EP2254099B1 - Präsenzerfassungssystem von Personen im Innenraum eines Fahrzeugs, insbesondere eines Kraftfahrzeugs - Google Patents

Präsenzerfassungssystem von Personen im Innenraum eines Fahrzeugs, insbesondere eines Kraftfahrzeugs Download PDF

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Publication number
EP2254099B1
EP2254099B1 EP10161791A EP10161791A EP2254099B1 EP 2254099 B1 EP2254099 B1 EP 2254099B1 EP 10161791 A EP10161791 A EP 10161791A EP 10161791 A EP10161791 A EP 10161791A EP 2254099 B1 EP2254099 B1 EP 2254099B1
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EP
European Patent Office
Prior art keywords
seat
vehicle
label
reader
passenger compartment
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Not-in-force
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EP10161791A
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English (en)
French (fr)
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EP2254099A1 (de
Inventor
Alain Servel
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PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Publication date
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Publication of EP2254099A1 publication Critical patent/EP2254099A1/de
Application granted granted Critical
Publication of EP2254099B1 publication Critical patent/EP2254099B1/de
Not-in-force legal-status Critical Current
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/22—Status alarms responsive to presence or absence of persons
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0275—Electronic Article Surveillance [EAS] tag technology used for parent or child unit, e.g. same transmission technology, magnetic tag, RF tag, RFID

Definitions

  • the present invention relates to a system for detecting the presence of persons inside a passenger compartment of a vehicle, particularly of automobile type, a detection kit for the installation of such a system, as well as a method of detection of persons by means of such a system.
  • a detection kit for the installation of such a system as well as a method of detection of persons by means of such a system.
  • this detection is implemented in the context of the operation of an anti-theft alarm system, it is usually effected by means of volumetric sensors able to detect any movement inside the passenger compartment by exploiting the effect Doppler.
  • volumetric sensors able to detect any movement inside the passenger compartment by exploiting the effect Doppler.
  • These include ultrasonic sensors or radiofrequency wave sensors, such as 2.4GHz.
  • the document US2006 / 0139159 describes a system for detecting persons inside a passenger compartment of a vehicle which comprises, on the one hand, a radio frequency label reader positioned inside said passenger compartment and, on the other hand, at least one radiofrequency label positioned at a seat of said vehicle.
  • the reader is able to read the label when the seat is occupied and not to be able to read it when the seat is not occupied.
  • a technical problem to be solved by the object of the present invention is to propose a system for detecting people inside a passenger compartment of a vehicle, particularly of the automotive, system, which makes it possible to avoid the problems of the state of the art by notably offering substantially more functionalities, while remaining inexpensive.
  • the proposed solution of the invention to this technical problem has for its first object a system for detecting people inside a passenger compartment of a vehicle, particularly of the automotive type, comprising, on the one hand, a radio frequency label reader operating on the so-called RFID standard, namely 866 MHz or 2.4 GHz, positioned inside said passenger compartment and, on the other hand, at least one radiofrequency label positioned at a so-called contact zone of a seat of said a vehicle which is intended to be covered by the body of a person in the event of occupation of the said seat, so that the said reader is able to read said label when said seat is not occupied by a person, and said reader is not able to read said label, when said seat is occupied by a person.
  • a radio frequency label reader operating on the so-called RFID standard, namely 866 MHz or 2.4 GHz
  • the detection of different tags is performed in frequency bands that are normally allocated to the so-called RFID standard (for Radio Frequency IDentification) but which are well defined, namely 866 MHz or 2.4 GHz. It is known that at such frequencies, the reading of electronic tags is not possible through water, and therefore through a human body. Also, any label that is present but which becomes mute at a given moment will signal a seat occupied, the body of the passenger then forming screen between the reader and the label.
  • the invention as thus defined has the advantage of using one and the same detection technology to ensure three distinct functions, namely the anti-theft alarm, seat occupancy control and even census functions. regulatory or optional moving objects.
  • Radio frequency tag technology is known from the state of the art. It will not be described in detail here. The following points are simply recalled: Radio frequency tags, also known as RFID tags, electronic tags, tags or transponders, are electronic identification elements, which include an electronic chip connected to the terminals of an antenna.
  • a RFID tag reader is an active device, which is mainly composed of a circuit capable of radiofrequency transmission by means of one or more antennas, and electronics capable of receiving and decoding the information returned by the different labels before sending them to an ad hoc treatment system.
  • siege is understood in the broad sense of the term, that is to say, it refers to both an individual seat, a portion of seat reserved for a passenger, or an auxiliary seat taking place on a vehicle seat as is the case with a booster seat or a baby seat for example.
  • each label will preferably be located at a location with a probability of recovery. maximum occupancy of the seat, regardless of the size of the occupant.
  • the identification technology is implemented by means of one or a plurality of passive radiofrequency tags, that is to say supplied with energy by the electromagnetic energy received from the reader, and each equipped with a unique identifier that can be read by a radio-frequency tag reader, to detect the presence of persons inside a passenger compartment of a vehicle and to deduce, where appropriate, the location of those persons in said passenger compartment.
  • the identifier is returned by the label to the reader by ASK or FSK modulation.
  • the figure 1 illustrates a motor vehicle 1 which has, on the one hand, four openings 11, 12, 13, 14 conventionally in the form of swinging side doors and, on the other hand, a passenger compartment equipped with five seats 21, 22, 23, 24, 25.
  • a motor vehicle 1 which has, on the one hand, four openings 11, 12, 13, 14 conventionally in the form of swinging side doors and, on the other hand, a passenger compartment equipped with five seats 21, 22, 23, 24, 25.
  • the motor vehicle 1 is also provided with a detection system 100 for identifying any presence of people inside the cabin.
  • this detection system 100 comprises a radiofrequency label reader 110 which is positioned inside the passenger compartment, as well as a plurality of radiofrequency labels 121, 122, 123, 124, 125 which are positioned at the different seats 21, 22, 23, 24, 25 of the vehicle 1.
  • the assembly is arranged such that each label 121, 122, 123, 124, 125 is positioned at the level of a so-called contact area of the seat 21, 22, 23, 24, 25, which is intended to be covered by the body of a passenger in case of occupation of the seat 21, 22, 23, 24, 25 in question.
  • the reader 110 is positioned at the ceiling of the vehicle 1, that is to say, in height inside the passenger compartment. It is thus placed in an optimal position to communicate with the various labels 121, 122, 123, 124, 125 which are, for their part, distributed at a substantially lower level, and which, in this case, work only in reading . It should also be noted that a radio frequency tag 121, 122, 123, 124, 125 is associated with each seat 21, 22, 23, 24, 25 of the vehicle 1, and that each of them is incorporated in the seat of this vehicle. latest.
  • the system 110 is adapted to operate in the frequency band of the tags 121, 122, 123, 124, 125, that is to say either 866 MHz or 2.4 GHz. But in a particularly advantageous way, it is also able to operate in Doppler mode.
  • the reader 110 is fixedly mounted in the passenger compartment of the vehicle 1, while each label 121, 122, 123, 124, 125 is inserted inside its seat. 21, 22, 23, 24, 25 at a location opposite the corresponding contact area.
  • the detection system 100 constitutes in other words a system of original equipment. This means that all its components are permanently implanted in the cabin, including a reader 110 fixedly mounted, and labels 121, 122, 123, 124, 125 integrated directly inside the seats 21, 22, 23, 24, 25.
  • the detection system 100 will advantageously be provided with interface means 130 with said central computer. 30.
  • the central computer 30 is concretely constituted by an intelligent service housing (BSI).
  • the detection system 100 is further provided with connection means 140 able to electrically connect the reader 110 to a power source 40 belonging to the vehicle 1.
  • the connection means 140 are in the form of a conventional power cable, which provides a substantially direct connection between the reader 110 and the power source 40.
  • this power supply source 40 is here the battery of the vehicle 1.
  • the detection system 100 comprises, for each auxiliary seat 26, two RFID tags 126a, 126b to be secured respectively on either side of said auxiliary seat 26.
  • This feature advantageously makes it possible to use the detection system 100 to perform a census of moving objects inside the passenger compartment of the vehicle 1, but also to determine the precise orientation of each of these objects by exploiting the fact that the two corresponding labels do not have the same proximity to the reader 110.
  • auxiliary seat 26 which is in the form of a baby seat.
  • the latter is positioned back to the road on the seat of the right front seat 22.
  • the two tags 126a, 126b, which function only in reading, are glued on the side flanks respectively left and right of the auxiliary seat 26.
  • the auxiliary seat 26 could very well integrate a radio frequency label equivalent to the labels 121, 122, 123, 124, 125 which are associated with the seats 21, 22, 23, 24, 25.
  • the figure 2 is a diagram illustrating the electronic architecture of the reader 110. It is observed that the antenna is composed of two radiating elements AG and AD which are connected to the output of the transmitter and to the input of the receiver via a radiofrequency circulator C. We also note the presence of two left and right radiofrequency inputs entering a demodulator D to be then amplified A. It is then noted the existence of four inputs of an analog / digital converter which are integrated in a microcontroller ⁇ C host of the reader.
  • This microcontroller ⁇ C is responsible for analyzing the frequency spectrum of each of the incoming channels, measuring the amplitude of the spectrum on each of the channels, and estimating the position of the labels or Doppler sources by a combination of two techniques, one using the principle of single pulse (mono-pulse) amplitude on each component of the spectrum, the other based on a modulation of the power transmitted to limit the scope.
  • the microcontroller still fulfills other functions, such as the analysis of the codes emitted by the labels for the establishment of a cartography before occupying the vehicle, the detection of the missing codes and the analysis of the Doppler, the control of the frequency and the power emitted, the interfacing with the vehicle to know its status, interfacing with the vehicle to transmit to it the mapping of the occupied seats and a possible request for inhibition of air bags, the generation an alarm when a person remains locked in the vehicle.
  • the figure 3 represents a motor vehicle 1 which is provided with a detection system 200 according to a second embodiment of the invention. This is distinguished from the first described above, essentially by the fact that the detection system 200 is a retrofit system, sold in the form of a kit.
  • the detection kit includes a radio frequency tag reader 210 that is removably mounted within the vehicle interior 1, while each tag (not shown here) is secured to its seat 21, 22, 23, 24, 25 at a location located at the corresponding contact area.
  • the removable mounting of the reader 210 can be achieved using any known reversible fixation method, such as clipping.
  • the fastening of each label can take place using any known fastening technique, such as gluing.
  • the reader 210 operates at 2.4 GHz. It is located at the top of the door, while the different labels, which work only in reading, are glued directly to the seat cushion.
  • the vehicle 1 having a multimedia system 50 the detection system 200 is provided with wireless communication means with said multimedia system 50.
  • the communication means in question are Bluetooth type (registered trademark), that is to say that they implement a short-distance radio technology.
  • the detection system 200 also has connection means 240 able to electrically connect the reader 210 to a power supply 40 belonging to the vehicle 1.
  • the detection system 200 being a retrofit system
  • the reader 210 can not take its power supply directly from the electrical source 40.
  • the power supply source 40 is here again constituted by the battery of the vehicle 1.
  • the invention also relates to a detection method by means of a detection system 100, 200 as previously defined, which is suitable for any vehicle 1 having at least one opening 11, 12, 13, 14 giving access to a passenger compartment containing at least one seat 21, 22, 23, 24, 25.
  • the detection method may further comprise a step according to which an alarm is generated when starting the vehicle 1 since at least one seat 21, 22, 23, 24, 25 is occupied without the corresponding safety belt being buckled.
  • this stage of the process can be implemented indifferently after having established the mapping of occupation potential of the seats, or after establishing the mapping of actual occupation of the seats.
  • the latter may be of any type and in particular of sound type, and / or visual, and / or vibratory.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Seats For Vehicles (AREA)
  • Emergency Alarm Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Electric Motors In General (AREA)

Claims (12)

  1. System zum Nachweis (100, 200) von Personen im Innenraum eines Fahrzeugs (1), insbesondere des Typs Kraftfahrzeug, umfassend einerseits ein Hochfrequenz-Etikettenlesegerät (110, 210), das mit dem als RFID bezeichneten Standard funktioniert, d.h. 866 MHz oder 2,4 GHz, das in dem Innenraum angeordnet ist, und andererseits mindestens ein Hochfrequenzetikett (121, 122, 123, 124, 125), das auf der Ebene eines als Kontakt bezeichneten Bereichs eines Sitzes (21, 22, 23, 24, 25) des Fahrzeugs (1) angeordnet ist, der dazu ausgelegt ist, vom Körper einer Person im Fall einer Besetzung des Sitzes bedeckt zu werden, so dass das Lesegerät dazu in der Lage ist, das Etikett zu lesen, wenn der Sitz nicht von einer Person besetzt ist, und das Lesegerät nicht dazu in der Lage ist, das Etikett zu lesen, wenn der Sitz von einer Person besetzt ist.
  2. System zum Nachweis (100, 200) nach Anspruch 1, dadurch gekennzeichnet, dass es eine Vielzahl von Hochfrequenz-Etiketten (121, 122, 123, 124, 125) umfasst, wobei die Etiketten passiv sind und jeweils mit einem einzigartigen Identifikator ausgestattet sind, der vom Hochfrequenz-Etikettenlesegerät (110, 210) gelesen werden kann.
  3. System zum Nachweis (100, 200) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Fahrzeug (1) mindestens einen Hilfssitz (26) umfasst, der auf abnehmbare Weise auf einem Sitz (21, 22, 23, 24, 25) installiert ist, wobei das System zum Nachweis (100, 200) für jeden Hilfssitz (26) zwei Hochfrequenz-Etiketten (126a, 126b) umfasst, die jeweils auf beiden Seiten des Hilfssitzes (26) verbunden werden.
  4. System zum Nachweis (100, 200) nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, dass das Lesegerät (110, 210) außerdem dazu geeignet ist, im Doppler-Modus zu funktionieren.
  5. Kit zum Nachweis (200) von Personen im Innenraum eines Fahrzeugs (1), insbesondere des Typs Kraftfahrzeug, umfassend einerseits ein Hochfrequenz-Etikettenlesegerät (110, 120), das mit dem als RFID bezeichneten Standard funktioniert, d.h. 866 MHz oder 2,4 GHz, das dazu ausgelegt ist, in dem Innenraum angeordnet zu werden, und andererseits mindestens ein Hochfrequenzetikett (121, 122, 123, 124, 125), das dazu ausgelegt ist, auf der Ebene eines als Kontakt bezeichneten Bereichs eines Sitzes (21, 22, 23, 24, 25) des Fahrzeugs (1) angeordnet zu werden, der dazu ausgelegt ist, vom Körper einer Person im Fall einer Besetzung des Sitzes bedeckt zu werden, so dass das Lesegerät dazu in der Lage ist, das Etikett zu lesen, wenn der Sitz nicht von einer Person besetzt ist, und das Lesegerät nicht dazu in der Lage ist, das Etikett zu lesen, wenn der Sitz von einer Person besetzt ist.
  6. Kit zum Nachweis (200) nach Anspruch 5, dadurch gekennzeichnet, dass das Fahrzeug (1) über ein Multimedia-System (50) verfügt, und dadurch, dass das Kit Mittel zur drahtlosen Kommunikation mit dem Multimedia-System (50) umfasst.
  7. Verfahren zum Nachweis von Personen im Innenraum eines Fahrzeugs (1), insbesondere des Typs Kraftfahrzeug, umfassend die folgenden Schritte, nach denen:
    einerseits ein Hochfrequenz-Etikettenlesegerät (110, 120) bereitgestellt wird, das mit dem als RFID bezeichneten Standard funktioniert, d.h. 866 MHz oder 2,4 GHz, das in dem Innenraum angeordnet wird, und andererseits mindestens ein Hochfrequenzetikett (121, 122, 123, 124, 125), das auf der Ebene eines als Kontakt bezeichneten Bereichs eines Sitzes (21, 22, 23, 24, 25) des Fahrzeugs (1) angeordnet wird, das dazu ausgelegt ist, vom Körper einer Person im Fall einer Besetzung des Sitzes bedeckt zu werden, so dass das Lesegerät dazu in der Lage ist, das Etikett zu lesen, wenn der Sitz nicht von einer Person besetzt ist, und das Lesegerät nicht dazu in der Lage ist, das Etikett zu lesen, wenn der Sitz von einer Person besetzt ist: und
    die Anwesenheit des Etiketts mit Hilfe des Lesegeräts gelesen wird.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass das Fahrzeug (1) über mindestens einen Einstieg (11, 12, 13, 14) verfügt, der Zugang zum Innenraum gewährt, der den Sitz (21, 22, 23, 24, 25) einschließt, und dadurch, dass er außerdem die folgenden Schritte umfasst, nach denen:
    die Öffnung mindestens eines Einstiegs (11, 12, 13, 14) nachgewiesen wird;
    das Lesegerät (110, 210) im RFID-Modus aktiviert wird, um jedes Etikett (121, 122, 123, 124, 125) nachzuweisen, das im Innenraum vorhanden ist;
    jedes nachgewiesene Etikett (121, 122, 123, 124, 125) identifiziert und lokalisiert wird, um eine Kartografie der leeren Sitze (21, 22, 23, 24, 25) vor der Besetzung des Fahrzeugs (1) festzusetzen;
    der Verschluss jedes Einstiegs (11, 12, 13, 14) sowie der Verschluss des elektrischen Schaltkreises des Fahrzeugs (1) nachgewiesen wird.
    jedes Etikett (121, 122, 123, 124, 125), das noch nachweisbar ist, identifiziert und lokalisiert wird, um eine Kartografie der leeren Sitze (21, 22, 23, 24, 25) nach der Besetzung des Fahrzeugs (1) festzusetzen;
    die Kartografie der freien Sitze (21, 22, 23, 24, 25) vor der Besetzung mit der Kartografie der freien Sitze (21, 22, 23, 24, 25) nach der Besetzung des Fahrzeugs (1) verglichen wird und die wahrscheinliche Anwesenheit eines Passagiers auf jedem Sitz (21, 22, 23, 24, 25), dessen Etikett (121, 122, 123, 124, 125) stumm bleibt, abgeleitet wird; und
    eine Kartografie der potenziellen Besetzung der Sitze (21, 22, 23, 24, 25) erstellt wird.
  9. Verfahren nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass es außerdem die folgenden Schritte umfasst, nach denen:
    das Lesegerät (110,210) im Doppler-Modus in Richtung jedes Sitzes (21, 22, 23, 24, 25) aktiviert wird, der mit einem stummen Etikett (121, 122, 123, 124, 125) assoziiert ist, um die effektive Anwesenheit einer Person auf dem Sitz (21, 22, 23, 24, 25) nachzuweisen; und
    eine Kartografie der effektiven Besetzung der Sitze (21, 22, 23, 24, 25) erstellt wird.
  10. Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das Fahrzeug (1) mit Airbags ausgestattet ist und mindestens einen Hilfssitz (26) einschließt, der auf abnehmbare Weise auf einem Sitz (21, 22, 23, 24, 25) des Fahrzeugs (1) installiert ist, und dadurch, dass es außerdem die folgenden Schritte umfasst, nach denen:
    jeder Hilfssitz (26) lokalisiert wird;
    die Ausrichtung jedes Hilfssitzes (26) bestimmt wird; und
    die Deaktivierung jedes Airbags angeordnet wird, dessen eventuelle Entfaltung mit der Anwesenheit und der Ausrichtung jedes Hilfssitzes (26) unvereinbar wäre.
  11. Verfahren nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass jeder Sitz (21, 22, 23, 24, 25) des Fahrzeugs (1) mit einem Sicherheitsgurt ausgestattet ist, ebenso wie mit Mitteln zum Nachweis des Anschnallens des Sicherheitsgurts, und dadurch, dass es außerdem den folgenden Schritt umfasst, nach dem:
    beim Start des Fahrzeugs (1) ein Alarm erzeugt wird, sobald mindestens ein Sitz (21, 22, 23, 24, 25) besetzt ist, ohne dass der entsprechende Sicherheitsgurt angeschnallt ist.
  12. Verfahren zur Verwendung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass es außerdem die folgenden Schritte umfasst, nach denen:
    der Verschluss jedes Einstieges (11, 12, 13, 14) sowie die Öffnung des elektrischen Schaltkreises des Fahrzeugs (1) nachgewiesen wird;
    das Lesegerät (110, 210) im Doppler-Modus aktiviert wird, um die eventuelle Anwesenheit einer Person im Innenraum nachzuweisen; und
    ein Alarm ausgelöst wird, wenn mindestens eine Person nachgewiesen wird.
EP10161791A 2009-05-19 2010-05-03 Präsenzerfassungssystem von Personen im Innenraum eines Fahrzeugs, insbesondere eines Kraftfahrzeugs Not-in-force EP2254099B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0953346A FR2945887B1 (fr) 2009-05-19 2009-05-19 Systeme de detection de personnes a l'interieur d'un habitacle d'un vehicule notamment de type automobile

Publications (2)

Publication Number Publication Date
EP2254099A1 EP2254099A1 (de) 2010-11-24
EP2254099B1 true EP2254099B1 (de) 2012-02-08

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EP10161791A Not-in-force EP2254099B1 (de) 2009-05-19 2010-05-03 Präsenzerfassungssystem von Personen im Innenraum eines Fahrzeugs, insbesondere eines Kraftfahrzeugs

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EP (1) EP2254099B1 (de)
AT (1) ATE545121T1 (de)
ES (1) ES2377873T3 (de)
FR (1) FR2945887B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2986478A1 (fr) * 2012-02-03 2013-08-09 Adm Concept Kit de securite pour vehicule automobile destine a etre partage par plusieurs utilisateurs et systeme de gestion d'un fonctionnement d'un vehicule dote d'un tel kit
FR3090520B1 (fr) * 2018-12-19 2020-11-27 Psa Automobiles Sa Système de détection de présence d’une personne occupant un siège arrière d’un véhicule

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090046538A1 (en) * 1995-06-07 2009-02-19 Automotive Technologies International, Inc. Apparatus and method for Determining Presence of Objects in a Vehicle
US5790031A (en) * 1997-01-13 1998-08-04 Trw Inc. Apparatus and method for sensing a rearward facing child seat with error detection
US7321306B2 (en) * 2004-12-10 2008-01-22 International Business Machines Corporation Wireless system to detect presence of child in a baby car seat
US20070096891A1 (en) * 2005-10-17 2007-05-03 Sheriff Michael L RFID buckle closure and presence sensor system for safety childseat

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ATE545121T1 (de) 2012-02-15
ES2377873T3 (es) 2012-04-02
EP2254099A1 (de) 2010-11-24
FR2945887A1 (fr) 2010-11-26
FR2945887B1 (fr) 2011-05-20

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