EP1802997A1 - Vorrichtung und verfahren zum ermitteln der position oder kontur eines begrenzungsabschnittes eines hindernisses - Google Patents
Vorrichtung und verfahren zum ermitteln der position oder kontur eines begrenzungsabschnittes eines hindernissesInfo
- Publication number
- EP1802997A1 EP1802997A1 EP04790799A EP04790799A EP1802997A1 EP 1802997 A1 EP1802997 A1 EP 1802997A1 EP 04790799 A EP04790799 A EP 04790799A EP 04790799 A EP04790799 A EP 04790799A EP 1802997 A1 EP1802997 A1 EP 1802997A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmitting
- obstacle
- motor vehicle
- main
- different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 24
- 238000011156 evaluation Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 59
- 238000001514 detection method Methods 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 12
- 239000003086 colorant Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 125000000773 L-serino group Chemical group [H]OC(=O)[C@@]([H])(N([H])*)C([H])([H])O[H] 0.000 description 1
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 241001275117 Seres Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9314—Parking operations
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93274—Sensor installation details on the side of the vehicles
-
- 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
- G01S2015/932—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations
- G01S2015/933—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations for measuring the dimensions of the parking space when driving past
- G01S2015/935—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations for measuring the dimensions of the parking space when driving past for measuring the contour, e.g. a trajectory of measurement points, representing the boundary of the parking space
Definitions
- the invention relates to a device, in particular for a motor vehicle, for determining the position or the contour of a limiting section, in particular a flank, of at least one obstacle. Furthermore, the invention relates to a corresponding method and a computer program for carrying out this method.
- a 'device is disclosed a parking space for measuring length which are spaced parked of two vehicles to one another is limited.
- a vehicle which is equipped with the described measuring device pass by the parking space and the parked vehicles.
- the measuring device comprises in the vehicle an ultrasonic sensor which is arranged in a side region of the vehicle such that its main transmission direction is oriented away from the vehicle towards the parked vehicles.
- the main transmitter direction of this ultrasonic sensor is fixed and thus not variable. If a transmission signal emitted by the ultrasound sensor thus formed is in particular a round contour of a
- the measuring device For receiving the resulting reflection signals, the measuring device has a plurality of receiving devices positioned at different locations in the side region of the vehicle passing by. Depending on which of these Receiving devices in response to a current position of the passing vehicle with respect to the parked vehicle currently receiving reflection signals can be infer the exact contour of the boundary portion of the parked vehicle, which was passed by.
- the cited prior art has the disadvantage that for the realization of the measuring device described a plurality of receiving devices is required. This not only means an increased cost in the form of increased acquisition costs and increased installation costs, but also has an aesthetic disadvantage. This is that the receiving devices are arranged distributed at different positions in the side region of the vehicle visible and can disturb the overall aesthetics of the side region of the vehicle in this way.
- the device according to the invention in particular for a motor vehicle for determining the position and / or the contour of a delimiting section, in particular an edge, of at least one obstacle, has at least one transmitting device preferably arranged in a side region of the motor vehicle for emitting a transmission signal and at least one receiving device, preferably in a side region of the motor vehicle, for receiving a reflection signal, wherein the reflection signal represents the transmission signal after the reflection at an obstacle.
- the device according to the invention further has an evaluation device for evaluating the reflection signal with regard to the position and / or the contour of the boundary section of the obstacle and is characterized in that a main transmitter direction of the transmitter can be changed, in particular in a plane lying approximately parallel to the upper surface of the vehicle ,
- the change of the main transmission direction according to the invention allows a pre zi seres detecting the contour of an obstacle, as it is possible in the prior art with a fixed, extending transversely to the direction main transmission direction.
- a control device for selecting and / or adjusting the main transmission direction.
- the control device may, for example, have a microcontroller and, for example, when the device according to the invention is installed in a motor vehicle. B. via a bus system with other control devices such. B. be connected to a control device for a brake system of the motor vehicle.
- the transmitting device has at least one transmitting element, and the control device is designed to set the main transmitting direction of this transmitting element, in particular independently of the main transmitting direction (s) of further transmitting elements.
- the transmitting element can be designed, for example, as a radar transmitting element or as an ultrasonic transmitter.
- a combination of radar transmission elements and ultrasound transmitters is also conceivable.
- existing further transmitting elements has the advantage that only the respective transmitting element is specially adapted to a special detection situation with regard to its main transmitting direction, while the further transmitting elements do not have to be changed.
- At least one actuator for adjusting the main transmitter direction of the transmitter device it is very particularly advantageous to have at least one actuator for adjusting the main transmitter direction of the transmitter device.
- a transmitting element provided.
- the actuator for example, a reciprocating movement of the transmitting device or a single transmitting element can be carried out, whereby various main transmission directions z. B. be realized based on the direction of travel of a motor vehicle.
- the actuator is designed as an electric motor, in particular as a stepping motor.
- control device for this purpose is designed to control different transmitting elements for setting the main transmitter direction of the transmitting device with signals of different phase position and / or different amplitude.
- a specific directional characteristic for example with a lobe shape, that is, for the transmitting device, can be obtained. e.g. concentrated, adjusted and changed to a certain solid angle, so that no mechanical drive of the transmitter or individual transmitting elements is required to change the main transmitter direction.
- Another very advantageous embodiment of the present invention is characterized in that a plurality of transmitting elements are provided with different mounting position in the transmitting device, and that the control device is adapted to set the main transmitting device of the transmitting device in each case at least Turn one of the multiple transmit elements on or off.
- dex invention results in a particularly simple control or adjustment of the main transmitter direction.
- the transmitting elements can also be operated simultaneously, wherein the respective transmission signals are emitted simultaneously in different directions due to the different mounting position.
- a further variant of the device according to the invention is characterized in that the main transmission direction is variable as a function of an operating state and / or a speed and / or a direction of travel of a motor vehicle having the device.
- a particularly advantageous embodiment of the device according to the invention is characterized in that the evaluation device evaluates the reflection signals of two different obstacles, in particular parked vehicles, with regard to their respective limiting sections and with additional consideration of the motor vehicle between the reception of the different reflection signals of the two obstacles traveled distance calculates the distance between the two obstacles, in particular as the length of a parking space.
- the main transmission direction is advantageously set such that it occupies an angle of ⁇ 90 ° or> 90 ° with the direction of travel of the motor vehicle.
- the possible more precise determination of the limitation of the obstacles due to the invention can also be used according to the embodiment described to determine the length of a parking space more precisely than is possible with previous methods of the prior art.
- Another very advantageous embodiment of the present invention provides an information device in particular for the driver of the motor vehicle, to indicate whether due to the calculated distance in comparison with the length of the motor vehicle parking of the motor vehicle between the two obstacles is even possible and if so, preferably whether the parking for the driver difficult or easy will be.
- the driver is offered an essential decision aid to decide whether he wants to park in a specific parking space or not.
- the information device is designed as an optical display device to emit light in different colors, each color representing a different degree of difficulty for a parking situation.
- the display device may in particular have light-emitting diodes or LC displays or be integrated into an existing on-board electronics with optical signal means or also a screen display. Alternatively or additionally, the
- Information device be designed as an acoustic display device.
- a method for determining the position and / or the contour of a limiting section, in particular an edge, of at least one obstacle comprising the following steps: emitting a transmission signal, preferably to the limiting section of the obstacle Receiving a reflection signal representing the transmission signal after being reflected at the boundary portion; and evaluating the reflection signal with respect to the position and / or contour of the boundary portion of the obstacle; characterized in that a main transmitter direction of a transmitting device and / or one or more transmitting elements is changed.
- An advantageous embodiment of the method according to the invention is characterized in that the main transmitter direction is changed as a function of already received or evaluated reflection signals and / or as a function of an operating state and / or a speed and / or a direction of travel of a motor vehicle.
- the main transmission direction when driving forward can be set so that it includes an angle ⁇ 90 ° with the direction of travel, so that obstacles located to the right in front of the vehicle or a parking space can be better detected.
- This main send direction is also checked after the detection of an obstacle-free area, i. a possible parking space, maintained while the motor vehicle, for example, passes de.x detected parking space continues straight ahead to measure the • length of the parking space.
- the main transmission direction is changed so that it encloses an angle of> 90 ° with the direction of travel. In this way, a more accurate detection of the contour of the standing in front of the parking space to be measured vehicle is possible.
- the main transmitter direction is changed by controlling different transmitter elements with signals of different phase position and / or different amplitude.
- the transmitting device and / or the transmitting element is moved back and forth between a plurality of transmitting positions and / or a plurality of transmitting elements with a different mounting position in the Transmitter are turned on or off.
- the main transmission direction is changed alternately between two settings, whereby - in relation to the direction of travel of the motor vehicle - e.g. At the same time a right lying in front of the vehicle area and a side lying right of the motor vehicle area can be detected simultaneously.
- the main transmitter direction is set as a function of a directional characteristic of the transmitter, in particular as a function of a lobe width of the directional characteristic, and / or one or more transmitter elements.
- the main transmitter direction can also be set irx depending on the vehicle dimensions.
- the main transmission direction in particular for finding a parking space, is set so that it includes an angle with a travel direction which is smaller than 90 °.
- the main transmission direction is then adjusted so that it includes an angle with a direction of travel, which is greater than 90 °, if previously a obstacle-free space, in particular a parking space, has been recognized, and if after Detecting the obstacle-free space again an obstacle is detected.
- a computer program with program code for a control device for setting the main transmitter direction of a transmitter characterized in that the program code is formed, the main transmitter direction to adjust according to the method of any one of claims 13 to 19.
- the program code is stored on a computer-readable medium, e.g. on a flash memory or on a CD-ROM.
- the main transmission direction e.g. Continuously track when driving past a parking space, so that several signals emitted by the transmitting element or the transmitting device are received as reflection signals after their reflection at the limiting section.
- a plurality of reflection signals are thus obtained by the same limiting section, wherein the reflection signals always strike the receiving device at almost the same angle due to the tracking.
- This tracking can be carried out as an alternative or in addition to the abovementioned method variants.
- the resulting different reflection signals from one and the same limiting section allow a very accurate inference to its position, for example, with respect to a road surface and / or with respect to its contour.
- control device is designed to set the main transmitter unit of the transmitting device variable at least in a lying approximately parallel to a road surface level. Such a design of the control device is sufficient to detect the contour of the obstacle in a horizontal plane above the road surface.
- changing the main transmission direction according to the invention is not restricted to a plane parallel to the road surface. It is also conceivable to change the main transmission direction in a plane lying approximately vertically to the road surface, for example to detect a shaft in the region of a roadway edge or a curb.
- a combination of a horizontal and a vertical movement of the main transmitter direction can also be realized with the device according to the invention, for example for monitoring a larger angular range.
- FIG. 1 shows a situation as is typical of the application of the invention
- Figure 2 shows the device according to the present invention
- Figure 3a shows the alignment of a transmitting element according to the invention transversely to the direction of travel
- Figure 3b shows the orientation of Sencäeelements invention of Figure 3a, so that the main transmitter direction with the direction of travel occupies an angle ⁇ 90 °;
- Figure 4a shows a first phase in finding a parking space according to the prior art
- Figure 4b shows a second phase in finding a parking space according to the prior art
- Figure 4c shows a third phase in finding a parking space according to the prior art
- Figure 4d shows a fourth phase in finding a parking space according to the prior art
- Figure 5a shows a first phase in finding a parking space by means of the invention
- Figure 5b shows a second phase in finding a parking space by means of the invention
- Figure 5c shows a third phase in finding a parking space by means of the invention
- Figure 5d shows a fourth phase in finding a parking space by means of the invention
- FIG. 7a shows a first inventively determined
- FIG. 7b shows a second inventively determined
- FIG. 8 shows an obstacle profile determined by means of a device from the prior art in the situation from FIG. 6.
- Figure 1 shows a typical situation for the application of the present invention.
- Two parking vehicles 101 and 102 are shown between which a parking space of length L exists.
- the two parking vehicles 101 and 102 limit the parking space and in each case constitute an obstacle in the sense of the present invention.
- the question arises as to whether his vehicle 200 fits into the parking space or not.
- the length of the parking space L must first be determined as accurately as possible and then compared with the actual length of the motor vehicle 200.
- the invention aims to determine the length L of the parking space as accurately as possible with the aid of a built-in motor vehicle 200 device.
- Such a device 30 is detailed in FIG described. It comprises a transmitting device 32, which is arranged in the side region of the motor vehicle 200 (cf., FIG. 1) and from there emits a transmission signal in response to a limiting section 101a of the obstacle whose position or contour is to be determined.
- the transmitting device 32 can be, for example, radar or ultrasound systems, as used, for example, in known parking aid systems.
- a receiving device 34 For receiving dex signals which are reflected by an obstacle as reflection signals, a receiving device 34 is provided. The evaluation of the reflection signal takes place in the evaluation device 38.
- the transmission device 32 transmits the transmission signal under the main transmission direction shown in FIG. in particular not transverse to the direction D emits.
- the main transmitter direction shown in FIG. 1 can be achieved, for example, by the alignment of the transmitter element 32 - 1 (see FIG. In contrast to the main transmission direction, which is transverse to the direction of travel D according to FIG. 3a, the main transmission direction according to FIG. 3b assumes an angle alpha_2 with respect to the direction of travel D, for which alpha_2 ⁇ 90 °.
- FIGS. 3a to 3c a directional characteristic 33 of the transmitting element 32-1 is shown next to the transmitting element 32-1 and extends essentially symmetrically with respect to the axis A. Therefore, the axis A is also substantially parallel to the main end Rich ⁇ tung the transmitter element 32-1.
- FIGS. 4a to 4d show an exact cguer, i. in the right-hand angle to the direction of travel pointing to the left in the direction of the main transmission, as used in systems of the prior art and represent Mom.entaufnah relie that the passing of the motor vehicle at an obstacle for measuring a parking space analogous to the situation ai ⁇ s figure 1 indicate.
- the arrow pointing to the left in FIGS. 4a to 4d symbolizes in each case not only the direction of travel but also a path axis with four marked positions which, when the motor vehicle passes in succession; be taken from right to left by the transmitting device 32.
- a parking space is detected earlier and more precisely by means of the present invention. Due to the inclination of the main transmission direction according to FIG. 3b, i. alpha_2 ⁇ 90 °, the transition from detection of the obstacle to detection of an obstacle-free area takes place much faster.
- Limiting section 102a yields the measured curve 102b after.
- FIG. 7b wherein a main transmission direction, as shown in FIGS. 6 and 3c, is inclined towards the direction of travel.
- FIG. 8 shows a measured trajectory of a limitation of a parking space, as obtained with a conventional device and a conventional method. It can be clearly seen that the course obtained by conventional methods has significantly less steep flanks, in particular in the areas 103 according to FIG. 8, compared to the courses 101b, 102b of FIGS. 7a and 7b determined according to the invention.
- the invention enables a precise detection even of rectangular contours 101a, 101b, on whose basis an accurate determination of the length L of the parking space is possible.
- the motor vehicle 200 moves in the direction of travel D ( Figure 6) past the vehicles 101, 102 and the parking space.
- the main transmitter direction as shown in Figure 6 adjusted so that it includes an angle of alpha_2 ⁇ 90 ° together with the direction of travel to accurately recognize the contour of the limiting portion 101a.
- the position s_2 is reached, the beginning of the parking space is detected due to the missing or too weak reflection signal.
- the motor vehicle 200 passes the parking space until a reflection signal is again received at a position I short before s_3, which is produced by reflection of the transmission signal to the vehicle 102.
- the main transmission direction is changed according to Figure 3c so that it with the direction of travel D an angle of alpha 3> 90 °, whereby a more precise detection of the contour of the limiting section 102a is possible according to the principle already described.
- the end of the parking space is reliably detected.
- control device 36 In addition to the detection and processing of the reflection signals, the control device 36 (FIG. 2) also records and evaluates path pulses which the control device 36 receives, for example, from another control device (not shown) of the motor vehicle 200, with which the control device 36 receives e.g. connected via a common bus system (not shown).
- the path pulses allow a calculation of a path traveled by the motor vehicle 200 and, together with the information about the course 101b, 102b of the contours of the limiting sections 101a, 101k>, allow the calculation of the length L of the parking space.
- this calculated length L of the parking space is compared with the length of the motor vehicle 200, a statement is possible whether a parking of the motor vehicle 200 in the Parking space is possible or not. Depending on the difference between these two lengths, it is further possible for the evaluation device 38 (FIG. 2) to estimate whether parking for the driver of the motor vehicle 200 will be difficult or easy.
- the information device 39 is designed, for example, as an optical display device. As such, it can preferably emit light in different colors, each color representing a different degree of difficulty for a particular parking situation. In analogy to the meaning of the traffic light colors red, yellow and green, it is advantageous that a red emitted light is assigned the meaning that parking in the just measured parking space is not possible. Yellow light means accordingly that parking is possible, but only with certain difficulties and green light means preferably that the parking space is sufficiently large and parking is possible without any problem.
- the display device can be designed, for example, in the form of a digital display or in the form of light-emitting diodes. Additionally or alternatively, the information device 39 may also be designed as an acoustic display device.
- the most tunable main transmitter direction is a very precise measurement of parking spaces and accurate detection of obstacles and their contours possible.
- the main transmitter direction between two settings can be selected, which are, for example, the two settings shown in Figures 3b and 3c can act.
- a non-imaged electromagnet or a servomotor or. Stepper motor may be provided, which if necessary. spring loaded in a z. B. 3b corresponding output position held transmitting element 32-1 back into the position F ⁇ gur 3c back and forth from this position back to the réellepo s it ion.
- the angle alpha_2 can be selected, for example 8 to 0 °, and the angle can alpha_3 beispielswei se chosen to 100 ° ⁇ we re.
- the main transmitter direction is determined as a function of a directional characteristic of the transmitter 32 or, in the case of a single transmitter t 32-1 as in FIGS. 3a to 3c, as a function of a directional characteristic of the transmitter element 32-. 1 itself:
- the angles alpha_2, alpha_3 are advantageous here: in particular as a function of a club width of the direction characteristic qe Brass, wherein for realizing the Er f indungsge philosophicals qenerell an angle between the main transmission direction and z.
- the direction of travel D is to be selected such that when moving the transmitting element 32-1 on an obstacle as quickly as possible in or out of the obstacle in the or. is given from the dependent of the directional detection range.
- phase / amplitude control described above is common to both radar and Transmitting elements as well as ultrasonic transducers used.
- the main transmitting device of the transmitting device 32 is preferably continuously changed such as e.g. over a longer period of time during the passage of the vehicle 101 always to detect the same location of the limiting portion 101 a of the vehicle 101.
- the relative movement of the passing motor vehicle 200 to the parked vehicle 101 must in this case by a corresponding tracking, i. be compensated by a continuous adjustment of the angle between the Hai ⁇ ptsenderaum and the direction of travel.
- a particularly large amount of measurement data can be detected from a specific location of an obstacle, e.g. can be processed particularly advantageous by way of correlation.
- the inventive device 30 comprises the already mentioned evaluation device 38 for evaluating the received reflection signals in reference to the position and / or the contour of the limiting section 101a, 102a of the obstacle.
- the evaluation device 38 is able to accurately detect, for example, the contour of the bumper and / or the front region of the front fender, the left front lamp and possibly also the radiator grille.
- the described device 30 enables a particularly accurate determination of the position of the limiting section 101a, that is, the left front front of the vehicle 101, because a plurality of reflection signals .information about exactly this limiting section 101a of FIG represent different viewing directions and are available for evaluation. That this plurality of reflection signals is received at all, is ensured by the e rfindungsdorfe tracking the main transmitter direction and the preferably narrow beam field. In this way it is achieved that the reflection signals are read back substantially parallel to the main transmitter direction.
- the transmitter 32 (FIG. 2) has a plurality of transmitter elements 32-1. , , 32-n, which are permanently installed in the transmitting device 32 in each case with another main transmitting direction, and the control device 36 must then be designed such that it switches the individual transmitting elements on or off according to the demand of a desired main transmitting direction.
- the main transmission direction is adjusted to an angle alpha_2 ⁇ 90 °, i. H . at least partially oriented in the direction of travel D, as soon as a tracking of the main transmitter direction to a previously detected obj ect due to z. B. a mechanical limitation is no longer possible.
- the described method according to the invention for more precise determination of the position or contours of a limiting section of an obstacle is preferably realized in the form of a computer program with program code for the control device 36.
- the computer program if appropriate together with other computer programs on a computer-readable medium is stored.
- Data carrier may be a floppy disk, a compact disc, a so-called flash memory or the like.
- the computer program stored on the data carrier can then be sold as a product to a customer.
- the method for finding a parking space described above with reference in particular to FIG. 6 is not limited to the adjustment of the main transmission direction described therein.
- a selection or adjustment of the main transmission direction is expedient in which a particularly precisely measured curve 101b, 102b of the contours of the limiting sections 101a, 101b results, cf.
- Figure 7a, 7b is expedient in which a particularly precisely measured curve 101b, 102b of the contours of the limiting sections 101a, 101b results, cf.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2004/012008 WO2006045327A1 (de) | 2004-10-23 | 2004-10-23 | Vorrichtung und verfahren zum ermitteln der position oder kontur eines begrenzungsabschnittes eines hindernisses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1802997A1 true EP1802997A1 (de) | 2007-07-04 |
Family
ID=34958999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04790799A Withdrawn EP1802997A1 (de) | 2004-10-23 | 2004-10-23 | Vorrichtung und verfahren zum ermitteln der position oder kontur eines begrenzungsabschnittes eines hindernisses |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1802997A1 (de) |
| WO (1) | WO2006045327A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5857900B2 (ja) * | 2012-07-18 | 2016-02-10 | アイシン精機株式会社 | 駐車支援装置 |
| JP6981928B2 (ja) * | 2018-06-28 | 2021-12-17 | 日立Astemo株式会社 | 検知装置 |
| CN115782993B (zh) * | 2023-01-30 | 2023-05-30 | 卡斯柯信号(北京)有限公司 | 一种验证自动触发障碍物脱轨防护范围的方法及装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5467072A (en) * | 1994-03-11 | 1995-11-14 | Piccard Enterprises, Inc. | Phased array based radar system for vehicular collision avoidance |
| FR2743151B1 (fr) * | 1996-01-02 | 1998-01-30 | Renault | Systeme de detection et de mesure de creneau de stationnement |
| DE10349755B3 (de) * | 2003-10-24 | 2005-01-27 | Adam Opel Ag | Sensor an einem Kraftfahrzeug |
-
2004
- 2004-10-23 WO PCT/EP2004/012008 patent/WO2006045327A1/de not_active Ceased
- 2004-10-23 EP EP04790799A patent/EP1802997A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006045327A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006045327A1 (de) | 2006-05-04 |
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