Research And Design Of Medical Care Instrument

The portable instrument collecting and handling on human body biomedical signal springs up broadly in family medical treatment and the health care field . It can not only make the first step judgment out to the human body situation, but also be a hospital clinical auxiliary curing device.The medical care instrument studied and designed by the thesis gives first places to the glucose, blood pressure and cardio-signals detecting related to the human body situation, adopts the longtime and ambulatory detecting method which be different from the way of the single and simple many times, strives for reflecting the healthy parameter of human body accurately, entirely and real-timeThe main content of design is the biomedical signal digital processing. Because of the characteristic property of biomedical signal - low frequency and extent, high disturbance, after the signal being collected by the related sensors and electrodes, the suitable magnifying and filtering circuit is chosen to decrease the disturbance to the lowest point; for fully utilizing the resource of the hardware, the signal A/D transformation adopts multipath inputs sharing the same A/D converter, the data collecting and converting mechanism is reasonably arranged and designed according to the demand of detecting; then the raw data is stored in CF with the identified file format in segment construction; algorithm which is fit to the embedded equipment hardware characteristic is selected and improved for the biomedical signal characteristic points and parameters ascertaining. Be to make the consumer interface amicable and observe conveniently, the ambulatory and real time curvilinear plotting method is used in signal display ,the changing curves demonstrate a longtime change trend in a day for three kinds of biomedical signals; Be to be satisfied with the clinical diagnosis request, the human body healthcare parameters are picked up for the consumer and the doctor references at the same time.The Windows CE is selected as the operating system of the instrument, and transplanted on developing board. In programming practice, the effect of ambulatory drawing method is fine in progress to comparatively complicated cardio-signals.