A simple encoding method for sigma-delta ADC based biopotential acquisition systems
Sigma Delta analogue-to-digital converters allow acquiring the full dynamic range of biomedical signals at the electrodes, resulting in less complex hardware and increased measurement robustness. However, the increased data size per sample (typically 24 bits) demands the transmission of extremely la...
| Autores principales: | , |
|---|---|
| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2017
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/118305 |
| Aporte de: |
| id |
I19-R120-10915-118305 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ingeniería Sigma delta converter Encoding Lossless compression Biomedical signal Biopotential EMG ECG Dynamic range |
| spellingShingle |
Ingeniería Sigma delta converter Encoding Lossless compression Biomedical signal Biopotential EMG ECG Dynamic range Guerrero, Federico Nicolás Spinelli, Enrique Mario A simple encoding method for sigma-delta ADC based biopotential acquisition systems |
| topic_facet |
Ingeniería Sigma delta converter Encoding Lossless compression Biomedical signal Biopotential EMG ECG Dynamic range |
| description |
Sigma Delta analogue-to-digital converters allow acquiring the full dynamic range of biomedical signals at the electrodes, resulting in less complex hardware and increased measurement robustness. However, the increased data size per sample (typically 24 bits) demands the transmission of extremely large volumes of data across the isola- tion barrier, thus increasing power consumption on the patient side. This problem is accentuated when a large number of channels is used as in current 128-256 elec- trodes biopotential acquisition systems, that usually opt for an optic bre link to the computer. An analogous problem occurs for simpler low-power acquisition platforms that transmit data through a wireless link to a computing platform. In this paper, a low-complexity encoding method is presented to decrease sample data size with- out losses, while preserving the full DC-coupled signal. The method achieved a 2.3 average compression ratio evaluated over an ECG and EMG signal bank acquired with equipment based on Sigma-Delta converters. It demands a very low processing load: a C language implementation is presented that resulted in an 110 clock cycles average execution on an 8-bit microcontroller. |
| format |
Articulo Preprint |
| author |
Guerrero, Federico Nicolás Spinelli, Enrique Mario |
| author_facet |
Guerrero, Federico Nicolás Spinelli, Enrique Mario |
| author_sort |
Guerrero, Federico Nicolás |
| title |
A simple encoding method for sigma-delta ADC based biopotential acquisition systems |
| title_short |
A simple encoding method for sigma-delta ADC based biopotential acquisition systems |
| title_full |
A simple encoding method for sigma-delta ADC based biopotential acquisition systems |
| title_fullStr |
A simple encoding method for sigma-delta ADC based biopotential acquisition systems |
| title_full_unstemmed |
A simple encoding method for sigma-delta ADC based biopotential acquisition systems |
| title_sort |
simple encoding method for sigma-delta adc based biopotential acquisition systems |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/118305 |
| work_keys_str_mv |
AT guerrerofedericonicolas asimpleencodingmethodforsigmadeltaadcbasedbiopotentialacquisitionsystems AT spinellienriquemario asimpleencodingmethodforsigmadeltaadcbasedbiopotentialacquisitionsystems AT guerrerofedericonicolas simpleencodingmethodforsigmadeltaadcbasedbiopotentialacquisitionsystems AT spinellienriquemario simpleencodingmethodforsigmadeltaadcbasedbiopotentialacquisitionsystems |
| bdutipo_str |
Repositorios |
| _version_ |
1764820447725092865 |