Background:
The Internet of Things (IoT) devices consist of a microcontroller unit for
data processing, a low-power wireless radio module for data transmission, and various sensors for
data collection. The sensor nodes and processing devices used in the Internet of Things are
resource-constrained, with power consumption and security being the two most critical parameters.
Objective:
This paper addresses the challenges of power consumption and security in IoT scenarios.
It presents a low-power and secure heterogeneous multicore sensing architecture designed for lowpower
IoT and wireless sensor networks. The architecture comprises a sensing and control
subsystem, an information processing unit, and a wireless communication module.
Methods:
The architecture uses a microcontroller unit based on ARM Cortex M4, a low-power
sub-1 GHz RF-compliant communication radio, and a few sensors. The proposed architecture has
been implemented and tested using the Contiki Operating System.
Results:
The implemented sensor node architecture demonstrated performance efficiency, lower
energy consumption, and higher security.
Conclusion:
By leveraging efficient power management, data transmission strategies, and
cryptographic security, the architecture contributes to developing energy-efficient and secure IoT
devices.