CN110401913A - A kind of indoor orientation method based on low-power consumption bluetooth - Google Patents
A kind of indoor orientation method based on low-power consumption bluetooth Download PDFInfo
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- CN110401913A CN110401913A CN201910649277.XA CN201910649277A CN110401913A CN 110401913 A CN110401913 A CN 110401913A CN 201910649277 A CN201910649277 A CN 201910649277A CN 110401913 A CN110401913 A CN 110401913A
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- data packet
- broadcast data
- bluetooth
- bluetooth equipment
- mobile terminal
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Classifications
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- 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
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- 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
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- 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
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of methods for improving indoor wireless location efficiency based on bluetooth technology with low power consumption.Firstly, bluetooth equipment sends broadcast data packet by time interval of T3, mobile terminal regularly sends broadcast data packet in bluetooth equipment region；Secondly, reducing after bluetooth equipment receives the broadcast data packet of mobile terminal transmission and itself sending the time interval of broadcast data packet to T4；Then, the broadcast data packet of bluetooth equipment near mobile scanning terminal, and maximum 3 data packets of RSSI (received signal strength indicator) value are chosen, parse the coordinate information and floor information of the inside, location algorithm processing is made to coordinate information, and then obtains itself position coordinates；Finally, mobile terminal is far from original region, the RSSI value that then bluetooth equipment in original region scans in the bluetooth data packets broadcasted to mobile terminal whithin a period of time is respectively less than given threshold N, then sends broadcast data packet by time interval of T3 before being restored to.
Description
Technical field
The present invention relates to wireless location system, in particular to a kind of indoor locating system based on low-power consumption bluetooth.
Background technique
Low-power consumption bluetooth (Bluetooth Low Energy, BLE) is a kind of short distance, low cost and low-power consumption, can be mutual
The wireless communication technique of operation works in the 2.4GHz ISM radio frequency band for exempting from license.
Indoors in location technology, the ratio of bluetooth beacon location technology is wide, but transmission bluetooth that can only be unidirectional
Broadcast data packet all sends Bluetooth broadcast data regardless of mobile terminal device is not positioning nearby with Fixed Time Interval
Packet, thus cause positioning not in time, the not high problem of precision.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of indoor locating systems based on low-power consumption bluetooth, effectively improve
Position real-time and positioning accuracy.
This system is related to 3 modules: bluetooth equipment, server and mobile terminal.
To solve the above-mentioned problems, the indoor locating system of low-power consumption bluetooth of the invention realizes to include four steps:
Step 1: bluetooth equipment sends broadcast data packet by time interval of T3, mobile terminal in bluetooth equipment region, with
Time interval T1 sends broadcast data packet；
Specifically, broadcast data packet transmitted by bluetooth equipment, content include:
A) the corresponding unique identifier UUID of bluetooth equipment, a UUID and destination locations name correspond；
B) position coordinate, including place floor and the two-dimensional coordinate value of position；
C) broadcast time interval T3 under ideal case；
D) the broadcast time interval T4 under working condition；
Specifically, the random address of itself is arranged before sending broadcast packet in the bluetooth on mobile terminal, then setting is wide
The Self address type broadcast in parameter is casual cnalogy, retransmits broadcast data packet later, content includes: the random address of bluetooth
(needing to arrange an address with bluetooth equipment here, herein by taking 0x112233445566 as an example)；
Step 2: after bluetooth equipment receives the broadcast data packet of mobile terminal transmission, parsing content, compare Adv
Whether whether the Bluetooth address in report is consistent with the Bluetooth address in Adv data, and be all 0x112233445566.Such as
Fruit is then to reduce itself to send the time interval of broadcast data packet to T4；Otherwise, ignore this packet；
Step 3: the broadcast data packet of bluetooth equipment near mobile scanning terminal, and choose 3 strongest data of RSSI value
Packet parses the coordinate information and floor information of the inside, divides 3 kinds of situations here:
Each of a) not in same floor；
B) only have 2 in same floor；
C) 3 all in same floor；
For a), being difficult to determine its position, can directly ignore；
For b), then to the two equipment, carrying out two-point locating algorithm, obtaining the approximate location of mobile terminal；
For c), making three side location algorithms to coordinate information, calculating the midpoint coordinates of 3 round points of tangency or public string,
And then triadic mean value method is used, obtain the coordinate value of self-position；
Step 4: mobile terminal is far from original region, then the bluetooth equipment in original region is scanned in timer T and arrived
RSSI value in the bluetooth data packets that mobile terminal is broadcasted is less than given threshold, then before being restored to using T3 as time interval
Send broadcast data packet.
Detailed description of the invention
Fig. 1 is the flow chart that indoor locating system is realized；
Fig. 2 is that mobile terminal location realizes schematic diagram；
Fig. 3 is that Bluetooth device operation realizes schematic diagram；
Fig. 4 is the entire block diagram that indoor locating system is realized；
Fig. 5 is that three sides position schematic diagram；
Fig. 6 is two circle intersection gained public string midpoint schematic diagrames；
Specific embodiment
Present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
The flow chart realized the present invention is based on low-power consumption bluetooth indoor locating system is as shown in Figure 1.The following steps are included:
S101: user opens the electronic map in market on mobile terminals, and mobile terminal refers to smart phone, PAD here
Deng the product with low-power consumption bluetooth function；
S102: mobile terminal configures the parameter of bluetooth, and the random address including bluetooth is arranged is broadcasted and scanned
Time interval parameter；
S103: mobile terminal inputs destination title, such as retail shop's name, and there are a database, retail shop's name in electronic map backstage
It is corresponded with bluetooth UUID；
S104: whether destination is effective, and electronic map can search whether matching in background data base, mismatches just still
So return to S103；Otherwise, corresponding position is shown on the electronic map, and continues next step S105；
S105: positioning itself position, can first scan bluetooth equipment here, then according to the Bluetooth broadcast number received
It sorts according to the RSSI value of packet；The bluetooth equipment for selecting 3 highest RSSI values, using trilateration come the position of mobile terminal
It calculates, and shows on the electronic map；
S106: according to destination address position and the position of mobile terminal, rough navigation routine is shown；
Whether S107: arriving at the destination, and is less than L (1~4) rice with the bluetooth equipment distance on mobile terminal and destination address
When, as judgment basis, such as less than L meters, then enter S108；Otherwise S105 is gone successively to, route is constantly updated；
S108: navigation terminates, and the bluetooth module of mobile terminal is gone off the air and scanning work.
Specifically, being directed to S105, realize that the principle of positioning is as shown in Figure 2.The following steps are included:
S201: mobile scanning terminal bluetooth equipment, and broadcast data packet is sent by the time cycle of T1；
S202: 3 maximum bluetooth equipments of RSSI value are chosen by the time cycle of T2, and obtain related data information, are wrapped
Include the relative coordinate of bluetooth equipment, place floor；
S203: it determines floor locating for mobile terminal, and calculates at a distance from 3 bluetooth equipments.
Specifically, the method for determining floor locating for mobile terminal is that 2 or more in 3 bluetooth equipments of selection set
Standby floor information is consistent, has determined that locating floor.
Specifically, calculating the range formula with mobile terminal according to RSSI value:
D=10^ ((abs (RSSI)-A)/(10*N))
Wherein, d indicates distance, unit rice, signal strength when A is represented apart from one meter of bluetooth equipment, and RSSI indicates to obtain
Bluetooth broadcast data packet signal strength indication, N indicates environment to the attenuation coefficient of signal, depending on specific environment.
S204: according to the coordinate information of 3 bluetooth equipments and they at a distance from mobile terminal, it is fixed using trilateration
Position method, is calculated the relative coordinate of mobile terminal on the electronic map.
The application principle figure of trilateration positioning is as shown in Figure 5.Black region is exactly the region where mobile terminal.
Two circle intersections, as shown in fig. 6, setting unknown point position as the coordinate of D is (x, y), with r1It is the center of circle for radius, M
Circle, and with r2Two o'clock B and C are intersected at for the circle that radius, N are the center of circle, MN and BC meet at D.The coordinate of M and N is respectively (x1,
y1),(x2,y2).It is available according to Pythagorean theorem:
MN=MD+ND
NC2=CD2+ND2
MC2=CD2+MD2
It solves:
MD=MN/2+ (MC2-NC2)/2MN
The coordinate of D is acquired under a proportional relationship:
Then, same method finds out the midpoint coordinate of the public string of other two kinds of circles intersection.
Then the coordinate of the method by being averaging to three coordinates, acquisition is exactly the approximate location of current mobile terminal
Coordinate.
Specifically, principles of bluetooth device operation is as shown in Figure 3.The following steps are included:
S301: bluetooth equipment sends broadcast data packet by time interval of T3, this is that do not having mobile terminal indoor navigation
In the case of working condition；
S302: bluetooth equipment receives the Bluetooth broadcast data packet of mobile terminal, if it is not, then directly ignoring；If so,
Then it is further processed；
S303: if the RSSI value for the broadcast packet that the mobile terminal bluetooth received is sent is less than given threshold N, illustrate
Mobile device is far from bluetooth equipment, and at this moment, bluetooth equipment sends broadcast data packet by time interval of T3；If the shifting received
The RSSI value for the broadcast packet that dynamic terminal Bluetooth is sent is greater than or equal to given threshold N, then illustrates that mobile device is also set in bluetooth
Near standby, at this moment, bluetooth equipment sends broadcast data packet by time interval of T4, as shown in S304 in figure；
S304: bluetooth equipment sends broadcast data packet by time interval of T4, and the bluetooth for continuing to mobile terminal is wide
Unicast packets；
Further, illustrate that T3 and T4, T3=n*T4, n are greater than 1 integer.When bluetooth equipment is using T4 as time interval
When sending broadcast data packet, mobile terminal side will more timely get the broadcast data package informatin of bluetooth equipment, according to RSSI
Value determines at a distance from bluetooth equipment, and then utilizes trilateration positioning mode, and timely update itself location information.
The present invention is based on the indoor positionings of low-power consumption bluetooth during realization, is related to 3 parts, as shown in figure 4, specifically
Are as follows:
S401: server, major function include:
A) in electronic map retail shop location information；
B) the broadcast scan parameter of bluetooth equipment is configured；
C) UUID of bluetooth equipment and the mapping relations of true retail shop name are configured；
S402: bluetooth equipment sends the broadcast data of different time intervals according to different situations when for positioning indoors
Packet；
S403: mobile terminal can be the mobile terminal devices such as smart phone, PAD, for positioning the work of destination address
Tool.
So positioning only needs bluetooth equipment and has the movement of Bluetooth function after the completion of server configures bluetooth equipment
Terminal can be realized.
Finally it should be noted that, above-described embodiment only illustrates technical solution of the present invention and is not limited to this, although on
It states embodiment process of the invention, technology is described in detail, but those skilled in the art are it should be understood that can be in form
Various changes are made to it in upper and details, the range limited without departing from claims of the present invention.
Claims (5)
1. a kind of indoor orientation method based on low-power consumption bluetooth, which is characterized in that main to realize that step includes:
Step 1: bluetooth equipment sends broadcast data packet by time interval of T3, and mobile terminal is in bluetooth equipment region, timing T1
Time interval sends broadcast data packet；
Step 2: bluetooth equipment receive mobile terminal transmission broadcast data packet after, reduce itself send broadcast data packet when
Between interval to T4；
Step 3: the broadcast data packet of bluetooth equipment near mobile scanning terminal, and the RSSI value in 3 broadcast data packets is chosen,
The coordinate information and floor information for parsing the inside make three side location algorithms to coordinate information, and then obtain the seat of self-position
Scale value；
Step 4: mobile terminal is far from original region, then the bluetooth equipment in original region is scanned in timer T to movement
RSSI value in Bluetooth broadcast data packet transmitted by terminal is less than given threshold N, then before being restored to using T3 between the time
Every transmission broadcast data packet.
2. indoor orientation method according to claim 1, which is characterized in that the step 1: bluetooth equipment is using T3 as the time
Interval sends broadcast data packet, and mobile terminal sends broadcast data packet in bluetooth equipment region, by time interval of T1,
Specifically, broadcast data packet transmitted by bluetooth equipment, content include:
A) the corresponding unique identifier UUID of bluetooth equipment (Universally Unique Identifier), UUID with
Destination locations name corresponds；
B) position coordinate, including place floor and the two-dimensional coordinate value of position；
C) broadcast time interval T3 under ideal case；
D) the broadcast time interval T4 under working condition；
Specifically, the random address of itself is arranged before sending broadcast packet in the bluetooth on mobile terminal, then setting broadcast is joined
Self address type in several is casual cnalogy, retransmits broadcast data packet later, content includes: to have arranged with bluetooth equipment
One bluetooth (random) address.
3. indoor orientation method according to claim 1, which is characterized in that the step 2: bluetooth equipment receives movement
Terminal send broadcast data packet report after, parse content, and compare Bluetooth address whether with the Bluetooth address one in data packet
It causes；The time interval of broadcast data packet itself is sent to T2 if it is, reducing；Otherwise, ignore this packet.
4. indoor orientation method according to claim 1, which is characterized in that the step 3: mobile scanning terminal is blue nearby
The broadcast data packet of tooth equipment, and 3 strongest bluetooth equipments of RSSI are chosen, parse the coordinate information and floor letter of the inside
Breath makees three side location algorithms and triadic mean value method to coordinate information, calculates the coordinate value of self-position.
5. the method according to claim 1, wherein the step 4: mobile terminal far from original region,
The RSSI value that then bluetooth equipment in original region is scanned in timer T in the bluetooth data packets broadcasted to mobile terminal is less than
Given threshold sends broadcast data packet by time interval of T3 before being then restored to.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110891298A (en) * | 2019-12-18 | 2020-03-17 | 惠州拓邦电气技术有限公司 | Bluetooth connection method, device, Bluetooth equipment and system |
| CN112351385A (en) * | 2020-10-26 | 2021-02-09 | 维沃移动通信有限公司 | Positioning method and device and electronic equipment |
| CN112433201A (en) * | 2020-11-27 | 2021-03-02 | 歌尔科技有限公司 | Distance measurement method and device and terminal equipment |
| CN112957712A (en) * | 2021-02-05 | 2021-06-15 | 北京深蓝长盛科技有限公司 | Statistical method, device and equipment for main attacker ball-catching data in volleyball sports |
| CN113299039A (en) * | 2020-02-21 | 2021-08-24 | Oppo广东移动通信有限公司 | Alarm method, alarm device, storage medium and electronic equipment |
| WO2022007149A1 (en) * | 2020-07-08 | 2022-01-13 | 黄杰 | Method and system for smart bluetooth operation switching based on beacon broadcast |
| CN114945165A (en) * | 2022-05-19 | 2022-08-26 | 上海慧寻网络科技有限公司 | High-low precision fusion positioning Bluetooth beacon data sending and label scanning method |
| WO2022241581A1 (en) * | 2021-05-21 | 2022-11-24 | 刘镇崇 | Advertisement matching system and method therefor |
| CN114945165B (en) * | 2022-05-19 | 2024-05-14 | 上海慧寻网络科技有限公司 | Bluetooth beacon data transmitting and tag scanning method for high-low precision fusion positioning |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854491A (en) * | 2012-08-24 | 2013-01-02 | 东莞中山大学研究院 | Method and system for carrying out positioning on the basis of Bluetooth technology |
| CN104053128A (en) * | 2014-06-27 | 2014-09-17 | 重庆智石网络科技有限公司 | Information pushing and collecting system and method based on Bluetooth |
| CN104812094A (en) * | 2015-04-21 | 2015-07-29 | 广东欧珀移动通信有限公司 | Method and apparatus for establishing connection between devices |
| CN104955137A (en) * | 2015-05-21 | 2015-09-30 | 北京深思数盾科技有限公司 | Wireless device and broadcasting method thereof |
| CN205681631U (en) * | 2016-05-16 | 2016-11-09 | 北京蜂鸟视图科技有限公司 | Positioning terminal |
| CN108616854A (en) * | 2017-03-28 | 2018-10-02 | 集速智能标签（上海）有限公司 | A kind of method and system of indoor positioning |
| CN109120842A (en) * | 2017-06-23 | 2019-01-01 | 卡西欧计算机株式会社 | Wireless communication device, communication system, wireless communications method and recording medium |
| CN109640304A (en) * | 2018-12-13 | 2019-04-16 | 上海移为通信技术股份有限公司 | The method for improving low-power consumption bluetooth connective stability |
-
2019
- 2019-07-18 CN CN201910649277.XA patent/CN110401913A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854491A (en) * | 2012-08-24 | 2013-01-02 | 东莞中山大学研究院 | Method and system for carrying out positioning on the basis of Bluetooth technology |
| CN104053128A (en) * | 2014-06-27 | 2014-09-17 | 重庆智石网络科技有限公司 | Information pushing and collecting system and method based on Bluetooth |
| CN104812094A (en) * | 2015-04-21 | 2015-07-29 | 广东欧珀移动通信有限公司 | Method and apparatus for establishing connection between devices |
| CN104955137A (en) * | 2015-05-21 | 2015-09-30 | 北京深思数盾科技有限公司 | Wireless device and broadcasting method thereof |
| CN205681631U (en) * | 2016-05-16 | 2016-11-09 | 北京蜂鸟视图科技有限公司 | Positioning terminal |
| CN108616854A (en) * | 2017-03-28 | 2018-10-02 | 集速智能标签（上海）有限公司 | A kind of method and system of indoor positioning |
| CN109120842A (en) * | 2017-06-23 | 2019-01-01 | 卡西欧计算机株式会社 | Wireless communication device, communication system, wireless communications method and recording medium |
| CN109640304A (en) * | 2018-12-13 | 2019-04-16 | 上海移为通信技术股份有限公司 | The method for improving low-power consumption bluetooth connective stability |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110891298A (en) * | 2019-12-18 | 2020-03-17 | 惠州拓邦电气技术有限公司 | Bluetooth connection method, device, Bluetooth equipment and system |
| CN113299039A (en) * | 2020-02-21 | 2021-08-24 | Oppo广东移动通信有限公司 | Alarm method, alarm device, storage medium and electronic equipment |
| WO2022007149A1 (en) * | 2020-07-08 | 2022-01-13 | 黄杰 | Method and system for smart bluetooth operation switching based on beacon broadcast |
| US11877331B2 (en) | 2020-07-08 | 2024-01-16 | Shenzhen Shengrun Technology Co., Ltd | Method and system for smart bluetooth operation switching based on beacon broadcast |
| CN112351385A (en) * | 2020-10-26 | 2021-02-09 | 维沃移动通信有限公司 | Positioning method and device and electronic equipment |
| CN112433201A (en) * | 2020-11-27 | 2021-03-02 | 歌尔科技有限公司 | Distance measurement method and device and terminal equipment |
| CN112957712A (en) * | 2021-02-05 | 2021-06-15 | 北京深蓝长盛科技有限公司 | Statistical method, device and equipment for main attacker ball-catching data in volleyball sports |
| CN112957712B (en) * | 2021-02-05 | 2021-11-30 | 北京深蓝长盛科技有限公司 | Statistical method, device and equipment for main attacker ball-catching data in volleyball sports |
| WO2022241581A1 (en) * | 2021-05-21 | 2022-11-24 | 刘镇崇 | Advertisement matching system and method therefor |
| CN114945165A (en) * | 2022-05-19 | 2022-08-26 | 上海慧寻网络科技有限公司 | High-low precision fusion positioning Bluetooth beacon data sending and label scanning method |
| CN114945165B (en) * | 2022-05-19 | 2024-05-14 | 上海慧寻网络科技有限公司 | Bluetooth beacon data transmitting and tag scanning method for high-low precision fusion positioning |
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