CN101995236B - System and method for correcting reference value of pressure conversion altitude - Google Patents
System and method for correcting reference value of pressure conversion altitude Download PDFInfo
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- CN101995236B CN101995236B CN 200910306002 CN200910306002A CN101995236B CN 101995236 B CN101995236 B CN 101995236B CN 200910306002 CN200910306002 CN 200910306002 CN 200910306002 A CN200910306002 A CN 200910306002A CN 101995236 B CN101995236 B CN 101995236B
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Abstract
The invention relates to a system and method for correcting the reference value of pressure conversion altitude. The system is used in a navigational aid and comprises a storage unit, a judgment unit, a sensing unit and a computing unit, the storage unit is used for storing contour line geographic information; the judgment unit is used for judging whether the geographic position information positioned by the navigational aid is on the contour lines; the sensing unit is used for measuring the atmospheric pressure around the navigational aid and obtaining an atmospheric pressure value; and the computing unit is used for computing a reference value according to the contour line information and the atmospheric pressure value, and carrying out conversion computation among the contour line information, atmospheric pressure value and reference value. By using the system and method, a user does not need to mind the problem of setting of the reference value, and the GPS device can automatically correct the conversion reference value of the pressure altitude at any time and enable the altimeter to always keep high measurement accuracy, thereby saving trouble for the user and facilitating applications of the user.
Description
[technical field]
The invention relates to that a kind of calibrating (base measuring) pressure turns the system and method for the reference value of height, particularly turn the system and method for the reference value of height relevant for a kind of automatically calibrating pressure.
[background technology]
Present outdoor GPS equipment has the function that height indicator is provided mostly; its principle is the atmospheric pressure that first working pressure inductor measures context; relend by this force value and convert on-site height value to; in the process of this conversion; the benchmark control value that needs a conversion; usually use the atmospheric pressure value on sea level and make this benchmark; but the atmospheric pressure value on sea level is not a fixed number; it can be with climate change; make the no small change of relative amplitude; cause producing significantly deviation with the height that pressure is extrapolated; in order to address this problem; the GPS equipment that measures height with pressure inductor that is equipped with is arranged at present; before each this height-measuring function of use; the capital requires user's input sea-level atmosphere force value at that time, so not only causes repeating outside the input puzzlement of user, and how to obtain real-time sea-level atmosphere force value and also become a large problem.
In view of this, the present invention proposes the system and method that a kind of calibrating (base measuring) pressure turns the reference value of height, the system and method that turns the reference value of height by this calibrating (base measuring) pressure can allow the user not go to manage the problem that reference value is set fully, GPS equipment can be calibrated the conversion reference value of this pressure altitude at any time automatically, and make altitude gauge forever possess the accuracy of measurement of certain degree, so can remove all troubles of user from, bring the user unlimited convenience.
[summary of the invention]
The purpose of this invention is to provide the system and method that a kind of calibrating (base measuring) pressure turns the reference value of height, before each use height-measuring function, all can require the user to input the problem of sea-level atmosphere force value at that time to solve existing GPS equipment.
According to purpose of the present invention, the system that a kind of calibrating (base measuring) pressure turns the reference value of height is proposed, it is applied in the navigator, and this system comprises:
Storage unit, it is used for storage one level line geography information;
Judging unit, it is used for judging that whether the geographical location information of navigator location is at level line;
Sensing unit, it is used for measuring the atmospheric pressure of above-mentioned navigator periphery, and obtains an atmospheric value;
Computing unit, it calculates a reference value according to contour information and atmospheric value, and the conversion of carrying out between the three is calculated.
According to purpose of the present invention, the method that a kind of calibrating (base measuring) pressure turns the reference value of height is proposed again, it is applied in the said system, and the method step comprises:
(1) navigator is located an initial position, if this initial position then enters step (2) on level line, if this initial position does not enter step (7) at level line;
(2) computing unit obtains elevation information and the atmospheric value on the level line;
(3) calculate a reference value;
(4) navigator continues location one current location, if this current location does not then enter step (5) on next level line, if this current location then enters step (6) on next level line;
(5) computing unit calculates and obtains a height value according to atmospheric value and reference value obtained above that sensing unit measures, finishes;
(6) navigator directly obtains the height value on the level line, and the reference value of this current location of automatic calibration, returns simultaneously step (4);
(7) calculate up and down two isocontour relative positions of this initial position, then the height value of initial position extrapolated in summary, and sensing unit measures and obtains an atmospheric value simultaneously;
(8) computing unit calculates a reference value according to above-mentioned height value and above-mentioned atmospheric value, then enters step (4).
Especially, computing unit recycles the height value that interpolation calculation goes out initial position according to the relative position that obtains in the above-mentioned steps (7).
Compared to prior art, the system and method that calibrating (base measuring) pressure of the present invention turns the reference value of height can allow the user not go to manage the problem that reference value is set fully, navigator can be calibrated the conversion reference value of this pressure altitude at any time automatically, and make altitude gauge forever possess the accuracy of measurement of certain degree, so can remove all troubles of user from, bring the user unlimited convenience.
For purpose of the present invention, structural attitude and function thereof are had further understanding, hereby cooperate accompanying drawing to be described in detail as follows:
[description of drawings]
Fig. 1 illustrates the system block diagrams that calibrating (base measuring) pressure of the present invention turns the reference value of height.
Fig. 2 illustrates the flow chart of steps that calibrating (base measuring) pressure of the present invention turns the method for reference value highly.
[embodiment]
As shown in Figure 1, it turns the system block diagrams of the reference value of height for calibrating (base measuring) pressure of the present invention.
Calibrating (base measuring) pressure of the present invention turns the system of the reference value of height, and it is applied in the navigator, and this system comprises:
Storage unit 10, it is used for storage one level line geography information;
Judging unit 11, it is used for judging that whether the geographical location information of navigator location is at level line;
Sensing unit 12, it is used for measuring the atmospheric pressure of above-mentioned navigator periphery, and obtains an atmospheric value;
Computing unit 13, it calculates a reference value according to contour information and atmospheric value, and the conversion of carrying out between the three is calculated.
As shown in Figure 2, a kind of calibrating (base measuring) pressure turns the method for the reference value of height, and it is applied in the said system, and the method step comprises:
Step 201: above-mentioned navigator begins to locate an initial position, judging unit 11 judges that this initial position is whether on level line, if this initial position on level line then for "Yes" enters step 202, if this initial position does not then enter step 207 for "No" on level line;
Step 202: computing unit 13 obtains a height value and an atmospheric value from storage unit 10 and sensing unit 12 respectively;
Step 203: computing unit 13 calculates a reference value according to the atmospheric value of the height value on the above-mentioned level line and sensing unit 12 measurements;
Step 204: navigator continues location one current location, judging unit 11 is judged this current location whether on next level line, if if this current location does not then enter step 206 for "Yes" then entering this current location of step 205 on next level line for "No" on next level line;
Step 205: computing unit 13 calculates and obtains a height value according to atmospheric value and the reference value in the step 203 obtained above that sensing unit 12 measures, finishes;
Step 206: navigator directly obtains the height value on the level line, and the reference value of this current location of automatic calibration, returns simultaneously step 204;
Step 207: computing unit 13 calculates up and down two isocontour relative positions of this initial position, and (interpolation method is process or the method that known discrete data is asked unknown data of passing through in the art of mathematics numerical analysis then to use interpolation method.) summary extrapolates the height value of initial position, sensing unit 12 measures and obtains an atmospheric value simultaneously;
Step 208: computing unit 13 calculates a reference value according to above-mentioned height value and above-mentioned atmospheric value, then enters step 204.
Claims (2)
1. a calibrating (base measuring) pressure turns the method for the reference value of height, it is characterized in that the method step comprises:
(1) navigator is located an initial position, if this initial position then enters step (2) on level line, if this initial position does not enter step (7) at level line;
(2) computing unit obtains elevation information and the atmospheric value on the level line;
(3) calculate a reference value;
(4) navigator continues location one current location, if this current location does not then enter step (5) on next level line, if this current location then enters step (6) on next level line;
(5) computing unit calculates and obtains a height value according to atmospheric value and reference value obtained above that sensing unit measures, finishes;
(6) navigator directly obtains the height value on the level line, and the reference value of this current location of automatic calibration, returns simultaneously step (4);
(7) calculate up and down two isocontour relative positions of this initial position, then the height value of initial position extrapolated in summary, and sensing unit measures and obtains an atmospheric value simultaneously;
(8) computing unit calculates a reference value according to above-mentioned height value and above-mentioned atmospheric value, then enters step (4).
2. calibrating (base measuring) pressure as claimed in claim 1 turns the method for the reference value of height, it is characterized in that, computing unit goes out the height value of initial position in the above-mentioned steps (7) according to the relative position recycling interpolation calculation that obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910306002 CN101995236B (en) | 2009-08-25 | 2009-08-25 | System and method for correcting reference value of pressure conversion altitude |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910306002 CN101995236B (en) | 2009-08-25 | 2009-08-25 | System and method for correcting reference value of pressure conversion altitude |
Publications (2)
| Publication Number | Publication Date |
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| CN101995236A CN101995236A (en) | 2011-03-30 |
| CN101995236B true CN101995236B (en) | 2013-01-09 |
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| CN 200910306002 Expired - Fee Related CN101995236B (en) | 2009-08-25 | 2009-08-25 | System and method for correcting reference value of pressure conversion altitude |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11761765B2 (en) | 2016-09-09 | 2023-09-19 | Nextnav, Llc | Calibrating a pressure sensor |
| CN109642793A (en) * | 2016-09-09 | 2019-04-16 | 内克斯特纳夫有限公司 | System and method for calibrating unstable sensor |
| CN109922452A (en) * | 2019-02-12 | 2019-06-21 | 浙江每日互动网络科技股份有限公司 | A kind of method that server obtains mobile terminal height |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216272U (en) * | 1987-12-14 | 1988-12-07 | 陈国模 | Amendment hollow box gas-pressure altitude indicator |
| GB2293452A (en) * | 1994-09-26 | 1996-03-27 | Sagem | Method for adjusting the altitude given by an altimeter on board an aircraft |
| CN201094017Y (en) * | 2007-08-06 | 2008-07-30 | 樊生良 | Atmospheric pressure altimeter |
-
2009
- 2009-08-25 CN CN 200910306002 patent/CN101995236B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216272U (en) * | 1987-12-14 | 1988-12-07 | 陈国模 | Amendment hollow box gas-pressure altitude indicator |
| GB2293452A (en) * | 1994-09-26 | 1996-03-27 | Sagem | Method for adjusting the altitude given by an altimeter on board an aircraft |
| CN201094017Y (en) * | 2007-08-06 | 2008-07-30 | 樊生良 | Atmospheric pressure altimeter |
Non-Patent Citations (2)
| Title |
|---|
| 刘歌群 等.利用GPS校准_带温度补偿的无人机气压高度测量.《电子测量与仪器学报（增刊）》.2004,第1161－1165页. * |
| 畅世聪 等.气压高度表及其校准方法.《气象水文海洋仪器》.2002,(第2期),第36-39页. * |
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| CN101995236A (en) | 2011-03-30 |
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Granted publication date: 20130109 Termination date: 20160825 |