Portable Blood Biochemical Parameters And Blood Pressure Detection System Design

As the improvement of modern life, more and more people suffer from diabetes and hypertension to whom the health parameters watching appears much more important. So it is urgent to develop a wearable detecting device which can measure the blood sugar and blood pressure and so on.The design of wearable biochemical parameters in blood and blood pressure detection system includes hardware and systemic software of blood sugar, uric acid and blood pressure measuring modules. It is a feature of this system to design in modules. It is a micro-signal detecting procedure to measure the blood sugar and uric acid concentration. It converts the biochemical parameters in blood such as blood sugar and uric acid to related micro-current by produced electrochemical bio-sensor. Then the micro-current is changed into voltage through a series of converting, amplifying and filter circuit. The voltage is sampled by the Analog-to-Digital Converter on the micro-processor. The results come out by using Quadratic fitting arithmetic. The blood pressure detecting module bases on the oscillometry. In the application process, it takes arm belt as the testing medium and uses circuit integrated the core which is air pressure-capacitance sensor and annular oscillator through which gets the variational frequency data. The micro-processor collects the data with timer which has the particular function of input/capture and gets the characteristic spots by whose distribution can figure out the blood pressure of user.After debugging of this system, the device performs stably, has strong anti-jamming ability in the running process. The test of blood sugar and uric acid comes up with the clinic using standard.