200results about How to "Avoid outages" patented technology

The invention discloses a method and a device for maintaining an MAC table entry inside a distributed network processing system, which are applicable for the distributed network processing system including an interface board and a plurality of service boards. The method includes the following steps: studying on the MAC table entry is carried out on the service boards according to a message flow forwarded by the interface board; the MAC table entry required to be studied is saved in a first MAC table at the local area and is saved inside a first MAC table of other service boards as well as a second MAC table maintained by the interface board at the same time; aging maintenance is carried out for the second MAC table according to the message flow of the interface board and the corresponding MAC table entry inside the first MAC table is deleted at the same time. The invention also discloses a distributed network processing system. Thereby, data transmission interruption caused by re-studying a MAC address is avoided, the continuity and efficiency of data transmission processing is guaranteed, and problems of data packet loss and flooding caused thereof are avoided.

The invention discloses a no-lightning-conductor power transmission line design method for a heavily icing region, and the method comprises the steps: reconstructing a pole and a lightning conductor; obtaining the parameters and historical data of a reconstructed line; replacing a common insulator of the reconstructed line with an icing flashover resistant composite insulator with an anti-thunder function; carrying out the simulation analysis of the icing flashover resistant composite insulator with the anti-thunder function, and determining an external structure of the icing flashover resistant composite insulator and the parameters of a zinc oxide valve block of the insulator; carrying out testing; and completing the no-lightning-conductor power transmission line design for the heavily icing region. The method prevents the breakage of an icing lightning conductor from causing a line outage accident, greatly reduces the construction cost of a power transmission line, and facilitates the construction and installation of a line and a pole. The icing flashover resistant composite insulator with the anti-thunder function is employed in the method, and the insulator can be resistant to thunder and icing flashover, thereby improving the capability of resisting ice disasters and thunder disasters of the power transmission line, and guaranteeing the stable operation of the line. Moreover, the installation is simple and convenient, and the original structure of the pole does not need to be changed, thereby saving the cost in equipment selection and power grid construction.

The invention relates to the field of parallel computation, and discloses a parallel computation dispatch method in the heterogeneous environment. According to the method, a plurality of JVM task slots having different internal storages, and idle task slot sets are built, tasks in the parallel computation are divided into I/O intensities and CPU intensities, the tasks are appointed to suitable task slots for calculation, and parallel calculation efficiency in the heterogeneous environment is optimized. The parallel computation dispatch method has the advantages that the sizes and the types of the internal storages required by the tasks are determined dynamically, resource using efficiency of heterogeneous clusters is improved, total operation time of the parallel calculation work is shortened, and the situation that the internal storages overflow in a task operation process is avoided.

A satellite-based information transmission system mainly comprises a Beidou user machine, information transmission equipment, a multifunctional integrated service terminal and satellite communication antennas, wherein the information transmission equipment performs interaction of control information with the satellite communication antennas and the Beidou user machine through serial ports, and performs data transmission with the information integrated service terminal by use of a satellite channel and a Beidou channel; and the information transmission equipment includes a main control board, an adapter plate, a power module, a power panel and a modulation and demodulation module. A software system of the information transmission equipment adopts a bus distributed structure, an equipment control module is designed to include three layers, and the layers are respectively responsible for mutually independent tasks, thereby improving the cohesion of modules, reducing the coupling degree, and maintaining independence of the modules. The information transmission equipment can support two satellite communication antennas, and when one of the satellite communication antennas is shielded, a satellite communication link can be continued to be kept uninterrupted as long as the satellite communication antenna is switched to the other satellite communication antenna that is not shielded.

The invention discloses a method for optimizing and adjusting the threshold level of a receiver and a device. The method comprises: the light power received by a light receiver is monitored; whether the amplitude of fluctuation of the light power is bigger than a preset value is judged, if yes, the present initial value of the threshold level is updated according to the light power; the error signal of the transmission signal is acquired from the output end of the light receiver; whether the threshold level needs to be adjusted is judged according to the error signal, if yes, according to the present initial value, the error signal is further analyzed, and the analysis result is acquired; if no, the execution program is directly jumped out; according to the analysis result, the threshold level is adjusted starting from the present initial value. The method and the device monitor the received light power, and set up the initial value of the threshold level according to the received light power, thereby avoiding the system service from being interrupted because of the long-time search of the initial value of the threshold level caused by the change of the light power, and greatly improving the stability of the system.

The invention discloses a mobile phone dialing method and system based on blinking electromyographic signal detection. The method comprises the following steps that 1, the electromyographic signals of a human body are collected through Bluetooth brain electromyographic headphones and are sent to a mobile phone in a Bluetooth mode; 2, data processing is carried out on the received electromyographic signals in the mobile phone to recognize whether a blinking action exists or not; 3, scanning dialing is carried out based on the recognized blinking action. The mobile phone dialing method and system based on the blinking electromyographic signal detection are easy to implement, high in real-time performance, high in accuracy, and capable of efficiently serving disabled people, injured people, the physically disabled and other special people.

The invention relates to the technical field of combining wireless network technology and internet protocol (IP) speech technology, in particular to a multiple-session initiation protocol (SIP) server layout method in a wireless Mesh network. The method comprises the following steps of: measuring the communication quality of a wireless link in the wireless Mesh network; laying out SIP servers; and selecting routes so that a router accesses the SIP servers. The method has the following main advantages that: 1, the SIP servers are arranged in each partition region for providing calling access service as possible when the network is partitioned so as to ensure that speech communication functions in each region can be normally used; and 2, a group of reliable paths leading to the SIP servers which are laid out at different positions are selected for SIP agents on all the router nodes, so that the influence of single-point fault of the wireless link and the servers can be eliminated, and access loads are distributed on the selected server nodes. The method solves the problem that the instability of the wireless link has negative effect on an SIP-based speech calling service in the wireless Mesh network.

The invention provides a switching method, a terminal, a base station and a computer readable storage medium. The method comprises the following steps of detecting whether a signal measurement value of a serving cell is lower than a first preset threshold or not, and judging whether a switching indication issued by the serving cell is not received; if a judgment result is yes, acquiring neighbor cells with the signal measurement values larger than a second preset threshold, selecting one of the neighbor cells as a target cell, and acquiring an access parameter of the target cell; making an access request to the target cell according to the access parameter of the target cell, wherein the access request carries information of the serving cell, and an access reason is switching; and switching from the serving cell to the target cell for service processing according to the indication of the target cell, wherein the second preset threshold is greater than the first preset threshold. By means of the scheme, the terminal does not need to passively wait for issuing a switching instruction to the serving cell, and an active request is switched from the serving cell to the neighbor cell with better signal-receiving capacity, so that the service is continued to be carried out, and the occurrence of the service interruption situation is avoided.

The invention relates to a laundry treatment device (1) with at least one removable liquid container (7, 10), wherein the liquid container (7, 10) can be locked against removal by means of at least one locking mechanism (13, 14) of the laundry treatment device (1) and the at least one locking mechanism (13, 14) can be electrically actuated by the laundry treatment device (1).

The invention discloses IPsec-based (internet protocol security-based) keep-alive method and equipment for NAT (network address translation) entries. The method includes: establishing IKE SA (internet key exchange security association) between the equipment and an IPsec responder by an IPsec initiator, establishing IPsec SA between the equipment and the IPsec responder by the IKE SA, and starting an NAT messaging timer corresponding to the IKE SA; allowing the IPsec initiator to determine whether the IKE SA or IPsec SA is last one in an SA set or not when the IKE SA or the IPsec SA is deleted; if yes, allowing the IPsec initiator to delete the NAT messaging timer; and if not, allowing the IPsec initiator to reserve the NAT messaging timer. Interruptible flows can be avoided by the use of the method and equipment.

The embodiment of the invention provides a client, an access point, a communication system and a switching method. When the client moves close to a first access point and then close to the second access point and is located in a commonly coverage range of the first and second access points, a signal receiving module is used for receiving signals from the first and second access points through an omnidirectional antenna. A switching condition judging module judges whether the switching condition is met or not according to the signal strength of the signal received at the first access point or the signal strength of signals received at the first and second access points. If so, a switching command is sent to a switch executing module. The switch executing module is used for starting a switching program to switch the client from the first access point to the second access point according to the switch executing command. The client, the access point, the communication system and the switching method ensure the switching reliability.

The method includes steps: setting up adjacent tasks for each task in advance, and allocating shared memory area for each task; each task backs up own data link information to own shared memory area; when monitoring abnormal adjacent task, the task obtains information of normal data link from shared memory area of adjacent task, and based on the information of data link to take over data link of the adjacent task. The invention also discloses data link protection equipment, which includes module of monitoring abnormity, data link taking over module, and data link backup module. The invention reduces, even prevents phenomena of data link interruption from occurring, and raises stability, anti attack capability of system.

An embodiment of the invention discloses a platform screen door intelligent sensing and evaluating system and a platform screen door intelligent sensing and evaluating method based on wireless data jump transmission. The platform screen door intelligent sensing and evaluating system is characterized in that each wireless communication module is configured as a main node or a child node, and receives operation and maintenance data uploaded by a corresponding sensing module in real time; the child nodes select operation and maintenance data transmission links according to the corresponding configuration relationships, and subject the received operation and maintenance data to jump transmission to the corresponding main nodes based on the operation and maintenance data transmission links; andthe main nodes summarize the operation and maintenance data undergone jump transmission by the child nodes and the operation and maintenance data of the child nodes, and upload the operation and maintenance data to a background control cabinet. By adopting the platform screen door intelligent sensing and evaluating system and the platform screen door intelligent sensing and evaluating method, complex wiring of an operation and maintenance data transmission network can be reduced, and the data transmission links are simplified; moreover, the wireless communication module carries out the jump transmission of the operation and maintenance data through selecting the corresponding data transmission links, thereby avoiding the interruption of the operation and maintenance data transmission caused by the fault or congestion of the data transmission link, and guaranteeing the stability and real-time performance of the data transmission network.

The invention discloses a hopper sand collecting type railway track sand-removing vehicle, belonging to the technical field of railway track maintenance equipment, which comprises a power device, a traveling device and a sand removing device arranged on a chassis. The traveling device comprises two or more groups of traveling wheels matched with the track. The sand removing device comprises a sandcollecting mechanism for removing the accumulated sand inside and outside the track, and a sand removing mechanism for discharging the sand cleaned by the sand collecting mechanism to the outside ofthe train frame, wherein the sand collecting mechanism is arranged at the front end of the chassis; The traveling device, sand collecting mechanism and sand flushing mechanism are all driven by the power device. Driving the traveling device to walk along the track by the power device, removing the sand deposit inside and outside the track by the sand collecting mechanism and transporting the sandto the sand discharging mechanism during the traveling process, and discharging the sand to the outside of the track by the sand discharging mechanism, so as to ensure the traffic safety and avoid theoccurrence of the railway stoppage accident caused by the sand deposit on both sides of the track; At that same time, the a hopper sand collecting type railway track sand-removing vehicle has high automation degree, can greatly reduce the labor intensity of the staff, and can improve the sand cleaning work efficiency.

The continuous production process of high purity trimellitic anhydride with trimellitic acid includes the following steps: smelting trimellitic acid and eliminating acetic acid and water in the first kettle, and eliminating water inside trimellitic acid molecule in the second kettle to form trimellitic anhydride; eliminating heavy components in crude trimellitic anhydride product in one heavy component eliminating evaporator; eliminating light components in the evaporator of one light component eliminating tower; and rectifying through condensing trimellitic anhydride in the condenser on the top of the light component eliminating tower to obtain trimellitic anhydride product fed to the product tank. The present invention has stable product quality, high product purity, high product yield, low power consumption and other advantages.

The invention discloses a tester for a battery pack production process, and belongs to the field of battery packs. The tester comprises a rack, a first conveyor belt is fixedly connected to the top of the rack, a control module is arranged in the inner wall of the rack, a second conveyor belt is arranged at one end of the first conveyor belt, the second conveyor belt penetrates through the input end of the second conveyor belt and is electrically connected with the output end of the control module, and a crack detection mechanism is fixedly mounted at the top of the second conveyor belt. According to the tester, it is not required to set a plurality of procedures or transfer battery packs, the labor cost is reduced, the battery pack detection efficiency is increased, and the problems that the battery pack is mostly detected manually via a plurality of working procedures in a present testing device, the labor cost is high due to the plurality of working procedures, the test efficiency of the battery pack is reduced due to the fact that the battery pack is transferred among the working procedures, and a test result of the battery pack is influenced due to possible collision damage during transfer are solved.

The invention relates to a system switching method and device, electronic equipment and a computer readable storage medium, and when the electronic equipment runs a second operating system, the secondoperating system can independently support a first Bluetooth service. When the electronic equipment operates the first operating system, the first operating system needs to indirectly communicate with the Bluetooth module through the second operating system. Namely, when the electronic equipment operates the first operating system, the first operating system and the second operating system support the first Bluetooth service together. Therefore, in the process that the electronic equipment responds to the first instruction and is switched from running the second operating system to running the first operating system, the second processor running the second operating system is always in communication connection with the Bluetooth module, and communication interruption is avoided. Therefore, the situation that the Bluetooth service is completely interrupted during system switching is avoided.

When the neighbor device tests and finds that the conversation with restart device is broken, the reconnect timer (RT) is started. When the neighbor device tests and finds that it is under the Operational state and RT is not overtime, RT is shut and a recovery timer is started. The neighbor device and the restarting device begin to recover the transferring items, used for keeping the flux. This invention prevents the flux from interrupting in the GR process. It also avoids the concurrence of several Recovery timers. All this raises the GR effectivity.

The invention discloses a multi-cell cooperation rapid handoff switching method based on switching invitation, and the method sends switching invitation and switching state information sharing mechanism to a mobile terminal in a quasi-periodic manner through multi-cell cooperation, irons out the defects of a conventional backward handoff switching method, and enables the handoff switching of the mobile terminal to be more rapid, efficient and reliable. The method also employs a sliding window ordered transmission mechanism in a variable size, effectively avoiding pingpong switching, and can achieve seamless switching. Meanwhile, the method can provide a cooperative diversity gain for the mobile terminal at a cell edge, can overcome mutual interference among cells, and reduces the possibility of communication interruption caused by the building failure of a new link in switching. The method can be widely used in a wireless communication environment where a mobile line is more ordered, is relatively fixed and is higher in moving speed, such as an urban BRT line, a motorway, and a high-speed railway.

Disclosed are a polymerization inhibitor of 1,3-butadiene comprising alkylphenol based anti- fouling agent containing one to two hydroxyl groups, amine based anti-fouling agent and organic solvent and a method of inhibiting polymerization of 1,3-butadiene by using the above inhibitor. The polymerization inhibitor and the method of inhibiting polymerization of 1,3-butadiene of the present invention with excellent inhibition of polymerization and prevention of fouling make it possible to extract and distill 1,3-butadiene product with high purity by inhibiting poly not merization of 1,3-butadiene in a wide range of temperature from liquid phase to gaseous phase, prevent operational stoppage of a factory for manufacturing 1,3-butadiene in emergency possible to occur due to fouling, and to ensure stable operation thereof for a long term.

The invention discloses a tobacco shred material flow control device and a tobacco shred material flow control method. The tobacco shred material flow control device comprises a bijection optical grating, a main control device and a belt weigher control device, wherein the main control device is respectively and electrically connected with the bijection optical grating and the belt weigher control device, the inner wall of a tobacco shred feeding machine storage bin is provided with the bijection optical grating which is used for detecting the material positions of tobacco shreds in the tobacco shred feeding machine storage bin and sending material position signals to the main control device, the main control device sends a control signal to the belt weigher control device, and the belt weigher control device controls the tobacco shred conveying flow. The tobacco shred material flow control device and the tobacco shred material flow control method can be used for adjusting the tobacco shred flow of a belt weigher according to the material positions detected by the bijection optical grating, so that the feeding machine storage bin can be kept in a stable material position under the condition of ensuring the relatively stable perfuming flow, accordingly the condition that materials are broken is effectively avoided, and the continuity of production is ensured.

The invention discloses a commodity sales management system. The commodity sales management system comprises a store and commodity management module, an order management module, a member management module and a report form statistics module. The store and commodity management module comprises a store management submodule and a commodity management submodule. The order management module comprises an order list submodule. The member management module comprises a member list submodule. The invention further provides a commodity sales management method. The commodity sales management system and method have the advantages that the working mode of a supermarket can be changed, the sales dynamic states of all commodities can be accurately grasped, the commodities are prevented from being lacked or excessively stored, the sales speed and service level are effectively improved, the credibility and satisfaction of customers to the supermarket are improved, and the customer relation is improved.

The invention relates to a power equipment monitoring system, in particular to an intelligent cloud monitoring system of a lightning arrester. The system comprises intelligent cloud sensors of the lightning arrester, an intelligent cloud monitoring device of the lightning arrester and an intelligent cloud monitoring platform of the lightning arrester; the intelligent cloud sensors of the lightningarrester are linked with the intelligent cloud monitoring device of the lightning arrester through a wireless network; the intelligent cloud sensors of the lightning arrester are arranged on all phases of buses of transformer substations and transmit real-time data to the intelligent cloud monitoring device of the lightning arrester through the wireless network. The system can not only display all pieces of data and curves of the lightning arrester in real time but also conduct cloud diagnosis, intelligent judgment and expert analysis on collected big data, maintenance personnel can understand the physical conditions of the lightning arrester conveniently, and power equipment is endowed with new capabilities and vitality, so that a power grid is stronger and more intelligent.