Heart Rate Machine According To MSP430

This design designs the heart to give or get an electric shock the basic electric circuit composing of the enlarger, and adoption TI a machine of series of MSP430 of the company carries on the method of the mold number conversion processing to the heart telecommunication number, still emphasized to inquiry into the adoption to take a machine of MSP430F449 of the hardware multiplication machine to carry on a method for waving to the heart telecommunication number, and give homologous experimnt resultOutput telecommunication number of the human body myocardial after conduct the body watch because of in the dissimilarity but the creation potential differences that the body watch distribute, enlarge the potential difference that this kind of electric voltage onlies have the Class of mV and draw diagram, have to arrive the electrocardiogram(ECG),The electrocardiogram has the count for much function in the cardiovascular paroxysm clinic examine a patient.The way of the outlet of the electrocardiogram adoption that usually adopt is divided into the single outlet,3 outlets,5 outlets and 12 outlet etc.s,Divide according to the accuracy to have 8 and 12 accuracy etc.ses in common usely.single outlet, the low electrocardiogram of accuracy usually useds for the heart electricity supervision and Heart rate measure. 12 electrocardiograms of high accuracy is been apply in the clinic to examine a patient more and broadly because of can reflect the small variety of a heart electricity, heart electricity analysis and so on.Because the heart electricity range only the mV quantity class, need to be enlarge up to thousand then can be observe, and the electric resistance of the human body is more and greatly, so a high resistance, high increase the enlarger of the benefit is accurate to obtain the key of the heart telecommunication number. But was filled with the electromagnetism interference of various each kind in the surroundings environment, will affect the weak heart rate signal seriously, But among them the city is most serious to give or get an electric shock the interference of the 50 Hzs of the power supply. How avoid these interferences are also the problems that the heart electricity enlarger design must consider, In addition, the AD conversion that carries on the high accuracy is also the step of the key, the energy consume is also a factor that need to be consider.The MSP430F43X that company of TI produce, the mentally retarded quantity of the MSP430F44X series consumes to mix a machine of signal. Because having the speed quick(8 MIPSs/16 bits), gather a high( Flash, RAM, the 16 bit Timer,8 passages 12 bit ADCs and UART etc.s) and mentally retarded quantity consumes etc. characteristics, therefore very suitable for type applications of enlarger of ECG.A machine of series of MSP430F44X because of having the hardware multiplication machine, so have the certain function of DSP.