Obstacle detection device, in particular a frame for a motorised opening panel of a motor vehicle, and resulting opening panel
First Claim
1. A device for detecting an obstacle in relation to a movement-controlled panel and/or for controlling the movement of the panel in relation to the obstacle, characterized in that it comprises:
- deformable tubular means or a flexible tube for the propagation of dynamic pressure waves of low frequency, less than 500 Hz, these deformable tubular means or flexible tube also being able to create and propagate a dynamic pressure pulsed wave of very low frequency, less than 100 Hz, emitted in response to the docking impact of the moving panel on the obstacle,means for emitting and receiving said low-frequency dynamic pressure waves, and receiving said very low frequency dynamic pressure pulsed wave, these emitting and receiving means being adapted notably in dynamic pressure impedance to said deformable tubular means or flexible tube,means of processing said dynamic pressure waves and dynamic pressure pulsed wave adapted to;
check firstly the correct operation of the detection of an obstacle and of the movement control by the device,determining the detection of the obstacle by the moving panel, docking impact or deformation of said deformable tubular means or flexible tube, andenabling, according to this detection, a suitable control of the movement of the panel in relation to the obstacle, the panel being stopped, lowered or re-opened,these processing means being able to detect, according to a secure procedure, firstly the docking impact of the panel on the obstacle, thus avoiding and anticipating the deformation of said deformable tubular means or flexible tube, then the deformation of the deformable tubular means or flexible tube, at least partially, if the docking impact is not detected.
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Accused Products
Abstract
The invention relates to a device for the detection of an obstacle (43) in relation to a controlled-movement panel (3), including: deformable tubular means or a flexible tube (31) for the propagation of low-frequency dynamic pressure waves; means for transmitting (40a) and receiving (40b) the low-frequency dynamic pressure waves; and means for processing (9) said dynamic pressure waves, which, upon detection of an obstacle, are designed to allow the panel (3) to be moved in relation to the obstacle (43), the panel being stopped, lowered or re-opened.
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Citations
20 Claims
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1. A device for detecting an obstacle in relation to a movement-controlled panel and/or for controlling the movement of the panel in relation to the obstacle, characterized in that it comprises:
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deformable tubular means or a flexible tube for the propagation of dynamic pressure waves of low frequency, less than 500 Hz, these deformable tubular means or flexible tube also being able to create and propagate a dynamic pressure pulsed wave of very low frequency, less than 100 Hz, emitted in response to the docking impact of the moving panel on the obstacle, means for emitting and receiving said low-frequency dynamic pressure waves, and receiving said very low frequency dynamic pressure pulsed wave, these emitting and receiving means being adapted notably in dynamic pressure impedance to said deformable tubular means or flexible tube, means of processing said dynamic pressure waves and dynamic pressure pulsed wave adapted to; check firstly the correct operation of the detection of an obstacle and of the movement control by the device, determining the detection of the obstacle by the moving panel, docking impact or deformation of said deformable tubular means or flexible tube, and enabling, according to this detection, a suitable control of the movement of the panel in relation to the obstacle, the panel being stopped, lowered or re-opened, these processing means being able to detect, according to a secure procedure, firstly the docking impact of the panel on the obstacle, thus avoiding and anticipating the deformation of said deformable tubular means or flexible tube, then the deformation of the deformable tubular means or flexible tube, at least partially, if the docking impact is not detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A chassis for motorized opening panel comprising a device for detecting an obstacle, notably for a motor vehicle, comprising a chassis frame and a mobile panel driven in relation to said chassis frame by a motor means, for example closing or opening the chassis frame, and comprising a closure safety device able to stop, retract or open the mobile panel immediately upon detection of an obstacle between the chassis frame and the mobile panel in the driving of the mobile panel, in which the closure safety device comprises:
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deformable tubular means in flexible tube form arranged at least along an area to be secured in relation to a possible obstacle between the chassis frame and the mobile panel, for example along at least a portion of the peripheral edge of the mobile panel or the peripheral edge of the frame of said chassis, and forming a projection toward said area to be secured, a means of emitting dynamic pressure waves arranged at one end of said flexible tube and able to emit a dynamic pressure wave signal running along said flexible tube, a means of receiving dynamic pressure waves and said dynamic pressure pulsed wave, linked to said flexible tube at another end of the latter and able to detect at least a pressure variation of said wave signal and pulsed wave, of dynamic pressure transmitted from the emitting means and generated by an obstacle docking on or deforming said flexible tube respectively, and, a device for regulating and controlling the motor means linked to said emitting and receiving means and to the motor means, able to control the operation to stop, retract or open the mobile panel in relation to the chassis frame immediately upon the successive detection of said impact pulsed wave and/or of a so-called pressure variation of dynamic pressure waves by the receiving means and corresponding to an obstacle in contact with and/or deforming said flexible tube respectively. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A device for detecting obstacles comprising deformable tubular means or flexible tube, characterized by
means of detecting the docking impact of the obstacle against the deformable tubular means or flexible tube, for example by measuring the sonic or infrasonic pulse and/or the pressure wave, emitted in the deformable tubular means or flexible tube on the docking impact of the obstacle against the deformable tubular means or flexible tube, means of detecting the pinching or the crushing of the obstacle on the deformable tubular means or flexible tube, for example by measuring the variation of the pressure of the air generated by the pinching or crushing and/or of a sonic or infrasonic signal (reference signal) transmitted within the deformable tubular means or flexible tube, analysis means incorporating, in their processing, compensations for the wear of the components and of the sensors by a loop for automatically regulating the gains and/or impact and pinching thresholds, making the device almost or completely insensitive to the climatic variations (temperature, humidity, pressure) and to any changes in attenuation of the channel of the flexible tube, and a self-checking device for checking for the absence of an obstacle on the flexible tube, placed in operation immediately upon the control of the mobile panel or immediately upon the starting up of the vehicle and checking that the transmission of the dynamic pressure wave signal from the emitting means to the receiving means is carried out normally and without obstacle before activating the obstacle detection device.
Specification