JP4655841B2 - Refueling guidance system - Google Patents

Description

  The present invention relates to a refueling guide system that guides a user to a refueling timing for refueling a host vehicle. The present invention relates to a fuel supply guidance system that improves user convenience by determining and providing guidance.

Conventionally, when a driver looks at the fuel gauge from time to time while driving and the remaining fuel level is low, the driver travels to the refueling point (gas station) in his memory and refuels. In addition, if the navigation system is used, even if the land is unknown to the driver, the location of the vehicle is detected and the nearby refueling point is displayed on the navigation screen (display means), so that the nearest refueling station It was also possible to search for and refuel. Furthermore, in the conventional navigation system, not only the refueling point is displayed but also the refueling point outside the business hours is guided by acquiring the refueling point information (for example, business hours and gasoline prices) from the center. In addition to preventing this, it has also been preferentially guided to a refueling point where the fuel cost is relatively low (see, for example, JP-A-2004-125430).
JP-A-2004-125430 (pages 6 to 7, FIGS. 4 to 6)

Here, in the navigation system described in Patent Document 1, guidance is performed from the fueling points in various parts of the country recorded in advance in the center to the fueling points considered to be optimal in terms of fuel cost. However, for various reasons such as “close to home”, “easy to refuel”, “on the commuting route”, etc., the refueling points used for refueling are usually 1 or 2 for each user. Have been identified. Therefore, selecting a refueling point for guidance simply because the fuel cost is low has resulted in failure to match the actual situation of the user when refueling.
In particular, for a user who uses a car for commuting or work, the user repeatedly travels the same route every day. Therefore, the user knows in advance about the location of the refueling point along the route, and guiding the refueling point when the remaining fuel is low was not very useful information for the user. . On the other hand, instead of guiding the refueling point after the remaining fuel is low, when to refuel in the future (date, identification of the forward / return route), efficient refueling can be performed. Guiding the user is considered to be very useful information for the user.

  The present invention has been made to solve the above-described conventional problems, and it is possible to guide in advance when to perform efficient refueling when traveling on the same route repeatedly during commuting, etc. An object of the present invention is to provide an oil supply guidance system that improves the convenience of the user.

In order to achieve the above object, a fuel supply guidance system according to claim 1 of the present application includes a route registration unit that registers a route along which the vehicle travels, a remaining fuel detection unit that detects a fuel remaining amount of the vehicle, and the route registration. A refueling point storage means for storing a refueling point used by the vehicle in the past along the route registered in the means, and a fuel consumption amount required for traveling on the route registered in the route registration means. a consumption amount calculating means, the residual between the detected remaining fuel amount by the fuel detecting means on the basis of the fuel consumption calculated by the consumed amount calculating means, Oite the refueling point storage means when riding repeatedly said path A refueling point selection means for selecting a refueling point that can be reached in a state where the remaining amount of fuel is the smallest in a range that can be driven by the current fuel remaining amount of the own vehicle among the refueling points stored in Own car And refueling timing determining means for determining a timing to reach the lubrication point of interest while the remaining fuel amount even less as lubrication timing for refueling vehicle, the oil supply timing determined by said fuel supply timing determining means to the user And an oil supply guide means for guiding.
The “refueling timing” may be an element for specifying the timing of refueling the vehicle, and in addition to the timing (date and time) of refueling, the number of travels and the distance traveled until refueling. Etc.

The refueling guidance system according to claim 2 is the refueling guidance system according to claim 1, wherein the route registered by the route registration means is a forward route from the departure place to the destination and a departure point from the destination to the departure place. It is characterized by comprising a return path.

Further, an oil supply guide system according to claim 3 is the oil supply guide system according to claim 1 or 2, wherein the oil supply timing determining means guides the time when the oil supply guide means is scheduled to perform oil supply. It is characterized by that.

In the refueling guidance system according to claim 1 having the above-described configuration, the host vehicle is refueled when traveling repeatedly on the route based on the remaining amount of fuel and the fuel consumption necessary for traveling on the registered route. Since the fueling timing is determined and the result is guided to the user, it is possible to guide the user in advance when to perform efficient refueling when traveling repeatedly on the same route used for commuting. , User convenience is improved.
In addition, it memorizes the refueling points that the vehicle has used in the past along the registered route, and also guides the refueling timing for refueling when traveling the route repeatedly among the stored refueling points. It is possible to guide the user in advance the timing for performing efficient refueling for the refueling point desired by the user. Therefore, it is possible to provide more appropriate guidance in consideration of the refueling point that the user normally uses.
In addition, the stored fueling point is guided to the user when to reach the fueling point that can be reached in the state where the remaining amount of fuel is the smallest in the range that can be traveled from the current fuel remaining amount of the own vehicle. When traveling repeatedly on the same route used for commuting, etc., it becomes possible to guide the user in advance about the timing of the most efficient refueling using a refueling point located along that route. User convenience is improved.

Further, in the refueling guidance system according to claim 2, a route composed of an outbound route from the departure point to the destination and a return route from the departure point to the departure point is registered, and the vehicle when traveling on the round-trip route repeatedly Since the timing of refueling is determined and the result is guided to the user, when the same round-trip route used for commuting is repeatedly traveled, the timing for efficient refueling should be guided to the user in advance. This improves the convenience for the user.

Furthermore, in the refueling guidance system according to claim 3, since the time when the refueling is scheduled to be performed is guided as the refueling timing, the user can easily grasp the specific timing for refueling and is guided. There is no risk of forgetting to refuel at the timing.

  Hereinafter, based on the embodiment which materialized the oil supply guidance system concerning the present invention, it explains in detail, referring to drawings. First, a schematic configuration of an oil supply guide system 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing an oil supply guidance system 1 according to the present embodiment.

  As shown in FIG. 1, an oil supply guidance system 1 according to the present embodiment is basically composed of a navigation device 2 disposed in a vehicle and various peripheral devices connected to the navigation device 2.

  In addition, the navigation device 2 performs various operations based on the current location detection processing unit 11 that detects the current position of the host vehicle, the data recording unit (refueling point storage unit) 12 in which various types of data are recorded, and the input information. The navigation control unit (route registration unit, consumption calculation unit, refueling timing determination unit) 13 for performing the calculation process, the operation unit 14 for receiving an operation from the operator, and information such as a map is displayed to the operator. A liquid crystal display (fuel supply guide means) 15, a speaker (fuel supply guide means) 16 that outputs voice guidance related to route guidance, and a communication device 17 that communicates with an information center such as a traffic information transmission center. ing. The navigation control unit 13 includes a vehicle speed sensor 20 that detects the traveling speed of the host vehicle, a remaining fuel detection sensor (remaining fuel detection means) 21 that detects the remaining amount of fuel in the fuel tank of the vehicle, and when the vehicle is refueled. An oil supply opening / closing sensor 22 for detecting the opening / closing of the oil supply opening that is open to the ignition switch 23 and an ignition switch 23 are connected.

  The components constituting the navigation device 2 will be described below. The current location detection processing unit 11 includes a GPS 31, a geomagnetic sensor 32, a distance sensor 33, a steering sensor 34, a gyro sensor 35 as an azimuth detection unit, and an altimeter (not shown). And the like, and it is possible to detect the current position, direction, distance to a target (for example, an intersection), and the like.

  Specifically, the GPS 31 detects the current location and current time of the vehicle on the earth by receiving radio waves generated by artificial satellites, and the geomagnetic sensor 32 measures the direction of the vehicle by measuring the geomagnetism. The distance sensor 33 detects a distance between predetermined positions on the road. Here, as the distance sensor 33, for example, the rotational speed of a wheel (not shown) of the vehicle is measured, a sensor that detects the distance based on the measured rotational speed, the acceleration is measured, and the measured acceleration is 2 A sensor that integrates the times and detects the distance can be used.

  The steering sensor 34 detects the rudder angle of the host vehicle. Here, as the steering sensor 34, for example, an optical rotation sensor attached to a rotating portion of a steering wheel (not shown), a rotation resistance sensor, an angle sensor attached to a wheel, or the like is used.

  And the gyro sensor 35 detects the turning angle of the own vehicle. Here, as the gyro sensor 35, for example, a gas rate gyro, a vibration gyro, or the like is used. Further, by integrating the turning angle detected by the gyro sensor 35, the vehicle direction can be detected.

  The data recording unit 12 is registered in an external storage device and a hard disk (not shown) as a recording medium, a map DB 24 and a fueling point storage DB 25 recorded on the hard disk, and a travel route registration process (see FIG. 3) described later. And a recording head (not shown) which is a driver for reading out the registered traveling route, a predetermined program and the like and writing predetermined data into the hard disk. In the present embodiment, a hard disk is used as the external storage device and storage medium of the data recording unit 12. However, in addition to the hard disk, a magnetic disk such as a flexible disk can be used as the external storage device. Also, a memory card, magnetic tape, magnetic drum, CD, MD, DVD, optical disk, MO, IC card, optical card, etc. can be used as an external storage device.

  The map DB 24 stores various information necessary for route guidance and map display. For example, map data for displaying a map, intersection data for each intersection, node data for a node point, road data for a road In addition, search data for searching for a route, facility data relating to a facility, search data for searching for a point, and the like are recorded.

  On the other hand, the refueling point storage DB 25 is a storage area that stores one or a plurality of refueling points (specifically, gas stations) where the user refuels the vehicle. Then, based on the refueling points stored in the refueling point storage DB 25, the timing of refueling the host vehicle and guidance of the refueling points are performed (S39 in FIG. 6). The refueling point storage DB 25 will be described later in detail with reference to FIG.

  Further, the navigation control unit 13 is used as a working memory for the CPU 41 as an arithmetic device and a control device for performing overall control of the navigation device 2 and when the CPU 41 performs various arithmetic processes, and when a route is searched for. In addition to the RAM 42 in which route data and the like are stored, a control program, a route guidance processing program that searches for a route to the destination, guides the searched guidance route, and a travel route on which the vehicle repeatedly travels such as a commute route Used as a registered travel route (see FIG. 3), consumed fuel calculation processing program (see FIG. 4) for calculating fuel consumption consumed in the registered travel route, and used when a user refuels Refueling point registration processing program (see FIG. 5) for registering the refueling point to An internal storage such as a ROM 43 in which a refueling guide processing program (see FIG. 6) for guiding a refueling timing and a refueling point that minimizes the number of times of refueling is recorded, and a flash memory 44 in which a program read from the ROM 43 is recorded. Equipment. As the RAM 42, ROM 43, flash memory 44, etc., a semiconductor memory, a magnetic core or the like is used. Further, as the arithmetic device and the control device, an MPU or the like can be used instead of the CPU 41.

  In the present embodiment, various programs are recorded in the ROM 43 and various data are recorded in the data recording unit 12. However, the programs, data, and the like are stored in the same external storage device, memory card, and the like. It is also possible to read out a program, data, etc. from the flash memory 44 and so on. Further, the program, data, etc. can be updated by exchanging a memory card or the like.

  Furthermore, the navigation control unit 13 is electrically connected to peripheral devices (actuators) of the operation unit 14, the liquid crystal display 15, the speaker 16, and the communication device 17.

  The operation unit 14 is operated when correcting the current location at the start of travel and inputting a departure point as a guidance start point and a destination point as a guidance end point. The operation unit 14 includes a plurality of operation switches (such as various keys and buttons). (Not shown). The navigation control unit 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches. As the operation unit 14, a keyboard, a mouse, a barcode reader, a remote control device for remote operation, a joystick, a light pen, a stylus pen, or the like can be used. Furthermore, it can also be configured by a touch panel provided on the front surface of the liquid crystal display 15.

  The liquid crystal display 15 also has operation guidance, operation menus, key guidance, guidance route from the current location to the destination, guidance information along the guidance route, traffic information, news, weather forecast, time, mail, TV program, etc. Is displayed. In particular, in the navigation device 2 according to the present embodiment, the refueling timing at which the number of refueling times when traveling repeatedly on the registered travel route is displayed on the calendar, and the refueling point (gas station) for refueling is displayed on the map. This is displayed (see FIGS. 10 and 11). Instead of the liquid crystal display 15, it is also possible to use a CRT display, a plasma display, or the like, or a hologram device that projects a hologram onto the windshield of a vehicle.

  In addition, the speaker 16 outputs voice guidance for guiding traveling along the guidance route based on an instruction from the navigation control unit 13. In particular, in the navigation device 2 according to the present embodiment, the user is informed of the refueling point and the refueling timing at which refueling is minimized so that the number of times of refueling when traveling on the registered travel route is minimized. Here, examples of the voice guidance to be guided include “Please turn right at the intersection 200 meters ahead” and “The next national highway No. XX is congested”. In addition to the synthesized voice, the voice output from the speaker 16 can output various sound effects and various guidance information recorded in advance on a tape, a memory, or the like.

  Then, the communication device 17 is used for information such as traffic congestion information, regulation information, parking lot information, traffic accident information, and service area congestion transmitted from an information center such as a VICS (registered trademark: Vehicle Information and Communication System) center. It is a beacon receiver that receives traffic information composed of each information as a radio beacon, an optical beacon, or the like via a radio beacon device, an optical beacon device, or the like arranged along a road. The communication device 17 is a network that enables communication in a communication system such as a LAN, WAN, intranet, cellular phone line network, telephone line network, public communication line network, dedicated communication line network, and communication line network such as the Internet. It may be a device. In addition to the information from the information center, the communication device 17 includes an FM receiver that receives FM multiplex information including information such as news and weather forecast as FM multiplex broadcast via an FM broadcast station. The beacon receiver and the FM receiver are unitized and arranged as a VICS receiver, but can be arranged separately.

  Next, the fueling point storage DB 25 recorded in the data recording unit 12 will be described using a specific example with reference to FIG. Here, the refueling point storage DB 25 is a storage area for recording a refueling point (gasoline station) used when a user refuels, and when the refueling port of the vehicle is opened, the current detected by the GPS 31 is stored. This is a DB in which the vehicle position is recorded as a fueling point.

In the refueling guidance system 1 according to the present embodiment, the refueling points stored in the refueling point storage DB 25 are only refueling points along a registered travel route registered by a travel route registration process described later. The registered travel route to be registered is basically composed of an outbound route from a departure point (for example, home) to a destination (for example, a company) and a return route from the destination to the departure point, and is stored in the refueling point storage DB 25. Is stored together with the position coordinates as to whether the refueling point is located along the forward route or the return route in the registered travel route.
For example, in FIG. 2, a refueling point located at coordinates (x1, y1) along the forward path is stored as the first refueling point, and a refueling position located at coordinates (x2, y2) along the return path as the second refueling point. The point is remembered.

  Then, as shown in FIG. 2, the refueling point storage DB 25 in which the refueling points are recorded is used as a refueling point to be refueled when calculating a refueling timing for refueling the vehicle. Specifically, it is possible to reach the vehicle with the current remaining amount of fuel and the lowest amount of fuel from the fuel remaining in the vehicle and the fuel consumed when traveling on the registered travel route. The timing of reaching the fueling point (in this embodiment, the date and the identification of the forward / return route) is guided to the user together with the fueling point as the fueling timing. As a result, when the user repeatedly travels along the registered travel route, the user can know the most efficient refueling timing and the refueling point.

  Next, a travel route registration processing program executed by the CPU 41 of the navigation device 2 in the fuel supply guidance system 1 having the above configuration will be described with reference to FIG. FIG. 3 is a flowchart of the travel route registration processing program according to the present embodiment. Here, the travel route registration processing program determines the travel route (commuting route, etc.) that the user repeatedly travels from the departure point (for example, home) to the destination (for example, company) and from the destination to the departure point. It is a program that is specified by the return route and registers as a registered travel route. The programs shown in the flowcharts of FIGS. 3 to 6 below are stored in the RAM 42 and the ROM 43 provided in the navigation device 2 and are executed by the CPU 41.

  First, in step (hereinafter abbreviated as S) 1 in the travel route registration processing program, the CPU 41 determines whether or not registration of a travel route has started. Specifically, when it is determined that the user has performed a predetermined operation for starting registration of a travel route using the operation unit 14, it is determined that registration of the travel route has started.

If it is determined that registration of the travel route has been started (S1: YES), the current position of the host vehicle is detected based on the detection result of the current location detection processing unit 11 in S2.
On the other hand, if it is determined that registration of the travel route has not been started (S1: NO), the process waits until registration of the travel route is started.

  Next, in S3, the current position of the host vehicle detected in S2 is registered in the data recording unit 12 as the “departure point (outward travel start point and return travel end point)” of the travel route.

  Thereafter, in S4, the current position detection processing unit 11 detects the current position and direction of the host vehicle at predetermined intervals, and specifies the route (specifically, the link number) on which the host vehicle travels from the road data recorded in the map DB 24. Then, the identified travel route is registered as a registered travel route for the outbound route.

  In S5, the CPU 41 determines whether or not the own vehicle has arrived at the destination. Here, whether or not the own vehicle has arrived at the destination is determined based on whether or not the ignition switch 23 has been turned from ON to OFF, that is, whether or not the engine of the own vehicle has been stopped. Note that it may be determined that the vehicle has arrived at the destination when the user performs a predetermined operation for recognizing that the vehicle has arrived at the destination using the operation unit 14.

If it is determined that the vehicle has arrived at the destination (S5: YES), in S6, the current position of the vehicle is detected based on the detection result of the current location detection processing unit 11, and the detected vehicle is detected. The current position of the car is registered in the data recording unit 12 as a “destination (travel start point on the return path at the end of travel on the forward path)” (S7).
On the other hand, when it is determined that the host vehicle has not arrived at the destination (S5: NO), the process returns to S4 and the travel route is continuously registered.

Next, in S8, it is determined whether or not the vehicle has started traveling again from the destination based on information from the ignition switch 23 and the vehicle speed sensor 20, and when it is determined that the vehicle has started traveling (S8: YES) ), The current location detection processing unit 11 detects the current location and direction of the vehicle at predetermined intervals, and specifies the route (specifically, the link number) on which the vehicle travels from the road data recorded in the map DB 24. Then, the identified travel route is registered as a return travel travel route (S9).
On the other hand, if it is determined that traveling has not started (S8: NO), the system waits until traveling is started.

Thereafter, in S10, the CPU 41 determines whether or not the vehicle has arrived at the “departure place” registered in S3. And when it determines with the own vehicle having arrived at the departure place (S10: YES), the said travel route registration process is complete | finished. Here, FIG. 7 is a diagram showing an example of a registered travel route registered by the travel route registration process of S1 to S10. In FIG. 7, a travel route 51 that passes through node A, node B, node C, node D, and node E from the departure point S to the destination G in this order is registered as a registered travel route for the outbound route. The traveling route 52 that passes through the node F, the node C, the node B, and the node A in order is registered as a registered traveling route for the return route. Then, the entire route including the traveling routes 51 and 52 is set as a registered traveling route in which the vehicle repeatedly travels.
On the other hand, when it is determined that the host vehicle has not arrived at the departure place (S10: NO), the process returns to S9 and the travel route is continuously registered. Note that the processing of S1 to S10 described above corresponds to the processing of the route registration means.

  Next, a consumption calculation processing program executed by the CPU 41 of the navigation device 2 in the fuel supply guidance system 1 will be described with reference to FIG. FIG. 4 is a flowchart of the consumption calculation processing program according to the present embodiment. Here, the consumption calculation processing program is a program for calculating the fuel consumption when the host vehicle travels on the registered travel route registered by the travel route registration process (see FIG. 3).

  First, in the consumption calculation processing program, in S11, the CPU 41 determines whether or not the vehicle has started running from either the “departure place” or “destination” registered in S3 and S7. Specifically, the current position detection processing unit 11 identifies the own vehicle position, and further detects the start of traveling based on information from the vehicle speed sensor 20 and the ignition switch 23.

  If it is determined that the vehicle has started running from either “departure point” or “destination” (S11: YES), the remaining fuel detection sensor 21 is used to place the vehicle in the fuel tank of the vehicle. Detection of a certain remaining amount of fuel is started (S12). In the present embodiment, when a departure point or destination located on the registered travel route registered by the travel route registration process (see FIG. 3) is departed or arrived, and a node point located on the registered travel route is determined. When the vehicle passes, the remaining amount of fuel in the fuel tank of the own vehicle is detected.

  Thereafter, in S13, the current position detection processing unit 11 detects the current position and direction of the host vehicle at predetermined intervals, and specifies the route (specifically, the link number) on which the host vehicle travels from the road data recorded in the map DB 24. Then, it is checked whether or not the identified travel route matches the registered travel route registered in S4 and S9.

  In S14, it is determined whether or not the vehicle is traveling on the registered travel route based on the collation result in S13. If it is determined that the vehicle is traveling on the registered travel route (S14: YES), The amount of fuel consumed when traveling on the registered travel route is recorded in the data recording unit 12 (S15). Here, in the fuel supply guidance system 1 according to the present embodiment, the amount of fuel consumed when traveling on the link section is calculated for each link constituting the registered travel route.

Below, a specific example is given and demonstrated about the calculation and recording method of the fuel consumption at the time of drive | working a registration driving | running route. For example, FIG. 8 is a diagram showing an example of a fuel consumption record table in which the fuel consumption of the registered travel route shown in FIG. 7 is recorded.
As described above, the registered travel route shown in FIG. 7 includes an outbound registered travel route from the departure point S to the destination G in order through the node A, node B, node C, node D, and node E, and the destination G. From the departure route S to the departure point S, and the route is a registered travel route that passes through the node F, the node C, the node B, and the node A in order. The fuel consumption (0.10 L in FIG. 8) consumed for traveling in the section (part of the link) from the departure point to the node A is calculated and recorded. Further, the amount of fuel consumed to travel the link section from node A to node B from the remaining amount of fuel at the time of passing through node A and the remaining amount of fuel at the time of passing through node B (0.20 L in FIG. 8). ) Is calculated and recorded. Similarly, the link section from node B to node C, the link section from node C to node D, the link section from node D to node E, the section from node E to the destination (part of the link), the purpose Section from the ground to node F (part of the link), link section from node F to node C, link section from node C to node B, link section from node B to node A, from node A to departure place Are also calculated and recorded as shown in FIG.
In the present embodiment, the same section in which the fuel consumption is once calculated is not calculated again, but may be calculated again every predetermined period (for example, one month). Further, when the vehicle travels a plurality of times, an average value of the fuel consumption may be calculated and recorded. Further, the average value of fuel consumption may be calculated for each day of the week. As a result, it is possible to calculate more accurate fuel consumption considering the difference in traffic volume on each day of the week.

  On the other hand, if it is determined in S14 that the vehicle has not traveled on the registered travel route (S14: NO), it is a case where the vehicle has entered a route outside the registered travel route, and therefore, until it returns to the registered travel route again. Control is performed so that the fuel consumption amount of the traveled route is not recorded (S16).

  Thereafter, in S17, the CPU 41 determines whether or not the vehicle has reached either the “departure place” or the “destination” registered in S3 and S7 based on the detected vehicle position. As a result, when it is determined that the vehicle has reached either the “departure place” or the “destination” (S17: YES), the consumption calculation process ends. On the other hand, if it is determined that the vehicle has not reached either the “departure point” or the “destination” (S17: NO), the process returns to S13 to calculate the fuel consumption amount related to the registered travel route. To continue. In addition, the process of the above S11-S17 is corresponded to the process of a consumption calculation means.

  Next, a fueling point registration processing program executed by the CPU 41 of the navigation device 2 in the fueling guidance system 1 will be described with reference to FIG. FIG. 5 is a flowchart of the refueling point registration processing program according to this embodiment. Here, the refueling point registration processing program is a program for registering in advance one or a plurality of refueling points used when the user performs refueling.

  First, in S21 in the refueling point registration processing program, the CPU 41 determines whether or not the refueling port of the vehicle that opens and closes when refueling is opened based on the detection result of the refueling port opening / closing sensor 22.

If it is determined that the refueling port has been opened (S21: YES), the current position of the host vehicle is detected based on the detection result of the current location detection processing unit 11 (S22).
On the other hand, if it is determined that the fuel filler opening is not opened (S21: NO), the system waits until the fuel filler opening is opened.

  Next, in S23, it is determined whether or not the vehicle is located at a position along the registered travel route from the vehicle location detected in S22 and the registered travel route registered in S4 and S9. It is determined whether the refueling point where the vehicle is refueled is a refueling point located along the registered travel route.

  If it is determined that the host vehicle is located at a position along the registered travel route (S23: YES), in S24, the vehicle location detected in S22 is used as a fueling point storage DB 25 (see FIG. 2). ). Further, in the process of S24, the travel coordinates of the vehicle up to the refueling point, etc. as to whether the refueling point is located along the forward route or the return route in the registered travel route along with the position coordinates for specifying the refueling point, etc. Is determined and stored. Thereafter, the refueling point registration process ends.

  On the other hand, if it is determined that the host vehicle is not located at a position along the registered travel route (S23: NO), the refueling point to be refueled is a refueling point not located along the registered travel route. It is determined that the refueling point used for minimizing the number of times of refueling is ineligible. Therefore, without registering the refueling point, the point data of the vehicle position detected in S22 is discarded in S25.

  Next, an oil supply guidance processing program executed by the CPU 41 of the navigation device 2 in the oil supply guidance system 1 will be described with reference to FIG. FIG. 6 is a flowchart of an oil supply guidance processing program according to the present embodiment. Here, the refueling guidance processing program assumes that the refueling timing (date or forward / return) that minimizes the number of times of refueling is assumed when traveling on the registered travel route registered in the travel route registration process (see FIG. 3) is repeated. Identification) and its refueling point (position and name of the gas station), and when the ignition switch 23 is switched from OFF to ON (that is, when the engine is started), the user operates the operation unit 14. This is started when a predetermined operation is performed.

  First, in S31 in the refueling guidance processing program, the CPU 41 uses the remaining fuel detection sensor 21 to acquire the remaining fuel amount in the fuel tank of the host vehicle. Next, in S32, the fuel consumption (see FIG. 8) when traveling on the registered travel route recorded in the data recording unit 12 in S15 is acquired.

  Then, in S33, when it is assumed that the vehicle starts traveling from the departure place and repeatedly travels the registered traveling route from the remaining fuel amount acquired in S31 and the fuel consumption acquired in S32. It is calculated how many times the remaining fuel amount becomes “0 L” during traveling on the forward or return path. For example, in the case where the registered travel route shown in FIG. 7 is registered and the remaining fuel amount is 20L, the remaining fuel amount is “0L” in the 12th outbound route referring to the fuel consumption amount in FIG. "Is calculated. Further, when the remaining amount of fuel is 10 L, it is calculated that the remaining amount of fuel becomes “0 L” in the sixth outbound path.

  Next, in S34, information related to the refueling point registered in S24 is acquired from the refueling point storage DB 25. In S35, the forward or return path in which the fuel remaining amount calculated in S33 is “0L” is registered as a refueling candidate path that is a refueling path.

  Further, in S36, it is determined whether or not there is a refueling point that can be reached before the remaining amount of fuel reaches “0 L” on the forward or return path that is the fueling candidate path registered in S35. Hereinafter, the determination process in S36 will be described using a specific example.

Here, FIG. 9 is a diagram showing a case where gas stations 61 and 62 that are two refueling points are registered along the registered travel route shown in FIG. For example, in FIG. 9, the gas station 61 is located between the node C and the node D on the forward travel route 51, and the gas station 62 is located between the node C and the node B on the backward route travel route 52. .
If the fuel remaining amount of the vehicle is 15.6L, referring to the fuel consumption in FIG. 8, the fuel is "0L" between node D and node E during the 9th outbound travel. Therefore, the CPU 41 determines that the gas station 61 is a refueling point that can be reached before the remaining amount of fuel reaches “0 L”.
On the other hand, if the amount of fuel remaining in the host vehicle is 20.0L, the fuel is "0L" between node A and node B during the 12th outbound travel, so the CPU 41 is in the refueling candidate route. It is determined that there is no refueling point that can be reached before the remaining amount of fuel reaches “0 L”.

  If it is determined in S36 that there is no refueling point that can be reached before the remaining amount of fuel reaches “0 L” (S36: NO), the forward or return path currently registered in the refueling candidate route The previous outbound route or return route is newly registered as a refueling candidate route. For example, when the 12th traveling forward route is currently registered as a fueling candidate route, the 11th traveling backward route is registered as a fueling candidate route. In addition, when the 20th return route is registered as a refueling candidate route, the 20th travel route is registered as a refueling candidate route.

  Thereafter, in S36, it is again determined whether or not there is a refueling point on the forward or return route that is the refueling candidate route newly registered in S37. If it is determined again in S36 that there is no refueling point (S36: NO), the forward path or the return path before the first run is newly registered as a refueling candidate path, and the same determination is repeated.

When it is determined that there is a refueling point that can be reached in S36 (a refueling point that can be reached before the remaining amount of fuel reaches “0L” when the determination process is performed first) (S36: YES). ) Shows the refueling points that can be reached with the least amount of fuel remaining (that is, the refueling point closest to the destination on the outbound route and the refueling point closest to the starting point on the return route). Then, the timing for reaching the refueling point is specified (S38). Here, the specification of the oil supply timing in the oil supply guide system 1 according to the present embodiment is specified with respect to “whether refueling is performed in the forward path or the return path” and “on which date the oil supply is performed”.
At that time, in particular, when specifying “on which date to perform refueling”, information on how often the user travels on the registered travel route is required. Therefore, in the fuel supply guidance system 1 according to the present embodiment, the date and time when the user has traveled on the registered travel route in the past is recorded as the travel history, and how often the user travels on the registered travel route from the travel history. It is determined whether.

  For example, when it is determined from the travel history that the user reciprocates the registered travel route once a weekday, the current date is July 28, and the refueling point that can be reached by the determination process of S36 If the refueling candidate route registered when it was determined that there was a refueling was the seventh return trip, refueling on August 5th, 6 days after July 28, excluding weekends and holidays Identified.

  In addition to determining based on the travel history as described above, how often the user travels on the registered travel route is determined based on an input operation using the operation unit 14 of the user. You may do it. In that case, "round trip once a day on weekdays", "round trip once a day including holidays", "round trip twice a day on weekdays", "round trip once a day on specific days of the week" It is desirable that the user can select from a plurality of conditions such as “Yes”. In addition, the process of the above S31-S38 corresponds to the process of a fuel supply timing determination means.

  Thereafter, in S39, the refueling point and refueling timing specified in S38 are guided to the user. Here, in the refueling guidance system 1 according to the present embodiment, guidance is performed by display on the liquid crystal display 15 and sound output from the speaker 16.

Below, the concrete guidance method of a fueling point and a fueling timing is demonstrated using FIG.10 and FIG.11.
As shown in FIG. 10, when guiding the refueling point and the refueling timing in S <b> 39, first, the date notification screen 71 is displayed on the liquid crystal display 15. On the date notification screen 71, a calendar for the corresponding month is displayed, and a mark 72 indicating a gas station is displayed at the position of the date of refueling specified in S38. Further, in the mark 72, characters “out” and “double” that specify whether refueling is performed in the forward path or the return path are displayed. For example, in the date notification screen 71 shown in FIG. 10, it is notified that it is appropriate to perform refueling during the return road travel on August 5, 2005.
On the other hand, when the date notification screen 71 is displayed, the speaker 16 indicates that the refueling point and the refueling timing are “refueling at the XX stand on the return path on Friday, August 5 is the most efficient”. Output guidance.

Then, when an operation for selecting the mark 72 is performed using the operation unit 14 in a state where the date notification screen 71 is displayed on the liquid crystal display 15, refueling should be performed on the liquid crystal display 15 in place of the date notification screen 71. A location notification screen 81 in FIG. 11 showing the points on the map is displayed.
In the location notification screen 81, the date 82 for performing the refueling specified in S38 is displayed on the upper left of the screen, and further, the starting point 83, the destination 84, the outward route 85, the return route 86, and the specified S38 indicating the registered travel route are specified. The gas station 87 that is the optimum refueling point is displayed. The gas station 87 displays a station name 88 for identifying the gas station. Thereby, the user can know the refueling timing, the location and name of the refueling point when performing the most efficient refueling, and the convenience is improved.

As described above in detail, in the fuel supply guidance system 1 according to the present embodiment, it is assumed that a route that frequently travels for use such as commuting is registered as a registered travel route (S4, S9), and the registered travel route is repeatedly traveled. In this case, the refueling point to be used in advance is registered (S24). Among one or a plurality of refueling points, the refueling point for performing refueling so that the number of refueling is minimized and the refueling timing are specified (S31). ~ S38), since guidance is provided to the user (S39), it is possible to guide the user in advance when to perform efficient refueling when traveling repeatedly on the same route used for commuting and the like. , User convenience is improved.
In addition, one or a plurality of refueling points used by the user are stored in the refueling point storage DB 25 in advance, and the number of refueling times is minimized when repeatedly traveling the registered travel route from the stored refueling points. Since the refueling point for refueling is guided at the refueling timing, it is possible to guide the user in advance the timing for efficient refueling intended for the refueling point desired by the user. Therefore, it is possible to guide a more appropriate refueling timing and a refueling point in consideration of a refueling point that the user normally uses.
Further, when the user is informed of the refueling timing, the date notification screen 71 is used to notify the user of the date on which the refueling is scheduled, so that the user can easily grasp the specific timing of refueling. There is no risk of forgetting to refuel at the guided timing.
In addition, the actual amount of fuel consumed on the registered travel route is calculated by actually driving the vehicle on the registered travel route. Therefore, the road conditions (speed limit, road gradient, road congestion, etc.) that are unclear from the data alone are calculated. Etc.) can be calculated accurately.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in this embodiment, in the consumption calculation process (FIG. 4), the fuel consumption for each link constituting the registered travel route is calculated. However, only the fuel consumption for the two categories of the forward route and the return route is calculated. It is also good to do. In that case, in the determination process of S36 of the refueling guidance processing program (FIG. 6), the ratio of the distance to the refueling point with respect to the total length of the forward path or the return path and the fuel consumption necessary to travel the entire length of the forward path or the return path By comparing with the ratio of the remaining amount of fuel, it is determined whether there is a refueling point that can be reached before the remaining amount of fuel becomes “0 L”.

  In the present embodiment, the registered travel route registered is a route composed of an outbound route from the departure point to the destination and a return route from the destination to the departure point, but the registered travel route is composed of the outbound route and the return route. The route does not need to be a route that travels, and may be a route that travels via a plurality of destinations.

In the present embodiment, registration of the registered travel route (S1 to S10) is performed based on the route on which the vehicle is actually traveled. However, the navigation device 2 is used to select or search on the map data. It is also possible to register the completed route as a registered travel route.
Furthermore, the registration (S21 to S25) of the refueling points may be registered based on the refueling points selected on the map data in the same manner.

It is the block diagram which showed the oil supply guidance system which concerns on this embodiment. It is the figure shown about the fueling point memory | storage DB where a fueling point is recorded. It is a flowchart of the travel route registration process program which the navigation apparatus concerning this embodiment performs. It is a flowchart of the consumption calculation process program which the navigation apparatus concerning this embodiment performs. It is a flowchart of the refueling point registration process program which the navigation apparatus concerning this embodiment performs. It is a flowchart of the oil supply guidance process program which the navigation apparatus which concerns on this embodiment performs. It is the figure which showed an example of the registered travel route registered by the travel route registration process. It is the figure which showed an example of the fuel consumption record table which recorded the fuel consumption of the registration driving | running route shown in FIG. It is the figure which showed the case where two refueling points are registered along the registration driving | running route shown in FIG. It is the figure shown about the guidance screen displayed on a liquid crystal display when performing guidance of a fueling point and a fueling timing. It is the figure shown about the guidance screen displayed on a liquid crystal display when performing guidance of a fueling point and a fueling timing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refueling guidance system 2 Navigation apparatus 11 Present location detection process part 12 Data recording part 13 Navigation control part 14 Operation part 15 Liquid crystal display 16 Speaker 21 Residual fuel detection sensor 25 Refueling point storage DB
41 CPU
42 RAM
43 ROM
51 Outbound travel route 52 Inbound travel route

Claims (3)

Route registration means for registering the route on which the vehicle travels;
A remaining fuel detection means for detecting the fuel remaining amount of the own vehicle;
A refueling point storage unit that stores refueling points that the vehicle has used in the past along the route registered in the route registration unit;
Consumption calculation means for calculating the fuel consumption required to travel the route registered in the route registration means;
The residue and the detected remaining fuel amount by the fuel detecting means on the basis of the fuel consumption calculated by the consumed amount calculating means, refueling point stored in Oite the refueling point storage means when repeatedly traveling the route A refueling target point selecting means for selecting, as a refueling target point, a refueling point that can be reached in a state where the remaining amount of fuel is the smallest in a range that can be driven by the current fuel remaining amount of the vehicle,
Refueling timing determining means for determining a timing at which the vehicle reaches the refueling target point with the least amount of fuel remaining as a refueling timing for refueling the vehicle;
Fuel supply guide system characterized by having a fuel supply guide means for guiding the oil supply timing to the user determined by the fuel supply timing determination means. The refueling guidance system according to claim 1 , wherein the route registered by the route registration unit includes an outward route from a departure point to a destination and a return route from the destination to the departure point. 3. The oil supply guide system according to claim 1, wherein the oil supply guide unit guides a time when oil supply is scheduled to be performed. 4.

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