Smart Capture Modules for Direct Sensor-to-FPGA Interfaces
Direct sensor–digital device interfaces measure time dependent variables of simple circuits to implement analog-to-digital conversion. Field Programmable Gate Arrays (FPGAs) are devices whose hardware can be reconfigured to work in parallel. They usually do not have analog-to-digital converters, but...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-12-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/15/12/29878 |
| _version_ | 1798039893019983872 |
|---|---|
| author | Óscar Oballe-Peinado Fernando Vidal-Verdú José A. Sánchez-Durán Julián Castellanos-Ramos José A. Hidalgo-López |
| author_facet | Óscar Oballe-Peinado Fernando Vidal-Verdú José A. Sánchez-Durán Julián Castellanos-Ramos José A. Hidalgo-López |
| author_sort | Óscar Oballe-Peinado |
| collection | DOAJ |
| description | Direct sensor–digital device interfaces measure time dependent variables of simple circuits to implement analog-to-digital conversion. Field Programmable Gate Arrays (FPGAs) are devices whose hardware can be reconfigured to work in parallel. They usually do not have analog-to-digital converters, but have many general purpose I/O pins. Therefore, direct sensor-FPGA connection is a good choice in complex systems with many sensors because several capture modules can be implemented to perform parallel analog data acquisition. The possibility to work in parallel and with high frequency clock signals improves the bandwidth compared to sequential devices such as conventional microcontrollers. The price to pay is usually the resolution of measurements. This paper proposes capture modules implemented in an FPGA which are able to perform smart acquisition that filter noise and achieve high precision. A calibration technique is also proposed to improve accuracy. Resolutions of 12 effective number of bits are obtained for the reading of resistors in the range of an example piezoresistive tactile sensor. |
| first_indexed | 2024-04-11T21:59:57Z |
| format | Article |
| id | doaj.art-e98770d6a61341efbae97b903f244b5e |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T21:59:57Z |
| publishDate | 2015-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e98770d6a61341efbae97b903f244b5e2022-12-22T04:00:59ZengMDPI AGSensors1424-82202015-12-011512317623178010.3390/s151229878s151229878Smart Capture Modules for Direct Sensor-to-FPGA InterfacesÓscar Oballe-Peinado0Fernando Vidal-Verdú1José A. Sánchez-Durán2Julián Castellanos-Ramos3José A. Hidalgo-López4Departamento de Electrónica, Universidad de Málaga, Andalucía Tech, Campus de Teatinos, Málaga 29071, SpainDepartamento de Electrónica, Universidad de Málaga, Andalucía Tech, Campus de Teatinos, Málaga 29071, SpainDepartamento de Electrónica, Universidad de Málaga, Andalucía Tech, Campus de Teatinos, Málaga 29071, SpainDepartamento de Electrónica, Universidad de Málaga, Andalucía Tech, Campus de Teatinos, Málaga 29071, SpainDepartamento de Electrónica, Universidad de Málaga, Andalucía Tech, Campus de Teatinos, Málaga 29071, SpainDirect sensor–digital device interfaces measure time dependent variables of simple circuits to implement analog-to-digital conversion. Field Programmable Gate Arrays (FPGAs) are devices whose hardware can be reconfigured to work in parallel. They usually do not have analog-to-digital converters, but have many general purpose I/O pins. Therefore, direct sensor-FPGA connection is a good choice in complex systems with many sensors because several capture modules can be implemented to perform parallel analog data acquisition. The possibility to work in parallel and with high frequency clock signals improves the bandwidth compared to sequential devices such as conventional microcontrollers. The price to pay is usually the resolution of measurements. This paper proposes capture modules implemented in an FPGA which are able to perform smart acquisition that filter noise and achieve high precision. A calibration technique is also proposed to improve accuracy. Resolutions of 12 effective number of bits are obtained for the reading of resistors in the range of an example piezoresistive tactile sensor.http://www.mdpi.com/1424-8220/15/12/29878direct sensor-to-digital device interfaceFPGAsparallel analog data acquisition |
| spellingShingle | Óscar Oballe-Peinado Fernando Vidal-Verdú José A. Sánchez-Durán Julián Castellanos-Ramos José A. Hidalgo-López Smart Capture Modules for Direct Sensor-to-FPGA Interfaces Sensors direct sensor-to-digital device interface FPGAs parallel analog data acquisition |
| title | Smart Capture Modules for Direct Sensor-to-FPGA Interfaces |
| title_full | Smart Capture Modules for Direct Sensor-to-FPGA Interfaces |
| title_fullStr | Smart Capture Modules for Direct Sensor-to-FPGA Interfaces |
| title_full_unstemmed | Smart Capture Modules for Direct Sensor-to-FPGA Interfaces |
| title_short | Smart Capture Modules for Direct Sensor-to-FPGA Interfaces |
| title_sort | smart capture modules for direct sensor to fpga interfaces |
| topic | direct sensor-to-digital device interface FPGAs parallel analog data acquisition |
| url | http://www.mdpi.com/1424-8220/15/12/29878 |
| work_keys_str_mv | AT oscaroballepeinado smartcapturemodulesfordirectsensortofpgainterfaces AT fernandovidalverdu smartcapturemodulesfordirectsensortofpgainterfaces AT joseasanchezduran smartcapturemodulesfordirectsensortofpgainterfaces AT juliancastellanosramos smartcapturemodulesfordirectsensortofpgainterfaces AT joseahidalgolopez smartcapturemodulesfordirectsensortofpgainterfaces |