CN106428122B - Train locating method based on vehicle-ground wireless communication device signal intensity - Google Patents
Train locating method based on vehicle-ground wireless communication device signal intensity Download PDFInfo
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- CN106428122B CN106428122B CN201610851434.1A CN201610851434A CN106428122B CN 106428122 B CN106428122 B CN 106428122B CN 201610851434 A CN201610851434 A CN 201610851434A CN 106428122 B CN106428122 B CN 106428122B
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- 230000004807 localization Effects 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 claims description 5
- 238000004422 calculation algorithm Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
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Abstract
The present invention provides a kind of train locating method based on vehicle-ground wireless communication device signal intensity.This method includes：Gather signal strength and device identification of the train in each vehicle-ground wireless communication equipment of current position, the signal strength matrix for each vehicle-ground wireless communication equipment that structure train is collected in current location；The signal strength location database built in advance according to signal strength matrix inquiry, raw signal strength matrix most like with the signal strength matrix in the signal strength location database is obtained, the most like corresponding positional information of raw signal strength matrix stored in the signal strength location database is determined as to the current location of the train.The signal strength that the present invention is presently in the vehicle-ground wireless communication equipment of position by gathering train, and it is inferred to the position that train is presently in using the signal strength location database and matrix distance computational algorithm that pre-establish, so as to achieve the purpose that to position municipal rail train.
Description
Technical field
The present invention relates to train positioning and communicating technical field, more particularly to one kind are strong based on vehicle-ground wireless communication device signal
The train locating method of degree.
Background technology
At present, location technology based on wireless telecom equipment signal strength positioning, mobile terminal location etc. indoors
There is wide application in field.This positioning method is without extra equipment, and cost is relatively low, and the mode of wireless location is only
Scan for wireless signals intensity, it is not necessary to access signalling arrangement, can complete to position by programming.
At present in urban track traffic, subway train automatic control system carries out train using track and mobile unit
Positioning in real time.Also without a kind of municipal rail train localization method based on vehicle-ground wireless communication device signal intensity.
The content of the invention
The embodiment provides a kind of train locating method based on vehicle-ground wireless communication device signal intensity, with
Realize and localization method is carried out to train based on vehicle-ground wireless communication device signal intensity.
To achieve these goals, this invention takes following technical solution.
A kind of municipal rail train localization method based on vehicle-ground wireless communication device signal intensity, including：
Gather signal strength and device identification of the train in each vehicle-ground wireless communication equipment of current position, structure row
The signal strength matrix for each vehicle-ground wireless communication equipment that car is collected in current location；
The signal strength location database built in advance according to signal strength matrix inquiry, obtains the signal strength
The raw signal strength matrix most like with the signal strength matrix in location database, by the signal strength position data
The most like corresponding positional information of raw signal strength matrix stored in storehouse is determined as the current location of the train.
Further, each car-ground radio being presently in using radio receiver collection train at position is led to
Before MAC Address and the signal strength of believing equipment, further include：
Using the wireless signal in radio receiver scanning space come with obtaining each car of the train at diverse location
The signal strength of wireless telecom equipment and device identification, and by each vehicle-ground wireless communication at train position and the train position
In signal strength location database, each car-ground radio at position leads to the signal strength and device identification associated storage of equipment
Believe the signal strength composition raw signal strength matrix of equipment, associated storage is each in the signal strength location database
The raw signal strength matrix of each vehicle-ground wireless communication equipment of position correspondence and device identification.
Further, the device identification is the MAC address of equipment.
Further, the signal strength of each vehicle-ground wireless communication equipment of the collection train in current position and
Device identification, the signal strength matrix for each vehicle-ground wireless communication equipment that structure train is collected in current location, including:
In the online acquisition stage, continually scan for the wireless signal in space by using radio receiver and work as to obtain train
The device identification of each vehicle-ground wireless communication equipment at preceding present position and corresponding signal strength, structure train is in present bit
The signal strength matrix of each vehicle-ground wireless communication equipment collected is put,
Further, the signal strength location database built in advance according to signal strength matrix inquiry,
Raw signal strength matrix most like with the signal strength matrix in the signal strength location database is obtained, by described in
The most like corresponding positional information of raw signal strength matrix stored in signal strength location database is determined as institute
The current location of train is stated, including：
After the signal strength matrix at some position is obtained, by the signal strength matrix successively with signal strength position
The each raw signal strength matrix stored in database is compared respectively.Also, by signal strength matrix and original letter
Number intensity matrix relatively before, first by the device identification of each vehicle-ground wireless communication equipment of collection and raw signal strength matrix
The device identification of associated each vehicle-ground wireless communication equipment is compared, after the comparative result of device identification is inconsistent,
The comparison operation of current raw signal strength matrix is abandoned, next raw signal strength matrix is chosen, restarts to compare and set
Standby mark；
Device identification comparative result for after consistent, then calculate signal strength matrix and raw signal strength matrix it
Between distance, the corresponding distance of each raw signal strength matrix is stored, is calculating and is storing signal strength position
After the distance between all raw signal strength matrixes and the signal strength matrix for being stored in database, by all distances
Be compared, the shortest raw signal strength matrix of selected distance, by this apart from shortest raw signal strength matrix with it is described
The most like raw signal strength matrix of signal strength matrix；
The most like corresponding position of raw signal strength matrix that will be stored in the signal strength location database
Confidence ceases the current location for being determined as the train.
The embodiment of the present invention is worked as by gathering train it can be seen from the technical solution provided by embodiments of the invention described above
The signal strength of the vehicle-ground wireless communication equipment of preceding present position, and utilize the signal strength location database and square pre-established
Battle array is inferred to the position that train is presently in apart from computational algorithm, so as to achieve the purpose that to position municipal rail train.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of municipal rail train positioning based on vehicle-ground wireless communication device signal intensity provided in an embodiment of the present invention
The process flow flow figure of method；
Fig. 2 is a kind of municipal rail train positioning based on vehicle-ground wireless communication device signal intensity provided in an embodiment of the present invention
Method schematic.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that what is used in the specification of the present invention arranges
Diction " comprising " refer to there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their groups.It should be understood that when we claim member
Part is " connected " or during " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) there is the meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the implication of overly formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not form the restriction to the embodiment of the present invention.
The embodiment of the present invention is in order to obtain the position data of municipal rail train, there is provided one kind is based on vehicle-ground wireless communication equipment
The municipal rail train localization method of signal strength.The process flow of this method as shown in Figure 1, the principle of this method as shown in Fig. 2, side
Method can be divided into following steps：
Step 1, using radio receiver, that is, wireless network card, wireless signal in scanning space obtains train in difference
The equipment mark of each vehicle-ground wireless communication equipment (infrastructure device in WLAN, such as AP casees, AP antennas) at position
Knowledge and signal strength.
The said equipment mark can be MAC (Media Access Control, media access control) address of equipment, use
Different MAC Address sets train position and each vehicle-ground wireless communication of the train position to distinguish different signalling arrangements
Standby signal strength and device identification associated storage are in signal strength location database, each vehicle-ground wireless communication at position
The signal strength composition raw signal strength matrix of equipment.
Therefore, associated storage each vehicle-ground wireless communication equipment of each position correspondence in signal strength location database
Raw signal strength matrix and device identification.
In the gatherer process of the signal strength of vehicle-ground wireless communication equipment, first setting starting collection position and end gather
Position, then since starting gathers position, the acquisition interval distance (usually 20 meters to 50 meters desirable) of setting is moved successively, successively
Each collection position is selected, completes in each collection position device identification and the signal strength of each vehicle-ground wireless communication equipment
Collecting work.
Step 2, online acquisition stage, by using radio receiver, that is, wireless network card, continually scan for the nothing in space
Line signal is strong to obtain the device identification for each vehicle-ground wireless communication equipment that train is presently at position and corresponding signal
Degree, the signal strength matrix for each vehicle-ground wireless communication equipment that structure train is collected in current location, to determine train position
Put and prepare.
Step 3, the signal strength location database built in advance according to the inquiry of signal strength matrix, it is strong to obtain the signal
Spend raw signal strength matrix most like with the signal strength matrix in location database.
In the query process for some position, it is necessary to by the signal strength matrix of the collection of some position successively with letter
The each raw signal strength matrix stored in number intensity locations database is compared respectively.Also, by signal strength square
Before battle array is compared with raw signal strength matrix, it is necessary to first by the device identification of each vehicle-ground wireless communication equipment of collection and original
The device identification of each vehicle-ground wireless communication equipment of beginning signal strength matrix correlation is compared, in the comparison knot of device identification
After fruit is inconsistent, the comparison operation of current raw signal strength matrix is abandoned.Next raw signal strength matrix is chosen, weight
Newly start to compare device identification.
Device identification comparative result for after consistent, then calculate signal strength matrix and raw signal strength matrix it
Between distance, which can be Euclidean distance.The corresponding Euclidean distance of each raw signal strength matrix is stored,
Calculate and store between all the raw signal strength matrixes and signal strength matrix stored in signal strength location database
Distance after, all distances are compared, the shortest raw signal strength matrix of selected distance, by this apart from shortest original
Beginning signal strength matrix and the most like raw signal strength matrix of signal strength matrix.
Then, the most like raw signal strength matrix stored in the signal strength location database is corresponded to
Positional information be determined as the current location of the train, obtain the positioning result of train.
In conclusion the signal that the embodiment of the present invention is presently in the vehicle-ground wireless communication equipment of position by gathering train
Intensity, and be presently in using the signal strength location database and matrix distance computational algorithm pre-established to be inferred to train
Position, so as to achieve the purpose that to position municipal rail train.
The embodiment of the present invention using the municipal rail train localization method of the signal strength based on vehicle-ground wireless communication equipment come pair
Train is positioned, and can will be greatly reduced the construction cost of municipal rail train in the case where ensuring safety, can also coordinate GPS
The equipment such as (Global Positioning System, global positioning system), accelerometer, realize train on the ground, underground
Integrated positioning.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
Realized by the mode of software plus required general hardware platform.Based on such understanding, technical scheme essence
On the part that contributes in other words to the prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used so that a computer equipment
(can be personal computer, server, either network equipment etc.) performs some of each embodiment of the present invention or embodiment
Method described in part.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device or
For system embodiment, since it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to method
The part explanation of embodiment.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates may or may not be it is physically separate, can be as the component that unit is shown or
Person may not be physical location, you can with positioned at a place, or can also be distributed in multiple network unit.Can root
Factually border needs to select some or all of module therein realize the purpose of this embodiment scheme.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (3)
- A kind of 1. municipal rail train localization method based on vehicle-ground wireless communication device signal intensity, it is characterised in that including：Signal strength and device identification of the train in each vehicle-ground wireless communication equipment of current position are gathered, structure train exists The signal strength matrix for each vehicle-ground wireless communication equipment that current location collects；The signal strength location database built in advance according to signal strength matrix inquiry, obtains the signal strength position The raw signal strength matrix most like with the signal strength matrix in database, by the signal strength location database The most like corresponding positional information of raw signal strength matrix of storage is determined as the current location of the train；The signal strength of each vehicle-ground wireless communication equipment of the collection train in current position and device identification, structure The signal strength matrix for each vehicle-ground wireless communication equipment that train is collected in current location, including:In the online acquisition stage, continually scan for the wireless signal in space to obtain the current institute of train by using radio receiver Locate the device identification of each vehicle-ground wireless communication equipment at position and corresponding signal strength, structure train is adopted in current location The signal strength matrix of each vehicle-ground wireless communication equipment collected；The signal strength location database built in advance according to signal strength matrix inquiry, it is strong to obtain the signal Raw signal strength matrix most like with the signal strength matrix in location database is spent, by the signal strength positional number It is determined as the present bit of the train according to the most like corresponding positional information of raw signal strength matrix stored in storehouse Put, including：After the signal strength matrix at some position is obtained, by the signal strength matrix successively with signal strength position data The each raw signal strength matrix stored in storehouse is compared respectively.Also, signal strength matrix and original signal is strong Before spending matrix relatively, first by the device identification of each vehicle-ground wireless communication equipment of collection and raw signal strength matrix correlation The device identification of each vehicle-ground wireless communication equipment be compared, in the comparative result of device identification after inconsistent, to abandon The comparison operation of current raw signal strength matrix, chooses next raw signal strength matrix, restarts to compare equipment mark Know；After the comparative result of device identification is consistent, then calculate between signal strength matrix and raw signal strength matrix Distance, the corresponding distance of each raw signal strength matrix is stored, and is being calculated and is being stored signal strength position data After the distance between all raw signal strength matrixes and the signal strength matrix for being stored in storehouse, all distances are carried out Compare, the shortest raw signal strength matrix of selected distance, this is determined as and institute apart from shortest raw signal strength matrix State the most like raw signal strength matrix of signal strength matrix；By the corresponding position letter of the most like raw signal strength matrix stored in the signal strength location database Breath is determined as the current location of the train.
- 2. the municipal rail train localization method according to claim 1 based on vehicle-ground wireless communication device signal intensity, it is special Sign is, the signal strength of each vehicle-ground wireless communication equipment of the collection train in current position and device identification it Before, further include：Each car-ground radio of the train at diverse location is obtained using the wireless signal in radio receiver scanning space The signal strength of communication equipment and device identification, and by each vehicle-ground wireless communication equipment at train position and the train position Signal strength and device identification associated storage in signal strength location database, each car-ground radio at each position leads to Believe the signal strength composition raw signal strength matrix of equipment, associated storage is each in the signal strength location database The raw signal strength matrix of each vehicle-ground wireless communication equipment of position correspondence and device identification.
- 3. the municipal rail train localization method according to claim 2 based on vehicle-ground wireless communication device signal intensity, it is special Sign is that the device identification is the MAC address of equipment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107585181A (en) * | 2017-08-11 | 2018-01-16 | 北京交通大学 | A kind of train positioning system based on deep learning |
| CN110139207B (en) * | 2018-02-08 | 2021-04-06 | 北京神州泰岳软件股份有限公司 | Subway positioning method and device based on mobile communication |
| CN109168129B (en) * | 2018-08-08 | 2020-10-20 | 贵阳市城市轨道交通有限公司 | Positioning system and method based on wireless local area network WLAN |
| CN110450821A (en) * | 2019-08-19 | 2019-11-15 | 武汉虹信通信技术有限责任公司 | A kind of train position information real time acquiring method and device |
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