JP2010195063A - Speed sense control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speed sense control device achieving safe driving by controlling speed feeling of a driver without impeding front visibility of the driver nor imparting unnatural feeling and unpleasant feeling to the driver. <P>SOLUTION: The speed sense control device includes a speed sensor (speed detection means) 1 detecting traveling speed of one's own vehicle, a vertex position arithmetic circuit 9 and a projected graphic arithmetic circuit 10 (arithmetic means) calculating the size of an inverted triangle as visual information based on the traveling speed detected by the speed sensor 1, and a display device (display means) 5 displaying the inverted triangle calculated by the vertex position arithmetic circuit 9 and the projected graphic arithmetic circuit 10 on windshield. For instance, the vertex position arithmetic circuit 9 and the projected graphic arithmetic circuit 10 set the size of the inverted triangle larger with increase of traveling speed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a speed sensation control device that controls a speed sensation of a driver who drives a vehicle.

  For example, it is known that when driving on a highway continues for a long time and then shifts to normal driving on a general road, the driver tends to overspeed due to the driver's speed sensation.

  Therefore, in Patent Document 1, before the first visual information outside the vehicle (the flow of scenery outside the vehicle, etc.) that the driver looks at the time of maneuvering, as the second visual information, from the peripheral part of the driver's vision. Speed sensation control provided with visual information providing means for providing the driver with second visual information (such as a dod pattern) of either contraction moving toward the central portion or enlargement moving from the central portion toward the central portion A device has been proposed.

  When the driver sees the first visual information move uniformly over a wide area in the field of view, the speed control device moves the body that is actually stationary in the direction opposite to the sensory stimulus. It is a phenomenon that uses the phenomenon perceived as being (guided movement). Such a phenomenon is projected on the retina in the same way, either when you start moving or when you start to move around when you project an environment that can be seen from the actual space on the human retina. It happens.

  Specifically, if you drive on a highway for a certain period of time, it adapts to the flow of visual information such as the scenery at that time and becomes the reference, so if you drive on a general road after that, you usually travel on a general road There is a tendency to overspeed because it feels slower than the sense of speed when doing. This will be described in more detail with reference to FIGS.

  4 to 6, (a) is a diagram showing the field of view of the driver while driving, (b) is a vector diagram of visual information and kinesthetic senses, and when driving on a highway, the driver A flow of a fast visual stimulus (landscape) moving in the direction of the arrow can be visually recognized through the windshield 103 shown in a). When the flow is represented by a vector, α and β shown in FIG. 4B are obtained, and the driver is induced to feel that the combined vector γ is moving in the opposite direction (inductive motion). If it continues more, it will adapt to it. In FIG. 4A, reference numeral 102 denotes a handle.

  In order to eliminate the above phenomenon, as shown in FIG. 5A, a visual stimulus (from the peripheral vision of the driver) in a direction opposite to the visual stimulus (direction and speed of the scenery flowing) on the windshield when driving on the highway. What is necessary is just to provide visual information that becomes smaller while moving toward the central portion. Then, as shown in FIG. 5 (b), the induced motion in the direction opposite to the traveling direction is induced, and the adaptation to the flow of the visual stimulus is canceled by the induced motion induced in the different direction. The sense of madness is eliminated.

  In the speed sensation control device proposed in Patent Document 1, as the second visual information to be provided to the driver, a meaningless figure such as a white circle as shown in FIG. In addition, the graphic size is displayed so as to gradually decrease toward the center. In this case, it is preferable not to make the figure too dark so that the figure does not interfere with the driver's vision.

  On the other hand, as shown in FIG. 6 (a), on the windshield or the like, from the central viewing portion to the peripheral viewing portion, in order to increase the speed feeling felt by the driver during sudden acceleration / deceleration or excessive meandering operation, as shown in FIG. Enlarge and display the moving random dodd pattern. Then, as shown in FIG. 6 (b), the driver is induced to feel a sense of self-motion in the direction opposite to the displayed synthetic vector of the apparent moving direction, that is, the traveling direction of the vehicle. As a result, the feeling of speed felt by the driver is higher than the actual driving speed, so the driver feels psychologically “too fast” and turns the driver's awareness toward lowering the vehicle speed. Can do.

JP-A-9-263216

  However, as proposed in Patent Document 1, the second visual information includes a contraction that moves from the peripheral part of the driver's vision toward the central part or a dod pattern that moves from the central part toward the central part. When the visual information 2 is displayed on the windshield or the like, there are problems that the driver's forward visibility is hindered and that the driver feels uncomfortable or feels uncomfortable or annoying.

  The driver recognizes and identifies the detailed information (structure, etc.) necessary for the direction of travel in the central vision, and drives while acquiring spatial information (shape and structure, etc. cannot be identified) in the peripheral vision such as movement and speed. Therefore, as proposed in Patent Document 1, when a large amount of visual information is displayed over the entire surface of the windshield and side glass, it is impossible to distinguish the form and shape in peripheral vision. This makes it difficult to distinguish from a pedestrian who has jumped out.

  The present invention has been made in view of the above problems, and the object of the present invention is to control the driver's speed feeling without hindering the driver's forward visibility or giving the driver a sense of discomfort or discomfort. It is an object of the present invention to provide a speed sensation control device that can realize a smooth driving.

  In order to achieve the above object, the invention described in claim 1 is a speed detection means for detecting the traveling speed of the host vehicle, and a size of an inverted triangle as visual information based on the traveling speed detected by the speed detection means. The speed sensation control device is configured to include a calculation means for calculating the above and a display means for displaying an inverted triangle of the size calculated by the calculation means on the windshield.

  According to a second aspect of the present invention, in the first aspect of the invention, the calculating means sets the size of the inverted triangle to be larger as the traveling speed increases.

  According to a third aspect of the present invention, in the invention according to the second aspect, the computing means lowers the apex position of the inverted triangle downward as the traveling speed increases in a range where the traveling speed is equal to or less than a set value. When the speed exceeds a set value, the length of the base of the inverted triangle is increased as the traveling speed increases.

  Invention of Claim 4 is provided with the display judgment means which judges whether the said inverted triangle is displayed on a windshield in the invention in any one of Claims 1-3, and traveling speed is in a predetermined range. Inverted triangles are displayed on the windshield only in the case of, and are not displayed in other cases.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the steering angle detecting means for detecting the steering angle of the vehicle, and the steering angular speed calculating means for calculating the steering angular speed from the steering angle detected by the steering angle detecting means. And the inverted triangle is not displayed on the windshield when both the steering angular speed and the traveling speed exceed the set values.

  The invention according to claim 6 is characterized in that, in the invention according to claim 5, the vertex position of the inverted triangle is changed to the right and left according to the steering angle detected by the rudder angle detecting means.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, further comprising illuminance detection means for detecting ambient illuminance, and the luminance of the inverted triangle according to the illuminance detected by the illuminance detection means. It is characterized by changing.

  The invention according to claim 8 is characterized in that, in the invention according to any one of claims 1 to 7, the oblique line of the inverted triangle is displayed by a bright spot flow flowing from the apex to the base.

  According to the invention described in claim 1, since the inverted triangle is displayed on the windshield and the size of the inverted triangle is changed according to the traveling speed, the attractiveness of the diagonal line on the upper right of the inverted triangle, The number of gazes of the driver during driving near the area increases, and a building or the like existing beside the traveling road enters the area where the number of gazes increases. For this reason, the driver recognizes the flow of objects such as buildings (movement of visual stimulation) more strongly than usual, thereby controlling the speed sensation of the driver.

  Here, the triangle is known as a highly attractive figure, and the inverted triangle that is the inverted top and bottom of the triangle is close to the inverted shape of the road surface seen in the vehicle traveling direction and the driver feels uncomfortable and The discomfort is considered small. In addition, it is known that the diagonal line in the upper right of the line that constitutes the triangle shows high attractiveness, and the inverted triangle displays only its hypotenuse, so the driver's forward visibility depends on the inverted triangle. There is no hindrance.

  According to the second and third aspects of the present invention, since the size of the inverted triangle displayed on the windshield is increased as the traveling speed increases, the flow of an object (the movement of the visual stimulus) increases as the traveling speed increases. ) Will be recognized more strongly by the driver. For this reason, the driver's perceptive self-motion sensation is greater than usual, and the driver feels a sense of speed faster than the actual vehicle speed. It is possible to realize safe driving by reducing the actual traveling speed by making the driver aware of the driving speed of the vehicle to be driven.

  According to the invention of claim 4, when the vehicle is traveling in a speed range where the driver may not sense a sense of speed, for example, when traveling at a low speed or traveling on a highway at high speed If the inverted triangle is not displayed on the windshield, the forward visibility of the driver is not hindered, and the driver does not feel uncomfortable or uncomfortable.

  According to the fifth aspect of the present invention, it is normally impossible for the steering angular speed and the traveling speed to exceed the respective set values. In such a case, the inverted triangle is not displayed on the windshield. Therefore, the forward visibility of the driver is not impaired, and the driver does not feel uncomfortable or uncomfortable.

  According to the invention described in claim 6, since the vertex position of the inverted triangle is changed to the left and right according to the steering angle, the display of the inverted triangle can be made to follow the change of the driver's field of view with respect to the windshield by the steering operation. it can.

  According to the seventh aspect of the invention, since the brightness of the inverted triangle is changed according to the brightness of the surroundings, the driver is displayed on the windshield by increasing the brightness of the inverted triangle when the surroundings are bright, for example. You can clearly see the inverted triangle.

  According to the invention described in claim 8, the driver can visually recognize the hypotenuse of the inverted triangle by the bright spot flow flowing from the apex of the inverted triangle toward the base, and the driver's sense of speed can be obtained by the attractiveness of the hypotenuse. Be controlled.

It is a side view of the vehicle front part provided with the speed control apparatus which concerns on this invention. It is a block diagram which shows the system configuration | structure of the speed control apparatus which concerns on this invention. (A)-(h) is a figure which shows the shape change of the inverted triangle as visual information displayed on a windshield. (A) is a figure which shows the visual field of the driver who is driving, (b) is a vector diagram of visual information and kinesthetic sense. (A) is a figure which shows the dod pattern displayed on a windshield, (b) is a vector diagram of visual information and a kinesthetic sense. (A) is a figure which shows the dod pattern displayed on a windshield, (b) is a vector diagram of visual information and a kinesthetic sense.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a side view of a front portion of a vehicle equipped with a speed sensation control device according to the present invention, FIG. 2 is a block diagram showing a system configuration of the speed sensation control device, and FIGS. It is a figure which shows the shape change of the inverted triangle as visual information to display, The speed sensor 1 which detects a running speed from the rotation speed of the front wheel 100, and the rotation angle of the handle 102 are shown in the front part of the vehicle 100 shown in FIG. The steering angle sensor 2 for detecting the steering angle of the vehicle 100, the illuminance sensor 3 for detecting the brightness of the environment around the traveling vehicle 100, the speed sensor 1, the steering angle sensor 2, and the illuminance sensor 3 are obtained. The control processing device 4 performs processing of visual information displayed on the windshield 103 based on various information, and the visual information processed by the control processing device 4 is dried using, for example, a head-up display. And a display device 5 for projecting a front glass 103 that visibility in front is provided with a speed sensory control device according to the present invention these are constituted, the details of its construction is shown in FIG.

  Here, the control processing device 4 shown in FIG. 1 includes a display luminance circuit 6, a steering angular velocity calculation circuit 7, a display determination circuit 8, a vertex position calculation circuit 9, a projected figure calculation circuit 10, and a vertex position calculation circuit 11 shown in FIG. 2. It is comprised including.

  Thus, the speed control device according to the present invention displays an inverted triangle (virtual image) T as visual information on the windshield 103 shown in FIG. The size (including the shape and the position of the apex P) is changed according to the traveling speed.

  That is, in the block diagram shown in FIG. 2, the travel speed detection signal detected by the speed sensor 1 is input to the display determination circuit 8 and the vertex position calculation circuit 9. Then, the vertex position calculation circuit 9 calculates the vertex position (height direction) of the inverted triangle T (see FIG. 3) to be projected onto the windshield 103 based on the signal input from the speed sensor 1, and calculates the result. It outputs to the projection figure arithmetic circuit 10. The projected figure calculation circuit 10 calculates the shape of the inverted triangle T based on the vertex position and the traveling speed of the inverted triangle T obtained by the vertex position calculation circuit 9, and the result is output to the display device 5. The display device 5 displays an inverted triangle T as shown in FIG. At this time, when the ambient brightness is detected by the illuminance sensor 3 and the detection signal is input to the display luminance calculation circuit 6, the display luminance is calculated by the display luminance calculation circuit 6, and the result is displayed on the display device 5. Are output. Then, the luminance of the inverted triangle T displayed on the windshield 103 by the display device 5 is set to an appropriate value according to the ambient brightness. Specifically, the brightness of the inverted triangle T to be displayed is set higher as the surrounding is brighter.

  The height of the inverted triangle T displayed on the windshield 103 gradually increases as the traveling speed increases as shown in FIGS. 3 (a) → (b) → (c) → (d). Position moves down). Here, the inverted triangle T displayed when the traveling speed is in a safe range is the range shown in FIGS. 3A to 3D, and the determination as to whether or not the traveling speed is safe is shown in FIG. The road information (for example, road width, number of lanes, national road / prefectural road / city road, etc.) stored in the navigation system 12 shown in FIG.

  When the traveling speed increases beyond a safe range, the vertex position calculation circuit 11 shown in FIG. 2 calculates the horizontal width (base length) of the inverted triangle T based on the road information input from the navigation system 12. Then, the result is output to the projected figure calculation circuit 10. Then, the projected figure calculation circuit 10 calculates the size (shape) of the inverted triangle T and transmits the result to the display device 5, and the display device 5 has the inverted triangle T having the size (shape) corresponding to the traveling speed. Is displayed on the windshield 103. Specifically, when the traveling speed exceeds the safe speed, the lateral width (the length of the bottom side) of the inverted triangle T increases as the traveling speed increases. FIG. 3 (e) → (f) → (g) → (h ) Gradually spread as shown in.

  By the way, the triangle is known as a highly attractive figure, and the inverted triangle T that is inverted upside down of the triangle is close to the inverted shape of the road surface seen in the vehicle traveling direction, so the driver feels uncomfortable. It is considered small. Of the line segments constituting the triangle, it is known that the upper right diagonal line (the hypotenuse) shows high attractiveness.

  Therefore, in the present embodiment, the size (shape) of the inverted triangle T projected on the windshield 103 is changed as shown in FIGS. The length of the oblique line (in particular, the upper right oblique line) of the inverted triangle T entering the field of view is increased.

  As described above, if the length of the oblique line (in particular, the upper right oblique line) of the inverted triangle T becomes longer as the traveling speed increases, the area of the inverted triangle T is increased depending on the attractiveness of the upper right oblique line. The number of gazes of the driver during driving in the vicinity will increase. In addition, since the area (the area where the number of gazing increases due to the attractiveness) decreases downward as the traveling speed increases, a structure (side the traveling road where the number of gazing increases as the traveling speed increases) Therefore, the driver recognizes the flow of objects (the flow of visual stimulation) more strongly than usual. As a result, the driver's perceived guidance movement becomes larger than usual, which makes the driver feel the speed feeling felt faster than the actual vehicle speed. As a result, the driver is psychologically "too fast". The driver's consciousness can be directed in the direction of decreasing the traveling speed of the vehicle 100 to be driven, and the actual traveling speed can be suppressed.

  Therefore, according to the speed sensation control device according to the present invention, for example, it is possible to eliminate the driver's speed sensation error when moving to normal driving on a general road after continuing high speed driving on a highway for a long time, The driver tries to drive at an appropriate speed on a general road, and can suppress excessive speed. In the present embodiment, the hatched portion (upper right and left-upward hatched portion) of the inverted triangle T displayed as visual information on the windshield 100 is displayed as a line segment, but instead of the line segment display, the inverted triangle T Even if the bright spot flow display from the top to the bottom is performed, the same effect as described above can be obtained.

  By the way, when the vehicle is traveling at a low speed (for example, 40 km / h or less), which is safe for traveling, or when traveling on a highway at high speed, the driver may feel a sense of speed. In addition, if the inverted triangle T is always displayed as visual information on the windshield 103, the driver feels troublesome. In such a case, it is better not to display the inverted triangle T.

  Therefore, in the present embodiment, the display determination circuit 8 shown in FIG. 2 displays the inverted triangle T as visual information on the windshield 101 based on the signals input from the speed sensor 1 and the steering angular speed calculation circuit 9. Judgment is made whether or not. Specifically, the navigation system 12 shown in FIG. 2 mounted on the vehicle 100 shown in FIG. 1 always determines whether the traveling position of the vehicle is an expressway or a general road, and the traveling speed is certain. When the speed is higher than a certain speed (for example, 80 km / h), the speed sensation control device is stopped so that the inverted triangle T is not displayed on the windshield 101. In addition, when the traveling position of the vehicle deviates from the main road of the expressway and falls below a certain speed (for example, 50 km / h), the speed sensation control device is activated and an inverted triangle T is displayed on the windshield 103. Like to do.

  On the other hand, whether or not the inverted triangle T can be displayed based on the signal from the rudder angular velocity calculation circuit 7 is determined as follows.

  The steering angle sensor 2 monitors the steering angle of the steering wheel 102 when the driver is driving and the steering angle per unit time during steering (steering angular velocity = speed at which the steering wheel 102 is cut). Here, since a wide average vehicle speed value is observed when the speed at which the steering wheel 102 is cut is a certain value or less, a dangerous driving operation situation (for example, a situation where a dangerous avoidance exercise is performed) is obtained when the speed is greater than the certain value. Presumed to be. Therefore, for example, in such a situation, the display of the inverted triangle T by the speed sensation control apparatus seems to cause confusion, and therefore the display of the inverted triangle T is not performed in the present embodiment.

  That is, when the detection signal from the rudder angle sensor 2 is input to the rudder angular speed calculation circuit 7, the rudder angular speed calculation circuit 7 calculates the rudder angular speed (speed at which the steering wheel 102 is cut) and displays the result. Output to the decision circuit 8. Then, the display determination circuit 8 determines whether or not the steering angular speed (speed at which the steering wheel 102 is turned) and the average vehicle speed are in a region (for example, a vehicle speed of 50 km / h, a steering angular speed ° / sec). A signal indicating that the inverted triangle T is not displayed is output to the display device 5 when it is in the area, and a signal indicating that the inverted triangle T is displayed when it is outside the area. Output for.

  When displaying the inverted triangle T in a state where the steering operation is being performed, the steering angle signal detected by the steering angle sensor 2 is input to the vertex position calculation circuit 11. Then, the vertex position calculation circuit 11 calculates the vertex position (left and right direction) of the inverted triangle T (see FIG. 3) projected on the windshield 103 based on the signal input from the steering angle sensor 2, and the result is calculated. It outputs to the projection figure arithmetic circuit 10. The projected figure calculation circuit 10 calculates the size (shape) of the inverted triangle T based on the vertex position and traveling speed of the inverted triangle T obtained by the vertex position calculation circuit 11, and the result is given to the display device 5. When output, the display device 5 displays the inverted triangle T on the windshield 103. Specifically, the vertex position of the inverted triangle T moves in the steering direction in the left-right direction. When the vehicle 100 is traveling on the right curve, the vertex position moves to the right side, and conversely, the vehicle 100 travels on the left curve. The vertex position moves to the left when

  As described above, according to the speed sensation control device according to the present invention, the driver's speed sensation is controlled without disturbing the driver's forward visibility or giving the driver a sense of discomfort or discomfort. The effect that it is realizable is acquired.

1 Speed sensor (speed detection means)
2 Rudder angle sensor (steering angle detection means)
3 Illuminance sensor (illuminance detection means)
4 Control processing device 5 Display device (display means)
6 Display brightness calculation circuit 7 Steering angular velocity calculation circuit 8 Display judgment circuit (display judgment means)
9 Vertex position calculation circuit (calculation means)
10 Projection figure calculation circuit (calculation means)
11 Vertex position calculation circuit (calculation means)
12 navigation system 100 vehicle 101 front wheel 102 handle 103 windshield T inverted triangle

Claims (8)

  Speed detecting means for detecting the traveling speed of the own vehicle, computing means for computing the size of an inverted triangle as visual information based on the traveling speed detected by the speed detecting means, and the magnitude computed by the computing means A speed sensation control device comprising display means for displaying the inverted triangle on the windshield.   2. The speed sensation control apparatus according to claim 1, wherein the calculation means sets the size of the inverted triangle to be larger as the traveling speed increases.   The computing means lowers the apex position of the inverted triangle downward as the traveling speed increases in a range where the traveling speed is equal to or less than a set value, and when the traveling speed exceeds the set value, the length of the base of the inverted triangle is decreased. 3. The speed sensation control apparatus according to claim 2, wherein the speed sensation control apparatus is lengthened as the traveling speed increases.   Display judging means for judging whether or not the inverted triangle is displayed on the windshield, and the inverted triangle is displayed on the windshield only when the traveling speed is within a predetermined range, and is not displayed otherwise. The speed sensation control apparatus according to any one of claims 1 to 3.   When the steering angle detection means for detecting the steering angle of the vehicle and the steering angular speed calculation means for calculating the steering angular speed from the steering angle detected by the steering angle detection means, both the steering angular speed and the traveling speed exceed each set value 5. The speed sensation control device according to claim 4, wherein the inverted triangle is not displayed on a windshield.   6. The speed sensation control device according to claim 5, wherein the vertex position of the inverted triangle is changed to the right and left according to the steering angle detected by the rudder angle detection means.   The speed sensation control according to any one of claims 1 to 6, further comprising an illuminance detection means for detecting ambient illuminance, wherein the brightness of the inverted triangle is changed according to the illuminance detected by the illuminance detection means. apparatus.   The speed sensation control device according to any one of claims 1 to 7, wherein the display of the oblique line of the inverted triangle is performed by a bright spot flow flowing from the apex to the base.

Images