8 results about "Information exchange" patented technology

The invention discloses a method for determining a decompression algorithm and a system thereof, before the transmission of the compressed information to be exchanged by a communication end and a communication opposite end, the communication end send a request of a compression algorithm protocol to the communication opposite end which negotiates with the communication end to select out a compression algorithm supporting by both parts. The invention, as the two communication parts negotiate and select out a compression algorithm supported by both parts, in the following information exchange process, can compress/decompress information by the local supported compression algorithm thereof, thereby reducing decompression time as well as the time delay of information exchange.

The invention relates to a multi-protocol network convergence information exchanger. The multi-protocol network convergence information exchanger comprises a Zigbee coordinator, a Bluetooth gateway and an ARM processor, wherein the Zigbee coordinator is used for monitoring Zigbee broadcast data packets of wireless sensor nodes in a Zigbee network and transmitting the analyzed Zigbee broadcast data packets to the ARM processor, the Bluetooth gateway is used for monitoring Bluetooth broadcast data packets of Bluetooth devices in a Bluetooth network and transmitting the analyzed Bluetooth broadcast data packets to the ARM processor, and the ARM processor is used for converting the Zigbee broadcast data packets and the Bluetooth broadcast data packets into data in the TCP/IP format, and transmitting the data in the TCP/IP format to the internet through an Ethernet interface. The multi-protocol network convergence information exchanger can adapt to a multi-protocol sensor network coexistence environment, solve the problem of channel interference and set up interconnection and interworking with a high-speed Internet.

The invention discloses a smart card swipe machine and an information exchange method. The smart card swipe machine is characterized in that the swipe machine is firstly initialized by a first-stage authority card, and is secondly initialized by a third-stage authority card which records second-stage authority card passwords, equipment user codes, batch numbers and card number information, and then a fourth-stage authority card is identified; and simultaneously, the smart card swipe machine utilizes a mobile communication module in the swipe machine to send short message information to a server. The mutual certification of information among multi-stage authority cards, a card dispenser and the swipe machine is combined with mobile communication function to master the condition of service of user terminal equipment in real time, thereby ensuring the authenticity of current information interaction and improving the reliability of safety certification.

The invention discloses a sensor network positioning method based on hop counts. In a wireless sensor network, communication distances of all nodes are the same, one node only receives information of other nodes within limited hop counts, and a non-linear equation set is constructed by utilizing the ratio of the hop counts from different anchor nodes to unknown nodes, so that the unknown nodes are positioned. By means of distributed calculating and processing, node information exchange times are decreased, information conflict and network node power consumption are reduced, positioning precision of the unknown nodes is improved, and the method has a certain application value and is capable of meeting the requirement on high-precision distributed positioning of the wireless sensor network.

The invention discloses a method for realizing a cyber-physical system (CPS) model and the model thereof. The method includes the following steps: step 1, obtaining n subsystems with different targetfunctions according to the functional requirements of a CPS, and establishing n subsystems with different target functional requirements and corresponding databases; step 2, establishing an HIM matrix, encoding the n subsystems and the databases, and separately placing the subsystems and the databases on an oblique diagonal of the HIM matrix; step 3, establishing all service exchange folders corresponding to a single subsystem, encoding the folders, and placing the folders above and below the oblique diagonal of the HIM matrix; step 4, establishing information exchange standards for the service exchange folders of each subsystem to form an HIM model; and step 5, establishing a network cloud exchange operating system based on the HIM model to realize a seamless connection between contents and formats of information exchange services of each system. According to the scheme of the invention, the 'Internet of services' for performing the seamless connection among all software and hardwaresubsystems can be achieved.

The invention relates to an asynchronous data synchronization method of a four-machine hot backup real-time system, belongs to the technical field of multi-machine hot backup control systems on spacecrafts, and particularly relates to an asynchronous data synchronization method based on the four-machine hot backup real-time system. Information exchange between single machines is carried out, whether the data information is used or not is determined according to the states of the events received by the four machines, the data information is used as long as the state of the event received by oneof the four machines is valid, the problem that the four machines are asynchronous due to the fact that a single machine cannot receive data caused by faults is solved, and the reliability and safetyof the hot backup system are improved.