Finger image sphygmomanometer
Human being’s irregular lifestyles and inappropriate eating habits nowadays result in cardiovascular diseases for citizens at large. The population that is examined having cardiovascular diseases increases every year. Such phenomenon has given blood pressure a lot of attention in the medical field. Blood pressure is an important indicator of a person’s health well being because blood pressure reflects the health status of an individual’s cardiovascular system. This research provides a comprehensive explanation on the methods of measuring blood pressure. The most popular method for blood pressure measuring is by using an electronic sphygmomanometer. Though the electronic sphygmomanometer is advanced enough to adapt a non-invasive measuring method, it still has numerous disadvantages. First, a cuff is required to occlude the blood flow in the arteries during blood pressure measuruing, which causes unpleasant feelings for the users when using. Second, a fixed cuff size may cause measuring errors, which decrease the result accuracy. Last but not least, these devices are bulky and extremely inconvenient to carry around. To remedy the problems that an electronic sphygmomanometer has, this research will illustrate how to use a camera sensor with algorithm to measure the blood pressure. Then such technology is implemented through Android smart phone application. The creation can make an accurate sphygmomanometer available to all citizens who own a smart phone. From that, they can measure their blood pressure wherever they go conveniently and accurately.