CN105407530B - Tunnel placement method and device - Google Patents
Tunnel placement method and device Download PDFInfo
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- CN105407530B CN105407530B CN201510896068.7A CN201510896068A CN105407530B CN 105407530 B CN105407530 B CN 105407530B CN 201510896068 A CN201510896068 A CN 201510896068A CN 105407530 B CN105407530 B CN 105407530B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The embodiment of the invention discloses a kind of tunnel placement method and devices.This method comprises: obtaining the environmental parameter measured value of the positioning terminal if positioning terminal enters target tunnel；According to the environmental parameter measured value, and, the corresponding relationship between the environmental parameter value in the target tunnel and the location information in the target tunnel carries out tunnel placement to the positioning terminal.The present invention is realized and helps to be located at the effect that user on the move in tunnel is positioned by being positioned using the environmental parameter in tunnel to the driving vehicle in tunnel.
Description
Technical field
The present invention relates to location technology more particularly to a kind of tunnel placement method and devices.
Background technique
Currently, being usually used in the method positioned to driving vehicle is (Global Position System, the whole world GPS
Global position system) satellite positioning method, i.e. at least 3 satellite institutes in earth-circling 24 GPS satellites of positioning terminal reception
The position coordinates of transmitting, and accurate location of the driving vehicle in electronic map is determined in conjunction with electronic map.But work as vehicle row
It sails at tunnel, GPS satellite positioning system can not receive satellite-signal in tunnel, and then can not carry out to driving vehicle normal
Positioning.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of tunnel placement method and device, to be implemented without deployment signal
Transmitting equipment can help to be located at the purpose that user on the move is positioned in tunnel.
In a first aspect, the embodiment of the invention provides a kind of tunnel placement methods, comprising:
If positioning terminal enters target tunnel, the environmental parameter measured value of the positioning terminal is obtained；
According to the environmental parameter measured value, and, the environmental parameter value in the target tunnel and the target tunnel
Corresponding relationship between location information carries out tunnel placement to the positioning terminal.
Second aspect, the embodiment of the invention also provides a kind of tunnel placement devices, comprising:
Environmental parameter obtains module and obtains the environment of the positioning terminal if entering target tunnel for positioning terminal
Measured value of parameters；
Tunnel placement module is used for according to the environmental parameter measured value, and, the environmental parameter value in the target tunnel
Corresponding relationship between the location information in the target tunnel carries out tunnel placement to the positioning terminal.
The embodiment of the present invention is solved existing by being positioned using the environmental parameter in tunnel to driving vehicle in tunnel
In some location technologies, after vehicle enters tunnel, it can not be asked by GPS satellite positioning system what driving vehicle was positioned
Topic realizes the purpose for helping that user on the move is positioned in tunnel.
Detailed description of the invention
Fig. 1 is a kind of flow chart for tunnel placement method that the embodiment of the present invention one provides；
Fig. 2 is a kind of specific implementation method that the environmental parameter measured value of positioning terminal is obtained in the embodiment of the present invention one
Flow chart；
Fig. 3 is a kind of flow chart of tunnel placement method provided by Embodiment 2 of the present invention；
Fig. 4 is the schematic diagram of tunnel placement method provided by Embodiment 2 of the present invention；
Fig. 5 is the flow chart for another tunnel placement method that the embodiment of the present invention three provides；
Fig. 6 is the schematic diagram for the tunnel placement method that the embodiment of the present invention three provides；
Fig. 7 is a kind of structural schematic diagram for tunnel placement device that the embodiment of the present invention four provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.Exemplary reality is being discussed in greater detail
It should be mentioned that some exemplary embodiments are described as the processing or method described as flow chart before applying example.Although
Operations (or step) are described as the processing of sequence by flow chart, but many of these operations can be by concurrently, concurrently
Ground is implemented simultaneously.In addition, the sequence of operations can be rearranged.The processing when its operations are completed can be by
It terminates, it is also possible to have the additional step being not included in attached drawing.It is described processing can correspond to method, function, regulation,
Subroutine, subprogram etc..
In each embodiment provided by the present invention, it is previously mentioned environmental parameter and refers to ambient brightness and/or air pressure.According to tunnel
The type of the environmental parameter in road is different, and tunnel can be divided into three classes, respectively the tunnel of ambient brightness type, air-pressure type tunnel with
And the tunnel of ambient brightness and air-pressure type.The tunnel of ambient brightness type refers in database in relevant information corresponding with the tunnel
It include the corresponding relationship in the tunnel between each specific location and ambient brightness value.The tunnel of air-pressure type refer in database with
It include the corresponding relationship in the tunnel between each specific location and atmospheric pressure value in the corresponding relevant information in the tunnel.Ambient brightness
Refer in database in the corresponding relevant information in the tunnel with the tunnel of air-pressure type, had both included each specific location in the tunnel
Corresponding relationship between ambient brightness value, and include the corresponding relationship in the tunnel between each specific location and atmospheric pressure value.
Embodiment one
Fig. 1 is a kind of flow chart for tunnel placement method that the embodiment of the present invention one provides.The method of the present embodiment can be with
It is executed by tunnel placement device, which can be realized by way of hardware and/or software, and can be generally integrated in for mentioning
For being used cooperatively with the positioning terminal for obtaining positioning service in the location-server of positioning service.The positioning terminal can be
The portable mobile device of positioning device or user being configured on the vehicle that user is driven, such as mobile phone, tablet computer
And smartwatch etc..The databases of the location-server contain each tunnel relevant information include: tunnel title,
Geographical location information, the length in tunnel, tunnel type, air pressure of each position etc. in the distribution situation of lamps and lanterns and tunnel in tunnel.
The positioning terminal can carry out communication to location-server by internet to call the related letter in each tunnel as needed
Breath.
The tunnel placement method specifically includes:
If 110, positioning terminal enters target tunnel, the environmental parameter measured value of the positioning terminal is obtained.
In the present embodiment, the target tunnel refers to, tunnel title, the length of geographical location information, tunnel in the tunnel
Degree, tunnel type, the relevant informations such as air pressure of each position have been stored in and are positioning in the distribution situation of lamps and lanterns and tunnel in tunnel
In the database of server, and there are the tunnels of one-to-one relationship between the tunnel and each relevant information, it can fixed
It is found in the database of position server and the tunnel of the unique corresponding relevant information in the tunnel.
Typically, during carrying out navigator fix to positioning terminal, location-server can obtain positioning terminal in real time
Location information.It, can be to the positioning terminal after determining that positioning terminal enters target tunnel according to positioning terminal current location information
Environmental parameter measurement instruction is sent, to indicate that the positioning terminal obtains environmental parameter measured value corresponding with the instruction, Jin Erke
To receive the environmental parameter measured value that the positioning terminal reports.
In the present embodiment, environmental parameter can specifically include ambient brightness and/or air pressure.
As shown in Fig. 2, obtaining the environmental parameter measured value tool of positioning terminal after determining that positioning terminal enters target tunnel
Body may include:
111, if it is determined that positioning terminal enters target tunnel, environment corresponding with the type in the target tunnel is chosen
Parameter.
While driving vehicle reaches certain target tunnel, precise positioning is carried out by position of the GPS to the vehicle of traveling,
The tunnel title for determining the target tunnel that the vehicle of traveling is reached and the specific location in map etc..It is obtained according to GPS
The tunnel title in the target tunnel obtained and the specific location in map, calling are stored in location-server database and are somebody's turn to do
Other corresponding relevant informations of target tunnel, such as the type in target tunnel.The type for identifying the target tunnel is specially ring
The target tunnel of border brightness type or the target tunnel of air-pressure type, also or for ambient brightness and air-pressure type target tunnel.
Illustratively, when user drives vehicle driving a certain tunnel near the domestic village Er Daohe in Hebei province, Laiyuan County, Baoding
When road entrance, precise positioning is carried out by position of the GPS to the vehicle of traveling, can know the vehicle front tunnel name of the traveling
The referred to as specific location etc. of two tunnels Dao He and the tunnel in map.By the tunnel title known and the tunnel on ground
The information such as the specific location in figure are compared with the relevant information for being stored in location-server each tunnel in database, from
And find other relevant informations in the tunnel being stored in location-server database corresponding with the tunnel, it is assumed that through looking into
Discovery is looked for, includes corresponding between each specific location and ambient brightness measured value in the tunnel in other relevant informations in the tunnel
Relationship then illustrates that the tunnel is the target tunnel of ambient brightness type, therefore environmental parameter of the selection environment brightness as the tunnel,
To carry out subsequent operation.
112, based on be configured at the measuring part that matches in the positioning terminal with the selected environmental parameter with
And the sampling interval of setting, obtain the measured value of the environmental parameter under different sampling instants.
It include following at least one with the measuring part that the ambient brightness matches when environmental parameter includes ambient brightness
: light sensor, front camera and rear camera.Light can be configured with simultaneously inside the same positioning terminal
Sensor, front camera and rear camera, can also only configure one of those or it is several.During positioning,
It, can only open configuration, can also be same in a measuring part in positioning terminal when needing to measure ambient brightness
The multiple measuring parts being configured in positioning terminal of Shi Kaiqi.When specifically measuring to ambient brightness, light level is utilized
Device can directly measure ambient brightness, and when being measured using front camera or rear camera to ambient brightness
It needs to capture the image in front of driving vehicle first with front camera or rear camera, and obtained according to capture
Ambient brightness is calculated in image；
When environmental parameter is air pressure, the measuring part to match with the air pressure includes: baroceptor.
Sampling interval refers to the time interval that measuring part twice in succession measures environmental parameter, i.e. double sampling
Time interval.The setting method in the sampling interval can there are many, such as can be by user's sets itself, can also be using silent
Recognize value.
In a specific example, if it is determined that positioning terminal enters target tunnel and determines that the target tunnel is environment
After the target tunnel of brightness type, location-server can send corresponding environmental parameter measurement instruction to positioning terminal, and instruction is matched
The one or more openings being placed in the light sensor in positioning terminal, front camera and rear camera, and according to
The sampling interval of setting continuously acquires the measured value of the environmental parameter under different sampling instants.For example, when between the sampling of setting
It is divided into 1 second, i.e., every 1 second, one-shot measurement is carried out to the ambient brightness in the tunnel.
120, according to the environmental parameter measured value, and, the environmental parameter value in the target tunnel and the target tunnel
Corresponding relationship between the location information in road carries out tunnel placement to the positioning terminal.
In the present embodiment, it is previously stored in the database of location-server in target tunnel and varying environment parameter value
Therefore the location information of corresponding each specific location passes through the environmental parameter measured value for obtaining positioning terminal real-time sampling
It is compared with the corresponding relationship prestored, the purpose for carrying out tunnel placement to positioning terminal can be realized.
The embodiment of the present invention is solved existing by being positioned using the environmental parameter in tunnel to driving vehicle in tunnel
In some location technologies, after vehicle enters tunnel, it can not be asked by GPS satellite positioning system what driving vehicle was positioned
Topic realizes the purpose for helping that user on the move is positioned in tunnel.
Embodiment two
Fig. 3 is a kind of flow chart of tunnel placement method provided by Embodiment 2 of the present invention.The present embodiment is with above-mentioned implementation
It is optimized based on example, when this method is suitable for using ambient brightness as tunnel environment parameter, to the vehicle travelled in tunnel
It is positioned.In the present embodiment, the environmental parameter is specifically optimized for ambient brightness, it will be with the ambient brightness phase
The measuring part matched is optimized for the front camera of positioning terminal；
Correspondingly, will according to the environmental parameter measured value, and, the environmental parameter value in the target tunnel and the mesh
The corresponding relationship between the location information in tunnel is marked, tunnel placement is carried out to the positioning terminal and is specifically optimized are as follows: according to difference
The changing rule of ambient brightness measured value under sampling instant identifies the extreme point in each ambient brightness measured value；According to knowledge
Not Chu the extreme point, update identified extreme point number；Extreme point number has been identified according to described, and, the target
It is fixed to carry out tunnel to the positioning terminal for the corresponding relationship that the extreme value in tunnel is counted between the location information in the target tunnel
Position.
Correspondingly, the method for the present embodiment specifically includes:
310, if it is determined that positioning terminal enters target tunnel, environment corresponding with the type in the target tunnel is chosen
Brightness is as environmental parameter.
320, the sampling interval based on the front camera and setting that are configured in positioning terminal, when obtaining different samplings
Inscribe the measured value of ambient brightness.
330, according to the changing rule of ambient brightness measured value described under different sampling instants, each ambient brightness is identified
Extreme point in measured value.
In order to express easily, it is illustrated referring to positioning principle of the Fig. 4 to the present embodiment.In Fig. 4, X axis coordinate is indicated
Distance of each position away from the tunnel portal in the tunnel, Y-axis indicate each position ambient brightness value in the tunnel, and broken line indicates ideal
Tunnel in corresponding relationship between each specific location and ambient brightness value, stain indicates that the positioning obtained by analogy method is whole
End passes through ambient brightness measured value measured by measuring part.
It is well known that in order to ensure traffic safety, it will usually be separated by specific range in tunnel and be laid with illuminating lamp
Tool, even and if these for illumination lamps and lanterns daytime still can open.Undoubtedly, at any time, the side extended along tunnel
To movement, ambient brightness will appear bright dark the phenomenon that replacing, because close to the region ring of every suit adjacent lamp in tunnel
Border brightness is bigger than the location circumstances brightness among adjacent two sets of lamps and lanterns.As shown in figure 4, if a certain length of tunnel is 50 meters,
And the lamps and lanterns for laying a set of illumination every 10 meters in the tunnel, i.e., apart from 10 meters of tunnel portal, 20 meters, 30 in the tunnel
The lamps and lanterns of a set of illumination are laid at rice and 40 meters of position.Therefore in the tunnel, the distribution situation of ambient brightness such as Fig. 4
Shown in middle polyline.Ambient brightness is maximum near every set lamps and lanterns, and the location circumstances brightness among every two sets of lamps and lanterns lines is most
It is small.Thus, vehicle is from tunnel portal into and through first set lamps and lanterns (vehicle reaches the position in Fig. 4 away from 10 meters of tunnel portal)
Afterwards, ambient brightness measured by positioning terminal can be first gradually reduced, until vehicle reach first specific position (in such as Fig. 4 away from
The position that the distance of tunnel portal is 15 meters) it measures ambient brightness measured value and reaches minimum, as vehicle continues to move ahead, surveys
It obtains ambient brightness measured value to be gradually increased, when vehicle reaches second specific position, (distance in such as Fig. 4 away from tunnel portal is 20
The position of rice) it measures ambient brightness measured value and reaches maximum, as vehicle continues to move ahead to outlet, measured ambient brightness
Can be gradually reduced, until vehicle reach third specific position (distance in such as Fig. 4 away from tunnel portal for 25 meters of position) its
It measures ambient brightness measured value and reaches minimum, repeatedly, until vehicle reaches tunnel exit.Therefore when vehicle driving is in tunnel
When interior, it can be positioned according to the changing rule of its ambient brightness measured value.
Vehicle from tunnel is driven into and after first set lamps and lanterns, surveyed by the ambient brightness that measuring part measures by positioning terminal
Magnitude is integrally in first to reduce to increase afterwards, then reduce and increase again ... ..., then reduces the changing rule increased again.In this process,
Ambient brightness measured value will appear multiple extreme points.As shown in figure 4, being 15 meters, 25 when vehicle reaches the distance away from tunnel portal
When near rice and 35 meters of position, ambient brightness measured value will appear minimum point, when vehicle is reached away from tunnel portal
When distance is near 10 meters, 20 meters, 30 meters and 40 meters, ambient brightness measured value will appear maximum point.
Therefore, before positioning, as long as it is corresponding to contain each extreme point in target tunnel in location-server databases
The location information of position, so that it may according to the number of the identified extreme point of positioning terminal, determine the specific location of positioning terminal.
In the present embodiment, the measured value of the environmental parameter under acquired different sampling instants is compared, from
And judge currently to measure whether ambient brightness measured value is extreme point.Currently whether ambient brightness measured value is measured in specific identification
To co-exist in four kinds of situations when extreme point, it is illustrated below with reference to Fig. 4.Assuming that the sampling interval set is 0.1 second.
Situation one, when at a time, vehicle driving is in tunnel corresponding with Fig. 4 when 17.5 meters of position, and positioning is eventually
Compared with the measured ambient brightness measured value in end ambient brightness measured value measured by its first 0.1 second and latter 0.1 second, discovery exists
Ambient brightness measured value measured by the moment be greater than its first 0.1 second measured by ambient brightness measured value and be less than thereafter
Ambient brightness measured value measured by 0.1 second, this explanation ambient brightness measured value measured by the moment is not extreme point.
Situation two, when at another moment, vehicle driving is in tunnel corresponding with Fig. 4 when 20 meters of position, by should
Ambient brightness measured value measured by moment positioning terminal with its first 0.1 second and it is 0.1 second latter measured by ambient brightness measured value
It compares, discovery ambient brightness measured value measured by the moment is greater than ambient brightness measured by its first 0.1 second and latter 0.1 second
Measured value, this explanation ambient brightness measured value measured by the moment is extreme point.
Situation three, when vehicle driving 22.5 meters of position in tunnel corresponding with Fig. 4, by positioning eventually the moment
Compared with the measured ambient brightness measured value in end ambient brightness measured value measured by its first 0.1 second and latter 0.1 second, discovery exists
Ambient brightness measured value measured by the moment be less than its first 0.1 second measured by ambient brightness measured value and be greater than latter 0.1 second
Measured ambient brightness measured value illustrates that ambient brightness measured value measured by the moment is not extreme point.
Situation four, vehicle driving is in tunnel corresponding with Fig. 4 when 25 meters of position, by by the moment positioning terminal institute
Compared with the ambient brightness measured value measured ambient brightness measured value measured by its first 0.1 second and latter 0.1 second, find at this
It carves measured ambient brightness measured value and is less than ambient brightness measured value measured by its first 0.1 second and latter 0.1 second, when illustrating this
Carving measured ambient brightness measured value is extreme point.
340, according to the extreme point identified, update has identified extreme point number.
In the present embodiment, the number of the extreme point identified is counted, so that it is determined that positioning terminal is from entrance
Identify the number of extreme point altogether to current location is reached in tunnel.
350, extreme point number has been identified according to described, and, extreme value points and the target tunnel in the target tunnel
Corresponding relationship between the location information in road carries out tunnel placement to the positioning terminal.
The corresponding relationship that the extreme value in the target tunnel is counted between the location information in the target tunnel can have more
Kind, for example, the corresponding relationship can for each ambient brightness measured value extreme point occur position with away from tunnel portal (or go out
Mouthful) distance between corresponding relationship, or each ambient brightness measured value extreme point occur position specific warp
Latitude information.Above-mentioned corresponding relationship is also stored in location-server database.
By taking Fig. 4 as an example, when the data of location-server databases storage are each ambient brightness measured value extreme point
The position of appearance at a distance from away from tunnel portal (or outlet) between corresponding relationship, it is assumed that positioning terminal has at a time been known
Other extreme point number be 3, then illustrate positioning terminal arrived third extreme point occur position near, by with the tunnel
Extreme value points in road are compared with the corresponding relationship of the location information in the target tunnel, can determine the position of third extreme point
It sets away from 20 meters of tunnel portal.According to information above by the specific latitude and longitude information of the available positioning terminal of calculating, thus
Realize the purpose positioned to positioning terminal.
When the data of location-server databases storage are the position that each ambient brightness measured value extreme point occurs
Specific latitude and longitude information when, it is assumed that positioning terminal at a time identified extreme point number be 3, then illustrate positioning eventually
End arrived third extreme point appearance position near, by with the tunnel extreme value points and target tunnel location information it
Between corresponding relationship be compared, can directly using the latitude and longitude information of third extreme point as positioning terminal position believe
Breath, to realize the purpose positioned to positioning terminal.
It should be noted that in the database about the corresponding pass in target tunnel between each specific location and ambient brightness
The collecting method of system can use similar method.For example, collector since enter tunnel a moment, Bian Tongji ring
Brightness each extreme point in border is into which extreme point behind tunnel, while measuring the position of extreme point appearance away from tunnel portal
Distance, to obtain the corresponding relationship between the extreme value points in target tunnel and the location information in target tunnel.Further, it adopts
Collection personnel can also be using the method averaged repeatedly be measured, to help user to improve the positioning accuracy of positioning.
The present embodiment is solved existing by being positioned using the ambient brightness in tunnel to the driving vehicle in tunnel
Location technology in, after vehicle enters tunnel, can not be asked by GPS satellite positioning system what driving vehicle was positioned
Topic realizes the purpose for helping that user on the move is positioned in tunnel.
Embodiment three
Fig. 5 is a kind of flow chart for tunnel placement method that the embodiment of the present invention three provides.The present embodiment is with above-mentioned implementation
Optimized based on example, this method is suitable for environmental parameter using air pressure as tunnel, to the vehicle travelled in tunnel into
Row positioning.In the present embodiment, the environmental parameter is optimized for air pressure, the measuring part to match with the air pressure is optimized
Are as follows: baroceptor；
Correspondingly, will according to the environmental parameter measured value, and, the environmental parameter value in the target tunnel and the mesh
The corresponding relationship between the location information in tunnel is marked, tunnel placement is carried out to the positioning terminal and is specifically optimized are as follows: according to difference
Between the atmospheric pressure value of gas pressure measurement and the target tunnel and the location information in the target tunnel under sampling instant
Corresponding relationship carries out tunnel placement to the positioning terminal.
When being positioned to the vehicle travelled in acclive tunnel, in addition to may rely on the lamp laid in tunnel
Tool is outer, and the air pressure that may also rely in tunnel is positioned.Because under normal circumstances, height above sea level is higher, air pressure is lower.Fig. 6 is
The schematic diagram for the tunnel placement method that the embodiment of the present invention three provides.In Fig. 6, X axis coordinate indicates that each position is away from this in the tunnel
The distance of tunnel portal, Y-axis indicate the air pressure of each position in the tunnel, and unit is millimetres of mercury.It can be seen from the figure that at this
Each position corresponds to a specific atmospheric pressure value in tunnel.Therefore, by each specific location in tunnel away from tunnel portal
The distance of (or outlet) is established one-to-one relationship with air pressure at this location and is stored in database profession.To positioning terminal
Only the atmospheric pressure value of the specific location according to locating for positioning terminal can position positioning terminal when being positioned.
The method of the present embodiment specifically includes:
510, if it is determined that positioning terminal enters target tunnel, air pressure corresponding with the type in the target tunnel is chosen
As environmental parameter.
520, the sampling interval based on the baroceptor and setting that are configured in positioning terminal, when obtaining different samplings
Inscribe the measured value of the air pressure.
In the present embodiment, baroceptor is configured inside positioning terminal.When needing to measure air pressure, open
The baroceptor measures the air pressure of positioning terminal present position, to obtain the gas pressure measurement of the position.
In the present embodiment, after determining that positioning terminal enters target tunnel, control is configured in positioning terminal
Baroceptor is opened, and the measurement of the environmental parameter under different sampling instants is continuously acquired according to the sampling interval of setting
Value.For example, that is, every 1 second, carrying out one-shot measurement to the air pressure in the tunnel when the sampling interval set is 1 second.
530, according to the gas pressure measurement under different sampling instants, and, the atmospheric pressure value and the mesh in the target tunnel
The corresponding relationship between the location information in tunnel is marked, tunnel placement is carried out to the positioning terminal.
In the present embodiment, according to the atmospheric pressure value of gas pressure measurement and the target tunnel under different sampling instants
Corresponding relationship between the location information in the target tunnel carries out tunnel placement to the positioning terminal.In conjunction with Fig. 6 to this
Step is further described, for example, when driving vehicle reaches certain specific position in tunnel, through measuring air pressure in the position
Measured value is 759.5 millimetress of mercury, by believing the position of the atmospheric pressure value of the gas pressure measurement and target tunnel and target tunnel
The corresponding relationship of breath is compared, and finds at the position away from 15 meters of tunnel portal, measured by atmospheric pressure value and the positioning device
Gas pressure measurement it is consistent, illustrate that the positioning terminal is located at the position away from 15 meters of tunnel portal, thus realize rely on air pressure pair
The purpose that positioning terminal is positioned.
It should be noted that in the database about the corresponding relationship in target tunnel between each specific location and atmospheric pressure value
Collecting method, similar method can be used.For example, collector since enter the tunnel moment, while in tunnel
The air pressure of each position measures, while measuring to the position away from the distance of tunnel portal, to obtain the gas in target tunnel
Corresponding relationship between pressure value and the location information in target tunnel.Further, collector can also be asked using repeatedly measurement
The method of average value, to help user to improve the precision of positioning.
For the present embodiment by being positioned using the air pressure in tunnel to the driving vehicle in tunnel, it is existing fixed to solve
It is real the problem of can not being positioned by GPS satellite positioning system to driving vehicle after vehicle enters tunnel in the technology of position
The purpose for helping that user on the move is positioned in tunnel is showed.
It, can be optional when target tunnel is the tunnel of ambient brightness and air-pressure type on the basis of the various embodiments described above
Ambient brightness or air pressure are as environmental parameter, to position to positioning terminal, can also first make according to ambient brightness or air pressure
After being positioned respectively to positioning terminal for environmental parameter, two kinds of localization methods positioning result obtained is connected, its company is taken
The middle position of line is conducive to the accuracy for improving positioning as positioning result in this way.
Example IV
Fig. 7 is a kind of structural schematic diagram for tunnel placement device that the embodiment of the present invention four provides, which includes: environment
Parameter acquisition module 710 and tunnel placement module 720.
Wherein, environmental parameter obtains module 710, if entering target tunnel for positioning terminal, obtains the positioning eventually
The environmental parameter measured value at end；
Tunnel placement module 720 is used for according to the environmental parameter measured value, and, the environment ginseng in the target tunnel
Corresponding relationship between numerical value and the location information in the target tunnel carries out tunnel placement to the positioning terminal.
The embodiment of the present invention is solved existing by being positioned using the environmental parameter in tunnel to driving vehicle in tunnel
In some location technologies, after vehicle enters tunnel, it can not be asked by GPS satellite positioning system what driving vehicle was positioned
Topic realizes the purpose for helping that user on the move is positioned in tunnel.
On the basis of the various embodiments described above, the environmental parameter obtains module 710 and may include:
Environmental parameter selection unit is chosen and the target tunnel after if it is determined that positioning terminal enters target tunnel
The corresponding environmental parameter of the type in road；
Environmental parameter measuring unit, for being matched with selected environmental parameter based on being configured in the positioning terminal
Measuring part and setting sampling interval, obtain the measured value of the environmental parameter under different sampling instants.
The environmental parameter can be ambient brightness and/or air pressure.
When the environmental parameter includes ambient brightness；Under the measuring part to match with the ambient brightness may include
State at least one: light sensor, front camera and rear camera.
At this point, tunnel placement module 720 may include:
Extreme point recognition unit, for the changing rule according to ambient brightness measured value under different sampling instants, identification is each
Extreme point in the ambient brightness measured value；
Extreme point updating unit, for according to the extreme point identified, update to have identified extreme point number；
First tunnel placement unit, for having identified extreme point number according to described, and, the extreme value in the target tunnel
Corresponding relationship between points and the location information in the target tunnel carries out tunnel placement to the positioning terminal.
When the environmental parameter includes air pressure；The measuring part to match with the air pressure may include: air pressure sensing
Device.
At this point, the tunnel placement module 720 may include:
Second tunnel placement unit, for according to the gas pressure measurement and the target tunnel under different sampling instants
Atmospheric pressure value and the target tunnel location information between corresponding relationship, to the positioning terminal carry out tunnel placement.
It should be noted that method provided by any embodiment of the invention can be performed in above-mentioned apparatus, has execution method
Corresponding functional module and beneficial effect.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (2)
1. a kind of tunnel placement method characterized by comprising
If positioning terminal enters target tunnel, the environmental parameter measured value of the positioning terminal is obtained；
According to the environmental parameter measured value, and, the position of the environmental parameter value in the target tunnel and the target tunnel
Corresponding relationship between information carries out tunnel placement to the positioning terminal；
If the positioning terminal enters target tunnel, the environmental parameter measured value of the positioning terminal is obtained, comprising:
If it is determined that positioning terminal enters target tunnel, environmental parameter corresponding with the type in the target tunnel is chosen；
Based on being configured at the measuring part and setting to match in the positioning terminal with the selected environmental parameter
Sampling interval obtains the environmental parameter measured value under different sampling instants；
The environmental parameter includes ambient brightness；
Include at least one of following with the measuring part that the ambient brightness matches: light sensor, front camera and
Rear camera；
It is described according to the environmental parameter measured value, and, the environmental parameter value in the target tunnel and the target tunnel
Corresponding relationship between location information carries out tunnel placement to the positioning terminal and specifically includes:
According to the changing rule of ambient brightness measured value under different sampling instants, the pole in each ambient brightness measured value is identified
Value point；
According to the extreme point identified, update has identified extreme point number；
Extreme point number has been identified according to described, and, the position of the extreme value points and the target tunnel in the target tunnel
Corresponding relationship between information carries out tunnel placement to the positioning terminal.
2. a kind of tunnel placement device characterized by comprising
Environmental parameter obtains module and obtains the environmental parameter of the positioning terminal if entering target tunnel for positioning terminal
Measured value；
Tunnel placement module is used for according to the environmental parameter measured value, and, the environmental parameter value in the target tunnel and institute
The corresponding relationship between the location information in target tunnel is stated, tunnel placement is carried out to the positioning terminal；
The environmental parameter obtains module
Environmental parameter selection unit, for if it is determined that positioning terminal enters target tunnel, the class of selection and the target tunnel
The corresponding environmental parameter of type；
Environmental parameter measuring unit, for being matched with the selected environmental parameter based on being configured in the positioning terminal
Measuring part and setting sampling interval, obtain the environmental parameter measured value under different sampling instants；
The environmental parameter includes ambient brightness；
Include at least one of following with the measuring part that the ambient brightness matches: light sensor, front camera and
Rear camera；
The tunnel placement module specifically includes:
Extreme point recognition unit, for the changing rule according to ambient brightness measured value described under different sampling instants, identification is each
Extreme point in the ambient brightness measured value；
Extreme point updating unit, for according to the extreme point identified, update to have identified extreme point number；
First tunnel placement unit, for having identified extreme point number according to described, and, the extreme value points in the target tunnel
Corresponding relationship between the location information in the target tunnel carries out tunnel placement to the positioning terminal.
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| CN108254776A (en) * | 2017-12-25 | 2018-07-06 | 东风汽车集团有限公司 | Tunnel placement system and method based on curb fluorescent reflection and binocular camera |
| CN109029375A (en) * | 2018-07-16 | 2018-12-18 | 银河水滴科技（北京）有限公司 | The method for relocating apparatus and system of vehicle is detected in a kind of tunnel |
| CN109029373A (en) * | 2018-07-16 | 2018-12-18 | 银河水滴科技（北京）有限公司 | The synthesized positioning method and device of vehicle are detected in a kind of tunnel |
| CN109029377A (en) * | 2018-07-16 | 2018-12-18 | 银河水滴科技（北京）有限公司 | It is a kind of using visual analysis to detection car weight positioning square law device and system |
| CN109029376A (en) * | 2018-07-16 | 2018-12-18 | 银河水滴科技（北京）有限公司 | A kind of method for relocating and device detecting vehicle |
| CN111479217B (en) * | 2020-04-17 | 2022-03-04 | 新石器慧通（北京）科技有限公司 | Method and system for positioning unmanned vehicle in tunnel and electronic equipment |
| CN113884067A (en) * | 2021-09-30 | 2022-01-04 | 浙江数智交院科技股份有限公司 | Tunnel positioning method and device, electronic equipment and readable storage medium |
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