55results about How to "Implement two-way transmission" patented technology

The invention discloses a high-rigidity and light-weight design method considering uncertainty of a slide block mechanism of a press machine. The high-rigidity and light-weight design method comprises the steps of: establishing a high-rigidity and light-weight design model considering the uncertainty of the slide block mechanism of the press machine; adopting an optimized Latin hypercube sampling method for a test design, obtaining a target function response value corresponding to each sample point through collaborative simulation and building a Kriging agent model; converting an uncertain target function into a certain target function based on an order relation of interval numbers; and calculating a target function interval by utilizing an internal structure analysis way, finding a Pareto optimal solution collection of a converted certain optimal problem by utilizing a multi-target genetic algorithm, if the precision requirement is not satisfied, performing important sampling at the place where the extreme value of the target function interval locates, and updating the target function sample collection and the agent model to perform iterative optimization. The high-rigidity and light-weight design method considering uncertainty of the slide block mechanism of the press machine, disclosed by the invention, has the advantages of establishing the uncertain optimization model of the slide block mechanism according with the practical project for solving and really realizing the light-weight and high-rigidity design of the slide block mechanism.

The invention provides a novel vehicle-mounted charger main circuit of an integrated DC/DC converter and a control loop of the main circuit. The DC/DC converter and a vehicle-mounted OBC are electrically integrated, and the two-way energy transmission of the vehicle-mounted OBC can be achieved; in addition, a synchronous rectification and pulse width modulation (PWM) wave generation control strategy is used on a storage battery side, so that the efficiency of a DC/DC function module is improved to the largest extent. The size of a whole machine is greatly reduced, the cost is obviously reduced, the power density is remarkably improved, and the reliability is further improved.

The invention discloses an audio-video wireless transmission system and a transmission method, wherein, the system comprises a wireless audio-video central station and a wireless audio-video mobile terminal; when the central station and the mobile terminal carry out audio-video wireless transmission by adopting a WLAN transmission channel, the wireless audio-video central station detects the quality of a signal transmitted from the wireless audio-video mobile terminal in real time; when the signal quality is reduced to an early warning value, the two adopt a multicarrier transmission channel, a central station image is synchronously switched to the multicarrier transmission channel; and the WLAN transmission channel keeps monitoring, when the signal quality of the WLAN transmission channel is increased to a preset value, an interface of the WLAN transmission channel is restored, and the multicarrier transmission channel is cut off. The invention organically combines the WLAN and multicarrier proposal together, realizes the full utilization under different source conditions, and reliably realizes the real-time transmission of audio-video and data under the complex environment.

The invention relates to a smart agriculture greenhouse terminal information processing system, which is used for realizing communication and resource sharing between a smart agriculture information system and a greenhouse management information system. The processing system comprises a power source module, an information collecting module, an intelligent analysis module, an information processing module and a communication module, wherein the output end of the information collecting module is connected with the input end of the intelligent analysis module, the output end of the intelligent analysis module is connected with the input end of the information processing module, the output end of the information processing module is connected with the communication module, the communication module is electrically connected with an smart agriculture information platform, the smart agriculture information platform comprises a community resource database, and the community resource database comprises data storage units containing index requirement information of specific crops. The smart agriculture greenhouse terminal information processing system is used for realizing the communication and resource sharing between the smart agriculture information system and the greenhouse management information system.

The invention relates to a probabilistic remote real coefficient quantum state preparation method based on unknown parameter GHZ channel. The method includes the following steps of: sharing two same GHZ entangled states as quantum channels in advance by Alice and Bob as two communication parties and the parameters of the channels are unknown, performing single particle measurement operation and Hmeasurement by Alice, disclosing the results, and performing Bell measurement and H measurement operation by Bob to complete the target of remote state preparation by Alice as a the sender to the receiver Bob. The method mainly includes four steps: (1) a communication preparation stage, wherein Alice is the sender and Bob is the receiver of the communication, and Alice and Bob share two pairs of unknown GHZ states with the same parameters. According to the method, bidirectional information transmission can be realized through Bell measurement, single-particle measurement, H-based measurement and result issuing, thereby making it possible to realize probabilistic-state preparation of the GHZ channel with unknown parameters, in a large extent, it can achieve information transmission in the condition of environmental interference, reduce the interference of quantum communication environment noise to quantum communication, and information distortion reduction.

The invention relates to a data transferring method based on a flow table. The method comprises the steps as follows: the flow table is distributed to a first virtual switch, so that an external interface corresponding to the first virtual switch is configured to receive an ARP request from an external device; the first virtual switch generates a corresponding ARP response to the ARP request basedon the flow table; the external interface receives a data packet from the external device; the condition that a target virtual machine of the data packet is positioned in a physical machine corresponding to a first node; if the target virtual machine is positioned in the physical machine corresponding to a second node different from the first node, the first virtual switch forwards the data packet to a second virtual switch. According to the method provided by the invention, the bidirectional transferring of the data packet between each terminal and the external device can be reliably and efficiently achieved, and the distributed routing communication scheme can work furthest.

The invention discloses a control method of a series compensation double active wireless power transmission system, which comprises the steps that a secondary side sampling circuit collects the phase of AC-side output current i2; a secondary side controller uses a zero-crossing point of the phase of the collected AC-side output current i2 to act as a time reference, adopts an operating mode of combining PLL control and PWM control, calculates a driving signal time sequence of a secondary side full-bridge converter, and realizes output voltage control under a soft switching condition; a primary side controller uses a zero-crossing point of the phase of collected AC-side input current i1, adopts a operating mode of combining PLL control and PWM control, adjusts the duty ratio D1 of a primary side full-bridge converter, enables the phase of the AC-side input current i1 to cross zero when a primary side switching tube is turned on, and realizes soft switching of switching device of the primary full-bridge converter.

The present invention discloses a four-directional conversion vehicle charger. A main transformer comprises 3 windings, a primary winding 1 is an electric supply input side, a secondary winding 2 is apower battery side, and a secondary winding 3 is a vehicle storage battery side. The four-directional conversion vehicle charger can achieve energy bidirectional transmission between an AD input sidepower grid and a DC power battery, can achieve the bidirectional transmission between the power battery pack and the vehicle storage battery to allow the power battery pack and the vehicle storage battery to have redundant power supply functions, namely bidirectional vehicle OBC and bidirectional DC-DC functions to achieve four-directional conversion of energy, specially, the storage battery sidesupplies power to the power battery pack to provide power support for the power battery pack in an emergency so as to improve the reliability and the safety during running of the electric vehicle.

The invention provides a digitalized three-phase system power factor correction apparatus and a correction method. The digitalized three-phase system power factor correction apparatus comprises a power factor correction main circuit, a PFC controller, a PFC driver and an LCD display screen, wherein the power factor correction main circuit comprises an LCL three-phase filter, a three-phase six-switch full-bridge rectification circuit and a DC filtering capacitor, and the PFC controller comprises a simulation voltage and current signal acquisition module, an algorithm processing module and a digital modulation pulse output module. The algorithm processing module employs a digitalized mode to realize full-decoupling control, the digital modulation pulse output module generates spatial vector modulation pulses according to the output result of the algorithm processing module by using a digitalized pulse-width modulation method to complete driving of three-phase six switches. The power factor is high, the input current harmonic wave distortion is small, the efficiency is high, bidirectional transmission of power can be realized, and the digitalized three-phase system power factor correction apparatus is suitable for large-power occasions.

This invention relates to a photoelectric mixed line beam in devices, meters and a multimedia interactive system and illumination. Two, three or four types among fibers optical cables, wires and cables are set in an armoured tube of the photoelectric mixed beam which can be stainless steel and the optical cable branch beam and the wire branch beam are sleeved by casing pipes separately to be armoured fiexible or flame retardant plastic, setting related numbers at both sides of the fibers, optical cables, wires cables and connectors at each port.

The invention provides a user state synchronization method and device, and a server, and relates to the field of telecommunication; wherein the method comprise following steps of obtaining the state of a first terminal based on virtual private branch exchange VPBX in real time; synchronizing the changed state of the first terminal to a second terminal based on an enterprise-oriented instant messaging application LYNC when it is detected that the state of the first terminal is changed; obtaining the state of the second terminal based on the enterprise-oriented instant messaging application LYNC in real time; and synchronizing the changed state of the second terminal to the first terminal based on the virtual private branch exchange VPBX when it is detected that the state of the second terminal is changed. According to the scheme provided by the invention, bidirectional transmission of the VPBX user state and the LYNC user state can be realized.

The invention relates to a heater and a heating atomization device, and the heater is provided with an accommodating cavity for accommodating an atomization medium carrier and comprises a magnetic field generation unit which is arranged in the heater and is used for generating an alternating magnetic field; a first induction unit, wherein at least part of the first induction unit is contained in the containing cavity, and the first induction unit can be arranged in the atomizing medium carrier in a penetrating mode and generate heat through the alternating magnetic field. and a second induction unit which is located in the containing cavity and surrounds the first induction unit, wherein the second induction unit can surround the atomization medium carrier and generate heat through the alternating magnetic field. In this way, the atomization medium in all the areas of the atomizing medium carrier can reach the atomizing temperature at the same time in a short time to be atomized, and therefore the atomizing speed of the atomization medium carrier is increased. Meanwhile, the atomizing medium is heated uniformly, on one hand, the phenomenon that part of the atomizing medium cannot be atomized due to the fact that the temperature is lower than the atomizing temperature is prevented, and the atomizing utilization rate of the atomizing medium carrier is increased.

The invention discloses a bidirectional wireless electric energy transmission system based on a PT symmetry principle. The circuit comprises a primary side circuit and a secondary side circuit. The primary side circuit comprises a primary side symbol variable resistor, a primary side tuning capacitor, a primary side coil and a primary side loop equivalent internal resistor which are connected in series; and the secondary side circuit comprises a secondary side symbol variable resistor, a secondary side tuning capacitor, a secondary side coil and a secondary side loop equivalent internal resistor which are connected in series; wherein the primary side symbol variable resistor comprises a primary side AC controlled voltage source and a primary side control module which are connected with each other, and the secondary side symbol variable resistor comprises a secondary side AC controlled voltage source and a secondary side control module which are connected with each other. The power transmission direction can be flexibly changed by controlling symbols of primary and secondary side symbol variable resistors, the bidirectional transmission of energy is realized, and the energy can be transmitted in the space. Moreover, in a time symmetry region, the constant transmission efficiency and output power can be realized, and the power divider has very strong anti-offset capability and has obvious advantages in practical application.

The invention provides a BIM-based fabricated building construction intelligent management method and system, and the method comprises the steps: constructing a BIM design model according to a construction design scheme and a component resource library; component splitting being conducted on the BIM design model, and obtaining a component production file and a component arrangement file; performing production scheduling on the component production file to obtain a production plan of each component; converting each component production plan into a component production instruction, and enabling a production line to produce a target component according to the component production instruction. According to the component arrangement file, all the target components are constructed and assembled; the problem that in the prior art, information integration and sharing cannot be achieved in the product design, production and construction process of the fabricated building is solved, fine management of the fabricated building is achieved through direct butt joint of design information, production data and the construction process, and the management level of a construction project is improved.

The invention discloses an energy recovery-based damping device and system and a train. The energy recovery-based damping device comprises a U-shaped double-tooth component, a transmission component,a mounting plate component and a direct current electric generator; the transmission component comprises a driving shaft, first gears arranged at two ends of the driving shaft, a second gear arrangedin the middle of the driving shaft through a one-way bearing; the mounting plate component comprises a lower bottom plate and mounting plates mounted on the left side and the right side of the lower bottom plate; the driving shaft is rotatably arranged on the mounting plate; the lower bottom plate is arranged on the bottom surface of the U-shaped double-tooth component in a sliding manner; gear racks are arranged on two supporting arms of the U-shaped double-tooth component; the gear racks are engaged with the first gears; when the U-shaped double-tooth component slides relative to the lower bottom plate, the gear racks drive the first gears to rotate; and the second gear is connected to an input end of the direct current electric generator. According to the energy recovery-based damping device and system and the train, the structural strength of the damping device is improved, and the instability of the damping device caused by eccentric force is avoided, so that the work efficiency of the energy recovery-based damping device is improved and the service life of the energy recovery-based damping device is prolonged.

The invention discloses a method for sharing audio through voice. The method is used between a vehicle-mounted terminal and a server and comprises the steps that the vehicle-mounted terminal plays audio and sends an audio sharing request corresponding to a voice sharing instruction to the server when receiving the voice sharing instruction about the audio, and the voice sharing instruction comprises identity information of a person to be shared; and when receiving the audio sharing request, the server acquires the audio and/or the attribute information of the audio to generate audio sharing information, and pushes the audio sharing information to a to-be-shared terminal corresponding to the identity information of the to-be-shared person. Meanwhile, the invention further discloses a systemand a vehicle-mounted terminal for voice audio sharing by using the method. Through the method, the system and the vehicle-mounted terminal, the technical problem that the audio cannot be instantly shared through voice in the prior art can be solved, and the driving experience of a user is improved.

The invention relates to a mesoscopic modeling and multi-scale analysis method suitable for an acupuncture composite material, which comprises the following steps: firstly, carrying out a CT (Computed Tomography) test, measuring a structure size and obtaining characteristic parameters; and carrying out geometric division on the acupuncture region based on the general unit cell model, and establishing a mesoscopic analysis model of the acupuncture part. Secondly, for a non-needled area in the needled composite material, describing the damage behavior of the non-needled area by adopting a continuous medium damage theory; considering that a needled composite material has a complex material phase, the equivalent elastic property of a non-needled area is obtained by adopting a hierarchical modeling thought to serve as the input of a continuous medium damage theoretical model. And finally, aiming at the characteristic that the acupuncture part does not have application periodic boundary conditions, a local area volume averaging method is provided, and bidirectional transmission of mesoscopic-macroscopic cross-scale data in multi-scale analysis is realized.

The invention discloses a railway cold-chain logistics bi-directional parallel pipeline system. A cold-chain conveying pipeline comprises a first cold-chain conveying pipeline and a second cold-chainconveying pipeline which are arranged in parallel at least at part of a district, and the tail ends are provided with a sending device and a receiving device correspondingly. The first cold-chain conveying pipeline and the second cold-chain conveying pipeline are arranged in parallel up and down, and the middles of the first cold-chain conveying pipeline and the second cold-chain conveying pipeline are provided with a self-rotating reversing device and a rotary drive device. The self-rotating reversing device is internally provided with a first transition pipeline and a second transition pipeline which are arranged in parallel and are integrally and fixedly connected. The rotary drive device is used for synchronously rotating the two transition pipelines and cold-chain container devices inthe transition pipelines to be reversely switched between the first cold-chain conveying pipeline and the second cold-chain conveying pipeline. By means of rotation of the transition pipelines, whenthe cold-chain container device carries out reversing, smoothness of the bi-directional parallel pipelines can be kept, and bi-directional transmission of the parallel pipelines is achieved.