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 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.

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 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 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 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 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 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.