328
E.-S. E. Omran
nano system for RPW detection and control. Three main approaches in the proposed
nano system are detection, cure, and control.
3.2.1 Proposed Audio Sensor Architecture
Three different kinds of sounds come from RPW larvae: “eating”, “squealing” and
“moving” have been identified [12]. “The first one corresponds to the characteristic
crunch sound produced when the RPW larvae chew internal palm fibers. The second
one “squealing” is also a characteristic RPW sound, but its cause is not clear” (http://
www.mdpi.com/1424-8220/13/2/1706/htm). Finally, the last one corresponds to the
larvae movement through galleries inside the palm trunk. For the current study, the
first one “eating” was chosen because (1) it is the loudest sound, (2) its frequency
is clearly superior to the other identified sounds, and (3) it is representative of the
RPW larvae feeding actions in the first stages of their evolution. Consequently, this
one is the proper target sound to analyze in our early detection sensor. The main
components of the proposed sensor architecture are as follows (Fig. 3):
• An audio probe, in charge of acquisition of sounds from the RPW, conditioning and
properly amplifying the captured audio signal, making it suitable to be processed
by the detection sensor.
• A low-power processor and supply, that will be able to run and “process the sound
captured by the audio probe and determine the RPW presence” (http://www.mdpi.
com/1424-8220/13/2/1706/htm).
Fig. 3 A prototype block diagram for the proposed RPW detection system
E.-S. E. Omran
nano system for RPW detection and control. Three main approaches in the proposed
nano system are detection, cure, and control.
3.2.1 Proposed Audio Sensor Architecture
Three different kinds of sounds come from RPW larvae: “eating”, “squealing” and
“moving” have been identified [12]. “The first one corresponds to the characteristic
crunch sound produced when the RPW larvae chew internal palm fibers. The second
one “squealing” is also a characteristic RPW sound, but its cause is not clear” (http://
www.mdpi.com/1424-8220/13/2/1706/htm). Finally, the last one corresponds to the
larvae movement through galleries inside the palm trunk. For the current study, the
first one “eating” was chosen because (1) it is the loudest sound, (2) its frequency
is clearly superior to the other identified sounds, and (3) it is representative of the
RPW larvae feeding actions in the first stages of their evolution. Consequently, this
one is the proper target sound to analyze in our early detection sensor. The main
components of the proposed sensor architecture are as follows (Fig. 3):
• An audio probe, in charge of acquisition of sounds from the RPW, conditioning and
properly amplifying the captured audio signal, making it suitable to be processed
by the detection sensor.
• A low-power processor and supply, that will be able to run and “process the sound
captured by the audio probe and determine the RPW presence” (http://www.mdpi.
com/1424-8220/13/2/1706/htm).
Fig. 3 A prototype block diagram for the proposed RPW detection system