< p > in Spain, there is a dog park specially designed for dog lovers, but not everyone strictly abide by the rules of the park and clean up the excrement of dogs in time.

To this end, several Spanish children invented the "anti stepping dog shit" a target= "_blank" href= "//m.pmae.cn/" > shoes < /a >, also won the gold medal of the invention competition.

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< p > according to Spanish reports, in this year's London children's invention Grand Prix, a few Spanish "a shoes" //m.pmae.cn/news/index_c.asp < < //m.pmae.cn/news/index_c.asp > > have won gold prize and applied for patent.

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< p > it is understood that children's original design goal is to step on the dog's shit when the shoes will issue "toot" sound to warn the wearers to wash immediately.

But they are able to warn better before stepping on them. The way to achieve this is to change the shoe sensor from "touch sensing" to "taste sensing".

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"P > a href=" //m.pmae.cn/news/index_p.asp "> Spanish /a > technicians based on the children's idea to make a sense of taste sensor that can induce shit smell. Then the shoe factory placed the sensor on the sole, and after a number of experiments, the alarm could be made 50 centimeters close to the dog's shit.

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< p > it is reported that "stepping on dog shit shoes" is mature theoretically, and the sensitivity and durability of olfaction need to be improved in practical application.

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