Smart Wash Process Sensor
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At the heart of Maytag’s new dishwasher is the Wash Process Sensor (WPS),
a sensor subassembly that integrates four sensor functions to continuously
monitor turbidity, conductivity, temperature, and lower wash arm rotation.
The stream of information provided by the sensor is processed by the fuzzy
logic controller and is used to guide the operation of the dishwasher. What
the sensor does, in essence, is provide enough sensory data to the machine
so that dishes can be effectively washed using a minimum of water and energy.
In the past, the control variable for a load of dirty dishes
was time: Energy and water were wasted because appliances depended on
fixed time-based cycles to clean dishes, regardless of how soiled the dishes
were or the type or amount of detergent used. The idea behind a dishwasher
equipped with sensors and fuzzy logic control is that water and energy resources
can be conserved by continuously sensing load conditions and adapting machine
cycles according to need.
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