Electromechanical valve sequencing for fluid mixture dispensing devices

A method for a fluid mixture dispensing device, the method comprising:

• actuating, by a controller of the fluid mixture dispensing device, at least two valves from a set of electromechanical valves;
• dispensing, by the at least two valves and in response to the actuating, at least two ingredients from a set of ingredient reservoirs associated with the at least two valves to a mixing area;
• measuring, using a current sensor, a current draw of the electromechanical valves in the set of electromechanical valves;
• sampling the current draw from the current sensor;
• and
• determining a volume dispensed through each valve based on the current draw;
• wherein the set of electromechanical valves:
• (i) are in a one-to-one correspondence with the set of ingredient reservoirs, and (ii) fluidly connect the set of ingredient reservoirs and the mixing area during a respective set of dispense times;
• and
• wherein the controller actuates the at least two valves in sequence with partially overlapping dispense times and without overlapping opening times.

A fluid mixture dispensing device comprising:

• a mixing area;
• a set of ingredient reservoirs;
• a set of electromechanical valves, wherein the set of electromechanical valves:
• (i) are in a one-to-one correspondence with the set of ingredient reservoirs, and (ii) fluidly connect the set of ingredient reservoirs and the mixing area during a respective set of dispense times;
• a power supply that provides power to the electromechanical valves;
• a pneumatic system that receives power from the power supply;
• and
• a controller programmed to actuate at least two valves from the set of electromechanical valves to dispense, to the mixing area, at least two ingredients from the set of ingredient reservoirs associated with the at least two valves;
• wherein the controller is programmed to actuate the at least two valves in sequence with partially overlapping dispense times and without overlapping opening times;
• and
• wherein during the dispense of the at least two ingredients, the ingredient reservoirs in the set of ingredient reservoirs are pressurized by the pneumatic system and the pneumatic system does not draw any power from the power supply.

A method for a fluid mixture dispensing device, the method comprising:

• providing power, by a power supply, to a set of electromechanical valves;
• providing power, by the power supply, to a pneumatic system;
• actuating, by a controller of the fluid mixture dispensing device, at least two valves from the set of electromechanical valves;
• and
• dispensing, by the at least two valves and in response to the actuating, at least two ingredients from a set of ingredient reservoirs associated with the at least two valves to a mixing area;
• wherein the set of electromechanical valves:
• (i) are in a one-to-one correspondence with the set of ingredient reservoirs, and (ii) fluidly connect the set of ingredient reservoirs and the mixing area during a respective set of dispense times;
• wherein the controller actuates the at least two valves in sequence with partially overlapping dispense times and without overlapping opening times;
• and
• wherein, during the dispensing of the at least two ingredients, the ingredient reservoirs in the set of ingredient reservoirs are pressurized by the pneumatic system and the pneumatic system does not draw any power from the power supply.