Self-charging water usage monitor, systems, and methods

A water usage monitor comprising:

• a housing having:
• a fluid flow path;
• a fluid inlet in fluid communication with the fluid flow path and configured to facilitate fluid communication between a fluid source and the fluid flow path;
• a fluid outlet in fluid communication with the fluid flow path at an end of the fluid flow path opposite the fluid inlet, the fluid outlet facilitating outflow of fluid from the fluid flow path to an exterior of the housing;
• and
• a dry housing interior fluidly isolated from the fluid flow path;
• a power generator positioned at least partially in the fluid flow path, the power generator configured to generate a voltage when fluid flows through the fluid flow path from the fluid inlet;
• at least one sensor positioned at least partially within the dry housing and configured to measure at least one characteristic of a fluid flowing through the fluid flow path;
• and
• a signal generator operably connected to the power generator and to the at least one sensor, the signal generator configured transmit signals from the power generator and from the at least one sensor to a remote processor;
• wherein the power generator is configured to power both the at least one sensor and the signal generator in response to fluid flow through the fluid flow path, wherein the power generator is configured to output signals usable for calculating flow rate of fluid through the flow path, and wherein the power generator is configured to generate a voltage indicative of fluid flow rate through the fluid flow path;
• and
• a controllable valve that is controllable into at least an open configuration and a closed configuration via remote signals.