WO1996010817A1 - Ultraschallsensor - Google Patents
Ultraschallsensor Download PDFInfo
- Publication number
- WO1996010817A1 WO1996010817A1 PCT/DE1995/001338 DE9501338W WO9610817A1 WO 1996010817 A1 WO1996010817 A1 WO 1996010817A1 DE 9501338 W DE9501338 W DE 9501338W WO 9610817 A1 WO9610817 A1 WO 9610817A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ultrasonic
- sensor according
- ultrasonic sensor
- ultrasound
- rotation
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/002—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle
- B60Q9/004—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors
- B60Q9/006—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors using a distance sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
- F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
- F16P3/141—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using sound propagation, e.g. sonar
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/001—Vehicles particularly adapted for collecting refuse for segregated refuse collecting, e.g. vehicles with several compartments
- B65F2003/003—Footboards
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
- G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
- G01S2015/939—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details vertical stacking of sensors, e.g. to enable obstacle height determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
- G01S7/526—Receivers
- G01S7/527—Extracting wanted echo signals
Definitions
- the invention relates to an ultrasonic sensor for scanning a spatial area and / or for contactless distance measurement with at least one ultrasonic transducer for transmitting ultrasonic pulses and / or receiving the echo of the ultrasonic pulses and a device for concentrating the energy of the ultrasonic pulses on the area to be scanned or the energy of the Echoes of the ultrasound impulses on the ultrasound transducer
- An ultrasound sensor comprises, for example, at least one ultrasound transducer which converts electrical energy into sound and vice versa sound into electrical energy, a housing surrounding the ultrasound transducer, an electrical connection and, if appropriate, an electronic circuit built into the housing for signal processing
- an ultrasonic sensor In order to scan a spatial area or to measure the distance between two points, an ultrasonic sensor is conventionally attached to a suitable point and to determine the distance from a reference point to the relevant spatial area which is to be scanned or in which a body to be detected is located
- the ultrasound sensor has an ultrasound transducer which transmits ultrasound impulses and possibly receives the echo of the ultrasound impulses reflected by the body.
- the distance between the ultrasound sensor and the one in the scanned area can be evaluated by means of an evaluation circuit
- Body located in the spatial area can be determined (echo propagation time measurement).
- an ultrasound transducer instead of an ultrasound transducer, several ultrasound transducers can also be used, the function of the respective ultrasound transducer being limited to the transmission of the ultrasound pulses or to the reception of the echo of the ultrasound pulses
- An ultrasonic sensor is known from DE 42 18 041 AI.
- the Distance measurement has at least one ultrasound transducer for transmitting a sound work pulse and for receiving the echoes.
- the ultrasound transducer is surrounded by a sound deflection surface onto which the ultrasound pulses from the ultrasound transducer are radiated.
- a further ultrasound transducer is housed in the sound deflection surface with a downstream evaluation unit the task of checking the proper functioning of the ultrasonic transducers. written sound deflection surface, the sound field is essentially only deflected, but the sound field is not shaped and directed in a defined manner
- ultrasonic sensors have the disadvantage for certain applications that their sound field is rotationally symmetrical.
- Such ultrasonic sensors are installed, for example, in or on the rear bumper of a passenger car in order to show the driver possible obstacles behind the vehicle when reversing.
- the ultrasonic sensors are used generally controlled by a central control unit which controls the sensors and evaluates the echo signals.
- the driver is given an optical and / or acoustic signal.
- the ultrasonic sensors should cover the area behind the vehicle across the entire width of the vehicle Scanning to a distance of e.g.
- the object of the invention is to provide an ultrasonic sensor with a defined asymmetrical radiation characteristic and a device for checking the proper functioning of the ultrasonic sensors, as well as to provide useful uses of the ultrasonic sensors.
- the transmission and reception characteristics should have sharp contours
- the ultrasonic sensor in the case of room monitoring In motor vehicles, in particular in the case of external space monitoring, the sound field emitted is designed such that the detection area on its side facing the floor surface runs essentially parallel and allows sufficient ground clearance.
- the dimensions of the ultrasonic transducer should also be small in order to be installed in to enable a wide variety of locations without, as is customary, noteworthy modifications or adaptations of the locations to the ultrasonic sensor.
- the invention relates to an ultrasound sensor for scanning a room area and / or for contactless distance measurement with at least one ultrasound transducer for sending ultrasound pulses and / or receiving the echo of the ultrasound pulses and a device for concentrating the energy of the ultrasound pulses on the area or energy to be scanned the echo of the ultrasound pulses on the ultrasound transducer or transducers, which is characterized in that the device for concentrating the energy of the ultrasound pulses has a reflector with a reflecting surface which is formed from parabolic surfaces of the n-th order, preferably second-order
- the present invention relates to a motor vehicle which is characterized in that the motor vehicle has one or more of the ultrasonic sensors according to the invention
- Another object of the present invention is directed to the use of the ultrasonic sensors according to the invention as a monitoring device in and / or outside of premises of motor vehicles or commercial vehicles, in particular industrial trucks, and buildings.
- Another object of the present invention relates to the use of the ultrasonic sensors according to the invention as a running board monitoring device for motor vehicles or commercial vehicles, in particular refuse collection vehicles, and as a monitoring device on doors and gates Further details, aspects and advantages of the present invention will become apparent from the following description with reference to the drawings. Due to the simplification of the drawing, they show the perspective representation of the outer segment of the invention according to the invention in a schematic, greatly enlarged manner without claiming to a true-to-scale reproduction
- FIG. 2 shows the schematic plan view of the inner segment of the ultrasound sensor according to the invention
- Fig. 3 is a schematic side view of the inner segment of the ultrasonic sensor according to the invention.
- Fig. 4 is a perspective view of the inner segment of the ultrasonic sensor according to the invention
- FIG. 5 shows the perspective view of the central piece of the ultrasonic sensor according to the invention.
- FIG. 6 shows the top view of the ultrasonic sensor according to the invention with two outer ones
- Fig. 7 is a perspective view of the ultrasonic sensor according to the invention with two outer segments, an inner segment and an ultrasonic transducer
- FIG. 8 shows the top view of the ultrasonic sensor according to the invention with two outer segments, two inner segments, a middle piece and two ultrasonic transducers
- FIG. 9 shows the perspective illustration of the ultrasonic sensor according to the invention with two outer segments, two inner segments, a central piece and two ultrasonic transducers
- 11 shows the vertical detection range of the ultrasonic sensor according to the invention, measured with an approximately 150 cm long tube with a diameter of 7 cm
- 15 shows examples of the attachment of the ultrasonic sensors according to the invention to a passenger car for securing to the front, to the side and / or to the rear
- the device for concentrating the energy of the ultrasound pulses can be controlled with respect to the concentration of the energy of the ultrasound pulses on a space area to be scanned or the energy of the echo of the ultrasound pulses on the ultrasound transducer or transducers.
- concentration of the energy of the emitted and, if appropriate, of the ultrasonic pulses reflected by a body, and thus possibly the sensitivity of the ultrasound sensor changes
- the ultrasound sensor according to the invention has such an asymmetrical radiation characteristic when the sound field is spread out in the horizontal plane and strongly bundled in the vertical plane
- the device for concentrating the energy of the ultrasonic pulses has a reflector, the reflecting surface of which is designed as a parabolic surface of the n-th order, preferably of the second order and possibly the ultrasound pulses reflected by a body are concentrated on a specific area
- the reflector can be designed mirror-symmetrically.
- the variation of the width of the scanning area is achieved in an effective manner in that the reflector has several segments which are movable with respect to one another and whose position can be changed relative to one another
- the main advantage of the invention is the asymmetrical sound field in the ratio horizontal / vertical plane (Fig. 10 and Fig. 1 1) which was not previously considered possible.
- the ultrasound sensor according to the invention is arranged in the origin of the coordinate system.
- An evaluation electronics operates the ultrasound sensor according to the echo propagation time method.
- the evaluation electronics gives an output signal when the reflector object (here a tube 1.50 m long with a diameter of 7 cm) is recognized by the ultrasonic sensor.
- the gray area indicates the area within which this reflector is recognized by the ultrasonic sensor. Bring two or three of the ultrasonic sensors according to the invention to the rear of a motor vehicle in such a way that the horizontal detection areas completely and completely illuminate the entire vehicle width (FIG.
- the design of the ultrasonic sensor according to the invention also enables sharp contours both in the horizontal and in the vertical plane of the detection areas, so that interference reflections beyond the areas of the asymmetrical detection area are avoided
- ultrasound transducers are used in the ultrasound sensor instead of a single ultrasound transducer to send the sound pulse and to receive the echo signals, this can be done a) the typical close-up range of ultrasonic sensors, which operate in echo pulse mode, is advantageously reduced, and b) according to the invention, a method is used to check the functional humidity of the ultrasonic transducers.
- Another advantageous method for monitoring the ultrasonic transducers results from the utilization of the wide detection ranges of the ultrasonic sensors in the horizontal plane in such a way that mutual monitoring can take place with a suitable arrangement of at least two ultrasonic sensors according to the invention
- An inner segment 17 of the reflector, the reflecting surface 9 of which is designed as a paraboloid surface, is laterally connected to the outer reflector segments 14a, 14b (FIGS. 6 and 7), the reflecting surfaces 2 of which are designed as paraboloid surfaces that rotate Outer segments 14a, 14b advantageously have reflecting surfaces 2 as cutouts of 50 to 120 °, preferably 90 °, essentially from a paraboloid of revolution with the focal point 4, which by rotating the parabola with an angle of rotation ⁇ about its axis of rotation 1 arises, with a straight line intersecting the axis of rotation 1 in the focal point 4 touching the parabola in the projected focal point 3 (FIGS. 1 and 7).
- the reflecting surface 9 of the inner surface can be
- Segments 17 that part of the surface which is formed by rotating a parabola about the axis 10, which corresponds to the straight line which is perpendicular to the axis of symmetry 15 of the parabola in the focal point 11 of the parabola and intersects the parabola in the projected focal point 31 (FIG 2, 3, 4) It is advantageous if the reflecting surface 9 starts from the projected focal point 31 of the vertical projection of the focal point 11 and extends in one direction away from the apex
- the parabola can be rotated about the axis 10 with the angle of rotation ⁇ (FIGS. 3 and 4).
- the angle of rotation ⁇ corresponds to an amount 8 of the opening angle ⁇ from 0 to 180 ", preferably from 0 to 90 °, preferably from 25 to 45 °
- the rotation angle ⁇ is particularly preferred if it corresponds to the amount 8 of the opening angle ⁇ 30, 35 or 40 °
- the outer segments 14a, 14b are arranged with the inner segment 17 such that the focal points 4, 11 coincide and the projected focal points 3, 31 coincide, the reflecting surfaces 2, 9 of the outer segments 14a, 14b and the inner segment 17 form an essentially continuous surface.
- Continuous surface also means, for example, a smooth surface without unevenness that disturbs the reflection.
- the opening angle of the sound lobe of the ultrasound transducer 12 is 5 to 120 °, preferably 50 to 80 °, more preferably 60 °
- the inner segment 17 can be designed to be spreadable, the outer segments 14a, 14b about a common axis 85, which run through the focal points 4, 11 and the projected focal points 3, 31 can be pivoted with an angle of rotation ß It is possible if the angle of rotation ß corresponds to the amount 8 of the opening angle ⁇ of the inner segment 17. As a result, the detection range of the ultrasonic sensor can be changed as required in a horizontal plane as required (FIG. 7)
- the reference symbols 80 stand for the back, 82 for the top and 81 for the bottom of the ultrasonic sensor according to the invention
- the reflector 90 can have two outer segments 14a, 14b, two inner segments 17 and a central piece 18 (FIGS. 8 and 9), the central piece 18 having a reflective surface 7, which is part of a Paraboloid surface is formed, which is formed by linear horizontal displacement of a vertically aligned parabola, the axis of symmetry 16 of which extends horizontally (FIG. 5).
- the straight line 5 connects the focal point 71 of the original parabola — which is not displaced — with the focal point 71 of the horizontally shifted parabola
- Line 6 connects the projected focal point 32 of the original - i.e. not shifted - parabola with the projected focal point 32 of the horizontally shifted parabola
- a straight line 70 which is perpendicular to the axis of symmetry 16 at the focal point 71 of the parabola, intersects the parabola in the projected focal point 32. It is possible for the middle piece 18 to be arranged in this way with one of the inner segments 17 and one of the outer segments 14a is that the focal points 4, 11, 71 coincide and the projected focal points 3, 31, 32 coincide, the reflecting surface 2 of the outer segment 14a, the reflecting surface 9 of the inner segment 17 and the reflecting surface 7 of the center piece 18 being one form a substantially continuous surface
- the middle piece 18 can be arranged with the other of the inner segments 17 and the outer segments 14b such that the focal points (4, 11, 71) coincide and the projected focal points (3, 31, 32) coincide, the reflecting ones Surface 2 of the outer segment 14b, the reflecting surface 9 of the inner segment 17 and the reflecting surface 7 of the middle piece 18 form a substantially continuous surface
- the middle piece 18 can be made significantly elongated along the straight line 6 and the length the straight line 6 is a multiple of the length of the straight line which intersects the points 71 and 16 (FIG. 5).
- two ultrasound transducers 12 are arranged in an ultrasound sensor, a first ultrasound transducer 12 sending the ultrasound pulses and a second ultrasound transducer 12 receiving the echo of the ultrasound pulses.
- the functional specialization of the ultrasound transducers 12 increases the acoustic efficiency of the ultrasound sensor because the ultrasonic transducers can be optimized for the corresponding tasks "sending" and "receiving", and the typical dead zone of ultrasonic sensors can be reduced. For example, since motor vehicles have different widths, the detection ranges of the ultrasonic sensors must be adapted to these dimensions can now already be taken into account with two ultrasound sensors with the corresponding setting of the two outer segments 14a and 14b, without - as is conventional - a special ultrasound sensor having to be manufactured
- the ultrasonic transducers 12 are arranged with their active surface 13 in such a way that the center of their active surfaces 13 coincides with the focal points 4, 11, 71, the main beam direction of the ultrasonic transducers 12 pointing to the projected focal points 3 , 31, 32 can be directed.
- the ultrasonic sensor according to the invention can, for example, be coupled to a motor vehicle in such a way that either the underside 81, that is to say the side which is opposite the ultrasonic transducer (s) 12, or to the upper side 82, that is to say the side on which the or the Ultrasonic transducers 12 are located, facing the bottom surface in the case of the arrangement of the ultrasonic sensor according to the invention with the upper side 82 facing the floor surface, the lower side of the
- the inner segments 17 are designed to be spreadable, the outer segments 14a, 14b having an angle of rotation about an axis 86, which runs through the focal points 4, 11, 71 and the projected focal points 3, 31, 32, respectively ⁇ are pivotable (Fig. 9)
- the angle of rotation ⁇ can correspond to the amount 8 of the opening angle ⁇ of the inner segment 17 in question
- the frequency range of the ultrasound transducers used in the ultrasound sensor according to the invention is preferably between 20 to 200 kHz, preferably 30 to 50 kHz, preferably 33 and 40 kHz.
- the depth t of the reflecting surface has a value that is a multiple of the wavelength of the ultrasound frequency used in one embodiment the depth t of the reflecting surface preferably corresponds to two to twenty times the wavelength of the ultrasound frequency used, preferably two to ten times, particularly preferably three to five times
- the depth t of the reflecting surface is the distance between the vertex of the parabola (edge 18a in FIG. 5) and the intersection of the axis of symmetry 16 with the straight line 16a.
- the straight line 16a intersects the lower edge 18b of the paraboloid surface (FIG. 5)
- the roughness of the surface of the reflector 90 should be such that it is at least below the wavelength with which the ultrasound transducers are operated. It is also possible to approximate the paraboloid surfaces by a plurality of small surface segments
- the ultrasonic sensor according to the invention opens up a wide range of different uses due to the fact that it is no longer necessary is that different ultrasound sensors for different purposes must have different designs, arrangements of ultrasound transducers etc., but one ultrasound sensor is sufficient to meet all requirements of the most varied monitoring areas, eg variation of the detection area, accuracy and sharpness of the contour of the transmitting and receiving lobes, ubiquitous use in many industrial and private areas is opened up for small dimensions etc., quite apart from the fact that the production costs can be greatly reduced because an ultrasound is then used nsor is sufficient to meet the needs of all relevant areas with regard to cost-effective monitoring options.
- the ultrasonic sensors according to the invention can be used as a footboard monitoring device for motor vehicles or commercial vehicles, in particular gull vehicles, as a monitoring device in or outside of premises, with Premises such as buildings and passenger compartments of motor vehicles are to be understood.
- All segments of the reflector are combined to form a body with a contiguous inner contour, the inner surface of which is continuously inclined inwards active surface of the reflector forms.
- the inner segments 17 are designed to be spreadable, and the position of the outer segments 14a, 14b can be changed with respect to the position of the inner segments 17 as a function of the expansion.
- the outer segments 14a, 14b are pivoted open or closed by the angle of rotation ⁇ or ⁇ , the coherent inner contour of the inwardly inclined inner surface of the reflector is essentially retained
- the ultrasound sensor can also be constructed with segments which are fixedly arranged with respect to one another, if the attachment location and the area to be scanned are known from the start. This then allows a very inexpensive design of the ultrasonic sensor.
- a motor vehicle can have one or more ultrasonic sensors according to the invention
- the ultrasound sensor according to the invention can be connected to a control device Control, monitoring of the ultrasound transducer 12 as well as the reception and amplification of the echo signals, evaluation device for evaluating the converted pulses of the ultrasound transducer 12, display device for displaying the determined values and / or transmission device.
- acoustic and / or or optical ones are used. If several ultrasonic sensors are used, these can be coupled to a downstream device or central control device in order to avoid mutual interference between the ultrasonic transducers or sensors Attention synchronizes all connected ultrasonic transducers or sensors and processes the signals. Experience has shown that it is extremely advantageous to first process the very weak echo signals electronically directly on the ultrasound transducer and to forward the amplified echo signals to the central control device. It is also sensible to generate the transmission pulse in the vicinity of the ultrasound transducer and that thus the central control device only sends a trigger pulse to the connected ultrasonic sensors.
- an electronic circuit is therefore already built into the ultrasonic sensor according to the invention, which generates the transmission pulse from an external trigger signal and which processes the weak echo signals in such a way that they are easily forwarded to a central control device over longer cable lengths (electronic and electrical connections are shown in the drawings) not shown for clarity)
- the draft standard DIN 75 031 of May 1993 stipulates, among other things, that maneuvering warning devices continuously monitor the ultrasonic sensors and immediately notify the driver of an ultrasonic sensor visually and acoustically. In the course of the manufacturer's increased product liability, monitoring of the ultrasonic sensors is also advisable a parking aid for cars desirable
- the ultrasound transducers can advantageously be monitored from the central control device by the following method It is known that in the case of echo delay measurement, the electronic amplifier for the echo signals must increase its amplification factor with increasing distance between the ultrasound sensor and reflectors - or with increasing echo delay time. For this reason, amplifiers which are controlled according to the prior art are preferably used for such tasks the ultrasound sensor should therefore be checked when the echo amplifier has reached its maximum sensitivity
- this transmit pulse can be radiated and received directly into the receive transducer via the reflector surface 90 according to the invention.
- the control device can therefore individually check for each ultrasonic transducer whether at maximum sensitivity the echo amplifier of this test pulse was received by the receive transducers
- an echo amplifier does not deliver a signal after stopping the test pulse, either an error has occurred in the transmission path (e.g. the transmission transducer has not emitted any sound pulse) or the reception path has failed (the ultrasound sensor is no longer able to evaluate echo signals)
- the method according to the invention can also detect a cable break or a short circuit in the feed lines to the ultrasound sensors. It is advantageous that the test method according to the invention can be integrated into the ongoing ultrasound measurements Ultrasonic measurement the ultrasonic sensors are checked
- the method for sensor monitoring using at least two ultrasonic sensors according to the invention is characterized in that at least two ultrasonic sensors with one or more ultrasonic transducers 12 in motor vehicles or commercial vehicles are aligned with one another such that the Ultrasound limpulse of one ultrasound sensor is received by the other ultrasound sensor without reflection in the direct beam, a sound pulse is emitted as a test pulse by an ultrasound transducer 12 of the one ultrasound sensor and is evaluated by an evaluation device. is checked whether an ultrasonic transducer 12 of the other ultrasonic sensor has received the sound pulse after the sound propagation and vice versa
- this method can also be used with ultrasound sensors that only work with an ultrasound transducer. This method can be used particularly when using the ultrasound sensors as a parking aid or maneuvering warning device for motor vehicles
- the rear area of a vehicle can be scanned completely with two ultrasound sensors.
- two of the ultrasound sensors according to the invention are attached to the left and right outside of the vehicle.
- the two ultrasound sensors are preferably aligned with each other in the top view of the horizontal detection area (Fig. 13), i.e. inclined inwards until the outer areas of the detection areas run approximately parallel to the outer edge of the vehicle (Fig. 13).
- the horizontal opening angle of the ultrasonic sensors according to the invention is now sufficiently large , the ultrasound sensors are now radiating each other.
- the control unit now controls the two ultrasound sensors alternately.
- the control device can even check whether the sensors are attached to the vehicle at the correct distance from one another irradiated sound pulse received, either the left ultrasound sensor has emitted no pulse at all, or the right ultrasound sensor can not receive a sound pulse, or there is a larger object between the two ultrasound sensors
- the test is of course also carried out in the opposite direction by the control unit. Then the right ultrasound sensor emits its sound pulse and the left ultrasound sensor is checked for receipt of the directly irradiated pulse.
- This test method also covers a short circuit and a cable break in the cabling between the control unit and connected ultrasonic sensors This test method can of course also be extended to three and more ultrasound sensors. It is important that the ultrasound sensors to be tested against one another "see" each other in the direct beam.
- the ultrasound sensor according to the invention can be attached to the rear side, front side, driver side and / or passenger side for scanning or detecting the spatial areas around a vehicle, e.g. there are one or more ultrasound sensors according to the invention in at least one bumper and, for example, the visible surface of the ultrasound sensors form an essentially continuous surface with the visible surface of the bumper.
- the ultrasound sensor according to the invention can be used in at least one rear light, a front light, in a reflector of the rear light and / or the front light, in and / or on at least one representative of the fenders, driver's door, passenger door and side part, for example Group comprising sills can be attached (FIGS. 13, 14 and 15)
- the ultrasound sensors according to the invention can also be integrated into the vehicle design in a manner similar to conventional lighting devices. It is even conceivable to combine the ultrasound sensors according to the invention, for example, with the tail lights or to integrate into the rear lights in a motor vehicle.
- the ultrasound sensor according to the invention can be arranged such that the ultrasound sensor is rotatably mounted with its rear side 80 about an axis which is preferably essentially perpendicular to the surface of the part of the motor vehicle to be provided with the ultrasound transducer the underside 81 of the ultrasonic sensor according to the invention may be oriented perpendicularly or horizontally to the floor surface
- ultrasound sensors according to the invention are attached to a commercial vehicle both below the bumper and at vehicle height on the right and left such that their upper sides 82 are aligned with the floor surface or with the side facing away from the floor surface.
- the lower, facing the floor surface Side of the detection area of the ultra- Sound sensors run almost parallel to the floor surface. That means that the low curb or objects lying on the floor surface at a lower height do not reflect the ultrasound transmission pulse.
- the transmitting and receiving lobes are characterized by a sharp contour.
- ultrasound sensors are already sufficient to cover the entire rear monitoring area of the vehicle. In contrast to conventional ultrasound sensors, there is therefore no need to install four to six conventional ultrasound sensors over the entire width of the vehicle along the bumper or bumper
- the ultrasonic sensors according to the invention have a reflector 90 with a reflecting surface, which consists of paraboloid surfaces of the second order with two outer segments 14a, 14b, two inner segments 17 and a central piece 18.
- the outer segments 14a, 14b have 2 cutouts as reflecting surfaces 90 ° essentially from a paraboloid of revolution with the focal point 4, which arises from the rotation of the parabola with an angle of rotation ⁇ about its axis of rotation 1, a straight line intersecting the axis of rotation 1 at the focal point 4 touching the parabola at the projected focal point 3
- Surface 9 of the inner segments 17 is designed as a paraboloid surface and is the part of the surface which is formed by rotating a parabola about the axis 10 which corresponds to the straight line which is perpendicular to the axis of symmetry 15 of the parabola at the focal point 11 of the parabola Parabola stands and the parabola at the projected focal point 31 intersects
- Das Mitte Piece 18 has a reflecting surface 7, which is designed
- the middle piece 18 is designed such that a straight line 70, which is vertical stands on the axis of symmetry 16 on the focal point 71 of the parabola, which intersects the parabola in the projected focal point 32.
- the central piece 18 is arranged with one of the inner segments 17 and one of the outer segments 14a such that the focal points 4, 11 , 71 coincide and the projected focal points 3, 31, 32 coincide, the reflecting surfaces 2, 9, 7 of the outer 14a and the inner 17 segment and the middle piece 18 forming an essentially continuous area.
- the middle piece 18 is with the another of the inner segments 17 and the other of the outer segments 14b arranged such that the focal points 4, 11, 71 together fall and the projected Focal points 3, 31, 32 coincide, the reflecting surfaces 2, 9, 7 of the outer 14b and the inner 17 segment and the central piece 18 forming an essentially continuous surface.
- the two ultrasonic transducers 12 are arranged with their active surface such that the The center of their active surfaces 13 coincides with the focal points 4, 1 1, 71
- the angle of rotation ⁇ is 90 °.
- the angle of rotation ⁇ which corresponds to the amount 8 of the opening angle ⁇ of the inner segments 17, is 17.5 °.
- the two outer segments 14a, 14b, the two inner segments 17 and the middle piece 18 are made of one Plastic material produced, here polyurethane. Bending oscillators of closed design with an ultrasonic frequency of 40 kHz are used as ultrasonic transducers.
- the surface roughness of the reflector 90 is more than a factor 10 below the wavelength ⁇ of the used ultrasonic frequency
- the ultrasonic sensors according to the invention mounted at vehicle height enable, due to their asymmetrical detection range, that objects located a short distance above the vehicle roof do not reflect the transmission impulses and therefore do not give the user the wrong impression that objects at the vehicle height are disturbing.
- These ultrasonic sensors are provided as upper edge protection Of course optional. You should make it clear here that further ultrasound sensors may be arranged on a second level in order to achieve a desired result
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Transportation (AREA)
- Human Computer Interaction (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU35611/95A AU3561195A (en) | 1994-09-30 | 1995-09-26 | Ultrasound sensor |
US08/817,793 US5869764A (en) | 1994-09-30 | 1995-09-26 | Ultrasonic sensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4435156A DE4435156C2 (de) | 1994-09-30 | 1994-09-30 | Ultraschallsensor |
DEP4435156.9 | 1994-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996010817A1 true WO1996010817A1 (de) | 1996-04-11 |
Family
ID=6529734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/001338 WO1996010817A1 (de) | 1994-09-30 | 1995-09-26 | Ultraschallsensor |
Country Status (4)
Country | Link |
---|---|
US (1) | US5869764A (de) |
AU (1) | AU3561195A (de) |
DE (1) | DE4435156C2 (de) |
WO (1) | WO1996010817A1 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2337330A (en) * | 1998-05-14 | 1999-11-17 | Virtual Ink Corporation | Transcription system |
US6100877A (en) * | 1998-05-14 | 2000-08-08 | Virtual Ink, Corp. | Method for calibrating a transcription system |
US6104387A (en) * | 1997-05-14 | 2000-08-15 | Virtual Ink Corporation | Transcription system |
US6111565A (en) * | 1998-05-14 | 2000-08-29 | Virtual Ink Corp. | Stylus for use with transcription system |
US6177927B1 (en) | 1998-05-14 | 2001-01-23 | Virtual Ink Corp. | Transcription system kit |
US6191778B1 (en) | 1998-05-14 | 2001-02-20 | Virtual Ink Corp. | Transcription system kit for forming composite images |
US6211863B1 (en) | 1998-05-14 | 2001-04-03 | Virtual Ink. Corp. | Method and software for enabling use of transcription system as a mouse |
US6310615B1 (en) | 1998-05-14 | 2001-10-30 | Virtual Ink Corporation | Dual mode eraser |
WO2006034380A1 (en) * | 2004-09-23 | 2006-03-30 | Crown Equipment Corporation | Rotating and swiveling seat |
CN108802739A (zh) * | 2018-05-31 | 2018-11-13 | 深圳臻迪信息技术有限公司 | 一种水下障碍物探测方法及探测装置 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19747799B4 (de) * | 1997-10-30 | 2005-12-29 | Robert Bosch Gmbh | Verfahren für die Erhöhung der Reichweite von Sensoren |
EP1093567B1 (de) * | 1998-07-09 | 2004-10-20 | Siemens Aktiengesellschaft | Anordnung und verfahren zur ermittlung einer relativen lage zweier objekte |
DE19831262C2 (de) * | 1998-07-11 | 2002-09-19 | Wabco Gmbh & Co Ohg | Einrichtung zur Unterstützung des Fahrers eines Nutzfahrzeuges bei Rückwärtsfahrt |
US6392327B1 (en) | 2000-03-29 | 2002-05-21 | James L. Sackrison | Sonic transducer and feedback control method thereof |
DE10134070A1 (de) * | 2001-07-13 | 2003-01-23 | Valeo Schalter & Sensoren Gmbh | Abstandmesssystem |
DE10146249A1 (de) * | 2001-09-20 | 2003-04-17 | Valeo Schalter & Sensoren Gmbh | Verfahren zur Steuerung eines Nahbereichserkennungssystems für Fahrzeuge sowie Nahbereichserkennungssystem |
DE20116591U1 (de) | 2001-10-10 | 2002-01-24 | Siemens AG, 80333 München | Einrichtung zur Erfassung der Position einer Leiterplatte |
US7047132B2 (en) * | 2004-01-12 | 2006-05-16 | Steven Jacobs | Mobile vehicle sensor array |
US7167415B2 (en) * | 2004-09-15 | 2007-01-23 | Packaging Technologies & Inspection Llc | Transducers for focusing sonic energy in transmitting and receiving device |
FR2906372B1 (fr) * | 2006-09-21 | 2010-06-18 | Derisys | Dispositif d'aide a la conduite d'un vehicule automobile |
DE102008040905A1 (de) * | 2008-07-31 | 2010-02-04 | Robert Bosch Gmbh | Ultraschallsensor |
US20100265100A1 (en) * | 2009-04-20 | 2010-10-21 | Lsi Industries, Inc. | Systems and methods for intelligent lighting |
DE102010032909A1 (de) | 2010-07-30 | 2012-02-02 | Wabco Gmbh | Überwachungssystem zur Überwachung des Umfeldes, insbesondere des Rückraumes von Kraftfahrzeugen |
DE102014207917B4 (de) | 2013-08-07 | 2018-07-05 | Mitsubishi Electric Corporation | Fahrzeug-verbauter Ultraschallsensor |
FR3017086A1 (fr) * | 2014-02-04 | 2015-08-07 | Peugeot Citroen Automobiles Sa | Platine de support montee dans l'avant-train d'un vehicule automobile integrant un avertisseur sonore. |
JP6557958B2 (ja) * | 2014-10-22 | 2019-08-14 | 株式会社Soken | 車両用障害物検出装置 |
JP6528382B2 (ja) * | 2014-10-22 | 2019-06-12 | 株式会社Soken | 車両用障害物検出装置 |
DE102014222076A1 (de) * | 2014-10-29 | 2016-05-04 | Robert Bosch Gmbh | Objektmerkmale auf Signalform codiert |
ITUB20159625A1 (it) * | 2015-12-16 | 2017-06-16 | Scm Group Spa | Apparato di Lavorazione |
ITUB20159437A1 (it) * | 2015-12-16 | 2017-06-16 | Scm Group Spa | Apparato di Lavorazione |
DE102019113507A1 (de) * | 2019-05-21 | 2020-11-26 | Zöller-Kipper GmbH | Sammelbehälter, Müllfahrzeug und Verfahren zur Überwachung eines Beschickungsbereichs |
JP7372962B2 (ja) * | 2020-10-16 | 2023-11-01 | Jfeスチール株式会社 | パラボラアンテナ、音源表示装置および音源表示方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE182550C (de) * | ||||
US4104610A (en) * | 1975-12-15 | 1978-08-01 | Matsushita Electric Works, Ltd. | Ultrasonic wave horn |
GB2131642A (en) * | 1982-12-01 | 1984-06-20 | Daimler Benz Ag | Obstacle detection; vehicle parking aid |
WO1984004589A1 (en) * | 1983-05-19 | 1984-11-22 | Xecutek Corp | Efficient low cost transducer system |
EP0355490A2 (de) * | 1988-08-16 | 1990-02-28 | Robert Bosch Gmbh | Kollisionswarneinrichtung für Kraftfahrzeuge |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3842397A (en) * | 1973-08-27 | 1974-10-15 | T Sindle | Ultrasonic distance detection for vehicles |
DE2529155C3 (de) * | 1975-06-30 | 1978-03-23 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Ultraschallapplikator für die Ultraschallabtastung von Körpern |
DE2744823C3 (de) * | 1977-10-05 | 1980-06-12 | G.H. Endress & Co, Basel (Schweiz) | Sende-Empfangsanordnung fur Schalloder Ultraschallwellen fur die Abstandsmessung nach dem Echolotprinzip |
FR2472803A1 (fr) * | 1979-12-27 | 1981-07-03 | Bertin & Cie | Procede d'adaptation des antennes d'un radar acoustique et dispositif pour la mise en oeuvre de ce procede |
DE3036081A1 (de) * | 1980-09-25 | 1982-04-29 | Egon Gelhard | Verfahren zur distanzmessung nach dem ultraschall-echoprinzip sowie schaltungsanordnung und geraete insbesondere am kraftfahrzeug |
JPS5991381A (ja) * | 1982-11-17 | 1984-05-26 | Nippon Soken Inc | 車両用後方障害物表示装置 |
DE3320935A1 (de) * | 1983-06-09 | 1984-12-13 | Siemens AG, 1000 Berlin und 8000 München | Ultraschall-sensor |
JPS60173996A (ja) * | 1984-02-17 | 1985-09-07 | Nippon Soken Inc | 超音波送受波器 |
GB2167557B (en) * | 1984-10-11 | 1988-07-20 | Fisco Electronics | Distance sensing |
US4791430A (en) * | 1986-06-12 | 1988-12-13 | Agtronics Pty. Limited | Ultrasonic antenna |
DE3730105A1 (de) * | 1987-09-08 | 1989-03-16 | Pietzsch Ibp Gmbh | Verfahren und einrichtung zum sichern eines im raum beweglichen fahrzeugs oder geraets |
ATE89927T1 (de) * | 1987-10-19 | 1993-06-15 | Siemens Ag | Ueberwachungseinrichtung fuer rueckwaertsfahrtsicherungen bei fahrzeugen. |
DE8716808U1 (de) * | 1987-12-22 | 1988-04-07 | Storm GmbH, 8265 Neuötting | Kraftfahrzeugblende |
US4931930A (en) * | 1988-04-19 | 1990-06-05 | Industrial Technology Research Institute | Automatic parking device for automobile |
IT1224041B (it) * | 1988-12-29 | 1990-09-26 | Carello Spa | Gruppo ottico per veicoli con sensore ad ultrasuoni incorporato |
DE3905099C1 (de) * | 1989-02-20 | 1990-08-09 | Schoeller Transportautomation Gmbh, 5120 Herzogenrath, De | |
DE4030607A1 (de) * | 1990-09-27 | 1992-04-16 | Siemens Ag | Nach dem radarprinzip konzipiertes ueberwachungssystem zur ueberwachung eines objektes |
DE4218041C2 (de) * | 1992-06-01 | 1999-02-04 | Microsonic Ges Fuer Mikroelekt | Ultraschallsensor mit Funktionsüberwachung |
-
1994
- 1994-09-30 DE DE4435156A patent/DE4435156C2/de not_active Expired - Lifetime
-
1995
- 1995-09-26 US US08/817,793 patent/US5869764A/en not_active Expired - Lifetime
- 1995-09-26 WO PCT/DE1995/001338 patent/WO1996010817A1/de active Application Filing
- 1995-09-26 AU AU35611/95A patent/AU3561195A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE182550C (de) * | ||||
US4104610A (en) * | 1975-12-15 | 1978-08-01 | Matsushita Electric Works, Ltd. | Ultrasonic wave horn |
GB2131642A (en) * | 1982-12-01 | 1984-06-20 | Daimler Benz Ag | Obstacle detection; vehicle parking aid |
WO1984004589A1 (en) * | 1983-05-19 | 1984-11-22 | Xecutek Corp | Efficient low cost transducer system |
EP0355490A2 (de) * | 1988-08-16 | 1990-02-28 | Robert Bosch Gmbh | Kollisionswarneinrichtung für Kraftfahrzeuge |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6104387A (en) * | 1997-05-14 | 2000-08-15 | Virtual Ink Corporation | Transcription system |
GB2337330A (en) * | 1998-05-14 | 1999-11-17 | Virtual Ink Corporation | Transcription system |
US6100877A (en) * | 1998-05-14 | 2000-08-08 | Virtual Ink, Corp. | Method for calibrating a transcription system |
US6111565A (en) * | 1998-05-14 | 2000-08-29 | Virtual Ink Corp. | Stylus for use with transcription system |
GB2337330B (en) * | 1998-05-14 | 2000-11-15 | Virtual Ink Corp | Transcription system |
US6177927B1 (en) | 1998-05-14 | 2001-01-23 | Virtual Ink Corp. | Transcription system kit |
US6191778B1 (en) | 1998-05-14 | 2001-02-20 | Virtual Ink Corp. | Transcription system kit for forming composite images |
US6211863B1 (en) | 1998-05-14 | 2001-04-03 | Virtual Ink. Corp. | Method and software for enabling use of transcription system as a mouse |
US6310615B1 (en) | 1998-05-14 | 2001-10-30 | Virtual Ink Corporation | Dual mode eraser |
WO2006034380A1 (en) * | 2004-09-23 | 2006-03-30 | Crown Equipment Corporation | Rotating and swiveling seat |
CN108802739A (zh) * | 2018-05-31 | 2018-11-13 | 深圳臻迪信息技术有限公司 | 一种水下障碍物探测方法及探测装置 |
CN108802739B (zh) * | 2018-05-31 | 2021-04-16 | 深圳臻迪信息技术有限公司 | 一种水下障碍物探测方法及探测装置 |
Also Published As
Publication number | Publication date |
---|---|
AU3561195A (en) | 1996-04-26 |
DE4435156C2 (de) | 2002-06-27 |
US5869764A (en) | 1999-02-09 |
DE4435156A1 (de) | 1996-04-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1996010817A1 (de) | Ultraschallsensor | |
DE19645339B4 (de) | Verfahren zur von den Fahrzeugdaten abhängigen Abstandsmessung aus einem Fahrzeug | |
EP1910866B1 (de) | Verfahren zur ermittlung der tiefenbegrenzung einer parklücke mittels ultraschallsensoren und system hierzu | |
EP1161692B1 (de) | Vorrichtung mit mindestens einem lasersensor und verfahren zum betreiben eines lasersensors | |
EP2917756B1 (de) | Abtastende optoelektronische detektionseinrichtung mit einer detektionsschwelle, kraftfahrzeug und entsprechendes verfahren | |
EP1296412B1 (de) | Einparkhilfsvorrichtung für Kraftfahrzeuge | |
EP2804013B1 (de) | Vorrichtung zum Messen der Position eines Fahrzeugs oder einer Oberfläche desselben | |
EP3435117B1 (de) | Sensor und verfahren zur erfassung und abstandsbestimmung von objekten | |
DE19832800A1 (de) | Hinderniserfassungssystem für ein Kraftfahrzeug | |
DE102016108756A1 (de) | Radarsensoreinrichtung für ein Kraftfahrzeug, Fahrerassistenzsystem, Kraftfahrzeug sowie Verfahren zum Erfassen eines Objekts | |
DE102012025064A1 (de) | Verfahren zum Aufrechterhalten eines Warnsignals in einem Kraftfahrzeug aufgrund der Präsenz eines Zielobjekts in einem Warnbereich, insbesondere einem Totwinkelbereich, entsprechendes Fahrerassistenzsystem und Kraftfahrzeug | |
EP0048958A1 (de) | Schaltungsanordnung zur Ermittlung und Anzeige der Unterschreitung vorgegebener Mindestabstände zwischen einem Fahrzeug und einem Hindernis | |
DE102012212150A1 (de) | Laserradarvorrichtung, die zwischen einem Kennzeichenschild und einemFahrzeugaufbau angeordnet ist | |
WO2008058777A1 (de) | Radarsystem für kraftfahrzeuge | |
DE19839942C2 (de) | Einparkhilfe für ein Kraftfahrzeug | |
DE4040894C1 (en) | Motor vehicle parking aid using pulsed laser - evaluates signal reflected from obstacle and received by semiconductor diode at rear corner of vehicle | |
DE102009028578A1 (de) | Verfahren für die Umfelderfassung mit einer Lidarsensorik | |
DE102017119042A1 (de) | Vermeidung von Totwinkelwarnungen durch Gischt | |
EP2062068B1 (de) | Verfahren zum betreiben eines kraftfahrzeug-radarsystems und kraftfahrzeug-radarsystem | |
DE102005010657A1 (de) | Objekterfassungsvorrichtung | |
WO2019215028A1 (de) | Ultraschallsensorsystem und verfahren zum erkennen von objekten im umfeld eines fahrzeugs, sowie fahrzeug mit einem ultraschallsensorsystem | |
DE3341022A1 (de) | Kollissionswarneinrichtung fuer kraftfahrzeuge auf ultraschallbasis | |
WO2021228475A1 (de) | Verfahren zum erkennen und klassifizieren von objekten, kraftfahrzeug | |
DE102019211375B4 (de) | Kraftfahrzeug mit einem Radarsensor und Verfahren zum Betrieb des Kraftfahrzeugs | |
DE102013200458A1 (de) | System zur Umfeldsensorik |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AM AU BB BG BR BY CA CN CZ EE FI GE HU IS JP KE KG KP KR KZ LK LR LT LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SG SI SK TJ TM TT UA UG US UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 08817793 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 96511276 Format of ref document f/p: F |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 96511276 Format of ref document f/p: F |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 96511276 Format of ref document f/p: F |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 1996511276 Format of ref document f/p: F |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 1996511276 Format of ref document f/p: F |