JP4694397B2 - Guidance system - Google Patents

Description

  The present invention relates to a guidance system. More specifically, the present invention relates to a system for guiding an avoidance method when traveling on a regulated road (one-way road, vehicle type limitation, vehicle weight limitation, dangerous material loading limitation, etc.).

In order to drive vehicles suitable for the road width, structure and surrounding environment, there are roads with regulatory signs. Entering a road with this regulatory sign may cause an accident and violate the law. A technique for calling attention to a vehicle that is about to enter a road on which this regulatory sign is installed has been proposed from the prior art.
For example, Patent Document 1 discloses an apparatus in which a plurality of vehicle detectors are installed on a one-way road, a traveling direction is determined from an output of the detection, and it is determined whether the vehicle is running backward. The driver can confirm whether the vehicle is running backward on the one-way road by confirming the determined result.
JP-A-10-269492

In the above invention, the driver can know that he / she is running backward on the one-way road, but he cannot know the subsequent countermeasures, that is, the exit method from the one-way road. Inverse driving on a one-way road by mistake generally occurs in a place where the driver is not familiar with the land. Therefore, if an appropriate countermeasure after knowing the reverse running is not known, the driver may fall into unnecessary confusion.
Therefore, an object of the present invention is to read out information related to a regulated road when the vehicle enters the regulated road, and to guide a method for the vehicle to avoid the regulated road.

  In order to solve the above problems, the present invention has the following configuration. That is, the first configuration of the present invention includes a storage means for storing map data including restriction information relating to a road defined between the first and second intersections, a current state of the vehicle, and the restriction information. In comparison, when the current state of the vehicle violates the regulation information, the guidance system includes guidance means for guiding a violation avoidance method.

  According to the first configuration, it is compared whether or not the vehicle that has entered the regulated road violates the regulation information, and if it is violated, the avoidance method is guided. The driver who has received guidance on the avoidance method can quickly exit by moving the vehicle according to the avoidance method.

According to a second configuration of the present invention, in the first configuration, the guide unit calculates a distance from the current position of the vehicle to the first and second intersections, and another road from the intersection near the current position of the vehicle. Guide the route to exit.
By calculating the distance from the current position of the vehicle to the first intersection and the second intersection connected to the regulated road, it is possible to guide an intersection that is close to the vehicle. Thus, the driver can promptly leave the vehicle that has entered the regulated road.

According to a third configuration of the present invention, in the second configuration, the storage unit further stores road width data and vehicle length data, and the guide unit stores the road based on the width data and the vehicle length data. In the case where the vehicle can be reversed, it is determined whether the vehicle can be reversed when the distance from the current position of the vehicle to the intersection on the intrusion side is shorter than the distance to other intersections and the vehicle is determined to be capable of being reversed. To do.
When the width data is longer than the vehicle length data and other conditions are met, the vehicle can be reversed in the road. If the vehicle can be turned to a nearby intersection by reversing the vehicle, the vehicle can exit the restricted road without traveling in the back. That is, safety can be improved because the vehicle can be withdrawn during normal driving.

According to a fourth configuration of the present invention, in any one of the first to third configurations, the restriction information is at least one of one-way, vehicle type restriction, vehicle height restriction, vehicle weight restriction, and dangerous goods loading restriction.
By providing information on one-way traffic, vehicle type restriction, vehicle height restriction, vehicle weight restriction, and dangerous goods loading restriction in the restriction information, this guidance system can be applied to these restriction roads.

According to a fifth configuration of the present invention, in the first configuration, when a bridge or other specific element that causes the restriction exists on the road, the guide means performs guidance so as to avoid the specific element.
As a result, there is an intersection to exit the restricted road immediately before a specific element (such as a bridge or a height-restricted structure), and even when the vehicle is approaching that specific element, it passes through that specific element. Guidance to turn back the road that has passed can be provided without performing guidance.

  FIG. 1 is a block diagram of a guidance system 10 used in an embodiment of the present invention. FIG. 2 is a flowchart for explaining the operation of the guidance system. FIG. 3 is a diagram showing the arrangement of vehicles when entering a regulated road (one-way road). In FIG. 3, reference numeral 201 denotes a vehicle on which the guidance system 10 is mounted. Reference numeral 202 is a one-way restriction sign, reference numeral 203 is a white line, reference numeral 204 is an intrusion-side intersection, reference numeral 205 is another intersection, and reference numeral 206 is a restriction road. The vehicle 201 travels in a regulated road from the intrusion-side intersection 204 toward another intersection 205.

In FIG. 1, the guidance system 10 includes a control unit 11, a navigation unit 20, a guidance unit 31, a calculation unit 32, and a storage unit 40.
The control unit 11 includes a CPU 12. Each element constituting the driving support system 10 is connected to the CPU 12 via a bus and is controlled. The CPU 12 controls each element by reading and executing the control program stored in the control program storage area 41 of the storage unit.

  The navigation unit 20 includes a navigation system 21, a GPS receiver 22, a beacon receiver 23 and an FM multiplex receiver 24, a display unit 25, an operation unit 26, a speaker unit 27, various sensors (such as a gyro sensor) 28, and the like. The navigation system 21 performs overall control of other elements provided in the navigation unit 20. The GPS receiver 22 receives a signal output from a GPS satellite via a GPS antenna, and supplies the current vehicle position and vehicle direction to the navigation. The display unit 25 is a device that displays the contents of navigation, and a liquid crystal monitor or the like is used. The operation unit 26 is a device for operating navigation. The speaker unit 27 is a device that conveys a voice such as navigation guidance or a warning.

The comparison unit 31 compares the current state of the vehicle with the regulation information and determines whether there is a violation. The comparison method varies depending on the content of the regulatory information. For example, if the restriction information is information related to one-way traffic, the direction of the vehicle and the direction of traffic on the one-way road are compared to determine whether the vehicle is traveling backward on the one-way road. If the restriction information is information related to the weight-limited road, it is determined whether the total weight of the vehicle (including the load and the weight of a person) exceeds the weight limit. As a result of the comparison, if the current state of the vehicle violates the regulation information, a message to that effect is sent to the guide unit 32.
The guide unit 32 acquires information related to the violation of the regulation information sent from the comparison unit 31, and guides the driver that the current state of the vehicle is a violation of the regulation information. As the guidance method, it may be displayed on the screen of the display unit 25 that the violation has occurred, or the speaker unit 27 may be informed of the violation using voice.
The computing unit 33 computes the distance from the current position of the vehicle to the intersection connected to the regulated road when the vehicle enters the regulated road. In the calculation method, the calculation unit 33 uses the road data 421, the first intersection data 423, and the second intersection as data regarding the regulated road where the vehicle is present, the first intersection and the second intersection connected to the regulated road. Read from data 424. Then, the distance from the current position of the vehicle to the first intersection and the distance to the second intersection are calculated. It is possible to quickly exit from the regulated road by the guidance unit 32 guiding the calculated intersection as the exit route.

As the storage unit 40, a general storage medium such as a DVD or CD-ROM, a storage device such as a hard disk, or the like is used. The storage unit 40 includes a control program storage area 41 and a map data storage area 42.
The control program storage area 41 stores a control program for operating the CPU 12.
The map data storage area 42 stores map data used for navigation. This map data is composed of general map data, and includes, for example, road distance and width, coordinates of intersections and railroad crossings, coordinates of road markings, and the like.
The map data storage area 42 includes road data 421, regulation information data 422, first intersection data 423, and second intersection data 424.
The road data 421 is data relating to the position and length of the road and includes data relating to the regulated road. Data regarding the regulated road is associated with the regulated information data 422.
The restriction information data 422 is data relating to road restriction information, and stores restriction information according to the structure of the road, the environment around the road, and the like. The restriction information on the road is not particularly limited, but various restriction information such as one-way traffic, vehicle type restriction, vehicle height restriction, vehicle weight restriction, and dangerous goods loading restriction is stored.

The regulation information regarding one-way traffic is regulation information that limits the traveling direction of the regulated road. The restriction information related to the vehicle type restriction is restriction information such as a large passenger car closed, and is restriction information restricted according to the vehicle type. The restriction information regarding the vehicle height restriction is restriction information for restricting the height of the vehicle including the luggage. The restriction information related to the vehicle weight restriction is restriction information that restricts the passage of the vehicle, the luggage, the person, etc. by the total weight. The restriction information regarding the dangerous substance loading restriction is restriction information for restricting the passage of vehicles loaded with dangerous substances such as explosives and poisonous substances.
The first intersection data 423 and the second intersection data 424 are data relating to intersections connected before and after the restricted road, and include data relating to the positions of the intersections. This data is an index when a vehicle that has entered the regulated road exits.

Next, operation | movement of the guidance system 10 is demonstrated using the flowchart of FIG.
The vehicle starts traveling (step 1), and it is determined whether or not the current position of the vehicle exists at the position of the regulated road on the map data (step 3). When traveling on a regulated road (step 3: Y), map data is stored for the regulation information associated with the regulated road (regulation information relating to a one-way road and the direction to be passed is determined) Read from area 42 (step 5). Next, it is determined whether the read one-way direction should be reversed. When the vehicle runs backward on the one-way road (step 7: Y), the process proceeds to the next step. On the other hand, if the vehicle is not traveling backward in one way, the process is terminated.
When it is determined that the vehicle is traveling backward on the one-way road, the first intersection data 423 and the second intersection data 424 associated with the one-way road are read out, and the first intersection data 423 and the second intersection data 424 are read from the current position of the vehicle on the one-way road. The distance to the first intersection and the distance to the second intersection are calculated (step 9). Then, an intersection that is closest to the current position of the vehicle is selected (step 11). The driver will be guided to the last selected intersection (step 13).

  FIG. 3 is a diagram showing an arrangement when a vehicle equipped with the guidance system 10 runs backward on the one-way street 206. When the vehicle 201 receives guidance that the vehicle is violating the regulation information at the position shown in the figure, the intersection 204 is guided because the distance to the intersection 204 is shorter. The driver travels back on the one-way road and exits from the one-way road 206.

  FIG. 4 is a block diagram of a guidance system 100 which is another embodiment. FIG. 5 is a flowchart for explaining the operation of the guidance system 100. FIG. 6 is a diagram showing an arrangement when a vehicle 301 equipped with the guidance system travels on a weight-restricted road 306. In FIG. 6, reference numeral 301 denotes a vehicle, reference numeral 302 denotes a restriction sign (a sign indicating weight restriction), reference numeral 303 denotes a white line, 304 denotes a first intersection, reference numeral 305 denotes a second intersection, reference numeral 306 denotes a weight restriction road, reference numeral Reference numeral 307 denotes a bridge with a weight limit.

In FIG. 4, the same elements as those of FIG.
The guidance system 100 includes a determination unit 34. The determination unit 34 reverses whether the vehicle can be reversed within the restricted road. If the vehicle can be reversed, it is not necessary to travel in the back to an intersection that is close to any of the intersections connected to the regulated road. In the determination method, data relating to the width of the regulated road and data relating to the length of the vehicle are stored in the storage unit 50. Then, it is determined whether or not the vehicle can be reversed by the driving operation of the driver. As a reversible condition, the width of the regulated road needs to be longer than the length of the vehicle.
Note that the total weight of the vehicle (the weight obtained by adding the weight of the baggage and the person to the weight of the vehicle), which is a material for determining whether the vehicle can travel on the weight-restricted road 306, is input in advance from the operation unit 26. The input data regarding the total weight of the vehicle is stored in the storage unit 40.
The storage unit 50 includes width data 525 in the map data storage area 52. The width data 525 is stored in association with the road data 421.
The storage unit 50 includes a vehicle length data storage area 53. The vehicle length data is data indicating the total length of the vehicle on which the guidance system 100 is mounted. This data can be directly input from the operation unit 26.
The road data 421 in the map data storage area 52 also includes data related to the position of specific elements (bridges, height-restricted structures, etc.) associated with the restriction information data 422.

With reference to the flowchart of FIG. 5, the operation of the vehicle equipped with the guidance system 100 leaving the restricted road will be described.
The vehicle starts traveling (step 21), and it is determined whether or not the current position of the vehicle exists at the position of the regulated road on the map data (step 23). When traveling on a restricted road (step 23: Y), the restriction information associated with the restricted road (restriction information relating to weight restriction and information relating to the weight that the vehicle can pass) is displayed in the map data storage area 42. (Step 25). Next, the read passable weight is compared with the pre-input total weight of the vehicle to determine whether the vehicle violates the weight limit (step 27). When the total weight of the vehicle violates the weight limit (step 27: Y), the process proceeds to the next step. On the other hand, when the weight limit is not violated (step 27: N), the process ends as it is.
When the weight limit is violated, it is determined by reading the road data 421 whether there is a specific element (bridge) on the running road. When a bridge exists (step 29: Y), the process proceeds to the next step. When there is no bridge (step 29: N), the first intersection data 423 and the second intersection data 424 are read, and the calculation unit 33 calculates the distance from the current position of the vehicle (step 31). As a result of the calculation, if the intrusion-side intersection is close (step 33: Y), the intrusion-side intersection is guided (step 43). If the intersection on the intrusion side is not close (step 33: N), another intersection is guided (step 45).
In step 29, when there is a bridge, the width data 525 is read from the map data storage area 52 (step 35). Subsequently, the vehicle length data is read from the vehicle length data storage area 53 (step 37). Then, it is determined whether the read width data 525 is longer than the vehicle length data and can be reversed by the driving operation of the driver. If inversion is possible (step 39: Y), the intersection on the intrusion side is guided (step 43). On the other hand, even when the vehicle cannot be reversed (step 39: N), the intruding side intersection is guided (step 41), but at this time, the vehicle exits in the back travel.

  FIG. 6 is a diagram showing an arrangement when a vehicle equipped with the guidance system 100 travels in violation of the weight limit road 306. When it is determined that the vehicle 301 is in violation of the regulatory information at the point A and it is determined that the vehicle 301 can be reversed, the vehicle 301 is reversed and travels toward the nearby intersection 304, and then from the weight-limited road 306. Will leave. On the other hand, the vehicle 301 is informed that the vehicle 301 violates the regulation information at the point B, and even when the intersection 305 is near, the vehicle 307 cannot pass through the bridge 307. Therefore, the vehicle 301 is reversed and returned to the intersection 304.

  As described above, when the vehicle violates the regulation information on one-way traffic and vehicle weight restriction, the means to avoid from the road has been explained, but other regulation information (vehicle type restriction, vehicle height restriction, danger Similarly, it is possible to detect violations of regulations and guide the avoidance of violations with respect to (loading restrictions).

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

FIG. 1 is a block diagram of a guidance system used in the embodiment. FIG. 2 is a flowchart for explaining the operation of the guidance system. FIG. 3 is a view showing the arrangement of vehicles when entering a one-way road. FIG. 4 is a block diagram of a guidance system according to another embodiment. FIG. 5 is a flowchart for explaining the operation of the guidance system. FIG. 6 is a diagram showing the arrangement of vehicles when traveling on a weight-limited road.

Explanation of symbols

10 100 guidance system, 31 comparison unit, 32 guidance unit, 33 calculation unit, 34 determination unit, 40 50 storage unit

Claims (5)

Storage means for storing map data including restriction information relating to a road defined between the first and second intersections;
A guide means for comparing a current state of the vehicle with the restriction information and guiding a violation avoidance method when the current state of the vehicle violates the restriction information ;
The guide means calculates a distance from the current position of the vehicle to the first and second intersections, and guides a route exiting to another road via an intersection close to the current position of the vehicle (traffic regulations). Except for violations)
A guidance system characterized by that . The regulatory information is one way,
The storage means further stores width data of the road and length data of the vehicle,
The guide means determines whether or not the vehicle can be rotated on the road based on the width data and the vehicle length data, and guides that the vehicle can be reversed when it is determined that the vehicle can be reversed. The guidance system according to claim 1, wherein when it is determined that the vehicle cannot be reversed, the vehicle travels backward. The guidance system according to claim 1, wherein the restriction information is at least one of a vehicle type restriction, a vehicle height restriction, a vehicle weight restriction, and a dangerous goods loading restriction. The storage means further stores width data of the road and length data of the vehicle,
The guide means determines whether or not the vehicle can rotate on the road based on the width data and the vehicle length data, and the distance from the current position of the vehicle to an intruding intersection is a distance from another intersection. The guidance system according to claim 3 , wherein when the vehicle is shorter than the distance and it is determined that the vehicle can be reversed, guidance is provided to the effect that the vehicle can be reversed.   The guidance system according to claim 1, wherein when there are a bridge or other specific element that causes the restriction on the road, the guide unit performs guidance so as to avoid the specific element.

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