Simple and Low-Cost Analog Tactile Sensor for Robot

Tactile sensor based on pressure change measurement is simple and cheap solution when magnitude of force is required. The touch sensor works on the principle of pressure change caused by deformation of flexible spherical membrane. The magnitude of the force is converted to an analog signal that is easy to process. The resulting sensor is cheap, accurate and a simple signal processing sensor. The sensor is very sensitive. The sensor is also susceptible to noise from environmental conditions unfortunately. The sensor can be adjusted for different load range by changing parameters of the membrane. Furthermore, the electronics can be placed at a greater distance from the sensor by guiding the medium (air) through rigid pipe, which is preferable especially in applications where there is little space.