EP4097702A1 - Verfahren und vorrichtung zur erkennung des falls eines mobilen endgeräts - Google Patents
Verfahren und vorrichtung zur erkennung des falls eines mobilen endgerätsInfo
- Publication number
- EP4097702A1 EP4097702A1 EP21701277.2A EP21701277A EP4097702A1 EP 4097702 A1 EP4097702 A1 EP 4097702A1 EP 21701277 A EP21701277 A EP 21701277A EP 4097702 A1 EP4097702 A1 EP 4097702A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- movement
- rotation
- mobile terminal
- variables
- acceleration
- 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
- 238000000034 method Methods 0.000 title claims abstract description 51
- 230000001133 acceleration Effects 0.000 claims abstract description 49
- 238000011156 evaluation Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0407—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis
- G08B21/043—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons based on behaviour analysis detecting an emergency event, e.g. a fall
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/04—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses for indicating maximum value
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0888—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values for indicating angular acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P7/00—Measuring speed by integrating acceleration
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0438—Sensor means for detecting
- G08B21/0461—Sensor means for detecting integrated or attached to an item closely associated with the person but not worn by the person, e.g. chair, walking stick, bed sensor
Definitions
- the invention relates to a method and a device for monitoring and detecting the fall or fall of a mobile terminal, in particular a terminal that falls out of a holder on a vehicle.
- the present invention is therefore intended to create a method and a device that recognizes a fall or a fall of a mobile terminal device more quickly as a function of further boundary conditions and under further possible usage situations.
- the method described and claimed below, as well as a device that executes this method according to the invention, is set up to quickly detect the accident-related removal of a mobile device from a holder and to generate corresponding information that characterizes the fall or fall associated with the accident .
- rotation rate sensor variables and acceleration sensor variables of the mobile terminal are recorded.
- a rotation or rotation of the mobile terminal is detected by comparing the currently detected and / or integrated yaw rate sensor variables with past values and / or threshold values.
- a movement of the mobile terminal is recognized on the basis of the currently detected and / or integrated acceleration variables.
- a comparison with historical values and / or threshold values can optionally also be carried out here.
- the detection of an accident-related fall of the vehicle and / or the fall of the mobile terminal out of the holder then takes place on the basis of the detected rotation and the detected movement.
- the speed and / or the size of the movement can also play a role here in order to finally generate case detection information.
- the fall situation and thus the accident can be detected more quickly. Due to the special consideration of the rotation in the detection of the fall or the fall of the mobile device, compared to a pure fall detection the possibility to recognize the special situation in an accident of a two-wheeler. In addition, the speed of the rotation and the movement of the mobile terminal out of the holder can be used to classify the fall, which can be helpful for further measures, in particular emergency calls.
- the yaw rate sensor variables and / or the acceleration variables are already recorded before the accident or fall or fall to be detected.
- a plane of movement in which the vehicle or two-wheeler moves can be derived from this. It is thus possible to identify both a longitudinal direction x in which the vehicle is essentially moving forward and a transverse direction y as the lateral direction of movement, which can be identified, for example, when cornering or turning.
- an atypical deviation in the longitudinal and / or transverse direction can be an indication and thus a trigger for the detection of an accident depending on the mobile device being thrown out of the holder.
- the detection of an atypical rotation about the vertical axis z or an atypical movement of the mobile terminal in the z direction also implies a fall or a fall and can thus lead to the generation of fall information.
- the detection of the rotation is particularly advantageous if the method according to the invention integrates the yaw rate variable in at least one spatial direction and thus takes account of the rotation or rotation over time.
- a slow rotation can be distinguished from a fast rotation by comparing the integrated rotation variable obtained in this way with a corresponding first threshold value.
- a minimum rotational speed can thus be associated with the first threshold value, which must be reached in order to recognize the detection of the fall or an associated accident of the vehicle.
- it is also possible to classify the accident by taking into account the speed of rotation or rotation, for example, by using a plurality of first threshold values with which the particular integrated rotation variable is compared.
- the invention provides for the movement of the mobile terminal to be detected as a function of the detected acceleration variables.
- the cause is an unintentional removal of the mobile device from the holder, in particular if this acceleration does not take place in the direction of travel or in the longitudinal direction of the vehicle and / or has atypical values that are typical for a normal Driving activity does not occur.
- the currently detected or the integrated acceleration variable can be compared with one or more threshold values.
- the acceleration variance is formed in all three spatial directions and the value obtained in this way is compared with a second threshold value. If this shows that the entire acceleration variance exceeds the second threshold value within a specified period, e.g. within 0.1 s, it can be assumed that a sudden acceleration has taken place, which is associated with the mobile device being thrown out of the holder is.
- the spatial acceleration variables in relation to the plane of movement of the vehicle or two-wheeler can also be taken into account when the movement of the mobile terminal device is detected.
- the rotation rate sensor variables and / or acceleration variables of the movement of the vehicle before a possible fall or accident of the vehicle can be taken into account.
- the corresponding components in the longitudinal direction or transverse direction are used.
- the corresponding directional components in the direction of the vertical axis z can also be used, since this direction of movement would result in only minor changes in the corresponding sensor variable or its component during normal driving activity of the vehicle.
- the method can generate a classification of the fall information. For example, in the case of a particularly pronounced rotation or rapid movement, an abrupt fall of the vehicle or two-wheeler can be assumed. In order to request appropriate help, provision can therefore be made for the method to set up a radio link to an emergency based on the case information generated or the severity of the accident identified by the classification. Details about the accident can also be sent here, including GPS data or other information that is available.
- Figure 1 shows schematically a two-wheeler with a mobile terminal and a coordinate system in which the two-wheeler moves during normal driving activity.
- the block diagram of FIG. 2 shows a possible implementation of a device according to the invention.
- the flow charts in FIGS. 3 and 4 describe possible exemplary embodiments of the method according to the invention.
- Embodiments of the invention The description of the invention is based on a two-wheeled vehicle in the form of a bicycle 10, although other vehicles such as electric bicycles, motorcycles, e-scooters, prams, scooters or motor vehicles could also be equipped with this invention.
- a smartphone 20 In the present case of the bicycle 10, provision is made for a smartphone 20 to be provided as a mobile terminal which is attached to the handlebars of the bicycle 10.
- the smartphone 20 is used here, for example, as a navigation instrument and / or as a display of the driving dynamics parameters.
- the smartphone 20 uses the sensor values that are made available by the sensors available in the smartphone 20.
- the bicycle usually moves forward essentially on the roadway in the longitudinal direction x.
- the plane of movement is spanned by an additional lateral transverse direction y.
- a movement in the direction of the vertical axis z takes place, for example, in the context of ascents and descents.
- Further movements, which can have an effect in the direction of the vertical axis are generated by rotations in the direction of the x-axis or by uneven road surfaces. All of these movements in the direction of the d-axis can be distinguished from one another by characteristic magnitudes of the rate of change, ie the dz / dt. For example, driving up an uphill or downhill slope is associated with a longer time constant than tilting the bicycle to the side, essentially along the x-axis.
- bumps in the road are characterized by very small movements in the z-direction within a short period of time.
- the sensors within the smartphone 20 are aligned with their own coordinate system. By attaching the smartphone to the handlebar, it is therefore necessary to recalibrate the alignment in the coordinate system determined by the movement.
- the spatially resolved sensor variables of the yaw rate sensor or the acceleration sensor in the smartphone can be used to record this defined coordinate system during normal driving. Any deviations, for example in the z-direction, which go beyond a certain amount, in particular with regard to the time dependency, can thus be assessed as an indication of a fall of the bicycle.
- the order of magnitude in which the rate of change dz / dt is present in the direction of the z-axis must be taken into account in order to use this movement for the fall detection. It can thus be provided that the change in the z-direction has to be present for a sufficiently long time in order, for example, to distinguish the movement from a rough road surface.
- a smartphone 20 is shown schematically in FIG. 2, which has an evaluation unit 100.
- the evaluation unit 100 has a memory 110 in which various threshold values can be stored.
- the evaluation unit 100 also detects the spatially resolved sensor variables of a yaw rate sensor 120 and an acceleration sensor 130.
- the evaluation unit 100 can also detect other sensor variables if the smartphone has corresponding sensors or these can be read in by external sensors that are attached to the two-wheeler, for example. It is conceivable here, for example, that an inclination sensor supplies corresponding sensor variables about the increase in the ride on the bicycle, in particular the rate of incline. Such additional sensor sizes can increase the accuracy of the subsequent detection of a fall or accident by sharpening the underlying data.
- the evaluation unit 100 is explicitly informed of a crash that has occurred via a further connection by a separate module 140.
- the evaluation unit 100 can derive an even better classification of the accident based on the received sensor variables and, if necessary, forward a message to an emergency center 170.
- the method according to the invention which is carried out in the evaluation unit 100, can recognize and recognize an accident, a fall or even just the smartphone 20 being thrown out of the holder on the handlebar based on the yaw rate sensor variables and the acceleration variables generate a corresponding case information.
- This case information can then be forwarded to appropriate contact points 150 or 170 or can also be shown on a display 160. It is conceivable, for example, that a general emergency call 150 is made or a special emergency call point 170 is contacted.
- a derivation of the coordinate system is to be described, which defines the movement of the bicycle taken into account on the road.
- the spatially resolved yaw rate sensor variables and acceleration variables are recorded during normal driving activity of the vehicle or two-wheeler.
- a movement plane in the preferred x / y direction is derived from the sensor variables recorded in this way.
- the calibration of the coordinate system of the smartphone can be carried out based on these direction definitions.
- the definition of the movement plane can be used to identify whether the smartphone 20 is moving out of this movement plane, for example by being thrown out of the holder on the handlebar.
- a further step 240 it can be checked whether the detected sensor variables are sufficient to derive a movement plane in the x / y direction. If this is not the case, e.g. because the bicycle is currently climbing an incline or the sensor data is ambiguous or too fuzzy, the process of acquiring the sensor data can be repeated in step 200.
- a first step 300 spatially resolved sensor variables for the rate of rotation and the acceleration are recorded.
- provision is made in particular for the method to run on a smartphone which contains the corresponding sensors for yaw rate and acceleration and the required direction-dependent resolution.
- provision can be made to record a series of acceleration variables, e.g. over 10 samples at a sampling rate of 100 Hz
- ax, ay, az - ö ax T ö ay T ö az is the sum of the acceleration variance. If this acceleration variance a 2 a x, ay , az exceeds a predeterminable third threshold value SW 3 , an accident, an impact or a collision can be inferred, which is the cause of the smartphone being thrown out of the holder and thus causes the acceleration. If the acceleration variance is less than the third threshold value SW 3 , the method can be run through again with step 300 or can be ended.
- the yaw-rate sensor signals are recorded, at least in the longitudinal direction x and transverse direction y in relation to the plane of movement of the vehicle or its vehicle coordinate system.
- the yaw rate sensor signals in the direction of the vertical axis z, in particular its rate of change, can optionally be disregarded in order not to trigger any false triggering due to rapid handlebar rotations.
- the yaw rate sensor variables obtained in this way are integrated in the next step 330 in order to derive the rotation or the rotational movement of the smartphone therefrom.
- the acceleration signals can also be checked in step 330.
- a free fall can be recognized from the current acceleration variables also recorded in step 320, for example.
- the acceleration 2 norm or the vector norm of the acceleration can be generated in order to recognize whether the smartphone is falling.
- This variable can be compared with a second threshold value SW 2 (for example 100 mg in 100 ms) in order to derive the falling movement therefrom.
- SW 2 for example 100 mg in 100 ms
- it can be recognized from the individually or jointly integrated yaw rate sensor variables in comparison with corresponding first threshold values SWi , x or SWi , y (based on the individual directional components) or SWi , xy (based on the direction vector in the xy direction), Whether the smartphone is rotating fast enough to detect it being thrown out of the holder and thus a noticeable fall or accident of the bicycle.
- the detection of the falling smartphone can be used in step 340 to verify the process.
- a combination of both conditions can also be used, ie the presence of a corresponding rotation and a free fall, with the two individual features being able to be dynamically linked. It can thus be provided that if the acceleration variance is small, a smaller rotation or rotation is detected must to recognize a fall. The same applies to the opposite case, in which a large rotation only requires a small acceleration variance in order to detect the ejection of the smartphone. If the corresponding conditions are not met, ie if insufficient rotation is detected or if the smartphone is not falling, the method can be run through again with step 320. Otherwise, it is determined in step 350 that the rotation or rotation of the smartphone is sufficiently large (e.g.
- step 360 a termination condition can be defined.
- the current acceleration signal recorded again is used to determine whether the smartphone has come to rest after being thrown out of the holder. If this is not the case, the method with step 320 can be run through again. This repeated run makes it possible to detect the severity of the collision or the accident by detecting a prolonged fall of the smartphone. Otherwise, case information is generated in the last step 370. This case information can be sent as a message to an emergency service.
- the case information can contain a classification so that different emergency measures are carried out depending on the severity of the accident. This can range from a simple message to an emergency call with the passage of known parameters about the accident.
- the method detects a crash by checking an electrical contact in the holder. If the method has such separate information, the method can specialize in the classification of the accident.
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- General Health & Medical Sciences (AREA)
- Gerontology & Geriatric Medicine (AREA)
- Emergency Management (AREA)
- Social Psychology (AREA)
- Psychology (AREA)
- Psychiatry (AREA)
- Telephone Function (AREA)
- Emergency Alarm Devices (AREA)
- Telephonic Communication Services (AREA)
- Alarm Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020201222.9A DE102020201222A1 (de) | 2020-01-31 | 2020-01-31 | Verfahren und Vorrichtung zur Erkennung des Falls eines mobilen Endgeräts |
PCT/EP2021/051028 WO2021151723A1 (de) | 2020-01-31 | 2021-01-19 | Verfahren und vorrichtung zur erkennung des falls eines mobilen endgeräts |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4097702A1 true EP4097702A1 (de) | 2022-12-07 |
Family
ID=74205841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21701277.2A Pending EP4097702A1 (de) | 2020-01-31 | 2021-01-19 | Verfahren und vorrichtung zur erkennung des falls eines mobilen endgeräts |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230086000A1 (de) |
EP (1) | EP4097702A1 (de) |
CN (1) | CN115053275A (de) |
DE (1) | DE102020201222A1 (de) |
TW (1) | TW202136780A (de) |
WO (1) | WO2021151723A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021213915A1 (de) | 2021-12-07 | 2023-06-07 | Psa Automobiles Sa | Fernsteuerung einer Fahrzeugfunktion mit Sensorfusion aus Touchscreen und IMU |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5307116B2 (ja) * | 2007-03-23 | 2013-10-02 | クゥアルコム・インコーポレイテッド | マルチセンサデータの収集/処理 |
JP6510368B2 (ja) * | 2015-08-26 | 2019-05-08 | 京セラ株式会社 | 携帯電子機器、制御方法、及び制御プログラム |
EP3173796B1 (de) * | 2015-11-27 | 2019-06-05 | Deutsche Telekom AG | Sensorsystem zur montage an einem fahrrad |
-
2020
- 2020-01-31 DE DE102020201222.9A patent/DE102020201222A1/de active Pending
-
2021
- 2021-01-19 WO PCT/EP2021/051028 patent/WO2021151723A1/de unknown
- 2021-01-19 CN CN202180011874.5A patent/CN115053275A/zh active Pending
- 2021-01-19 US US17/795,477 patent/US20230086000A1/en active Pending
- 2021-01-19 EP EP21701277.2A patent/EP4097702A1/de active Pending
- 2021-01-28 TW TW110103168A patent/TW202136780A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
DE102020201222A1 (de) | 2021-08-05 |
TW202136780A (zh) | 2021-10-01 |
CN115053275A (zh) | 2022-09-13 |
US20230086000A1 (en) | 2023-03-23 |
WO2021151723A1 (de) | 2021-08-05 |
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