Embedded Platform for Generic High-order Sigma-delta Accelerometers Testing
| Autor: | Nuno Brito, Luís A. Rocha, F. S. Alves, Jorge Cabral, Joao Gaspar, João L. Monteiro, Vasco António Lourenço Lima |
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| Přispěvatelé: | Universidade do Minho |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Decimation Universal asynchronous receiver/transmitter Science & Technology business.industry 020208 electrical & electronic engineering 010401 analytical chemistry Bandwidth (signal processing) Open-loop controller 02 engineering and technology General Medicine Accelerometer Delta-sigma modulation Configurable real-time embedded system 01 natural sciences MEMS control 0104 chemical sciences Control system 0202 electrical engineering electronic engineering information engineering Electronic engineering business Field-programmable gate array Sigma-delta control Engineering(all) |
| Zdroj: | Procedia Engineering. 168:954-957 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2016.11.314 |
| Popis: | "Procedia Engineering, vol. 168 (2016)" The transition from an open loop to a closed loop sensing approach in MEMS accelerometers is an important step towards improving the sensor noise performance, bandwidth and time responses [1]. However, this approach presents some computational challenges due to the fast nature of the mechanical part, and ultimately, the performance of the feedback circuit will establish the sensor performance limits that can be accomplished.This paper presents a processor-centric digital platform assisted by an FPGA for real-time control of MEMS accelerometers through a configurable multi-order Delta Sigma modulation technology module. The system is designed to allow a high-level fine tune of the system control parameters, such as sensor offset, actuation voltage, sampling frequency, filters coefficients, Delta Sigma order and coefficients as well as the output decimation ratio. The processor is used to control the hardware, perform time-critical synchronous operations and provide an external control port through a UART API protocol. The platform has been successfully tested in multiple Delta Sigma configurations. The first author is supported by FCT– Fundação para a Ciência e Tecnologia throught the grant SFRH/BD/91806/2012. This work has been supported by COMPETE: POCI-01-0145-FEDER-007043 and FCT – Fundação para a Ciência e Tecnologia within the Project Scope: UID/CEC/00319/2013. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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