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669 results about "Wired communication" patented technology

Wired communication refers to the transmission of data over a wire-based communication technology. Examples include telephone networks, cable television or internet access, and fiber-optic communication. Also waveguide (electromagnetism), used for high-power applications, is considered as wired line. Local telephone networks often form the basis for wired communications that are used by both residential and business customers in the area. Most of the networks today rely on the use of fiber-optic communication technology as a means of providing clear signaling for both inbound and outbound transmissions. Fiber optics are capable of accommodating far more signals than the older copper wiring used in generations past, while still maintaining the integrity of the signal over longer distances.

Coal mine communication network system based on time-sensitive network

The invention relates to the technical field of coal mine fully mechanized mining, in particular to a coal mine communication network system based on a time-sensitive network, and the system comprises a wired communication system, the backbone network of the wired communication system is composed of a plurality of TSN network switches which are in ring network topology connection, and the wired communication system is used for accessing coal mine equipment as a terminal to a TSN network; the wireless communication system is connected with the wired communication system, consists of wireless communication equipment compatible with a TSN protocol, and is used for accessing the coal mine equipment into a TSN network through wireless connection; a communication system based on a time sensitive network (TSN) is established, a real-time, determined and reliable communication network is provided for a coal mine production system, wired and wireless communication systems are adopted, the whole coal mine production control system is covered together, and the requirement of automatic control for data communication is met.
Owner:BEIJING TIANMA INTELLIGENT CONTROL TECHNOLOGY CO LTD +1

Clock signal generation circuit, wired communication transceiver, and electronic device

The invention provides a clock signal generating circuit, a wired communication transceiver and electronic equipment, and the circuit outputs a first DC voltage comprising phase difference information and frequency difference information of a reference clock signal and a feedback clock signal through a phase frequency detection module. The pulse generator generates a narrow pulse signal based on the DC voltage and a reference clock signal, the oscillation frequency of each secondary ring oscillator in the cross-coupled ring oscillator is controlled by the first DC voltage, and the cross-coupled loop performs synchronous coupling and phase sequence adjustment processing on each secondary ring oscillator. One output node in the cross coupling ring oscillator receives the narrow pulse signal, frequency and phase locking is completed in an injection locking mode, and the frequency divider is used for conducting frequency division processing on any high-frequency clock signal and outputting a feedback clock signal. Therefore, a high-frequency multi-phase clock signal with low phase noise and high phase precision can be generated by using the low-frequency reference clock signal.
Owner:FUDAN UNIVERSITY

Method and device for secure data transfer and storage

A data storage device comprising a data port, configured to transceive data via a wired communication channel, a control port, configured to transceive data via a peer-to-peer wireless communication channel, a non-volatile storage medium, and a controller. In response to receiving, from a user device, via the control port, a command to enable control channel access, the controller performs an unlocking process, and, in response to completing the unlocking process, transitions from a locked state to a control channel access state. In response to being in the control channel access state, and in response to receiving, from the user device, via the control port, a write command, the controller stores write data in the storage medium, and, in response to receiving, from a host computer, via the data port, a command to access the storage medium, the controller transmits, to the host computer, a locked state indication.
Owner:SANDISK TECHNOLOGIES LLC

System and Method / Process for In-Field Measurements of Plant Crops

A measurement system including: a. a sensor system that includes: i. a Light Detection And Ranging (LiDAR) module with a laser emitter configured to generate measurement data representing raw range measurements to measure heights of a crop, and ii. a computing module, including: at least one wireline / wired communications module configured to communicate with the LiDAR module for the computing module to acquire the measurement data from the LiDAR module; and at least one wireless communications module configured for the computing module to communicate using a wireless connection / link with a remote computing system that is configured receive the acquired measurement data and to determine / calculate / estimate phenotypic quantities of the crop based on the measured heights for the purpose of high-throughput plant phenotyping (HTPP); and b. a mobile / vehicle mount configured to hold / support the sensor system above the crop and to direct the laser emitter towards the crop.
Owner:AGRI VICTORIA SERVICES PTY LTD

System for improving multi-series parallel power generation of photovoltaic cells

The invention discloses a system for improving multi-series parallel power generation of photovoltaic cells, and relates to the technical field of photovoltaic power supply, the system comprises photovoltaic panels, photovoltaic optimizers, a photovoltaic gateway and an inverter, the power output of a photovoltaic array is optimized through a multi-stage cooperative control strategy, each photovoltaic panel is connected with an independent photovoltaic optimizer, and the photovoltaic panels are connected with the photovoltaic gateways. A working point is dynamically adjusted by adopting an MPPT algorithm, real-time data interaction with a photovoltaic gateway is carried out in a wireless or wired communication mode, the photovoltaic gateway automatically detects open-circuit voltage differences of parallel strings, dynamically adjusts the MPPT voltage range of each string and ensures the overlapping proportion of output voltages, the photovoltaic gateway monitors the duty ratio change of the strings, and when shielding is detected, the photovoltaic gateway is switched on and switched off. The MPPT parameters of the affected string are automatically adjusted, and the generating capacity of the system is improved.
Owner:SUZHOU NEW RAYMOND IOT TECH CO LTD

Calculation management and control system of power plant secondary screen cabinet holeless passive intelligent lockset

The invention discloses a calculation management and control system for a power plant secondary screen cabinet holeless passive intelligent lock, and the system comprises a holeless passive intelligent lock terminal which is disposed on a secondary screen cabinet door, has no mechanical key hole on the surface, achieves the non-contact power taking through a wireless induction power supply module, integrates a spring bolt position sensor, a vibration sensor and an encryption communication chip, and is connected with a power supply module. The acquisition module is used for acquiring lock state data and encrypting interaction; and the edge computing node is connected with the intelligent lock through wireless / wired communication. The calculation management and control system of the power plant secondary screen cabinet holeless passive intelligent lockset is reasonable in structure, the lockset adopts a magnetic type holeless design, the surface of the lockset is free of a mechanical key hole, the lock picking risk possibly caused by the mechanical key hole is avoided, the possibility of illegal opening is greatly reduced, the safety of the secondary screen cabinet is guaranteed from the physical level, and the safety of the secondary screen cabinet is improved through graded early warning. Potential security threats can be found and processed in time, the security response capability of the system is improved, and the method is worthy of popularization.
Owner:贵州北盘江电力股份有限公司 +1

Method and system for measuring variable quantity of electric field

The invention provides an electric field variation measuring method and system. The method comprises the following steps: installing a differential electric field sensor in an electric field variation to-be-measured area; collecting and preprocessing electric field change data of the electric field change quantity to-be-measured area based on a differential electric field sensor; based on the preprocessed electric field change data, an electric field change quantity distribution model is established, and a data analysis result is obtained; and generating an electric field variation monitoring report based on a data analysis result. The system comprises a differential electric field sensing module which is used for capturing an electric field change signal in an electric field change quantity to-be-measured area by adopting a differential electric field sensor; the high-precision data processing unit is used for receiving and preprocessing the electric field change signal to obtain electric field change data; the remote communication module is used for realizing real-time remote transmission of electric field change data by adopting a low-power wide area network technology or a wired communication mode; and the intelligent analysis platform is used for receiving the electric field change data, performing comprehensive analysis and generating an electric field change quantity monitoring report.
Owner:NAT SPACE SCI CENT CAS

Electric shaver with imaging capability

System and method for improving the shaving experience by providing improved visibility of the skin shaving area. A digital camera is integrated with the electric shaver for close image capturing of shaving area, and displaying it on a display unit. The display unit can be integral part of the electric shaver casing, or housed in a separated device which receives the image via a communication channel. The communication channel can be wireless (using radio, audio or light) or wired, such as dedicated cabling or using powerline communication. A light source is used to better illuminate the shaving area. Video compression and digital image processing techniques are used for providing for improved shaving results. The wired communication medium can simultaneously be used also for carrying power from the electric shaver assembly to the display unit, or from the display unit to the electric shaver.
Owner:MAY PATENTS LTD

Edge emergency lighting control network system based on hierarchical bus domain

The invention discloses an edge emergency lighting control network system based on a hierarchical bus domain, which relates to the technical field of emergency lighting and mainly comprises a hybrid topology network, a plurality of wired communication links are constructed by a host, a main gateway, a sub-gateway and sub-equipment in a wired connection mode; the link management module is configured to switch a wired communication link based on a user demand; and the dynamic routing module is configured to start a corresponding single standby wireless link to establish standby communication connection in response to detection of disconnection of the wired communication link between any communication node pair, and control the sub-equipment to start an emergency ad hoc network mode in response to detection of disconnection of both the wired communication link and the single standby wireless link to establish standby communication connection. And transmitting the data to the host through the adjacent normal wired communication link by performing multi-hop wireless relay communication with the adjacent sub-equipment. According to the invention, the problems of inflexible deployment and high cost of a traditional mode are solved, and the survival and reliability of the system in an emergency state are ensured.
Owner:NINGBO RONTEK ELECTRONIC CO LTD

Photovoltaic module management system based on wireless communication

The invention provides a photovoltaic module management system based on wireless communication, and the system comprises a plurality of photovoltaic modules, the interior of each photovoltaic module is integrated with an Internet of Things communication module, and the operation data of the corresponding photovoltaic module are collected through the Internet of Things communication module; the access point is in wireless connection with the Internet of Things communication module of each photovoltaic module so as to manage data acquired by each Internet of Things communication module; and the cloud server is connected with the access point so as to receive the operation data of the photovoltaic module or send a control instruction to the photovoltaic module. Wired communication of a cable is replaced by wireless communication, so that the cost is saved. And meanwhile, the power station cloud platform control center controls photovoltaic module controllers such as a turn-off device and an optimizer, the working mode of the photovoltaic module is optimized, and the working efficiency of solar photovoltaic is improved.
Owner:CHONGQING GIGACHIP TECH CO LTD

Multifunctional intelligent controller based on real-time parameters

The invention discloses a multifunctional intelligent controller based on real-time parameters, which belongs to the technical field of instrument intelligent control and consists of a core processing unit, a multi-sensor interface module, a communication module, a remote maintenance module and a power management module. The core processing unit is integrated with a high-performance microprocessor and a real-time operating system to realize multi-task scheduling of data acquisition, processing, storage and the like; the multi-sensor interface module dynamically matches sensor types to guarantee stable connection; the communication module supports various wireless and wired communication, so that remote maintenance and OTA upgrading are facilitated; the remote maintenance module constructs a two-way communication link based on the cloud platform to ensure data security; the power management module adopts dual-mode power supply, a detachable structure realizes mode switching, and portability and stability are both considered. The controller can be compatible with various instruments, supports multi-parameter synchronous measurement, achieves automatic calibration, effectively solves the problems of an existing instrument controller, and is widely applied to the fields of industrial automation, instrument monitoring and the like.
Owner:BEIJING DSD ENVIRONTECH CO LTD

A method for enhanced transmission of radio broadcast service messages

The application provides a wireless broadcast service message enhanced transmission method, which comprises the following steps: S1, connecting a broadcast service server and at least one first broadcast service client to a switch network subsystem in wired communication; the switch network subsystem is in communication connection with a Wi-Fi subsystem; the Wi-Fi subsystem is in wireless communication connection with at least one second broadcast service client; S2, presetting the Wi-Fi subsystem; S3, when a broadcast service client is interested in a video, a user feeds back an IP address of the broadcast service client which needs to receive the video; S4, performing legality check on the minimum transmission rate of the at least one first broadcast service client and / or the at least one second broadcast service client; and S5, transmitting by the Wi-Fi subsystem according to the parameters preset in step S2. According to the requirements of different service clients, different processing procedures can be executed correspondingly, so that the requirements of real-time video transmission can be met.
Owner:武汉迈威通信股份有限公司

Communication module and wireless test system and method for battery

The present application provides a communication module and a wireless test system and test method for a battery. The communication module includes a wireless communication interface and a wired communication interface. The communication module is in wireless and is connected to a battery under test through the wired communication interface. The communication module is configured to receive instruction data sent by the test terminal, and send a test instruction corresponding to the instruction data to the battery under test; and receive a corresponding battery parameter generated according to the test instruction and sent by the battery under test, and send, to the test terminal, test data corresponding to the battery parameter returned by the battery under test.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Dangerous chemical leakage intelligent early warning system based on multi-source sensor fusion

The invention discloses a dangerous chemical leakage intelligent early warning system based on multi-source sensor fusion. The system comprises a data acquisition layer, a data transmission layer, a data processing layer and an early warning layer user interface layer. The data acquisition layer is provided with a plurality of sensors to acquire relevant data of dangerous chemicals in real time; the data transmission layer adopts a mode of combining a wireless communication technology and a wired communication technology to ensure that data is safely transmitted to the central monitoring platform; the data processing layer cleans, fuses and analyzes the data, improves the accuracy and reliability of the data by using a multi-sensor fusion algorithm and a machine learning algorithm, and evaluates the leakage risk; the early warning layer generates an early warning signal according to a risk assessment result, and notifies related personnel in multiple modes; and the user interface layer provides a visual operation interface and a data display platform, so that a user can make decisions and manage conveniently. According to the system, the early warning accuracy is improved, real-time monitoring is realized, the management efficiency is improved, the safety is enhanced, safety accidents are effectively prevented, and the personnel and property safety is guaranteed.
Owner:叶积秀

Charging device and system

A charging device is connected to an external device by a power line and charges an electric vehicle. The charging device includes: a communicator that obtains a connection notification signal from the electric vehicle by wired communication, the connection notification signal indicating that the electric vehicle and the charging device are connected; and a converter that converts the connection notification signal obtained into a signal format compliant with a communication standard of first power line communication performed over the power line to obtain a converted connection notification signal, and outputs the converted connection notification signal to the external device by the first power line communication. The wired communication is communication different from the first power line communication.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Node complementary wireless networking communication system applied to urban rail transit power supply management system

The invention relates to a node complementation wireless networking communication system applied to an urban rail transit power management system, and aims to solve the problems that a traditional wired communication mode is complex in wiring and poor in expansibility, and a conventional wireless technology is insufficient in reliability in a complex electromagnetic environment of rail transit. According to the system, a wireless communication network with self-organizing and self-repairing characteristics is constructed through an innovative distributed network architecture and an intelligent routing technology, and the system can adapt to communication requirements in a special environment of rail transit. The system mainly comprises five functional modules: a network topology management module adopts a distributed self-organizing architecture, realizes automatic discovery and dynamic networking of nodes, and supports role conversion and elastic expansion; the intelligent routing optimization module adopts an improved dynamic routing algorithm to realize multi-path transmission and self-adaptive modulation, so that the anti-interference capability is remarkably improved; the protocol adaptation conversion module performs wireless optimization on industrial protocols such as Modbus, supports multi-protocol conversion, and solves the problem of equipment compatibility; the network self-healing module provides rapid fault detection and switching capability within 50ms, and ensures the service continuity; the safety management module realizes bidirectional authentication and end-to-end encryption, and meets the high safety requirement of rail transit. In a word, the system remarkably improves the communication reliability of the urban rail transit power supply management system, reduces the construction and maintenance cost, and provides reliable technical support for intelligent operation and maintenance.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Intelligent online monitoring system for soil greenhouse gas emission

The invention relates to the technical field of environment monitoring, and discloses a soil greenhouse gas emission intelligent online monitoring system, which comprises a sensor module, a data acquisition module I, a data acquisition module II, a communication module, a power supply control module and a data processing module, the sensor module is positioned in a sensor arranged in the detection box and is used for monitoring the concentration of greenhouse gas in the soil covered by the detection box in real time. According to the intelligent online monitoring system for soil greenhouse gas emission, the communication module has a wireless communication function and a wired communication function, and through alternate data transmission between a cable and Bluetooth, a soil part covered by the detection box can perform real-time and continuous monitoring on soil greenhouse gas in cooperation with detection equipment of the sensor module; dynamic change of emission is mastered in time, more accurate data support is provided for scientific research and environment management, meanwhile, remote data transmission and monitoring are achieved through the communication module, and a user can know the soil greenhouse gas emission condition anytime and anywhere conveniently.
Owner:GANSU AGRI UNIV

Bridge node for serial communication in a daisy chain

The present disclosure relates to a serial communication network (400), including: a plurality of network nodes (402) including a primary node (404) and one or more secondary nodes (406a-406d) connected in a daisy chain configuration and configured to communicate according to a first wired communication protocol for serial communication, wherein the first wired communication protocol is the Open System Protocol; wherein at least one of the network nodes (402) is configured to act as bridge node (420), wherein the bridge node (420) includes communication circuitry configured to: enable a communicative coupling with a network node (402) and with an external device, receive from the network node (402) a first message according to the first wired communication protocol, and embed data from the first message into a second message configured according to a second wired communication protocol; and / or receive from the external device a second message configured according to the second wired communication protocol, and embed data from the second message into a first message configured according to the first wired communication protocol, wherein the second wired communication protocol is different from the first wired communication protocol.
Owner:AMS OSRAM INT GMBH

Apparatuses and methods for detecting characteristics of one or more tether devices

Aspects of the subject disclosure may include, for example, obtaining input data, processing the input data to generate output data, the output data including an identification of one or more characteristics associated with tethered communications involving at least a first user equipment, and based on the identification of the one or more characteristics, causing an action to be taken. Other embodiments are disclosed.
Owner:AT&T INTELLECTUAL PROPERTY I L P

Redundant satellite backhaul using a secondary cellular network core

Various arrangements for providing redundant backhaul for a cellular network are provided herein. A secondary cellular network core can be in communication with a primary cellular network core. The secondary cellular network core can be configured such that components of the secondary cellular network core are optimized for satellite communications, while the components of the primary cellular network core are optimized for wired communications. In response to a determination that the primary backhaul connection is not available for accessing the primary cellular network core, cellular network services can instead be provided via the satellite backhaul connection and the secondary cellular network core.
Owner:BOOST SUBSCRIBERCO LLC

U-turn signal for a moving vehicle

In at least one embodiment there is a moving vehicle turn signal comprising a housing, a light, a switch to selectively turn on or off the light, a display indicating a turn arrow for indicating a U-turn; and a controller for activating the switch for selectively switching on the light. In at least one embodiment there is a housing that has a backing and sides which are reflective and a front surface that is at least partially translucent. In at least one embodiment the housing is substantially rectangular in shape. In at least one embodiment the light is a LED light. In at least one embodiment the controller is in wired communication with the switch. In at least one embodiment the controller is in wireless communication with the switch. In at least one embodiment the display is formed from the light positioned in a substantially J-shape.
Owner:BRINK VIVIANNA F

Method and system for efficient configuration of time-sensitive network based on hardware acceleration

The present invention discloses a method and system for efficient configuration of a time-sensitive network based on hardware acceleration, pertaining to the field of wired communication networking technology. The method includes an acquisition step, a preprocessing step, a scheduling step, a generation step and a deployment step. The scheduling step, according to an operating state of a scheduling engine, based on attribute information of to-be-configured data streams, selects a time slot length, calculates a hyperperiod, depending on a size of the hyperperiod, carries out any of hyperperiod based parallel scheduling or conflict-group based parallel scheduling, obtaining a scheduling result, and thereby generates and deploys a configuration scheme to network devices. The present invention is able to, based on on-site network and terminal device conditions, derive global deterministic scheduling and configuration schemes and enables rapid distribution and deployment.
Owner:SHANGHAI JIAOTONG UNIV

Universal dual-mode adapter kit and medical monitor

The utility model discloses a universal dual-mode adapter kit and a medical monitor. The universal dual-mode switching kit is configured to adapt to various different medical monitors, and is configured to work in the following two modes: (1) a wired mode: in the wired mode, a probe is in communication connection with a digital signal input interface of a switching-switching module in a wired mode, and in the wired mode, the probe is in communication connection with the digital signal input interface of the switching-switching module in a wired mode; and (2) a wireless mode, in the wireless mode, the probe is in butt joint with the wireless digital transmission module to form communication connection, and the wireless digital transmission module is configured to be in wireless connection with the conversion-switching module.
Owner:PRIMANOVA LAB (SHENZHEN) LTD

Communication control main control board

A communication control main control board disclosed by the present invention comprises a board body, a power supply module, a main control module, a communication module and a signal control module, the communication module comprises a wired communication sub-module and a wireless communication sub-module, the signal control module comprises an input control unit and an output control unit, and the main control module is used for generating a first control instruction. The communication module is used for switching a communication mode between the communication control main control board and external communication equipment according to a first control instruction, the signal control module is used for controlling input and output of a communication signal according to the first control instruction, and the main control module comprises a fault self-diagnosis sub-module; and the alarm module is used for detecting working states of the power supply module, the communication module and the signal control module and generating corresponding alarm information. The technical scheme of the invention has multiple communication functions, can be compatible with the interconnection requirements of heterogeneous devices, realizes effective control of multiple input and output devices, is beneficial to finding abnormal working states in time, and is beneficial to improving stability and reliability.
Owner:GUANGZHOU GUOXUN ROBOT TECH CO LTD

Distribution automation master station self-healing system suitable for complex scene

The invention belongs to the technical field of power distribution, and particularly relates to a power distribution automation master station self-healing system suitable for a complex scene, which comprises a sensing layer, a network layer and an application layer, the sensing layer establishes a communication connection relation with the application layer based on the network layer, the sensing layer comprises a distributed intelligent terminal, a PMU and an intelligent electric meter, and the distributed intelligent terminal, the PMU and the intelligent electric meter collect states of main and auxiliary equipment in real time; the network layer comprises a wireless private network and wired communication and is used for data interaction between the sensing layer and the application layer; the application layer comprises a fault diagnosis module, a recovery decision module, a simulation verification module and an edge computing node. According to the scheme, a self-healing system is constructed through'multi-agent collaborative architecture + hybrid intelligent algorithm + edge computing ', and the core innovation points and effects are as follows: accurate fault diagnosis, shortening of fault recovery time, robustness enhancement and global optimization operation; and the technology is a multi-objective optimization model considering distributed power supply prediction, load characteristics and network constraints.
Owner:ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD

Wired communication network fault prediction system

The invention relates to the field of communication network fault prediction, in particular to a wired communication network fault prediction system, which comprises a data acquisition module used for acquiring first electromagnetic interference influence information of each electromagnetic source; the data preprocessing module is used for preprocessing the first electromagnetic interference influence information to generate second electromagnetic interference influence information; the data correction module is used for calculating the induced electromotive force of each position of the target section according to the mutual influence between the electromagnetic sources at different positions; according to the method, when whether the cable of the wired communication network breaks down is calculated, the possibility that due to the fact that the distances between different test sections and electromagnetic sources are different, the values of induced currents generated by the different test sections are different, and the possibility that the cable of the wired communication network breaks down is influenced is considered; compared with other wired communication network fault prediction methods, the method is higher in prediction precision, and is convenient for workers to carry out maintenance and other operations according to the method.
Owner:ZHONGTONG SERVICE WANGYING TECH CO LTD

Control panel and control monitoring system

To reduce the labor, time and cost required for wiring construction.SOLUTION: A control panel 1a includes a controller 100 that performs wired communication with a sensor or a device to be controlled, and a wireless communication device that wirelessly transmits data received via wired communication from the controller 100 to an external central monitoring device 500, and transmits data received wirelessly from the central monitoring device 500 to the controller 100 via wired communication.SELECTED DRAWING: Figure 1
Owner:AZBIL CORP

A wireless array inclinometer system and method

The present invention discloses a wireless array inclinometer system and method, which belongs to the field of deformation monitoring technology. In view of the problems that the existing inclinometers have low applicability and limitations in field use, a single inclinometer is used to measure the horizontal displacement of the position, and multiple inclinometers are connected through a universal joint to form an array wireless inclinometer device. Adjacent inclinometers are connected through a wireless chain network. Multiple array wireless inclinometer devices are connected, and the measurement data is transmitted to a cloud platform through a wireless gateway. Compared with traditional wired communications, the use of wireless communication can avoid system instability caused by lightning strikes, unstable power grids, and physical disconnections. The wireless chain network performs single hops or multi-hops, and the abnormality of one device does not affect the overall signal acquisition, thereby improving the stability and anti-interference ability of the entire system. The wireless array inclinometer has high measurement accuracy and can detect the lateral displacement of rocks, soil layers and buildings.
Owner:SHANXI ZHONGGU TRADE

System and method for GNSS indoor positioning

The invention belongs to the technical field of GNSS positioning, and particularly relates to a system and a method for GNSS indoor positioning, the system comprises at least one GNSS positioning gateway, at least one POI, at least one group of indoor wired communication links and an indoor positioning terminal.The GNSS positioning gateway is used for receiving a plurality of satellite positioning signals through an outdoor GNSS antenna and transmitting the satellite positioning signals to the indoor positioning terminal; the satellite positioning signals of different frequency bands are output through different corresponding output interfaces; the different POIs are used for receiving satellite positioning signals of different frequency bands through the input interfaces respectively, coupling the satellite positioning signals of all the frequency bands and then transmitting the coupled satellite positioning signals through respective indoor wired communication links; the indoor wired communication link is composed of a feeder line, an indoor distribution antenna and / or a leaky cable, and is used for realizing differential propagation paths of satellite positioning signals of different frequency bands; and the indoor positioning terminal is used for acquiring the multi-band satellite positioning signals through the differentiated propagation paths and carrying out positioning calculation based on the multi-band signal characteristics. According to the invention, the positioning convergence rate is improved.
Owner:CHINA TOWER CO LTD

Communication device and communication method based on underwater blue-green light connector

The invention belongs to the technical field of communication, and discloses a communication device based on an underwater blue-green light connector, which is composed of a blue light connector and a green light connector, adopts laser as a communication carrier, loads binary data flow onto the laser and sends the binary data flow to a PMT (photomultiplier); and the PMT converts and demodulates the received laser signal and outputs the converted and demodulated laser signal to a using terminal. Compared with wired communication, the device has the advantages that the AUV can move more flexibly in a larger range; compared with sound communication, higher-speed transmission can be carried out, and the problem of communication of the AUV under the short-distance condition is solved; compared with traditional laser communication, the device is high in stability, optical divergence design and high-dynamic-range gain design are added into the device, and the stability of a channel can be kept under the condition of water turbulence.
Owner:WUHAN LIUBO PHOTOELECTRIC TECH CO LTD