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BOS1901-KIT
User Guide
This image shows the differential voltage between both terminals of the piezoelectric actuator during a
press event and feedback. On this scale it is impossible to see the details of the press event because it
occurs at much lower voltages and over a longer period.
Figure 29: Sensing algorithm: flow chart.
In the following capture, the voltage was scaled down to a few volts and the timescale increased so it is
possible to see the increase in voltage caused by the force applied on the piezo actuator. We can see
where the various parameters of the algorithm apply. Here is an example with 1.3 V threshold and 10 ms
hold time:
Figure 30: Sensing algorithm: threshold, hold time and feedback.
BT001DDK04.01 – Issue 1
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