CN1755328A - Running image display method for navigation system - Google Patents
Running image display method for navigation system Download PDFInfo
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- CN1755328A CN1755328A CN 200410051731 CN200410051731A CN1755328A CN 1755328 A CN1755328 A CN 1755328A CN 200410051731 CN200410051731 CN 200410051731 CN 200410051731 A CN200410051731 A CN 200410051731A CN 1755328 A CN1755328 A CN 1755328A
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- rotation angle
- moving object
- rotation
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Abstract
The invention arranges the rotating angle of the map data and initial the accumulating rotating angle during the moving object initial period and then it measures the rotating angle of the moving object, and then it accumulates the measured rotating angle and the accumulation rotating angle. It quotes weather the accumulation rotating angle is above the rotating critical angle, when it is above the rotating critical angle; it repeats the movement of measuring the rotating angle and accumulating the measured rotating angle and the accumulation rotating angle.
Description
[technical field]
The present invention is relevant to the travel direction rotation of numerical map shown in the image according to moving object with regard to navigational system, so that the digital map display method of the display direction of the numerical map navigational system consistent with the travel direction of moving object.
[background technology]
Generally speaking, navigational system provides following function: that utilizes that a plurality of artificial satellite belong to GPS (Global PositioningSystem) launches transmits and is arranged on the detection signal of a plurality of sensors in the moving object with gyroscope (gyro) and speed pickup etc., and the current location of current moving object of travelling is calculated; The current location of the moving object of calculating making is with after digital map data is consistent, and the driving path from the current location to the destination is reconnoitred and travelling of moving object navigated.
In omnidirectional (full) navigational system that particularly on numerical map, shows the position of moving object and path simultaneously and the driving path of moving object is navigated, make the map datum rotation that in image, shows according to the travel direction of moving object, provide the composition of the road in the actual travel and the navigation picture that similarly travels to the user of moving object.
Map datum is rotated under the situation of demonstration in as above travel direction according to moving object, generally be that rotation angle with the GPS received signal that transmits that receives a plurality of artificial satellites and the moving object of being collected the sensor such as set gyroscope and electronic compass from moving object is that standard makes the map datum rotation, perhaps the angle of the road that travels with moving object is that standard makes the map datum rotation.
Fig. 1 is a signal flow graph of showing the existing method for displaying image that travels.As shown in the figure, in step 100, the signal of sensors such as gyroscope set in GPS received signal and the moving object and electronic compass is imported; In step 102, pass through the signal of sensors such as gyroscope set in the GPS received signal imported and the moving object and electronic compass, calculate the current location information of moving object.
In step 104, the current location information of the moving object of being calculated and the former positional information of moving object are compared, calculate the rotation angle of moving object; In step 106, after the rotation angle of the moving object of being calculated was set to the rotation angle of map datum, the rotation angle according to the map datum that sets in step 108 made the map datum rotation; In step 110, generate the navigation picture and on display panel, showing of travelling of moving object by map datum according to rotation.
But, above-mentioned prior art is owing to be that rotation angle according to moving object is rotated demonstration to map datum, so when on display panel, map datum being carried out update displayed, then, map datum is rotated demonstration according to changing with similarly trickle rotation angle such as the route change of moving object or the value of the error originated from input scope of GPS received signal and sensor signal.
That is, in Fig. 2 a～Fig. 2 c, symbol 200 is driving paths of moving object, and symbol 202 is positions of the moving object of measuring according to GPS received signal and sensor signal.Measuring moving object shown in Fig. 2 a, travelling as shown by arrows and, then shown in Fig. 2 b, map datum is rotated to the right and show on position (P1) to the left under the situation of rotation along driving path 200; Measure shown in Fig. 2 b moving object from position (P2) through position (P3) after rotation and under the situation that position P4 travels to the right, then shown in Fig. 2 c, map datum is rotated to the left and shows.
Therefore, there are the following problems: the frequent rotation of the navigation picture that travels and the shake of shown moving object on the display panel, and make the driver of moving object dazzled for this reason, bring a lot of obstacles to safety traffic.
[summary of the invention]
Therefore, the object of the present invention is to provide the method for displaying image that travels of following navigational system: can change with the trickle rotation angle of moving object or the state of the value of the error originated from input scope of GPS received signal and sensor signal under, display map data on display panel is not even consistently with the travel direction of moving object produce shake yet.
Another object of the present invention is to provide the method for displaying image that travels of following navigational system: even travel the rotation angle of moving object is sharply changed because of moving object breaks away from driving path and rotation, temporarily do not rotate digital map data shown on the display panel yet, but gently rotate successively and show.
The method for displaying image that travels of navigational system of the present invention with above-mentioned purpose is the following is feature:
Travel the initial stage in moving object, carry out initialization in the rotation critical angle that map datum is set and to the rotation angle that adds up after, measure moving object rotation angle and will measured rotation angle and the rotation angle that adds up add up.Whether rotation angle is to judge more than the rotation critical angle that sets to adding up, when the rotation angle that adds up is not being rotated on the critical angle, then carry out the rotation angle of measuring moving object and the action that the measured rotation angle and the rotation angle that adds up are added up repeatedly; When the rotation angle that adds up is being rotated on the critical angle, then after the rotation angle according to moving object is rotated, shows map datum and rotation angle carried out initialization, carry out the rotation angle of measuring moving object and will measured rotation angle and the action that adds up of the rotation angle that adds up repeatedly.As described above, the rotation angle that the present invention travels to moving object adds up, reach in the rotation angle that is added up under the situation on the rotation critical angle of prior setting, then map datum is rotated demonstration, the driving path that therefore not only can under the state that map datum is not shaken, show moving object, even the rotation angle of moving object sharply changes, map datum is sharply rotated, but rotation gently successively, for user's safety of moving object, accurately carry out driving path navigation.
[description of drawings]
Fig. 1 is a signal flow graph of showing the existing method for displaying image that travels.
Fig. 2 a～Fig. 2 c is used for synoptic diagram that the navigation picture that travels that shows according to the existing method for displaying image that travels is illustrated on display panel.
Fig. 3 is a structural drawing of showing the formation of the navigational system of using the method for displaying image that travels of the present invention.
Fig. 4 is a signal flow graph of showing the method for displaying image that travels of the present invention.
Fig. 5 a～Fig. 5 c and Fig. 6 a～Fig. 6 c are used for synoptic diagram that the navigation picture that travels that the method for displaying image that travels according to the present invention shows is illustrated on display panel.
[embodiment]
Below, with reference to accompanying drawing 3 and synoptic diagram, the method for displaying image that travels of navigational system of the present invention is described in detail.
Fig. 3 is a structural drawing of showing the formation of the navigational system of using the method for displaying image that travels of the present invention.As shown in the figure, constitute by following: receive position data GPS receiving element 302 by 3 above gps satellite 300 emissions; Be arranged in the moving object sensor 304 such as the gyroscope that the rotation angle of moving object is detected and electronic compass; Storing the map datum storage unit 306 of map datum in advance; Obtain the command input unit 308 of order according to user's operation; When moving object is moved, according to the received signal of GPS receiving element 302 and the detection signal of sensor unit 304, current location and rotation angle to moving object are judged, and in reference map datum storage unit 306 stored map datum, current location from the moving object judged is begun when navigating by the driving path the destination of command input unit 308 inputs, make the map datum rotation and make the travel direction of moving object and the consistent main control unit 310 of display direction of map datum according to the rotation angle of moving object; According to the control of main control unit 310, the display driver unit 312 that on display panel 314, current location that is rotated into map datum consistent with the travel direction of moving object and moving object and the path that will travel etc. is shown; According to the control of main control unit 310, the sound signal navigation elements 316 of with sound signal the driving path of moving object being navigated by loudspeaker.
Navigational system with above-mentioned formation, when the user imports destinations and moving object is travelled by command input unit 318, the gps data that is received by the GPS receiving element by main control unit 310 and the detection signal of sensor unit 304 judge the current location and the rotation angle of moving object, and read from the current location of being judged from map datum storage unit 316 and begin to the map datum of the driving path the destination.
If map datum is read, 310 of main control units according to the rotation angle of moving object with the map datum rotation of being read after, export its current location to display driver unit 312, the travel direction of moving object and the direction of map datum are as one man shown with moving object; Simultaneously, by audio frequency navigation elements 316, navigate with the navigating audio of loudspeaker 318 output movement object driving paths and to the driving path of mobile object.
Fig. 4 is a signal flow graph of showing the method for displaying image that travels of the present invention.As shown in the figure, at the navigational system running initial stage, in step 400, main control unit 310 is set the rotation critical angle that will be rotated demonstration to map datum by initialization action.At this, the rotation critical angle changes according to the trickle rotation angle of moving object or the value of the error originated from input scope of GPS received signal and sensor signal is set in advance.
In step 402, main control unit 310 is initialized as " 0 " with the rotation angle that adds up of moving object; In step 404, the GPS received signal that the GPS receiving element is received and the detection signal of sensor unit 304 are imported; In step 406, GPS received signal of importing passing through and detection signal calculate in the current location of moving object, current location and moving object position before this to the moving object of being calculated compare, and the rotation angle that makes the moving object rotation is calculated; In step 408, with the rotation angle of the moving object of being calculated with add up the rotation angle addition.
In step 410, whether 310 pairs of the main control units rotation angle that adds up is to judge on the rotation critical angle of setting in advance.Think that the rotation angle that adds up is under the situation on the rotation critical angle judging through step 410,310 of main control units are set at the rotation angle that adds up of moving object the rotation angle of map datum in step 412; In step 414, make the map datum rotation according to the rotation angle that sets after, export its current location to display driver unit 312 and on display panel 314, show with the moving object of being calculated; In step 416, the rotation angle that will add up is set at " 0 ".
Think and add up rotation angle on the rotation critical angle judging through step 410, perhaps on the rotation critical angle, map datum is rotated and shows and the rotation angle that will add up is initialized as " 0 " afterwards, in step 418, whether moving object travelled and judging according to the rotation angle that adds up.Under the situation that moving object is being travelled, then turn back to step 404 and measure the rotation angle of moving object; Reach under the situation of rotating on the critical angle in the rotation angle that adds up, then map datum is rotated demonstration.More than action is carried out repeatedly.
And, think under the situation that moving object stops to travel the navigation action of travelling that main control unit 310 finishes moving object judging through step 418.
Promptly, suppose that the present invention is shown in Fig. 5 a～Fig. 5 c, at driving path at moving object, the result who measures the position 502 of moving object by GPS received signal and sensor signal rotates a little to the left and right and travels, and then the left rotation and right rotation angle that moving object is travelled is measured and added and subtracted on the rotation angle that adds up and add up.Because the rotation angle that is added up is littler than the rotation critical angle of setting in advance, so do not make the map datum rotation, on display panel, in statu quo show, show the current location of moving object simultaneously.
And, shown in Fig. 6 a, moving object to right rotation from current location (P11) under the situation that the next position (P12) travels, then the rotation angle with moving object is accumulated on the rotation angle that adds up.Because the rotation angle that is added up is littler than the rotation critical angle of setting in advance,, when in statu quo showing, show the position that moving object is travelled so shown in Fig. 6 b, do not make the map datum rotation.And under the situation that the next position (P13) travels, then the rotation angle of the moving object that will travel to the next position (P13) from position (P12) is accumulated on the rotation angle that adds up from the position (P12) shown in Fig. 6 a.For example, be under the situation of rotation on the critical angle in the rotation angle that is added up, owing to surpassed ± and 60 ° scope, so shown in Fig. 6 c, map datum is rotated demonstration, show the driving path of moving object simultaneously according to the critical angle that adds up.
By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.
Therefore, the technical scope of this invention is not limited to the content on the instructions, must determine its technical scope according to interest field.
Claims (4)
1, the method for displaying image that travels of navigational system comprises:
The 1st step, the rotation angle that moving object is travelled detects and adds up;
Whether the 2nd step is to judge on the rotation critical angle of setting in advance to the rotation angle that is added up in the 1st step;
The 3rd step thinks that the rotation angle that adds up is under the situation on the rotation critical angle, then is rotated demonstration to map datum judging through the 2nd step.
2, the method for displaying image that travels of navigational system as claimed in claim 1 is characterized in that,
When the rotation angle that is added up in the 2nd step not under the situation on the critical rotation angle of setting in advance, carry out the 1st step that above-mentioned rotation angle is detected and adds up repeatedly.
3, the method for displaying image that travels of navigational system as claimed in claim 1 is characterized in that, further comprises:
The 4th step, in the 3rd step, map datum is rotated demonstration after, the rotation angle that is added up is carried out initialization.
4, the method for displaying image that travels of navigational system comprises:
The 11st step is travelled the initial stage in moving object, and the rotation critical angle of map datum is set and the rotation angle that adds up is carried out initialization;
The 12nd step detects and measured rotation angle is accumulated on the rotation angle that adds up the rotation angle of moving object;
Whether the 13rd step is to judge on the rotation critical angle that sets to the rotation angle that adds up of the 12nd step;
The 14th step is thought and adds up rotation angle under the situation on the rotation critical angle judging through the 13rd step, carries out repeatedly then that rotation angle to the moving object of the 12nd step detects and measured rotation angle is accumulated in action on the rotation angle that adds up;
The 15th step, the rotation angle that adds up in the 13rd step is under the situation on the rotation critical angle, then carry out following action repeatedly: according to the rotation critical angle map datum is rotated show and the rotation angle that adds up carried out initialization after, the rotation angle of the moving object of the 12nd step is detected and measured rotation angle is accumulated on the rotation angle that adds up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051731 CN1755328B (en) | 2004-09-29 | 2004-09-29 | Running image display method for navigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051731 CN1755328B (en) | 2004-09-29 | 2004-09-29 | Running image display method for navigation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1755328A true CN1755328A (en) | 2006-04-05 |
| CN1755328B CN1755328B (en) | 2010-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410051731 Expired - Fee Related CN1755328B (en) | 2004-09-29 | 2004-09-29 | Running image display method for navigation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116444A (en) * | 2013-02-07 | 2013-05-22 | 腾讯科技（深圳）有限公司 | Electronic map control method and electronic map device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359441C (en) * | 2002-03-05 | 2008-01-02 | 索尼爱立信移动通信日本株式会社 | Image processing device, image processing program, and image processing method |
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- 2004-09-29 CN CN 200410051731 patent/CN1755328B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116444A (en) * | 2013-02-07 | 2013-05-22 | 腾讯科技（深圳）有限公司 | Electronic map control method and electronic map device |
| CN103116444B (en) * | 2013-02-07 | 2016-05-11 | 腾讯科技（深圳）有限公司 | Electronic chart control method and electronic map device |
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| Publication number | Publication date |
|---|---|
| CN1755328B (en) | 2010-04-14 |
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