JP2012168958A - Driving support device and method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify of a comparison result based on comparison between acceleration detected by an accelerometer for detecting acceleration generated while a vehicle is being driven and a boundary area of the acceleration which a driver has set before starting to drive the vehicle.SOLUTION: A driving support device 21 comprises: accelerometers 43 and 45 for detecting the acceleration generated while a vehicle is being driven; a memory 33 for storing a friction circle representing a boundary area of the acceleration which a driver has set before starting to drive the vehicle; a comparison means 27 for comparing the acceleration detected by the accelerometer while the vehicle is being driven and the friction circle; and a notification means 39 for notifying of a comparison result based on comparison by the comparison means 27 while the vehicle is being driven.

Description

  The present invention relates to a driving support apparatus and a method thereof, and more specifically, detects acceleration generated during driving of a vehicle (for example, an automobile, a motorcycle, a bicycle, and other vehicles), The present invention relates to a driving support device that compares a friction circle indicating a boundary region of acceleration set by a driver before driving with acceleration detected by an accelerometer during driving and notifies a comparison result based on the comparison, and a method thereof.

  Traditionally, amateur drivers who drive on the circuit often do not know how fast the friction between the tire and the road surface reaches the limit (so-called slip), so the performance of the tire of the car that you drive in the corner In most cases, the vehicle is operated without knowing how much it is exerting. In addition, a professional driver who runs on a circuit may rely on a so-called feeling without being conscious of the limit of friction between a tire and a road surface.

  On the other hand, when evaluating the driving technique of a driver traveling on a circuit, there is an evaluation method based on lap time or section time.

  In addition, in the simulation device, even when driving virtually, even if a simulation method is performed on the image by calculating the limit of friction between the tire and the road surface, the driver (player) is required to perform acceleration and performance until the friction circle is exceeded. I can't feel the limits of In other words, not only is it difficult to steer near the vehicle performance limit, but it often easily exceeds the limit and results in a spin.

  See also Patent Document 1 and Patent Document 2.

JP 2002-212378 A JP 2003-104139 A

  Such a conventional method has the following problems. In other words, amateur drivers who run on the circuit often drive without knowing how well the tires of the cars they drive at the corners, so when practicing races that compete for time, There was a problem that technology did not improve because it relied on sense. Further, depending on the driver, there is a problem that the vehicle may slip because it is forced to search for the limit of friction between the tire and the road surface, which is dangerous.

  On the other hand, in the simulation device, when driving virtually, unlike the actual vehicle driving, the motor performance limit point is predicted based only on the information on the image to control the front and rear, the acceleration generated in the left and right cannot be experienced at all. There was a problem that had to be done.

  The present invention has been made in view of the above-described problems. The invention according to claim 1 stores an accelerometer that detects acceleration generated in the vehicle during traveling and a boundary region of acceleration set before traveling. A driving support apparatus comprising: a memory; a comparison unit that compares the acceleration detected by the accelerometer during the travel with the boundary region; and a notification unit that reports a comparison result based on the comparison by the comparison unit during the travel. It is.

  According to a second aspect of the present invention, there is provided an accelerometer that detects acceleration generated in the vehicle during traveling, a memory that stores a friction circle indicating a boundary region of acceleration set before traveling, and the accelerometer during traveling. It is a driving support device having comparison means for comparing the detected acceleration with the friction circle, and notification means for notifying a comparison result based on the comparison by the comparison means during the traveling.

  The invention according to claim 3 is the driving support device according to claim 2, wherein the boundary region of the friction circle has a first boundary for notifying a caution and a second boundary for notifying a danger.

  The invention according to claim 4 is the driving support according to claim 3, wherein when the acceleration reaches the boundary area, the notification means notifies the driver of a different type of warning sound or warning display for each boundary. Device.

  The invention according to claim 5 is the driving support apparatus according to claim 4, wherein the driver is notified of a continuous sound in the case of acceleration that protrudes outside the boundary region of the set friction circle.

  The invention according to claim 6 further comprises output means for outputting a record of the acceleration of the vehicle generated during the actual driving as electronic information together with the friction circle after completion of the driving. It is a support device.

  The invention according to claim 7 includes a step in which the accelerometer detects acceleration generated in the vehicle during traveling, a step in which the reading unit reads a boundary region of acceleration set before traveling from the memory, and a comparison unit includes: A driving support method comprising: comparing the acceleration detected by the accelerometer during the traveling with the boundary region; and notifying means notifying a comparison result based on the comparison by the comparing means during the traveling. is there.

  According to an eighth aspect of the present invention, there is provided a display device that displays an effect image, display control means that performs control to display a vehicle in a variable manner on the display device in response to an operation by an operator, and the operation in response to an operation by the operator. Acceleration calculating means for performing control for calculating acceleration generated in the vehicle, memory for storing a boundary region of acceleration set before the operation, and acceleration calculated by the accelerometer during the operation and the boundary region are compared It is a simulation apparatus which has a comparison means and a notification means for notifying a comparison result based on the comparison by the comparison means during the operation.

  The invention according to claim 9 is a display device that displays an effect image, display control means that performs control to display a vehicle in a variable manner on the display device in response to an operation of the operator, and the operation in accordance with the operation of the operator. Acceleration calculating means for performing control for calculating acceleration generated in the vehicle, memory for storing a friction circle indicating a boundary region of acceleration set before the operation, acceleration calculated by the accelerometer during the operation, and the friction circle And a notifying means for notifying a comparison result based on the comparison by the comparing means during the operation.

  The invention according to claim 10 is the simulation apparatus according to claim 9, wherein the boundary area of the friction circle has a first boundary for notifying a caution and a second boundary for notifying a danger.

  The invention according to claim 11 is the simulation device according to claim 10, wherein when the acceleration reaches the boundary area, the notification means notifies the driver of a different type of warning sound or warning display for each boundary. It is.

  The invention according to claim 12 is the simulation apparatus according to claim 11, which notifies the driver of a continuous sound in the case of acceleration that protrudes outside the boundary region of the set friction circle.

  The invention according to claim 13 is the simulation apparatus according to any one of claims 9 to 12, further comprising output means for outputting a record of actual operation as electronic information together with the friction circle after the operation is completed.

  According to a fourteenth aspect of the present invention, the display control means performs a control of variably displaying the vehicle image on the display device according to the operation of the operator, and the acceleration calculation means is configured to perform the control according to the operation of the operator. A step of performing control for calculating acceleration generated in the vehicle, a step of reading from the memory a boundary region of acceleration set before the operation, and an acceleration calculated by the accelerometer during the operation by the comparison unit The simulation method includes a step of comparing the boundary region and a step of notifying the comparison result based on the comparison by the comparison unit during the operation.

  As described above, according to the present invention, when the horizontal acceleration applied to the vehicle reaches the vicinity of the limit of the adhesion capability of the tire, it is transmitted to the driver in real time by a notification method such as sound or light, so that the driver further tires. Since the assistance is provided so that the performance of the vehicle can be brought out, there is an effect that the driver can perform an appropriate driving without depending on a sense.

  Furthermore, since the alarm is actually notified before slipping the limit of friction between the tire and the road surface, the driving technique can be improved while ensuring safety.

  In addition, since the simulation apparatus virtually calculates and notifies the acceleration actually generated in the vehicle, there is an effect that a simulation closer to the actual driving can be performed instead of a simple steering operation simulation.

It is an external view which shows the external appearance of a driving assistance device. It is the schematic which shows the structure of the outline of a driving assistance device. It is the schematic which shows the structure of the outline of a driving assistance device. It is explanatory drawing explaining calculation of an acceleration. It is explanatory drawing explaining a database. It is a flowchart explaining operation | movement of a driving assistance device. It is explanatory drawing explaining a corner. It is explanatory drawing explaining a friction circle. It is explanatory drawing explaining a course. It is explanatory drawing explaining the acceleration in driving | running | working a course. It is the schematic which shows the structure of the outline of the simulation apparatus of a vehicle. It is explanatory drawing explaining the screen of a simulation apparatus.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an appearance of the driving support device 1. The driving support device 1 includes a power switch 3, a biaxial G sensor 5, a target G setting dial 7, and a speaker 9 in the main body.

  The power switch 3 performs power ON / OFF control of the driving support device 1. The biaxial G sensor 5 detects acceleration generated in the vehicle when the driving support device 1 is installed in the vehicle.

  Further, the target setting dial 7 sets an acceleration value (for example, near the maximum value at which slip occurs between the tire and the road surface) for actually informing a warning sound or the like by turning the dial. The speaker 9 is for generating a notification sound when the acceleration detected by the biaxial G sensor reaches the acceleration set by the target setting dial 7.

  Please refer to FIG. 1 shows a schematic configuration of a control system 21 that controls the driving support apparatus 1. The control system 21 includes a control unit 23, and the control unit 23 includes a combined vector calculation unit 25, a comparison calculation unit 27, a notification processing unit 29, and a microcomputer 31.

The combined vector calculation unit 25 performs a calculation for combining a vector of lateral acceleration (Gy) and a vector of longitudinal acceleration (Gx). That is,
Composite vector G = ((Gy) 2+ (Gx) 2) 1/2
Is calculated by a mathematical expression represented by Since it is a vector, information on the direction is given together with the magnitude of the acceleration. Here, the direction is the direction of acceleration actually generated in the vehicle.

As shown in FIG. 4, the centripetal acceleration generated in the vehicle turning in a circle is obtained as follows. When turning around a corner of radius r at speed V,
Centrifugal force F = (m × V2) / r
Centripetal acceleration α = V2 / (r × g)
For example, when turning at a radius of 100 at 120 Km / h,
Centripetal acceleration α = (33.3 m / s) 2 / (100 m × 9.8 m / s 2) = 1.13 G is obtained.

For example, when decelerating from 200 Km / h to 196 Km / h in 0.1 seconds,
The amount of change in speed is -4 km / h = -1.111 m / sec.
−1.111 m / sec / 0.1 sec = −11.11 m / sec 2 = −1.133G.

  Since the vehicle has accelerations that occur in the front-rear direction, the acceleration sensor determines the magnitude and direction of the acceleration by detecting these accelerations separately into lateral and front-rear accelerations. That is, the lateral acceleration is obtained from the speed and the turning radius, while the longitudinal acceleration is obtained from the speed change. By combining these two accelerations, a combined acceleration G (vector) can be easily obtained.

  The friction circle of the vehicle is naturally determined from the vehicle performance and the road surface condition. It is possible to evaluate by superimposing the synthetic vector on the obtained friction circle.

  The comparison calculation unit 27 performs a process of comparing the value of the combined vector calculated by the combined vector calculation unit 25 with the friction circle of the acceleration set value set in advance by a driver or the like.

  Here, the friction circle is a circular line (or region) obtained by smoothly connecting the boundary values of the direction (front and rear, left and right) and the magnitude of the acceleration generated in the vehicle in each direction, for example, as a pie chart (for example, The vertical axis represents acceleration applied to the front and rear of the vehicle, and the horizontal axis represents acceleration applied to the left and right of the vehicle. That is, the tire and the road surface of the vehicle do not slip inside this circular line (or area), but the friction between the tire and the road surface exceeds the limit at the acceleration outside the friction circle, and the vehicle slips. Is something that causes In addition, the friction circle broadly includes a boundary value of friction, and includes all that can be compared with the acceleration detected by the acceleration sensor and the acceleration set with the set value.

  The notification means includes a first boundary (acceleration close to the acceleration at which the tire slips on the road surface) and a second boundary (the tire slips on the road surface) that notifies danger in the boundary area of the friction circle. When the acceleration of the vehicle reaches the boundary area, a different type of warning sound or warning display is notified to the driver for each boundary (stage). In the case of an acceleration that protrudes outside the set boundary region of the friction circle, a continuous sound is notified to the driver.

  The microcomputer functions as a computer that performs arithmetic processing for executing the processing program.

  The control system 21 further includes a determination reference input unit 33, a circuit information database 35, a liquid crystal display 37, a notification unit 39, and a travel and determination data memory 41. The determination criterion input unit 33 inputs the friction circle. For example, a circle may be automatically created as a friction circle by inputting an acceleration in the front-rear direction and a boundary value of the acceleration in the left-right direction.

  The circuit information database 35 stores course layout information of a circuit field.

  The travel and determination data memory 41 stores travel determination reference data, travel result determination data, and the like.

  With reference to FIG. 5, the criteria for judging the driving technique will be described. The determination includes the maximum deceleration section A, turn-in B, intermediate area C, and escape area D (see FIG. 7).

And in the maximum deceleration section A, the issues imposed on the driver (guide the vehicle to the deceleration start point in preparation for sudden deceleration; sudden deceleration in preparation for turn-in; downshift if necessary);
Related factors (driver operation, steering wheel, brake, gear shift; vehicle information, steering angle, yaw rate, pedaling force, deceleration G, ABS performance, speed change, gear position, engine speed; road surface, course map, road surface / tire friction coefficient, Slope, cant, travel position information; equation of motion etc.)
Details of evaluation (Is the brake starting point appropriate?) Is the steering to cancel the yaw change? Does the target deceleration G continue to occur? Is the effective limit used effectively? Shift down operation Is appropriate; whether there is an overrev, etc.) is stored.

In turn-in section B, the task imposed on the driver (to generate a yaw moment in the vehicle by steering; leave braking to make the best use of the front wheel's adhesive ability (by moving the load to the front wheel and reducing the ground pressure of the front wheel) Increase); guide the vehicle to the target point),
Related factors (steering wheel and brake as driver operation; steering angle, yaw rate, lateral G vector as vehicle information, weight distribution of four wheels; road surface / tire friction coefficient as road surface, gradient, cant, driving position information course map; motion Equation)
The evaluation content (whether the friction circle of the vehicle is effectively used; determination of understeer or oversteer; whether the target travel line was traced from the travel position information) is stored.

In the middle section C, the task imposed on the driver (steady circle turn; driving force enough to cancel the running resistance is required; the vehicle is smoothly guided to the target point), and
Factors involved (steering wheel, accelerator, etc. as driver operations; steering angle, yaw rate, lateral G vector, longitudinal G, lateral G, accelerator opening, speed as vehicle information; road surface / tire friction coefficient as road surface, slope, cant, Course map; equation of motion)
The evaluation contents (whether the friction circle of the vehicle is used effectively; the vehicle slip angle is appropriate; the target travel line was traced from the travel position information) are stored. In escape section D, the task imposed on the driver (smooth guidance to the target point; accelerate as much as possible),
Factors involved (handle, accelerator, shift as driver operation; steering angle, acceleration G, yaw rate, drive torque, gear position, engine speed as vehicle information; road surface / tire friction coefficient as road surface, course map; equation of motion),
The evaluation content (whether the clipping point is appropriate; acceleration is appropriate; escape line is appropriate; shift up operation is appropriate) is stored.

  As evaluation logic, for example, evaluation is performed by scoring and calculating the factors related to each task stored in the memory in advance, which are imposed on the driver, with reference to the steering operation, acceleration, and other data detected from the vehicle. Can do.

  The driver can also be evaluated in combination with the following method. Here, the characteristics of circuit driving will be described. A circuit is a lap circuit, and laps are characterized by repeated running on the same course. For this reason, the running data can be overlapped under substantially the same conditions by dividing the data wrapped by one lap. And it is devised to count and evaluate the lap data for each lap.

  As circuit information, it measures and stores how the course is created based on the distance traveled from the starting point.

  A normal lap is performed for one lap (from the start point to the start point). During this time, the travel distance, the position of each corner, the turning direction, the radius, etc. are measured and stored. This recorded data is stored as a file for each circuit.

  Further, this circuit information can be provided to the user as data that has been measured in advance. The combined vector G is a combined vector obtained from the biaxial G sensor.

  In order to obtain the starting point of the lap timing, a starting point (device) for detecting a lap is set on the course (for example, an infrared projector or a magnetic device buried in the road surface).

  The lap timing is sensed by a dedicated sensor when the vehicle passes this device, and the lap timing is obtained. Measurement data This point is the starting point.

  As for the lap time, the measuring instrument side can measure the lap time of one round by obtaining this timing.

  The vehicle speed signal can obtain the following information by obtaining the vehicle speed signal from the vehicle. That is, since the travel distance after obtaining the lap timing is obtained as the travel position, it is possible to generally know which position on the course is traveling.

  For evaluation at a specific corner, it is possible to determine which corner is running by referring to the circuit information, and cornering evaluation can be performed for each corner. The speed display displays the vehicle speed in real time and provides it to the driver.

  The running data can be aggregated / evaluated by analyzing the contents of the data memory after running (after the completion of measurement). That is, the tire adhesive capacity utilization rate of one lap is analyzed. Identify each corner and analyze the tire adhesion capacity utilization rate for each corner. Aggregate the lap time list.

  The control system 21 includes a lateral acceleration (Gy) 43, a longitudinal acceleration (Gx) 45, an LPF 47, an LPF 51, an A / D conversion 49, and an A / D conversion 53.

  Further, the control system 21 includes a vehicle speed signal 55, a waveform shaping circuit 57, a circuit starting point signal 59, and a waveform shaping circuit 61.

  Please refer to FIG. A control process for registering the control system 21 in the circuit information database is shown. The control unit 23 includes a circuit information calculation unit 63.

  The circuit information calculation unit 63 calculates a curvature (direction, radius) from the composite G and speed. Identify the start and end of each corner. Specialize the starting point.

That is, from the equation of motion, centripetal acceleration = square of speed / radius
Radius = square of speed / centripetal acceleration.

From driving data,
・ Speed (m / sec)
・ The centripetal acceleration G (1G = 9.8m / sec2) is obtained, and the turning radius is obtained.

      Also, (G in the horizontal direction treats the right direction (-) as a left turn and the left direction (+) as a right turn.) The above calculation is performed for each sampling and starts from the start point and is connected at the start point. (Course map) is completed. At the beginning and end of the corner, the point at which the linear movement (lateral G is near 0) to + or-starts at the corner, and the point at which the lateral G returns to near 0 ends. It is defined as

  Further, the information is stored in the circuit information database 35, and data is transferred from the information in the nationwide circuit information database 67 by communication and stored. As a result, it is possible to comparatively examine or evaluate the travel record after superimposing the circuit layout and the trajectory on which the vehicle actually traveled. At this time, it is also effective to output the record of the acceleration of the vehicle generated in the actual driving as the electronic information together with the friction circle after the driving.

  In addition, each apparatus (or function) etc. of the driving assistance apparatus 1 comprised as mentioned above are demonstrated more concretely. The acceleration sensor is a biaxial (longitudinal acceleration, lateral acceleration) acceleration sensor fixed horizontally in the apparatus, and simultaneously detects the longitudinal acceleration G and the lateral acceleration G of the vehicle. The low-pass filter (LPF) is an analog filter for blocking the signal unnecessary area of the acceleration sensor, and a normal cutoff frequency is usually about 1-5 (Hz).

  A / D conversion uses an A / D converter built in the microcomputer, and the sampling period is several msec to several tens msec. Quantization is a 12-bit transform.

  In the calculation of the combined vector (acceleration), the combined vector is calculated from two orthogonal accelerations.

  The target G (acceleration) value can be set with a dedicated dial for the target acceleration G value of 1, and can be set in 0.05 G steps. The value is displayed on the liquid crystal display. The target setting G2 value is automatically set to a value of -0.1G from the set G1 value, but can be arbitrarily set.

  In the comparison determination, the set G1 value and the G2 value are compared and determined with the composite vector G. The notification sound A is selected when the value is greater than or equal to G1, and the notification sound B is selected when the value is greater than or equal to the G2 value and less than G1.

  As for the sound source, the notification sound A and the notification sound B have different sound sources. As for the amplifier, the sound source is amplified so that it can be driven by a speaker.

  As for the volume controller, the volume can be preset and changed in advance. off (low), Low (low), Mid (medium), and Hi (high) can be selected.

  The speaker is notified to the driver as a notification sound. The liquid crystal display displays set values, measured values, analysis results, and the like.

  As for the data memory, the following contents during traveling (during measurement) are stored in the data memory of the apparatus. That is, the composite vector G, the moving distance from the origin, the speed, the lap time, the number of laps, etc. are stored.

  The lap sensor receives a starting signal from the lap sensor. At the same time, a dedicated timer is activated to calculate the lap time. The vehicle speed signal input receives a vehicle speed signal from the vehicle and calculates a moving distance from the starting point and the vehicle speed.

  The operation of the driving support device 1 will be described with reference to FIG. First, in step S601, the vehicle starts traveling.

  In step S603, the accelerometer is activated.

  For example, it is assumed that the vehicle travels on a course SKT shown in FIG. When the vehicle approaches the corner C from the start point S, as shown in FIG. 7, the driver is aware of the maximum deceleration section A, turn-in B, intermediate area C, escape area D (see FIG. 7) as turning sections. Then run. In step S605, data such as a friction circle is read from the determination reference input unit (for example, databased) 33. Here, as shown in FIG. 8, the friction circle is a circular line (or region) in which the boundary values of the direction (front and rear, left and right) of acceleration generated in the vehicle and the magnitude are smoothly connected in each direction. Is represented in a pie chart (for example, the vertical axis represents acceleration applied to the front and rear of the vehicle, and the horizontal axis represents acceleration applied to the left and right of the vehicle). That is, the tire and the road surface of the vehicle do not slip inside this circular line (or area), but the friction between the tire and the road surface exceeds the limit at the acceleration outside the friction circle, and the vehicle slips. Is something that causes

  In addition, the friction circle broadly includes a boundary value of friction, and includes all that can be compared with the acceleration detected by the acceleration sensor and the acceleration set with the set value.

  In step S607, a comparison process between the friction circle and the acceleration detected by the acceleration sensor is executed.

  In step S609, it is determined whether or not the acceleration is within a predetermined range (friction circle range). If it is within the predetermined range, the process proceeds to step S611. If the acceleration is not within the predetermined range, the process returns to step S607.

  In step S611, notification stage division processing is performed.

  In step S613, a notification process is performed. As shown in FIG. 10, the friction circle and the acceleration generated in the vehicle are compared. As a result, the notification signal is notified at the specific portion. That is, when the value of the first area (the area between the target G2 and the target G1) includes the value of the current acceleration G (G change L1 generated in the vehicle), a notification sound or the like that calls attention is notified. . As a result, a notification sound or the like that calls attention is notified at portions H2, H3, and H5 in the drawing.

  In addition, when the value of the current acceleration G (the change L1 of G generated in the vehicle) is included in the value of the second region (when there is a high possibility of causing a slip in the region outside the target G1), a notification that prompts a warning Sounds are notified. As a result, a notification sound or the like for prompting a warning is notified at the portions H1 and H4 in the figure.

  That is, when the acceleration reaches the boundary area, the notification means notifies the driver of a different type of warning sound or warning display for each boundary. And in the case of the acceleration which protrudes outside the boundary area | region of the set friction circle, a continuous sound is alert | reported to a driver.

  Here, in the first region and the second region, it may be determined that the level of the vehicle driving technique is higher as the portion (or time) in which the notification sound is notified is larger.

  In step S615, it is determined whether the vehicle has been decelerated. When it is determined that the vehicle has been decelerated, the process proceeds to step S617. When it is determined that the vehicle is not decelerated, the process proceeds to step S619.

  In step S617, data exchange is performed. Thereby, the notification of the notification sound or the like is stopped.

  In step S619, it is determined whether or not the vehicle has finished traveling. When it is determined that the vehicle has finished traveling, the process ends. When it is determined that the vehicle has not finished running, the process returns to step S607.

  Please refer to FIG. 11 and FIG. The simulation device 63 includes a liquid crystal display device 37 that displays an image, a player bucket seat 65 on which a player is seated, a handle 67 that performs driving operation processing of a vehicle image, a shift lever 69 that performs shift conversion processing, and a vehicle image. A brake 71 that performs a brake process, an accelerator 73 that performs an accelerated running process on a vehicle image, and a game machine body 79 that is connected to these operating means and controls the entire simulation process.

  The liquid crystal display device 37 includes a screen 37 a and a speaker 75. The liquid crystal display device 37 and the game machine main body 79 are connected by a video / audio cable 77.

  That is, the liquid crystal display device 37 that displays the effect image, the display control means that performs control to display the vehicle on the liquid crystal display device in response to the operation of the operator, and the acceleration generated in the vehicle in response to the operation of the operator. An acceleration calculating means for performing control to calculate, a memory for storing a friction circle indicating a boundary region of acceleration set before the operation, a comparison means for comparing the acceleration calculated by the accelerometer with the friction circle during the operation, and the operation It has a notifying means for notifying a comparison result based on the comparison by the comparing means, and performs a simulation. The other processes are the same as the computer control process of the driving support device 1 and will not be described. That is, it is different in that a display control means for displaying computer processing in the driving support device 1 on the screen 37a of the liquid crystal display device 37 is provided.

  Please refer to FIG. On the screen 37a of the liquid crystal display device 37, images and the like are calculated and displayed by the display control means in the following display areas (according to the calculation method described in the driving support device 1 is applied for the calculation of the acceleration G and the like). .

  That is, a speed display area 79 for displaying the speed, an area 81 for displaying the best lap and the previous lap time (result display), an area 83 for displaying the evaluation for each corner, and an area for displaying the composite acceleration in real time. 83a, an area 85 that blinks, lights up, etc. in synchronization with the notification sound when the set value is exceeded, and the acceleration vector is plotted with the friction circle in real time and displayed while leaving past data for a certain period of time ( An area 87 (displayed in time series), an area 89 for displaying a tachometer, an area 91 for displaying an accelerator and a brake on a bar graph, and an area 93 for displaying a gear position.

  On the other hand, on the screen 37a of the liquid crystal display device 37, effect images of the watching stand G1, the vehicle G2, the route G3, etc. are displayed.

  In addition, this invention is not limited to the example of the embodiment mentioned above, It can implement in another aspect by adding an appropriate change.

  For example, when a driver sets the maximum value of the friction circle (risk area where slip occurs), the tire wear degree and road surface condition are converted into numerical values to determine the size of the friction coefficient between the tire and the road surface, and the limit value of the friction circle Correction means for correcting the above may be provided.

  Also, a warning signal is output in advance when the speed at which the vehicle enters the corners of the circuit course is compared with the limit acceleration (friction circle) of each corner radius stored in the memory. You may do it.

  Further, each corner of the circuit course is divided into the maximum deceleration section A, the turn-in B, the intermediate area, and the escape area D (see FIG. 7) described above when evaluating the driving technique. D) a memory storing points corresponding to the difficulty levels of a plurality of tasks corresponding to D), and a time when the acceleration detection sensor in each section (A to D) generates a caution signal (or caution sound) in the vicinity of the friction circle A calculating means for calculating the sum, a comparing means for comparing the sum of the time with a reference value, and an output means for outputting the result of the comparing means may be provided.

  In addition, the driving technique of the driver may be evaluated for each section by comparing the reference value and the time of the attention signal for each section (A to D) from the memory.

  At this time, if a warning signal that is dangerous to the driver is notified, the evaluation of the driving skill of the driver may be deducted according to the sum of the notified time.

  By providing each of these processing means in the driving support device 1 or the simulation device 63, it is possible to output the evaluation of the driving skill of the driver.

  For example, when the road surface is frozen on a general road as well as running the vehicle on a circuit, slipping can be prevented by reducing the limit acceleration in the friction circle.

  The friction circle is set so that the fuel consumed by the vehicle is optimal, and the fuel consumption is appropriately adjusted by providing the fuel consumption appropriate means that makes the fuel consumption appropriate when the notification sound is notified near the friction circle. You can also

  In addition, a game can be played by the simulation device, and driving skills can be improved.

DESCRIPTION OF SYMBOLS 1 Driving assistance device 3 Power switch 5 2 axis | shaft G sensor 7 Target G setting dial 21 Control system 23 Control part 25 Composite vector calculating part 27 Comparison calculating part 29 Notification processing part 31 Microcomputer 33 Determination reference | standard input part 35 Circuit information database 37 Liquid crystal Display 39 Notification unit 41 Running and determination data memory 43 Lateral acceleration 45 Longitudinal acceleration 47, 49 LPF
51, 53 A / D conversion 55 Vehicle speed signal 57 Waveform shaping circuit 59 Circuit origin signal 61 Waveform shaping circuit

Claims (14)

An accelerometer that detects the acceleration generated in the vehicle while traveling;
A memory for storing the boundary area of acceleration set before driving;
A comparison means for comparing the boundary region with the acceleration detected by the accelerometer during the running;
Informing means for informing the comparison result based on the comparison by the comparing means during the traveling;
A driving support device comprising: An accelerometer that detects the acceleration generated in the vehicle while traveling;
A memory for storing a friction circle indicating a boundary region of acceleration set before driving;
A comparison means for comparing the acceleration detected by the accelerometer during the running with the friction circle;
Informing means for informing the comparison result based on the comparison by the comparing means during the traveling;
A driving support device comprising:   The driving support device according to claim 2, wherein a boundary region of the friction circle includes a first boundary for notifying a caution and a second boundary for notifying a danger.   4. The driving support apparatus according to claim 3, wherein when the acceleration reaches the boundary region, the notification unit notifies the driver of a different type of warning sound or warning display for each boundary.   5. The driving support device according to claim 4, wherein a continuous sound is notified to the driver in the case of an acceleration that protrudes outside the boundary region of the set friction circle.   The driving support device according to any one of claims 2 to 5, further comprising output means for outputting, as electronic information, a record of the acceleration of the vehicle that has occurred in actual driving after the driving is completed, together with the friction circle. An accelerometer detecting acceleration generated in the vehicle during traveling;
The reading means reads from the memory the boundary area of acceleration set before running;
Comparing the acceleration detected by the accelerometer during the travel with the boundary region;
A notifying means notifying a comparison result based on the comparison by the comparing means during the traveling;
A driving support method comprising: A display device for displaying effect images;
Display control means for performing control for variably displaying the vehicle on the display device in accordance with an operation of the operator, acceleration calculation means for performing control for calculating acceleration generated in the vehicle in accordance with the operation of the operator,
A memory for storing the boundary area of acceleration set before operation;
Comparison means for comparing the acceleration calculated by the accelerometer during the operation with the boundary region; and notification means for notifying a comparison result based on the comparison by the comparison means during the operation;
A simulation apparatus comprising: A display device for displaying effect images;
Display control means for performing control for variably displaying the vehicle on the display device in accordance with an operation of the operator, acceleration calculation means for performing control for calculating acceleration generated in the vehicle in accordance with the operation of the operator,
A memory for storing a friction circle indicating a boundary region of acceleration set before operation;
Comparison means for comparing the acceleration calculated by the accelerometer during the operation with the friction circle;
Informing means for informing the comparison result based on the comparison by the comparing means during the operation;
A simulation apparatus comprising:   The simulation apparatus according to claim 9, wherein a boundary region of the friction circle includes a first boundary that notifies attention and a second boundary that notifies danger.   11. The simulation apparatus according to claim 10, wherein when the acceleration reaches the boundary area, the notification unit notifies the driver of a different type of warning sound or warning display for each boundary.   12. The simulation apparatus according to claim 11, wherein a continuous sound is notified to the driver in the case of an acceleration that protrudes outside a boundary region of the set friction circle.   13. The simulation apparatus according to claim 9, further comprising an output unit that outputs a record of an actual operation as electronic information together with the friction circle after the operation is completed. A step in which the display control means performs a control to display the image of the vehicle on the display device in response to the operation of the operator;
An acceleration calculating means performing control for calculating an acceleration generated in the vehicle in response to an operation of the operator;
A step in which the reading means reads the boundary area of the acceleration set before the operation from the memory;
Comparing the acceleration calculated by the accelerometer during the operation with the boundary region;
A notifying means notifying a comparison result based on the comparison by the comparing means during the operation;
A simulation method comprising:

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