CN109633532A - A kind of wireless beacon positioning system and its localization method - Google Patents
A kind of wireless beacon positioning system and its localization method Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
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Abstract
The present invention provides a kind of wireless beacon positioning system and its localization method, belong to internet of things field, it includes wireless beacon, tag card and positioning substation, wherein, grouping is matched by the way of distribution according to need between wireless beacon and positioning substation, and it can data communication only between the wireless beacon in the same grouping and positioning substation, wireless beacon carries out time synchronization using dynamic on-demand time service principle, solve wireless beacon using battery power on-demand suspend mode in the case where be still able to achieve on demand grouping this problem of dynamic time service, it is configured on demand by transmitting field strength and attenuation coefficient, the technologies such as signal strength threshold filtering, it meets in petrochemical industry, the flexible requirements that the operation fields such as chemical industry dispose positioning accuracy on demand, low cost is realized again, high-precision locating effect.
Description
Technical field
The present invention relates to internet of things field more particularly to a kind of wireless beacon positioning system and its localization methods.
Background technique
Using the positioning system of the multiple technologies such as RFID, ZigBee, Wi-Fi, UWB, bluetooth, basic framework is fixed part
Affix one's name to card reading substation, personnel carry tag card, and card reading substation receives the information of tag card carried from personnel, according to its field strength,
The information such as phase, tag card sequence code are identified and positioned.
The clock that above location algorithm requires nodes keeps synchronizing.However different nodes has oneself
Local clock, since there are deviations for the crystal oscillation frequencies of different nodes, the frequency of multiple crystal oscillators is difficult to be consistent, traditional
Time synchronization protocol tries hard to make the crystal oscillation frequency in whole network to reach the synchronism of time, however due to wireless sensor
The limitation of network node architecture, the Time synchronization algorithm in prior art are often extremely difficult to preferably require, such as:
Based on sender ~ recipient Time synchronization algorithm, principle is that sender is embedded in its local zone time in sync message,
Recipient adjusts the local zone time of its own according to the time after receiving the message.
Based on sender ~ recipient's interaction time synchronized algorithm, principle is bi-directionally sent sync message, according to the synchronization
Message can calculate the propagation delay time of time deviation between two adjacent nodes, message.
Based on recipient ~ recipient's interaction time synchronized algorithm, principle is synchronized between multiple recipients using message
Time, reference mode is every to be issued one and refers to message, other recipient's nodes in broadcast domain will all receive the message,
And record the local moment for receiving this with reference to message when.Recipients exchange at the time of they record and calculating difference, should
Difference is exactly the clock skew between recipients.
The above position fixing process, be all between tag card and card reading substation there is no premised on blocking, and in petrochemical industry, change
Under the complicated environmental conditions such as work scene, often there is various barriers, such as steel construction and concrete operation field, it is pure
The pure method based on radio frequency cannot all provide required positioning and tracking ability.
For personnel positioning, patentee cares for a kind of " personnel location system (notification number of big invention
CN103634908A) ", which includes personnel positioning communication base station, personnel positioning portable terminal, localizer beacon and personnel positioning
Server, localizer beacon are installed on fixed position as needed, and localizer beacon has unique with its installation site information association
Number, and periodically its number information wirelessly is sent to personnel positioning portable terminal；Personnel positioning portable terminal is by people
Member carries, and the number information that each localizer beacon of personnel's positions portable terminal real-time reception is sent, processing obtains current location
Information shows to carrying personnel and is sent to personnel positioning server.
Patent CN102523621A also discloses a kind of personnel location system, it by ground monitoring center, transmission base station,
Optical fiber, gateway node, bus, beaconing nodes, training node and mobile node composition.Beaconing nodes press block cloth in tunnel
If personnel carry mobile node, mobile node reads the signal of beaconing nodes and the location information to the beaconing nodes received
It is handled, and is uploaded to ground monitoring center and its station-keeping mode data progress matching primitives, realize positioning；Training node is used
In measurement, acquisition, amendment station-keeping mode data.
However, the above several method is required to periodically wirelessly send out to mobile node or personnel positioning portable terminal
Send location information.Therefore, there are the following problems: due to the difference of node crystal oscillator characteristic, even if the clock between each node
Frequency and counting period are set as same value, cannot guarantee that the period of each node is equal.And due to various factors such as operation fields
Influence, node cannot directly and the synchronization of time reference node and can only with there are the nodes of synchronous error with time reference node
It synchronizes, therefore the accumulation of synchronous error will occur, the reliability of system also reduces rapidly.
Personnel positioning method in prior art, since channel degradation causes it, there are the above problems, these channels are even
It will affect the point-to-point communication between positioning device, even if equally existing multipath fading without any outside radio frequency interference source,
And signal when various objects by can substantially decay in environment and radiofrequency signal can not penetrate metal etc. at all.
Personnel location system in prior art is worked in a manner of " phase internet ", that is to say, that is in prior art
Estimate the position of one or more equipment, to need to be in communication with each other between several equipment.Therefore, the performance that tradition positions is largely
On influenced by the position of these equipment relative to each other.
All there is merits and demerits in the widely used technology and methods such as bluetooth, ZigBee, UWB and RFID.It is pure
Positioning accuracy needed for the pure method based on radio frequency may be unable to reach specific application scene, or specific application can not be met
The requirement of all operability of program.
In addition, indoor beacon location technology is divided into according to the difference of location mechanism based on ranging and non-ranging at present
Method.It is positioned based on non-ranging method using information realizations such as network connectivties, positioning accuracy is relatively low, based on ranging
For method by information such as distance or angles between measuring node come the position of calculate node, positioning accuracy is relatively high.
Location technology based on received signal strength (RSSI) belongs to the method based on ranging, is calculated by RSSI method
The distance that two o'clock is asked is positioned by the mutual alignment between node, due to the complexity of work site environments, this method
Precision is seriously influenced by factors such as big interference, multipath reflection, non-line-of-sight problems, therefore the positioning accuracy of this method is also inadequate
It is ideal.It is positioned using RSSI algorithm, when transmission range is closer, power attenuation is very fast, and transmission range is remoter, and signal declines
Subtract slower.So being positioned with RSSI, distance is closer, and it is more accurate to position；Distance is remoter, and position error is bigger.
Radio signal has fraction of signal strength loss in communication process, and the size being lost according to these can push away
The distance between radio signal launch point and receiving point are exported, the purpose of positioning may be implemented according to multiple range data.But
It is the various uncertain factors such as complexity due to practical application environment, such as barrier obstruction, diffraction, air themperature and humidity
Influence, to the Accurate Model of radio signal loss model, it is almost impossible, this results in estimating by RSSI value and move
Dynamic node has large error at a distance from reference mode.
For personnel positioning, patentee Zeng Hong, Dai Guojun, Zhu Jincheng etc. have invented a kind of " a kind of based on the close of RSSI
Apart from accurate positioning method (notification number CN201410256215) ", which carries out parameter calibration first, obtain RSSI to away from
From mapped system, achieve the purpose that precision ranging.Next the follow-up work that ranging will be completed utilizes unknown node and more
The range data of a difference beaconing nodes carries out the accurate positioning of unknown node.
Patent CN201410204298 also discloses a kind of RSSI localization method based on frequency hopping, calibration phase, solid
The multiple channel RSSI values of one-point measurement, record and calculate the ranging parameters in RSSI ranging model；System prepares, deployment positioning
Anchor node realizes that destination node is synchronous with anchor node；Communication acquisition is carried out using multiple channels respectively on the target node
RSSI value；RSSI is processed into signal strength amplitude optimization processing by signal processing stage；Positioning stage, in positioning service
On device according to each signal strength meter calculate distance and destination node location.
The general character of the above several method is:
It is finally positioned by multiple spot RSSI.The practical signal in any one of the operation fields such as petrochemical industry, chemical industry beacon
It is bad, it can all lead to error of principle such as " can not Chuan Yuezhuanzhi She Bei wall, inside and outside regardless of ".
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of wireless beacon positioning system and its localization method, it is intended to solve wireless
Beacon using battery power on-demand suspend mode in the case where be still able to achieve on demand grouping this problem of dynamic time service, pass through launching site
The technologies such as strong and attenuation coefficient configures on demand, signal strength threshold filters, meet in operation fields such as petrochemical industry, chemical industry to positioning
The flexible requirements that precision is disposed on demand, and realize the locating effect of low-cost and high-precision.Technical solution provided by the invention is such as
Under:
It includes wireless beacon, tag card and positioning substation that the present invention, which provides a kind of wireless beacon positioning system, wherein described wireless
Beacon is positioning substation, anchor point, one of location tags, the wireless beacon, the tag card and the positioning substation it
Between the mode based on wireless transmission carry out signal transmission, the wireless beacon and the tag card using battery power, the nothing
Between line beacon and the positioning substation using distribution according to need by the way of match grouping, and only in the same grouping described in
Between wireless beacon and the positioning substation can data communication, the wireless beacon using dynamic on-demand time service principle carry out
Time synchronization.
Optionally, the wireless beacon is on the basis of the periodic beacon signal of the positioning substation, and according to virtual time
The time that algorithm calculates successively dormancy awakening is stabbed, to reach the time synchronization between each wireless beacon.
Optionally, the transmitting field strength of the positioning substation and attenuation coefficient configure on demand.
Optionally, the positioning substation controls between the positioning substation and the wireless beacon according to its deployment scenario
Transmission power, and corresponding attenuation coefficient is configured according to its deployment scenario.
Optionally, the wireless beacon is according to application scenarios and positioning accuracy request, on-demand setting signal intensity threshold pair
The signal received is filtered, and finally only retains satisfactory signal.
On the other hand, described invention additionally discloses a kind of localization method applied to above-mentioned wireless beacon positioning system
Localization method includes:
Wireless beacon and positioning substation are grouped on demand according to field condition, wherein described in only in same grouping
Wireless beacon and the positioning substation could communicate, and according to deployment scenario control the positioning substation and the wireless beacon it
Between transmission power, and corresponding attenuation coefficient is configured according to deployment scenario；
On the basis of the periodic beacon signal for positioning substation, and according to virtual time stab algorithm calculate successively dormancy awakening when
Between, to reach the time synchronization between each wireless beacon；
Need to be arranged the mark range of the wireless beacon according to positioning scene, wherein the mark range is 1.5 meters ~ 5 meters；
The wireless beacon gives the tag card mark into its mark range, and the tag card after being marked passes through wireless signal handle
Data are sent to the positioning substation for covering the tag card；
The positioning substation, which receives data and then transfers data to Back end data server, passes through platform software to realize
Calculate the exact position for carrying the operating personnel of the tag card.
The present invention at least has the following beneficial effects:
The present invention provides a kind of wireless beacon positioning system and its localization methods, wherein between wireless beacon and positioning substation
Grouping is matched by the way of distribution according to need, and can only between the wireless beacon in the same grouping and positioning substation
Data communication, wireless beacon are carried out time synchronization using dynamic on-demand time service principle, solve wireless beacon and supplied using battery
Grouping this problem of dynamic time service on demand is still able to achieve in the case where electric suspend mode on demand, it is on-demand by transmitting field strength and attenuation coefficient
The technologies such as configuration, signal strength threshold filtering, meet the spirit disposed on demand in operation fields such as petrochemical industry, chemical industry to positioning accuracy
It is living to require, and realize low cost, high-precision locating effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of wireless beacon positioning system provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Below with reference to shown in Fig. 1, a kind of wireless beacon positioning system and its localization method to the embodiment of the present invention into
Row is described in detail.
Refering to what is shown in Fig. 1, a kind of wireless beacon positioning system of the embodiment of the present invention includes wireless beacon 2,3 and of tag card
Position substation 1, wherein wireless beacon 2 is one of positioning substation, anchor point, location tags or a variety of combinations, wireless beacon
2, the mode based on wireless transmission carries out signal transmission between tag card 3 and positioning substation 1, exemplary, wireless beacon 2, mark
Signal transmission namely wireless communication are carried out based on the agreements such as bluetooth, ZigBee, UWB, RFID, WIFI between card 3 and positioning substation 1
Connection type between mark 2, tag card 3 and positioning substation 1 is to be wirelessly connected.
Refering to what is shown in Fig. 1, wireless beacon 2 and tag card 3 are all made of battery power supply namely wireless beacon 2 and tag card 3
Inside is equipped with battery, can be rechargeable battery or button cell.Using on-demand point between wireless beacon 2 and positioning substation 1
The mode matched matches grouping, and only between the wireless beacon 2 in the same grouping and positioning substation 1 can data it is logical
Letter, not between the wireless beacon 2 in the same grouping and positioning substation 1 can not data communication, and wireless beacon 2 and fixed
Using real-time on-demand group forming criterion between the substation 1 of position.Namely wireless beacon 2 and positioning substation 1 can be according to field condition
Distribution according to need in real time is carried out, certain several wireless beacon and certain several positioning substation can be distributed in the same specific cluster,
And data communication can be carried out between the wireless beacon 2 in the grouping and positioning substation 1.
Specifically, refering to what is shown in Fig. 1, the embodiment of the present invention wireless beacon 2 and positioning substation 1 between signal transmission side
Formula is wireless transmission, can be grouped on demand between wireless beacon 2 and positioning substation 1, i.e., some/several wireless beacons 2 can with some/
Several positioning substations 1 are divided in one specific group, only and oneself wireless beacon 2 in the same grouping and position substation 1
Communication.
When being communicated between arranging positioning substation 1, wireless beacon 2 and tag card 3, by controlling wireless beacon
The mode of 2 launch channels is needing the quantity control that the positioning substation, wireless beacon of communication can be able to achieve with the same tag card
In the range of wanting.
Specifically, tag card 3 is divided into several and sends position on the different channels according to the difference of each wireless beacon 2
The group of ID is set, and is listened on the different channels that every small component is matched one by one, the tag card 3 in each group is read one by one
It writes, so that tag card group will have registered and tag card group of not registering distinguishes, avoids and identified in group of not registering
The interference of card avoids useless information, reduces collision.
The wireless beacon 2 of the embodiment of the present invention carries out time synchronization using dynamic on-demand time service principle.Specifically, of the invention
On the basis of the periodic beacon signal of positioning substation 1 of the wireless beacon 2 of embodiment where it in grouping, and according to virtual time
The time that algorithm calculates successively dormancy awakening is stabbed, to reach the time synchronization between each wireless beacon 2.In prior art, pass
The purpose of the time synchronization protocol of system is the consistency in order to realize node time, that is, reaches simultaneity, and the embodiment of the present invention
Simultaneous techniques be then to realize the synchronism between wireless beacon and tag card, i.e., tag card and wireless beacon is certain dynamic
Make period having the same and phase.Simultaneously in order to reduce wireless beacon power consumption, each wireless beacon can on-demand suspend mode, position substation
The beacon signal of a cycle is sent, wireless beacon carries out time synchronization adjustment according to the beacon signal, to reach node
Between synchronism.Data communication is the direct communication between wireless beacon and positioning substation, as long as therefore nothing in same grouping
Synchronism can be reached between line beacon and be to ensure that the reliable and stable of data communication.
Refering to what is shown in Fig. 1, the transmitting field strength and attenuation coefficient of each positioning substation 1 of the embodiment of the present invention can be by
It needs to configure, namely different according to the deployment scenario of positioning substation 1, control on demand positions the transmitting function of substation 1 and wireless beacon 2
Rate, and according to the difference of deployment scenario, corresponding attenuation coefficient is configured on demand.Specifically, positioning substation 1 is according to its deployment scenario
Transmission power between control positioning substation and wireless beacon, and corresponding attenuation coefficient is configured according to its deployment scenario.Example
, can in advance in terminal preset attenuation coefficient, transmission power and scene mapping table, and then in the mistake configured on demand
Cheng Zhong, according to the transmission power and attenuation coefficient of mapping table configuration positioning substation 1 preset in advance.
Specifically, transmission power is provided that wireless beacon 2 persistently receives information on demand, personnel carry the every 1s of tag card 3
It wakes up and sends out 1 broadcast singal, after wireless beacon receives broadcast singal, according to the attenuation coefficient and fixed threshold of setting, reply nothing
Line beacon ID number and channel number, switching channel and transmission power are sent to positioning substation 1 after tag card 3 is parsed, and realize
Accurate positioning function.
Wherein, different according to deployment scenario, the transmission power of control on demand wireless beacon 2, and according to the difference of scene, match
Set corresponding attenuation coefficient.It is exemplary, mapping table such as one institute of following table table between transmission power and attenuation coefficient and deployment scenario
Show:
Table one: the mapping table between attenuation coefficient and deployment scenario
| Barrier | Pad value | Attenuation coefficient |
| Common brick cement wall (15-25cm) | 3~18dBm | F0 |
| Reinforced concrete wall | 15~20dBm | EC |
| Building-block brick wall | 4~6dBm | A8 |
| Wood siding wall (5-10cm) | 5~6dBm | A9 |
| Simple plaster board wall | 3~5dBm | A7 |
| Windowpane (3-5cm) | 6~8dBm | B0 |
| Timber | 3~5dBm | A7 |
| Metallic door | 6~8dBm | B0 |
| Device steel construction | 20~28 dBm | F0 |
| Install pipes frame | 15~22dBm | FF |
Further, wireless beacon 2 is according to application scenarios and positioning accuracy request, and on-demand setting signal intensity threshold is to receiving
Signal be filtered, finally only retain satisfactory signal.
Signal strength threshold filtering: according to scene difference, positioning accuracy request is different, can on-demand setting signal intensity threshold
It is filtered, leaves behind satisfactory signal.
The attenuation coefficient and transmission power of each wireless beacon can arbitrarily be set according to field condition, by different
Transmission power and signal strength threshold, the mapped system of acquisition wireless beacon RSSI to distance.
The purpose of traditional time synchronization protocol is the consistency in order to realize node time, that is, reaches simultaneity, in order to
Realize that tag card 3, wireless beacon 2, the synchronism for positioning 1 centre of substation, traditional method need real-time clock synchronous, power consumption
Height cannot achieve battery power supply.However, the present invention, on the basis of the periodic beacon signal for positioning substation, wireless beacon is according to void
Pseudotime stabs algorithm and calculates the time that successively suspend mode is waken up, and reaches the time synchronization between each wireless beacon.Namely it is of the invention
Simultaneous techniques is then to realize the synchronism between wireless beacon and tag card, i.e. certain movements of tag card and wireless beacon
Period having the same and phase.In order to reduce wireless beacon power consumption, each wireless beacon can on-demand suspend mode, positioning substation sends one
A periodic beacon signal, beacon according to the beacon signal carry out time synchronization adjustment, as long as thus similar wireless beacon it
Between can reach synchronism and be to ensure that the reliable and stable of data communication, and then realize in battery-powered situation also can when
Clock is synchronous, obtains more quasi- location information.
The embodiment of the present invention solves actual job scene by using transmission power+attenuation coefficient+threshold filtering technology
RSSI value estimation mobile node has a large error problem at a distance from reference mode, perfect mapped system of the RSSI to distance.
The embodiment of the present invention also provides a kind of localization method applied to above-mentioned wireless beacon positioning system, specifically includes:
Wireless beacon and positioning substation are grouped on demand according to field condition, wherein only wireless in same grouping
Beacon and positioning substation could communicate, and control the transmission power between positioning substation and wireless beacon according to deployment scenario, and
Corresponding attenuation coefficient is configured according to deployment scenario；
On the basis of the periodic beacon signal for positioning substation, and according to virtual time stab algorithm calculate successively dormancy awakening when
Between, to reach the time synchronization between each wireless beacon；
Need to be arranged the mark range of wireless beacon according to positioning scene, wherein the mark range of setting is 1.5 meters ~ 5 meters；
Wireless beacon gives the tag card mark into its mark range, and the tag card after being marked is by wireless signal data
It is sent to the positioning substation for covering the tag card；
Positioning substation, which receives data and then transfers data to Back end data server, to be calculated with realizing by platform software
The exact position of the operating personnel of tag card is carried out.
Refering to what is shown in Fig. 1, exemplary, the wireless beacon positioning system of the embodiment of the present invention includes 4 wireless beacons 2, is compiled
It number is respectively D1 ~ D4, certainly, wireless beacon, which is also possible to one, can also be more, and it is not limited in the embodiment of the present invention.
Wherein, positioning substation 1 is 2, and number is J1 and J2 respectively, and tag card 3 is 2, and number is respectively K1 and K2.Label 5 in Fig. 1
The mark range of each wireless beacon is represented, label 6 represents marking data stream, and label 7 represents position data stream.
Refering to what is shown in Fig. 1, using above-mentioned localization method for each tag card 3 in the mistake close to or away from wireless beacon 2
Cheng Zhong can realize fast positioning.It is exemplary, when the tag card 3 that the number in the present embodiment is K1 and number is K2 individually connects
It when close or remote from wireless beacon 2, is positioned by above-mentioned working method, and the mark that tag card identiflication number is K1 or number is K2
Know card, location information is sent to positioning substation 1；If number be the tag card 3 of K2, K1 close to or away from wireless beacon 2 when,
It is positioned simultaneously by above-mentioned localization method, the two identity and location information is sent respectively to positioning substation 1, are realized not
It is positioned while with tag card 3.
The present invention provides a kind of wireless beacon positioning system and its localization methods, wherein wireless beacon and positioning substation
Between match grouping by the way of distribution according to need, and the ability only between the wireless beacon in the same grouping and positioning substation
Can data communication, wireless beacon using dynamic on-demand time service principle carry out time synchronization, solve wireless beacon using electricity
It is still able to achieve grouping this problem of dynamic time service on demand in the case where the on-demand suspend mode of pond power supply, passes through transmitting field strength and attenuation coefficient
The technologies such as configuration, signal strength threshold filtering on demand, meet and dispose on demand in operation fields such as petrochemical industry, chemical industry to positioning accuracy
Flexible requirements, and realize low cost, high-precision locating effect.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of wireless beacon positioning system, which is characterized in that the wireless beacon positioning system includes wireless beacon, tag card
With positioning substation, wherein the wireless beacon is one of positioning substation, anchor point, location tags, the wireless beacon, institute
It states the mode based on wireless transmission between tag card and the positioning substation and carries out signal transmission, the wireless beacon and the mark
Know card to power using battery, matches grouping by the way of distribution according to need between the wireless beacon and the positioning substation, and
Only between the wireless beacon and the positioning substation in the same grouping can data communication, the wireless beacon
Time synchronization is carried out using dynamic on-demand time service principle.
2. wireless beacon positioning system according to claim 1, which is characterized in that the wireless beacon is with the positioning point
On the basis of the periodic beacon signal stood, and the time that algorithm calculates successively dormancy awakening is stabbed according to virtual time, to reach each
Time synchronization between the wireless beacon.
3. wireless beacon positioning system according to claim 1 or 2, which is characterized in that the launching site of the positioning substation
Strong and attenuation coefficient configures on demand.
4. wireless beacon positioning system according to claim 4, which is characterized in that the positioning substation disposes field according to it
Scape controls the transmission power between the positioning substation and the wireless beacon, and configures corresponding decaying according to its deployment scenario
Coefficient.
5. wireless beacon positioning system according to claim 4, which is characterized in that the wireless beacon is according to application scenarios
And positioning accuracy request, on-demand setting signal intensity threshold are filtered the signal received, final only reservation meets the requirements
Signal.
6. one kind is applied to the localization method such as the described in any item wireless beacon positioning systems of claim 1 ~ 5, feature exists
In the localization method includes:
Wireless beacon and positioning substation are grouped on demand according to field condition, wherein described in only in same grouping
Wireless beacon and the positioning substation could communicate, and according to deployment scenario control the positioning substation and the wireless beacon it
Between transmission power, and corresponding attenuation coefficient is configured according to deployment scenario；
On the basis of the periodic beacon signal for positioning substation, and according to virtual time stab algorithm calculate successively dormancy awakening when
Between, to reach the time synchronization between each wireless beacon；
Need to be arranged the mark range of the wireless beacon according to positioning scene, wherein the mark range is 1.5 meters ~ 5 meters；
The wireless beacon gives the tag card mark into its mark range, and the tag card after being marked passes through wireless signal handle
Data are sent to the positioning substation for covering the tag card；
The positioning substation, which receives data and then transfers data to Back end data server, passes through platform software to realize
Calculate the exact position for carrying the operating personnel of the tag card.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574324.0A CN109633532A (en) | 2018-12-21 | 2018-12-21 | A kind of wireless beacon positioning system and its localization method |
| PCT/CN2018/123937 WO2020124646A1 (en) | 2018-12-21 | 2018-12-26 | Wireless beacon-based positioning system and positioning method thereof |
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| CN113567910A (en) * | 2021-07-22 | 2021-10-29 | 青岛安然物联网科技有限公司 | Wireless beacon positioning system and positioning method thereof |
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| CN113671272A (en) * | 2021-08-20 | 2021-11-19 | 中煤科工集团重庆研究院有限公司 | Automatic calibration method for UWB base station antenna time delay |
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