CN103791911B - The method of work of the path adaptation of the navigator that accuracy is higher - Google Patents
The method of work of the path adaptation of the navigator that accuracy is higher Download PDFInfo
- Publication number
- CN103791911B CN103791911B CN201410029121.9A CN201410029121A CN103791911B CN 103791911 B CN103791911 B CN 103791911B CN 201410029121 A CN201410029121 A CN 201410029121A CN 103791911 B CN103791911 B CN 103791911B
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- vehicle
- section
- overhead
- navigator
- gas pressure
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000006978 adaptation Effects 0.000 title abstract description 7
- 230000006698 induction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
- G01C21/30—Map- or contour-matching
Abstract
The present invention relates to the method for work of the path adaptation of the higher navigator of a kind of accuracy, including: a section will be sailed into when the CPU element of navigator records the vehicle as navigator carrier, when this section includes the most parallel overhead section and overhead descending section, CPU element is detected by vehicle window and control unit controls all vehicle windows of this vehicle and completely closes, and then detects this vehicle and sails the speed during this section and the change of described vehicle chamber internal gas pressure into；If described speed is unchanged, and car internal gas pressure diminishes, then judge that described vehicle is currently on overhead section；If described speed is unchanged, and car internal gas pressure does not diminishes, then judge that described vehicle is currently on overhead descending section；In the map data base being connected with CPU element, storage has the attribute in each section, and this attribute includes whether corresponding section includes the most parallel overhead section and the information in overhead descending section；The described curve used is corresponding with the humiture parameter of Current vehicle indoor.
Description
The application is divisional application, the application number of original application: 201210112405.5, invention and created name: navigator carries out the method for work of path adaptation according to interior air pressure changes of vehicle, the applying date: 2012-4-17.
Technical field
The present invention relates to the technical field of the method for work of navigator, a kind of navigator carries out the method for work of path adaptation according to interior air pressure changes of vehicle.
Background technology
Existing navigator is during Circuit Matching, and the elevation information generally requiring acquisition carrier carries out path adaptation；In particular for urban elevated road, need to by elevation information judge Current vehicle on overpass, or on the road of overhead lower section.
Chinese patent literature CN101666643 discloses a kind of altitude measuring device processed based on barometric surveying and satellite navigation and location system data.Air pressure measures assembly and calculates pressure altitude according to air pressure, satellite navigation and location system receiver calculates satellite navigation and location system height and judges whether satellite navigation and location system interrupts and hop, when not occurring to interrupt with hop, by satellite navigation and location system height correction pressure altitude；When satellite navigation and location system height does not updates, or when the interruption of satellite navigation and location system height or hop, final height value is equal to pressure altitude.
Chinese patent literature CN101000244 discloses a kind of high integration MIMU/GPS/ micro magnetic compass/barometertic altimeter integrated navigation system, is made up of the integrated navigation computer of MIMU subsystem, GPS subsystem, micro magnetic compass subsystem, barometertic altimeter subsystem and embedding navigation algorithm.MIMU subsystem, GPS subsystem, micro magnetic compass subsystem, the data of barometertic altimeter subsystem output are carried out processing and information fusion by integrated navigation computer, the output position of carrier, speed and attitude information.
Being in place of above-mentioned the deficiencies in the prior art: on the one hand, using gps signal computed altitude, often error is relatively big, because the precision of civilian gps signal is the most relatively low, it is impossible to accurately draw the height of Current vehicle.On the other hand, use the air pressure of baroceptor detection vehicle position, the most inaccurate.Vehicle respectively static, travel time, act on the pressure gap on baroceptor relatively big, cause surveyed result difference the biggest.During carrying out real-time navigation, vehicle is typically in different speed states, and under same air pressure conditions, the result measured by baroceptor has larger difference, additionally, the output of baroceptor is also affected by temperature and humidity conditions.The most how to obtain air pressure testing result accurately, provide reference accurately with navigation instrument, be the technical barrier of this area.
The door and window seal of existing vehicle, especially car is preferable, but the panel of these vehicles is provided with air inlet, and the air inlet pipeline being connected with these air inlets is typically located at vehicle front side；In vehicle travel process, the air pressure of vehicle front side is the highest, and this air pressure is accelerated along with speed and increased.This causes car internal gas pressure with speed generation respective change.Under the conditions of same speed, the height of vehicle location, also can affect car internal gas pressure.
Summary of the invention
The technical problem to be solved in the present invention is to provide the higher navigator of a kind of accuracy and carries out the method for work of path adaptation according to interior air pressure changes of vehicle.
For solving above-mentioned technical problem, the method of work of the navigator that the present invention provides includes: will sail a section into when the CPU element of navigator records the vehicle as navigator carrier, when this section includes the most parallel overhead section and overhead descending section, CPU element is detected by vehicle window and control unit controls all vehicle windows of this vehicle and completely closes, and then detects this vehicle and sails the speed during this section and the change of described vehicle chamber internal gas pressure into；If described speed is unchanged, and car internal gas pressure diminishes, then judge that described vehicle is currently on overhead section；If described speed is unchanged, and car internal gas pressure does not diminishes, then judge that described vehicle is currently on overhead descending section.
If described speed accelerates, then current car internal gas pressure is compared with car internal gas pressure curve by CPU element with the speed being pre-stored in program data base, if the car internal gas pressure under current vehicle speed is less than atmospheric pressure value corresponding in described curve, then judge that described vehicle is currently on overhead section；Otherwise, it is judged that described vehicle is currently on overhead descending section.
If described speed is slack-off, then current car internal gas pressure is compared with car internal gas pressure curve by CPU element with the speed being pre-stored in program data base, if the car internal gas pressure under current vehicle speed is less than atmospheric pressure value corresponding in described curve, then judge that described vehicle is currently on overhead section；Otherwise, it is judged that described vehicle is currently on overhead descending section.
In the map data base being connected with CPU element, storage has the attribute in each section, and this attribute includes whether corresponding section includes the most parallel overhead section and the information in overhead descending section.
The described curve used is corresponding with the humiture parameter of Current vehicle indoor.As preferred scheme, the described curve of employing is also the most corresponding with Current vehicle type, and the vehicle window of this vehicle, car door airtight performance are preferable, does not i.e. leak out when speed is for not higher than 80km/h.Described speed and described curve are all vehicle windows, the car door of the described vehicle of respective type to be completely closed simultaneously, and close and draw by measuring on level road under conditions of car outer air circulatory function and Che Nei air-conditioning, and the described speed recorded has multiple with described curve, corresponding from different humiture parameters respectively.
Described overhead descending section refers to immediately below overhead section or the section of side, lower section.
The technique effect that the present invention has: the road matching method of the navigator of the present invention, is mainly used in solving when vehicle initially enters urban elevated road, it is judged that the vehicle whether technical problem on overpass.The present invention is during interior air pressure changes of vehicle, in conjunction with the speed change impact on car internal gas pressure, it is judged that whether described vehicle is current on overhead section；Relative to prior art, it has accuracy and the higher feature of reliability.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below according to specific embodiment and combine accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of the navigator of the present invention；
Fig. 2 is the main flow block diagram of the method for work of the navigator of the present invention；
Fig. 3 is Fig. 2
In the sub-process block diagram of method of work of described navigator.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail:
Such as Fig. 1, the navigator of the present embodiment includes: CPU element, the map of the band touch screen being connected with this CPU element generate and display unit, the voice-output unit being connected with this CPU element, the baroceptor being connected with this CPU element, the vehicle speed measurement module being connected with this CPU element, the GPS unit being connected with this CPU element, the program data base being connected with this CPU element, the Temperature Humidity Sensor being connected with this CPU element and the map data base being connected with this CPU element.In map data base, storage has road routing information, road routing information to include the attribute in each section, and this attribute includes whether corresponding section includes the most parallel overhead section and the information in overhead descending section.
Vehicle speed measurement module includes: the multiple magnetic induction pulses enumerators being located on vehicle hub；Described CPU element is connected with this magnetic induction pulses enumerator, for calculating speed according to the umber of pulse in the unit interval.Baroceptor includes: air pressure induction apparatus and the output according to this air pressure induction apparatus calculate the processor of height above sea level.This processor is connected with described CPU element.
The road matching method of described navigator, comprising: a section will be sailed into when the CPU element of navigator records the vehicle as navigator carrier, when this section includes the most parallel overhead section and overhead descending section, CPU element is detected by vehicle window and control unit controls all vehicle windows of this vehicle and completely closes, and then detects this vehicle and sails the speed during this section and the change of described vehicle chamber internal gas pressure into；If described speed is unchanged, and car internal gas pressure diminishes, then judge described vehicle currently on overhead section, then current guidance path is matched on this overhead section by CPU element；If described speed is unchanged, and car internal gas pressure does not diminishes, then judge described vehicle currently on overhead descending section, then current guidance path is matched on this overhead descending section by CPU element.
If described speed accelerates, then current car internal gas pressure is compared with car internal gas pressure curve by CPU element with the speed being pre-stored in program data base, if the car internal gas pressure under current vehicle speed is less than atmospheric pressure value corresponding in described curve, then judge described vehicle currently on overhead section, then current guidance path is matched on this overhead section by CPU element；Otherwise, it is judged that described vehicle is currently on overhead descending section, and then current guidance path is matched on this overhead descending section by CPU element.
If described speed is slack-off, then current car internal gas pressure is compared with car internal gas pressure curve by CPU element with the speed being pre-stored in program data base, if the car internal gas pressure under current vehicle speed is less than atmospheric pressure value corresponding in described curve, then judge described vehicle currently on overhead section, then current guidance path is matched on this overhead section by CPU element；Otherwise, it is judged that described vehicle is currently on overhead descending section, and then current guidance path is matched on this overhead descending section by CPU element.
In the map data base being connected with CPU element, storage has the attribute in each section, and this attribute includes whether corresponding section includes the most parallel overhead section and the information in overhead descending section.
The air inlet pipeline that existing and in Car air inlet is connected typically is located at vehicle front side, and this causes car internal gas pressure with speed generation respective change.Described air inlet pipeline is located to the vehicle of other positions of vehicle (such as vehicle end face or rear end face etc.), one trachea can be set at vehicle front side and be passed through in car.
Obviously, above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these spirit belonging to the present invention are extended out obvious change or variation still in protection scope of the present invention among.
Claims (1)
1. the method for work of a navigator, it is characterised in that including:
A section will be sailed into when the CPU unit of navigator records the vehicle as navigator carrier, when this section includes the most parallel overhead section and overhead descending section, CPU unit is detected by vehicle window and control unit controls all vehicle windows of this vehicle and completely closes, and then detects this vehicle and sails the speed during this section and the change of described vehicle chamber internal gas pressure into；
If described speed is unchanged, and car internal gas pressure diminishes, then judge that described vehicle is currently on overhead section；
If described speed is unchanged, and car internal gas pressure does not diminishes, then judge that described vehicle is currently on overhead descending section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410029121.9A CN103791911B (en) | 2012-04-17 | 2012-04-17 | The method of work of the path adaptation of the navigator that accuracy is higher |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112405.5A CN102636178B (en) | 2012-04-17 | 2012-04-17 | Operating method of navigator for carrying out road matching according to interior air pressure changes of vehicle |
| CN201410029121.9A CN103791911B (en) | 2012-04-17 | 2012-04-17 | The method of work of the path adaptation of the navigator that accuracy is higher |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210112405.5A Division CN102636178B (en) | 2012-04-17 | 2012-04-17 | Operating method of navigator for carrying out road matching according to interior air pressure changes of vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103791911A CN103791911A (en) | 2014-05-14 |
| CN103791911B true CN103791911B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410029121.9A Expired - Fee Related CN103791911B (en) | 2012-04-17 | 2012-04-17 | The method of work of the path adaptation of the navigator that accuracy is higher |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107764274B (en) * | 2016-08-17 | 2021-03-02 | 厦门雅迅网络股份有限公司 | Method for judging whether vehicle runs on elevated road or not |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4217555A1 (en) * | 1992-05-27 | 1993-12-02 | Bosch Gmbh Robert | Map-based location and navigation system for motor vehicle - corrects distance covered for tyre wear and pressure errors using known positions of detected bridges and tunnels |
| JP2008175716A (en) * | 2007-01-19 | 2008-07-31 | Xanavi Informatics Corp | Navigation system for specifying one's own vehicle position based on altitude variation, and its method |
| CN101975961A (en) * | 2010-09-29 | 2011-02-16 | 惠州Tcl移动通信有限公司 | Mobile terminal with GPS (Global Positioning System) navigation function |
| CN102012234A (en) * | 2009-09-04 | 2011-04-13 | 陈宗炜 | Vehicle navigation device |
| CN102095420A (en) * | 2009-12-14 | 2011-06-15 | 索尼公司 | Height output device, height output method, and program |
-
2012
- 2012-04-17 CN CN201410029121.9A patent/CN103791911B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4217555A1 (en) * | 1992-05-27 | 1993-12-02 | Bosch Gmbh Robert | Map-based location and navigation system for motor vehicle - corrects distance covered for tyre wear and pressure errors using known positions of detected bridges and tunnels |
| JP2008175716A (en) * | 2007-01-19 | 2008-07-31 | Xanavi Informatics Corp | Navigation system for specifying one's own vehicle position based on altitude variation, and its method |
| CN102012234A (en) * | 2009-09-04 | 2011-04-13 | 陈宗炜 | Vehicle navigation device |
| CN102095420A (en) * | 2009-12-14 | 2011-06-15 | 索尼公司 | Height output device, height output method, and program |
| CN101975961A (en) * | 2010-09-29 | 2011-02-16 | 惠州Tcl移动通信有限公司 | Mobile terminal with GPS (Global Positioning System) navigation function |
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| CN103791911A (en) | 2014-05-14 |
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Granted publication date: 20160831 |