Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
  • B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
  • B60W30/18—Propelling the vehicle
  • B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
  • B60W50/0098—Details of control systems ensuring comfort, safety or stability not otherwise provided for
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W60/00—Drive control systems specially adapted for autonomous road vehicles
  • B60W60/005—Handover processes
  • B60W60/0051—Handover processes from occupants to vehicle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
  • B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
  • B60W2040/0818—Inactivity or incapacity of driver
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
  • B60W2050/0001—Details of the control system
  • B60W2050/0019—Control system elements or transfer functions
  • B60W2050/0028—Mathematical models, e.g. for simulation
  • B60W2050/0029—Mathematical model of the driver
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
  • B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
  • B60W2420/403—Image sensing, e.g. optical camera
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2520/00—Input parameters relating to overall vehicle dynamics
  • B60W2520/10—Longitudinal speed
  • B60W2520/105—Longitudinal acceleration
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2520/00—Input parameters relating to overall vehicle dynamics
  • B60W2520/12—Lateral speed
  • B60W2520/125—Lateral acceleration
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2540/00—Input parameters relating to occupants
  • B60W2540/223—Posture, e.g. hand, foot, or seat position, turned or inclined
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2540/00—Input parameters relating to occupants
  • B60W2540/26—Incapacity

Definitions

• the invention relates to a method for determining whether a driver of a motor vehicle is fit to drive.
• the invention relates to a motor vehicle for carrying out such a method.
• the invention relates to a system comprising such a motor vehicle.
• a motor vehicle often has a control device that is designed to control a longitudinal and/or lateral guide of the motor vehicle.
• a control device for example, an at least partially automated and preferably fully automated driving mode can be provided in the motor vehicle.
• the wearable detection device is often referred to as a wearable and can be, for example, a smartwatch, a fitness bracelet and/or another type of detection device, for example in the form of a ring or a headband.
• the invention is based on the finding that in connection with at least partially automated driving of a motor vehicle, different degrees of automation are defined which differ from one another with regard to a minimum requirement for a user of the motor vehicle, in particular with regard to a driver of the motor vehicle. Fulfillment of the minimum requirement for an automated driving mode according to the degree of automation level 3 is particularly relevant.
• the driver of the motor vehicle does not have to constantly monitor the movement of the motor vehicle, since the motor vehicle can independently carry out functions using a control device of the motor vehicle.
• the control device can be used, for example, to trigger a turn signal, change lanes and/or keep in lane.
• automation level 3 the driver must be ready at any time, at least within a specified time interval, to take over the longitudinal and/or lateral guidance of the motor vehicle again. Therefore, while driving in driving mode according to automation level 3, the driver is subject to the minimum requirement that he is mentally present, that is to say, in other words, that he is fit to drive.
• the ability to drive within the meaning of the invention is a driver's ability to drive the motor vehicle at any time.
• the ability to drive is therefore a current, situation-dependent state of the driver.
• An unfitness to drive is given, for example, if the driver is asleep or unconscious, for example due to the consumption of medication and/or intoxicants.
• a fit driver is a mentally alert driver.
• the ability to drive thus corresponds to a readiness to drive or a willingness to take over at least part of the driving task with regard to longitudinal guidance and/or lateral guidance of the motor vehicle.
• driving ability is not a measurement in itself, which means it cannot be measured directly.
• indirect characteristics to determine the ability of the driver of the motor vehicle to drive.
• Such an indirect feature is, for example, a deliberate movement of, for example, a body part such as an arm and/or a head of the driver.
• conscious movements are detected, for example, by a wearable detection device, such as a smart watch or a fitness bracelet.
• a worn wearable is therefore in principle suitable for determining a driver's ability to drive. For this reason, according to the invention, data recorded by means of the portable recording device are used to assess the driver's ability to drive.
• One aspect of the invention relates to a method for determining whether the driver of the motor vehicle is able to drive.
• the method according to the invention is therefore a driver's ability to drive determination method.
• the method comprises the following steps: In a method step, in particular, body movement data recorded by means of a portable recording device is received.
• the body movement data describe or signal a Body movement of a driver of the motor vehicle wearing the portable sensing device.
• the body movement data is correlated with a body movement of a driver of the motor vehicle wearing the wearable detection device on a body part of a body of the driver.
• the portable detection device is arranged on the driver's body, in particular on a body part of the driver's body, and is in particular fixed in a non-destructively detachable manner.
• the body movement of a specific part of the body of the driver of the motor vehicle is detected by means of the portable detection device, namely the part of the body on which the portable detection device is arranged.
• the portable detection device is, for example, a so-called smartwatch, i.e. a watch that is designed to detect at least one movement of the arm on which the watch is worn, there is at least information about the arm movement as a body movement of the driver of the vehicle motor vehicle.
• the portable detection device typically has a
• Communication interface is designed to transmit body movement data detected by the detection device via a preferably wireless communication link.
• the transmitted body movement data are then received by the motor vehicle.
• they are made available to a control device of the motor vehicle, for example for further evaluation.
• the body movement data are preferably continuously recorded by means of the portable recording device and received by the motor vehicle.
• vehicle movement data that describe a vehicle movement of the motor vehicle is recorded.
• the vehicle movement data are recorded by means of a movement detection device of the motor vehicle.
• the movement detection device is, for example, an acceleration sensor of the motor vehicle.
• the vehicle movement data can, for example, speed data that describe a driving speed of the motor vehicle, acceleration data that a acceleration of the motor vehicle, steering angle data that describe a steering angle of a lateral guidance of the motor vehicle, and/or position data provided with time information that describe an absolute position of the motor vehicle or a position relative to a predetermined position, with the motor vehicle possibly including suitable motion detection devices for this purpose become.
• the vehicle movement data describing the preferably current movement of the motor vehicle are thus provided by the motor vehicle itself.
• a body movement signal is generated.
• the body movement signal is, for example, data and/or information that describes or describes the driver's body movement in relation to the vehicle movement.
• the generation is performed by applying a body motion detection criterion to the received body motion data and the detected vehicle motion data.
• the body movement signal is generated, for example, by means of the control device of the motor vehicle, in which the body movement detection criterion is preferably stored, that is to say is stored.
• the body movement detection signal describes whether the detected body movement of the driver is dependent on the vehicle movement of the motor vehicle or is independent of the body movement.
• the body movement detection criterion includes, for example, a rule and/or an algorithm which can be used to evaluate whether the body movement detected by the portable detection device is caused solely by the vehicle movement of the motor vehicle, i.e. whether it is dependent on it or not can be caused by this alone and is therefore independent of this.
• independent body movement for example, there is a movement of his body caused and carried out by the driver himself, for example raising or lowering his arm, on which he holds the carries portable detection device, so that the body movement carried out by him is independent of the vehicle movement of the motor vehicle.
• the body movement is to be evaluated as an independent body movement if it is not solely caused by the movement of the motor vehicle, but is at least partly due to the driver's own movement of the motor vehicle.
• the driver can in particular move at least one specific part of his body.
• the moving body part is the arm with the portable sensing device attached thereto. the in
• the regulations and/or algorithms stored as body movement recognition criteria are therefore designed to be able to identify the dependent or independent body movement as such.
• a further method step it is checked in particular whether the independent body movement is present according to the generated body movement signal.
• the generated body movement signal if the independent body movement is present, the driver's ability to drive is determined. If at least one body movement of the driver of the motor vehicle that is independent of the vehicle movement is detected, it is concluded that the driver is currently conscious, ie is currently able to drive. Since the determination is possible solely on the basis of the recorded body movement data and vehicle movement data, a separate request to the driver can be dispensed with, for example, with the driver's reaction to the request being used to infer his ability to drive. Active body movements carried out by the driver, whether natural or artificial, consciously or unconsciously, can be evaluated as a reliable indicator of fitness to drive.
• the current state of the driver of the motor vehicle can thus be reliably determined by means of the method according to the invention, since his driving ability or unfitness to drive can be determined.
• the invention also includes exemplary embodiments that result in additional advantages.
• the body movement signal is generated at least for a predetermined time interval.
• the predetermined time interval is, for example, 10 seconds, 20 seconds, 30 seconds, 40 seconds, 50 seconds, 1 minute, 2 minutes, 3 minutes, or 5 minutes.
• the time interval can include any time interval between 1 second and 10 minutes, 5 seconds and 5 minutes, 10 seconds and 3 minutes, or 30 seconds and 1 minute.
• the time interval can have any value within the stated intervals.
• the body movement detection criterion is applied to the body movement data detected by the portable detection device and received from the motor vehicle during the time interval and to the vehicle movement data detected in the time interval.
• the body movement signal is thus generated, for example, for predetermined time blocks, that is to say always for exactly the time of the predetermined time interval.
• the fitness to drive of the driver is then preferably determined for each individual time interval. Using the predetermined time interval ensures that not, for example, due to significantly longer ago Time took place body movements of the driver, which have taken place, for example, more than 10 minutes before a current time, the current driving ability of the driver is closed. Instead, the predefined time interval checks a clearly defined and preferably small time window before the current time with regard to the body movement that is independent of the vehicle movement, so that the current ability to drive of the motor vehicle driver can actually be inferred.
• the body movement signal is preferably generated continuously for each predetermined time interval, so that, for example, there are several body movement signals for an entire period of the journey, each of which describes the body movement recognized by the control device for the predetermined time interval. This achieves a particularly reliable determination of the driver's ability to drive, which can also be reliably understood as valid for the current point in time.
• a prerequisite is a temporal synchronization between a clock in the motor vehicle, which forms the basis for the recorded vehicle movement data, and a clock in the portable detection device, which forms the basis for the recorded body movement data.
• This synchronization can take place, for example, when the portable detection device and the motor vehicle are connected electronically, that is to say, for example, when the communication link is set up.
• the control device thus has temporally correlated body movement data and vehicle movement data.
• a check is made as to whether at least one blink of an eye of the driver is detected in the predetermined time interval by means of an interior camera in an interior of the motor vehicle.
• camera data is recorded by means of an interior camera in the interior of the motor vehicle, on the basis of which, for example, using a Blinking recognition criterion on the camera data, a blinking information can be determined.
• the blink information includes the information as to whether at least one blink of the driver's eye was detected in the time interval or not.
• the blinking detection criterion has a corresponding regulation and/or a corresponding algorithm for this.
• the blinking recognition criterion is preferably based on methods of digital image processing.
• the camera data are preferably moving image data of at least one head of the driver, preferably an eye region of the driver's head.
• the driver's ability to drive determined. In addition to the fact that a body movement independent of the vehicle movement of the vehicle was recorded based on the body movement data and the vehicle movement data, it is also assumed that the driver of the motor vehicle blinked at least once in the time interval in order to ultimately determine the driver's ability to drive. This avoids the driver's ability to drive being inferred, for example, due to physical movements caused by the driver's state of health and the driver's mental absence at the same time.
• the blink of the driver's eyelids is also monitored, so that, for example, if he keeps his eyes closed or, for example, has opened his eyes without blinking in the time interval, this is recorded and evaluated as indicators that conflict with the driver's ability to drive.
• two features for determining the driver's ability to drive can be checked at intervals, namely body movement, such as arm movement, but also the blinking of the driver's eye, i.e. whether he is blinking or not. This leads to a particularly high reliability of the method according to the invention.
• one exemplary embodiment provides that, if the driver's ability to drive has been determined, at least an automated driving mode of the motor vehicle is activated.
• the automated driving mode is preferably the driving mode according to the degree of automation level 3.
• the at least automated driving mode of the motor vehicle can be maintained. It can therefore be prevented that a handover to the driver is forced even though he is able to drive.
• a change to at least the automated driving mode can take place. For example, if the motor vehicle is in a low-automated driving mode with a degree of automation less than level 3, the more highly automated driving mode, such as the driving mode with a degree of automation level 3, can first be activated.
• the motor vehicle With a degree of automation below level 3, the motor vehicle is, for example, driven completely by the driver himself (level 0), driven with assistance (level 1) or controlled at least partially automatically by the control device of the motor vehicle (level 2).
• an automated driving mode can be activated due to driving on an expressway, for example the driving mode according to the degree of automation level 3, it is possible to switch autonomously to this higher automated driving mode, for example, provided that the driving ability has been determined as described.
• the motor vehicle can already be driving in driving mode according to automation level 3, so that the driver's ability to drive only has to be given to maintain driving in driving mode according to automation level 3.
• a degree of automation with a level greater than 3 to level 3 can be provided with the requirement for the driver's ability to drive. That means, for example, the corresponding change from the highly automated driving mode according to the degree of automation Level 4, in which the longitudinal and lateral guidance of the motor vehicle is permanently taken over by the control device and the driver can only take over the driving of the motor vehicle again on request, and/or the degree of automation level 5, that is, a fully automated driving mode in which the motor vehicle drives fully autonomously, be provided. Used by such a highly automated driving mode switched back to the driving mode according to the degree of automation level 3, the driving ability of the driver must currently be given. In the scenarios mentioned, it makes sense in principle to check the driver's ability to drive, as is possible, for example, with the method described. This ultimately supports automated driving of the motor vehicle in a particularly useful and reliable manner.
• the body movement data received and/or the vehicle movement data recorded describe an acceleration.
• the acceleration of the driver's body i.e. a body acceleration of the driver
• the acceleration of the motor vehicle i.e. a vehicle acceleration
• the portable detection device and the movement detection device of the motor vehicle preferably have an acceleration sensor.
• the movement detection device is the acceleration sensor.
• This exemplary embodiment is based on the knowledge that, for example, a movement in the transverse direction of the motor vehicle, for example due to cornering, does not have to be taken into account for the determination of the body movement signal. Rather, it is sufficient to merely record and evaluate the acceleration data. For the sake of simplicity, it is therefore not necessary to acquire data other than the body movement data and/or vehicle movement data describing the acceleration. In this way, the driving ability of the driver is determined in a manner that is particularly economical in terms of data transmission and data acquisition.
• the received body movement data has a greater actual Describe body acceleration of a body of the motor vehicle as a target body acceleration that is expected based on the vehicle acceleration of the motor vehicle according to the detected vehicle movement data. It is therefore first determined which body acceleration the driver's body actually experiences. This is quantified using the actual body acceleration. Actual body acceleration data describing the actual body acceleration are thus available. It is also calculated based on the vehicle acceleration how the driver's body should be accelerated purely due to the vehicle acceleration. This is quantified using the target body acceleration. Target body acceleration data describing the target body acceleration are thus determined. In other words, the target body acceleration is the expected body acceleration of the body, that is, a predicted value of the body acceleration based only on the detected vehicle acceleration.
• the generated body motion signal describes the independent body motion.
• the independent body movement is present when the actual body acceleration value is greater than the target body acceleration value.
• the driver's body is accelerated to a greater extent than would be expected on the basis of the actual vehicle acceleration, that is to say the setpoint body acceleration, the independent body movement is consequently assumed.
• the body movement signal can ultimately be provided in a simple manner.
• an exemplary embodiment provides that the body movement detection criterion takes mechanical damping of the motor vehicle into account.
• the mechanical damping occurs, for example, due to a damping device of the motor vehicle, so that a different acceleration is perceived in an interior of the motor vehicle than the vehicle acceleration according to the vehicle movement data.
• the corresponding Damping factor taken into account by the body movement detection criterion by being provided as a predetermined value and/or a variable value.
• a delay time can be taken into account.
• the delay time is a time between a detection time point of the vehicle movement data and an actual time point of the vehicle movement and/or the body movement. It is therefore taken into account if there is a time difference between the detection of the vehicle acceleration, for example, and the effect of this vehicle acceleration on the vehicle interior.
• any discrepancy that may exist between the detection of the vehicle acceleration and the effect of the detected vehicle acceleration on the body acceleration of the driver can exist and be taken into account.
• a type of dead time caused for example by the damping of the motor vehicle and/or the driver's body, is taken into account.
• inertia effects are taken into account.
• the delay time can be in the range of milliseconds, for example.
• the delay time is taken into account by the body movement detection criterion in that it is made available to it as a predetermined value and/or a variable value.
• the body motion detection criterion takes into account the mechanical damping and/or the delay time using a mechanical model. For example, a predetermined delay is specified in the model. Alternatively or additionally, the model for calculating the mechanical damping and/or the delay time can have parameters required, such as state variables for the motor vehicle and/or the driver. Ultimately, the body movement signal can be determined particularly reliably since various physical effects can be taken into account.
• a further exemplary embodiment provides that, if the generated body movement signal describes the dependent body movement, a Operation request for the driver is provided.
• a check is also made as to whether an actuation of an actuation device in the motor vehicle that was requested according to the actuation request has taken place.
• the activation request is, for example, an electronic notice and/or an electronic message. This can be output acoustically using a loudspeaker device in the motor vehicle and/or optically using a screen device in the motor vehicle.
• the actuation request can contain, for example, the request to operate a specific button, switch and/or rotary/push switch in the motor vehicle. This is then the actuating device in the motor vehicle.
• an actuating element can be displayed on a touch-sensitive screen in the motor vehicle, when it is touched the actuating device is actuated.
• the ability of the driver to drive is nevertheless determined. Even if it is not actually possible to infer from the driver's body movement that he is fit to drive, he can nevertheless indicate that he is quite fit to drive after reacting to the actuation request. This makes sense, for example, when the driver is sitting quietly in the motor vehicle and has not moved his body, in particular his arm with the portable detection device arranged there, for example at least for the predetermined time interval. This does not necessarily mean that the driver is not fit to drive, but can be an event that occurs at random.
• the driver can nevertheless show that he is quite awake, for example, and is therefore ready to take over the longitudinal and/or lateral guidance of the motor vehicle by actively carrying out the requested actuation of the actuating device. In this way, additional security is achieved in that the driver's ability to drive is always correctly evaluated.
• the Activation request also include raising and / or lowering the body part on which the portable detection device is arranged.
• the driver could then show, for example by raising his arm, that he is absolutely fit to drive, so that the driver's ability to drive can also be determined without actuating the actuating device or even providing the actuating device.
• a communication connection is established between the portable detection device and the motor vehicle and the detected body movement data is transmitted to the motor vehicle via the established communication connection.
• the communication link is preferably designed to be wireless.
• the communication connection can, for example, via a wireless local area network (WLAN for Wireless Local Area Network), a Bluetooth connection and/or a mobile data network, for example based on the Longtherm Evolution (LTE), Longtherm Evolution Advanced (LTE-A) or Fifth mobile communications standard Generation (5G) to be provided.
• LTE Longtherm Evolution
• LTE-A Longtherm Evolution Advanced
• 5G Fifth mobile communications standard Generation
• the portable detection device and the motor vehicle preferably have a respective communication interface, so that the communication connection is established between the two communication interfaces.
• the communication connection is preferably set up directly after the motor vehicle is switched on. As an alternative or in addition to this, it can be set up after activating the automated driving mode, preferably the automated driving mode according to the level 3 automation level.
• the communication connection can be set up between the portable detection device and a mobile terminal device of the driver, with a communication connection also being set up between the mobile terminal device of the driver and the communication interface of the motor vehicle.
• the data that is to say the recorded body movement data, can then first be sent from the portable recording device to the mobile terminal device are transmitted and made available by this to the motor vehicle.
• the mobile end device is a mobile phone, for example, preferably a smartphone.
• the body movement data that is transmitted is preferably made available to the control device, since this then generates the body movement signal and, if necessary, determines the driver's ability to drive.
• the portable detection device arranged in the motor vehicle for example, and preferably connected or at least connectable to the motor vehicle via the communication link, is actually assigned to the driver of the motor vehicle.
• a passenger or another occupant of the motor vehicle may be wearing the portable detection device, so that the detected body movement data are not at all suitable for determining the ability of the driver of the motor vehicle to drive.
• a personalization application can be provided in the portable detection device and/or in the terminal device assigned to the driver and arranged in the motor vehicle.
• Driver authentication can also be carried out, for example based on a personalized vehicle key and/or based on image data of the driver captured by the interior camera in the interior of the motor vehicle, from which the identity of the driver can be inferred.
• an identity query can be provided using the actuating device and an associated screen in the motor vehicle, for example, which the driver uses to indicate or confirm that the portable detection device detected in the motor vehicle is worn by him or her.
• a further aspect of the invention relates to a motor vehicle with a control device.
• the motor vehicle is designed to the described to carry out procedures.
• the motor vehicle is designed to carry out the method steps of the method according to the invention provided for the motor vehicle.
• the motor vehicle is also designed to carry out method steps that can be carried out by the motor vehicle according to one of the exemplary embodiments described and/or a combination of the exemplary embodiments described.
• the motor vehicle according to the invention is preferably designed as a motor vehicle, in particular as a passenger car or truck, or as a passenger bus or motorcycle.
• the invention also includes the control device for the motor vehicle.
• the control device can be a data processing device or a
• Have processor device which is set up to the method according to the invention, an embodiment of the method according to the invention or a combination of
• the processor device can have at least one microprocessor and/or at least one microcontroller and/or at least one FPGA
• the processor device can have program code which is set up to carry out the method according to the invention, the exemplary embodiment of the method according to the invention or the combination of exemplary embodiments of the method according to the invention when executed by the processor device.
• the program code can be stored in a data memory of the processor device.
• the invention also includes the combinations of features of the described embodiments.
• the invention also includes implementations that each have a combination of the features of several of the exemplary embodiments described, provided that the exemplary embodiments have not been described as mutually exclusive.
• a further aspect of the invention relates to a system for determining whether a driver of the motor vehicle is able to drive.
• the system includes the motor vehicle and the portable detection device that is worn on the body by a driver of the motor vehicle.
• the system is designed to carry out the method according to the invention, an exemplary embodiment of the method according to the invention and/or a combination of exemplary embodiments of the method according to the invention.
• FIG. 1 shows a schematic representation of a motor vehicle with a driver who wears a portable detection device on his body
• FIG. 2 shows a schematic representation of a signal flow graph for a method for determining whether a driver of a motor vehicle is fit to drive.
• a motor vehicle 1 is outlined.
• the driver 2 wears a portable detection device 4 on his body, which is what is known as a smart watch, ie what is known as a wearable.
• the driver 2 wears the portable detection device 4 on a body part 5 of his body, the body part 5 being an arm of the driver 2 in this example.
• the motor vehicle 1 has a control device 6 .
• the control device 6 is designed to intervene in a longitudinal and/or transverse guidance of the motor vehicle 1, ie to control it.
• the control device 6 has at least one driving mode 7 .
• an automated driving mode 7 is preferably provided as driving mode 7, which corresponds to a degree of automation level 3, i.e. the control device 6 independently carries out numerous driving functions of the motor vehicle 1, i.e. in particular controls the longitudinal and lateral guidance of the motor vehicle 1.
• driver 2 must be able to permanently take control of motor vehicle 1, which means that he is expected to be able to drive 22 (see reference number 22 in FIG. 2) at all times.
• the motor vehicle 1 according to FIG. 1 also has a communication interface 8 .
• the communication interface 8 can set up and maintain a communication connection 9 to the portable detection device 4 . Via the communication link 9, data can be transmitted from the portable detection device 4 to the
• Communication interface 8 of the motor vehicle 1 are transmitted.
• the data transmitted and thus received by the motor vehicle 1 can be made available to the control device 6 .
• the motor vehicle 1 also has a movement detection device 10 .
• the movement detection device 10 is embodied here as an acceleration sensor of the motor vehicle 1 so that data describing an acceleration of the motor vehicle 1 can be detected by means of the movement detection device 10 .
• the motor vehicle 1 also has an interior camera 11 which can capture an interior 12 of the motor vehicle 1 .
• motor vehicle 1 has an actuating device 24, which can be embodied, for example, as a touch-sensitive screen, button, switch and/or rotary pushbutton switch.
• the actuating device 24 can be actuated manually by the driver 2 .
• the motor vehicle 1 and the portable detection device 4 can be included in a system.
• the communication connection 9 is preferably wireless, for example via a wireless local area network (WLAN for Wireless Local Area Network), a Bluetooth connection and/or a mobile data network, for example based on the Longtherm Evolution (LTE), Longtherm Evolution Advanced (LTE -A) or Fifth Generation (5G).
• WLAN Wireless Local Area Network
• LTE Longtherm Evolution
• LTE -A Longtherm Evolution Advanced
• 5G Fifth Generation
• a method for determining the driving ability 22 of the driver 2 of the motor vehicle 1 is outlined.
• the motor vehicle 1 is switched on here, for example.
• a start button in the motor vehicle 1 can be actuated by the driver 2 and/or a vehicle key can be inserted into an ignition lock of the motor vehicle 1 and the motor vehicle 1 can be switched on by turning the ignition lock.
• a method step S2 for example, the communication link 9 between the portable detection device 4 and the motor vehicle 1, i.e. the communication interface 8 of the Motor vehicle 1 built.
• a method step S3 for example, body movement data 13 detected by the portable detection device 4 is received by the communication interface 8 of the motor vehicle 1. These data are therefore transmitted from the portable detection device 4 to the motor vehicle 1 via the established communication connection 9.
• the body movement data 13 describes a body movement of the driver
• the received body movement data 13 preferably describes the acceleration of the arm, ie the body part 5 of the driver 2 of the motor vehicle 1 .
• vehicle movement data 14 is recorded, for example, by means of the movement detection device 10 of the motor vehicle 1.
• the vehicle movement data 14 describe a vehicle movement of the motor vehicle 1. Here they describe the acceleration of the motor vehicle 1.
• a body movement detection criterion 15 is then applied to the received body movement data 13 and the detected vehicle movement data 14 in a method step S5, for example.
• a body movement signal 16 is generated.
• Body movement signal 16 describes whether the detected body movement of driver 2 is a body movement that is dependent on or independent of the vehicle movement of motor vehicle 1 .
• the body movement signal 16 is preferably generated at least for a predefined time interval 21 .
• the body movement detection criterion 15 is preferably applied to the body movement data 13 recorded in the time interval 21 by the portable recording device 4 and received from the motor vehicle 1 and to the vehicle movement data 14 recorded in the time interval 21 .
• the body movement detection criterion 15 it can be checked whether the received body movement data 13 describes a greater actual body acceleration 17 of the driver 2, in particular of the body part 5 of the driver 2, than a setpoint body acceleration 18 provides.
• the target body acceleration 18 is expected based on the vehicle acceleration according to the vehicle movement data 14 of the motor vehicle 1 . If it is determined, for example, that the actual body acceleration 17 is greater than the setpoint body acceleration 18, the body movement signal 16 is generated in such a way that it describes the independent body movement.
• the actual body acceleration 17 and the target body acceleration 18 are here calculated as actual body acceleration data and target body acceleration data and compared with one another.
• the body movement detection criterion 15 can also or alternatively take into account a mechanical damping 19 of the motor vehicle 1 by means of a mechanical model. Alternatively or additionally, the body movement recognition criterion 15 can use the mechanical model to take into account a delay time 20 between a time when the vehicle movement data 14 was recorded and an actual time of the vehicle movement and/or the body movement.
• a method step S6 it is checked, for example, whether the independent body movement is present according to the generated body movement signal 16. If this is the case, the fitness to drive 22 of the driver 2 is determined in a method step S7.
• an actuation request 23 for the driver 2 can be provided in a method step S8, for example. It is then checked, for example in a method step S9, whether an actuation of the actuation device 24 in the motor vehicle 1, which was requested according to the actuation request 23, has taken place.
• the actuation prompt 23 is, for example, an indication and/or a Message that is issued acoustically and/or optically in the motor vehicle 1 for the driver 2.
• the actuation request 23 can request him, for example, to press a specific key or a specific button in the motor vehicle 1, with the actuation request 23 being deemed to have been fulfilled by the corresponding actuation.
• the actuating device 24 can be a microphone device of the motor vehicle 1 so that, for example, an acoustic confirmation of the ability to drive 22 of the driver 2 can be possible by means of a verbal response to the actuating request 23 . If the requested actuation has taken place, the ability to drive 22 of the driver 2 is nevertheless determined, that is to say progressed to method step S7, for example.
• a method step S11 it can be checked whether at least one blink of the eye of the driver 2 is detected in the predetermined time interval 21 .
• the camera data 25 are evaluated accordingly. Only if the at least one blink of the eye is detected in the time interval 21 is the driving ability 22 of the driver 2 ascertained, ie progress is made to method step S7.
• the determination of detected body movement data 13 from the portable detection device 4 to the motor vehicle 1 can be provided again, for example, so that the body movement of the driver 2 of the motor vehicle 1 is still checked, for example.
• progress can be made to an end 26, that is to say the method can be ended, since the unobserved blinking of the eye of the driver 2 indicates his unfitness to drive.
• the method can also be ended 26 if the actuation of the actuation device 24 in the motor vehicle 1 has not taken place in accordance with the actuation request 23 .
• the actuation request 23 can include a request to move the body part 5, so that, for example, a corresponding body movement of the driver 2 can also be used to infer that the driver 2 is fit to drive.
• the automated driving mode 7 of the motor vehicle 1 is activated and/or maintained and/or a changeover to at least the automated driving mode 7 takes place. Since the driving ability 22 of the driver 2 was successfully determined, continued driving with the driving mode 7 according to the degree of automation level 3 is still permissible and possible, for example.
• the invention shows a comparison of a wearable motion sensor with a vehicle sensor system for detecting the movement of the driver 2.
• the body movement data 13 recorded by means of the portable recording device 4 are compared with the vehicle movement data 14 recorded by the movement recording device 10 of the motor vehicle 1. If the driver 2 wears the portable detection device 4 with a movement sensor and radio technology, the data from the portable detection device 4, i.e. the body movement data 13, can be compared with the vehicle movement data 14 and thus the corresponding vehicle data of the motor vehicle 1 and to determine conscious movements of the driver 2 be used. More conscious body movements of the driver 2 can thus be perceived by the system, so that the driver 2 may not be prompted to take over.
• the portable detection device 4 and the motor vehicle 1 are bonded accordingly, ie connected to one another via the communication connection 9 .
• both must have an agreement on a common time base. This is possible, for example, by applying the body movement detection criterion 15 since this example, the delay time 20 but also the mechanical damping 19 can take into account.
• a common time base is calculated for the detected and received body movement data 13 and the detected vehicle movement data 14, so that the body movement data 13 and the vehicle movement data 14 are available to the control device 6 in a time-correlated manner, for example .
• the method steps S1 to S12 described are preferably at least initiated and preferably carried out by the control device 6 of the motor vehicle 1 .
• Exchanged or provided movement data can then be compared with one another, preferably in the control device 6 of the motor vehicle 1 , i.e. the body movement data 13 can be evaluated with the vehicle movement data 14 using the body movement recognition criterion 15 by means of the control device 6 . If it can be ruled out that the vehicle movement triggered the respective movement of the portable detection device 4, i.e. ultimately the body movement of the driver 2, the deliberate driver movement, i.e. the deliberate movement of a body part 5 of the driver 2, is accepted and registered and because of it Driver takeover readiness ensured, so ultimately the driving ability 22 of the driver 2 is assumed to exist.
• the body movement detection criterion 15 takes into account a timing, ie the time synchronization between the portable detection device 4 and the movement detection device 10 of the motor vehicle 1, as well as a direction of movement.
• the determinations of the ability to drive 22 of the driver 2 are preferably based solely on acceleration data.

Landscapes

• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Human Computer Interaction (AREA)
• Physics & Mathematics (AREA)
• Mathematical Physics (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
• Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=83113055

Family Applications (1)

Country Status (3)

Citations (7)

Family Cites Families (5)

• 2021
  • 2021-08-20 DE DE102021121660.5A patent/DE102021121660A1/de active Pending
• 2022
  • 2022-08-04 WO PCT/EP2022/071911 patent/WO2023020848A1/de active Application Filing
  • 2022-08-04 CN CN202280056667.6A patent/CN117836188A/zh active Pending

Patent Citations (7)

Also Published As

Similar Documents

Legal Events