CN107613464A - A kind of wireless sensor network positioning system - Google Patents
A kind of wireless sensor network positioning system Download PDFInfo
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- CN107613464A CN107613464A CN201711030600.2A CN201711030600A CN107613464A CN 107613464 A CN107613464 A CN 107613464A CN 201711030600 A CN201711030600 A CN 201711030600A CN 107613464 A CN107613464 A CN 107613464A
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Abstract
The invention discloses a kind of wireless sensor network positioning system, the system is positioned target including one or more, the recognition node of Zigebee modules and big dipper module is inside set, for entering interacting for row information with the task management node being arranged in wireless card reading base station of one or more；The relative distance computing module calculated for carrying out each recognition node relative to the relative distance of each wireless card reader；Recognition node angle acquisition module, for carrying out unknown node and the angle of adjacent three known recognition nodes compositions by the coordinate data of big dipper module；Server, for carrying out the acquisition of unknown node coordinate data according to above-mentioned relative distance and angle.The present invention can reduce workload and complexity in position fixing process, while can improve the accuracy of positioning.
Description
Technical field
The present invention relates to communication technique field, and in particular to a kind of wireless sensor network positioning system.
Background technology
With the development of MEMS, on-chip system, radio communication and Digital Electronic Technique, wireless sensor network is made
For a kind of new Information acquisition pattern, there is the characteristics of low-power consumption, low cost, distribution and self-organizing, have huge
Big application prospect.Wireless sensor network is by substantial amounts of static or movement sensor structure in a manner of self-organizing and multi-hop
Into wireless network, with collaboratively perceive, gather, handle and transmission network covering geographic area in be perceived object information,
And finally these information are sent to the owner of network.
For wireless sensor network, location technology is the key component of its application of function, and at present and correlation is led
The focus of field technique personnel research.In most wireless senser application field, the data of perception are only knowing sensing
It is just meaningful in the case of device positional information.Meanwhile specify sensor node position and can improve router efficiency, be network
There is provided NameSpace, to deployment side offer network covering quality, realize network load balancing and network topology self
Configuration etc..
Location algorithm in radio sensing network is generally divided into the location algorithm based on distance and calculated apart from unrelated positioning
Method.Positioned apart from unrelated location algorithm generally by the single-hop distance substantially estimated, its positioning precision is not high.
Compared to apart from unrelated location algorithm, the location algorithm based on distance is easy to hardware realization, is widely used.Based on
In numerous ranging technologies of the location algorithm of distance, the communication payload and implementation complexity of RSSI ranging technologies are relatively low, at present quilt
Extensive use.But in current location technology, the big problem of generally existing position error, and portion of techniques is to sensor
Node complexity requires higher, and positioning cost is relatively also high.
The content of the invention
To solve the above problems, the invention provides a kind of wireless sensor network positioning system, position fixing process can be reduced
In workload and complexity, while the accuracy of positioning can be improved.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of wireless sensor network positioning system, the system are positioned target including one or more, in addition to
Recognition node, Zigebee modules and big dipper module are inside set, for being arranged at wireless card reading base with one or more
Task management node in standing enters the interaction of row information；
Relative distance computing module, for obtaining each recognition node phase by calculating RSSI wireless signal strengths information
Recognition node and each are completed for the relative distance A of each task management node, and by bilateral bidirectional ranging algorithm SDS-TWR
The Relative ranging B for management node of being engaged in, the calculating output of final distance is carried out in combination with two kinds of relative distances of acquisition；
Recognition node angle acquisition module, for carrying out unknown node and adjacent three by the coordinate data of big dipper module
The angle of known recognition node composition；
Server, for carrying out the acquisition of unknown node coordinate data according to above-mentioned relative distance and angle.
Preferably, noise suppression module is additionally provided with the recognition node.
Preferably, the signal of the recognition node output passes through Zigebee modules respectively after noise suppression resume module
Task management node is sent to big dipper module simultaneously.
Preferably, the big dipper module carries out the transmission of data by the way of short message communication.
Preferably, the bilateral bidirectional ranging algorithm SDS-TWR specifically comprises the following steps：
Recognition node sends first ranging data bag to task management node, if task management node proper reception of this
Packet, then return to hardware response and give user's identification node, and ask to produce transmission delay T1；
Recognition node calculates transmission delay T1, while this data is sent into task management node, and waits task
The hardware response of management node；
Task management node reads the relevant parameter that recognition node is sent, and is recognition node and task management node second
Secondary ranging prepares；
T2 is sent to recognition node by task management node by the way that processing delay T2 is calculated；
Recognition node receives the ranging data bag of task management node, automatic to send hardware response to task management node,
Task management node will calculate propagation delay T3 according to the hardware response；
Task management node calculates propagation delay T3, and T3 is sent into recognition node, and waits the hardware of recognition node
Response；
Recognition node reads the T3 that task management node is sent, and calculates processing delay T4；
Recognition node calculates the relative distance of recognition node and task management node according to T1, T2, T3, T4.
Preferably, the relative distance computing module carries out the calculating output of final relative distance by below equation：
30% relative distance A+70% relative distances B.
Preferably, the relative distance computing module is preferentially using the data transmitted by Zigebee modules.
The invention has the advantages that：
Have the advantages that stability is good, positioning precision is high, arithmetic speed is fast and scalability is strong, and precision controlling can be existed
, can to greatest extent can in reduction system further, since SDS-TWR location technologies use linear frequency modulation spread spectrum technology within 1M
Multi-path jamming, noise jamming existing for energy；Using measuring method is come and gone in measuring method, location algorithm is reduced to system clock
Synchronous strict demand, SDS-TWR location technologies and RSSI wireless signal strength distance computation techniques are combined, further carried
The high positioning precision of whole system.
Embodiment
In order that objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
The embodiments of the invention provide a kind of wireless sensor network positioning system, the system includes one or more and determined
Position target, in addition to
Recognition node, Zigebee modules and big dipper module are inside set, for being arranged at wireless card reading base with one or more
Task management node in standing enters the interaction of row information；
Relative distance computing module, for obtaining each recognition node phase by calculating RSSI wireless signal strengths information
Recognition node and each are completed for the relative distance A of each task management node, and by bilateral bidirectional ranging algorithm SDS-TWR
The Relative ranging B for management node of being engaged in, the calculating output of final distance is carried out in combination with two kinds of relative distances of acquisition；
Recognition node angle acquisition module, for carrying out unknown node and adjacent three by the coordinate data of big dipper module
The angle of known recognition node composition；
Server, for carrying out the acquisition of unknown node coordinate data according to above-mentioned relative distance and angle.
Noise suppression module is additionally provided with the recognition node.The signal of the recognition node output is through noise suppression module
Task management node is sent to by Zigebee modules and big dipper module simultaneously respectively after processing.
The big dipper module carries out the transmission of data by the way of short message communication.
The bilateral bidirectional ranging algorithm SDS-TWR specifically comprises the following steps：
Recognition node sends first ranging data bag to task management node, if task management node proper reception of this
Packet, then return to hardware response and give user's identification node, and ask to produce transmission delay T1；
Recognition node calculates transmission delay T1, while this data is sent into task management node, and waits task
The hardware response of management node；
Task management node reads the relevant parameter that recognition node is sent, and is recognition node and task management node second
Secondary ranging prepares；
T2 is sent to recognition node by task management node by the way that processing delay T2 is calculated；
Recognition node receives the ranging data bag of task management node, automatic to send hardware response to task management node,
Task management node will calculate propagation delay T3 according to the hardware response；
Task management node calculates propagation delay T3, and T3 is sent into recognition node, and waits the hardware of recognition node
Response；
Recognition node reads the T3 that task management node is sent, and calculates processing delay T4；
Recognition node calculates the relative distance of recognition node and task management node according to T1, T2, T3, T4.
The calculating that the relative distance computing module carries out final relative distance by below equation exports：30% it is relative away from
From A+70% relative distances B.The relative distance computing module preferentially enters row distance using the data transmitted by Zigebee modules
Calculate.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of wireless sensor network positioning system, the system is positioned target including one or more, it is characterised in that also
Including
Recognition node, Zigebee modules and big dipper module are inside set, for being arranged at one or more in wireless card reading base station
Task management node enter the interaction of row information；
Relative distance computing module, for by calculate RSSI wireless signal strengths information so as to obtain each recognition node relative to
The relative distance A of each task management node, and recognition node and each task pipe are completed by bilateral bidirectional ranging algorithm SDS-TWR
The Relative ranging B of node is managed, the calculating output of final distance is carried out in combination with two kinds of relative distances of acquisition；
Recognition node angle acquisition module, for being carried out by the coordinate data of big dipper module known to unknown node and adjacent three
The angle of recognition node composition；
Server, for carrying out the acquisition of unknown node coordinate data according to above-mentioned relative distance and angle.
2. a kind of wireless sensor network positioning system as claimed in claim 1, it is characterised in that in the recognition node also
Provided with noise suppression module.
A kind of 3. wireless sensor network positioning system as claimed in claim 2, it is characterised in that the recognition node output
Signal task management section is sent to by Zigebee modules and big dipper module simultaneously respectively after noise suppression resume module
Point.
4. a kind of wireless sensor network positioning system as claimed in claim 3, it is characterised in that the big dipper module uses
The mode of short message communication carries out the transmission of data.
A kind of 5. wireless sensor network positioning system as claimed in claim 1, it is characterised in that the bilateral bidirectional ranging
Algorithm SDS-TWR specifically comprises the following steps：
Recognition node sends first ranging data bag to task management node, if task management node proper reception of this data
Bag, then return to hardware response and give user's identification node, and ask to produce transmission delay T1；
Recognition node calculates transmission delay T1, while this data is sent into task management node, and waits task management
The hardware response of node；
Task management node reads the relevant parameter that recognition node is sent, and is second of the survey of recognition node and task management node
Away from preparation；
T2 is sent to recognition node by task management node by the way that processing delay T2 is calculated；
Recognition node receives the ranging data bag of task management node, automatic to send hardware response to task management node, task
Management node will calculate propagation delay T3 according to the hardware response；
Task management node calculates propagation delay T3, and T3 is sent into recognition node, and waits the hardware response of recognition node；
Recognition node reads the T3 that task management node is sent, and calculates processing delay T4；
Recognition node calculates the relative distance of recognition node and task management node according to T1, T2, T3, T4.
6. a kind of wireless sensor network positioning system as claimed in claim 1, it is characterised in that the relative distance calculates
The calculating that module carries out final relative distance by below equation exports：30% relative distance A+70% relative distances B.
7. a kind of wireless sensor network positioning system as claimed in claim 1, it is characterised in that the relative distance calculates
Module is preferentially using the data transmitted by Zigebee modules.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108333558A (en) * | 2018-02-07 | 2018-07-27 | 南京邮电大学 | A kind of method that Tof and Toda are quickly measured in indoor locating system |
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| CN103281239A (en) * | 2013-06-14 | 2013-09-04 | 威海东兴电子有限公司 | Zigbee wireless sensor gateway based on Beidou satellite communication |
| WO2014056159A1 (en) * | 2012-10-10 | 2014-04-17 | Broadcom Corporation | System and method of wsn-assisted location services |
| CN105699938A (en) * | 2016-01-28 | 2016-06-22 | 北京麦芯科技有限公司 | An accurate positioning method based on wireless signals and an apparatus thereof |
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| CN102573058A (en) * | 2012-01-16 | 2012-07-11 | 上海齐汇通讯技术有限公司 | System and method for accurately positioning wireless sensor network |
| WO2014056159A1 (en) * | 2012-10-10 | 2014-04-17 | Broadcom Corporation | System and method of wsn-assisted location services |
| CN103281239A (en) * | 2013-06-14 | 2013-09-04 | 威海东兴电子有限公司 | Zigbee wireless sensor gateway based on Beidou satellite communication |
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| CN105785352A (en) * | 2016-04-22 | 2016-07-20 | 李明科 | Anti-loss monitoring method and positioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108333558A (en) * | 2018-02-07 | 2018-07-27 | 南京邮电大学 | A kind of method that Tof and Toda are quickly measured in indoor locating system |
| CN108333558B (en) * | 2018-02-07 | 2021-11-16 | 南京邮电大学 | Method for rapidly measuring Tof and Tdoa in indoor positioning system |
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