Alternative Load Cell

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Load Cell Alternative Analysis

Current Solution

• Load cell
  • Perfect fit for size requirements
  • Cost: 45 EUR (expensive)
  • Higher precision than required

Tested Alternative

• Piezoresistive Sensor
  • Issues encountered:
    1. Uneven pressure distribution
    2. Non-linear force/resistance response
    3. Limited resolution at high weights

Requirements

1. Must meet size constraints
2. Lower precision is acceptable
3. Cost should be lower than current solution

Question

Is there a more suitable alternative that meets our requirements while addressing the issues found with the piezoresistive sensor?