JPH03153432A - Rearview mirror - Google Patents

Abstract

PURPOSE:To improve the safety and comfortableness of a car by providing a rearview mirror with a detecting means for the position of driver's eyes, and automatically controlling the angle of a side back mirror according to a detecting signal issued from the above means to always obtain a good back visual field. CONSTITUTION:A rearview mirror 1, which is inside a car and has a small mark 5 attached on a mirror face, can move round horizontal and vertical axes, and angle detectors 18, 19 are provided around the above axes, and their output signals are inputted into a computing means 25. A small mark 4 is provided on a central upper end part of a rear window glass 30 behind the rearview mirror 1, and the angle of the back mirror 1 is adjusted so that the mark 4 may be positioned at the middle between marks 5 seen deviatingly left and right when a driver carefully watches the mark 4 through the back mirror 1 in this driving posture, and the positions of the driver's eyes are detected on each then output of the angle detectors 18, 19. Thus the angle adjustment of the side back mirrors 20, 50 is automatically performed by utilizing the result of the above detection.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device that automatically adjusts a plurality of mirrors installed in a vehicle or the like to an angle that provides good rearward visibility.

(Prior Art) Vehicles such as automobiles have mirrors called fender mirrors or door mirrors on either side or one side of the outer side of the vehicle.In this text, mirrors on the side of the vehicle are referred to as side mirrors. I'll call you. In addition, there is a copy mirror called a room mirror in the driver's cabin.In this text, this copy mirror in the driver's cabin will be referred to as the interior copy mirror. Conventionally, the driver had to adjust these mirrors one by one while visually checking the mirror image in order to obtain good rearward visibility.

(Problems to be Solved by the Invention) The present invention has been made in order to eliminate the time required to adjust each copying mirror one by one, and as a result, the vehicle can be made simpler and safer. Furthermore, in the past, it was ideal to adjust these mirrors in a wet place where the rear of the vehicle could be clearly seen, but according to the present invention, the mirrors can be adjusted in any location.8 For example, in a garage. Among other things, the mirror can be adjusted in advance, so you can immediately get a safe rear view from the moment you start driving.

(Means for Solving the Problems) In order to achieve the above-mentioned object [1], in the present invention, the mirror is linked in accordance with the position of the driver's eyes so that the driver can obtain good rearward visibility. .

The angle of the mirror that provides the driver with good rearward visibility is determined by the position of the driver's eyes.

Since drivers adjust their quick-drying postures according to their own body shapes and preferences, the position of their eyes differs depending on the driver.Therefore, a means for detecting the positions of the driver's eyes is required.

If the copying mirror is operated in accordance with this detected value, good rearward visibility can be automatically obtained. (Claim 1) One of the replica mirrors can be used as means for detecting the position of the driver's eyes.

(Claim 2) When the driver adjusts one of the replica mirrors to an angle that provides good visibility, the angle reflects the position of the driver's eyes. Therefore, the position of the driver's eyes can be detected from the angle of the mirror.

Among the mirrors, the indoor mirror is the one that is easiest for the driver to adjust, so it is highly practical to use this as a means for detecting the position of the eyes (Claim 3). Therefore, first of all, claim 3 will be explained in detail.

The angle of the interior mirror that provides good rearward visibility is determined by the position of the driver's eyes. Conversely, when the driver adjusts the angle of the interior mirror so as to obtain good rear visibility, the angle corresponds to the position of the driver's eyes.

However, since there are individual differences in the adjustment of the replica mirror among drivers, and some drivers do not adjust the replica mirror very carefully, in order to take more accurate measures, in claim 4,
I set a mark above the indoor copying mirror and a target behind the indoor copying mirror. Regarding the correspondence between the angle of the interior mirror and the position of the driver's eyes, that is, the reason why the position of the driver's eyes can be determined from the angle of the interior mirror, it will be easier to understand if we first explain claim 4. Claim 3 will be explained.

In claim 4, a small mark (
1 (Fig. 1, 5), the indoor copying mirror can be moved around the horizontal and vertical axes to adjust its angle, and an angle detector 18.
19 is attached, the output of the angle detector is connected to calculation means 25, and behind the indoor mirror there is a target 4 fixed to the vehicle. The small mark on the indoor mirror and the target fixed on the vehicle behind the indoor mirror are of a size, shape, and position that do not obstruct the view.0 For example:
In the case of a normal passenger car, the small mark on the interior mirror has the shape shown in Figure 2 (c) 5, and is 7 mm long and 15 m wide.
The target, which is located at the upper center of the surface of the indoor copying mirror and is fixed to the vehicle, has a shape as shown in Figure 2 (b) 4, and the circle in the center has a diameter of approximately 8 cm. It is drawn at the upper center of the rear window glass 30.

When a driver sits in the driver's seat in a driving position and looks at a target behind him through the interior mirror, he is actually looking at a virtual image of the target created by the interior mirror.
Since this virtual image is located further away than the indoor copying mirror, when the driver's eyes focus on this virtual image, the mark on the indoor copying mirror shifts in the horizontal direction due to binocular parallax and appears as two left and right sides.

The position of the driver's eyes can be determined from the water 91@ and the angle around the vertical axis when the angle of the indoor copying mirror is adjusted so that the target is captured in the center of the marks that appear to be shifted left and right.

Therefore, by inputting the outputs from these angle detectors into a calculator and having it perform calculations, the driver's eye positions can be automatically detected simply by adjusting the mirror in the room.

By appropriately selecting the target position, it is possible to ensure that the best rearward visibility is obtained when the indoor copying mirror is adjusted in this manner. This principle will be explained in detail later.

Furthermore, even if there were no markings on the indoor mirror or a target behind it, the indoor mirror would still be adjusted as described above, as long as the indoor mirror provided good rear visibility. It is thought that it is approximately at an angle. Therefore, as claimed in claim 3, even if there is no mark on the indoor close-up mirror or a target behind it.

Although the accuracy will be lower! The position of the person's eyes can be detected. The reason for this will be explained in detail in the next section.

Based on the position of the driver's eyes detected as described above, the side mirror is linked to an angle that provides good rear visibility. Good visibility not only means meeting various safety standards, but also having as few blind spots as possible. l
! Ideally, it would be easy to grasp the relative positional relationship between the moving vehicle and other vehicles, it would be possible to see a harmonious view from the distance to the close up, and the field of view between the interior mirror and the side mirror would be well-coordinated. It is a factor.

By satisfying these conditions, the surrounding traffic situation can be appropriately judged and a natural and easy-to-see field of view can be obtained.

The angle of the side mirror that satisfies these conditions varies depending on the shape of the vehicle, but in an experimental example for a general passenger car, both the left and right side mirrors are set at about the inner quarter of the tQ plane. The ideal situation is one where your car body is reflected in the mirror and the road surface up to 50 meters away is reflected in the lower half of the mirror surface.

An object of the present invention is to control the replica mirror to such an ideal angle according to the position of the driver's eyes. In claims 3 and below, since the position of the driver's eyes is detected based on the angle of the interior mirror, J! I! The user only needs to adjust the indoor mirror, and the left and right side mirrors will be automatically adjusted to the ideal angle.

In FIG. 1, the control means 25 detects the position of the driver's eyes, generates a control signal so that the side view mirror is at an appropriate angle, and sends the side view mirror through a control signal bundle 51, 52. 2
Controls the mirror drive source such as an electric motor built into the 0.50.

(Operation) First, the principle of detecting the position of the driver's eyes will be explained.

As shown in FIG. 2(e), the indoor copying mirror has a small mark 5 toward the center E, and the horizontal axis (FIG. 2(C) 2) and vertical axis ( Figure 2 (C) 3) can be moved around.

The position of this center point relative to the car body does not change even if the angle of the indoor copying mirror is changed, so this center point is set to the origin of the coordinates on the car body (
The position of the driver's eyes will be measured as a reference point.

A straight line drawn horizontally straight backwards from this origin is the Y-axis, and a straight line drawn vertically downward from the origin is the X-axis. Further, a straight line passing through the origin and perpendicular to both wheels of Y22, that is, a straight line drawn from the origin to the right horizontally, is defined as the X-axis. In other words, the horizontal axis of the mirror becomes the X-axis, and the vertical axis becomes the X-axis. In the three-dimensional coordinate system formed in this way, the position of the center of the driver's eyes (2214 ty) coordinates (x, y, z)
seek.

To keep the explanation straight, it is assumed that the center of the rear target is on the Y axis. FIG. 3 is a view of the vehicle viewed from above, that is, a view projected onto the XY plane. When the driver 6 looks at the target 4 behind him through the interior mirror 1, he is actually looking at the virtual image 7 of one target behind him by the interior mirror 1. Since the driver focuses both eyes on this virtual image, a focal plane 8 is formed at the position of the virtual image. When the driver's left eye is fixating on the center of the virtual image, the mark 5 on the indoor mirror will appear at position 11 on the focal plane 8, so the driver's left eye 9 will see the target behind and the indoor mirror. The mark looks like the one shown in Figure 4(a).

Similarly, the driver's right eye sees something like FIG. 4(b). Therefore, when viewed with both eyes, it looks like Figure 4 (C), and the indoor mirror is adjusted so that the target behind can be seen in the center of the two marks on the indoor mirror that are shifted left and right. Figure 4 (C) shows the state in which this is done. In Figure 3, the law &! set from the origin 5 is shown. 13 (line perpendicular to the mirror surface) and the Y axis is projected onto the XY plane as P
shall be. Back eyes! ! Since the center of #4 is on the Y axis,
P is the angle of incidence on the mirror surface. In the case shown in FIG. 4(C), the reflected light from the center of the rear target 4 passes through the center 14 of both eyes. Since the angle of incidence and the angle of reflection are equal, the angle 15
is 2P.

Even if the driver changes the height of the driver's seat, the front/rear position, the angle of the backrest, etc.
), it is thought that the center of the driver's eyes are in the center of the driver's seat. The distance between the center of the driver's seat and the center of the 11 cars is determined by the vehicle, so let this be k.

x = k, (1) The Y coordinate of the center 14 of the driver's eyes is y = k/jan (2F) --- (2
).

Similarly, FIG. 2 is an optical path diagram projected onto the YZ plane,
If the angle formed by the normal line from the origin and the Z-axis is projected onto the YZ plane is Q, then the angle 32 is 2Q since the angle of incidence and the angle of reflection are equal. Therefore, z = yXtan(2Q) −, , (3
) Substituting equation (2) into equation (3), = kXtan(2Q)/jan(2F) (4) The coordinate X is determined by equations (1), (2), and (4).

y and z are found.

As mentioned above, is a value determined by the vehicle, and P, Q
Since this can be determined by the angle detectors 18 and 19, the coordinates of the center position of the driver's eyes can be determined.

In reality, the center positions of both eyes are slightly shifted when the driver faces forward and when looking at the indoor copy mirror, but this shift is small, so the distance δ calculated as described in 1. The eye position is .

If the driver has vision in only one eye, there will be no binocular parallax, so the image will not look like Figure 4 (C), but in that case, an indoor reproduction should be made so that it looks like Figure 4 (Cl). By adjusting the angle of the mirror, the position of the sighted eye can be measured.

Mark 5 (which serves as the origin of coordinates) is located at the top center of the indoor mirror surface, and target 4 is located at the top center of the rear window glass surface, so the By adjusting the rear window to the left, right, top, and bottom, you can obtain a good rear view that is evenly reflected in the interior mirror without being biased left, right, up, or down. In other words, the operation of adjusting the angle of the interior mirror to measure the position of the driver's eyes is the same as the operation of adjusting the angle of the interior mirror to obtain good rearward visibility, which is essential for the driver's safety. 9 or above, which also serves as an operation, to simplify the explanation,
It is assumed that mark 5 is located at the intersection of horizontal axis 2 and vertical axis 3, but in reality, even if it deviates slightly from that point, it will not result in a large detection error.By shifting the position of mark 5, the position of the rear target will also change. If you shift it, you can still get good rear visibility when adjusting as shown in Figure 4 (C) or (d).0For example, when mark 5 is placed in the middle left on the rear mirror surface, , and a line drawn straight backwards from there. In other words, the rear target 4 will move to the left as much as the mark 5 moves to the left.

The reason why the position of the driver's eyes can be measured even with the configuration of claim 3 will be explained.

As mentioned above, the fact that good rearward visibility can be obtained when adjusting the indoor copying mirror as shown in Figures 4(c) and (d) means that, conversely, when good rearward visibility is obtained, This means that the angle of the copying mirror is adjusted as shown in Fig. 4(C)(d). Therefore, even with the structure of claim 3 which does not require the mark 5 or the rear target 4, the principle and schedule of claim 2 can be achieved by adjusting the indoor copying mirror so as to obtain a good rear visibility. However, good rear visibility
In other words, the definition of a state in which the rear window is uniformly reflected in the indoor mirror without being biased horizontally, vertically, or vertically is quite ambiguous, and since there are individual differences in the adjustment of the mirror, detection errors will increase. However, since there is no mark 5 or rear target 4, the driver's eye position can be detected by naturally adjusting the interior mirror as usual without being aware of them, which is a feature of the system according to claim 3.

In a fifth aspect of the present invention, as shown in FIG. 7, an intermediate target 45 is placed between the indoor copying mirror l and the rear target 4 instead of the mark 5 in the second claim. In this example, rear target 4
is set at the rear of the vehicle, and an intermediate target 45 is set behind the driver's seat. The virtual image of the intermediate target 45 reflected in the indoor mirror is closer to the driver than the virtual image of the rear target 4. Therefore, when the driver gazes at the virtual image of the target behind him, his left eye sees it as shown in FIG. 4(a), and his right eye sees it as shown in FIG. 4(b). It is considered that 11 is a virtual image of the intermediate target visible to the left eye, and 12 is a virtual image of the intermediate target visible to the right eye. For the same reason as stated in the explanation of claim 2, claim 3 also includes the following: when the angle of the indoor mirror is adjusted as shown in FIG. The position of the driver's eyes can be determined from the surrounding angle. The example shown in FIG. 7 is suitable for a vehicle where the rear window is folded down, such as an oven car.

The control means 25 controls the copying mirror so as to have an optimal angle according to the measured position of the driver's eyes based on the principle described above. The mirror surface of the copying mirror can be slightly rotated around the horizontal axis (J:, direction, downward direction) and around the vertical axis (rightward, leftward) by an electric motor, etc., and by controlling the operation of the electric motor. Adjust the mirror angle.

(Example) Examples are shown in FIGS. 6 and 7.

FIG. 6 is a diagram showing the configuration of the right side mirror, as seen from the back side of the mirror surface.

An angle detector 90 around the vertical axis (left and right direction) of the mirror surface 600 and an angle detector 91 around the horizontal axis (up and down direction) of the mirror surface 600 are installed in a conventional electric side mirror (referred to as an electric mirror, a remote control mirror, etc.). is added. Since the left side mirror has a symmetrical configuration, only the operation of the right side mirror will be described. The base 601 to which the mirror surface 600 is attached is a pole join) 602
603 and can rotate around point 603. By driving the DC motor 76, the mirror surface is rotated around a vertical axis, and the angle thereof is detected by an angle detector 90. The rotation of the DC motor 76 is controlled by the reduction gear 604.60.
5 and the propelling screw 606 to move one end 612 on the horizontal axis 607 of the base back and forth, so that the mirror surface swings around the vertical axis 608 (in the left-right direction). The arm 609 attached to the shaft of the angle detector 90 is lightly pressed against one end 613 on the horizontal axis of the back surface of the base 601 by the repulsive force of the spring 610, so the shaft 611 of the angle detector 90 is aligned with the vertical axis of the base. Rotates in response to rotational movement only.

A variable resistor called a potentiometer is used as the angle detector. The moving element 615 is moved by the rotation of the shaft 611.
moves over the resistor 614 and converts the change in angle into a change in resistance value. This resistance value is signal line 615.617.618
It is extracted by

(See FIG. 7) Similarly, by driving the DC motor 77, the mirror surface rotates around the horizontal axis, and the angle is detected by the angle detector 91.

By adding an angle detector to the conventional electric side mirror, it is possible to detect the angles of the mirror surface around two orthogonal axes (vertical axis and horizontal axis).

FIG. 7 shows an example of a circuit for controlling such a side mirror according to the angle of the indoor mirror.

The angle detecting means 75 of the indoor mirror includes an angle detecting means 19 about the vertical axis and an angle detecting means 18 about the horizontal axis of the indoor mirror shown in FIG. 2(c). The input from the angle detection means 75 of the indoor mirror is processed by the arithmetic and control means 95, and then sent to the right side mirror drive means 61. The left side rearview mirror driving means 60 is automatically controlled to adjust the angle of the mirror surface. However, in order to be able to adjust the mirror using the remote control panel 700 even if the automatic control system fails, the control system is switched to the remote control panel side when the remote control panel is operated.

This switching is performed by a self-holding relay 74, which maintains the previous state even if the power is turned off and then turned on again.

Each of the rotation angle detectors 18 and 19 uses a rotary variable resistor called a potentiometer, and generates a resistance proportional to the rotation angle. If the angle detectors are installed so that the resistance of each angle detector becomes 0 when the normal line of the indoor mirror matches the Y axis, and the wires are connected as shown in the figure, P
, a voltage proportional to Q is obtained.

These angle signal voltages are respectively converted into binary numbers by AD converters (analog-digital converters) 65 and 66. The angle signal voltage of the side copying mirror is similarly obtained by potentiometers 90.91.92.93. Potentiometer 90 detects the angle around the vertical axis of the right mirror, potentiometer 91 detects the angle around the horizontal axis of the right mirror, potentiometer 93 detects the angle around the vertical axis of the left mirror. Reference numeral 92 is used to detect the angle of the horizontal sleeve length of the left mirror. These four angle signal voltages are sequentially switched by the analog switch 2 and input to the AD converter 64. The switching signal of the analog switch 62 is a 2-bit binary number counter 6.
3. AD converter 65.66.64
Angle information converted into a binary value by 102.103.10
4 and the output 101 of the counter 63 are input to the address of a ROM (read-only memory element) 67.

The ROM is a numerical value 102. corresponding to the position of the driver's eyes.
103 and the angle of the side mirror hti 104
A drive control signal for the side mirror is output in response to an address input determined by.

FIG. 8 shows bit assignments of ROM addresses and bit assignments of stored contents.

Output signal meter 1 of each 6 bits from these AD converters
A 2-bit output signal is input to the address of a ROM (read-only memory, read-only storage element) 67. FIG. 8(a) shows the bit assignment for the address, and the second-most two bits 101 indicate from which potentiometer the signal is taken from among the four potentiometers 90.91°92.93. The next 4 bits 102 convert the signal from the potentiometer 19 into A
D-converted value, the next 4 bits) 103 is the AD converted value of the signal from the potentiometer 18, and the next 4 bits 104 are the AD signal from the potentiometer indicated by the most significant two bits 101. This is the converted value.

Each of the sets of address bits 101, 102, 103, and 104 assigned meanings for each signal source as described above is called a partial address.

FIG. 8(b) shows the stored contents of the ROM 67. The most significant bit 801 is a control signal for the counter 63; the counter operates when it is 1 and stops when it is 0.

The next 8 bits 807 instruct the motors 76, 77, 78, and 79 to move the angle of the side mirror, and are inputted to the motor drive circuit 796 via the synchronization register 68. This 8-bit 807 takes the values described in (a) to (h) below and instructs the operation of the motor.

(a) When olooooio, the power transistor 72
Since the power transistor 2.727 becomes conductive and the other power transistors become non-conductive, the motor 76 rotates to move the right mirror to the right.

(b) When ioooooool, the power transistor 72
Since the power transistor 1,728 becomes conductive and the other power transistors become non-conductive, the motor 76 rotates to move the right mirror to the left.

(c) When oioooiooo, the power transistor 72
Since the power transistor 2.725 becomes conductive and the other power transistors become non-conductive, the motor 77 rotates to move the right mirror upward.

(d) When 1.0000100, power transistor 7
Since the power transistors 21 and 726 become conductive and the other power transistors become non-conductive, the motor 77 rotates to move the right mirror downward.

(E) When oooioioio, the power transistor 72
Since the power transistor 4.727 becomes conductive and the other power transistors become non-conductive, the motor 79 rotates to move the left mirror to the right.

(to) When 00100001, power transistor 72
3.728 becomes conductive and the other power transistors become non-conductive, so the motor 79 rotates to move the left mirror to the left.

(g) When the value is 00011000, the power transistor 72
Since the power transistor 4,725 becomes conductive and the other power transistors become non-conductive, the motor 78 rotates to move the left mirror upward.

(H) When 00100100, power transistor 72
3.726 becomes conductive and the other power transistors become non-conductive, so the motor 78 rotates to move the left mirror downward.

This 8-bit 807 does not take values other than (a) to (h).

806 is the intermittent (switching) frequency of the motor drive current, and takes a value of OOO or up to 111. Duty ratio according to this value (state l during one cycle of a rectangular wave pulse that periodically repeats state 1.0)
The pulse generator 6 generates a pulse 691 of
9. When 000, duty is -0%
, 111, the duty is -100% pulse signal 6
91 is generated. This pulse signal 691 is input to a motor drive circuit 796 to intermittent the motor drive current according to the duty ratio. That is, when the pulse signal 691 is O, all power transistors are non-conductive and the remote drive current is cut off. When the pulse signal 691 is 1, a drive current can flow to the motor in accordance with the signal from the synchronization register 68.

The logic gate in the motor drive circuit is used to intermittent the motor drive current as described above, and the power transistor of the combinatorial bear (a set of P-channel and N-channel transistors whose collectors are connected) is simultaneously turned on. It is designed to prevent this from happening. The gate drive circuits 70 and 71 convert the logic signal level to the base drive signal level, and also serve as a time constant circuit to prevent the transistors of the fundamental pair from becoming conductive at the same time even if there is an abnormality in the power supply.

A self-holding relay 74 switches the motor drive current between the output current of the power transistor and the current from the remote control panel. When the switch 811 is pressed, current flows through the relay winding 741 and the relay contact becomes the power transistor side, so the side view mirror is under the control of the automatic control system, and the flip-flop 730 is set and a lamp is turned on to indicate that it is in the automatic control state. 812 lights up. Remote control panel 700
When any of the four buttons 751, 752, 753, 754 is pressed, current flows to the relay @d1742,
The relay contacts are on the remote control panel side, making it possible to adjust the side view mirror using the remote control panel as in the past. At the same time, flip-flop 730 is reset, all power transistors are rendered non-conductive, and lamp 812 is turned off.

Reference numeral 731 is a power supply voltage monitoring element, which outputs an "frL pressure level signal 73" when detecting a voltage abnormality in the logic circuit power supply or when detecting transient voltage fluctuations when the power is turned on and off.
By setting 2 to O, the frisible flop 730 is reset and all the Bowert transistors are rendered non-conductive, thereby preventing abnormal movement of the copying mirror.

Hereinafter, the functions of each part of the circuit shown in FIG. 7 will be explained.Next, the operation of this circuit as a whole will be explained. - The side view mirror is adjusted in four steps according to the instructions from the binary number counter 63, that is, the binary number counter 63 is OO
When , adjust the angle around the vertical axis (horizontal direction) of the right mirror; when 01, adjust the angle around the horizontal axis (up and down) of the right mirror; when 10, adjust the angle around the vertical axis of the left mirror. Adjustment: When in Xi, adjust the angle of the left copying mirror around the horizontal axis.

First, when the binary counter 63 is OO, the analog switch 62 selects the output voltage of the potentiometer 90, so the angle data around the vertical axis of the right mirror is transferred to the partial address of the ROM 67 via the DA converter 64. 104
Since angle data around the vertical axis and horizontal axis of the indoor copying mirror are respectively input to the 0 part addresses 102 and 103 input to , the angle data around the vertical axis of the right side copying mirror is It is determined whether or not it is appropriate. If it is appropriate, the signal 801 becomes 1, and the count-up of the binary counter is stopped, so the binary counter becomes Ol, and the process moves to the next 3J adjustment stage, which is the angle adjustment for water. If it is not appropriate, the signal 801 remains 0, so the binary counter does not count up, and the angle of the right mirror is adjusted around the vertical axis to aim for an appropriate angle. When the angle is too high, the output signal 807 of the ROM 67 outputs 01000010 as described in (a) above, so the mirror surface moves to the right. This change in angle is controlled by the potentiometer 9.
0 is detected and fed back to the partial address 104 of the ROM 67 as angle data. Since the output 806 of the ROM 67 outputs a larger value as the distance from the target angle increases, the pulse generator 69 generates pulses with a large duty ratio, and a large average current flows through the motor 76. In this way, as the right mirror moves and approaches the target angle, the output 806 of the ROM 67 outputs a small value, so the pulse generator 69 generates a pulse with a small duty ratio.
The current of the motor 76 decreases, that is, the mirror surface of the side mirror moves faster as it moves away from the target angle and slows down as it approaches the target angle. When the target angle is reached in this way, the output of the ROM 67 becomes O, the pulse generator 69 generates a pulse with a duty ratio of 0, and the motor 7
The current of 6 becomes O. Therefore, the mirror surface of the side mirror stops at the target angle. Also, at this time, it is determined that the angle of the right mirror around the vertical axis is appropriate, so the signal 801 becomes 1, allowing the binary counter to count up, and the binary counter becomes 01, indicating the first adjustment stage. Move to angle adjustment around the horizontal axis.

Also, if the angle around the vertical axis is too far to the right, the target angle can be reached in the same way by rotating to the left. In this manner, when one adjustment stage is completed, the next adjustment stage is started, so the four adjustment stages are always repeated in sequence as described above. Therefore, when the indoor copying mirror is moved, the respective angles of the side copying mirrors are adjusted to a corresponding new angular target.In other words, when the indoor copying mirror is moved, the side copying mirrors immediately adjust to the new angle target. Follow. If the interior mirror is not moved thereafter, even if the adjustment steps are repeated, the side mirror will also remain stationary because the angle of the side mirror has already reached the appropriate angle.

As explained above, the side mirrors are linked according to the angle of the interior mirror, so the position of the eyes is automatically detected from the information on the angle of the interior mirror adjusted by the driver, and the side mirrors are adjusted to the appropriate angle. The mirror is adjusted.

In the description of this embodiment, the positions of the driver's eyes x, y
, z, and 11 of the corresponding side mirrors! ! I couldn't find the correct angle value. In principle, the driver's eye position x is determined from the angles P and Q of the interior mirror.

y, 2. The side view mirror is moved to an ideal angle according to the determined angle, but this process has not been discussed in the explanation of the apparatus of the embodiment. This is because 31 calculations are performed in advance according to this process for all states, and based on the results, only the action instruction contents corresponding to each state are recorded in the device.

In other words, the ROM stores instructions on how to move the side mirror in response to the situation between the angles (P, Q) of the indoor mirror and the angles of the side mirror.

If the side mirror moves according to this instruction, its angle will change. By issuing the stored instructions one after another for the open side and changing states in this manner, the side mirror is finally adjusted to an ideal angle. In order to simplify the apparatus, it is practical to adopt such a method in the embodiment.

The control of the present invention can also be realized by a microprocessor by executing the aforementioned control steps using a program. If the arithmetic means 95 is replaced with an embedded microprocessor incorporating an AD converter, an input/output board, a program storage means, etc., the circuit can be made smaller.

(Effects of the Invention) Since the present invention is configured as described above, the replica mirror is automatically adjusted to an appropriate angle to provide good rear visibility according to the position of the driver's eyes. Ru. In this way, the present invention improves vehicle safety.

Can be applied to improve convenience and comfort.

4. Brief description of the drawings Figure 1 shows the overall configuration of the present invention, Figure 2 (a) shows the configuration of the invention viewed from the side, and Figure 2 (b) shows the implementation with the rear target set on the rear window glass. For example, Fig. 2 (C) is an example of an indoor copying mirror, Fig. 3 is a view of the structure of the present invention from the 2nd side, and 4th Fig.
5 is an embodiment of claim 5, FIG. 6 is an embodiment of the side mirror, and FIG. 7 is an embodiment of the control circuit. FIG. 8 is a diagram showing ROM addresses and bit determination of stored contents.

■10. Interior rearview mirror, 2. ．． ．． Horizontal axis of indoor copying mirror, 3
09. Vertical axis of indoor mirror, 410. Back [mark 1, 51
0. Mark on the indoor mirror (coordinate origin) 690. driver's head, 7. , , Virtual image of rear target, 898. Focal plane of virtual image, 991. Driver's left eye, io,,,J! ! The right eye of the convert, 14. ,,Center of the driver's left and right eyes, 16. ,
, center line of the driver's seat, 18. ,, Angle detector around the horizontal axis of the indoor copying mirror, 19. ,, Angle detector around the vertical axis of an indoor copying mirror, 20.50. ,, side mirror, 45,
Intermediate goal, 600. ,, Mirror surface of side mirror, 802
．． ,,Pole joint, 607,,Water axis of mirror surface of side mirror, 608,,
, Vertical axis of the mirror surface of the side copying mirror, 76, , DC motor for driving the right side copying mirror around the vertical axis, 77, , I1W motor for driving the right side copying mirror around the horizontal axis, 78. ,,
DC motor for driving the left mirror around the horizontal axis, 79.
,,DC motor for driving the left mirror around the vertical axis.

90, Angle detector around the vertical axis of the right mirror,
91. ,, Angle detector around the horizontal axis of the right mirror,
92. ,, Angle detector around the horizontal axis of the left mirror,
93. ,,Angle detector around the vertical axis of the left mirror mirror,
60. ,, right side copying mirror driving means, si, , left side copying mirror driving means.

62, , analog switch, 83. ,,counter,6
4-66, AD converter, 67, ROM, 68
,, J1 period register, 69. ,,pulse generator,796
．． ,, Motor Drive Circuit, 721-728. , , power transistor 730 , , flip-flop 731 , , power supply voltage monitoring element 74 . ,,Self-holding relay 12 Fig. 4(a) Fig. 4(b) Fig. 4(c) Fig. 4(d) Fig. 8(b)

Claims (1)

[Claims] 1. In a vehicle having a rearview mirror, means for detecting the position of the driver's eyes, and control for generating a signal for controlling the angle of the rearview mirror according to a detected value of the detection means. and a means for moving the angle of the rearview mirror. 2. In one vehicle having a plurality of rearview mirrors, a means for detecting the angle of the first rearview mirror is provided as a means for detecting the position of the driver's eyes, and the angle of the first rearview mirror is detected according to the angle detected by the detection means. 2. The rear view mirror device according to claim 1, comprising a control means for generating a signal for controlling the angle of the second and subsequent rear view mirrors, and a means for moving the angles of the second and subsequent rear view mirrors. 3. A rearview mirror located in the driver's cabin and whose angles around the horizontal and vertical axes can be adjusted, an angle detection means around the horizontal and vertical axes of the rearview mirror, and a calculation using the detected angle amount as input. 3. The rear view mirror device according to claim 2, further comprising means for moving the angle of the rear view mirror on the side of the vehicle in accordance with the output value from said means. 4. A rear view mirror device for a driver according to claim 3, wherein a mark (5) is provided on the mirror surface of a rear view mirror (1) in the driver's cabin, and a target (4) is provided behind the rear view mirror. 5. The rear view mirror device according to claim 3, wherein the rear view mirror device has a target behind the rear view mirror located in the driver's cabin, and has an intermediate target between the rear view mirror and the target.