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Team Thermasense
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Wires can introduce extra problems into the system. ... Small gage thermocouple wire. Transmission through the craft. Near field magnetics ... – PowerPoint PPT presentation
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Title: Team Thermasense
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Team Thermasense
- Thermal Wireless Sensor
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Where Does Thermasense Fit In?
- Re-Entry problems
- Space vehicles are heavily instrumented.
- Wires can introduce extra problems into the
system. - High electromagnetic interference environment.
- Pressurized hull in many instances.
- Our solution is the wireless transmission of data.
3
Where can it go?
- Next lunar space vehicle (Orion)
- Re-entry probes
- Test equipment
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Project Goal
- Design and build a wireless sensor system.
- Test the system in a plasma environment.
- Measure the internal temperature of the TPS
(Thermal Protection System).
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Typical Thermal Protection System (TPS)
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Scope
- Primary Focus
- Wireless transmission of multiple temperature
signals. - Secondary Considerations
- Thermocouple calibration and amplification
circuit - Data acquisition and storage
- Power
- Transmission through pressurized hull.
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How do we transmit the data?
- - Infrared (IR)
- No line of sight
- - Near Field Magnetics
- No off the shelf components available
- - Radio waves (RF)
- Best choice for our problem
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Obstacles for data transmission
- Interference from the plasma environment.
- Can not communicate through the hull.
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Overcoming Interference
- Noise filtering
- Use digital signals
- Board layout
- Twisted pair thermocouple wires
- Small gage thermocouple wire
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Transmission through the craft
- Near field magnetics
- RF through the thin part of the hull. (Not
likely)
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Testing
- Measure performance reliability
- Accuracy of data
- Response time
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Testing Issues
- How do we test at 1700 Degrees Celsius?
- Will our components melt?
- How do you mount TPS Materials
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X Jet Testing
- Interference
- Signal strength
- Battery life
- Power consumption
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Future Work
- Data Storage
- Integration of other sensor types
- How do we power the modules for long term
missions?
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Project Risks and Challenges
- Transmission through the Craft
- Transmission through a high interference
environment - Protection of wires and circuits at high
temperatures - Meeting required size specifications
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Questions?
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