JP5584054B2 - NAVIGATION DEVICE, NAVIGATION METHOD, COMPUTER PROGRAM FOR EXECUTING NAVIGATION METHOD, AND RECORDING MEDIUM CONTAINING THE COMPUTER PROGRAM - Google Patents

Description

  The present invention intends to reflect information on sunshine and information on stagnant elements of a traveling vehicle in route guidance by a navigation system.

In recent years, eco-driving that saves energy consumption has been recommended because of increased awareness of energy conservation and consideration for environmental protection. As means for executing the eco-drive, for example, the use of an air conditioner in the vehicle is refrained, or in the case of a vehicle equipped with a solar cell, battery charging is performed during traveling.
In order to enable such eco-driving, Patent Document 1 discloses a navigation device capable of searching for a route that can avoid direct sunlight as much as possible in consideration of whether a road is shaded. .
In addition, a technique related to a vehicle route guidance device capable of guiding a route with a large amount of sunlight irradiation to a vehicle that requires sunlight has also been proposed (Patent Document 2).
See also Patent Documents 3 to 6 disclosing the prior art related to the present invention.

JP 2004-226199 A JP 2000-353295 A JP 2008-089570 A JP 2009-248692 A JP 2007-225578 A JP 2008-275491 A

The inventors of the present invention have made extensive studies to enable more practical route search that reflects sunshine information. As a result, the following issues were found.
In the above prior art, the degree to which the road is likely to be shaded or the degree of sunlight irradiation to the road surface is used for route search as shade cost or sunshine cost, respectively. However, even for roads with similar illuminance, there are vehicles that travel on roads that contain factors that are likely to stagnate, such as low speed limits, temporary stops, and traffic jams. The time to receive sunlight is different from a vehicle traveling on a non-road. That is, the amount of sunlight is different between the two vehicles.
Therefore, in the present invention, the sunshine information is reflected more practically by considering not only the sunshine information related to the irradiation condition of the sunlight on the road but also the stagnation element information related to the above-mentioned factors that are likely to stagnate during the route search. With the goal.

The present invention has been made to achieve such an object, and the first aspect thereof is defined as follows. That is,
A navigation device including a search unit that searches for a route from a departure place to a destination according to a predetermined rule,
A sunshine cost generator that generates sunshine costs based on sunshine information and stagnation element information;
A total cost calculation unit that calculates a total cost based on the basic cost set in association with the sunshine cost and map information,
The search unit determines a route with reference to the total cost;
A navigation device characterized by that.

According to the navigation device of the first aspect defined as described above, the total cost referred to when searching for a route includes the sunshine cost generated in consideration of the sunshine information and the stagnation element information in addition to the basic cost. As described above, the sunshine cost is generated in consideration of not only information (sunshine information) regarding the irradiation state of sunlight on the road but also information (stagnation element information) regarding the factors that the road is likely to stagnate. For example, since the time (sunshine amount) during which sunlight is received can be taken into account, it is possible to improve the accuracy when reflecting the sunshine information in the route search.
Here, the sunshine information refers to information representing the solar radiation state of sunlight at the link, information such as the presence or absence of solar radiation on the road may be associated with the link in advance, and the area between the departure place and the destination Nearby weather information may be synchronized.
Further, the stagnation element information refers to, for example, information related to elements that are likely to stagnate given to a link or the like, and includes, for example, traffic signal information, temporary stop information, speed limit information, traffic jam information, and the like (second phase).

The third aspect of the present invention is defined as follows. That is,
In the navigation device defined in the first or second aspect, comprising a mode selection unit capable of selecting a mode relating to the first sunshine state and a mode relating to the second sunshine state,
The sunshine cost generation unit adjusts the sunshine information and stagnation element information based on the mode selected by the mode selection unit to generate the sunshine cost.
According to the navigation device of the third aspect defined as described above, the navigation device of the third aspect further includes a mode selection unit that can select a desired sunshine state, and a sunshine cost generation unit that generates a sunshine cost based on the selected mode. . With such a navigation device, not only a route search based on a predetermined sunshine state but also a route search considering a desired sunshine state can be performed. Moreover, since the sunshine cost generated by reflecting the selected mode is used, a desired sunshine state can be reflected more practically in the route search.

The navigation device further includes a temperature comparison unit (fourth aspect) that compares the cabin temperature and the outside air temperature, and a battery remaining amount detection unit (fifth aspect) that detects the remaining battery level of the vehicle. May be. According to the navigation apparatus of the 4th situation provided with the temperature comparison part, the said mode will be selected automatically based on the comparison result of a temperature comparison part. For example, the comparison result of the temperature comparison unit is compared with a predetermined condition (for example, a condition in which it is determined that cooling is used), and when the condition is satisfied, a mode in which shade is welcomed is automatically selected.
On the other hand, according to the navigation apparatus of the 5th situation provided with the battery remaining charge detection part, the said mode will be selected automatically based on the detection result of a battery remaining charge detection part. That is, when the detection result of the battery remaining amount detection unit is equal to or less than a predetermined value, the mode that welcomes the sun as the mode relating to the first sunshine state is automatically selected. In this way, if the mode that welcomes the sun or the shade is automatically selected according to the comparison result or detection result, eco-driving can be performed without bothering the user and without hindering driving. Can be done.
Further, depending on the detection result of the remaining battery level detection unit, it may be better to prioritize battery charging than travel distance or travel time, such as when the remaining battery level is extremely low.

Therefore, the sixth aspect of the present invention is defined as follows. That is,
The navigation device defined in the fifth aspect further comprises a total cost recalculation unit that recalculates the total cost,
The total cost recalculation unit calculates a recalculation total cost that reflects the influence of the basic cost small and / or largely reflects the influence of the sunshine cost,
The search unit determines a route with reference to the recalculation total cost.
According to the navigation device of the sixth aspect defined as described above, when the remaining battery level is equal to or less than a predetermined value based on the detection result of the remaining battery level detection unit, the total cost is recalculated so that the remaining battery level increases. Can do. For this reason, the battery can be charged more effectively and forcibly, and the user can drive with confidence without worrying about the remaining battery level.

The seventh aspect of the present invention is defined as follows. That is,
A navigation method comprising a search step for searching for a route from a departure place to a destination according to a predetermined rule,
A sunshine cost generation step for generating a sunshine cost based on the sunshine information and the stagnation element information;
A total cost calculating step for calculating a total cost based on a basic cost set in association with the sunshine cost and map information, and
The searching step determines a route with reference to the total cost.
A navigation method characterized by that.
According to the seventh aspect of the invention thus defined, the same effect as the first aspect can be obtained.

The eighth aspect of the present invention is defined as follows. That is,
In the navigation method defined in the seventh aspect, the stagnation element information includes traffic signal information, pause information, speed limit information, and traffic jam information.
According to the invention defined in the eighth aspect defined in this manner, the same effects as in the second aspect are achieved.

The ninth aspect of the present invention is defined as follows. That is,
In the navigation method defined in the seventh or eighth aspect, comprising a mode selection step capable of selecting a mode relating to the first sunshine state and a mode relating to the second sunshine state,
In the sunshine cost generation step, the sunshine cost is generated by adjusting the sunshine information and the stagnation element information based on the mode selected in the mode selection step.
According to the invention defined in the eighth aspect defined in this manner, the same effects as in the third aspect are achieved.

The tenth aspect of the present invention is defined as follows. That is,
The navigation method defined in the ninth aspect further comprises a temperature comparison step of comparing the passenger compartment temperature and the outside air temperature,
The mode selection step selects the mode based on the comparison result of the temperature comparison step.
According to the invention defined in the tenth aspect defined in this manner, the same effects as in the fourth aspect are achieved.

The eleventh aspect of the present invention is defined as follows. That is,
In the navigation method defined in the ninth aspect, the method further comprises a remaining battery level detecting step for detecting the remaining battery level of the vehicle,
When the detected remaining battery level is equal to or less than a predetermined value, the mode selection step selects a sunshine welcome mode as a mode relating to the first sunshine state.
According to the invention defined in the eleventh aspect defined in this manner, the same effects as in the fifth aspect are achieved.

The twelfth aspect of the present invention is defined as follows. That is,
The navigation method defined in the eleventh aspect further comprises a total cost recalculation step of recalculating the total cost,
The total cost recalculation step calculates a recalculation total cost that reflects the influence of the basic cost and / or largely reflects the influence of the sunshine cost,
In the search step, a route is determined with reference to the total cost of recalculation.
According to the invention defined in the twelfth aspect defined in this way, the same effects as in the sixth aspect are achieved.

Furthermore, the thirteenth aspect of the present invention is defined as follows. That is,
A computer program for navigating a computer,
Search means for searching for a route from the departure place to the destination according to a predetermined rule;
Sunshine cost generation means for generating sunshine costs based on sunshine information and stagnation element information;
A total cost calculating means for calculating a total cost based on the basic cost set in association with the sunshine cost and the map information,
The search means determines a route with reference to the total cost.
A computer program characterized by the above.
According to the thirteenth aspect of the invention thus defined, the same effects as those of the first aspect can be achieved.

The fourteenth aspect of the present invention is defined as follows. That is,
In the computer program defined in the thirteenth aspect, the stagnation element information includes traffic signal information, temporary stop information, speed limit information, and traffic jam information.
According to the invention defined in the fourteenth aspect defined in this manner, the same effects as in the second aspect are achieved.

The fifteenth aspect of the present invention is defined as follows. That is,
In the computer program defined in the thirteenth or fourteenth aspect, the computer further comprises:
A mode selection means capable of selecting a mode related to the first sunshine state and a mode related to the second sunshine state;
The sunshine cost generation means adjusts the sunshine information and stagnation element information based on the mode selected by the mode selection means to generate the sunshine cost.
According to the invention defined in the fifteenth aspect defined in this manner, the same effects as in the third aspect are achieved.

The sixteenth aspect of the present invention is defined as follows. That is,
A computer program defined in the fifteenth aspect, further comprising:
It functions as a temperature comparison means that compares the passenger compartment temperature and the outside air temperature,
The mode selection means selects the mode based on the comparison result of the temperature comparison means.
According to the invention defined in the sixteenth aspect defined in this manner, the same effects as in the fourth aspect are achieved.

The seventeenth aspect of the present invention is defined as follows. That is,
A computer program defined in the fifteenth aspect, further comprising:
Function as a battery remaining amount detection means for detecting the remaining battery amount of the vehicle,
When the detected remaining battery level is less than or equal to a predetermined value, the mode selection means selects a sunshine welcome mode as a mode relating to the first sunshine state.
According to the invention defined in the seventeenth aspect defined in this manner, the same effects as in the fifth aspect are achieved.

The eighteenth aspect of the present invention is defined as follows. That is,
A computer program defined in the seventeenth aspect, further comprising:
Function as total cost recalculation means for recalculating the total cost,
The total cost recalculation means calculates a recalculation total cost that reflects the influence of the basic cost and / or largely reflects the influence of the sunshine cost,
The search means determines a route with reference to the total cost of recalculation.
According to the invention defined in the eighteenth aspect defined in this manner, the same effects as in the sixth aspect are achieved.

  A recording medium for recording a computer program defined in any of the thirteenth to eighteenth aspects is defined as a nineteenth aspect.

It is a block diagram which shows the structure of the navigation apparatus of embodiment of this invention. It is a block diagram which shows the detailed structure of the sunshine cost production | generation part of embodiment of this invention. It is a flowchart which shows operation | movement of the navigation apparatus of other embodiment of this invention. It is a block diagram which shows the structure of the navigation apparatus of other embodiment of this invention. It is a block diagram which shows the detailed structure of the sunshine cost production | generation part of other embodiment of this invention. It is a block diagram which shows the structure of the navigation apparatus of other embodiment of this invention. It is a block diagram which shows the structure of the navigation apparatus of other embodiment of this invention. It is a block diagram which shows the detailed structure of the cost correction | amendment part of other embodiment of this invention. It is a block diagram which shows the structure of the navigation apparatus of the Example of this invention.

A navigation device according to an embodiment of the present invention will be described.
FIG. 1 shows a schematic configuration of a navigation apparatus 1 according to an embodiment of the present invention.
As shown in FIG. 1, the navigation device 1 includes a sunshine information storage unit 3, a stagnation element information storage unit 5, a sunshine cost generation unit 7, a sunshine cost storage unit 9, a basic cost storage unit 11, a total cost calculation unit 13, A total cost storage unit 15 and a search unit 17 are provided.
The navigation device 1 may be a navigation device that guides a sunny welcome route that better receives sunlight, or a navigation device that better guides a shaded welcome route that avoids sunlight. good. This embodiment will be described below as a navigation device 1 for guiding the Hinata welcome route.

  The sunshine information storage unit 3 stores sunshine information in association with information such as links. The sunshine information is not particularly limited as long as it is information representing the solar radiation state on the road or the like corresponding to the link, and includes, for example, information on the presence or absence of sunshine on the road. The sunshine information is preferably associated with information on the season and time, and direction information on the direction of the road. Furthermore, depending on the surrounding situation such as the presence of a building near the road, It is preferable to provide information such as that is difficult to be irradiated. This is because whether a road or the like is irradiated with sunlight depends on the season, time, and direction of the road. Further, if there are buildings near the road or tunnels on the road, it is impossible to irradiate the road with sunlight. The sunshine information described above may be obtained by calculating from information such as weather information and buildings, or may be obtained from probe information. The sunshine information storage unit 3 may store the sunshine information prepared as described above, and the weather information in the vicinity of the area between the departure point and the destination may be synchronized.

The stagnation element information storage unit 5 stores stagnation element information. The stagnation element information is not particularly limited as long as it is information related to the cause of stopping, stagnation, or congestion of vehicles traveling on roads or vehicles turning right and left at intersections. For example, speed limit information and pause information attached to links Traffic information, traffic signal information (particularly information regarding traffic signals with a high probability of stopping), and the like. Such information can be obtained from predetermined road information, traffic regulation information, probe information, VICS information, and the like.
The sunshine cost generation unit 7 refers to the sunshine information storage unit 3 and the stagnation element information storage unit 5 and generates a sunshine cost for each link and node based on a predetermined rule.

The detailed configuration of the sunshine cost generation unit 7 will be described with reference to FIG. The sunshine cost generation unit 7 includes a first element setting unit 71, a first element storage unit 73, a second element setting unit 75, a second element storage unit 77, and a cost generation unit 79.
The first element setting unit 71 refers to the sunshine information storage unit 3 and sets a first element related to sunshine information. For example, “0” can be set when the sunshine information is “with sunshine”, and “1” can be set when the sunshine information is “without sunshine”. The first element is not limited to such a setting method and can be set as appropriate. The set first element is stored in the first element storage unit 73.

  The second element setting unit 75 refers to the stagnation element information storage unit 5 and sets a second element related to stagnation element information. For example, “1” can be set when the stagnation element information is “with stagnation element information”, and “0” can be set when “no stagnation element information”. The second element is not limited to such a setting method and can be set as appropriate. As another example, the second element can be weighted according to the type of stagnation element information. In this case, according to the degree of stagnation, for example, “4” for “traffic congestion information”, “3” for “traffic information with high probability of stop”, “2” for “information for speed limit 30 km / h or less”, “ The “pause information” can be set to “1”. The set second element is stored in the second element storage unit 77.

  The cost generation unit 79 generates a sunshine cost based on the first element and the second element set as described above. The generation method is not particularly limited as long as both factors can be considered. As an example for better reflecting the sunshine environment in the sunshine cost, for example, when “0” is set as “with sunshine” in the first element setting unit 71, the sunshine cost is set to “0” as it is. The sunshine cost when “1” is set as “no sunshine” can be generated by multiplying the “1” by the value set by the second element setting unit 77. The generated sunshine cost is stored in the sunshine cost storage unit 9 in association with the link information. Further, when “-1” is set as “with sunshine” and “1” is set as “without sunshine” in the first element setting unit 71, the second element setting unit 77 sets any of the first elements. The sunshine cost may be generated by multiplying the set value. In this case, the sunshine cost in the case of “with sunshine” and “with stagnation element” is reduced, and the search unit 17 can search for a route that tends to have a longer time (sunshine amount) for receiving sunlight. .

Returning to FIG. 1, the basic cost storage unit 11 includes the cost information corresponding to the characteristics of the nodes and links attached to each node information and each link information stored in the map information storage unit described later. As stored. Examples of the characteristics of the nodes and links include distance, required time, road type, road width, number of lanes, travel regulation, and the like.
The total cost calculation unit 13 refers to the sunshine cost storage unit 9 and the basic cost storage unit 11, and calculates the total cost by adding both costs for each link and node. The calculated total cost is stored in the total cost storage unit 15 in association with the link information.
The search unit 17 reads map information stored in a map information storage unit, which will be described later, and searches for a route with reference to total cost information stored in the total cost storage unit 15. The route with the smallest route cost information is recommended and becomes the Hinata welcome route.

The operation of the navigation device 1 shown in FIGS. 1 and 2 will be described with reference to FIG.
First, in step 1, the first element is set based on the sunshine information stored in the sunshine information storage unit 3 and stored in the storage unit 73. Next, in step 2, the second element is set based on the stagnation element information stored in the stagnation element information storage unit 5 and stored in the storage unit 77.
In subsequent step 5, a sunshine cost is generated based on the first element and the second element set in step 1 and step 3 and stored in the sunshine cost storage unit 9. Based on the sunshine cost generated in step 5 and the basic cost stored in the basic cost storage unit 11, the total cost is calculated and stored in the total cost storage unit 15 (step 7).
The total cost calculated in step 7 is referred to when searching for a route in the search unit 17, and a route that better receives sunlight irradiation is determined (step 9).

FIG. 4 shows a navigation device 20 according to another embodiment. 4, the same elements as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is partially omitted.
In the navigation apparatus 20 shown in FIG. 4, the navigation apparatus 1 shown in FIG. 1 further includes a mode selection unit 21, and includes a sunshine cost generation unit 23 instead of the sunshine cost generation unit 7.
The mode selection unit 21 selects a requested mode from among a mode related to the first sunshine state and a mode related to the second sunshine state. For example, the sun welcome mode can be set as the mode relating to the first sunshine state, and the shade welcome mode can be set as the mode relating to the second sunshine state. The number of the modes is not limited to two and can be set as appropriate. Further, the mode can be selected based on a signal from an input unit (described later) by the user. Furthermore, when the navigation device includes a temperature comparison unit, a battery remaining amount detection unit, and the like, which will be described later, it is possible to automatically select a mode based on the comparison result by the comparison unit and the detection result by the detection unit. By providing the mode selection unit 21 as described above, it is possible to perform route guidance reflecting a desired sunshine state according to a user's desire or a vehicle situation.

The sunshine cost generation unit 23 includes a first element setting unit 71, a first element storage unit 73, a second element setting unit 75, a second element storage unit 77, a coefficient setting unit 25, and a cost generation unit 27.
The coefficient setting unit 25 sets coefficients to be applied to the first element and the second element constituting the sunshine cost based on the mode selected by the mode selection unit 21. The coefficient setting unit 25 includes a first coefficient setting unit 251 and a second coefficient setting unit 253. The number of coefficient setting units provided in the coefficient setting unit 25 is appropriately provided corresponding to the number of modes set by the mode selection unit 21.
The first coefficient setting unit 251 sets a coefficient to be applied to the first element set by the first element setting unit 71 in accordance with the mode selected by the mode selection unit 21. For example, when the sun welcome mode is selected in the mode selection unit 21, the first coefficient setting unit 251 sets a positive coefficient based on the signal. A value obtained by multiplying the set coefficient by the first factor is used to generate the sunshine cost. If the coefficient is set to a large value, the difference between the elements of “with sunshine” and “without sunshine” becomes large, which is preferable when performing route search that places importance on sunshine costs. In addition, the first coefficient setting unit 251 resets the first element set by the first element setting unit 71 as “−5” as “with sunshine” and “5” as “without sunshine”. May be. On the other hand, when the shade welcome mode is selected, based on the signal, the first coefficient setting unit 251 sets a negative coefficient or sets “5” as “with sunshine” and “−5” as “without sunshine”. Thus, the second element can be reset.

The second coefficient setting unit 253 sets a coefficient to be applied to the second element set by the second element setting unit 73 corresponding to the mode selected by the mode selection unit 21. For example, when the sun welcome mode is selected in the mode selection unit 21, the second coefficient setting unit 251 sets a positive coefficient based on the signal. A value obtained by multiplying the set coefficient by the second factor is used to generate the sunshine cost. Further, the second coefficient setting unit 253 may reset the second element set by the second element setting unit 73.
As described above, the sunshine cost generation unit 23 reduces the sunshine cost of the link having the sunshine information when the sunshine welcome mode is selected, and the shade information when the sunshine welcome mode is selected. Therefore, the sunshine cost corresponding to the mode selected by the mode selection unit 21 can be generated.

FIG. 6 shows a navigation device 30 according to another embodiment. In FIG. 6, the same elements as those in FIGS. 1 and 4 are denoted by the same reference numerals, and description thereof is partially omitted.
The navigation device 30 shown in FIG. 6 further includes a passenger compartment temperature detection unit 31, an outside air temperature detection unit 33, a temperature comparison unit 35, a condition matching unit 37, and a trigger unit 39 in the navigation device 20 shown in FIG.
The vehicle interior temperature detection unit 31 and the outside air temperature detection unit 33 detect the vehicle interior temperature and the outside air temperature, respectively, and include, for example, a vehicle room temperature sensor and an outside air temperature sensor.
The temperature comparison unit 35 compares the vehicle compartment temperature and the outside air temperature detected by the vehicle compartment temperature detection unit 31 and the outside air temperature detection unit 33. The compared result is sent to the condition matching unit 37.

  In addition to the comparison result sent from the temperature comparison unit 35, the condition collation unit 37 collates the detection results of the passenger compartment temperature detection unit 31 and the outside air temperature detection unit 33 with predetermined conditions. As a predetermined condition, for example, as a first condition, the difference between the passenger compartment temperature and the outside air temperature is a predetermined temperature or more (for example, 10 degrees or more), the outside air temperature is a predetermined temperature or less (for example, 15 degrees or less), and The vehicle interior temperature is a predetermined temperature or higher (for example, 25 ° C. or higher), and the second condition is that the difference between the vehicle interior temperature and the outside air temperature is a predetermined temperature or higher (for example, 10 ° C. or higher). 35 degrees or higher) and the cabin temperature can be set to a predetermined temperature or lower (for example, 25 degrees or lower). As a case where the first condition is satisfied, there is a case where the outside is cold and a heating operation is performed in the vehicle. Further, as a case where the second condition is satisfied, there is a case where the outside is hot and the vehicle is in a cooling operation.

The trigger unit 39 refers to the condition checking unit 37 and outputs a trigger signal to the mode selection unit 21 when the comparison result satisfies a predetermined condition. When the trigger signal is sent into the mode selection unit 21, the mode selection unit 21 selects the welcome welcome mode or the shade welcome mode set in the mode selection unit 21 according to the collation condition in the condition collation unit 37. . For example, the sunny welcome mode can be selected when the first condition is satisfied, and the shade welcome mode can be selected when the second condition is satisfied.
As described above, the navigation device 30 can automatically provide a route according to the environment based on the passenger compartment temperature, the outside air temperature, and the difference between the two, so that eco-driving is possible.

  Moreover, it can replace with the vehicle interior temperature detection part 31, the external temperature detection part 33, and the temperature comparison part 35, and can also provide a battery residual amount detection part. In this case, when the detection result in the battery remaining amount detection unit is equal to or less than a predetermined value, the welcome to hinata mode as the mode selection unit 21 can be selected. In such a navigation device, it is possible to travel with a certain amount of remaining battery power, so that the user can travel with confidence without worrying about the remaining battery power.

FIG. 7 shows a navigation device 40 according to another embodiment. In FIG. 7, the same elements as those in FIGS. 1, 4, and 6 are denoted by the same reference numerals, and description thereof is partially omitted.
The navigation device 40 shown in FIG. 7 further includes a remaining battery level detection unit 41, a condition matching unit 43, a trigger unit 45, and a cost correction unit 47 in the navigation device 20 shown in FIG.
The remaining battery level detection unit 41 detects the remaining battery level of the vehicle. Such a battery remaining amount detection part 41 is comprised by the voltage detection circuit which detects the voltage of a battery, for example. The detected result is sent to the condition matching unit 43.
The condition collation unit 43 collates the detection result sent from the battery remaining amount detection unit 41 with a predetermined condition. As a predetermined condition, the remaining battery level can be a predetermined value or less.

The trigger unit 45 outputs a trigger signal to the mode selection unit 21 when the detection result in the condition matching unit 43 matches the condition. When the trigger signal is sent into the mode selection unit 21, the mode selection unit 21 selects the Hinata welcome mode. The selection result is sent to the coefficient setting unit 25 and the cost correction unit 47, respectively.
The cost correction unit 47 corrects the costs stored in the sunshine cost storage unit 9 and the basic cost storage unit 11 based on the selection result of the mode selection unit 21. The correction may be performed so that the influence of the sunshine cost on the total cost is largely reflected and the influence of the basic cost is reduced.

A detailed configuration of the cost correction unit 47 will be described with reference to FIG. The cost correction unit 47 includes a sunshine cost correction unit 471, a corrected sunshine cost storage unit 473, a basic cost correction unit 475, and a corrected basic cost storage unit 477.
The sunshine cost correction unit 471 corrects the sunshine cost in the sunshine cost storage unit 9 when information is sent from the mode selection unit 21. The correction method is not particularly limited as long as the effect of the sunshine cost can be largely reflected. For example, the correction can be performed by multiplying the sunshine cost by a predetermined value (a positive number or a number of 1 or more). . The corrected sunshine cost is stored in the corrected sunshine cost storage unit 473 as the corrected sunshine cost.

When the information is sent from the mode selection unit 21, the basic cost correction unit 475 corrects the basic cost in the basic cost storage unit 11. The correction method is not particularly limited as long as the influence of the basic cost can be reduced. For example, the correction can be performed by multiplying the basic cost by a predetermined value (a negative number or a number less than 1). The corrected basic cost is stored in the corrected basic cost storage unit 477 as a corrected basic cost.
The total cost calculation unit 55 refers to the corrected sunshine cost storage unit 473 and the corrected basic cost storage unit 477, and calculates the total cost by adding both costs for each link and node. The calculated total cost is stored in the total cost storage unit 57 in association with the link information as the total cost.
Such a navigation device 40 can automatically provide a route that prioritizes battery charging based on the detection result of the remaining battery level detection unit 41.

FIG. 9 shows a navigation device 60 according to an embodiment of the present invention.
The navigation device 60 includes a control unit 410, a memory unit 411, an input unit 412, an output unit 413, an interface unit 414, a vehicle position specifying unit 415, a vehicle information detection unit 416, a search unit 17, a navigation information storage unit 418, and a guide. A route storage unit 419 is provided.
The control unit 410 is a computer device that includes a CPU, a buffer memory, and other devices, and controls other elements constituting the navigation device 60.
A computer program is stored in the memory unit 411, and this computer program is read into the control unit 410, which is a computer device, and causes it to function. This computer program can be stored in a general-purpose medium such as a DVD.

The input unit 412 is used for setting a departure point and a destination, selecting a mode related to the sunshine state, and the like. As the input unit 412, a touch panel type input device that cooperates with the display content of the display can be used.
The output unit 413 includes a display, and displays map information and other information necessary for navigation. The output unit 413 can also include a voice guidance device.
The interface unit 414 connects the navigation device 60 to a wireless network or the like.
The own vehicle position specifying unit 415 specifies the current position of the user terminal using a GPS device or a gyro device.

The vehicle information detection unit 416 detects vehicle information indicating the traveling state of the own vehicle. As vehicle information, for example, it is preferable to include vehicle compartment temperature, outside air temperature, and remaining battery capacity. Furthermore, speed information, engine speed, accelerator opening, stop lamp, shift lever information, ID information for specifying the probe car, coordinate information, time information, direction information, altitude information, longitudinal acceleration, yaw rate, ABS warning lamp, A fuel consumption amount, a steering angle (rotation angle information of the steering wheel), and the like may be provided.
The search unit 17 searches for a route from the designated departure point to the destination. When the vehicle user sets the destination, the navigation device operates to search for a guidance route to the destination. At the time of the search, a guidance route is determined with reference to a total cost storage unit 15 to be described later so that the calculated route cost is reduced. The searched guide route is stored in a guide route storage unit 419 described later.

The navigation information storage unit 418 includes a map information storage unit 421, a road information storage unit 423, and a total cost storage unit 15.
Map information is stored in the map information storage unit 421. The map information includes information on road elements for defining map information such as links and nodes, information drawn on the map, and the like.
The road information storage unit 423 stores road information that defines the characteristics of each road element such as roads and intersections. For example, road information that defines road (link) characteristics includes road type, road width, number of lanes, travel restrictions, and others.

In the total cost storage unit 15, the total cost obtained by integrating the sunshine cost and the basic cost described above is attached to each node information and each link information stored in the map information storage unit 421, and the node or link information is stored. Stored to correspond to characteristics. Examples of the characteristics of the node and the link include a road type, a road width, and the number of lanes. The total cost stored in the total cost storage unit 15 is used for the route search performed by the search unit 17.
As described above, the route searched by the search unit 17 is stored in the guide route storage unit 419. It is preferable that a shape such as a link is also stored in the guide route.

  As mentioned above, although embodiment of this invention has been described, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Furthermore, among these, two or more embodiments may be partially combined.

  The present invention is not limited to the description of the embodiments and examples of the invention described above. Various modifications may be included in the present invention as long as those skilled in the art can easily conceive without departing from the description of the scope of claims.

1 20 30 40 60 Navigation device 3 Sunlight information storage unit 5 Stagnation element information storage unit 7 23 Sunlight cost generation unit 13 49 Total cost calculation unit 17 Search unit 21 Mode selection unit 25 Coefficient setting unit 35 Temperature comparison unit 37 43 Condition comparison unit 39 45 Trigger unit 41 Battery remaining amount detection unit 47 Cost correction unit

Claims (7)

A navigation device including a search unit that searches for a route from a departure place to a destination according to a predetermined rule,
A temperature comparison unit for comparing the passenger compartment temperature and the outside air temperature;
A mode selection unit that selects a mode related to the first sunshine state or a mode related to the second sunshine state based on the comparison result of the temperature comparison unit;
Based on the mode selected by the mode selection unit, a sunshine cost generation unit that adjusts the sunshine information and stagnation element information to generate a sunshine cost,
A total cost calculation unit that calculates a total cost based on the basic cost set in association with the sunshine cost and map information,
The search unit determines a route with reference to the total cost;
A navigation device characterized by that. The stagnation element information includes traffic signal information, pause information, speed limit information, and traffic jam information.
The navigation device according to claim 1. A navigation method comprising a search step for searching for a route from a departure place to a destination according to a predetermined rule,
A temperature comparison unit for comparing the passenger compartment temperature and the outside air temperature;
A mode selection step in which the mode selection unit selects a mode related to the first sunshine state or a mode related to the second sunshine state based on the comparison result of the temperature comparison step;
A sunshine cost generation unit adjusts the sunshine information and stagnation element information to generate a sunshine cost based on the mode selected in the mode selection step ; and
A total cost calculating unit that calculates a total cost based on a basic cost set in association with the sunshine cost and map information, and
In the search step , a route is determined with reference to the total cost.
A navigation method characterized by that. The stagnation element information includes traffic signal information, pause information, speed limit information, and traffic jam information.
The navigation method according to claim 3 . A computer program for navigating a computer,
A temperature comparison means for comparing the passenger compartment temperature and the outside air temperature;
Mode selection means for selecting a mode relating to the first sunshine state or a mode relating to the second sunshine state based on the comparison result of the temperature comparison means;
Based on the mode selected by the mode selection means, the sunshine cost generation means for adjusting the sunshine information and stagnation element information to generate a sunshine cost,
Function as a total cost calculating means for calculating the total cost based on the basic cost set in association with the sunshine cost and map information,
The search means determines a route with reference to the total cost.
A computer program characterized by the above. The stagnation element information includes traffic signal information, pause information, speed limit information, and traffic jam information.
The computer program according to claim 5 . A recording medium for recording the computer program according to claim 5 .

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