WO2006003201A1 - Auswerteverfahren und auswertevorrichtung für ein system zur sitzbelegungserkennung - Google Patents
Auswerteverfahren und auswertevorrichtung für ein system zur sitzbelegungserkennung Download PDFInfo
- Publication number
- WO2006003201A1 WO2006003201A1 PCT/EP2005/053187 EP2005053187W WO2006003201A1 WO 2006003201 A1 WO2006003201 A1 WO 2006003201A1 EP 2005053187 W EP2005053187 W EP 2005053187W WO 2006003201 A1 WO2006003201 A1 WO 2006003201A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- value
- reflector
- seat
- evaluation
- comparison
- Prior art date
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims description 18
- 230000002596 correlated effect Effects 0.000 claims description 15
- 238000013016 damping Methods 0.000 description 35
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/0153—Passenger detection systems using field detection presence sensors
- B60R21/01534—Passenger detection systems using field detection presence sensors using electromagneticwaves, e.g. infrared
Definitions
- the invention relates to a method for evaluating a plurality of reflector responses of a system for seat occupancy recognition and to a corresponding device.
- HOBBIT human observation-by-beam interference technology
- the HOBBIT system consists of a central base station and individual reflectors in the seat for detecting a respective seat occupancy.
- high-frequency signals for example 2.45 GHz waves
- the base station transmits frequency-modulated signals with a frequency of 2.45 GHz, which strike the reflectors. There they are reflected modulated and received by the base station.
- the reflector responses thus obtained are evaluated with regard to their level. For this purpose, a so-called damping thickness is calculated.
- the attenuation thickness denotes the algorithm from the ratio of transmitted and received levels of the respective transmitted or received signals.
- the value of the attenuation thickness is greater the lower the level of the reflected signal received by the base station.
- the damping thickness is thus a measure of the seat occupancy, so that it is possible to deduce the fit of the seat with a person or an object from the damping thickness.
- the present invention is based on the finding that different seat occupancies cause different, in particular characteristic reflector responses.
- special methods according to the invention with which the individual reflector responses or the levels received at the base station of a system for seat occupancy detection are evaluated, a secure classification of a person on a seat is thus possible.
- Another particular advantage consists in the fact that the approach according to the invention can be used in addition to already existing systems for recognizing seat occupancy.
- a prediction of individual reflector responses takes place.
- the pre-evaluation can be tailored specifically to the individual areas from which the detected reflector responses originate. After the pre-evaluation, a classification of the pre-evaluated reflector responses takes place in order to determine the evaluation result.
- the pre-evaluation has the particular advantage that information from individual reflector responses can be used purposefully to obtain additional occupancy information.
- the step of classifying may include providing an enable signal depending on the evaluation result.
- the release signal may be an airbag deployment signal that releases an airbag when it has been detected that a person is on the seat.
- the first decision value is set to a first value depending on a comparison of the first reflector response with a predetermined first comparison value of the first range and the second decision value depends on a comparison the second reflector response with a predetermined firstdemand ⁇ value of the second area set to the first value.
- a number of decision values having the first value are compared with a first number determined by the threshold rule.
- the comparison values of the first and second regions may differ. This already allows a weighting of the reflector responses of individual seating areas. Alternatively, the comparison values of the first and second areas are the same.
- the decision values of the ranges are set depending on whether the reflector responses exceed or fall short of the associated comparison value.
- the threshold rule requires a certain first number of decision values that are set after the comparisons. This ensures that the evaluation result is not falsified on the basis of individual extreme measured values.
- the first decision value is set to a second value depending on a comparison of the first reflector response with a predetermined second comparison value of the first range and the second decision value depends on one Comparison of the second reflector response with a predetermined second comparison value of the second area is set to the second value.
- a number of decision values which have the second value are then compared with a second number determined by the threshold value rule.
- the first decision value + r is set to a weighted with a predetermined weighting factor of the first area value of the first reflector response and the second decision value to one, with a predetermined weighting factor of second range • weighted value of the second reflector response is set.
- a sum of the decision values is then compared with a sum value determined by the threshold rule.
- a third reflector response of a third region of the seat is also detected in method step (a).
- the first decision value is set to a first value depending on a comparison of the first reflector response with a predetermined first comparison value of the first area and the second decision value depends on a comparison of a combined second and third reflector response with a predetermined group comparison value
- step (c) finally, the second decision value is compared with a group value determined by the threshold rule, and a warning signal is provided depending on the first decision value
- This refinement makes it possible to recognize a specific spatial characteristic of the reflector responses.
- a special characteristic is caused, for example, by a person sitting on an edge of the seat. In this case, only the reflectors in the • ⁇ p 20 area of the edge are covered. A group evaluation of the reflector responses in this area makes it possible to recognize such a specific seating position. Additional safety is achieved by evaluating the other reflector responses as well. Assign these as well
- a specific seating position out, for example, the fact that they are not covered, it can be displayed on the warning signal a hazard to the person.
- Such a combined evaluation method can comprise, for example, the following method steps:
- a combination of different evaluation methods has the advantage that an even more secure classification of occupancy of a seat is made possible.
- a correlated warning signal may also be displayed if clear classification is possible, but it is determined that a person is in a dangerous seating position, for example.
- the warning signal can thus be used to display additional information which is obtained by correlating the evaluation results of different evaluation methods.
- the predetermined areas of the seat have reflectors which reflect a high-frequency signal.
- the reflector responses correspond to a signal level of the reflected signal.
- Figure 1 is a schematic representation of a system for seat occupancy detection
- FIG. 2 shows a block diagram of an evaluation device according to the present invention
- Figure 3 reflector responses of a first exemplary
- Figure 4 reflector responses of a second exemplary
- FIG. 1 shows a schematic representation of a system for seat occupancy detection using high-frequency signals.
- a seat 1 is illuminated by an RF transmitter in a base station 2 with a high-frequency electromagnetic wave field 3.
- the seat 1 has, at different locations, a plurality of reflectors 4, 5, 6, 7, which reflect the HF wave field 3.
- the reflectors 4, 5, 6, 7 can return the reflected RF wave fields 4a, 5a, 6a, 7a modulated.
- Reflected RF wave fields 4a, 5a, 6a, 7a are received by an RF receiver in the base station 2. This results in an assignment of the reflected RF wave fields 4a, 5a, 6a, 7a to the individual reflectors 4, 5, 6 , 7 possible.
- FIG. 2 shows a block diagram of an evaluation device 10 shown only schematically, according to an exemplary embodiment of the present invention.
- the evaluation device 10 is used to evaluate a plurality of Reflector responses of a system for seat occupancy detection, as shown for example in Figure 1.
- the evaluation device 10 may be integrated in the base station 2 shown in FIG. 1 or may alternatively be connected to it as an externally formed device.
- the evaluation device 10 according to the invention can advantageously also be formed as part of an airbag control device (not shown).
- the evaluation device 10 has a detection device 12, a determination device 13 and a classification device 14.
- the detection device 12 is configured to detect a first reflector response 16a of a first area of a seat and a second reflector response 16b of a second area of the seat.
- the reflector responses 16a, 16b detected by the detection device 12 are forwarded to the determination device 13 as detected reflector responses 17a, 17b.
- the determination device 13 is used to determine a first decision value 18a from the first detected reflector response 17a and a second decision value 18b from the second detected reflector response 17b.
- the decision values 18a, 18b are determined according to predetermined determination rules.
- the determination rules can be adapted to the individual areas of the seat from which the reflector responses originate.
- the decision values 18a, 18b determined by the detection device 12 are forwarded to the classifier 14.
- the classification device 14 determines an evaluation result from the decision values 18a, 18b.
- the classification device 14 classifies decision values for this purpose 18a, 18b according to a threshold rule and provides the evaluation result according to the classification.
- an enable signal in the form of an airbag trigger signal 19a and a warning signal 19b are forwarded depending on the evaluation result.
- the evaluation result represents a classification of a person sitting on the seat, for example, in the categories one-year-old child in a child seat, a light adult, a middle-heavy adult, etc.
- This classification is determined by the evaluation device 10 by means of special methods. These methods are implemented as determination rules in the determination device 13 and as a threshold value rule in the classification device 14.
- the reflector responses 16a, 16b which correspond to the level of the reflected RF radiation received at the base station of the system for seat occupancy detection, serve as the basis of the classification. s®
- the first reflector response 16a may be the reflected RF wave field 4a shown in FIG. 1 and the reflected RF wave field 5a may be the second reflector response 16b.
- the detected reflector responses 17a, 17b can represent attenuation thicknesses which were determined from the RF wavefields 4a, 5a.
- the reflector responses 16a, 16b may already be attenuation thicknesses which were determined from the RF wavefields 4a, 5a and forwarded by the base station to the detection device 12.
- the detected reflector responses 17a, 17b can correspond to the reflector responses 16a, 16b in this case.
- the airbag deployment signal 19a and the warning signal 19b can be used to control and / or release a non-illustrated airbag in the figures.
- the evaluation result can also be directly output or further processed. to be worked.
- a single evaluation signal or a plurality of evaluation signals can be provided, which can be provided, for example, by corresponding safety systems in a vehicle, such as a restraint (airbag, belt). etc.) are further processed.
- different methods for evaluating the reflector responses 16a, 16b can be realized in the evaluation device 10.
- the different methods are distinguished by different determination rules and different threshold rules.
- the reflector responses here correspond to the damping thicknesses described with reference to FIG.
- the evaluation result is determined by means of a threshold value evaluation of the attenuation thicknesses of the individual reflectors.
- the method is described using the example of a small adult sitting in a normal position on a passenger seat.
- the front-passenger seat is monitored by the seat occupancy detection system.
- FIG. 3 shows damping thicknesses of various reflectors of the passenger seat on which the small adult sits in normal position.
- the individual reflectors L, HL, HR, MM, VL, VR of a seat are applied.
- the reflector L may be the reflector 7 arranged in the backrest, the reflectors designated HL and HR arranged in a rear region of the seat surface Reflector 6, the reflectors designated ML and MR correspond to the arranged in a central region of the seat Re ⁇ reflector 5 and denoted by VL and VR reflectors arranged in a front region of the seat Ref reflector 4 correspond.
- x [L, HL, HR, MM, VL, VR] designates the various reflectors.
- the reflector HL an attenuation value D (HL) 4.5
- the reflector HR an attenuation value D (HR) 3
- a damping thickness D (x)> 2.5 results in at least two of the reflectors L, HL, HR, MM, VL, VR and a damping thickness D (x)> 2.0 at least one further Reflector L, HL, HR, MM, VL, VR to deploy the airbag.
- the rules of determination are identical for all areas of the seat.
- the determination rules include a comparison of the individual reflector responses with a predetermined first comparison value of 2.5 and a predetermined second comparison value of 2.0.
- the decision values assigned to the individual reflectors are set.
- the decision values may have flags that are set or contain the comparison value achieved.
- the decision values are then evaluated according to the threshold rule.
- the threshold value rule evaluates the number of decision values which indicate that the comparison values 2.5 and 2.0 are exceeded.
- the airbag trigger signal is output when at least two decision values indicate an exceeding of the comparison value 2.5 and at least one further decision value indicates an exceeding of the comparison value 2.0.
- the evaluation method leads to the release of the airbag, since the described threshold value rule is fulfilled.
- Attenuation thicknesses and defined by the number of threshold rule-making Entschei ⁇ values that exceed the reference values are selected by way of example 'and can be varied.
- different comparison values can be selected for different areas of the seat. Instead of exceeding a threshold value, reaching or falling below can also be evaluated.
- the total damping thickness is the sum of all damping thicknesses.
- a weighted total attenuation thickness SDD is formed from the total attenuation thickness and evaluated in accordance with a threshold value rule corresponding to the method.
- Yi each denotes an arbitrary weighting coefficient
- D (Xi) denotes a respective damping thickness
- the index i denotes the running width
- the determination rules include a weighting of the individual reflector responses.
- the weight depends on the area of the seat from which the reflector response originates.
- the threshold rule includes a comparison of the summed weighted reflector responses with a predetermined sum value. For example, with a total value greater than 12, the airbag is released.
- the sum value corresponds to a weighted total damping thickness SDD.
- the weighted total damping thickness SDD thus results in the case of the exemplary embodiment of FIGS. 1 and 3 as follows:
- a, b, c, d, e, f are different weighting factors y for the individual regions, from which the individual reflector responses (or damping thicknesses) D (L), D (HL), D (HR), D (MM), D (VL), D (VR).
- the weighted total damping thickness SDD 17.5 is thus greater than the sum value of 12 predetermined by the threshold value control. Thus, the total damping thickness rule is satisfied and, as a result, the airbag is released.
- a further exemplary embodiment of an evaluation method by means of correlation of the individual damping thicknesses will be described below.
- the attenuation thicknesses of individual reflectors, the attenuation thicknesses of reflector pairs or other groups of reflectors are correlated with one another. If certain correlation values are exceeded, the airbag is released.
- the method according to the invention is described in a limiting case, in which a small adult person sits on the front edge of the passenger seat.
- FIG. 4 shows damping thicknesses of the reflectors L, HL, HR, MM, VL, VR already described in FIG. 3 for the case in which a small adult person sits on the front edge of the passenger seat.
- the reflector HL a damping value D (HL) 1.8
- the reflector MM an attenuation value D (MM) 2.4
- the reflector VL an attenuation value D (VL) 2.4
- the two front reflectors VL, VR form a correlation pair whose attenuation thicknesses D (VL), D (VR) are correlated with one another and according to FIG a determination rule for the combined front portion of the seat with a predetermined comparison value are compared.
- the comparison value for the front region of the seat can be 6. If the sum of the damping thicknesses D (VL), D (VR) of the reflectors VL, VR is greater than 6, the airbag triggering signal can be set in accordance with a corresponding threshold value rule.
- a possible threshold rule may state that in addition to the airbag trigger signal, a warning signal is set if none of the remaining damping thicknesses D (x)> 2.5. To this end, the remaining reflector responses are compared with the value 2.5 in accordance with corresponding determination rules in order to obtain corresponding decision values for the remaining reflector responses.
- the airbag deployment signal is set since the following applies to the sum of the damping thicknesses D (VL), D (VR) of the reflectors VL, VR:
- the warning signal is set because no Dämpfungs ⁇ thickness D (x) of the other reflectors L, HL, HR, MM is greater than 2.5.
- a warning signal is provided.
- a warning lamp in the dashboard of the vehicle can be controlled via the warning signal. In this case, the warning lamp indicates a driving situation, since a triggering of the airbag is required despite the dangerous seating position.
- the evaluation results are weighted or correlated with each other unweighted from previously described evaluation methods. If a defined correlation value is exceeded, the airbag is released. If no clear statement can be made as to whether the airbag is to be released, then a corrected warning signal can be provided, via which, for example, a warning lamp in the dashboard is switched on.
- the airbag is not released, since only one damping thickness, namely the damping thickness D (VR) of the reflector VR, is greater than the defined, first predetermined comparison value of 2.5.
- the airbag is released when the weighting factor is 1, since the weighted total damping thickness SDD is greater than 12.
- the airbag is released and additionally the warning signal is set.
- a correlated airbag triggering signal can be set if at least one evaluation result or alternatively a plurality of evaluation results require a triggering of the airbag. Additionally or alternatively, the individual evaluation results can be weighted with different weighting factors in order to make individual evaluation methods more closely correlated to the individual evaluation results.
- the evaluation device can be realized as a discrete component, for example as an ASIC, processor or microcontroller, and can additionally be installed in an existing system for seat occupancy recognition, or in others
- Control units of the vehicle such as the Airbagan- control to be integrated.
- the described method can be implemented, for example, as a VHDL code and used for programming a chip.
- VHDL code used for programming a chip.
- the schematic structure of a seat in Figure 1 and the arrangements of the sensors only beispiel ⁇ be understood. It is understood that in the region of the seat also more or less or no sensors can be provided. The same applies to the backrest.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Air Bags (AREA)
- Catching Or Destruction (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05767953A EP1763458A1 (de) | 2004-07-05 | 2005-07-05 | Auswerteverfahren und auswertevorrichtung für ein system zur sitzbelegungserkennung |
US11/631,775 US20080077546A1 (en) | 2004-07-05 | 2005-07-05 | Evaluation Method and Evaluation Device for a System of Seat Occupancy Detection |
JP2007519789A JP2008505333A (ja) | 2004-07-05 | 2005-07-05 | 座席占有状態識別システムのための評価方法および評価装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004032473.5 | 2004-07-05 | ||
DE102004032473A DE102004032473B4 (de) | 2004-07-05 | 2004-07-05 | Auswerteverfahren und Auswertevorrichtung für ein System zur Sitzbelegungserkennung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003201A1 true WO2006003201A1 (de) | 2006-01-12 |
Family
ID=35044699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/053187 WO2006003201A1 (de) | 2004-07-05 | 2005-07-05 | Auswerteverfahren und auswertevorrichtung für ein system zur sitzbelegungserkennung |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080077546A1 (de) |
EP (1) | EP1763458A1 (de) |
JP (1) | JP2008505333A (de) |
KR (1) | KR20070038537A (de) |
CN (1) | CN1980820A (de) |
DE (1) | DE102004032473B4 (de) |
WO (1) | WO2006003201A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT511497B1 (de) | 2011-05-31 | 2013-02-15 | Forschungsgesellschaft Der Fh Kaernten Gmbh | Verfahren und anordnung zur erkennung einer sitzplatzbelegung |
DE102013201836A1 (de) | 2013-02-05 | 2014-08-07 | Continental Teves Ag & Co. Ohg | Verfahren und Vorrichtung zur Anwesenheitserkennung von Objekten in einer Fahrgastzelle eines Fahrzeugs |
DE102015215408A1 (de) * | 2015-08-12 | 2017-02-16 | Digades Gmbh Digitales Und Analoges Schaltungsdesign | Annäherungssensor und Verfahren zum Erkennen einer Annäherung an ein Fahrzeuginnenverkleidungsteil eines Fahrzeugs |
JP6399414B2 (ja) | 2016-10-03 | 2018-10-03 | 本田技研工業株式会社 | 乗員検知システム |
DE102018222655A1 (de) * | 2018-12-20 | 2020-07-09 | Volkswagen Aktiengesellschaft | Verfahren und Vorrichtung zum Feststellen einer Verschmutzung einer Oberfläche, Reinigungsvorrichtung, Materialanordnung, Fahrzeugsitz und Fahrzeuginnenverkleidung |
US20230294705A1 (en) * | 2022-03-21 | 2023-09-21 | GM Global Technology Operations LLC | Occupant detection system for determining position in a vehicle based on coarse-grained localization |
Citations (3)
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WO2004045915A1 (de) * | 2002-11-20 | 2004-06-03 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
WO2004045918A1 (de) * | 2002-11-20 | 2004-06-03 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
WO2004045917A1 (de) * | 2002-11-20 | 2004-06-03 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
Family Cites Families (9)
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US5482314A (en) * | 1994-04-12 | 1996-01-09 | Aerojet General Corporation | Automotive occupant sensor system and method of operation by sensor fusion |
EP0787998A3 (de) * | 1996-02-02 | 1998-05-20 | f+g megamos Sicherheitselektronik GmbH | Mikrowellensensorsystem für die Überwachung von Räumen |
DE10124915A1 (de) * | 2001-05-22 | 2002-12-12 | Bosch Gmbh Robert | Anordnung zur Erfassung des Belegungszustandes eines Sitzes |
DE10238222A1 (de) * | 2002-08-21 | 2004-03-04 | Robert Bosch Gmbh | Verfahren und Anordnung zur Erfassung des Belegungszustandes eines Sitzes |
DE10254202B4 (de) * | 2002-11-20 | 2006-05-18 | Siemens Ag | Vorrichtung und Verfahren zum Erkennen der Sitzbelegung in einem Fahrzeug |
WO2004083004A1 (de) * | 2003-03-21 | 2004-09-30 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
DE10341578B4 (de) * | 2003-09-09 | 2008-02-07 | Siemens Ag | Vorrichtung und Verfahren zum Erkennen eines Objekts oder einer Person auf einem Sitz eines Verkehrsmittels |
US7209033B2 (en) * | 2003-09-09 | 2007-04-24 | Siemens Aktiengesellschaft | Device and method for detecting an object or a person on a seat of vehicle |
US7034670B2 (en) * | 2003-12-30 | 2006-04-25 | Lear Corporation | Method of occupancy classification in a vehicle seat |
-
2004
- 2004-07-05 DE DE102004032473A patent/DE102004032473B4/de not_active Expired - Fee Related
-
2005
- 2005-07-05 EP EP05767953A patent/EP1763458A1/de not_active Withdrawn
- 2005-07-05 CN CNA2005800227438A patent/CN1980820A/zh active Pending
- 2005-07-05 JP JP2007519789A patent/JP2008505333A/ja active Pending
- 2005-07-05 KR KR1020077002452A patent/KR20070038537A/ko not_active Application Discontinuation
- 2005-07-05 US US11/631,775 patent/US20080077546A1/en not_active Abandoned
- 2005-07-05 WO PCT/EP2005/053187 patent/WO2006003201A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004045915A1 (de) * | 2002-11-20 | 2004-06-03 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
WO2004045918A1 (de) * | 2002-11-20 | 2004-06-03 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
WO2004045917A1 (de) * | 2002-11-20 | 2004-06-03 | Siemens Aktiengesellschaft | System und verfahren zum erkennen der sitzbelegung in einem fahrzeug |
Also Published As
Publication number | Publication date |
---|---|
JP2008505333A (ja) | 2008-02-21 |
EP1763458A1 (de) | 2007-03-21 |
KR20070038537A (ko) | 2007-04-10 |
US20080077546A1 (en) | 2008-03-27 |
DE102004032473B4 (de) | 2008-12-18 |
DE102004032473A1 (de) | 2006-02-02 |
CN1980820A (zh) | 2007-06-13 |
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