Figure 5.

The relationship between the resistance of the temperature sensor and the applied pressure. The inset is a field photograph of the pressure test and a schematic diagram of the application of pressure on the sensitive area: (a) the resistance change when applying pressure to the whole sensitive area of the sensor, from 1 N to 10 N; (b) the resistance change when applying pressure only on a point, from 1 N to 10 N; (c) the resistance change when applying pressure on a strip area by a wedge, from 1 N to 10 N.