Luster Deployment in Hogisland - PowerPoint PPT Presentation
1 / 46
Title:
Luster Deployment in Hogisland
Description:
Luster Deployment in Hogisland – PowerPoint PPT presentation
Number of Views:46
Avg rating:3.0/5.0
Title: Luster Deployment in Hogisland
1
Luster Deployment in Hog-island
2
Hog-island
3
Hog-island
- Hard to access
- Limited visiting time
- No power
- Lack of stable communication with outside world
- Harsh environment
4
Deployment goal
- A sensor system to collect light intensity data
under shrub thicket for Environmental and
Ecological Research. - reliable data collection
- remote data uploading
- In-network data backup
- Deployment assurance
5
Hardware
- Sensor nodes
- Storage nodes
- SeeMote
- Wifi communication devices
6
Sensor nodes
- 7 light sensors, bound with nails,
cable-connected to the motes. - Pelican box
- C cell battery
- dehumidizer
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
Storage nodes
- removable SD/MMC card,
- Work on SPI mode
- two D cell battery
- Some data
- Bandwidth 1 kpbs
- Average working current 5060mA
12
Seemote
- 128 x 160 pixel color LCD
- A lightweight GUI tinyos library
- A valuable and convenient for deployment time
verification
13
(No Transcript)
14
(No Transcript)
15
WiFi communication device
- Power supply
- Solar cell
- Rechargeable battery
- Heterogeneous power cable
- Wireless communication
- TOSBase
- Stargate
- PCMCIA
- Directional Antenna
- The Station in Hog-island
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
(No Transcript)
27
Current problem
- Unstable power during daytime
- Limited power supply at night
28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
Communication status
- The connection is setup at the second deployment
- Some sensing data are uploaded into the backend
database - Last for only twenty minutes
- Problem
- Stargate and PCMCIA card dont work well
together. - Poor wireless link from the station to the
antenna. - The access point of the station is shut down at
the night.
36
Future solution
- Use Wigate to interface the sensor network and
WiFi network. - Try more powerful antennas.
- Using multi-hop relay.
- In-network data backup
37
Deployment layout
19 sensor nodes with 133 sensors, 5 storage nodes
38
(No Transcript)
39
(No Transcript)
40
(No Transcript)
41
Software component
- LiteTDMA
- SenQ
- Storage manager
- Sensor localization
- Deployment time verification
- Database Query
42
LiteTDMA
- One-hop cluster
- One Master node (TOSBase)
- Several Slave Nodes (sensor node, storage node,
and SeeMote) - Current setting in the system
- Superframe 384 ms
- Slave slot 10 ms
- 30 slave slots
43
LiteTDMA
- Good features
- Time-slot based transmission bring high data
delivery ratio. - Energy efficient
- Time-synchronization and global time
dissemination. - Support to add new nodes.
- On the fly parameter configuration, and reset,
stop, restart. - Statistic collection.
- Future improvement
- Backup master node
- Scalability
44
Storage Manager
- Using storage node to provide in-network backup
- Overhearing message and store the data.
- Coverage assignment
- Configure storage nodes to cover data from
specified sensor nodes. - Different storage policy.
- Writing and flushing policy
- Storage organization policy
45
Sensor Localization
- Mote-level localization and sensor-level
localization - a method similar to spotlight
46
Query
- Database can issue query for storage nodes when
finding data gaps. - Storage nodes support query according to NodeID,
sensorID and the time interval.
Recommended
CrystalGraphics Presentations
