IoT is hypothetically to be deployed everywhere and to be accessed anywhere at any time, such a remarkable contribution towards the reliable solutions for ease of customers on the go. This emerging technology has a major obstacle which is creating hurdle for technological advancement for upcoming years. The limited life span of rechargeable batteries for IoT devices and applications made this ubiquitous technology on the verge of inadequate battery power. The only viable solution for prolonging battery life of huge interconnected network of devices is to harvest ambient energy sources from surroundings. This paper emphases on brief overview regarding harvesting technologies to power up the IoT devices, the related approach regarding design considerations of an IoT module and the power management as the key component inside any energy harvesting based IoT system.

This paper presents a simulation-based study for characterizing and analyzing the performance of a commercially available thermoelectric cooler (TEC) as a generator for harvesting heat energy along with a commercial-off-the-shelf (COTS) power management integrated circuit (PMIC); LTC3108. In this model, the transformation of heat was considered in terms of an electrical circuit simulation perspective, where temperature experienced by TEC on both cold and hot sides was incorporated with voltage supply as Vth and Vtc in the circuit. When it comes to modeling a system in a simulation program with an integrated circuit emphasis (SPICE) like environment, the selection of thermoelectric generator (TEG) and extraction methods are not straightforward as well as the lack of information from manufacturer’s datasheets can limit the grip over the analysis parameters of the module. Therefore, it is mandatory to create a prototype before implementing it over a physical system for energy harvesting circuit (EHC) optimization. The major goal was to establish the basis for devising the thermal energy scavenging based Internet of Things (IoT) system with two configurations of voltage settings for the same TEG model. This study measured the data in terms of current, voltage, series of resistive loads and various temperature gradients for generating the required power. These generated power levels from EHC prototype were able to sustain the available IoT component’s power requirement, hence it could be considered for the implementation of IoT based applications.

MATEC Web of Conferences, open access proceedings in Materials science, Engineering and Chemistry

Over the years, hand rehabilitation devices have advanced drastically in terms of technological trends but due to the complex structure and intricateness of the human hands, it imposes a great difficulty on the development of an efficient hand rehabilitation devices. This paper demonstrates the trends and technologies associated with upper limb rehabilitation specifically for hand and wrist motion. The state of the art devices has been classified and categorized in terms of therapy, mechanical structure and control strategy. This paper gives an outlook regarding the various available robotic technological advancement in terms of mechanical design and followed by our own hand and wrist rehabilitation device along with its features.