141results about How to "Fix switching issues" patented technology

The invention discloses a dual heat-source heat-pump hot water device with an extremely simple refrigerating loop. The device is characterized by mainly comprising a compressor, a hot water condenser, a wind heat exchanger, a water heat exchanger, a four-way valve, a bidirectional throttle and the like, wherein a high pressure inlet of the four-way valve is connected with the outlet of the hot water condenser, and the other three ports thereof are connected with air inlets of the wind heat exchanger, the water heat exchanger and the compressor respectively; other ports of the wind heat exchanger and the water heat exchanger are connected with the bidirectional throttle; the exhaust port of the compressor is connected with the inlet of the hot water condenser, and is connected with high pressure air inlet of an electromagnetic pilot valve of the four-way valve; four functions of manufacturing hot water by utilizing water source or air energy and providing air-conditioning cool water by utilizing air-cooling or heating water can be realized by only switching the four-way valve, defrosting can be performed completely and quickly; and a water pre-heater is added to the device to reclaim the heat of waste hot water. The heat pump has the advantages of dual heat sources compensation and wide application range, has multiple functions, extremely simple structure, extremely convenient switching and over 5 of annual comprehensive energy efficiency ratio, and has great popularization value.

The invention relates to a communication switching method among different networks, which comprises the following steps of: sending a request for establishing a second link to a core network by a terminal through an access control device of a second network; and after completing the establishment of the second link, sending a request for releasing a first link to the terminal by the core network through an access control device in a first network. The invention has the advantages of providing and solving the technical problem of the processing of seamless switching of a multi-mode terminal between a WLAN (Wirele Local Area Network) network and a mobile wireless network in the prior art, and guarantees service quality and service experience of users during roaming. The invention provides a novel implementation system and method according to international standards of 3GPP (The 3rd Generation Partnership Project), 3GPP2, RFC (Request for Comments) and the like, which have easy implementation and capability of scale commercial popularization.

The invention discloses a timing trigger switching method based on ephemeris and user position calculation, and belongs to the field of low-orbit satellite communication. The working principle is as follows: (1) a gateway station receives a position and speed measurement report periodically sent by a user, (2) the gateway station calculates and judges a target wave beam / satellite / gateway station and a switching mode according to the ephemeris; (3) a delta t1 value is calculated according to the conditions of the source gateway station, the target gateway station and the switching mode, (4) a toff-treport value and a delta t2 value are calculated based on the ephemeris and the user position; (5) pre-switching judgment is carried out according to the calculated value; (6) if a pre-switchingcondition is met, a timer is established; (7), pre-switching is initiated by the gateway station according to the timing of the timer; and (8), a switching command is issued to a user by the gateway station after the timing of the timer (toff-treport-delta t1-delta t2). By means of the method, the low-orbit satellite system switching preparation stage depends on gateway station calculation, the terminal does not need to conduct neighbor cell / wave beam pilot frequency measurement, the switching problem of a small wave beam overlapping area is effectively solved, and meanwhile the method is widely applied to various scenes of the low-orbit satellite system.

The invention discloses a switching method and a switching system. The method comprises the step of: sending a message to a far end PE through a dual-homed PED when dual-homed client equipment (CE) or dual-homed provider equipment confirms a primary link failure, wherein the message contains the address information of the dual-homed CE. The method also comprises the steps of switching a flow from a primary PW to a spare PW through the far end PE so as to be transmitted, and switching the flow from the primary link to a spare link through the dual-homed client equipment so as to be transmitted. The invention also provides a switching system. According to the technical scheme of the invention, when the link of the dual-homed CE is in failure, the switching for the link of the dual-homed CE and PW is rapidly performed without influence on the flow of the single-homed CE.

The invention discloses a microgrid active synchronous control method based on distributed control. The method is characterized in that through the distributed control technology, system busbar voltage of a microgrid is adjusted actively through local information interaction, thereby realizing smooth transition of the microgrid from an island operation mode to a grid-connected operation mode. A synchronous correction signal generated by a synchronous controller is only transmitted to a leader microsource; the leader microsource realizes information interaction with adjacent microsources; meanwhile, other microsources exchange information with adjacent microsources thereof; and finally, all of the microsources reach conformity behavior, that is, voltage and frequency are consistent, reactive power is allocated in proportion, and the microgrid system busbar voltage is synchronous with a large power grid, thereby realizing seamless grid connection. Compared with a conventional synchronous method, the method, based on local sparse communication, does not need a complex communication network, thereby reducing cost, and improving system reliability, flexibility and redundancy. Besides, even though a distributed communication network has fault, the bottom droop control can still keep normal operation of the system.

The invention discloses an equipment cooperation multi-screen interactive system under the equipment cloud environment and a method thereof. The system comprises equipment cloud, wherein the equipment cloud is distributed with multiple equipment cloud nodes, each equipment cloud node comprises a first equipment portion and a second equipment portion, the first equipment portion comprises at least one intelligent terminal, the second equipment portion comprises at least one intelligent terminal or large-screen equipment, the equipment cloud is used for carrying out resource transmission and resource sharing between the first equipment portion and the second equipment portion or between inner parts of the second equipment portion and further uniformly distributing the scattered storage resources to the whole equipment cloud, the distribution situation of equipment resources is stored through establishing virtual storage equipment for carrying out positioning and searching of the equipment resources; the intelligent terminal autonomously discovers the large-screen equipment and other intelligent terminals on the equipment cloud and realizes selectivity interconnection, so seamless connection between the intelligent equipment and intelligent sharing of the multimedia resources are realized.

The invention provides a call mode conversion method. The method comprises the steps that whether a call mode conversion condition is met is judged according to network environment parameters which are acquired in real time; and if the call mode conversion condition is met, a video call mode is converted to a voice call mode. According to the invention, a network environment is monitored in real time; the problem of video call switching in a poor network environment is solved; call can be continued; automatic seamless switching between video call and voice call is realized; and the user experience is enhanced.

The invention relates to a method for switching servers of a SIP (Session Initiation Protocol) communication terminal, which comprises the steps of: a, transmitting registration information to the SIP servers by a switching device; b, starting different timers for switching the servers by the switching device according to the number of the configured SIP servers and the registration condition of current servers; c, starting the procedure of switching the servers when the failure response of the servers is received by the switching device; d, starting the procedure of switching the servers when logout fails or an error response is received; e, returning to transmit the registration information to the SIP servers after waiting for registration refreshing time if the information of a characteristic code of 2000K is received by the switching device; f, registering again when any non-registration affairs fail; and g, transmitting heartbeat information in definite time by the switching device so as to detect whether the servers fail or not. The method solves the problem of error switching caused by abnormal conditions of networks, and can correct the error switching in time and enable VOIP (Voice over Internet Protocol) services to be in a usable state all the time.

The invention discloses a system and a method for switching a long term evolution (LTE)-advanced mobile relay (MR) and an eNode B. The system comprises a timing measurement module, a switching policy module, a reliable switching module and a group switching module, wherein the timing measurement module measures the channel quality of a current eNode B cell and a neighbor eNode B cell at fixed time; the switching policy module is used for judging whether a source eNode B is required to be switched and determining a target eNode B which is switched from the source eNode B; the reliable switching module is used for switching a relay from the source eNode B to the target eNode B; during switching of the MR, an MR_user equipment (UE) 1 establishes synchronization with the target eNode B, applies for resource reservation, establishes connection with the target eNode B at fixed time, and then forwards information which is required by establishment of connection between the MR_UE1 and the target eNode B to an MR_UE2; after receiving related information, the MR_UE2 is immediately disconnected from the source eNode B and quickly switched into the target eNode B; and by using the group switching module, an MR_eNode B unit re-allocates resources which are required by accepted UE and reports a result to a mobility management entity (MME), and the MR_eNode B unit allocates the resources which are provided by the target eNode B to the UE which is accepted by the MR, and reports an allocation result to the MME through the MR_UE1.

An embodiment of the invention discloses a network selection method. The network selection method comprises the steps: obtaining a switching instruction for switching network modes, which is input by a user; displaying a network mode selection interface according to the switching instruction; obtaining a network mode selected by the user on the network mode selection interface; according to the network mode, determining a target network and switching a mobile terminal from the current network to the target network. The embodiment of the invention further provides a corresponding mobile terminal. The network selection method provided by the embodiment of the invention solves a problem that the user cannot quickly and effectively switch the network of the mobile terminal under different scenarios according to personal requirements.

The invention discloses a DRNI switchover processing method and device. The DRNI switchover processing method includes the steps that a DRNI end receives a service switchover request sent by an opposite end; an in-end system where a service gateway corresponding to the service switchover request is located is determined; the DRNI end acquires a switchover response message responding to the service switchover request from the determined in-end system and sends the switchover response message to the opposite end. The DRNI switchover processing method and device achieve the purpose of DRNI flow switchover and have the advantage of guaranteeing effective service transmission.

The invention discloses a robot flexible curved surface milling processing production device. The robot flexible curved surface milling processing production device comprises a feeding chamber, a discharge chamber, a workbench, a tool bracket, an industrial robot assembly and a control system, wherein the feeding chamber and the discharge chamber are used for storing blanks and processed parts; the workbench is used for clamping workpieces and completing a processing task; the tool bracket is used for placing an electric spindle and a vacuum sucking disc; an industrial robot achieves automatic feeding and discharge of the workpieces of various specifications through the vacuum sucking disc; and curved surface milling processing is achieved through the electric spindle. According to the robot flexible curved surface milling processing production device, the feeding chamber, the discharge chamber, the tool bracket and the workbench are uniformly distributed with the robot adopted as the center, so that space utilization rate is increased; and operation like automatic feeding and discharge of the workpieces and automatic changing of tools is achieved based on the mechanical and electronic integration principle, production technology is simplified, production takt is optimized, and production efficiency is greatly improved.

The invention discloses a handover switching method of a user terminal under a single-hop mode in a satellite communication system, belonging to the technical field of satellite communication. The method of the invention comprises the following steps: (a) a wireless network controller of a user terminal sends a single-hop resource reconfiguration message to a satellite routing controller and simultaneously starts a double-hop switching process required by signaling; (b) the satellite routing controller judges whether single-hop resources are available or not, wherein if the single-hop resources are available, the wireless network controller indicates the satellite routing controller to execute single-hop resource reallocation and indicates the user terminal to carry out physical channel reconfiguration, and if no single-hop resources are allocated, the wireless network controller indicates the satellite routing controller to release current single-hop resources and indicates the terminal to carry out physical channel reconfiguration according to a double-hop link physical channel message; (c) the satellite routing controller informs the satellite to execute operation; and (d) the wireless network controller completes the ground network operation required by handover switching of the user terminal. The invention can be used for satellite mobile communication.

The method comprises: receiving the command for enabling the communication object window; said command comprises the preset object label; changing the state of said communication object into the enabled state, and changing the state of previously enabled communication object into disabled state; switch the current communication object to said enabled object. The invention also reveals an apparatus thereof comprising a receiving unit and a processing unit.

The invention requests to protect a heterogeneous Internet of Vehicles switching method based on vehicle trajectory prediction, which comprises the following steps of: step 1, establishing a vehicle-mounted heterogeneous network in an urban scene; step 2, establishing a vehicle trajectory prediction model based on LSTM and a convolutional social pool; step 3, predicting residence time of the vehicle terminal in each candidate network based on the vehicle trajectory predicted in the step 2; step 4, performing weight setting on a plurality of attributes comprising the residence time by utilizinga fuzzy analytic hierarchy process, and setting weights meeting corresponding requirements according to different services; and step 5, performing optimal network judgment based on a KL-TOPSIS algorithm. According to the heterogeneous Internet of Vehicles switching method, the switching frequency and the ping-pong switching frequency can be reduced.

The invention provides an internal and external network switching method and device based on a web website home gateway system, belongs to the field of Internet, particularly relates to intelligent home control technology and aims to solve the technical problem of IP address switching when a user terminal controls intelligent home equipment in a home internal network or external network through a web control page. The internal and external network switching method includes that the user terminal accesses a leading webpage of a communication server, the leading webpage compares an IP address of a visitor and a broadband dynamic IP address in a database to decide whether to jump to an internal network control webpage or an external network control webpage. The internal and external network switching device comprises the communication server, an IP data packet sending module and the user terminal, and the IP data packet sending module acquires the broadband dynamic IP address through a method of sending an IP data packet to the communication server regularly.

The invention discloses an intelligent transportation light signal receiving system based on a spread-spectrum technology, and a control method thereof. According to the intelligent transportation light signal receiving system, pairwise orthogonal spread spectrum codes are generated by utilizing data to be transmitted via a shifting register, the spread spectrum codes are subjected to MPPM modulation, and an LED light source is used for reflecting light according to MPPM signal output through a driving circuit after modulation; at a receiving end, electric signals obtained through detection by a photoelectric detector are amplified and subjected to MPPM modulation, a signal transmitted by which transmitter is determined to be received through correlation peak calculation, and the signal is sent out after despreading finally. The intelligent transportation light signal receiving system realizes free switching of signal receiving through the combination of the spread-spectrum technology and a PPM modulation technology, and solves the problem of sheltering.

The invention relates to an automatic switching method of circumscribed equipment of a television set. The method comprises the following steps: a. whether the present circumscribed equipment channel is in the state of opening is judged; if yes, the step b is executed; if no, the step d is executed; b. the circumscribed equipment channel is switched into the present working channel; c. whether the command of selecting the present working channel is received is judged; if yes, the switching is stopped; if no, the step d is executed; d. whether the present channel is the last channel in the channel monitoring sequence is judged; if yes, the first circumscribed equipment channel in the channel monitoring sequence is taken as the present circumscribed equipment channel and then the step a is executed; if no, the next circumscribed equipment channel in the channel monitoring sequence is taken as the present channel and then the step a is executed. The television set in the method can automatically judge which channel of the television the circumscribed equipment accessed by a user is in without being judged by the user.

The invention provides a non-ground network switching method and system without positioning capability of a terminal, and the method comprises the steps that M1, through information of a source air communication node, the source air communication node periodically calculates the service duration and service interruption time of a service provided by the source air communication node for the terminal in a service geographic region; m2, the source air communication node periodically sends a space information request to candidate air communication nodes in a broadcasting mode, one or more candidate air communication nodes feed back space information to the source air communication node, and the source air communication node selects a target air communication node for a ground terminal in theservice area according to the fed back space information; and m3, the target air communication node is switched to after the service of the source air communication node is interrupted according to aswitching command sent by the source air communication node. According to the invention, the switching problem of a large number of terminals without positioning capability in a 5G and B5G mobile communication system with integration of a ground network and a non-ground network is solved.

The invention discloses a multi-network mode switching method. The nearest residence time and the switching sign of each frequency point are counted; the penalty function of the frequency point is arranged according to the switching sign and the residence time of the frequency point, the penalty function is updated in each measuring period, and the measuring result is amended based on the penalty function; the measuring result after being amended is compared with the presetting threshold to judge whether a switching action is touched off or not. At the same time, the invention also discloses a multi-network mode communication device which consists of a network mode measurement module, a switching sign setting module, a penalty factor setting module, a RSSI amendment module, a network mode switching judging module, a network mode switching performing module and a penalty frequency point set updating module. Through providing the multi-network mode communication device and the switching method thereof, the invention reduces the probability of pointless switching, effectively prevents fake signals which are unsuitable to reside from influencing the stability of the system, and improves the stability of the network residence and the service.

The invention discloses a method for realizing switching among mobile management domains, comprising the following steps: determining the local mobile anchor LMA1 of a first mobile management domain initially attached with mobile node MN to be session mobile anchor SMA, and establishing a first connection between the MN and the LMA1; establishing a second LMA1 MN and the mobile anchor LMA2; establishing a bidirectional tunnel between the LMA2 and the SMA; updating the proxy binding relation of the SMA; transmitting data sent and received by the MN and the bidirectional tunnel. The invention also provides a corresponding network entity. The invention solves the problem of switching among PMIPv6 domains, provides more efficient data transmission path and shorter communication time delay, adopts the mobility management scheme based on network, completely dispenses with terminals and is easy to realize.

The invention relates to a motor train unit key data wireless transmission protection method based on a dual-mode navigation system, which belongs to the field of a high-speed motor train unit wireless communication protection method. The method comprises the following steps: respectively additionally arranging an AP wireless network and a communication device of a BDS Beidou navigation system for a motor train, respectively transmitting train key data to other motor train units or ground operation dispatching command centers according to bi-directional short messages of a priority sequence of AP wireless network, GPRS network and BDS Beidou navigation system, so that high cost performance and high efficiency of the AP wireless network and the communication advantages of BDS Beidou navigation system can be sufficiently utilized, and the wireless transmission timeliness and reliability of the motor train unit key data can be greatly improved. By adopting the method, data with lower requirement on timeliness is only transmitted by virtue of WIFI of AP wireless network when the motor unit train enters a station or enters a garage, and the data transmission pressure can be alleviated.

The invention discloses a code division multiple access (CDMA) system and an A17 interface compatibility realization method, belonging to the mobile communication technology field. The method comprises the following steps: in the CDMA system, a corresponding relation between a version number and an interface structure in an access network is configured; when A17 interface switching happens, a source access network and an object access network acquire version information of an opposite side respectively through message interaction; according to the corresponding relation between the version number and the interface structure, the source access network and / or an object access network compare / compares a self version with a version of the opposite side, if versions are inconsistent, one side of a higher version converts a sent A17 message into a format of a lower version to carry out sending, and converts an A17 message received by an access network of the lower version into the self version to carry out processing. According to the system and the method in the invention, an incompatible problem between different A17 interfaces in A17 switching between different access networks in the CDMA system is solved, and switching failure caused by incompatibility is avoided.

The embodiment of the invention discloses a communication system, a communication method and a storage medium, and relates to the technical field of ETC (Electronic Toll Collection), the communicationsystem comprises a plurality of road side units (RSUs), wherein the plurality of RSUs are separated with each other, and an OBU is provided with a satellite positioning module for providing satellitepositioning information; a positioning information calibration device used for providing auxiliary positioning information; and a control device used for obtaining calibration positioning informationaccording to the satellite positioning information and the auxiliary positioning information, and then switching to the corresponding RSU and OBU for information interaction according to the calibration positioning information. The system has the advantages that the low power consumption of the to-be-positioned terminal can be ensured on the premise that the vehicle positioning precision is ensured; the RSU is switched in a non-inductive manner in an interaction process of the RSU and the OBU; under the condition of continuous coverage of the RSU, the problem of how to switch the mobile vehicle within each coverage range is solved.

A direct-drive power generation control method for a sensorless permanent magnet motor. A full-order observer pole is moved to the left relative to a motor pole to obtain a unified feedback gain matrix, a method of setting estimated rotation speed initial value is adopted to allow the unified feedback gain matrix to adapt to the running of a rotated permanent magnet motor restarted in a sensorlessand the permanent magnet power generation control in the full working conditions. The rotated permanent magnet motor is restarted in the sensorless, the switching of the permanent magnet in the powergeneration process is controlled, and a method of setting the q-axis current reference value of a bus voltage regulator is adopted to suppress the impact current in the switching process. The direct-drive power generation control method can be stably operated in the total speed range, the feedback gain matrix does not need online switching in the restarted rotated permanent magnet motor and permanent magnet motor power generation running, and the switching impact current is small between different work conditions in the full speed range.

The invention relates to a global position system (GPS) receiver technology, in particular to a global position system receiver with high sensitivity for the location and navigation, which is applied in a high sensitivity navigation receiver in an interior environment, and an indoor and outdoor seamless switching method. The receiver is a partial structure of an assistant satellite navigation location system (AGNSS); the assistant satellite navigation location system (AGNSS) comprises at least a constellation, the antenna, an emitting frequency circuit, a location server and a reference receiver etc; the components are combined into an integrated location system. The method realizes the seamless switching method between the interior and the exterior through three switching methods; the invention mainly solves the related technical problems, such as the integrated hardware and the software for the seamless switching method between the interior and the exterior. The invention has the positive effects that the storage capture and the flow follow are realized for the more rapid and exact location; the invention improves the sensitivity index of the end user; the invention has the advantage of the realization of seamless switch under the condition of two signals with simplicity and reliability.

The embodiment of the invention provides a space-ground integrated mobile access authentication method and device, and the method comprises the steps that an air-based access point obtains the position change amplitude between a user terminal and the air-based access point, and obtains the change information of a user identity module relative to terminal equipment, wherein the user identity moduleis a device for storing an access identifier and a user certificate of a user, and the terminal equipment is a device for identifying the user identity module and receiving user authentication information; and performing access authentication on the user terminal based on the position change amplitude and the change information. Access identification information in the user identity module and information encrypted by a secret key in a certificate of the user identity module are compared with an authentication center database, so that authentication of a user is realized; and meanwhile, the problem of periodic network switching of the equipment caused by relative movement of an access switching router and the user terminal is solved, the access authentication program of the user terminalis simplified, and the access efficiency of the user terminal is improved.

The invention relates to a multi-user switching method based on business characteristics in the 5G network. The method comprises steps that a one's own switching message and a business characteristic type of initial user equipment are broadcasted, surrounding user equipment acquires the message and identifies a DPI (depth packet inspection) unit of an entity through one's own business characteristics to acquire the one's own business characteristic type, if the business characteristics and use characteristics of the initial user equipment are identical in types, a switching adding request is emitted, after confirmation of a present access router and / or a target district access router, adding to the switching process of the initial user equipment is carried out. According to the method, in combination with communication business continuity guarantee development requirements in the 5G network, on the condition that the present access router and / or the target district access router employs same processing modes for same business characteristics, e.g., equal bandwidth distribution, an improvement method is provided for small district users, generation of control signaling is reduced, and user QoS is improved.

The invention relates to a water machine automatic in filter element popping and water way switching. The water machine comprises a filter element, a ratchet component and a pressure component, the pressure component comprises an electromagnetic switch, the ratchet component comprises a ratchet seat and a pawl, one end of the pawl is hinged to a vertical rod which is perpendicularly connected withthe upper end of the electromagnetic switch, and the other end of the pawl is abutted against a clamping tooth portion on the upper-portion outer wall of the ratchet seat; a core bar of the electromagnetic switch extends and descends to control fixing and shifting of the pawl so as to enable the ratchet seat to be fixed or to rotate; the lower portion of the filter element is detachably connectedwith the upper portion of the ratchet seat, and a torsion spring is arranged at the lower end of the ratchet seat; a filter element base is arranged in the ratchet seat in a sleeved manner, a movablesliding seat is arranged in the filter element base in a sleeved manner, and a first spring is arranged between the bottom of the movable sliding seat and the bottom of the filter element base.

The invention provides a method for achieving an offline desktop under a desktop cloud environment. The method provided by the invention has the advantages that high consistency between a corresponding mirror image on a remote desktop virtual machine and mirror image data on a terminal can be effectively guaranteed when a user carries out switching between the remote desktop virtual machine and alocal virtual machine for office work, so that document data in the mirror image can be prevented from loss or inconsistency when the user carries out the switching, and the user can normally access the data on the virtual machines for daily office work no matter whether the terminal is offline or online.