Short-Time Fourier Transform and Decision Tree-Based Pattern Recognition for Gas Identification Using Temperature Modulated Microhotplate Gas Sensors

<table class="table-group" id="tab10"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Sawtooth</td><td class="align_center">Triangle</td><td class="align_center">Rectangle</td><td class="align_center">Sinusoid</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">FFT</td><td class="align_center">77.5</td><td class="align_center">52.08</td><td class="align_center">79.17</td><td class="align_center">58.33</td></tr><tr><td class="align_left">DWT</td><td class="align_center">93.75</td><td class="align_center">94.79</td><td class="align_center">93.75</td><td class="align_center">93.75</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The recognition accuracy when FFT and DWT approaches are used (%).

Journal of Sensors

tab10

Table 10

Table 10: Short-Time Fourier Transform and Decision Tree-Based Pattern Recognition for Gas Identification Using Temperature Modulated Microhotplate Gas Sensors 

Table 10 | Short-Time Fourier Transform and Decision Tree-Based Pattern Recognition for Gas Identification Using Temperature Modulated Microhotplate Gas Sensors 