WO2021114188A1 - 一种基于无线能量传输驱动的目标被动追踪系统和方法 - Google Patents
一种基于无线能量传输驱动的目标被动追踪系统和方法 Download PDFInfo
- Publication number
- WO2021114188A1 WO2021114188A1 PCT/CN2019/124927 CN2019124927W WO2021114188A1 WO 2021114188 A1 WO2021114188 A1 WO 2021114188A1 CN 2019124927 W CN2019124927 W CN 2019124927W WO 2021114188 A1 WO2021114188 A1 WO 2021114188A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- passive
- passive anchor
- node
- target
- anchor node
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Definitions
- the present invention relates to the field of communication technology, in particular to a target passive tracking system and method based on wireless energy transmission drive.
- IoT Internet of Things
- a positioning system based on the Internet of Things (IoT) extending its life cycle is a key issue.
- IoT devices can be deployed in such a vast area on a large scale and require sufficient energy to maintain a long service life.
- researchers have proposed many energy-saving solutions.
- the battery will inevitably be exhausted eventually.
- the battery can be replaced or recharged, it is inconvenient, expensive and even dangerous for a network deployed on a large scale in a harsh environment.
- the current energy supply technology for the Internet of Things is mainly divided into two aspects, one is energy-saving technology, and the other is the use of wireless charging technology.
- energy-saving technologies for the Internet of Things
- wireless charging technology to charge IoT devices, such as magnetic induction technology, magnetic coupling technology, and microwave wireless charging technology.
- wireless charging technology directly for IoT positioning systems in the existing technology.
- the purpose of the present invention is to overcome the above-mentioned drawbacks of the prior art, and provide a target passive tracking system and method driven by wireless energy transmission, which can simultaneously control the accuracy of system positioning and the overall power consumption.
- a target passive tracking system driven by wireless energy transmission includes: an energy transmitting device, multiple passive anchor nodes and target nodes, wherein the energy transmitting device contains multiple antennas and has wireless energy transmission and feedback data receiving functions; the target node periodically broadcasts ranging Signal; the passive anchor node receives the wireless energy sent by the energy transmitting device as a power supply, and captures the ranging signal sent by the target node to be tracked, and converts the ranging signal sent by the target node into the ranging information back To the energy transmitting device, and then the energy transmitting device locates the position of the target node based on the ranging information.
- a method for passive tracking of targets driven by wireless energy transmission is provided for the above-mentioned system provided by the present invention.
- the method includes the following steps: designing a multi-objective optimization problem of joint system positioning accuracy and energy consumption; By solving the optimization problem, the passive anchor nodes participating in the positioning are selected and the received power of the selected passive anchor nodes is controlled and distributed.
- the present invention has the advantages that it can continuously provide energy for the wireless Internet of Things positioning system and solve the battery bottleneck problem; the power distribution technology provided by the present invention can adjust the energy transmitting device (E-AP)
- the signal power vector can control the accuracy of system positioning and overall power consumption, and realize the on-demand distribution of power.
- Fig. 1 is an architecture diagram of a target passive tracking system driven by wireless energy transmission according to the present invention.
- the present invention provides a target passive tracking system driven by wireless energy transmission, which is an IoT positioning system that supports wireless charging.
- the system includes an energy transmitting device (E-AP) 110 and multiple passives.
- Anchor node 120 and target node 130 also referred to as target or tracking target).
- the energy transmitting device 110 includes multiple antennas and has wireless energy transmission and feedback data receiving functions.
- the energy transmitting device 110 transmits energy to the passive anchor node 120.
- the passive anchor node 120 also called a reference node, has a known or measurable position.
- the passive anchor node 120 is a wireless node of the Internet of Things that does not contain any power or battery equipment.
- the passive anchor node 120 receives the wireless energy sent by the E-AP as a power source, and at the same time captures the signal sent by the target node 130, and combines the target The signal sent by the node 130 is converted into ranging information and sent back to the E-AP.
- the E-AP receives signals from multiple passive anchor nodes 120 and estimates the location of the target node 130 in real time through a specific positioning algorithm.
- the position of the target node 130 cannot be directly measured, and the position of the target node needs to be estimated based on the position of the passive anchor node 120. Therefore, the positioning method of the target node is passive positioning.
- the target node 130 is, for example, a terminal or other types of wireless sensor nodes.
- the wireless signal transmission (including energy and ranging signal) is divided into two parts.
- the first part is the wireless energy transmission part, and the second part is the wireless ranging signal transmission part.
- the passive anchor node After the passive anchor node obtains the energy sent by the E-AP, it will capture the ranging signal sent by the target node and convert the ranging signal into ranging information (such as the distance between the anchor node and the target node ) Is sent back to the E-AP, and the E-AP determines the location of the target node based on this information.
- the periodic broadcast ranging signal of the target node such as RSS signal (received signal strength signal)
- RSS signal received signal strength signal
- a positioning method in the prior art can be used for positioning, such as a trilateral positioning method.
- the specific positioning process will not be repeated in the present invention. The following will focus on specific solutions to improve positioning accuracy and reduce system energy consumption.
- the next Cramero is used as the measurement standard of the positioning accuracy of the system.
- the next Cramero is the inverse matrix of the Fisher matrix.
- the cost in the embodiment of the present invention is the inverse matrix of the Fisher matrix.
- the Hill matrix can be expressed as:
- ⁇ is the direction angle from the nth passive anchor node to the target node
- ⁇ is the spatial attenuation factor
- d n represents the target node to the actual distance passive anchor nodes
- P tar represents a passive anchor node receives wireless energy minima threshold, when the received power is less than the threshold, then the anchor node does not work, otherwise it is Activation
- a n is a step function:
- c n is the channel attenuation coefficient
- the present invention is designed to solve the following problems:
- P 0 is the total power of the transmitted signal
- I the variance of the background noise.
- problem one can be extended to a multi-objective optimization problem to perform joint optimization of positioning accuracy and power consumption, that is, problem two.
- the solution of problem two is divided into two parts.
- the first step is to search for all passive anchor nodes that meet the defined conditions to achieve the best positioning accuracy.
- the second step is to calculate the energy consumption of the passive anchor nodes after determining the passive anchor nodes. The minimum value.
- Problem 3 Multi-objective optimization to improve the optimal positioning accuracy and achieve the lowest power consumption at the same time.
- each anchor node is set to 0 or 1 respectively, forming a sequence of 0, 1.
- 0 means that this node is not required to participate in the calculation
- 1 means that the anchor node will participate in the calculation.
- N -1 such combined sequences;
- the passive anchor nodes participating in the positioning can be selected and the received power of the selected passive anchor nodes can be controlled, thereby reducing the positioning accuracy while ensuring the positioning accuracy.
- the energy consumption of the entire system can be determined in the above manner and the corresponding feasible solution of r x .
- a heuristic algorithm is used to solve the problem.
- the specific steps include:
- the present invention applies wireless charging technology to the Internet of Things positioning system, and at the same time provides multi-objective optimization that can improve the optimal positioning accuracy and achieve the lowest power consumption at the same time.
- the present invention proposes an exhaustive method and a heuristic algorithm for the multi-objective optimization problem, thereby reducing the complexity of calculation and improving the positioning accuracy and the real-time performance of power on-demand distribution.
- the present invention may be a system, a method and/or a computer program product.
- the computer program product may include a computer non-transitory readable storage medium loaded with computer readable program instructions for enabling a processor to implement various aspects of the present invention.
- the computer-readable storage medium may be a tangible device that holds and stores instructions used by the instruction execution device.
- the computer-readable storage medium may include, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing, for example.
- Non-exhaustive list of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) Or flash memory), static random access memory (SRAM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory stick, floppy disk, mechanical encoding device, such as a printer with instructions stored thereon
- RAM random access memory
- ROM read-only memory
- EPROM erasable programmable read-only memory
- flash memory flash memory
- SRAM static random access memory
- CD-ROM compact disk read-only memory
- DVD digital versatile disk
- memory stick floppy disk
- mechanical encoding device such as a printer with instructions stored thereon
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
Description
Claims (10)
- 一种基于无线能量传输驱动的目标被动追踪系统,包括:能量发射装置,多个无源锚节点和目标节点,其中:所述能量发射装置含有多个天线,具有无线能量发射和反馈数据接收功能;所述目标节点周期性的广播测距信号;所述无源锚节点通过接收所述能量发射装置发送的无线能量作为供电电源,并捕捉待追踪目标节点发送的测距信号,且将目标节点发送的测距信号转化为测距信息回传至所述能量发射装置,进而由所述能量发射装置基于该测距信息定位目标节点的位置。
- 根据权利要求1所述的基于无线能量传输驱动的目标被动追踪系统,其特征在于,以系统定位精度和能耗的联合优化为目标来选择参与定位的无源锚节点并控制分配所选无源锚节点的接收功率。
- 一种基于无线能量传输驱动的目标被动追踪方法,用于权利要求1所述的系统,包括以下步骤:设计联合系统定位精度和能耗的多目标优化问题;通过求解该优化问题来选择参与定位的无源锚节点并控制分配所选无源锚节点的接收功率。
- 一种计算机可读存储介质,其上存储有计算机程序,其中,该程序被处理器执行时实现根据权利要求8所述的方法的步骤。
- 一种电子设备,包括存储器和处理器,在所述存储器上存储有能够在处理器上运行的计算机程序,其特征在于,所述处理器执行所述程序 时实现权利要求8所述的方法的步骤。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2019/124927 WO2021114188A1 (zh) | 2019-12-12 | 2019-12-12 | 一种基于无线能量传输驱动的目标被动追踪系统和方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2019/124927 WO2021114188A1 (zh) | 2019-12-12 | 2019-12-12 | 一种基于无线能量传输驱动的目标被动追踪系统和方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021114188A1 true WO2021114188A1 (zh) | 2021-06-17 |
Family
ID=76329323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2019/124927 WO2021114188A1 (zh) | 2019-12-12 | 2019-12-12 | 一种基于无线能量传输驱动的目标被动追踪系统和方法 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2021114188A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113676283A (zh) * | 2021-07-02 | 2021-11-19 | 河南大学 | 一种基于加噪机制的单锚定位隐私保护方法 |
WO2024045194A1 (zh) * | 2022-09-02 | 2024-03-07 | Oppo广东移动通信有限公司 | 一种定位方法及装置、通信设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101191832A (zh) * | 2007-12-11 | 2008-06-04 | 宁波中科集成电路设计中心有限公司 | 一种基于测距的无线传感器网络节点定位方法 |
US20160057583A1 (en) * | 2014-08-20 | 2016-02-25 | Kabushiki Kaisha Toshiba | Position estimation device |
-
2019
- 2019-12-12 WO PCT/CN2019/124927 patent/WO2021114188A1/zh active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101191832A (zh) * | 2007-12-11 | 2008-06-04 | 宁波中科集成电路设计中心有限公司 | 一种基于测距的无线传感器网络节点定位方法 |
US20160057583A1 (en) * | 2014-08-20 | 2016-02-25 | Kabushiki Kaisha Toshiba | Position estimation device |
Non-Patent Citations (1)
Title |
---|
YAPING ZHU; SONG XING; YUEYUE ZHANG; FENG YAN; LIANFENG SHEN: "Localisation algorithm with node selection under power constraint in software‐defined sensor networks", IET COMMUNICATIONS, THE INSTITUTION OF ENGINEERING AND TECHNOLOGY, GB, vol. 11, no. 13, 19 September 2017 (2017-09-19), GB, pages 2035 - 2041, XP006096733, ISSN: 1751-8628, DOI: 10.1049/iet-com.2017.0077 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113676283A (zh) * | 2021-07-02 | 2021-11-19 | 河南大学 | 一种基于加噪机制的单锚定位隐私保护方法 |
WO2024045194A1 (zh) * | 2022-09-02 | 2024-03-07 | Oppo广东移动通信有限公司 | 一种定位方法及装置、通信设备 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Lin et al. | Minimizing charging delay for directional charging | |
US10396859B1 (en) | Apparatus for wirelessly transmitting power after confirming location of receiver and method thereof | |
WO2021114188A1 (zh) | 一种基于无线能量传输驱动的目标被动追踪系统和方法 | |
Huda et al. | Wireless power transfer in wirelessly powered sensor networks: A review of recent progress | |
CN105182317A (zh) | 一种基于集中式mimo雷达搜索模式下的资源管理方法 | |
US20180146449A1 (en) | Method and system for determining a location of wireless device | |
CN109997320A (zh) | 包括天线的设备及其控制方法 | |
CN108896985B (zh) | 基于射频隐身的组网雷达多目标跟踪采样间隔控制方法 | |
Zhang et al. | A node localization approach using particle swarm optimization in wireless sensor networks | |
KR102042121B1 (ko) | 전력 수신 장치의 수신 전력을 모니터링하여 무선 전력을 전송하는 무선 전력 전송 시스템 | |
Zhou et al. | Path loss model based on cluster at 28 GHz in the indoor and outdoor environments | |
Li et al. | Review on positioning technology of wireless sensor networks | |
CN107728102A (zh) | 一种阵列传感器的波达方向估计方法 | |
CN111064286B (zh) | 一种基于无线能量传输驱动的目标被动追踪系统和方法 | |
Wei et al. | Node localization algorithm for wireless sensor networks using compressive sensing theory | |
Gautam et al. | Energy‐efficient localisation of sensor nodes in WSNs using single beacon node | |
CN113438733A (zh) | 基于5g和wifi实现室内定位的系统、方法及电子设备 | |
CN107968451B (zh) | 基于微波无线充电的效率提升方法与装置 | |
Yang et al. | A novel method for measurement points selection in access points localization | |
CN104678351A (zh) | 一种基于ZigBee技术的室内定位系统的算法 | |
Zhao et al. | Energy beamforming for cooperative localization in wireless-powered communication network | |
Yadav et al. | Probabilistic scheme for intelligent jammer localization for wireless sensor networks | |
JP2023540893A (ja) | ワイヤレス電力供給のための方法およびシステム | |
WO2021097593A1 (zh) | 一种采用无线能量收集的定位追踪系统及方法 | |
KR101547825B1 (ko) | RTT(round trip time)를 이용한 위치측위 방법 및 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19956015 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19956015 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 11/01/2023) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19956015 Country of ref document: EP Kind code of ref document: A1 |