Design of wrist sphygmomanometer based on sic32f911ret6

　　 The wrist sphygmomanometer scheme is a medical device that uses modern electronic technology and the principle of indirect blood pressure measurement to measure blood pressure , The principle of Oscillographic method is mostly used to measure blood pressure . The household portable sphygmomanometer mainly consists of MCU、 Display panel 、 Air pressure sensor 、 Cuff 、 Air pump 、 Battery, etc , Its working principle is based on the fluctuation of arterial blood pressure during decompression , Calculate systolic blood pressure 、 diastolic pressure 、 mean arterial pressure . This product is widely used , The main thing is that there are old people at home for daily use , The sphygmomanometer can measure the average value of human blood pressure , This blood pressure data is used to judge the health problems of users , At that time, low blood pressure will be detected , It can prevent and cure minor diseases in advance , To avoid the risk of serious illness .
　　
　　 Wrist sphygmomanometer PCBA Programme work process
　　
　　 The whole scheme adopts SIC32F911RET6 As a control chip for blood pressure measurement and display of the whole machine , Through its own temperature compensation SIC160 The pressure sensor monitors the fluctuation of arterial blood pressure , Convert to frequency , Processed by filtering algorithm , Calculate systolic blood pressure 、 diastolic pressure 、 mean arterial pressure , And drive 4.3 " 800*480 The resolution LCD panel displays the blood pressure value and pulse number , Automatic voice broadcast measurement results .
　　
　　 Features of wrist sphygmomanometer ：
　　
　　1. Data accuracy ： Filtering algorithm is adopted , Accurately calculate systolic and diastolic blood pressure . Display accuracy 1mmHg(0.133Kpa);
　　
　　2. Intelligent pressurization ： built-in 24 Bit high precision digital air pressure sensor , Accurately control the inflation and deflation of the pressure pulse belt , Effectively eliminate measurement artifacts ;
　　
　　3. Voice Announcements ： Support volume adjustment , It can automatically broadcast the measurement results in the whole process ;
　　
　　4. A big screen ： Clearer display , The algorithm has been extensively tested , A more stable , Storage 100 Group historical memory ;
　　
　　5. Rich interface elements ： It can display the real-time change of blood pressure 、 High and low voltage warning, brightness adjustment and other user interface display effects ;
　　
　　6. Rechargeable ： Built in rechargeable lithium battery , collocation Mini USB The charging interface , Easy to charge , There is no need to replace the battery .
　　
　　7、 Automatic shutdown ：1 Automatic shutdown without operation for minutes
　　
　　8、 It's easy to operate ： One key measurement , Easy to use , Good stability , Environmentally friendly materials , Use rest assured
　　
　　9、 Blood pressure measurement range ：0~ To 299mmHg（0~ To 39.9kPa）, Pulse measurement range （40~200 Time / minute ）
　　
　　10、 Measurement accuracy ： Pressure accuracy ±3mmHg（±0 .4kPa） Pulse accuracy ±5%