* Larry: studying statistics.
* Chris: Requirements for data acquisition prototype. Work to
be done on specific functional requirements. Need to consolidate
the subprojects such as sensors so we get a better sense of what
we've done.
Bob: Encountered an issue in Chronobiology which is that they
cannot find the old articles. E.g. there are two contrarian positions
in Chronobiology: 1) Halberg - application of chronobiology to
medicine, 2) theoretical chronobiology. He has these questions:
1) how much information can you get from one patient and 2) can
you add up the information from multiple people. 3) We have made
a tacit commitment to transform analogy information to digital
information and he isn't sure that is wise. Analog circuitry
doesn't need as much power because CMOS requires bursts. Analog
requires integrators and differentiators, which were developed
with great degree of precision and elegance. Analog might require
a factor of 10 or 100 less.
Chris: Carl & Dave found that amplifying the signal wasn't
an issue because the got a larger signal by moving the sensor
from the elbow to the wrist.
Jim: We found it we got a larger signal from the cubital (inside
the elbow) from the inside from the IEEE. Jim will provide us
with the citation.
* Jinm says it is simple to get a good blood pressure measurement
from our equipment.
Data Acquisition Prototype: Project & Systems Requirements
- Chris Adams
www.phoenix.tc-ieee.org/014_Systems_Architecture_and_Engineering/presentations/Project%20Vision%202008-07-13.ppt
This document can be found in the design portion of the systems engineering architecture
Phoenix website.
Subprojects
System Architecture
Design
Data Acquisition.
-- Project Vision 2008-07-13.ppt
Vision: Help us learn about:
* Data acquisition devices, hardware and software co design, partition
systems into subsystems, allocating system requirements into subsystems,
learn about embedded software architecture options, hardware options,
acquiring hardware components, testing embedded software.
Architecture - basic technology choices.
- Hardware architecture
- HW component selection, embedded software architecture.
- SW language selection
- Cross- platform development tools
System Vision
* Data acquisition device
- Collects analog signals from 2 piezoelectric film sensors
- Measurement Specialties STDI-028K.
- Converts analog signals to digital signals.
- Embedded analytics
-- Calculates (BP, Heart Rate, Blood Flow).
* Embedded data storage
- timestamps each acquired and calculated value
- Preserves acquired values beat-to-beat.
- Preserves calculated values (how often)
- Preserves up to x data.
* Device allows ambulation during use
- At least carriable
* Electrically self-contained
- Does not rely on external power source.
Major Out-of-Scope Capabilities
- Capacity for 67 days of data
- Device calibration
design accuracy will not be addressed but measurement accuracy
will be compared.
- Patient alerts
- Localization outside of U.S.
Use Cases
* Technician connects device to wearer
...
Algorithms.
Functional Requirements
* Downloaded Data
- Head
- Body
- Tail
Interfaces
* Outgoing Downloaded XML
* Physical connectors. USB.
This page is maintained by Ellis S Nolley. It was last updated on 24 August 2008.
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