METHOD AND DEVICE FOR LOCATING THE WHEELS OF A VEHICLE
First Claim
1. A method of locating wheels of a vehicle (V) on which are mounted n wheels (1-4) each equipped with an electronic module (5-8) designed to emit, to a central unit (9) mounted on said vehicle, electromagnetic signals representative of operating parameters of each wheel and an identification code of the latter, said location method consisting:
- in having, in a fixed position on the vehicle (V), in the vicinity of at least (n-1) wheels (1-4), an emission means (10-13) in which is stored a code, called location code, able to be identified by the central unit (9) and to enable the latter to locate the position of said emission means on the vehicle (V),and in implementing a location procedure consisting in;
controlling an activation of each emission means (10-13) upon the emission of an electromagnetic signal by the electronic module (5-8) located in the vicinity of said emission means, andin inserting said location code into said electromagnetic signal by modulating the absorption/reflection of said electromagnetic signals, andin delivering to the central unit (9) a signal incorporating the location code of said emission means (10-13) associated with the identification code of the wheel (1-4) located in the vicinity of the latter,said location method being characterized in that;
radio-tags are used as emission means,the emission by the electronic modules (5-8) of electromagnetic signals incorporating a final portion consisting of a pure wave is controlled, andthe radio-tags (10-13) are activated so as to insert the location codes into the electromagnetic signals by modulating the absorption/reflection of said pure waves.
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Accused Products
Abstract
A method and device for locating n wheels of a vehicle each equipped with an electronic module designed to emit, to a central unit, electromagnetic signals representative of operating parameters of each wheel and an identification code of the latter. There is, in a fixed position on the vehicle, in the vicinity of at least (n-1) wheels, a radio-tag in which is stored a location code, able to be identified by the central unit and enable the latter to locate the position of the radio-tag on the vehicle. In order to locate the wheels, an activation of each radio-tag is controlled so as to deliver to the central unit a signal incorporating the location code of this radio-tag associated with the identification code of the wheel located in the vicinity of the latter. The electromagnetic signals incorporate a final portion consisting of a pure wave, and the activation of the radio-tags is done so as to insert the location codes into the electromagnetic signals by modulating the absorption/reflection of the pure waves.
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Citations
13 Claims
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1. A method of locating wheels of a vehicle (V) on which are mounted n wheels (1-4) each equipped with an electronic module (5-8) designed to emit, to a central unit (9) mounted on said vehicle, electromagnetic signals representative of operating parameters of each wheel and an identification code of the latter, said location method consisting:
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in having, in a fixed position on the vehicle (V), in the vicinity of at least (n-1) wheels (1-4), an emission means (10-13) in which is stored a code, called location code, able to be identified by the central unit (9) and to enable the latter to locate the position of said emission means on the vehicle (V), and in implementing a location procedure consisting in; controlling an activation of each emission means (10-13) upon the emission of an electromagnetic signal by the electronic module (5-8) located in the vicinity of said emission means, and in inserting said location code into said electromagnetic signal by modulating the absorption/reflection of said electromagnetic signals, and in delivering to the central unit (9) a signal incorporating the location code of said emission means (10-13) associated with the identification code of the wheel (1-4) located in the vicinity of the latter, said location method being characterized in that; radio-tags are used as emission means, the emission by the electronic modules (5-8) of electromagnetic signals incorporating a final portion consisting of a pure wave is controlled, and the radio-tags (10-13) are activated so as to insert the location codes into the electromagnetic signals by modulating the absorption/reflection of said pure waves. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13)
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7. A device for locating wheels of a vehicle (V) on which are mounted n wheels (1-4) each equipped with an electronic module (5-8) designed to emit, to a central unit (9) mounted on said vehicle, electromagnetic signals representative of operating parameters of each wheel (1-4) and an identification code of the latter, said location device comprising:
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at least (n-1) emission means (10-13) each arranged in a fixed position on the vehicle (V), in the vicinity of a wheel (1-4), each of said emission means including means of storing a code, called location code, able to be identified by the central unit (9) and to enable the latter to locate the position of said emission means on the vehicle (V), and means of activating each emission means (10-13) able to generate the transmission to the central unit (9) of a signal incorporating the location code of this radio-tag (10-13) associated with the identification code of the wheel (1-4) located in the vicinity of the latter, said location device being characterized in that it comprises; radio-tags, as emission means, means of controlling the emission by the electronic modules (5-8) of electromagnetic signals incorporating a final portion consisting of a pure wave, and in that the means of activating the radio-tags (10-13) insert the location codes into the electromagnetic signals by modulating the absorption/reflection of said pure waves.
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Specification