PSS Research and Concept

For this project I chose household cleaning as my topic.

According to WHO researches, indoor air pollution is more serious than out door pollution.
And it might cause asthma, eczema etc. 

Concept 1 is designed to use TI02 filtration process to filter air.

Concept 2 is designed to use static electricity to absorb dirt.  

Concept 3 is designed a ball-shaped purifier as pet toy. It works while pets playing with it and can clean some hard-to-touch space. And bamboo charcoal will be filled in. 

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However, after I presented to tutor I was found that I miss understand with PRODUCT SERVICE SYSTEM. I did product design bot not PRODUCT SERVICE SYSTEM design. Research was fine, need to think about that system instead of product design.