Tire blow-out detector
First Claim
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1. A device for detecting substantially sudden and significant loss of tire pressure, comprising:
- a pressure variation detector of the piezoelectric type, capable of responding in a safety time interval to a substantially significant and rapid variation in the pressure inside the cavity of the tire, and which acts on another element, a management module, cooperating with said detector, said pressure variation detector comprising a casing provided with two chambers, insulated substantially from one another and separated by a piezoelectric type deformable membrane, a first chamber being subject to a reference pressure and the second being in fluid communication with the environment of the medium in which it is desired to effect monitoring, said deformable membrane adopting a given substantially stable profile in the absence of a variation in the pressure differential between the two chambers, said membrane being adapted to deform so as to pass from a first profile to a second profile under the action of a variation in the pressure of said environment, the deformations thus produced allowing the generation of an electrical signal, the strength of which is related to the degree of deformation;
a management module, cooperating with said detector and capable, on the basis of the information supplied by said detector, of sending a signal when a given pressure variation threshold is reached.
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Abstract
A device for detecting substantially sudden and significant loss of pressure in a tire, comprising:
a pressure variation detector capable on the one hand of responding in a safety time interval to a substantially significant and rapid variation in the pressure inside the tire cavity, and on the other hand of acting on another element cooperating with said detector;
a management module, cooperating with said detector and capable, on the basis of the information supplied by said detector, of sending a signal when a given pressure variation threshold is reached.
10 Citations
13 Claims
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1. A device for detecting substantially sudden and significant loss of tire pressure, comprising:
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a pressure variation detector of the piezoelectric type, capable of responding in a safety time interval to a substantially significant and rapid variation in the pressure inside the cavity of the tire, and which acts on another element, a management module, cooperating with said detector, said pressure variation detector comprising a casing provided with two chambers, insulated substantially from one another and separated by a piezoelectric type deformable membrane, a first chamber being subject to a reference pressure and the second being in fluid communication with the environment of the medium in which it is desired to effect monitoring, said deformable membrane adopting a given substantially stable profile in the absence of a variation in the pressure differential between the two chambers, said membrane being adapted to deform so as to pass from a first profile to a second profile under the action of a variation in the pressure of said environment, the deformations thus produced allowing the generation of an electrical signal, the strength of which is related to the degree of deformation;
a management module, cooperating with said detector and capable, on the basis of the information supplied by said detector, of sending a signal when a given pressure variation threshold is reached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification