JP5786354B2 - Navigation system, information providing apparatus, and driving support apparatus - Google Patents

Description

  The present invention relates to a navigation system, an information providing device, and a driving support device.

  A step of detecting a current position of the vehicle, a step of searching for a route from the detected current position to an intersection within a predetermined distance using link information, a step of accepting a destination setting, and a destination setting When the route is received, the route from the intersection to the destination is searched using the link information, and the route consisting of the route from the searched current position to the intersection and the route from the searched intersection to the destination is recommended. A navigation device that executes a step specified as follows is known (Patent Document 1).

JP 2010-181418 A

  However, since the shortest route for the vehicle that has performed the route search is calculated, there is a problem that the route that is optimal for other vehicles is not calculated.

  The problem to be solved by the present invention is to provide a navigation system, an information providing apparatus, and a driving support apparatus that calculate an optimum route with another vehicle.

  The present invention searches for or displays a recommended route from a current value to a destination by traveling in a driving group set according to a driving attribute or vehicle attribute by a driver and the current location of the vehicle. This solves the above problem.

  According to the present invention, since a plurality of vehicles travel in a traveling group corresponding to each attribute, the flow of traffic can be made smooth.

1 is a block diagram of a navigation system according to an embodiment of the present invention. FIG. 1 shows characteristics of acceleration detected by an acceleration sensor included in the attribute acquisition unit of FIG. 1, (a) is a graph showing characteristics during impatient driving, and (b) shows characteristics during adult driving. It is a graph. It is a figure for demonstrating the attribute distribution on a map memorize | stored by the attribute distribution memory | storage part of FIG. (A) is a figure for demonstrating the map memorize | stored in the map information database of FIG. 1, (b) is a figure for demonstrating the driving | running | working group of the time t on the map of (a), (C) is a figure for demonstrating the driving | running | working group of the time t + x on the map of (a), (d) is a figure for demonstrating the recommended route set by the route search part of FIG. . It is a flowchart which shows the control procedure of the driving assistance device of FIG. It is a flowchart which shows the control procedure of the data management apparatus of FIG. (A) is a figure for demonstrating the road condition in the system which does not mount the navigation system of FIG. 1, (b) is a figure for demonstrating the road condition in the navigation system of FIG. It is a flowchart which shows the control procedure of the data management apparatus of the modification of embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<< First Embodiment >>
FIG. 1 is a block diagram of a navigation system to which an embodiment of the present invention is applied. The navigation system of this example includes a driving support device 100 and a data management device 200. The driving assistance device 100 is a device for assisting driving by presenting an optimal route or the like to the destination to the driver, and is provided in the vehicle. The data management device 200 is a device that manages information on a plurality of vehicles and manages map information, and is a device that provides information in response to information requests from vehicles. The data management apparatus 200 corresponds to a probe car data management center that is independently collected and managed by an automobile manufacturer.

  The driving support apparatus 100 includes an attribute acquisition unit 101, a position information acquisition unit 102, a destination setting unit 103, a display unit 104, a data transmission / reception unit 105, and a control unit 10. The data management apparatus 200 includes a map information database 201, an attribute distribution storage unit 202, a data transmission / reception unit 203, and a control unit 20.

  First, each configuration of the driving support device 100 will be described. The attribute acquisition unit 101 uses a vehicle speed sensor or an acceleration sensor provided in the vehicle, a sensor for measuring a distance between the preceding vehicle and the like, or a sensor for detecting vehicle information such as the number of brakes. Get the attributes (driving characteristics). The vehicle information includes information related to the number and timing of braking, the inter-vehicle distance from the preceding vehicle, and the like in addition to the acceleration and the vehicle speed. The driving attribute indicates a driving tendency of the driver and is an attribute set for each driver. The driving attribute indicates a driving tendency such as, for example, a driving tendency that the vehicle speed is not increased more than necessary, a tendency that the brake is stepped on frequently, and a distance that is not sufficient for the preceding vehicle. The driving attributes are those who are good at driving, those who are bad at driving, people who are strong in driving safety, people who drive fuel efficiency, calm people, impatient people, people who are in a hurry, people who are feeling high , And other attributes based on driving behavior expressed from the skill, personality, and psychological state of the driver.

  The attribute acquisition unit 101 records a vehicle travel history from a sensor for detecting the vehicle speed and acceleration, and acquires the driving attribute by analyzing the travel history. Examples are given below.

  The attribute acquisition unit 101 determines whether the attribute is a gentle driving attribute or an impatient driving attribute as one of the driver attributes from the output of the acceleration sensor, thereby acquiring the subtle attribute and the impatient attribute. FIG. 2 shows the time characteristic of the output of the acceleration sensor, where (a) shows the characteristic for impatient driving and (b) shows the characteristic for adult driving. In the attribute acquisition unit 101, acceleration threshold values (+ a and -a) for determining whether the driving attribute is an impatient attribute or an adult attribute are set on the plus side and the minus side. As shown in FIG. 2 (a), in the impatient driving, the acceleration to the desired traveling speed is large and the distance between the preceding vehicle and the preceding vehicle being traveled is short, so the margin time from the deceleration of the preceding vehicle is shortened. Changes greatly, and the acceleration detected at times t1 and t2 exceeds the threshold. On the other hand, since the gentle driving accelerates gently and decelerates slowly, the acceleration of the own vehicle does not fluctuate greatly, and as shown in FIG. 2B, the acceleration is larger than the threshold value (−a) over the entire period. , And changes within a range smaller than the threshold value (+ a).

  And the attribute acquisition part 101 counts the frequency | count that the absolute value of the detected value of an acceleration sensor becomes larger than a threshold value, and when the counted frequency is more than predetermined number (for example, 5 times), it determines with an impatient attribute. And get driving attributes. Note that the attribute acquisition unit 101 may determine the attribute based on the time when the absolute value of the detected value of the acceleration sensor becomes larger than the threshold value, instead of the number of times that the absolute value of the detected value of the acceleration sensor becomes larger than the threshold value.

  Moreover, the attribute acquisition part 101 acquires the attribute (characteristic) of a vehicle. The attributes of the vehicle are attributes unique to the vehicle such as a vehicle type such as a normal car or a large car, weight, and displacement. Since the attribute is determined in advance according to the vehicle, the attribute acquisition unit 101 can acquire the attribute of the vehicle based on the preset vehicle information.

  The position information acquisition unit 102 acquires the current position of the user by receiving a radio wave transmitted from a positioning satellite via a GPS antenna (not shown). The destination setting unit 103 sets a destination based on a user operation in the navigation system. The display unit 104 is a display that displays a map around the current location or the destination, or displays a route searched by the control unit 20 on the data management apparatus 200 side, which will be described later, on the map. The data transmission / reception unit 105 is a transmission / reception unit for performing communication between the data management device 200 and the driving support device 100, and transmits a signal to the data management device 200 based on a control signal of the control unit 10, and also performs data management. A signal transmitted from the apparatus 200 is received and sent to the control unit 10.

 The control unit 10 is a control unit that controls the attribute acquisition unit 101, the position information acquisition unit 102, the destination setting unit 103, the display unit 104, and the data transmission / reception unit 105. When the control unit 10 acquires the current location information acquired by the position information acquisition unit 102 and the destination information set by the destination setting unit 103, the control unit 10 searches for a route from the current location to the destination. A signal for performing a route search is transmitted to the data management apparatus 200 via the transmission / reception unit 105. At this time, the control unit 10 includes the attribute acquired by the attribute acquisition unit 101 in addition to the current location information and the destination information in the transmission signal, and transmits information to the data management device 200.

  Further, the control unit 10 is provided with a storage unit (not shown) that stores the attributes acquired by the attribute acquisition unit 101, and the control unit 10 uses the attributes stored in the storage unit and the attribute acquisition unit 101. It is determined whether or not the acquired attribute is different. If the acquired attribute is different, the attribute is updated to a newly acquired attribute. The control unit 10 controls the attribute acquisition unit 101 to acquire attributes at a predetermined cycle. For example, it is assumed that a driver who normally drives in an unfamiliar manner notices that he / she cannot arrive by the desired arrival time in the middle of the route and starts driving quickly. In such a case, the control unit 10 initially acquires and stores an ambitious attribute, but changes from an ambitious attribute to an impatient attribute on the way.

  Next, each configuration of the data management apparatus 200 will be described first. The map information database 201 is a database that stores various types of information including map information such as map data, road data, and icon data to be displayed on the map used for guidance route search and guidance route guidance. The database also manages road information that is regularly updated and obtained, such as regulated traffic regulation information, and corresponding regulation information corresponding to the current traffic regulation. The attribute distribution storage unit 202 is a memory that stores where a traveling group of vehicles having the same or similar attributes is traveling on a map. Data is stored as needed based on information from the control unit 20. Update and record.

  The traveling group recorded by the attribute distribution storage unit 202 will be described with reference to FIG. FIG. 3 is a diagram for explaining the distribution of attribute traveling groups on a map. In addition, the upper direction on the paper surface of FIG. The traveling group of attribute A is indicated by a solid line, and the traveling group of attribute B is indicated by a dotted line. As shown in FIG. 3, a description will be given by taking as an example a map of an area where nine intersections exist and a road network is stretched around in a lattice pattern. For example, the attribute A indicates a traveling group of vehicles having an adult attribute, and the attribute B indicates a traveling group of vehicles having an impatient attribute, for example. On the road, a plurality of vehicles often travel as a group. And in the group of a plurality of vehicles, an attribute according to an individual vehicle or a driver exists. In this example, vehicles having a plurality of attributes are included within a predetermined range in the map, and an attribute having the largest number of vehicles is specified from among the plurality of attributes. In this example, the attribute having the largest number of vehicles is set as the attribute of the traveling group corresponding to the predetermined range.

  For example, at intersection C1, a traveling group with attribute B travels from the east toward the intersection C1, and another traveling group with attribute B travels from the intersection C1 toward the east and from the intersection C1 toward the south. doing. Also, for example, at intersection C2, a traveling group of attribute A travels from the west toward the intersection C2, from the intersection C2 toward the east, from the intersection C2 toward the west, and from the south toward the intersection C2. The traveling group of attribute B is traveling toward the south side from the intersection C2.

  Thus, the attribute distribution storage unit 202 stores the attributes specified by the control unit 20 as a traveling group of vehicles on the map. The traveling group does not necessarily have to be assigned to one attribute, and a plurality of attributes may be assigned to the traveling group.

  Returning to FIG. 1, the data transmission / reception unit 203 is a transmission / reception unit for performing communication between the driving support device 100 and the data management device 200, and transmits a signal to the driving support device 100 based on the control signal of the control unit 20. In addition, a signal transmitted from the driving support device 100 is received and sent to the control unit 20.

  The control unit 20 is a control unit that controls the map information database 201, the attribute distribution storage unit 202, and the data transmission / reception unit 203, and includes a traveling group setting unit 21, a route search unit 22, and a required time calculation unit 23. ing. The control unit 20 acquires the current value of each vehicle, the vehicle attribute, and the driver attribute via the data transmission / reception unit 203. The traveling group setting unit 21 refers to the map data in the map information database 201 and identifies the current value of the vehicle on the map and the attribute of the vehicle or the driver of the vehicle. The traveling group setting unit 21 similarly specifies the current value and attribute of the vehicle for a plurality of vehicles that are to be managed by the data management device 200. When the position and attribute of each vehicle are specified on the map, the traveling group setting unit 21 sets a traveling group for each attribute on the map.

  The traveling group setting unit 21 specifies an attribute (including a vehicle attribute or a driver attribute; the same applies hereinafter) related to a vehicle within a predetermined range including the current value from the current value of a certain vehicle. Then, an attribute that is the same as or similar to the attribute related to the starting vehicle is extracted. If the number of extracted attributes is equal to or greater than a predetermined number, the traveling group setting unit 21 sets a predetermined range as a traveling group, and sets a predetermined number of attributes or more as attributes of the traveling group. .

  The predetermined range is a range that is set according to the speed of the vehicle that is the starting point and the surrounding traffic conditions. For example, in a high speed area such as an expressway, the predetermined range may be set wide. Further, the predetermined number is a number set according to the density of the vehicle traveling around the starting vehicle. For example, when the vehicle is crowded, such as in a traffic jam, the number of specified attributes increases when a predetermined range is set in the vicinity of the traffic jam. Many may be set.

  The traveling group setting unit 21 can also predict the set traveling group distribution from the legal speed of each road managed by the map information database 201. In other words, the traveling group setting unit 21 identifies the legal speed of the road on which the vehicle is traveling from the current value of the starting vehicle, and uses the predicted time from the current time, so that the position of the starting vehicle after the predicted time can be known. . Further, for a vehicle included in a certain traveling group, the travel distance of the vehicle can be obtained from the legal speed and the expected time. Therefore, the traveling group setting unit 21 can set a future traveling group from the expected time and the legal speed of each road.

  And the traveling group setting part 21 performs the setting of the traveling groups as described above for a plurality of managed vehicles, so that a plurality of travelings according to attributes are displayed on the map as shown in FIG. Set the group.

  The route search unit 22 uses the map data of the map information database 201 and the data of the attribute distribution storage unit 202, based on the current value and the destination of the vehicle that is the target of the route search, and the attributes related to the vehicle. Search for recommended routes. When the control unit 10 receives a route search request signal from the driving support device 100 via the data transmission / reception unit 203, the control unit 10 acquires a current value and a destination of the vehicle that has transmitted the request signal, and attributes related to the vehicle. When the route search unit 22 performs a route search using the current value and the destination, the route search unit 22 searches for a route that reaches the destination by traveling in a traveling group having an attribute that is the same as or similar to the attribute related to the vehicle. To do.

  Hereinafter, a route search method by the route search unit 22 will be described with reference to FIG. 4A and 4B are diagrams for explaining the distribution of the traveling group having attributes corresponding to those in FIG. 3. FIG. 4A is a diagram for explaining intersections and roads, and FIG. 4B is a traveling at time t. The figure for demonstrating a group is shown, (c) shows the figure for demonstrating the driving | running | working group in the time t + x, (d) is a figure for demonstrating the recommended route actually searched.

  As shown in FIG. 4A, the vehicle B having the attribute B searches for a route from the current value (S1) to the destination (G1). At time t, as shown in FIG. 4B, each traveling group of attribute A and attribute B is set from the current value (S1) to the destination (G1). While the vehicle B is traveling, the traveling group shown in FIG. 4B is changed. Therefore, the control unit 20 predicts a traveling group at a future traveling point from the traveling distance to the destination (G1). For example, it is assumed that the traveling group after x hours from time t is set as shown in FIG. There are three possible routes from the current value (S1) to the destination (G1). The first route is a route (referred to as route 1) traveling from the current value to intersections C4, C7, C8 and C9 toward the destination (G1), and the second route is the intersection C4, C5 from the current value. , C6 and C9 and traveling to the destination (G1) (referred to as a route 2). The third route travels from the current value to the intersections C4, C5, C8 and C9 to the destination (G1). ) (Referred to as path 3). The route 1 is a route that can be traveled with the traveling group of the attribute B until the destination (G1) is reached. On the other hand, the routes 2 and 3 are not routes that can be traveled together with the traveling group of the attribute B until the destination (G1) is reached.

  Here, the relationship between the attribute and the traveling group and the recommended route will be described. In traffic engineering, it is known that vehicle crossover such as overtaking and changing lanes leads to a decrease in road capacity. In a situation where various driving actions are mixed on the road, that is, when various attributes exist in a predetermined area on the map, such a vehicle crossing is likely to occur. For example, a vehicle b of a driver (for example, a driver having an impatient attribute) who is not calm is traveling behind a vehicle a which is driven by a person who is strongly driven by safe driving (for example, a driver having an adult attribute). If the vehicle a is running with a wide inter-vehicle distance, the vehicle b gets frustrated because it wants to run with a car in front of it, and eventually overtakes the vehicle a. Especially in a heavy traffic situation, a single vehicle crossing invites the brakes of the following vehicle, and further induces the braking of the following vehicle, causing a deceleration wave to propagate, and the vehicle can stop completely at an upstream point. There is sex. Therefore, it is not sufficient to simply search for the shortest route in order to make the arrival time to the destination the shortest time. In this example, by searching for a route according to the attribute related to the vehicle as a recommended route, vehicles with the same attribute can travel in groups, so that it is difficult for the vehicle to be mixed as described above. The fastest route can be searched. In addition, by providing the recommended route to a plurality of vehicles, the traffic flow is smoothed.

  Returning to FIG. 4C, since the route 1 travels together with the traveling group having the same attribute as the vehicle as compared with the route 2 and the route 3, the route search unit 22 performs the operation shown in FIG. The route 1 is set as a recommended route as shown in FIG.

  The required time calculation unit 23 adds from the current value of the vehicle to the traveling group having the same attribute as the attribute related to the vehicle in addition to the required time for traveling on the recommended route searched by the route search unit 22. The required time or when the vehicle departs from the current value is calculated to be able to join the traveling group having the same attribute.

  The required time calculation unit 23 calculates the required time to reach the nearest traveling group having the same or similar attribute from the current value of the vehicle, the attribute relating to the vehicle, and the traveling group setting unit 21. The required time is calculated from the distance from the current value to the location of the traveling group and the legal speed of the road traveling to the traveling group. Further, the required time calculation unit 23 travels on the flow of the traveling group having the same or similar attributes at any time from the current value of the vehicle, the attribute relating to the vehicle, and the traveling group setting unit 21. Calculate what you can do. Since the distribution of the future traveling group is predicted by the traveling group setting unit 21, the time until the predicted traveling group having the same or similar attribute passes the current value or the vicinity of the current location is calculated. The departure time of the vehicle is calculated.

  Then, the control unit 20 transmits the recommended route searched by the route search unit 22 and the time calculated by the required time calculation unit 23 to the driving support device 100 via the data transmission / reception unit 23. The driving support apparatus 100 provides the driver with the recommended route and the required time displayed on the display unit 104 by a signal transmitted from the data management apparatus 200.

  Next, the control procedure of this example will be described with reference to FIGS. FIG. 5 shows a control procedure on the driving support apparatus 100 side, and FIG. 6 shows a control procedure on the data management apparatus 200 side in FIG. In step S1, the control unit 10 activates an application for route search. In step S <b> 2, the control unit 10 acquires position information of the current value of the vehicle by the position information acquisition unit 102. In step S <b> 3, the control unit 10 notifies the occupant that the destination is to be input, and determines whether the destination is input to the destination setting unit 103. When the destination is input and the destination is set in the destination setting unit 103, the process proceeds to step S4. On the other hand, if the destination has not been input, the process returns to the determination in step S3. The notification to the passenger may be performed again at the intersection of the intersection, or may be notified a plurality of times.

  In step S <b> 4, the control unit 10 reads out attributes related to the vehicle from a storage unit (not shown) that stores the attributes in the control unit 10. At this time, if no attribute is stored in the storage unit (not shown), an attribute preset as an initial value is acquired. Hereinafter, as an example of the attribute, an attribute of driving that is gentle and an attribute of driving that is impatient will be described. The control unit 10 detects acceleration at a predetermined sampling period by the acceleration sensor included in the attribute acquisition unit 101 (step S5), and whether or not the absolute value of the detected acceleration is equal to or greater than a preset acceleration threshold value. Is determined (step S6).

  If the detected acceleration is smaller than the threshold value, the attribute acquisition unit 101 acquires an adult attribute as an attribute relating to the vehicle (step S71). Further, when the attribute stored in the storage unit and the newly acquired attribute are different, the control unit 10 updates the new attribute. On the other hand, when the detected acceleration is equal to or greater than the threshold, the attribute acquisition unit 101 acquires an impatient attribute as an attribute relating to the vehicle (step S72). Further, when the attribute stored in the storage unit and the newly acquired attribute are different, the control unit 10 updates the new attribute.

  In step S8, the control unit 10 transmits the current value information acquired in step S2, the destination information acquired in step S3, and the attribute information acquired in steps S4 to S72 via data transmission / reception, A route search and a request signal for calculating the required time to the optimum traveling group are transmitted to the data management device 200. In step S400, as shown below, control processing is performed on the data management apparatus 200 side.

  As shown in FIG. 6, in step S <b> 401, the control unit 20 receives the current value and the target value of the vehicle and the attribute related to the vehicle via the data transmission / reception unit 203. In step S <b> 402, the traveling group setting unit 21 sets a traveling group on a map including a plurality of routes from the current value to the destination from the attribute distribution stored in the attribute distribution storage unit 202. Thereby, the control part 20 manages which driving group of which attribute exists in which place on the present road. In step S403, the route search unit 22 searches, for example, a route with the shortest distance from the received current value and destination and the map data in the map information database 201 as a normal route search.

  In step S404, the traveling group setting unit 21 predicts the route to the destination and the transit time around the route from the route searched in step S403, the legal speed of the route, and the traffic jam information, and the transit time. Based on the distance to the passing point, the future prediction of the traveling group at the predicted time is calculated. In step S405, the control unit 20 determines whether or not the first traveling group encountered in the searched route is the same as the traveling group having the attribute relating to the vehicle. When the first traveling group encountered is the same traveling group as the traveling group having the attribute related to the vehicle, the process proceeds to step S409, and the control unit 20 sets the searched route as the recommended route.

  On the other hand, when the traveling group encountered first is not the same traveling group as the traveling group having the attribute related to the vehicle, the process proceeds to step S406.

  In step S406, the control unit 20 determines whether or not the search by the route search unit 22 has been performed three times or more. If the search by the route search unit 22 is not three or more times, in step S407, the route search unit 22 searches for a route different from the route used in the determination in step S405, returns to step S404, and again The future driving group on the other route is calculated.

  On the other hand, when the number of searches by the route search unit 22 is 3 or more in step S406, the required time calculation unit 23 in step S408 has the shortest waiting time from the routes searched so far. The route and the required time that can be encountered with the traveling group having the same attribute are calculated. A route corresponding to the shortest waiting time is a recommended route.

  In step S409, the route search unit 22 determines the route set by the control process as a recommended route. In step S410, the control unit 20 transmits the required time via the data transmission / reception unit 203 when the recommended route is calculated.

  Returning to FIG. 5, in step S9, the control unit 10 receives the recommended route and the required time. In step S10, the control unit 10 displays the recommended route on the display unit 10, notifies the required time, and ends the control of this example.

  As described above, the present example sets a traveling group of vehicles on a map according to the attribute acquired by the attribute acquisition unit 101 and the current value of the vehicle of the attribute, and the traveling group corresponding to the acquired attribute. To find the recommended route from your current location to your destination. Thereby, since a plurality of vehicles run the run group corresponding to each attribute because a plurality of vehicles run the recommendation route, the flow of traffic can be made smooth. In addition, since the vehicle driver traveling on the recommended route can reduce driving stress caused by vehicles having different attributes, the vehicle driver can travel comfortably. In addition, it is possible to reduce the obstacles to comfortable running and the occurrence of traffic jams that occur when running different from the attribute.

  When the system like this example is not installed in the navigation system, as shown in FIG. 7A, the vehicle travels in a state where cars having various attributes are scattered on the road. As shown in FIG. 7 (b), the navigation system of this example can be made to travel together with a group of vehicles having corresponding attributes. FIG. 7A is a diagram for explaining the running state of the vehicle on the road in the conventional navigation system, and FIG. 7B is a diagram for explaining the running state of the vehicle on the road in the navigation system of this example. . The solid line indicates the attribute A vehicle, and the dotted line indicates the attribute B vehicle.

  In addition, in this example, in the data management device 200, based on the attribute relating to the vehicle and the current location of the vehicle, the vehicle traveling group is set on the map, and the traveling group having the same or similar attribute as the attribute of the certain vehicle is set. A recommended route to travel is searched and the recommended route is provided to the vehicle. Thereby, since the data management apparatus 200 of this example can manage a vehicle based on the attribute which concerns on a vehicle, according to the attribute which concerns on a vehicle, it can provide an optimal recommended route, and traffic Can be made smooth.

  Further, in this example, the driving support device 100 acquires an attribute relating to the vehicle, travels a traveling group having an attribute corresponding to the attribute, and displays a recommended route from the current location to the destination. Thereby, since the recommended route according to the attribute concerning each vehicle is provided to the driver, the route of the shortest time according to the attribute can be traveled.

  Further, in this example, the attribute acquisition unit 101 acquires driving attributes based on the travel history of the vehicle. As a result, data such as the vehicle speed and the steering angle that can be directly acquired from the vehicle is used as an influence on the driving behavior that appears from the skill, personality, and psychological state of the driver, so that the attribute can be determined with high accuracy.

  In this example, the required time from the current location to the traveling group corresponding to the attribute relating to the vehicle is calculated, and the departure time of the current location or the required time to the traveling group is provided as traveling information for arriving at the traveling group. . Accordingly, since the departure timing and the required time for entering the traveling group having the corresponding attribute to travel are provided, a driving operation for entering the traveling group such as a route change can be omitted.

  In this example, the attribute acquisition unit 101 acquires an attribute from the output of the acceleration sensor, but the attribute may be acquired using other means. For example, the attribute acquisition unit 101 captures the driver from a camera provided in the vehicle for detection of drowsiness, detects the number of times the driver looks away from the captured image, and acquires the attribute from the detected number of times. Also good. Alternatively, the attribute acquisition unit 101 detects a change in the driver's pulse rate, the degree of sweating, and the like using a biometric sensor provided in the vehicle, and acquires the psychological attribute of the driver from the detection data. May be.

  In this example, the recommended route may be searched and provided by adding the control processing in step S801 of FIG. FIG. 8 is a flowchart for explaining the control procedure of the navigation system according to the modification of this example. Steps S401 to S410 in FIG. 8 are the same as those in FIG.

  If the number of searches is three or more in step S406, in step S801, the control unit 20 determines that the route searched by the route search unit 22 has an attribute similar to the attribute acquired by the attribute acquisition unit 101. It is determined whether or not a traveling group is encountered. Here, similar attributes are, for example, an attribute that tends not to increase the vehicle speed more than necessary and an attribute that tends to take a sufficient distance from the preceding vehicle from the viewpoint of safe driving. Alternatively, the attribute acquisition unit 101 measures the frequency at which the acceleration exceeds a predetermined threshold (+ a and −a, see FIG. 2) from the output of the acceleration sensor, and according to the measured frequency, the frequency (multiple), the frequency The attribute is determined by dividing into (medium) and frequency (small). At this time, for example, the control unit 20 may determine that the frequency (many) and the frequency (medium) are similar attributes, and the frequency (many) and the frequency (small) may be similar attributes. Alternatively, for example, the control unit 20 may determine that the frequency (low) and the frequency (medium) are similar attributes, and may determine that the frequency (high) and the frequency (small) are not similar attributes.

  Note that a similar attribute is set in advance for a certain attribute and stored in the control unit 20. When a similar traveling group is encountered, a route that travels through the similar traveling group that has been encountered is determined as a recommended route in step S409. On the other hand, when a traveling group having similar attributes is not encountered, the process proceeds to step S408.

  As a result, this example can provide a recommended route that travels along a travel route with an attribute similar to the attribute related to the vehicle and reaches the purpose, so that even if there is no group travel of the same attribute around, You can start.

  In this example, when the traveling group setting unit 21 sets the traveling group, the attribute of one vehicle and the attribute of the other vehicle are similar, or the attribute of one driver and the other driving When the hand attributes are similar, the traveling group may be set by distributing similar attributes to the same traveling group. Thereby, since it can be set as a traveling group including the vehicle with a similar attribute, the range of a traveling group can be expanded and the flow of traffic can be made smooth.

  Note that the attribute acquisition unit 101 may acquire the attribute of the vehicle by acquiring information related to the use of the vehicle using the CAN communication for vehicles. As a result, vehicle specifications such as vehicle body length and power performance can be acquired as vehicle attributes for the influence on the driving behavior that appears from the skill, personality, and psychological state of the driver, so that the attributes can be distinguished with high accuracy. .

  In this example, the number of searches is three in step S406, but it may be two or four or more.

  In this example, the required time calculation unit 23 uses the current value of the vehicle, the attribute relating to the vehicle, and the traveling group setting unit 21 to reach the nearest traveling group having the same or similar attribute. In this case, if the vehicle is in the vicinity of a road where it is difficult to form a traveling group such as a low-grade road, the traveling group on the road where the traveling group such as the nearest main road is likely to be formed is calculated. The time required to identify and reach the identified traveling group may be calculated. A low-grade road may have difficulty in forming a traveling group due to a small amount of traffic, or data management by the data management device 200 may not be performed. Therefore, when the vehicle is near a low-grade road, in this example, a traveling group on a nearby main road may be specified.

  In this example, the driving support device is mounted on a vehicle, but may be mounted on a mobile phone. An acceleration sensor and a GPS are built in a mobile phone possessed by the driver. Then, the mobile phone executes an application related to the navigation system of the present example using a communication network by Internet access. When the application is activated, the GPS acquires information on the current position. When the user inputs the destination, a route guidance calculation request is transmitted to the data management center 200. Then, the mobile phone receives the recommended route sent from the data management center 200 and displays the route on the display screen. Thereby, the navigation system of this example can also be used with a mobile phone.

The attribute acquisition unit 101 corresponds to the “attribute acquisition unit” according to the present invention, the position acquisition unit 102 corresponds to the “position acquisition unit” according to the present invention, and the traveling group setting unit 21 corresponds to the “traveling group” according to the present invention. Corresponding to “setting means”, the route search unit 22 is “route search means” according to the present invention.
The required time calculation unit 23 corresponds to the “required time calculation unit” according to the present invention, a part of the control unit 20 corresponds to the “running information providing unit” according to the present invention, and the display unit 104 It corresponds to “display means” according to the invention.

DESCRIPTION OF SYMBOLS 100 ... Driving assistance device 101 ... Attribute acquisition part 102 ... Location information acquisition part 103 ... Destination setting part 104 ... Display part 105 ... Data transmission / reception part 10 ... Control part 200 ... Data management apparatus 201 ... Map information database 202 ... Attribute distribution memory Unit 203 ... Data transmission / reception unit 20 ... Control unit 21 ... Travel group setting unit 22 ... Route search unit 23 ... Required time calculation unit

Claims (5)

Attribute acquisition means for acquiring at least one attribute of driving attribute or vehicle attribute;
Position acquisition means for acquiring the current location of the vehicle;
According to the current location and the attribute, a traveling group setting means for setting a traveling group of vehicles on a map;
And a route searching means for searching a recommended route from the current position of the Target vehicle to reach the destination,
The traveling group setting means includes
When the attribute of one vehicle and the attribute of the other vehicle are similar, or when the attribute of one driver and the attribute of the other driver are similar, the similar attributes are Distributed in the same driving group,
Collecting at least one of the attributes of other vehicles different from the target vehicle or the attributes of the driver of the other vehicles and the current location of the other vehicle, and the traveling group for each road based on the current location of the other vehicle Set
Based on the attribute of the other vehicle included in the traveling group or the attribute of the driver of the other vehicle, the attribute of the traveling group is set,
The travel route search means includes:
The attribute acquired by the attribute acquisition unit and the attribute of the traveling group set by the traveling group setting unit are compared, and among the searched routes, the attribute of the target vehicle or the driver of the target vehicle A navigation system that searches for a route including a traveling group having the same attribute as the recommended route as the recommended route. The attribute acquisition means includes
The navigation system of claim 1, wherein the acquiring the attribute of the operation based on the travel history of the vehicle. Calculating means for calculating a required time from the current location to the traveling group corresponding to the attribute acquired by the attribute acquiring means;
Depending on the required time calculated by said calculation means, according to claim 1 or 2, characterized in that further comprising a travel information providing means for providing a recommended travel information is to reach the travel group Navigation system. An information providing device for presenting a recommended route to a vehicle,
Driving group setting means for setting a driving group of the vehicle on a map according to at least one of the attribute of driving by the driver or the attribute of the vehicle and the current value of the vehicle;
And route searching means for searching for a recommended route to reach the destination from the current value of the Target vehicle,
Providing means for providing the vehicle with a recommended route searched by the route search means;
The traveling group setting means includes
When the attribute of one vehicle and the attribute of the other vehicle are similar, or when the attribute of one driver and the attribute of the other driver are similar, the similar attributes are Distributed in the same driving group,
Collecting at least one of the attributes of other vehicles different from the target vehicle or the attributes of the driver of the other vehicles and the current location of the other vehicle, and the traveling group for each road based on the current location of the other vehicle Set
Based on the attribute of the other vehicle included in the traveling group or the attribute of the driver of the other vehicle, the attribute of the traveling group is set,
The travel route search means includes:
The attribute acquired by the attribute acquisition unit and the attribute of the traveling group set by the traveling group setting unit are compared, and among the searched routes, the attribute of the target vehicle or the driver of the target vehicle And searching for a route including a traveling group having the same attribute as the recommended route as the recommended route. A driving support device mounted on a vehicle,
Attribute acquisition means for acquiring at least one attribute of driving attribute or vehicle attribute;
Position acquisition means for acquiring the current location of the vehicle;
According to the current location and the attribute, a traveling group setting means for setting a traveling group of vehicles on a map;
And route searching means for searching for a recommended route to reach the destination from the current position of the Target vehicle,
Display means for displaying the recommended route,
The traveling group setting means includes
When the attribute of one vehicle and the attribute of the other vehicle are similar, or when the attribute of one driver and the attribute of the other driver are similar, the similar attributes are Distributed in the same driving group,
Collecting at least one of the attributes of other vehicles different from the target vehicle or the attributes of the driver of the other vehicles and the current location of the other vehicle, and the traveling group for each road based on the current location of the other vehicle Set
Based on the attribute of the other vehicle included in the traveling group or the attribute of the driver of the other vehicle, the attribute of the traveling group is set,
The travel route search means includes:
The attribute acquired by the attribute acquisition unit and the attribute of the traveling group set by the traveling group setting unit are compared, and the attribute of the target vehicle or the driver of the target vehicle among a plurality of searched routes A driving support device that searches for a route including a traveling group having the same attribute as the recommended route as the recommended route.

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