Patent
Energy harvesting system
Chien-Ying Chen,Pai Hsiang Chou +1 more
TLDR
In this paper, an energy harvesting system includes an EH unit for converting energy from a natural energy source into an electrical power signal; a power point tracking unit including a current tracing module capable of detecting a current of the electrical power signals; and a boundary control module for generating a switch control voltage signal with reference to the maximum power point.Abstract:
An energy harvesting system includes: an energy harvesting unit for converting energy from a natural energy source into an electrical power signal; a power point tracking unit including a current tracing module capable of detecting a current of the electrical power signal, and a boundary control module; a microcontroller including a voltage detecting module capable of detecting a voltage of the electrical power signal, and a computing module for determining a maximum power point with reference to the voltage and the current of the electrical power signal, the boundary control module generating a switch control voltage signal with reference to the maximum power point; a storage unit capable of storing energy; and a pulse frequency modulation regulator for converting the electrical power signal into an intermediate signal with reference to the switch control voltage signal for subsequent storage of energy of the intermediate signal in the storage unit.read more
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Patent
Wireless coded communication (WCC) devices for tracking retail interactions with goods and association to user accounts
TL;DR: In this paper, the authors presented a system for tracking items in a store for processing a cashierless purchase transaction, which includes detecting proximity of the user to a shelf having an item and detecting interaction data for the item on the shelf of the store by the user.
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Wireless sensor network wake-up range extension via energy harvesting and edge devices
Wendi Heinzelman,He Ba,Li Chen +2 more
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Patent
Power efficient communications
Edgar H. Callaway,Paul E. Gorday +1 more
TL;DR: In this article, the authors propose a power-efficient communications protocol for data transmission and reception at a data rate determined, at least in part, by the available output power of a power source.
References
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Patent
Safety mechanisms, wake up and shutdown methods in distributed power installations
TL;DR: In this paper, a distributed power system including multiple DC power sources and multiple power modules is described, where an inverter converts power input from the serial string to output power and a signaling mechanism between the inverter and the power module is adapted for controlling operation of the power modules.
Patent
Systems and Methods for Providing Maximum Photovoltaic Peak Power Tracking
TL;DR: In this article, a micropower maximum power point tracker (MPT) is proposed for low power applications to maximize the power output for a solar-power cell array. But, it is not suitable for use in low-power applications.
Patent
Vibration mediated networks for photovoltaic arrays
TL;DR: In this paper, a system and method to optimize the overall power output of a photovoltaic solar array is presented, where the solar panels are connected to software adjustable power optimizing devices, which in turn are connected with a mesh network with individual router devices.