Apparatus for Ascertaining the Surroundings for a Vehicle, Vehicle and Method for Initiating a Protective Function in the Case of an Impact Effect that is Acting upon a Vehicle
20200023799 ยท 2020-01-23
Inventors
Cpc classification
B60R21/0134
PERFORMING OPERATIONS; TRANSPORTING
B60R21/34
PERFORMING OPERATIONS; TRANSPORTING
B60R19/40
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
An apparatus for ascertaining the surroundings for a vehicle includes a housing configured to receive a device for ascertaining the surroundings of the vehicle and a movement device. The movement device is connected to the housing and is coupled to a structural element of the vehicle. The movement device is configured to move the housing relative to the structural element in response to a triggering signal in order to initiate a protective function in a case of an impact effect that is acting upon the vehicle.
Claims
1. An apparatus for ascertaining surroundings for a vehicle, comprising: a housing; and a movement device connected to the housing and coupled to a structural element of the vehicle, the movement device configured to move the housing relative to the structural element in response to a triggering signal in order to initiate a protective function in a case of an impact effect that is acting upon the vehicle.
2. The apparatus according to claim 1, further comprising: a device configured to ascertain the surroundings, the device including a light source or a sensor device configured to ascertain the surroundings, wherein the housing is configured to receive the device.
3. The apparatus according to claim 1, wherein the movement device includes at least one holding element arranged between the housing and the structural element, the at least one holding element configured fix the housing to the structural element and to release the housing in response to the triggering signal.
4. The apparatus according to claim 1, wherein: the movement device includes at least one housing-side pushing element and at least one structure-side pushing element, and the pushing elements are displaced against one another in response to the triggering signal in order to move the housing relative to the structural element.
5. The apparatus according to claim 1, wherein: the movement device includes a resilient device having resilient actuator and at least one resilient element configured to store potential energy, the at least one resilient element is arranged between the housing and the structural element, and the resilient actuator is configured to convert potential energy of the at least one resilient element into kinetic energy in response to the triggering signal in order to move the housing relative to the structural element.
6. The apparatus according to claim 1, wherein: the movement device includes at least one housing-side magnet, a structure-side magnet, and a fixing actuator, the fixing actuator is configured to interrupt a fixing arrangement between the at least one housing-side magnet and the structure-side magnet in response to the triggering signal in order to move the housing relative to the structural element using a magnetic force acting between the at least one housing-side magnet and the structure-side magnet.
7. The apparatus according to claim 1, wherein: the movement device includes at least one housing-side magnetic element, a structure-side magnetic element, and an electromagnet configured to output a magnetic field, the electromagnet is configured to initiate a change of the magnetic field in response to the triggering signal in order to move the housing relative to the structural element using a magnetic force acting between the at least one housing-side magnetic element and the structure-side magnetic element.
8. The apparatus according to claim 1, wherein the triggering signal includes a force acting upon the housing in the case of the impact effect that is acting upon the vehicle.
9. The apparatus according to claim 2, wherein the triggering signal includes a control signal received via an interface to a further sensor device or the device configured to ascertain the surroundings.
10. The apparatus according to claim 2, further comprising: a further sensor device configured to identify an impact effect that will act upon the vehicle at a future time.
11. A vehicle comprising: a structural element; and an apparatus configured to ascertain surroundings of the vehicle, the apparatus including a housing and a movement device connected to the housing and coupled to the structural element of the vehicle, wherein the movement device is configured to move the housing relative to the structural element in response to a triggering signal in order to initiate a protective function in a case of an impact effect that is acting upon the vehicle.
12. A method for initiating a protective function in a case of an impact effect that is acting upon a vehicle, the vehicle including a structural element, the method comprising: moving a housing of an apparatus relative to the structural element with a movement device of the apparatus in response to a triggering signal in order to initiate a protective function in the case of the impact effect that is acting upon the vehicle, wherein the housing is configured to receive a device configured to ascertain the surroundings of the vehicle.
13. The method according to claim 12, further comprising: identifying the impact effect that is acting upon the vehicle; and generating the triggering signal in response to identifying the impact effect.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Exemplary embodiments of the approach that is proposed here are illustrated in the drawings and are further explained in the following description. In the drawings:
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
[0028]
[0029]
[0030]
DETAILED DESCRIPTION
[0031] In the following description of advantageous exemplary embodiments of the present disclosure, identical or similar reference numerals are used for the elements that are illustrated in the various figures and act in a similar manner, wherein a repeated description of these elements is omitted.
[0032]
[0033] In accordance with the exemplary embodiment illustrated here, the device 120 for ascertaining the surroundings is received in the housing. The device 120 for ascertaining the surroundings comprises in particular a light source such as a headlight or a sensor device having by way of example a LiDAR sensor for ascertaining the surroundings.
[0034] The triggering signal 130 in accordance with one exemplary embodiment represents a force that is acting upon the housing 115 in the case of an impact effect 135 that is acting upon the vehicle 100. Alternatively, the triggering signal 130 represents a control signal that is received via an interface to a sensor device 140 or the device 120 for ascertaining the surroundings. The sensor device 140 is embodied as a component of the vehicle 100 and in addition or alternatively as a part of the apparatus 105. In accordance with different exemplary embodiments, the sensor device 140 is embodied so as to identify an impact effect 135 that has already occurred or that will act upon the vehicle 100 in the future.
[0035] It is possible using one exemplary embodiment of the apparatus 105 that is illustrated here with the aid of automated reaction chains to protect unprotected road users that collide with the vehicle 100 and also to minimize damage to the Ego vehicle or to the other vehicle involved in the accident. It is possible by means of the apparatus 105 in the event of a collision to initiate one or multiple reaction chains in an automated manner in order to suitably bring the housing 115 into movement. It is possible by means of the movement to initiate a protection against injuries by means of the housing 115 or to minimize damage to the housing 115 or the device 120 for ascertaining the surroundings that is received in the housing 115. The step of triggering the reaction chain is performed in accordance with one exemplary embodiment by means of the triggering signal 130, optionally based on an external signal, which is provided by an external sensor device or the sensor device 140 by way of example in the form of standard acceleration sensors in order to trigger an airbag. In addition or alternatively, the triggering signal 130 is also provided with the aid of an inertia sensor system that is installed internally in the housing 115 in the form of the received device 120 for ascertaining the surroundings in order to minimize the triggering latency.
[0036] Moreover, the triggering procedure of the reaction chain that is initiated by means of the triggering signal 130 is performed optionally or alternatively based upon ascertaining the future impact effect. In this case, the ascertaining step is performed in accordance with one exemplary embodiment using the device 120 for ascertaining the surroundings that is received in the housing 115 in order to be protected. This is expedient by way of example in the case of an object that is rapidly approaching the vehicle 100 or alternatively or optionally at a high Ego speed of the vehicle 100. In this manner, a future impact effect 135 is optionally identified, which represents a time advantage since the movement of the housing 115 relative to the structural element 110 is already possible prior to a collision of the vehicle.
[0037]
[0038] It is possible with the increasing automation of current and future generations of motor vehicles to achieve a direct dependency of sensors for ascertaining the surroundings such as camera systems, radars, LiDAR, ultrasonic sensor systems or similar. These sensors for ascertaining the surroundings are integrated by way of example into the apparatus 105 illustrated here, by way of example by means of an inside-out configuration. In this case, owing to an improved ascertaining situation the sensors may be integrated into the vehicle 100 into the outer edges of the vehicle 100 so that said sensors protrude from said outer edges, as is illustrated in
[0039] In order to avoid repair costs in the event of damage as a result of an impact effect that is acting upon the vehicle 100, the device for ascertaining the surroundings illustrated here is arranged in the housing of one exemplary embodiment that is described of the apparatus 105 for ascertaining the surroundings. If a collision with an unprotected road user such as a pedestrian or a two-wheeled means of transportation such as a bicycle occurs, the sensors of the device for ascertaining the surroundings of the apparatus 105 on the vehicle outer edges advantageously do not represent an increased risk by means of the movement of the device for ascertaining the surroundings relative to the structural element.
[0040] A use of the apparatus 105 for ascertaining the surroundings so as to initiate a protective function in relation to reducing resulting damage to the vehicle 100 and in relation to pedestrian protective measures is also advantageous in relation to development in the field of mobility solutions such as shuttles or robotic taxis and integration of optional multiple sensors for ascertaining the surroundings per vehicle 100.
[0041]
[0042] The movement device 125 of the apparatus 105 that is illustrated here comprises, in accordance with one exemplary embodiment, at least one holding element 305 that may be arranged between the housing and the structural element. In accordance with various exemplary embodiments, the movement device 125 in this case may comprise a single holding element 305 or a plurality of holding elements 305. The at least one holding element 305 is embodied for the purpose of fixing the housing 115 to the structural element and to release said housing in response to the triggering signal 130.
[0043] The movement device 125 is embodied in order to hold the housing 115 in a normal operation of the vehicle via the holding elements 305 in an operating position that is suitable for the operation of the device for ascertaining the surroundings that is encompassed by the housing 115. Moreover, the movement device 125 is embodied in order to render it possible to move the housing 115 from the operating position into a protective position if such a position displacement is perceived as expedient owing to an impact effect that is acting upon the vehicle in order to protect the device for ascertaining the surroundings or in order to protect people. In accordance with this exemplary embodiment, at least one part of the force F in the case of such an impact effect that is acting upon the vehicle is guided as the triggering signal 130 to the housing 115. The triggering signal 130 in this case acts in an exemplary manner on one side of the housing 115 that is arranged opposite the movement device 125.
[0044] The movement device 125 comprises here in an exemplary manner three rod-shaped holding elements 305. In the assembled state, the free ends of the holding elements 305 that are illustrated in
[0045] In accordance with this exemplary embodiment, the force F that acts by means of the triggering signal 130 upon the housing 115 and via the housing 115 upon the holding elements 305 initiates the procedure for deforming, here by way of example breaking, the holding element 305. Moreover, the force F that acts by means of the triggering signal 130 upon the housing 115 initiates the movement of the housing 115 into the protective position. In this case, the housing 115 moves in the direction of the structural element.
[0046] A passive and non-destructive and therefore also reversible reaction chain of the apparatus 105 in response to the triggering signal 130 in the case of a collision or a force that is acting upon the vehicle occurs by means of a yielding holding arrangement of the housing 115 using the holding elements 305 that are illustrated here. The embodiment of the fixing arrangement of the housing 115, which is illustrated here, and therefore the holding arrangement by way of example of a sensor of the device for ascertaining the surroundings, said sensor being received in the housing 115, is stable in the case of mechanical couplings, the frequencies and amplitudes of which fall under normal conditions such as normal driving behavior, airstream or off-road scenarios. The holding arrangement in the form of the holding elements 305 is flexible or breaks or bends to the side in the case of mechanical couplings, the frequencies and amplitudes of which occur typically in the case of the impact effect of a collision with another vehicle, an obstacle or another road user.
[0047]
[0048] In the normal operating state of the vehicle, the fixing actuator 415 is embodied in order to fix the housing-side magnet 405 on the structure-side magnet 410. In this case, the magnets 405, 410 may be held pressed directly onto one another. The fixing actuator 415 is embodied in order to interrupt a fixing arrangement between the magnets 405, 410 in response to the triggering signal. In accordance with this exemplary embodiment, the magnets 405, 410 are poled in such a manner that they repel one another. After the fixing arrangement is interrupted by means of the fixing actuator, the magnets 405, 410 move away from one another. As a consequence, the housing 115 is moved out of the operating position into the protective position. The movement of the housing 115 relative to the structural element 110 is consequently rendered possible using the magnetic force that acts between the magnets 405, 410.
[0049] The structural element 110 in accordance with this exemplary embodiment comprises a through-going opening. The housing 115 here comprises in an exemplary manner two housing-side magnets 405 that respectively by means of a fixing actuator 415 and a structure-side magnet 410 each connect the housing 115 to a structural element 110. The two pairs of magnets 405, 410 are arranged on sides of the through-going opening that lie opposite one another.
[0050] As an alternative to a plurality of pairs of magnets 405, 410, a pair of annular magnets 405, 410 may also be used. In this case, a by way of example likewise annular fixing actuator 415 is sufficient.
[0051] The illustrated structural element 110 is embodied in an exemplary manner as a part of the front body, which optionally comprises foam material in order to protect pedestrians. The two magnets 405, 410 may be embodied as solenoid magnets or as permanent magnets. The magnets 405, 410 are fixed by means of the fixing actuator 415 and are held together by means of the fixing actuator 415. The fixing actuator 415 may be optionally controlled electrically. In this case, the fixing actuator 415 may be actuated using the triggering signal in the form of an electrical control signal in such a manner that the fixing actuator 415 interrupts the fixing arrangement between the magnets 405, 410. As a consequence, the housing 115 is moved relative to the structural element 110 using the magnetic force that acts between the magnets 405, 410, here said housing is moved away from the structural element 110. This is initiated by means of the magnets 405, 410 repelling one another.
[0052]
[0053]
[0054]
[0055] In an alternative to the exemplary embodiment described with the aid of
[0056]
[0057] For this purpose, the movement device 125 in accordance with this exemplary embodiment comprises at least one housing-side magnetic element 705, a structure-side magnetic element 710 and an electromagnet 715 for providing a magnetic field. The electromagnet 715 is embodied in order to initiate a change of the magnetic field in response to the triggering signal in order to render it possible using a magnetic force that acts between the magnetic elements 705, 710 to move the housing 115 relative to the structural element 110. For this purpose, the magnetic elements 705, 710 are arranged opposite one another and are embodied in such a manner that the magnetic elements 705, 710 attract one another.
[0058] In accordance with the illustrated exemplary embodiment, the housing-side magnetic element 705 is embodied as a magnet and the structure-side magnetic element 710 is embodied as a ferromagnetic element. The electromagnet 715 is embodied in order to generate a magnetic field in the operating state of the device for ascertaining the surroundings that is encompassed by the housing 115 in such a manner that said magnetic field opposes the magnetic field of the housing-side magnetic element 705. As a consequence, the magnetic field of the housing-side magnetic element 705 is weakened at least to the extent that the magnetic force that acts between the magnetic elements 705, 710 does not lead to a movement of the housing 1115 in the direction of the structural element 110.
[0059] The housing comprises in accordance with the exemplary embodiment illustrated here two housing-side magnetic elements 705 that are embodied as permanent magnets. An electromagnet 715 is arranged in the region of each of the two housing-side magnetic elements 705, said electromagnet here being shaped as a magnetic coil that may be actuated electrically. The structure-side magnetic element 710 in the form of a ferromagnetic plate is arranged opposite each of the two housing-side magnetic elements 705 in the direction of the vehicle interior of the vehicle. In the exemplary embodiment illustrated here, the two permanent magnets of the housing-side magnetic elements 705 are weakened by means of the respective electromagnet 715. The electromagnet 715 is deactivated in response to the triggering signal and the two housing-side magnetic elements 705 that are illustrated in an exemplary manner attract the structure-side magnetic element 710 in the form of the ferromagnetic plates illustrated here in order to move the housing 115 relative to the structural element 110 in the direction of the structure-side magnetic elements 710 and therefore in the direction of the vehicle interior of the vehicle.
[0060] In accordance with a further exemplary embodiment, the housing-side magnetic element 705 is embodied as a magnet and the structure-side magnetic element 710 is embodied as a further magnet. In this case, the magnetic elements 705, 710 are poled in such a manner that the magnetic elements 705, 710 attract one another. In accordance with one exemplary embodiment, a magnetic field results from the superposition of the magnetic field of the housing-side magnetic element 705 and the magnetic field of the electromagnet 715 in such a manner that the structure-side magnetic element 710 is repelled. The change of the magnetic field of the electromagnet 715, which is initiated by means of the triggering signal, initiates at least one weakening procedure and in accordance with one exemplary embodiment a procedure for interrupting the magnetic field of the electromagnet 715.
[0061]
[0062] The movement device 125 in accordance with the exemplary embodiment illustrated here comprises at least one housing-side pushing element 805 and one structure-side pushing element 810. The pushing elements 805, 810 are embodied so as to be displaced against one another in response to the triggering signal in order to move the housing 115 relative to the structural element 110.
[0063] In the exemplary embodiment that is illustrated here, three housing-side pushing elements 805 and three corresponding structure-side pushing elements 810 are illustrated in an exemplary manner. In a ratchet manner similar to that of a cable tie function, in the case of a suitably large force effect in the form of the force F that is represented by means of the triggering signal 135, said force F acting upon the housing 115 in the case of an impact effect that is acting upon the vehicle, the housing-side pushing element 805 is displaced in the direction of the structure-side pushing element 810. In accordance with the exemplary embodiment that is illustrated here, the structure-side pushing element 810 in this case is shaped in the manner of a rail that is at least in part to receive the housing-side pushing element 805 in order to move the housing 115 relative to the structural element, and in this case to move the housing 115 in the direction of the structural element. The housing-side pushing element 805 is shaped in an exemplary manner as a rod-shaped holder having spherical ends that are arranged on a side that is remote from the housing 115. The structure-side pushing element 810 is shaped in an exemplary manner as a saw tooth-shaped rail into which the housing-side pushing element 805 is pushed in response to the triggering signal, as a result of which the housing 115 is displaced into the vehicle interior. The spherical end of the housing-side pushing element 805 in this case optionally remains outside of the rail of the structure-side pushing element 810 and is supported by said structure-side pushing element.
[0064] Alternatively, the housing-side pushing element 805 is shaped as a tube that is retracted in response to the triggering signal 135 into the structure-side pushing element 810 that is shaped as a further tube or matrix. If the tube of the housing-side pushing element 805 is loaded corresponding to an impact effect that does not correspond to the regular driving operation of the vehicle, the tube of the housing-side pushing element 805 thus yields with a defined force, tapers and is pushed into the matrix or the further tube of the structure-side pushing element 810.
[0065] In the case of the two described variants of the embodiment of the pushing elements 805, 810, the pushing elements are displaced against one another in order to move the housing 115 relative to the structural element in response to the triggering signal and therefore only after a sufficiently large force or characteristic frequency of a collision with the result that said displacement is not triggered erroneously during the regular driving operation. For this purpose, the free ends of the pushing elements 810 that are illustrated in
[0066] The pushing elements 805, 810 may be used in addition or as an alternative to the holding elements that are described with the aid of
[0067]
[0068] The method 900 optionally moreover comprises an identifying step 910 and a providing step 915. In the identifying step 910, the impact effect that is acting upon the vehicle is identified. In the providing step 915, the triggering signal is provided in response to identifying the impact effect that is acting upon the vehicle. The steps 905 and 910 are performed in accordance with one exemplary embodiment prior to the step 905.
[0069] If an exemplary embodiment comprises an and/or link between a first feature and a second feature, this is thus to be read in such a manner that the exemplary embodiment in accordance with one embodiment comprises both the first feature as well as the second feature and in accordance with a further embodiment comprises either only the first feature or only the second feature.