Research on the Model of Pressure Sensor used in PNS Based on Micro Jet 3DP

ABSTRACT

In this paper, a low cost, printable pressure sensor model is presented. The pressure sensor could be used in personal navigation system which was designed based on micro jet fabrication structure. Micro jet printing and line patterning methods have been used to fabricate polymer resistors and field effect transistors on flexible substrates. A prototype sensor was designed, and the models of mechanical structure and digital fabrication was also given, fabricated and tested with standard experimental measurements. Results verify that the pressure sensitivity can be measured for both frequency and minimum power level difference in good performance. The dynamic performance of pressure sensor was also tested by micro jet printing on to flexible substrates including paper, with high resolution in just seconds. General structure of our proposed printable pressure sensor is detailed in the next section. Some resistors in pressure sensor were divided into two parts getting high sensitivity. The flexible spots and the elastic models for wearing substrate were given. In the experiment the flexibility, sensitivity and dynamic performance were tested which were in acceptable level.

Keywords:

Three dimension print (3DP), Direct digital manufacturing (DDM), Printable sensor, Personal navigation system, Elastic model.