Ultra Low Power Wake Up Radio for Wireless Sensor Network
Wireless sensor networks (WSN) have been recognized as a fundamental enabling technology for a large variety of cyber-physical systems (CPS) applications in environmental monitoring, healthcare, security, and industrial domains, among others, due to the flexible distribution of WSN devices. Each device embodies a networked node that integrates computing, wireless communication, power management and sensing capability in order to collect and process data from sensors, generally collaborating to coordinate activities. Battery-powered nodes are faced with limited life-expectancy, whereby energy is considered a limited and precious resource. Thus, power consumption is a critical problem in many WSN scenarios where the network is expected to operate for several months, extending to many years. To achieve this goal, efficient energy management strategies must be devised at the device level (through selecting optimal circuits), and at the network level (through the implementation of optimized medium access control, routing and data collection and dissemination schemes) to extend the network life-time as much as possible. Traditionally, wireless transceivers have been reported to be the primary consumer of energy, and many power management policies have been investigated and applied to efficiently manage the radio and wireless communication. The usage of the low duty cycle data acquisition and sleep-wake up protocol can considerably increase the lifetime of a node As a sensor node can be supplied for only few hours at 100% duty cycle, these optimization techniques are essential. An option is to use an adaptive duty cycle to increase the acquisition rate only if there is some interesting event, such as value is over, or under a given threshold. The wake-up radio receiver circuit can efficiently wake up the node when such a request is sent from a remote host. Ultra low power radio wake up receiver can reduce the power consumption of the system while still keeping its response time low. Another role of the wake-up radio is that based on network intelligence to select a specific harvester unit to be used at a given time in order to maximize efficiency.
The main objective of this project is work in hardware and software with ultra low power wake up radio technology. The candidate student will work with specific radio transceiver to send commands and wake up packet that will be listening from the wake up radio receiver. The hardware part will include also a redesign of part of the wake up reciever to increase the range or add digital part to perform an addressing detector. The software part will be both in transceiver and receiver and it could include . Measurements on the performance of the system will be performed from the students in order to evaluate the distance, power consumption, reliability, functionality.
- Looking for 1/2 Semester/Master students
- Supervisors: Michele Magno
- C Language
- Interest in Computer Architectures at system level
- 20% Theory
- 60% Implementation
- 20% Testing