56results about How to "Load sharing" patented technology

A vibration actuator includes a coil that extends in a vibration direction and has a flat shape and a magnet that extends in the vibration direction and has a flat shape, so that a case can be made flat or low profile. A weight portion is supported by a shaft, so that, when a drop impact is applied, the weight portion can move along the shaft and the weight portion is not freely moved in the case. A coil spring is disposed between a spring receiving portion and a weight portion. Therefore there is no unnecessary space in the case, so that space can be saved and the vibration actuator can be made compact.

A method for replicating databases, in which method at least two databases are replicated, each database comprising of one or more tables, and each table having data and a unique tree index comprising index keys and hierarchical sums of cyclic redundancy check values calculated from the data on each tree index level. In the method logical consistency of the data between corresponding tables in the databases is maintained by comparing the sums of cyclic redundancy check values of the database tables; and if a difference between the sums of the cyclic redundancy check values is found, the tree indexes are logically divided into two sub tree indexes, and the sums of the cyclic redundancy check values of the sub tree indexes are compared to each other and the comparison and division is continued until the data causing the difference is found, and the inconsistent data is replicated between the databases.

Smart-Man's Layer 4 (SML4) is a process in which the TCP / IP stack is manipulated on a set of computer systems to enable Layer-4 switching (load balancing and failover) of a set of IP Addresses without the use of an expensive dedicated, specialized Layer-4 switch dedicated to performing the Layer-4 switching. SML4 supports any application which uses TCP stream sockets for data transfer. SML4 requires no special or non-standard handling of packets on the network switches the systems are connected to.

Multistage brush seals are made by initially specifying designs thereof for collectively sharing a differential pressure along an adjacent land subject to relative rotation with the seals. The seals are modified to share the loading without blowdown therefrom. The seals are further modified to ensure rotational stability with the land. The seals are built and tested under pressure to determine pressure blowdown thereof. And then, the seals are again modified to share the pressure loading under blowdown. In this way, the seals share the load in situ under the effects of blowdown.

The invention relates to a zoom lens that enables an optical path to be easily bent by a reflecting optical element, has a wide-angle design and high optical performance as represented by a high zoom ratio of about 3.4, is extremely slimmed down in the depth direction, and costs less. The zoom lens comprises a positive first lens group G1, a negative second lens group G2, a positive third lens group G3, a positive fourth lens group G4 and a negative fifth lens group G5. Upon zooming from the wide-angle end to the telephoto end, the first lens group G1 remains substantially fixed with respect to an image plane I, and at least the second G2 and the fourth lens group G4 move. The first lens group G1 includes a reflecting optical element for bending the optical path involved, and a portion of the first lens group G1 on an object side with respect to the reflecting surface has negative refracting power. The zoom lens satisfies condition (1) with respect to the focal length of the fifth lens group G5.

The invention discloses a wireless network planning method of the code division multiple access service. After the traffic density distribution diagram and the regional initial network topology in the planning region are generated according to the population database, the user distribution rate in the strongest pilot frequency coverage area in each cell of the planning area is calculated, and the absolute value of the difference value between the user distribution proportion in each cell of the planning area and the network average user proportion is compared with the absolute value of the load difference value threshold, if the comparison result is that the absolute value of the proportion difference value is larger than the absolute value of the load difference value threshold, the network topology of the station point of the cell opposite to the proportion difference value is adjusted, and the user distribution proportion in the cell is re-calculated to perform comparison and adjustment, and otherwise, the current planning result is output. The technical proposal of the invention simulates the actual user distribution and adjusts the network topology by utilizing the population database, the load average distribution in the cell of the planning areas is realized to the maximum extent, and the difficulty of the later network optimization is reduced.

The invention discloses an on-line social network mass data storage method based on community division. With a graph structure of a social network serving as the starting point, firstly, the social network is divided into a celebrity user layer and a common user layer according to node degrees, and then the community division is conducted on each layer through a modularity optimization method. A small group forming strategy is designed to preprocess an initial network, a supernet is formed, and an edge weight optimization scheme is adopted for merging super nodes step by step so as to improve the modularity. After the community division is completed, common user data are stored preferentially, user data of the same community are stored in the same server node, celebrity user data are preferentially considered to be stored in the server with the most fans, and then the celebrity user data are secondly considered to be stored in the server node where the community of the celebrity user data are located. By the design that the celebrity user data are stored in a multi-replication mode, the load of a single server is reduced; since social network data are stored through the community division method, the locality of access can be improved, and communication expenditure can be reduced.

A vibration actuator includes a coil that extends in a vibration direction and has a flat shape and a magnet that extends in the vibration direction and has a flat shape, so that a case can be made flat or low profile. A weight portion is supported by a shaft, so that, when a drop impact is applied, the weight portion can move along the shaft and the weight portion is not freely moved in the case. A coil spring is disposed between a spring receiving portion and a weight portion. Therefore there is no unnecessary space in the case, so that space can be saved and the vibration actuator can be made compact.

The invention discloses an agricultural wireless sensor network system. The agricultural wireless sensor network system mainly comprises a sensor network and a cloud storage network, wherein the sensor network mainly comprises terminal nodes, routing nodes and a coordinator, the sensor network protocol forwards data of the terminal nodes between the routing nodes, the terminal nodes are powered by batteries, and the terminal nodes and the routing nodes enter the total power dissipation mode during data transmission and receiving and shift to the sleep mode after completion of the data transmission and receiving; and the cloud storage network comprises a cloud storage server, cloud monitor software and sensor monitor software. By adopting the agricultural wireless sensor network system, the data of the terminal nodes can reach to the objective nodes through different paths, so that power consumption is lowered, and cloud storage networks using clustering technology design have good scalability.

An overrunning clutch is provided having inner and outer members disposed about a rotational axis with the outer member radially outward of the inner member. The clutch further includes a plurality of pins projecting from one of a radially inner surface of the outer member and a radially outer surface of the inner member. The clutch further includes one or more pawls coupled to one of the inner and outer members. Each of the pawls is movable between an engagement position wherein the pawl is engaged with one of the pins to transmit torque between the inner and outer members and a disengagement position wherein the pawl is disengaged from the pin to permit relative rotation of the inner and outer members. In one embodiment, different pawls assume their respective engagement position depending on the rotational direction of the one member.

The invention relates to an all-station power quality monitoring device and monitoring method applicable to an intelligent transformer substation, and belongs to the technical field of power supply management. The device mainly comprises a main system utilizing a multi-core processor as a core, process-level Ethernet communication cards, a station-level Ethernet communication card, a data memory module, an MMI (multimedia interface) module, a device debugging module and a power module, wherein the multi-core processor is connected with the process-level Ethernet communication cards, the station-level Ethernet communication card and the data memory module through expansion slots of a PCIE (peripheral component interface express) bus, and is in communication connection with the MMI module and the device debugging module through a USB (universal serial bus) interface and a network interface respectively. According to the all-station power quality monitoring device and monitoring method applicable to the intelligent transformer substation, the Ethernet communication cards provide gigabit interfaces, so that all-station sampling value messages can be received by an Ethernet switch, and 60-way monitoring points can be simultaneously monitored at most.

The invention discloses a sharing method and device of load between user service boards of a rack-mounted wireless controller. The method comprises the following steps of: S1, carrying out shunt control on received upstream flow by an interface board, and intercepting relevant field information in a data frame; S2, calculating the intercepted relevant field information according to a shunt rule designed by users; S3, reconstructing the data frame according to the calculating result, modifying the corresponding field of the message or adding additional user-defined identification, so that the upstream flow entering the interface board meets the shunt condition; and S4, carrying out shunt control on the upstream flow to be transmitted by the interface board. By adopting the sharing method and device, wireless services with the same virtual local area network (VLAN) identification can be flexibly shunted into different service processing boards in the stand, so that single IP downstream of the whole unit is realized, and the user service load can be shared.

The embodiment of the invention discloses an extension method and device for a distributed database. The method comprises the steps that when it is determined that a data host has access to a data access service, a new data distribution strategy is set for all data hosts according to an extension target; after it is determined that data corresponding to the new data distribution strategy starts migration, the state of the new distribution strategy is set to be in migration; and after migration of the data corresponding to the new data distribution strategy is completed in a table routing mode,the new data distribution strategy is used to replace an old data distribution strategy.

Smart-Man's Layer 4 (SML4) is a process in which the TCP / IP stack is manipulated on a set of computer systems to enable Layer-4 switching (load balancing and failover) of a set of IP Addresses without the use of an expensive dedicated, specialized Layer-4 switch dedicated to performing the Layer-4 switching. SML4 supports any application which uses TCP stream sockets for data transfer. SML4 requires no special or non-standard handling of packets on the network switches the systems are connected to.

The invention relates to a login method, an account management server and a client system. The login method includes the following steps that: a first login request transmitted by a first application server is received, wherein the first login request contains a first application identifier; identifier code information is generated according to the first application identifier; the identifier code information is transmitted to the first application server; verification information transmitted by a second application server is received; the verification information is verified; after the verification information passes the verification, a verification result is transmitted to the second application server, so that the second application server can forward the verification result to a second client for confirmation; after confirmation information returned by the second application server is received, a login confirmation message containing the first application identifier is transmitted to the first application server, so that the first application server can accept that a first client performs login through a first application. With the login method provided by the embodiment of the invention adopted, two different services can be effectively separated, and therefore, the load of the servers can be shared, and the expansion of different applications of the same account is flexible.

The invention relates to a zoom lens that enables an optical path to be easily bent by a reflecting optical element, has a wide-angle design and high optical performance as represented by a high zoom ratio of about 3.4, is extremely slimmed down in the depth direction, and costs less. The zoom lens comprises a positive first lens group G1, a negative second lens group G2, a positive third lens group G3, a positive fourth lens group G4 and a negative fifth lens group G5. Upon zooming from the wide-angle end to the telephoto end, the first lens group G1 remains substantially fixed with respect to an image plane I, and at least the second G2 and the fourth lens group G4 move. The first lens group G1 includes a reflecting optical element for bending the optical path involved, and a portion of the first lens group G1 on an object side with respect to the reflecting surface has negative refracting power. The zoom lens satisfies condition (1) with respect to the focal length of the fifth lens group G5.

The invention discloses a three-node BIOS continuous integration platform and method. The platform comprises a Jenkins master node, a Jenkins slave node and a VCS source code library, and the Jenkinsslave node includes a compiling server and a testing server; the VCS source code library is used for receiving and storing source codes to be tested; the Jenkins master node is used for detecting whether or not the VCS source code library stores the source codes to be tested, if yes, obtaining the source codes to be tested from the VCS source code library and sending the source codes to be testedto the compiling server; the compiling server is used for compiling the source codes to be tested to obtain a BIOS Image and utilizing a BMC to burning the BIOS Image to a system to be tested; the testing server is used for utilizing BAT to run BIOS firmware automated testing suite to test the system to be tested and generating a test report. According to the platform, the Jenkins master node conducts detection and acquisition, the compiling server conducts compiling and burning, the testing server conducts testing, the functions are achieved by the three server nodes, automated testing is achieved, the load of all the servers is shared, the testing efficiency is improved, and the testing speed is increased.

The invention discloses a parallel connection method of different capacity level UPS, which is to solve the problems of the poor system precision and the poor stability precision ofoutput voltage caused by structuring the droop characteristics of UPS to realize the parallel connection between different capacity level UPS in the prior art. The method includes the following steps that: the physical output current is per-united according to the physical capacity of each stand-alone; each per-united physical output current is averaged to get the per-united equalized value of the physical output current of each stand-alone; the per-united physical output current value and the physical equalized current value are respectively converted to get the physical output current per-united value and physical equalized current per-united value of each stand-alone; the physical output circuit of each stand-alone is controlled by taking advantage of the error between the physical output current per-united value and physical equalized current per-united value of each stand-alone. The invention discloses a different capacity level UPS parallel system at the same time.

The invention provides a sparrow nest eave roof structure. The sparrow nest eave roof structure comprises roof water-proof coiled materials, a steel structure and a wooden column or an outer wall. The roof water-proof coiled materials and the wooden column or the outer wall forms a triangular structure. The steel structure is located in the triangular structure. The eave part of the roof water-proof coiled materials is provided with a wood purlin. The upper portion of the wood purlin is provided with a pouch rafter parallel with the roof water-proof coiled materials in an erected mode, and the upper portion of the pouch rafter is further provided with a roof boarding parallel with the roof water-proof coiled materials in an erected mode. The upper portion of the roof boarding is provided with a layer of blue roofing tiles in a laid mode in the direction of the roof water-proof coiled materials. The lower end of the wood purlin is provided with a wood brace. One side of the wood brace is connected with a teapot-crosspiece-shaped hall rafter. The teapot-crosspiece-shaped hall rafter is located on the lower portion of the steel structure. The other end of the teapot-crosspiece-shaped hall rafter is connected with the wooden column or the outer wall. According to the sparrow nest eave roof structure, N right triangular steel structure truss slices are plugged in the triangular gaps of the roof, according to the triangle steel structure truss slices, the sinking phenomenon caused by the over-long purlin is avoided effectively, integration is guaranteed, and the structure is unique in structure, concise in construction and convenient to install.

The present device includes gears with bending compliance in the outer portion of the gear teeth to reduce gear noise. The present device reduces the variation in gear stiffness by introducing bending compliance in the outer portion of the gear tooth, by way of a cutout or relief area in the distal end of the tooth.

The invention relates to an interface server setting method for a railway scheduling centralized CTC system. The method comprises the steps of setting multiple RBC interface servers according to different railway lines; setting multiple TSRS interface servers according to a scheduling station; respectively setting a GSM-R interface server according to a high-speed railway line and an ordinary-speed railway line; setting an adjacent railway bureau HSRC interface server according an adjacent railway bureau high-speed railway center which is connected with a CTC; setting an adjacent railway bureau OSRC interface server according to an adjacent railway bureau ordinary-speed center which is connected with the CTC; setting a railway general company system (RGCS) interface server according to a high-speed railway center and an ordinary-speed center which are constructed by the railway general company; setting a TIIP interface server for a transportation information integrated platform; setting a TDCS interface server for a train dispatching and commanding system (TDCS); and connecting all interface servers with a CTC system. The interface server setting method according to the invention has advantages of sharing the load of the interface server, preventing mutual interference of the interfaces and improving performance of the whole system.

The invention relates to a three-supporting structure for the frequency conversion screw rod type refrigerating compressor shaft system. The three-supporting structure comprises a machine casing, a machine casing end cover, a bearing seat, a motor positioned inside the casing and composed of a stator and rotors as well as a female and a male screw rod rotors inside the machine case, wherein, the casing is positioned in the middle of the compressor, and the end cover of the machine casing and the bearing seat are respectively positioned at the left side and the right side of the machine casing. The three-supporting structure is characterized in that a first group of bearings, a second group of bearings and a third group of bearings are respectively installed in the bearing seat, the machine casing and the casing end cover, in order to form three supporting points; the first group of bearings and the second group of bearings are used for supporting the screw rod rotors of the compressor, and the second group of bearings and the third group of bearings are mainly used for supporting the motor rotors. The three-supporting structure adopts three bearings for load bearing, and has the advantages that the load is effectively distributed, the swinging of the motor rotors is fundamentally avoided, the negative effects caused by the swinging are prevented, and both the noise and the vibration of the compressor are effectively reduced, thus the system performance is improved.

The invention provides a water, fertilizer and pesticide integrated self-diagnosis irrigation expert system control device which comprises a sensor input circuit, an electromagnetic valve fault detection circuit, a proportional valve driving circuit, an MCU1, an SD memory circuit, an MCU2, an MCU3, a GPRS DTU module, an interface chip 8255 and a memory 6116, wherein a control port of the sensor input circuit is connected with a P3 port of the MCU1, and a D / A port of the sensor input circuit is connected with the proportional valve driving circuit; and the MCU1 is a master controller, a serial port A of the MCU1 is connected with a serial port A of the MCU2, a serial port B of the MCU1 is connected with a serial port B of the MCU3, the MCU1 is also connected with the SD memory circuit, a serial port B of the MCU2 is connected with the GPRS DTU module so as to carry out wireless data communication, and a serial port A of the MCU3 is connected with the serial port B of the MCU2 so as to be used as a communication backup interface. The device provided by the invention realizes spray of fertilizers and pesticides and realizes automation of agricultural management; the three MCU systems are adopted to realize control accuracy and are matched with the shared memory to realize information exchange; and the system performs self-diagnosis and localization of faults, and data communication adopts a key data header so as to guarantee the confidentiality and safety of the data communication.

An overrunning clutch is provided having inner and outer members disposed about a rotational axis with the outer member radially outward of the inner member. The clutch further includes a plurality of pins projecting from one of a radially inner surface of the outer member and a radially outer surface of the inner member. The clutch further includes one or more pawls coupled to one of the inner and outer members. Each of the pawls is movable between an engagement position wherein the pawl is engaged with one of the pins to transmit torque between the inner and outer members and a disengagement position wherein the pawl is disengaged from the pin to permit relative rotation of the inner and outer members. In one embodiment, different pawls assume their respective engagement position depending on the rotational direction of the one member.

The invention relates to a sine wave inverter which can work in parallel and a control method thereof, belonging to a sine wave inverter. Including inverter circuit and inverter control circuit, the inverter control circuit includes PLC chip and its peripheral control circuit, power line, PLC and synchronous control DSP, inverter and current sharing control DSP, voltage sampling and shaping circuit, output voltage sampling circuit , Output current sampling circuit, drive control circuit. PLC and synchronous control DSP adjust the voltage reference sinusoidal signal of each inverter to keep the same frequency and phase. Calculate the power difference by power, and use the power difference to fine-tune the phase and amplitude of the reference signal respectively to realize current sharing control. The invention does not need signal interconnection wires, has strong communication immunity and high reliability, and is applied to a sine wave inverter control system without signal interconnection wires to realize complete electrical isolation and hot swapping of each inverter.

The invention provides an inverter and a control method thereof. The inverter is characterized in that a DC / DC circuit comprises a first boosting branch and a second boosting branch which are connected in parallel; and switching pieces in the first boosting branch and the second boosting branch are controlled by a controller. The configuration and control method of the controller are as follows: afirst voltage outer loop adjusting unit is configured to calculate and output a direct-current bus current expected value according to a direct-current bus voltage expected value and a direct-currentbus voltage real-time value; a first current inner loop adjusting unit is configured to calculate and output a control signal of the first boosting branch according to a direct-current bus current expected value and the chopping current of the first boosting branch; and a second current inner loop adjusting unit is configured to calculate and output a control signal of the second boosting branchaccording to the direct-current bus current expected value and chopping current of the second boosting branch. The DC / DC circuit of the inverter system adopts a double-path parallel boost chopper circuit, so that the high boost transformation ratio of the inverter under low-voltage input can be realized, and the low-voltage loading capacity of the inverter is improved.

A shock absorber mounting bracket reinforcing structure is provided, which includes a shock absorber mounting bracket provided at a rear wheel house inner panel, and left and right reinforcing members which are provided on left and right sides of the shock absorber mounting bracket to support the left side and the right side of the shock absorber mounting bracket.

The invention discloses a data access platform system for barrier gate system of parking lot. The system comprises at least one parking lot barrier gate system, at least one load balancing module, atleast one web server, at least one message middleware MQ and a platform system, and is characterized in that the parking lot barrier gate system is used for capturing vehicle entry information and vehicle exit data and uploading the vehicle entry information and the vehicle exit data to the corresponding load balancing module. The load balancing module is used for receiving the vehicle entry information and the vehicle exit data of the parking lot barrier gate system, performing the load balancing module and then uploading the data to the corresponding web server. The web server is used for sending the received vehicle entry information and vehicle exit data to the corresponding message middleware MQ. The message-oriented middleware MQ is used for temporarily storing vehicle entry information and vehicle exit data; and the platform system is used for acquiring the vehicle entry information and the vehicle exit data temporarily stored by the message middleware MQ. Integration and utilization of data of the parking lot barrier gate system are facilitated.

The invention relates to the technical field of geological exploration, and particularly discloses penetration equipment. The penetration equipment comprises a rack, a lifting assembly and a hammering assembly, wherein the lifting assembly is used for driving the hammering assembly to ascend and descend, and a lifting block capable of ascending and descending is arranged on the lifting assembly; the hammering assembly comprises a drop hammer and a hammering frame with a hammer seat and a guide rod, the drop hammer is vertically connected to the guide rod in a sliding mode, the drop hammer can hammer the hammer seat, a latch piece is arranged on the drop hammer, and the latch piece is used for being lifted by the lifting block when the drop hammer ascends; and a driving structure and a moving block are arranged on the hammering frame, the driving structure is used for driving the moving block to transversely extend out towards the lifting assembly, and the moving block can be supported by the lifting block after extending out. According to the scheme, the problems that in the prior art, potential safety hazards exist in the process of lengthening the length of a probe rod, and the labor intensity of workers is large are solved.

The invention relates to a floating ball connection device for aquaculture. The device includes a floating ball, a fixing inserting column, a fixing seat and a fastening nut. The top of the floating ball is provided with a connection vertical plate, a tooth column hole is formed inside the connection vertical plate, and tooth grooves are evenly distributed inside the tooth column hole. An inserting column plate is arranged in the middle of the fixing inserting column, a tooth column is arranged in the left portion of the inserting column plate, external teeth are evenly distributed outside thetooth column, the tooth column is inserted into the tooth column hole, and the external teeth are matched with the tooth grooves. A cylinder is arranged in the left part of the inserting column plate, a cylindrical hole is formed inside the floating ball, and the cylinder is inserted into the cylindrical hole. Stepped holes are symmetrically distributed inside the fixing seat, a tooth column internal threaded groove is formed inside the tooth column, and a cylindrical internal threaded groove is formed inside the cylinder. Inner hexagon bolts are inserted into the tooth column internal threaded groove and the stepped holes, inner hexagon bolts are inserted into the cylindrical internal threaded groove and the stepped holes, and the fixing seat is connected with the fixing inserting column.