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

IPC: H04W52/02 ,  H04W4/70

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.

公开(公告)号：US09599699B2

公开(公告)日：2017-03-21

申请号：US14909244

申请日：2014-08-27

Applicant: SHENYANG INSTITUTE OF AUTOMATION OF THE CHINESE ACADEMY OF SCIENCES

Inventor： Peng Zeng ,  Jinchao Xiao ,  Jie He ,  Haibin Yu

IPC: H04B1/00 ,  G01S5/14 ,  G01S5/02 ,  H04B1/713 ,  G01S1/04 ,  G01S1/08 ,  G01S11/02 ,  G01S11/06

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.