CN1854748A - Phonetic distance indicating method of dynamically-adjusted global satellite positioning system - Google Patents
Phonetic distance indicating method of dynamically-adjusted global satellite positioning system Download PDFInfo
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- CN1854748A CN1854748A CNA2005100342692A CN200510034269A CN1854748A CN 1854748 A CN1854748 A CN 1854748A CN A2005100342692 A CNA2005100342692 A CN A2005100342692A CN 200510034269 A CN200510034269 A CN 200510034269A CN 1854748 A CN1854748 A CN 1854748A
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Abstract
A method for dynamically regulating voice prompt distance of GPS includes receiving and decoding satellite signal of GPS and picking up speed parameter from said signal, converting obtained speed parameter for obtaining current driving speed, seeking a corresponding prompt distance out from built-in table stored in electronic unit according to current driving speed then updating and temporarily storing this prompt distance.
Description
[technical field]
The method of the voice suggestion distance of the relevant a kind of navigation software of the present invention, and particularly relevant for a kind of method of dynamically adjusting the voice suggestion distance of Global Positioning System (GPS) navigation software with running speed.
[background technology]
Global Positioning System (GPS) (Global Positioning System is called for short GPS) is time-consuming 20 years of U.S. Department of Defense, and cost surpasses the 12000000000 dollars of accurate satellite navigation of cover location plans that began to develop in 1973.It began emission from 1978, and in location, formal round-the-clock three-dimensional space of in October, 1993, the exploitation of Global Positioning System (GPS) system is former supported the military needs of going up on aviation and the aircraft to develop before this.And the Global Positioning System (GPS) system is now open for use among the people, has therefore just produced some revolutionary variations on life is used.For example, the car and boat in moving can be definite sees through Global Positioning System (GPS) and makes destination time of arrival and path; Ambulance more can promptly effectively be carried out the rescue task; Car steering person can see through electronic chart and know present position and this are toward destination where; Owing to have accurate three degree solid space positioning functions, can be applicable to planning and point-device zero vision (zero-visibility) landing system that aircraft navigation and approach tower are avoided collision system; Characteristic that U.S.'s Forest Supervisor's Headquarters in 1992 is had at Global Positioning System (GPS) itself and possible application direction thereof have been confirmed the work item more than 130 kinds (Greer, 1993).
The system architecture of Global Positioning System (GPS) generally can be divided into space unit (Space Segment), and control module (Control Segment) and user unit (User Segment) etc. three partly.
The space unit refers to the Global Positioning System (GPS) satellite in the space, though 26 satellites are only arranged at present, in fact if 24 satellites can reach when any, all can receive the 3D location requirement of 4～8 satellites, and other 2 satellites are to use as the preparation satellite.Arbitrary satellite cycle of operation in orbit is 12 hours, and the earth two circles promptly detour every day.On every Global Positioning System (GPS) satellite all device 4 atomic clocks are very accurately arranged, it also is standby design, wherein two is rubidium (Rubidium, Rb) atomic clock, two then is caesium (Cesium, Cs) atomic clock in addition, its precision is if measure for one second with error, rubidium atomic clock is about 30,000 years, and cesium-beam atomic clock then is (Leick, 1990) about 300,000 years.Wherein, the basic frequency of atomic clock is 10.23MHz, be the C/A code (frequency 1.023MHz) formed according to its different multiple value and the PRN of code at random (Pseudo Random Noise) of P code (10.23MHz), and (frequency is 154*10.23MHz to be modulated at the L1 carrier wave, wavelength is about 19cm) and L2 carrier wave (frequency 120*10.23MHz, wavelength is about 24cm) on, all the radio double frequency signal of furnishing 50BPS (bits per-second) continues broadcasting earthward at last.And in the purpose of these codes of modulation on the carrier wave be: a, borrow to measure the mistiming of code and obtain distance between satellite and receiver, b, all kinds of satellites of identification, but the employed object of c control, d. can eliminate the influence of non-geometry character factor.
The operation control system of Global Positioning System (GPS) (CONTROL SEGMENT) is finished in September, 1985.Total system comprises a master station, three ground-plane antennas and five monitoring stations.Each monitoring station all has Global Positioning System (GPS) double frequency receiving station, standard atomic clock, sensor and a data processor, and its WGS 84 coordinates all get through the precision measurement of U.S. national defense map service.Each monitoring station is ceaselessly followed the trail of each satellite of observation 24 hours every days, and the weather data that per 1.5 seconds pseudo range observed quantity and observation station are got and ionospheric data unite find the solution per 15 minutes homogenize data of one group (Smoothed Data).Then data are resent to master station.Master station is positioned at the associating Space Control Center in Chun Tian city, Colorado, its function is for receiving by five next various data of monitoring station transmission, and the correction parameter of the time table correction parameter that calculates satellite almanac data, satellite and ionosphere delay, be transmitted to satellite again for ground-plane antenna, to upgrade the data in the satellite.Master station is done the calculating of track correction simultaneously to satellite, send control command again, or the satellite of cancellation dysfunction is replaced by the preparation satellite.Ground-plane antenna utilizes the radiowave of S channel to transfer data to satellite.Will pass a secondary data back to satellite every eight hours under the normal conditions.The task of The whole control unit is for keeping satellite transit in the accurate orbit position, and the feedback lastest imformation is given satellite, and monitors that every satellite is to confirm running all normally.
User unit (USER SEGMENT) receiver that can receive the Global Positioning System (GPS) satellite signals that refers to.Because the Global Positioning System (GPS) purposes is very wide, the user can adopt the receiver of difference in functionality and precision according to the difference of purpose.Then should comprise receiver, register, display, antenna or an external antenna, data processor (PDA(Personal Digital Assistant) or computer (PC)) and power supply equipment etc. at least on for example being applied to measure.
Owing to there has been increasing vehicular manufacturer to classify Global Positioning System (GPS) as necessary outfit at present, therefore within the coming years, people can break away from when driving the unfamiliar place, always hold map on the other hand, compare while the path and the map of driving vehicle was once walked, the problem of present position has been sought in attempt.And at present commercially available Global Positioning System (GPS) is aspect turning or arriving the destination, the fixing tip distance of having only the user to preset, promptly no matter at present the speed of a motor vehicle how, before desiring the turning or reaching the destination, inform that with voice mode the user will turn or arrive the destination after how many distances (tip distance), please change correct track over to.When vehicle speed is very fast, will cause and miss turning or destination because tip distance is too short, or because track mistake and must urgent changing Lane, the former has wasted the time, and latter's accident that causes the accident possibly.
[summary of the invention]
Purpose of the present invention is exactly the method in the voice suggestion distance that a kind of dynamic adjustment Global Positioning System (GPS) is provided, it makes navigation software can dynamically adjust the tip distance of voice suggestion and alarm according to present running speed, so that the navigation feature of Global Positioning System (GPS) (GPS) is more humane.
The present invention proposes a kind of method of voice suggestion distance of dynamic adjustment Global Positioning System (GPS), the method is included in decodes to it after electronic installation receives the Global Positioning System (GPS) satellite-signal, then take-off speed parameter in the Global Positioning System (GPS) satellite-signal after the self-demarking code.Then, convert to get road speed up till now according to resulting speed parameter.Secondly, seek and the corresponding tip distance of road speed in the stored in-built meter of electronic installation according to present road speed.Then, renewal and temporary this tip distance.
Described according to preferred embodiment of the present invention, above-mentioned method more comprises when car reaches tip distance, electronic installation send voice suggestion and alarm song at least one of them.
Described according to preferred embodiment of the present invention, the step of above-mentioned reception and decoding Global Positioning System (GPS) satellite-signal comprises that the Global Positioning System (GPS) receiver by electronic installation receives this Global Positioning System (GPS) satellite-signal, and next amplifies the Global Positioning System (GPS) satellite-signal.Then, the Global Positioning System (GPS) satellite-signal is done the action of filtering noise, and then the Global Positioning System (GPS) satellite-signal is decoded.
Described according to preferred embodiment of the present invention, the tip distance in the above-mentioned in-built meter comprises and has configured when electronic installation dispatches from the factory or set by the user.
Described according to preferred embodiment of the present invention, above-mentioned speed parameter comprises minimum transfer data (RMC) or the relative displacement direction and the relative displacement speed (VTG) of GPS suggestion.
Therefore the present invention not only makes the navigation feature of Global Positioning System (GPS) (GPS) more humane, and can effectively must promote user's traffic safety and correctness because of adopting the voice suggestion distance of dynamically adjusting navigation software with running speed.
For making purpose of the present invention, structural attitude and function thereof are had further understanding, conjunction with figs. is described in detail as follows now:
[description of drawings]
Fig. 1 is the method step process flow diagram that illustrates according to the voice suggestion distance of a kind of dynamic adjustment Global Positioning System (GPS) of a preferred embodiment of the present invention.
Fig. 2 is a kind of flow chart of steps that receives and decode the Global Positioning System (GPS) satellite-signal that illustrates according to a preferred embodiment of the present invention.
Fig. 3 is the in-built meter synoptic diagram that illustrates according in a kind of electronic installation of a preferred embodiment of the present invention.
Fig. 4 is a kind of Global Positioning System (GPS) localization step process flow diagram that illustrates according to a preferred embodiment of the present invention.
Fig. 5 is the flow chart of steps that illustrates according to a kind of Global Positioning System (GPS) navigation of a preferred embodiment of the present invention.
[embodiment]
Please refer to Fig. 1, it illustrates the method step process flow diagram according to the voice suggestion distance of a kind of dynamic adjustment Global Positioning System (GPS) of a preferred embodiment of the present invention.The method is applicable to the tip distance of adjusting set point with the road speed of car.Wherein, as be familiar with this skill person and can know easily, this set point can be desire turning in the traffic route or default destination, but all not as limit.And electronic installation can for example be personal digital assistant (Personal Digital Assistant is called for short PDA), notebook computer or any device with navigation feature.
In the present embodiment, the method is for when car under steam the time, by automobile-used Global Positioning System (GPS) (Global Positioning System, be called for short GPS) antenna receives the Global Positioning System (GPS) satellite-signal of Global Positioning System (GPS) satellite, then by the circuit of electronic installation inside to this Global Positioning System (GPS) satellite-signal decode (s102).
Wherein, as shown in Figure 2, electronic installation receives and the step of decoding Global Positioning System (GPS) satellite-signal comprises by Global Positioning System (GPS) antenna reception Global Positioning System (GPS) satellite-signal (s202).Secondly, electronic installation is amplified (s204) with the Global Positioning System (GPS) satellite-signal, wherein, as be familiar with this skill person and can know easily, can for example be by active noise amplifying circuit (the LowNoise Amplifier in the electronic installation, abbreviation LNA) action of amplifying, but not as limit.
Wherein, the Global Positioning System (GPS) satellite-signal can for example be to amplify 27dB by the LNA circuit.
Then, after amplifying the Global Positioning System (GPS) satellite-signal, the electronic installation internal circuit is with the noise of filtering Global Positioning System (GPS) satellite-signal, (s206), wherein, as be familiar with this skill person and can know easily, can for example be the action of carrying out filtering by the active antenna filter in the electronic installation.Then, the receiver of electronic installation is then to filtered Global Positioning System (GPS) satellite-signal decode (s208).
Please continue with reference to Fig. 1, electronic installation after obtaining decoded Global Positioning System (GPS) satellite-signal, i.e. take-off speed parameter (s104) in the Global Positioning System (GPS) satellite-signal after the self-demarking code.Wherein, as be familiar with this skill person and can know easily, comprise NMEA (NationalMarine Electronics Association, Chinese--International Maritime Institution of Electronics) communications protocol data in the Global Positioning System (GPS) satellite-signal.This NMEA is the ASC of data message structure, content and the agreement of definition Global Positioning System (GPS) receiver and the communication of electronic equipment ship.And generally Global Positioning System (GPS) receiver and other navigation and the employed a kind of normal data communications protocol of marine electronics type are employed at present is NMEA 0183 communications protocol.
In the present embodiment, speed parameter in the NMEA communications protocol data has comprised minimum transfer data (the Recommended Minimum Specific of GPS suggestion, be called for short RMC) or relative displacement direction and relative displacement speed (Vector To Ground is called for short VTG).
In the present embodiment, electronic installation then converts (s106) to speed parameter after obtaining speed parameter, and obtains the present road speed of vehicle (s108) after conversion.Then, electronic installation is then according to seeking corresponding tip distance (s110) the in-built meter of present road speed in being stored in electronic installation.As shown in Figure 3, it illustrates according to the in-built meter synoptic diagram in a kind of electronic installation of a preferred embodiment of the present invention.Comprised road speed and corresponding tip distance in the in-built meter, wherein, this tip distance can for example be that electronic installation has configured when dispatching from the factory or set by the user, but all not as limit.
In the present embodiment, up till now after the corresponding tip distance of road speed, then that this is up-to-date tip distance temporarily is stored in (s112) in the electronic installation, and stored place for example is the erasable internal memory that just possessed originally in the electronic installation.When car reaches up-to-date tip distance before set point, electronic installation will send voice suggestion and alarm song one of them (s114) at least, to remind user's car to also have distance how far from set point at present, carry out corresponding action (for example being changing Lane or deceleration or the like) in order to the user.
In preferred embodiment of the present invention, most Global Positioning System (GPS) receiver all has American National ocean Institution of Electronics (National Marine Electronics Association, the NMEA) standard specification of being formulated.This standard specification has been stipulated the communication standard between all navigation electronic devices, comprises form and the transmission data communication agreement of transmitting data.The NMEA specification has 0180,0182 and 0183 etc. three kinds, preceding two kinds soon by the third replacement, because the third specification (NMEA-0183) is on the entity interface of electric transmission, comprise the ordered RS-232 interface specification of NMEA-0180 and NMEA-0182, and added the industrial standard interface of EIA-422 again.Aspect the data content that is transmitted, also many than NMEA-0180, NMEA-0182.
The data that the NMEA form is passed are that framework is on American National Standard information exchange code (AmericanStandard Code for Information Interchange is called for short ASCII).It is to transmit data in the mode of transmission sentence (Sentence), each sentence is used as beginning with " $ ", and be termination (being Line Feed sign indicating number and the Carriage Return sign indicating number among the ASCII) with decimal system handle " 10 ", " 13 ", sentence length is indefinite, the longest 82 characters (Character) that reach.And the field in the sentence (Field) is with comma; " separate, second and third character is the identification code of transmission equipment, and for example " GP " is the Global Positioning System (GPS) receiver, " LC " is the Loran-C receiver, and " OM " is Omega Navigation receiver or the like.Fourth, fifth, the sentence title of six characters for transmitting, for example " GGA " is GPS fixed data (Global Positioning System Fix Data); " RMC " is the minimum transfer data (Recommended Minimum Specific GPS/Transit Data) of GPS suggestion.When received NMEA communications protocol data are-$GPRMC, 081243, A, 2447.057, N, 12059.862, E, 000.1,054.7,160796,020.3, during E*68, wherein ， $GPRMC is the minimum transfer data of Global Positioning System (GPS) suggestion.081243 is that data were transmitted 8: 12: 43 Greenwich Mean Time.A represents receiver work (Active); If in warming-up, then be " N ".2447.057 N is north latitude 24 degree 47: 5.12059.862 E is east longitude 120 degree 59: 8.000.1 be illustrated in speed per hour 0.1 joint (Knot) on the face of land.054.7 expression signal strength.160796 expression data transmission dates were on July 16th, 1996.020.3 E represents that present magnetic declination is 20 three degree eastwards.* 68 is check code.
In preferred embodiment of the present invention, the representation formats of suggestion GNSS specification data (RMC) at least is:
$GPRMC，<1>，<2>，<3>，<4>，<5>，<6>，<7>，<8>，<9>，<10>，<11><CR><LF>
Wherein,＜1〉for standard setting time (UTC time) form: every minute constantly. second second second (hhmmss.sss).＜2〉be positioning states, the A=data can be used, and the V=data are unavailable.＜3〉be latitude, form: the degree degree divides. divide (ddmm.mmmm).＜4〉distinguish the Northern Hemisphere (N) or the Southern Hemisphere (S) for latitude.＜5〉be longitude, form: the degree degree divides. divide.＜6〉distinguish east (E) hemisphere or west (W) hemisphere for longitude.＜7〉be relative displacement speed, 0.0 to 1851.8knots.＜8〉be the relative displacement direction, 000.0 to 359.9 degree.Actual value.＜9〉be the date, form: everyday (ddmmyy) month in and month out every year.＜10〉be the magnetic pole variable, 000.0 to 180.0.＜11〉be the number of degrees.＜12〉be Checksum. (checking the position).
In preferred embodiment of the present invention, the representation formats of relative displacement direction and ground speed (VTG) is:
$GPVTG,＜1 〉, T,＜2〉and, M,＜3 〉, N,＜4〉and, K,＜5〉＜CR〉＜LF〉wherein,＜1〉be actual relative displacement direction, 000 to 359 degree.＜2〉be magnetic pole relative displacement direction, 000 to 359 degree.＜3〉be relative displacement speed, 00.0 to 999.9knots.＜4〉be relative displacement speed, 00.0 to 1851.8km/hr.＜5〉be Checksum. (checking the position).
Please then refer to Fig. 4, it illustrates a kind of Global Positioning System (GPS) localization step process flow diagram according to a preferred embodiment of the present invention.In the present embodiment, before car started, the user can be with the position at present place, by the electronic chart (s402) that starts this position in the navigation software.Secondly, electronic installation (guider) receives the Global Positioning System (GPS) satellite-signal, and the Global Positioning System (GPS) satellite-signal decoded, electronic installation will be by obtaining longitude and latitude data (s404) in the decoded Global Positioning System (GPS) satellite-signal then, wherein, electronic installation obtains the longitude and latitude data by NMEA communications protocol data.
Then, electronic installation then according to the longitude and latitude position display (s406) on electronic chart of resulting vehicle, wherein, as is familiar with this skill person and can be known easily, electronic installation with small icon (ICON) with the longitude and latitude position display on electronic chart.And in the advancing of car, electronic installation will upgrade the longitude and latitude position (s408) of vehicle on the electronic chart with fixed frequency.Then, between the advancing of car, can utilize step s104～s114, make dynamically to adjust the voice suggestion distance of electronic installation, the probability that has an accident with minimizing as Fig. 1.
Wherein, present Global Positioning System (GPS) satellite is sent locator data with one second fixed frequency once, and electronic installation then also upgrades the longitude and latitude position with one second fixed frequency once.
Please then refer to Fig. 5, it illustrates the flow chart of steps according to a kind of Global Positioning System (GPS) navigation of a preferred embodiment of the present invention.In the present embodiment, the user utilizes electronic installation (guider) when navigating, and it sets user's starting point and terminal point (s502) earlier.Wherein, the starting point major part all is that starting point is used as in the position when setting with the user, but not as limit.
After configuring starting point and terminal point, the software in the electronic installation can be cooked up the shortest traffic route (s504) on the electronic chart in electronic installation according to starting point and terminal point.Then, electronic installation will guide the user to advance in the route of planning in passive mode, and according to the vehicle longitude and latitude position display (s506) on electronic chart in the received Global Positioning System (GPS) satellite-signal of electronic installation.Wherein, so-called passive mode promptly is not to use the person to advance according to the route that electronic installation is planned, and the route that also can be planned with electronic installation is reference, advances according to the hobby of oneself.
In the present embodiment, electronic installation can be remembered starting point traffic route to terminal, or traffic route is begun to play by starting point, till terminal point (s508).
In preferred embodiment of the present invention, electronic installation can also be reminded the user turning and whether leave programme path or the like by voice mode in vehicle is advanced.
Comprehensive the above, the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) of the present invention not only makes the navigation feature of Global Positioning System (GPS) (GPS) more humane, and can effectively must promote user's traffic safety and correctness.
Claims (10)
1. a method of dynamically adjusting the voice suggestion distance of Global Positioning System (GPS) is applicable to a tip distance of adjusting a set point with a road speed of car, it is characterized in that this method comprises:
Receive and a Global Positioning System (GPS) (GPS) satellite-signal of decoding;
Take out a speed parameter in this Global Positioning System (GPS) satellite-signal after the self-demarking code;
Convert according to this speed parameter;
Get this road speed up till now;
In an in-built meter, seek corresponding this tip distance according to this road speed; And
Upgrade and temporary this tip distance.
2. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this method more comprises when car reaches this tip distance, send a voice suggestion and an alarm song at least one of them.
3. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that receiving and the step of this Global Positioning System (GPS) satellite-signal of decoding comprises:
Receive this Global Positioning System (GPS) satellite-signal;
Amplify this Global Positioning System (GPS) satellite-signal;
The noise of this Global Positioning System (GPS) satellite-signal of filtering; And
This Global Positioning System (GPS) satellite-signal after the filtering is decoded.
4. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this tip distance in this in-built meter comprises when this electronic installation dispatches from the factory and having configured.
5. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this tip distance in this in-built meter comprises by the user to be set.
6. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this speed parameter comprises the minimum transfer data (RMC) of GPS suggestion.
7. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this speed parameter comprises relative displacement direction and relative displacement speed (VTG).
8. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this Global Positioning System (GPS) satellite-signal comprises International Maritime Institution of Electronics (NMEA) communications protocol data.
9. the method for the voice suggestion distance of dynamic adjustment Global Positioning System (GPS) as claimed in claim 1 is characterized in that: this set point comprises the turning in the traffic route.
The method of the voice suggestion distance of 10 dynamic adjustment Global Positioning System (GPS)s as claimed in claim 1 is characterized in that: this set point comprises user's destination.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339044B (en) * | 2008-08-12 | 2012-01-04 | 深圳市凯立德欣软件技术有限公司 | Navigation system and navigation system voice prompt method |
| CN102364550A (en) * | 2011-10-12 | 2012-02-29 | 北京世纪高通科技有限公司 | Method and device for selecting information trigger position |
| CN101408438B (en) * | 2008-11-11 | 2012-05-30 | 深圳市凯立德欣软件技术有限公司 | Voice prompting method, apparatus and navigation equipment |
-
2005
- 2005-04-26 CN CNB2005100342692A patent/CN100552469C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339044B (en) * | 2008-08-12 | 2012-01-04 | 深圳市凯立德欣软件技术有限公司 | Navigation system and navigation system voice prompt method |
| CN101408438B (en) * | 2008-11-11 | 2012-05-30 | 深圳市凯立德欣软件技术有限公司 | Voice prompting method, apparatus and navigation equipment |
| CN102364550A (en) * | 2011-10-12 | 2012-02-29 | 北京世纪高通科技有限公司 | Method and device for selecting information trigger position |
| CN102364550B (en) * | 2011-10-12 | 2013-09-18 | 北京世纪高通科技有限公司 | Method and device for selecting information trigger position |
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