JPH0542451Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention relates to a driving guidance and instruction device for automobiles, and in particular to a driving guidance device that instructs the steering wheel correction rotation amount so that the actual driving trajectory matches the basic driving trajectory. Relating to an indicating device.

<Prior art> Data indicating the basic driving trajectory is stored in memory in advance, and based on the actual driving trajectory and the basic driving trajectory, the amount of steering wheel correction rotation is calculated to make driving follow the basic driving trajectory. There is an automobile driving guidance system that displays the following information on an indicating device. In such a driving guidance system, a sensor that detects the traveling trajectory of the car is attached (for example, a sensor that detects the distance traveled or the car position is attached to the wheel, and a sensor that detects the rotation angle of the steering wheel is attached to the steering wheel), A skilled driver drives the car to the desired location, and in parallel with the driving, the distance traveled or the steering wheel rotation angle corresponding to the position of the car is sampled and stored in memory as a basic driving trajectory. . Then, when driving an amateur, the steering wheel rotation angle Θ _H corresponding to the current mileage or the position of the car is read out from the memory, the steering wheel rotation angle Θ _H is compared with the actual steering wheel rotation angle Θ _A , and the comparison result is displayed inside the vehicle. The information is transmitted to the driver via an instruction device installed in the vehicle, and the driver corrects the rotation of the steering wheel, thereby approximating the actual travel trajectory to the basic travel trajectory.

The driving instructions given to the driver include the rotation angle and direction of the steering wheel, the amount of accelerator, the timing of braking, the timing of shifting the shift lever, etc., and the driving trajectory information includes the distance traveled by the car or the rotation of the steering wheel relative to the position of the car. Although there are angles, moving speeds, etc., in the following description, it is assumed that the amount of driving instructions given to the driver is the amount of steering wheel rotation, and the steering wheel rotation angle corresponding to the amount of rotation of the wheels (traveling distance) is stored in the memory as the traveling trajectory.

Now, as a device for indicating the amount of rotation of the steering wheel, the seventh
There are horizontal types and semicircular types as shown in the figure or FIG. 8. In these indicating devices, all scale elements (referred to as indicators) for the rotation angle are constructed using LEDs, liquid crystals, or cathode ray tubes, and the number of scale elements that light up is changed depending on the amount of rotation of the handle, or the brightness (or The number of scale elements whose color changes is changed to visually identify and display the amount of handle rotation. In addition, Figures 7 and 8 are examples using LEDs. In Figure 7, the center scale of the bar-shaped index pattern is zero for the amount of rotation of the steering wheel, and the amount of rotation of the right steering wheel is indicated at equal intervals in the right direction.
The amount of rotation of the left steering wheel is scaled at equal intervals in the left direction (numerical values indicate rotation, and 1 means one rotation), and in Figure 8, the center of the semicircular index pattern indicates the amount of rotation of the left steering wheel. The scale is set at the zero position, and the amount of rotation of the right handle is graduated at equal intervals clockwise, and the amount of rotation of the left handle is graduated counterclockwise.

<Problems to be solved by the invention> Now, when these indicating devices are used as driving guidance indicating devices for the automobile, the indicating devices should be placed in a place where the driver can see them and where they will not interfere with normal driving, for example. It must be installed in a limited space diagonally in front of the driver. For this reason, the dimensions of the indicating device (the dimensions of the index pattern) cannot be increased, making it difficult to see the indication of the amount of rotation of the handle.

In particular, in order to accurately transmit the amount of steering wheel rotation to the driver, the number of scale elements (number of LEDs) must be increased, but the indicating devices shown in Figures 7 and 8 require many LEDs and are expensive. At the same time, the display area of a single LED has become smaller due to the miniaturization of the above-mentioned indicating devices.
The arrangement of LEDs makes it difficult to instantly recognize the amount of steering wheel rotation from a distance. In addition, if you want to express it with an accuracy of 10 degrees and the maximum amount of rotation of the handle in one direction is 1.5 turns (540 degrees), 54 x 2 = 108 LEDs will be required on each side.

By the way, even though the basic running trajectory shows the rotation angle when the steering wheel is turned all the way to the right at a given running distance (for example, 1.5 turns is 540°),
When the driver turns the steering wheel all the way to the left, the driving guidance device instructs the amount of rotation (3 rotations = 1080°) of the steering wheel from lock-to-lock (from maximum left rotation position to maximum right rotation position). You must do so. However, if an attempt is made to display such a large amount of rotation using the indicating device shown in FIG. 7 or 8, the above-mentioned drawbacks will become more apparent.

Therefore, as shown in Fig. 9a, we provided an index pattern IPB indicating the amount of steering wheel rotation based on the basic running trajectory and an indicator pattern IPA indicating the amount of steering wheel rotation based on the actual running trajectory, and as shown in Fig. 9b. One idea is to have the driver operate the steering wheel so that the amount of rotation indicated by both index patterns IPB and IPA (the number of LEDs lit in the white area) matches. According to this indicating device, it is easy to identify when the device is large, but when it is miniaturized as mentioned above, it is difficult for an unaccustomed driver to instantly identify the amount of steering wheel correction rotation from a distant seat. Moreover, it requires many LEDs.

In light of the above, an object of the present invention is to provide a driving guidance and instruction device for an automobile that can reduce the number of scale elements (number of indicators), is easy to see even though it is small, and can easily recognize the steering wheel correction rotation amount and direction. be.

<Means for Solving the Problems> FIG. 1 is a front view of a driving guidance and instruction device according to the present invention.

HRD is a driving guidance instruction device, SPI is a scale indicator pattern, SI ₀ is an indicator indicating zero correction rotation amount, SR ₁
~SR ₁₀ is an index that indicates the amount of corrected rotation of the steering wheel to the right,
SL ₁ to _{SL 10} are indicators indicating the amount of leftward correction rotation of the steering wheel.

<Function> The scale part of the driving guidance instruction device HRD that displays the amount of steering wheel correction rotation is composed of a symmetrical optical index pattern SPI in a substantially circular shape with a portion of the lower part missing, and an index in the upper center of the index pattern SPI
Set SI ₀ as the zero position of the steering wheel correction rotation amount, and
The amount of corrected rotation of the steering wheel to the right is scaled non-linearly with indicators SR ₁ to SR ₁₀ clockwise from the zero position, and the amount of left correction rotation of the steering wheel is graduated counterclockwise from the zero position with indicators SL ₁ to
SL ₁₀ also scales nonlinearly. That is, when the amount of correction rotation of the handle is small, the amount of change in the scale is increased, and when the amount of rotation of the handle is large, the amount of change in the scale is made small, so that the scale is graduated non-linearly.

<Example> Fig. 2 is a block diagram of an automobile driving guidance system, in which 11 is a processor that performs processing for driving guidance instructions and other processing, 12 is () basic travel trajectory, () corrected rotation amount and lighting. Non-volatile memory (for example, battery backup RAM) that stores correspondence tables showing the relationships between the relevant indicators, etc.
13 is an operation panel equipped with a switch for registering a basic travel trajectory and a guidance driving start switch for driving according to the basic travel trajectory; 14;
1 is a steering wheel sensor attached to the steering wheel column to detect the rotation angle of the steering wheel; 15 is a wheel sensor that detects the rotation of the wheels; and 16 is a display driver that drives the driving guidance indicating device HRD that displays the corrected rotation amount of the steering wheel. .

The driving guidance instruction device HRD is as shown in Figure 1.
A symmetrical optical index pattern SPI with a roughly circular scale with a portion missing at the bottom, a display section FWD and REV that indicates whether the vehicle is moving forward or backward, and a display section that indicates the end of memory data that indicates the basic driving trajectory. Has an END.

Each index of the index pattern SPI SI ₀ , SR ₁ ~ _{SR 10} ,
SL ₁ to SL ₁₀ are each formed of an LED (light emitting diode), and only the index SI ₀ at the upper center is circular, and the other indexes are rectangular.
Indicator SI ₀ is green, indicators SR ₁ to SR ₆ and SL ₁ to _{SL 6}
is yellow, and the indicators SR ₇ to SR ₁₀ and SL ₇ to SL ₁₀ are displayed in red. In addition, the index SI ₀ indicates the zero position of the steering wheel correction rotation amount, and the indices SR ₁ to _{SR 10} arranged at equal intervals clockwise from the index SI ₀ nonlinearly indicate the right correction rotation amount of the steering wheel. The steering wheel correction rotation amount to the left is similarly nonlinearly indicated by indicators SL ₁ to _{SL 10} arranged at equal intervals counterclockwise from SI ₀ . In other words, when the amount of correction rotation of the steering wheel is small, the change in the scale of each index (handle correction amount) is small, and when the amount of steering wheel rotation is large, the change in the scale of each index is large. There is.

Figure 3 is a diagram to explain the nonlinear scale.
FIG. 4 is a diagram showing the correspondence between index numbers and corrected rotation amounts, where index SI ₀ is designated as No. 0, and indexes SR ₁ to SR ₁₀ are designated as No. 1 to No. 1.
10, indicators SL ₁ to SL ₁₀ are shown as No. 1′ to No. 10′. If the handle correction rotation amount is y and the index number is x, the correction rotation amount according to the following equation y=x ^1.8 is indicated by each index. That is, index No. 0 instructs a correction rotation amount of 0 to ±0.03 rotations (+ sign indicates clockwise rotation, - sign indicates counterclockwise rotation), index No. 1 instructs a correction rotation amount of 0.03 to 0.14 rotations, Corrected rotation amount −0.03 to − by index No. 1′
0.14 is indicated, and the corrected rotation amount is 0.14 by index No. 2 and No. 2′ respectively.
~0.29, -0.14 to -0.29 are specified, and similarly, the corrected rotation amount is 2.5 with index No. 10 and No. 10', respectively.
~, -2.5~ are instructed, and the correspondence between these corrected rotation amounts and the indicators to be lit is stored in advance in the non-volatile memory 12.
is stored in

The overall operation of FIGS. 1 and 2 will be explained below.

The basic travel trajectory registration switch 13a (FIG. 2) is operated to set the registration mode, and a skilled driver drives the vehicle to position it at a desired location (for example, a garage). In parallel with this driving, the wheel rotation signal generated from the wheel sensor 15 is counted to determine the travel distance, and the steering wheel rotation angle is determined using the signal from the handle sensor 14 every predetermined travel distance. mileage/
Stores the steering wheel rotation angle table (basic travel trajectory).

While the basic travel trajectory is memorized,
The driver operates the guidance driving start switch 13b to activate the guidance driving to start driving the vehicle to a predetermined location.

When the wheel rotates and travels a predetermined distance during driving, the processor 11 detects the actual steering wheel rotation angle Θ _A and reads from the non-volatile memory 12 the steering wheel rotation angle Θ _H on the basic travel trajectory corresponding to the traveling distance. The handle rotation angle Θ _H and the actual handle rotation angle Θ _A are compared to determine the corrected rotation amount Θ (=Θ _H −Θ _A ). Next, the processor 11 obtains an index corresponding to the corrected rotation amount Θ from the corrected rotation amount/index table stored in the nonvolatile memory 12, and lights up the obtained index (all indicators from 0 to Θ ).

As a result, the driver rotates the handle by an amount corresponding to the instructed correction rotation amount so that the correction rotation amount becomes zero, and thereafter repeats the same operation to approximate the actual driving trajectory to the basic driving trajectory. Move the car to the desired location.

In addition, although the case where the indicator pattern is configured in a substantially circular shape has been described above, it may be formed into a substantially elliptical shape as shown in FIG. 5, a substantially rectangular shape as shown in FIG. 6, or any other suitable shape. The key point is to form a symmetrical closed loop with a missing part at the bottom, and arrange the correction rotation amount zero indicator at the upper center and the other indicators to form a non-linear scale. Bye.

Also, the index indicating the corrected rotation amount of one rotation is from the zero index.
It is preferable to place it near 90 degrees (directly to the side).

<Effects of the invention> According to the invention described above, the driving guidance instruction device is configured with a loop-shaped optical index pattern that is bilaterally symmetrical with a portion of the lower part missing, and the upper central part of the index pattern is set at the zero steering wheel correction rotation amount position. In addition, since the scale is configured to indicate the amount of corrected rotation of the handle to the right on the right side of the zero position and the amount of corrected left rotation of the handle on the left side of the zero position, it is easy to visually determine the amount and direction of corrected rotation of the handle. Can be recognized accurately.

Furthermore, according to the present invention, when the amount of steering wheel correction rotation is small, the amount of change in the scale per index is made small, and when the amount of steering wheel correction rotation is large, the amount of change in the scale per one index is made large. Since it is configured to display up to the maximum corrected rotation amount, the number of indicator elements can be reduced and the size can be reduced, and even if it is small, it is easy to see, and furthermore, the corrected rotation amount can be indicated with high precision.

In addition, since it is a non-linear scale, the handle can be rotated according to the correction amount instructions, such as turning the handle at high speed at first when the correction rotation amount is large, and turning at low speed when it becomes small, making it easier to drive by guidance. I can do it.

In addition, by setting the index position where the compensation rotation amount is approximately one rotation to be close to exactly horizontal, the compensation rotation amount and direction can be easily identified visually.Furthermore, when correction of one rotation or more is required, the circular index pattern can be rotated. This makes it easier to recognize that one or more rotations of correction is required and the direction, and color-coding makes it even easier to recognize.

[Brief explanation of drawings]

FIG. 1 is a front view of the driving guidance instruction device according to the present invention, FIG. 2 is a block diagram of a driving guidance system to which the instruction device of the present invention can be applied, FIGS. 3 and 4 are explanatory diagrams of the nonlinear scale, and FIG. 5 and 6 are pattern diagrams showing other shapes of the index pattern, and FIGS. 7 to 9 are explanatory diagrams of conventional examples. HRD...Driving guidance instruction device, SPI...Scale index pattern, SI ₀ ...Indicator indicating zero correction rotation amount,
SR ₁ ~ SR ₁₀ ... Indicator indicating the right correction rotation amount, SL ₁ ~
SL ₁₀ ...Indicator indicating the amount of left correction rotation.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Data indicating a basic driving trajectory is stored in memory, and driving is performed following the basic driving trajectory based on the actual driving trajectory and the basic driving trajectory. In an automobile driving guidance instruction device that displays the amount of rotation of the steering wheel for steering the steering wheel, the indicating device is configured with a loop-shaped optical indicator pattern that is bilaterally symmetrical with a portion of the lower portion missing, and the upper center portion of the indicator pattern is connected to the steering wheel. At the same time as the correction rotation amount zero position, the right correction rotation amount of the steering wheel is graduated clockwise from the zero position, and the left correction rotation amount of the steering wheel is graduated counterclockwise from the zero position, and the steering wheel right and left rotation amount scales are non-linear. An automobile driving guidance and instruction device characterized by displaying the maximum rotation amount as a scale. (2) Scope of the utility model registration claim characterized in that the scale is scaled so that when the amount of rotation of the handle is small, the amount of change in the scale is small, and when the amount of rotation of the handle is large, the amount of change in the scale is increased. The automobile driving guidance instruction device according to item 1.