CN-122024506-A - Vehicle driving assistance system

Abstract

Provided is a vehicle driving support system (10) with low communication cost and communication load, which comprises a vehicle driving support device (200) mounted on a vehicle (400) and a server (100) configured on a communication network (150). The server receives, via a communication network, position information wirelessly transmitted from a wireless communication terminal (300) held by a mobile body (350), and transmits determination information to a vehicle driving support device via the communication network when it is determined, based on the position information, that the mobile body has passed a predetermined point toward a predetermined intersection. The vehicle driving support device notifies the operator of the vehicle of the presence of the mobile body in a1 st notification mode when the predetermined intersection is the target intersection and the notification condition that the predetermined intersection is the target intersection is satisfied, and notifies the operator of the vehicle in a2 nd notification mode when the mobile body is directly detected by the in-vehicle device (240) of the vehicle during the notification in the 1 st notification mode.

Inventors

• Qiu Benguang
• YOKOI YASUNOBU

Assignees

• 丰田自动车株式会社

Dates

Publication Date

20260512

Application Date

20251106

Priority Date

20241111

Claims (10)

1. 1. A vehicle driving assistance system comprising: A vehicle driving support device mounted on the vehicle, and a server arranged on a communication network, The server is configured to be configured to, Receiving location information wirelessly transmitted from a wireless communication terminal held by a mobile body via the communication network, Transmitting determination information to the vehicle driving support apparatus via the communication network when it is determined that a passing condition is satisfied based on the position information, The passing condition is a condition that the moving body passes a predetermined place toward a predetermined intersection, The predetermined point is a point set on a predetermined intersection, and is a point spaced apart from the predetermined intersection by a predetermined distance along the predetermined intersection, The predetermined intersection road is a road intersecting other roads at the predetermined intersection, The determination information is information indicating that the mobile body passes through the predetermined point located at the predetermined intersection toward the predetermined intersection, The vehicle driving support apparatus is configured such that, When the predetermined intersection indicated by the received determination information is an intersection of interest and the notification condition that the predetermined intersection indicated by the received determination information is an intersection of interest is satisfied, notifying an operator of the host vehicle of the presence of the object moving object in a1 st notification manner, In the case where an object detection condition that the vehicle-mounted device of the host vehicle directly detects the object moving body is satisfied while the notification is performed in the 1 st notification method, the notification is performed in a2 nd notification method different from the 1 st notification method, The target intersection is an intersection ahead of the own vehicle in the traveling direction, The object intersection road is a road intersecting with a traveling road of the own vehicle at the object intersection, The object moving body is a moving body that moves on the object intersection toward the object intersection.
2. 2. The vehicle driving assistance system according to claim 1, The passing condition is a condition that the moving body passes through the predetermined point toward the predetermined intersection and the moving speed of the moving body is a speed within a predetermined speed range.
3. 3. The vehicle driving assistance system according to claim 1, The predetermined location is a location where the arrival time of the mobile body is longer than the delay time, The moving body arrival time is a time required for the moving body to reach the predetermined intersection after reaching the predetermined place, The delay time is a time required from when the wireless communication terminal wirelessly transmits the position information until the vehicle driving support apparatus receives the determination information via the server.
4. 4. The vehicle driving assistance system according to claim 1, The notification condition is a condition that the predetermined intersection indicated by the received determination information is an object intersection, and the own vehicle arrival time is a time within a predetermined notification time range, The own vehicle arrival time is a time required for the own vehicle to reach the target intersection after receiving the determination information, The predetermined notification time range is in the range of 2 seconds to 5 seconds.
5. 5. The vehicle driving assistance system according to claim 1, The vehicle driving support device is configured to obtain a time until the vehicle collides with the object moving body as the collision prediction time, start automatic braking control for braking the vehicle and stopping the vehicle when the collision prediction time is shortened to a predetermined braking start time, stop the vehicle, The notification condition is a condition that the predetermined intersection indicated by the received determination information is an object intersection, and the own vehicle arrival time is a time within a predetermined notification time range, The own vehicle arrival time is a time required for the own vehicle to reach the target intersection after receiving the determination information, The predetermined notification time range is a range that is longer than the predetermined braking start time and is equal to or less than a predetermined coping start time, The predetermined response start time is a maximum value of time at which the operator of the host vehicle starts a behavior for avoiding collision of the object moving body with the host vehicle, which is estimated to be a time point at which notification in the 1 st notification method starts.
6. 6. The vehicle driving assistance system according to claim 1, As the predetermined points, the 1 st point and the 2 nd point are set, The 1 st place is the place of which the predetermined distance is 1 st distance, The 2 nd place is a place where the predetermined distance is a 2 nd distance longer than the 1 st distance, The passing condition is a condition that the moving body passes through the 1 st place toward the predetermined intersection and the moving speed of the moving body is a speed within a1 st speed range, or that the moving body passes through the 2 nd place toward the predetermined intersection and the moving speed of the moving body is a speed within a 2 nd speed range, The lower limit of the 2 nd speed range is greater than the upper limit of the 1 st speed range.
7. 7. The vehicle driving assistance system according to claim 6, The speed in the 1 st speed range is a movement speed normally achieved by a pedestrian moving toward the predetermined intersection, The speed in the 2 nd speed range is a movement speed normally achieved by bicycles moving toward the predetermined intersection.
8. 8. The vehicle driving assistance system according to claim 1, The predetermined points are set with the 1 st point, the 2 nd point and the 3 rd point, The 1 st place is the place of which the predetermined distance is 1 st distance, The 2 nd place is a place where the predetermined distance is a 2 nd distance longer than the 1 st distance, The 3 rd place is a place where the predetermined distance is a 3 rd distance longer than the 2 nd distance, The passing condition is a condition that the moving body passes through the 1 st place toward the predetermined intersection and the moving speed of the moving body is a speed within a1 st speed range, or the moving body passes through the 2 nd place toward the predetermined intersection and the moving speed of the moving body is a speed within a2 nd speed range, or the moving body passes through the 3 rd place toward the predetermined intersection and the moving speed of the moving body is a speed within a 3 rd speed range, The lower limit of the 2 nd speed range is greater than the upper limit of the 1 st speed range, The lower limit of the 3 rd speed range is greater than the upper limit of the 2 nd speed range.
9. 9. The vehicle driving assistance system according to claim 8, The speed in the 1 st speed range is a movement speed normally achieved by a pedestrian moving toward the predetermined intersection, The speed in the 2 nd speed range is a movement speed that is generally achieved by bicycles moving toward the predetermined intersection, The speed in the 3 rd speed range is a movement speed normally achieved by a motorcycle or an automobile moving toward the predetermined intersection.
10. 10. The vehicle driving assistance system according to claim 1, The in-vehicle apparatus is an image sensor or an electromagnetic wave sensor.

Description

Vehicle driving assistance system Technical Field The present invention relates to a vehicle driving assistance system. Background A vehicle driving support system is known that notifies an operator of a host vehicle of the presence of a mobile body that moves toward an intersection ahead of the host vehicle. As such a vehicle driving support system, a vehicle driving support system is also known in which wireless communication information transmitted from a wireless communication terminal of a mobile body is provided to a host vehicle via a web server, and the notification is performed based on the provided wireless communication information (for example, refer to patent document 1). Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2022-123691 Disclosure of Invention In the vehicle driving support system described above, if communication of the wireless communication information is performed all the time, the communication cost and the communication load become large. The purpose of the present invention is to provide a vehicle driving support system that has low communication costs and communication loads. The vehicle driving support system according to the present invention includes a vehicle driving support device mounted on a host vehicle, and a server disposed in a communication network. The server is configured to receive, via the communication network, position information wirelessly transmitted from a wireless communication terminal held by a mobile unit, and to transmit determination information to the vehicle driving support apparatus via the communication network when it is determined that a passing condition is satisfied based on the position information. The passing condition is a condition that the moving body passes through a predetermined place toward a predetermined intersection. The predetermined point is a point set on a predetermined intersection, and is a point spaced apart from the predetermined intersection by a predetermined distance along the predetermined intersection. The predetermined intersection road is a road intersecting with other roads at the predetermined intersection. The determination information is information indicating that the mobile body has passed through the predetermined point located on the predetermined intersection toward the predetermined intersection. The vehicle driving support device is configured to notify an operator of the vehicle of the presence of the object mobile body in a1 st notification manner when the predetermined intersection indicated by the received determination information is an object intersection and a notification condition that the predetermined intersection indicated by the received determination information is an object intersection is satisfied, and to notify the operator of the vehicle in a 2 nd notification manner different from the 1 st notification manner when the vehicle-mounted device of the vehicle directly detects that the object detection condition that the object mobile body is satisfied while the notification is performed in the 1 st notification manner. The target intersection is an intersection ahead of the own vehicle in the traveling direction. The object intersection is a road intersecting with a traveling road of the own vehicle at the object intersection. The object moving body is a moving body that moves on the object intersection toward the object intersection. If communication between the server and the vehicle driving support apparatus is performed all the time, the communication cost and the communication load become large. According to the vehicle driving support system of the present invention, the server transmits the determination information to the vehicle driving support device when the passing condition is satisfied, when the position information is received from the wireless communication terminal. In the vehicle driving support system according to the present invention, the vehicle driving support device notifies the user when the notification condition is satisfied when the determination information is received from the server. Therefore, according to the vehicle driving support system, the communication cost and the communication load can be reduced. In the vehicle driving support system according to the present invention, the passing condition may be a condition that the moving body passes through the predetermined point toward the predetermined intersection and the moving speed of the moving body is within a predetermined speed range. According to the vehicle driving support system of the present invention, it is possible to determine whether or not to transmit the determination information to the vehicle driving support device based on the moving speed of the moving body. In the vehicle driving support system according to the present invention, the predetermined point is, for example, a point where the moving body arrives at a time longer than the delay time