77results about How to "Reduce communication links" patented technology

A method for maintaining the states of a receiver during the silent line state of a network device operating in a low power link suspend mode is presented. Accordingly, a method of freezing the states of the equalizer and keeping the receiver clock locked to a frequency that is approximately equal to that of the input data while providing for rapid adjustment to the phase and thus recovery of the input data is presented. During Silent Line State (SLS), the receiver states are frozen using methods that avoid parasitic decay. Also, the receive clock phase lock loop is locked onto the local transmit clock since the local transmit clock has a frequency approximating the incoming data frequency. During the SLS, the transmitter of the remote network device may have been turned off to conserve power therefore the receiver has no way of immediately knowing the phase of an incoming data. Thus, in order to prevent loss of data, the receiver loops of the receiving network device are trained to the frequency of the transmitting remote network device using periodic Link Suspend packets. Thus, in most cases, only the phase of the incoming signal need be acquired when data arrives. The phase may be quickly acquired using loop bandwidth shift methods whereby the receive clock phase lock loop bandwidth is increased to a value that aids rapid acquisition of the input clock and then, after acquisition, the bandwidth is shifted to a low value to enhance noise rejection during tracking.

The present invention is directed to a system and method for a plasma cutting system including a plasma cutting power source and a plasma torch operationally connected to the plasma cutting power source. A processing unit is disposed within the plasma torch and is configured to control the plasma cutting power source during a plasma cutting process based on operational feedback gathered of the plasma cutting process.

The invention relates to a method for monitoring a communication service. The method for monitoring the communication service comprises the following steps of: setting a service monitoring platform to realize human-computer interaction and data management in a way of abiding by an internet inter-orb protocol (IIOP) with a monitoring agent module; setting at least one monitored computer, wherein each monitored computer is provided with a monitoring agent module which is responsible for acquiring data form a monitored module, transmitting a command to the monitored module and controlling the starting or opening of the monitored module; and setting at least one monitored module to correspond to each monitoring agent module to realize specific services, acquiring monitoring data, executing a control command and organizing the display of a data model, wherein each monitored module is provided with interface description information and a data element model which are used for monitoring business services.

The invention discloses a tourism system managing method, electronic equipment and a storage medium. The tourism system managing method comprises the steps that a data insert instruction of first equipment is obtained and comprises a user logo and tourism data information of the user logo; and the tourism data information is recorded in a new block of a block chain. According to the tourism systemmanaging method, the electronic equipment and the storage medium, the tourism data information is recorded in the new block of the block chain, a distributing-type tourism information data sharing account book is formed, thus the comprehensive tourism data information is obtained by a tourist, the tourism scheme is intelligently inquired and customized in a personalized mode, the tourism consumption process is transparent, meanwhile the communication link is reduced, and the time is saved.

The invention discloses a white balance automatic adjustment system for a color TV set and a method thereof, belonging to the field of system debug of the color TV set, and solving the problem that the white balance of the color TV set is adjusted with low efficiency and high cost. The system comprises a white balance measuring apparatus and the color TV set to be measured, wherein the white balance measuring apparatus is connected with a radio-frequency head of the color TV set to be measured through a cable, and a high-brightness probe and a low-brightness probe of the white balance measuring apparatus are respectively positioned in a high-brightness display area and a low-brightness display area outside a kinescope of the color TV to be measured; and the white balance measuring apparatus is connected with a microprocessor of the color TV to be measured through a communication interface. The method comprises the following steps: a measuring standard for the white balance is set; the white balance measuring apparatus sends a television signal used for the measurement of the white balance to the radio-frequency head of the color TV set to be measured; the high-brightness probe and the low-brightness probe capture white balance measured data; the microprocessor of the color TV set to be measured receives the measured data through the communication interference; and the microprocessor of the color TV set to be measured performs the white balance adjustment according to the measured data and the set measuring standard. The invention is suitable for the white balance adjustment for the color TV set.

The invention provides a method for initializing a link suspend device for optimum receive recovery. A method for negotiating link parameters to facilitate rapid recovery of the input data from a silent line state is described. The invention can be applied to network devices in point-to-point data communications links capable of operating in a low power link suspend mode.

Apparatus for and method of transmitting an optical signal by a Free Space Optical, FSO, communication system, the method comprising: transmitting, by an optical signal transmitter (104), an optical signal (700) into at least part of a volume of an optical medium (302); and controlling, by a controller, the optical signal transmitter (104), to scan the at least part of the volume (302) using the optical signal (700) in a sequence of non-overlapping loops (704, 708). The sequence of non-overlapping loops (704, 708) may be a sequence of non-overlapping, concentric circular loops.

The invention provides a quick frequency response control method and device for a new energy power generation unit. The active power of the new energy power generation unit is determined through a boxtransformer measuring and control device; the determined active power distribution value is sent to a photovoltaic inverter or a draught fan converter through the box transformer measuring and control device; the photovoltaic inverter or the draught fan converter generates power according to the active power distribution value, and not only are the workload and cost reduced, but also the frequency response time of the new energy power generation unit in a new energy station is shortened; the active power of a photovoltaic power station can be quickly controlled, the response time is within five seconds, and a step of direct communication between a controller and the inverter is omitted; signals of voltage, current, power, frequency and the like, originally collected by the box transformermeasuring and control device, of a transformer can be utilized for direct quick frequency response control, hardware equipment does not need to be additionally arranged, quick communication control is ensured, and the cost can be effectively reduced.

The invention discloses a single-phase earth fault selection method of a DC (Direct Current) transmission line. The method comprises the following sequential steps: electrifying a relay protection device; assigning traveling wave protection constant values [delta] 1 and [delta] 2; measuring a grounding electrode circuit voltage UdN at a protection and installation side; calculating an average value of the grounding electrode voltage to be UdN-AVG; judging whether the formula that the UdN-AVG is more than [delta]1 or 1 -UdN-AVG is more than [delta] 1 is met; entering a next step if the formula is met, and repeating the step if the formula is not met; measuring the voltage one-way change time TUdn of the grounding electrode; judging whether a formula that TUdN is more than [delta] 2 is met; if the formula that TUdN is more than [delta] 2 and UdN-AVG is more than [delta] 1, a fault electrode is a cathode; if the formula that the TUdN is more than [delta] 2 and the -UdN-AVG is more than [delta] 1, the fault electrode is an anode; if the formula is not met, the fault electrode is a transient disturbance. The method provided by the invention is fast and reliable in action without a convertor station or a communication between the cathode and anode wires, and is capable of ensuring higher transition resistance when single electrode depressurization is operated.

The invention discloses an overvoltage protection configuration system of a unified power flow controller. The system comprises a direct-current overvoltage protection device, a valve overvoltage protection device and a sub-module overvoltage protection device. The relation of protection action constant values can be expressed by a relational expression that (N*Vov2)>(N*Vov1)>Uov1>...>Uovm>Unom. The cooperative relation of protection action delay can be expressed by a relational expression that Tvo2<Tvo1<Tuo1...<Tuom. Lightning arresters and by-pass switches which are in bridge joint are configured at two ends of the circuit-side winding of a series transformer; grounding lightning arresters are respectively configured at the near bus-bar end and near circuit end of the circuit-side winding of the series transformer; grounding lightning arresters are configured at the alternating-current power grid side and converter side of a parallel transformer; and grounding lightning arresters areconfigured at the alternating current-direct current side and valve bottom of a converter. With the overvoltage protection configuration system of the invention adopted, the converter can act reliably when the system is disturbed or the sub-modules of the converter fail, and therefore, the reliability of the unified power flow controller can be improved.

The application discloses a wireless sensor management method and device, and a communication system. The communication system comprises a site management unit, a management node, and a wireless sensor; the wireless sensor sends a connection request to a management node in an awakening state; the management node queries whether a first message is cached at local in advance; the first message is the message of the site management unit received by the management node when the wireless sensor is in a dormancy state; the management node sends a response to the wireless sensor according to a queryresult; the response carries the first message when the query result is that the first message is cached at the local in advance; the response indicates that the first message is not cached in the management node when the query result is that the first message is not cached at the local in advance, and the wireless sensor quickly switches to the dormancy state from the awakening state after receiving the response. By implementing the management method disclosed by the application, the battery life of the wireless sensor can be prolonged, and the demand that the wireless sensor is applied to anaccess side site in scale is satisfied.

The invention provides an intelligent access control system. The intelligent access control system comprises a core controller, a mobile data transceiving terminal, a householder verification terminal, a cloud server and an intelligent network door lock, wherein the mobile data transceiving terminal, the householder verification terminal, the cloud server and the intelligent network door lock are connected with the core controller; the mobile data transceiving terminal is used for sending a visitor request, receiving a verification two-dimension code issued by the householder verification terminal, acquiring a first verification sequence number issued by the cloud server by recognizing a preset two-dimension code and inputting a second verification sequence number to the cloud server after the verification two-dimension code is recognized; the householder verification terminal is used for issuing the verification two-dimension code; the cloud server is used for issuing the first verification sequence number, receiving the second verification sequence number and detecting the matching condition of the first verification sequence number and the second verification sequence number; the core controller is used for realizing data interaction and sending corresponding instructions to unlock and lock the intelligent network door lock according to a matching result detected by the cloud server. The intelligent access control system is convenient to use and relatively high in safety; furthermore, the over-high dependence on electronic equipment is reduced, and the after-sale maintenance cost is lowered.

The invention discloses an air conditioner wireless controller, an air conditioner, and an after-sales service providing method and system of the air conditioner. The air conditioner comprises an air conditioner electric controller; the air conditioner electric controller comprises a near communication part, a remote communication part, and a control part connected with both the near communication part and the remote communication part; the near communication part receives photos or videos related to the air conditioner; the remote communication part is connected with the server and transmits the photos or videos to the server according to a command from the control part. The air conditioner according to the embodiments has the advantages that the photos or videos related to the air conditioner are transmitted to the server and more visually reflect the state of the air conditioner, users need not describe problems of the air conditioner to customer service staff, communication steps are fewer, the customer service staff can master the problems that users reflect so as to further provide high-quality services, and user experience is better.

The invention discloses a public community charging pile data concentrator with a dual-network complementary function and an application method of the data concentrator. The data concentrator comprises a main control board, an LED (light-emitting diode) display screen, an uplink communication module, a downlink communication module, a storage module, an intelligent electric meter, a keyboard, an entry and exit processing module, an LED indication lamp and an equipment maintenance port, wherein the LED display screen, the uplink communication module, the downlink communication module, the storage module, the intelligent electric meter, the keyboard, the entry and exit processing module, the LED indication lamp and the equipment maintenance port are respectively connected with the main control board. The data concentrator communicates with charging piles in a community by a micro-power wireless module, so that the communication fee of each charging pile is saved, the communication cost of a whole electric vehicle operation network is reduced, communication links capable of directly accessing into a background of an electric vehicle operation management system are reduced, and the running speed of the background of the system is increased.

The embodiment of the invention provides a method for analyzing a post-station cross foldback capability, which comprises the following steps of: acquiring key points in the post-station cross foldback process of a train on a track; and under the control of a vehicle-to-vehicle communication control system, acquiring the driving time lengths between key points when foldback vehicles respectively execute post-station cross foldback according to a preset driving sequence, generating a driving time sequence diagram of each foldback vehicle according to the driving time lengths between the key points, acquiring a foldback interval formula group according to the driving time sequence diagram, according to the foldback interval formula group, obtaining the analysis result, the vehicle-to-vehiclecommunication system is adopted to independently control switch resources, communication links are reduced, accurate vehicle tracking is achieved, the post-staion cross foldback time interval is shorter than that of a CBTC system, stronger post-station cross foldback capacity is provided, decision support for the planning and designing of a newly-built line is achieved, the design of a station shape and the matching of lines can be guided, and the requirement of adjusting the operation along with the change of the a passenger flow volume is satisfied.

The invention provides a traffic violation real-time warning system, which can be used for accurately and timely informing traffic violation information to a traffic law violator in real time and achieving a warning deterrence effect so as to reduce the occurrence of the road traffic violation behavior and to improve the road traffic safety. Meanwhile, the invention also discloses a warning methodbased on the traffic violation real-time warning system. The system comprises a traffic violation snapshot system, a road side unit, a traffic violation warning screen and a vehicle-mounted terminal.Data communication is performed among the traffic violation snapshot system, the road side unit, the traffic violation warning screen and the vehicle-mounted terminal trough a wireless communicationmodule. The traffic violation snapshot system is used for catching the traffic violation behavior of vehicles at the crossing; the road side unit performs comparison analysis after receiving the information of a law violation vehicle, and pushing the compared violation information to the traffic violation warning screen; and the road side unit pushes the compared violation information to the vehicle-mounted terminal to be displayed when pushing the compared violation information to the traffic violation warning screen.

The invention discloses charging piles for wireless carrier dual-network complementation of public communities and the application method thereof. The charging piles comprise main control boards, opening-in and opening-out processing modules, measurement processing modules, printing modules, intelligent electric meters, keyboards, CAN data interfaces, intelligent card reading-writing modules, cameras, LED display screens and communication modules. The application method solves the problem that the large scale of charging piles are accessed in an electric vehicle background in the public communities. Through the application method, the data interaction can be implemented between the charging piles and the electric vehicle background through two free communication methods of radios and carriers, so that the expensive communication cost is reduced, and the influence to the communication quality from peripheral interference sources or other same-frequency-band wireless signals is effectively avoided.

The invention discloses a suspension type multi-operation arm system. The operation arm system is composed of a suspension positioning arm and light-loading operation arms, the two light-loading operation arms are fixed at the tail end of the suspension positioning arm, the suspension positioning arm can lift, push, pull and rotate the whole tail end; surgical instruments are fixed at the tail ends of the light-loading operation arms to locate the posture and position of the surgical instruments. The suspension positioning arm can deploy the surgical instruments on a large scale to avoid interference with other instruments in an operating room. The suspension type multi-operation arm system has the advantages that the positioning for multiple surgical tools and surgical instruments can beachieved, the large-scale placement of the surgical instruments can avoid the interference with other instruments; the operation arms position positioning the surgical instruments can reduce the laborintensity of doctors, the doctors cannot feel fatigued after operating for a long time, the communication links of attending doctors and assist doctors are reduced, and the operation efficiency can be improved.

The invention relates to a data integration method of an intelligent industrial control network based on mirror port parsing. The method comprises the following steps: after realizing a capture function of a mirror port by configuring a mirror function for a switch, reading data; creating a connection, aggregating the captured data to the connection, and taking a TCP state machine or timeout 300S as a timeout flag of the connection; determining a connected client and a server; comparing characteristic values of protocol headers and determining the protocol categories; selecting different protocol parsing algorithms according to a protocol function code; and performing data display and data storage. The data integration method of the intelligent industrial control network based on the mirror port parsing provided by the invention has the following beneficial effects: the method collects the data from a network layer to avoid the attack of a host computer; real-time data of a plurality of PLCs can be collected synchronously, and the data can efficiently enter a same data platform; and besides, the existing method of collecting different PLC data through different host computers and sending the PLC data out is replaced, so that the communication links are reduced and a highly feasible new means is provided for the basic collection part of factory big data.

The invention relates to the field of big data industrialization, and in particular to an intelligent control hanging system based on the Internet of Things technology, comprising an intelligent hanging production system and a production information management system; the intelligent hanging production system is used for assisting high-efficiency industrial production and recording real-time production data based on a transportation device and an identification device; the production information management system includes a first data server, a first backup server and a management terminal display device; the production information management system communicated with the intelligent hanging production system, and is used for the whole process monitoring and tracking of the intelligent hanging production system to obtain real-time production data, performing calculation and analysis to obtain the analysis result and displaying the analysis result on the management terminal display device to assist the production management. The system combines the Internet of Things in the intelligent industrial assembly line mode, facilitates unified scheduling, optimizes resources, matches big data, optimizes production capacity and resources, reduces costs, and maximizes revenue.

The invention discloses a direct hanging type energy storage converter redundancy control system based on port voltage state judgment, which comprises a central processing unit and a coprocessor, each phase comprises a phase switch (1) and a plurality of sub-modules (2), the sub-modules (2) are connected to a circuit through a bypass switch S, each sub-module (2) comprises a power module and a battery pack, and the power modules are connected to the central processing unit. The power module comprises an H-bridge bypass switch, a pre-charging switch group (4), a capacitor C, a first inductor L1 and a second inductor L2; the battery pack comprises a battery resistor R0 and a battery; when a plurality of power modules or battery packs of the medium-voltage direct-hanging type energy storage system break down, judgment and positioning of a fault state and bypass of a fault chain link are rapidly completed, seamless switching between a healthy operation state and a redundant operation state is achieved at the same time, power shortage caused by short-time shutdown of the system is avoided, and the service life of the system is prolonged. And loss caused by shutdown of the system due to faults of part of chain links is reduced.

The invention discloses an upgrading method of an electric energy meter. According to the upgrading method, the preset upgrading moment is included in the upgrading initialization instruction and is sent to the to-be-upgraded electric energy meter together with the upgrading initialization instruction; and the original two links of controlling the electric energy meter to be upgraded and initialized and sending the preset upgrading moment are fused together, so that one communication link is omitted, and the possibility of communication failure in the whole upgrading process is directly reduced through reduction of the communication link, and then time is saved, and the upgrading efficiency is improved. The invention further discloses an upgrading device of an electric energy meter and a concentrator. The upgrading device of an electric energy meter and the concentrator have the same beneficial effects as the upgrading method of an electric energy meter.

The invention belongs to the technical field of D2D communication. The invention discloses a D2D-based electronic credential security transfer method and system, and an electronic credential system. User equipment 1 (UE1) is connected with an electronic credential server (SERVER) through a communication network, and the user equipment 1 (UE1) is connected with user equipment 2 (UE2) through a D2Dchannel. The electronic credential server is provided with a certificate issuing module (CA), an authentication module (AS) and a data storage module (DB), and the user equipment is provided with a login module, a data transmission module and a D2D module. The same user owns more than one device, and one existing device (UE1) completes authentication and data transmission with an electronic credential server. Other equipment does not need to establish network connection with the electronic credential server again, and the transfer of the bill state is completed by establishing a D2D channel with the UE1. The electronic credential transfer system is reasonable in structure, communication resources of the electronic credential server can be saved, user operation is simplified, and credentialtransfer time is shortened.

The invention relates to the field of internet of things of an elevator, and discloses a link maintaining method and a gateway in the internet of things of the elevator. When no data are transmitted in a network for a long time, a connecting link without data interaction can be kept connected, long connection of the link in the network is maintained and the network is kept alive. The method includes the steps that registration packets are sent to a server; if feedback information, sent by the server, of the received registration packets is received, heartbeat packets are sent to the server periodically so that the link can be maintained, wherein the sending period is T1, and T1 is a number larger than 0; if data sent by the server are received or data sent by all nodes in a local area network are received within T1, the heartbeat packets are stopped to be sent. The method is used for link maintaining between access network equipment and the server in the internet of things of the elevator.

The invention discloses a wireless charging method. The wireless charging method comprises the following steps that registering and connecting of a wireless communication channel is carried out between a vehicle-mounted battery management system and a wireless charging ground end; after the registration and connection of the wireless communication channel are completed, charging handshaking, charging parameter matching and charging process management are carried out between the wireless communication channel and the wireless charging ground end; and according to the matched charging parameters, a high-frequency alternating current output by a receiving coil is rectified, and a direct current is output to charge a battery. Wireless communication is directly carried out between the vehicle-mounted battery management system and the wireless charging ground end, the wireless charging process is controlled, a communication link between a wireless charging vehicle-mounted end and the vehicle-mounted battery management system is omitted, a primary communication link is reduced, and the real-time performance and reliability of wireless charging are improved. The invention further disclosesthe vehicle-mounted battery management system, an electric vehicle, a wireless charging system and a computer readable storage medium, and the vehicle-mounted battery management system, the electricvehicle, the wireless charging system and the computer readable storage medium have the technical effects.

The invention provides a reservation system and a reservation method of drivers in a small department. The reservation system comprises a processing device and a plurality of terminal devices, wherein the processing device comprises an information database, an information inquiry unit, an information output unit and a reservation message determining unit, wherein the information database is used for storing the driver state information within a predetermined time period; the information inquiry unit is used for receiving an inquiry instruction input from user by the terminal devices; the information output unit is used for transferring the driver state information from the information database according to the inquiry instruction, and outputting the driver state information to the terminal devices to be displayed; and the reservation message determining unit is used for receiving and determining the reservation message input from user by the terminal devices. With the adoption of the reservation system and the reservation method of the drivers in the small department, the user inputs the inquiry instruction by the terminal devices, the driver state information is output by the processing device in response to the inquiry instruction, and then the user inputs the reservation message according to the driver state information and then determines, so that the efficient and reasonable configuration of the driver and the user is realized, the configuration efficiency is enhanced, the configuration cost is saved, and the conflict between a management department and users is avoided effectively.

The invention relates to a device for controlling and managing the voice coding / decoding chip of user board, wherein it comprises: microprocessor on main control board; serial bus interface on the chip; microprocessor has serial bus interface connected to the serial bus interface of voice coding / decoding chip, to control and manage the chip. The invention uses the A / D bus of microprocessor or high-property serial bus interface to control and manage the CODEC chip, to avoid CPU on user board. And the user board can avoid microprocessor, and the communication circuit between microprocessor and main control board, to reduce cost, and improve manage efficiency.

The invention relates to the field of computer software application, and provides a method for controlling restricted access of a PDF file. According to the method, a network client side, a network server side and a permission control module for distributing a plurality of different permissions are involved; in the network client side, the PDF file which needs permission setting is uploaded to thenetwork server side for permission setting; then the network client side obtains the PDF file after the completion of permission setting, wherein the network client side comprises a browser used forfile control personnel to obtain PDF files; the permission control module receives the PDF file after the completion of permission setting and then distributes different permissions to different access addresses of the browser, wherein the PDF file is sent from the network server side. According to the method for controlling the restricted access of the PDF file, different permissions are distributed through the permission control module, and a series of problems are solved that the previous efficiency of sending PDF files is low, different types of user permissions are difficult to control, and version errors easily occur.

The invention discloses a communication tool special for transformer substation scheduling information acceptance. The communication tool comprises a telephone, one end of an audio wire and a telephone wire are connected with the telephone respectively, the other end of the audio wire is connected with earphones, the earphones are provided with a microphone, the telephone wire is provided with a rotating shaft, a fixed block is arranged on the rotating shaft, the telephone wire wraps around the rotating shaft and the fixed block, two sides of the rotating shaft are provided with a first shell body and a second shell body respectively, the first shell body is provided with a power spring, one end of the power spring is connected with the inner wall of the first shell body, and the other end of the power spring is connected with the rotating shaft. According to the communication tool, a protection room executive enters into the protection room with the telephone, the telephone is connected with background through the telephone wire, the telephone is provided with the microphone, therefore, the protection room executive can check signal with background acceptance personnel directly through the telephone and the microphone, two communication steps of an outdoor conveyor are reduced, the original three-people operation changes to two-people operation, time is saved, and communication mistakes are avoided.