EP4309159A1 - Verfahren zur bestimmung der geschwindigkeit eines fahrzeugs bei einem unfall - Google Patents
Verfahren zur bestimmung der geschwindigkeit eines fahrzeugs bei einem unfallInfo
- Publication number
- EP4309159A1 EP4309159A1 EP22700137.7A EP22700137A EP4309159A1 EP 4309159 A1 EP4309159 A1 EP 4309159A1 EP 22700137 A EP22700137 A EP 22700137A EP 4309159 A1 EP4309159 A1 EP 4309159A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accident
- vehicle
- speed
- situation
- determined
- 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
-
- 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
- B60R21/013—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 collisions, impending collisions or roll-over
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J27/00—Safety equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
- B62J45/412—Speed sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
- B62J45/414—Acceleration sensors
Definitions
- the invention relates to a method for determining the speed of a vehicle in the event of an accident.
- the method according to the invention is suitable for determining the speed of a vehicle in the event of an accident.
- the current speed of the vehicle is determined and stored, preferably continuously and at cyclic intervals.
- the current speed determined last is saved in each case.
- the stored speed is assigned to a specific driving condition of the vehicle before the accident occurred.
- an accident indicator signal is determined and an accident is concluded if the accident indicator signal is outside a permissible value range.
- the accident indicator signal is determined in particular using the vehicle's own sensors.
- the accident indicator signal is, for example, one or more driving dynamics state variables, in particular acceleration values, with an accident situation being inferred if one or more of these driving dynamics state variables exceed a limit value.
- it is sufficient to determine and evaluate only a single accident indicator signal for example the vehicle's longitudinal acceleration or the vehicle's lateral acceleration.
- it is also possible to determine and evaluate a number of different accident indicator signals for example the longitudinal vehicle acceleration and the vehicle lateral acceleration, with an accident situation being concluded from the combination of a number of accident indicator signals.
- the accident indication signal can optionally also be generated in the vehicle in a different way.
- the accident indication signal is linked to the deployment of an airbag in the vehicle, for example, and depends on the evaluation of an environment sensor system in the vehicle, in particular a camera recording the environment.
- the speed of the vehicle is set to the speed that was stored immediately before the accident.
- This procedure has the advantage that a possibly unstable situation of the vehicle caused by the accident does not lead to a falsification of the vehicle speed due to faulty wheel speed signals. Possible skidding, sideways slipping or collision of the vehicle causing impairment or malfunction of one or more wheel speed sensors can be ignored. Instead, the last stored vehicle speed is used, which the vehicle assumed before the accident occurred and which was accordingly determined when the wheel speed sensor system in the vehicle was fully functional. A possible impairment of a speed sensor, in particular a wheel speed sensor, is not taken into account.
- the last stored vehicle speed which was determined in the normal state of the vehicle before the accident occurred, represents a sufficiently accurate approximation of the vehicle speed immediately after the accident occurred.
- the speed may change as a result of the accident, it may still be sufficient for various purposes to use the vehicle speed stored immediately before the accident occurred for an evaluation.
- it may be useful to use the speed of the vehicle involved in the accident as a measure of the severity of the accident. After an accident situation has been determined by evaluating the vehicle sensors, the vehicle speed can be an indicator of the severity of the accident.
- the vehicle speed can be stored for purposes of proof and/or for the purpose of comprehensibility, for example in a control unit of the vehicle. This makes it possible to subsequently determine the course of the accident and to determine driving dynamics information at the time the accident occurred.
- the speed of the crashed vehicle can also be the basis for generating an emergency call signal.
- an emergency call signal is sent out automatically, for example to alert an emergency service.
- the emergency call signal can contain information about the current position of the vehicle involved in an accident. It may be expedient to send out different emergency call signals depending on the severity of the accident, based on the vehicle speed that was stored immediately before the accident occurred. For example, at speeds below a speed limit, a less serious accident category is assumed, which, for example, has a lower priority when alerting an emergency service. Above the speed limit, on the other hand, a serious accident must be assumed, which justifies the immediate initiation of rescue measures. Accordingly, the emergency signal based on a vehicle speed above the speed limit is treated with a higher priority.
- a check is made as to whether the accident situation continues. Only in this case is the speed of the vehicle set to the speed stored immediately before the accident occurred. If, on the other hand, it is determined that the accident situation does not last, there is generally no reason to set the speed to the speed stored before the accident occurred. In fact, in this case it can be expedient to determine the current vehicle speed from the vehicle sensor system.
- the gravitational acceleration acts in the direction or approximately in the direction of the vehicle's transverse axis instead of the vehicle's vertical axis as in an upright, non-accident position, which can be determined via a corresponding value of the vehicle's transverse acceleration. If the motorcycle is righted again, the proportion of the vehicle's lateral acceleration that is due to gravity changes. When the motorcycle is upright, the gravitational acceleration is again directed coaxially or approximately coaxially to the vertical axis of the vehicle in the vehicle-fixed coordinate system of the sensors.
- the direction of the gravitational acceleration in the vehicle-fixed coordinate system of the vehicle sensors is basically suitable as an accident indicator signal and is used to evaluate whether an accident situation has occurred. This applies in particular to single-track vehicles such as motorcycles, scooters, electrically assisted bicycles or non-motorized single-track vehicles.
- the invention is advantageously used in single-track vehicles, but it may also be used in two-track vehicles such as motor vehicles.
- an accident situation is only assumed above a minimum speed.
- the criterion of the minimum speed can be used to distinguish between what is in principle a non-critical situation in which the single-track vehicle falls over and an accident situation. Below the minimum speed of 5 km/h, for example, the vehicle moves very slowly or is stationary, so that even if it falls over, there is no serious accident situation.
- the invention also relates to a control device for carrying out the method described above.
- the control unit contains means that are designed to carry out the method.
- the means include at least one memory unit, at least one computing unit, a control unit input and a control unit output.
- Sensor signals from a sensor system for detecting state variables of the vehicle, for example the current vehicle speed and acceleration variables or variables representing the environment, are fed to the control device.
- the vehicle speed sought can be determined in the control unit on the basis of the state variables.
- the invention also relates to a vehicle, preferably a one-track vehicle, optionally a two-track vehicle, with a control device as described above and with a sensor system for detecting driving-dynamic state variables, in particular the vehicle speed and one or more acceleration parameters.
- the sensors generate sensor signals which can be fed to the control unit and are processed in the control unit.
- the invention also relates to a computer program product with a program code that is designed to carry out the method steps described above.
- the computer program product runs in the control unit described above.
- FIG. 1 is a perspective view of a motorcycle with a coordinate system fixed to the vehicle
- FIG. 2 shows a flow chart for carrying out the method for determining the speed in the event of an accident.
- a motorcycle 1 is shown as an example of a vehicle, which is equipped in the usual way with a sensor system for detecting driving dynamics state variables and a control unit for processing the sensor signals of the sensor system and for controlling one or more actuators, in particular for controlling an actuator in the brake system for modulating the hydraulic brake pressure.
- the current vehicle speed can be determined via the sensor system of the motorcycle 1 and also various acceleration parameters, which are at least the vehicle longitudinal acceleration and the vehicle lateral acceleration. If necessary, rotational driving state variables about one or more vehicle axles can also be considered, which can be detected with the sensors.
- 1 shows a coordinate system fixed to the vehicle, with the x-axis identifying the longitudinal axis of the vehicle, the y-axis identifying the transverse axis of the vehicle and the z-axis identifying the vertical axis of the vehicle.
- 2 shows a flowchart with which the vehicle speed of motorcycle 1 can be determined in the event of an accident. If the vehicle wheels of the motorcycle 1 lose contact with the ground in an accident due to the motorcycle tipping over, the vehicle speed can no longer be determined via a wheel speed sensor system. In this case, the vehicle speed can be approximately determined using the procedure described below.
- a first method step 10 which relates to a normal driving situation of the motorcycle before an accident, the speed of the motorcycle is determined using the vehicle's own sensors. This takes place continuously, with each speed value being stored in a memory unit of a control device and being continuously overwritten by the respective current speed value. The last, current speed is therefore always available in the memory unit in time with the ongoing speed determinations.
- a query is made as to whether the motorcycle is in an accident situation.
- This can be carried out using one or more vehicle-dynamics state variables, which are in particular one or more acceleration values.
- the state variables under consideration have the function of an accident indicator signal, which indicates an accident if the state variable under consideration lies outside a permissible value range.
- the acceleration due to gravity which is coaxial to the vehicle height or z-axis when the vehicle is upright or moving, is preferably used as the accident indicator signal.
- the gravitational acceleration in the sensor system shows a lateral acceleration component in the vehicle-fixed Y-axis due to the inclined position of the motorcycle, which, however, must not exceed a defined limit value.
- the vehicle lies on its side, so that the gravitational acceleration runs in the direction or approximately in the direction of the Y-axis fixed to the vehicle, which can be determined using the lateral acceleration value of the sensor system fixed to the vehicle.
- the lateral acceleration sensor provides a corresponding increased value, which can be determined in the query according to method step 11.
- step 11 If the query in method step 11 shows that the driving dynamics state variable under consideration is not outside the permissible value range, so that there is also no accident situation, the No branch (“N”) is followed to return to step 10 and the method is started from the beginning. If, on the other hand, the driving dynamics state variable under consideration is outside the permissible value range, then an accident situation has occurred, and the Yes branch ("Y") is followed by advancement to the next method step 12, in which a query is carried out as to whether the vehicle should leave the vehicle after a defined period of time is still in the accident situation. This can be done by checking the lateral acceleration value again.
- the lateral acceleration sensor supplies an increased value, since the gravitational acceleration acts in the direction of the lateral axis y fixed to the vehicle. If this is the case, it can be assumed that the accident situation is ongoing, and following the yes branch, advance is made to the next method step 13 . If, on the other hand, the query in method step 12 shows that the value of the transverse acceleration has fallen below a limit value, it can be assumed that the motorcycle has been brought back into the upright position and the accident situation no longer lasts. In this case, following the No branch, a return is made to the beginning of the method according to step 10 .
- a first speed query is carried out in method step 13 .
- the speed value last stored in step 10, which was generated immediately before the accident occurred, is used for this purpose. If the query in step 13 shows that the speed exceeds an upper speed limit value, which is 55 km/h, for example, the yes branch is followed to step 14 and an emergency call signal is generated. Due to the relatively high vehicle speed, this can be done with increased urgency be provided in order to initiate immediate rescue measures.
- the emergency call signal also contains position information about the accident site.
- step 13 If the query in step 13 shows that the vehicle speed last stored does not exceed the upper speed limit value, the No branch is followed to step 15, in which a query is carried out as to whether the speed exceeds a lower speed limit value that is lower than the upper one Speed limit and for example at 10 km / h. If this is not the case, the vehicle speed when the accident occurs is so low that an accident of significant severity is not assumed. In this case, no emergency call signal is generated and following the No branch, a return is made to the start of the method according to step 10. Otherwise, the Yes branch is advanced to step 16, in which an emergency signal is also generated, but due to the lower
- Vehicle speed is not provided with the same high priority as in step 14. This can have the consequence, for example, that an emergency vehicle is not immediately ordered to the scene of the accident, but that other accidents that have a higher urgency, for example due to a higher accident severity, are treated with priority.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Alarm Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021202529.3A DE102021202529A1 (de) | 2021-03-16 | 2021-03-16 | Verfahren zur Bestimmung der Geschwindigkeit eines Fahrzeugs bei einem Unfall |
| PCT/EP2022/050266 WO2022194430A1 (de) | 2021-03-16 | 2022-01-07 | Verfahren zur bestimmung der geschwindigkeit eines fahrzeugs bei einem unfall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4309159A1 true EP4309159A1 (de) | 2024-01-24 |
Family
ID=80112411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22700137.7A Pending EP4309159A1 (de) | 2021-03-16 | 2022-01-07 | Verfahren zur bestimmung der geschwindigkeit eines fahrzeugs bei einem unfall |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4309159A1 (de) |
| DE (1) | DE102021202529A1 (de) |
| WO (1) | WO2022194430A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7186867B2 (ja) * | 2018-09-24 | 2022-12-09 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 自動二輪車を監視するための方法および装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4345948B2 (ja) * | 2000-05-19 | 2009-10-14 | 本田技研工業株式会社 | 二輪車の事故自動通報装置 |
| DE102008042963A1 (de) | 2008-10-20 | 2010-04-22 | Robert Bosch Gmbh | Verfahren zur Einstellung eines Bremssystems eines Fahrzeugs |
| ES2385154B1 (es) * | 2010-12-23 | 2013-05-23 | Francisco Javier LOBATO RAPOSO | Dispositivo y procedimiento de localización y orientación para vehículos en casos de emergencia, especialmente destinado en su aplicación a motocicletas. |
| EP3345792B1 (de) * | 2014-06-24 | 2019-09-11 | Robert Bosch Gmbh | Vorrichtung zur automatischen alarmierung und verfahren zur automatischen alarmierung |
| KR101882478B1 (ko) * | 2017-03-06 | 2018-07-30 | 주식회사 아이오티스퀘어 | 센서를 이용한 이륜차의 위험 상황 감지 시스템 및 이를 이용한 응급 구난 신호 전송 방법 |
| DE102018213755A1 (de) * | 2018-08-15 | 2020-02-20 | Robert Bosch Gmbh | Verfahren zum Betreiben eines motorisierten Zweirads, insbesondere eines Motorrads, sowie Computerprogramm zur Durchführung des Verfahrens |
-
2021
- 2021-03-16 DE DE102021202529.3A patent/DE102021202529A1/de active Pending
-
2022
- 2022-01-07 WO PCT/EP2022/050266 patent/WO2022194430A1/de not_active Ceased
- 2022-01-07 EP EP22700137.7A patent/EP4309159A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022194430A1 (de) | 2022-09-22 |
| DE102021202529A1 (de) | 2022-09-22 |
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