105results about How to "Ensure communication reliability" patented technology

The invention relates to a lowered acoustic Doppler current profiler (LADCP) with an acoustic telemonitoring function, wherein, an underwater acoustic communication technology is adopted to transmit the data of depth and height from the bottom of an LADCP suspension system in real time to a water surface control unit by code and decode with code division multiple access for monitoring the positionin water of the suspension system in real time. The lowered acoustic Doppler current profiler comprises an underwater main body part and a water surface telemonitoring part; a master LADCP is internally provided with a communication encoding module, wherein, the master LADCP circularly measures a current profile at fixed time and obtains the height to the bottom according a bottom tracking resultand a depth value by a pressure sensor at the same time; the communication encoding module carries out CDMA code modulation on the height value and the depth value and then outputs the values by a high-speed DA every 1-10s or so, preferably 5s, and emits out the values through a watertight cable and an underwater acoustic communication transmitter; and the underwater acoustic communication transmitter at a water surface telemonitoring part carries out amplification, automatic gain control and filtration on the received signal and then sends the signal to a deck unit through a Kevlar cable.

The invention discloses an on-chip communication method and an on-chip communication device of an integrated circuit based on an asynchronous structure. The structure comprises the following steps of 1, directly connecting main equipment to each auxiliary equipment request interface by a request bus in advance, sequentially and serially connecting a plurality of auxiliary equipment response interfaces to form an auxiliary equipment response chain in advance, and connecting the auxiliary equipment response interface on the head of the auxiliary equipment response chain with a main equipment response interface; and 2, when the main equipment communicates with the auxiliary equipment, receiving a request message consisting of a plurality of micro-packets from the main equipment by the auxiliary equipment through the request bus, and sending a response message consisting of the micro-packets to the main equipment by the auxiliary equipment through the auxiliary equipment response chain. The device comprises the main equipment and the auxiliary equipment, wherein the main equipment is directly connected with each auxiliary equipment through the request bus, the auxiliary equipment are sequentially and serially connected to form the auxiliary equipment response chain, and the auxiliary equipment on the head of the auxiliary equipment response chain is connected with the main equipment. The method and the device have the advantages that the number of long signal lines is little, the occupation of hardware resources is little, and the expandability is good.

The invention discloses a Beidou satellite system-based tide level data transmission and control method. The Beidou satellite system-based tide level data transmission and control method comprises a data acquisition process and a data processing and publishing process, wherein the data acquisition process comprises the following steps of: sending a tide level data analog signal collected by a collector to a data A / D (Analog to Digital) converter, converting the tide level data analog signal to a digital signal through the A / D converter, and transmitting the digital signal to a first Beidou communication receiver; the data processing and publishing process comprises the following steps of: sending tide level data to a Beidou communication director of a control unit by the first Beidou communication receiver based on the Beidou satellite system; transmitting the data to a PC (Personal Computer) by the Beidou communication director; carrying out filtering, curve plotting and processing on the tide level data by the PC; generating a standard chart according to daily production requirements; connecting the Beidou communication director with the PC; determining a working state according to a tide level curve; and finally publishing the processed data to the public based on the Beidou satellite system. The Beidou satellite system-based tide level data transmission and control method is not restricted by a transmission distance, is capable of realizing efficient dispatching management of construction ships and improving the dredging construction efficiency.

An imaging apparatus for performing wireless communication with a flash device, including a generation unit configured to generate a plurality of emitting instructions which include timing information indicating a timing for emitting the flash device, wherein each emitting instruction includes different timing information, and a transmission unit configured to successively transmit the plurality of emitting instructions to the flash device, wherein the transmission unit transmits each emitting instruction in succession based on the timing information.

The invention discloses a public community charging pile data concentrator with a dual-network complementary function and an application method of the data concentrator. The data concentrator comprises a main control board, an LED (light-emitting diode) display screen, an uplink communication module, a downlink communication module, a storage module, an intelligent electric meter, a keyboard, an entry and exit processing module, an LED indication lamp and an equipment maintenance port, wherein the LED display screen, the uplink communication module, the downlink communication module, the storage module, the intelligent electric meter, the keyboard, the entry and exit processing module, the LED indication lamp and the equipment maintenance port are respectively connected with the main control board. The data concentrator communicates with charging piles in a community by a micro-power wireless module, so that the communication fee of each charging pile is saved, the communication cost of a whole electric vehicle operation network is reduced, communication links capable of directly accessing into a background of an electric vehicle operation management system are reduced, and the running speed of the background of the system is increased.

The invention provides a local area network switch system and a pluggable gigabit passive optical network optical network unit GPON ONU for the local area network switch system. The pluggable GPON ONU comprises a bidirectional optical transceiver, an ONU chip, a WAN (Wide Area Network) interface processing module, a power processing module, a management interface module and a WAN interface connector. The pluggable GPON ONU can be directly inserted into a WAN interface of a router, so that a network cable is saved, and the router can provide uplink and downlink of the GPON; meanwhile, the pluggable GPON ONU and the router share a power supply, so that the size and the power consumption are relatively small, and convenience and energy conservation are realized.

The invention provides a paging method, a positioning information sending method, a core network node and a base station, and relates to the technical field of communication. The paging method is applied to a core network node in a satellite Internet communication system, and comprises the following steps: obtaining a setting mode of a tracking area TA in the satellite Internet communication system; determining a base station for paging the terminal according to the setting mode; sending a paging message to the base station, wherein the setting mode comprises one of the following modes: dividing the satellite Internet communication system into a TA; setting at least two fixed TAs; and setting at least two non-fixed TAs. According to the scheme, the base station used for paging the terminalwhen the terminal needs to be paged is determined according to the setting mode of the TA in the satellite Internet communication system, so the paging process in the satellite Internet communicationsystem is perfected, and the communication reliability of the satellite Internet communication system can be ensured.

The invention discloses charging piles for wireless carrier dual-network complementation of public communities and the application method thereof. The charging piles comprise main control boards, opening-in and opening-out processing modules, measurement processing modules, printing modules, intelligent electric meters, keyboards, CAN data interfaces, intelligent card reading-writing modules, cameras, LED display screens and communication modules. The application method solves the problem that the large scale of charging piles are accessed in an electric vehicle background in the public communities. Through the application method, the data interaction can be implemented between the charging piles and the electric vehicle background through two free communication methods of radios and carriers, so that the expensive communication cost is reduced, and the influence to the communication quality from peripheral interference sources or other same-frequency-band wireless signals is effectively avoided.