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90results about How to "Shorten sending time" patented technology

Electromagnetic surveying system while drilling of adjacent-well parallel intervals

The invention discloses an electromagnetic surveying system while drilling of adjacent-well parallel intervals, which is capable of providing accurate guiding measurement and calculation for well path control of wells with complicated structures such as double-horizontal wells, directional wells, interspaced wells and the like. The system mainly comprises a magnetic short section, an underground double-magnetic sensor survey meter, a computing system for the adjacent-well parallel intervals, a ground display system and the like. In the invention, the underground double-magnetic sensor survey meter comprises two high-precision alternating magnetic field sensors, can detect two groups of rotating magnetic field signals, and can accurately detect the adjacent-well parallel intervals by a certain drilling footage without a drill bit, thereby being capable of fishing surveying within shorter time; and a data analysis and calculation procedure can be put in the well, and sends few calculated data to the ground, thereby saving the data transmission time. The invention has convenient use, provides an efficient innovative and high technology for the surveying while drilling and the control of the adjacent-well parallel intervals.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Civil air defense emergency alert information message compression encoding method based on Beidou communication functions

The invention provides a civil air defense emergency alert information message compression encoding method based on Beidou communication functions. The method comprises: a civil air defense common word code library is built; words included in the code library are expressed with corresponding codes and the codes are encapsulated into subframes; characters not included in the code library are expressed with corresponding computer codes; the computer codes and the subframes are connected according to the order of the original message to form a message text, and a message header and a message tail are added to the message text to form a to-be-sent message; it is determined if the length of the to-be-sent message is greater than the maximum length, L bytes, permitted by the Beidou system, and if so, the to-be-sent message is segmented into a plurality of sub-messages, the length of which is no greater than L bytes, for sending, each sub-message having a message header and a message tail; otherwise, the to-be-sent message is sent directly. The method can reduce the length of the message and the sending times of a long message. The alert information notifying time is shortened, and the flow is saved. The method is simple and easy to implement with good reliability.
Owner:ELECTRONICS ENG COLLEGE PLA

Satellite network inter-satellite routing method based on topology predictability

The invention belongs to the field of communication, and relates to a satellite network inter-satellite routing method based on topology predictability. The method comprises the following steps: initializing an inter-satellite link on-off time table and a link state database according to an orbit parameter six-tuple of a first satellite; setting and starting an overtime timer; when the timing of the timeout timer is ended, generating a routing link state notification for generating a first satellite node; setting an information judgment value; if the judgment value is true, diffusing the generated LSA to all other satellite nodes in the domain by adopting an LSA message diffusion mechanism, and restarting an overtime timer; if the judgment value is not true, deleting the generated LSA, andrestarting an overtime timer; the second satellite receives the LSA sent by the first satellite; calculating the route of the second satellite by adopting a shortest path algorithm according to the obtained LSA, and completing the route information transmission of the satellite; according to the invention, the sending number of routing control messages can be greatly reduced, and meanwhile, the routing convergence rate is greatly improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Short message dual-reception method, platform and networking system

The invention provides a short message dual-reception method, platform and networking system. The method comprises steps of receiving a short message sent by a short message center via a safety gather gateway, wherein the short message comprises a short message identifier, a sender number, a receiver number and short message content; and querying a pre-stored subscription database according to the receiver number, determining that the subscription database has dual-reception service subscription information corresponding to the receiver number or not, if a determination result sent by a spam short message system to the short message center is not obtained in a preset period or a display short message obtained in the preset period is a non-spam short message, sending the account of a third party platform and a short message to the third party platform according to the identifier of the third party platform. Therefore, the short message dual-reception platform can sent the short message according to the result of querying the subscription database and the determination result of the spam short message system after the subscription database is queried, the time for sending the short message is shortened, and the efficiency of sending the short message is improved.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD

WiFi-ZigBee network-oriented cooperative transmission method

The invention relates to the technical field of computer application, in particular to a WiFi-ZigBee network-oriented cooperative transmission method, establishes a coexistence network cooperative transmission model, provides a dynamic convergence blank gap technology, and improves the communication efficiency by reasonably scheduling blank gaps generated in a WiFi network communication process, the data transmission of the ZigBee network in the heterogeneous network coexistence environment is ensured; a non-feedback network layer data coding technology is used, a WiFi AP is selected as a coordinator of a heterogeneous network, the number of data packets needing to be sent to the network is determined according to WiFi network communication flow in a period, data coding is carried out on the data, and when the number of the sent data packets reaches a threshold value, successful decoding feedback of a receiver does not need to be received, and the generation and the transmission of the data packet are stopped. According to the invention, ZigBee communication in a heterogeneous network can be protected from WiFi interference, the transmission delay of a data packet is reduced, the data packet receiving rate of the ZigBee network is increased, the asymmetry of a WiFi-ZigBee communication link is improved, and the transmission reliability is improved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Electromagnetic surveying system while drilling of adjacent-well parallel intervals

The invention discloses an electromagnetic surveying system while drilling of adjacent-well parallel intervals, which is capable of providing accurate guiding measurement and calculation for well path control of wells with complicated structures such as double-horizontal wells, directional wells, interspaced wells and the like. The system mainly comprises a magnetic short section, an underground double-magnetic sensor survey meter, a computing system for the adjacent-well parallel intervals, a ground display system and the like. In the invention, the underground double-magnetic sensor survey meter comprises two high-precision alternating magnetic field sensors, can detect two groups of rotating magnetic field signals, and can accurately detect the adjacent-well parallel intervals by a certain drilling footage without a drill bit, thereby being capable of fishing surveying within shorter time; and a data analysis and calculation procedure can be put in the well, and sends few calculated data to the ground, thereby saving the data transmission time. The invention has convenient use, provides an efficient innovative and high technology for the surveying while drilling and the controlof the adjacent-well parallel intervals.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Communication method and device for converting synchronization to asynchronization in on-line system

The invention provides a communication method for converting synchronization to asynchronization in an on-line system. According to the method, after a JMS message is constructed, whether a connection, a session and a producer are generated in a cache is judged based on a thread number corresponding to the JMS message; if yes, the connection, the session and the producer are multiplexed; and otherwise, a new connection, a new session and a new producer are created according to the thread number corresponding to the JMS message. In this way, the situation that a connection, a session and a producer need to be created again every time a message is sent is avoided, message sending time is shortened, and message sending efficiency is improved. Meanwhile, a correlation identifier of each message comprises a universally unique identifier (UUID) shared by threads and a self-increasing serial number; after the JMS message sent to a target MQ request queue is processed and returned to a return queue, a return message containing the UUID exclusive to an instance is screened coarsely, and therefore the same instance can only receive the message corresponding thereto; and then the return messages are screened finely through the self-increasing serial numbers, and therefore it is guaranteed that the return messages obtained through polling within preset time are correct return messages.
Owner:BANK OF CHINA
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