EP2044460A1 - Erkennung und kompensation von zielverlusten beim kanalübergang - Google Patents
Erkennung und kompensation von zielverlusten beim kanalübergangInfo
- Publication number
- EP2044460A1 EP2044460A1 EP07787574A EP07787574A EP2044460A1 EP 2044460 A1 EP2044460 A1 EP 2044460A1 EP 07787574 A EP07787574 A EP 07787574A EP 07787574 A EP07787574 A EP 07787574A EP 2044460 A1 EP2044460 A1 EP 2044460A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- target object
- detection
- adjacent
- target
- 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- Withdrawn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
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
- 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
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional [2D] tracking, e.g. combination of angle and range tracking, track-while-scan radar
- G01S13/723—Radar-tracking systems; Analogous systems for two-dimensional [2D] tracking, e.g. combination of angle and range tracking, track-while-scan radar by using numerical data
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/66—Tracking systems using electromagnetic waves other than radio waves
-
- 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
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
Definitions
- the present invention relates to a method for detecting and compensating for target losses of a distance sensor device of a motor vehicle when a target object passes from a detection channel of the distance sensor device into an adjacent detection channel.
- ACC adaptive cruise control
- Abstandsregeltempomaten automatic distance control devices.
- both the position and the speed of a preceding vehicle are detected by means of a distance sensor device.
- the distance sensor device may be based, for example, on radar or LIDAR based sensors.
- the speed as well as the distance of the vehicle equipped with the distance control device are adaptively regulated with an engine and / or a brake intervention as a function of the measured variables.
- the intensity maxima in the individual detection channels of the distance sensor device usually do not overlap. Therefore, during operation of the distance sensor device, the situation may occur that relatively weakly reflecting targets no longer exist between the intensity maxima of two adjacent channels Applicant: Hella KGaA Hueck & Co.
- Distance control device predicted depending on the previous quality and lifetime for a certain number of subsequent measurement cycles.
- the present invention has for its object to provide a method for detecting and compensating target losses of a distance sensor device of a motor vehicle at a transition of a target object of a detection channel of the distance sensor device in an adjacent detection channel available, which is suitable, even relatively narrow, in particular single-channel Capture target objects without loss of target.
- the inventive method is characterized according to claim 1 characterized in that an average size of a weak detection range between two intensity maxima of two adjacent detection channels is determined and the duration that a narrow, in particular a single-channel target dwells in this predetermined weak detection range is calculated.
- the time of entry of the target object into the adjacent detection channel can be determined and thus the presence of a target object for the time of a transition from a channel i to an adjacent channel i + 1 (or i-1) can be predicted, so that a possible target loss can be prevented in a simple and efficient way.
- the solution according to the invention can be, in particular, relatively narrow, preferably stationary target objects, such as, for example, guide posts on the roadway edge when driving straight ahead Applicant: Hella KGaA Hueck & Co.
- the weak detection range between the two adjacent channels i, i + 1 (or i, i-1) can be determined in a simple manner.
- an adaptive adaptation to the signal image of the distance sensor device can be achieved in order to stabilize comparatively narrow targets, which can not potentially be detected in a transition between two channels, by the method described here and thus also for further processing , in particular in longitudinal control, continuously available.
- a lateral width b of the weak detection range be determined from the relationship
- cxi is the transition angle between the channel i and the adjacent channel and s denotes the path the motor vehicle travels to a sufficiently sensitive area of the adjacent channel until the target object re-enters.
- the path s is determined by a temporal integration of the speed v of the motor vehicle.
- Determination of the path s can thus take place with comparatively little effort.
- a mean opening angle w of the weak detection area between the adjacent detection channels is determined.
- d is the mean radial distance between the disappearance and reappearance of the target object in adjacent detection channels.
- the quantity d is thus a virtual target distance at the channel transition from one detection channel to an adjacent detection channel, which results from the average value of the radial target distances in the disappearance and exchange of the target object in the adjacent channels.
- the average opening angle w of the weak detection area is determined by a plurality of measurements for different channels and / or target objects. It can be assumed for reasons of simplification that the energy distribution in the individual detection channels is comparable.
- the length s of the weak detection region can, in an advantageous embodiment, be determined from the relationship:
- d is the last measured distance of the target object and ⁇ i is the angle to the expected channel transition.
- time t which lingers the target object within the weak detection range
- Distance sensor device is not updated with measurement data and thus must be predicted using an evaluation.
- Fig. 1 shows a greatly simplified
- Fig. 2 is a schematic representation of the basic principle of a method according to the invention for detecting and compensating for target losses of a distance sensor device of a motor vehicle.
- Fig. 1 is a power distribution 1 of the detection signals in a multi-channel receiver means a
- Fig. 1 can be seen a plurality of energy maxima 2 in the corresponding channels. Furthermore, an energy threshold 3 is shown as a horizontal line, Applicant: Hella KGaA Hueck & Co.
- Fig. 2 As shown schematically in Fig. 2, is a
- Distance sensor device for a motor vehicle which is suitable for carrying out the method explained below, able to display a detection area (beam) fanned out side by side in multiple ways.
- This may for example be provided with a transmitter means and a receiver means, which may be arranged to rotate like a scanner, or alternatively with a plurality of transmitter means arranged substantially parallel to one another and a receiver means or for example in LIDAR-based distance sensor apparatuses with a plurality of parallel transmitter means and receiver means (for example 16x1 °).
- the individual beams are generally transmitted sequentially.
- the weak detection range for this target object 4 during a straight-ahead travel of a motor vehicle can be calculated.
- the lateral width b of the weak detection range results with a good approximation to:
- OL ⁇ denotes the transition angle between the channel i and the adjacent channel i + 1.
- the opening angle w of the weak detection range can then be determined using the equation:
- d is the mean radial distance between the disappearance and reappearance of the target object (4) in adjacent detection channels.
- d is the virtual target distance at a channel transition resulting from an average of the radial target distances in the disappearance and appearance of the target object 4 in the adjacent channels i and i + 1.
- the opening angle w of the weak detection area can thus be determined by means of a simple geometric relationship.
- the opening angle w of the weak detection area can be determined with a good approximation.
- the length s of the weak detection range can be calculated using the equation:
- the time that the target object 4 dips into the weak detection range can be calculated using the equation:
- the method described here makes it possible to easily detect and compensate for possible target losses which can occur during the operation of the distance sensor device.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006033952A DE102006033952A1 (de) | 2006-07-22 | 2006-07-22 | Erkennung und Kompensation von Zielverlusten beim Kanalübergang |
| PCT/EP2007/057306 WO2008012226A1 (de) | 2006-07-22 | 2007-07-16 | Erkennung und kompensation von zielverlusten beim kanalübergang |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2044460A1 true EP2044460A1 (de) | 2009-04-08 |
Family
ID=38544184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07787574A Withdrawn EP2044460A1 (de) | 2006-07-22 | 2007-07-16 | Erkennung und kompensation von zielverlusten beim kanalübergang |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7928899B2 (de) |
| EP (1) | EP2044460A1 (de) |
| KR (1) | KR20090033902A (de) |
| DE (1) | DE102006033952A1 (de) |
| WO (1) | WO2008012226A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034374A (en) * | 1975-11-10 | 1977-07-05 | International Telephone And Telegraph Corporation | Sequential lobing track-while-scan radar |
| EP0464263A3 (en) | 1990-06-27 | 1992-06-10 | Siemens Aktiengesellschaft | Device for obstacle detection for pilots of low flying aircrafts |
| DE4028788A1 (de) * | 1990-09-11 | 1992-03-12 | Bayerische Motoren Werke Ag | Laserstrahleinrichtung ii |
| US6492949B1 (en) | 2000-08-16 | 2002-12-10 | Raytheon Company | Slot antenna element for an array antenna |
| EP1310804B1 (de) * | 2001-11-08 | 2010-12-22 | Fujitsu Ten Limited | Abtastradar |
| DE102004033212A1 (de) * | 2004-07-09 | 2006-02-02 | Hella Kgaa Hueck & Co. | Verfahren und Vorrichtung zur Kompensation von Einbautoleranzen eines Abstandssensors |
| JP4894360B2 (ja) * | 2006-06-07 | 2012-03-14 | 株式会社デンソー | レーダ装置 |
-
2006
- 2006-07-22 DE DE102006033952A patent/DE102006033952A1/de not_active Withdrawn
-
2007
- 2007-07-16 WO PCT/EP2007/057306 patent/WO2008012226A1/de not_active Ceased
- 2007-07-16 EP EP07787574A patent/EP2044460A1/de not_active Withdrawn
- 2007-07-16 US US12/374,299 patent/US7928899B2/en not_active Expired - Fee Related
- 2007-07-16 KR KR1020097003481A patent/KR20090033902A/ko not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008012226A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008012226A1 (de) | 2008-01-31 |
| US7928899B2 (en) | 2011-04-19 |
| KR20090033902A (ko) | 2009-04-06 |
| US20090184863A1 (en) | 2009-07-23 |
| DE102006033952A1 (de) | 2008-01-24 |
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| AX | Request for extension of the european patent |
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| 17Q | First examination report despatched |
Effective date: 20090525 |
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| R17C | First examination report despatched (corrected) |
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| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20140201 |