Product level detection apparatuses and systems for fluid dispensers

A system comprising:

• a fluid dispenser comprising:
• a drive assembly configured to receive a cartridge that includes a reservoir for fluid and a nozzle assembly, wherein the reservoir comprises a main body portion and a nozzle portion of reduced volume compared to the main body portion, wherein the nozzle assembly is proximate the nozzle portion of the reservoir, wherein the drive assembly further includes a motor that operates to cause the nozzle assembly of the cartridge to cause dispensing of fluid from the reservoir;
• a first fluid detection sensor positioned proximate the main body portion of the reservoir and configured to detect fluid in the main body portion of the reservoir;
• and
• a second fluid detection sensor positioned proximate the nozzle portion of the reservoir and configured to detect fluid in the nozzle portion of the reservoir.

A method for monitoring fluid in a fluid dispenser, wherein the fluid dispenser includes a drive assembly configured to receive a cartridge that includes a reservoir for fluid and a nozzle assembly, wherein the reservoir comprises a main body portion and a nozzle portion of reduced volume compared to the main body portion, wherein the nozzle assembly is proximate the nozzle portion of the reservoir, wherein the drive assembly further includes a motor that operates to cause the nozzle assembly of the cartridge to cause dispensing of fluid from the reservoir, the method comprising:

• receiving first fluid detection data from a first fluid detection sensor corresponding to a presence or absence of fluid in the main body portion of the reservoir, wherein the first fluid detection sensor is positioned proximate the main body portion of the reservoir and configured to detect fluid in the main body portion of the reservoir;
• determining, based on the first fluid detection data, that an amount of fluid in the reservoir reached a threshold amount of fluid;
• determining an occurrence of a subsequent dispense, wherein the subsequent dispense occurs after determining that the amount of fluid in the reservoir reached the threshold amount of fluid;
• receiving second fluid detection data from a second fluid detection sensor corresponding to the subsequent dispense and corresponding to a presence or absence of fluid in the nozzle portion of the reservoir, wherein the second fluid detection sensor is positioned proximate the nozzle portion of the reservoir and configured to detect fluid in the nozzle portion of the reservoir;
• determining a current amount of fluid in the reservoir based on the second fluid detection data;
• and
• causing at least one of a notification on an interface of the fluid dispenser, transmission of an alert or information to a remote computing device, or modification of an operating parameter of the fluid dispenser.