Commissariat a L'energie Atomique

Michel Martin

Edmond Tournier

Bernard Piaget

Jean-Francois Piquard

Francis Sauvage

Jacques Vacher

Jean-Paul Bonnefoy-Claudet

André Sault

Michel Blayrac

Jean-Charles Dubuis

Jean-Luc Lecomte

Gilles Polydor

The control system is used to control manipulation equipment () and carrying equipment () confined in a containment () inaccessible to operators and to perform maintenance operations related to electronic circuits for onboard equipment enclosed in the containment (). Control is achieved by 'onboard' means in the containment () composed mainly of a power supply box () and one or several control boxes () fixed onto a base () placed permanently on the carrying equipment () of the manipulation equipment (). Several power supply circuits and electronic control boards are provided to enable redundant operation. Application to remote manipulation equipment used for dismantling and reprocessing of contaminated equipment.

System for controlling lifting and remote handling units located in a confined enclosure

This device comprises a liquid radioactive source which, when the patient is absent, is used for calibrating the ionizing radiation detectors of the apparatus and is located in a container which can contains the source. The device comprises a storage magazine communicating with the container by at least one pipe and means for transferring the liquid source from the storage magazine to the container and vice-versa, the container being fixed with respect to the apparatus and the magazine having a volume at least equal to that of the container.

Calibration device for nuclear medicine equipment and it use process

An echography device with dynamic focusing and sectorial scanning, comprising a transmitting portion (16) and a receiving portion (18) constituting piezoelectric transducers (4), juxtaposed in a form of a linear bar (2), each transducer (4) being associated with a delay line (26,32), the delays applied when a wave is being received being determined as a function of a reference dependent on the delays when the wave is being retransmitted and stored in a digital memory (34), the said reference being fed into a frequency adjustable oscillator (42) associated with a servo-device (38, 56, 54) through a computer.

Dynamic focusing and sectorial scanning echography device

In the synchronous detection signals of frequency Fo immersed in a noise, an auxiliary signal is produced having a period 1/2 Fo and in the form of a rectified symmetrical wave, by rectifying a symmetrical wave of period 1/Fo. The signal to be filtered is multiplied by the auxiliary signal and synchronous filtering or synchronous detection on the frequency Fo is performed on the signal obtained after the above-mentioned multiplication. Preferably the auxiliary signal is produced in the form of a rectified sinusoidal wave and a square wave reference signal from which the above-mentioned symmetrical wave is derived, having the period 1/Fo, is also used to control the synchronous detection or the synchronous filtering.

Method of processing a signal, and corresponding devices

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Eybens, France

Michel Martin