The Design of Digital Heart-rate Measuring Instrument
Abstract:The digital heart-rate measuring instrument is a kind of equipment which is commonly used in medical test. Real time and accurate measurement of heart rate have broadly applied in patient monitoring, clinical treatment and sports competitions etc. The design of digital heart-rate measuring instrument reduces the number of components and increases the accuracy and reliability of the measurement. It can get the electrocardio data, test the heart rate and automatically alarm in time when detect the unnormal heart rate data. The research is divided into three modules: preprocessing module, FPGA signal processing module and display module. In preprocessing module, the initial electrocardio data is extracted, amplified, filtered, and then the data is transmitted into the center of computing .FPGA signal processing module, the heart rate is calculated from the pretreated data. Then the heart rate is judged whether it’s normal. If not, a warning signal is sent out .There is also a clock in this module. Display module: the heart rate is displayed in this module, also there is three lights for warning .The design is high integration and wearable. The design accomplishes preprocessing module and FPGA signal processing.
Key words: electrocardio data acquisition;Heart rate measurement;VHDL