Welcome to ABC Safety Products! As ABC’s newest mechanical engineer, you have been assigned to a design team to create a water temperature monitor. Your water temperature monitor will be used in baby bathing tubs or installed in aquariums for tropical fish. In both cases, it is very important to have a constant-temperature bath. For example, when bathing a newborn baby, the ideal temperature is 38°C, which is just a little over the baby’s body temperature. If the water temperature is much cooler, the baby will get chilled; if it is much warmer, the baby will overheat or might even be burned. Likewise, in an aquarium with tropical fish, the water temperature should stay between 25°C and 27°C. Cold water may not kill them right away, but it can leave them in a weakened and stressed state that opens up the door to all kinds of fish diseases. On the other hand, water that is too warm will carry less oxygen and could ultimately harm the fish.
Your marketing team has conducted focus groups with new parents and aquarium owners. Results show that people want to have a prominent visual display of the temperature. Additionally, they want some sort of feedback when the temperature is in the desired range, as well as when it is outside the desired range. They also want a clear warning when the temperature is dangerously high or low.
Your job is to create a prototype of a monitor for either an aquarium or a baby bathing tub using Vernier sensors, Logger Pro or a standalone LabQuest 2, and a variety of output devices (included in the Materials list).
Supplement classroom instruction of temperature and its effects with hands on engineering application.
Control devices (e.g., lights, motors, buzzers) based on input from measured physical quantities (e.g., temperature).
Engineering Extension Activities provide a way to add an engineering component to a Vernier science experiment. Use sensor data and Logger Pro software (or LabQuest 2) to help solve an engineering problem.