Mal

1
SensoNor TPMS sensors
Headline SensoNor Date
Roy Grelland 16 October 2003
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Contents

• TPMS history
• Challenges
• Current systems structure
• Technology base
• Key success factors
• Trends
• Summary

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TPMS history

• Technology established in mid 60s
• First TPMS sensors supplied in 85
• Started supplying current generation of sensors
  in 97
• Performance/handling driven EU market
• Legislation driven US market

4
Challenges

• Environment
• Temperature range
• Accessability (no service over life)
• Volume production
• Customer awareness (will the end user pay for
  this?)

5
Current systems structure
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Technology base

• Single Sided Bulk Micromachining
• Piezoresistive
• Cantilever beam accelerometer
• Transfer molding
• CMOS signal conditioning/interfacing

7
Key success factors

• Reliability
• Reliability
• Media compatibility
• Power consumption
• Application knowledge
• Known/established technology

8
Trends for current systems

• Cost
• Legislations
• Increased integration level ( cost)
• Batteryless

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Trends in broader perspective

• More parameters to be measured
• Currently, P, T, V and A
• Future Vibration, x,y,z A, Force, Friction,
  .....
• Integrate with Electronic Stability Control,
  other systems.
• Intelligent Tyre
• Customer base changes
• Tier 1s
• Wheel module mfc.
• Part of larger systems
• Tyre mfc.