JP2008082884A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device capable of searching for a recommended route desirable to a user from a viewpoint of cost effectiveness. <P>SOLUTION: A shortened time when using a highway and a charge per prescribed unit time are calculated by a calculation means (a CPU 11, a calculation program 17b3). When the charge per unit time is calculated by the calculation means, it is discriminated whether the charge per unit time exceeds a threshold or not by a discrimination means (the CPU 11, a discrimination program 17b6), and a prescribed recommended search route is displayed by the second display control means (the CPU 11, the second display control program 17b7), based on the charge per unit time discriminated by the discrimination means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a navigation device.

Conventionally, a navigation device that detects the current position of a vehicle by GPS (Global Positioning System) or autonomous navigation and displays the detected current position of the vehicle on a display screen together with map information is known. .

  In the navigation device, for example, when a route is searched with priority on a toll road, a new route that avoids a toll road included in the searched route is newly searched, and a travel is performed in advance from the original searched route and the avoidance route. There is known a navigation device that defines at least one of a threshold condition relating to time and a threshold condition relating to a travel fee, and determines a route satisfying such a condition as a recommended route (see Patent Document 1).

In addition, the starting point and the destination target point are registered on the map of the navigation system, and a road connecting these two points is designated. A navigation device that learns environmental factors and predicts and displays arrival time and required time is known (see Patent Document 2).
JP 2005-195451 A Japanese Utility Model Publication No. 02-52116

However, in the apparatus disclosed in the above-mentioned Patent Document 1, the threshold is simply determined based on the travel time and the travel fee. Therefore, the travel fee on the determined recommended route is commensurate with the travel time spent. It may not be possible to determine whether or not, depending on the designated route, it may take too much travel time, or it may take too much travel fee.
In addition, the navigation device disclosed in Patent Document 2 has no description about setting a recommended route based on a threshold set by a user, and the above problem cannot be solved.

  An object of the present invention is to provide a navigation device that searches for a recommended route desirable for a user in terms of cost effectiveness.

In order to solve the above-mentioned problem, the invention described in claim 1
Detection means for detecting the current position; map information storage means for storing map information; and display means for displaying the current position detected by the detection means together with the map information stored in the map information storage means. In a navigation device comprising:
Toll storage means for storing toll road / highway tolls;
Search means for searching a route from the departure place to the destination with priority for general roads or highways, input means for inputting the fuel consumption of the vehicle to which the navigation device is attached, and the price of the fuel;
The total of toll road charges based on the travel time, travel distance, and toll storage means based on the route searched by the general road priority by the search means, and the travel time, travel distance of the route searched by the expressway priority, and the above Based on the search route information consisting of the toll road / highway toll based on the charge storage means, the fuel consumption of the vehicle input by the input means, and the fuel price, the cost of fuel for each route is calculated. After adding the cost of fuel for each route to the total toll road fee for the route searched with priority on general roads and the total toll road / highway fee for routes searched with priority on the expressway, Per unit time obtained by dividing the total amount of travel time reduction, toll road / highway toll and fuel costs when using the expressway by the reduction time Calculation means for calculating rates, and the difference in distance traveled by the route of each,
A first display for causing the display means to display a difference between the route searched by the search means, the searched route information, the shortened time calculated by the calculation means, the charge per unit time, and the travel distance. Control means;
Designating means for designating a search route displayed on the display means by the first display control means;
Storage means for storing the charge per unit time calculated by the calculation means as final specified charge information when the specified route specified by the specifying means is a route searched with highway priority;
Threshold setting means for setting a threshold relating to the charge per unit time for selecting a general road or a highway based on the last specified charge information stored in the storage means;
When the charge per unit time is calculated by the calculation means while the threshold is set by the threshold setting means, it is determined whether or not the charge per unit time exceeds the threshold. Discrimination means;
When it is determined by the determining means that the charge per unit time exceeds the threshold value, the search route giving priority to general roads is displayed on the display means as a recommended route, and determined to be equal to or less than the threshold value. A second display control means for displaying, on the display means, a search route prioritized on a highway as a recommended route;
Threshold search means for updating the threshold set by the threshold setting means when a search route other than the recommended route displayed on the display means by the second display control means is designated by a user;
It is characterized by providing.

The invention described in claim 2
Detection means for detecting the current position; map information storage means for storing map information; and display means for displaying the current position detected by the detection means together with the map information stored in the map information storage means. In a navigation device comprising:
Toll storage means for storing toll road / highway tolls;
A search means for searching a route from a departure place to a destination with priority on a general road or a highway;
The total of the travel time of the route searched with priority by the search means and the toll road fee based on the charge storage means, and the travel time of the route searched with priority to the expressway, the toll road based on the charge storage means・ Based on the search route information consisting of the total tolls of the expressway, calculate the reduction in travel time when using the expressway and the charge per unit time by dividing the total amount of toll roads and expressway charges by the shortening time. Calculating means for
A first display control means for displaying the route searched by the search means, the searched route information, the shortened time calculated by the calculation means, and the charge per unit time on the display means;
Designating means for designating a search route displayed on the display means by the first display control means;
When the designated route designated by the designation means is a route searched with priority on an expressway, storage means for storing final designated fee information including the fee per unit time calculated by the calculation means;
Threshold setting means for setting a threshold relating to the charge per unit time for selecting a general road or a highway based on the last specified charge information stored in the storage means;
When the charge per unit time is calculated by the calculation means while the threshold is set by the threshold setting means, it is determined whether or not the charge per unit time exceeds the threshold. Discrimination means;
When it is determined by the determining means that the charge per unit time exceeds the threshold value, the search route giving priority to general roads is displayed on the display means as a recommended route, and determined to be equal to or less than the threshold value. A second display control means for displaying, on the display means, a search route prioritized on a highway as a recommended route;
It is characterized by providing.

The invention according to claim 3 is the invention according to claim 2,
When a search route other than the recommended route displayed on the display unit by the second display control unit is specified by the user, the threshold setting is performed based on a charge per unit time of the specified search route. Threshold update means for updating the threshold set by the means is further provided.

The invention according to claim 4 is the invention according to claim 2 or 3,
The calculation means further calculates a difference in travel distance by each route based on the travel distance of the route searched with priority on general roads and the travel distance of the route searched with priority on highways,
The first display control means further displays the difference in travel distance on the display means,
The storage means further stores the difference in the travel distance.

The invention according to claim 5 is the invention according to any one of claims 2 to 4,
An input means for inputting the fuel consumption of the vehicle in which the navigation device is installed and the price of the fuel;
The calculation means further includes a travel time and a travel distance of the route searched with priority to the general road by the search means, a total of toll road charges based on the charge storage means, and a travel time of the route searched with priority to the expressway. Fuel on each route based on the search route information consisting of the total of toll road / highway toll based on the mileage and the charge storage means, and the fuel consumption and fuel price of the vehicle input by the input means The cost of fuel for each route is calculated based on the total toll road charge for the route searched with priority on general roads and the toll road / highway charge for the route searched with priority on the expressway. In addition, the reduction in travel time when using the expressway and the total amount of toll road / highway toll and fuel costs are reduced. And calculating rates per divided unit time, and the difference in distance traveled by the route of each.

According to the first aspect of the invention, the search means can search the route from the departure place to the destination with priority on the general road or the highway, and the input means of the vehicle on which the navigation device is installed. Fuel consumption and fuel price can be entered. By calculation means, the total of toll road charges based on travel time, distance traveled, and toll storage means searched with priority on general roads, and highway priority search Each route based on the search route information consisting of the toll road / highway toll based on the travel time, travel distance, and charge storage means, and the fuel consumption of the vehicle and the fuel price input by the input means The total toll road charge for the route searched with priority to the general road by calculating the cost of fuel in the road, and the toll road for the route searched with priority to the expressway・ After adding the cost of fuel for each route to the total of the expressway fee, the reduction in travel time when using the expressway, the total amount of toll road / expressway fee and fuel cost The charge per unit time divided by the shortened time and the difference in travel distance by each route can be calculated. The route searched by the search means by the first display control means, the searched route information, and the calculation means The display unit can display the difference between the shortened time, the charge per unit time, and the mileage calculated by the first display control unit, and the search route displayed on the display unit is specified by the specifying unit. If the designated route designated by the designation means is a route searched with priority to the expressway, the storage means can calculate the unit time calculated by the calculation means. Can be stored as final designated fee information, and the threshold setting unit uses the threshold value unit to select a general road or a highway based on the final designated fee information stored in the storage unit. When the charge per unit time is calculated by the calculation means while the threshold is set by the threshold setting means, the charge per unit time exceeds the threshold by the determination means. If it is determined by the determining means that the charge per unit time exceeds the threshold, the second display control means sets the general road priority search route as the recommended route. When it is displayed on the display means and it is determined that it is equal to or less than the threshold value, the second display control means displays the highway priority search route as a recommended route. When a search route other than the recommended route displayed on the display unit by the second display control unit is designated by the user, the threshold set by the threshold setting unit is set by the threshold update unit. Can be updated.
Therefore, when setting a threshold value from the viewpoint of cost effectiveness and selecting whether to use an expressway or a general road, a recommended route can be displayed based on the threshold value, which is desirable for the user. A recommended route can be provided.
In addition, when a search route other than the recommended route is designated by the user, the set threshold value can be updated and learned, and a recommended route more desirable for the user can be searched.
In addition, when selecting whether to use an expressway or a general road, the difference in travel distance can also be used as a determination criterion for selection criteria, so that it is possible to search for a recommended route that is more desirable for the user. it can.
In addition, when selecting whether to use an expressway or a general road, it is possible to consider the cost of fuel in the searched route from the fuel consumption of the user's vehicle, and in terms of cost effectiveness Further, it is possible to search for a recommended route desirable for the user.

According to the second aspect of the present invention, the route from the departure point to the destination can be searched by the general road priority or the expressway priority by the search means, and the route searched by the general road priority by the calculation means. Based on the total of toll road charges based on travel time and toll storage means, and the search route information consisting of the travel time of routes searched with priority to expressways and the sum of toll roads and toll road charges based on toll storage means, It is possible to calculate the travel time when using the expressway and the charge per unit time obtained by dividing the total amount of toll road / highway charge by the shortened time, and search by the first display control means The route searched by the means, the searched route information, the shortened time calculated by the calculation means, and the charge per unit time can be displayed on the display means, The search means displayed on the display means by the first display control means can be specified by the determination means, and when the designated route specified by the specification means is a route searched with priority on the expressway, the calculation is performed by the storage means. The final designated fee information consisting of the fee per unit time calculated by the means can be stored, and the threshold setting means selects a general road or a highway based on the final designated fee information stored in the storage means. A threshold for a charge per unit time can be set, and when the threshold is set by the threshold setting means and the charge per unit time is calculated by the calculating means, the determining means It is possible to determine whether the charge per hour exceeds the threshold, and the charge per unit time exceeds the threshold by the determination means. If the second display control means displays the general route priority search route as the recommended route on the display means, and if it is determined to be equal to or less than the threshold value, the second display control means The highway priority search route can be displayed as a recommended route on the display means.
Therefore, when setting a threshold value from the viewpoint of cost effectiveness and selecting whether to use an expressway or a general road, a recommended route can be displayed based on the threshold value, which is desirable for the user. A recommended route can be provided.

According to the invention described in claim 3, it is needless to say that the same effect as that of the invention described in claim 2 can be obtained, and a searched route other than the recommended route displayed on the display means by the second display control means. However, when designated by the user, the threshold set by the threshold setting means can be updated by the threshold update means based on the charge per unit time of the designated search route.
Therefore, when a search route other than the recommended route is designated by the user, the set threshold value can be updated and learned, and a recommended route more desirable for the user can be searched.

According to the invention described in claim 4, it is needless to say that the same effect as that of the invention described in claim 2 or 3 can be obtained, the travel distance of the route searched with priority to the general road by the calculation means, and the high speed Based on the travel distance of the route searched with priority to the road, the difference in travel distance by each route can be calculated, and the difference in travel distance can be displayed on the display means by the first display control means. By means, the difference in travel distance can be stored.
Therefore, when selecting whether to use an expressway or a general road, the difference in travel distance can also be used as a determination criterion for selection criteria, and a more preferable recommended route for a user can be searched. it can.

According to the invention described in claim 5, it is needless to say that the same effect as in the invention described in any one of claims 2 to 4 can be obtained, and the vehicle in which the navigation device is installed by the input means. The fuel consumption and the fuel price can be input, and the calculation means calculates the travel time and travel distance of the route searched with priority to general roads, and the toll road charge based on the charge storage means, and expressway priority. Based on the travel time of the searched route, the travel distance, and the search route information including the sum of the toll road / highway toll based on the charge storage means, the fuel consumption of the vehicle input by the input means, and the price of the fuel , The total of toll road charges for the route searched with priority on the general road by calculating the cost of fuel on each route, and the toll road for the route searched with priority on the expressway After adding the cost of fuel for each route to the total of the expressway fee, shortening the travel time when using the expressway, and the total amount of toll road / highway fee and fuel cost It is possible to calculate the charge per unit time divided by the time and the difference in travel distance by each route.
Therefore, when selecting whether to use an expressway or a general road, it is possible to consider the cost of fuel in the searched route from the fuel consumption of the user's vehicle. Further, it is possible to search for a recommended route desirable for the user.

  Hereinafter, the best mode of a navigation device according to the present invention will be described in detail with reference to the drawings. The scope of the invention is not limited to the illustrated example.

First, the configuration of the navigation device 1 will be described with reference to FIG.
For example, as shown in FIG. 1, the navigation device 1 includes a CPU (Central Processing Unit) 11, a GPS antenna 12, a power supply unit 13, a display unit 14, an input unit 15, and a RAM (Random Access Memory) 16. And a storage unit 17 and the like. Each unit is connected by a bus 10.

  The CPU 11 performs various control operations according to various processing programs for the navigation device 1 stored in the storage unit 17.

  The GPS antenna 12 receives, for example, GPS signals transmitted from a plurality of GPS satellites launched in a low earth orbit. For example, the GPS antenna 12 receives GPS signals transmitted from at least three GPS satellites, and outputs the received GPS signals to the CPU 11.

  The power supply unit 13 is connected to, for example, a cigarette power supply installed in the vehicle, and operates in conjunction with starting and stopping of the engine.

The display unit 14 is composed of, for example, a liquid crystal display device, and performs predetermined display processing according to a display signal input from the CPU 11.
Specifically, for example, the display unit 14 displays, as display means, the current position P detected by the CPU 11 that executes a detection program 17b1 described later together with map information stored in the map information database 17a1 described later.

The input unit 15 includes, for example, a character / number key, various function keys, a touch panel integrally formed with the display unit 14, and the like, and outputs a press signal associated with the operation to the CPU 11 when operated by the user. . Further, the input unit 15 may be configured to include, for example, a remote controller.
Specifically, for example, when searching for a route from the departure point to the destination, the input unit 15 displays the display by executing a first display control program 17b4 described later when the destination is designated. When designating a search route displayed on the unit 14, when the CPU 11 designates a search route other than the recommended route displayed on the display unit 14 by executing a second display control program 17b7 described later, and a navigation device 1 is operated when inputting the fuel consumption of the vehicle in which the vehicle 1 is installed and the price of the fuel, thereby functioning as a designation unit and an input unit.

  The RAM 16 includes, for example, a program area for expanding a processing program executed by the CPU 11, a data storage area for storing input data, a processing result generated when the processing program is executed, and the like.

  The storage unit 17 includes, for example, a system program that can be executed by the navigation device 1, various processing programs that can be executed by the system program, data that is used when these various processing programs are executed, and processing results that are arithmetically processed by the CPU 11. The data etc. are memorized. The program is stored in the storage unit 17 in the form of a computer readable program code.

  Specifically, for example, as shown in FIG. 1, the storage unit 17 calculates a map information database 17a1, a fee database 17a2, a final designated fee information data table 17a3, a detection program 17b1, a search program 17b2, and a calculation. A program 17b3, a first display control program 17b4, a threshold setting program 17b5, a determination program 17b6, a second display control program 17b7, a threshold update program 17b8, and the like are stored.

  For example, the map information database 17a1 stores, as map information storage means, map information related to a road map for car navigation that expresses a predetermined area (for example, all over Japan).

The charge database 17a2 stores, for example, information on toll road / highway charges throughout Japan.
Specifically, for each road name, a charge from each departure interchange to each arrival interchange, and a charge for each vehicle type such as a small car and a large car are stored.

The final designated fee information data table 17a3 stores, for example, information related to cost effectiveness in a route when a highway is used among routes searched in the past.
Specifically, the final designated fee information data table 17a3 indicates, for example, the total amount of toll road / highway fee when the designated route designated by the input unit 15 is a route searched with highway priority. Information relating to the charge per unit time divided by the shortened time (hereinafter referred to as “charge per unit time”) is stored. Further, when the fuel consumption of the vehicle in which the navigation device 1 is installed and the price of the fuel are input by the input unit 15, the fuel in the route searched with priority on the general road and the route searched with priority on the expressway The cost related to the fuel is calculated, the cost related to the fuel is added, and the information about the charge per unit time is stored.
The storage unit 17 functions as a storage unit by storing the final specified fee information data table 17a3.

The detection program 17b1 is a program that causes the CPU 11 to realize a function of detecting the current position.
Specifically, the CPU 11 executes the detection program 17b1, for example, based on the GPS signal output from the GPS antenna 12, the absolute two-dimensional current position of the vehicle in which the navigation device 1 is installed. P (latitude, longitude) is detected.
The CPU 11 functions as a detection unit by executing the detection program 17b1.

The search program 17b2 is a program that causes the CPU 11 to realize a function of searching for a route to the destination designated by the user.
Specifically, the CPU 11 executes the search program 17b2 to read the search map data from the map information database 17a1, and search for a route from the current position P of the vehicle to the destination corresponding to the specified destination data. Process. In the route search, a route can be searched by setting “general road priority”, “highway priority”, “distance priority”, “time priority”, and the like.
The CPU 11 functions as a search unit by executing the search program 17b2.

The calculation program 17b3 is a program that causes the CPU 11 to realize a function of calculating a numerical value serving as a determination criterion when searching for a recommended route.
Specifically, by executing the calculation program 17b3, the CPU 11 searches for the total travel time, travel distance, and toll road fee based on the toll database 17a2 searched for with priority on general roads, and with highway priority. Travel route, travel distance, and search route information consisting of the total of toll road / highway toll based on the charge database 17a2, and the fuel consumption and fuel price of the vehicle input by the input unit 15, respectively. Fuel for each route is calculated based on the total toll road fee for the route searched with priority on the general road by calculating the cost of fuel on the route, and the total toll road / highway fee for the route searched with priority on the expressway. In addition to the cost of driving, the reduction of travel time when using the expressway, toll road / highway charge and Rates per unit divided by time the total amount of money in a shorter time of the cost of premiums, and to calculate the difference between the distance traveled by the route of each.
More specifically, for example, as shown in FIG. 2, the travel distance of the route searched with priority on the general road is 40 km, the travel distance of the route searched with priority on the expressway is 40 km, and the fuel consumption on each route is 8 km. / L, 10km / l, and the price of fuel is 100 yen per liter, the cost of fuel when traveling on a general road priority search route is 500 yen, while on the expressway priority search route The cost of the fuel is 400 yen. The fuel cost (500 yen) is added to the total toll road charge for the route searched with priority to general roads (0 yen). Similarly, the toll road / highway charge for the route searched with priority to the expressway is added. Add the fuel cost (400 yen) to the total (800 yen), and subtract the total charge (500 yen) of the route searched with priority on general roads from the total charge (1200 yen) of the route searched with priority to expressways The difference in travel fee (700 yen) is obtained, the difference in travel fee (700 yen) is divided by the difference in travel time (20 minutes), and the charge per unit time (35 yen / minute) is calculated.
The CPU 11 functions as a calculation unit by executing the calculation program 17b3.

The first display control program 17b4 is a program that causes the CPU 11 to realize a function of displaying the search result searched for by executing the search program 17b2 on the display unit 14.
Specifically, the CPU 11, by executing the first display control program 17b4, for example, as shown in FIG. 2, the route, travel time, and travel distance searched by the CPU 11 executing the search program 17b2. The total of toll road / highway toll, the shortened time calculated by the CPU 11 executing the calculation program 17b3, the toll per unit time, and the difference in travel distance are displayed on the display unit 14.
The CPU 11 functions as a first display control unit by executing the first display control program 17b4.

The threshold setting program 17b5 is a program that causes the CPU 11 to realize a function of setting a threshold serving as a reference when executing a determination program 17b6 described later.
Specifically, when the final designated fee information of a predetermined number of times or more is stored in the final designated fee information data table 17a3, the CPU 11 executes the threshold setting program 17b5 to thereby store the final designated fee information data table 17a3. The stored average price per unit time is set as a threshold value.
The CPU 11 functions as a threshold setting unit by executing the threshold setting program 17b5.

The discrimination program 17b6 is a program that causes the CPU 11 to realize a function of discriminating which one of the search route with priority to the expressway and the search route with priority to the general road is the recommended route.
Specifically, when the charge per unit time is calculated by executing the calculation program 17b3 while the threshold is set by the CPU 11 executing the threshold setting program 17b5, the CPU 11 determines that the determination program 17b6 Is executed to determine whether or not the charge per unit time exceeds a threshold value.
The CPU 11 functions as a determination unit by executing the determination program 17b6.

The second display control program 17b7 is a program that causes the CPU 11 to realize a function of displaying a recommended route desirable for the user on the display unit 14.
Specifically, when the CPU 11 determines that the charge per unit time exceeds the threshold value by executing the determination program 17b6, the CPU 11 executes the second display control program 17b7 to When the road-first search route is displayed as a recommended route on the display unit 14 and it is determined that the charge per unit time is equal to or less than the threshold, the CPU 11 executes the second display control program 17b7 to thereby express the highway. The priority search route is displayed on the display unit 14 as a recommended route.
More specifically, for example, when the threshold is set to 40 yen / minute, as shown in FIG. 3, the CPU 11 executes the determination program 17b6 to thereby charge per unit time (35 yen / minute). The CPU 11 executes the second display control program 17b7 to display the highway priority search route on the display unit 14 as a recommended route.
The CPU 11 functions as a second display control unit by executing the second display control program 17b7.

The threshold update program 17b8 is a program that causes the CPU 11 to realize a function of updating the threshold set by the CPU 11 executing the threshold setting program 17b5.
Specifically, when a search route other than the recommended route displayed on the display unit 14 is designated by the user by the CPU 11 executing the second display control program 17b7, the CPU 11 executes the threshold update program 17b8. By calculating the average value based on the charge per unit time in the search route specified by the user and the charge per unit time stored in the last specified charge information data table 17a3, the average Set the value as a new threshold.
The CPU 11 functions as a threshold update unit by executing the threshold update program 17b8.

<Recommended route search processing>
Next, processing related to the recommended route search in the navigation device 1 will be described with reference to the flowcharts of FIGS. 5 and 6.

  First, when the navigation apparatus 1 is turned on, the CPU 11 starts executing the detection program 17b1, detects the current position P of the vehicle, and displays the detected current position P on the display unit 14. Perform (step S1). Here, the current position P displayed on the display unit 14 is displayed together with the map information stored in the map information database 17a1.

  Next, in step S2, by specifying the destination by operating the input unit 15 by the user, the CPU 11 executes the search program 17b2 to perform general search from the current position P of the vehicle to the specified destination. Search for routes with priority on roads and routes with priority on expressways.

Next, in step S3, the user operates the input unit 15 to input the fuel consumption and fuel price of the vehicle in which the navigation device 1 is set.
Specifically, the CPU 11 displays a “fuel information input screen” on the display unit 14. In the “fuel information input screen”, the user can input fuel consumption information when driving on a general road and driving on a highway, and the price of fuel per liter by operating the input unit 15 by the user. Yes.

  Next, in step S4, the CPU 11 executes the calculation program 17b3 to calculate a reduction in travel time, a charge per unit time, and a travel distance when the highway is used.

  Next, in step S5, the CPU 11 determines whether or not a threshold is set. If it is determined that the threshold is set (step S5; Yes), the process proceeds to step S6.

  Next, in step S6, the CPU 11 executes the determination program 17b6 to determine whether or not the calculated fee per unit time exceeds a set threshold value.

  Next, when the CPU 11 executes the determination program 17b6 in step S7 and it is determined that the calculated fee per unit time exceeds the set threshold, the CPU 11 executes the second display control program. By executing 17b7, the general road priority search route is displayed as the recommended route on the display unit 14, and when it is determined that the route is equal to or less than the threshold, the CPU 11 executes the second display control program 17b7, The highway priority search route is displayed on the display unit 14 as a recommended route.

  Next, in step S8, the CPU 11 determines whether or not the recommended route displayed in step S7 is designated by the operation of the input unit 15 by the user, and the recommended route is determined by the operation of the input unit 15 by the user. If it is determined that it has been designated (step S8; Yes), the process proceeds to step S9.

  Next, when the CPU 11 determines in step S9 that the recommended route displayed in step S8 is a highway priority search route (step S9; Yes), the process proceeds to step S10, and the CPU 11 determines that the highway priority. Is stored in the final specified fee information data table 17a3, and the process proceeds to step S11. On the other hand, when the CPU 11 determines in step S9 that the recommended route displayed in step S8 is a general road priority search route (step S9; No), the process skips step S10 and proceeds to step S11.

  Next, in step S11, the CPU 11 starts navigation in the designated search route and ends this processing.

  On the other hand, in step S8, the CPU 11 determines whether or not the recommended route displayed in step S7 is designated by the operation of the input unit 15 by the user, and the recommended route is determined by the operation of the input unit 15 by the user. When it is determined that it has not been designated (step S8; No), the process proceeds to step S12.

  Next, in step S12, the CPU 11 determines whether or not a route other than the recommended route is designated by the operation of the input unit 15 by the user. If a route other than the recommended route is designated (step S12; Yes), Proceed to step S13. On the other hand, when a route other than the recommended route is not specified in step S12 (step S12; No), this process ends.

  Next, in step S13, the CPU 11 determines whether or not the search route designated by the user's operation of the input unit 15 is a highway priority route, and the designated route is a highway priority route. In the case (step S13; Yes), the process proceeds to step S14.

  Next, in step S14, the CPU 11 executes the threshold update program 17b8 and proceeds to step S10.

  On the other hand, when the designated route is not the expressway priority route at step S13 (step S13; No), the process proceeds to step S11, and the CPU 11 starts navigation on the designated search route and ends this processing. To do.

  On the other hand, when the CPU 11 determines in step S5 that the threshold is not set (step S5; No), the process proceeds to step S15.

  Next, in step S15, the CPU 11 executes the first display control program 17b4, and displays the general road priority search route, the expressway priority search route, and the like searched by the CPU 11 executing the search program 17b2. Displayed on the unit 14.

  Next, in step S16, the CPU 11 determines which one of the search routes displayed in step S15 has been selected, and the search route giving priority to the expressway is designated by the operation of the input unit 15 by the user. If it is determined (step S16; highway priority), the process proceeds to step S17. On the other hand, if a general road priority search route is specified (step S16; general road priority), the process proceeds to step S11.

  Next, in step S17, the CPU 11 stores the final designated fee information on the expressway priority search route in the final designated fee information data table 17a3, and proceeds to step S18.

  Next, in step S18, the CPU 11 determines whether or not the final designated fee information has been stored a predetermined number of times or more. If it is determined that the predetermined specified number of times or more has been stored (step S18; Yes), the process proceeds to step S19. On the other hand, if it is determined in step S18 that the last specified fee information has not been stored a predetermined number of times (step S18; No), the process proceeds to step S11.

  Next, in step S19, the CPU 11 executes the threshold value setting program 17b5 to set the average value of charges per unit time stored in the final specified charge information data table 17a3 as a threshold value, and then proceeds to step S11.

According to the navigation device 1 according to the present invention described above, the CPU 11 can search the route from the departure point to the destination with priority to the general road or the highway by executing the search program 17b2. The fuel consumption of the vehicle in which the navigation device is installed and the price of the fuel can be input by the unit 15, and the CPU 11 executes the calculation program 17b3 to thereby calculate the travel time and travel distance of the route searched with priority on the general road. , And the total toll road fee based on the toll database 17a2, the travel time and distance of the route searched with priority to the expressway, and the searched route information consisting of the sum of the toll road / toll road toll based on the toll database 17a2, and Based on the fuel consumption of the vehicle input by the input unit 15 and the price of the fuel, the husband The total cost of the toll road for the route searched with priority to the general road by calculating the cost of fuel for the route and the sum of the toll road / toll freeway for the route searched with priority for the expressway After adding the cost of fuel, the reduction in travel time when using the expressway, the charge per unit time divided by the total time of toll road / highway toll and fuel costs, and The difference in travel distance by each route can be calculated, and when the CPU 11 executes the first display control program 17b4, the route searched by the execution of the search program 17b2, the search route information, and the calculation program 17b3 The display unit 14 can display the difference between the shortened time, the charge per unit time, and the mileage calculated by executing The search route displayed on the display unit 14 by the execution of the first display control program 17b4 can be designated by the input unit 15, and the designated route designated by the input unit 15 is a route searched for with highway priority. In this case, the charge per unit time calculated by the execution of the calculation program 17b3 can be stored as the final specified charge information by the final specified charge information data table 17a3, and the CPU 11 executes the threshold setting program 17b5, thereby Based on the final designated fee information stored in the final designated fee information data table 17a3, a threshold relating to a fee per unit time for selecting a general road or an expressway can be set, and by executing the threshold setting program 17b5 With the threshold set, the calculation program 17b3 When the charge per unit time is calculated by executing the above, the CPU 11 can determine whether the charge per unit time exceeds the threshold by executing the determination program 17b6. When it is determined by the execution of the program 17b6 that the charge per unit time exceeds the threshold value, the second display control program 17b7 is executed to display the general road priority search route as the recommended route on the display unit 14. If it is displayed and determined to be less than or equal to the threshold value, the second display control program 17b7 can be executed to display the highway priority search route on the display unit 14 as the recommended route. A search route other than the recommended route displayed on the display unit 14 by the execution of the control program 17b7 is determined by the user. If it is a constant, CPU 11 that executes the threshold update 17b8, it is possible to update the set threshold by executing the threshold value setting program 17B5.
Therefore, when setting a threshold value from the viewpoint of cost effectiveness and selecting whether to use an expressway or a general road, a recommended route can be displayed based on the threshold value, which is desirable for the user. A recommended route can be provided.
Further, when a search route other than the recommended route is designated by the user, the set threshold value can be updated and learned, and a more preferable recommended route for the user can be searched.
In addition, when selecting whether to use an expressway or a general road, the difference in travel distance can also be used as a determination criterion for selection criteria, so that it is possible to search for a recommended route that is more desirable for the user. it can.
In addition, when selecting whether to use an expressway or a general road, it is possible to consider the cost of fuel in the searched route from the fuel consumption of the user's vehicle, and in terms of cost effectiveness Further, it is possible to search for a recommended route desirable for the user.

The present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, the charge per unit time as the threshold may be designed such that it can be arbitrarily set by the user on the input screen as shown in FIG.
In addition, fuel efficiency information can be entered on the “Fuel Information Input Screen”, where “vehicle type” can be entered, and the fuel efficiency when driving on a general road and driving on an expressway automatically depending on the input “vehicle type”. The design may be such that information is input. In this case, the navigation device 1 needs to include a vehicle type fuel consumption information database or the like in the storage unit 17.
Further, the calculation means, when calculating the charge per unit time in consideration of the cost of fuel, further allows the user to input whether or not to use the air conditioner while traveling to the destination. The design may be such that the fuel consumption information input by the input means is corrected depending on whether or not it is used.

It is a block diagram which shows the principal part structure of the navigation apparatus concerning this invention. It is a figure which shows the example of a display by execution of the 1st display control program in this invention. It is a figure which shows the example of a display by execution of the 2nd display control program in this invention. It is a figure which shows the input screen regarding the threshold value setting in this invention. It is a flowchart which shows the process regarding the recommended route search in this invention. It is a flowchart which shows the process regarding the recommended route search in this invention.

Explanation of symbols

1 navigation device 11 CPU (detection means, search means, calculation means, first display control means, threshold setting means, determination means, second display control means, threshold update means)
12 GPS antenna 13 Power supply unit 14 Display unit (display means)
15 Input section (designating means, input means)
16 RAM
17 storage unit 17a1 map information database (map information storage means)
17a2 Fee database (fee storage means)
17a3 Final designated charge information data table (storage means)
17b1 detection program (detection means)
17b2 Search program (search means)
17b3 calculation program (calculation means)
17b4 first display control program (first display control means)
17b5 Threshold setting program (threshold setting means)
17b6 discrimination program (discrimination means)
17b7 second display control program (second display control means)
17b8 Threshold update program (threshold update means)

Claims (5)

Detection means for detecting the current position; map information storage means for storing map information; and display means for displaying the current position detected by the detection means together with the map information stored in the map information storage means. In a navigation device comprising:
Toll storage means for storing toll road / highway tolls;
Search means for searching a route from the departure place to the destination with priority for general roads or highways, input means for inputting the fuel consumption of the vehicle to which the navigation device is attached, and the price of the fuel;
The total of toll road charges based on the travel time, travel distance, and toll storage means based on the route searched by the general road priority by the search means, and the travel time, travel distance of the route searched by the expressway priority, and the above Based on the search route information consisting of the toll road / highway toll based on the charge storage means, the fuel consumption of the vehicle input by the input means, and the fuel price, the cost of fuel for each route is calculated. After adding the cost of fuel for each route to the total toll road fee for the route searched with priority on general roads and the total toll road / highway fee for routes searched with priority on the expressway, Per unit time obtained by dividing the total amount of travel time reduction, toll road / highway toll and fuel costs when using the expressway by the reduction time Calculation means for calculating rates, and the difference in distance traveled by the route of each,
A first display for causing the display means to display a difference between the route searched by the search means, the searched route information, the shortened time calculated by the calculation means, the charge per unit time, and the travel distance. Control means;
Designating means for designating a search route displayed on the display means by the first display control means;
Storage means for storing the charge per unit time calculated by the calculation means as final specified charge information when the specified route specified by the specifying means is a route searched with highway priority;
Threshold setting means for setting a threshold relating to the charge per unit time for selecting a general road or a highway based on the last specified charge information stored in the storage means;
When the charge per unit time is calculated by the calculation means while the threshold is set by the threshold setting means, it is determined whether or not the charge per unit time exceeds the threshold. Discrimination means;
When it is determined by the determining means that the charge per unit time exceeds the threshold value, the search route giving priority to general roads is displayed on the display means as a recommended route, and determined to be equal to or less than the threshold value. A second display control means for displaying, on the display means, a search route prioritized on a highway as a recommended route;
Threshold search means for updating the threshold set by the threshold setting means when a search route other than the recommended route displayed on the display means by the second display control means is designated by a user;
A navigation device comprising: Detection means for detecting the current position; map information storage means for storing map information; and display means for displaying the current position detected by the detection means together with the map information stored in the map information storage means. In a navigation device comprising:
Toll storage means for storing toll road / highway tolls;
A search means for searching a route from a departure place to a destination with priority on a general road or a highway;
By the search means, the travel time of the route searched with priority to the general road, and the total of the toll road fee based on the charge storage means, the travel time of the route searched with priority to the expressway, and the charge based on the charge storage means Based on the search route information consisting of the total of road and expressway charges, the calculation time is calculated by reducing the travel time when using the expressway and the total amount of toll road and expressway charges divided by the shortened time. Calculating means for
A first display control means for displaying the route searched by the search means, the searched route information, the shortened time calculated by the calculation means, and the charge per unit time on the display means;
Designating means for designating a search route displayed on the display means by the first display control means;
When the designated route designated by the designation means is a route searched with priority on an expressway, storage means for storing final designated fee information including the fee per unit time calculated by the calculation means;
Threshold setting means for setting a threshold relating to the charge per unit time for selecting a general road or a highway based on the last specified charge information stored in the storage means;
When the charge per unit time is calculated by the calculation means while the threshold is set by the threshold setting means, it is determined whether or not the charge per unit time exceeds the threshold. Discrimination means;
When it is determined by the determining means that the charge per unit time exceeds the threshold value, the search route giving priority to general roads is displayed on the display means as a recommended route, and determined to be equal to or less than the threshold value. A second display control means for displaying, on the display means, a search route prioritized on a highway as a recommended route;
A navigation device comprising: The navigation device according to claim 2, wherein
When a search route other than the recommended route displayed on the display unit by the second display control unit is specified by the user, the threshold setting is performed based on a charge per unit time of the specified search route. A navigation apparatus comprising threshold value updating means for updating the threshold value set by the means. The navigation device according to claim 2 or 3,
The calculation means further calculates a difference in travel distance by each route based on the travel distance of the route searched with priority on general roads and the travel distance of the route searched with priority on highways,
The first display control means further displays the difference in travel distance on the display means,
The storage device further stores a difference in the travel distance. In the navigation apparatus as described in any one of Claims 2-4,
An input means for inputting the fuel consumption of the vehicle in which the navigation device is installed and the price of the fuel;
The calculation means further includes a travel time and a travel distance of the route searched with priority to the general road by the search means, a total of toll road charges based on the charge storage means, and a travel time of the route searched with priority to the expressway. Fuel on each route based on the search route information consisting of the total of toll road / highway toll based on the mileage and the charge storage means, and the fuel consumption and fuel price of the vehicle input by the input means The cost of fuel for each route is calculated based on the total toll road charge for the route searched with priority on general roads and the toll road / highway charge for the route searched with priority on the expressway. In addition, the reduction in travel time when using the expressway and the total amount of toll road / highway toll and fuel costs are reduced. Price per divided unit time, and a navigation device and calculates the difference in distance traveled by the route of each.

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