Practical application of the Optical Wireless communication technology (OWLS) in extreme environments

Arruego, Ignacio; Rivas, J.; Martinez, J.; Martín-Ortega, Alberto; Apéstigue, V.; Mingo, J. de; Jiménez, Juan J.; Álvarez, F.; González-Guerrero, Miguel; Domínguez, José Antonio

doi:10.1109/wisee.2015.7392981

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…The proposed architecture is based on a distributed processor where all terminals are connected by an Optical Wireless CAN Bus [7]. Each unit can achieve redundantly all critical duties that belong to the OBC, and separately they will give specific services to Sub-Systems (S/S) or Pay-Loads (P/L) connected to them.…”

Section: On-board Computermentioning

confidence: 99%

“…On-Board Communications Subsystem (Ob-Com) is based on a set of miniaturized transceivers capable of implementing an optical wireless network inside the satellite [7]. This network is made available through a CAN BUS implementation, conferring the OBC instant and complete communication between all its DOTs.…”

Section: On-board Computermentioning

confidence: 99%

“…OPTOS was conceived with no data wires (wireless optical data bus communication). Optical Wireless Links to intra-Spacecraft communications (OWLS) technology [7,8] is based on diffuse light emitted by LED through open space within the satellite, which is received by discrete photodiodes and processed by programmable logic devices (PLD). This wireless approach facilitates the implementations of new collaborative hardening techniques, where all messages sent by any unit are received by all units at the same time (mesh-like topologies).…”

Section: Introductionmentioning

confidence: 99%

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Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat

Martín-Ortega

Rodríguez

Mingo

et al. 2019

International Journal of Aerospace Engineering

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The current evolution of the space missions demands to increase the computing capacities of the on-board computer while reducing its power consumption. This requirement evolves faster than the ability of the manufacturers to develop better space-qualified processors. To meet the strong requirements, the National Institute of Aerospace Technology has developed a distributed on-board computer based on commercial off-the-shelf (COTS). This computer, named OPTOS, provides enhanced computational capacities with respect to what computers of other small satellites typically provide. To maintain the reliability needed to perform typical critical activities such as real-time maintenance or current surveillance, authors have conceived a set of collaborative hardening techniques, taking advantage of the distributed architecture of the OPTOS On-Board Computer. The 3-year mission data analysis shows the feasibility of the collaborative hardening techniques implemented, despite using SEU sensitive devices. The authors describe the processes and tools used to analyse the data and clearly expose the functional errors found at unit level, while the system remains unfaulty and reliable thanks to the collaborative techniques.

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Section: On-board Computermentioning

confidence: 99%

Section: On-board Computermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat

Martín-Ortega

Rodríguez

Mingo

et al. 2019

International Journal of Aerospace Engineering

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“…Wireless communication inside a CubeSat is not common (Bouwmeester et al, 2017), but a few experiments have been performed with a wireless sun sensor (de Boom et al, 2011) using a proprietary wireless standard. A custom optical variant of the CAN bus has even been demonstrated as main data bus (Arruego et al, 2016). The advantages of wireless communication become most apparent for sensors which are remote from the internal printed circuit board and could potentially be self-powered and thus completely wireless (Amini et al, 2009), e.g.…”

Section: Data Bus Architecturementioning

confidence: 99%

Towards an innovative electrical interface standard for PocketQubes and CubeSats

Bouwmeester

Linden

Povalač

et al. 2018

Advances in Space Research

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Developers experience issues with the compatibility, connector size and robustness of electrical interface standards for CubeSats and PocketQubes. There is a need for a lean and robust electrical interface standard for these classes of satellites. The proposed interface standard comprises a linear data bus which is used for housekeeping data, internal commands and small-to-moderate payload data. A community based analytic hierarchy process is used for the trade-off of design options, resulting in the selection of RS-485 as standard data bus, mainly due to its low power consumption and high effective data throughput compared to other candidates. Several switched and protected battery voltage lines are distributed from the central electrical power subsystem unit to the other subsystems to enable a simple and efficient power distribution. The harness comprises a 14 and 9 pin stackable connector for CubeSats and PocketQubes, respectively, occupying very little board space.

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Early SEU sensitivity assessment for collaborative hardening techniques: A case study of OPTOS processing architecture

Martín-Ortega

Portela-García

Mingo

et al. 2019

Microelectronics Reliability

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Practical application of the Optical Wireless communication technology (OWLS) in extreme environments

Cited by 5 publications

References 5 publications

Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat

Data Analysis and Results of the Radiation-Tolerant Collaborative Computer On-Board OPTOS CubeSat

Towards an innovative electrical interface standard for PocketQubes and CubeSats

Early SEU sensitivity assessment for collaborative hardening techniques: A case study of OPTOS processing architecture

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