EP1297511B1 - Verfahren und vorrichtung zur überwachung des innenraums und des umfeldes eines fahrzeugs - Google Patents
Verfahren und vorrichtung zur überwachung des innenraums und des umfeldes eines fahrzeugs Download PDFInfo
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- EP1297511B1 EP1297511B1 EP00941906A EP00941906A EP1297511B1 EP 1297511 B1 EP1297511 B1 EP 1297511B1 EP 00941906 A EP00941906 A EP 00941906A EP 00941906 A EP00941906 A EP 00941906A EP 1297511 B1 EP1297511 B1 EP 1297511B1
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- vehicle
- interior
- camera device
- driver
- sensed
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Images
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19695—Arrangements wherein non-video detectors start video recording or forwarding but do not generate an alarm themselves
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19639—Details of the system layout
- G08B13/19645—Multiple cameras, each having view on one of a plurality of scenes, e.g. multiple cameras for multi-room surveillance or for tracking an object by view hand-over
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
- G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
- G08B13/19639—Details of the system layout
- G08B13/19647—Systems specially adapted for intrusion detection in or around a vehicle
Definitions
- the invention is based on a method of the type of the main claim.
- page 8 is in the article "The new Eyes of the car, limousines learn to read "a procedure shown in which the space in front of the driver in the vicinity of the Vehicle is monitored by two video cameras. The image determined by the cameras is then regarding traffic signs recognizable in the picture evaluated by the driver in a display unit are then displayed.
- a Road map captured to the headlight alignment such to control that the light cone is on the road. For in the event that the car gets to the side of the road, a acoustic and / or visual warning triggered.
- the Brain activity especially of a driver measure and in the event of a deviation from the normal waking state to trigger an alarm. The measurement is carried out via on Electrodes attached to the driver's head.
- the inventive method with the features of The main claim has the advantage that both the Interior as well as the environment of a vehicle with only one Camera device is detected. This is particularly because of this possible that a detection of the interior and the environment takes place alternately. With a sufficiently quick change between capturing the interior and the environment on the one hand a loss of information due to the change be neglected while on the other hand only one Camera device and not two for the interior and that Environment of the vehicle are required. Likewise, there is only one Computing unit for processing the obtained Image information required.
- the interior of the Vehicle is illuminated with a radiation source that is suitable for the human eye is at least largely invisible.
- a radiation source that is suitable for the human eye is at least largely invisible.
- Infrared radiation source preferably one or more Infrared light emitting diodes to use. This will counter interference from the driver is avoided.
- a first Process step only the visible part of the environment
- a second process step only the visible part of the Capture interior.
- a mathematical separation from Images of the interior and the surroundings are therefore not required, which meets the requirements for a Computing unit in which the image information is evaluated be lowered.
- switching between capturing for the camera visible part of the environment to capture the for the Camera visible part of the interior through a make electro-optical light valve, in particular by a liquid crystal cell, depending on one applied signal between a transparent and a absorbing mode is switchable.
- the driver's brain waves too monitor is the observation by the camera Do not attach electrodes to the driver's body required. Because such electrodes are not only a hindrance can, since it gives the driver freedom of movement limit, but also by the driver before starting the journey forgot to attach or intentionally for convenience cannot be carried out, the use of a Falling asleep warning is easier and more pleasant for the driver be designed.
- the method according to the invention also has the advantage that in addition to observing the interior a detection of the traffic signs around the vehicle is possible and thus the driver e.g. on warning signs or on top speeds through an optical or acoustic output unit can be specifically pointed out.
- This information can e.g. to control a chassis be used by an uneven load of the vehicle can be compensated if e.g. only on the left side of the vehicle seated people, the driver and a person behind the driver.
- a seat heating can be controlled only then is activated when someone actually uses the seat used.
- it is a determination of whether a seat occupied or occupied with a child seat, to that extent advantageous that the deployment of an airbag is blocked, if a seat is unoccupied or occupied with a child seat is. On the one hand, this can cause unnecessary triggering of a Airbags in an unoccupied seat as well as one Injury to a child caused by an airbag during the occupation a seat with a child seat can be avoided.
- the lip movement of one predeterminable person in the vehicle preferably the person of the Driver to support a voice input.
- a voice e.g. as a consequence of Driving noise ambiguities on which command entered has been
- an evaluation of the Lips movements of the driver by the camera device be recorded, a check of a voice input respectively.
- This is e.g. possible by the lip movements thereupon be analyzed whether in the Voice command unit also understood the syllables are included, the detected lip movements correspond.
- Can the voice input unit work from the Understand no clear assignment, so this is possibly by comparing it to lip movements possible.
- a device of this type to provide that a detection of the vehicle environment and the Vehicle interior is possible.
- a camera device in such a way that a beam path towards the interior and a Beam path points in the direction of the road, preferably in Driving direction as the most important for a driver Information about the vehicle's environment is usually the road or the edge of the lane and objects in your own lane represent.
- a deflecting mirror in the camera device that is semi-transparent.
- a beam path can enter the camera device, for example, from the interior through reflection and another beam path through transmission through the semitransparent mirror. This eliminates the need for mechanical adjustment between the two beam paths.
- At least one deflecting mirror concave or convex it is also advantageous to have at least one deflecting mirror concave or convex, as this depends on Use of the device a restriction or a Expansion of the area observable by the camera is possible.
- the camera is also advantageous to use the camera as a CCD or a Run CMOS camera.
- the invention This allows the camera device to be particularly inexpensive be carried out. It is also advantageous that To equip the camera device with at least two cameras, because stereoscopic image acquisition is possible also conclusions about the distances of objects from one Vehicle or distances within the interior the evaluation of a distance-dependent image offset make it accessible.
- the camera device in one to attach the upper area of the windshield or the Integrate camera device into the roof of the vehicle.
- the overview of the vehicle environment is on the one hand the overview of the vehicle interior guaranteed particularly well.
- At least one deflecting mirror is designed such that it can be aligned via an adjusting device, that at least the driver’s eyes and / or lips of the camera are detectable. This is particularly the case with changing drivers advantageous, on the one hand a have different heights and on the other hand one may prefer different seat settings. Further are also movements of the driver while driving too note.
- a deflecting mirror is designed such that the captured field of view can be tracked especially a driver's eyes and / or lips kept constantly in the detection range of the camera device become. Especially when driving, there is both a Function of sleep control, as well as a control guaranteed a voice input.
- FIG. 1 shows an arrangement of the Device according to the invention in a motor vehicle
- figure 2 shows a flowchart of the method according to the invention
- FIGS. 2a and 2b details of the method according to the invention
- 2c shows an evaluation method according to the invention
- FIG. 3 a flowchart for a further execution of the inventive method
- Figure 4 shows an embodiment of the device according to the invention
- Figure 5 is another Execution of the device according to the invention
- Figure 6 a another embodiment of the device according to the invention
- FIG. 7 a further embodiment of the device according to the invention
- FIG. 1 shows a camera device according to the invention 10 in a motor vehicle at the upper edge 11 of a Windshield 12 arranged.
- the camera device points a first optical opening 13, a first Beam path 14 leads to a driver 15 of the vehicle.
- the Center beam of the beam path is shown.
- the camera device 10 has a second optical one Opening 16, which on the first optical opening 13th facing away from the camera device 10 and is therefore not visible from the perspective shown.
- the second optical opening 16 is therefore only dashed characterized.
- There is also a second beam path 17 outlines that of the second optical opening 16 of the Camera device 10 through the windshield 12 leads into the vehicle surroundings in the area in front of the vehicle.
- the driver's gaze leads in the same direction, which is outlined as a third beam path 18.
- the display unit 21 is preferably designed as an instrument cluster, in which a variety of advertisements become an electronic Unit are integrated.
- one is also free programmable instrument cluster possible, in which one Representation of various display instruments in one Screen e.g. in the form of a liquid crystal display he follows.
- One is not shown separately in the figure Computing unit through which the camera device 10 recorded image information are processed.
- the Computing unit can either in the housing shown Camera device 10, in the roof of the vehicle beyond upper edge 11 of the windshield or in the cockpit 19 of the Be arranged vehicle.
- the embodiment is the computing unit in one for the Driver 15 not visible area of the display unit 21 arranged.
- Image information is based on the computing unit, e.g. at if the driver threatens to fall asleep or if The speed limit may be exceeded long data transmission paths can thus be avoided.
- the camera device 10 is not so close to that shown vehicle roof in the upper area of the Windshield 12 arranged that monitoring the Vehicle interior and monitoring of the road ahead Vehicle is possible.
- the Camera device therefore in the middle of the vehicle with respect to the Arranged sides of the vehicle.
- the first and second optical openings 13, 16 can open be carried out in different ways. It is an execution as a filter, as an aperture, as a lens or one Combination in the form of a series connection of the mentioned components possible.
- FIG. 2 shows a sequence of the method according to the invention shown.
- an initialization step 30 becomes a first in a first method step 31
- Image information 32 of the vehicle surroundings is captured and by the Processing unit evaluated, with a first output 33 on optical and / or acoustic output media depending from the first image information 32.
- the first edition takes place depending on the vehicle environment.
- second method step 34 is made a second image information 35, in which one Image information of the vehicle surroundings and the Vehicle interior is detected superimposed under Taking into account the previously determined first Image information 32 of the vehicle surroundings by subtraction the first image information 32 from the second Image information 35 image information of the Vehicle interior determined so that depending on a second output 36 of the determined image information also via optical and / or acoustic output media takes place, the second edition in particular from the Image information of the vehicle interior is dependent.
- a subsequent decision step 37 takes place Cancellation of the procedure if the camera device is deactivated, especially if the vehicle is turned off. This decision-making process is in the Drawing marked with the letter "Y”. In this The case ends with a deactivation of the Camera device in a final process step 38. If the vehicle is not deactivated, it becomes branched back first method step 31. This Decision path is in Figure 2 with the letter "N" characterized.
- the first method step 31 is in FIG. 2a presented in detail.
- a first sub-step 40 the camera device is activated and the first one Image information 32 recorded.
- a second step 41 is the first image information 32 to the computing unit submitted for further processing.
- the second method step 34 is shown in FIG. 2b Sub-steps subdivided.
- a first sub-step 42 becomes the one not visible to the human eye Radiation source activated by using an electrical Voltage is supplied.
- a second sub-step 43 the camera device 10 is activated and an overlaid image of the interior and the vehicle surroundings is considered a second Image information 35 captured.
- the lighting is regulated by exposure, e.g. a variable aperture or regulation of the light-sensitive sensors of the camera device current.
- the second image information after successful image acquisition 35 stored and sent to the computing unit for further Processing submitted.
- a fourth sub-step 45 becomes the one not visible to the human eye Radiation source deactivated. An identification of the image of the The interior then takes place in one in FIG. 2b not shown calculation step in the computing unit.
- FIG. 2c shows an evaluation method by Computing unit shown that is from processing the image information captured by the camera device and the first edition 33 and the second edition 36, respectively consists.
- a Warning of falling asleep by observing the driver 15 with an observation of the vehicle interior is required and consequently the second edition 36 he follows.
- a method for Vehicle environment detection can be carried out, e.g. for the detection of Traffic signs and / or road markings, the first edition 33 takes place.
- a first initialization step 50 the first and second image information 32 and 35 an image the driver's eye area by the computing unit determined.
- a first decision step 52 captured image with a previously saved one Image information 51 of the driver's eye area compared.
- the image information 51 is an empty image, if that Vehicle just started and none yet Image information has been saved. If it is found that the driver’s eyes are open, so the driver’s not is sleeping, or if the image information 51 is the empty image, see above the decision path N is followed and in one Method step 53 becomes the newly recorded partial image is stored in another memory filed that the driver awake at the time of recording is.
- a final step 54 the evaluation process completed. The next time the first and second image information 32 or 35 to the computing unit the evaluation process started again. The restart takes place moreover, each time the evaluation process ends, if the vehicle or camera device is not is deactivated.
- the computing unit determines that the eyes of the Are closed, the decision path Y of the first decision step 52 from a second Decision step 55 followed. Here it is checked whether the driver's eyes at the last shot were closed. If this is not the case, it becomes one Branch 56 branches in which it is stored that the Driver's eyes at the time of the current shot are closed. In a final step 57 Evaluation process ended. Were the driver's eyes already closed at the last recording so the Decision path Y from the second decision step 55 continued to a first warning step 58.
- This Warning is an acoustic or visual warning Warning, preferably via the display unit 21. that only a warning after a second shot and thus takes place after the second decision step 55 avoided a warning from accidental Simultaneous blinking of the driver and one The driver's eyes are therefore closed the camera device 10 is largely avoided.
- a third Decision step 59 in which image information 67 another shot of the driver's face is taken into account.
- decision path Y becomes a Method step 60 branches by the newly added one Image information 67 is stored.
- the Evaluation process ended.
- the third Decision step 59 is a decision path N to one followed second warning step 62.
- the second warning step 62 there is an acoustic warning much louder than in the first warning step 58.
- a fourth Decision step 63 becomes image information again 68 of the driver's face and the condition 69 queried a switch.
- a first Sub-step 64 is now saved that the eyes of the Driver are open, and the evaluation procedure is in a final step 65 ends. If neither is found that the driver 's eyes are open, nor that the Switch is triggered, so in decision path N to a third warning step 66 branches. It now follows another loud, acoustic warning, and the vehicle is switched on with the hazard lights and the Brake lights delayed, making a driverless drive is avoided. Because there are opportunities where one Identification of the driver's eyes via the Camera device is not possible, for example if the driver wearing sunglasses is a deactivation of the sequence shown in Figure 2c possible.
- the method shown in FIG. 2c can also be transferred to the monitoring position of the vehicle for a road marking if the detection of the image information in the driver's face area is replaced by a detection of the image information of the road marking and the position of the vehicle relative to the road marking is evaluated.
- FIG. 3 shows another method according to the invention for monitoring the surroundings of the interior of a motor vehicle.
- the same reference numerals stand for the same method elements as in FIG. 2.
- first image information 81 of the vehicle surroundings is determined in a first method step 80, forwarded to the arithmetic unit, and depending on the first image information 81, the first output 33 occurs.
- second image information 83 of the interior is captured by the camera device and forwarded to the computing unit.
- the second output 36 occurs as a function of the captured image information.
- an electro-optical light valve is opened in the direction of the vehicle surroundings.
- an electronic light valve to the vehicle interior is opened.
- the second method step 82 there is a decision step 37. If the camera device is deactivated, the decision path Y is followed and in a final method step 38 the camera device is deactivated. Otherwise, the decision path labeled N is branched back to the first method step 80.
- the respective light valve is only opened for 90% of the duration of the respective method step both during the first and during the second method step 80, 82. This avoids an overlap of the two pieces of image information to be recorded. This is because an overlap of the image information to be recorded is avoided in particular at low temperatures, which can make the switching behavior of the liquid crystal sluggish.
- the evaluation method described in FIG. 2c can be transferred directly to the first edition or the second edition 36 in FIG. 3.
- FIG. 4 shows an embodiment of a Camera device 10 with a computing unit 110 shown.
- the camera device 10 is in one Housing in which a camera 100 that acts as a CCD or a CMOS camera is designed with a first lens 101 is arranged.
- Light from strikes the first lens 101 a first deflecting mirror 102.
- the first deflecting mirror 102 is semi-transparent, so that on the one hand first beam path 103 from the vehicle surroundings through a Opening 109 in the housing of the camera device 10 through the first deflecting mirror 102 and the first objective 101 Camera 100 runs.
- a second beam path 108 from a second deflecting mirror 104 to the first deflecting mirror 102.
- the second beam path 108 becomes the camera 100 through the first deflecting mirror 102 diverted.
- the second beam path 108 goes from that Vehicle interior and passes through a second lens 107 into the camera device 10. Before the second Deflecting mirror 104 reached, it crosses one Infrared filter 106.
- the camera 100 is over a first one Data connection 111 connected to the computing unit 110.
- the Computing unit 110 consists of a control unit 112 and an evaluation unit 113, which has a second Data link 114 are interconnected.
- the Evaluation unit 113 is via a third data connection 117 with sensors 116 and via a fourth data connection 118 at least with acoustic and / or optical Display elements 119 connected.
- the control unit 112 is also via a fifth data connection 120 with the camera 100 and via a sixth data connection 122 with a Radiation source 121 connected to the human eye invisible radiation is emitted.
- the radiation source 121 is arranged in a housing, which is preferably as a reflector 123 is executed.
- the first beam path 103 and the second beam path 108 are each determined by the optical axis of the Marked beam path.
- the optical axis for runs in front of the first objective 101 both beam paths are the same.
- the better clarity for the sake of drawing the two beam paths are in the Figure 4 and in the following figures on this stele drawn in parallel.
- the computing unit 110 and the camera device 10 can also in a single housing near the vehicle roof or the upper limit of the windshield 12 may be arranged. However, it is also possible to use the computing unit 110 and the Camera device 10 at various points in the vehicle to arrange. In a preferred embodiment, the Computing unit 110 integrated in the display unit 21.
- an image is generated of the vehicle surroundings via the first beam path 103 the camera 100 detects.
- the captured image is both from the arrangement of the camera device 10 in the vehicle, 'as well of the size of the opening 109 of the housing Camera device 10 as well as from the setting of the first Objective 101 dependent.
- the opening 109 is there preferably with a transparent cover, e.g. one provided transparent plastic disc.
- a third lens it is possible to arrange a third lens here.
- Will the second method step 34 is carried out in the first Sub-step 42 by the control unit 112 via the sixth Data connection 122 the radiation source 121 for the Activated period of capturing the image of the interior, by applying a voltage to the radiation source 121 becomes. There is no voltage source in FIG. 4 shown.
- the Radiation emitted into the interior of the vehicle is not for a human being visible.
- the radiation source is as one Infrared radiation diode or as a Infrared radiation diode array from a variety of Infrared radiation diodes executed.
- Will the interior of the Vehicle is consequently illuminated by the radiation source 121, so occurs the reflected inside the vehicle.
- Infrared radiation through the second lens 107 along the a second beam path 108 into the camera device 10 and reaches the infrared filter 106. Through this filter only infrared radiation can pass through, so that visible Light from inside the vehicle cannot reach camera 100 can.
- the second Deflecting mirror 104 is provided with an adjusting device 30 Mistake. There is only one bracket of this actuator 130 shown in the figure. One electric motor and one Control and a power supply are not located. With the actuator is the second Deflecting mirror 104 about an axis of rotation 131 in a certain Angular range rotatable. This allows the area of Interior can be changed by the second lens 107 and into the camera 100 via the second deflecting mirror is mapped. This is particularly advantageous if a Driver changes his seating position while driving and nevertheless his face part from the camera device 10 to be recorded.
- the sensors 116 are e.g. To list seat sensors that provide information about whether a seat is occupied is. A seat sensor reports that a seat is unoccupied can be checked via the camera whether this is really is the case or whether on the seat e.g. a movement takes place and for this reason the seat is occupied is. In this case, deactivation of a Airbags and / or deactivation of the seat heating. Input elements are also included among the sensors understand with whom e.g. a sleep warning is deactivated if the driver wears sunglasses that his eyes are not visible to the camera 100. The output units include acoustic and / or optical Understand warning elements as speakers, warning lamp or liquid crystal display can be executed.
- the Evaluation unit 113 and control unit 112 can also be used in be integrated into a device. Also controls the control unit 112 via a not shown Connect the position of the second deflecting mirror 104 in Dependency of the second data connection 114 on the Evaluation unit 113 transmitted instructions. Threatens Object that is observed by the camera device 10, to move out of the visible area, so the Computing unit in this way on the regulation of the second Deflect the mirror to adjust the visible area.
- a Connection between the camera device 10 and the Computing unit 110 takes place via the first data connection 111 and the fifth data link 120.
- the first serves Data connection 111 for the transmission of image information from the camera 100 to the computing unit 110, in particular to the evaluation unit 113.
- the fifth data connection 120 is used to control the camera 100 by the computing unit 110, in particular by the control unit 112.
- the first Data link 111 and the fifth data link 120 can also be combined in one data line.
- FIG. 5 shows another one according to the invention Embodiment of the device for monitoring the Vehicle environment and the vehicle interior shown.
- the second beam path 108 the housing of the Camera device 10 already after infrared filter 106.
- this is Housing of the camera device 10 in FIG. 5 only shown in dashed lines.
- Execution allows, on the one hand, the camera device with the cutting plane parallel, but also perpendicular to Arrange the vehicle roof in the vehicle.
- the embodiment is thus one for the vehicle roof vertical arrangement of the camera device 10 of the area the camera except for the opening 109 in the vehicle roof housed while the area of the second Deflecting mirror protrudes into the vehicle interior, i.e. the Cutting plane of the drawing perpendicular to the vehicle roof is arranged. Except for hiring the second Deflecting mirror 104 are used to generate an image in the camera 100 essentially the optical ones Properties of the first lens 101 used.
- FIG. 6 shows a further embodiment of the Device for monitoring the environment of a Vehicle interior shown.
- the camera 100 is in this Embodiment on another side of the first Deflecting mirror 102 arranged as in Figures 4 and 5. In In this case, it follows the first beam path 103 Light through the first deflecting mirror 102 to the camera 100 reflected.
- the second beam path 108 following radiation through the second deflecting mirror 104 deflected such that the radiation the first Deflecting mirror 102, which acts as a semi-transparent mirror is executed, and finally crosses the camera 100 reached.
- the Reflector 123 in the housing of the camera device 10 integrated, which saves space.
- the Radiation source 121 however, also on a cheap one Space far from the camera device 10 in Motor vehicle can be arranged. There are also several Radiation sources possible in the vehicle to ensure optimal To ensure lighting of the vehicle interior.
- FIG. 7 shows a device for carrying out the in of the method described in FIG. 3 shown.
- opening 109 is in the first Beam path 103 an electro-optical light valve in the Execution of a first liquid crystal cell 151 inserted.
- the first liquid crystal cell 151 is via a Drive line 150 from the control unit 112 in the manner controllable that between a transmissive and absorbing state of the first liquid crystal cell 151 can be switched.
- a detailed structure of the Liquid crystal cell and a power supply are in not shown in the drawing.
- the first Liquid crystal cell 151 can be designed in this way be that between two transparent electrodes Liquid crystal is arranged between two glass substrates, depending on an applied electric field the direction of polarization of the light is different affected.
- the glass substrates is therefore dependent on the Transparent electrodes applied voltage absorption or one through the glass substrate, the polarizers and the Liquid crystal predetermined maximum transmission of the Light possible.
- a second liquid crystal cell 153 executed via a control line 152 from the Control unit 112 is switchable and in the second Beam path 108 is arranged.
- the first Method step 31 is now the first liquid crystal cell 151 transparent and the second liquid crystal cell 153 switched absorbent. In this case only that comes out the vehicle surroundings along the first beam path 103 passing light into the camera 100.
- the second Method step 34 is now the first liquid crystal cell 151 absorbent and the second liquid crystal cell 153 switched transmissively.
- FIGS. 8a and 8b show exemplary embodiments of the second deflecting mirror 104 shown.
- a second deflection mirror 1041 concave
- a second deflecting mirror 1042 is convex.
- Either the deflecting mirror 1041 and the deflecting mirror 1042 can can be used as a second deflecting mirror 104.
- Figure 8b one reaches an expansion
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
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Abstract
Description
Hierdurch kann ein Strahlengang z.B. aus dem Innenraum durch Reflektion und ein anderer Strahlengang durch Transmission durch den halbdurchlässigen Spiegel in die Kameravorrichtung eintreten. Eine mechanische Verstellung zwischen den beiden Strahlengängen kann hierdurch entfallen.
Das in der Figur 2c dargestellte Verfahren kann ferner auf die Überwachungslage des Fahrzeugs zu einer Straßenmarkierung übertragen werden, wenn die Erfassung der Bildinformation in der Gesichtspartie des Fahrers durch eine Erfassung der Bildinformation der Straßenmarkierung ersetzt und die Lage des Fahrzeugs zu den Straßenmarkierungen ausgewertet wird.
Das in der Figur 2c beschriebene Auswerteverfahren ist direkt auf die Erste Ausgabe bzw. die zweite Ausgabe 36 in der Figur 3 übertragbar.
Claims (25)
- Verfahren zur Überwachung eines Innenraums und eines Umfelds eines Fahrzeugs, wobei in einem ersten Verfahrensschritt zumindest ein Teil des Umfelds des Fahrzeugs und in einem zweiten Verfahrensschritt zumindest ein Teil des Innenraums des Fahrzeugs mit einer einzigen Kameravorrichtung (10) erfaßt werden, daß der erste und der zweite Verfahrensschritt abwechselnd durchgeführt werden, und daß hierdurch gewonnene Bildinformationen an eine Recheneinheit (110) weitergeleitet und dort verarbeitet werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet daß bei dem zweiten Verfahrensschritt der Innenraum des Fahrzeugs mit einer Strahlungsquelle (121) erhellt wird, die für das menschliche Auge zumindest weitgehend unsichtbar ist, vorzugsweise eine Infrarot-Strahlungsquelle.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß bei dem zweiten Verfahrensschritt der für die Kameravorrichtung (10) sichtbare Teil des Innenraums dem für die Kameravorrichtung (10) sichtbaren Teil des Umfelds des Fahrzeugs überlagert wird und das Bild des Innenraums durch eine Subtraktion des Bildes des Außenraums aus dem ersten Verfahrensschritt ermittelt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei dem ersten Verfahrensschritt nur der für die Kameravorrichtung (10) sichtbare Teil des Umfelds und bei dem zweiten Verfahrensschritt nur der für die Kameravorrichtung (10) sichtbare Teil des Innenraums erfaßt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß über mindestens ein Lichtventil, das vorzugsweise ein elektrooptisches Lichtventil (151, 153) ist, zwischen einer Erfassung des Innenraums und des Umfelds umgeschaltet wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein erfaßtes Bild jeweils nur ein Teilbereich des von der Kamera maximal erfaßbaren Bildes ist, insbesondere Bildzeilen, Bildspalten oder Bildpunkte, daß zwischen der Erfassung des Innenraums und des Umfelds für diese Teilbereiche umgeschaltet wird, daß die erfaßten Teilbereiche durch die Recheneinheit (110) verarbeitet werden und daß anschließend ein nächster Teilbereich erfaßt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gesicht des Fahrers, insbesondere die Augen, erfaßt werden.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Straßenmarkierungen und/oder die Lage des Fahrzeugs zu den Straßenmarkierungen erfaßt werden.
- Verfahren nach einem der Ansprüche 7-8, dadurch gekennzeichnet, daß eine Auswertung des Gesichts des Fahrers und/oder der Lage des Fahrzeugs zu den Straßenmarkierungen jeweils dahingehend durchgeführt wird, ob die Augen des Fahrers geöffnet sind und/oder das Fahrzeug einen vorgegebenen Bereich der Markierungen verläßt, und daß in Abhängigkeit von der Auswertung eine optische und/oder akustische Warnung erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Verkehrszeichen erfaßt werden.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Anzahl der Personen im Fahrzeug und/oder die Sitzplatzbelegung ermittelt wird.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß bei einem leeren Sitzplatz und bei einer Sitzplatzbelegung mit einem Kindersitz eine Auslösung eines zugehörigen Airbags und/oder eine Sitzplatzheizung gesperrt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Lippenbewegungen einer vorgebbaren Person im Fahrzeug, vorzugsweise des Fahrers, zur Unterstützung einer Spracheingabe erfaßt werden.
- Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein Fahrzeug, vorzugsweise ein Kraftfahrzeug, über eine Kameravorrichtung (10) und eine Recheneinheit (110, 112, 113) verfügt, wobei zumindest ein Teil des Innenraums und zumindest ein Teil des Umfeldes eines Fahrzeugs über die selbe Kameravorrichtung (10) erfaßbar sind, daß die Kameravorrichtung (10) mit der Recheneinheit (110, 112) verbunden ist und daß die erfaßten Bilder an die Recheneinheit (110, 113) übertragbar sind.
- Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß ein erster Strahlengang (103) der Kameravorrichtung in Richtung der vor dem Fahrzeug liegenden Fahrbahn und ein zweiter Strahlengang (108) in Richtung des Innenraums, vorzugsweise des Fahrers weist.
- Vorrichtung nach einem der Ansprüche 14-15, dadurch gekennzeichnet, daß eine Beleuchtungseinheit (121) vorhanden ist, die für das Auge zumindest weitgehend unsichtbare Strahlung emittiert, insbesondere Infrarotstrahlung, und die durch die Recheneinheit (110, 112) steuerbar ist.
- Vorrichtung nach einem der Ansprüche 14-16, dadurch gekennzeichnet, daß in der Kameravorrichtung (10), vorzugsweise in dem zweiten Strahlengang (108) in Richtung des Innenraums des Fahrzeugs, ein Infrarotfilter (106) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 14-15, dadurch gekennzeichnet, daß zumindest ein Lichtventil (151, 153), vorzugsweise eine Flüssigkristallzelle, in der Kameravorrichtung (10) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 14-18, dadurch gekennzeichnet, daß in dem Kameravorrichtung (10) mindestens ein Umlenkspiegel (102) angeordnet ist, der vorzugsweise halbdurchlässig ist.
- Vorrichtung nach einem der Ansprüche 14-19, dadurch gekennzeichnet, daß mindestens ein Umlenkspiegel (104) als konkav (1041) oder konvex (1042) ausgeführt ist.
- Vorrichtung nach einem der Ansprüche 14-20, dadurch gekennzeichnet, daß die Kameravorrichtung über eine einzige Kamera (100) verfügt, die vorzugsweise als eine CCD- oder eine CMOS-Kamera ausgeführt ist
- Vorrichtung nach einem der Ansprüche 14-20, dadurch gekennzeichnet, daß die Kameravorrichtung (10) über mindestens zwei Kameras zur stereoskopischen Bilderfassung verfügt.
- Vorrichtung nach einem der Ansprüche 14-22, dadurch gekennzeichnet, daß die Recheneinheit (110, 113) mit optischen Ausgabeeinheiten und/oder akustischen Ausgabeeinheiten (119, 21) verbunden ist zur Warnung des Fahrers, insbesondere bei geschlossenen Augen des Fahrers bzw. einem drohenden Verlassen eines markierten Straßenverlaufs.
- Vorrichtung nach einem der Ansprüche 14-23, dadurch gekennzeichnet, daß die Kameravorrichtung (10) in einem oberen Bereich der Windschutzscheibe (12) angeordnet ist oder in das Dach des Fahrzeugs integriert ist.
- Vorrichtung nach einem der Ansprüche 14-24, dadurch gekennzeichnet, daß zumindest ein Umlenkspiegel (104, 1041, 1042) über eine Stellvorrichtung (130) derart ausrichtbar ist, daß in einem von dem Innenraum des Fahrzeugs durch die Kameravorrichtung (10) erfaßten Bild zumindest die Augen und/oder die Lippen des Fahrers erkennbar sind.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19921488 | 1999-05-08 | ||
| DE19921488A DE19921488A1 (de) | 1999-05-08 | 1999-05-08 | Verfahren und Vorrichtung zur Überwachung des Innenraums und des Umfeldes eines Fahrzeugs |
| PCT/DE2000/001426 WO2000068910A1 (de) | 1999-05-08 | 2000-05-05 | Verfahren und vorrichtung zur überwachung des innenraums und des umfeldes eines fahrzeugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1297511A1 EP1297511A1 (de) | 2003-04-02 |
| EP1297511B1 true EP1297511B1 (de) | 2004-09-15 |
Family
ID=7907575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00941906A Expired - Lifetime EP1297511B1 (de) | 1999-05-08 | 2000-05-05 | Verfahren und vorrichtung zur überwachung des innenraums und des umfeldes eines fahrzeugs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6920234B1 (de) |
| EP (1) | EP1297511B1 (de) |
| JP (1) | JP2002544043A (de) |
| DE (2) | DE19921488A1 (de) |
| WO (1) | WO2000068910A1 (de) |
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| US7995095B2 (en) | 2001-10-18 | 2011-08-09 | Autoliv Development Ab | Night vision device for a vehicle |
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-
1999
- 1999-05-08 DE DE19921488A patent/DE19921488A1/de not_active Ceased
-
2000
- 2000-05-05 WO PCT/DE2000/001426 patent/WO2000068910A1/de not_active Ceased
- 2000-05-05 EP EP00941906A patent/EP1297511B1/de not_active Expired - Lifetime
- 2000-05-05 US US09/743,305 patent/US6920234B1/en not_active Expired - Fee Related
- 2000-05-05 DE DE50007823T patent/DE50007823D1/de not_active Expired - Fee Related
- 2000-05-05 JP JP2000617420A patent/JP2002544043A/ja not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE19921488A1 (de) | 2000-11-16 |
| JP2002544043A (ja) | 2002-12-24 |
| US6920234B1 (en) | 2005-07-19 |
| EP1297511A1 (de) | 2003-04-02 |
| DE50007823D1 (de) | 2004-10-21 |
| WO2000068910A1 (de) | 2000-11-16 |
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