|
Bioelectrical is an important message which reflects various physiological states of the human body. People have researched the ECG, EMG, EOG and other biological signals, and applied to the diagnosis and treatment of disease. In addition to biological signals, because the activities of life, the body will produce a variety of audio signals, such as the beating heart sound (heart sounds), these voices can be converted to analog by the sensor.People’s awareness in health is growing, so the medical equipements should be developed in varity styles, not only the larg-scale and complex equipements in hospital, but there is a need to develop small, portable and wearable monitoring devices for families, community and athletes training. The paper based on the past domestic and foreign research , detecte and process the ECG, heart sounds, muscle and eye electrical signals when human actives , and combined with current popular ultra-low power 16-bit controller, MSP430, developed Portable human motion detection of biological signal processing system based on MSP430 controller. The system mainly consists of micro-controller, biological signal detection module, LCD display module, SD card storage module, key control module and sound -light alarm module, the signal detection module includes ECG, heart sound, EMG and EOG detection module, which complete these biological signals extraction collection in state of human activities; LCD display module real-time display of these biological signal waveform,but also in the display of ECG waveform in real time, it can display heart rate; under the control buttons ,SD card storage moduleon store the dynamic signals and can select it to playback; button enables one-button control module power switch machines, selection waveform display and waveform storage control.In addition to LED power indicator, memory indicator, when the leads of the biological signal detection module off ,the sound and light directed modules alarm .On the software side, using structured programming methods, to complete a digital circuit part of the initialization of each module so that it can work, and achieved good results.
|