Products with Built in Sensor Functions

In some other washing machines that have recently entered the market, the wash load is detected by a weight sensor that measures the elongation of the spiral springs where the tub is suspended inside the washing machine. This is known as a load size indicator . Based on information from the detergent manufacturer, it tells the customer how much detergent to use. 

In automatic dishwashers, amount of dirt on crockery and cutlery can be measured with a radar sensor [87] or with a device that uses the reflectivity of an integrated surface [88]. Thus, the load of the washing liquor with soil and detergency can be measured. 

Most of the relevant substances within household appliances cannot be measured directly with any kind of sensor. Several applications have been described that can indirectly determine one or several parameters. Sensors which rely on changes of weight, turbidity or conductivity have already implemented, while direct determination of substances with chemical or biochemical sensors is still problematic because of insufficient stability and reproducibility. 

Detergent Products with Built in Sensor Functions 

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Another way to achieve high detergency performance while keeping environmental impacts low is by making intelligent products with built-in sensor functions. In these applications, the products can respond to external stimuli and fulfil their task. The inherent sensoric principles of two recent innovations, detergent tablets and dishwashing tablets with built-in rinse aid, will be discussed. 

Detergent Products with Built in Sensor Functions 1109... 

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