796results about How to "Avoid paralysis" patented technology

The invention discloses a data verification method based on block chains and a data verification system thereof. The data verification method comprises the steps that the sensing data of the environment and/or household equipment state are acquired through multiple wireless sensor nodes of a wireless sensor network and processed and then uploaded to a data repeater; the data repeater receives the processed sensing data and then forwards the sensing data to a data verification network; multiple data verification nodes in the data verification network are responsible for verifying and saving the sensing data; and all the data verification nodes are block chain nodes, and multiple data verification nodes form a distributed database. The data verification task is completed by using the data verification nodes, and the verification work is distributed to the verification nodes from the data repeater so that the problems of being low in verification efficiency, low in speed, high in transmission delay and vulnerable because of the excessively centralized verification task can be overcome, and the nodes are excited to actively authenticate the data and rapidly complete the verification task so that the whole verification system is not influenced by single node failure of any node.

The invention discloses a whole-process monitoring and tracing system and method for the quality safety of agricultural products. The system comprises a cloud server which is connected with a client inquiry system, an agricultural product information acquisition pool and a monitoring system; the client inquiry system comprises a switch, a firewall, Internet, an authority authentication server and inquiry clients which are connected successively, wherein both-way communication is performed between the switch and the cloud server; and the agricultural product information acquisition pool comprises a forbidden pesticide inputting system, a basic information importing system, a water quality testing device, temperature and humidity sensors, a soil detection device, cameras, an air detection device, a pesticide detection device and a fertilizer detection device which are connected with the cloud server. The whole-process monitoring and tracing system and method have the advantages that the whole production process of agricultural products can be traced, and consumers can inquire about basic information of agricultural products through terminals.

The invention discloses a decentralized federated learning method under privacy protection. The decentralized federated learning method comprises a system initialization step, a request model and local parallel training step, a model parameter encryption and model sending step, a model receiving and recovering step and a system updating step. Decentralization is achieved by using a strategy of randomly selecting participants as parameter aggregators, and the defects that existing federated learning is easily attacked by DoS, a parameter server has a single point of failure and the like are overcome; a PVSS verifiable secret distribution protocol is combined to protect participant model parameters from model inversion attacks and data member reasoning attacks. Meanwhile, it is guaranteed that parameter aggregation is carried out by different participants in each training task, when an untrusted aggregator occurs or the aggregator is attacked, the aggregator can recover to be normal by itself, and the robustness of federated learning is improved; while the functions are achieved, the federated learning performance is guaranteed, the safety training environment of federated learning is effectively improved, and wide application prospects are achieved.

The invention relates to an indoor environment safety intelligence control system which comprises an indoor environment detection apparatus which is connected with an input terminal of a center processor. An output terminal of the center processor is connected with an indoor environment adjusting device. The center processor is connected with a lighting device, a camera and a hard disk video recorder. When an indoor environment parameter detected by the indoor environment detection apparatus is not corresponding to a preset indoor environment parameter, the center processor adjusts an indoor environment through the indoor environment adjusting device. Simultaneously, the center processor starts the lighting device, the camera and the hard disk video recorder. The center processor can transmit video information in the hard disk video recorder and the indoor environment parameter detected by the indoor environment detection apparatus to a control center through a system communication module which employs a DL/T860 standard communication protocol. The invention has the advantages of compact structure, convenient usage, a high automation degree, good adaptability and capability of raising security and reliability of enclosed space.

The invention discloses an internet of things across-machine room distributed type full automatic hot standby server switching system which comprises N servers. All servers are electrically connected through each intelligent node in the internet and the internet of things. A priority level is set in the N servers, and a master server and standby servers are determined according to the priority level. Updated data in a data bank of the master server is transmitted to the standby servers by the master server at a fixed time. Heartbeat packages are mutually sent among the N servers, so that each server can know current states of other servers. When the master server is broken down, an online server with the highest priority is automatically switched as a new master server according to the priority level. The intelligent node in the internet of the things automatically chooses and connects with the server which has the highest priority level to transmit data. Therefore, the purposes of automatically switching the servers, safe and saving cost are achieved.

The invention discloses a method for upgrading equipment, which is used for increasing the success rate of device upgrading. The method includes the following steps that: the version information of sender equipment is received; the version information of the sender equipment is compared with the local latest version information and on the condition that the version of the sender equipment is lower than the latest version, at least one file server storing with files of the latest version is searched; according to an upgrading strategy configured in advance, a file server in which the amount of the equipment carried is not up to a preset threshold value, is selected from at least one file server and the information of the file server selected and the latest version information are returned to the sender equipment so as to ensure that the sender equipment downloads the file of the latest version from the corresponding file server for updating according to the received information of the file server and the latest version information. The invention also discloses a method for updating equipment, a server, an upgrading device and a communication system.

A composite display method and system for a search engine of same resource information based on the degree of attention. The search engine finds all the target stations that correspond to some conditions as original results. The original results are combined to a title search result depending on the content, quality, and information of a user, etc. The title search result is displayed on the browser of the user as a search result, and can be expanded when being viewed. The system uses a statistic server and network browser, and all operations of user are converted into the degree of attention for the web pages. The grade value for the degree of attention is sent to the statistic server as the standard of arrangement for the presentation of content and quality. Another method capable of judging the status of the user automatically and providing the suitable web page is also disclosed.

The invention is a technology of an embedded P2P set-top box and an implementation method thereof. Through a quantum package packaging a server, and various files such as a consecutive transmission stream format (TS) and media, etc. are packed into a quantum TS stream media package (the quantum package), through the certification and the management of a P2P management system, all embedded P2P set-top boxes transmitting on the internet are matched and grouped. As the adjacent group of P2P network nodes, each P2P network node can download from other nodes and share one group of quantum package having the same sequence mark with other nodes, in the same time-stamp mark, the quantum package is restored to the consecutive stream media file through a decoder according to the consecutive marks, and the application of an equivalent node (P2P) technology in the set-top box is realized.

The invention discloses a method and device for dropping packets. In the embodiment of the invention, the current buffer drop precedence is obtained according to the size of the current free buffer space by detecting the size of the current free buffer space, and whether the precedence of the packets needing to be buffered is lower than or equal to the current buffer drop precedence is judged, if so, the packets are dropped. By implementing the embodiment of the invention, when the size of the current free buffer space is smaller, the precedence of the packets which can pass through the space is higher, thereby reducing the influence of partial queue congestion on the important packets with high precedence, avoiding short congestion buffering of partial links from influencing normal communications of other normal links to some extent and avoiding large-area network paralysis.

The invention requests a dual-link redundancy control method for protection of an Ethernet for plant automation (EPA) switch, wherein the invention relates to the industrial ethernet on-site control field. According to the invention, in the network, a dual-link loop network is formed between EPA switches by connection of two links that are redundant mutually; on the basis of analyses on the links, a strong link between the two links is selected as a working link and the other link is selected as a standby link; the network is trimmed as a loop-free topological structure; transmission of a token that is capable of being elected as main switch authority is carried out and main switch replacement is periodically carried out on the switches; meanwhile, state detection is carried out on the work link and the standby link as well as a plurality of link faults can be processed, so that reliability, stability and robustness of the network are improved.

The utility model relates to system for testing battery performance , which is designed to test charging and discharging performance of the battery of electronic equipment; wherein, the electronic equipment is provided with a charge-discharge operation program. The system comprises a controlling host machine and a power control equipment; wherein, the controlling host machine is used to produce a piece of configuration information which is to be transmitted through a first and second parallel transmission interfaces to the power control equipment, and the controlling host machine builds up a network connection with the electronic equipment connected with the power control equipment through network; the power control equipment comprises a plurality of connection ports, based on the control console to send configuration information production and the configuration information over the same test power supply, which covers the testing power output through a port to generate a plurality of test power supplies consistent with the configuration information. The test power supplies are respectively output to the electronic equipment through the connecting interfaces for charge-discharge tests. At the same time the controlling host machine sends the test operation orders to the electronic equipment through network, so as to enable the electronic equipment to implement charge-discharge operational procedures and conduct charge-discharge test on the battery.

The invention relates to a method for detecting the unknown abnormal behaviors of a website, and the method comprises the steps: obtaining original website information, carrying out the preprocessing and learning, and completing a directed graph and a webpage in-degree table of the website; detecting the access abnormal data of a single page; giving an alarm if the abnormality is detected, and adding one to the number of alarm times; detecting the access abnormality data of a key service; giving an alarm if the abnormality is detected, and adding one to the number of alarm times; detecting the access abnormality data of a single user; giving an alarm if the abnormality is detected, and adding one to the number of alarm times; counting the alarm times, and detecting the number of alarm times of a website HTTP protocol status code; giving an alarm to a website with the number of alarm times of the website HTTP protocol status code being greater than 20 in each half of an hour, carrying out the statistics of abnormal webpage URLs, and carrying out the sorting according to the number of access times; and carrying out the inspection. The method is used for detecting the security flaws of the website and various types of known threats, analyzing the unknown illegal connection and access, carrying out the early warning for a network problem, avoiding the paralysis of a user's network to the greatest extent, and facilitating the subsequent inspection, treatment and maintenance.

The invention discloses a communication method for multiple vehicles, vehicles and a server. The method comprises the following steps: selecting a first vehicle in the multiple vehicles as primary equipment in communication with the server, wherein the first vehicle communicates with other vehicles in the multiple vehicles through a first communication mode, and the primary equipment communicates with the server through a second communication mode; and using the first vehicle as at least one node in the other vehicles which is in communication with the server. According to one embodiment of the invention, the problem that when failures occur during direct communication between any vehicle in the other vehicles and the server, the failures cannot be reported is avoided; and besides, the server no longer needs to distribute update software one by one to each vehicle, and only needs to distribute the update software to the first vehicle and then the first vehicle forwards the update software to each vehicle, so that the number of operations of the server is reduced and less server resources are occupied.

The invention provides a realization method and device of an embedded system bootstrap program, and portable type electronic equipment. The method comprises the steps of carrying out foundation initialization to the embedded system environment; detecting whether boot parameters need to be updated; if so, acquiring new boot parameters from a boot parameter update interface and storing the new boot parameters into a boot parameter memory; carrying out initialization to hardware equipment according to the boot parameters; judging whether an object executable file needs to be loaded, if so, downloading the object executable file from a U disk; carrying out check and detection to the executable file which needs to be downloaded; and copying the executable file passing through the check and detection to the memory and executing the file, thus finishing the system bootstrap process. By configuring the boot parameters on site, the proposal of the invention leads the system to be capable of adapting to hardware equipment such as storage units, memories and the like of different types, and loads and runs the executable file after check and detection, thus avoiding the systemic breakdown caused by problems occurred in the executable file and improving the reliability of the system.

The invention relates to a solid and oil removal method and device for MTO (methanol to olefin)/MTP (methanol to propylene) chilled water and washed water. The method disclosed by the invention mainly comprises the following steps of carrying out ultrafiltration membrane separation on MTO/MTP chilled water, feeding an ultrafiltration membrane concentrated solution into a three-phase cyclone-separator separation system, and recovering a catalyst and oil; cooling ultrafiltration membrane permeated liquid, and feeding the obtained liquid back to a chilled water system to cyclically reuse; carrying out ultrafiltration membrane separation on MTO/MTP washed water, feeding an ultrafiltration membrane concentrated solution into the three-phase cyclone-separator separation system, and recovering a catalyst and oil; and cooling ultrafiltration membrane permeated liquid and feeding the obtained liquid back to a washed water system to cyclically reuse. The invention also provides a solid and oil removal device for MTO/MTP chilled water and washed water.

The invention discloses a smart home safe guard system. The smart home safe guard system comprises an alarm subsystem and multiple monitoring subsystems. The alarm subsystem comprises a ZigBee module I and a GPRS communication module, a display and an alerter which are connected with an output end of the ZigBee module I, each monitoring subsystem is internally provided with a monitoring sensor and a ZigBee module, and each monitoring subsystem is in communication connection with the ZigBee module I of the alarm subsystem through the corresponding ZigBee module in the corresponding system. According to the safe guard system, wireless automatic networking can be achieved, debugging and maintenance are easy, convenient and rapid, the cost performance is high, installation is easy, the space is saved, attractiveness is achieved, real-time monitoring of various home environments can be achieved, the good home environment is guaranteed, the stability of the system is high, and the situation of global paralysis caused by failure of a central control system can be effectively avoided.

A message queue-based request processing method includes: when a user request is received, packaging the user request into a corresponding message and sending the message to a first server; Accordingto the location identification number in the message, the message is stored in the message queue through the first server, and the message is synchronized to a plurality of second servers through thefirst server. Screening a second server whose current load is lower than a preset load threshold according to the current load of the plurality of second servers; A corresponding thread pool is established through the selected second server to process the message. The invention also provides a request processing device, a device and a storage medium based on a message queue. The invention is basedon the cloud transmission technology, by introducing the message queue in the first server and synchronously informing the second server to process the message by using the message queue, the servercan be separated from the database and the running efficiency of the system can be improved.

The invention discloses an authentication method for accessing wireless networks, which is applied to realizing that a terminal for controlling access can only be used in a certain control area in a wireless network. The authentication method comprises the steps that: an authentication server receives the authentication message of access request containing the media access control (MAC) address of a request access terminal and the MAC address of a wireless access point which is connected with the request access terminal from a wireless controller, acquires the MAC address of an authentication terminal according to the MAC address of the wireless access point, determines that when the MAC address of the authentication terminal contains the MAC address of the request access terminal, the received message of authentication is returned to the wireless controller. The invention discloses an authentication system for accessing wireless networks and an authentication server.

The invention discloses a highway toll collection system and connection signal intersection coordinated control system comprising a traffic state detection device, a ramp queuing length detection device, an exit toll station release control device, an entrance toll station release control device, a plane signal intersection control device, a road exit and entrance traffic flow induction device anda coordination controller. The traffic flow is regulated and controlled through the toll stations, the release rate of the exit and entrance toll station is regulated and controlled in real time according to the traffic state and the vehicle queuing length of the highway main lines, the exit and entrance ramps and the urban road of the area near the toll stations, and the signal timing plane forcoordinately controlling the connection signal intersection is also used in a cooperation way; besides, the traffic induction system is also used in an auxiliary way so that the vehicle is enabled tosmoothly enter or leave the highway, the problem of traffic congestion of the highway main lines, the exit and entrance ramps and the connection road segments of the toll stations and the signal intersection can be solved and the overall operation efficiency of the highway and urban road network is enabled to be optimal.

The invention discloses a digital substation process level data exchanging device. The core of the device is a configurable data exchanging module based on the FPGA. A simple and efficient data exchanging mode is achieved on the basis of IEC61850. The unique functions of SV message rated delaying automatic updating, GOOSE deflected message prior transmission, data storm rapid accurate restraint and the like are particularly achieved. The problems that the process level SV networking communication depends on GPS synchronization, the transmission and delay of the GOOSE are uncontrollable and even packet loss occurs under the mode that the SV and the GOOSE are combined in network, and the storm restraint time is over long are solved. The motion delay of tripping operation of the GOOSE is reduced. The digital substation process level data exchanging device is creative, practical and economical and capable of promoting the reform of a digital substation process level networking mode.