51results about How to "Isochronous transfer" patented technology

The invention relates to a structure intensity testing system based on an intelligent wireless sensor network, which comprises a monitoring terminal, an intensity testing sensor array arranged in a structure to be tested, a wireless sensor terminal node, a wireless routing node and a wireless base station node, wherein, the wireless sensor terminal node collects structure response output of the intensity testing sensor array under each loading grade, and transmits the structure response output by the wireless sensor network through the wireless routing node and the wireless base station node in sequence to the monitoring terminal. The invention also relates to a method for the system to carry out communication, data collection and visualization. The system and method of the invention overcomes the problems that the existing structure intensity testing systems have complex leads, big added weight, low intellectualization and networking degree, etc., can effectively reduce the number of the leads in a static force / fatigue testing system, improve testing precision and realize real-time and simultaneous collection, transmission, display and storage of the structural test data, and has the advantages of intellectualization, high efficiency and low cost.

The invention provides an autonomous positioning method and device based on inertial navigation data and used for a coal cutter. The method comprises the following steps: according to an inertia sensor mounted on the coal cutter, measuring in a carrier coordinate system, thus obtaining first positioning data of the coal cutter, wherein the first positioning data comprises a translational acceleration of the coal cutter in the carrier coordinate system and a rotational angular velocity of the coal cutter in the carrier coordinate system; performing integral calculation on the translation acceleration in the first positioning data by combining initial estimated values of a speed and a position of the coal cutter, thus obtaining second positioning data in a navigation coordinate system; constructing a first attitude matrix in the carrier coordinate system, and performing differentiation, thus obtaining a second attitude matrix in the navigation coordinate system; according to the second attitude matrix, performing an inverse operation, thus obtaining an attitude angle of the coal cutter in the navigation coordinate system; and according to the second positioning data and the attitude angle, determining the position of the coal cutter in the navigation coordinate system.

The invention discloses a method for lowering train energy consumption and improving route transportation capability, and belongs to the technical field of train communication and control. According to the method for lowering train energy consumption and improving route transportation capability, firstly, a multi-train operation control system affected by transmission packet loss is equivalent to a network control system; an area controller waits for receiving the state information of all the trains, and estimates the state of the train with the state information being not received, the train waits for receiving a mobile authorization command, and a novel mobile authorization command is estimated according to a previous mobile authorization command if the train does not receive the mobile authorization command. The train selects closed-loop gain according to the criterion of the minimum energy consumption or the minimum train interval, and a control command is calculated and executed by utilizing the state of the current train and the states of all the front trains or part of the trains. By means of the method for lowering train energy consumption and improving route transportation capability, unnecessary train traction and braking caused by transmission packet loss of train-ground information can be reduced, the train traction energy consumption is lowered, and riding comfort is improved. Meanwhile, the fluctuation of train intervals caused by the transmission packet loss can be reduced, the route transportation capability is improved, and the riding comfort for passengers is improved.

The invention discloses a 360-degree full-field-angle diffraction optical element, and the optical element comprises a substrate layer made by a dielectric material, and a plurality of nano-bricks, wherein the dielectric material of the substrate layer and the dielectric material of the nano-bricks are different. The sizes of the nano-bricks are the same, and the length and width of the nano-bricks are at the scale of sub-wavelength. The nano-bricks are disposed on the substrate layer at different rotating angles, thereby forming a unit structure. The optical element can achieve the 360-degree diffraction angle, and achieves the forward and backward synchronous transmission of a modulated optical field. The invention also discloses a design method for the optical element.

The invention discloses an intelligent transportation massive checkpoint passage data transmission system. The passage data transmission system comprises a client side and a server side, the client side collects records and pictures in a multithreading mode and transmits the records and the pictures to the server side, the server side receives the records and the pictures sent by the client side in the multithreading mode and uploads the records to an appointed database server, and the pictures are uploaded to a picture server. The passage data transmission system is compatible with various databases and various picture access modes and can timely and synchronously transmit passage records and passage pictures.

An e-mail system fused with a currency protocol comprises an e-mail client loaded with a remittance plug-in to provide an e-mail interface with a remittance identifier for a user; The remittance mailmanagement server is respectively interacted with the mail client, the e-mail management server and the fund management server; The remittance mail management server cooperates with the E-mail management server and the fund management server. the remittance mail management server receives a mail message sent by the mail client; and judging whether the mail message contains the remittance identifier, if yes, the remittance mail management server scheduling the E-mail management server to send the mail message and scheduling the fund management server to execute a remittance operation accordingto the remittance identifier, and if not, the remittance mail management server only scheduling the E-mail management server to send the mail message. And the same platform and cross-platform synchronous transmission of information and value are realized.

The invention discloses an ies500 automatic real-time data and information system transmission interface, which is characterized in that the transmission interface is provided with a double-link structure of a real-time data link and a file link, and the work content of the intranet for maintaining a data base can also be automatically and synchronously transmitted to the outer net at the same time of real-time data transmission of the intranet; an allopatric server is positioned in a soft bus on a dispatching workstation, and a modification triggering device is set in an intranet server; a historical data base synchronous module is arranged on a data server, and the synchronization of an inner historical data base and an outer historical data base of an isolation system is completed at the fixed time; a three-layer application system structure of a data base server, a web server and a browser is adopted; and the results of the in-side meter checking are written into marketing MIS through a web service interface. The invention mainly ensures the safe and stable operation capability of the dispatching automatic core system, can ensure the automatic synchronization of data inside and outside the isolation system to the largest degree, and can reduce the repeated work, so the invention ensures factuality, convenience and high reliability of the data recovery of the dispatching automatic system on the outer net.

The invention provides a synchronous transmission system, a method, a device and equipment, belonging to the technical field of the communication, wherein the method includes: when MBS conversation is initiated, a center dispatch transmission unit determines and transmits the transmission parameter of MBS data at the port, and the local dispatch transmission unit uses the transmission parameter to perform the port process on the MBS data; the center dispatch transmission determines the dispatch parameter of the MBS data, and the local dispatch transmission unit distributes the port bandwidth for the MBS data according to the transmission unit; the center dispatch transmission unit separates, codes the MBS data, and configurates the clock synchronization indication; the local dispatch transmission unit transmits the MBS data according to the code sequence processed by the port through the port bandwidth. The method realizes the dispatch synchronization, the data package time sequence synchronization and the transmission parameter synchronization under the MBS mode, thereby realizing the transmission synchronization of the MBS data.

The invention discloses a synchronization method and device for voxel data. The method comprises the steps that in a virtual reality scene, a first client obtains operation indication data for indicating performance of operation on voxels in a target area, wherein the operation indication data is generated by triggering the voxels through a virtual reality device, and the first client is related to the virtual reality device; the first client sends the operation indication data to a server, so the server sends the operation indication data to a preset client set, wherein the preset client set comprises the first client and at least one second client related to the first client; the first client receives the operation indication data sent by the server; and the first client performs the operation on the voxels in the target region corresponding to the first client according to the received operation indication data, thereby obtaining the voxel data corresponding to the operation. According to the method and the device, the technical problem that the data processing quantity of synchronizing the voxel data is high is solved.

The invention provides a network device for which the 1+1 redundancy architecture is adopted. The network device comprises a master card and a slave card. The master card is communicatively connected with a terminal device and is used for receiving and processing a plurality of data sent by the terminal device. The slave card is communicatively connected with the terminal device and the master card and is used for receiving a plurality of data sent by the master card so as to backup the data and process the data together with the master card under the same state. The invention also provides a synchronous data transmission method. The master and slave cards transmit the data adopting the same sequence and principle and process the data under the same state so as to reach the synchronization of the data transmission, thus reducing the risk of omission of the data transmission and realizing the backup of the data without the MCP so as to reduce the burden of the MCP.

The embodiment of the invention provides a virtual reality system and an information transmission method and device thereof, belonging to the virtual reality technology field. The method comprises: monitoring the flashing state of an infrared luminous point, and when the number of times of the synchronous light-dark alternating of the infrared luminous point reaches the preset number of times, identifying the encoding information transmitted by the infrared luminous point according to the flashing state of the infrared luminous point. The virtual reality system and the information transmission method and device thereof provided by the embodiment of the invention allow the transmission encoding information between a helmet and a handle in a VR system to maintain synchronization.

The invention discloses an electric connector which is used for electrically connecting a first butt joint component to a second butt joint component. The electric connector comprises an insulating body; at least one differential signal pair which is disposed on the insulating body, and comprises a long signal terminal and a short signal terminal, wherein the length of the long signal terminal isgreater than the length of the short signal terminal, the thickness of the long signal terminal is greater than the thickness of the short signal terminal, and the long signal terminal has a first contact portion, a first guiding portion and a first bend portion which is connected with the first contact portion and the first guiding portion, the short signal terminal has a second contact portion,a second guiding portion, and a second bent portion which is connected with the second contact portion and the second guiding portion. The first contact portion and the second contact portion simultaneously make contact with the first butt joint component, and the first guiding portion and the second guiding portion simultaneously make contact with the second butt joint member.

The invention discloses a high-speed data collection device and method based on an FPGA. The system comprises a binocular camera, an IMU, an FPGA platform and an internet access module, the binocularcamera and the IMU are connected to the internet access module through the FPGA platform, and tracking signals of two image sensors of the binocular camera are synchronously triggered by the FPGA platform and synchronously output collected real-time images to the FPGA platform; the IMU and the two image sensors achieve hardware synchronization through the FPGA platform; the FPGA platform comprisesan FIFO and a binocular IMU transmission IP core. Wherein the FIFO is connected with the IMU and the two image sensors, stores real-time binocular images and IMU data at the same time, is connected with the binocular IMU transmission IP core, and transmits synchronous binocular images and IMU data to the internet access module through the binocular IMU transmission IP core. According to the invention, binocular images and IMU data can be synchronously transmitted in a low-delay manner, and the method is suitable for the fields of visual navigation positioning, industrial detection and recognition.

The invention discloses a system for realizing audio-video and data one-way transmission under a network isolation state based on a high-definition multimedia interface and a dynamic two-dimensional code. The system comprises an intranet, an analysis server, a loudspeaker, a high-definition wire rod, an extranet, a PC, and a sound acquirer; the analysis server is accessed into the intranet; the analysis server is connected with the loudspeaker; the PC is accessed into the extranet; the PC is connected with the sound acquirer; and the analysis server is connected with the PC through the high-definition wire rod. By use of the system disclosed by the invention, the external network system can safely transmit audio-video stream and two-dimensional code data to the internal network in real time through the high-definition multimedia interface under the network isolation state; the internal network analysis server acquires the audio-video stream in real time, extracts a two-dimensional code, decodes the related information of the two-dimensional code picture, saves and manages the related information, and then prompts whether the feedback information decoding is successful through the voice.

The invention discloses a synchronous control method and device of video streams. The synchronous control method of the video streams includes controlling a master control chip and a slave control chip to be subjected to frame and line synchronization in sequence, wherein the master control chip and the slave control chip constitute a time sequence control chip of the video streams; transmitting cached line data of the video streams to corresponding display units by the master control chip and the slave control chip after once line synchronization of the master control chip and the slave control chip is completed. By the aid of the synchronous control method and device, the problem that the video streams are difficult to synchronize in double control chips in the prior art is solved, and on the basis of high-speed transmission of the video stream signals, signal transmission integrity is guaranteed, and display effect of the video streams is optimized.

The invention provides a mirror image transmission method and device, electronic equipment and a storage medium. The method comprises the steps of identifying target metadata information contained ina mirror image filtering rule according to the mirror image filtering rule set for a target mirror image warehouse; obtaining a parameter value corresponding to the target metadata information of eachmirror image according to the metadata information stored for each mirror image in the source mirror image warehouse; for the parameter value corresponding to the target metadata information of eachmirror image, judging whether the parameter value corresponding to the target metadata information of the mirror image meets a filtering condition stored for the target metadata information in a mirror image filtering rule or not; if yes, enabling the mirror image to serve as a target mirror image to be transmitted from the source mirror image warehouse to the target mirror image warehouse. By setting the mirror image filtering rule, the transmitted mirror images are all specific mirror images required by the target mirror image library, so that the transmission efficiency can be ensured, thestorage space in the target mirror image library can be saved, and the waste of bandwidth resources in the transmission process is reduced.

The invention discloses a detection device for welding frame deformation calibration. The detection device comprises a rack platform used for being in butt joint with an external transmission mechanism; a liftable roller transmission mechanism is arranged below the rack platform, the roller transmission mechanism is used for continuously transmitting the welding frame transmitted by the external transmission mechanism to the rack platform after being lifted, and enabling the welding frame to drop on the rack platform after being lowered; and a positioning fixing mechanism and a liftable detection mechanism are arranged on the rack platform, and the position fixing mechanism is used for lowering the detection mechanism and pressing the detection mechanism on the welding frame to carry out detection work after adjusting and fixing the position of the dropped welding frame. The detection device has the advantages of being high in automation and intelligence degree, high in detection efficiency, high in detection precision, and capable of greatly reduces the labor intensity and improves the product quality.

The invention discloses a thread synchronization method. The method comprises the steps of setting an event threshold value and an rsync threshold value are set; creating a monitoring process to monitor and read the events in the monitoring mode, writing the events in the monitoring mode into an event pool, and judging whether the number of the events in the event pool exceeds an event threshold value or not; if the content does not exceed the event threshold, not synchronizing the content in the file system server; if the number of the called rsync exceeds the event threshold value, triggering a multi-thread calling process, calling the rsync process, executing a synchronization operation when the number of the called rsync exceeds the rsync threshold value, and synchronizing the content in the file system server to the web server; through the above mode, the synchronization work from the server to the client can be completed by using the message notification mechanism of the Linux kernel, the frequent operation of rsync is avoided, excessive rsync threads are prevented from being started, and the resource consumption of the server is reduced.

The invention discloses a transmission control method of bidirectional voice and operation control data and a system thereof. A control terminal and a host are included. The control terminal comprises a sampling module, a playback module, a terminal audio encoding and decoding module, a button control module and a terminal transmission module. The host comprises a host analysis module and a host transmission module. The host transmission module is connected to the host analysis module. The terminal transmission module is connected to the host transmission module and the button control module respectively. The sampling module generates a voice simulation signal. The terminal audio encoding and decoding module encodes the voice simulation signal into a voice digital signal and packs into a voice packet. The button control module generates operation control data. The terminal transmission module establishes a time sharing reuse mechanism to carry out queuing transmission on the voice packet and the operation control data, and cooperates with the host to schedule all the control terminals. A low delay transmission problem to a large data flow under a narrow bandwidth is solved, and synchronous transmission of the bidirectional voice and operation control data of multiple users during concurrent connection can be effectively guaranteed.

The invention discloses a non-contact type 10kV vacuum circuit breaker vacuum degree test apparatus. The test apparatus comprises a coupling capacitive probe, a signal processing unit, a signal transmission unit, an on-site display and a remote communication interface; the coupling capacitive probe, the signal processing unit and the signal transmission unit are connected in sequence; and the on-site display and the remote communication interface are mounted on the signal transmission unit. The test apparatus can bear high voltage, high electric field intensity, impact and vibration generated in the operation of the circuit breaker, and the environment temperature under the temperature rising conditions in operation; meanwhile, the installation of the coupling capacitive probe does not affect each performance index of the vacuum circuit breaker; the test apparatus can correctly reflect the conditions of the vacuum degree of the vacuum circuit breaker; and the remote communication interface is connected with a monitoring chamber, so that the data information collected and transmitted by the apparatus can be synchronously and vividly displayed.

The invention provides an on-line painting device, which relates to the field of cigarette package machinery. The on-line painting device, for painting coating liquid on a paper-based surface of inner backing paper, comprises a transmission mechanism for transmitting the inner backing paper, a painting mechanism for painting the paper-based surface of the inner backing paper with the coating liquid on line, a stocker for storing the coating liquid, and a driving mechanism for driving the coating mechanism to rotate automatically. The coating mechanism includes a coating roll able to rotate automatically. A coating part of the coating roll communicates with the stocker and an outer surface of the coating part of the coating roll is close to the paper-based surface of the inner backing paper. According to the invention, it can be ensured that the inner backing paper can be protected from being broken during painting process and that perfuming painting on the inner backing paper can be reliably and effectively carried out on line.

The invention relates to the field of electronic servers, and discloses an RJ45-type dual-network dual-serial-port server. The RJ45-type dual-network dual-serial-port server includes a RJ45 terminal, a dual-network card module, a serial port module and a microprocessor, wherein the microprocessor is connected to the dual-network card module and the serial port module separately to achieve the conversion and transmission between network port data and serial port data; the dual-network card module is equipped with two interfaces which are matched with the RJ45 terminal; the serial port module is equipped with two interfaces which are matched with the RJ45 terminal. According the RJ45-type dual-network dual-serial-port server, the problem is solved that an internet access is simplex in the prior art, and dual-network dual-serial-port signal transmission is achieved.

The invention relates to the technical field of electronic servers and discloses an RJ45-type dual-network eight-serial port server. The RJ45-type dual-network eight-serial port server comprises an RJ 45 terminal, a dual network card module, serial port expansion circuits, serial port processing circuits and a micro-processor. The micro-processor is connected to the dual network card module and the serial port expansion circuits such that internet port data and serial port data can be transmitted and converted. The dual network card module is provided with two ports matching the RJ45 terminal. One ends of the two serial port expansion circuits are parallelly connected to the micro-processor. The eight serial port processing circuits are connected to the other ends of the serial port expansion circuits. The serial port expansion circuits are provided with a port matching the RJ45 terminal. The RJ45-type dual-network eight-serial port helps resolve the problem in the prior art of a single port and realizes signal transmission of dual-network dual-port signal transmission and transmission of multi-port signals.

The embodiment of the invention provides a fault diagnosis and prediction system based on a distributed water jet propulsion device, and the system comprises a mechanical diagnosis and prediction subsystem which is used for collecting, processing and storing a first parameter of a mechanical system of the device, carrying out the feature extraction based on the first operation parameter, and carrying out the health state evaluation and fault diagnosis and prediction; the control diagnosis subsystem is used for collecting, processing and storing a second parameter of a control system of the device, performing feature extraction based on the second parameter, and performing health state evaluation and fault diagnosis; the hydraulic diagnosis subsystem is used for collecting, processing and storing third parameters of a hydraulic system of the device, performing feature extraction based on the third parameters, and performing health state evaluation and fault diagnosis; and the upper computer control subsystem is in communication connection with the three subsystems and is used for performing parameter configuration, data management, device-level comprehensive diagnosis and health state evaluation of the subsystems and displaying real-time data and data processing results.

The invention relates to an internal stress monitoring system for a railroad bridge. The system comprises a fixed disc and a stress application mechanism arranged on the fixed disc; the stress application mechanism comprises an air cylinder, a screw rod, supporting rods and a stress sensor; one end of the screw rod is connected with the output end of the air cylinder; the other end of the air cylinder is connected to the stress sensor through a lead block; and the two sides of the stress sensor are slidably connected to sliding sleeves of the supporting rods through guide rods. The internal stress monitoring system provided by the invention can be used for detecting the internal stress change of the bridge, predicting the abnormality of the bridge in advance and analyzing the deformation of the bridge, thereby preventing risks in advance and providing a maintenance basis for the safe operation of the bridge and a large-scale building.

The invention relates to a data unit synchronization method in a maneuvering environment. The data unit synchronization method comprises the following steps: (a) carrying out data unit transmission ina narrow-band network environment; (b) periodically checking and acquiring incremental log files generated by each data unit by the data unit storage management layer; (c) enabling a data unit storage management layer to acquire a generated incremental log file of the data unit, and encrypts and compresses the file at the source library end; (d) resuming the encrypted and compressed incremental log file to a target library end through a breakpoint, and decompressing and decrypting the incremental log file; and (e) executing the decompressed and decrypted incremental log file statement to finish data synchronization. Therefore, effective transmission synchronization of the data units in a narrow-band network environment can be ensured.

The invention relates to resin product sticker equipment which comprises a transmission device, a first clipping sticker device, a second clipping sticker device, a third clipping sticker device, a first extrusion device, a second extrusion device, a third extrusion device, a taking base and multiple machining bases. The taking base and the multiple machining bases are sequentially arranged alonga straight line, the taking base is used for stacking resin product bodies, the transmission device is used for taking the resin product bodies out of the taking base and transferring the resin product bodies among the machine bases in sequence, the number of the machining bases is five, and a first machining site, a second machining site, a third machining site, a fourth machining site and a fifth machining site which are arranged in sequence are formed. By adopting the scheme, the resin product sticker equipment improves the percent of pass and improves machining efficiency.

The invention discloses a multi-terminal message transmission method and device based on user login accounts, relates to the field of information technology, and can realize message transmission and synchronization among a plurality of terminals corresponding to the same user account. The method comprises the steps of: after different account information is configured for terminals corresponding to different user login account respectively, firstly receiving an information sending request sent by the first terminal, wherein the information sending request carries a user login account corresponding to the first terminal and information to be sent; then searching the account information of each terminal corresponding to the user login account from a preset database, wherein the preset database saves the account information of the terminals corresponding to different user login accounts respectively; and finally, sending the information to be sent to all of or part of the terminals corresponding to the user login accounts according to the account information of the terminals corresponding to the user login accounts. The method and the device are suitable for multi-terminal message transmission.