Power supply for solar power supply wireless sensor network node and power supply method

Abstract

The invention discloses a power supply for a solar power supply wireless sensor network node and a power supply method. The power supply battery comprises a control module, a rechargeable battery controlled by the control module, a solar battery panel, an illumination sensor and a wireless communication module connected with the control module, a voltage / current detection circuit, and a terminal computer in bidirectional communication with the control module. The power supply method comprises the following steps of: inputting a preset value by the terminal computer, storing the preset value in an electrically erasable programmable read-only memory (EEPROM), reading Vflag in the EEPROM, and judging whether the Vflag is equal to 1; when the Vflag is equal to 1, entering a charging mode; and when the Vflag is equal to 0, correspondingly adjusting the sampling period according to the output voltage value of the rechargeable battery periodically detected by the voltage / current detection circuit. The power supply has reasonable design, low cost, low power consumption and reliable working performance, and ensures that the power supply battery can provide as long working time as possible for the wireless sensor node in different states.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor network node power supply, and in particular relates to a power supply and a power supply method for wireless sensor network nodes powered by solar energy. Background technique [0002] In recent years, with the popularity of mobile phones, portable computers and various portable electronic products, people's demand for batteries has increased significantly. As the only source of energy for embedded devices, how to use limited power to provide the highest performance for embedded devices is the main goal of power management in embedded devices. Traditional power management strategies are not ideal for real-time power consumption of the system, battery charging control, charging and discharging discrimination, and battery capacity detection, often resulting in reduced battery life and performance. [0003] At present, the research on the battery is more focused on the development of the ch...

AI Technical Summary

Problems solved by technology

Traditional power management strategies are not ideal for real-time power consumption of the system, battery charging control, charging and discharging discrimination, and battery capacity detection, often resulting in reduced battery life and performance

[0003] At present, the research on batteries is more focused on the development of chargers and the improvement of power conversion efficiency, and there are fewer studies on battery charging control strategies and charging state detection.

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