CN101825472B - Navigation unit and navigation method - Google Patents
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- CN101825472B CN101825472B CN200910004556.7A CN200910004556A CN101825472B CN 101825472 B CN101825472 B CN 101825472B CN 200910004556 A CN200910004556 A CN 200910004556A CN 101825472 B CN101825472 B CN 101825472B
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Abstract
The invention relates to a navigation unit and a navigation method, which are used for acquiring visibility information in the current position region on the expressway, and prompting and guiding a user to drive off the expressway when the visibility is lower than a specified value. The navigation unit comprises a storage part, a current position detection part, a destination setting part, a route searching part, a route guide part, a display part, a visibility information acquisition part, a judgment part and an existing guide part, wherein the visibility information acquisition part is used for acquiring visibility information including current position region; the judgment part is used for judging whether the visibility in the region is lower than a preset value according to the visibility information; and when the current position detection part detects that the current position is on the expressway and the judgment part judges that the visibility in the region is lower than the first preset value, the guide exiting part prompts the user to leave the expressway from the exit nearest to the current position. When the visibility is lower than a specified value, the invention can prompt and guide the user to leave the expressway exit nearest to the current position or raise a warning to the user, thereby ensuring the safety of the user.
Description
Technical field
The present invention relates to the visibility information obtaining Current location area on a highway, low visibility in setting time guide user to leave guider and the air navigation aid of highway.
Background technology
At present, after user sets destination, the guiding route from current location to destination can be explored, and popularize just rapidly along the guider that this guiding route guides.Further, recently, consider weather information as described in following documents 1 thus explore the navigation feature of guiding route be more suitable for.The guider recorded in this documents 1, not only selecting optimal route by comparing the time arrived required for destination, can also consider weather information, explore the route in the place without bad weather as far as possible.
Documents 1 JP 2002-206936
But, because the guider recorded in above-mentioned documents 1 is the cost calculating each bar route according to data of weather forecast, therefore, if when there is the burst Changes in weather such as the inscrutable sandstorm of weather forecast, the guider recorded in above-mentioned documents 1 is difficult to reply.Such as, following clear stipulaties is had in People's Republic of China's law on road traffic safety implementing regulations the 81st article, when motor vehicles travel on a highway, when meeting the low visibility meteorological conditions such as mist, rain, snow, sand and dust, hail, corresponding 1. following ~ 3. three kinds of situations, the travel speed of restriction vehicle and vehicle headway, especially define when visibility is less than certain setting, must sail out of highway as early as possible.And the guider recorded in above-mentioned documents 1 to should regulations, can not carry out appropriate route guidance.
1. visibility is greater than 100 meters when being less than 200 meters, and the speed of a motor vehicle must not exceed 60 kilometers per hour, keeps the distance of more than 100 meters with same track front truck;
2. visibility is greater than 50 meters when being less than 100 meters, and the speed of a motor vehicle must not exceed 40 kilometers per hour, keeps the distance of more than 50 meters with same track front truck;
3., when visibility is less than 50 meters, the speed of a motor vehicle must not exceed 20 kilometers per hour, and sails out of highway from nearest outlet as early as possible.
Summary of the invention
The present invention be directed to above-mentioned problem to make, object is to provide a kind of guider, when vehicle travels on a highway, obtain the visibility information comprising the region of current location, when visibility is less than setting (such as: the visibility value specified in People's Republic of China's law on road traffic safety) of setting in advance, can point out, guide user to leave highway from the outlet that distance current location is nearest, thus ensure the safety traffic of user.
Guider involved in the present invention, has storage part, store map data; Current location detecting element, detects current location; Configuration part, destination, setting destination; Route searching portion, explores the guiding route between above-mentioned current location to above destination; Route guidance portion, guides to destination along above-mentioned guiding route; Display part, display comprises the map of current location; Also have: visibility information acquisition unit, obtain the visibility information comprised in the region of current location; According to stating visibility information, judging part, judges whether the visibility of above-mentioned zone is less than setting; Escape leading portion, detects current location by above-mentioned current location detecting element and is positioned at highway, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned judging part, prompting user leaves highway by the outlet that distance current location is nearest.
Guider involved in the present invention, highway is positioned at when above-mentioned current location detecting element detects current location, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned judging part, detect above-mentioned nearest outlet by above-mentioned escape leading portion and point out position and the title of this outlet, pointing out user to be left by this outlet simultaneously.
Guider involved in the present invention, highway is positioned at when above-mentioned current location detecting element detects current location, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned judging part, guiding route between being explored from current location to above-mentioned nearest outlet by above-mentioned route searching portion, and along this guiding route, user is guided to nearest outlet by above-mentioned route guidance portion.
Guider involved in the present invention, when setting destination in advance by above destination configuration part, above-mentioned route searching portion is explored from current location via the above-mentioned guiding route be exported to recently between above destination again in the mode that Ordinary Rd is preferential, and along this guiding route, user is guided to destination by above-mentioned route guidance portion.
Guider involved in the present invention, also has: vehicle headway information acquiring section, obtains this car with range information between front vehicles; Warning portion, highway is positioned at when above-mentioned current location detecting element detects current location, and judge that the visibility of above-mentioned zone is greater than the 1st setting and is less than the 2nd setting by above-mentioned judging part, and when the above-mentioned vehicle headway obtained by above-mentioned vehicle headway information acquiring section is below predetermined distance, give a warning.
Guider involved in the present invention, above-mentioned visibility information acquisition unit is made up of following part: outside vehicle is photographed thus obtain the image acquiring unit of outside vehicle scene image, visibility calculating part that the image processing part processed by the image obtained by above-mentioned image acquiring unit, the data that obtain according to above-mentioned image processing part carry out visibility calculating.
Guider involved in the present invention, above-mentioned visibility information acquisition unit obtains the visibility information in the region comprising current location according to the communication of same external server or the broadcast singal that receives.
Air navigation aid involved in the present invention, has: current location detects step, detects current location; Step display, display comprises the map of current location; Also have: visibility information obtaining step, obtain the visibility information comprised in the region of current location; According to above-mentioned visibility information, determining step, judges whether the visibility of above-mentioned zone is less than setting; Escape leading step, detect step by above-mentioned current location to detect current location and be positioned at highway, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned determining step, prompting user leaves highway by the outlet that distance current location is nearest.
Air navigation aid involved in the present invention, detect current location be positioned at highway when being detected step by above-mentioned current location, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned determining step, detect above-mentioned nearest outlet by above-mentioned escape leading step and point out position and the title of this outlet, pointing out user to be left by this outlet simultaneously.
Air navigation aid involved in the present invention, has: route searching step, the guiding route exploring from above-mentioned current location to destination; Route guidance step, guides to destination along above-mentioned guiding route; When above-mentioned determining step judges that the visibility of above-mentioned zone is less than the 1st setting, guiding route between being explored from current location to above-mentioned nearest outlet by above-mentioned route searching step, and along this guiding route, user is guided to nearest outlet by above-mentioned route guidance step.
Air navigation aid involved in the present invention, there is the destination setting procedure of setting destination, again explored from current location via the above-mentioned guiding route be exported to recently between above destination in the mode that Ordinary Rd is preferential by above-mentioned route searching step, and along this guiding route, user is guided to destination by above-mentioned route guidance step.
Air navigation aid involved in the present invention, also has: vehicle headway information acquiring step, obtains this car with range information between front vehicles; Warning step, detect current location be positioned at highway when above-mentioned current location detects step, and judge that the visibility of above-mentioned zone is greater than the 1st setting and is less than the 2nd setting by above-mentioned determining step, and when the above-mentioned vehicle headway obtained by above-mentioned vehicle headway information acquiring step is below predetermined distance, give a warning.
Accompanying drawing explanation
Fig. 1 is on-vehicle navigation apparatus structural representation of the present invention.
Fig. 2 is the functional block diagram of on-vehicle navigation apparatus of the present invention.
Fig. 3 is the workflow diagram of the on-vehicle navigation apparatus in first embodiment of the invention.
Fig. 4 is the workflow diagram of the on-vehicle navigation apparatus in second embodiment of the invention.
Fig. 5 is the workflow diagram of the on-vehicle navigation apparatus in third embodiment of the invention.
Fig. 6 is the workflow diagram of the on-vehicle navigation apparatus in four embodiment of the invention.
Fig. 7 is the workflow diagram of the on-vehicle navigation apparatus in fifth embodiment of the invention.
Display illustration when Fig. 8 is guider route guidance of the present invention
Fig. 9 is the display illustration of the on-vehicle navigation apparatus of first embodiment of the invention.
Figure 10 is the display illustration of the on-vehicle navigation apparatus of second embodiment of the invention.
Figure 11 is the display illustration of the on-vehicle navigation apparatus of third embodiment of the invention.
Figure 12 is the display illustration of the on-vehicle navigation apparatus of four embodiment of the invention.
Figure 13 is the first display illustration of the on-vehicle navigation apparatus of fifth embodiment of the invention.
Figure 14 is the second display illustration of the on-vehicle navigation apparatus of fifth embodiment of the invention.
Figure 15 is the 3rd display illustration of the on-vehicle navigation apparatus of fifth embodiment of the invention.
In figure: 101: storage device 102:GPS receiving system 103: radar installations 104: microprocessor 105: vehicle-mounted vidicon 106: sensor 107: input unit 108: external signal receiving system 109: apparatus for processing audio 110: display unit 111: loudspeaker
Detailed description of the invention
Below, with reference to accompanying drawing, the present invention is described in detail.
Fig. 1 is the structural representation of on-vehicle navigation apparatus of the present invention.In figure, 101 is storage device, be made up of semiconductor memories such as rom memory cell or Flash-ROM etc. such as HDD (hard disk), CD and DVD, except crosspoint (node) information, the road category information (highway, national highway, Ordinary Rd etc.) of store map data, road connection data, road, and realize the necessary program of the function such as route searching, route guidance.In storage device 101, also graduation stores visibility when meeting the travelling on a highway of above-mentioned People's Republic of China (PRC) traffic safety implementing regulations the 81st article regulation, simultaneously stores corresponding each visibility scale with the form of database and the restricted information (maximum speed limit, vehicle headway, exit the information such as prompting) that sets.Wherein, restricted information also comprises the regulation must leaving highway when visibility is less than setting as early as possible.102 is GPS receiving system, detects this car current location and present orientation by the signal received from gps satellite.105 is vehicle-mounted pick-up (photograph) machine, and shooting comprises the scene image of vehicle front, the image of acquisition is outputted to microprocessor 104, is obtained the visibility information in the region comprising current location by the process of microprocessor 104.From the image that onboard camera 105 is taken, obtain the method for visibility information, use the method recorded in following documents 2, documents 3, omit here and explain.
Documents 2 JP 2008-39763
Documents 3 Unexamined Patent 8-219784
108 is external signal receiving system, receives the signals such as FM multiplex broadcasting, the external signal such as wireless signal that the external communication device that is arranged on road both sides sends or the information that sent by telephone wire.103 is radar installations, launches radar wave, calculates the vehicle headway between Ben Che and front vehicles, and this vehicle headway information is outputted to microprocessor 104 by reception back wave.106, for detecting speed of a motor vehicle sensor, detect the travel speed that this car is current.107 is input unit, is made up of input equipments such as keyboard, remote controller or touch-screens, is outputted in microprocessor 104 by the signal that user inputs.110 is display unit, is made up of color CRT or color liquid crystal display unit etc., map picture, visibility hint image and the route guidance picture etc. that export can be presented on screen from microprocessor 104 and by not shown display driver.109 is apparatus for processing audio, processes the audio signal such as guiding sound from microprocessor 104, and is exported by loudspeaker 111 via not shown amplifier.
Fig. 2 is the functional block diagram being applicable to on-vehicle navigation apparatus of the present invention.Symbol 201 is current location detecting element, is made up of, detects this car travel direction and current position coordinates above-mentioned GPS receiving system 102 etc.Configuration part, ground for the purpose of symbol 202, according to the destination information that input unit 107 inputs, map reference carries out destination setting.Symbol 203 is route searching portion, according to the map datum stored in storage part 213 (storage device 101) and road data, explore the guiding route of current location to the destination set by configuration part, destination 202 of the vehicle detected from current location detecting element 201.Symbol 204 is route guidance portion, generating according to the boot stored in storage part 213 (storage device 101) guides user to arrive the guidance information of destination along guiding route, and by above-mentioned guidance information by display unit 110 or/and loudspeaker 111 with image or/and the mode of sound exports.Symbol 210 is image acquiring unit, such as, be made up of above-mentioned vehicle-mounted vidicon 105, obtains the scene image comprising the region of this car current location.Symbol 211 is image processing part, processes the view data obtained by above-mentioned image acquiring unit 210, and result is outputted to visibility calculating part 212.Visibility calculating part 212, according to the computing formula recorded in above-mentioned documents 2 and documents 3, calculates the current current visibility information comprising the region of this truck position.In the on-vehicle navigation apparatus shown in Fig. 2, constitute visibility information acquisition unit 209 by above-mentioned image acquiring unit 210, image processing part 211, visibility calculating part 212 etc.Except this, also can form visibility information acquisition unit 209 by said external information receiver 108, directly obtain the current visibility information in the region comprising this car current location from external server.Symbol 205 is judging part, relatively the current visibility of visibility information acquisition unit 209 acquisition and the visibility setting of the middle graduation storage of storage part 213 (storage device 101), judge which visibility interval range is the visibility of current vehicle position be in.Symbol 206 is escape leading portion, according to the judged result of above-mentioned judging part 205, if when the current visibility information that above-mentioned visibility information acquisition unit 209 obtains is less than setting, left from the outlet that distance present position highway is nearest with image and/or sound guidance user.Symbol 207 is vehicle headway information acquiring section, obtains the vehicle headway information between this car and front vehicles by above-mentioned trailer-mounted radar device 103.Symbol 208 is warning portion, when above-mentioned vehicle headway information acquiring section 207 obtain be less than setting with the vehicle headway of front truck time, with sound and/or image mode, user is warned.Each component part shown in above-mentioned symbol 201 ~ 213, is connected with control part 200 respectively, controls its action by this control part 200, and this control part 200 is made up of microprocessor 104 and not shown RAM etc.
Below in detail the specific embodiment of the present invention will be described.
[the first embodiment]
Below, the on-vehicle navigation apparatus in first embodiment of the invention is described.Fig. 3 is the workflow diagram of the on-vehicle navigation apparatus represented in first embodiment of the invention, the display illustration that Fig. 8 is display illustration when representing on-vehicle navigation apparatus route guidance of the present invention, Fig. 9 is the on-vehicle navigation apparatus of the first embodiment of the present invention.First, the workflow of the on-vehicle navigation apparatus of first embodiment of the invention is described with reference to Fig. 3.
On-vehicle navigation apparatus of the present invention, after power supply is connected, then to detect the current location (step S100) of this car by current location detecting element 201 according to the time interval (such as 1 second) of regulation.The current position coordinates that control part 200 detects according to step S100 and the road data that storage part 213 stores, judge whether on a highway current location, namely judge whether this car travels on a highway (step S101).Current location not on a highway time (step S101: no), return step S100.When current location is positioned on highway (step S101: yes), image acquiring unit 210 in required time interval (such as: 10 seconds) takes the image of outside vehicle, and this view data is outputted to image processing part 211; Image processing part 211 image data processing, and this result is outputted to visibility calculating part 212; Visibility calculating part 212 computing formula according to the rules, calculates current visibility information (step S102).In addition, the visibility information comprising the region of current location is obtained the external information that also can obtain from external signal receiving system 108 in step S102.
Then, judged by judging part 205 whether the visibility of the current location of above-mentioned acquisition is less than the setting (step S103) be stored in advance in storage part 213 (storage device 101).If judging part 205 judges that the visibility of current location is more than or equal to setting (step S103: no), then return step S100.If judging part 205 judges that the visibility of current location is less than setting (step S103: yes), then control part 200 passes through display unit 110 or/and loudspeaker 110, in the mode of picture and/or sound, prompting user should leave highway (step S104) from the outlet nearest from current location.
Accordingly, due under the situation of low visibility, user can leave highway rapidly, thus can ensure safe driving.
Fig. 8 is display illustration when representing on-vehicle navigation apparatus route guidance of the present invention.Fig. 9 is the display illustration being applicable to first embodiment of the invention.Fig. 8 is that this car (position mark is symbol M) travels on the M9 highway drawn by two black lines, and the guide line (black thick line) that guider is in along generating guides user to the display frame of the state of destination (symbol P).If now judge that the low visibility comprising the region of this car current location is in setting (afore mentioned rules value is set as 50 meters in present embodiment) according to above-mentioned steps S102 by above-mentioned judging part 205, in display unit 110, then show the display frame with " current low visibility is in 50 meters; please sail out of highway from nearest outlet as early as possible " information as shown in Figure 9, and point out user by the mode of sound simultaneously.
[the second embodiment]
Below, the on-vehicle navigation apparatus in second embodiment of the invention is described.Fig. 4 is the workflow diagram of the on-vehicle navigation apparatus represented in second embodiment of the invention, and Figure 10 is the display illustration of the on-vehicle navigation apparatus of this second embodiment.First, the workflow of the on-vehicle navigation apparatus of second embodiment of the invention is described with reference to Fig. 4.
Step S200 in Fig. 4, step S201, step S202, step S203 are identical with the contents processing of the step S100 shown in Fig. 3, step S101, step S102, step S103 respectively, therefore omit related description.In step S203, if judging part 205 judges that the visibility of current vehicle position is more than or equal to setting (step S203: no), then return step S200.If judging part 205 judges that the visibility of current vehicle position is less than setting (step S203: yes), then control part 200 is according to the map datum in storage part 21 3 and road data, the expressway exit (step S204) that retrieval distance current location is nearest.And, escape leading portion 206, while the position showing above-mentioned nearest expressway exit on the screen of the display apparatus and title, point out user should leave highway (step S205) from this outlet by display unit 110 and/or loudspeaker 111 in the mode of image and/or sound.
Accordingly, due under low visibility when, also can learn position and the title of nearest expressway exit, what user can be certain leaves highway from this nearest outlet.
Figure 10 is the display illustration of the on-vehicle navigation apparatus representing the second embodiment of the present invention.When this car (position mark is symbol M) travels on the A9 highway drawn by two black lines as shown in Figure 10, the step S203 of corresponding above-mentioned workflow, when above-mentioned judging part 205 judges that the visibility comprising the region of this car current location is less than setting (in the present embodiment, setting is set as 50 meters), control part 200 retrieves the nearest outlet in front, current location.It is the nearest outlet in distance users current location that the result of retrieval shows that km place, front 20 T2 exports (symbol N).So, nearest expressway exit (T2 outlet) is presented on map by escape leading portion 206, show the information of " current visibility is too low, please rolls highway away from from the T2 outlet of front 20KM " simultaneously with the form of word, point out by the mode of sound simultaneously.
[the 3rd embodiment]
Below, the on-vehicle navigation apparatus in third embodiment of the invention is described.Fig. 5 is the workflow diagram of the on-vehicle navigation apparatus represented in third embodiment of the invention, and Figure 11 is the display illustration of the on-vehicle navigation apparatus of the 3rd embodiment.First, the workflow of the on-vehicle navigation apparatus of third embodiment of the invention is described with reference to Fig. 5.
Step S300 in Fig. 5, step S301, step S302, step S303 are identical with the contents processing of the step S100 in Fig. 3, step S101, step S102, step S103 respectively, omit related description.In step S303, if judging part 205 judges that the visibility of this car current location is more than or equal to setting (step S303: no), then return step S300.If judging part 205 judges that the visibility of this car current location is less than setting (step S302: yes), then control part 200 is according to the map datum in storage part 213 and road data, the expressway exit (step S304) that retrieval distance current location is nearest.If retrieve nearest expressway exit, then route searching portion 203 to explore from current location to above-mentioned nearest expressway exit guiding route (step S305).Afterwards, the guiding route that route guidance portion 204 is explored according to route searching portion 203, control display unit 110 and/or apparatus for processing audio 109, the guiding route arriving above-mentioned nearest expressway exit is presented at (black line in Figure 11 on A9 highway) on map, and carries out route guidance (guiding of the position of expressway exit, the distance arriving this outlet, due in etc.) along this guiding route.In addition, escape leading portion 206 shows the Name & Location of above-mentioned nearest expressway exit on the screen of display unit 110, guides user to leave highway (step S306) from above-mentioned outlet recently by display unit 110 and/or loudspeaker 111 with the form of image and/or sound simultaneously.
Accordingly, due under the situation of low visibility, automatically can carry out the route guidance arriving nearest expressway exit, what user can be certain leaves highway from this nearest outlet.
Figure 11 is the display illustration representing on-vehicle navigation apparatus in the 3rd embodiment of the present invention.This car (position mark is symbol M) travels on the A9 highway drawn by two black lines as shown in figure 11, according to the step S303 in above-mentioned workflow, when the low visibility that above-mentioned judging part 205 judges to comprise the region of this car current location is in afore mentioned rules value (in the present embodiment, setting is set as 50 meters), control part 200 retrieves the nearest outlet in front, current location.It is the nearest outlet in distance users current location that the result of retrieval shows that km place, front 20 T2 exports (symbol N).So route searching portion 203 generates by current location M to the guiding route exporting N (T2 outlet) recently, and generated guiding route is presented at as shown in figure 11 (the black thick line on A9 highway) in display frame.Further, route guidance is started along this guiding route.On the other hand, nearest outlet N (T2 outlet) shows by escape leading portion 206 on map, simultaneously with text prompt user " current visibility is too low, please rolls highway according to guiding route away from from the T2 outlet of front 20KM ", use auditory tone cues user simultaneously.
[the 4th embodiment]
Below, the on-vehicle navigation apparatus in four embodiment of the invention is described.Fig. 6 is the workflow diagram of the on-vehicle navigation apparatus represented in four embodiment of the invention, and Figure 12 is the display illustration of the on-vehicle navigation apparatus of the 4th embodiment.First, the workflow of the on-vehicle navigation apparatus of four embodiment of the invention is described with reference to Fig. 6.
Job step S400 in Fig. 6, step S401, step S402, step S403 are identical with the contents processing of the job step S100 in Fig. 3, step S101, step S102, step S103 respectively, therefore detailed.In step S403, if judging part 205 judges that the visibility of current vehicle position is more than or equal to setting (step S403: no), then return step S400; If judging part 205 judges that the visibility of current vehicle position is less than setting (step S403: yes), then control part 200 judges whether current navigation device is in the route guidance state (step S404) of destination.If judge, guider is not when route guidance state (step S404: no), then carries out the process of step S407, step S408, step S409.Step S407, step S408, step S409 are identical with the contents processing of the step S304 shown in Fig. 5, step S305, step S306 respectively, therefore omit the description.On the other hand, if control part 200 judges to be in route guidance state (step S404: yes), then control part 200 is according to the map datum stored in storage part 213 and road data, the expressway exit that retrieval is nearest apart from present position.If retrieve nearest expressway exit, the current location from this car is explored again in the mode that Ordinary Rd is preferential by route searching portion 203, via above-mentioned nearest expressway exit, arrive the guiding route (step S405) of above destination.Thereafter, the guiding route that route guidance portion 204 arrives according to route searching portion 203 new exploration, control display unit 110 and/or apparatus for processing audio 109, will from current location, via above-mentioned nearest expressway exit, the guiding route adopting Ordinary Rd to arrive destination shows on map, and carries out route guidance along this guiding route.In addition, escape leading portion 206 shows the Name & Location of above-mentioned nearest expressway exit on the screen of display unit 110, pass through display unit 110 or/and loudspeaker 111 simultaneously, with image or/and the form of sound, user's outlet nearest from current location is guided to leave highway (step S406).
Accordingly, when low visibility, user can leave highway from nearest outlet, adopts Ordinary Rd to guide user to go to destination, thus arrival destination that can be safe.
Figure 12 is the display illustration representing on-vehicle navigation apparatus in present embodiment.This car (position mark is symbol M) travels on the M9 highway drawn by two black lines as shown in figure 12, during the destination going to symbol P to mark, according to the step S403 of above-mentioned workflow, when above-mentioned judging part 205 judges to be less than afore mentioned rules value by the visibility in the region comprising this truck position M (setting is set as 50 meters in the present embodiment), control part 200 retrieves the nearest outlet in M front, current location.The result of retrieval shows that the T1 outlet shown in symbol N is the outlet nearest apart from present position M.So, route searching portion 203 explores from current location M again, leaves M9 highway via nearest outlet N, and arrives the guiding route of destination P through Ordinary Rd, and guiding route exploration arrived as shown in figure 12 (black thick line), and display frame shows.Further, start to carry out route guidance along this guiding route.On the other hand, nearest outlet N (T1 outlet) is presented on map by escape leading portion 206, simultaneously, with text prompt user " because current visibility is too low; navigating guiding, you arrive destination from Ordinary Rd after highway is rolled in T1 outlet in front away from ", sound guides user simultaneously.
[the 5th embodiment]
Below, the on-vehicle navigation apparatus in fifth embodiment of the invention is described.Fig. 7 is the workflow diagram of the on-vehicle navigation apparatus represented in fifth embodiment of the invention, and Figure 13, Figure 14, Figure 15 are the display illustrations of the on-vehicle navigation apparatus of the present embodiment.
In the present embodiment, according to above-mentioned People's Republic of China (PRC) law on road traffic safety implementing regulations the 81st article, the setting of graduation setting visibility, sets the restricted information corresponding with the visibility of each grade simultaneously and warns content.Specifically, set that the 1st setting is visibility 50 meters, the 2nd setting is visibility 100 meters, the 3rd setting is visibility 200 meters, further, above-mentioned each setting, corresponding each setting restricted information (speed-limiting messages and minimum following distance information) and warning content be stored in storage part 213 with the form of database.In addition, each setting of visibility, restricted information and warning content are except can according to except the regulation of People's Republic of China's traffic safety implementing regulations the 81st article, can also set according to the law on road traffic safety of country variant or other laws and regulations, also can in the scope of legal provisions sets itself.
First, with reference to Fig. 7, Figure 13 ~ Figure 15, the workflow of the on-vehicle navigation apparatus of fifth embodiment of the invention is described.
Step S600 in Fig. 7 ~ step S604 is identical with the contents processing of the step S100 ~ step S104 in workflow diagram Fig. 3 of the on-vehicle navigation apparatus in the first embodiment respectively, therefore omits and explains.Namely in the way that this car travels on highway A9, according to step S603, when above-mentioned judging part 205 judges that the visibility (such as 45 meters) comprising the region of current vehicle position is less than the 1st setting 50 meters (step S603: yes), escape leading portion 206 shows the guide picture as shown in display illustration Fig. 9 of the first embodiment of the present invention or display illustration Figure 10 of the second embodiment of the present invention, with image or/and the form prompting user of sound leaves highway (step S604) from nearest outlet N.
In addition, in the on-vehicle navigation apparatus of this 5th embodiment, when judging in step S603 that the visibility comprising the region of current vehicle position is less than the 1st setting 50 meters (step S603: yes), the sensor 106 detects this car current driving speed, and the restricted information (speed-limiting messages) of this travel speed with corresponding visibility the 1st setting stored in above-mentioned storage part 213 compares by control part 200.If the result compared is travel speed (such as 38KM/H) when being greater than corresponding maximum speed limit (such as the 20KM/H) of visibility the 1st setting, escape leading portion 206 as shown in figure 13, the screen of display unit 110 shows word, and " current visibility is 45M, and current vehicle speed is 38Km/H.In order to your safety, would you please keep the speed of a motor vehicle to below 20Km/H.The current guiding route of change helps you to roll highway away from from nearest outlet by guider ", reminding user reduces travel speed, leaves highway from nearest outlet N.
In the step S603 of Fig. 7, judging part 205 judges that the visibility of current location is more than or equal to the 1st setting (step S602: no), then continue to judge whether visibility is less than the 2nd setting (step S700); Namely judge whether visibility is greater than the 1st setting 50 meters, be less than the 2nd setting 200 meters.If when judging part 205 judges that the visibility (such as 90 meters) of current vehicle position is less than the 2nd setting (100 meters) (step S700: yes), vehicle headway information acquiring section 207 (radar installations 103) obtains the vehicle headway information between this car and front vehicles, and detects the current travel speed of this car (step S701) by sensor 106.Whether the vehicle headway that control part 200 determining step S701 obtains is less than the vehicle headway setting corresponding to visibility range of the 1st setting ~ the 2nd setting stored in above-mentioned storage part 213, and whether the travel speed of step S701 acquisition is greater than the maximum speed limit setting (step S702) corresponding to visibility range of the 1st setting ~ the 2nd setting stored in above-mentioned storage part 213.If judged result is Ben Che and front vehicles vehicle headway be not less than setting and current driving speed is not more than setting time (step S702: no), then return step S600.On the other hand, if in step S702, when any one in Ben Che and front vehicles vehicle headway, current driving speed does not meet setting (step S702: yes), carry out the following process that gives a warning.Such as, in the present embodiment, step S701 detects that vehicle headway is 105 meters, current driving speed is 58KM/H, and the vehicle headway setting stored in above-mentioned storage part 213 is 50 meters, and maximum speed limit setting is 40KM/H.Now, vehicle headway 105 meters is greater than setting 50 meters, conforms with the regulations, but current driving speed 50KM/H is greater than regulation maximum travel speed 40KM/H, does not meet regulation, belongs to the situation of " step S702 is yes ".Now, the warning message stored in advance in storage part 213 is called in above-mentioned warning portion 208, control display unit 110 and/or apparatus for processing audio 109, " current visibility is 90M to display warning picture as shown in figure 14; be 105M with leading vehicle distance; current vehicle speed is 58Km/H, and in order to your safety, the low speed of a motor vehicle of begging to surrender is to below 40Km/H and to keep with leading vehicle distance be more than 50.”。And loudspeaker 111 sound can be driven to carry out warning (step S703) simultaneously.
If in above-mentioned steps 700, judging part 205 judges that the visibility of current vehicle position is greater than the 2nd setting (step S700: no), then continue to judge whether the visibility of current vehicle position is less than the 3rd regulation (step S800); Namely judge whether visibility is greater than the 2nd setting 100 meters, little 3rd setting 200 meters.If when judging part 205 judges that the visibility (such as 180 meters) of current vehicle position is less than the 3rd setting (200 meters) (step S800: yes), then vehicle headway information acquiring section 207 (radar installations 103) obtains the vehicle headway information between this car and front vehicles, and detects the current travel speed of this car (step S801) by sensor 106.Such as, whether the vehicle headway that then step S801 obtains is less than the vehicle headway setting corresponding to the 2nd setting ~ the 3rd setting visibility range stored in above-mentioned storage part 213, and whether the travel speed that step S801 obtains is greater than the maximum speed limit setting (step S802) corresponding to the 2nd setting ~ the 3rd setting visibility range stored in above-mentioned storage part 213.If judged result is Ben Che and front vehicles vehicle headway be not less than setting and current driving speed is not more than setting time (step S802: no), then return step S600.On the other hand, if in step S802, when any one in Ben Che and front vehicles vehicle headway, current driving speed does not meet setting (step S802: yes), carry out the process that gives a warning in above-mentioned steps S703.Such as, in the present embodiment, step S801 detects that vehicle headway is 50 meters, current driving speed is 100KM/H, the vehicle headway setting corresponding to the 2nd setting ~ the 3rd setting visibility range stored in above-mentioned storage part 213 is 100 meters, and maximum speed limit setting is 60KM/H.Now, vehicle headway 50 meters is less than setting 50 meters, conforms with the regulations, and meanwhile, current driving speed 100KM/H is greater than regulation maximum travel speed 60KM/H, belongs to the situation of the arbitrary setting do not met in vehicle headway and travel speed.Now, the warning message stored in advance in storage part 213 is called in above-mentioned warning portion 208, control display unit 110 and/or apparatus for processing audio 109, display warning picture as shown in figure 15 " current visibility 180M; be 50M with leading vehicle distance, current vehicle speed is 100Km/H, in order to your safety; the low speed of a motor vehicle of begging to surrender is to below 60Km/H and to keep with leading vehicle distance be more than 100M ", and loudspeaker 111 can be driven to be undertaken warning (step S703) by sound simultaneously.
To sum up, embodiments of the invention are illustrated.But the present invention is not limited to the scope that above-described embodiment describes; anyly be familiar with those skilled in the art in the technical scope disclosed by the present invention; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a guider, has:
Storage part, store map data,
Current location detecting element, detects current location,
Configuration part, destination, setting destination,
Route searching portion, explores the guiding route between above-mentioned current location to above destination,
Route guidance portion, guides to destination along above-mentioned guiding route,
Display part, display comprises the map of current location,
It is characterized in that: also have:
Visibility information acquisition unit, obtains the visibility information comprised in the region of current location,
According to above-mentioned visibility information, judging part, judges whether the visibility of above-mentioned zone is less than setting,
Escape leading portion, detects current location by above-mentioned current location detecting element and is positioned at highway, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned judging part, prompting user leaves highway by the outlet that distance current location is nearest,
Highway is positioned at when above-mentioned current location detecting element detects current location, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned judging part, guiding route between being explored from current location to above-mentioned nearest outlet by above-mentioned route searching portion, and along this guiding route, user is guided to nearest outlet by above-mentioned route guidance portion
When setting destination in advance by above destination configuration part, above-mentioned route searching portion is explored from current location via the above-mentioned guiding route be exported to recently between above destination again in the mode that Ordinary Rd is preferential, and along this guiding route, user is guided to destination by above-mentioned route guidance portion.
2. guider according to claim 1, highway is positioned at when above-mentioned current location detecting element detects current location, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned judging part, detect above-mentioned nearest outlet by above-mentioned escape leading portion and point out position and the title of this outlet, guiding user to be left by this outlet simultaneously.
3. guider according to claim 1 and 2, also has: vehicle headway information acquiring section, obtains this car with range information between front vehicles; Warning portion, highway is positioned at when above-mentioned current location detecting element detects current location, and judge that the visibility of above-mentioned zone is greater than the 1st setting and is less than the 2nd setting by above-mentioned judging part, and when the above-mentioned vehicle headway obtained by above-mentioned vehicle headway information acquiring section is below predetermined distance, give a warning.
4. guider according to claim 1, above-mentioned visibility information acquisition unit is made up of following part: outside vehicle is photographed thus obtain the image acquiring unit of outside vehicle scene image, visibility calculating part that the image processing part processed by the image obtained by above-mentioned image acquiring unit, the data that obtain according to above-mentioned image processing part carry out visibility calculating.
5. guider according to claim 1, above-mentioned visibility information acquisition unit obtains the visibility information in the region comprising current location according to the communication of same external server or the broadcast singal that receives.
6. an air navigation aid, has:
Current location detects step, detects current location;
Step display, display comprises the map of current location;
It is characterized in that: also have:
Visibility information obtaining step, obtains the visibility information comprised in the region of current location;
According to above-mentioned visibility information, determining step, judges whether the visibility of above-mentioned zone is less than setting;
Escape leading step, detect step by above-mentioned current location to detect current location and be positioned at highway, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned determining step, prompting user leaves highway by the outlet that distance current location is nearest;
Route searching step, the guiding route exploring from above-mentioned current location to destination; Route guidance step, guides to destination along above-mentioned guiding route; When above-mentioned determining step judges that the visibility of above-mentioned zone is less than the 1st setting, guiding route between being explored from current location to above-mentioned nearest outlet by above-mentioned route searching step, and along this guiding route, user is guided to nearest outlet by above-mentioned route guidance step;
The destination setting procedure of setting destination, again explored from current location via the above-mentioned guiding route be exported to recently between above destination in the mode that Ordinary Rd is preferential by above-mentioned route searching step, and along this guiding route, user is guided to destination by above-mentioned route guidance step.
7. air navigation aid according to claim 6, detect current location be positioned at highway when being detected step by above-mentioned current location, and when judging that the visibility of above-mentioned zone is less than the 1st setting by above-mentioned determining step, detect above-mentioned nearest outlet by above-mentioned escape leading step and point out position and the title of this outlet, guiding user to be left by this outlet simultaneously.
8. the air navigation aid according to claim 6 or 7, also has: vehicle headway information acquiring step, obtains this car with range information between front vehicles; Warning step, detect current location be positioned at highway when above-mentioned current location detects step, and judge that the visibility of above-mentioned zone is greater than the 1st setting and is less than the 2nd setting by above-mentioned determining step, and when the above-mentioned vehicle headway obtained by above-mentioned vehicle headway information acquiring step is below predetermined distance, give a warning.
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| JP5810843B2 (en) * | 2011-11-02 | 2015-11-11 | アイシン・エィ・ダブリュ株式会社 | Lane guidance display system, method and program |
| US20150310313A1 (en) * | 2012-12-18 | 2015-10-29 | Mitsubishi Electric Corporation | Visibility estimation device, visibility estimation method, and safe driving support system |
| CN104344831B (en) * | 2013-07-23 | 2017-11-14 | 深圳市赛格导航科技股份有限公司 | A kind of navigation system, air navigation aid and navigation terminal for fleeing from current location |
| CN103390351A (en) * | 2013-08-02 | 2013-11-13 | 常州市新科汽车电子有限公司 | Navigation method of time-sharing limited road sections for non-local vehicles |
| CN104697958A (en) * | 2014-07-28 | 2015-06-10 | 魏磊 | Ship control device based on gas analysis |
| CN107402020A (en) * | 2017-07-27 | 2017-11-28 | 广东欧珀移动通信有限公司 | Path planning methods of exhibiting, device, storage medium and mobile terminal |
| CN110027545B (en) * | 2018-01-11 | 2023-03-24 | 阿尔派株式会社 | Driving support device and driving support method |
| CN110689717A (en) * | 2018-07-05 | 2020-01-14 | 上海博泰悦臻网络技术服务有限公司 | Method for adjusting driving behavior and vehicle |
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| CN101231172A (en) * | 2007-01-25 | 2008-07-30 | 乐金电子（昆山）电脑有限公司 | Method for guiding run course of mobile object in guidance system |
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