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Sensing Baby Kicks

ipv1

I have made a belt for sensing when our unborn child kicks from the inside. This is useful for tracking activity and health of the baby. In my current configuration, I am using a piezoelctric sensor strip but there are a few issues.

  1. The strip is small and cannot cover a large surface area.
  2. It will not discriminate between kicks and movement caused by the mother herself.


I was able to condition the signals and send them over BTLE but the sensor is an issue.

Can anyone suggest? Thanks.

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  • Interesting sensor challenge.

    Assuming the kicks generate a different spectrum of accelerations than a movement, perhaps an accelerometer or microphone would provide an easier signal to analyze. (Low-cost Piezo sensors generally have a resonant frequency that make spectral analysis difficult)

    Another method might be to use a different sensor to detect when mother is moving and ignore the kick sensor at these times. This sensor would be mounted closer to her muscles and further from the baby. It could even use EMG sensors (electromyography).

    Doug

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  • Interesting sensor challenge.

    Assuming the kicks generate a different spectrum of accelerations than a movement, perhaps an accelerometer or microphone would provide an easier signal to analyze. (Low-cost Piezo sensors generally have a resonant frequency that make spectral analysis difficult)

    Another method might be to use a different sensor to detect when mother is moving and ignore the kick sensor at these times. This sensor would be mounted closer to her muscles and further from the baby. It could even use EMG sensors (electromyography).

    Doug

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