CN106428122A - Train locating method based on signal strength of train-ground wireless communication equipment - Google Patents
Train locating method based on signal strength of train-ground wireless communication equipment Download PDFInfo
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- CN106428122A CN106428122A CN201610851434.1A CN201610851434A CN106428122A CN 106428122 A CN106428122 A CN 106428122A CN 201610851434 A CN201610851434 A CN 201610851434A CN 106428122 A CN106428122 A CN 106428122A
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Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention provides a train locating method based on the signal strength of train-ground wireless communication equipment. The method comprises the following steps: collecting the signal strength and the equipment identification of each train-ground wireless communication equipment of a train at the current position, and constructing the collected signal strength matrix of each wireless communication equipment of the train at the current position; and querying the pre-established signal strength and position database according to the signal strength matrix, obtaining an original signal strength matrix which is most similar to the signal strength matrix in the signal strength and position database, and determining the position information corresponding to the most similar original signal strength matrix stored in the signal strength and position database as the current position of the train. According to the train locating method based on the signal strength of train-ground wireless communication equipment disclosed by the invention, the signal strength of the train-ground wireless communication equipment at the current position of the train is collected, and the pre-established signal strength and position database and a matrix distance calculation algorithm are used to infer the current position of the train, so that the purpose of locating a city rail train is achieved.
Description
Technical field
The present invention relates to train positioning and communicating technical field, more particularly to a kind of strong based on vehicle-ground wireless communication device signal
The train locating method of degree.
Background technology
At present, positioning, mobile terminal location etc. indoors of the location technology based on Wireless Telecom Equipment signal intensity
There is wide application in field.This positioning mode is without the need for 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, relies on programming just can complete positioning.
At present in urban track traffic, subway train automatic control system is carried out to train using track and mobile unit
Real-time positioning.Also there is no a kind of municipal rail train localization method based on vehicle-ground wireless communication device signal intensity.
Content of the invention
The embodiment provides a kind of train locating method based on vehicle-ground wireless communication device signal intensity, with
Realize carrying out localization method based on vehicle-ground wireless communication device signal intensity to train.
To achieve these goals, following technical scheme this invention takes.
A kind of municipal rail train localization method based on vehicle-ground wireless communication device signal intensity, including：
Collection train builds row in signal intensity and the device identification of each vehicle-ground wireless communication equipment of current position
The signal intensity matrix of each vehicle-ground wireless communication equipment that car is collected in current location；
According to the signal intensity location database that signal intensity matrix inquiry is built in advance, the signal intensity is obtained
The raw signal strength matrix most like with the signal intensity matrix in location database, by the signal intensity position data
In storehouse, the corresponding positional information of the described most like raw signal strength matrix of storage is defined as the current location of the train.
Further, described each car-ground radio at position is presently in using radio receiver collection train and leads to
Before the MAC Address of letter equipment and signal intensity, also include：
Train is obtained using the wireless signal in radio receiver scanning space on each car ground of various location
The signal intensity of Wireless Telecom Equipment and device identification, and by each vehicle-ground wireless communication at train position and the train position
The signal intensity of equipment and device identification associated storage are in signal intensity location database, and each car-ground radio at position leads to
The signal intensity composition raw signal strength matrix of letter equipment, in the signal intensity location database associated storage each
The raw signal strength matrix of position each vehicle-ground wireless communication equipment corresponding and device identification.
Further, described device identification is the MAC address of equipment.
Further, described collection train each vehicle-ground wireless communication equipment of current position signal intensity and
Device identification, builds the signal intensity matrix of each vehicle-ground wireless communication equipment that train is collected in current location, including:
In the online acquisition stage, wireless signal in space is continually scanned for by using radio receiver and is worked as obtaining train
The device identification of each vehicle-ground wireless communication equipment at front present position and corresponding signal intensity, build train in present bit
The signal intensity matrix of each vehicle-ground wireless communication equipment for collecting is put,
Further, the described signal intensity location database for being built according to signal intensity matrix inquiry in advance,
Most like with signal intensity matrix raw signal strength matrix in the signal intensity location database is obtained, will be described
In signal intensity location database, the corresponding positional information of the described most like raw signal strength matrix of storage is defined as institute
The current location of train is stated, including：
After the signal intensity matrix at certain position is obtained, by the signal intensity matrix successively with signal intensity position
Each raw signal strength matrix for storing in data base is compared respectively.Also, by signal intensity matrix and original letter
Before number intensity matrix compares, first by the device identification of each vehicle-ground wireless communication equipment of collection and raw signal strength matrix
The device identification of each vehicle-ground wireless communication equipment of association 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, restart to compare and set
Standby mark；
Device identification comparative result for after consistent, then calculate signal intensity matrix and raw signal strength matrix it
Between distance, each corresponding distance of raw signal strength matrix is stored, is being calculated and storing signal intensity position
After the distance between all raw signal strength matrixes and described signal intensity matrix for storing in data base, by all of distance
Be compared, the most short raw signal strength matrix of selected distance, by raw signal strength matrix most short for the distance with described
The most like raw signal strength matrix of signal intensity matrix；
By corresponding for the described most like raw signal strength matrix of storage in signal intensity location database position
Confidence breath is defined as the current location of the train.
The embodiment of the present invention be can be seen that by the technical scheme that embodiments of the invention described above are provided to work as by gathering train
The signal intensity of the vehicle-ground wireless communication equipment of front present position, and using the signal intensity location database for pre-building and square
Battle array is inferred to the position that train is presently in apart from computational algorithm, so as to reach the purpose positioned by municipal rail train.
The aspect that the present invention is added and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to using needed for embodiment description
Accompanying 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 accompanying drawings
Accompanying drawing.
Fig. 1 is that a kind of municipal rail train based on vehicle-ground wireless communication device signal intensity provided in an embodiment of the present invention is positioned
The handling process flow process figure of method；
Fig. 2 is that a kind of municipal rail train based on vehicle-ground wireless communication device signal intensity provided in an embodiment of the present invention is positioned
Method schematic.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Represent same or similar element or the element with same or like function to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, 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
Individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that arranging used in the description of the present invention
Diction " including " refers to there is the feature, integer, step, operation, element and/or component, but it is not excluded that existing or adding
Other features one or more, integer, step, operation, element, component and/or their group.It should be understood that when we claim unit
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or can also exist
Intermediary element.Additionally, " connection " used herein or " coupling " can include wireless connection or couple.Wording used herein
"and/or" includes one or more associated any cell for listing item and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein are (including technology art
Language and scientific terminology) have with art of the present invention in those of ordinary skill general understanding identical meaning.Should also
It is understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or excessively formal implication is explaining.
For ease of the understanding to the embodiment of the present invention, do by taking several specific embodiments as an example further below in conjunction with accompanying drawing
Explanation, and each embodiment does not constitute 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 a kind of based on vehicle-ground wireless communication equipment
The municipal rail train localization method of signal intensity.The handling process of the method is as shown in figure 1, the principle of the method is as shown in Fig. 2 side
Method can be divided into following steps：
Step 1, the use of radio receiver is wireless network card, the wireless signal in scanning space is obtaining train in difference
The equipment mark of each vehicle-ground wireless communication equipment (infrastructure device in WLAN, such as AP case, AP antenna etc.) at position
Know and signal intensity.
The said equipment mark can be MAC (Media Access Control, the media access control) address of equipment, use
Different MAC Address is distinguishing different signalling arrangements, and train position is set with each vehicle-ground wireless communication of the train position
Each vehicle-ground wireless communication of standby signal intensity and device identification associated storage in signal intensity location database, at position
The signal intensity composition raw signal strength matrix of equipment.
Therefore, associated storage each position each vehicle-ground wireless communication equipment corresponding in signal intensity location database
Raw signal strength matrix and device identification.
In the gatherer process of the signal intensity of vehicle-ground wireless communication equipment, first set starting collection position and terminate collection
Position, then from the beginning of starting collection position, move the acquisition interval distance (generally desirable 20 meters to 50 meters) of setting successively, successively
Each collection position is selected, and the device identification of each vehicle-ground wireless communication equipment and signal intensity is completed in each collection position
Collecting work.
Step 2, online acquisition stage, are wireless network card by using radio receiver, continually scan for the nothing in space
Line signal is strong come the device identification and corresponding signal for obtaining each vehicle-ground wireless communication equipment that train is presently at position
Degree, builds the signal intensity matrix of each vehicle-ground wireless communication equipment that train is collected in current location, is to determine train position
Put and prepare.
Step 3, the signal intensity location database for being built according to the inquiry of signal intensity matrix in advance, obtain the signal strong
The raw signal strength matrix most like with the signal intensity matrix in degree location database.
For certain position query script in, need by the signal intensity matrix of the collection of certain position successively with letter
Each raw signal strength matrix for storing in number intensity locations data base is compared respectively.Also, by signal intensity square
Before battle array is compared with raw signal strength matrix, need 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 intensity matrix correlation is compared, and ties in the comparison of device identification
After fruit is inconsistent, the comparison operation of current raw signal strength matrix is abandoned.Choose next raw signal strength matrix, weight
Newly start to compare device identification.
Device identification comparative result for after consistent, then calculate signal intensity matrix and raw signal strength matrix it
Between distance, the distance can be Euclidean distance.Each corresponding Euclidean distance of raw signal strength matrix is stored,
Calculate and store between all raw signal strength matrixes and signal intensity matrix for storing in signal intensity location database
Distance after, all of distance is compared, the most short raw signal strength matrix of selected distance, by the most short original of the distance
The beginning signal intensity matrix raw signal strength matrix most like with signal intensity matrix.
Then, the described most like raw signal strength matrix of storage in the signal intensity location database is corresponded to
Positional information be defined as the current location of the train, obtain the positioning result of train.
In sum, the embodiment of the present invention is by gathering the signal that train is presently in the vehicle-ground wireless communication equipment of position
Intensity, and be inferred to train using the signal intensity location database that pre-builds and matrix distance computational algorithm and be presently in
Position, so as to reach the purpose positioned by municipal rail train.
The embodiment of the present invention using the signal intensity based on vehicle-ground wireless communication equipment municipal rail train localization method come right
Train is positioned, and can will be greatly reduced the construction cost of municipal rail train, and can also coordinate GPS in the case of ensuring safety
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：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow process 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
Mode by software plus required general hardware platform is realizing.Based on such understanding, technical scheme essence
On the part that in other words prior art contributed can be embodied in the form of software product, the computer software product
Can be stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., use so that a computer equipment including some instructions
(can be personal computer, server, or network equipment etc.) executes some of each embodiment of the present invention or embodiment
Method described in part.
Each embodiment in this specification is all described by the way of going forward one by one, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.Especially for device or
For system embodiment, as which 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 the schematically wherein conduct
Separating component explanation unit can be or may not be physically separate, as the part that unit shows can be or
Person may not be physical location, you can be located at a place, or can also be distributed on multiple NEs.Can root
Factually border need select some or all of module therein to realize the purpose of this embodiment scheme.Ordinary skill
Personnel are not in the case of creative work is paid, you can to understand and implement.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (5)
1. a kind of municipal rail train localization method based on vehicle-ground wireless communication device signal intensity, it is characterised in that include：
Collection train is built train and exists in signal intensity and the device identification of each vehicle-ground wireless communication equipment of current position
The signal intensity matrix of each vehicle-ground wireless communication equipment that current location collects；
According to the signal intensity location database that signal intensity matrix inquiry is built in advance, the signal intensity position is obtained
The raw signal strength matrix most like with the signal intensity matrix in data base, by the signal intensity location database
The corresponding positional information of the described most like raw signal strength matrix of storage is defined as the current location of the train.
2. the municipal rail train localization method based on vehicle-ground wireless communication device signal intensity according to claim 1, which is special
Levy and be, described is presently in each vehicle-ground wireless communication equipment at position using radio receiver collection train
Before MAC Address and signal intensity, also include：
Each car-ground radio of train in various location is obtained using the wireless signal in radio receiver scanning space
The signal intensity of communication equipment and device identification, and by each vehicle-ground wireless communication equipment at train position and the train position
Signal intensity and device identification associated storage in signal intensity location database, each vehicle-ground wireless communication at position sets
Standby signal intensity composition raw signal strength matrix, each position of associated storage in the signal intensity location database
The raw signal strength matrix of each vehicle-ground wireless communication equipment corresponding and device identification.
3. the municipal rail train localization method based on vehicle-ground wireless communication device signal intensity according to claim 2, which is special
Levy and be, described device identification is the MAC address of equipment.
4. method according to claim 1, it is characterised in that described collection train is on each car ground of current position
The signal intensity of Wireless Telecom Equipment and device identification, each vehicle-ground wireless communication that structure train is collected in current location sets
Standby signal intensity matrix, including:
In the online acquisition stage, continually scan for wireless signal in space by using radio receiver to obtain the current institute of train
The device identification of each vehicle-ground wireless communication equipment at place position and corresponding signal intensity, build train and adopt in current location
The signal intensity matrix of each vehicle-ground wireless communication equipment for collecting.
5. method according to claim 4, it is characterised in that described inquires about advance structure according to the signal intensity matrix
The signal intensity location database that builds, obtains most like with the signal intensity matrix in the signal intensity location database
Raw signal strength matrix, the described most like raw signal strength matrix that will store in the signal intensity location database
Corresponding positional information is defined as the current location of the train, including：
After the signal intensity matrix at certain position is obtained, by the signal intensity matrix successively with signal intensity position data
Each raw signal strength matrix for storing in storehouse is compared respectively.Also, will be strong to signal intensity matrix and primary signal
Before degree matrix compares, 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, device identification comparative result for after inconsistent, abandoning
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 intensity matrix and raw signal strength matrix
Distance, each corresponding distance of raw signal strength matrix is stored, and is being calculated and is being stored signal intensity position data
After the distance between all raw signal strength matrixes and described signal intensity matrix for storing in storehouse, all of distance is carried out
Relatively, the most short raw signal strength matrix of selected distance, by raw signal strength matrix most short for the distance and the signal
The most like raw signal strength matrix of intensity matrix；
By corresponding for the described most like raw signal strength matrix of storage in signal intensity location database position letter
Breath is defined as the current location of the train.
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Cited By (4)
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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 |
| CN109168129A (en) * | 2018-08-08 | 2019-01-08 | 贵阳市城市轨道交通有限公司 | Positioning system and method based on WLAN WLAN |
| CN110139207A (en) * | 2018-02-08 | 2019-08-16 | 北京神州泰岳软件股份有限公司 | A kind of subway localization method and device based on mobile communication |
| 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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|---|---|
| CN106428122B (en) | 2018-04-17 |
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