CN106714096A - Bluetooth based mobile-phone emergency positioning system and method - Google Patents
Bluetooth based mobile-phone emergency positioning system and method Download PDFInfo
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- CN106714096A CN106714096A CN201510453558.XA CN201510453558A CN106714096A CN 106714096 A CN106714096 A CN 106714096A CN 201510453558 A CN201510453558 A CN 201510453558A CN 106714096 A CN106714096 A CN 106714096A
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Abstract
The invention provides a Bluetooth based mobile-phone emergency positioning system and method. The system comprises a Bluetooth communication module, a data analysis module, a positioning calculation module, a data storage module, a traditional positioning module, a map processing module and an interface display. The method comprises the steps of positioning in a traditional manner, inquiring neighbor information, local positioning calculation and sharing position information. Self-positioning nodes is realized via mutual information transmission among Blueooth mobile phones, and help can be provided for victims and rescuers; and the Bluetooth based mobile-phone positioning system is convenient to use, and has practical application significance in rescuing as well as outdoor exploration activities.
Description
Technical field
Present invention relates particularly to a kind of mobile phone based on bluetooth emergent alignment system and method.
Background technology
For the bluetooth cellular phone alignment system of case of emergency, can solve the problem that traditional disaster relief alignment system needs to rely on the problem of default infrastructure device.After the disasters such as earthquake, tsunami, forest fire are met with, the network facilities is easily received damage, so as to destroy communication network, the people for being trapped in disaster area cannot be write to each other with the external world.Even if worked out now it is various can be used for the provisional communication scheme of the disaster relief, but people that are stranded indoor or being buried cannot be positioned by GPS or base station, it is still a problem that victims how are positioned rapidly.
The content of the invention
It is to solve above-mentioned deficiency that the purpose of the present invention is, there is provided a kind of mobile phone based on bluetooth is met an urgent need alignment system and method.
The purpose of the present invention is achieved through the following technical solutions：
A kind of mobile phone based on bluetooth is met an urgent need localization method, is comprised the following steps that：
Traditional approach is positioned：Node is positioned by traditional approach including GPS, architecture etc. first, obtains local position, then the node turns into beaconing nodes, confidence level is set to 1, local position can not be obtained, first judges whether local node moves, keep original local position information（Including confidence level）Constant, upon displacement, current location cannot be temporarily obtained, it is necessary to be drawn by the follow-up location Calculation stage；
Inquiry neighbor information：Node carries out RSSI values, the position of neighbor node and corresponding confidence level, the priority of each neighbor node that inquire-receive is arrived to neighbor node, completes to inquire about using bluetooth；By formula
Wherein, it is RSSI that nodal distance d is received,
For the RSSI that nodal distance 1m is received；
The distance of the neighbor node and local node is calculated using the RSSI values of neighbor node；
Calculating is locally-located：RSSI and positional information that node is obtained using inquiry phase, carry out that calculating is locally-located, node in the adjacent node that inquiry is obtained is less than 3, adjacent node is merged into history adjacent node, history adjacent node represents the historical record of neighbor node, the node in history adjacent node is still less than 3, location Calculation can not be carried out, at this moment first judge whether local node has moved, without movement, then node keeps local position information or cannot positioning states Information invariability；Local node has been moved, then generation cannot positioning states information, represent node can not be positioned in this time, this position；Node in history adjacent node is than or equal to 3, can carry out the location Calculation of the weighted least-squares method based on Taylor series expansion；Node in the adjacent node that inquiry is obtained is weighted the location Calculation of least square method more than or equal to 3；
Sharing position information：Node by traditional approach after positioning, inquiring about neighbor information and these stages of calculating are locally-located, acquired positional information will be shared to neighbor node, then it is diffused into whole network, positional information includes the position coordinates after the success of other node locatings, and during the success of certain node no-fix, with the distance between its neighbor node or with the hop count information between positioning node.
RSSI is received signal strength value.
A kind of mobile phone based on bluetooth is met an urgent need alignment system, including bluetooth communication, data resolution module, location Calculation module, data memory module, traditional locating module, maps processing module and interface display,
Bluetooth communication：Periphery mobile phone is inquired about, positional information is obtained, by bluetooth to the periphery mobile phone acquired node location information of shared the machine；
Data resolution module：The parsing of packet, obtains node location information；
Location Calculation module：By the position of other nodes carry out that calculating is locally-located；
Data memory module：The storage acquired node location information of the machine；
Traditional locating module：Local position coordinate is obtained by traditional approach such as GPS, architectures；
Maps processing module：The position coordinates of local and other nodes is marked on map, is easy to user to check；
Interface display：The final presentation of information of software systems, including local and other nodes information.
The present invention has following beneficial effect：
The present invention can be transmitted by the mutual information between bluetooth cellular phone, realize node self-localization, and help is brought to victims and rescue personnel.Mobile phone positioning system based on bluetooth, it is easy to use, except for disaster relief, for application scenarios such as field exploration activities, also having significant practical applications.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is workflow diagram of the invention；
Fig. 3 is traditional approach positioning flow figure of the invention；
Fig. 4 is location Calculation flow chart of the invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of emergent localization method of mobile phone based on bluetooth, comprises the following steps that：
Traditional approach is positioned：Node is positioned by traditional approach including GPS, architecture etc. first, obtains local position, then the node turns into beaconing nodes, confidence level is set to 1, local position can not be obtained, first judges whether local node moves, keep original local position information（Including confidence level）Constant, upon displacement, current location cannot be temporarily obtained, it is necessary to be drawn by the follow-up location Calculation stage；
Inquiry neighbor information：Node carries out RSSI values, the position of neighbor node and corresponding confidence level, the priority of each neighbor node that inquire-receive is arrived to neighbor node, completes to inquire about using bluetooth；By formula
Wherein,It is the RSSI that nodal distance d is received,For the RSSI that nodal distance 1m is received；
The distance of the neighbor node and local node is calculated using the RSSI values of neighbor node；
Calculating is locally-located：RSSI and positional information that node is obtained using inquiry phase, carry out that calculating is locally-located, node in the adjacent node that inquiry is obtained is less than 3, adjacent node is merged into history adjacent node, history adjacent node represents the historical record of neighbor node, the node in history adjacent node is still less than 3, location Calculation can not be carried out, at this moment first judge whether local node has moved, without movement, then node keeps local position information or cannot positioning states Information invariability；Local node has been moved, then generation cannot positioning states information, represent node can not be positioned in this time, this position；Node in history adjacent node is than or equal to 3, can carry out the location Calculation of the weighted least-squares method based on Taylor series expansion；Node in the adjacent node that inquiry is obtained is weighted the location Calculation of least square method more than or equal to 3；
Sharing position information：Node by traditional approach after positioning, inquiring about neighbor information and these stages of calculating are locally-located, acquired positional information will be shared to neighbor node, then it is diffused into whole network, positional information includes the position coordinates after the success of other node locatings, and during the success of certain node no-fix, with the distance between its neighbor node or with the hop count information between positioning node.
RSSI is received signal strength value.
A kind of mobile phone based on bluetooth is met an urgent need alignment system, including bluetooth communication, data resolution module, location Calculation module, data memory module, traditional locating module, maps processing module and interface display,
Bluetooth communication：Periphery mobile phone is inquired about, positional information is obtained, by bluetooth to the periphery mobile phone acquired node location information of shared the machine；
Data resolution module：The parsing of packet, obtains node location information；
Location Calculation module：By the position of other nodes carry out that calculating is locally-located；
Data memory module：The storage acquired node location information of the machine；
Traditional locating module：Local position coordinate is obtained by traditional approach such as GPS, architectures；
Maps processing module：The position coordinates of local and other nodes is marked on map, is easy to user to check；
Interface display：The final presentation of information of software systems, including local and other nodes information.
Workflow：Initialization bluetooth module；
Local position coordinate is obtained by traditional approach such as GPS, architectures；
Inquiry information of neighbor nodes；
Node location information to obtaining is parsed and stored；
If local position coordinate, as beaconing nodes can be obtained by traditional approach；
By the positional information of neighbor node carry out that calculating is locally-located；
Local position and other node locations are included on map；
To the shared local position of neighbor node and the position of other nodes for having obtained.
Claims (3)
1. the emergent localization method of a kind of mobile phone based on bluetooth, it is characterised in that：Comprise the following steps that：
Traditional approach is positioned：Node is positioned by traditional approach including GPS, architecture etc. first, obtains local position, then the node turns into beaconing nodes, confidence level is set to 1, local position can not be obtained, first judges whether local node moves, keep original local position information（Including confidence level）Constant, upon displacement, current location cannot be temporarily obtained, it is necessary to be drawn by the follow-up location Calculation stage；
Inquiry neighbor information：Node carries out RSSI values, the position of neighbor node and corresponding confidence level, the priority of each neighbor node that inquire-receive is arrived to neighbor node, completes to inquire about using bluetooth；By formula
Wherein,It is the RSSI that nodal distance d is received,For the RSSI that nodal distance 1m is received；
The distance of the neighbor node and local node is calculated using the RSSI values of neighbor node；
Calculating is locally-located：RSSI and positional information that node is obtained using inquiry phase, carry out that calculating is locally-located, node in the adjacent node that inquiry is obtained is less than 3, adjacent node is merged into history adjacent node, history adjacent node represents the historical record of neighbor node, the node in history adjacent node is still less than 3, location Calculation can not be carried out, at this moment first judge whether local node has moved, without movement, then node keeps local position information or cannot positioning states Information invariability；Local node has been moved, then generation cannot positioning states information, represent node can not be positioned in this time, this position；Node in history adjacent node is than or equal to 3, can carry out the location Calculation of the weighted least-squares method based on Taylor series expansion；Node in the adjacent node that inquiry is obtained is weighted the location Calculation of least square method more than or equal to 3；
Sharing position information：Node by traditional approach after positioning, inquiring about neighbor information and these stages of calculating are locally-located, acquired positional information will be shared to neighbor node, then it is diffused into whole network, positional information includes the position coordinates after the success of other node locatings, and during the success of certain node no-fix, with the distance between its neighbor node or with the hop count information between positioning node.
2. the emergent localization method of a kind of mobile phone based on bluetooth as claimed in claim 1, it is characterised in that：Described RSSI is received signal strength value.
3. a kind of emergent alignment system of mobile phone based on bluetooth, including bluetooth communication, data resolution module, location Calculation module, data memory module, traditional locating module, maps processing module and interface display, it is characterised in that：
Bluetooth communication：Periphery mobile phone is inquired about, positional information is obtained, by bluetooth to the periphery mobile phone acquired node location information of shared the machine；
Data resolution module：The parsing of packet, obtains node location information；
Location Calculation module：By the position of other nodes carry out that calculating is locally-located；
Data memory module：The storage acquired node location information of the machine；
Traditional locating module：Local position coordinate is obtained by traditional approach such as GPS, architectures；
Maps processing module：The position coordinates of local and other nodes is marked on map, is easy to user to check；
Interface display：The final presentation of information of software systems, including local and other nodes information.
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| CN201510453558.XA CN106714096A (en) | 2015-07-29 | 2015-07-29 | Bluetooth based mobile-phone emergency positioning system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669469A (en) * | 2019-03-08 | 2020-09-15 | 富士施乐实业发展（中国）有限公司 | Multifunctional machine information acquisition system and method |
| CN112533129A (en) * | 2019-08-27 | 2021-03-19 | 北京金坤科创技术有限公司 | High-precision positioning method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111669469A (en) * | 2019-03-08 | 2020-09-15 | 富士施乐实业发展（中国）有限公司 | Multifunctional machine information acquisition system and method |
| CN112533129A (en) * | 2019-08-27 | 2021-03-19 | 北京金坤科创技术有限公司 | High-precision positioning method |
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Application publication date: 20170524 |