JP6731622B2 - Vehicle reverse running prevention device, vehicle reverse running prevention method, and program - Google Patents

Description

The present disclosure relates to a vehicle reverse running prevention device, a vehicle reverse running prevention method, and a program.

In recent years, as the structure of service areas such as expressways or parking areas (SA/PA) has become more complicated and the drivers have become older, SA/PA has been introduced through the introduction route for entering SA/PA from main lines such as highways. The number of cases where a vehicle entering a PA runs backwards from the SA/PA to the introduction road when returning to the main line is increasing.

FIG. 1 is an explanatory diagram of reverse running in SA/PA. As an example of reverse running, when a vehicle traveling on the main line T is parked in the parking area P and then returns to the main line T by mistake, the vehicle travels in the direction of the arrow A1 on the introduction road or returns to the main line T. After traveling, the vehicle may travel in a direction different from the direction D of the main line T as indicated by arrow A2. Such reverse running can lead to serious traffic accidents such as head-on collisions and is extremely dangerous. As a countermeasure against reverse running, an in-vehicle device for preventing the vehicle from running backward from SA/PA to the introduction road has been proposed (see Patent Document 1).

JP, 2011-100346, A

The vehicle-mounted device described in Patent Document 1 determines that the host vehicle is traveling in the reverse direction when the position of the host vehicle is within the reverse traveling determination range within the SA/PA and the host vehicle has traveled a predetermined distance. And warn. Here, the reverse running determination range is a range in which it is determined whether or not the host vehicle is running in reverse. However, there is a problem that a very high-level calculation process and a dedicated database are required to calculate the reverse run determination range. Furthermore, there is a problem that the vehicle-mounted device may give an erroneous warning because the calculation process is very sophisticated.

Further, the vehicle-mounted device described in Patent Document 1 calculates the reverse running determination range with the branch point between the introduction road and the main line as a reference. Therefore, when the driver of the vehicle just after entering the SA/PA searches the parking space near the entrance of the SA/PA and the vehicle runs in the reverse running determination range, the in-vehicle device gives an erroneous warning. There is a problem that it may end up. Furthermore, when the structure of SA/PA is complicated, the vehicle-mounted device cannot set the reverse running determination range and thus cannot give a warning. There is a problem of doing.

An object of the present disclosure is to provide an improved vehicle reverse running prevention device, a vehicle reverse running preventing method, and a program for preventing the reverse running of the host vehicle.

A vehicle reverse running prevention device according to an aspect of the present disclosure includes a position determination unit that determines whether a vehicle is located in a service area or a parking area, and whether the vehicle has transitioned from a parking state to a traveling state. And the position determination unit determines that the vehicle is located in a service area or a parking area, and the traveling state determination unit determines that the vehicle has transitioned from the parking state to the traveling state. In the case of, if the attention determination unit for determining whether or not the condition for performing the attention to prevent reverse running to the occupant of the vehicle is satisfied, and if it is determined that the condition is satisfied, And a warning execution unit that executes the warning , wherein the travel distance of the vehicle from a predetermined timing when the vehicle is parked is determined based on the service area or the parking area. If the above condition is exceeded, the alerting determination unit determines that the condition is satisfied .

A vehicle reverse running prevention method according to an aspect of the present disclosure includes a step in which a position determination unit determines whether or not a vehicle is located in a service area or a parking area, and a traveling state determination unit in which the vehicle is in a parked state. determining whether the shift to the running state from the vehicle is determined to be located in the service area or the parking area, and, if the vehicle is determined to have migrated from the parking state to the running state, attention The awakening determination unit determines whether or not a condition for performing a caution to prevent reverse running to the occupant of the vehicle is satisfied, and a caution is given when the condition is determined to be satisfied. In the step of determining whether or not the condition is satisfied , the alert execution unit includes a step of performing the alert, and the travel distance of the vehicle from a predetermined timing when the vehicle is in the parked state is When the first distance determined based on the service area or the parking area is exceeded, the attention calling determination unit determines that the condition is satisfied .

A program according to an aspect of the present disclosure includes a step of determining whether a vehicle is located in a service area or a parking area by a computer included in a vehicle reverse running prevention device, and transitioning the vehicle from a parking state to a traveling state. If it is determined that the vehicle is located in the service area or the parking area, and it is determined that the vehicle has transitioned from the parking state to the traveling state, The step of determining whether or not the condition for executing the reminder for reverse running prevention is satisfied, and the step of executing the reminder if it is determined that the condition is satisfied. In the step of determining whether or not the condition is satisfied, a first distance in which a traveling distance of the vehicle from a predetermined timing when the vehicle is parked is determined based on the service area or the parking area. When it exceeds, it is determined that the above condition is satisfied, and the configuration is adopted.

According to the present disclosure, it is possible to provide an improved vehicle reverse running preventing device, a vehicle reverse running preventing method, and a program for preventing the reverse running of the host vehicle.

FIG. 1 is an explanatory diagram of reverse running in SA/PA. FIG. 2 is a configuration diagram of the vehicle reverse running prevention device according to the first embodiment. 3 is a flowchart showing an example of the operation of the vehicle reverse running prevention device according to the first embodiment. 6 is an example of a display screen displayed by the display unit during parking. It is an example of a reminder screen that is displayed on the display unit and calls attention. 7 is another example of a warning screen displayed on the display unit to call attention. 9 is a flowchart showing an example of the operation of the vehicle reverse running prevention device according to the second embodiment. It is a figure which shows an example of the hardware constitutions of a computer.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

(First embodiment)
FIG. 2 is a configuration diagram of the vehicle reverse running prevention device 1 according to the first embodiment. The vehicle reverse running prevention device 1 includes a control unit 2, a display unit 3, a map information storage unit 4, and a flag storage unit 5.

The control unit 2 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU, for example, reads out a program corresponding to the processing content from the ROM, expands the program in the RAM, and centrally controls the operation of each block of the control unit 2 in cooperation with the expanded program. The control unit 2 includes an ACC state detection unit 6, a shift lever state detection unit 7, a vehicle speed detection unit 8, a traveling state determination unit 9, a traveling distance calculation unit 10, a traveling time calculation unit 11, and a reverse signal detection. It functions as the unit 12, the vehicle position calculation unit 13, the position determination unit 14, and the attention determination unit 15.

The ACC state detection unit 6 detects whether or not the vehicle is powered on. In one example, when the car navigation system is powered on at the same time that the vehicle is powered on, the ACC state detection unit 6 detects whether the car navigation system is powered on, Detects whether the vehicle is powered on.

The shift lever state detection unit 7 detects the state of the shift lever of the vehicle. The state of the shift lever is, for example, parking (P), drive (D), and reverse (R). In one example, the shift lever state detection unit 7 detects the state of the shift lever of the host vehicle by acquiring a signal indicating the state of the shift lever from an ECU (not shown) included in the host vehicle.

The vehicle speed detector 8 detects the speed of the vehicle. In one example, the vehicle speed detection unit 8 detects the speed of the host vehicle based on the pulse received by the car navigation system every time the host vehicle travels a predetermined distance. In another example, the vehicle speed detection unit 8 detects the speed of the own vehicle by acquiring a signal indicating the vehicle speed from an ECU (not shown) included in the own vehicle. In another example, the vehicle speed detection unit 8 detects the speed of the own vehicle based on the change in the position of the own vehicle acquired from the car navigation system.

The traveling state determination unit 9 determines whether or not the host vehicle has transitioned from the parking state to the traveling state. In one example, the traveling state determination unit 9 determines, based on the information acquired from the ACC state detection unit 6 indicating whether or not the vehicle is powered on, when the vehicle is powered on. It is determined that the vehicle is parked.

In one example, the traveling state determination unit 9 determines that the host vehicle is in the parked state when the determination condition based on the shift lever state is satisfied. Here, the determination condition based on the shift lever state is that the information indicating the state of the shift lever of the vehicle acquired from the shift lever state detection unit 7 indicates parking (P).

In one example, the traveling state determination unit 9 determines that the host vehicle is in the parked state when the determination condition based on the vehicle stop time is satisfied. Here, the determination condition based on the vehicle stop time is a condition that the first time has elapsed while the speed of the host vehicle is less than the first speed. Here, the first speed and the first time are arbitrary predetermined speeds and times in which the own vehicle can be considered to be in the parked state. For example, the first speed is an arbitrary speed of 1 km/h or less, and the first time is 10 minutes. For example, the traveling state determination unit 9 determines whether or not the determination condition based on the vehicle stop time is satisfied based on the information indicating the speed of the host vehicle acquired from the vehicle speed detection unit 8. In addition, in one example, the traveling state determination unit 9 determines that the vehicle has transitioned to the traveling state when the speed of the vehicle exceeds the first speed.

The travel distance calculation unit 10 calculates the travel distance of the host vehicle from the time when the host vehicle was last parked. In one example, the travel distance calculation unit 10 calculates the travel distance of the host vehicle from the time when the host vehicle was last parked by integrating the speed from the time when the host vehicle was last parked. To do. In another example, the traveling distance calculation unit 10 calculates the traveling distance of the host vehicle from the time when the host vehicle was last parked, based on the coefficient of the vehicle speed pulse. In one example, the traveling distance calculation unit 10 determines the time when the own vehicle was last in the parking state, based on the information indicating whether the own vehicle acquired in the traveling state determination unit 9 is in the parking state.

The travel time calculation unit 11 calculates the time that the host vehicle has continuously traveled up to the present speed at the second speed or higher. In one example, the traveling time calculation unit 11 includes a time stamp storage unit (not shown), and based on the information indicating the speed of the own vehicle acquired from the vehicle speed detection unit 8, the own vehicle becomes less than the second speed. When the time stamp is updated, the time stamp is updated, and the difference between the time indicated by the time stamp and the current time is calculated to calculate the time that the vehicle has continued to travel at the speed equal to or higher than the second speed. .. The second speed is an arbitrary predetermined speed that is higher than the first speed, and is, for example, 10 kilometers per hour.

The reverse signal detector 12 detects the reverse signal of the host vehicle. In one example, the reverse signal detection unit 12 obtains a signal indicating whether or not the state of the shift lever is reverse (R) from an ECU (not shown) included in the own vehicle, so that the reverse signal of the own vehicle is obtained. To detect.

The own vehicle position calculation unit 13 calculates the position of the own vehicle. In one example, the own vehicle position calculation unit 13 calculates the position of the own vehicle based on the information indicating the position of the own vehicle acquired from the car navigation system including the position measurement means such as GPS.

The position determination unit 14 determines whether the host vehicle is located in SA (service area) or PA (parking area) (SA/PA). In one example, the position determination unit 14 determines whether or not the host vehicle is located in SA/PA by determining whether or not the host vehicle is within the range defining SA/PA. For example, if the value of the SA/PA identification flag set by the locator (not shown) included in the car navigation system when the vehicle is located in SA/PA is TRUE, the position determination unit 14 determines that the vehicle is It is determined to be located in SA/PA. The position determination unit 14 may obtain the range defining SA/PA based on the SA/PA internal road data defining SA/PA, or based on the SA/PA polygon defining SA/PA. , SA/PA may be defined as a range.

In one example, when the road on which the vehicle is traveling is specified, the position determination unit 14 obtains the information indicating the position of the vehicle acquired from the vehicle position calculation unit 13 and before the vehicle enters SA/PA. It is determined that the host vehicle is located in SA/PA based on the road that has traveled. As a result, even if the SA/PA has a complicated structure such as a hierarchical structure in which the SA/PA and the general road are vertically stacked, the position determination unit 14 causes the position determination unit 14 to position the own vehicle at the SA/PA. Whether or not to do so can be determined more accurately.

If the position determination unit 14 determines that the own vehicle is located within the SA/PA and the traveling state determination unit 9 determines that the own vehicle has transitioned from the parking state to the traveling state, the alerting determination unit 15 determines It is determined whether or not a condition for executing a reminder to the occupant (for example, a driver) of the vehicle to pay attention to the traveling direction (a reminder to prevent reverse running) is satisfied.

In one example, when the determination condition based on the traveling direction is satisfied, the alerting determination unit 15 determines that the condition for performing the alert is not satisfied. Here, the determination condition based on the traveling direction is a condition that the vehicle is traveling backward. If your vehicle is backing up, there is a possibility that you will travel backwards due to parking, etc.Therefore, it is unlikely that your vehicle will join the main line as it is, so you can think that it is not necessary to call attention. is there. For example, the alerting determination unit 15 determines whether or not the determination condition based on the traveling direction is satisfied based on whether or not the reverse signal is acquired from the reverse signal detection unit 12.

In one example, when the determination condition based on the travel distance is satisfied, the alert determination unit 15 determines that the condition for performing the alert is satisfied in the host vehicle that has transitioned to the traveling state. Here, the determination condition based on the traveling distance is a condition that the traveling distance of the own vehicle from the time when the own vehicle was last in the parking state exceeds the first distance. Here, the first distance is an arbitrary distance determined based on SA/PA, which can be considered to drive from the parking position for the first time when the vehicle exits SA/PA. The first distance is, for example, a predetermined ratio (for example, 30% to 50%) of the distance between the SA/PA entrance and the exit acquired from the map information storage unit 4. For example, the attention calling determination unit 15 satisfies the determination condition based on the traveling distance based on the information indicating the traveling distance of the own vehicle from the time when the own vehicle was last parked, which is acquired from the traveling distance calculation unit 10. Is determined.

In one example, when the determination condition based on the travel time is satisfied, the alerting determination unit 15 determines that the condition for alerting is satisfied in the host vehicle that has transitioned to the running state. Here, the determination condition based on the traveling time is a condition that the time during which the host vehicle continuously travels at the speed equal to or higher than the second speed exceeds the second time. Here, the second speed and the second time are arbitrary predetermined speeds and times at which the own vehicle can be considered to have started moving. For example, the second speed is 10 kilometers per hour and the second time is 3 seconds. For example, the alerting determination unit 15 determines whether or not the determination condition based on the travel time is satisfied based on the information indicating the speed of the own vehicle acquired from the travel time calculation unit 11.

In one example, when the determination condition based on the vehicle speed is satisfied, the alerting determination unit 15 determines that the condition for alerting is satisfied in the host vehicle that has transitioned to the traveling state. Here, the determination condition based on the vehicle speed is a condition that the speed of the host vehicle acquired from the vehicle speed detection unit 8 exceeds the third speed. In one example, the third speed is an arbitrary predetermined speed that is higher than the first speed and the second speed, and it can be considered that the own vehicle is likely to join the main line from now on. It's speed. The third speed is, for example, 30 kilometers per hour. For example, the alerting determination unit 15 determines whether or not the determination condition based on the vehicle speed is satisfied based on the information indicating the speed of the host vehicle acquired from the vehicle speed detection unit 8.

In one example, when the determination condition based on the position is satisfied, the alert determination unit 15 determines that the condition for performing the alert is satisfied in the host vehicle that has transitioned to the traveling state. Here, the position-based determination condition is a condition that the distance between the position of the host vehicle and the SA/PA entrance/exit becomes equal to or less than the second distance. Here, the second distance is an arbitrary distance at which the own vehicle approaching the SA/PA can be considered to leave the SA/PA, and is, for example, 50 m. For example, the alerting determination unit 15 determines whether or not the position-based determination condition is satisfied, based on the distance between the vehicle position and the SA/PA entrance/exit acquired from the vehicle position calculation unit 13.

The display unit 3 includes a display device and displays a caution screen on the display device when the caution determination unit 15 determines to execute the caution. When the alerting determination unit 15 determines that the alerting determination is to be performed, the display unit 3 here is a screen that has the content of alerting the occupant about the traveling direction. The display device is, for example, a display device included in the car navigation system. The display unit 3 functions as a reminder executing unit that executes the reminder when the reminder determination unit 15 determines to execute the reminder to prevent reverse running.

The map information storage unit 4 stores map information including information indicating SA/PA. In one example, the map information storage unit 4 is a non-volatile storage medium that stores map information used by the car navigation system. The information indicating SA/PA is, for example, road data within SA/PA.

The flag storage unit 5 stores a cautioned flag indicating whether or not the caution has already been executed. In one example, the flag storage unit 5 includes a volatile memory. The alert determination unit 15 does not issue an alert when the alert completed flag read from the flag storage 5 is set. Details of setting the alerted flag will be described later with reference to FIG.

FIG. 3 is a flowchart showing an example of the operation of the vehicle reverse running prevention device 1 according to the first embodiment. This process is realized by the CPU of the vehicle reverse running prevention device 1 reading and executing the program stored in the ROM when the engine of the vehicle is started, for example. The flowchart shown in FIG. 3 is executed periodically (for example, once every 100 milliseconds) while the engine of the vehicle is started.

In step S1, the control unit 2 determines whether or not the execution of the flowchart shown in FIG. 3 is the first execution after the ACC-ON (processing as the traveling state determination unit 9). If it is the first execution (step S1: Yes), the process proceeds to step S2. In one example, when the traveling state determination unit 9 receives the information indicating that the power of the vehicle is turned on from the ACC state detection unit 6, when the flowchart illustrated in FIG. 3 is first executed after ACC-ON. judge. In step S2, the control unit 2 resets the alerted flag (processing as the alert determination unit 15). As a result, when the condition for executing the alert is satisfied, the control unit 2 executes the alert.

On the other hand, if the execution of the flowchart shown in FIG. 3 is not the first execution after ACC-ON (step S1: No), the process proceeds to step S3. In step S3, the control unit 2 determines whether or not attention has already been paid (processing as the attention calling determination unit 15). For example, the alerting determination unit 15 determines that the alert has been issued when the alerted flag read from the flag storage unit 5 is set.

When it is determined that the alert has been issued (step S3: Yes), there is no need to execute the alert again, so the flow ends. As a result, it is possible to prevent redundant attention from being issued by the vehicle reverse running prevention device 1.

On the other hand, when it is determined that the alert has not been issued (step S3: No), the process proceeds to step S4. In step S4, the control unit 2 determines whether or not the host vehicle is within SA/PA (processing as the position determination unit 14).

When it is determined that the host vehicle is not within the SA/PA (step S4: No), there is no need to execute the alerting at least until the host vehicle enters the SA/PA next time, so the process proceeds to step S7.

On the other hand, when it is determined that the host vehicle is within SA/PA (step S4: Yes), the process proceeds to step S5. In step S5, the control unit 2 determines whether or not the condition for executing the alert is satisfied (process as the alert determination unit 15). In one example, the alerting determination unit 15 determines that the determination condition based on the traveling direction is not satisfied, and is based on the determination condition based on the vehicle speed, the determination condition based on the traveling distance, and the traveling time in each of the cases. When at least one of the determination condition and the position-based determination condition is satisfied, it is determined that the condition for executing the alert is satisfied.

In addition, as the determination condition for determining that the condition for performing the alert is satisfied by the alert determination unit 15, the above-described determination condition based on the traveling direction, the determination condition based on the vehicle speed, the determination condition based on the travel distance, It is possible to use a condition in which at least one of the determination condition based on the traveling time and the determination condition based on the position is arbitrarily combined using a logical product or a logical sum. By using the combination based on the logical product, the attention calling determination unit 15 can more accurately determine the condition for executing the attention calling.

When it is determined that the condition for executing the alert is not satisfied (step S5: No), it is not necessary to execute the alert, and the flow is ended. On the other hand, when it is determined that the condition for executing the alert is satisfied (step S5: Yes), the process proceeds to step S6.

In step S6, the control unit 2 executes an alert (processing as the display unit 3). In one example, the display unit 3 executes a reminder by displaying a reminder screen that urges attention on the display device (for example, for 3 seconds). The contents of the display screen will be described later with reference to FIGS. 4A to 5.

In step S7, the control unit 2 sets the alerted flag (processing as the alert determination unit 15). For example, the alerting determination unit 15 sets the alerted flag stored in the flag storage unit 5. As a result, when the flowchart shown in FIG. 3 is continuously executed regularly, the flow ends after step S3 and the alert in step S6 is not executed after the next time. Therefore, it is possible to prevent redundant attention from being issued by the vehicle reverse running prevention device 1.

FIG. 4A is an example I1 of the display screen displayed by the display unit 3 during parking. FIG. 4B is an example I2 of a reminder screen displayed on the display unit 3 that calls attention. An example of the display screen I1 during parking is, for example, a display screen of a normal car navigation system, and a message calling attention to the traveling direction is not displayed. On the other hand, when the host vehicle starts traveling and the condition for calling attention is satisfied, the display unit 3 displays the example I2 of the display screen instead of the example I1 of the display screen. The display unit 3 displays a message M1 that calls attention to the traveling direction when the vehicle joins the main line. As a result, the vehicle reverse running prevention device 1 according to the present disclosure can prompt the occupant to pay attention to the traveling direction at an appropriate timing when the occupant should pay attention to the traveling direction of the host vehicle.

FIG. 5 shows another example I3 of the alert screen displayed on the display unit 3 to call attention. The display unit 3 displays a message M2 that calls attention to the traveling direction when the vehicle joins the main line. The display unit 3 displays a mark V indicating the position of the vehicle traveling in the parking P. Further, the display unit 3 displays, for example, a mark S1 indicating a correct exit to pass through in order to join the main line. Further, the display unit 3 displays, for example, a mark S2 indicating an erroneous exit that should not pass in order to join the main line. As a result, the vehicle reverse running prevention device 1 according to the present disclosure can allow the occupant to confirm the correct traveling direction of the own vehicle at an appropriate timing when the occupant should pay attention to the traveling direction of the own vehicle.

In addition to or instead of displaying the display screens shown in FIGS. 4B and 5, for example, the display unit 3 displays a mark indicating the correct exit on the screen displaying the three-dimensional field of view viewed from the driver's seat. It may be displayed in a superimposed manner. Further, the color of the display screen may be changed (for example, from blue to red as the distance becomes smaller) according to the distance between the wrong exit and the host vehicle V.

As described above, the vehicle reverse running prevention device 1 according to the first embodiment includes the position determination unit 14 that determines whether the vehicle is located in the service area or the parking area, and the vehicle traveling state from the parked state. The traveling state determining unit 9 that determines whether the vehicle has moved to the driving state and the position determining unit 14 that determines that the vehicle is located in the service area or the parking area, and that the vehicle transitions from the parking state to the traveling state. When the determination unit 9 makes the determination, the attention determination unit 15 that determines whether or not the condition for performing the attention to prevent reverse running to the occupant of the vehicle is satisfied, and the condition is determined to be satisfied. In the case where the warning is given, a warning calling execution unit that calls a warning is provided.

Generally, there is a high possibility that an occupant parks his/her vehicle in the SA/PA, takes a break, and then reverses the vehicle. According to the vehicle reverse running prevention device 1 according to the first embodiment, after parking in the SA/PA where there is a high possibility of reverse running, before the fact of the reverse running of the own vehicle is confirmed, the occupant It is possible to prevent the reverse run in advance. Further, according to the vehicle reverse running prevention device 1, it is possible to easily determine the condition for determining the condition for calling attention. Therefore, it is possible to reduce the cost of mounting the vehicle reverse running prevention device 1 and reduce the possibility of an erroneous warning by the vehicle reverse running prevention device 1.

(Second embodiment)
FIG. 6 is a flowchart showing an example of the operation of the vehicle reverse running prevention device 1 according to the second embodiment. This process is realized by the CPU of the vehicle reverse running prevention device 1 reading and executing the program stored in the ROM when the engine of the vehicle is started, for example. The flowchart shown in FIG. 6 is executed periodically (for example, once every 100 milliseconds) while the vehicle engine is started.

In step S1', the control unit 2 determines whether or not the host vehicle is in the parked state (processing as the traveling state determination unit 9). In one example, the traveling state determination unit 9 determines that the host vehicle is in the parked state when the determination condition based on the shift lever state and/or the determination condition based on the stop time are satisfied.

When it is determined that the host vehicle is parked (step S1': Yes), the process proceeds to step S2. On the other hand, when it is determined that the host vehicle is not parked (step S1': No), the process proceeds to step S3.

Since the processing contents of steps S2 to S7 shown in FIG. 6 are the same as the processing contents of steps S2 to S7 shown in FIG. 3, respectively, description thereof will be omitted.

As described above, in the vehicle reverse running prevention device 1 according to the second embodiment, when the information indicating the state of the shift lever of the own vehicle indicates parking, the running state determination unit 9 determines that the own vehicle is in the parked state. In addition, the traveling state determination unit 9 determines that the host vehicle is in the parked state when the first time has elapsed while the speed of the host vehicle is less than the first speed.

According to the vehicle reverse running prevention device 1 according to the second embodiment, for example, the occupant pays attention to the traveling direction of the own vehicle even after the vehicle is parked without stopping the engine in SA/PA. At an appropriate timing, the occupant can be warned about the traveling direction. For example, the present disclosure can be applied to the case where the vehicle is parked in SA/PA without stopping the engine for the reason such as securing electric power for operating the air conditioner in SA/PA.

FIG. 7 is a diagram illustrating an example of the hardware configuration of a computer. The function of each unit in each of the above-described embodiments and each modification is realized by a program executed by the computer 2100.

As shown in FIG. 7, the computer 2100 includes an input device 2101 such as an input button and a touch pad, an output device 2102 such as a display and a speaker, a CPU (Central Processing Unit) 2103, a ROM (Read Only Memory) 2104, and a RAM (Random). Access Memory) 2105. Further, the computer 2100 is a reading device that reads information from a recording device such as a hard disk device, a storage device 2106 such as an SSD (Solid State Drive), a DVD-ROM (Digital Versatile Disk Read Only Memory), or a USB (Universal Serial Bus) memory. 2107, a transmission/reception device 2108 that performs communication via a network. The above-mentioned units are connected by a bus 2109.

Then, the reading device 2107 reads the program from the recording medium in which the program for realizing the functions of the respective units is recorded, and stores the program in the storage device 2106. Alternatively, the transmission/reception device 2108 communicates with a server device connected to the network, and causes the storage device 2106 to store a program downloaded from the server device for realizing the functions of the above-described units.

Then, the CPU 2103 copies the program stored in the storage device 2106 to the RAM 2105, sequentially reads out the instructions included in the program from the RAM 2105, and executes the instructions, so that the functions of the above-described units are realized. Further, when the program is executed, the RAM 2105 or the storage device 2106 stores the information obtained by the various processes described in each of the embodiments and appropriately uses it.

(Other embodiments)
In the first embodiment and the second embodiment, the display unit 3 of the vehicle reverse running prevention device displays the caution screen to alert the occupant about the traveling direction at the time of merging the main lines. prompt. In addition to or instead of this, the vehicle reverse running prevention device includes a sound generating unit (not shown) such as a speaker, and the alert execution unit causes the sound generating unit to generate a warning sound (for example, a warning "Pawn"). It is also possible to think of an embodiment in which the occupant is alerted by generating a sound) or a voice (for example, reading out a message such as "please note the direction of travel when joining the main line"). ..

In the first embodiment, when the execution of the flowchart shown in FIG. 3 is the first execution after ACC-ON (step S1: Yes), the alerted flag is reset. On the other hand, in the second embodiment, in the flowchart shown in FIG. 6, when it is determined that the host vehicle is in the parked state (step S1': Yes), the alerted flag is reset. Instead of these, in the first execution after ACC-ON or when it is determined that the host vehicle is parked, an embodiment in which the alerted flag is reset, that is, step S1 and step S1′ It is also possible to consider an embodiment in which

The vehicle reverse running prevention device 1 according to the present disclosure is suitable for being applied to a car navigation system mounted on a vehicle.

1 Vehicle Reverse Running Prevention Device 2 Control Unit 3 Display Unit 4 Map Information Storage Unit 5 Flag Storage Unit 6 ACC State Detection Unit 7 Shift Lever State Detection Unit 8 Vehicle Speed Detection Unit 9 Running State Judgment Unit 10 Running Distance Calculation Unit 11 Running Time Calculation Part 12 Reverse signal detection part 13 Vehicle position calculation part 14 Position determination part 15 Attention determination part

Claims (15)

A position determination unit that determines whether the vehicle is located in a service area or a parking area;
A traveling state determination unit that determines whether the vehicle has transitioned from a parking state to a traveling state,
When the position determination unit determines that the vehicle is located in the service area or the parking area, and when the traveling state determination unit determines that the vehicle has transitioned from the parking state to the traveling state, the occupant of the vehicle is And a warning alert determination unit that determines whether or not the conditions for performing alerts for reverse run prevention are satisfied,
When it is determined that the condition is satisfied, a reminder execution unit that executes the reminder,
Equipped with
When the traveling distance of the vehicle from a predetermined timing when the vehicle is in the parked state exceeds a first distance determined based on the service area or the parking area, the attention determination unit determines that the condition is A vehicle reverse running prevention device that determines that the vehicle is satisfied . The vehicle reverse running prevention device according to claim 1, wherein the traveling state determination unit determines that the vehicle is in the parking state when the power of the vehicle is turned on. The vehicle reverse running prevention device according to claim 1 or 2, wherein when the state of the shift lever of the vehicle is parking, the traveling state determination unit determines that the vehicle is in the parked state. The position determination unit determines whether the vehicle is in the service area or the parking area based on the position of the vehicle and the road on which the vehicle has traveled before entering the service area or the parking area. Item 5. The vehicle reverse running prevention device according to any one of items 1 to 3. Equipped with a storage unit that stores the alerted flag,
When the alerted flag is set, the alert determination unit determines that the condition is not satisfied,
The vehicle reverse running prevention device according to claim 1, wherein the attention calling determination unit sets the attention calling completed flag after the attention calling execution unit executes the attention calling. The vehicle reverse running prevention device according to claim 5, wherein when the position determination unit determines that the vehicle is not in the service area or the parking area, the attention determination unit sets the attention completed flag. The vehicle reverse running prevention device according to claim 1, wherein the attention calling determination unit determines that the condition is not satisfied when the vehicle is traveling in the back. The traveling state determination unit determines that the vehicle is in a parking state when a predetermined first time period has elapsed while the speed of the vehicle is less than a predetermined first speed. The vehicle reverse running prevention device according to any one of 1 to 7. When the time during which the vehicle has continuously traveled at a speed equal to or higher than the predetermined second speed exceeds the predetermined second time, the alerting determination unit determines that the condition is satisfied. The vehicle reverse running prevention device according to any one of claims 1 to 8. The vehicle reverse running prevention device according to claim 1, wherein when the speed of the vehicle exceeds a predetermined third speed, the attention determination unit determines that the condition is satisfied. The vehicle reverse running prevention device according to any one of claims 1 to 10, wherein the predetermined timing is a timing at which the vehicle was last in a parked state . The alerting execution unit executes the alerting by at least one of an alert screen and voice for preventing reverse running,
The vehicle reverse running prevention device according to any one of claims 1 to 11. The alert calls attention to the direction of travel and presents the correct direction of travel.
The vehicle reverse running prevention device according to claim 12. A step of determining whether the vehicle is located in the service area or the parking area, and
A step of determining whether or not the traveling state determination unit shifts the vehicle from the parking state to the traveling state;
When it is determined that the vehicle is located in the service area or the parking area, and when it is determined that the vehicle has transitioned from the parking state to the traveling state, the alert determination unit prevents the occupant of the vehicle from running backwards. Determining whether the conditions for performing a reminder for are met,
When it is determined that the condition is satisfied, the alert execution unit executes the alert,
Equipped with
In the step of determining whether or not the condition is satisfied, a mileage of the vehicle from a predetermined timing when the vehicle is parked is a first distance determined based on the service area or the parking area. When it exceeds, the method for preventing reverse running of the vehicle , wherein the alerting determination unit determines that the condition is satisfied . In the computer equipped with the vehicle reverse running prevention device,
Determining whether the vehicle is located in a service area or a parking area,
Determining whether the vehicle has transitioned from a parked state to a traveling state;
When it is determined that the vehicle is located in the service area or the parking area, and when it is determined that the vehicle has transitioned from the parking state to the traveling state, a warning for preventing reverse running is issued to the occupants of the vehicle. Determining whether the conditions for execution are met,
Executing the alert when it is determined that the condition is satisfied;
Was executed,
In the step of determining whether or not the condition is satisfied, a mileage of the vehicle from a predetermined timing when the vehicle is parked is a first distance determined based on the service area or the parking area. A program that, if exceeded, determines that the above conditions are met .

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