CN102291674A - Wireless Location method based on the Wi-Fi system - Google Patents

Wireless Location method based on the Wi-Fi system Download PDF

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Publication number
CN102291674A
CN102291674A CN2011102095572A CN201110209557A CN102291674A CN 102291674 A CN102291674 A CN 102291674A CN 2011102095572 A CN2011102095572 A CN 2011102095572A CN 201110209557 A CN201110209557 A CN 201110209557A CN 102291674 A CN102291674 A CN 102291674A
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access point
wireless access
user terminal
wi
new
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CN2011102095572A
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陈大年
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盛乐信息技术(上海)有限公司
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Abstract

本发明揭示了一种基于Wi-Fi的无线定位方法与系统,其根据无线信号强度来较为准确地进行定位,同时允许用户添加新的AP,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 The present invention discloses a method and a wireless location system based on Wi-Fi, which is to be positioned more accurately in accordance with the wireless signal strength, while allowing the AP to add new users, and further to extend a small range of the positioning system to position a wide range of system, the purpose of a plurality of user terminals to share. 该定位方法包括获取待定位用户终端定位信息以及根据该定位信息计算用户终端位置信息的步骤以及新无线接入点入库的步骤,其中所述定位信息包括用户终端所检测到的无线接入点地址和Wi-Fi信号强度,新无线接入点入库的步骤包括:根据Wi-Fi信号强度计算用户终端到新无线接入点之间的距离;根据用户终端的位置信息和用户终端到新无线接入点之间的距离,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 The positioning method comprises acquiring location information of the user terminal to be positioned and Step user terminal position information and the new wireless access point is calculated based on the storage location information, wherein the user terminal comprises a location information of the detected wireless access point address and Wi-Fi signal strengths, the new wireless access point storage step comprises: calculating the user according to the signal strength of the Wi-Fi terminal to the distance between the new wireless access point; and a user according to the location information of the user terminal to the new terminal the distance between the wireless access point to obtain location information of a new wireless access point; the address of the new wireless access points with the location information stored in the database.

Description

一种基于Wi-Fi的无线定位方法与系统 Wireless Location method based on the Wi-Fi system

技术领域 FIELD

[0001] 本发明涉及无线定位技术领域,特别是涉及一种基于Wi-Fi的无线定位方法与系统。 [0001] The present invention relates to the field of wireless location technology, particularly to a Wi-Fi Wireless Location Method and System.

背景技术 Background technique

[0002] 位置信息在人们的日常生活中具有十分重要的作用。 [0002] location information has a very important role in people's daily lives. 例如,在旅游景点、博物馆等对游客来说较为陌生的环境中,使用定位导航信息可以为他们提供更准确、更方便的服务; 在医院管理过程中,定位信息可以应用于医院追踪资产、设备和病人,及时了解和掌握关键工作人员、资产和医疗设备的实时位置信息,从而帮助医疗保健机构降低成本、改善工作流程和提高病人护理服务质量。 For example, in an unfamiliar environment more tourists attractions, museums, etc., use the navigation information may provide a more accurate, more convenient service for them; in hospital management process, the positioning information can be used in hospitals to track assets, equipment and the patient, understand and grasp the real-time location information of key staff, assets and medical equipment to help healthcare organizations reduce costs, improve workflow and improve the quality of patient care services.

[0003] 目前,全球定位系统(GlcAal Positioning System, GPS)是获取室外环境位置信息的最常用方式。 [0003] Currently, the global positioning system (GlcAal Positioning System, GPS) outdoor environment is to obtain location information of the most common ways. 近年来,随着无线移动通信技术的快速发展,GPS和蜂窝网络相结合的A-GPS(Assisted Global Positioning System)定位方式在紧急救援和各种基于位置服务中逐渐得到了应用。 In recent years, with the rapid development of wireless mobile communication technology, A-GPS GPS and cellular networks combined (Assisted Global Positioning System) positioning method and the emergency services based on various positions gradually it has been applied. 但由于卫星信号易受到障碍物的遮挡,GPS和AGPS等卫星定位技术并不适用于室内(商场、办公室等)或高楼林立等有障碍物遮挡的场合。 But because satellite signals are susceptible to blocking, GPS and AGPS satellite positioning technology and other obstacles not suitable for indoor (shopping malls, offices, etc.) or high-rise buildings, which are occasions blocked by obstacles. 而目前无线定位技术迅速发展,已成为GPS的有力补充。 At present, the rapid development of wireless location technology, has become a strong complement to the GPS.

[0004] 其中比较流行的Wi-Fi定位是无线局域网络系列标准之IEEE802. 11的一种定位解决方案。 [0004] one of the more popular Wi-Fi positioning is a wireless local area network standard series of IEEE802. 11. A positioning solutions. 该技术采用经验测试和信号传播模型相结合的方式,易于安装,需要很少基站, 能采用相同的底层无线网络结构,系统总精度高。 The technology uses empirical test mode signal propagation model and combined, easy to install, requires minimal base station can use the same underlying wireless network architecture, high overall system accuracy. 其中,信号传播模型是一种利用无线信号传播的数学模型,把在用户端测得的信号强度转化为距离,由此估计用户的位置的技术。 Wherein the signal propagation model is a mathematical model of the radio signal propagation, at the end of the user measured signal strength is converted to a distance, whereby the position of the user's estimation techniques.

[0005] 具体而言,基于Wi-Fi定位是通过收集一些地区的Wi-Fi基站mac地址来对应该基站的经纬度做成数据库。 [0005] Specifically, Wi-Fi positioning is based on latitude and longitude should be collected by the base stations in some parts of Wi-Fi base station to make mac address database. 其主要过程是通过搜寻周边无线信息,然后通过几个接入点来确认自己的位置。 The main process is by searching the surrounding wireless information, and to confirm their position by several access points. 同时在搜索过程中会获取到相应无线接入点(AP)的mac地址,然后通过网络去数据库中查询这个mac地址对应的经纬度,再根据几个基站与用户终端的信号强度,最终确认用户终端的位置。 While the search process will be obtained the corresponding wireless access point (AP) mac address, then queries the corresponding latitude and longitude mac address through the network to the database, then the signal strength of several base stations of the user terminal, user terminal final confirmation s position. 除了节约硬件成本外,基于Wi-Fi的定位技术还降低了射频干扰的可能性。 In addition to saving the cost of the hardware, the Wi-Fi-based location technology also reduces the likelihood of radio frequency interference. 而且Wi-Fi定位系统可与其他客户共享网络,因此有效地降低了另外安装单独无线网络的必要性。 And Wi-Fi positioning system may be shared network with other clients, thereby effectively reducing the need to install a separate wireless network.

[0006] 然而,现有的Wi-Fi定位技术依赖于数据库中已存的AP地址和位置信息,而数据库中的AP不能扩充,导致其在定位准确性与扩展能力上的不足。 [0006] However, a conventional Wi-Fi positioning technology-dependent address of the AP and the location information already stored in the database, and the database can not be expanded in the AP, which leads to lack of accuracy in the positioning and expansion capacity.

发明内容 SUMMARY

[0007] 有鉴于此,本发明提供一种基于Wi-Fi的无线定位方法与系统,以解决现有Wi-Fi 的无线定位技术的缺失。 [0007] Accordingly, the present invention provides a wireless Wi-Fi-based positioning method and system to solve the problems of the prior art wireless location of Wi-Fi.

[0008] 本发明提供的一种基于Wi-Fi的无线定位方法,包括获取待定位用户终端定位信息以及根据该定位信息计算用户终端位置信息的步骤,其中所述定位信息包括用户终端所检测到的无线接入点地址和Wi-Fi信号强度,其还包括新无线接入点入库的步骤,其中新无线接入点为用户终端检测到的且未记录于数据库中的无线接入点,该步骤包括:根据Wi-Fi信号强度计算用户终端到新无线接入点之间的距离;根据用户终端的位置信息和用户终端到新无线接入点之间的距离,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 [0008] The present invention provides a wireless positioning method is based on Wi-Fi, comprising obtaining location information of the user terminal to be located and the step of calculating the position information of the user terminal based on the positioning information, wherein the location information comprises a user terminal is detected wireless access point address and the Wi-Fi signal strength, further comprising the step of storage of a new wireless access point, wherein a new wireless access point to the user terminal is detected and not recorded in the database and a wireless access point, this step comprises: calculating the user according to the signal strength of the Wi-Fi terminal to the distance between the new wireless access point; in accordance with the position information and the user terminal to the user terminal the new distance between the wireless access point, wireless access point to obtain a new position information; address with the new wireless access point position information stored in the database.

[0009] 进一步的,在新无线接入点入库的步骤中,若所述新无线接入点对应多个用户终端,则包括:根据Wi-Fi信号强度计算每个用户终端到新无线接入点之间的距离;根据每个用户终端到新无线接入点之间的距离与对应的用户终端位置信息,得到新无线接入点对应于每个用户终端的多个位置信息;将所述新无线接入点对应于每个用户终端的多个位置信息进行加权平均,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 [0009] Further, in the step of storage of the new access point, if the new wireless access point corresponding to a plurality of user terminals, the comprising: calculating for each user based on the signal strength of Wi-Fi wireless access terminal to a new the distance between the points; each user terminal to the user terminal position information corresponding to the distance between the new wireless access point, the new wireless access point to obtain information of a plurality of positions corresponding to each user terminal; the said plurality of position information of the new access point corresponding to each user terminal in the weighted average to obtain the position information of the new wireless access point; the address of the new wireless access points with the location information stored in the database.

[0010] 进一步的,所述根据定位信息计算用户终端位置信息的步骤包括:根据当前无线接入点地址在数据库中查询得到当前无线接入点的位置信息,其中所述当前无线接入点为用户终端所检测到的且记录于数据库中的无线接入点;根据Wi-Fi信号强度计算用户终端到当前无线接入点之间的距离;根据当前无线接入点的位置信息与用户终端到当前无线接入点之间的距离,得到用户终端的位置信息;将得到的用户终端的位置信息通过路由器发送给用户终端。 [0010] Further, the step of calculating the position information of the user terminal based on the positioning information includes: the current access point address query to obtain current location information of the wireless access points in a database, wherein said current wireless access point the user terminal is detected and recorded in the database and a wireless access point; calculated according to the Wi-Fi signal strengths to the user terminal distance between the current wireless access point; the position information of the current user terminal to the wireless access point distance between the current wireless access point, user terminal position information is obtained; the location information of the user terminal will be sent to the user terminal via a router.

[0011] 进一步的,当用户终端所检测到的且记录于数据库中的无线接入点为多个时,选取Wi-Fi信号强度最强的无线接入点作为后续计算所需的当前无线接入点。 [0011] Further, when a plurality of user terminals detected and recorded in a database of wireless access point, to select the strongest signal strength Wi-Fi wireless access point as required for subsequent calculations of the current radio access point.

[0012] 本发明提供的一种基于Wi-Fi的无线定位系统,包括用户终端与服务端,所述服务端包括:数据库,其内存储有多个无线接入点地址与对应的位置信息;路由器,接收用户终端的所检测到的无线接入点地址、Wi-Fi信号强度,并发送和接收用户终端的位置信息; 定位服务器,根据接收到的无线接入点地址和Wi-Fi信号强度计算用户终端位置,且根据接收到的无线接入点地址、Wi-Fi信号强度和用户终端的位置信息进行新无线接入点的入库,其中新无线接入点为用户终端检测到的且未记录于数据库中的无线接入点,新无线接入点的入库包括:根据Wi-Fi信号强度计算用户终端到新无线接入点之间的距离;根据用户终端的位置信息和用户终端到新无线接入点之间的距离,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 [0012] The present invention provides a wireless Wi-Fi positioning system, comprising a user terminal and the server, the server comprising: a database having stored therein a plurality of location information and wireless access points corresponding to the address; a router, a user terminal receiving the detected wireless access point address, Wi-Fi signal strength, and location information transmitting and receiving user terminal; location server according to the received address of the wireless access point and Wi-Fi signal strength calculating the position of the user terminal, and according to the received address of the wireless access point, the location information of Wi-Fi signal strength and storage of new user terminal is a wireless access point, wherein a new wireless access point to the user terminal detects and unrecorded storage in the database of wireless access point, the new wireless access point includes: calculating according to Wi-Fi signal strengths to the distance between the user terminal the new wireless access point; according to the position of the user terminal information and user terminals the distance between the new wireless access point to obtain location information of a new wireless access point; the address of the new wireless access points with the location information stored in the database.

[0013] 进一步的,在新无线接入点入库的过程中,若所述新无线接入点对应多个用户终端,则包括:根据Wi-Fi信号强度计算每个用户终端到新无线接入点之间的距离;根据每个用户终端到新无线接入点之间的距离与对应的用户终端位置信息,得到新无线接入点对应于每个用户终端的多个位置信息;将所述新无线接入点对应于每个用户终端的多个位置信息进行加权平均,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 [0013] Further, during the storage of the new wireless access point, if the new wireless access point corresponding to a plurality of user terminals, the comprising: calculating for each user based on the signal strength of Wi-Fi wireless access terminal to a new the distance between the points; each user terminal to the user terminal position information corresponding to the distance between the new wireless access point, the new wireless access point to obtain information of a plurality of positions corresponding to each user terminal; the said plurality of position information of the new access point corresponding to each user terminal in the weighted average to obtain the position information of the new wireless access point; the address of the new wireless access points with the location information stored in the database.

[0014] 进一步的,所述定位服务器根据接收到的无线接入点地址和Wi-Fi信号强度计算用户终端位置信息的过程包括:根据当前无线接入点地址在数据库中查询得到当前无线接入点的位置信息,其中所述当前无线接入点为用户终端所检测到的且记录于数据库中的无线接入点;根据Wi-Fi信号强度计算用户终端到当前无线接入点之间的距离;根据当前无线接入点的位置信息与用户终端到当前无线接入点之间的距离,得到用户终端的位置信息;将得到的用户终端的位置信息通过路由器发送给用户终端。 [0014] Further, the location server calculating the location information of the user terminal according to the received address of the wireless access point and Wi-Fi signal strengths process comprising: a query to obtain current radio access in the database according to the current address of the wireless access point point position information, wherein said current wireless access point to the user terminal detects and records in the database, the wireless access point; Wi-Fi is calculated according to the user terminal to the signal strength between the current wireless access point distance ; according to the position information of the current user terminal to the access point the distance between the current wireless access point, user terminal position information is obtained; the location information of the user terminal will be sent to the user terminal via a router. [0015] 进一步的,当用户终端所检测到的且记录于数据库中的无线接入点为多个时,选取Wi-Fi信号强度最强的无线接入点作为后续计算所需的当前无线接入点。 [0015] Further, when a plurality of user terminals detected and recorded in a database of wireless access point, to select the strongest signal strength Wi-Fi wireless access point as required for subsequent calculations of the current radio access point.

[0016] 综上所述,以上无线定位技术与系统根据无线信号强度来较为准确地进行定位, 同时允许用户添加新的AP,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 [0016] In summary, the above system with wireless location technology to more accurately locate the wireless signal strength, while allowing the AP to add new users, and further the small positioning system for a wide range of extended positioning system to achieve multiple user terminals sharing purposes. 可见,其不仅可以对用户终端进行及时准确的定位,也可由用户参与来增加新的AP信息,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 Visible, which can not only timely and accurate positioning of the user terminal, the user may also be involved in the AP to add new information, and thus to extend the range of the small positioning system positioning system for a wide range, the purpose of a plurality of user terminals to share. 特别是针对分层情况,若每一层都有独立的AP,采用以上方案会将每一层的AP信息存入数据库中,由于楼板或其他障碍物的影响,在当前楼层搜索得到的其他层的Wi-Fi信号都会遇到不同程序的衰减,而当前楼层的Wi-Fi信号强度是最强的,根据这一特性,能准确的判断用户终端所在的楼层,并及时将计算得到的位置信息返回给用户终端。 Especially for layered case, when each layer has its own AP, using the above scheme of each layer will AP information stored in the database, or other obstacles due to the floor, the floor in the current search for other layers obtained a Wi-Fi signal attenuation will encounter different programs, and Wi-Fi signal strength of the current floor is the strongest, according to this feature, the user can accurately determine floor terminal is located, and timely calculated position information obtained returned to the user terminal. 据悉,目前没有定位系统针对分层定位,而本定位系统能很好填补这一空缺。 It is reported that there is no hierarchical positioning system for positioning, and this system is well positioned to fill this gap.

附图说明 BRIEF DESCRIPTION

[0017] 图1为本发明一实施例所提供的基于Wi-Fi的无线定位技术的一应用实例; [0017] FIG 1 provides an example of application is based on the Wi-Fi wireless location technology to an embodiment of the invention;

[0018] 图2为本发明一实施例所提供的基于Wi-Fi的无线定位方法的用户终端定位原理图; [0018] FIG. 2 is based on Wi-Fi wireless positioning method of a user terminal embodiment provided by positioning a schematic embodiment of the present invention;

[0019] 图3为本发明一实施例所提供的基于Wi-Fi的无线定位方法的新无线接入点入库原理图; [0019] FIG 3 based wireless positioning method Wi-Fi wireless access point of a new embodiment is provided a schematic diagram of the present embodiment of the invention the storage;

[0020] 图4为本发明一实施例所提供的基于Wi-Fi的无线定位方法的用户终端定位的方法流程图。 [0020] FIG 4 is a flowchart based on Wi-Fi wireless positioning method embodiment provided by the user terminal to an embodiment of the present invention is positioned.

[0021] 图5为本发明一实施例所提供的基于Wi-Fi的无线定位方法的新无线接入点入库的方法流程图。 [0021] FIG 5 is a flowchart of a method embodiment provided by the radio-based positioning method Wi-Fi wireless access point of a new embodiment of the present invention, a warehousing.

具体实施方式 Detailed ways

[0022] 为让本发明的上述特征和优点能更明显易懂,下文特举示例性实施例,并配合附图,作详细说明如下。 [0022] In order to make the above features and advantages of the invention more comprehensible, several exemplary embodiments Hereinafter exemplary embodiments accompanied with figures are described in detail below.

[0023] 现有的Wi-Fi的定位技术采用经验测试和信号传播模型相结合的方式,利用数据库中已存的无线接入点(AP)地址和位置信息,根据信号强度与距离之间的关系获取用户终端与AP之间的距离,进而获得用户终端的位置信息。 [0023] Wi-Fi conventional positioning technologies using empirical test mode signal propagation model and combined, using a database that already exists in wireless access point (AP) address and location information, in accordance with the distance between the signal intensity and the relationship between the user terminal acquires the distance and AP, and further obtain the location information of the user terminal. 然而,这种技术有其局限性,因为数据库中已存的AP固定,无法进行扩充,限制了Wi-Fi定位系统的扩展,且由于参考点受限, 定位准确性也存在不足。 However, this technique has its limitations, because the database that already exists in the AP fixed and can not be expanded, limiting the expansion of Wi-Fi positioning system, and because the reference point is restricted, the positioning accuracy is also insufficient.

[0024] 因此本发明公开一种基于Wi-Fi的无线定位技术,根据无线信号强度来较为准确地进行定位,同时允许用户添加新的AP,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 [0024] Thus, the present invention discloses a Wi-Fi-based wireless location technology to more accurately locate the wireless signal strength, while allowing the AP to add new users, and further the small positioning system extended to a wide range of positioning system, the purpose of a plurality of user terminals to share.

[0025] 下面结合图1、图2与图3,来详细描述本发明提供的基于Wi-Fi的无线定位方法与系统。 [0025] below with reference to FIGS. 1, 2 and 3, based on Wi-Fi by the Wireless Location System and the present invention provides a method described in detail. 在该方法与系统中,定位过程主要分为三个阶段: In this method and system, the positioning process consists of three stages:

[0026] 第一阶段为定位信息获取阶段。 [0026] The first stage of positioning information acquisition stage. 在对用户终端进行定位时,用户终端(例如笔记本电脑110和手机120)会将定位信息(包括其所检测到的AP地址和Wi-Fi信号强度)发送给服务端。 When positioning the user terminal, a user terminal (e.g., mobile phone 120 and notebook computer 110) will positioning information (including the address in the detected AP and Wi-Fi signal strength) is sent to the server. 如此,服务端便可以获得以上定位信息。 Thus, the server will be able to get more than positioning information. 例如笔记本电脑110检测到两个无线接入点APl和AP2,并将这两个无线接入点地址与对应的Wi-Fi信号强度上传至web服务器,以通过网络传送至服务端。 Such as a laptop 110 detects APl and two wireless access points AP2, and upload the two wireless access point address corresponding to the Wi-Fi signal strengths to the web server, through the network transmission to the server. 服务端往往设置有数据库210、定位服务器220和路由器230,定位服务器220通过路由器230便可以从网络上获取笔记本电脑110所发送来的定位 Often provided with a database server 210, the location server 220 and the router 230, the positioning server 220 can acquire the positioning laptop 110 transmitted on the network via the router 230

fn息ο fn interest ο

[0027] 在这里,定义用户终端检测到的且未记录于数据库中的AP为新AP;定义用户终端所检测到的且记录于数据库中的无线接入点为当前AP。 [0027] Here, the definition of the user terminal is detected and not recorded in the database for the new AP AP; the definition of the user terminal is detected and recorded in the database for the current wireless access point AP. 例如,在本实施例中,笔记本电脑110检测到APl与AP2,其中APl为数据库210中已有的参考点,其地址与位置信息记录于数据库210中,在此APl为当前AP;而AP2未记录于数据库210中,则AP2为新AP。 For example, in the present embodiment, the laptop 110 and AP2 detects the APl, which is a database 210 APl existing reference point, the address recorded in the position information database 210, where the AP APl current; AP2 and not recorded in the database 210, the new AP2 AP.

[0028] 这里所说的AP地址是指AP的Mac地址,即AP的物理层地址,用于标识不同的AP, 其由一连串十六进制数字组成,格式为:00-00-0-00-00-00。 [0028] AP address mentioned here means Mac address of the AP, i.e., the physical layer address of the AP, used to identify different AP, which is a series of hexadecimal digits, in the format: 00-00-0-00 -00-00. WIFI信号强度通常指RSSI的值。 Generally refers WIFI signal strength RSSI value. RSSI指接收信号质量达到的指标值,可以判定无线接收情况。 Refers to the RSSI indicator reaches the value of received signal quality, where the radio reception may be determined. 如此,在实际进行定位时,服务端接收到的数据包包括RSSI的值和AP的MAC地址。 Thus, during the actual positioning server receives the data packet includes the MAC address and RSSI values ​​of AP.

[0029] 第二阶段为定位阶段,包括用户终端的定位和新AP入库两个过程。 [0029] The second stage is the positioning phase, including the positioning of the user terminal and the new AP two storage process. 这两个过程中都需要使用到信号衰减模型。 Both processes require the use of the signal attenuation model. 因为在无线信号的传播过程中,信号会受到多方面干扰,在有障碍物的信号传播空间中,信号衰减模型如公式(1-1)所示: Since the propagation of radio signals, interference signals are subject to many, there is an obstacle in the spatial propagation of the signal, the signal attenuation model as shown in equation (1-1):

[0030] prr =Pis -PLid0)+X0 [0030] prr = Pis -PLid0) + X0

dO (1-1) dO (1-1)

[0031] 式中:Pjs为节点j发送数据包的RSSI it, Pir为节点i接收到数据包的RSSI值,d 为传输距离(单位为m),PL(Clci)为信号传输CUdtl的单位为m)长度后的衰减值,PUdtl)为初始值,η和\为修正因子。 [0031] wherein: Pjs node j to transmit data packets RSSI it, Pir is a RSSI value node i receives a packet, d is the transmission distance (in m), PL (Clci) signal transmission CUdtl units of m) the length of the attenuation value, PUdtl) as an initial value, η and \ is the correction factor. 根据衰减模型,定位阶段的步骤如下: The decay model, the step of positioning the stage is as follows:

[0032] 1、用户终端定位步骤如图4所示,包括: [0032] 1, the step of positioning the user terminal 4, comprising:

[0033] SlOl :根据当前AP (本例中,为API)地址在数据库210中查询得到当前AP的位置信息,其中数据库210中存储了多个AP的MAC地址和位置信息等。 [0033] SlOl: the current AP (in the present embodiment, for the API) to give an address query current location information of the AP database 210, wherein database 210 stores a plurality of MAC address of the AP and the location information and the like.

[0034] S102 :根据接收到的Wi-Fi信号强度(Pj,利用公式(1_1)计算用户终端到当前AP之间的距离,其中PL(Clci)、d0, Pjs为离线训练后得到的值。 [0034] S102: (Pj, using the formula (1 1) is calculated according to the Wi-Fi signal strength received by the user terminal to the distance between the current AP, where the value PL (Clci), d0, Pjs obtained after offline training.

[0035] S103:根据当前AP的位置信息与用户终端到当前AP之间的距离,得到用户终端的 [0035] S103: The AP position information of the current user terminal to the distance between the current AP, the user terminal obtained

位置信息。 location information.

[0036] S104 :将得到的用户终端的位置信息通过路由器发送给用户终端。 [0036] S104: the user terminal location information will be sent to the user terminal via a router.

[0037] 本领域技术人员当知,以上用户终端定位过程中,当前AP的数量可能不止一个, 可以选取其中Wi-Fi信号最强的AP,即最近AP最为参考点,进行以上计算,来实现用户终端的定位。 [0037] Those skilled in the art as known to, more than one user terminal positioning procedure, the current number of the AP may be more than one, may be selected where Wi-Fi signal is the strongest AP, i.e., the nearest AP most point of reference, the above calculation, to implement the user positioning terminal. 也可以利用所有当前AP建立等信号强度圆进行定位,本发明在此不以此为限, 当前本领域技术人员所熟知的利用当前AP进行用户终端定位的技术均可以用于该定位过程。 May also be used to establish the current AP all round positioning signal strength, etc., the present disclosure is not limited thereto, the current well known to those skilled in the art with the current AP in the user terminal location may be used in the positioning process.

[0038] 2、新AP入库步骤如图5所示,包括: [0038] 2, the new AP storage step 5, comprising:

[0039] S201 :根据接收到的Wi-Fi信号强度(Pi,)计算用户终端到新AP之间的距离。 [0039] S201: (Pi,) is calculated according to the Wi-Fi user terminal received signal strength to a distance between the new AP. 具体根据公式(1-1)和接收到的Wi-Fi信号强度得到衰减值;而后根据衰减值与距离的平方成比例的原理,计算新AP到用户终端之间的距离。 DETAILED (1-1) to obtain attenuation values ​​according to the formula and Wi-Fi signal strengths received; then according to the principles attenuation value proportional to the square of the distance, calculates the distance between the user terminal to the new AP.

[0040] S202 :根据用户终端的位置和用户终端到新AP之间的距离,得到新AP的位置信息;[0041] S203 :将新AP的地址与位置信息存入数据库。 [0040] S202: The position of the user terminal and the user terminal to the distance between the new AP, the new AP position information is obtained; [0041] S203: The address of the new AP position information stored in the database.

[0042] 需要说明的是,如果新AP对应多个用户终端,例如如图1所示的笔记本电脑110 和手机120均检测到AP2,且AP2并未记录于数据库中。 [0042] Incidentally, if the new AP corresponding to a plurality of user terminals, such as notebook computers and 110 shown in FIG handset 120 were detected AP2, AP2 and not recorded in the database. 那么在根据哪一个用户终端确定新AP的位置信息是需要考虑的问题。 Then the problem which the user terminal determines new AP position information needs to be considered. 在此,对每个用户终端都进行以上S201和S202的计算,得到多个计算结果,对这些结果进行加权平均,作为最终新AP的位置信息。 Here, the user terminals for each above S201 and S202 is calculated to obtain a plurality of calculation results, a weighted average of these results, as the final position information of the new AP. 具体如下: details as follows:

[0043] 假设当前有η个用户终端对应于同一APji为第i个用户终端进行定位计算得到的AP位置信息,则最终AP的位置信息P为: [0043] Suppose there are currently user terminals η APji corresponding to the same i th user terminal AP position information obtained by the positioning calculation, the final position information P to the AP:

[0044] [0044]

Figure CN102291674AD00081

[0045] 第三阶段为定位信息显示阶段,即在用户终端或者提起定位请求的客户端上显示用户终端的位置信息。 [0045] The third stage is the stage positioning information display, i.e., display position information on the user terminal, the user terminal location request or a lift client.

[0046] 可见,在以上技术方案中,不仅可以对用户终端进行及时准确的定位,也可由用户参与来增加新的AP信息,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 [0046] visible, in the above technical solution, not only the timely and accurate positioning of the user terminal, may also be user participation to add new AP information, and thus the small positioning system extended to a wide range of the positioning system, to achieve multi- user terminals sharing purposes. 特别是针对分层情况,若每一层都有独立的AP,采用以上方案会将每一层的AP信息存入数据库中,由于楼板或其他障碍物的影响,在当前楼层搜索得到的其他层的Wi-Fi信号都会遇到不同程序的衰减,而当前楼层的Wi-Fi信号强度是最强的,根据这一特性,能准确的判断用户终端所在的楼层,并及时将计算得到的位置信息返回给用户终端。 Especially for layered case, when each layer has its own AP, using the above scheme of each layer will AP information stored in the database, or other obstacles due to the floor, the floor in the current search for other layers obtained a Wi-Fi signal attenuation will encounter different programs, and Wi-Fi signal strength of the current floor is the strongest, according to this feature, the user can accurately determine floor terminal is located, and timely calculated position information obtained returned to the user terminal. 据悉,目前没有定位系统针对分层定位,而本定位系统能很好填补这一空缺。 It is reported that there is no hierarchical positioning system for positioning, and this system is well positioned to fill this gap.

[0047] 从以上实施例可以看出,本发明提供的基于Wi-Fi的无线定位方法,包括现有的获取待定位用户终端定位信息以及根据该定位信息计算用户终端位置信息的步骤,其中定位信息包括用户终端所检测到的AP地址和Wi-Fi信号强度。 [0047] As can be seen from the above embodiments, the wireless Wi-Fi-based positioning method of the present invention provides, including conventional acquiring location information of the user terminal to be located and the step of the user terminal position information is calculated based on the positioning information, wherein the positioning AP information includes the address of the user terminal and the detected Wi-Fi signal strength. 而本技术方案在定位阶段还加入了新AP入库的步骤,其中新AP为用户终端检测到的且未记录于数据库中的AP。 This aspect of the stage positioning step further added to the storage of the new AP, the new AP to which the user terminal is detected and not recorded in the AP database. 其中新AP入库的步骤如图4所示,包括:根据Wi-Fi信号强度计算用户终端到新AP之间的距离;根据用户终端的位置信息和用户终端到新AP之间的距离,得到新AP的位置信息;将新AP的地址与位置信息存入数据库。 Wherein the step of storage of the new AP 4, comprising: Wi-Fi signal strength calculating the distance between the user terminal to the new AP; the position information of the user terminal and the user terminal to the distance between the new AP, to give the new AP position information; the address with the new AP location information stored in the database.

[0048] 较佳的,在新AP入库的步骤中,若新AP对应多个用户终端,则需要根据Wi-Fi信号强度计算每个用户终端到新AP之间的距离;根据每个用户终端到新AP之间的距离与对应的用户终端位置信息,得到新AP对应于每个用户终端的多个位置信息;将新AP对应于每个用户终端的多个位置信息进行加权平均,得到新AP的位置信息;将新AP的地址与位置信息存入数据库。 [0048] Preferably, in the step of storage of the new AP, the new AP if corresponding to a plurality of user terminals, each user terminal is required to calculate the distance between the new AP according to the Wi-Fi signal strengths; each user terminal position information to the user terminal corresponding to the distance between the new AP, the new AP to obtain the location information corresponding to each user terminal; new AP plurality of position information corresponding to each user terminal in the weighted average, to give the new AP position information; the address with the new AP location information stored in the database.

[0049] 本发明还提供相应的基于Wi-Fi的无线定位系统。 [0049] The present invention further provides a corresponding wireless Wi-Fi-based positioning system. 如图1所示,该系统包括用户终端100与服务端200,其中服务端200包括数据库210、定位服务器220和路由器230。 As shown, the system includes a user terminal 100 with the server 200, wherein server 200 includes a database 210, a location server 220 and a router 230. 数据库210其内存储有多个AP地址与对应的位置信息;路由器220接收用户终端100的所检测到的AP地址、Wi-Fi信号强度,并发送和接收用户终端的位置信息;定位服务器230根据接收到的AP地址和Wi-Fi信号强度计算用户终端位置,且根据接收到的AP地址、Wi-Fi信号强度和用户终端的位置信息进行新AP的入库。 Database 210 having stored therein position information corresponding to the plurality of AP addresses; router 220 receives a user to the AP address, Wi-Fi signal strength detection terminal 100, and transmits and receives the location information of the user terminal; positioning server 230 in accordance with AP addresses and the received Wi-Fi signal strength calculating the position of the user terminal, and for storage of the new AP according to the received location information to AP address, Wi-Fi signal strength and user terminals. 在这里,定义用户终端检测到的且未记录于数据库中的AP为新AP;定义用户终端所检测到的且记录于数据库中的无线接入点为当IiTAP0[0050] 新AP的入库包括以下步骤:根据Wi-Fi信号强度计算用户终端到新无线接入点之间的距离;根据用户终端的位置信息和用户终端到新无线接入点之间的距离,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 Here, the definition of the user terminal is detected and not recorded in the database for the new AP AP; the definition of the user terminal is detected and recorded in the database when the wireless access point IiTAP0 [0050] new AP storage comprises the following steps of: Wi-Fi signal strength calculating the distance between the user terminal to the new wireless access point; in accordance with the position information and the user terminal to the user terminal the new distance between the wireless access point, wireless access point to obtain a new location information; address with the new wireless access point position information stored in the database.

[0051] 较佳的,在新AP入库的步骤中,若新AP对应多个用户终端,则需要根据Wi-Fi信号强度计算每个用户终端到新AP之间的距离;根据每个用户终端到新AP之间的距离与对应的用户终端位置信息,得到新AP对应于每个用户终端的多个位置信息;将新AP对应于每个用户终端的多个位置信息进行加权平均,得到新AP的位置信息;将新AP的地址与位置信息存入数据库。 [0051] Preferably, in the step of storage of the new AP, the new AP if corresponding to a plurality of user terminals, each user terminal is required to calculate the distance between the new AP according to the Wi-Fi signal strengths; each user terminal position information to the user terminal corresponding to the distance between the new AP, the new AP to obtain the location information corresponding to each user terminal; new AP plurality of position information corresponding to each user terminal in the weighted average, to give the new AP position information; the address with the new AP location information stored in the database.

[0052] 综上所述,以上无线定位技术与系统根据无线信号强度来较为准确地进行定位, 同时允许用户添加新的AP,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 [0052] In summary, the above system with wireless location technology to more accurately locate the wireless signal strength, while allowing the AP to add new users, and further the small positioning system for a wide range of extended positioning system to achieve multiple user terminals sharing purposes. 可见,其不仅可以对用户终端进行及时准确的定位,也可由用户参与来增加新的AP信息,进而将小范围的定位系统扩展为大范围的定位系统,达到多个用户终端共享的目的。 Visible, which can not only timely and accurate positioning of the user terminal, the user may also be involved in the AP to add new information, and thus to extend the range of the small positioning system positioning system for a wide range, the purpose of a plurality of user terminals to share. 特别是针对分层情况,若每一层都有独立的AP,采用以上方案会将每一层的AP信息存入数据库中,由于楼板或其他障碍物的影响,在当前楼层搜索得到的其他层的Wi-Fi信号都会遇到不同程序的衰减,而当前楼层的Wi-Fi信号强度是最强的,根据这一特性,能准确的判断用户终端所在的楼层,并及时将计算得到的位置信息返回给用户终端。 Especially for layered case, when each layer has its own AP, using the above scheme of each layer will AP information stored in the database, or other obstacles due to the floor, the floor in the current search for other layers obtained a Wi-Fi signal attenuation will encounter different programs, and Wi-Fi signal strength of the current floor is the strongest, according to this feature, the user can accurately determine floor terminal is located, and timely calculated position information obtained returned to the user terminal. 据悉,目前没有定位系统针对分层定位,而本定位系统能很好填补这一空缺。 It is reported that there is no hierarchical positioning system for positioning, and this system is well positioned to fill this gap.

[0053] 以上显示和描述了本发明的基本原理、主要特征和本发明的优点。 [0053] The above and described the principles of the invention, the main features and advantages of the present invention. 本领域的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是本发明的原理,在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明的范围内。 Those skilled in the art will appreciate that the present invention is not limited to the above embodiment, the above-described principles and embodiments described in the specification are only embodiments of the present invention, the present invention without departing from the spirit and scope of the invention will have a variety of changes and modifications, changes and modifications within the scope of the invention claimed fall. 本发明要求的保护范围由所附的权利要求书及其等同物界定。 Scope of the invention claimed by the appended claims and equivalents thereof defined.

Claims (8)

1. 一种基于Wi-Fi的无线定位方法,包括获取待定位用户终端定位信息以及根据该定位信息计算用户终端位置信息的步骤,其中所述定位信息包括用户终端所检测到的无线接入点地址和Wi-Fi信号强度,其特征是,还包括新无线接入点入库的步骤,其中新无线接入点为用户终端检测到的且未记录于数据库中的无线接入点,该步骤包括:根据Wi-Fi信号强度计算用户终端到新无线接入点之间的距离; 根据用户终端的位置信息和用户终端到新无线接入点之间的距离,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 A Wi-Fi-based wireless location, comprising obtaining location information of the user terminal to be located and the step of calculating the position information of the user terminal based on the positioning information, wherein the user terminal comprises a location information of the detected wireless access point address and Wi-Fi signal strengths, characterized by further comprising the step of storage of a new wireless access point, wherein a new wireless access point to the user terminal is detected and not recorded in the database and the wireless access point, the step of comprising: calculating according to a user terminal Wi-Fi signal strengths to the distance between the new wireless access point; in accordance with the position information and the user terminal to the user terminal the new distance between the wireless access point, wireless access point to obtain a new position information; address with the new wireless access point position information stored in the database.
2.根据权利要求1所述的基于Wi-Fi的无线定位方法,其特征是,在新无线接入点入库的步骤中,若所述新无线接入点对应多个用户终端,则包括:根据Wi-Fi信号强度计算每个用户终端到新无线接入点之间的距离; 根据每个用户终端到新无线接入点之间的距离与对应的用户终端位置信息,得到新无线接入点对应于每个用户终端的多个位置信息;将所述新无线接入点对应于每个用户终端的多个位置信息进行加权平均,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 The wireless Wi-Fi-based positioning method according to claim 1, wherein, in the step of storage of the new access point, if the new wireless access point corresponding to a plurality of user terminals, comprising the : Wi-Fi signal strength is calculated for each user terminal according to the distance between the new wireless access point; each user terminal to the user terminal position information corresponding to the distance between the new wireless access point, to give a new radio access point corresponding to the plurality of position information of each user terminal; and the new wireless access point corresponding to the plurality of position information of each user terminal in the weighted average to obtain the position information of the new radio access point; new wireless the address of the access point position information stored in the database.
3.根据权利要求1所述的基于Wi-Fi的无线定位方法,其特征是,所述根据定位信息计算用户终端位置信息的步骤包括:根据当前无线接入点地址在数据库中查询得到当前无线接入点的位置信息,其中所述当前无线接入点为用户终端所检测到的且记录于数据库中的无线接入点; 根据Wi-Fi信号强度计算用户终端到当前无线接入点之间的距离; 根据当前无线接入点的位置信息与用户终端到当前无线接入点之间的距离,得到用户终端的位置信息;将得到的用户终端的位置信息通过路由器发送给用户终端。 The wireless Wi-Fi-based positioning method according to claim 1, wherein the step of calculating the position information of the user terminal based on location information comprising: a database query to obtain the current wireless access point according to the current address the position information of the access point, wherein said current wireless access point to the user terminal is detected and recorded in the database, the wireless access point; Wi-Fi is calculated according to the user terminal to the signal strength between the current wireless access point distance; the position information of the current user terminal to the wireless access point distance between the current wireless access point, user terminal position information is obtained; the location information of the user terminal will be sent to the user terminal via a router.
4.根据权利要求3所述的基于Wi-Fi的无线定位方法,其特征是,当用户终端所检测到的且记录于数据库中的无线接入点为多个时,选取Wi-Fi信号强度最强的无线接入点作为后续计算所需的当前无线接入点。 The wireless Wi-Fi-based positioning method according to claim 3, wherein, when a plurality of user terminals detected and recorded in a database of wireless access points, select the Wi-Fi signal strength as most wireless access point subsequent calculations required current wireless access point.
5. 一种基于Wi-Fi的无线定位系统,包括用户终端与服务端,其特征是,所述服务端包括:数据库,其内存储有多个无线接入点地址与对应的位置信息; 路由器,接收用户终端的所检测到的无线接入点地址、Wi-Fi信号强度,并发送和接收用户终端的位置信息;定位服务器,根据接收到的无线接入点地址和Wi-Fi信号强度计算用户终端位置,且根据接收到的无线接入点地址、Wi-Fi信号强度和用户终端的位置信息进行新无线接入点的入库,其中新无线接入点为用户终端检测到的且未记录于数据库中的无线接入点,新无线接入点的入库包括:根据Wi-Fi信号强度计算用户终端到新无线接入点之间的距离; 根据用户终端的位置信息和用户终端到新无线接入点之间的距离,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 A Wi-Fi-based wireless location system, comprising a user terminal and a server, wherein said server comprises: a database having stored therein a plurality of location information and wireless access points corresponding to the address; router , the user terminal receives the detected wireless access point address, Wi-Fi signal strength, and location information transmitting and receiving user terminal; location server calculated according to the received address of the wireless access point and Wi-Fi signal strength user terminal location, and according to the received address of the wireless access point, the location information of Wi-Fi signal strength and storage of new user terminal is a wireless access point, wherein a new wireless access point to the user terminal and not detected records in the database wireless access point, the new wireless access point storage include: Wi-Fi signal strength calculated based on the distance between the user terminal to the new wireless access point; and the position information of the user terminal to the user terminal the distance between the new wireless access point to obtain location information of a new wireless access point; the address of the new wireless access points with the location information stored in the database.
6.根据权利要求5所述的基于Wi-Fi的无线定位系统,其特征是,在新无线接入点入库的过程中,若所述新无线接入点对应多个用户终端,则包括:根据Wi-Fi信号强度计算每个用户终端到新无线接入点之间的距离; 根据每个用户终端到新无线接入点之间的距离与对应的用户终端位置信息,得到新无线接入点对应于每个用户终端的多个位置信息;将所述新无线接入点对应于每个用户终端的多个位置信息进行加权平均,得到新无线接入点的位置信息;将新无线接入点的地址与位置信息存入数据库。 The wireless Wi-Fi positioning system according to claim 5, characterized in that, during the storage of the new wireless access point, if the new wireless access point corresponding to a plurality of user terminals, comprising the : Wi-Fi signal strength is calculated for each user terminal according to the distance between the new wireless access point; each user terminal to the user terminal position information corresponding to the distance between the new wireless access point, to give a new radio access point corresponding to the plurality of position information of each user terminal; and the new wireless access point corresponding to the plurality of position information of each user terminal in the weighted average to obtain the position information of the new radio access point; new wireless the address of the access point position information stored in the database.
7.根据权利要求5所述的基于Wi-Fi的无线定位系统,其特征是,所述定位服务器根据接收到的无线接入点地址和Wi-Fi信号强度计算用户终端位置信息的过程包括:根据当前无线接入点地址在数据库中查询得到当前无线接入点的位置信息,其中所述当前无线接入点为用户终端所检测到的且记录于数据库中的无线接入点; 根据Wi-Fi信号强度计算用户终端到当前无线接入点之间的距离; 根据当前无线接入点的位置信息与用户终端到当前无线接入点之间的距离,得到用户终端的位置信息;将得到的用户终端的位置信息通过路由器发送给用户终端。 The wireless Wi-Fi positioning system according to claim 5, characterized in that, the location server calculating the location information of the user terminal according to the received address of the wireless access point and Wi-Fi signal strengths process comprising: the current access point address query to obtain current location information of the wireless access point in the database, wherein said current wireless access point to the user terminal is detected and recorded in the database according to the wireless access point; the Wi- Fi signal strength calculating the distance between the user terminal to the current wireless access point; the position information of the current user terminal to the access point the distance between the current wireless access point, to obtain location information of the user terminal; obtained location information of the user terminal to the user terminal via a router.
8.根据权利要求7所述的基于Wi-Fi的无线定位系统,其特征是,当用户终端所检测到的且记录于数据库中的无线接入点为多个时,选取Wi-Fi信号强度最强的无线接入点作为后续计算所需的当前无线接入点。 8. The wireless Wi-Fi positioning system according to claim 7, wherein, when the user terminal is detected and recorded in a database when a plurality of wireless access points, select the Wi-Fi signal strength as most wireless access point subsequent calculations required current wireless access point.
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