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86 results on '"Ouvry L"'

2. UWB Radar sensor characterization for obstacle detection with application to the smart white cane

Author

Ouvry, L., Debicki, O., Lesecq, Suzanne, Foucault, J, Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), and lesecq, suzanne

Subjects
[SPI]Engineering Sciences [physics], [SPI] Engineering Sciences [physics], [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing
Abstract

International audience; Obstacle detection capability is of great interest in application domains such as navigation of Visually Impaired and Blind people. To perform free-space assessment over the whole person height, range sensors are usually placed on a white cane and their measurements are analyzed to provide feedback about potential harmful obstacles. Thanks to technology progress both at hardware and software levels, integration of such obstacle detection capabilities in a white cane seems conceivable. It is well admitted that ultra-sonic range sensors have limited sensing range (typically < 3 m) and difficulties of operating on highly reflective surfaces [1]. Laser-based solutions can be highly sensitive to ambient natural light and identification of transparent or mirror-like surfaces is difficult. RF Radar range sensor performance is affected by the electromagnetic backscattering characteristics of the obstacle (Radar Cross Section). The electromagnetic response is in general very different from the mechanical response to ultrasound waves or optical response to LiDAR. [2] shows that Ultra-Wide-Band (UWB) radar can be used effectively to detect obstacles under rain, snow, fog and smoke, thus being complementary to LiDAR. Therefore, to overcome limitations of each range sensor technology, Ultra-Sound, UWB RF Radar and LiDAR will be co-integrated in the obstacle detection system the H2020 INSPEX project is targeting (Fig. 1) [3]. This work details the characterization and future enhancements of the UWB RF Radar developed in the course of the project. The complete system should not exceed 200gr in weight and 100cm3 in volume. Ten hours of lifetime in continuous use are expected with an initial target for power consumption smaller than 500mW. The obstacles could move at an unpredictable speed and direction and the system should detect reliably objects moving at a speed of ~1.4 m/s worst case (relative speed between the user and the objects) and be able to detect obstacles up to a distance of 4m. After a static characterization phase of the UWB Radar, measurements were performed in mobility conditions. The Radar is placed on a cart moving linearly towards the obstacle with a colliding trajectory. The relative radial speed is about-0.15m/s. The right drawing in Fig 1 shows the Radar response over time with three snapshots in the speed domain. The top left curve clearly shows the “approaching” obstacle wave-front while the three other curves showhow the speed can be exploited in colliding trajectories detection.

Published
2018

3. Towards a portable smart spatial exploration system for environment perception

Author

Lesecq, S., Debicki, O., Foucault, J., Ouvry, L., Correvon, M., Dudnik, G., Barrett, J., Rea, S., Alan McGibney, Birot, F., Chaumont, H., Sevrin, L., Banach, R., Razavi, J., Herveg, J., Grandjean, N., Jackson, C., Buckley, S., Di Matteo, A., Di Palma, V., Ó Murchú, C., Mathewson, A., O Keeffe, R., lesecq, suzanne, Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre Suisse d'Electronique et de Microtechnique SA [Neuchatel] (CSEM), Centre Suisse d'Electronique et Microtechnique SA (CSEM), Cork Institute of Technology (CIT), GoSense, School of Computer Science [Manchester], University of Manchester [Manchester], Université de Namur [Namur] (UNamur), SensL, STMicroelectronics, Tyndall National Institute [Cork], and Otto, Thomas

Subjects
[SPI.AUTO] Engineering Sciences [physics]/Automatic, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.AUTO]Engineering Sciences [physics]/Automatic
Abstract

International audience

Published
2018

4. INSPEX: Integrated portable multi-sensor obstacle detection device. Application to navigation for visually impaired people

Author

Debicki, O, Mareau, N, Ouvry, L., Foucault, J, Lesecq, Suzanne, Dudnik, Gabriela, Correvon, Marc, lesecq, suzanne, Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre Suisse d'Electronique et de Microtechnique SA [Neuchatel] (CSEM), Centre Suisse d'Electronique et Microtechnique SA (CSEM), and This work has been partly funded by the European Union's Horizon 2020 Research and Innovation programme under grant agreement no 730953.This work was supported in part by the Swiss secretariat for education, research and innovation (SERI) under grant 16.0136 730953.

Subjects
ACM: B.: Hardware/B.1: CONTROL STRUCTURES AND MICROPROGRAMMING/B.1.4: Microprogram Design Aids/B.1.4.0: Firmware engineering, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [INFO]Computer Science [cs], [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [INFO] Computer Science [cs], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ComputingMilieux_MISCELLANEOUS, ACM: D.: Software/D.2: SOFTWARE ENGINEERING/D.2.10: Design, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing, [INFO.INFO-ES] Computer Science [cs]/Embedded Systems
Abstract

International audience

Published
2018

5. INSPEX:Integrated smart spatial exploration system

Author

Lesecq, S., Ouvry, L., Correvon, M., Dudnik, G., Barrett, J., McGibney, A., Birot, F., De Chaumont, H., Banach, R., Van Gyseghem, J. M., Herveg, J., Jackson, C., Buckley, S., Di Matteo, A., Di Palma, V., Ó'Murchú, C., and Mathewson, A.

Published
2017

9. An Ultra-Low-Power 4.7mA-Rx 22.4mA-Tx Transceiver Circuit in 65-nm CMOS for M2M Satellite Communications.

Author

Ouvry, L., Lachartre, D., Bernier, C., Lepin, F., Dehmas, F., and Deslandes, V.

Abstract

As of today, the machine-to-machine and Internet of Things (IoT) markets have significantly benefited from the deployment of diverse and efficient terrestrial low-power wide area networks (LPWAN) thanks to technologies such as SIGFOX UNB, LoRa, or NB-IoT. To further increase the coverage of such networks to remote areas, a satellite-based network with close interconnection to a terrestrial one is required. In this brief, we show the feasibility of a satellite link based on system and technological concepts similar to those used for LPWAN. We additionally prove the possibility of integrating the terminal transceiver in a single CMOS IC with power consumption and cost of the same order of magnitude as the terrestrial one. To this end, a complete L-band transceiver has been implemented. The transmitter modulates 400 symbols/s QPSK signals at as high as +12 dBm output power for 22.4 mA consumption under 3.3 V. The receiver consumes 4.7 mA while detecting the presence of low Earth orbit satellite pilots and demodulating the 20 ksymbols/s QPSK signal with −112 dBm sensitivity. The baseband processing handles up to 40 kHz Doppler shift and +/ − 440 Hz/s Doppler drift. The IC is processed in 65-nm CMOS technology from Taiwan Semiconductor Manufacturing Company Limited. [ABSTRACT FROM PUBLISHER]

Published
2018
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11. Short-range Wireless Communications

Author

Fettweis, G, Zimmermann, E, Allen, B, O'Brien, DC, Chevillat, P, Jungnickel, V, Jorswiek, E, Zillmann, P, Petrovic, D, Schwieger, K, Windisch, M, Seller, O, Siohan, P, Lallemand, F, Salingue, G, Pierrot, J, Debbah, M, Gesbert, D, Knopp, R, van der Perre, L, Brown, T, Zhang, D, Malik, W, Edwards, D, Stevens, C, Ouvry, L, Morche, D, Oppermann, I, Celentano, U, Katz, M, Wang, P, Kalliojarvi, K, Arnon, S, Matsumoto, M, Green, R, Jivkova, S, Coronel, P, Schott, W, Zasowski, T, Ghavami, M, He, R, Sorgel, W, Kuhnert, C, Wiesbeck, W, Hernandez, M, Siwiak, K, Manny, B, Mucchi, L, Morosi, S, and Ran, M

Published
2006

15. An UWB-UHF semi-passive RFID System for localization and tracking applications

Author

D'Errico, R., primary, Bottazzi, M., additional, Natali, F., additional, Savioli, E., additional, Bartoletti, S., additional, Conti, A., additional, Dardari, D., additional, Decarli, N., additional, Guidi, F., additional, Dehmas, F., additional, Ouvry, L., additional, Alvarado, U., additional, Hadaschik, N., additional, Franke, C., additional, Mhanna, Z., additional, Sacko, M., additional, Wei, Y., additional, and Sibille, A., additional

Published
2012
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24. An ultra low power 130nm CMOS direct conversion transceiver for IEEE802.15.4

Author

Bernier, C., primary, Hameau, F., additional, Billiot, G., additional, de Foucauld, E., additional, Robinet, S., additional, Durupt, J., additional, Dehmas, F., additional, Mercier, E., additional, Vincent, P., additional, Ouvry, L., additional, Lattard, D., additional, Gary, M., additional, Bour, C., additional, Prouvee, J., additional, and Dumas, S., additional

Published
2008
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40. INSPEX: Make environment perception available as a portable system

Author

Foucault, J., Lesecq, S., Debicki, O., Mareau, N., Ouvry, L., Correvon, M., Dudnik, G., Barrett, J., Rea, S., Mcgibney, A., Birot, F., Chaumont, H., Banach, R., Razavi, J., Herveg, J., Thiry, F., Jackson, C., Buckley, S., Di Matteo, A., Di Palma, V., Passoni, M., Quaglia, F., Cian Ó Murchú, and O Keeffe, R.

Subjects
INSPEX project, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, H2020, ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS, Personal portable multi-sensors, miniaturised, low power device, Obstacle detection
Abstract

Obstacle avoidance systems for autonomous vehicles combine multiple sensing technologies (i.e. LiDAR, Radar, Ultrasound and Visual) to detect different types of obstacles across the full range of lighting and weather conditions. Sensor data are fused with vehicle orientation (obtained for instance from an Inertial Measurement Unit and/or compass) and navigation subsystems. Power hungry, they require powerful computational capability, which limits their use to high-end vehicles and robots.

41. INSPEX: Integrated smart spatial exploration system

Author

Lesecq, S., Ouvry, L., Correvon, M., Dudnik, G., Barrett, J., Alan McGibney, Birot, F., Chaumont, H., Banach, R., Gyseghem, J. -M, Herveg, J., Jackson, C., Buckley, S., Di Matteo, A., Di Palma, V., Ó Murchú, C., Mathewson, A., Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre Suisse d'Electronique et Microtechnique SA (CSEM), Cork Institute of Technology (CIT), GoSense, School of Computer Science [Manchester], University of Manchester [Manchester], Université de Namur [Namur] (UNamur), SensL, STMicroelectronics, Tyndall National Institute [Cork], European Union’s Horizon 2020 research and innovation programme under grant agreement No 730953., and lesecq, suzanne

Subjects
[SPI.AUTO] Engineering Sciences [physics]/Automatic, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [INFO.INFO-RB] Computer Science [cs]/Robotics [cs.RO], [INFO.INFO-RB]Computer Science [cs]/Robotics [cs.RO], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.AUTO]Engineering Sciences [physics]/Automatic
Abstract

International audience; There has been a very large amount of work done in recent years on obstacle avoidance systems for autonomous vehicles. To detect different types of obstacles across the full range of possible lighting and weather conditions, these obstacle detection systems typically combine multiple subsystems including LiDAR, radar, IR and optical. The data from these subsystems is integrated and combined with vehicle orientation (typically an IMU and compass) and navigation subsystems. As the image above shows, these systems are typically large, heavy and have high power consumption.The question the INSPEX partners have asked themselves is “what if we could miniaturise an obstacle detection system like this and reduce its power so that it could be portable/wearable?” This is very challenging but it would open many new applications in, for example, assistive guidance for the visually impaired, human guidance in low visibility conditions (night, smoke, fog) obstacle detection for small or humanoid robots, and small drone obstacle detection for obstacle avoidance procedures. This encapsulates the objective of INSPEX: to combine LiDAR, UWB RF radar and ultrasonic range sensing with an IMU, environmental sensing, signal and data processing, wireless communications, energy harvesting and user interface; all in a miniature, low power, small size, light weight system, with a flexible system integration methodology that will allow the INSPEX smart spatial exploration system to be applied to a range of different application areas.As a demonstrator, INSPEX partners have chosen an application of obstacle detection for the visually impaired and blind (VIB) community with the objective of integrating the INSPEX system into a standard white cane. This will allow the cane to detect various kind of obstacles (shape, material, colour, height) and alert the user of their location using 3D spatial audio feedback. The cane will also be able to interact with the wider Internet-of-Things environment surrounding the user. Other potential application domains for the INSPEX smart spatial exploration system will also benefit from INSPEX system and submodules low cost and low-power. In particular, drones and robots might adopt the INSPEX system as an add-on system to sense their surroundings at low cost and with low power budget.

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