CN113784877A - Communication interface for an external inflatable pedestrian safety structure equipped on a vehicle, associated inflatable structure-vehicle communication protocol and safety module - Google Patents
Communication interface for an external inflatable pedestrian safety structure equipped on a vehicle, associated inflatable structure-vehicle communication protocol and safety module Download PDFInfo
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- CN113784877A CN113784877A CN202080029790.XA CN202080029790A CN113784877A CN 113784877 A CN113784877 A CN 113784877A CN 202080029790 A CN202080029790 A CN 202080029790A CN 113784877 A CN113784877 A CN 113784877A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/36—Protecting non-occupants of a vehicle, e.g. pedestrians using airbags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R2021/01311—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring the braking system, e.g. ABS
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R2021/01322—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value comprising variable thresholds, e.g. depending from other collision parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R2021/26094—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow characterised by fluid flow controlling valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
Abstract
The invention relates to a communication interface (13) between (i) a pedestrian safety module (1) equipped on a vehicle (10) and comprising an external inflatable structure capable of being selectively controlled in its inflation to surround and retain a pedestrian in collision with said vehicle (10), and (ii) a system that processes information from sensors and cameras equipped on said vehicle (10), said interface (13) comprising means to receive from said processing system (3): (i) a control signal for triggering the inflatable structure in response to identification of a risk of collision with a pedestrian, and (ii) characteristic information of the pedestrian and its kinematics relative to the vehicle (10). The received characteristic information includes morphology characterization information derived from processing of images captured by the one or more sensors, the morphology characterization information being processed by the pedestrian safety module to compute a strategy for selectively controlling inflation of the inflatable structure.
Description
Technical Field
The present invention relates to a communication interface for an external inflatable pedestrian safety structure provided on a vehicle.
The invention also relates to a communication protocol between the inflatable structure and a vehicle, and a pedestrian safety module integrated with the inflatable structure.
The field of the invention is that of pedestrian safety in the event of a collision or crash by an autonomous, semi-autonomous or entrusted driving vehicle (whether individual or collective) or by a guided vehicle such as a tram. "pedestrian safety" refers to protection of humans, but the field of the invention also covers the disposal of obstacles of all types of animals or slow subjects.
Background
Pedestrian safety issues are becoming more prominent as entrusted driving vehicles tend to be a widespread development of autonomous or semi-autonomous cars and autonomous ferry vehicles (shuttle). This problem also arises with the vigorous development of trams and guided mobility systems in urban centres.
The driving assistance and autonomous driving will greatly reduce the severity of motor vehicle accidents. However, particularly in cities, the coexistence of pedestrians and various mobility-specific tools (bicycles, scooters, etc.) will always present a significant risk of interaction between these different circulation elements.
These impacts, which usually occur at moderate speeds <40km/h, although not fatal, incapacitate the victim for many years.
Up to now, car manufacturers have been mainly concerned with designing vehicle fronts that reduce the severity of pedestrian impacts, which, in addition, has led to the relative standardization of vehicle grilles, which have become substantially vertical. Furthermore, some manufacturers propose bonnet lifters by implementing suitable pyrotechnic charges and external vehicle airbags, but these systems are actually only used to cushion the impact of the upper part of a pedestrian on the vehicle body, without being systematically successful in keeping the pedestrian on the vehicle, thus causing the risk of falling and further accidents.
Patent US 7,630,806 discloses a pedestrian detection and protection system that implements an external inflatable structure equipped on a vehicle. The detection and protection system comprises a deployable airbag at the front of the vehicle intended to mitigate the impact of a pedestrian on the bonnet of the vehicle, and a net designed to hold the pedestrian and prevent him from passing over the vehicle. The system is controlled by the processing of signals from sensors and analyzed by a shape recognition system, which may incorporate an artificial intelligence approach.
Patent US 5,377,108 discloses an impact prediction system equipped on a motor vehicle and implementing a neural network. If an impact is predicted, the prediction system predicts deployment of an airbag or air pillow.
Document EP 1681213 a2 discloses a collision behavior control device that includes a contact portion disposed in a portion of a front portion of a vehicle, and controls the behavior of a pedestrian or a cyclist by pushing the pedestrian or cyclist upon a collision with the pedestrian or cyclist.
Document US 2007/237027 a1 discloses a collision detecting apparatus for a vehicle, comprising: a first turn signal output unit that detects an intensity of a heat ray radiated from a detection object approaching or contacting the vehicle to output a first direction signal; a second direction signal output unit that detects an ultrasonic wave transmitted from the output element and reflected by the object to be detected to output a second direction signal; an impact signal output unit that detects an impact on a vehicle to output an impact signal; and a control unit.
Document WO 2018/203020 a1 discloses a protection system comprising at least one inflatable safety structure, each associated with a gas generator that can be activated by an external command comprising an electrical signal corresponding to predictive information about an impact originating from an automation system responsible for critical safety functions of the vehicle. The gas generator is configured to generate gas over a period of time such that a total inflation time of the inflatable structure is greater than 50 milliseconds, the inflatable structure being waterproof.
Document US 9802568B 1 discloses an external airbag system that is equipped at the front of a vehicle and arranged to interlock with each other.
Document EP 2905184 a1 discloses a system for detecting a collision of a vehicle with a bicycle, comprising an airbag intended to be deployed on the bonnet of the vehicle and to house a cyclist therein.
Document EP 2775316 a2 discloses a crash attenuation system equipped on a vehicle, which system comprises a plurality of sensors arranged to detect obstacles and a set of airbags.
However, these systems of the prior art have the following drawbacks: individualized handling of a pedestrian before it strikes the vehicle is not allowed and there is a risk of limited protection efficiency. In addition, automobile manufacturers have a variety of systems to process information from sensors and cameras that will be used to identify the risk of collision with a pedestrian and output a signal to trigger an external pedestrian protection structure. This diversity may slow the development of such structures.
The object of the present invention is to solve these drawbacks by providing a communication interface between an external inflatable safety structure equipped on a vehicle and a system for processing information from sensors and cameras integrated into the vehicle.
Disclosure of Invention
This object is achieved with the following communication interfaces: the communication interface is located between (i) a pedestrian safety module equipped on a vehicle and comprising an external inflatable structure whose inflation can be selectively controlled so as to surround and retain a pedestrian in collision with the vehicle, and (ii) a system for processing information originating from one or more sensors equipped on the vehicle, the interface comprising means for receiving from the processing system: (i) a control signal for triggering the inflatable structure in response to identification of a risk of collision with a pedestrian, and (ii) characteristic information of the pedestrian and its relative kinematics with respect to the vehicle.
According to the invention, this received characteristic information comprises morphological characteristic information derived from the processing of images captured by one or more of said sensors, said morphological characteristic information being processed by said pedestrian safety module to calculate an inflation strategy of said inflatable structure.
When the communication interface according to the invention is implemented together with an external inflatable structure comprising a set of airbags that can communicate with each other via valves and whose inflation can be selectively controlled so as to surround and hold a pedestrian in collision with said vehicle, said morphological characterization information is then processed by said pedestrian safety module to calculate a strategy for selectively controlling said valves equipped for said inflatable structure.
The communication interface may also advantageously comprise means for receiving information from said processing system relating to the real-time braking condition of said vehicle.
The information relating to the braking condition particularly comprises information for estimating a distance and/or a braking time until the vehicle stops, and information relating to a road condition.
The information relating to the braking condition may further comprise real-time information relating to the inclination of the front of the vehicle.
The communication interface according to the invention may also comprise means for receiving a video stream originating from a camera equipped on said vehicle during the deployment phase of said inflatable structure.
The communication interface may further comprise means for outputting a signal intended for the processing system for acknowledging receipt of the control signal in response to receipt of a trigger control signal, and means for outputting real-time information relating to the deployment process of the outer inflatable structure.
The real-time information related to the deployment process includes information related to a condition of receiving the pedestrian in the inflatable structure. This information about the condition of receiving said pedestrian comprises in particular information originating from one or more pressure sensors arranged at predetermined points of said inflatable structure.
The real-time information related to the deployment process may further include information related to a control sequence of a plurality of valves arranged to selectively inflate a plurality of air bags within the inflatable structure.
The communication interface according to the invention may also comprise internal means for processing the information received from the vehicle processing system so as to make it compatible with the processing of the selective control unit within the pedestrian safety module.
These internal processing means may in particular be arranged to convert information received from the vehicle processing system in a first predetermined format into information in a second compatible format to allow it to be used by a deployment control unit provided on the pedestrian safety module.
According to another aspect of the present invention, there is provided a communication protocol between a pedestrian safety module comprising an external inflatable structure, the inflation of which can be controlled so as to surround and retain a pedestrian in collision with the vehicle, and a system for processing information from one or more sensors provided on the vehicle, the communication protocol implementing a communication interface according to the invention, the communication protocol comprising:
-receiving a trigger command output by the processing system in response to the processing system identifying a risk of collision with a pedestrian, and
-receiving from the processing system an information characteristic of a morphology of the pedestrian.
According to the invention, the received characteristic information comprises morphological characteristic information derived from the processing of images captured by one or more of the sensors, said morphological characteristic information being processed by the pedestrian safety module to calculate an inflation strategy of the inflatable structure.
The inflatable structure implementing the communication protocol according to the invention may advantageously comprise a set of airbags capable of communicating with each other via valves, and the inflation of said airbags can be selectively controlled so as to surround and retain a pedestrian in collision with said vehicle.
The communication protocol according to the invention further comprises: receiving information indicative of a relative kinematic characteristic of the identified pedestrian with respect to the trajectory of the vehicle, receiving information relating to a real-time braking condition of the vehicle, and/or receiving information relating to a condition of a road on which emergency braking is performed.
The communication protocol according to the present invention may also be defined to further include: receiving real-time information related to a tilt of a front surface of the vehicle, and receiving a video stream of a deployment scene of the inflatable structure and the inflatable structure receiving the pedestrian during deployment of the inflatable structure.
The communication protocol according to the invention may further comprise outputting a signal intended for said processing system for acknowledging the reception of said control signal in response to the reception of a trigger control signal, and outputting real-time information relating to the deployment process of said external inflatable structure.
The communication interface according to the invention may also advantageously comprise processing of the information received from the vehicle processing system to make it compatible with the processing of a selective control unit within the pedestrian safety module.
The communication protocol also includes processing information received from the vehicle processing system in a first predetermined format into information in a second compatible format to allow it to be used by a deployment control unit equipped on the pedestrian safety module.
According to a further aspect of the invention, a pedestrian safety module arranged in a front surface of a vehicle is proposed, the pedestrian safety module comprising a folded encapsulated inflatable structure, a gas generator arranged for filling the inflatable structure on command, a control unit of the gas generator, and a communication interface according to the invention between the pedestrian safety module and a system processing information originating from one or more sensors equipped on the vehicle.
Definition of
The following are definitions of terms used in the following description to designate components of the protection equipment and deployment control system according to the invention:
pedestrian:
people walking, standing or on the ground, individually or in groups. The technical services provided for pedestrians can here be extended to bicycle users or any other personal movement pattern, animals or slow objects.
A protection module:
a tank containing an inflatable structure and a gas generating system attached to the vehicle.
A sensor:
all types of sensors intended to be carried on or available in a vehicle, such as cameras operating in the visible or infrared, radars, lidar, ultrasonic sensors, or accelerometers, used alone or in combination with one or more other sensors.
The communication protocol is as follows:
a set of rules and steps for exchanging information to enable the pedestrian safety module and the vehicle processing system to work in concert.
An external inflatable structure:
a set of airbags that can communicate with each other and whose inflation can be selectively controlled.
An air bag:
an inflatable cuff having a variable shape (e.g., a tubular shape) can receive inflation gas and can communicate with one or more other air bags according to a deployment strategy.
And (3) unfolding the strategy:
a set of control signals for the fill valve, gas valve or exhaust and actuator.
A valve:
a controlled gas passage opening/closing system is disposed between a duct for supplying an inflation gas and an inflatable air bag or between two air bags. These valves may be fitted with a non-return device as required. All valves are controlled by wires or by any other connection system, including flow control technology, or wirelessly using standard radio communication technology. In a particular embodiment, the energy for activating the control of the valves is provided by a capacitor via a known bus system. The activation command is sent by the electronic chip, while the lines ensure the charging of the capacitor, the quality control of the circuit and the transmission of the command to the chip.
Gas valve or exhaust:
a static gas channel opening/closing system, arranged between the duct for supplying inflation gas and the inflatable airbag or between the two airbags, which is normally in closed mode (not communicating) by means of a cover and switches to open mode (communicating) in response to a pressure above a predetermined pressure level. The gas valve or vent may also be implemented in the form of a calibrated leak to delay pressurization of the downstream gas bag.
A gas generator:
pyrotechnic or non-pyrotechnic gas generating systems. The structure is deployed by a gas generator. Some air bags are pressurized by gas from other air bags outside of the operation of the generator. In some cases, an external generator may be used.
Drawings
The present invention will be better understood from the following detailed description with reference to the drawings, in which:
FIG. 1 schematically illustrates an example of a layout of a communication interface according to the present invention located within a front surface of a vehicle;
FIG. 2 is a block diagram of a pedestrian security module according to the present invention;
FIG. 3 illustrates the basic steps of a process for protecting a pedestrian implementing a pedestrian safety module in accordance with the present invention;
FIG. 4 illustrates a combination of signals and information transmitted via a first embodiment of a communication interface according to the present invention;
FIG. 6 is a block diagram of a second embodiment of a bi-directional communication interface in accordance with the present invention; and
fig. 7 schematically illustrates an implementation of a communication protocol according to the invention in the configuration of fig. 6.
Detailed Description
First, the pedestrian security module 1 and the communication interface 13 thereof will be described with reference to fig. 1 and 2, and a communication protocol implemented by the interface 13 will be described. The pedestrian safety module 1 is placed inside the vehicle 10 next to the front surface 16 of the vehicle 10 and comprises a container box 100 attached to a structural element (not shown) of the vehicle by means of an attachment boss 11.
The pedestrian safety module 1 includes: a power supply interface 12 internally connected to the DC power supply unit 120 and designed to receive a DC connector arranged at one end of a power supply cable 15, the other end of the power supply cable 15 being connected to the power supply unit 2; and a communication interface 13 in the form of a digital port provided for receiving a connector arranged at one end of a communication cable 14, the other end of which is connected to the information processing system 3 integrated with one or more CPU computers. The information processing system 3 is located at a single location within the vehicle 10 or distributed across multiple locations of the vehicle. The information processing system 3 is dedicated to processing signals originating from a set of sensors equipped on the vehicle 10, for example sensors of the ultrasonic, radar, lidar and visible or infrared camera type. This processing includes in particular data fusion and signal and image processing operations, which are intended to identify in the broadest sense the risk of collision with a pedestrian. Thus, the pedestrian may be standing, sitting or lying down, or may be stationary or moving, either from the right or from the left. The pedestrian may carry a bag, and may also be associated with a bicycle, scooter, unicycle or skateboard or any other personal mobility equipment.
The pedestrian safety module 1 comprises, within its box 100 forming the housing, a block 20 containing a stored inflatable structure rolled up and provided with a front surface 21 intended to be retracted during deployment of the inflatable structure. The pedestrian safety module 1 further comprises a control unit 24, which is connected on the one hand to the communication interface 13; and on the other hand to a selective control unit 22 which controls a valve 27 for inflating a set of airbags (not shown in figure 2) constituting the inflatable structure, and to a gas generator 23 arranged for inflating the airbags via the valve 27.
The control unit 24, which is powered by the power supply unit 120, comprises an adaptation module 28, which is arranged to adapt and convert signals and information received from the vehicle processing system 3, and a calculation module 29, which is arranged to process the received and converted signals and information to generate a signal 25 for controlling the gas generator 23 and a signal 26 for controlling the inflation valve 27.
A first embodiment of a communication protocol according to the present invention will now be described with reference to fig. 3 and 4. Consider a vehicle 10 equipped with a pedestrian safety module, such as the pedestrian safety module just described with reference to fig. 1 and 2.
The vehicle 10 travelling at the speed Vo detects (sequence 30) a pedestrian P by means of one or more sensors 30, such as one or more cameras, one or more radars, lidar or infrared camera IR. The signals generated by the sensors are processed in a processing system 3 to identify a possible risk of collision with the pedestrian, despite the activation of the emergency braking system (AEB) with which the vehicle is equipped. If the processing system 3 identifies a proven risk of collision (in particular by implementing artificial intelligence techniques), a decision is made To trigger the inflatable structure, as a result of which, at the instant To, a trigger command 41 is output via the communication protocol and received by the communication interface 13 of the pedestrian safety module 1.
At the same time, the processing system 3 sends to the pedestrian safety module 1 information 42 relating to the form of the pedestrian P and information 43 relating to the kinematics with respect to the vehicle 10. The morphological characterization information 42 comes from the processing of the images captured by the cameras equipped on the vehicle 10 and enables the positioning of the pedestrian's morphological envelope 47 on the graphical representation 47 of the deployed inflatable structure and will enable the calculation of strategies to selectively control the valves equipped for this inflatable structure 4.
Then, at the deceleration speed VDThe inflatable structure 4 is deployed in front of the vehicle 10 (sequence 31), then fully deployed before reaching the pedestrian P (time T)D). At the moment Tc when the bottom of the inflatable structure 4 comes into contact with the foot of the pedestrian, the pedestrian then leans, leaning on the inflatable structure 4, while the vehicle 10 is still moving at the speed Vc (sequence 32). The inflatable structure 4 is then closed over the pedestrian P to ensure that the pedestrian is not thrown in front of the vehicle 10 and that the pedestrian is held within the inflatable structure 4 until the vehicle 10 comes to a complete stop.
The vehicle processing system 3 has calculated the relative kinematic information 43 based on the signals received from the sensors 30 equipped on the vehicle. The relative kinematic information 43 may include real-time data relating to the trajectory of the pedestrian P, in particular relating to the angle of incidence of the trajectory, and data relating to the orientation of the pedestrian P relative to the axis of movement of the vehicle 10.
The processing system 3 also outputs a video control stream 44, which is generated from a stream received from a camera 48, the camera 48 being equipped on the vehicle and having a field of view that includes the inflatable structure being deployed, and information 45 relating to the real-time vehicle braking condition 10. The braking condition information 45 includes information output by the AEB emergency braking system 49, such as deceleration and/or braking torque information.
The communication interface 13 of the pedestrian security module 1 is arranged to receive a set 40 of trigger commands 41, information characterizing information 42, pedestrian kinematics information 43, a video stream 44 and braking condition information 45.
The various sequences for outputting the trigger/unwind commands are part of the communication protocol according to the present invention.
It should be noted that it is contemplated that some configurations of the communication interface do not include receiving a video stream or receiving information related to a braking condition.
A second embodiment of the communication protocol according to the present invention will now be described with reference to fig. 5 and 6, together with a communication interface implementing the protocol and a pedestrian security module incorporating the communication interface.
The pedestrian safety module 1 'comprises a bidirectional communication interface 13' arranged, on the one hand, to receive a set of information 40 output by the vehicle processing system 3, such as the set just described with reference to figures 3 and 4, and, on the other hand, to output a set of information 50 to the processing system 3, the set of information 50 comprising: (i) a signal for confirming the reception of the triggering command, generated by the calculation unit 29 ', and (ii) pressure information output by the signal processing unit 54, generated by a set of pressure sensors 51, 52, 53 arranged at predetermined points of the inflatable structure 4, which inflatable structure 4 is initially folded and rolled up inside the storage enclosure 20'.
The calculation unit 29 'connected to the communication interface 13' via the adaptation/conversion module 28 'is designed to control the deployment of the inflatable structure 4 according to the information received by the communication interface 13'.
Referring To fig. 6, at a time To, after detecting the risk of collision and identifying the pedestrian P, the processing system 3 of the vehicle 10 outputs a trigger command To the pedestrian safety module 1' and then outputs information relating To the kinematics of the pedestrian P and To the braking condition of the vehicle 10.
The communication interface 13 'of the pedestrian safety module 1' receives the trigger command and the information 40 and firstly sends back an acknowledgement of the reception of the signal, followed by a representation that the pedestrian P is deploying or has been at the time TDPressure information of a real-time contact area of an air bag of the deployed inflatable structure. The vehicle processing system 3 and the emergency brake control unit may use this pressure information, in particular to adjust the braking of the vehicle, to control the axial inclination of the vehicle during braking.
At time Tc, the pedestrian P and the vehicle are presentThe bottom of the forward deployed inflatable structure 4 of the vehicle 10 is in contact. The deployed structure will then catch, surround and hold the pedestrian until the vehicle 10 at time TFStopping the operation until the operation is finished.
The invention is naturally not limited to the examples just described and many other configurations can be envisaged within the framework of the invention.
The claims (modification according to treaty clause 19)
1. A communication interface (13, 13 ') between (i) a pedestrian safety module (1, 1 ') equipped on a vehicle (10) and comprising an external inflatable structure (4) whose inflation can be selectively controlled so that it contacts a pedestrian who has collided with the vehicle (10), and (ii) a system (3) for processing information originating from one or more sensors (30) equipped on the vehicle (10), the interface (13, 13 ') comprising means for receiving from the processing system (3): (i) a control signal (41) for triggering the inflatable structure (4) in response to the identification of a risk of collision with a pedestrian (P), and (ii) characteristic information (42) of the pedestrian (P) and characteristic information (43) of the relative kinematics of the pedestrian (P) with respect to the vehicle (10), the received characteristic information comprising morphological characteristic information derived from processing of images captured by one or more of the sensors, the morphology characterization information is processed by the pedestrian safety module to calculate an inflation strategy of the inflatable structure (4), characterized in that the external inflatable structure comprises a set of airbags capable of communicating with each other and the inflation of said set of airbags can be selectively controlled so as to surround and retain a pedestrian in collision with the vehicle (10).
2. The communication interface (13, 13') according to claim 1, characterized in that said morphological characterization information is processed by said pedestrian safety module to calculate a strategy for selectively controlling valves equipped for said inflatable structure (4).
3. The communication interface (13, 13') according to one of claims 1 or 2, characterized in that it further comprises means for receiving information (45) from the processing system (3) about the real-time braking condition of the vehicle (10).
4. The communication interface (13, 13') according to claim 3, characterized in that the information (45) relating to the braking condition comprises in particular information for estimating a distance and/or a braking time until the vehicle (10) stops.
5. The communication interface (13, 13') according to one of claims 3 or 4, characterized in that the information (45) relating to the braking condition comprises information relating to a road condition.
6. The communication interface (13, 13') according to one of claims 3 to 5, characterized in that the information (45) relating to the braking condition comprises real-time information relating to the inclination of the front of the vehicle (10).
7. The communication interface (13, 13') according to one of the preceding claims, further comprising means for receiving a video stream (44) originating from a camera (48) equipped on the vehicle (10) during a deployment phase of the inflatable structure (4).
8. The communication interface (13') according to one of the preceding claims, further comprising means for outputting a signal intended for the processing system (3) for acknowledging the reception of the control signal in response to the reception of a trigger control signal (41).
9. The communication interface (13 ') according to claim 8, characterized in that it further comprises means (13', 50) for outputting real-time information relating to the deployment process of the external inflatable structure (4).
10. The communication interface (13') according to claim 9, wherein the real-time information relating to the deployment process comprises information relating to a condition of receiving the pedestrian (P) in the inflatable structure (4).
11. The communication interface (13') according to claim 10, wherein said information relating to the condition of receiving the pedestrian (P) comprises information originating from a plurality of pressure sensors (51, 52, 53) arranged at predetermined points of the inflatable structure (4).
12. A communication interface (13') according to one of claims 8 to 11, wherein the real-time information relating to the deployment process further comprises information relating to a control sequence of a plurality of valves arranged to selectively inflate a plurality of air bags within the inflatable structure (4).
13. The communication interface (13, 13 ') according to one of the preceding claims, characterized in that it further comprises internal means (28, 28 ') for processing information received from the vehicle's processing system (3) in order to make it compatible with the processing of a selective control unit (29, 29 ') within the pedestrian safety module (1, 1 ').
14. The communication interface (13, 13 ') according to claim 13, characterized in that the internal processing means (28, 28 ') are arranged to convert information in a first predetermined format received from the processing system (3) of the vehicle into information in a second compatible format in order to enable the information to be used by a deployment control unit (22) equipped on the pedestrian safety module (1, 1 ').
15. A Communication Protocol (CP) between a pedestrian safety module (1, 1 ') comprising an external inflatable structure (4) whose inflation can be controlled so that it contacts a pedestrian in collision with a vehicle (10), and a system (3) for processing information from one or more sensors (30) equipped on the vehicle (10), said communication protocol implementing a communication interface (13, 13') according to one of the preceding claims, said communication protocol comprising:
-receiving a trigger command (41) output by the processing system (3) in response to the processing system (3) identifying a risk of collision with a pedestrian (P), and
-receiving from the processing system (3) information characteristic of the morphology of the pedestrian (P),
the received characteristic information comprises morphological characteristic information derived from the processing of images captured by one or more of the sensors, said morphological characteristic information being processed by the pedestrian safety module to calculate an inflation strategy of the inflatable structure (4), characterized in that the communication protocol further comprises: a set of airbags capable of communicating with each other is selectively controlled so as to surround and hold a pedestrian who collides with the vehicle.
16. The communication protocol of claim 15 wherein the morphology characterization information is processed by the pedestrian safety module to calculate a strategy for selectively controlling the valve.
17. The Communication Protocol (CP) according to one of claims 15 or 16, characterized in that it further comprises: information representative of the relative kinematics of the identified pedestrian (P) relative to the trajectory of the vehicle (10) is received.
18. The Communication Protocol (CP) according to one of claims 15 or 17, characterized in that it further comprises: information relating to a real-time braking condition of the vehicle (10) is received.
19. The Communication Protocol (CP) according to claim 18, characterized in that it further comprises: information relating to a condition of a road on which emergency braking is performed is received.
20. The Communication Protocol (CP) according to one of claims 15 to 19, characterized in that it further comprises: receiving real-time information relating to the inclination of the front surface of the vehicle (10).
21. The Communication Protocol (CP) according to one of claims 15 to 20, characterized in that it further comprises: receiving a video stream (44) of a deployment scene of the inflatable structure (4) and of the pedestrian (P) received by the inflatable structure (4) during deployment of the inflatable structure (4).
22. The Communication Protocol (CP) according to one of claims 15 to 21, characterized in that it further comprises: -outputting a signal intended for the processing system (3) for acknowledging the reception of the control signal (41) in response to the reception of a trigger control signal (41).
23. The Communication Protocol (CP) according to one of claims 15 to 22, characterized in that it further comprises: outputting real-time information relating to the process of deploying the outer inflatable structure (4).
24. The Communication Protocol (CP) according to one of claims 15 to 23, characterized in that it further comprises: -processing information received from the processing system (3) of the vehicle (10) in order to make it compatible with the processing of a selective control unit within the pedestrian safety module (1, 1').
25. The Communication Protocol (CP) according to claim 24, characterized in that it further comprises: -processing information in a first predetermined format received from a processing system (3) of the vehicle (10) to generate information in a second compatible format to enable the information to be used by a deployment control unit provided on the pedestrian safety module (1, 1').
26. A pedestrian safety module (1, 1') arranged in a front surface of a vehicle (10), the pedestrian safety module comprising: -a folded encapsulated inflatable structure (4), -a gas generator (23) arranged for filling the inflatable structure (4) on command, -a control unit (29) of the gas generator (23), the pedestrian safety module implementing a communication protocol according to one of claims 15 to 25, characterized in that it is arranged to communicate with a system (3) for processing information originating from one or more sensors (30) equipped on the vehicle (10) via a communication interface (13, 13') according to one of claims 1 to 13.
Claims (26)
1. A communication interface (13, 13 ') between (i) a pedestrian safety module (1, 1 ') equipped on a vehicle (10) and comprising an external inflatable structure (4) whose inflation can be selectively controlled so as to surround and retain a pedestrian in collision with the vehicle (10), and (ii) a system (3) for processing information originating from one or more sensors (30) equipped on the vehicle (10), the interface (13, 13 ') comprising means for receiving from the processing system (3): (i) -a control signal (41) for triggering the inflatable structure (4) in response to the identification of the risk of collision with a pedestrian (P), and (ii) characteristic information (42) of the pedestrian (P) and characteristic information (43) of the relative kinematics of the pedestrian (P) with respect to the vehicle (10), characterized in that the received characteristic information comprises morphological characterization information derived from the processing of images captured by one or more of the sensors, said morphological characterization information being processed by the pedestrian safety module to calculate an inflation strategy of the inflatable structure (4).
2. A communication interface (13, 13') according to claim 1, implemented together with an external inflatable structure (4) comprising a set of airbags that can communicate with each other via valves and whose inflation can be selectively controlled so as to surround and maintain a pedestrian in collision with the vehicle (10), characterized in that said morphological characterization information is processed by said pedestrian safety module to calculate a strategy for selectively controlling said valves equipped for said inflatable structure (4).
3. The communication interface (13, 13') according to one of claims 1 or 2, characterized in that it further comprises means for receiving information (45) from the processing system (3) about the real-time braking condition of the vehicle (10).
4. The communication interface (13, 13') according to claim 3, characterized in that the information (45) relating to the braking condition comprises in particular information for estimating a distance and/or a braking time until the vehicle (10) stops.
5. The communication interface (13, 13') according to one of claims 3 or 4, characterized in that the information (45) relating to the braking condition comprises information relating to a road condition.
6. The communication interface (13, 13') according to one of claims 3 to 5, characterized in that the information (45) relating to the braking condition comprises real-time information relating to the inclination of the front of the vehicle (10).
7. The communication interface (13, 13') according to one of the preceding claims, further comprising means for receiving a video stream (44) originating from a camera (48) equipped on the vehicle (10) during a deployment phase of the inflatable structure (4).
8. The communication interface (13') according to one of the preceding claims, further comprising means for outputting a signal intended for the processing system (3) for acknowledging the reception of the control signal in response to the reception of a trigger control signal (41).
9. The communication interface (13 ') according to claim 8, characterized in that it further comprises means (13', 50) for outputting real-time information relating to the deployment process of the external inflatable structure (4).
10. The communication interface (13') according to claim 9, wherein the real-time information relating to the deployment process comprises information relating to a condition of receiving the pedestrian (P) in the inflatable structure (4).
11. The communication interface (13') according to claim 10, wherein said information relating to the condition of receiving the pedestrian (P) comprises information originating from a plurality of pressure sensors (51, 52, 53) arranged at predetermined points of the inflatable structure (4).
12. A communication interface (13') according to one of claims 8 to 11, wherein the real-time information relating to the deployment process further comprises information relating to a control sequence of a plurality of valves arranged to selectively inflate a plurality of air bags within the inflatable structure (4).
13. The communication interface (13, 13 ') according to one of the preceding claims, characterized in that it further comprises internal means (28, 28 ') for processing information received from the vehicle's processing system (3) in order to make it compatible with the processing of a selective control unit (29, 29 ') within the pedestrian safety module (1, 1 ').
14. The communication interface (13, 13 ') according to claim 13, characterized in that the internal processing means (28, 28 ') are arranged to convert information in a first predetermined format received from the processing system (3) of the vehicle into information in a second compatible format in order to enable the information to be used by a deployment control unit (22) equipped on the pedestrian safety module (1, 1 ').
15. A Communication Protocol (CP) between a pedestrian safety module (1, 1 ') comprising an external inflatable structure (4) whose inflation can be controlled so as to surround and hold a pedestrian in collision with a vehicle (10), and a system (3) for processing information from one or more sensors (30) equipped on the vehicle (10), said communication protocol implementing a communication interface (13, 13') according to one of the preceding claims, said communication protocol comprising:
-receiving a trigger command (41) output by the processing system (3) in response to the processing system (3) identifying a risk of collision with a pedestrian (P), and
-receiving from the processing system (3) information characteristic of the morphology of the pedestrian (P),
characterized in that the received characteristic information comprises morphological characteristic information derived from the processing of images captured by one or more of the sensors, said morphological characteristic information being processed by the pedestrian safety module to calculate an inflation strategy of the inflatable structure (4).
16. A communication protocol according to claim 15 implemented with an inflatable structure comprising a set of airbags that can communicate with each other via a valve, wherein the morphology characterization information is processed by the pedestrian safety module to calculate a strategy for selectively controlling the valve.
17. The Communication Protocol (CP) according to one of claims 15 or 16, characterized in that it further comprises: information representative of the relative kinematics of the identified pedestrian (P) relative to the trajectory of the vehicle (10) is received.
18. The Communication Protocol (CP) according to one of claims 15 or 17, characterized in that it further comprises: information relating to a real-time braking condition of the vehicle (10) is received.
19. The Communication Protocol (CP) according to claim 18, characterized in that it further comprises: information relating to a condition of a road on which emergency braking is performed is received.
20. The Communication Protocol (CP) according to one of claims 15 to 19, characterized in that it further comprises: receiving real-time information relating to the inclination of the front surface of the vehicle (10).
21. The Communication Protocol (CP) according to one of claims 15 to 20, characterized in that it further comprises: receiving a video stream (44) of a deployment scene of the inflatable structure (4) and of the pedestrian (P) received by the inflatable structure (4) during deployment of the inflatable structure (4).
22. The Communication Protocol (CP) according to one of claims 15 to 21, characterized in that it further comprises: -outputting a signal intended for the processing system (3) for acknowledging the reception of the control signal (41) in response to the reception of a trigger control signal (41).
23. The Communication Protocol (CP) according to one of claims 15 to 22, characterized in that it further comprises: outputting real-time information relating to the process of deploying the outer inflatable structure (4).
24. The Communication Protocol (CP) according to one of claims 15 to 23, characterized in that it further comprises: -processing information received from the processing system (3) of the vehicle (10) in order to make it compatible with the processing of a selective control unit within the pedestrian safety module (1, 1').
25. The Communication Protocol (CP) according to claim 24, characterized in that it further comprises: -processing information in a first predetermined format received from a processing system (3) of the vehicle (10) to generate information in a second compatible format to enable the information to be used by a deployment control unit provided on the pedestrian safety module (1, 1').
26. A pedestrian safety module (1, 1') arranged in a front surface of a vehicle (10), the pedestrian safety module comprising: -a folded encapsulated inflatable structure (4), -a gas generator (23) arranged for filling the inflatable structure (4) on command, -a control unit (29) of the gas generator (23), the pedestrian safety module implementing a communication protocol according to one of claims 15 to 25, characterized in that it is arranged to communicate with a system (3) for processing information originating from one or more sensors (30) equipped on the vehicle (10) via a communication interface (13, 13') according to one of claims 1 to 13.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1902253 | 2019-03-05 | ||
| FR1902253A FR3093483B1 (en) | 2019-03-05 | 2019-03-05 | Communication interface for an external inflatable pedestrian safety structure fitted to a vehicle, inflatable structure-vehicle communication protocol and associated safety module |
| PCT/FR2020/050453 WO2020178533A1 (en) | 2019-03-05 | 2020-03-05 | Communication interface for an external inflatable pedestrian safety structure equipping a vehicle, associated inflatable structure-vehicle communication protocol and safety module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113784877A true CN113784877A (en) | 2021-12-10 |
Family
ID=67999722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080029790.XA Pending CN113784877A (en) | 2019-03-05 | 2020-03-05 | Communication interface for an external inflatable pedestrian safety structure equipped on a vehicle, associated inflatable structure-vehicle communication protocol and safety module |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3934943A1 (en) |
| CN (1) | CN113784877A (en) |
| FR (1) | FR3093483B1 (en) |
| WO (1) | WO2020178533A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020178533A1 (en) | 2020-09-10 |
| WO2020178533A4 (en) | 2020-10-22 |
| FR3093483A1 (en) | 2020-09-11 |
| EP3934943A1 (en) | 2022-01-12 |
| FR3093483B1 (en) | 2022-04-01 |
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