigerating helium inlet of the heat exchange unit, a high-pressure-side refrigerating helium outlet of the heat exchange unit is communicated with an inlet of the first throttling valve, and an outlet of the first throttling valve is communicated with a low-pressure-side refrigerating helium inlet of the heat exchange unit. A low-pressure side refrigeration helium outlet of the heat exchange unit is communicated with an inlet of the helium circulation compressor unit to form a helium refrigeration circulation loop; a to-be-liquefied helium inlet and a liquid helium outlet of the heat exchange unit are connected to a helium source and a liquid helium storage tank respectively to form a helium liquefaction pipeline. Helium refrigeration circulation and a helium liquefaction pipeline are isolated from each other, coupling is prevented, a helium refrigeration circulation loop is prevented from being affected by pressure change of the liquid helium storage tank, the control difficulty of the helium liquefaction device is lowered, and the system stability and the raw gas liquefaction rate are improved.

The application discloses a variable fixed-wing aircraft for an air-land hybrid robot and belongs to the technical field of air-land hybrid robots. The variable fixed-wing aircraft comprises an air-land hybrid robot intermediate body, a pair of front engine control devices and a variable back wing device. The front engine control device comprises a two-degree-of-freedom control mechanism and a front aero-engine. The variable back wing device comprises a foldable wing, a wing control lever and a rear aero-engine. The foldable wing comprises a main wing, a left aileron and a right aileron. The rear aero-engine is installed in the middle of the main wing. The front end of the wing control lever is connected with the air-land hybrid robot intermediate body through an X-axis rotary control lever front end servo motor. The rear end of the wing control lever is connected with the main wing through an X-axis rotary control lever rear end servo motor. The aircraft can be assembled and coupled with a humanoid robot body to form an air-land hybrid robot, and has the characteristics of high flight efficiency, low energy consumption and wide application scenarios.

The invention relates to a multimode hollow-core anti-resonance optical fiber. The cladding region comprises an outer cladding, a circular cladding tube, a semi-elliptical cladding tube and an anti-resonance plate; a plurality of circular cladding tubes each attached to the inner surface of the outer cladding; the plurality of circular cladding tubes are arranged along the circumferential direction of the inner surface of the outer cladding, the plurality of circular cladding tubes are uniformly and circumferentially distributed at equal intervals, and the inner surface of the outer cladding except a cladding area is a fiber core area; a semi-elliptical cladding tube is arranged on the outer side of each circular cladding tube, and an anti-resonance plate is arranged in each circular cladding tube; the connecting straight line of the midpoint of the section of the anti-resonance plate and the center of the outer cladding passes through the circle center of the circular cladding tube, the anti-resonance plate coincides with the short axis of the semi-elliptical cladding tube, the diameter of the anti-resonance plate coincides with the diameter of the circular cladding tube, and the short axis of the semi-elliptical cladding tube coincides with the diameter of the circular cladding tube. On the basis of the structure, the invention further provides several alternative schemes, coupling of a high-order mode and a cladding mode of the fiber core can also be avoided, and multimode transmission is achieved.

The utility model discloses an eight-mode multiplexer / demultiplexer based on a refractive index step type elliptical core main channel. According to the multiplexer / demultiplexer, a transmission channel is formed by one eight-mode elliptical fiber core (EC) and seven equal-length single-mode fiber cores; the length of a transmission main channel of the elliptical fiber core is 17.6 mm, the ellipticity rho of the elliptical core is 1.58, the length of a major semi-axis is 7.02 mu m, and the length of a minor semi-axis is 4.44 mu m; the length of the SMF-HG10, the length of the SMF-HG01, the length of the SMF-HG20, the length of the SMF-HG11, the length of the SMF-HG30, the length of the SMF-HG02 and the length of the SMF-HG21 are all 3.8 mm, and the SMF-HG10, the SMF-HG01, the SMF-HG20, the The multiplexer is used for demultiplexing a main channel of the multiplexer, the mode degeneracy of HG30 and HG02 is broken, the refractive index difference between modes is greater than 1 * 10 <-3 >, and the mode preserving function is realized; the refractive index fiber core made of pure silicon dioxide is adopted to reduce loss; the side core is divided into two sections for coupling, so that low-loss low-crosstalk multiplexing and demultiplexing in eight modes are realized, and MIMO-FREE operation is realized.