Vital scanner

The problem

A compact ECG device was to be developed with only 2 instead of 3 electrodes and a very high sampling rate of 1,067 Hz.

For algorithmic evaluation, the signals had to stay as undistorted as possible.

What came out of it

• The customer's unit cost is 92% lower than the ECG device used previously.

• The data is also higher-resolution and therefore better suited to algorithmic analysis.

• A person's state of health becomes visible within seconds.

PPG sensor: vital signs from the fingertip

As a follow-up development, a high-resolution PPG sensor was built in the familiar clip form of common SpO2 devices. Measurement is contactless at the fingertip - no electrode patches, no prior knowledge required. The internals are a complete new development with a multi-colour high-resolution light sensor that delivers substantially more signal detail than off-the-shelf pulse oximeters.

Data quality correlates at around 80% with ECG for vital measurement. Because the measurement takes place at the finger arteries, cardiovascular state can also be made visible. Since every PPG profile is individual, the sensor could additionally serve as a biometric identifier.

The overarching research question: can the health status of all participating employees in a company be captured quickly and simply - as a genuine benefit for the individual and at the same time as a tool to reduce sick leave?

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