(19)
(11)EP 1 755 917 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
07.08.2019 Bulletin 2019/32

(21)Application number: 05757766.0

(22)Date of filing:  06.06.2005
(51)International Patent Classification (IPC): 
B60N 2/28(2006.01)
B60N 2/02(2006.01)
B60N 2/00(2006.01)
(86)International application number:
PCT/US2005/019872
(87)International publication number:
WO 2005/120888 (22.12.2005 Gazette  2005/51)

(54)

CHILD RESTRAINT SYSTEM AND METHOD FOR MONITORING INSTALLATION OF THE CHILD RESTRAINT SYSTEM

KINDERGURTSYSTEM UND VERFAHREN ZUR ÜBERWACHUNG DER INSTALLIERUNG DES KINDERGURTSYSTEMS

SYSTEME DE RETENUE POUR ENFANT ET PROCEDE DE CONTROLE D'INSTALLATION DUDIT SYSTEME


(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

(30)Priority: 07.06.2004 US 577546 P
08.09.2004 US 607988 P

(43)Date of publication of application:
28.02.2007 Bulletin 2007/09

(73)Proprietor: Aptiv Technologies Limited
St. Michael (BB)

(72)Inventors:
  • PATTERSON, James, F.
    Greentown, IN 46936 (US)
  • STUART, Sullivan, S.
    Peru, IN 46970 (US)
  • RODNEY, Lawrence, A.
    Rossville, IN 46065 (US)
  • FORTUNE, Duane, D.
    Lebanon, IN 46052 (US)
  • WALLNER, Edward, J.
    Westfield, IN 46074 (US)
  • PORTER, Stephen, B.
    Noblesville, IN 46062 (US)
  • FULTZ, William, W.
    Carmel, IN 46033 (US)
  • KINCAID, Kevin, D.
    Kokomo, IN 46902 (US)

(74)Representative: Manitz Finsterwald Patent- und Rechtsanwaltspartnerschaft mbB 
Postfach 31 02 20
80102 München
80102 München (DE)


(56)References cited: : 
EP-A2- 0 949 113
US-B1- 6 463 372
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] This application relates to a child restraint system and a method for monitoring installation of the child restraint system.

    BACKGROUND



    [0002] Child restraint systems have been utilized to hold infants or children therein within vehicles. One type of child restraint system includes a child seat and a base portion for holding the seat, that are rearward-facing with respect to a vehicle seat. A second type of child restraint system utilizes a rearward-facing child seat without the base portion. A third type of child restraint system is a booster child seat that is frontward-facing with respect to the vehicle seat.

    [0003] During installation of any of the foregoing types of child restraint systems in a vehicle, an orientation of the child seat relative to a vertical axis should be maintained within a predetermined angular range from the vertical axis, to minimize and/or prevent neck injuries to children.

    [0004] Document EP0949113A2 relates to a child seat which can be set at a desired angle regardless of the angles of a vehicle seat. Document US6463372B1 relates to a system for minimizing injury to the occupant suffered in a vehicle collision.

    [0005] Accordingly, the inventors herein have recognized a need for a child restraint system that can indicate whether a child seat has been installed at a proper positional angle on the vehicle seat.

    SUMMARY



    [0006] A child restraint system according to appended claim 1.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0007] 

    Figure 1 is a diagram of a child restraint system in accordance with an exemplary embodiment;

    Figure 2 is a cross-sectional diagram of the child seat in the child restraint system of Figure 1;

    Figure 3 is a cross-sectional diagram of the child seat of Figure 2 taken along lines 3-3.

    Figure 4 is an electrical schematic of a child seat position monitoring system utilized in the child restraint system of Figure 1;

    Figure 5 is a schematic of a child seat that is positioned within a predetermined angular range Δθ;

    Figure 6 is a schematic of a child seat that is positioned outside of the predetermined angular range Δθ;

    Figure 7 is a plot of an output signal indicating output voltage versus angular position of an accelerometer sensor utilized in the child seat position monitoring system of Figure 4;

    Figures 8-11 are flowcharts of a method for training a child seat position monitoring system of Figure 4; and

    Figure 12 is a diagram of a child restraint system in accordance with another exemplary embodiment.


    DESCRIPTION OF EXEMPLARY EMBODIMENTS



    [0008] Referring to Figures 1 and 4, a child restraint system 10 that can be secured to a vehicle seat 12 in accordance with exemplary embodiment is provided. In particular, the child restraint system 10 is secured to the vehicle seat 12 utilizing the seat belt webbing 14. The child restraint system 10 includes a child seat 20, a base portion 22, and a child seat position monitoring system 24.

    [0009] Referring to Figures 1 and 2, the child seat 20 comprises a rearward facing child seat that is configured to accommodate a child therein for transporting the child both inside and outside of a vehicle. The child seat 20 is configured to be fixedly secured to the base portion 22 and the base portion 22 is further secured via the seat belt webbing 14 to the seat 12 or to a frame of a vehicle. The child seat 20 includes a shell 30, a handle 49, and a cushion 50.

    [0010] The shell 30 defines a compartment for accommodating the child therein. The shell 30 includes a back portion 33, a seat portion 34. The back portion 33 supports a back of the child and the seat portion 34 supports the buttocks and legs of the child. The back portion 33 and the seat portion 34 comprise a plastic layer 36, an adhesive layer 38, a polymeric foam layer 40, and a flexible bladder 42. The plastic layer 36 is constructed from a rigid polymeric material. The polymeric foam layer 40 is attached to the plastic layer 36 via the adhesive layer 38. Further, the flexible bladder 42 is disposed adjacent the polymeric foam layer 40. The flexible bladder 42 is constructed from a flexible polymeric material and holds a fluid 41 therein. A pressure sensor 61 is fluidly coupled to the fluid 41 within the flexible bladder 42. When a child is disposed in the child seat 20, a pressure of the fluid 41 within the flexible bladder 42 is indicative of a weight of the child. Accordingly, a signal generated by the pressure sensor 61 is directly indicative of a pressure of the fluid 41 and indirectly indicative of the weight of the child. The pressure signal (P) from the pressure sensor 61 is utilized by a controller for selecting a predetermined angular range Δθ for desired positioning of the child seat 20, which will be described in greater detail below.

    [0011] The handle 49 is coupled to shell 30 and is provided to allow a user to easily lift the child seat 20. The handle 49 is constructed from a rigid polymeric material. Further, the seat cushion 50 is configured to the disposed over the flexible bladder 42.

    [0012] Referring to Figure 1, the base portion 22 is provided to receive the child seat 20 therein. The base portion 22 has a shell 54 constructed from a rigid polymeric material. The shell 50 includes an aperture 56 extending therethrough for receiving the seat belt webbing 14 therethrough.

    [0013] Referring to Figure 4, the child seat position monitoring system 24 is provided to monitor an angular position of the child seat 20 and to provide an indication to a user as to whether an angular position of the child seat 20 is within a predetermined angular range Δθ from an axis. The child seat position monitoring system 24 includes a controller 60, a pressure sensor 61, an accelerometer sensor 62, switches 70, 72, light emitting diodes (LEDs) 74, 76, resistors 78, 80, 82, a transistor 84, an annunciator 86, and a liquid crystal display (LCD) 88.

    [0014] The controller 60 is provided to monitor an output signal (P) from the pressure sensor 61 to determine a weight of the child occupant in the child seat 20. The controller 60 is further provided to monitor an output signal from the accelerometer sensor 62 to determine an angular position of the child seat 20 relative to an axis. The controller 60 is further provided to control operation of indicator devices including the LEDs 74, 76, the annunciator 86, or the LCD 88, as will be described in greater detail below. The controller 60 includes a central processing unit (CPU) 100, a read-only memory (ROM) 102, a volatile memory such as a random access memory (RAM) 104 and an input/output (I/O) interface 106. The CPU 100 operably communicates with the ROM 102, the RAM 104, and the I/O interface 106. The computer readable media including ROM 102 and RAM 104 may be implemented using any of a number of known memory devices such as PROMs, EPROMs, EEPROMS, flash memory or any other electric, magnetic, optical or combination memory device capable of storing data, some of which represent executable instructions used by the CPU 100.

    [0015] The accelerometer sensor 62 is provided to measure an angular position of the child seat 20 with respect to a predetermined axis. Referring to Figure 5, in one embodiment, the accelerometer sensor 62 comprises a z-axis accelerometer that generates an output signal indicative of an angular displacement of the child seat 20 relative to an axis 110. Referring to Figure 12, in an alternate embodiment, the accelerometer sensor 62 comprises an x-axis accelerometer that generates an output signal indicative of an angular displacement of the child seat relative to a horizontal axis 180. Referring to Figure 7, a curve 120 indicates operational characteristics of the accelerometer 62. In particular, the curve 120 indicates that as an angular position of the child seat 20 is moved from 0 degrees (e.g., vertical axis 110 represents 0 degrees) to 180 degrees, the output signal is adjusted from 5 Vdc to 0 Vdc.

    [0016] It should be noted that in other alternate embodiments, the accelerometer sensor 62 can be replaced with any known sensor that is capable of determining an angular orientation of the seat 20. For example, sensor 62 can be replaced with an inclination sensor or electromechanical sensors or the like that have been utilized in tilt switches and seat belt latching retractors.

    [0017] In another alternate embodiment, one or more of the sensors in the child seat 20 are operably coupled to one or more radio frequency (RF) transmitters that transmit RF signals having information indicative of the measured parameters, and the child seat monitoring system 24 includes an RF receiver operably coupled to the controller 60 configured to receive the RF signals, to allow wireless communication therebetween.

    [0018] Referring again to Figure 4, the remainder of the child seat position monitoring system 24 will now be explained. Both the pressure sensor 61 and the accelerometer sensor 62 are electrically coupled to the I/O interface 106. The switch 70 is electrically coupled between the I/O interface 106 and an electrical ground. When the switch 70 is in a closed operational position, the CPU 100 enters a "training mode" for determining a vertical/reference axis 110 of the child seat 20 based on the output signal (A) from the accelerometer sensor 62. Alternately, when the switch 70 is in an open operational position, the CPU exits the "training mode." The switch 72 is electrically coupled between the I/O interface 106 and the electrical ground. When the switch 72 is in a closed operational position, the CPU 100 enters a "monitoring mode" for determining whether an angular position of the child seat 20 is within a predetermined angular range Δθ from the vertical/reference axis 110. Alternately, when the switch 72 is in an open operational position, the CPU 100 exits the "monitoring mode."

    [0019] The LED 74 is provided to emit light having a first color to indicate when a measured angular position of the child seat 20 is within a predetermined angular range Δθ from the vertical axis 110. The LED 74 and a resistor 78 are electrically coupled in series between the I/O interface 106 and a node 93. The node 93 is electrically coupled to a drain (D) of a transistor 84. The gate (G) of the transistor 84 is electrically coupled to the I/O interface 106. Further, a resistor 82 is electrically coupled between the gate (G) and electrical ground. When the I/O interface 106 outputs a positive voltage to both the LED 74 and the gate (G) of the transistor 84, the LED 74 emits light having the first color. Alternately, when the I/O interface 106 does not output a positive voltage to both the LED 74 and the gate (G) of the transistor 84, the LED 74 does not emit light.

    [0020] The LED 76 is provided to emit light having a second color to indicate when a measured angular position of the child seat 20 is outside of the predetermined angular range Δθ from the vertical axis 110. The LED 76 and a resistor 80 are electrically coupled in series between the I/O interface 106 and the node 93. The node 93 is electrically coupled to a drain (D) of a transistor 84. When the I/O interface 106 outputs a positive voltage to both the LED 76 and the gate (G) of the transistor 84, the LED 76 emits light having the second color. Alternately, when the I/O interface 106 does not output a positive voltage to both the LED 76 and the gate (G) of the transistor 84, the LED 76 does not emit light.

    [0021] The electrical annunciator 86 is provided to emit a first audible sound when a measured angular position of the child seat 20 is within a predetermined angular range Δθ from the vertical axis 110, in response to a control signal from the controller 60. The electrical annunciator 86 is further provided to emit a second audible sound when the measured angular position of the child seat 20 is outside of a predetermined angular range Δθ from the vertical axis 110, in response to another control signal from the controller 60. The annunciator 86 is electrically coupled to the I/O interface 106.

    [0022] The LCD 88 is provided to display a first message when a measured angular position of the child seat 20 is within a predetermined angular range Δθ from the vertical axis 110, in response to a control signal from the controller 60. The LCD 88 is further provided to display a second message when a measured angular position of the child seat 20 is outside of a predetermined angular range Δθ from the vertical axis 110, in response to a control signal from the controller 60. The LCD 88 is electrically coupled to the I/O interface 106.

    [0023] Referring to Figure 8, a method for training the controller 60 with a predetermined vertical/reference axis 110 is illustrated. The method can be implemented utilizing software algorithms executed by the controller 60 of the child seat position monitoring system 24.

    [0024] At step 130, a user positions a child seat 20 on a vehicle seat.

    [0025] At step 132, the user closes the switch 70 to induce the controller 60 to enter a "training mode."

    [0026] At step 134, the controller 60 samples a first signal output from the accelerometer sensor 60 disposed on the child seat 20. The first signal is indicative of a positional angle of the child seat 20. Further, the controller 60 determines a value indicative of an axis 110 based on the first signal.

    [0027] At step 136, the controller 60 stores the value indicative of the axis 100 in a memory and exits "training mode. " After step 136, the method is exited.

    [0028] Referring to Figures 9-11, a method for monitoring installation of the child restraint system 10 is illustrated. The method can be implemented utilizing software algorithms executed by the controller 60 of the child seat position monitoring system 24.

    [0029] At step 138, a user closes a switch 72 to induce the controller 60 to enter a "monitoring mode."

    [0030] At step 140, the controller 60 samples a second signal output from a pressure sensor 61 indicative of a weight of a child occupant in the child seat 20, and calculates a weight value based on the second signal.

    [0031] At step 142, the controller 60 calculates a predetermined angular range Δθ based on the weight value.

    [0032] At step 144, the controller 60 samples a third signal from the accelerometer sensor 62 disposed on the child seat 20. The third signal is indicative of positional angle of the child seat 20. Further, the controller 60 calculates a first angle value based on the third signal

    [0033] At step 146, the controller 60 makes a determination as to whether the first angle value is within a predetermined angular range Δθ from the axis 110. If the value of step 146 equals "yes" the method advances to step 148. Otherwise, the method advances step 160.

    [0034] At step 148, the controller 60 makes a determination as to whether the child seat 20 has LEDs 74, 76. If the value of step 148 equals "yes", the method advances to step 150. Otherwise, the method advances to step 152.

    [0035] At step 150, the controller 60 induces the LED 74 to emit light having a first color indicating that the first angle value is not within the predetermined angular range Δθ. After step 150, the method advances to step 152.

    [0036] At step 152, the controller 60 makes a determination as to whether the child seat 20 has an electrical annunciator 86. If the value of step 152 equals "yes", the method advances to step 154. Otherwise, the method advances to step 156.

    [0037] At step 154, the controller 60 induces the annunciator 86 to emit a first audible sound indicating that the first angle value is not within the predetermined angular range Δθ. After step 154, the method advances to step 156.

    [0038] At step 156, the controller 60 makes a determination as to whether the child seat 20 has the LCD 88. If the value of step 156 equals "yes", the method advances to step 158. Otherwise, the method advances to step 138.

    [0039] At step 158, the controller 60 induces the LCD 88 to display a first message indicating that the first angle value is not within the predetermined angular range Δθ. For example, referring to Figure 6, the first angle value Ø is not within the predetermined angular range Δθ. Referring to Figure 9, After step 158, the method advances to step 138.

    [0040] Referring again to step 146, when the value of step 146 equals "no", the method advances to step 160.

    [0041] At step 160, the controller 60 makes a determination as to whether the child seat 20 has the LEDs 74, 76. If the value of step 160 equals "yes", the method advances to step 162. Otherwise, the method advances to step 164.

    [0042] At step 162, the controller 60 induces the LED 76 to emit light having a second color indicating that the first angle value is within the predetermined angular range Δθ. After step 162, the method advances to step 164.

    [0043] At step 164, the controller 60 makes a determination as to whether the child seat 20 has the electrical annunciator 86. If the value of step 164 equals "yes", the method advances to step 166. Otherwise, the method advances to step 168.

    [0044] At step 166, the controller 60 induces the annunciator 86 to emit a second audible sound indicating that the first angle value is within the predetermined angular range Δθ. After step 166, the method advances to step 168.

    [0045] At step 168, the controller 60 makes a determination as to whether the child seat 20 has the LCD 88. If the value of step 168 equals "yes", the method advances to step 170. Otherwise, the method advances to step 138.

    [0046] At step 170, the controller 60 induces the LCD 88 to display a second message indicating that the first angle value is within the predetermined angular range Δθ. After step 170, the method advances to step 138.

    [0047] The child restraint system and a method for monitoring installation of the child restraint system provide a substantial advantage over other systems and methods. In particular, the child restraint system utilizes a controller to monitor an angular position of the child seat and to provide an indication to a user as to whether an angular position of the child seat is within a predetermined angular range from an axis.

    [0048] As described above, the method for monitoring installation of the child restraint system can be embodied in the form of computer-implemented processes and apparatuses for practicing those processes. In an exemplary embodiment, the method is embodied in computer program code executed by one or more elements. The present method may be embodied in the form of computer program code containing instructions embodied in tangible media, such as floppy diskettes, CD-ROMs, hard drives, flash memory, or any other computer-readable storage medium, wherein, when the computer program code is loaded into and executed by a computer, the computer becomes an apparatus for practicing the invention. The present method can also be embodied in the form of computer program code, for example, whether stored in a storage medium, loaded into and/or executed by a computer.


    Claims

    1. A child restraint system (10) adapted to be mounted within a vehicle, the child restraint system (10) comprising:

    a child seat (20) configured to receive a child occupant;

    a first sensor (62) coupled to the child seat (20), the first sensor (62) configured to output a first signal indicative of positional angle of the child seat (20) relative to a first axis (110); and

    a controller (60) coupled to the child seat (20) configured to receive the first signal and to calculate a first angle value based on the first signal, the controller (60) further configured to induce a first device disposed on the child seat (20) to indicate when the first angle value is not within a predetermined angular range (Δθ) from the first axis (110) wherein the child restraint system further comprises

    a second sensor (61) configured to output a second signal indicative of the weight of child occupant, the controller (60) further configured to receive the second signal and to calculate the predetermined angular range (Δθ) value based on the second signal, wherein the second sensor (61) comprises a pressure sensor disposed on the child seat (20).


     
    2. The child restraint system (10) of claim 1, wherein the first sensor (62) comprises a z-axis accelerometer sensor configured to adjust an amplitude of the first signal based on an angular position of the child seat (20).
     
    3. The child restraint system (10) of claim 1, wherein the first sensor (62) comprises an x-axis accelerometer sensor configured to adjust an amplitude of the first signal based on an angular position of the child seat (20).
     
    4. The child restraint system (10) of claim 1, wherein the first device comprises a light-emitting diode (74), the controller (60) configured to induce the light-emitting diode (74) to emit light having a first color when the first angle value is not within the predetermined angular range (Δθ).
     
    5. The child restraint system (10) of claim 1, wherein the first device comprises an electrical annunciator (86), the controller (60) configured to induce the electrical annunciator (86) to emit a first audible sound when the first angle value is not within the predetermined angular range (Δθ), the controller (60) further configured to induce the electrical annunciator (86) to emit a second audible sound when the first angle value is within the predetermined angular range (Δθ).
     
    6. The child restraint system (10) of claim 1, wherein the first device comprises a liquid-crystal display (88), the controller (60) configured to induce the liquid-crystal display (88) to display a first message when the first angle value is not within the predetermined angular range (Δθ), the controller (60) further configured to induce the liquid-crystal display (88) to display a second message when the first angle value is within the predetermined angular range (Δθ).
     
    7. The child restraint system (10) of claim 1, wherein the controller (60) is further configured to induce a second device to indicate when the first angle value is within the predetermined angular range (Δθ).
     
    8. The child restraint system (10) of claim 7, wherein the second device comprises a light-emitting diode (76), the controller (60) further configured to induce the light-emitting diode (76) to emit light having a first color when the first angle value is within the predetermined angular range (Δθ).
     
    9. The child restraint system (10) of claim 1, wherein the child seat (20) comprises a rearward-facing child seat with respect to the vehicle seat (12).
     
    10. The child restraint system (10) of claim 1, wherein the child seat (20) comprises a frontward-facing child seat with respect to the vehicle seat (12).
     


    Ansprüche

    1. Kinderrückhaltesystem (10), das zur Montage in einem Fahrzeug angepasst ist, wobei das Kinderrückhaltesystem (10) umfasst:

    einen Kindersitz (20), der derart konfiguriert ist, einen kindlichen Insassen aufzunehmen;

    einen ersten Sensor (62), der mit dem Kindersitz (20) gekoppelt ist, wobei der erste Sensor (62) derart konfiguriert ist, ein erstes Signal auszugeben, das einen Positionswinkel des Kindersitzes (20) relativ zu einer ersten Achse (110) angibt; und

    einen Controller (60), der mit dem Kindersitz (20) gekoppelt und derart konfiguriert ist, das erste Signal aufzunehmen und einen ersten Winkelwert basierend auf dem ersten Signal zu berechnen, wobei der Controller (60) ferner derart konfiguriert ist, eine erste Vorrichtung, die an dem Kindersitz (20) angeordnet ist, zu veranlassen, anzugeben, wann der erste Winkelwert nicht innerhalb eines vorbestimmten Winkelbereiches (Δθ) von der ersten Achse (110) liegt, wobei das Kinderrückhaltesystem ferner umfasst:
    einen zweiten Sensor (61), der derart konfiguriert ist, ein zweites Signal auszugeben, das das Gewicht des kindlichen Insassen angibt, wobei der Controller (60) ferner derart konfiguriert ist, das zweite Signal zu empfangen und den Wert des vorbestimmten Winkelbereiches (Δθ) basierend auf dem zweiten Signal zu berechnen, wobei der zweite Sensor (61) einen Drucksensor umfasst, der an dem Kindersitz (20) angeordnet ist.


     
    2. Kinderrückhaltesystem (10) nach Anspruch 1, wobei der erste Sensor (62) einen Sensor des z-Achsen-Beschleunigungsmessers umfasst, der derart konfiguriert ist, eine Amplitude des ersten Signals basierend auf einer Winkelposition des Kindersitzes (20) einzustellen.
     
    3. Kinderrückhaltesystem (10) nach Anspruch 1, wobei der erste Sensor (62) einen Sensor des x-Achsen-Beschleunigungsmessers umfasst, der derart konfiguriert ist, eine Amplitude des ersten Signals basierend auf einer Winkelposition des Kindersitzes (20) einzustellen.
     
    4. Kinderrückhaltesystem (10) nach Anspruch 1, wobei die erste Vorrichtung eine lichtemittierende Diode (74) umfasst und der Controller (60) konfiguriert ist, zu veranlassen, dass die lichtemittierende Diode (74) Licht mit einer ersten Farbe aussendet, wenn der erste Winkelwert nicht innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt.
     
    5. Kinderrückhaltesystem (10) nach Anspruch 1, wobei die erste Vorrichtung eine elektrische Meldeeinrichtung (86) umfasst, wobei der Controller (60) derart konfiguriert ist, zu veranlassen, dass die elektrische Meldeeinrichtung (86) ein erstes hörbares Geräusch aussendet, wenn der erste Winkelwert nicht innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt, wobei der Controller (60) ferner derart konfiguriert ist, zu veranlassen, dass die elektrische Meldeeinrichtung (86) ein zweites hörbares Geräusch ausgibt, wenn der erste Winkelwert innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt.
     
    6. Kinderrückhaltesystem (10) nach Anspruch 1, wobei die erste Vorrichtung eine Flüssigkristallanzeige (88) umfasst, und der Controller (60) derart konfiguriert ist, um zu veranlassen, dass die Flüssigkristallanzeige (88) eine erste Nachricht anzeigt, wenn der erste Winkelwert nicht innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt, und der Controller (60) weiter derart konfiguriert ist, zu veranlassen, dass die Flüssigkristallanzeige (88) eine zweite Nachricht anzeigt, wenn der erste Winkelwert innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt.
     
    7. Kinderrückhaltesystem (10) nach Anspruch 1, wobei der Controller (60) ferner derart konfiguriert ist, zu veranlassen, dass eine zweite Vorrichtung angibt, wenn der erste Winkelwert innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt.
     
    8. Kinderrückhaltesystem (10) nach Anspruch 7, wobei die zweite Vorrichtung eine lichtemittierende Diode (76) umfasst, und wobei der Controller (60) ferner konfiguriert ist, zu veranlassen, dass die lichtemittierende Diode (76) Licht mit einer ersten Farbe aussendet, wenn der erste Winkelwert innerhalb des vorbestimmten Winkelbereiches (Δθ) liegt.
     
    9. Kinderrückhaltesystem (10) nach Anspruch 1, wobei der Kindersitz (20) einen nach rückwärts weisenden Kindersitz in Bezug auf den Fahrzeugsitz (12) umfasst.
     
    10. Kinderrückhaltesystem (10) nach Anspruch 1, wobei der Kindersitz (20) einen nach vorn weisenden Kindersitz in Bezug auf den Fahrzeugsitz (12) umfasst.
     


    Revendications

    1. Système de retenue pour enfant (10) adapté pour être monté dans un véhicule, le système de retenue pour enfant (10) comprenant :

    un siège pour enfant (20) configuré pour recevoir un occupant enfant ;

    un premier capteur (62) couplé au siège pour enfant (20), le premier capteur (62) étant configuré pour délivrer un premier signal indicatif d'un angle de position du siège pour enfants (20) par rapport à un premier axe (110) ; et

    un contrôleur (60) couplé au siège pour enfant (20), configuré pour recevoir le premier signal et pour calculer une première valeur angulaire sur la base du premier signal, le contrôleur (60) étant en outre configuré pour amener un premier dispositif est disposé sur le siège pour enfant (20) à indiquer lorsque la première valeur angulaire ne tombe pas dans une plage angulaire prédéterminée (ΔΘ) depuis le premier axe (110),

    dans lequel le système de retenue pour enfant comprend en outre

    un second capteur (61) configuré pour délivrer un second signal indicatif du poids de l'occupant enfant, le contrôleur (60) étant en outre configuré pour recevoir le second signal et pour calculer la valeur de plage angulaire prédéterminée (ΔΘ) sur la base du second signal, dans lequel le second capteur (61) comprend un capteur de pression disposé sur le siège pour enfant (20).


     
    2. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le premier capteur (62) comprend un capteur accéléromètre d'axe z configuré pour ajuster une amplitude du premier signal sur la base d'une position angulaire du siège pour enfant (20).
     
    3. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le premier capteur (62) comprend un capteur accéléromètre d'axe x configuré pour ajuster une amplitude du premier signal sur la base d'une position angulaire du siège pour enfant (20).
     
    4. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le premier dispositif comprend une diode électroluminescente (74), le contrôleur (60) étant configuré pour amener la diode électroluminescente (74) à émettre une lumière ayant une première couleur quand la première valeur angulaire ne tombe pas dans la plage angulaire prédéterminée (ΔΘ).
     
    5. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le premier dispositif comprend un avertisseur électrique (86), le contrôleur (60) étant configuré pour amener l'avertisseur électrique (86) à émettre un premier sont audible quand la première valeur angulaire ne tombe pas dans la plage angulaire prédéterminée (ΔΘ), le contrôleur (60) étant en outre configuré pour amener l'avertisseur électrique (86) à émettre un second signal audible quand la première valeur angulaire tombe dans la plage angulaire prédéterminée (ΔΘ).
     
    6. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le premier dispositif comprend un affichage à cristaux liquides (88), le contrôleur (60) étant configuré pour amener l'affichage à cristaux liquides (88) à afficher un premier message quand la première valeur angulaire ne tombe pas dans la plage angulaire prédéterminée (ΔΘ), le contrôleur (60) étant en outre configuré pour amener l'affichage à cristaux liquides (88) à afficher un second message quand la première valeur angulaire tombe dans la plage angulaire prédéterminée (ΔΘ).
     
    7. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le contrôleur (60) est en outre configuré pour amener un second dispositif à indiquer quand la première valeur angulaire tombe dans la plage angulaire prédéterminée (ΔΘ).
     
    8. Système de retenue pour enfant (10) selon la revendication 7, dans lequel le second dispositif comprend une diode électroluminescente (76), le contrôleur (60) étant en outre configuré pour amener la diode électroluminescente (76) à émettre une lumière ayant une première couleur quand la première valeur angulaire tombe dans la plage angulaire prédéterminée (ΔΘ).
     
    9. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le siège pour enfant (20) comprend un siège pour enfant tourné vers l'arrière par rapport au siège de véhicule (12).
     
    10. Système de retenue pour enfant (10) selon la revendication 1, dans lequel le siège pour enfant (20) comprend un siège pour enfant tourné vers l'avant par rapport au siège de véhicule (12).
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description