Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Minmaxmedical

Vincent Josselin

Thierry Thomas

Saifeddine Aloui

Francois Bertrand

Sandra Rousseau

François Bertrand

Jerome Paulet

Loïc Huguel

Jérôme Paulet

The method relates to a synchronization of a magnetic locating system including a first device and a second device each including an oscillator, a time counter clocked by the oscillator, and a radiocommunication module. The locating system also includes a device for emitting and receiving alternating magnetic fields, the device being configured to allow a propagation of alternating magnetic fields between the first and second devices, the device for emitting and receiving alternating magnetic fields being connected to the oscillators of the first and second devices. The synchronizing method includes a synchronizing step that is configured to synchronize the oscillators of the first and second devices by adjusting, by servo-controlling the oscillator of the second device, the operation of the time counter of the second device to the operation of the time counter of the first device.

Method for synchronizing a magnetic locating system

The invention relates to an electromagnetic position tracking system, including: an electromagnetic field emission device including at least one emitter coil and, connected to the emitter coil, a first generator of an electric signal for exciting the emitter coil; a device for receiving the electromagnetic field emitted by the emission device, including at least one receiver coil, and, connected to the receiver coil, a circuit for reading an electric signal induced in the receiver coil; and a system for measuring at least one parameter of the reception device, including, connected to the receiver coil, a second generator of an electric signal for exciting the receiver coil.

Electromagnetic position tracking system

The power stage at the output of a high-frequency generates operates in class D and comprises a voltage supply and a common earth, a first and a second switch linked to the common earth and periodically switched on at a high frequency F; these switches are linked to two common-mode inductors connected in a Guanella balun. Each common-mode inductor comprises two inductive lines with strong mutual coupling. The first switch is linked to the input of the first inductive line but not to the second, third and fourth lines and the second switch is linked to the input of the fourth inductive line but not to the first, second and third lines, the output of the first inductive line is linked to an output of the generator, the output of the fourth inductive line is linked to an internal resistor, the inputs of the second and third inductive lines are linked to the supply voltage source, the output of the third inductive line is linked to the output of the first inductive line and the output of the second inductive line is linked to the output of the fourth inductive line.

High-frequency generator

Growing community of inventors

Grenoble, France

Vincent Josselin