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58results about How to "Direct transfer" patented technology

Interstellar transfer finite thrust injection iterative guidance method of low thrust-weight ratio aircraft

The invention discloses an interstellar transfer finite thrust injection iterative guidance method of a low thrust-weight ratio aircraft, and belongs to the field of aerospace. The method comprises the steps of establishing a detector kinetic equation under an inertial system of center of mass of the earth; converting the location speed of a detector under the inertial system into an injection point inertial system, and expressing in an orbital element form. Simplifying the detector kinetic equation, controlling the detector according to a guidance strategy, and stopping the guidance when theguidance meets a corresponding terminal condition, then the detector enters an interstellar transfer orbit, and direct transfer of the detector from a near-earth orbit to the interstellar transfer orbit is realized, wherein the corresponding terminal condition is that an engine of the detector meets a power-off condition to establish the detector kinetic equation, solving midcourse correction pulse according to a shooting equation, and performing orbit midcourse correction, so as to enable the detector to reach a target orbit near a target star, so that accurate interstellar transfer with thelow thrust-weight ratio is realized. The interstellar transfer finite thrust injection iterative guidance method of the low thrust-weight ratio aircraft has the advantages of fast calculation speed, good convergence and high applicability.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Digital optical fiber repeater and signal transmission method thereof

InactiveCN103354471ASolve the problem of poor real-time transmission signalDirect transferElectromagnetic repeatersData segmentIntermediate frequency
The invention discloses a digital optical fiber repeater and a signal transmission method thereof. The method comprises the following steps that a near-end machine of the digital optical fiber repeater converts a downlink network signal into an intermediate frequency signal; the near-end machine packages the intermediate frequency signal into a CPRI frame signal according to a CPRI protocol; the near-end machine sends the CPRI frame signal to a remote terminal of the digital optical fiber repeater; the remote terminal detects whether a data link with the near-end machine is connected; if the data link of the remote terminal and the near-end machine is connected, the remote terminal acquires the intermediate frequency signal in the CPRI frame signal; and the remote terminal fills the acquired intermediate frequency signal into an IQ data segment. Through the method of the invention, the intermediate frequency signal is directly packaged into the CPRI frame signal and transmission is performed; frequency mixing is not needed and all the carrier frequency signals do not need to be moved to a base band so that a processing step before the transmission is reduced and real-time performance of the signal transmission is increased.
Owner:北京裕源大通科技股份有限公司

All-plastic optical fiber radio broadcast communication system and implementation method thereof

The invention discloses an all-plastic optical fiber radio broadcast communication system and an implementation method thereof. The system comprises a central route station and one or more remote antenna units, wherein a plastic passive optical splitter is arranged between the central route station and a remote antenna, the central route station is connected with the passive optical splitter through a plastic optical fiber, and one or more remote antenna units are connected with the plastic passive optical splitter through the plastic optical fiber. According to the invention, by adopting a vertical-cavity surface-emitting laser in a red light waveband, and utilizing amplification effect of a light transmission window for the plastic optical fiber and a plastic passive light split machine, and a snow slide photoelectric receiver, vices of large loss and large dispersion of a medium are overcome, the short-distance, high-quality and safe radio frequency signal transmission is realized, and compatibility of different communication and broadcast standards is ensured by utilizing transparence of an optical fiber about a protocol. In addition, according to the invention, a system framework is greatly simplified, the integrated cost of a product is reduced, and the utilization efficiency of the device is improved.
Owner:杨帆

Paper cup online collecting and automatic packaging device

The invention discloses a paper cup online collecting and automatic packaging device, and relates to the technical field of paper cup automatic production equipment. The paper cup online collecting and automatic packaging device solves the problems that a sliding groove is difficult to adjust and the function is limited due to the fact that a paper cup with higher height cannot be met, the paper cup online collecting and automatic packaging device comprises a glass guide pipe, a rack, a sorting mechanism, a transferring mechanism and a bagging mechanism, wherein the glass guide pipe is used for outputting paper cup finished products, the sorting mechanism comprises a sorting turntable and two cup collecting cages, wherein the sorting turntable is rotationally arranged on the rack, and a guide outlet is formed in one side, away from each other, of the two cup collecting cages. The paper cup finished products in the cup collecting cage are directly transferred from the cup collecting cage to the placing table, so that the paper cup finished products with different stacking heights can be transferred, the situation that the paper cup finished products are clamped in the cup collectingcage is effectively reduced, the paper cup finished products with different stacking heights can be rapidly packaged, the function is more complete, and the production efficiency is higher.
Owner:武汉丽诺工贸有限公司

Compatible type non-standard bit wide serial perimeter interface and data transmission method among interfaces

The invention relates to a compatible non-standard bit wide serial peripheral interface and a data transmission method between interfaces. The interface comprises data transmission registers with 128 bits of bit-width, a data receiving register and a shift register with 8 to 128 bits of bit-width; the method comprises the following steps: the obtained data is copied to the shift register through the data transmission registers; at the moment of jumping of the current clock signal, the transmission bit of the shift register transmits one bit data, the rest data is moved for one bit towards the direction of the transmission bit in sequence, and the receiving bit receives one bit data; whether the shift register receives electrical level of the full signal is detected; the shift register transmits the received data to the data receiving register; whether the data received by all the data transmission registers are fully copied to the shift register is detected. The interface and the data transmission method have the advantages that the data with unfixed bit-width and to be transmitted can be transmitted under the unpacked condition within the range of 128 bits, the transmission time is shorter, the operation is also more convenient, and the interface and the data transmission method can be widely applied to the communications system.
Owner:RDA MICROELECTRONICS SHANGHAICO LTD

Optical module

The invention discloses an optical module. The optical module comprises an upper shell, a lower shell, a circuit board, a lens assembly and a clamping jaw assembly, and the lens assembly is arranged at the end, close to an optical port of the optical module, of the circuit board; the clamping jaw assembly is arranged at the optical port of the optical module, one end of the clamping jaw assembly is directly connected with the lens assembly, and the other end of the clamping jaw assembly is connected with an external optical fiber; the clamping jaw assembly comprises a clamping jaw and a shielding plate connected with the clamping jaw, a first limiting piece is arranged on the lower shell, a second limiting piece is arranged on the clamping jaw, and the first limiting piece is embedded in the second limiting piece; and a first positioning piece is arranged in the first limiting piece, a second positioning piece is arranged on the side face, provided with the second limiting piece, of the clamping jaw, and the second positioning piece is inserted into the first positioning piece. According to the optical module, the lens assembly is arranged at the end, close to the optical port of the optical module, of the circuit board, direct connection between the external optical fiber and the lens assembly is achieved through the clamping jaw assembly fixed to the shells, an optical fiberribbon is not needed, space is saved to a certain degree, and further development of the optical module is facilitated.
Owner:HISENSE BROADBAND MULTIMEDIA TECH

Wired transmission system for model control and method for realizing system configuration

The invention discloses a wired transmission system for model control and a method for realizing system configuration. The system comprises an upper computer, an interface unit and a model control unit, wherein the model control unit comprises a main control unit, a storage unit, a signal amplification unit, a motor control unit, an information acquisition unit and an audio processing unit; the upper computer is connected with the interface unit through a wired manner; the interface unit transmits data to the storage unit; the main control unit reads the data in the storage unit; a control signal output end of the main control unit is connected with an input end of the motor control unit; an output end of the motor control unit is connected with a motor; an audio signal output end of the main control unit is connected with an input end of the audio processing unit; an output end of the audio processing unit is connected with a loudspeaker; a driving signal output end of the main control unit is connected with an input end of the signal amplification unit; and an output end of the signal amplification unit is connected with the main control unit. The system is capable of improving the data transmission efficiency.
Owner:CHENGDU DAIRUISI INTELLIGENT CONTROL TECH CO LTD

A push-pull DC autotransformer

The invention discloses a push-pull DC autotransformer, which includes first, second and third power exchange units and positive and negative four-winding transformers, wherein the positive two ports of the first power exchange unit are connected to the positive pole of the second DC system The two negative ports of the first power exchange unit are connected to the two positive ports of the second power exchange unit through the positive four-winding transformer, and the two positive ports of the third power exchange unit are connected to the second power exchange unit through the negative four-winding transformer. The two ports of the negative pole of the exchange unit are connected, the positive poles of the four-winding transformer windings 1 and 2, the negative poles of the windings 3 and 4, and the positive pole of the first DC system are interconnected together, and the negative poles of the four-winding transformer windings 1 and 2 are interconnected. , the positive poles of the third and fourth windings, and the negative pole of the first DC system are interconnected together. The converter of the invention adopts the DC auto-coupling technology, which significantly reduces the commutation capacity, operation loss and total cost of the system.
Owner:HUAZHONG UNIV OF SCI & TECH

Iterative guidance method for interstellar transfer limited thrust into orbit of low thrust-to-weight ratio vehicle

ActiveCN109911249BDirect transferLarge convergence rangeSpacecraft guiding apparatusStarwispFlight vehicle
The invention discloses an interstellar transfer finite thrust injection iterative guidance method of a low thrust-weight ratio aircraft, and belongs to the field of aerospace. The method comprises the steps of establishing a detector kinetic equation under an inertial system of center of mass of the earth; converting the location speed of a detector under the inertial system into an injection point inertial system, and expressing in an orbital element form. Simplifying the detector kinetic equation, controlling the detector according to a guidance strategy, and stopping the guidance when theguidance meets a corresponding terminal condition, then the detector enters an interstellar transfer orbit, and direct transfer of the detector from a near-earth orbit to the interstellar transfer orbit is realized, wherein the corresponding terminal condition is that an engine of the detector meets a power-off condition to establish the detector kinetic equation, solving midcourse correction pulse according to a shooting equation, and performing orbit midcourse correction, so as to enable the detector to reach a target orbit near a target star, so that accurate interstellar transfer with thelow thrust-weight ratio is realized. The interstellar transfer finite thrust injection iterative guidance method of the low thrust-weight ratio aircraft has the advantages of fast calculation speed, good convergence and high applicability.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

A train collision avoidance method and system in a vehicle-to-vehicle communication state

The train collision avoidance method and system under the vehicle-to-vehicle communication state provided by the embodiments of the present invention include: establishing a wireless communication connection with the preceding train adjacent to the same running track; receiving the first current speed transmitted by the preceding train and the first current acceleration information; according to the first current speed and the first current acceleration information, combined with the second current speed and the second current acceleration information of the following train, the following train is used as the following target to construct the following Model; according to the early warning information fed back by the car-following model, determine the operation and collision avoidance plan. The train collision avoidance method and system provided by the embodiments of the present invention realize the direct transmission of front and rear train information, reduce the dependence on the ground train control system, and improve the operating efficiency of the line; and according to the distance, speed and acceleration of the front and rear two cars Information is used to control train operation, thereby realizing collision avoidance between trains and improving the safety level of train operation.
Owner:通号城市轨道交通技术有限公司
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