DEVICE FOR LOCATING ONE OR MORE MOBILE ELEMENTS IN A PREDETERMINED ZONE, AND METHOD IMPLEMENTED IN SUCH A DEVICE
First Claim
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1. A method for locating at least one mobile element in a predetermined zone, this method comprising the following steps:
- supplying power to at least one on-board module in the mobile element, this on-board module comprising an electronic circuit and at least one on-board coil;
generating a locating signal by the electronic circuit and transmission of this locating signal via the on-board coil;
picking up the locating signal by means of receiver coils distributed on a support in proximity to the predetermined zone;
each receiver coil having the function of picking up said locating signal when the mobile element is in proximity;
determining the location of the mobile element in the predetermined zone by detecting, a signal level on said support which is addressed in rows and columns in the form of an array by means of a processing unit connected to this support; and
the electronic circuit and the on-board coil constitute an RLC circuit that oscillates, generating the locating signal by sudden interruption of the current through the on-board coil.
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Abstract
A method is provided for locating at least one mobile element in a predetermined zone, including:
- supplying power to an on-board module in the element, this module having an electronic circuit and at least one on-board coil;
- generating a locating signal by the electronic circuit and transmission of this locating signal via the coil;
- picking up the locating signal by receiver coils on a support near the predetermined zone; each receiver coil picking up the signal when the mobile element is near;
- determining the location of the mobile element in the zone by detecting a signal level addressed in rows and columns in the form of an array by a processing unit; and the electronic circuit and the on-board coil include an RLC circuit that oscillates, generating the locating signal by sudden interruption of the current through the on-board coil.
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Citations
14 Claims
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1. A method for locating at least one mobile element in a predetermined zone, this method comprising the following steps:
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supplying power to at least one on-board module in the mobile element, this on-board module comprising an electronic circuit and at least one on-board coil; generating a locating signal by the electronic circuit and transmission of this locating signal via the on-board coil; picking up the locating signal by means of receiver coils distributed on a support in proximity to the predetermined zone;
each receiver coil having the function of picking up said locating signal when the mobile element is in proximity;determining the location of the mobile element in the predetermined zone by detecting, a signal level on said support which is addressed in rows and columns in the form of an array by means of a processing unit connected to this support; and
the electronic circuit and the on-board coil constitute an RLC circuit that oscillates, generating the locating signal by sudden interruption of the current through the on-board coil. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for locating at least one mobile element in a predetermined zone, said device comprising:
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at least one on-board module in the mobile element, this on-board module comprising an electronic circuit and at least one on-board coil for transmitting a locating signal; a power supply for this on-board module; receiver coils distributed on a support in proximity to the predetermined zone; said receiver coil has the function of detecting said locating signal when the mobile element, is in proximity;
this device further comprising;a processing unit connected to the receiver coils for determining the location of the mobile element in the predetermined zone by detecting a signal level on said support that is addressed in rows and columns in the form of an array; and the electronic circuit and the on-board coil constitute an oscillating RLC circuit, the electronic circuit being configured in order to suddenly interrupt the current through the on-board coil so as to generate the locating signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification