[TDX2] Future WSN Sensor Technology
Transcript of [TDX2] Future WSN Sensor Technology
Outline
• Overview – How Can We Build Better Sensors?
• Embedded Sensors
• A New WSN Concept
• Summary
A New WSN Concept
Channel
n-1
n+1
x2
Tran
scei
ver
Sensor
Sensor Node #n
High-QCoupled
Interrogator
fo
2fo
A New WSN Concept
Interrogator/CommunicationsUVM
Field Testing, Sensor/TransceiverUSF
Sensor Node
fo 2fo
- Humidity- pH
time
f (H
z)
node #
f o(H
z)
12
3
Concrete Structure
1 2 3
A New WSN Concept
FDR
Transmitting SetupTransmitting Setup
Receiving Receiving AntennaAntenna
2.6 GHz
1.3 GHz
A New WSN Concept
RXAntenna
TXAntenna
Stimuli-responsive sensor varactor to control frequency response of narrowband micromechanical multiplier
fo 2 · fo
+
-
Variation of node response based on sensor state
20nm Nitride Gap
Electrode
Disk Resonator
After HF40min Release
nitride etched
away at the edge only
Summary
• All WSN applications present challenges, and some may not be feasible with current‐day technology
• Gain from optimizing individual pieces of a system eventually goes to zero systems‐centric thinking can reveal unique solutions
• In the advanced WSN concept discussed here, where will the most energy be used?
muse