Signal transmission/reception device
AssigneeValeo Securite Habitacle
InventorsEric Leconte, Stephane Violleau, Michael Notarianni
Life of this patent
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Abstract
The invention relates to a signal transmission/reception device (DER) which can cooperate with an antenna device (A) capable of emitting a magnetic field. The invention is characterised in that the device (DER) comprises the following elements for transmission, namely: a power stage (P) for sending a symmetrical square-wave voltage signal (U0) to the input of the antenna device (A) in order to supply same with a current that can be used to generate the emitted magnetic field; and a current measuring stage (C) for measuring the current circulating in the antenna device (A). The invention is suitable for motor vehicles.
Claims9
A signal transmission-reception device (TRD) configured to cooperate with an antenna device that emits a magnetic field, wherein the signal transmission-reception device comprises, for transmission:
- a power stage for sending a symmetric square voltage signal as input to the antenna device to provide the antenna device with a current for generating the magnetic field emitted, and
- a current measurement stage for measuring the current flowing in the antenna device.
A method of transmitting-receiving signals bound for an antenna device, comprising:
- sending a symmetric square voltage signal as input to the antenna device to provide the antenna device with a current for generating a magnetic field emitted by the antenna device, and
- measuring the current flowing in the antenna device.
Dependencies are inferred from the claim text.