CN106303949B - Zigbee localization method and its location reference point choosing method - Google Patents
Zigbee localization method and its location reference point choosing method Download PDFInfo
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- CN106303949B CN106303949B CN201510363585.8A CN201510363585A CN106303949B CN 106303949 B CN106303949 B CN 106303949B CN 201510363585 A CN201510363585 A CN 201510363585A CN 106303949 B CN106303949 B CN 106303949B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention discloses a kind of Zigbee localization method and its location reference point choosing methods.The location reference point choosing method a, comprising the following steps: data set is established, for saving the information of the location reference point received, wherein the information of each location reference point uniquely exists and including a Lifetime values；The update an of data set and the typing of location reference point are carried out every a prefixed time interval；Step 3: extracting the location reference point having in the data set when being positioned.Zigbee localization method and its location reference point choosing method of the invention can exclude the image of the disturbing factors such as the unstability of wireless transmission, by choosing location reference point appropriate, so that positioning result is more acurrate.
Description
Technical field
The present invention relates to the location reference point selection sides in a kind of Zigbee localization method more particularly to Zigbee positioning
Method.
Background technique
ZigBee wireless communication technique is the two-way wireless communication network technology of a kind of low rate, low-power consumption, low cost, can
It is widely used in the fields such as various industries monitoring, security system, sensor transmissions network, Intelligent housing.It works
In tri- frequency ranges of 868MHz, 915MHz and 2.4GHz, share 27 channels, communication distance from 75 meters of standard to several hundred rice, very
Supreme km.Wherein, the message transmission rate of 250kbps can be occasionally provided when working in 2.4GH frequency range, be suitable for high-throughput,
The occasion of low delay or low duty cycle；The data transmission of 20kbps, 40kbps can be provided when working in 868/915MHz frequency range
Rate, suitable for low rate, the occasion of high sensitivity and big area coverage.
Measured seven layers of open system interconnection (OSI) model of Zigbee protocol stack, but only those are related to
The layer of ZigBee, which is given, to be defined.IEEE802.15.4-203 standard defines physical layer (PHY) and M AC sublayer
(MAC)；ZigBee alliance provides the design of network layer (NWK) and application layer (APL) frame.Wherein the frame of application layer includes
Application support sublayer (APS), Zigbee device object (ZDO) and the application formulated by manufacturer.Zigbee protocol stack
Each layer provides one group for its upper layer and specifically services: a data entity provides data transport service, and a management entity mentions
It is all serviced for other.Each service entities provide service structure by a Service Access Point (SAP) for its upper layer, and every
SAP provides a series of elementary instruction to complete corresponding function.
It is made of based on the positioning network of Zigbee protocol stack three kinds of device nodes: central node, reference mode and terminal
Label.Central node is the promoter and organizer of network；Reference mode is responsible for the routing of information frame in network and provides positioning
The reference coordinate of point；Terminal labels are then the mobile individuals for needing to position.Node is referenced after the signal broadcast of label to receive simultaneously
Range information is converted to according to signal strength.The id information of the subsequent additional reference node of the range information is all fed back to label.Week
In time phase, the range information for each reference mode that label comparison receives will be apart from nearest reference node after being ranked up
Point information is dealt into central node.Central node summarizes the information of all labels and is transmitted on background web server, according to reference
The coordinate of node and out position is marked in the 2D location drawing to the distance of label.
When application above scheme carries out indoor or outdoors positioning, the range information of cycle time internal reference node feeding back by
In the unstability of wireless transmission, it is possible to which the ranking results that will cause positioning label change repeatedly in adjacent periods, intuitively
Ground shows as the location information displaing coordinate on the figure of plan-position and jumps repeatedly, this seriously affects positioning accuracy and use
The using effect at family.
Summary of the invention
The technical problem to be solved by the present invention is to exist in the prior art for existing Zigbee location technology to overcome
It may cause the defect of positioning result inaccuracy due to the influence of the factors such as the unstability of wireless transmission when positioning, provide
Zigbee localization method and its location reference point choosing method.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of location reference point choosing method of Zigbee positioning, it is characterized in that, comprising the following steps:
Step 1: a data set is established in positioning terminal, and for saving the information of the location reference point received, the data
The information of each location reference point is concentrated uniquely to exist, the information of each location reference point includes all one's life life periodic quantity；
Step 2: the update an of data set and the typing of location reference point are carried out every a prefixed time interval, wherein
Data set is updated to, and subtracts one for the Lifetime values for all location reference points having in the data set, then from the data
The information for rejecting the location reference point that Lifetime values are zero is concentrated, the typing of location reference point is the positioning ginseng that typing receives
The information of examination point simultaneously assigns one default value of location reference point of typing as Lifetime values；
Step 3: extracting the location reference point having in the data set when being positioned.
Preferably, the typing of the location reference point in the step 2, the location reference point and receipts having in the data set
When the location reference point arrived is identical, the Lifetime values of the identical location reference point in the data set are reset to this and are preset
Numerical value.
Preferably, the information of each location reference point saved in the data set is issued by a location reference point.
The present invention also provides the location reference point choosing methods of another Zigbee positioning, it is characterized in that, including with
Lower step:
Step 1: a data set is established in positioning terminal, and for saving the information of the location reference point received, the data
The information of each location reference point is concentrated uniquely to exist, the information of each location reference point includes all one's life life periodic quantity；
Step 2: the update of data set and the typing of location reference point are carried out in the information for receiving location reference point,
Middle data set is updated to, and subtracts one for the Lifetime values for all location reference points having in the data set, then from the number
According to the information for rejecting the location reference point that Lifetime values are zero is concentrated, the typing of location reference point is the positioning that typing receives
The information of reference point simultaneously assigns one default value of location reference point of typing as Lifetime values；
Step 3: extracting the location reference point having in the data set when being positioned.
Preferably, the typing of the location reference point in the step 2, the location reference point and receipts having in the data set
When the location reference point arrived is identical, the Lifetime values of the identical location reference point in the data set are reset to this and are preset
Numerical value.
Preferably, the information of each location reference point saved in the data set is issued by a location reference point.
The present invention also provides a kind of Zigbee localization methods, it is characterized in that, using location reference point as described above
Choosing method chooses location reference point, using the location reference point of selection as reference mode needed for location Calculation.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get each preferable reality of the present invention
Example.
The positive effect of the present invention is that: Zigbee localization method and its location reference point choosing method of the invention
The image that can exclude the disturbing factors such as the unstability of wireless transmission, by choosing location reference point appropriate, so that
Positioning result is more acurrate.
Detailed description of the invention
Fig. 1 is the flow chart of the location reference point choosing method in the Zigbee localization method of the embodiment of the present invention 1.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
Embodiment 1
The Zigbee localization method of the present embodiment chooses location reference point using following location reference point choosing method, will
The location reference point of selection is as reference mode needed for location Calculation.
Wherein, as shown in Figure 1, the location reference point choosing method the following steps are included:
Step 1: a data set is established in positioning terminal, and for saving the information of the location reference point received, the data
The information of each location reference point is concentrated uniquely to exist, the information of each location reference point includes all one's life life periodic quantity, per certain
The information of potential reference point is issued by a location reference point；
Step 2: the update an of data set and the typing of location reference point are carried out every a prefixed time interval, wherein
Data set is updated to, and subtracts one for the Lifetime values for all location reference points having in the data set, then from the data
The information for rejecting the location reference point that Lifetime values are zero is concentrated, the typing of location reference point is the positioning ginseng that typing receives
The information of examination point simultaneously assigns one default value of location reference point of typing as Lifetime values；
Step 3: extracting the location reference point having in the data set when being positioned.
Wherein, the typing of the location reference point in the step 2, the location reference point having in the data set with receive
Location reference point it is identical when, the Lifetime values of the identical location reference point in the data set are reset into the present count
Value.
Hereinafter, being illustrated for an application example to the implementation process of the Zigbee localization method of the present embodiment.
Firstly, process when implementing existing Zigbee localization method approximately as:
1. position label sends broadcast message (mainly including the information of itself) in a cycle period (t).
2. each reference mode receives and converses distance according to wireless signal strength after broadcast message, reference node is added
The information of point itself feeds back to positioning label.
3. label receives feedback data in the certain period of time after sending broadcast, then arranged according to range data
Sequence, and it is sent to central node, central node is forwarded to background server, is uniformly displayed on the screen and is positioned.
Since in each process cycle, the time of each reference mode feedback data to positioning label is not fixed, just make
It is big at the location data fluctuation received in positioning label each period.
In the Zigbee localization method of the present embodiment, " every a prefixed time interval " in the step 2 generally can be with
This process is divided into multiple periods by the periodicity being interpreted as in position fixing process.Following application example is based on 4 positioning
The implementation process of the positioning in four periods of reference point A, B, C, D is illustrated.
1. the feedback data time-out of location reference point B, the feedback data of other location reference points all can in a cycle
Normal processing, therefore other than location reference point B, the range data of other each reference points can all participate in sorting, then according to sequence
As a result the position of positioning label is shown on the location drawing of backstage.It is default that the Lifetime values of location reference point A, C, D, which are endowed,
Value vLife=3's, B is then 0.
2. in second period, first each location reference point data Lifetime values are all subtracted 1 (as vLife-1), it is right
It is 0 then not handle in original value.In this period, location reference point A does not have feedback data, but its Lifetime values
(vLife-1) it is still greater than 0, therefore still participates in sequence process.Location reference point B has normal feedback data, therefore its data is joined
With into sequence, the Lifetime values of B are vLife.Location reference point C, D all Normal Feedbacks, Lifetime values are all reset to
Preset value vLife.
3. in the third period, first all subtracting 1 for each location reference point data Lifetime values.Location reference point A still without
Feedback data, but since its Lifetime values (vLife-2) is greater than 0, therefore still its data is added in sequence process.Positioning
Reference Point C feedback data time-out, verifies its Lifetime values (vLife-1) greater than 0, therefore its data participates in sequence process.Positioning
Reference point B, D Normal Feedback, Lifetime values all reset to preset value vLife.
4. first all subtracting 1 for each location reference point data Lifetime values in the 4th period.If location reference point A has
Normal feedback data then resets its Lifetime values and is vLife and participates in sequence process, if without Normal Feedback, due to
(vLife-3) be not more than 0, be not involved in sequence, until until period in location reference point A again being capable of Normal Feedback.Its
His each location reference point feedback data is all normal, and Lifetime values reset to vLife and are ranked up.
Although will appear feedback data exception from can be seen that each location reference point in position fixing process in above-mentioned process
Situation, but when being positioned after choosing the position of positioning label still can be it is stable, will not be with the shakiness of feedback data
Standing wave is dynamic and generates jump.
Embodiment 2
Compared to embodiment 1, the difference of the Zigbee localization method of the present embodiment is only that, in the step 2, is being received
To location reference point information when carry out data set update and location reference point typing, rather than in a periodic manner every
One prefixed time interval carries out the update an of data set and the typing of location reference point.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, many changes and modifications may be made, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (7)
1. a kind of location reference point choosing method of Zigbee positioning, which comprises the following steps:
Step 1: a data set is established in positioning terminal, for saving the information of the location reference point received, in the data set
The information of each location reference point uniquely exists, and the information of each location reference point includes all one's life life periodic quantity；
Step 2: carry out the update of data set and the typing of location reference point every a prefixed time interval, wherein data
The Lifetime values for all location reference points having in the data set are subtracted one, then from the data set by being updated to for collection
The information for the location reference point that Lifetime values are zero is rejected, the typing of location reference point is the location reference point that typing receives
Information and assign one default value of location reference point of typing as Lifetime values；
Step 3: extracting the location reference point having in the data set when being positioned.
2. location reference point choosing method as described in claim 1, which is characterized in that location reference point in the step 2
Typing, when the location reference point having in the data set is identical as the location reference point received, by the phase in the data set
The Lifetime values of same location reference point reset to the default value.
3. location reference point choosing method as described in claim 1, which is characterized in that each positioning saved in the data set
The information of reference point is issued by a location reference point.
4. a kind of location reference point choosing method of Zigbee positioning, which comprises the following steps:
Step 1: a data set is established in positioning terminal, for saving the information of the location reference point received, in the data set
The information of each location reference point uniquely exists, and the information of each location reference point includes all one's life life periodic quantity；
Step 2: the update of data set and the typing of location reference point are carried out in the information for receiving location reference point, wherein counting
According to being updated to for collection, the Lifetime values for all location reference points having in the data set are subtracted one, then from the data set
The middle information for rejecting the location reference point that Lifetime values are zero, the typing of location reference point are the positioning reference that typing receives
The information of point simultaneously assigns one default value of location reference point of typing as Lifetime values；
Step 3: extracting the location reference point having in the data set when being positioned.
5. location reference point choosing method as claimed in claim 4, which is characterized in that location reference point in the step 2
Typing, when the location reference point having in the data set is identical as the location reference point received, by the phase in the data set
The Lifetime values of same location reference point reset to the default value.
6. location reference point choosing method as claimed in claim 4, which is characterized in that each positioning saved in the data set
The information of reference point is issued by a location reference point.
7. a kind of Zigbee localization method, which is characterized in that using the positioning reference as described in any one of claim 1-6
Point choosing method chooses location reference point, using the location reference point of selection as reference mode needed for location Calculation；
The position of positioning terminal is shown on the location drawing according to reference mode.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088717A (en) * | 2009-12-03 | 2011-06-08 | 北京时代凌宇科技有限公司 | Method, device and system for screening data |
| CN103220781A (en) * | 2013-04-24 | 2013-07-24 | 哈尔滨工业大学深圳研究生院 | Method and system of locating wireless sensor network static target |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088717A (en) * | 2009-12-03 | 2011-06-08 | 北京时代凌宇科技有限公司 | Method, device and system for screening data |
| CN103220781A (en) * | 2013-04-24 | 2013-07-24 | 哈尔滨工业大学深圳研究生院 | Method and system of locating wireless sensor network static target |
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