Solar energy power supply circuit for wireless sensor network node

Abstract

The invention discloses a solar energy power supply circuit for a wireless sensor network node. The solar energy power supply circuit comprises a solar cell panel, a charging protection circuit, a storage battery, a discharging protection circuit, a DC (direct current)-DC circuit and a load, and is characterized in that the solar cell panel supplies power for the storage battery through the charging protection circuit in a constant voltage mode; the discharging protection circuit is connected with the storage battery in series, and is provided with a reference voltage, when the output voltage of a reference end of the storage battery achieves or exceeds the reference voltage, the storage battery supplies power for the load, and when the output voltage of the reference end of the storage battery is lower than the reference voltage, the storage battery stops supplying power for the load, and discharging protection is carried out; and the DC-DC circuit is connected to the discharging protection circuit in series. The charging protection circuit and the discharging protection circuit of the solar energy power supply circuit have complete functions and simple structures and are low in self power consumption, and the solar energy power supply circuit for the wireless sensor network node has a wide application range.

Description

[0001] technical field [0002] The invention belongs to the power supply technology in the field of wireless communication, and in particular relates to a storage battery charging and discharging protection circuit of a wireless sensor network (WSN) node solar power supply device. [0003] Background technique [0004] The wireless sensor network with modern significance has broad application prospects in the field of large-scale remote environmental monitoring due to its own characteristics. However, the power energy carried by the network nodes is limited, and the deployment area is large and the distance is long. It is unrealistic to replace the battery to supplement the energy. Using solar panels to charge the node battery has become one of the feasible methods to realize the continuous energy supply of the node. The charge and discharge protection circuit of the battery can not only ensure the service life of the battery, but also prolong the life cycle of the entire ...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of complex solar charge and discharge protection circuits, high energy consumption, and low charging efficiency of existing wireless sensor network nodes, the present invention provides a solar charge protection circuit and a storage battery discharge protection circuit that are simple and easy to implement and have low energy consumption.

Images