JP2011090543A - Vehicle information providing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle information providing apparatus that properly notifies a driver of a risk without giving discomfort to the driver. <P>SOLUTION: A surrounding object position detection means 101 detects a position of an object existing around a vehicle. A vehicle state detection means 102 detects a vehicle state comprising at least either one of the velocity and the acceleration of the vehicle, and a running direction of the vehicle. An operation means 105 calculates an advancing direction of the object based on a time-series change in the position of the object and the vehicle state. A risk prediction means 110 predicts a possible risk around the vehicle based on the advancing direction of the object and the vehicle state. Notification means 107, 108 notifies the driver of the risk. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle information providing apparatus that notifies a driver of a vehicle of a danger.

  Conventionally, various vehicle information providing apparatuses for recognizing an object existing in the vicinity of the host vehicle and notifying the driver of the danger related to the object have been proposed. Such a vehicle information providing device includes a surrounding environment recognition unit that recognizes the surrounding environment of the host vehicle, a risk level setting unit that sets a current risk level for each target of the recognized surrounding environment, and each of the risk level settings. A risk change predicting means for predicting a temporal change in the position of the object by predicting a temporal change in the position of the object, and each of the vehicles ahead based on the temporal change in the risk predicted by the risk change predicting means Evaluation function setting means for setting an evaluation function having a first calculation term of a risk function that is converted and set for each distance and a second calculation term that is set according to the acceleration state of the host vehicle at least for each distance ahead. And a control amount calculation means for calculating the acceleration state of the host vehicle that minimizes the evaluation function and outputting the acceleration state of the host vehicle as a control amount.

JP 2009-116614 A

However, the above-described vehicle information providing apparatus selects an avoidance route in consideration of the predicted risk level and automatically controls the brake and the steering. Since they do not coincide with each other, when there is a mismatch with the driver, the brake and the steering that are automatically controlled in order to avoid danger may interfere with the driver's danger avoidance operation. Further, automatically controlling the brake and the steering wheel impairs the driver's preference, and has the problem of causing discomfort to the driver.
The present invention has been made in view of this problem, and is a vehicle information providing device that can predict a potential danger and appropriately convey the danger to the driver without causing discomfort to the driver. Is to provide.

  The present invention relates to a surrounding object position detecting means 101 that detects the position of an object that exists in the vicinity of the host vehicle, and a host vehicle that detects at least one of the host vehicle speed or host vehicle acceleration and the host vehicle state. Based on the state detection means 102, the calculation means 105 for calculating the traveling direction of the object based on the time-series change of the position of the object and the own vehicle state, and on the basis of the traveling direction of the object and the own vehicle state A vehicle information providing apparatus comprising: a risk prediction unit 110 that predicts a risk around a host vehicle; and notification units 107 and 108 that transmit the risk to a driver. The analyzing means 103 for analyzing the driving characteristics of the driver obtained by the own vehicle state detecting means 101, and the storage device 10 for storing the analysis result by the analyzing means 103. And, those having a.

  In the present invention, the notification means includes at least one of the display 107 and the sound generator 108.

  By analyzing the driving characteristics of the driver obtained from the own vehicle state detection means by the risk prediction means, it is possible to appropriately convey the danger to the driver without giving the driver discomfort.

The block diagram which shows embodiment of this invention. The flowchart which shows embodiment same as the above.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  The vehicle information providing apparatus includes an ultrasonic sensor (peripheral object position detecting means) 101, an own vehicle state detecting apparatus (own vehicle state detecting means) 102, a driving characteristic analyzer (analyzing means) 103, a storage device 104, an arithmetic device ( (Calculation means) 105, risk prediction device 106, display (display device) 107, and speaker (sound generator) 108. The risk prediction unit 110 includes an operation characteristic analysis device 103, a risk prediction device 106, and a storage device 104.

  The ultrasonic sensor 101 detects an object around the vehicle, and outputs positional relationship data between the vehicle and the object to the arithmetic device 105 in a temporally continuous manner. The own vehicle state detection device 102 detects the own vehicle traveling direction, own vehicle speed, and own vehicle acceleration of the own vehicle, and sends the own vehicle traveling direction data to the arithmetic device 105, the driving characteristic analysis device 103, and the risk prediction device 106. The own vehicle speed data and own vehicle acceleration data are output. The driving characteristic analysis device 103 analyzes the driving characteristics of the driver from the own vehicle speed data and the own vehicle acceleration data input from the own vehicle state detection device 102.

  The storage device 104 includes an operation characteristic database 109, and the operation characteristic database 109 is sequentially updated based on the analysis result of the operation characteristic by the operation characteristic analysis device 103. The computing device 105 calculates the traveling direction and speed of the detected object from the positional relationship between the detected object and the own vehicle, the own vehicle traveling direction data and the own vehicle speed data, and sends the traveling direction to the risk prediction device 106. Output data and speed data. The risk prediction device 106 estimates the potential danger around the own vehicle from the traveling direction and speed of the object, the traveling direction and speed of the own vehicle, and the driving characteristics stored in the driving characteristics database 109. . When danger is predicted by the risk prediction device 106, the risk prediction information is notified to the driver through the display 107 and the speaker 108.

  FIG. 2 is a flowchart for providing danger prediction information to the driver. The vehicle information providing apparatus first detects the traveling direction of the host vehicle, the host vehicle speed, and the host vehicle acceleration (step S201). Next, the driving characteristic of the driver is analyzed from the detected own vehicle speed and own vehicle acceleration (step S202), and the driving characteristic database 109 of the storage device 104 is updated based on the analysis result (step S203).

  After grasping the driving characteristics of the driver in step S202, the surroundings of the host vehicle are scanned by the ultrasonic sensor 101 to grasp the presence or absence of an object (step S204). If no object is detected, the process returns to step S201. When an object is detected in step S204, the positional relationship with the own vehicle is further recognized with respect to the detected object (step S206). Next, the traveling direction and speed of the object are calculated by the traveling direction and the traveling speed of the own vehicle and the calculation device 105 based on the temporally continuous data of the positional relationship of the recognized object (step S207).

  Depending on the state of the host vehicle detected in step S201, the driving characteristics of the driver updated in step S203, the traveling direction and speed of the object, whether there is a danger between the host vehicle and the object, A potential risk is determined (step S208).

  If it is determined in step S208 that there is no danger, the process returns to step S201. If danger is predicted, the degree and direction of the danger are notified to the driver by the display 107 and the speaker 108 (step S209). The vehicle information providing apparatus analyzes the driving characteristics of the driver from the driver's avoidance behavior (step S210), and updates the driving characteristics database 109 with the analysis result, thereby reflecting the driving characteristics of the driver at the time of danger. Provision can be made. In addition, steps S201 to S203 can grasp the driver's normal motion characteristics regardless of the presence of a surrounding object, so that the driver's driving orientation can be grasped.

  The peripheral object position detection means may use at least one of vehicle-to-vehicle, road-to-vehicle communication, or inter-vehicle communication. Also, when using communication and the recognized object is a vehicle having a communication function, the means for calculating the speed or acceleration of the recognized object is realized by acquiring the speed or acceleration of the other vehicle through communication. May be. Further, the peripheral object position detecting means may use a stereo camera.

  Further, as the notification means, at least one of the display 107 and the speaker 108 may be used. Moreover, although the risk prediction apparatus 106 used the speed of the surrounding object at the time of danger prediction, you may use the acceleration of a surrounding object.

101 Ultrasonic sensor (peripheral object position detection means)
102 Own vehicle state detection device (own vehicle state detection means)
103 Operating characteristic analysis device (analysis means)
104 storage device 105 arithmetic device (arithmetic means)
106 Risk prediction device 107 Display
108 Speaker (sound generator)
110 Risk prediction means

Claims (2)

  Surrounding object position detection means for detecting the position of an object existing around the own vehicle, and own vehicle state detection means for detecting the own vehicle state consisting of at least one of the own vehicle speed or the own vehicle acceleration and the own vehicle traveling direction; Computation means for calculating the traveling direction of the object based on the time-series change of the position of the object and the own vehicle state, and a risk that is latent around the own vehicle based on the traveling direction of the object and the own vehicle state A vehicle information providing device comprising a risk prediction means for predicting safety and a notification means for notifying the driver of the danger, wherein the risk prediction means is a driver obtained by the own vehicle state detection means. An information providing apparatus for a vehicle, comprising: an analyzing means for analyzing a driving characteristic of the vehicle; and a storage device for storing an analysis result by the analyzing means.   The vehicle information providing apparatus according to claim 1, wherein the notification unit includes at least one of a display and a sound generator.

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