CN102636178B - Operating method of navigator for carrying out road matching according to interior air pressure changes of vehicle - Google Patents
Operating method of navigator for carrying out road matching according to interior air pressure changes of vehicle Download PDFInfo
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- CN102636178B CN102636178B CN201210112405.5A CN201210112405A CN102636178B CN 102636178 B CN102636178 B CN 102636178B CN 201210112405 A CN201210112405 A CN 201210112405A CN 102636178 B CN102636178 B CN 102636178B
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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
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
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- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Navigation (AREA)
Abstract
The invention relates to a high-accuracy operating method of a navigator for carrying out road matching according to the interior air pressure changes of a vehicle, which comprises the following steps that: when a CPU (central processing unit) of the navigator measures that a vehicle as the carrier of the navigator is about to be driven into a road section, and the road section comprises an elevated road section and an elevated down road section which are arranged in an up-and-down parallel mode, the CPU controls all windows of the vehicle to be completely closed through a window detection and control unit; then, the CPU detects the changes in vehicle speed and interior air pressure of the vehicle in the process that the vehicle is driven into the road section; if the vehicle speed is not changed, and the interior pressure is reduced, the CPU judges that the vehicle is currently in the elevated road section; and if the vehicle speed is not changed, and the interior air pressure is not reduced, the CPU judges that the vehicle is currently in the elevated down road section.
Description
Technical field
The present invention relates to the technical field of the method for work of navigating instrument, specifically a kind of navigating instrument changes the method for work of carrying out road coupling according to car internal gas pressure.
Background technology
Existing navigating instrument, in Circuit Matching process, often needs the elevation information that obtains carrier to carry out road coupling; Especially for urban elevated road, need judge when vehicle in front is on overpass by elevation information, or on the road below overhead.
Chinese patent literature CN101666643 discloses a kind of altitude measuring device based on barometric surveying and satellite navigation and location system data processing.Air pressure is measured assembly and is calculated barometer 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, in the time not there is not interruption and hop, by satellite navigation and location system height correction barometer altitude; In the time that satellite navigation and location system height does not upgrade, or satellite navigation and location system height interrupts or when hop, final height value equals barometer altitude.
Chinese patent literature CN101000244 discloses a kind of high integration MIMU/GPS/ micro magnetic compass/barometric altimeter integrated navigation system, is made up of the integrated navigation computer of MIMU subsystem, GPS subsystem, micro magnetic compass subsystem, barometric altimeter subsystem and embedding navigation algorithm.Integrated navigation computer is processed the data of MIMU subsystem, GPS subsystem, micro magnetic compass subsystem, the output of barometric altimeter subsystem and information fusion, position, speed and the attitude information of output carrier.
Above-mentioned the deficiencies in the prior art part is: on the one hand, adopt gps signal computed altitude, often error is larger, because the precision of civilian gps signal is generally lower, can not accurately draw the height when vehicle in front.On the other hand, adopt the air pressure of baroceptor detection vehicle position, often also inaccurate.Vehicle respectively static, while travelling, act on pressure gap on baroceptor larger, cause surveyed result difference also larger.Carrying out in real-time navigation process, vehicle is generally in different speed of a motor vehicle states, and under same air pressure conditions, the measured result of baroceptor has larger difference, and in addition, the output of baroceptor is also subject to the impact of temperature and humidity conditions.Therefore how obtaining air pressure testing result accurately, provide reference accurately with navigation instrument, is the technical barrier of this area.
The door and window leakproofness of existing vehicle, especially car is better, but the control panel of these vehicles is provided with air inlet, and the air inlet pipeline being connected with these air inlets is generally located at vehicle front side; In Vehicle Driving Cycle process, the air pressure of vehicle front side is often higher, and this air pressure is along with the speed of a motor vehicle is accelerated and increases.This causes car internal gas pressure with speed of a motor vehicle generation respective change.Under same speed of a motor vehicle condition, 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 navigating instrument that a kind of accuracy is higher and changes the method for work of carrying out road coupling according to car internal gas pressure.
For solving the problems of the technologies described above, the method of work of navigating instrument provided by the invention comprises: be about to sail into a section when the CPU element of navigating instrument records as the vehicle of navigating instrument carrier, when this section comprises upper and lower parallel overhead section and overhead descending section, CPU element detects by vehicle window and all vehicle windows of this vehicle of control module control are closed completely, then detects the speed of a motor vehicle in the process that this vehicle sails this section into and the variation of described vehicle chamber internal gas pressure; If the described speed of a motor vehicle is unchanged, and car internal gas pressure diminishes, judge that described vehicle is current on overhead section; If the described speed of a motor vehicle is unchanged, and car internal gas pressure does not diminish, judge that described vehicle is current on overhead descending section.
If the described speed of a motor vehicle accelerates, CPU element is compared current car internal gas pressure and the speed of a motor vehicle and the car internal gas pressure curve that are 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, judge that described vehicle is current on overhead section; Otherwise, judge that described vehicle is current on overhead descending section.
If the described speed of a motor vehicle is slack-off, CPU element is compared current car internal gas pressure and the speed of a motor vehicle and the car internal gas pressure curve that are 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, judge that described vehicle is current on overhead section; Otherwise, judge that described vehicle is current on overhead descending section.
In the map data base being connected with CPU element, store the attribute in each section, this attribute comprises whether corresponding section comprises upper and lower parallel overhead section and the information in overhead descending section.
The described curve adopting is corresponding with the humiture parameter in current vehicle chamber.As preferred scheme, the described curve of employing is simultaneously also corresponding with current type of vehicle, and vehicle window, the car door airtight performance of this vehicle are better, does not leak out when not higher than 80km/h in the speed of a motor vehicle.The described speed of a motor vehicle and described curve are that all vehicle windows, the car door of the described vehicle of respective type are being closed completely simultaneously, and close under the condition of car outer air circulatory function and Che Nei air-conditioning by measuring on level road, and the described speed of a motor vehicle recording and described curve have multiple, corresponding from different humiture parameters respectively.
Described overhead descending section refers under overhead section or the section of below one side.
The technique effect that the present invention has: the road matching method of navigating instrument of the present invention, be mainly used in solving in the time that vehicle starts to enter urban elevated road, judge the whether technical matters on overpass of vehicle.The present invention, in car internal gas pressure change procedure, changes the impact on car internal gas pressure in conjunction with the speed of a motor vehicle, judges that described vehicle is current whether on overhead section; With respect to prior art, it has accuracy and the higher feature of reliability.
Brief description of the drawings
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of navigating instrument of the present invention;
Fig. 2 is the main flow block diagram of the method for work of navigating instrument of the present invention;
Fig. 3 is the sub-process block diagram of the method for work of the described navigating instrument in Fig. 2.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As Fig. 1, the navigating instrument of the present embodiment comprises: CPU element, the map generation with touch-screen being connected with this CPU element 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 unit 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, store road routing information, road path packets of information is drawn together the attribute in each section, and this attribute comprises whether corresponding section comprises upper and lower parallel overhead section and the information in overhead descending section.
Vehicle speed measurement unit comprises: be located at the multiple magnetic induction pulses counters on vehicle hub; Described CPU element is connected with this magnetic induction pulses counter, for calculating the speed of a motor vehicle according to the umber of pulse in the unit interval.Baroceptor comprises: air pressure inductor and the processor according to the output calculating sea level elevation of this air pressure inductor.This processor is connected with described CPU element.
The road matching method of described navigating instrument, it comprises: be about to sail into a section when the CPU element of navigating instrument records as the vehicle of navigating instrument carrier, when this section comprises upper and lower parallel overhead section and overhead descending section, CPU element detects by vehicle window and all vehicle windows of this vehicle of control module control are closed completely, then detects the speed of a motor vehicle in the process that this vehicle sails this section into and the variation of described vehicle chamber internal gas pressure; If the described speed of a motor vehicle is unchanged, and car internal gas pressure diminishes, judge that described vehicle is current on overhead section, then CPU element is matched to current guidance path on this overhead section; If the described speed of a motor vehicle is unchanged, and car internal gas pressure does not diminish, judge that described vehicle is current on overhead descending section, then CPU element is matched to current guidance path on this overhead descending section.
If the described speed of a motor vehicle accelerates, CPU element is compared current car internal gas pressure and the speed of a motor vehicle and the car internal gas pressure curve that are 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, judge that described vehicle is current on overhead section, then CPU element is matched to current guidance path on this overhead section; Otherwise, judge that described vehicle is current on overhead descending section, then CPU element is matched to current guidance path on this overhead descending section.
If the described speed of a motor vehicle is slack-off, CPU element is compared current car internal gas pressure and the speed of a motor vehicle and the car internal gas pressure curve that are 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, judge that described vehicle is current on overhead section, then CPU element is matched to current guidance path on this overhead section; Otherwise, judge that described vehicle is current on overhead descending section, then CPU element is matched to current guidance path on this overhead descending section.
In the map data base being connected with CPU element, store the attribute in each section, this attribute comprises whether corresponding section comprises upper and lower parallel overhead section and the information in overhead descending section.
The existing air inlet pipeline being connected with the air inlet in Car is generally located at vehicle front side, and this causes car internal gas pressure with speed of a motor vehicle generation respective change.Other positions of vehicle (as vehicle end face or the rear end face etc.) of vehicle be located at to(for) described air inlet pipeline, can arrange a tracheae at vehicle front side and pass in car.
Obviously, above-described embodiment is only for example of the present invention is clearly described, 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 giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.
Claims (1)
1. a method of work for navigating instrument, is characterized in that comprising:
When recording as the vehicle of navigating instrument carrier, the CPU element of navigating instrument is about to sail into a section, when this section comprises upper and lower parallel overhead section and overhead descending section, CPU element detects by vehicle window and all vehicle windows of this vehicle of control module control are closed completely, then detects the speed of a motor vehicle in the process that this vehicle sails this section into and the variation of described vehicle chamber internal gas pressure;
If the described speed of a motor vehicle is unchanged, and car internal gas pressure diminishes, judge that described vehicle is current on overhead section;
If the described speed of a motor vehicle is unchanged, and car internal gas pressure does not diminish, judge that described vehicle is current on overhead descending section;
In the map data base being connected with CPU element, store the attribute in each section, this attribute comprises whether corresponding section comprises upper and lower parallel overhead section and the information in overhead descending section.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551817.8A CN104280043B (en) | 2012-04-17 | 2012-04-17 | A kind of method of work of the higher navigator of accuracy |
| 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 |
| CN201410551850.0A CN104280044B (en) | 2012-04-17 | 2012-04-17 | Road matching method for navigating instrument |
| 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 |
| CN201410029013.1A CN103791910B (en) | 2012-04-17 | 2012-04-17 | Navigating instrument carries out the method for work of path adaptation according to the change of car internal gas pressure |
Applications Claiming Priority (1)
| 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 |
Related Child Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410029079.0A Division CN103791909B (en) | 2012-04-17 | 2012-04-17 | A kind of method of work of navigator |
| CN201410551817.8A Division CN104280043B (en) | 2012-04-17 | 2012-04-17 | A kind of method of work of the higher navigator of accuracy |
| CN201410551850.0A Division CN104280044B (en) | 2012-04-17 | 2012-04-17 | Road matching method for navigating instrument |
| CN201410029121.9A Division CN103791911B (en) | 2012-04-17 | 2012-04-17 | The method of work of the path adaptation of the navigator that accuracy is higher |
| CN201410029013.1A Division CN103791910B (en) | 2012-04-17 | 2012-04-17 | Navigating instrument carries out the method for work of path adaptation according to the change of car internal gas pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102636178A CN102636178A (en) | 2012-08-15 |
| CN102636178B true CN102636178B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210112405.5A Active 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 |
| CN201410029013.1A Expired - Fee Related CN103791910B (en) | 2012-04-17 | 2012-04-17 | Navigating instrument carries out the method for work of path adaptation according to the change of car internal gas pressure |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410029013.1A Expired - Fee Related CN103791910B (en) | 2012-04-17 | 2012-04-17 | Navigating instrument carries out the method for work of path adaptation according to the change of car internal gas pressure |
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| Country | Link |
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| CN (2) | CN102636178B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335655A (en) * | 2013-05-29 | 2013-10-02 | 周眉 | Navigator and navigation method |
| CN109246305B (en) * | 2018-09-19 | 2021-06-11 | 维沃移动通信有限公司 | Navigation processing method of navigation equipment, navigation equipment and mobile terminal |
| CN111210460B (en) * | 2018-11-21 | 2023-05-02 | 杭州海康威视系统技术有限公司 | Method and device for matching camera to road section, electronic equipment and storage medium |
| CN111366164B (en) | 2018-12-26 | 2023-12-29 | 华为技术有限公司 | Positioning method and electronic equipment |
| JP7276096B2 (en) * | 2019-11-22 | 2023-05-18 | トヨタ自動車株式会社 | Information processing device, information processing method, and system |
| CN112815950B (en) * | 2020-12-31 | 2022-05-17 | 东风汽车集团有限公司 | Overhead or off-overhead navigation discrimination method based on comprehensive vehicle information |
Citations (4)
| 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 |
-
2012
- 2012-04-17 CN CN201210112405.5A patent/CN102636178B/en active Active
- 2012-04-17 CN CN201410029013.1A patent/CN103791910B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103791910B (en) | 2016-04-13 |
| CN102636178A (en) | 2012-08-15 |
| CN103791910A (en) | 2014-05-14 |
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