Scientific direction Development of key enabling technologies
Transfer of knowledge to industry

PostDocs : selection by topics

Engineering science >> Instrumentation
2 proposition(s).

Chemical multisensor array system embedded on miniaturized robots for search and rescue operations

DM2I (LIST)

Laboratoire Capteurs Diamants

01-01-2020

PsD-DRT-19-0096

emmanuel.scorsone@cea.fr

The postdoctoral researcher will work in the framework of the H2020-CURSOR project funded by the European Commission. This project will start in September 2019 and focus on the development of miniaturized robotic equipment and advanced sensor technologies for search and rescue operations. The main task of the candidate will be to integrate off-the-shelf and/or experimental chemical sensors onto miniaturized robots developed by another partner of the CURSOR consortium, in strong collaboration with chemical sensors specialists. This will include the development of dedicated read-out and data communication electronics, power management, data processing e.g. using multiparametric data analysis algorithms, etc. The developments will take into account a number of challenges with respect to the usage case (weight and size limitations, autonomy, resilience in harsh environments, etc.). The candidate will also take part in the various technical meetings with the other consortium members, writing of deliverables, and possibly field testing.

Compressed Sensing for ultrasonic imaging: disruptive method development and prototyping

Département Imagerie Simulation pour le Contrôle (LIST)

Laboratoire Méthodes CND

01-01-2020

PsD-DRT-19-0099

olivier.mesnil@cea.fr

In non-destructive ultrasonic testing, multi-element sensors are used for the inspection of structures to ensure the safety of people and infrastructures. Currently, one of the driving factor of an ultrasonic method is the number of elements of the sensor, influencing the speed and efficiency of the inspection but also the cost and the volume of the equipment. This project aims at developing a prototype of a multi-element sensor with a limited number of elements compared to current state of the art equipment, without losing imaging resolution. To achieve this goal, Compressed Sensing (CS), a recent technique of signal processing allowing to go beyond the traditional sampling theorems and to reconstruct data from severely undersampled measurements, will be used. The ultrasonic inspection procedure will need to be entirely rethought to meet the CS requirements, specifically the sparsity of the measured data and the incoherence of the measurement process. The expected results is a significant reduction (of the order of 5) of the number of elements to conduct imaging, which would be a true revolution in NDT with direct applications in various industrials sectors. The following laboratories, all located in Saclay (France) of the CEA (the French atomic commission), will participate to the project: the NDT department for its expertise in multi-element ultrasonic testing and Neurospin and Cosmostat for their expertises in the field of CS, mainly applied to medical RMI imaging and astrophysics, respectively. The collaboration between these three labs, each among the worldwide leading institutes in their respective fields, will ensure the creation of a new and disruptive family of sensors.

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