Transcript PPT

A Wearable Wireless Sensor Platform
for Interactive Dance Performances
PERCOM 2006
Chulsung Park and Pai H. Chou
Center for Embedded Computer Systems
University of California, Irvine
Irvine, CA 92697-2625 USA
{chulsung,phchou}@uci.edu
Yicun Sun
Department of Arts-Dance
University of California, Irvine
Irvine, CA 92697-2775 USA
[email protected]
KAIST GSCT 20073746 김환철
Context
1. Statement of the Problem
2. Solution Approach
3. Platform Design
4. Application Example
5. Conclusion
6. Strong, Weak Point
One-line Comment
This paper designed a wearable wireless
sensor platform which is truly wearable,
scalable, able to support to high –
level interactivity in forming wireless
networks for interactive dance performance.
Statement of the Problem
How to develop a wearable wireless sensor platform
for Interactive dance performance?
KEY WORD:
Wearable, Scalable, able to support high-level interactivity
Wearable
• Aspect of Sensor device SIZE
• How to make the smallest wireless sensor node in operation?
Scalable
• Aspect of Networking Capability
• How to network large numbers of wireless sensor nodes while maintaining
a high level of network performance?
High level interactivity
• Aspect of Sensing capability
• How to collect data from multiple types of sensing devices?
Solution approach
Why dance? Art based on human body movement.
KEY WORD:
Wearable, Scalable, able to support high-level interactivity
Wearable
• This platform consists of an ultra-compact and low power wireless sensor n
ode, named Eco and its variants.
Scalable
• The second contribution is in making multiple Eco nodes form a scalabl
e wireless network.
High level interactivity
• Another novelty of this work is multi-modal sensing: It can collect data
not only motion tracking but also physiological signs such as heartbeat
This paper present design details of wearable wireless sensor
platform and applied to an actual interactive dance
performance, titled Dreams in the Forbidden City.
Platform Design
Wearable wireless sensor platform consists of three parts:
3 Parts:
wearable wireless sensor nodes, wireless data aggregators
,wireless interface boards
Wearable wireless sensor nodes
• The activities and physical conditions of a dancer are first sensed and digitized
Wireless data aggregators
• Then, each sensor node wirelessly transmits its data to the data aggregator
Wireless interface boards
• The data aggregator collects and packetizes these data and send them to the wirele
ss interface board
Wearable Wireless Sensor Node- Eco
1. An ultra-compact low-power wireless sensor
node for real-time motion monitoring
2. Currently the world’s smallest wireless
sensor node in operation
•
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it measures 12 × 12 mm2 in surface area, ×4.5mm thick (or
648mm3 in volume) and weighs 1.3 grams without the battery
the original design of Eco has only one two-axial accelerometer
(ADXL202E) and a 125mAh Li-Coin battery (CR1632 [17])
Modified the hardware: a three-axial accelerometer, temperature sensor,
image sensor, light sensor, gyroscope, joint angle sensor, and heartbeat
detector
Changed the Li-Coin battery to a 40mAh Li-Polymer battery (12 ×
10× 3 mm3), which is able to power Eco for more than one hour
Wireless transmitter unit (WT), Acceleration, temperature, and
light sensing unit (ATLS), Image and gyro sensing unit (IGS)
Wireless Data Aggregator, Interface Board
Wireless Data Aggregator, Interface Board
Wireless Data Aggregator
• Collects data from all the sensor nodes through the 2.4GHz
• Transceiver and forms a TCP/IP packet to be sent to interface
board via an 802.11bWi-Fi network
Interface Board
• Receives TCP/IP packets
• Outputs digital/analog output signals fed to the MIDI I/O
board
• When Max/MPS/JITTER output signals, it takes these signa
ls and makes a TCP/IP packet
• That contains a proper destination address and control mess
age
Platform Design – Scalability
Body Network
• The heterogeneous network architecture
• Enables platform to simultaneously monitor the activitie
s multiple dancers, without degradation as the number o
f dancers increases.
• 2.4GHz ISM band radio and TDMA-based MAC protocol,
power level are 250Kbps
Data aggregators on dancers and theater equipment
• linked to the access point of the interface board using 8
02.11b CF wireless card
• 256 data aggregators can be connected, but in practice,
10–16 is more like the proper number
Application Example
How this platform can be applied to an actual interactive
dance performance?
‘Dreams in the Forbidden City
‘ at UC Irvine in May 2005
Conclusion
1. This platform consists of wearable wireless sensor
nodes, data aggregators, and wireless interface
boards.
2. The distinguishing features of our platform are truly wear
able, highly scalable, multi-modal sensing, and
seamless interface capabilities.
Choreographing interactive dance performances
that take full advantage of our platform.
Future work
1. At least tens of dancers will be performing together
2. The dancers’ heartbeats and body temperatures will be
monitored and beats to reflect the dancers’ conditions
on the stage equipment.
Strong Point
1. The effectiveness of this platform by showing
improvements to an actual interactive dance
performance.
(Great: good application about Interactive)
2. Potential to related human body or any movement.
3. Entertainment Technology: Night Club !
Stage Technology: Musical, Concert and so on.
Weak Point
1. Problem- Solution: Focused Wearable
Not sure solution: Scalable, High interactivity
2. A fundamental limitation is to associate the motion data
with the dancers’ identities.
3. Its support for interactivity is also limited, thereby impeding
the choreographer’s creativity
4. Too much exercise for Dancer
5. No originality