B6.3 - A Simple, Sturdy and Cheap Sensor for Distance and Force in Spatially Constrained Environments

St. Eibl, D. Plohmann, G. Ackermann, Ch. Meurer, H.-J. Möstl, M. Huber & H. Steigerwald
Coil springs show a well-defined relation between externally applied force and spring length, the spring rate. Thus, if one of these parameters is known, the other parameter can be calculated easily. Measurement of either of these two parameters using intrinsic parameters, like DC and AC electric resistance, is not a new idea and bears the potential to turn the coil spring into a promising sensor. While the idea of making a coil spring sensor is...