JPS60168066A - Seat position control device - Google Patents

Abstract

PURPOSE:To adjust automatically to an ideal seat position, and to promote safe driving by recognizing the position of a vehicle driver as a three-dimensional position by a picture. CONSTITUTION:Light is irradiated to a vehicle driver by a light emitting means (a). The reflected light from the driver is detected as picture information by a picture detecting means (b) placed in a slanting front of a driver's seat. Also, the position of the driver moves only in the forward and backward, and upper and lower directions of the driver's seat; and based on a two-dimensional picture detected by the means (b), a recognizing means (c) recognizes a three-dimensional position of the driver in a car room. Based on this three-dimensional position, an adjusting means (d) controls the position of the seat.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a seat position control device that recognizes the position of a vehicle driver.
Recognizes A3 Riru 3rd brother II 1 Ka in the small room with Z1/+
This invention relates to a seat position control device that automatically adjusts the 5th place question.

[Prior art J: Conventionally, for example, a distance detection device or a back sonar that detects obstacles behind the vehicle is used to detect objects outside the vehicle. Devices have been developed to ensure this.

Incidentally, in recent years, from the viewpoint of ensuring safe driving, there has been a strong emphasis on improving the operability of vehicles such as automatic vehicles.
Elements that provide comfort, such as adjusting the angle of the rearview mirror and adjusting the direction of the air conditioner outlet.

It has become desirable to be able to automatically adjust various equipment such as adjusting the height of a tilt steering wheel or adjusting the height of a headrest to suit each driver.

OBJECT OF ER MARK J Here, the present invention has been made, particularly with respect to the seat position, and is based on the unprecedented idea of determining the position of a vehicle driver as a three-dimensional position using an image, and provides a suitable method. The purpose is to provide a seat position control device that automatically adjusts the seat position and promotes safe driving.

[Configuration of the Invention] Configuration of the present invention to achieve the above object, first
As shown in the basic configuration diagram in the figure, there is a light emitting means a that irradiates light to the vehicle driver, and a light emitting means a that is disposed diagonally toward the driver's seat and reflects light from the vehicle driver due to the irradiation of the means a. When the image detection means detects the vehicle driver using image information, it is assumed that the position of the vehicle driver moves only in the longitudinal and vertical directions of the driver's seat.
1 to the two-dimensional image detected by the image detection means; [
Then, there is a recognition stage C that recognizes the driver's three-dimensional position in the vehicle interior, and a seat position adjustment that controls the seat position based on the three-dimensional position of the vehicle driver recognized by the recognition stage C. The gist of the present invention is a seat position control device characterized by comprising means d.

[Example J The present invention will be explained below by giving examples and referring to the drawings.

This embodiment is an IQ embodiment in which the present invention is applied to an automatic medium. FIGS. 2 and 3 are views of how the optical system 1 of this embodiment is installed in the vehicle interior. The optical system 1 of this embodiment corresponds to a light emitting means and an image detecting means.

In the figure, the optical system 1 is installed at a position where the light emitted from the optical system 1 can irradiate an area where the head of the driver 2 is highly likely to be present.

In this embodiment, the optical system 1 is installed at the position 41 in the upper left of the passenger seat, for example, in a corner of the middle compartment, so that the light irradiated to the front passenger seat (not shown) is not blocked.・It is fixed at oak 1~ etc. 3 is steering, 4 is driving JM'
;, 5 is the middle rest, 6 is the center of the steering wheel 3, driver's seat 4
The center line passing through the center of

Here, the front-rear direction of ili, that is, the direction of the center line 6h, is the x direction, the left-right direction is the y-direction, and the up-down direction is the Zh direction.

Next, FIGS. 4 and 5 are configuration diagrams of the optical system 1 described above. Figure 4 is a plan view of optical system 1, Figure 5 is the X-X of the optical system.
Represents a cross-sectional view. In the figure, a lens 11 is fixed to the holder 10 with an adhesive or the like so as to match the central axis of the cylindrical holder 10, and like the lens 11, a two-dimensional solid image repellent element as an image detection means is attached to the lens 111. The child 12 is fixed with adhesive or the like. In this example, the two-dimensional solid-state image sensor is
A two-dimensional charge FY'j combination': r- (two-dimensional CCD) is employed. The holder 10 is fixed to the case 13 with adhesive or screws. The light emitting elements 14a to 14h for auxiliary illumination as light emitting means are formed in a substantially cylindrical shape, and are attached to the case 13 at a predetermined distance from the holder 10 and the two-dimensional solid-state image sensor 12, parallel to the central axis of the holder 10. On the other hand, it is fixed with adhesive or screws, etc., and is provided around 8 times. This is to irradiate the driver 2 with light on even snow.

As the light emitting elements 14a to 14h, high brightness 111 type infrared light emitting diodes are used. The light emitting lights 14'a to 1411 are connected to the optical system control fi 11 circuit 16 via a plurality of lead wires 15, and are connected to the optical system control fi 11 circuit 16 to produce a two-dimensional solid-state decoy image.
2 is connected to the optical system control circuit 16 via a lead wire 17. This optical system control circuit 16 receives an image readout signal from the arithmetic control means described in 412, and outputs the image data of the two-dimensional solid-state eye image element 120 in a frame system 911.
Output to the circuit. Further, a drive control signal for controlling the intensity of the drive current for driving the light emitting elements 14a to 14h is transmitted via the lead wire 15 to the light emitting elements 14a to 14h. h
Output to.

Next, FIG. 6 is a block diagram of the calculation control means 100 as the recognition means. The arithmetic control means calculates the number of passengers (i'/F/
Recognize. 101 is an input port equipped with an A/D, a converter, a multiplex brake υ, etc., and 102 is a medium heat processing section frame device, hereinafter referred to as CPU. ), 103 is the CPU 102
The CPU 10 waits for a predetermined interval according to the data written by the CPU 10.
2, a timer that generates a timer interrupt, 104
Lead A series 105 stores the image recognition processing of the driver 2 and the processing program for operating the actuator.
106 is a random access memory (hereinafter referred to as !it) that temporarily stores data for image recognition processing;
This is an output port that outputs the IJI signal.

Further, 107 is an actuator drive circuit that drives an actuator serving as a seat adjustment means, 108.109.1
Reference numeral 10 denotes an actuator that adjusts the seat position based on a signal from the actuator drive circuit 107.

The operation of this acquisition t, 1-overnight will be explained in detail later. 109 is an input boat 101, a CPU 102
, timer 103, ROM 104, RAM 105, and a pass line connecting the output port 106 to the output port 106. 111 is a power supply circuit that supplies power from a battery 112/Jll, etc. to the performance stop control circuit 100 via a key switch 113. represents. Also, these are the right interface circuits.

The image recognition process executed by the 'ex n RIJ control circuit 100 described above will be explained. FIG. 7 shows the flowchart of the control program for this process.

The engine key is like an accessory! (ACC) MatatiL
When the ignition state (IQ) is set, the key switch 112 is closed, power is supplied to the power source from the power supply circuit 111, and the process starts for 1Jtl.Before going into the detailed explanation of the process, first of all, An overview of the processing will be explained. 1. Image recognition processing Jle generally performs observation, hanging, preprocessing, 1! feature extraction,
Each process of identification and post-processing takes a lot of time.

Snopping 201 to step 203 are observation, steps 204 and 205 are hanging, steps 206 to 208 are pre-processing such as image conversion and processing, and step 20
9 and step 210 represent feature extraction such as boundary line extraction, and steps 211 to 214 represent post-processing. By performing these processes, image recognition processing is performed.

Next, a detailed explanation of this process will be given. d in step 201
3, it is determined whether or not there is a separately provided processing request signal. This processing request signal input means is a request switch (not shown), for example, a dedicated switch attached to the handle, which can be operated without removing one's hand from the handle.

If you don't have this processing request, it's time 4! I will fly. On the other hand, when a processing request is input to the input boat, the CP
At U 102 I, ili+j image recognition processing is started.

First, in step 203, registers and the like inside the CPU 102 are cleared and parameter hits are processed. For example, the coordinates P(x) of the driver's eye positions are stored in both image memory of the RAM 105.

By ρJ periodization of V, Z), the coordinates are set to 1') (0, 0, 0>
Set to cover.

In the next step 203, a control signal for causing the light emitting element 1/I to emit light is output to the optical system control circuit 16 via the output port 10G, thereby driving the optical system 1. Light emitting element 1
4a to 1411 immediately emit light upon receiving control number 15, and the driver 2 is irradiated with infrared light.The emitted infrared light hits the driver 2 and is reflected, and the reflected light is A two-dimensional IN body is captured through the lens 11 (!J1 Soryo 12).

Therefore, an image of the driver is focused on the two-dimensional solid-state image sensor 12 by the lens 11. The two-dimensional solid-state image element 12 divides the image into 512×400 pixels; 1. The electric coupling element r, which consists of a photoelectric conversion-electronic storage element,
The image number, east, on the two-dimensional solid-state dancing image element 12, so-called hanging is performed to convert the continuous light amount into a discontinuous value set for each pixel, and the light m of the reflected light incident on the element is In a world where photoelectric conversion was carried out accordingly, it was accumulated as electric charge.

In the following step 204, the accumulated charges are converted to the image (l
(!The readout signal is sequentially scanned and read out from the upper left corner, but the amount of charge varies depending on the amount of light received by the two-dimensional solid-state image element 12 from one readout to the next readout.) Since the signal is stored as an anomaly signal, it corresponds to the amount of light received by the element during the readout interval, and is sent via the optical system control circuit 16 as an analog signal that is arranged in 1.1 series in the order of readout. and is output to the input port 101 of the arithmetic control ta11 circuit '100.

Then, in the input horn boat 101, the Δ/1) conversion is performed at high speed by the Δ/D converter, and the image is converted into digital 4.1 and converted into 6-bit or 8-bit image information. It is stored in the predetermined upper rear (immediately in the image memory) where I'<ΔM105. The image is captured by infrared light (2j'
- This means that information about the image including half the body is left behind. This operation is called 7 leases in the sense that the image is fixed, and image information as shown in FIG. 8(a) is stored in the image memory of 1<ΔM 10 Ei after the fixation.

In the subsequent suture block 205, the stop I (i"':
8 is output from the input point 101ht+ to the optical system 1, and the optical system 1 is stopped to avoid consuming unnecessary power and proceeds to step 206.

In step 206, the image information obtained in step 204 is subjected to so-called pre-processing to correct the image.
Make emphasis. Image correction is a process of removing noise caused by ambient light. The image enhancement process is also called etch enhancement, and an example of this process is shown in FIG.

The value of the pixel at the center of °C1 for 3 vertical x 3 horizontal pixels Pi, J
and the value of one pixel next to each other Pi −+, j ,
Pi, j-+, Pll, 1 1, ]' i +I+
j is added to the value Pi of the center pixel.

, subtract 4 times 1, divide the value by 4, and divide the value by #
i/C center drawing thread value 1) Spell i, j. This operation is performed for all pixels except the peripheral picture j+;. As a result, the bright and dark areas are emphasized and the image FQ is 11 as shown in Figure 8 (b).
1 and moves to the sub 207.

In step 207', the process of binarizing the image obtained by 4!7 in step 206 with the set value is carried out in 1
I will be attacked. Here, C1 binarization processing involves setting a predetermined level (threshold level) for the gradation information of the image, that is, 6-bit or 8-bit gradation information, and comparing it. The dark part is black, i.e. rO
At the J level, the part that is lighter than the above level is white, i.e. "1".
This is a process that boldly separates the two. The dark part is 2
1. These are the parts of the dimensional solid-state decoy image element 12 where little charge has been accumulated, and the pale parts are where the charge has been sufficiently accumulated.1.
:It is a part. In this way, the images are divided into 1.0 levels, and 10 images as shown in FIG. 8(c) are obtained.

Note that the image after being converted to 2ffj may be changed depending on the determination level of the 211rl conversion, but for example, the weight of incident light may be adjusted by changing the liquid crystal aperture element to a two-dimensional solid-state dancing element 120. It is easy to set a judgment level such that the driver's face is at the self level and the cost is at the black level.

In the following step 208, the boundary line of the image binarized in step 207 is thinned. This process can be easily realized by focusing on the center of the black part shown in FIG. 8(c), and an image as shown in FIG. Ru.

In step 209, J3 scans the Iζ image obtained in step 208 in the horizontal direction from the left corner of the image, and at the top of the image, as shown in the figure, X is minimum and the slope of the tangent is vertical. Detect a certain point. In this case, scanning may be performed from the vertical direction. In addition, since the infrared light is illuminated diagonally from the top, the position of the cross is the best for pinpointing the position, and the detection accuracy is high. In addition, in this embodiment, there is no time for identifying the so-called form of pattern recognition, and a complicated algorithm is not adopted due to the trade-off with processing time. However, depending on predetermined conditions, such as wearing glasses or having long hair, identification processing may be performed following complex feature extraction processing.1. In this way, from the driver's image, parts (
In this case, Todoroki) is detected as a singular point.

In the following step 210, the values of the two-dimensional coordinates x and Z of the singular point on the image memory are determined. , from this f+ mark, calculate the coordinates of the three-dimensional position of the eye inside the vehicle. That is, since the position of the optical system 1 is fixed, the ROM 1
The coordinates of the position of [1] are calculated based on the average value of the distance between the nose and the eyes of the mouthpiece person stored in 04.

FIG. 10 shows the three-dimensional position of the driver's eyes inside the vehicle. 2528 represents the origin, 252b represents the three-dimensional position of the eye after the movement yJJ, and FIG. 11 represents the image 250 in the image memory after the operation Q processing. 2520
is the origin in image 10, 252d is on the image memory,
It shows the position of the eyes after moving. Gatatsu-C'
252a, 2520, +252b and 2520 have a one-to-one correspondence, respectively.

Here, driver 2 is driving the steering wheel.
'1, the movement in the lateral direction, i.e. the y-axis, is restricted;
In other words, since the movement in the y-axis direction is considered to be small,
Divide the space to the left and right with the seat at the center, including on the center line 6 (
), that is, the driver's seat can be considered to move only in the longitudinal and vertical directions. Therefore, since the position 302d of the eyes of the driver 2 according to the image 250 of the image memory after frame processing is determined by the coordinates (×1.2+) from the origin 302C of the memory, the position of the eyes of the driver 2 is determined by The position P (X, 0., z) can be set.

In the following step 211, the three-dimensional position ff1P-(X,'
Distance #111]-river between coordinates 1]' (X -, O, z') and the operation determined in the previous process
'1, i.e. X-X '')'-)-(Z -Z')'
I'm going to perform it. In other words, the movement of the driver 2 on the xl plane is calculated t1.

In step 212, it is determined whether the value of IP-PM is greater than or equal to the set value, and I
If it is determined that
However, if it is determined that lI]-P-1 is smaller than the set value, the process proceeds to step 214. This step is
This is provided to prevent the driving feeling from worsening due to the gradual movement of the engine and vehicle equipment as the position of the eyes moves gradually.

Then, IP-PM is determined to be equal to or higher than the set value/:11
In step 213, the actuator 108 is driven based on the value of P, and a drive signal is output from the output boat 106 to the actuator 1O8 via the actuator drive start path 107. J
The actuator 108 is driven, and step 21
/l.

If it is determined in step 212 that I P-P'l is smaller than the set value and there is no need to drive the actuator 108, or after the actuator drive process in step 213, the process is performed. Finally, in step 214, it is determined again whether or not there is a processing request, in the same way as was done in the suite 201, and if the processing request is d.
If it is determined to do so, the process returns to step 203 and the image recognition loop process 1! l! I do. One loop J11! , the driver's three-dimensional position data is performed, and the movement of the eye position of the 'C driver 2 is detected based on the performance tl f+f+, and the eye position is determined according to the change in the eye position. The actuator is driven to a position suitable for operation, and the power seat 1- is driven by this actuator. In this way, as long as there is a processing request, loop processing is performed repeatedly. Further, if it is determined that there is no processing request, the processing of the tree routine is ended.

Next, regarding the above power seat adjustment, see Figure 12 or 1.
This will be explained using a specific example in FIG. Figure 12, number 1-bottom.
A schematic diagram of a power seat 300a that can be adjusted forward and backward is shown. Power seat 300a is actuator 108
, 109 and 110 are built in. 108 and 109 are operated by a dedicated switch. Also, 110
is started by another dedicated switch. There, the magic actuator 108 and 109 will be explained, and the actuator 110 will be described later.

First, the adjustment of the power seat 300a is started when the driver turns on a special switch boot installed inside the steering wheel. When the driver gets in the car, he can turn on the dedicated switch f- while holding the steering wheel. For example, when you want to move the power sea 1 to 300 tl forward, you move your head forward. Then, the occupant position recognition system detects this and activates actuator 1.
08 to move the power seat 300a in the direction F in the figure.

If you want to move the power seat 300a backwards, just move your head backwards and the power seat 300a
direction.

Also, when you want to raise the power seat 300a, extend it and move it to the 2nd position. When it is covered, the occupant position recognition system detects this and drives the actuator 109, and the power seat 1-3008 is moved in the U direction in the figure. Lower the power seat 300a11. '14, raise your heads and move your heads.

Then, the occupant position recognition system (detects dirt and
Drive the C actuator I-109 and power seat 1-30
08 is moved in the direction shown in the figure. When the adjustment of the seat position is completed, the driver presses the dedicated switch A7 to complete the process, allowing each driver to set a preferred seat position.

In this way, the driver can adjust the seat while holding the steering wheel, which relieves the driver from the trouble of adjusting the seat. Incidentally, when a passenger other than the driver wishes to move his or her seat, a dedicated switch may be provided and the seat position may be adjusted to the optimum position by operating this switch.

Next, FIG. 13 shows a structural diagram of a power seat 300b whose front end can be adjusted vertically and longitudinally.The 1J power seat 300a shown in FIG. As shown in Figures 14(a) and 14(b), front and rear and front end upper F can be adjusted. First, the drive section 30 corresponds to the actuator 108.1'09 in FIG.
Structure of 0b 1) 1 to -) (Explanation) The drive section 30 is
When the 0b+ shifter 301 rotates, the motor 301 rotates.
304. And 1~Luke 1 Bul 303 both sides A-Mugya 302.3
0 and 1 are fixed to the lower rail 305, the slide screws 1306 and 307 move back and forth, and the upper rail 308 that is meshed with them moves to the lower rail 3.
Moves back and forth relative to 05.

Then, as shown in Figure 14 (a), power seams 1 to 1
300b is driven back and forth.

Next, Akchi 1. I-Drive from evening drive circuit 107'
h”: Drive unit 300t) + motor 310 by ¥3
When the motor 310 rotates, the s-b gear 31 rotates.
1 can be conveyed. Since the slide screw 307 is fixed to the upper rail 308, the A-mgya 311
The rest moves back and forth with respect to the upper rail 308. Also, since the worm gear A7311 is fixed to the vertical rod 312 and rotatably connected to the I-coupled link 313, the back and forth movement of the worm gear puller 7311 is controlled by the link 313.
13, the bar decal rod 312 is rotated.

Since the link 314 is fixed to the barb-cal rod 312, it similarly rotates 1°. As a result, the I-link 314 is fixed to the seat cushion and moves up and down.
J and C move up and down centering on the hinge fulcrum 315 at the rear end of the fixed seat cushion C.

Power seat 3 as shown in Figure 14 (b)
001) is driven up and down.

Next, FIG. 15(a) shows a schematic diagram of the reclining device 300d, and FIG. 15(b) shows a structural diagram of the geometrical portion 300e of the reclining device 300d.

This geometrical part 300e corresponds to the I cuticoator 110.
). The recliner Ff 300 d is configured to be controlled by a position recognition system (
d3 is controlled by providing a dedicated switch on the steering wheel. When you turn on the special switch, the reclining device N300 (l) moves according to the position of the driver's eyes.For example, when you move your head backwards, it moves in the direction shown in the figure, and when you move your head forward, it moves in the direction shown in the figure. Move in direction H. After moving, turn off the dedicated switch.

Next, the mechanism part 30 of the reclining device d in FIG. 15(b)
The structural diagram of 0c will be explained. First, when the j+7 switch is turned on, the gear 1321 of the motor 320 rotates, and the outer connecting gear 322 meshed with it also rotates. This connection j Ingi \7322
and 77 outer side hinge pin 323 are connected by serrations, the hinge pin 323 rotates, and the rotation is also transmitted to the connecting pipe 324 and the inner side reclining.

C. The hinge pin 323 rotates while sliding on the seat back 325 and seat cushion 326. Further, since the external gear 327 is fixed to the seat cushion 326, the internal gear A7328 on the sea 1 to back 325 side rotates eccentrically.

This J, 94 has power sea 1-300a, 300b
.

If the reclining device 300d is used and the actuator is controlled according to the position of the driver's eyes, the hassle of having to manually adjust the seat each time is eliminated and a good field of vision can be obtained.

As detailed above, the present embodiment has four teeth.During driving, the driver 2 has little movement in the y-axis direction due to the steering wheel 3 and driver's seat 4, and The position of the driver 2 is above the driver's seat, that is, the driver's neck is recognized three-dimensionally and the driver's neck is recognized three-dimensionally, without assuming that the driver is moving only in the front-rear, up-down direction of the driver's seat.

One two-dimensional solid-state dancing image element (two-dimensional CCI)
>12 is detected as an image, the two-dimensional position of the driver's eyes is recognized from the image information, and from this the driver's 11
The three-dimensional position of the object is recognized. In this way, by determining the position of the driver's 2 eyes, the driver's actual 33-dimensional position 1rj can be known very precisely.

Therefore, the actual three-dimensional position of the driver 2 can be accurately grasped 11 and 111 without being affected by the height 15 of the driver 2, which varies from person to person, and the movement under the X-Z plane.
According to the three-dimensional position of driver 2 in the room, No? Can drive the quay.

Therefore, OJ can adjust the seat position according to individual differences between drivers.
It can be set to the optimum position. In this way, it is possible to realize good operability of the seat position depending on the individual driver. Therefore, the driver is freed from the trouble of operating these acticoators.

Furthermore, it is possible to improve the visibility ahead of the driver and promote safe driving. For example, as shown in FIG. 16, the height of I in order to ensure the forward visibility necessary for safe driving depending on the front and back position of the seat needs to be higher as the seat is farther back.

Then, make an actuator as shown in Figure 17)
When the seat height is adjusted by
Since the near point also moves from 360 to 361 in accordance with this, safety in front can be ensured.

Since the two-dimensional solid-state decoy image element 12 is used, the detection unit can be made smaller compared to the conventional III image tube, and it has no moving parts and has excellent vibration resistance f1.
Vehicle j! It is possible to achieve high reliability for practical use.

In addition, in the continuous chart of FIG. 7, the request signal for image recognition processing is sent to a software timer or a hardware timer (it may be generated at each set time; in other words, the request signal for image recognition processing may be generated at a set time interval. This allows the actuator to be driven at the set time, and the actuator can be corrected according to the movement of the eye position.

(2/Ya I4-R) Also, when the infrared light emitting element 1/I, L: 10,000; person temporarily stops the vehicle +1
．． If the position of the eyes cannot be detected, such as when one looks to the side or turns behind oneself due to unavoidable circumstances, the cabinet recognition process will be suspended. good.

Then, the processing request in step 201 is such that the vehicle speed pulse is greater than or equal to a predetermined value of 1+n, or the neutral switch is set to A.
] You may start by specifying. This is because during a pause, such as during a pause, you may move your face and get stiff.

It is necessary to make the emission time of the infrared light diode continuous and adjust the timing of emission and reception.Also, it is necessary to set the visible light within a range where the driver does not feel dazzled. May be used.

Next, another example of the optical system will be explained. This example is before) di
This optical system has almost the same configuration as the optical system of the embodiment, but has a configuration in which the amount of light from the light emitting element can be controlled. In the example, all the light emitting elements were configured to be driven equally, but
In a bright environment, the so-called blooming phenomenon occurs because there is a large amount of light, which requires a sufficient amount of light. Iko(・, the light you need 1
1. Accordingly, in this example, only the 'ζ light emitting elements 14a and 14e are driven in FIGS.
4a, i4c.

The brightness of the light emitting elements is controlled by a method of driving four light emitting elements 14e and 14(I) or a method of controlling the drive current of all the light emitting elements 14a to 14h.

As described above, according to this example, a clear image can be obtained, the algorithm for detecting the driver's position can be simplified, the parts and frames can be connected, and the detection accuracy can be improved.

Next, other examples with different optical systems as shown in FIGS. 18(a) and 18(b) will be described. FIG. 18(A) is a plan view of this example, and FIG. 18(B) is a YY cross-sectional view. In this example, the first
The structure is almost the same as that of the embodiment, but a slightly longer cylindrical long holder 510 is used as the holder 10, and a mechanical light meter 1Xtl Jiη or an electric aperture using a liquid crystal is installed above the lens 511. 520, (infrared light emitting elements 514a to 5141 as light emitting means) may also be used (infrared light emitting elements 514a to 5141).Furthermore, a filter may be used for the visible light filter 1 as a mechanism for light to cover the light source 11. 12
There is C in order to optimally control the amount of light incident on.

According to this example, a clear two-dimensional image can be obtained, which is similar to the effect of the previous example. Then, the liquid crystal aperture element 520
As a result, the amount of light collected on the two-dimensional solid-state image pickup device is controlled within a certain range, which has the effect of preventing the blooming phenomenon generally seen in solid-state 1Gl devices.

Further, as the light quantity aperture 1ffi to 4fl, a transparent ceramic aperture utilizing the electric field dependence of ceramic birefringence may be used instead of a liquid crystal aperture element or a normal mechanical light quantity aperture. Transparent ceramic offers excellent durability
However, since there is little change over time, the reliability of the device can be improved.

Next, another example of the light emitting means using an infrared strobe will be described.

Figure 19 (a) is a side view of the infrared strobe 605, where 650G is an infrared light body, 6mi 51 is a lens for broadly irradiating the driver 1 with infrared light, and 653 is an infrared light beam. Infrared filter that transmits visible light but does not pass visible light, 655 is a coupe, 657
1 and 2 respectively represent inner parts for fixing the lens 651 and the infrared filter 653 to the coupe. The infrared strobe 605 is attached with a bolt 65 approximately in the center of the instrument panel 1-panel 604a.
8a.

It is fixed by a nut 65ε3b.

Furthermore, the emission spectrum of the infrared light emitter 650 is shown in FIG. Therefore, light with a wavelength of 8QQnllll to F is cut off, and only infrared light is illuminated on half of the driver's body.
It is configured so that there are 1 and C. According to this example, the driver does not feel dazzled even when the infrared strobe 605 emits light, and the image is not affected by external disturbances.

Note that other configurations may be used as described below without changing the gist of the present invention.

That is, the light emitting means and the image detecting means may be installed at a position other than the upper left of the driver, and at a position that captures the driver's upper body closely;
For example, it may be placed in the upper right corner of the vehicle.

The light emitting means may be a light emitting element equipped with a lens and having a light beam with a set irradiation range (for example, 60°), or a light emitting element having a normal wide-angle light beam. A small lens is installed and it is slightly heavy.1. 【beam(
The irradiation range is 10°) and the iI of the image! ! I Ill /
:! It's good to be able to do it. Note that the rrj hemp of the irradiation range can be corrected as appropriate.

Then, the MO81 transistor was switched to the output of the photodiode A-dore array instead of the charge-coupled device (COD), which was used as a solid-state image sensor used as a part of the image detection means. A solid one-Ild image element of the type may also be used. Since the MOS type solid-state image element has a simple image readout circuit, the image signal control circuit can be simplified and miniaturized.

In addition, in the pattern recognition process performed by the recognition means, a differential process is performed instead of the 211i'N process, the contour line of the face is determined, and the eye position from this contour line is aimed at 6. U
b Good. In addition, the two-dimensional image of the face is divided between white and black.
You can also divide it into the middle part and adjust the position of the eyes from there. In other words, the image may be scanned horizontally, two places where first there is white and then there is black are detected, and the first detected position may be specified as the position of the eye.

When recognizing the position of the eyes, instead of expressing it using the 16 coordinates of the 1'' digit, it may be possible to detect the 11 of the driving position or the shoulder area and express it using the P4W sign.

Furthermore, as a form of coordinate expression, it is also possible to express the coordinate position as seen from the optical system 1 (for example, in the form of polar coordinates with the position of the rearview mirror as the origin, and to recognize the position. This is because calculations are simplified and are particularly irritating when adjusting the angle.

[Effects of the Invention 1] The seat position control device according to the present invention includes: a light emitting means for emitting light to a vehicle driver; an image detecting means that detects the position of the vehicle driver with image information ();
Based on the two-dimensional images detected by the image detection means, the vehicle driver's three-dimensional head position in the interior is recognized by assuming that the vehicle driver is moving only in the l and j directions. a recognition means, and a three-dimensional 1+'/ of the vehicle driver recognized by the recognition means;
There are 1,4 -C in b'l and 1lIi+C, such as seat position adjustment means for controlling the seat position.

Therefore, the actual three-dimensional position of the driver can be recognized with high accuracy depending on individual differences between drivers or the movement of the driver on the surface. From this, the seat position can be moved to a suitable position. In other words, good seat position operability can be achieved. Therefore, the driver can secure a good field of view of 1/j, making it possible to ensure even safer driving. Another side effect is that the device is simple and has fewer failures.

[Brief explanation of the drawing]

Figure 1 is a basic configuration diagram of the GEL invention, Figure 2 is a front view of the mounting position of the embodiment (showing the q position), Figure 3 is a front view of the mounting position, and Figure 4 is a front view of the mounting position. FIG. 55 is a front view of the optical system of the embodiment, FIG. 55 is a sectional view taken along the line X-X, FIG.
8(a), (b)-1(c) and (d) are explanatory diagrams showing an example of image processing. FIG. 9 is an explanatory diagram of the process of increasing the gradation of pixels, and FIGS. 10 and 11 show the driver's eye 41'1 in the image memory.
f19? Fig. 12 is a schematic diagram of a loose seat with vertical and longitudinal adjustment angles (IF); Fig. 13 is a structural diagram of a power seat with vertical and longitudinal adjustment at the front end; Fig. 14 Figures (A) and (B) are schematic diagrams of the J power seat shown in Figure 13, Figure 15 (A) is a schematic diagram of the reclining device, Figure 15 (B) is a structural diagram of the reclining device, and Figure 16. Figure 17 is a graph showing the relationship between the front and back positions of the seat and the eye height required for safe driving. Figure 18 (B) is a plan view of an example of
B) represents a graph showing the emission spectrum of an infrared emitter. 1...Optical system 2...Driver's seat...Dear ring 4...Driver's seat...Center line 12...Second-order solid-state dancing image elements '14a to 141)...Light emission Element 100...Arithmetic control circuit'+04...ROM 2O3...[De8M 300a, 300b...Power seat 300d.
...reclining device agent Patent attorney established 1 student idiot Figure 1 Figure 2 Figure 8 (A) (B) Figure 8 (C) Figure 9 Figure 10 Figure 11 Figure 12 Figure 1・ Fig. 13 Fig. 14 (a) (b) Fig. 15 (b) Fig. 16, 1 A Contribution (nm)

Claims (1)

[Scope of Claims] 1. A light emitting means for irradiating light to a vehicle driver, and a light emitting means disposed diagonally in front of the driver's seat, and detecting the reflected light from the vehicle driver due to irradiation by the light emitting means as image information. and a vehicle interior image detecting means based on the two-dimensional image detected by the image detecting means, by considering that the vehicle driver's position moves only in the longitudinal and vertical directions of the driver's seat. a recognition means for recognizing the three-dimensional position of the vehicle driver in the vehicle; and a seat position adjustment means for controlling the seat position based on the three-dimensional position of the vehicle driver recognized by the recognition means. A seat position control + device characterized by being equipped with the following. 2. The seat position control device according to claim 1, wherein the image detection means has one two-dimensional internal body imaging sensor. ;3. 3. The seat position control device according to claim 2, wherein the light emitting means is an infrared light emitting element disposed in close proximity to the two-dimensional inner body UI element.