Abstract:
In this Paper, we enhance the performance of Wireless Sensor Networks (WSNs) by optimizing the Wake-up capabilities within a passive radio-triggered wakeup circuit and then used its applications to manage the power consumption of the WSNs. The architecture of our proposed circuit manages the radio power consumption of WSN by harvesting energy from the radio signals and making the radio-triggered hardware sends a wake-up signal to the microcontroller (MCU) of the node. This harvest process takes only 15μs or less to produce wake-up signals within the wake-up circuit and prolongs the lifetime of the WSN nodes. In addition, the proposed circuit receives the RF signal of the network controller through the antenna node and produces an output voltage (VOLDC) by its rectifier module so that this voltage produces direct current DC of 250 mV with the received power of 0.85uW (-13.85dBm). Most importantly, the proposed circuit can produce an output triggered voltage (VOLTG) by its module of LTC1540 –Nano-power Comparator which works as an amplifier (VOLDC) and only needs 0.3μA of energy for the setting of the threshold detector value within the long distance of 100m or more and radiation source of 2W in free-space. The simulation results demonstrate that the proposed circuit can produce VOLDC and VOLTG to trigger the wake-up signal of MCU within the long distance and low duty cycle as well as this circuit can identify the synchronization on WSNs.
