CN103369671A - Close-range positioning system and method based on WIFI - Google Patents
Close-range positioning system and method based on WIFI Download PDFInfo
- Publication number
- CN103369671A CN103369671A CN2013102974456A CN201310297445A CN103369671A CN 103369671 A CN103369671 A CN 103369671A CN 2013102974456 A CN2013102974456 A CN 2013102974456A CN 201310297445 A CN201310297445 A CN 201310297445A CN 103369671 A CN103369671 A CN 103369671A
- Authority
- CN
- China
- Prior art keywords
- wireless aps
- wifi
- client
- closely
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a close-range positioning method based on WIFI. The method includes the steps that an RSSI value of a wireless AP needing to be positioned is acquired at a fixed point, the position relation between the wireless AP needing to be positioned and the point is calculated according to the RSSI value acquired at the point, and position information of the wireless AP is obtained. The invention further provides a close-range positioning system based on WIFI. The system comprises a positioning server, a client and at least one wireless AP, wherein the client is used for acquiring the RSSI value of the wireless AP, the positioning server calculates the position relation between the client and the wireless AP according to the RSSI value acquired by the client, and the position information of the wireless AP is obtained according to the position relation. According to the close-range positioning system and method based on WIFI, other networks or facilities do not need to be reconstructed, installing and implementing can be flexibly, conveniently and fast performed, and meanwhile the indoor and outdoor highest accurate positioning can reach 2.5m.
Description
Technical field
The present invention relates to a kind of closely navigation system and localization method, particularly a kind of closely navigation system and localization method based on WIFI.
Background technology
Along with the development of WiFi technology, the promotion of wireless city, the WiFi technology is widely used in industry-by-industry.The same development in positioning service market is rapid, and the positioning service demand increases rapidly.Because the gps satellite location has need to be in the more accurate location of ability, place relatively spacious, that skyscraper is not intensive, and indoors can't use, the characteristics that power consumption is higher, therefore utilize the WiFi network that extensively exists, position and become best-of-breed technology and select being in the intensive or indoor target of housing-group.Position by the WiFi network, can remedy GPS in the restriction of building dense or indoor application, enlarge application industry and the scope of positioning service, improve positioning accuracy, reduce lower deployment cost, improve utilization rate of equipment and installations, strengthen the rescue ability of solution of emergent event, have important social effect.
Simultaneously, the continuous increase of China and even global plant layout, indoor environment becomes increasingly complex, and existing environmental unit can't satisfy effective guiding of factory flow, has reduced the efficiency of management.This installs built-in WiFi positioner, and accomplishes simultaneously the active guiding of management process, really accomplishes omnidistance guiding factory personnel, realizes flowing in order.
And traditional factory management system has just been realized the flow process of the ERP of higher level face, and to flow of personnel management aspect very imperfection.
Summary of the invention
In order to overcome the defective of prior art, the invention provides a kind of closely localization method based on WIFI, may further comprise the steps:
Obtain the RSSI value of the wireless aps that needs the location at a fixed point place;
Calculate the wireless aps of needs location and the position relationship of this point according to the RSSI value that obtains at this point, obtain the positional information of described wireless aps;
Wherein said this fixed point communicates by WIFI with wireless aps and is connected.
Preferably, set up a cartographic model, the positional information of described wireless aps is shown at described cartographic model.
Preferably, this is transmitted in this WIFI scope the positional information of described wireless aps by WIFI communication.
Preferably, the described wireless aps that needs to locate is one or more.
Preferably, when described wireless aps is a plurality of, each wireless aps is distinguished.
Preferably, the mode of distinguishing described wireless aps comprises that the MAC Address, the IP address that obtain described wireless aps distinguish described wireless aps.
The present invention also provides a kind of closely navigation system based on WIFI, and it comprises location-server, client and at least one wireless aps, and wherein said client and wireless aps communicate to connect by WIFI;
Described client is used for obtaining the RSSI value of described wireless aps;
The RSSI value that described location-server obtains according to described client calculates the position relationship between described client and the described wireless aps, obtains the positional information of described wireless aps according to this position relationship.
Preferably, also comprise handheld terminal, described handheld terminal is connected with described client, location-server respectively, and described handheld terminal is used for sending the positional information of obtaining the instruction of RSSI value and receiving described wireless aps to described client.
Preferably, have the cartographic model of this WIFI coverage on the described handheld terminal, described positional information shows at described cartographic model.
Preferably, also comprise unified service managing server, it is used for sending director information to described handheld terminal, and described director information shows at the cartographic model of described handheld terminal.
Preferably, also comprise a monitor, described monitor is used for obtaining and showing the position relationship of described wireless aps and client.
Preferably, described client comprises DEVICE unit, WLANSCAN unit and SOCKET communication clients end unit;
Described DEVICE unit is used for obtaining the network interface card information of wireless aps;
Described WLANSCAN unit is used for obtaining the RSSI value of described wireless aps;
Described SOCKET communication clients end unit is used for communicating with the outside.
Preferably, described location-server module comprises SOCKET communication unit, engine of positioning unit, database manipulation unit and probability calculation unit;
Described SOCKET communication unit is used for and PERCOM peripheral communication;
Described engine of positioning unit is used for measuring and obtaining in real time the RSSI value of wireless aps;
Database is used for storage RSSI mean value and the standard deviation corresponding with mean value;
The position that described probability calculation unit calculates wireless aps according to the RSSI mean value that stores in the RSSI value of current actual measurement, the database module and the standard deviation corresponding with mean value.
Compared with prior art, beneficial effect of the present invention is as follows:
1, based on the Wi-Fi network of universal standard, need not read write line, need not again build other networks or facility, installation is implemented fast flexibly and easily, reduces cost;
2, integrate the multiple functions such as real-time location, history run trace playback and analysis, label instant alarming, label disappearance warning, turnover prohibited area auto-alarming, intelligent sensing control and warning;
3, remote identification is outdoor more than 300 meters, indoor 100 meters;
4, the indoor and outdoor precise positioning reaches as high as 2.5 meters;
5, according to accurate position location, can among a small circle, call out the employee;
6, security, wireless Internet access, in real time locating and monitoring, the comprehensive system that is integrated with camera interlock, intelligent sensing, gate inhibition, work attendance, E-consumer, video, voice have been gathered.
Certainly, implement arbitrary product of the present invention and might not need to reach simultaneously above-described all advantages.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
The location-server modular structure schematic diagram that Fig. 2 provides for the embodiment of the invention;
Fig. 3 is wireless signal attenuation model schematic diagram;
The client modules structural representation that Fig. 4 provides for the embodiment of the invention.
Embodiment
Embodiment one
The embodiment of the invention provides a kind of closely localization method based on WIFI, and it may further comprise the steps:
Obtain the RSSI value of the wireless aps that needs the location at a fixed point place;
Calculate the wireless aps of needs location and the position relationship of this point according to the RSSI value that obtains at this point, obtain the positional information of described wireless aps;
Wherein said this fixed point communicates by WIFI with wireless aps and is connected.
In this example, needing the wireless aps of location all is the coverage that is positioned at this WIFI network, and it can be a plurality of needing the wireless aps quantity of location, also can be one.
When the wireless aps quantity of needs location when being a plurality of, obtain the network interface card information of each wireless aps, comprise the MAC Address, the IP address that obtain described wireless aps, then the MAC Address by each wireless aps and/or IP address etc. are distinguished described wireless aps.The difference mode of each wireless aps do not limited and this routine institute act mode herein, can carry out mark to each wireless aps by alternate manner yet and distinguish.This method can also be by setting up a cartographic model, and the positional information of described wireless aps is shown at described cartographic model.This cartographic model is the cartographic model of WIFI network's coverage area, to the detailed modeling of internal environment information of this network area.
The present invention can also transmit in this WIFI scope the positional information of described wireless aps by WIFI communication; Can be transmitted to a plurality of receiving terminals, receiving terminal can use the positional information of wireless aps to position, and also can be used for monitoring.Transmit by the WIFI network, do not need to add extra communication network device, cost obtains very large saving.
Embodiment two
A kind of closely navigation system based on WIFI, it comprises location-server, client and at least one wireless aps, wherein said client and wireless aps communicate to connect by WIFI;
Described client is used for obtaining the RSSI value of described wireless aps;
The RSSI value that described location-server obtains according to described client calculates the position relationship between described client and the described wireless aps, obtains the positional information of described wireless aps according to this position relationship.
The embodiment of the invention also comprises handheld terminal, and described handheld terminal is connected with described client, location-server respectively, and described handheld terminal is used for sending the positional information of obtaining the instruction of RSSI value and receiving described wireless aps to described client.When handheld terminal sends instruction to client, client begins to receive the RSSI value, location-server by client to the RSSI value calculate the position relationship of client and wireless aps, thereby determine the position of wireless aps, location-server is sent to handheld terminal with the positional information of the wireless aps that calculates.
In the present embodiment, have the cartographic model of this WIFI coverage on the described handheld terminal, this cartographic model is based on that environmental information in the coverage of WIFI network sets up, and handheld terminal is presented at the positional information of the wireless aps that obtains on the cartographic model.
In the present embodiment, this navigation system also comprises unified service managing server, and it is used for sending director information to described handheld terminal, and described director information shows that at the cartographic model of described handheld terminal guiding handheld terminal user needs the step of execution.
This navigation system also comprises a monitor, and described monitor is used for obtaining and showing the position relationship of described wireless aps and client.This monitor also is the positional information by the WIFI Network Capture, and monitor is mainly used in Control Room to the monitoring of each wireless aps.
Described client comprises DEVICE unit, WLANSCAN unit and SOCKET communication clients end unit;
Described DEVICE unit is used for obtaining the network interface card information of wireless aps;
Described WLANSCAN unit is used for obtaining the RSSI value of described wireless aps;
Described SOCKET communication clients end unit is used for communicating with the outside.
The customer end adopted Android system that the embodiment of the invention provides, this system stability, powerful, extensibility is strong, as shown in Figure 4, the described client modules that the embodiment of the invention provides comprises DEVICE unit, WLANSCAN unit and SOCKET communication clients end unit, and wherein the Device unit is used for calling wireless network card;
Interface function: Deviceinfo;
Type: without input, return value is character array;
Core technology: SDK with the network interface card information of can obtaining and call the api function of network interface card;
The Wlanscan unit is used for realizing that BSSID and RSSI obtain;
Interface function: GetBSSID;
Type: without input, return value is character array:
Core technology: SDK with the api function that obtains BSSID, MAC Address and RSSI:
The Socket communication customer end:
Interface function: C1ient;
Type: be input as shaping, without return value;
Core technology: the Socket communication technology.
As shown in Figure 2, described location-server module comprises SOCKET communication unit, engine of positioning unit, database manipulation unit and probability calculation unit;
Described SOCKET communication unit is used for and PERCOM peripheral communication;
Described engine of positioning unit is used for measuring and obtaining in real time the RSSI value of wireless aps;
Database is used for storage RSSI mean value and the standard deviation corresponding with mean value;
The position that described probability calculation unit calculates wireless aps according to the RSSI mean value that stores in the RSSI value of current actual measurement, the database module and the standard deviation corresponding with mean value.Concrete,
The socket communication unit, its interface function: unsigned _ _ stdcall sckserver (SOCKET sckid), parameter type is that input parameter is the identifier of socket communication, and without return parameters, it is the socket communication under the Windows operating system;
The engine of positioning unit, its interface function is: and void location (char RSSI_AVG[AP_Num] [2], char result_out), parameter type is: input parameter is the two-dimensional array of a character string type, the row size can record the wireless aps number of signal for this point, the row size is two, being used for storing this point that this point records has the signal strength signal intensity mean value of each wireless aps of signal, output parameter is a character string, be positioning result, mainly comprise the parameters such as transverse and longitudinal coordinate, it uses the experience database localization method of Based on Probability model;
The database manipulation unit, its interface function is: void dboperation (int RSSI, char*MAC), parameter type is: input parameter be AP MAC Address and record AP in the signal strength signal intensity of this point,
It is based on the database manipulation of ODBC and management;
The probability calculation unit, its interface function is: int prob-cal (int RSSI, int RSSI_AVG, int RSSI_DEV), parameter type is: input parameter is respectively the RSSI value of current actual measurement, the RSSI mean value that stores in the database and the standard deviation corresponding with mean value, return value is these three probable values that value is calculated according to Gaussian distribution formula, location Calculation is specially: the probability calculation module is according to input parameter: the RSSI value of current actual measurement, the RSSI mean value that stores in the database module and the standard deviation corresponding with mean value, calculate probable value by Gaussian distribution formula, determine the position according to probable value, finish the location;
Native system software adopts socket to solve the communication issue of server end and client.Socket communication is mainly used in two based on the intercommunication of the application program of ICP/IP protocol.The Socket interface is the API of TCP/IP network, the Socket interface definition many functions or routine, the programmer can develop application program on the TCP/IP network with them.Application program based on ICP/IP protocol adopts the Client/Server pattern usually.In the time will adopting socket communication between two application programs, at first can between client and server, set up a socket and connect.The port of first by server end according to the IP address of self and confer or generally acknowledging of connecting arranges the parameter that socket communicates by letter and enters the listening port wait client-side service request stage; Client can connect with the port whereabouts server request of being connected or generally acknowledging according to the IP address of server.When server is waited until client-side service request at listening port, server can connect or refuse according to corresponding situation and connect.Only have connection request arrival when the server listening port is waited for client-side service request of client can successfully set up the socket connection.Application program can assist 1 to the other side's messaging according to the needs of oneself after connecting foundation.The streaming communication protocol of using socket communication can realize that the high-speed traffic of location-server and client, simultaneously use have functions such as EDC error detection and correction can guarantee that locator data correctly sends to timely, guarantees real-time and the accuracy of navigation system.
There is the attenuation model relation in the signal strength signal intensity of wireless signal with propagation distance under the indoor environment of the present invention in short distance, can calculate propagation distance by signal strength signal intensity, and therefore, this method is take the location technology of signal strength signal intensity (RSSI) as the basis.
Wireless signal is in transmission course, and the power level and the transmission range that receive signal exist certain variation relation, find out the variation relation in the specific environment, just can be applied to location technology.
High-frequency wireless signals can be regarded as to different directions and emitted beam, rely on again the detailed modeling to indoor environment information, each root ray is followed the tracks of to set up wireless signal propagation model.When wireless signal during at free-space propagation, a ray of transceiver can be thought to connect in its path, and available Ferris formula calculates the radio wave propagation loss that free sky is asked:
Fig. 3 is large scale path attenuation model
Be formulated as follows:
PL=-Gr-Gt+20log(4πR／λ)=Gr+Gt+22+20log(R／λ)
Gr and Gt represent respectively reception antenna and transmitter antenna gain (dBi) (dB) in the formula, and R is the distance between the transceiver, and entering is wavelength.When enter=during 12.3cm (f=2.44GHz) can draw:
PL2.44=-unit of Gr – Gt+40.2+20Log (R) R is rice.
When the distance between the transceiver was very near, the propagation model of free space was close with actual propagation.For example the distance between antenna is less than them during apart from the height on ground in outdoor environment, and reflected wave can not consist of it and disturbs.
The present invention is the WiFi network based on universal standard, need not read write line, need not again build other networks or facility, and installation is implemented fast flexibly and easily, reduces cost;
Integrate the multiple functions such as real-time location, history run trace playback and analysis, label instant alarming, label disappearance warning, turnover prohibited area auto-alarming, intelligent sensing control and warning;
Remote identification, outdoor more than 300 meters, indoor 100 meters;
The indoor and outdoor precise positioning reaches as high as 2.5 meters;
According to accurate position location, can among a small circle, call out the employee;
Gathered security, wireless Internet access, in real time locating and monitoring, with camera interlock, intelligent sensing,
The comprehensive system that gate inhibition, work attendance, E-consumer, video, voice are integrated.
More than the disclosed preferred embodiment of the present invention just be used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and only is described embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiment are chosen and specifically described to this specification, is in order to explain better principle of the present invention and practical application, thereby the technical field technical staff can understand and utilize the present invention well under making.The present invention only is subjected to the restriction of claims and four corner and equivalent.
Claims (13)
1. the closely localization method based on WIFI is characterized in that,
Obtain the RSSI value of the wireless aps that needs the location at a fixed point place;
Calculate the wireless aps of needs location and the position relationship of this point according to the RSSI value that obtains at this point, obtain the positional information of described wireless aps;
Wherein said this fixed point communicates by WIFI with wireless aps and is connected.
2. the closely localization method based on WIFI as claimed in claim 1 is characterized in that, sets up a cartographic model, and the positional information of described wireless aps is shown at described cartographic model.
3. the closely localization method based on WIFI as claimed in claim 1 is characterized in that, this is transmitted in this WIFI scope the positional information of described wireless aps by WIFI communication.
4. the closely localization method based on WIFI as claimed in claim 1 is characterized in that, the described wireless aps that needs to locate is one or more.
5. the closely localization method based on WIFI as claimed in claim 4 is characterized in that, when described wireless aps is a plurality of, each wireless aps is distinguished.
6. the closely localization method based on WIFI as claimed in claim 5 is characterized in that, the mode of distinguishing described wireless aps comprises that the MAC Address, the IP address that obtain described wireless aps distinguish described wireless aps.
7. the closely navigation system based on WIFI is characterized in that, comprises location-server, client and at least one wireless aps, and wherein said client and wireless aps communicate to connect by WIFI;
Described client is used for obtaining the RSSI value of described wireless aps;
The RSSI value that described location-server obtains according to described client calculates the position relationship between described client and the described wireless aps, obtains the positional information of described wireless aps according to this position relationship.
8. the closely navigation system based on WIFI as claimed in claim 7, it is characterized in that, also comprise handheld terminal, described handheld terminal is connected with described client, location-server respectively, and described handheld terminal is used for sending the positional information of obtaining the instruction of RSSI value and receiving described wireless aps to described client.
9. the closely navigation system based on WIFI as claimed in claim 8 is characterized in that, have the cartographic model of this WIFI coverage on the described handheld terminal, described positional information shows at described cartographic model.
10. the closely navigation system based on WIFI as claimed in claim 9 is characterized in that, also comprises unified service managing server, and it is used for sending director information to described handheld terminal, and described director information shows at the cartographic model of described handheld terminal.
11. the closely navigation system based on WIFI as claimed in claim 7 is characterized in that, also comprises a monitor, described monitor is used for obtaining and showing the position relationship of described wireless aps and client.
12. the localization method of a kind of closely navigation system based on WIFI as claimed in claim 7 is characterized in that described client comprises DEVICE unit, WLANSCAN unit and SOCKET communication clients end unit;
Described DEVICE unit is used for obtaining the network interface card information of wireless aps, and this network interface card information comprises IP address and the MAC Address of wireless aps;
Described WLANSCAN unit is used for obtaining the RSSI value of described wireless aps;
Described SOCKET communication clients end unit is used for communicating with the outside.
13. the localization method of a kind of closely navigation system based on WIFI as claimed in claim 6 is characterized in that described location-server module comprises SOCKET communication unit, engine of positioning unit, database manipulation unit and probability calculation unit;
Described SOCKET communication unit is used for and PERCOM peripheral communication;
Described engine of positioning unit is used for measuring and obtaining in real time the RSSI value of wireless aps;
Database is used for storage RSSI mean value and the standard deviation corresponding with mean value;
The position that described probability calculation unit calculates wireless aps according to the RSSI mean value that stores in the RSSI value of current actual measurement, the database module and the standard deviation corresponding with mean value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102974456A CN103369671A (en) | 2013-07-16 | 2013-07-16 | Close-range positioning system and method based on WIFI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102974456A CN103369671A (en) | 2013-07-16 | 2013-07-16 | Close-range positioning system and method based on WIFI |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103369671A true CN103369671A (en) | 2013-10-23 |
Family
ID=49369943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102974456A Pending CN103369671A (en) | 2013-07-16 | 2013-07-16 | Close-range positioning system and method based on WIFI |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103369671A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644878A (en) * | 2013-12-24 | 2014-03-19 | 西安中科光电精密工程有限公司 | Indoor space measuring and positioning system, standard bar and relative orienting method |
| CN104503286A (en) * | 2014-12-26 | 2015-04-08 | 上海斐讯数据通信技术有限公司 | Intelligent control system and intelligent control method |
| CN104936285A (en) * | 2014-03-21 | 2015-09-23 | 深圳市云家端关爱科技有限公司 | Wifi positioning method and apparatus |
| CN105160722A (en) * | 2015-10-15 | 2015-12-16 | 上海斐讯数据通信技术有限公司 | Attendance checking system and method |
| CN105472729A (en) * | 2014-09-11 | 2016-04-06 | 广州兰大晨曦企业孵化器有限公司 | Big data processing system and method based on WiFi indoor positioning technology |
| CN106454735A (en) * | 2016-10-28 | 2017-02-22 | 维沃移动通信有限公司 | Method for processing WIFI information and mobile terminal |
| CN106470478A (en) * | 2015-08-20 | 2017-03-01 | 西安云景智维科技有限公司 | A kind of location data processing method, device and system |
| CN107318160A (en) * | 2017-06-22 | 2017-11-03 | 上海斐讯数据通信技术有限公司 | A kind of method and system for finding, reporting wireless access points position |
| CN107784814A (en) * | 2016-08-24 | 2018-03-09 | 浙江汉朔电子科技有限公司 | Data interaction system |
| CN111405466A (en) * | 2020-03-20 | 2020-07-10 | Oppo广东移动通信有限公司 | Site identification method, arrival reminding method, device, terminal and storage medium |
| CN111836360A (en) * | 2020-07-27 | 2020-10-27 | 海口亿游网络科技有限公司 | Positioning method and system based on WiFi |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209382A (en) * | 2011-05-18 | 2011-10-05 | 杭州电子科技大学 | Wireless sensor network node positioning method based on received signal strength indicator (RSSI) |
| KR101154749B1 (en) * | 2009-11-27 | 2012-06-11 | 삼성에스디에스 주식회사 | System and method for enabling seamless location estimation based on wireless lan |
| CN102761913A (en) * | 2011-04-26 | 2012-10-31 | 航天信息股份有限公司 | Positioning method of wireless signal transmission parameter determination based on area division |
| CN102883428A (en) * | 2012-08-07 | 2013-01-16 | 广州星博信息技术有限公司 | ZigBee wireless sensor network-based node positioning method |
-
2013
- 2013-07-16 CN CN2013102974456A patent/CN103369671A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101154749B1 (en) * | 2009-11-27 | 2012-06-11 | 삼성에스디에스 주식회사 | System and method for enabling seamless location estimation based on wireless lan |
| CN102761913A (en) * | 2011-04-26 | 2012-10-31 | 航天信息股份有限公司 | Positioning method of wireless signal transmission parameter determination based on area division |
| CN102209382A (en) * | 2011-05-18 | 2011-10-05 | 杭州电子科技大学 | Wireless sensor network node positioning method based on received signal strength indicator (RSSI) |
| CN102883428A (en) * | 2012-08-07 | 2013-01-16 | 广州星博信息技术有限公司 | ZigBee wireless sensor network-based node positioning method |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644878B (en) * | 2013-12-24 | 2017-02-08 | 西安中科光电精密工程有限公司 | Relative orienting method in indoor space measuring and positioning system, |
| CN103644878A (en) * | 2013-12-24 | 2014-03-19 | 西安中科光电精密工程有限公司 | Indoor space measuring and positioning system, standard bar and relative orienting method |
| CN104936285A (en) * | 2014-03-21 | 2015-09-23 | 深圳市云家端关爱科技有限公司 | Wifi positioning method and apparatus |
| CN105472729A (en) * | 2014-09-11 | 2016-04-06 | 广州兰大晨曦企业孵化器有限公司 | Big data processing system and method based on WiFi indoor positioning technology |
| CN104503286A (en) * | 2014-12-26 | 2015-04-08 | 上海斐讯数据通信技术有限公司 | Intelligent control system and intelligent control method |
| CN104503286B (en) * | 2014-12-26 | 2017-07-14 | 上海斐讯数据通信技术有限公司 | Intelligence control system and its control method |
| CN106470478A (en) * | 2015-08-20 | 2017-03-01 | 西安云景智维科技有限公司 | A kind of location data processing method, device and system |
| CN106470478B (en) * | 2015-08-20 | 2020-03-24 | 西安云景智维科技有限公司 | Positioning data processing method, device and system |
| CN105160722A (en) * | 2015-10-15 | 2015-12-16 | 上海斐讯数据通信技术有限公司 | Attendance checking system and method |
| CN107784814A (en) * | 2016-08-24 | 2018-03-09 | 浙江汉朔电子科技有限公司 | Data interaction system |
| CN106454735A (en) * | 2016-10-28 | 2017-02-22 | 维沃移动通信有限公司 | Method for processing WIFI information and mobile terminal |
| CN107318160A (en) * | 2017-06-22 | 2017-11-03 | 上海斐讯数据通信技术有限公司 | A kind of method and system for finding, reporting wireless access points position |
| CN107318160B (en) * | 2017-06-22 | 2020-12-22 | 金华市智甄通信设备有限公司 | Method and system for searching and reporting position of wireless access point |
| CN111405466A (en) * | 2020-03-20 | 2020-07-10 | Oppo广东移动通信有限公司 | Site identification method, arrival reminding method, device, terminal and storage medium |
| CN111836360A (en) * | 2020-07-27 | 2020-10-27 | 海口亿游网络科技有限公司 | Positioning method and system based on WiFi |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103369671A (en) | Close-range positioning system and method based on WIFI | |
| KR100994840B1 (en) | Position determination method and system based on wlan rssi value | |
| WO2017220031A1 (en) | Location method and apparatus | |
| CN109283564B (en) | Mobile terminal positioning method and system | |
| CN104270194A (en) | Visible light indoor positioning method | |
| CN109975758A (en) | Wi-Fi blue tooth integrated base station location system | |
| US10383083B2 (en) | Wireless local area network based positioning method and device | |
| CN105472729A (en) | Big data processing system and method based on WiFi indoor positioning technology | |
| CN109254262A (en) | A kind of localization method and system of intelligent mine lamp | |
| CN104849741A (en) | GPS and radio frequency technology-based hybrid location method | |
| Kanakaraja | IoT enabled BLE and LoRa based indoor localization without GPS | |
| US20230168334A1 (en) | Indoor Positioning Method and Device | |
| CN111076707B (en) | Antenna attitude measurement method, device and system and storage medium | |
| Sun et al. | Localization of WiFi devices using unmanned aerial vehicles in search and rescue | |
| CN114758364B (en) | Industrial Internet of things scene fusion positioning method and system based on deep learning | |
| Yuen et al. | Wi-fi and bluetooth contact tracing without user intervention | |
| CN112543421A (en) | Positioning method, device, equipment and storage medium | |
| Berkvens et al. | Comparing 433 and 868 MHz Active RFID for indoor localization using multi-wall model | |
| CN205693895U (en) | Wireless location system based on orientation Wi Fi | |
| CN110809239A (en) | Pipe gallery personnel positioning method, server and system | |
| WO2021014897A1 (en) | Area assessment system, area assessment method, and program | |
| CN212876117U (en) | Accurate positioning system in specific area | |
| KR102466185B1 (en) | System for controlling of operations in smart farm using indoor positioning and method thereof | |
| CN216526308U (en) | Positioning system | |
| Belej et al. | Developing a Local Positioning Algorithm Based on the Identification of Objects in a Wi-Fi Network of the Mall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131023 |