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1.发明授权公开(公告)号：US10154445B2
公开(公告)日：2018-12-11
申请号：US15527633
申请日：2014-12-30
Abstract: The present invention provides an AP handover method based on double wireless network interface cards. A mobile terminal actively scans the signal strength of an AP, compares the scanned signal strength with the signal strength of a currently accessed AP, and if the signal strength is greater than the signal strength of the current AP, starts handover; otherwise, continuously scans till the handover succeeds. To reduce the handover delay and in accordance with the characteristic that the moving paths are basically fixed in industrial application scenarios, the present invention provides a pre-learning mechanism, that is, before formal application, information such as the location of the AP and the handover sequence in the application scenario is learned and stored in a terminal node, so that specific scanning and handover can be implemented in formal application. The present invention solves the problem of rapid AP handover in the industrial mobile network scenario, the double wireless network interface cards are used to achieve handover without interruption, and the pre-learning mechanism is used in specific industrial application scenarios, so the scanning delay is further reduced.
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公开(公告)号：US10110517B2
公开(公告)日：2018-10-23
申请号：US14902459
申请日：2014-12-30
IPC: G06F15/177 , H04L12/931 , H04L12/24 , H04L29/06 , H04L12/851 , H04L12/891 , H04L12/861
Abstract: The present invention discloses a method and system for realizing Open vSwitch that supports 802.1p. The method comprises: a priority mode configuration stage: the switch receiving a priority configuration statement of a user and parsing the configuration statement; a configuration storage stage: storing the parsed configuration information into a switch database; and a priority-based data forwarding stage: the switch putting a received data packet into a corresponding priority queue according to said configuration information and a flow table so as to forward the data packet. The system comprises a configuration module, a configuration information storage module and a priority-based forwarding module, wherein the data priority-based forwarding module comprises a configuration reading unit, a traffic control setting unit, a flow table storage unit, a data packet parsing unit, a flow table matching unit, a flow table executing unit, a scheduling unit, priority queues, a sending unit, etc.
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3.发明授权公开(公告)号：US09797835B2
公开(公告)日：2017-10-24
申请号：US14898600
申请日：2013-11-28
Inventor： Lanxiang Sun , Haibin Yu , Yong Xin , Lifeng Qi , Yang Li , Zhibo Cong
CPC classification number: G01N21/63 , G01B11/14 , G01N21/21 , G01N21/718 , G01N21/8507 , G01N33/206 , G01N2021/695 , G01N2201/06113 , G01N2201/0636 , G01N2201/0683 , G01N2201/088
Abstract: An in-situ on-line detection device and detection method for a long-distance metallurgical liquid metal component. The detection device comprises a front-end high-temperature resistant probe, a middle-end optical sensing device and a back-end control platform, wherein the head of the front-end high-temperature resistant probe is placed in a liquid metal, the tail thereof is coaxially connected to the middle-end optical sensing device, and an optical window is arranged in the connection position; and the middle-end optical sensing device is connected to the back-end control platform through a signal line. The detection device and detection method can provide a timely and valid message for quality control and a melting end, so that the detection time is greatly shortened, the detection distance can he adjusted extensively, the measurement result is accurate, and it can be achieved to measure components that are difficult to measure such as carbon, sulfur, phosphorous, etc.
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公开(公告)号：US20150244486A1
公开(公告)日：2015-08-27
申请号：US14427210
申请日：2013-01-10
Inventor： Wei Liang , Shuai Liu , Xiaoling Zhang , Yutuo Yang , Haibin Yu
CPC classification number: H04J3/1694 , H04B7/2656 , H04L5/0055 , H04W16/18 , H04W40/244 , H04W48/08 , H04W72/0446
Abstract: The present invention relates to a TDMA access method and device based on multiple access points. According to the problems that the existing method cannot simultaneously satisfy the demands of timeliness and reliability in actual industrial application and has low resource utilization rate, the present invention takes full consideration of the transmission characteristics and industrial automation application characteristics of wireless networks, and provides a TDMA access method and device based on multiple access points. The main ideas of the method in the present invention are: the multi-access point redundant communication manner is adopted to improve system reliability, beacon frames of multiple access points are utilized to perform time synchronization so as to improve synchronization precision, confirmation messages are fed back with regard to reliable access points to reduce the number of retransmissions, and a modularized multi-access point device design method is adopted to lower the difficulties of device maintenance and management.
Abstract translation: 本发明涉及一种基于多个接入点的TDMA接入方法和装置。 根据现有方法不能同时满足实际工业应用的及时性和可靠性要求，资源利用率低的问题，本发明充分考虑了无线网络的传输特性和工业自动化应用特点，并提供了一种 TDMA接入方法和基于多个接入点的设备。 本发明方法的主要思想是采用多接入点冗余通信方式提高系统可靠性，利用多个接入点的信标帧进行时间同步，提高同步精度，提供确认消息 关于可靠接入点，减少重传次数，采用模块化多接入点设备设计方法，降低设备维护管理的难度。
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公开(公告)号：US09780898B2
公开(公告)日：2017-10-03
申请号：US14427210
申请日：2013-01-10
Inventor： Wei Liang , Shuai Liu , Xiaoling Zhang , Yutuo Yang , Haibin Yu
CPC classification number: H04J3/1694 , H04B7/2656 , H04L5/0055 , H04W16/18 , H04W40/244 , H04W48/08 , H04W72/0446
Abstract: The present invention relates to a TDMA access method and device based on multiple access points. According to the problems that the existing method cannot simultaneously satisfy the demands of timeliness and reliability in actual industrial application and has low resource utilization rate, the present invention takes full consideration of the transmission characteristics and industrial automation application characteristics of wireless networks, and provides a TDMA access method and device based on multiple access points. The main ideas of the method in the present invention are: the multi-access point redundant communication manner is adopted to improve system reliability, beacon frames of multiple access points are utilized to perform time synchronization so as to improve synchronization precision, confirmation messages are fed back with regard to reliable access points to reduce the number of retransmissions, and a modularized multi-access point device design method is adopted to lower the difficulties of device maintenance and management.
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Patent Agency Ranking
公开(公告)号：US10383056B2
公开(公告)日：2019-08-13
申请号：US14900558
申请日：2014-08-27
Applicant: SHENYANG INSTITUTE OF AUTOMATION OF THE CHINESE ACADEMY OF SCIENCES , SHENYANG INSTITUTE OF AUTOMATION. GUANGZHOU. CHINESE ACADEMY OF SCIENCE
Inventor： Haibin Yu , Peng Zeng , Jinchao Xiao , Chuanzhi Zang , Zhongwen Li
Abstract: Low power consumption networking method for 802.15.4e wireless device “WD” taking 4-20 mA loop power, including: a “WD” taking loop power; constructing a WD oriented to ultra-low power consumption; the WD implementing unidirectional time synchronization based on preceding wireless network; on basis of preceding time synchronization, completing neighbor discovery; the WD interacting with the wireless network; and pausing a preceding procedure according to a power monitoring result of an energy storage monitoring module. Messages are detected through continuously switching channels to implement quick and energy-saving unidirectional time synchronization, replaces listening on beacon frames with listening on common messages on a time synchronization basis, improves a listening sequence for neighbor discovery, enables listening only at a time slot where the beacon frames may appear and sleeps at other times, saving channel search time, and also reducing energy consumption generated in neighbor discovery, thus reducing time and energy consumption of entire network establishment.
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公开(公告)号：US10262262B2
公开(公告)日：2019-04-16
申请号：US14778406
申请日：2013-12-20
Abstract: The present invention relates to the technical field of terminal devices of the Internet of Things, more specifically to a semantic method for terminal devices of the Internet of Things capable of analyzing the application characteristics of terminal devices of the Internet of Things, setting down the rules for building ontology base; analyzing and building initial ontology base by using the ontology base building tool; pre-processing information from network and sensors; collecting information uploaded by sensors, updating the initial ontology base, and expanding the ontology base by collecting information searched by network. The method establishes program plan by object-oriented mode, analyzes implementing results by using existing test data or simulated data, and realizes domain updating and expansion of sensor ontology according to specific applications. The whole development and evolution of sensor ontology is increasing gradually in a spiral form.
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8.发明申请公开(公告)号：US20170339615A1
公开(公告)日：2017-11-23
申请号：US15527633
申请日：2014-12-30
CPC classification number: H04W36/18 , H04W36/08 , H04W36/245 , H04W36/30 , H04W84/12
Abstract: The present invention provides an AP handover method based on double wireless network interface cards. A mobile terminal actively scans the signal strength of an AP, compares the scanned signal strength with the signal strength of a currently accessed AP, and if the signal strength is greater than the signal strength of the current AP, starts handover; otherwise, continuously scans till the handover succeeds. To reduce the handover delay and in accordance with the characteristic that the moving paths are basically fixed in industrial application scenarios, the present invention provides a pre-learning mechanism, that is, before formal application, information such as the location of the AP and the handover sequence in the application scenario is learned and stored in a terminal node, so that specific scanning and handover can be implemented in formal application. The present invention solves the problem of rapid AP handover in the industrial mobile network scenario, the double wireless network interface cards are used to achieve handover without interruption, and the pre-learning mechanism is used in specific industrial application scenarios, so the scanning delay is further reduced.
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公开(公告)号：US09979563B2
公开(公告)日：2018-05-22
申请号：US14898511
申请日：2014-10-22
Inventor： Haibin Yu , Wei Liang , Xiaoling Zhang , Chaofan Ma
CPC classification number: H04L12/6418 , H04L2012/6459 , H04W4/70 , H04W52/0212 , Y02D70/00 , Y02D70/1222 , Y02D70/146
Abstract: The present invention relates to wireless network technologies, and particularly to a chain-type wireless sensor network-oriented hybrid media access control (MAC) method. The present invention fully considers features of a chained or linear topology of a wireless sensor network applied in power transmission line monitoring and the like, adopts different access policies at different periods of the network, and proposes a method of time division access control Pipelined TDMA during busy periods and contention access control S-XMAC during idle periods. During busy periods, a pipelined scheduling transmission method is used to avoid the problem of hidden terminals so as to improve transmission reliability and resource utilization. During idle periods, different MAC parameters are set for cluster head members and ordinary cluster members, so that the cluster head members can respond to requests in a more timely manner, and meanwhile, the ordinary cluster members save energy as much as possible, thereby meeting requirements for network real-time quality of the application system while saving energy of the network.
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公开(公告)号：US09599699B2
公开(公告)日：2017-03-21
申请号：US14909244
申请日：2014-08-27
Inventor： Peng Zeng , Jinchao Xiao , Jie He , Haibin Yu
CPC classification number: G01S5/14 , G01S1/042 , G01S1/08 , G01S5/021 , G01S5/0226 , G01S5/0252 , G01S11/02 , G01S11/06 , H04B1/713
Abstract: An RSSI positioning method based on frequency-hopping spread spectrum technology, comprising: calibration stage: measuring the RSSI values of a plurality of channels at fixed points, and recording and calculating the ranging parameters in an RSSI ranging model; system preparation: deploying a positioning anchor node, and realizing synchronization between a target node and the anchor node; conducting communication on the target node by respectively utilizing a plurality of channels to obtain the RSSI values; signal processing stage: processing the RSSI into signal strength amplitude and performing optimization; and positioning stage: calculating a distance and the target node position on a positioning server according to each of the signal strength. The present invention solves the problem that low RSSI positioning precision cannot satisfy the actual requirements because a traditional RSSI positioning method is limited to factors such as multipath signal transmission, co-channel interference, obstacle interference and low coordinate calculation precision of a trilateration method.
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