| Summary: | 碩士 === 國立交通大學 === 電控工程研究所 === 103 === Nowadays, the medical industry is progressive substantially. More and more people start to concern the issue of cosmetology. The skin whitening is an extremely important and valuable topic when the cosmetology is mentioned. In the cosmetic market does not have an objective, quantify and accurate measurement method to measure the level of skin whitening. Therefore, a new cosmetic platform which can measure the quantity of melanin in the skin with a non-invasive way, and the system on this platform can be made on chip which can combine to the handheld device, like a mobile phone, watch…etc. It makes the system be easy to use and carry. This study presents a low noise at ultra low frequency transimpedance amplifier (TIA) which is applied to the melanin system. And add the blood pressure and heart rate measurement function. In other words, this is a multiple physiological information measurement system.
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