JP2008210198A - Information providing system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately set the timing for providing information for a crew. <P>SOLUTION: A transmitter vehicle is provided with a communication means 12; a target vehicle detection means 13 for detecting a target vehicle which may be an obstacle to the transmitter vehicle; and an information providing means 14 for providing information on the target vehicle to the crew of the transmitter vehicle, and information on the transmitter vehicle for the target vehicle. The target vehicle is provided with a communication means 22 for communicating with the transmitter vehicle; an information providing means 24 for providing information to the crew of the target vehicle based on the information from the transmitter vehicle; and a deceleration intention transmitting means 23 for detecting the deceleration intention of the crew of the target vehicle after the information providing means 24 provides the information, and transmitting the detection result to the transmitter vehicle. The information providing means 14 of the transmitter vehicle provides the information to the crew of the transmitter vehicle, based on the result of detecting the deceleration intention of the crew of the target vehicle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle information providing system.

  As a system to prevent accidents between vehicles at intersections, a monitoring device installed on the roadside detects the collision risk between vehicles based on the speed and position of multiple vehicles, and transmits the detected risk to each vehicle A system that performs a predetermined collision avoidance process according to the degree of risk received by each vehicle is known (see, for example, Patent Document 1).

Also, without using such a roadside monitoring device, the vehicles directly communicate with each other to obtain target vehicle speed information and position information (hereinafter referred to as an inter-vehicle communication system). Collision avoidance that estimates the possibility of contact between the subject vehicle and the target vehicle based on the behavior of the subject vehicle (speed, direction of travel, etc.), and issues a warning when there is a possibility of contact and suppresses the start of the subject vehicle Processing systems have also been developed.
JP-A-5-325099

However, the conventional collision avoidance processing system using inter-vehicle communication has a problem that it is difficult to appropriately set the timing for providing information to the driver.
One of the causes is that the operation when the driver starts from the intersection and makes a right turn has a large portion due to the driver, such as the driver's reaction time and operation time.
In addition, as other causes, even when the target vehicles are directly visible to each other, the way they look at day and night are different, and the way they look depending on the size of the vehicle greatly affects the judgment of the driver. and so on.

  Therefore, the present invention provides a vehicle information providing system capable of appropriately setting information providing timing to an occupant.

The vehicle information providing system according to the present invention employs the following means in order to solve the above problems.
The invention according to claim 1 is a vehicle information providing system including a plurality of vehicles that perform communication, and a transmission source vehicle (for example, transmission source vehicle A in an embodiment described later) communicates with other vehicles. Target vehicle detection for detecting a first communication means (for example, communication means 12 in an embodiment to be described later) and a target vehicle (for example, target vehicle B in an embodiment to be described later) that may be an obstacle to the transmission source vehicle. Means (for example, target vehicle detection means 13 in the embodiment described later), and information on the target vehicle is provided to an occupant of the transmission source vehicle and the transmission source is transmitted to the target vehicle using the first communication means. First information providing means for providing information related to the vehicle (for example, information providing means 14 in an embodiment described later), and the target vehicle communicates with the transmission source vehicle. 2 communication means (for example, the communication means 22 in the embodiment described later) and second information providing means (for example, in the embodiment described later) for providing information to the occupant of the target vehicle based on information from the transmission source vehicle. An information providing unit 24) and a deceleration intention transmitting unit that detects a deceleration intention of the occupant of the target vehicle after providing information by the second information providing unit and transmits a detection result to the transmission source vehicle by the second communication unit. (E.g., a deceleration will transmission means 23 in an embodiment described later), and the first information providing means of the transmission source vehicle is a occupant of the target vehicle transmitted by the deceleration will transmission means of the target vehicle. An information providing system for a vehicle is characterized in that information is provided to an occupant of the transmission source vehicle based on a deceleration intention detection result.

  According to a second aspect of the present invention, in the first aspect of the invention, the first information providing unit of the transmission source vehicle is the deceleration of the occupant of the target vehicle transmitted by the deceleration intention transmission unit of the target vehicle. When the intention detection result is that there is no intention to decelerate, information that suppresses vehicle travel is provided to the occupant of the transmission source vehicle.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the first information providing unit of the transmission source vehicle is the target vehicle transmitted by the deceleration intention transmission unit of the target vehicle. When the detection result of the occupant's intention to decelerate is determined to decelerate, the collision determination between the transmission source vehicle and the target vehicle is performed, and when it is determined that the collision possibility is high, the occupant of the transmission source vehicle It provides information that suppresses vehicle travel.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the deceleration intention transmitting means of the target vehicle is based on an accelerator pedal operation or a brake pedal operation of the passenger. It is characterized by detecting the will of deceleration.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the deceleration intention transmitting means of the target vehicle decelerates the occupant based on a switch input operated by the occupant. It is characterized by detecting a will.

  According to the first aspect of the invention, the transmission source vehicle can know whether or not the occupant of the target vehicle has a willingness to decelerate through communication (information exchange) with the target vehicle. Since information about the target vehicle is provided to the occupant of the transmission source vehicle based on the presence or absence, accurate information can be provided at an appropriate timing.

  According to the second aspect of the present invention, when the occupant of the target vehicle does not intend to decelerate, the occupant of the transmission source vehicle is provided with information for suppressing the vehicle progression. Can be prevented.

  According to the third aspect of the present invention, even if the occupant of the target vehicle has a willingness to decelerate, when the possibility of collision between the transmission source vehicle and the target vehicle is high, the vehicle progression is suppressed for the occupant of the transmission source vehicle. Since the information is provided, the occupant of the transmission source vehicle can prevent contact with the target vehicle.

  According to the invention which concerns on Claim 4 or Claim 5, the presence or absence of the deceleration intention of the passenger | crew of an object vehicle can be detected easily.

Embodiments of a vehicle information providing system according to the present invention will be described below with reference to the drawings of FIGS.
In this vehicle information providing system, for example, as shown in FIG. 4, when the own vehicle A is about to turn right at the intersection T, there is another vehicle B that travels on the opposite lane toward the intersection T. As shown in FIG. 5, when the own vehicle A traveling on the non-priority road R1 temporarily stops before the intersection T with the priority road R2 and turns right and enters the priority road R2, the intersection of the priority road R2 When there is another vehicle B traveling toward T, information is exchanged between the host vehicle A and the other vehicle B. In the following description, it is assumed that the host vehicle A in such a situation is the transmission source vehicle A and the other vehicle B is the target vehicle B.

  As shown in FIG. 1, the information providing apparatus 1A of the transmission source vehicle A includes a host vehicle information detecting unit 11, a communication unit (first communication unit) 12, a target vehicle detecting unit 13, and an information providing unit (first (Information providing means) 14, display 15, speaker 16, and blinker switch 17, while information providing apparatus 1 B of target vehicle B includes host vehicle information detecting means 21, communication means (second communication) Means) 22, deceleration will transmission means 23, information providing means (second information providing means) 24, indicator 25, speaker 26, accelerator pedal sensor 27, brake pedal sensor 28, deceleration intention display switch 29, It is equipped with.

  The own vehicle information detection means 11 of the transmission source vehicle A is, for example, a vehicle speed sensor that detects the traveling speed (vehicle speed) of the own vehicle, or a GPS (Global Positioning System) that measures the position of the vehicle using, for example, an artificial satellite. Positioning signals such as signals, position signals transmitted from information transmission devices outside the host vehicle, magnetic action with, for example, a base point marker placed on the road, and further detection results of an appropriate gyro sensor, acceleration sensor, etc. Based on the position sensor that detects the current position and traveling direction of the host vehicle, the yaw angle (rotational angle around the vertical axis of the vehicle center of gravity), yaw rate (rotational angular velocity around the vertical axis of the vehicle center of gravity) and steering angle ( Each sensor etc. which detect the direction and magnitude | size of the steering angle which the driver input are comprised. The own vehicle information detecting unit 11 outputs the detected own vehicle information to the information providing unit 14.

  The communication means 12 of the transmission source vehicle A includes a transmission means 12a and a reception means 12b that communicate with other vehicles. The transmission unit 12a is configured to display various information of the host vehicle detected by the host vehicle information detection unit 11 and the operating state of the winker of the host vehicle detected by the winker switch 17 every predetermined time (for example, 100 msec). To other vehicles, that is, other vehicles. The receiving unit 12b receives various information transmitted from other vehicles, and outputs the received information on the other vehicles to the target vehicle detecting unit 13 and the information providing unit 14.

The target vehicle detection means 13 of the transmission source vehicle A detects the presence or absence of the target vehicle B that can be an obstacle to the host vehicle based on the information of the other vehicle input from the reception means 12b, and the detection result is provided as information providing means. 14 to output.
The information providing unit 14 of the transmission source vehicle A transmits the information on the host vehicle and the winker operating state of the host vehicle to another vehicle through the transmission unit 12a, and the target vehicle B is detected by the target vehicle detection unit 13. In addition, information is provided to the occupant of the host vehicle via the display 15 or the speaker 16 in accordance with whether or not the target vehicle B is willing to decelerate.

The display device 15 of the transmission source vehicle A is composed of a display device that displays predetermined alarm information by characters or marks.
The speaker 16 of the transmission source vehicle A emits an alarm sound or synthesized sound corresponding to the alarm information.
The winker switch 17 of the transmission source vehicle A detects the operating state of the winker of the host vehicle, and outputs the detection result to the information providing means 14.

Since the own vehicle information detection means 21 of the target vehicle B is the same as the own vehicle information detection means 11 of the transmission source vehicle A, description thereof is omitted.
The communication unit 22 of the target vehicle B includes a transmission unit 22a and a reception unit 22b that communicate with another vehicle. The transmission means 22a transmits various information of the own vehicle detected by the own vehicle information detection means 21 and deceleration intention information of the own vehicle detected by the deceleration intention transmission means 23 at every predetermined time (for example, 100 msec). To other vehicles, that is, other vehicles. The receiving unit 22 b receives various information transmitted from other vehicles, and outputs the received information on the other vehicles to the information providing unit 24.

The accelerator pedal sensor 27 of the target vehicle B outputs the detected accelerator opening to the deceleration willing transmission means 23, and the brake pedal sensor 28 sends an ON / OFF signal to the deceleration willing transmission means 23 in response to whether or not the brake pedal is depressed. Output. The deceleration intention display switch 29 is a switch operated by the driver when the driver actively displays the intention of deceleration, and outputs an ON / OFF signal to the deceleration will transmission means 23.
Based on the outputs of the accelerator pedal sensor 27, the brake pedal sensor 28, the deceleration intention display switch 29, etc., the deceleration intention transmission means 23 of the target vehicle B detects the presence / absence of the vehicle's occupant's intention to decelerate, and the detection result is obtained. It transmits to another vehicle via the transmission means 22a.

For example, as shown in [Table 1], when there is no change in the accelerator opening detected by the accelerator pedal sensor 27 or when the accelerator opening changes in the positive direction, it is determined that there is no intention to decelerate. When the brake pedal sensor 28 is ON, it is determined that “there is a deceleration intention”.
Further, when the deceleration intention display switch 29 is turned on, it is determined that “there is a deceleration intention”, and when it is OFF, it is determined that there is “no deceleration intention”.
Alternatively, when the acceleration of the host vehicle is greater than or equal to 0 (≧ 0), it may be determined that there is no intention to decelerate, and when it is less than 0 (<0), it may be determined that there is a intention to decelerate, or brake pressure is generated. May be determined as “with a willingness to slow down”, and when the headlight irradiation direction is changed up and down (when performing a so-called passing operation), it is determined as “without a willingness to slow down” Also good.

The information providing unit 24 of the target vehicle B transmits the information on the host vehicle to the other vehicle via the transmission unit 22a, and the display 25 or the display unit 25b according to the winker operating state of the transmission source vehicle A received by the reception unit 22b. Information is provided to passengers of the vehicle through the speaker 26.
Since the display 25 and the speaker 26 of the target vehicle B are the same as the display 15 and the speaker 16 of the transmission source vehicle A, description thereof is omitted.

Next, the information provision processing in this embodiment will be described with reference to the flowcharts of FIGS. Here, the case of the example shown in FIG. 4 will be described.
The flowchart shown in FIG. 2 shows the information provision processing routine executed in the transmission source vehicle A, and the flowchart shown in FIG. 3 shows the information provision processing routine executed in the target vehicle B. These information provision processing routines are This is repeatedly executed by the electronic control unit.

First, the information providing process of the transmission source vehicle A will be described according to the flowchart of FIG.
First, in step S101, information is provided in front of the host vehicle based on the current position of the host vehicle (source vehicle A) detected by the host vehicle information detection means 11 and map information stored in a storage device (not shown). It is determined whether a place (intersection) exists.

If the determination result in step S101 is “YES” (there is an intersection), the process proceeds to step S102, and the own vehicle (source vehicle A) waits for a right turn before the intersection based on the output of the vehicle speed sensor and the blinker switch 17. It is determined whether or not.
If the determination result in step S102 is "YES" (waiting for a right turn), the process proceeds to step S103, and the own vehicle (source vehicle A) is waiting for a right turn and is transmitted to other vehicles via the transmission means 12a. .

Next, it progresses to step S104 and it is determined whether the vehicle which drive | works to an intersection on an oncoming lane, ie, an oncoming vehicle exists.
If the determination result in step S104 is “YES” (there is an oncoming vehicle), the process proceeds to step S105, the oncoming vehicle is set as the target vehicle B, and based on the information on the target vehicle received by the receiving unit 12b, It is determined whether the target vehicle B has a deceleration intention.

When the determination result in step S105 is “YES” (willing to decelerate), the process proceeds to step S106, where the target vehicle B is based on the information of the target vehicle B (current position and vehicle speed) (the source vehicle). Time (arrival time) TTC until it reaches before A) is calculated.
Next, it progresses to step S107 and it is determined whether the arrival time TTC of the target vehicle B is larger than the preset passage allowance time Tlim. Here, the passing allowance time Tlim is set to a time during which the host vehicle (source vehicle A), which has stopped before the intersection, is started by a normal operation and is turned to the right so that the intersection can be safely completed.

  When the determination result in step S107 is “YES” (TTC> Tlim), the process proceeds to step S108, and the occupant of the own vehicle (source vehicle A) is notified by “at least one of the display 15 and the speaker 16” Proceed with care ", and then proceed to step S109 to instruct" start right turn "and terminate the execution of this routine.

On the other hand, when the determination result in step S107 is “NO” (TTC ≦ Tlim), the process proceeds to step S110, and the occupant of the host vehicle (source vehicle A) is operated by at least one of the display 15 and the speaker 16. , Provide information “Please wait because the oncoming vehicle is approaching”, and proceed to Step S111.
In step S111, it is determined whether or not the target vehicle B has passed the intersection. If the determination result in step S111 is “YES” (passed), the process proceeds to step S109 to instruct “start a right turn”, and the execution of this routine is once ended.
On the other hand, if the determination result in step S111 is “NO” (not passing), the process returns to step S110.

  When the determination result in step S105 is “NO” (the target vehicle does not intend to slow down), the process proceeds to step S110, and at least one of the display 15 and the speaker 16 is given to the passenger of the own vehicle (source vehicle A). On the other hand, the information “Please wait because the oncoming vehicle is approaching” is provided.

  If the determination result in step S101 is “NO” (no intersection), if the determination result in step S102 is “NO” (not waiting for a right turn), the determination result in step S104 is “NO” (no oncoming vehicle). ), Since it is not necessary to provide information to the passenger of the host vehicle (source vehicle A), the execution of this routine is temporarily terminated.

Next, the information provision process of the target vehicle B will be described according to the flowchart of FIG.
First, in step S201, it is determined whether there is a right turn waiting vehicle ahead of the host vehicle (target vehicle B) based on the information (right turn waiting information) of the other vehicle received by the receiving unit 22b.

If the determination result in step S201 is “YES” (there is a vehicle waiting for a right turn), the process proceeds to step S202, where it is determined whether or not the own vehicle (target vehicle B) is approaching the intersection where the vehicle waiting for a right turn exists. .
If the determination result in step S202 is “YES” (approaching), the process proceeds to step S203, and the occupant of the host vehicle (target vehicle B) is instructed to “forward” by at least one of the display 25 and the speaker 26. Provide information that there is a vehicle waiting to turn right.

  Next, it progresses to step S204 and the determination process of whether the own vehicle (target vehicle B) has a deceleration intention is performed. This deceleration will determination process is performed based on outputs from the accelerator pedal sensor 27, the brake pedal sensor 28, the deceleration intention display switch 29, and the like as described above.

Next, proceeding to step S205, it is determined whether or not the result of the deceleration intention determination process is a deceleration intention.
If the determination result in step S205 is “YES” (no deceleration intention), the process proceeds to step S206, and the fact that the host vehicle (target vehicle B) has no deceleration intention is transmitted to other vehicles via the transmission means 22a. Then, the execution of this routine is temporarily terminated.
On the other hand, if the determination result in step S205 is “NO” (with a decelerating will), the process proceeds to step S207 to indicate that the own vehicle (target vehicle B) has a decelerating will through the transmitting means 22a. To terminate the execution of this routine.

  If the determination result in step S201 is “NO” (no right turn waiting vehicle), and if the determination result in step S202 is “NO” (not approaching the intersection), the subject vehicle (target) Since it is not necessary to provide information to the vehicle B), the execution of this routine is temporarily terminated.

  As described above, according to the vehicle information processing system of this embodiment, when a right turn vehicle is waiting for a right turn in front of an intersection, it notifies the other vehicles around that it is waiting for a right turn. The target vehicle B that is the oncoming vehicle that has received the notification notifies the transmission source vehicle A waiting for a right turn whether or not the target vehicle B has a will to decelerate.

Then, the transmission source vehicle A that has received a notification of intention to decelerate from the target vehicle B calculates the arrival time TTC until the target vehicle B reaches the intersection, and compares this arrival time TTC with the allowance time Tlim. Therefore, when the transmission source vehicle A makes a right turn, it is determined whether or not there is a high possibility of collision with the target vehicle B. If the collision possibility is high, the occupant of the transmission source vehicle A is informed By providing the information “Please wait”, the right turn of the transmission source vehicle A can be suppressed. Thereby, the collision with the transmission origin vehicle A and the object vehicle B can be prevented.
Also, if the possibility of collision is low, the occupant of the transmission source vehicle A is provided with the information “Please drive with caution”, and the “turn right” instruction is given to the occupant of the transmission source vehicle A. The operation can be prompted.

  In addition, even when a notification of no deceleration intention is received from the target vehicle B, the transmission source vehicle A provides the occupant of the transmission source vehicle A with the information “Please wait because the oncoming vehicle is approaching”. The right turn traveling of the vehicle A can be suppressed. Thereby, the collision with the transmission origin vehicle A and the object vehicle B can be prevented.

  In this way, the vehicle waiting for the right turn and the oncoming vehicle exchange the next action with each other in advance, so that the next action of the opponent can be accurately known, and the timely allowance can be accurately obtained at an appropriate timing. Information can be provided to passengers. Thereby, the contact accident at the time of the right turn in an intersection can be prevented.

  In the above-described embodiment, the example corresponding to FIG. 4 has been described, but this vehicle information processing system can also be implemented in the example shown in FIG. In that case, in the flowchart of the transmission source vehicle A shown in FIG. 2, the process of step S102 is a process of determining whether or not to wait for a start from the intersection to the priority road, and the process of step S104 approaches the priority road toward the intersection. This is a process for determining whether or not there is an incoming vehicle. In the flowchart of the target vehicle B shown in FIG. 3, the process in step S201 is a process for determining whether or not there is a vehicle that appears on the priority road. Information on “with vehicle” is provided.

[Other Examples]
The present invention is not limited to the embodiment described above.
For example, in the above-described embodiment, the present invention is applied when making a right turn at an intersection or when entering a priority road. However, the present invention is, for example, a vehicle (such as a two-wheeled vehicle) that goes straight on the left side of its own vehicle when making a left turn at an intersection. It can also be applied when communicating between vehicles and providing information to the host vehicle between the host vehicle and the host vehicle, between the other vehicle and the host vehicle traveling straight from the rear of the host vehicle when changing the lane of the host vehicle. The present invention can also be applied to the case where information is provided to the host vehicle by performing inter-vehicle communication.

It is a block diagram in the Example of the information processing system for vehicles concerning this invention. It is a flowchart which shows the information provision process of a transmission origin vehicle in the said Example. It is a flowchart which shows the information provision process of an object vehicle in the said Example. It is a figure which shows an example of the positional relationship of a transmission source vehicle and a target vehicle when information provision is performed in the said Example. It is a figure which shows the other example of the positional relationship of a transmission origin vehicle when information provision is performed in the said Example, and a target vehicle.

Explanation of symbols

12 Communication means (first communication means)
13 Target vehicle detection means 14 Information providing means (first information providing means)
22 Communication means (second communication means)
23 deceleration willing transmission means 24 information providing means (second information providing means)
27 Accelerator pedal sensor 28 Brake pedal sensor 29 Deceleration intention display switch

Claims (5)

A vehicle information providing system comprising a plurality of vehicles for communication,
The transmission source vehicle includes a first communication unit that communicates with another vehicle, a target vehicle detection unit that detects a target vehicle that may be an obstacle to the transmission source vehicle, and an occupant of the transmission source vehicle. First information providing means for providing information on the target vehicle and providing information on the transmission source vehicle using the first communication means to the target vehicle,
The target vehicle includes second communication means for communicating with the transmission source vehicle, second information providing means for providing information to a passenger of the target vehicle based on information from the transmission source vehicle, Decelerating intention transmitting means for detecting the decelerating intention of the occupant of the target vehicle after providing information by the second information providing means and transmitting the detection result to the transmission source vehicle by the second communication means,
The first information providing unit of the transmission source vehicle provides information to the occupant of the transmission source vehicle based on the detection result of the deceleration intention of the occupant of the target vehicle transmitted by the deceleration intention transmission unit of the target vehicle. An information providing system for a vehicle, characterized in that:   The first information providing means of the transmission source vehicle, when the deceleration intention detection result of the occupant of the target vehicle transmitted by the deceleration intention transmission means of the target vehicle is no deceleration intention, The vehicle information providing system according to claim 1, wherein information for suppressing vehicle progression is provided.   The first information providing unit of the transmission source vehicle, when the deceleration intention detection result of the occupant of the target vehicle transmitted by the deceleration intention transmission unit of the target vehicle has a deceleration intention, The collision determination with the target vehicle is performed, and when it is determined that the possibility of the collision is high, the passenger of the transmission source vehicle is provided with information for suppressing the vehicle advancement. 2. The vehicle information provision system according to 2.   The said deceleration intention transmission means of the said target vehicle detects a passenger | crew's will to decelerate based on a passenger | crew's accelerator pedal operation or brake pedal operation, The one of Claims 1-3 characterized by the above-mentioned. Information provision system for vehicles.   5. The vehicle according to claim 1, wherein the deceleration intention transmission unit of the target vehicle detects the occupant's intention to decelerate based on a switch input operated by the occupant. Information provision system.

Images