Bluetooth AOA indoor Positioning System Solution

时间： 2022-06-14 来源：天工测控

技术问答

Bluetooth AOA positioning is a new type of indoor positioning technology, benefiting from the introduction of the Bluetooth 5.1 standard. The Bluetooth 5.1 standard introduces the AoA (Angle-of-Arrival) feature. The AOA positioning algorithm, also called Angle-of-Arrival (AOA), is a Bluetooth positioning algorithm based on the angle of arrival of Bluetooth signals. The advantages of the Bluetooth AOA positioning algorithm are that the positioning algorithm has low communication overhead and high positioning accuracy.

The direction of arrival of the signal from the transmitting node is sensed through the array antenna, the relative azimuth or angle between the receiving node (Bluetooth AOA positioning base station) and the transmitting node (Bluetooth AOA tag) is calculated, and then the unknown node is calculated by triangulation or other methods ( The location of the Bluetooth AOA label), as shown in the figure below.

Applicable scenarios: asset tag positioning, stadium personnel positioning, nursing home positioning system;

Monitoring technology: Bluetooth arrival angle positioning calculation;

Involving software and hardware: Bluetooth AOA positioning base station, Bluetooth AOA positioning card, Bluetooth AOA algorithm, etc.;

Positioning accuracy: 10cm~30cm;

Function realization: real-time positioning of personnel, a statistical roll call of construction personnel, electronic fence, one-key call for help, early warning of dangerous situations, etc.

Bluetooth AOA location base station and tag

The Bluetooth AOA positioning base station and tag are the basis of the Bluetooth AOA positioning system. The Bluetooth AOA positioning hardware products launched by Shenzhen Weineng Information Technology Co., Ltd. include the Bluetooth AOA positioning base station and the Bluetooth AOA positioning tag.

(1) Bluetooth AOA positioning base station

AOA positioning base station VDB2608, as the signal receiving end of Bluetooth AOA positioning system, is developed based on Nordic nRF52833 solution, external PA+LNA, using two-stage low insertion loss high-speed RF switch to realize fast scanning of the antenna array. The antenna architecture adopts a 12-antenna matrix antenna array, which can realize the solid angle positioning (elevation angle and azimuth angle) of a single AOA positioning base station.

The appearance of the AOA positioning base station VDB2608 is shown in the following figure.

VDB2608 cooperates with SKYLAB's（天工测控） self-developed Bluetooth AOA positioning system, and the positioning accuracy can reach 10cm-30cm (CEP90). The capacity of a single AOA base station (1 VDB2608) is 150pcs (with angle filtering). In terms of external interfaces, there are network ports and DC connectors, which support standard POE power supply or DC power supply.

AOA base station VDB2608 installation

AOA positioning base station VDB2608 adopts a snap-on structure design, which is convenient for ceiling installation. The installation is shown in the Bluetooth box mark in the following figure.

Bluetooth AOA positioning base station VDB2608 deployment

The actual deployment of the Bluetooth AOA positioning base station VDB2608 is shown in the figure below. It can be installed on a normal ceiling. It is recommended to deploy 4 AOA positioning base stations in each positioning scene area (there is no wall in the scene).

Installation height and spacing requirements: 3m<A, B<10m; 3m<H<5m.

(2) Bluetooth AOA positioning tag

Here we take the AOA positioning card as an example. SKYLAB's Bluetooth AOA positioning card also uses the nRF52833 solution as the signal transmitter of the Bluetooth AOA positioning system. It supports motion detection, supports SOS buttons and LED light display, and supports magnetic charging. The battery capacity is 550mAh. Under the default parameter configuration, the standby time is more than 1 month. The shell adopts the ultrasonic pressing method, which can achieve IP67 waterproof and dustproof performance. The appearance of the AOA positioning work card is shown in the following figure.

3. Bluetooth AOA positioning system

Four Bluetooth AOA positioning base stations are installed in each positioning area to collect the angle information of the AOA positioning tag (work card), connect to the back-end positioning server through a standard POE switch, and finally display the actual position of the AOA positioning tag on the PC side. The hardware architecture of the Bluetooth AOA positioning system is shown in the figure below.

4. Software Architecture of Bluetooth AOA Positioning System

SKYLAB's Bluetooth AOA positioning system architecture is divided into four layers, namely the object layer, acquisition layer, processing layer, and presentation layer, as shown in the following figure.

◆ Object Layer
The object layer includes people, objects, places, and things, that is, the people and objects under supervision. The real-time location can be obtained by locating the AOA positioning tag. If the alarm is alarmed, the video can be linked.

◆ Acquisition layer
The AOA positioning badge of the acquisition layer can be worn on the personnel. The Bluetooth AOA positioning card is the front end of data collection. As a wireless data transmission module, it can send positioning data regularly; AOA positioning base station, sensing equipment, network equipment, etc. are responsible for uploading the information data of the AOA positioning card in real-time to the processing layer for position calculation, data analysis, etc.

◆ Processing layer
The processing layer includes the Bluetooth AOA positioning engine server, data server, and business server. The server is responsible for location calculation, data analysis, and data auditing.

◆ Display layer
People wear AOA Bluetooth positioning tags (such as AOA positioning badges) to move within the coverage of AOA base stations and can view the current real-time positions of people and items through the display terminal. The initialization of system positioning data, business process management, user management, data query, etc. are all implemented through the browser.

5. Bluetooth AOA positioning software management system

The following is a demo of the Bluetooth AOA positioning software management system developed by SKYLAB. Through this positioning management system demo, you can query the real-time location of the person wearing the Bluetooth AOA tag, AOA positioning base station management, AOA tag management, personnel management, account management, and other functions.

(1)AOA positioning system login interface, as shown below:

(2)View the real-time position of the person wearing the AOA positioning tag on the software side, as shown in the following figure:

(3)AOA Bluetooth positioning tag management in the positioning area, as shown in the figure below:

(4)Bluetooth AOA positioning base station management in the positioning area, as shown in the figure below:

(5)In the software management system, the personnel who need to be located can be managed, as shown in the following figure:

(6)Map management, in the system settings - map management function, you can import maps of multiple positioning areas, and support the import of CAD/GIS indoor maps, as shown in the following figure.

(7) In Account management, you can set various operations such as account and password modification in the user center, as shown in the following figure.

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由翊翊所思转载自天工测控，原文标题为:Bluetooth AOA indoor Positioning System Solution，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

全部评论（0）

暂无评论

【应用】天工测控GNSS模组SKM-6DM助力解决海洋浮漂定位设备信号差问题，灵敏度达-148dBm

通过使用天工测控模组SKM-6DM实现了海洋浮漂的定位需求，而且SKM-6DM使用简单，节省了时间成本。模组供电采用3.3V供电，与板子其他模块的供电电平一致不需要额外的电平转换。

应用方案发布时间 : 2023-05-13

【应用】天工测控高集成度WIFI模块SKW92A_E8用在教育高拍仪，支持300Mbps物理层数据速率

无线高拍仪通常利用摄像头拍摄某客户研发教育高拍仪，配合其公司的教育屏幕，老师把试卷书本放在高拍仪，通过摄像头扫描到试卷或书本内容，将内容同步到其公司自研的教育屏幕上，需要选用低成本的无线无线WIFI芯片，本文推荐天工测控无线WiFi模块SKW92A_E8。

应用方案发布时间 : 2023-04-25

【应用】天工测控提供GNSS+MEMS组合导航模块SKG128DA，数据更新率1Hz，助力车载T-BOX

随着新能源车如雨后春笋般崛起，这其中有很多新的需求也开始涌现，如T-BOX，国产天工测控提供GNSS+MEMS组合导航模块SKG128DA，为车载T-BOX提供更多设计可能。

应用方案发布时间 : 2022-12-10

天工测控（Skylab）无线模块选型表

描述- 深圳市天工测控技术有限公司（Skylab M&C Technology Co.,Ltd），是一家专业从事GNSS、WiFi、蓝牙等无线产品的研究和应用的高新技术企业。旨在向国内外OEM/ODM客户以及系统集成商提供高品质、高性能的无线模块和应用方案，致力为客户创造长期的价值和潜在的增长。

型号- SKM2101,WG209,SKG122C,SKM88,SKW92B,SKM89,SKW92A,SKM2102,SKG17DT,SKM2105FR,SKM86,TR6260,SKM2505,MT7612E,SKM2105,MT7688A,SKG12D,SKG122S,SKG12F,SKW496C,SKM2308DR,SKG12A,SKG092C,SKG122Y,SKW497,SKM80,SKM81,SKM82,SKG09BL,SKW3000,SKG093Q,SKG122GR,SKG093N,SKB501,SKG1223,SKG121S,SKG121T,RTL8812,SKM61C,RTL8811,ESP32-H2,MT7610E,SKG12BL,SKM2505NR,SKG16BL,SKG12DT,WG822,SKG123NRD,WG821,SKG12UR,SKM2305NDR,SKM2102SR,SKG09DT,SKM2105QR,MT7601,RTL8821CS,SKM2102CR,SKG123L,SKG122ER,SKG123N,SKG17D,LCS6260,SKG123Q,SKW101,SKW100,SKW103,SKG123NR,SKG121SA,MT7620A,WG243,SKM2308,SKG09,ESP32-S3,SKM2302,SKM2305,SKG123NT,QCA9887,MT7628,SKM-6DM,SKW78,LCS2028,BK7231,SKM2302DR,RTL8822CS,ESP32-C2,MT7981,ESP32-C5,SKM2102ER,SKB380,SKB381,WG239,BL2028,SKG8212,SKM65C,WG233,SKW77,WG231,MT7603E,WG238,ESP8266,WG237,WG236,WG235,ESP32,WG241,QCA9531,WG240,RTL8852,SKM81F,SKG123ND,SKM65,WG229,SKM61,SKM2105DR,SKW17AE,SKB376,WG222,SKB379,SKB378,ECR6600,WG226,WG225,SKB369AA,SKM80D,SKG172T,MT7697D,SKM2101MR,SKM80F,SKG16,SKG17,SKM55,WG219,SKB360,WG217,SKW93A,SKG12,SKB362,SKM51,SKB361,SKM52,SKM53,SKG09D,ESP8285,SKG09F,SKW99,MT7621A,SKG09A,SKB369,WG215,SKG09L,SKM51G,SKM51F,SKM51C,MT7628N,SKB360I,IPQ6000,SKM2105NR

选型指南 - 天工测控 - 2023/4/14 PDF 中文下载

天工测控WiFi模块选型表

天工测控面向物联网市场中的智慧物流，智能交通，智慧安防，智慧能源，智能医疗，智慧建筑，智能制造，智能家居，智能零售，智慧农业，智慧楼宇等应用场景研发推出了性能强大，且支持二次开发的2.4GHz单频及2.4/5GHz双频UART串口WiFi模块，USB接口WiFi模块，AP/Router无线路由WiFi模块及远距离图传WiFi模块，高清视频传输WiFi模块

选型表 - 天工测控立即选型

天工测控SKG系列GNSS模块精度差异与RTK技术详解

RTK也称载波相位差分技术，通过对两测站的载波相位观测值进行实时处理，能实时提供测站的三维坐标，并达到厘米级或者毫米级的高精度。深圳市天工测控的RTK模块如SKG122ER等，支持多种配置，通过指令控制基站坐标锁定、伪距平滑、数据输出等，提高定位精度。

技术探讨发布时间 : 2024-09-06

天工测控（Skylab）成立于2002年，总部在深圳，全球布点，为全球客户提供包括工业级GNSS（GPS、BDS、GLONASS、GALILEO）导航定位模块，WIFI模块，蓝牙模块，UWB模块，NB-IoT模块及室内定位解决方案在内的多种产品和服务。

WiFi模块蓝牙模块 GNSS定位模块

授权代理商 - 世强先进（深圳）科技股份有限公司线上商城技术资料

展开

天工测控WiFi+蓝牙组合模块选型表

天工测控提供如下WiFi+蓝牙组合模块选型，数据速率72Mbps~1201Mbps，SMD封装，多种蓝牙标准可选

产品型号	品类	芯片	模块尺寸(LWH)（mm）	天线	封装	模块标准IEEE 802.11	频率范围(GHZ)	数据速率(Mbps)	WiFi接口	蓝牙标准	蓝牙接口
WG215	WiFi+蓝牙组合模块	ESP32	25.5183.0	PCB/IPEX	SMD	b/g/n	2.4	150	UART	V2.1+EDR,BLE4.2	UART

选型表 - 天工测控立即选型

天工测控GNSS高精度天线：支持多星座信号接收，精准定位的卓越之选

在现代科技飞速发展的时代，精准定位成为了众多领域不可或缺的需求。天工测控GNSS高精度天线以其卓越的性能特点，为实现高精度定位提供了可靠的解决方案。

产品发布时间 : 2024-09-05

nRF52833模组 RF-BM-ND07 硬件规格书

型号- RF-BM-ND09A,NRF51802,NRF51,NRF52,NRF52811,NRF52833,NRF52832,NRF52810,NRF51822,RF-BM-ND01,RF-BM-ND02,RF-BM-ND08CI,RF-BM-ND04,RF-BM-ND05,RF-BM-ND06,RF-BM-ND07,RF-BM-ND04CI,RF-BM-ND02I,RF-BM-ND08,RF-BM-ND02CI,RF-BM-ND04I,NRF52833-QIAA,RF-BM-ND02C,RF-BM-ND08I,RF-BM-ND04C,NRF52840,RF-BM-ND04A,RF-BM-ND08C,RF-BM-ND08A,NRF52系列,NRF51系列,NRF52805,RF-BM-ND05I,RF-BM-ND01C

数据手册 - 信驰达 - V1.1 - 2021/05/31 PDF 中文下载