Biomedical Engineering Reference
In-Depth Information
Figure 4.18
The scheme of top and bottom parts (dimensions are in mm)
The main advantage of using an array of sensing modules (instead of a single module) is
to register the stress distribution. The profile of stress distribution is especially meaningful
when a disruptive object, such as a lump, is embedded in bulky soft tissue.
4.2.2 Finite Element Modeling
Before performing experiments on the sensor, a finite element modeling of MEMS sensor
was carried out. The results of the simulation helped to understand the behavior of the
sensor under given loads and also the PVDF film response to the loadings. Figure 4.19
shows a meshed model of the sensor. In order to reduce the number of elements, the
Figure 4.19
The meshed FEM model of the MEMS tactile sensor
