WO2002048969A2 - Dispositif electronique a installer sur des vehicules et/ou des bateaux pour obtenir des informations particulierement utiles en cas d'accident - Google Patents

Dispositif electronique a installer sur des vehicules et/ou des bateaux pour obtenir des informations particulierement utiles en cas d'accident Download PDF

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Publication number
WO2002048969A2
WO2002048969A2 PCT/EP2001/014454 EP0114454W WO0248969A2 WO 2002048969 A2 WO2002048969 A2 WO 2002048969A2 EP 0114454 W EP0114454 W EP 0114454W WO 0248969 A2 WO0248969 A2 WO 0248969A2
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
data
accident
memory
processor
Prior art date
Application number
PCT/EP2001/014454
Other languages
English (en)
Other versions
WO2002048969A3 (fr
Inventor
Roberto Cavallotti
Sauro Silvestrini
Original Assignee
N'oxid S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by N'oxid S.P.A. filed Critical N'oxid S.P.A.
Priority to EP01985856A priority Critical patent/EP1342214A2/fr
Publication of WO2002048969A2 publication Critical patent/WO2002048969A2/fr
Publication of WO2002048969A3 publication Critical patent/WO2002048969A3/fr

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • G07C5/0875—Registering performance data using magnetic data carriers
    • G07C5/0891—Video recorder in combination with video camera

Definitions

  • the device comprises a microprocessor unit which interacts with at least a memory element of continuous operation type, intended to memorise the video information coming from at least one microvideocamera mounted aboard the vehicle and directed toward the exterior, and digital information coming by the central unit belonging to the said vehicle, the said microprocessor unit being activated or de-activated by the ignition key of the vehicle itself and by an inertial sensor which modifies its status whenever the vehicle is subjected to an impact.
  • a timer to delay the de- activation of said microprocessor unit for a predetermined time from the intervention of the said impact sensor so that inside said memory there remain stored the events relating for example to ten seconds prior to the accident and five seconds subsequent to the accident itself.
  • the vehicles and particularly those of older generation, are not provided with an electronic central unit which can supply digital data relating to the travel speed, to the acceleration, to the status of switched on or off and to other parameters, so that is becomes difficult and expensive to obtain these parameters and in any case to provide for a device which can be mounted easily and in a correct manner on every type of vehicle.
  • the videocameras can be dazzled by the rain on the windshield.
  • the glasses of the videocameras and of the vehicle can be misted or become dirty, so that for the correct operation of the said videocameras it would be necessary that the user provides for a periodic cleaning of the said glasses. It is evident that these conditions limit the performances and reliability of a detection system of optoelectronic type.
  • the microvideocameras While the device for the memorisation of the data can be installed at one point of the vehicle which is reasonably protected, the microvideocameras must be located in such positions able to "view", so that they are liable to be particularly exposed and can be mechanically involved in the accident and can be broken at the moment of the impact of the vehicle, thus preventing the film shooting relating to the after event .
  • a further inconvenience derives form the timing of shooting of the videocameras, which does not take place according to real time.
  • Situations of vehicles which run at high speed and in different directions could not show in a clear manner some particulars. For example, already at a speed of 180 km/h, in 200 milliseconds a vehicle travels about for 10 metres.
  • the present optoelectronic systems could not detect some events with these timings. 5
  • the invention intends to obviate to these and other inconveniences and limitations of the present systems, by adopting the following idea of solution. Parallely to the real video shooting effected by the videocameras, or alternately to this, there is effected a virtual video shooting which is much more precise and coincident, by means of accelerometric devices and preferably also by means of an electronic
  • Figure 1 shows a block diagram of a portion of the device according to the invention, combined with the optoelectronic device of known type;
  • Figure 2 shows a block diagram of the device according to the invention, with or without combination with optoelectronic sensors
  • Figure 3 is a flow chart illustrating the operation of the device according to the
  • Figure 4 shows a block diagram which consents to obtain information from traffic lights, to interface them with the data obtained by the device according to the invention, particularly if not provided with optoelectronic sensors.
  • reference numeral 1 indicates the optoelectronic device of known
  • microprocessor electronic unit Z interacting with a first and possibly with a second solid state digital memory device W and W1 intended to store information obtained through at least one microvideocamera A located in a protected position inside the motor vehicle and through the connection to the electronic central unit B of the same motor vehicle, which supplies the data relating to the date, hour, speed, acceleration and others.
  • the processor Z can be activated and de-activated by means of the car ignition key C2 and can be de-activated by the intervention of an inertial sensor C1 which senses impacts imparted to the vehicle concurrently with an accident.
  • a timer T delays for a predetermined time the detection and storing of the data by the memory units W, W1 , so as to acquire sufficient data preceding the accident and subsequent to the accident itself. If the sensor C1 has a sufficiently high sensibility, it may happen that it intervenes also when the vehicle is subjected to stresses caused by road bumps. After the intervention of the sensor C1 there intervenes the timer T and simultaneously optical and/or acustical signallers E are activated, which signal to the user that the device is going to be blocked.
  • the user can act upon a button D in order to annul the alarm signal generated by said sensor C1 , by leaving the processor Z active or by resetting it for the acquisition of data from the units A and B.
  • the optoelectronic device 1 can be equipped with a system 2 consisting of at least three accelerometers operating on three axes X, Y and Z perpendiculars to one another, two of which are arranged horizontally in order to detect the longitudinal and transversal accelerations of the vehicle, while the other axis is arranged vertically to detected to detect the upward and downward accelerations of the vehicle.
  • the signals generated by the block or unit 2 are filtered by a low-pass filter 3 and are finally sent to the processor Z.
  • At least one electronic gyroscope 4 and the signals generated by this very accurate electronic compass, through the subsequent block 5 of analogic/digital conversion, are supplied to the processor Z which will be set for processing also the data coming from the blocks 2
  • the processor Z which will be set for processing also the data coming from the blocks 2
  • the gyroscope block 4 comprises accelerometric devices, these can be in part employed to realise the block 2 or vice versa the accelerometers of this block can be employed to realise block 4.
  • the data detected by blocks 2 and 4 are acquired by the memory unit of the device for example each millisecond, and since they are digital data they are for example added to the ones supplied by block B of the said known device 1 , provided that this block is available (see after).
  • the device freezes the packages of data relating to the latest instants around the accident itself, for example relating to the latest ten seconds before and five seconds after the accident and this applies also both for the data relating to the real video film, supplied by the micro video cameras A, and for the numerical data supplied by the blocks 2 and 4.
  • the information relating to the accident contained in the memory block W and/or W1 are downloaded by means of a suitable interface inside a personal computer and are processed by a dedicated program. While the real filmed sequence will be directly available, it will be possible to process the data from the blocks 2 and 4 in order to obtain a virtual film of the dynamics of the accident, by introducing into the processing model the data relating to the type of involved vehicle, extracted from a suitable library which will specify also the exact location of the device on the vehicle frame.
  • the bidimensional investigation of the accident consists substantially in the elaboration of several graphs combined between them to show for instance the distance covered as a function of time, the paths followed during the time by the vehicle along the three sensible axes of the accelerometers, the distances covered and the relating speeds.
  • a slider can be provided which upon movement onto the graphs suitably aligned and/or superposed, will consent to detect at the same instant the values of the different parameters.
  • the three-dimensional investigation consists in an animated three-dimensional reconstruction of the accident. It can be of important support to the real filmed sequence, in case of lacking or not clear photograms for the previously mentioned reasons, inasmuch as it supplies an exact information of the path and of the trim of the vehicle, which can be visualised both from the point of view of the driver, and from any point selected in the space outer to the vehicle.
  • the maximum of information will be available if in the same accident there are involved vehicles provided with the same device of the type under discussion, since the data collected by these can interact between them in the context of a same animated filmed sequence, by utilising the information relating to the recording of the hour and of the absolute direction of travel.
  • the exact instant of the impact, determined by the impact sensor C1 will be used as point or origin for the necessary synchronisation of the events and in order to compensate for the unavoidable differences of time acquired by the blocks B.
  • the argument concerning the time will be further discussed in the description with an important consideration.
  • the interaction of the methods of investigation resides in the fact that all of the three investigations, the bidimensional one and the real video and virtual video, being precision synchronised, can be if required visualised jointly on the same video screen, so that to each one of the photograms of the real video there can be associated the corresponding situation plotted on the bidimensional graphs and the photogram of the virtual animation.
  • the ratio between the production costs of an optoelectronic device of known type and the costs of the novel portion of the device according to the invention is of about 5 to 1 and in consideration of the fact that the same device according to the invention can be used independently of the known device, by the present patent application it is intended to protect also the device alone for the dynamic detection with a limited number of video, cameras or without these components, according to the diagram of Figure 2.
  • Reference numeral 6 indicates the microprocessor processing unit which is switched on through the ignition key 7 of the vehicle and through a small buffer battery 107, which is useful also for maintaining the stored data in the memories of the unit 6.
  • Reference numerals 2, 3 indicate the block relating to the accelerometers and numerals 4 and 5 indicate the blocks relating to the gyroscope system.
  • the impact sensor which controls the blocking of the operation of the apparatus can be shunted from the system of the accelerometers, upstream of the low-pass filter and at the outlet of a second low-pass filter 103 calibrated at a higher frequency than that of the preceding filter 3.
  • the device can be advantageously provided with a module 8 of electronic clock, to supply the processor 6 with the information relating to the date and hour, and this module can be for example of the type DCF, radio-controlled, of great precision, so as to realise a safe phase connection between all the devices of the type according to the invention mounted on different vehicles.
  • this module can be for example of the type DCF, radio-controlled, of great precision, so as to realise a safe phase connection between all the devices of the type according to the invention mounted on different vehicles.
  • From the interaction of the modules 8 and 2, 3 it is possible to obtain, by means of known equations, digital information relating to the acceleration and to the speed of travel of the vehicle, even if this latter is not provided with the central unit B according to the previous patent or if it is provided with a central unit which is not apt to furnish digital parameters or parameters which can be easily digitised.
  • the acceleration parameters it will be also possible to know whether the vehicle is at standstill or in motion, and from the "ground noise" detected by the accelerometers it will be
  • Reference numeral 9 indicates a preferably extractable memory of digital type, inside which are stored and remain secured the data relating to the accident also when it is extracted from the device.
  • This unit can be advantageously provided with a portion 109 inside which there can be stored a reference code relating to each vehicle and which corresponds for example to the license plate of the vehicle onto which the device is mounted, or to other parameters which identify in a strict manner, so as to avoid the fraudulent substitution of the unit 9 of a device involved in an accident with the unit of another device.
  • the portion 109 of said unit transfers inside a small memory 106 of the processor 6 the identifying data of the device.
  • the device will automatically set to correct operation as soon as the ignition key 7 of the vehicle is activated. If instead in the memory there are present different data, the device will not be able to operate without the prior intervention onto suitable reset controls arranged at the interior of the device and which are known only to the installers.
  • the unit 9 When, thereafter, the unit 9 is disconnected from the device, it maintains in a frozen condition the detected parameters, including the hour and the date of extraction and the said memory cannot be again qualified for the recording of new data unless after a phase of decoding and of conditioning of said phase, the whole in such a manner as to avoid the substitution of the blocks 9 between devices mounted on different vehicles.
  • the isle 109 or other part of the memory 9 there can be registered in a useful manner also a digital code which has the scope of identifying the vehicle according to a table which divides the vehicles by noting their characteristic features, such as for example the mass, the piston displacement and if the case also the typical performances of each vehicle, for example concerning the acceleration.
  • This data is read by the processor 6 upon insertion of the memory card 9 in place, is preferably registered in the memory 106 and is compared with a table present in the software 206 of the said processor and the data 30 resulting therefrom can be used for automatically calibrating the sensibility of the dynamic type detection system 3,103 and/or for modifying the parameters of data processing supplied by said system. It appears evident how this solution consents to manufacture equal devices independently from the vehicles onto which the said devices will be mounted. In order to personalise a device it will be sufficient to condition separately the isle 109 of the memory card 9 designed for each device.
  • the device according to Figure 2 can be provided with a timer 10 which delays for a predetermined time the switching off of the processor 6 after a significant impact, for example for a time which can be greater than five seconds if the device is not provided with optoelectronic sensing devices of the type indicated in Figure 1 (see after).
  • a timer 10 which delays for a predetermined time the switching off of the processor 6 after a significant impact, for example for a time which can be greater than five seconds if the device is not provided with optoelectronic sensing devices of the type indicated in Figure 1 (see after).
  • this time interval there is activated the block 11 of the optical and/or acoustical signallers in order to signal to the user that the processor is going to be shut down.
  • the processor 6 is shut down and this condition can be signalled by the signallers 11 which for example operate intermittently.
  • the processor 6 can be automatically reset if after a suitable time interval from the intervention of the blocks 10 and/or 11, a comparator 13 detects, through the data coming from the blocks 2 and 3, a situation of normality, for example that the vehicle has been kept moving and the engine has not been turned off, or other situations of normality, as indicated after.
  • each time that from the blocks 12 or 13 is issued a reset order said order be recorded in a portion 209 of the memory unit 9 which preserves at least the data relating to the hour and day in which the said reset order has been issued, while the other portion of the memory 9 continues the recording of new data.
  • the apparatus is not provided with the timer block 10 and the memory 9 con present an isle 309 which is normally free and exclusively reserved for the registration of the after-event data.
  • the memory 9 blocks the data relating for example to ten seconds prior to the accident, while the date of the post-event are commuted into the memory isle 309 which blocks itself when it has been saturated. Upon completion of the saturation of this portion of the memory, the processor 6 is automatically blocked.
  • Block 14 indicates the origin of an impact which can be significant of an accident.
  • Block 15 relates to the vehicle, with the horizontal outputs which indicate “at standstill” and the vertical output which indicates “in motion”.
  • Block 16 relates to the engine of the vehicle, with the horizontal outputs indicating “switched off' and the vertical output which indicates “running”.
  • Block 17 finally relates to the parameters which can be derived from blocks 2 and 4, with the horizontal outputs indicating "higher than the standard” and with the vertical output which indicates "within the standard”.
  • Block 18 indicates the switch off control of the apparatus and block 19 indicates instead the reset control of the same apparatus.
  • the program contained inside the processor 6 can comprise a comparison table of complex situations which could escape the sensibility of the block sensor 103 but which could be significant of accident. For example: an abrupt deceleration followed by an impact lower than the threshold of intervention of the block sensor 103 and by the stop of the vehicle, would constitute a situation which would be ignored by the described system, but which could instead, thanks to a continuous comparison between the collected data and the said table, be interpreted as a possible situation of accident and could be set for activating the same blocking procedure controlled by the sensor 13, which can be subsequently be or not confirmed during the time interval for the automatic or manual reset.
  • the above said comparison table can be from time to time implemented by the data relating to the vehicle contained in the above mentioned memory isle 109.
  • the apparatus according to Figure 2 can be provided with a single video camera 21 directed towards the interior of the passenger compartment of the vehicle, and intended to be employed as a photocamera, in order to detect the number of the persons occupying the vehicle after each activation of the ignition key 7.
  • the data supplied by this component are of small entity, can be easily compressed and occupy a small memory space, also because they are intended to be periodically cancelled and updated after each start of the vehicle, even with the engine still running, provided that between one start and the successive one there does not take place any significant impact.
  • Reference numeral 22 indicates a microvideocamera with wide angle lens, aimed towards the exterior and forwards, to detect visual data of the possible accident.
  • the apparatus detects a significant impact
  • in the unit of memory 9 there can be stored the events relating to ten seconds before the impact, five seconds after the impact and after these there can be recorded five of more seconds of data coming only from the blocks 2 - 5, since these data occupy a small memory space.
  • means will be provided such that, through the buffer battery 107 of the apparatus, there are recorded at least the data of the after event supplied by the accelerometric sensors and by the gyroscope, which require a minimum quantity of energy.
  • the photographic shot taken through the microvideocameras 21 , 22 is obviously coded and can be visualised only by possessing the software of the device.
  • reference numeral 23 indicates the traffic light to which there is preferably connected an optoinsulated interface 24, provided with photodiodes and with photosensors which are activated jointly with the activation of the different relays 123 of the traffic light, a microprocessor electronic unit 25 in its turn connected to a block 26 of a precision clock for example of the type DCF radio controlled, connected or connectable to a display 27 and connected to a digital type memory 28 capable of containing for example the data of at least twenty four hours of operation of the traffic light.
  • the data detected by memory 28 can be usefully implemented with those of the memory 9 of the device of Figure 2, so as to obtain in the bidimensional of three-dimensional reconstruction of the accident also the progressive modifications of status of the traffic light near to the accident itself.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Traffic Control Systems (AREA)

Abstract

L'invention concerne la prise d'images vidéo réelles effectuée par au moins une caméra vidéo (22), parallèlement à une prise d'images vidéo virtuelles, plus exactes et précises, réalisée au moyen de dispositifs accélérométriques (2) et de préférence au moyen d'au moins un gyroscope électronique (4) qui permettent l'acquisition d'informations cinématiques et d'informations relatives au statut du véhicule et de son moteur, informations très précises et quasiment en temps réel à des fréquences de l'ordre des millisecondes.
PCT/EP2001/014454 2000-12-12 2001-12-10 Dispositif electronique a installer sur des vehicules et/ou des bateaux pour obtenir des informations particulierement utiles en cas d'accident WO2002048969A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01985856A EP1342214A2 (fr) 2000-12-12 2001-12-10 Dispositif electronique a installer sur des vehicules et/ou des bateaux pour obtenir des informations particulierement utiles en cas d'accident

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000BO000721A ITBO20000721A1 (it) 2000-12-12 2000-12-12 Dispositivo elettronico da installare a bordo di veicoli e/o natanti , per rilevare informazioni particolarmente utili in caso di sinistro ,
ITBO2000A000721 2000-12-12

Publications (2)

Publication Number Publication Date
WO2002048969A2 true WO2002048969A2 (fr) 2002-06-20
WO2002048969A3 WO2002048969A3 (fr) 2002-08-15

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PCT/EP2001/014454 WO2002048969A2 (fr) 2000-12-12 2001-12-10 Dispositif electronique a installer sur des vehicules et/ou des bateaux pour obtenir des informations particulierement utiles en cas d'accident

Country Status (3)

Country Link
EP (1) EP1342214A2 (fr)
IT (1) ITBO20000721A1 (fr)
WO (1) WO2002048969A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005093669A1 (fr) * 2004-03-24 2005-10-06 Eas Surveillance Gmbh Enregistreur de donnees evenementielles
WO2008003533A1 (fr) * 2006-07-03 2008-01-10 Continental Automotive Gmbh Procédé de détermination de la position d'arrêt d'un véhicule
EP2201533A1 (fr) * 2007-09-11 2010-06-30 Continental Automotive GmbH Dispositif de traitement de données pour système intégré

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238275A1 (de) * 1992-11-13 1994-05-19 Michael Von Manowski Verfahren und Vorrichtung zur Prävention von Straftaten oder dergleichen
EP0621564A2 (fr) * 1993-04-20 1994-10-26 Awaji Ferryboat Kabushiki Kaisha Enregistreur de données d'accident de la circulation et système de réproduction d'accident de la circulation
WO1998047109A1 (fr) * 1997-04-17 1998-10-22 Stage Iii Technologies, L.C. Dispositif d'enregistrement, de localisation, et de transmission de donnees relatives a l'accident d'un vehicule
DE19827622A1 (de) * 1998-06-20 1999-12-23 Klaus Keck Videorecorder zur Unfallregistrierung
WO2000051083A1 (fr) * 1999-02-26 2000-08-31 Roberto Cavallotti Dispositif electronique a installer a bord de vehicules et/ou d'embarcations pour obtenir des informations, en particulier en cas d'accident

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238275A1 (de) * 1992-11-13 1994-05-19 Michael Von Manowski Verfahren und Vorrichtung zur Prävention von Straftaten oder dergleichen
EP0621564A2 (fr) * 1993-04-20 1994-10-26 Awaji Ferryboat Kabushiki Kaisha Enregistreur de données d'accident de la circulation et système de réproduction d'accident de la circulation
WO1998047109A1 (fr) * 1997-04-17 1998-10-22 Stage Iii Technologies, L.C. Dispositif d'enregistrement, de localisation, et de transmission de donnees relatives a l'accident d'un vehicule
DE19827622A1 (de) * 1998-06-20 1999-12-23 Klaus Keck Videorecorder zur Unfallregistrierung
WO2000051083A1 (fr) * 1999-02-26 2000-08-31 Roberto Cavallotti Dispositif electronique a installer a bord de vehicules et/ou d'embarcations pour obtenir des informations, en particulier en cas d'accident

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005093669A1 (fr) * 2004-03-24 2005-10-06 Eas Surveillance Gmbh Enregistreur de donnees evenementielles
WO2008003533A1 (fr) * 2006-07-03 2008-01-10 Continental Automotive Gmbh Procédé de détermination de la position d'arrêt d'un véhicule
EP2201533A1 (fr) * 2007-09-11 2010-06-30 Continental Automotive GmbH Dispositif de traitement de données pour système intégré

Also Published As

Publication number Publication date
ITBO20000721A0 (it) 2000-12-12
WO2002048969A3 (fr) 2002-08-15
EP1342214A2 (fr) 2003-09-10
ITBO20000721A1 (it) 2002-06-12

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