Patent ID: 8565925

Claim:
A fluid dispensation system comprising: a fluid additive injection system; a fluid injection control system coupled to the fluid additive injection system, configured to control a quantity of fluid additive injected into the fluid dispensation system; and a fluid dispensation device comprising a sprinkler or a drip irrigation nozzle coupled to the fluid additive injection system, configured to dispense a fluid from the fluid dispensation system when activated; wherein the fluid additive injection system comprises: a valve coupled to a pressurized fluid supply, configured to receive pressurized fluid from the pressurized fluid supply, and to open in response to a first control signal, and to close in response to a third control signal; a piston coupled to the valve, configured move from an initial position and to inject fluid additive into the fluid dispensation system in response to pressurized fluid from the pressurized fluid supply passing through the valve; and a piston position sensor coupled to the piston, configured to send a second control signal to the fluid injection control system when the piston has injected the quantity of fluid additive into the fluid dispensation system; and the fluid injection control system having computer program instructions and executing the instructions to: detect an activation of the fluid dispensation device; determine the quantity of fluid additive based upon an identity of the fluid dispensation device; transmit the first control signal to the valve in response to the activation of the fluid dispensation device, wherein the first control signal causes the valve to open; receive the second control signal from the piston position sensor; and transmit a third control signal to the valve in response to the second control signal, wherein the third control signal causes the valve to close, releasing the pressurized fluid, and allowing the piston to return to the initial position.