Targeted Feature Recognition Using Mechanical Spatial Filtering with a Low-Cost Compliant Strain Sensor

摘要: A tactile sensing architecture is presented for detection of surface features that have a particular target size, and the concept demonstrated with braille pattern. The approach akin to an inverse mechanical profilometry. structure constructed by suspending stretchable strain-sensing membrane over cavity. moved surface, signal generated through spatial filtering if feature small enough penetrate into This simple design tailorable can be realized standard machining or 3D printing. Images produced even low-cost compliant sensor. In this work disposable elastomeric piezoresistive strain sensor was used cylindrical “finger” part groove having width corresponding dot size. model developed help understand working principle guide finger design, revealing amplification when cavity matches new has advantages being easily reconfigured variety problems retrofitted wide range robotic hands, as well compatibility many types.