39results about How to "Safe and Stable Transmission" patented technology

An all-weather maintenance system for an offshore wind turbine maintenance program includes a maintenance capsule for transporting tools, parts and maintenance personnel to and from respective wind turbine towers, a maintenance vessel with a capsule support apparatus for transporting capsules supported on board by the capsule support apparatus to and from respective wind turbine towers, and a crane assembly with a trolley for transporting capsules between the respective wind turbine towers and the maintenance vessel.

The invention discloses a building system and method of a wireless communication network for emergency rescue in an underground coal mine. The system comprises a rescue commanding center computer and a rescue robot system. The rescue robot system comprises a carrying robot, a probe robot placed in a robot storage cabin, and a wireless communication relay placing system which places a communication network robot and is placed in a placing system storage cabin. The wireless communication relay placing system comprises a wireless communication relay placing device and a wireless communication relay. The method comprises the steps that first, the carrying robot detects and processes signals, the placing device in the placing system storage cabin casts the wireless communication relay and draws an emergency rescue wireless communication network link map; then, the communication network robot is placed to detect and process the signals and the wireless communication relay is cast to update the map till the underground emergency wireless communication network is built. The system and the method are reasonable in design, strong in practicality and high in popularization and application value.

An encryption / decryption method, device and system for random data are provided. In use, at first, the data of the original file is subjected to encryption twice at the encrypting party, in the process of encryption, key random location S and the key of AES public key encryption are hidden in the primary encrypted data, and the last hidden random location S and AES key are transferred via a server, the random location length and AES key length are both fixed length. The receiver intercepts the key and random location by a fixed length, The AES key is decrypted by the RSA private key to get the real plaintext AES key, and then the random position is fixed. The position of the encrypted data can be obtained by the random position, and then the character string of the random position is converted into the original data after the AES secret key is decrypted by the AES algorithm. This file transfer process is more secure and stable than the existing one. When the message packet is intercepted and cracked, the real original file data cannot be obtained directly.

The invention provides an Internet of Vehicles based on an MQTT protocol. The Internet of Vehicles based on MQTT protocol comprises a plurality of electric vehicles, an Internet of Vehicles monitoring center and a plurality of mobile communication terminals, each electric vehicle comprises a first communication module, the Internet of Vehicles monitoring center comprises a second communication modules, each mobile communication terminal comprises a third communication module, the second communication module communicates with each first communication module and each third communication module through the MQTT protocol, each first communication module is used for transmitting the state information of the corresponding electric vehicle to the Internet of Vehicles monitoring center, and the Internet of Vehicles monitoring center processes the received state information of each electric vehicle and releases the processed state information to the corresponding mobile communication terminal according to the theme subscribed by each mobile communication terminal.

The invention provides a data transmission method and device, and the method comprises the steps: carrying out the customized collection of different data sources to obtain different collected data, and enabling the different collected data to be analyzed into data packets in a unified data format; writing the data packets in the unified data format into a data pipeline for caching; reading a datapacket cached in the data pipeline, and writing the read data packet into a downstream data storage service to realize data transmission; and in the data transmission process, limiting the data reading flow rate according to the preset flow peak value of the downstream data storage service. Therefore, the data is locally buffered through the data pipeline, and the data transmission flow is dynamically adjusted through the flow control assembly, so that the whole transmission process is safe and stable, and the data transmission rate is effectively improved.

An all-weather maintenance system for an offshore wind turbine maintenance program includes a maintenance capsule for transporting tools, parts and maintenance personnel to and from respective wind turbine towers, a maintenance vessel with a capsule support apparatus for transporting capsules supported on board by the capsule support apparatus to and from respective wind turbine towers, and a crane assembly with a trolley for transporting capsules between the respective wind turbine towers and the maintenance vessel.

The disk transfer device according to the present invention includes a disk tray for holding the disk during the disk transfer action and a tray driving mechanism for driving the tray forward and backward between a first position which is the retracted location of the tray corresponding to a turn table in a disk drive and a second position which is the loading and unloading location of the disk outwardly of the disk drive, wherein the disk tray comprises a main tray for supporting one side of the disk and a sub tray provided separately of the main tray for holding the other side of the disk, the main tray and the sub tray are joined to each other to have a pocket for accommodating partially the disk.

The invention discloses a double-sided cleaning device for plane glass plate processing. The double-sided cleaning device comprises a cleaning box, an upper pressure roller set, a lower pressure roller set, an upper cleaning unit, a lower cleaning unit, a water storage tank and universal driving shafts. The cleaning box is fixed to the top of the water storage tank, and the cleaning box communicates with the water storage tank through backflow holes. A feeding inlet and a discharging hole are separately formed in two sides of the middle portion of the cleaning box, and a glass plate is disposed in the feeding inlet and the discharging hole in a penetrating mode. According to the double-sided cleaning device for the plane glass plate processing, the upper pressure roller set and the upper cleaning unit are arranged on the upper portion of the glass plate, and the lower pressure roller set and the lower cleaning unit are arranged on the lower portion of the glass plate; and the upper pressure roller set and the lower pressure roller set drive the glass plate for transmission, and at the same time, the upper cleaning unit and the lower cleaning unit simultaneously clean the upper andlower surfaces of the glass plate. The input and output of the glass plate are facilitated, the stable and safe transmission of the glass plate is ensured, and cleaning disks and the glass plate can be flushed in an abutting mode; and the cleaning efficiency of the glass plate is improved, and double-sided synchronous cleaning operation is achieved.

The invention discloses an industrial IoT information transmission method and device based on the DL / T645 protocol. The present invention uses widely distributed power lines as the medium of information transmission, greatly reduces factory operating costs, reduces the cost of setting up new communication networks, and meets the requirements for the development of intelligent manufacturing. With the DL / T645 protocol as the main communication protocol, the power carrier module adopts BPLC technology, which can fully guarantee the real-time, efficient, safe and stable transmission of data, and effectively monitor and control the electrical equipment, instruments and The sensor provides stable data transmission hardware, which improves the level of factory monitoring and management. At the same time, in order to overcome the characteristics of high noise, high time variation and high attenuation on the power line channel in the harsh industrial power environment, OFDM modulation is used to optimize the carrier Transceiver circuit, improve its working performance. The invention has the advantages of simple method, convenient maintenance, plug and play, low cost and good use effect.

The invention relates to a relay protection setting calculation and data management system of a distribution network system. The relay protection setting calculation and data management system comprises a distribution network automation module, a protection setting value setting calculation module, a setting calculation platform and a data transmission module, and is characterized in that the distribution network automation module and the protection setting value setting calculation module are connected with the setting calculation platform through the data transmission module. The system has the advantages that the distribution network relay protection constant value can be automatically calculated through the distribution network automation module, the protection setting value setting calculation module and the setting calculation platform, a calculation book and a constant value list are automatically generated, and the problem that distribution network setting calculation automation cannot be achieved due to modeling, setting complexity and the like of a distribution network is solved; distribution network personnel are liberated from tedious manual calculation, repeated work and manual calculation errors of the distribution network personnel are reduced, a technical foundation is laid for intelligent setting of the distribution network, and the automatic set value setting calculation platform can be provided for relay protection distribution network setting calculation personnel.

The invention relates to an NB-IOT intelligent water meter system, whichuses a 4G network technology of NB-IOT to achieve large connection and deep coverage of data, simultaneous uploading of tens ofthousands of water meters in an area can be achieved and the data can be quickly and accurately analyzed and updated, and the data is stably and safely transmitted in a hard well cover 1 meter underground and an underground official net. A technical scheme of low power consumption can greatly reduce the time and labor cost of manual line arrangement and debugging, and the technical scheme of battery power supply is achieved by using the low power consumption technology of NB-IOT, the uploading frequency of the data can be set through a platform so as to meet different periodic requirements ofdifferent clients on data acquisition; under the mode of low power consumption, a power consumption standard of 20UA can be reached, and the requirement that batteries do not need to be replaced for 8-10 years can be achieved under the cycle of data uploading frequency of once a day.

The invention belongs to the technical field of communication, and provides a photoelectric conversion device and a communication system. The device comprises: a signal transmitting module and a signal receiving module; wherein the signal transmitting module comprises: an isolated input end, an encoding unit and an electro-optic conversion unit, the encoding unit encodes optical fiber data received by the isolated input end to obtain encoded data and sends the encoded data to the electro-optic conversion unit, and the electro-optic conversion unit converts the encoded data into an optical fiber data signal for transmission; and the signal receiving module comprises: a photoelectric conversion unit, a decoding unit and an isolated output end, the photoelectric conversion unit converts received optical fiber transmission data into a parallel signal and sends the parallel signal to the decoding unit, and the decoding unit decodes the parallel signal to obtain transmission data and outputsthe transmission data to an external photoelectric hybrid cable through the output end. The photoelectric conversion device provided by the invention has low power consumption and a small size, and realizes safe and fast transmission of signals, and meanwhile, the signal transmitting module and the signal receiving module can be used as transmission links and have a dual optical fiber backup function.

The invention discloses a TBM pressure injection type concrete intelligent control system and a control method thereof. The control system comprises a conveying pump, a local control system and a remote control system. The local control system comprises a local control cabinet, a local controller and a local display screen; the local control cabinet, the local controller and the local display screen are all connected to a CAN bus, the local control cabinet is used for controlling the conveying pump and collecting operation state data of the conveying pump, and the local controller and the local display screen are used for locally processing, monitoring and displaying the operation state data of the conveying pump and processing results of the operation state data; the remote control systemis connected into the CAN bus through a communication protocol converter, and the remote control system can collect and process data in the local control system, monitor and display the data and processing results of the data and remotely control the conveying pump. Free switching of remote and local operations can be achieved, the concrete pressure injection amount is accurately controlled, concrete injection is rapidly and efficiently achieved, and construction safety is guaranteed.

The invention provides a transformer substation equipment box temperature and humidity intelligent operation and maintenance system, and belongs to the technical field of electric power operation and maintenance. Comprising a temperature and humidity acquisition terminal, a wireless aggregator, a wireless transceiver and an upper computer, the temperature and humidity acquisition terminal is arranged in the equipment box, is used for acquiring temperature and humidity data in the equipment box, and has a wireless communication function; the wireless aggregator is arranged at a high position far away from the ground and is used for aggregating wireless signals of the nearby temperature and humidity acquisition terminals and then communicating with the wireless transceiver; the wireless transceiver is arranged on the roof of a monitoring room and is in communication connection with the wireless aggregator and the upper computer; and the upper computer is used for acquiring the temperature and humidity data acquired by the temperature and humidity acquisition terminal. The temperature and humidity data in the equipment box can be monitored in real time, thermal defects of the equipment box can be found in time, and the operation state of the equipment box can be evaluated according to the historical temperature and humidity data.

The invention relates to a multi-screen projection linkage special-shaped interaction device and method, the device comprises a synchronization host and at least two projection blocks, each projection block comprises a control terminal, a signal centralized collection device, a capacitive touch sensor array and a projector projection array, the control terminal is respectively connected with the signal centralized collection device and the projector projection array, and the capacitive touch sensor array is connected with the signal centralized collection device; the control terminal of each projection block is connected with a synchronization host. The synchronous host synchronizes the control terminals of the plurality of projection blocks for synchronous display, and the control terminal of each projection block receives and processes a signal instruction of the corresponding capacitive touch sensor array to form a dynamic picture and then transmits the dynamic picture to the corresponding projector projection array. Compared with the prior art, the method has the advantages of being good in immersive experience, low in later maintenance cost and the like.

The present invention provides a video detection and analysis system, the video detection and analysis system includes: a hardware device, a software engine and a template database; wherein the hardware device includes a video screen device, an information output device and a network device, and the software engine includes A capture engine, a framing engine, and a comparison and recognition engine; the video screen device performs video presentation; the information output device acquires a video picture presented by the video screen, and outputs the acquired video picture information in the form of an electrical signal; The network device provides a stable network environment to ensure stable transmission of information in the form of electrical signals; the capture engine captures the parameter information of the video image information presented by the video screen; the framing engine presents the video screen The video frame information is split into each frame of image information; the comparison recognition engine obtains the detection analysis result by comparing each frame of image information with the template in the template database.

The present invention relates to the technical field of wireless co-screening, and discloses a wireless co-screening device magnetically connected to a transmitting end and a receiving end, including a wireless co-screening device HUB, and the HUB includes: a receiving end RT, on which a receiving end RT is equipped with NFC near-field communication module I, and a magnet module I is installed on the receiving end RT; also includes: a transmitting end TT, on which an NFC near-field communication module II is mounted on the transmitting end TT, and a magnet is installed on the transmitting end TT Module II; before the data exchange between the transmitting end TT and the receiving end RT, the NFC near field communication module II at the transmitting end begins to send data to the NFC near field communication module I at the receiving end only after the identity of the NFC near field communication module I at the receiving end is proved to be legal. The same screen data on the signal transmitting device STE; the transmitting terminal TT realizes non-fixed contact connection with the receiving terminal RT through magnetic attraction. The invention solves the problem of how to ensure the safe and stable signal transmission of the wireless screen sharing device.

The invention discloses a method for accessing a user end to next generation network, the method comprises the following steps: hypothesizing a U interface card into an Ethernet network card, receiving Ethernet frame which is transferred from a TCP / IP protocol layer, step S104, removing Ethernet frame head and exchanging the Ethernet frame head into an IP data packet, and analyzing IP data packettypes, step S106, accessing getaway and receiving data packet from high-grade data link control 2B+D channel, checking the IP data packet, exchanging network address for the IP data packet which is checked, and step S 108, packing the exchanged IP data packet into an Ethernet frame format and sending to soft exchanging core network server. The invention also discloses a system which accesses a user side to a next generation network. The invention achieves the safe and stable transmission of information in different networks under the circumstance without needing to modify any user end application program which is based on TCP / IP communication, which reduces the probability of core switching network service period which is attacked, and lowers complexity of important customer system network building.

The invention discloses an intelligent terminal of a distribution transformer and a working method thereof, and belongs to the technical field of power equipment state detection. Theintelligent terminal comprises a multisensor signal integration module, a data processing and calculating module, an energy-taking power supply module and a communication module, the multisensor signal integration module and the energy-taking power supply module are respectively connected with a temperature sensor, a vibration sensor and a partial discharge sensor which are arranged in the distribution transformer, and the energy-taking power supply module is of a current induction type and is arranged in the distribution transformer; and the multisensor signal integration module is connected with the data processing and calculating module, and the data processing and calculating module is in communication interconnection with the upper computer through the communication module. According to the invention, timely processing of data can be ensured, data redundancy is avoided, real-time evaluation of the operation state of the transformer, fault early warning and life evaluation can be realized, the reliability and safety of the distribution transformer are improved, and the reliability and safety of the whole power supply network are further improved.

The invention provides a sensitive information secure transmission method based on data bridging. The sensitive information secure transmission method comprises the specific steps: S1, a carrier application platform constructing a bridging file; S2, the H5 application obtaining an authentication Token from the carrier application platform through the bridging file; S3, the H5 application carryingthe authentication Token to send a data request to an H5 application server; S4, the H5 application server carrying the authentication Token to initiate a data request to the carrier application platform server; S5, after the carrier application platform server is verified, responding to the request of the H5 application server, generating data, and transmitting the data to the H5 application server; and S6, the H5 application server transmitting the data to the H5 application through encrypted data transmission. According to the sensitive information secure transmission method based on data bridging, transmission of sensitive data is placed at the server, and on the basis of data bridging, symmetric encryption and white list filtering strategies of the server are used, so that data is transmitted more safely and stably.

A communication task adaptive optimization scheduling method supporting dynamic flow control, characterized in that it includes the following steps: a) constructing a communication dispatch center proxy service; b) dividing it into high priority and low priority; c) if it is determined to be high Priority task, go to execution step h), if it is determined as a low priority task, go to execution step d); d) periodically monitor the running status of the adjustable priority queue; e) calculate the low priority Task Execution Control Strength Y ACT ; f) Calculate and dynamically evaluate task execution priority based on task initial priority and service request arrival time Y DP ; g) When it is greater than or equal to the high-priority execution threshold, the low-priority task that has been waiting for a long time is upgraded to high-priority; h) Use the high-priority queue to execute the task. Under the premise of not affecting the normal operation of the terminal, it supports the adaptive optimization and adjustment of the terminal parameter synchronization task, and records and manages the process of terminal parameter synchronization, thereby improving the reliability of terminal operation.

The invention provides a video detection and analysis system. The video detection and analysis system comprises hardware equipment, a software engine and a template database, wherein the hardware equipment comprises video equipment, information output equipment and network equipment, and the software engine comprises a capture engine, a framing engine and a comparison recognition engine; wherein the video equipment is used for displaying a video; the information output equipment is used for acquiring a video picture presented by a video screen and outputting the acquired video picture information in the form of an electric signal; the network equipment provides a stable network environment and ensures that information is stably transmitted in the output process in the form of an electric signal. The capture engine captures parameter information of video picture information presented by a video screen; the framing engine splits the video picture information presented by the video screeninto each frame of image information; and the comparison and recognition engine is used for comparing each frame of image information with a template in the template database to obtain a detection and analysis result.

The invention belongs to the technical field of fire-fighting emergency communication, and discloses an intelligent fire-fighting helmet for high-rise building fire based on mobile communication. Theintelligent fire-fighting helmet is used for the collection, processing, communication and display of audios and videos, environment information and positioning data information. A scheduling cloud server is in wireless communication with the intelligent fire fighting helmet and is used for processing and analyzing the received data; and a command client is connected with the scheduling cloud server and is used for monitoring fire scene environment information, personnel positioning information and audio and video information. According to the invention, mobile communication is taken as a core, 4G private network communication and NB-IoT wireless communication technologies are fused, and the intelligent fire-fighting helmet fusing broadband and narrowband communication is provided and realized in the field of urban high-rise building fire fighting. The intelligent fire-fighting helmet is used as basic equipment, the scheduling cloud platform and the command client are constructed, andfire scene communication data link transmission is more stable and safer by using the 4G private network.

The design of a wireless automatic recognition system based on reduction of the LINUX kernel is not finished, the LINUX kernel is an open-source operating system and does not need to pay for copyright like WINDOWS CE, and the customized kernel makes a greater improvement in meeting industrial real-time requirements, data processing and other aspects and has an LINUX operating system with innovative characteristics. The wireless automatic recognition system also has functions of microcomputers and smart mobile phones, can be embedded into control platforms of industrial machinery, can be embedded into operating platforms of automotive electronics, and can be also applied to control platforms of electric appliances for daily life.

The invention discloses an urban noise map generation system. The system comprises an acquisition module, a mounting box body, a conversion module, a network module, an encryption module, a mounting pipe, a first mounting block, a second mounting block, a fastening bolt, a fixed box, a square block, a connecting plate, a first rotating block, a screw, an extension box, a connecting rod, a first arc-shaped plate, a limiting block, a second arc-shaped plate, a stop block, a sliding block, a fixed column, a first spring, a second rotating block, a connecting column, a limiting rod, a connecting block, a moving block, a baffle ring, a fixing sleeve, a limiting column and a second spring. The acquisition module and the network module are respectively mounted on two sides of the center of the top end in the mounting box body, and the conversion module and the encryption module are installed on the two sides of the center of the bottom end of the interior of the mounting box body correspondingly, and the conversion module is located under the acquisition module module. According to the urban noise map generation system, fixation of fixed objects with different thicknesses is facilitated,so that the application range of the urban noise map generation system is expanded, traditional mounting steps are simplified, and the mounting efficiency is improved.

The invention discloses a video real-time transmission safety monitoring method, a system, a device and a readable storage medium, and the method comprises the steps: carrying out the encryption through employing an ECC encryption method before video transmission, generating a random number seed, generating a random number token according to the random number seed, adding the generated random number token into a payload of an RTP package of a video, transmitting the video to the receiver, the receiver can verify the consistency of the token of the receiving packet and the token stored in the receiving packet and detect the forged video, the security of real-time video transmission is improved, the negative influence of the forged video on the society is reduced, the payload of the RTP packet is used for bearing the random number token, the token content added to the video data packet is prevented from being too long, the effective load of the data packet is reduced, when the network is unstable, the quality of a normally played video picture can be avoided, and the method is suitable for engineering with real-time monitoring property, ensures the authenticity of an online monitoring picture and prevents video forgery attack.

The invention discloses a method, a device and a computer-readable storage medium for controlling gateway equipment. Wherein, the method includes: obtaining the data packet intercepted by the gateway device, wherein the data packet is sent by the cloud server to the terminal device, and performing security detection on the data packet to obtain the target detection result, so as to control the gateway device and the cloud terminal according to the target detection result. Network connection between servers. The invention solves the technical problem that the existing gateway equipment has poor security during data transmission.