49 results about "Branch switching" patented technology

A method and device for protecting Ethernet Tree (E-Tree) services are disclosed. An ID is configured for each branch of the E-Tree. The method includes: determining a branch that needs to perform switching; notifying the ID of the branch that needs to perform switching to a work E-Tree through a root UNI of a protect E-Tree; and switching data over the branch that needs to perform switching from the work E-Tree to the protect E-Tree according to the ID of the branch that needs to perform switching. In the embodiments of the present invention, because an ID is configured for each branch of the E-Tree, the branch corresponding to the ID may be triggered to perform protection switching as required, thus implementing branch switching.

A projection display device that includes: a light source unit 1 that includes a discharge lamp 2 as a light source; an image formation unit; a projection optical system; and a light source cooling unit that cools the light source unit. The light source unit is disposed so that a lamp axis that connects two discharge electrodes of the discharge lamp is orthogonal to a projecting direction of the projection optical system, and the light source unit includes: a concave mirror 3; and a transparent part 4 that covers an opening of the concave mirror. The light source cooling unit includes: a blowing fan that supplies cooling air; a plurality of air blowing ports 6a and 6b disposed at the concave mirror or a connecting part that connects the concave mirror and the transparent part; an air duct 9 that connects the air blowing ports and the blowing fan; a branch switching valve 10a that is disposed in the air duct and switches between a plurality of branch flow paths so as to allow the cooling air to flow therethrough; and a control valve that is provided for each of the air blowing ports and rotated around a supporting axis by the action of gravity depending on a posture of the light source cooling unit, thereby controlling a wind direction so that the cooling air is blown from above the discharge lamp. The top of the light source lamp is cooled effectively regardless of the installation posture of the projection display device.

The present invention discloses a protection switching method based on an Ethernet passive optical network, a system and a device thereof, belonging to the field of communication. The method comprises the following steps: the ONU and OLT send an ASP message with the protection switching information on a protection channel; the OLT checks the local switching triggering request and the ASP message, judges whether the switching is required, and determines the switching mode, according to the triggering request and the protection switching information in the report; the main optical fiber or the branch optical fiber is switched by the OLT according to the determined switching mode; the ONU checks the local switching triggering request and the ASP message, and judges whether the switching is required; if the switching is required, the ONU switches the uplink business onto the protection channel and receives the downlink business from the protection channel. The system comprises an optical network unit and an optical line terminal. The protection switching method enhances the switching stability and practicality by judging the main switching or branch switching on the OLT side.

The invention discloses an operation optimization method for a power distribution network comprising a schedulable distributed power supply. The method comprises the following steps: inputting initial values of a line parameter, load level, network topology connection relationship, a distributed power supply connection position, a power factor, reference voltage and reference power according to a given power distribution system comprising the schedulable distributed power supply; establishing a mathematical model for an operation optimization problem of the power distribution network comprising the schedulable distributed power supply according to all the parameters; introducing a variable to perform indirect description on a branch switch state: when branch ij is disconnected, keeping the variable equal to zero, and when the branch ij is connected, keeping the variable equal to Xi; setting rotating cone constraint according to the network structure and scale; solving the mathematical model for the operation optimization problem of the power distribution network comprising the schedulable distributed power supply, an inequality for performing indirect description on the branch switching state and the rotating cone constraint by using a cone optimization method; and outputting a solving result. According to the method, the economy and the reliability for operation of the power distribution system are further improved, and simultaneous optimization of output power of a plurality of distributed power supplies is realized.

The invention discloses a radar pulse modulator for modulating direct-current high voltage into various time intervals and various frequencies. A signal receiving module is connected with a pulse generator through a serial interface circuit, the output of the pulse generator is respectively connected with a first driving circuit and a second driving circuit, the outputs of the first driving circuit and the second driving circuit are respectively connected to the primary coil end of a pulse transformer, the outputs of high-voltage power supplies of the first driving circuit and the second driving circuit are respectively connected with an MOSFET branch module and an IGBT branch module, and the MOSFET branch module and the IGBT branch module are in parallel connected and then connected with the input of a branch switching controller; and an FPGA chip of the pulse generator is respectively and externally connected with a parallel output interface, a parallel input interface, a program memory, a switching control switch and a trigger pulse switch. The radar pulse modulator can conveniently control the preheating time of a transmitter, the pulse widths and the repetition frequencies of trigger pulse, restrain the same frequency interference, and obtain better wave forms during a high voltage modulating process; in addition, the driving circuits have faster on-off speed and higher voltage and power capacity.

The invention discloses a cooling circulation system for electric vehicles, and an electric vehicle with the cooling circulation system. The cooling circulation system of the electric vehicle comprises a driving motor, a power electronic unit, a first cooling branch, a second cooling branch, a third cooling branch, a first branch switching unit and a second branch switching unit. According to the cooling circulation system for electric vehicles, and the electric vehicle with the cooling circulation system, which are disclosed by the embodiment of the invention, the first branch switching unit and the second branch switching unit are arranged in the cooling circulation system, and the switching between the first branch switching unit and the second branch switching unit is controlled, so that the switching of cooling loops under different modes can be realized; only parts in a working state under a corresponding mode need to be cooled, and the cooling of all parts is not needed, so that unnecessary consumption is reduced; besides, a cooling pipeline is shortened, and the cooling flow is increased, so that the working efficiency of the cooling circulation system is improved.

The invention discloses a topological analysis method for a power distribution network based on [mu]PMU and SCADA, and the method comprises the steps: carrying out the AND operation of each row of aninitial node branch correlation matrix, formed according to the SCADA data, and each element in a branch switching matrix, and obtaining a node branch correlation matrix; judging whether a branch current is abruptly changed or not according to a simulation branch current of [mu]PMU at the next moment and a switching quantity obtained by an SCADA system through the analysis and verification of a simulation current collected by the [mu]PMU: correcting the branch switching matrix if the branch current is abruptly changed, carrying out the AND operation of each row of the node branch correlation matrix and a real-time branch switching matrix, and obtaining a real-time node branch correlation matrix; carrying out the BFS (breadth-first search) of the real-time node branch correlation matrix, and obtaining the topological structure of the power distribution network. The method can achieve the effective discrimination of the impact on the topological structure of the power distribution network from the load changes, achieves the quick and accurate recognition of the changes of the topological structure of the power distribution network, and provides the real-time reliable topology of thepower distribution network.

The invention provides a method for realizing voice business switching in a single wireless access way. When a source wireless access network decides to switch an on-going voice business carried out by a single wireless access terminal into a target circuit domain network, the method comprises the following steps that the source wireless access network transmits a circuit domain switching request to an interworking gateway (IWG); the IWG and the target circuit domain network finish the circuit domain switching preparation process; when branch switching is accessed, the IWG transmits preswitching indication information and switching information to the single wireless access terminal by the source wireless access network; and the single wireless access terminal stores the switching information, enters a preswitching state according to the preswitching indication information, waits for a switching command and finishes the following switching processes. The realizing method and system can ensure that the successful switching of the voice business is realized.

The invention discloses a highly integrated four-channel S-band transceiver module, comprising a receiving channel, a transmitting channel and an external interface, wherein the receiving channel comprises paired band branch I and Q receiving channels, and the transmitting channel comprises paired band branch I and Q transmitting channels. The two-port feeding of the transceiver module can effectively improve the circular polarization axis ratio of the antenna, and the transceiver channels are separated, which can improve the isolation of the transceiver, reduce the interference between channels and help to improve the communication capability of the system. Furthermore, the invention also discloses a phased array antenna with the high-integration four-channel S-frequency transceiver module, which can realize polarization adjustability by cooperating with a four-point feeding antenna unit, realizes polarization conversion and beam scanning of the phased array antenna through electroniccontrol phase shift and branch switching, effectively reduces the antenna port surface, and realizes miniaturization design.

The invention discloses an urban logistics system based on a pipe network. The system comprises a monitoring and dispatching center, tracks, transfer stations, logistics vehicles and multiple branch switching mechanisms. The monitoring and dispatching center is used for (1) monitoring states, positions and motions of the logistics vehicles, (2) monitoring states and motions of the branch switching mechanisms and (3) monitoring transportation states of goods. The tracks are pipe-type tracks and proceeding tracks of the logistics vehicles. The transfer stations are arranged on the tracks and used for loading and unloading of the logistics vehicles. The branch switching mechanisms are arranged at intersections or branches of the tracks. The goods have tags. The monitoring and dispatching center is used for planning transmission paths and controlling operation of the logistics on the tracks based on the planed transmission paths through the branch switching mechanisms, and then sending the sorted goods to a destination transfer station from a departure place transfer station. According to the invention, the system is high in transmission efficiency, easy to implement and high in automation degree.

A MIMO transmitter capable of highly efficient power amplification over a wide dynamic range or for a high PAPR signal. In the MIMO transmitter (100), an amplifier (150) amplifies an input signal and outputs the amplified signal to an antenna (170). An amplifier (160) amplifies an input signal and outputs the amplified signal to an antenna (180). A peak detection part (130) detects an envelope of a first transmission sequence. A branch switching part (140) switches over to input all of the first transmission sequence to the amplifier (150) or to input part of the first transmission sequence together with a second transmission sequence to the amplifier (160) based on comparison results between the envelope detection result of the first transmission sequence and a threshold value. This constitution can reduce a peak of the input signal of the amplifier, and thus the amplifier can be efficiently used. As a result, the MIMO transmitter capable of highly efficient power amplification for a high PAPR signal and the like can be realized.

The invention discloses a safety control system and method of a tubular logistics system. The system comprises a monitoring and dispatching center, wherein the monitoring and dispatching center is incommunicating connection with logistics vehicles running on a track or stopping in a transfer station, the monitoring and dispatching center is in communicating connection with branched switching mechanisms arranged on the track, and the logistics vehicles are provided with positioning modules and unique ID numbers. Each branched switching mechanism is provided with a unique ID number. The monitoring and dispatching center is responsible for monitoring of real-time positions and real-time running speeds of the logistics vehicles. The monitoring and dispatching center achieves dispatching of the logistics vehicles by controlling the branched switching mechanisms and the speeds of the logistics vehicles. By adopting the safety control system and method of the tubular logistics system, safe and efficient running of the logistics vehicles can be guaranteed.

A MIMO transmitter capable of highly efficient power amplification over a wide dynamic range or for a high PAPR signal. In the MIMO transmitter (100), an amplifier (150) amplifies an input signal and outputs the amplified signal to an antenna (170). An amplifier (160) amplifies an input signal and outputs the amplified signal to an antenna (180). A peak detection part (130) detects an envelope of a first transmission sequence. A branch switching part (140) switches over to input all of the first transmission sequence to the amplifier (150) or to input part of the first transmission sequence together with a second transmission sequence to the amplifier (160) based on comparison results between the envelope detection result of the first transmission sequence and a threshold value. This constitution can reduce a peak of the input signal of the amplifier, and thus the amplifier can be efficiently used. As a result, the MIMO transmitter capable of highly efficient power amplification for a high PAPR signal and the like can be realized.

The invention discloses a wireless sensor self-supply conditioning circuit based on space electromagnetic energy, which includes an external input power supply connected to the AC input terminal of the rectified full bridge, and the DC output positive terminal and negative terminal of the rectified full bridge There are four branches connected in parallel, among the four branches, the first branch is a capacitor C2, and the capacitor C2 is connected in parallel with the second branch composed of the switching element M and the inductance L2 in series, and the diode D5 and the capacitor A third branch composed of C3 in series is connected in parallel to both ends of the inductor L2 in the second branch, and a fourth branch composed of load R3 is connected in parallel to both ends of the capacitor C3 in the third branch. The simulation results of this scheme show that the output voltage tends to be stable after 5 power frequency cycles, and the form factor is greatly improved. Using the algorithm in Section 3.1, it can be seen that the form factor is basically close to 1, and the voltage output efficiency is about 37.872%.

The invention discloses a liquid anti-rolling positioning charging and circulating device for a liquefied natural gas storage tank. The device comprises a main discharge pipe, and a heavy component discharge branch pipe and a light component discharge branch pipe which are communicated with the main discharge pipe, wherein a master control switching valve is arranged on the main discharge pipe; heavy component branch pipe switching control valves and light component branch pipe switching control valves are respectively arranged on the heavy component discharge branch pipe and the light component discharge branch pipe; the outlet end of the heavy component discharge branch pipe is communicated with inlets of heavy component branch pipes; the outlet end of the light component discharge branch pipe is communicated with inlets of light component branch pipes; multi-branch switching control valves are arranged on each heavy component branch pipe and each light component branch pipe; jet rings are arranged in the liquefied natural gas storage tank at intervals; multiple nozzles are arranged on each jet ring; the outlet end of the heavy component branch pipe is correspondingly communicated with the multiple jet rings arranged on the upper part one by one; the outlet end of the light component branch pipe is correspondingly communicated with the multiple jet rings arranged on the lower part one by one. According to the device, the rolling probability is greatly reduced.

The invention discloses a branch access method, a device, a terminal and a storage medium based on a distributed version control system, wherein, the method comprises the following steps: determininga plurality of branches of a complete code file in the distributed version control system; creating a first branch directory for a designated branch and storing a code file of the designated branch ina corresponding first branch directory; according to the target branch to be accessed, searching the corresponding first branch directory, and accessing the code file in the found first branch directory. The invention solves the problem of low execution efficiency in branch switching and improves the development and test efficiency by storing the frequently accessed branches separately, which canaccess any branch at any time without branch switching, and the access of the branch does not produce conflict.

The embodiment of the invention discloses a communication control method, a communication control circuit and a related device. The electronic device comprises an AP, an antenna, a discontinuous reception DRX module, a transmit-receive TRX module, a cellular Cell communication module and a low-power wide area network LPWAN communication module. The antenna comprises a main set antenna and a diversity antenna, and the method comprises the following steps: when detecting that a cellular Cellular communication module and an LPWAN communication module are both started, detecting whether the cellular Cellular communication module needs diversity or not; if so, switching a communication branch of the DRX module to a cellular Cell radio frequency branch through a communication branch switching execution module; switching the working state of the diversity antenna to a state required by a cellular communication frequency band, connecting the cellular Cell radio frequency branch with the diversity antenna, wherein the communication branch switching execution module comprises an AP or a low-power wide area network LPWAN communication module; and controlling the LPWAN communication module tostop sending and receiving the signals. According to the invention, the equipment cost is reduced, and the flexibility of controlling the common diversity antenna of multiple communication systems isimproved.

The invention discloses a branch automatic management method in application modularization, a storage medium, a device and a method. The method relates to the field of application development and comprises the steps of downloading a script file corresponding to a current version application to be packaged to the local from a server side, wherein the script file is used for recording branches corresponding to different versions of applications and components forming the branches; synchronizing the code files of all the components of the server to a local script file; obtaining a branch formingthe current version application to be packaged and a component forming the branch based on the record of the script file; based on the acquired branch and component information, switching a code fileof an acquired component out of the script file, and placing the switched code file of the component under the branch to which the current component belongs; and compiling the code file arranged underthe branch to package the current version application to be packaged. According to the invention, the orderly operation of branch switching in the modularization of the application can be effectivelyensured.

A projection display device that includes: a light source unit 1 that includes a discharge lamp 2 as a light source; an image formation unit; a projection optical system; and a light source cooling unit that cools the light source unit. The light source unit is disposed so that a lamp axis that connects two discharge electrodes of the discharge lamp is orthogonal to a projecting direction of the projection optical system, and the light source unit includes: a concave mirror 3; and a transparent part 4 that covers an opening of the concave mirror. The light source cooling unit includes: a blowing fan that supplies cooling air; a plurality of air blowing ports 6a and 6b disposed at the concave mirror or a connecting part that connects the concave mirror and the transparent part; an air duct 9 that connects the air blowing ports and the blowing fan; a branch switching valve 10a that is disposed in the air duct and switches between a plurality of branch flow paths so as to allow the cooling air to flow therethrough; and a control valve that is provided for each of the air blowing ports and rotated around a supporting axis by the action of gravity depending on a posture of the light source cooling unit, thereby controlling a wind direction so that the cooling air is blown from above the discharge lamp. The top of the light source lamp is cooled effectively regardless of the installation posture of the projection display device.

The invention provides a short-circuit current consuming branch switching-off control method and device based on state response. The method provided by the invention comprises steps of generating a short-circuit current consuming branch switching-off instruction when detecting that the on / off state signal of any branch connected to a busbar is in an on state at a first time and detecting that theon / off state signal of any branch is in an off state at a second time in a power system where the short-circuit current is required to be controlled in real time; and removing the short-circuit current consuming branch from the power grid in response to the short-circuit current consuming branch switching-off instruction. The method provided by the invention can timely remove the short-circuit current consuming branch from the power system after the short-circuit fault in the power system is isolated, so that the system can restore to the normal state as soon as possible.

The invention discloses an equilibrium charging method of batteries, and belongs to the field of equilibrium charging. The equilibrium charging method comprises a main circuit, a plurality of single lithium batteries, a plurality of single lithium battery protection chips, a charge control MOS transistor grid, a discharge control MOS transistor grid, a charge control switching device, a control circuit and a discharge control switching device, wherein one pin of each single lithium battery protection chip is connected with a shunt discharge branch, and the shunt discharge branch is further provided with a branch resistor and a shunt discharge branch switching device. The equilibrium charging method can protect the battery pack and automatically charge and cut off the power supply, can realize the advantage of equilibrium charge, and solves the problem that the existing battery equilibrium charging method mostly realizes equilibrium charge at the charger end, the chargers for equilibrium charge are mostly customized and thus only suitable for batteries with corresponding models, the limitation is great, and the design and application cost of the lithium battery pack charger is increased.

The invention provides a method and a device for heterogeneous embedded tabular processing action flow, which is used to create an action flow sheet according to the action flow, add an action flow sheet row, set an condition unit, an instruction unit and loop execution properties, and set the mutual exclusion relationship of the action flow sheet row for the conditional branch action flow of mutual exclusion, and set the action flow sheet for the child conditional branch action flow and hierarchically embed under the action flow sheet row that contains the execution condition of the parent conditional branch action flow; and create a branch action flow sheet for a switching branch action flow, and embed the branch action flow sheet hierarchically under the action flow sheet row containingthe branch switching instruction. The invention also provides a method and a device for executing the action flow according to the action flow sheet and the branch action flow sheet. Through the processing of the action flow of the invention, the editing, processing and execution of the complex action flow is more concise and efficient.

The invention relates to a fast DC switch and a control method thereof and belongs to the field of an electric power switch. The fast DC switch is characterized by comprising a main current branch, anoscillation transfer branch and an energy dissipation branch, after the main current branch, the oscillation transfer branch and the energy consumption branch are connected in parallel, the three areled out through outlet ends A1 and A2. By controlling the action of an oscillation transfer branch switching switch K1, capacitance adjustment of an oscillation transfer branch pre-charging capacitoris realized; in the case of small current interruption, small current transfer is accomplished by a small capacitor, the break time is effectively shortened while breakage of a fracture can be prevented, and break reliability is improved; under high current break conditions, break is achieved by transferring the current through a large capacitor, the break capacity is improved, and the fast breakspeed and high reliability are achieved. The fast DC switch is advantaged in that advantages of low rated flow loss, good fracture insulation recovery, high break reliability and fast break speed inthe whole current range are achieved, and requirements of a current DC system for switch safety, reliability and economical property can be satisfied.

The invention discloses a reconfigurable converter device, which comprises AC buses, DC buses, a power module, a multichannel switching module, a converting assist module, a measurement control moduleand the like. Through switching of the multichannel switching module, various power-type power electronic devices in the power module can be connected with any phases of the AC buses and the DC busesand can dynamically adjust the system structure and the converting capacity of the whole converter device according to the running state of the converter device. The reconfigurable converter device is simple and feasible in technological means; the converting capacity and the converting system structure can be dynamically adjusted, the utilization rates of various converting branches of the powermodule can be improved and the overall converting capacity can be reduce by fully utilizing the time differences between the AC buses and the DC buses in the converting capacity, and when one converting branch exits due to a fault, the other converting branches can be input through the multichannel switching module to replace the exited converting branch, thereby improving the stability and the reliability of the overall device.

The invention discloses a circuit reconstruction system and method for a photovoltaic array where an illumination part is shielded. The system comprises a photovoltaic array circuit, a photovoltaic panel branch switching circuit, a bypass circuit, power detection and analysis circuits, and a PLC power optimization module, wherein the photovoltaic array circuit comprises N rows and M columns of photovoltaic panels; each photovoltaic panel is connected in series with the branch switching circuit; each column of photovoltaic panels is connected in parallel with the bypass circuit; each photovoltaic panel is connected with the power detection and analysis circuit in the corresponding column; and each column of power detection and analysis circuits is connected with the PLC power optimization module. The method includes the following steps of: 1, calculating the power of a reconstruction circuit; and 2, finding out the number of columns to be bypassed when the power reaches a maximum value in order to ensure that the output power of the photovoltaic array is optimal. The photovoltaic array power generation circuit is reconstructed based on the output voltage and a power requirement to improve the efficiency of photovoltaic power generation under non-uniform illumination.

The invention discloses a cooperative network security transmission method, which comprises the following steps: 1, if a previous frame uses a direct link for data communication, entering a step 2, and if the previous frame uses a relay link, entering a step 3; 2, estimating a channel parameter of a direct link of the current frame, judging whether the direct link can provide secure communication, if so, keeping the direct link branch and entering a step 4, otherwise, performing branch switching, estimating a channel parameter of a relay link of the current frame and entering the step 4; 3, estimating the channel parameter of the relay link of the current frame, judging whether the relay link can provide secure communication, if so, keeping the relay link branch and entering the step 4, otherwise, performing branch switching, estimating the channel parameter of the direct link of the current frame and entering the step 4; and 4, transmitting data to a target node by a source node through the selected branch until the data transmission is finished. By the cooperative network security transmission method, reliable and secure data transmission can be provided and the complexity for implementing a system is reduced.

The invention discloses a front and reverse interlocking optical communication cross-connecting box. The front and reverse interlocking optical communication cross-connecting box includes a cross-connecting box body, two opposite sides of the cross-connecting box body are provided with box body doors, and the front and reverse box body doors are connected through an interlocking mechanism; the cross-connecting box body is internally provided with a branch switching connection seat assembly; a solar panel is laid on the top of the cross-connecting box body, the cross-connecting box body is internally provided with a storage battery, and the storage battery is connected with the solar panel. The front and reverse interlocking optical communication cross-connecting box provided by the invention adopts the structure of front and reverse side door opening, so that maintenance or replacement of internal parts of the optical communication cross-connecting box is convenient, disassembling time is saved, and in addition, the front and reverse interlocking mechanism is adopted, so that when technical personnel open the box body door of one side, the box body door of the other side is closed from beginning to end during working, thus when the technical personnel perform operation, people without fixed duties are prevented from opening the box body door of the other side and causing influence, and the front and reverse interlocking optical communication cross-connecting box can also convert solar energy into electric energy to be stored in the storage battery in the cross-connecting box body, thereby effectively saving energy.

The invention provides a game starting method and device which are applied to a game starter, the game starter comprises a graphical user interface, the graphical user interface comprises a branch switching control, and the method comprises the steps: obtaining, in response to a branch switching operation for the branch switching control, a branch list, displaying the branch list in a branch listdisplay area of the graphical user interface; in response to a selection operation for a branch entry in the branch list, determining a selected target branch; restoring a target local development file corresponding to the target branch according to a server version file corresponding to the target branch; and after the target local development file is restored, starting the restored target localdevelopment file. Therefore, one-key branch operation can be realized, the operation complexity of developers is greatly reduced, and the development efficiency is improved.

The invention provides a county 10kV power grid running chart, and relates to the technical field of power command auxiliary tools. The running chart takes line switches as minimum power supply units,and LED patch lamps are adopted to represent the topological relation between the line trend and line equipment; button switches are used for representing field switches, and the button switches correspond to the field switches in a one-to-one mode, and the button switches control the LED patch lamps, equivalently, the field switches control field lines for achieving the real-time correspondenceof the running chart and actual running conditions of the lines. Different color labeling modes are adopted to distinguish equipment types, and different transformer substation power supply areas aredistinguished through different colors of wires. The beneficial effects of the invention are that the simulation operation in a line power failure and transmission process can be achieved through therunning chart; an operation and maintenance worker can quickly and visually master the operation condition of a power grid through combining with the staff training, and knows the line direction, theline topological relation and the segmentation and branch switching effects more quickly, thereby improving the operation and maintenance efficiency.