EP3607532A1 - Verfahren zum betreiben eines unfalldatenspeichers für ein kraftfahrzeug und unfalldatenspeicheranordnung - Google Patents
Verfahren zum betreiben eines unfalldatenspeichers für ein kraftfahrzeug und unfalldatenspeicheranordnungInfo
- Publication number
- EP3607532A1 EP3607532A1 EP18720094.4A EP18720094A EP3607532A1 EP 3607532 A1 EP3607532 A1 EP 3607532A1 EP 18720094 A EP18720094 A EP 18720094A EP 3607532 A1 EP3607532 A1 EP 3607532A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accident
- time
- data
- memory
- reference time
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/10—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time using counting means or digital clocks
Definitions
- the invention relates to a method for operating an accident-data memory for a motor vehicle and an accident ⁇ data storage device for performing such a method.
- Accident data storage for motor vehicles are basically known, typically storing data such as speed, steering angle and acceleration immediately before and after a known accident. As a result, an accident can be reconstructed and, for example, the guilt or innocence of a respective driver can be determined.
- the identification of possible technical problems are Un ⁇ case data storage so far come in the future much more frequently than used.
- Important information for reconstructing an accident is the time at which an accident occurred and to which certain stored values apply. Thus, it is important to provide a precise time reference for an accident data store.
- GNSS Global Navigation Satellite System
- Satelli ⁇ tennavigationssystem a time from a satellite navigation system is not always available and not always reliable.
- the invention relates to a method for operating an accident data memory for a motor vehicle.
- the method comprises the following steps:
- a separate time base for the accident data storage can be provided.
- it can be operated and continued independently of the reference time, i. it can be continued even if reception of satellite navigation signals is currently unavailable. This may for example be the case when the vehicle is in a tunnel, in a garage or between tall buildings.
- the nonvolatile memory is a memory which stores the data stored thereon ⁇
- the synchronization can be done for example by means of Network Time Protocol, NTP, Precision Time Protocol, PTP, or an AUTOSAR time synchronization. Such protocols or techniques have proven to be practical.
- the accident data may relate, for example, to a period of at most 10 seconds before the accident event is recognized, and not more than 10 seconds after the accident event has been detected. These are typical data which is usefully zoom pull for evaluating a Unfal ⁇ lereignisses.
- integrity data relating to the reference time can also be generated.
- integrity data is data indicating the reliability of the reference time generated from satellite navigation.
- Integ ⁇ rticianschal are preferably stored in the nonvolatile memory.
- information about the reliability of this time can also be stored in the non-volatile memory and thus taken into account in the evaluation of the accident. For example, if the Un ⁇ falling point in time only poor integrity before, this can be taken into account in the evaluation of the accident.
- the integrity data may in particular be based wholly or partly on a satellite-based supplementary system, also referred to as SBAS.
- an integrity level is calculated based on integrity data present before the reference time has failed and is also stored when an accident event is detected.
- the reliability can be evaluated even in case of failure of the reference time and taken into account in the reconstruction of an accident.
- the system time can be advantageously used in a watch of a leg holding the Un ⁇ case data storage unit, such as an accident data memory device to be managed.
- the system time can also be managed in a clock of the accident data memory. If the reference time fails, the system time can be updated in particular by means of a number of decaying storage elements.
- Such memory elements may, for example, be capacitors, coils or other elements which change a measurable quantity in a defined manner. In this way, even if the reference time fails, the system time can be updated with a defined accuracy.
- the memory elements can be calibrated in particular in the presence of the reference time. In particular, this can be done con ⁇ continuously, so that the last calibration is not far back in case of failure of the reference time.
- the calibration can take place, in particular, taking into account one or more of the following parameters:
- the age may be, in particular, an age of the decaying memory element or a corresponding unit.
- Data concerning the calibration are preferably stored in the non-volatile memory. This can in particular also be independent of the accident event. For example, such data can therefore also be stored continuously. This allows the calibration to be traced at any time. However, the data relating to the calibration can also be stored in response to an accident event.
- a plurality of memory elements with different time constants and / or different types can be used.
- a continuation of a time on different time scales, ie with different downtimes can be achieved reliably.
- memory elements with a short time constant can be used, while for long downtime memory elements with long time constants can be used.
- Typical examples of memory elements are capacitors or coils, so that, for example, correspondingly different types can be used. This can also be a balance between the memory elements of different types.
- capacitors such as capacitors can be used with different dielectrics or different electrode surfaces.
- raw data of the satellite navigation system is stored in the non-volatile memory. This allows a more accurate re ⁇ construction time time of the accident than by Fort Write ⁇ a time in the vehicle.
- the invention further relates to a Cincinnati, Ohio, ⁇ cheran Aunt.
- the accident data storage device has a nonvolatile memory.
- the accident data storage device has a clock for managing a system time.
- the accident data storage arrangement has an electronic control device which is configured to carry out a method according to the invention.
- the accident data storage arrangement may further comprise a satellite navigation module for generating the reference time. This allows a particularly high integration and a common power supply. It should be noted, however, that alternatively also a external satellite navigation module can be used to generate the Refe ⁇ renzzeit.
- the invention furthermore relates to a non-volatile computer-readable storage medium containing program code, in the execution of which a method according to the invention is carried out.
- a method according to the invention is carried out.
- all embodiments and variants described herein can be used.
- the above-mentioned information of a satellite-based supplementary system may in particular contain integrity information on the atmosphere and on the satellite system or satellite navigation system.
- a time of a unit in which the accident data memory is included in particular can be syn chronized ⁇ an integrity time.
- an integrity of the synchronization can be determined in order to be able to update the integer time and their integrity level in the event of missing satellite navigation signal.
- the above-mentioned memory elements can also provide for a time which is immediately available when the system is started up and does not depend on the satellite reception.
- a time can be used, which is advantageous because even an accident can happen until the reception of satellite navigation data.
- the above-mentioned influencing variables on the calibration can also be stored in the non-volatile memory in order to be able to carry out any necessary corrections in the evaluation of the data in the event of an accident. For example, this may be required if the calibration has not been completed.
- a system for time determination including a satellite navigation receiver is integrated into a unit which also contains the accident data memory. This ensures that in case of an accident the important time information can still be delivered and also be supplied with emergency power. In addition, it is possible to certify the unit as such without having to completely certify a vehicle. In addition to the raw data already mentioned, which can be stored, external correction information can also be used to subsequently retrieve further information from this data offline. This is particularly useful when there is no reception of a satellite-based supplementary system.
- FIG. 1 a vehicle with an accident data storage arrangement.
- FIG. 1 shows a vehicle 10 purely schematically.
- the vehicle 10 has a purely schematically Darge ⁇ Asked accident data storage arrangement 20.
- the accident data storage arrangement 20 has a satellite navigation module 30. At this an outdoor antenna 35 is attached.
- the external antenna 35 is configured to receive signals from only schematically illustrated satellites 31, 32, 33, 34. Thus, in particular a location of the vehicle 10 can be determined.
- a time as a reference time can be determined by the satellite navigation module 30 based on the satellite signals.
- the accident data storage arrangement 20 also has a clock 40. This is used to manage a system time.
- the system time is synchronized with the continuously detected by the satellite navigation module 30 reference time as long as the Re ⁇ conference time is available.
- the clock 40 further includes a number of non-illustrated evanescent memory elements in the form of a plurality of different capacitors. These are continuously calibrated as long as the reference time 30 is available. If the reference time 30 are not available, game example because the vehicle 10 is at ⁇ in a tunnel or in a garage, and therefore no signals from the satellites 31, 32, 33, 34 can be received, then the system time in the clock 40 updated using the memory links. For this purpose, behave ⁇ to each known decay and in particular the respective time constant of each storage element to resort.
- the accident data storage device 20 further includes a nonvolatile memory 50.
- this non-volatile Memory 50 data can be stored so that they are read again independently of a power supply.
- the accident data storage arrangement 20 has an electronic control device 60. This is configured to perform a method according to an embodiment of the invention.
- the non-volatile memory 50 and the controller 60 may be considered together as an accident data memory 25.
- accident data is stored in the non-volatile memory 50.
- These are, for example, data from acceleration sensors, steering wheel angle sensors or other data that can be helpful in reconstructing an accident.
- Such data relate to a period of 10 seconds before the accident until 10 seconds after the accident.
- an accident can be detected by the fact that a control unit has triggered an airbag.
- the system time from the clock 40 is stored in the nonvolatile memory 50.
- an accurate value for the time at which the accident happened can be stored in the nonvolatile memory 50.
- the satellite navigation module 30 also continuously generates integrity data relating to the integrity of the respective reference time. These data are also stored in the non-volatile memory 50, so that the In ⁇ tegrtician the respective time can be reconstructed.
- the integrity data is based in particular on a satellite-based supplementary system.
- steps of the method according to the invention can be carried out in the order given. However, they can also be executed in a different order. In one of its embodiments, for example with a specific set of steps, the method according to the invention can be carried out in such a way that no further steps are carried out. However, in principle also further steps can be carried out, even those which are not mentioned.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Navigation (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017205793.9A DE102017205793A1 (de) | 2017-04-05 | 2017-04-05 | Verfahren zum Betreiben eines Unfalldatenspeichers für ein Kraftfahrzeug und Unfalldatenspeicheranordnung |
| PCT/DE2018/200030 WO2018184640A1 (de) | 2017-04-05 | 2018-03-27 | Verfahren zum betreiben eines unfalldatenspeichers für ein kraftfahrzeug und unfalldatenspeicheranordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3607532A1 true EP3607532A1 (de) | 2020-02-12 |
Family
ID=62062786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18720094.4A Pending EP3607532A1 (de) | 2017-04-05 | 2018-03-27 | Verfahren zum betreiben eines unfalldatenspeichers für ein kraftfahrzeug und unfalldatenspeicheranordnung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11636718B2 (de) |
| EP (1) | EP3607532A1 (de) |
| CN (1) | CN110494896A (de) |
| DE (2) | DE102017205793A1 (de) |
| WO (1) | WO2018184640A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3862791B1 (de) * | 2020-02-07 | 2025-03-26 | Harman Becker Automotive Systems GmbH | Telematiksteuerungseinheit, die positionierungsdaten mit integritätsniveau bereitstellt |
| DE102020207009A1 (de) * | 2020-06-04 | 2021-12-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren und Vorrichtung zum Sichern von Daten für ein Fahrzeug |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120208557A1 (en) * | 2009-10-19 | 2012-08-16 | Carter Robert A | Location Reliability Determination |
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| US6493650B1 (en) * | 2000-01-27 | 2002-12-10 | Optimus Corporation | Device for automatic documentation of crash scenes |
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| AU2002324865A1 (en) * | 2001-09-06 | 2003-03-24 | Wtd Technologies, Inc. | Accident evidence recording method |
| FR2853093B1 (fr) * | 2003-03-25 | 2005-09-30 | Systeme de compensation des derives d'une horloge pour vehicule automobile | |
| US8291149B2 (en) | 2003-07-07 | 2012-10-16 | Hitachi Ulsi Systems Co., Ltd. | Storage device and storage system having a hard disk drive and flash memory |
| CN101187849A (zh) * | 2003-07-07 | 2008-05-28 | 日立超大规模集成电路系统株式会社 | 存储装置和存储系统 |
| JP3641750B2 (ja) * | 2003-07-16 | 2005-04-27 | 壮一 野村 | 地図経路等情報管理システム |
| JP4542801B2 (ja) * | 2004-03-11 | 2010-09-15 | セイコークロック株式会社 | 計時装置、計時システム及び計時方法 |
| DE102004012228A1 (de) * | 2004-03-12 | 2005-09-29 | Conti Temic Microelectronic Gmbh | Aufzeichnungsgerät für ein Fahrzeug und Verfahren zum Aufzeichnen von sensorisch und/oder messtechnisch erfassten Informationen zu Ereignissen in einem Fahrzeug |
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-
2017
- 2017-04-05 DE DE102017205793.9A patent/DE102017205793A1/de not_active Withdrawn
-
2018
- 2018-03-27 WO PCT/DE2018/200030 patent/WO2018184640A1/de not_active Ceased
- 2018-03-27 EP EP18720094.4A patent/EP3607532A1/de active Pending
- 2018-03-27 DE DE112018001880.6T patent/DE112018001880A5/de not_active Withdrawn
- 2018-03-27 US US16/500,222 patent/US11636718B2/en active Active
- 2018-03-27 CN CN201880023787.XA patent/CN110494896A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120208557A1 (en) * | 2009-10-19 | 2012-08-16 | Carter Robert A | Location Reliability Determination |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112018001880A5 (de) | 2020-03-12 |
| DE102017205793A1 (de) | 2018-10-11 |
| US20210056785A1 (en) | 2021-02-25 |
| CN110494896A (zh) | 2019-11-22 |
| US11636718B2 (en) | 2023-04-25 |
| WO2018184640A1 (de) | 2018-10-11 |
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