Summary of the invention
The invention provides a kind of navigation path planning method, this navigation path planning method fundamentally can solve the trip problem of the user of restricted driving vehicle, thus avoids the user of vehicle to be punished.
Navigation path planning method of the present invention is realized by the navigational system being equipped on vehicle, comprises the following steps: judge whether the destination of user's input of vehicle is positioned at forbidden section; When destination is positioned at forbidden section, the user to vehicle gives a warning and inquires the parking lot whether travelled to being positioned near a public traffic station; If the user of vehicle determines to travel to parking lot, then find parking lot within the specific limits and the position in parking lot be set to navigation purpose ground; Road closed to passage segment mark is designated as and evades section; According to navigation purpose ground, evade section, the current location of vehicle and map datum, carry out path planning.
Pass through the present invention, even if the user of vehicle trip purpose be in road closed to passage section time, also a reliable solution can be provided for the user of vehicle, namely, the destination of navigation is set to the parking lot near public traffic station and plans guidance path, thus, can first stop in the parking lot near vehicle drive to public traffic station by the user of vehicle, then take public transport and arrive destination, thus avoid the risk of being punished.In addition, navigation path planning method of the present invention is only the selection providing a kind of trip scheme can avoiding being punished to the user of vehicle, when the user of vehicle does not agree to the parking lot near by vehicle drive to public traffic station, navigation path planning method of the present invention still can give the user of the vehicle path planning providing conventional.
Preferably, parking lot is found by following steps: determine finding the first search radius of at least one public traffic station and the second search radius for finding at least one parking lot; With the current location of vehicle for benchmark, in the first determined region of search radius, search at least one public traffic station; With at least one public traffic station searched for benchmark, in the second determined region of search radius, search at least one parking lot; Show at least one parking lot searched; The parking lot that the user receiving vehicle selects from least one parking lot.
By the present invention, satisfactory parking lot can be found expeditiously.
Preferably, according to by the determined restricted driving rule of the license plate number of vehicle, type, current location and current time and according to Temporary Traffic Control Measures, the forbidden section of vehicle is judged.
By the present invention, in conjunction with the restricted driving rule of various places and Temporary Traffic Control Measures, can effectively judge the forbidden section of vehicle.
Preferably, rule of restricting driving and Temporary Traffic Control Measures are upgraded when the navigational system of vehicle starts by wireless network.
By the present invention, rule of restricting driving can be upgraded in real time, thus can farthest avoid the user of vehicle to be punished.
Preferably, the current location of vehicle and current time are obtained by global position system.
By the present invention, position and the current time of vehicle can be obtained exactly, thus forbidden section can be judged exactly, farthest avoid the user of vehicle to be punished.
Preferably, the second search radius is no more than 1500m.
By the present invention, the user of vehicle does not need the distance that walking is too far away after stopping just can arrive public traffic station, and the user for vehicle saves time and muscle power.
Preferably, when showing at least one parking lot searched, according to the public traffic station that preference is recommended near parking lot to the user of vehicle.
Preferably, preference comprises the shortest time and the least bus change number of times that arrive the destination of the user of vehicle from public traffic station.
By the present invention, suitable parking lot can be recommended according to the preference of user, thus not need user in person to screen from the parking lot of several candidates, for user provides convenience, and save the time.
Preferably, described public traffic station comprises bus stop, subway station, subway station, railway station.
By the present invention, provide the selection of more public transport can to the user of vehicle, thus provide more traffic paths can to the user of vehicle.
Embodiment
Hereinafter, with reference to the accompanying drawings of the preferred embodiment of the present invention.
The navigation path planning method of present embodiment is realized by the navigational system being equipped on vehicle.When the user of vehicle opens the ignition switch of vehicle and starts vehicle, the navigational system energising of vehicle, performs navigation path planning method of the present invention by navigational system.
Fig. 1 is the general flow chart of an example of the navigation path planning method representing present embodiment.The navigation path planning method of present embodiment comprises step below.
In step sl, navigational system, by GPS receiving satellite signal, is carried out the location of vehicle, and is obtained current time.Navigational system, when carrying out the location of vehicle, provides the city (current city) that vehicle is positioned at.
Further, in step sl, navigational system by wireless network upgrade be used for aftermentioned judge vehicle whether by forbidden restricted driving rule and Temporary Traffic Control Measures.Restricted driving rule can be by inter-vehicle information system and intelligent transportation system and by wireless network, and the restricted driving that public transport management Ju Deng official of the such as public security bureau platform of acquisition is issued is regular.Temporary Traffic Control Measures can be obtained from Real-time Traffic Information by wireless network.
In step s 2, navigational system obtains license plate number and the type of vehicle.Navigational system obtains the license plate number of vehicle and the method for type both can be require that the user of vehicle inputs license plate number and the type of vehicle at every turn, also can be from the storage unit of vehicle ECU, obtain the license plate number and type that are stored in vehicle.
In step s3, navigational system, according to the license plate number of vehicle, type, current vehicle position (current city) and current time, judges whether vehicle exists by forbidden section according to restricted driving rule and Temporary Traffic Control Measures.
If the judged result of navigational system is "No", namely there is not forbidden section in step S3, then enter step S13.
In step s 13, the user of navigational system prompting vehicle inputs the destination of vehicle traveling, and receives this destination information.
In step S14, the destination that navigational system travels according to vehicle, the current location of vehicle and map datum carry out path planning.In present embodiment, map datum is pre-stored within vehicle or is obtained by wireless network.
In step S15, the path of having planned is presented on the display of guider by navigational system.
If the judged result of navigational system is "Yes", namely there is forbidden section in step S3, then enter step S4.
In step s 4 which, navigational system gives a warning to the user of vehicle, reminds the user of vehicle to there is forbidden section.In present embodiment, forbidden section based on map, such as, can be overlapped on map by warning, and is shown to the user of vehicle with special color; Warning also can carry out in the mode of voice, namely by voice broadcast to the user of vehicle.
In step s 5, the user of navigational system prompting vehicle inputs the destination of vehicle traveling, and receives this destination information.
In step s 6, the destination that navigational system inputs according to the user of vehicle, judges whether destination is positioned at forbidden section.
If the judged result of navigational system is that "No", i.e. destination are not positioned at forbidden section in step S6, then enter step S16.
In step s 16, road closed to passage segment mark is designated as and evades section by navigational system.
In step S17, the destination that navigational system travels according to vehicle, the current location of vehicle, evade section and map datum carries out path planning.
In step S18, the path of having planned is presented on the display of guider by navigational system.
If the judged result of navigational system is that "Yes", i.e. destination are positioned at forbidden section in step S6, then enter step S7.
In the step s 7, navigational system gives a warning to the user of vehicle, reminds the user destination of vehicle to be positioned at forbidden section, if by vehicle drive to forbidden section, be then faced with the risk of being punished.Meanwhile, whether the user of navigational system inquiry vehicle travels the parking lot to being positioned near public traffic station.In present embodiment, public traffic station comprises bus stop, subway station, subway station, railway station.
In step s 8, navigational system judges whether to travel the parking lot to being positioned near public traffic station according to the selection of the user of vehicle.
If the judged result of navigational system is that the user of "No", i.e. vehicle does not select to travel to parking lot in step S8, that is, the user of vehicle adheres to that steering vehicle is to forbidden section, then enter step S19.
In step S19, the destination that navigational system travels according to vehicle, the current location of vehicle and map datum carry out path planning.
In step S20, the path of having planned is presented on the display of guider by navigational system.
If the judged result of navigational system is that the user of "Yes", i.e. vehicle selects to travel to parking lot in step S8, then enter step S9.
In step s 9, navigational system according to the map data finds satisfactory parking lot, is namely positioned at parking lot near public traffic station in certain scope, and the position in this parking lot is set to navigation purpose ground.Navigational system finds the method in satisfactory parking lot, will describe in detail in ensuing Fig. 2 and Fig. 3.
In step slo, road closed to passage segment mark is designated as and evades section by navigational system.
In step s 11, navigational system according to navigation purpose (position in satisfactory parking lot), vehicle current location, evade section and map datum carries out path planning, guarantee that vehicle is travelling in the path in parking lot, can not enter forbidden section.
In step s 12, the path of having planned is presented on the display of guider by navigational system.
Below, illustrate that navigational system finds the method in the parking lot be positioned near public traffic station with reference to Fig. 2 and Fig. 3.Fig. 2 is the process flow diagram of an example of the method finding the parking lot be positioned near public traffic station.Fig. 3 is the schematic diagram of an example of the method finding the parking lot be positioned near public traffic station.
In step S91, determine the search radius a and the search radius b that find public traffic station and parking lot respectively.Specifically, reference Fig. 3, hunting zone A is centered by the current location of vehicle V, the determined border circular areas of search radius a.Navigational system, within the determined region of search A of search radius a, finds at least one public traffic station.Hunting zone B is centered by least one public traffic station to search out, the determined border circular areas of search radius b.Navigational system, within the determined region of search B of search radius b, finds at least one parking lot.
In step S91, search radius a and search radius b can be the numerical value that the user of vehicle inputs at every turn voluntarily, also can be according to presetting and the numerical value recommended to the user of vehicle of the parameter being stored in vehicle by navigational system.If the user to vehicle recommends by navigational system, then the radius a of the region of search of recommending should in rational scope, and recommend best from the numerical value of less search radius a first, such as 0 ~ 2000m; The search radius b recommended first preferably in the zone of reasonableness not needing the long-time walking of the user of vehicle, such as, is no more than 0 ~ 800m.
In step S92, navigational system for benchmark, searches for the public traffic station of existence with the current location of vehicle V within the determined region of search A of search radius a.
In step S93, navigational system, according to the Search Results in step S92, judges whether there is public traffic station in the A of region of search.If judged result is "Yes", namely there is public traffic station, then enter step S94; If judged result is "No", namely there is not public traffic station, then get back to step S91, reset the numerical value of search radius a.The numerical value resetting search radius a can be inputted the numerical value of a larger search radius a voluntarily by the user of vehicle, or by navigational system such as, according to preset and the parameter being stored in vehicle recommends the numerical value of a larger search radius a to the user of vehicle, 2000 ~ 4000m.If in the step S92 next carried out ~ S93, still do not find public traffic station, then return the numerical value of step S91 setting search radius a large further.
In present embodiment, such as, find four public traffic stations 1,2,3,4, as shown in Figure 3.
In step S94, navigational system respectively with the public traffic station 1,2,3,4 searched for benchmark, within the determined region of search B of search radius b, search for the parking lot of existence.
In step S95, navigational system, according to the Search Results in step S94, judges whether there is parking lot in the B of region of search.If judged result is "Yes", namely there is parking lot, then enter step S96; If judged result is "No", namely there is not parking lot, then get back to step S91, reset the numerical value of search radius a and/or search radius b.The search radius a reset and/or the numerical value of search radius b can be the numerical value being inputted a larger search radius a and/or search radius b by the user of vehicle voluntarily, also can by navigational system according to preset and the parameter being stored in vehicle recommends the numerical value of a larger search radius a and/or search radius b to the user of vehicle, if in the step S94 next carried out ~ S95, still do not find parking lot, then return the numerical value that step S91 sets search radius a large further and/or search radius b.The numerical value of the search radius b preferably recommended by navigational system is maximum is no more than 1500m.
In the present embodiment, six parking lot u, v, w, x, y, z are such as altogether found, as shown in Figure 3.
In step S96, the parking lot u, the v that find, w, x, y, z are overlapped on map by navigational system, and are shown to the user of vehicle with special color.
In addition, when parking lot u, v that navigational system can find in display, w, x, y, z, the public traffic station 1,3,4 calculated near parking lot u, the v of each candidate, w, x, y, z arrives time and the number of transfer of the actual destination of the user of vehicle, and is shown to the user of vehicle.Navigational system can according to the preference of the user of vehicle, and such as " shortest time ", " least bus change " screen the public traffic station of candidate.
In the step s 97, navigational system receive vehicle user to parking lot, according to preference or not according to the selection of preference.
Like this, even if the user of vehicle is when destination is in forbidden section, also first by vehicle drive to parking lot, then destination can be arrived by public transport.
Above preferred enforcement embodiment of the present invention is illustrated, but the invention is not restricted to above-mentioned embodiment, in the scope not departing from thought of the present invention, some distortion and amendment can be made.