NDLI: Open platform, 32-channel, portable, data-logger with 32 PGA control lines for wearable medical device development

Content Provider	IET Digital Library
Author	Gargiulo, G. D. Bifulco, P. Cesarelli, M. Ewan, A. Mc Wabnitz, A.
Abstract	A compact isolated low-power 32-channel 16-bit data-logging system around an NXP ARM processor (LPC1768) and four of the linear technology octal analogue-to-digital converters (ADCs) LTC1857/58/59 is designed. The system requires only 250 mA when powered at 5 V to run at full power (including a capacitive 2.8 inch touch-screen display and 32 Gb SHDC SD memory card). The sample rate is configurable up to 1 k SPS per channel as well as voltage dynamic input up to ±10 V; additionally, 32 chip select lines (SPI protocol) individually addressable and controllable while sampling to configure user-designed programmable gain amplifiers (PGAs) are available. Collaboration is being sought to improve the software capabilities, particularly to enrich the very basic user interface and to add wireless connectivity. The code is available (under the GPL licence) at our repository, the gerber file to reproduce the PCB is available (on the As-Is basis) on request. The galvanic isolation between the power supply data connection and ADC channels makes the data-logger also compatible with the main powered PCs, hence it is suitable for the implementation of medical devices at least for the prototyping and initial testing stages.
Starting Page	1127
Ending Page	1129
Page Count	3
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 16, Jul (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.1791
Journal	Electronics Letters
Publisher	The Institution of Engineering and Technology
Publisher Date	2014-07-17
Access Restriction	Open
Rights License	Creative Commons Attribution-Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/)
Subject Keyword	A/D And D/A Convertor ADC ADC Channel Amplifiers Analogue-Digital Conversion Biomedical Electronics Biomedical Equipment Current 250 MA Data Loggers Display, Recording And Indicating Instruments Galvanic Isolation GPL Licence Linear Technology Octal Analog-to-digital Converter Low Power Electronics Low-power Portable Data-logging System LPC1768 LTC1857-58-59 Microprocessor Chips Microprocessors And Microcomputer NXP ARM Processor PCB PGA Control Line Power Electronics Power Supply Power Supply Circuit Power Supply Data Connection Printed Circuit Programmable Circuit SHDC SD Memory Card SPI Protocol Storage Capacity 32 Gbit Supervisory Circuit Touch-screen Display User-designed Programmable Gain Amplifier Voltage 5 V Wearable Medical Device Development Word Length 16 Bit
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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