NicholasTok
Member level 1
Hi Guys,
I am currently working on a heart rate monitoring device for a university module. currently from my research, I found out that human biosignal is extremely low e.g. typically 100Hz Vp of 10mA spike.
In order to capture this signal for sampling, I will need to design a Differential Amplifier circuit of a gain of 850x follow by a Low-Pass Filter cutoff at 150Hz and another Gain Amplifier of 10x before pushing the final analog signal into AVR to do sampling.
From the picture there will be 3 Lead that will be probe onto human chest to pick up Electrocardiogram (ECG) signal of Heart Beat. just wondering if there is anyway I can replace Lead 1 and 2 into a function generator that can actually generate a constant square freq to check if this circuit works?
I am currently working on a heart rate monitoring device for a university module. currently from my research, I found out that human biosignal is extremely low e.g. typically 100Hz Vp of 10mA spike.
In order to capture this signal for sampling, I will need to design a Differential Amplifier circuit of a gain of 850x follow by a Low-Pass Filter cutoff at 150Hz and another Gain Amplifier of 10x before pushing the final analog signal into AVR to do sampling.
From the picture there will be 3 Lead that will be probe onto human chest to pick up Electrocardiogram (ECG) signal of Heart Beat. just wondering if there is anyway I can replace Lead 1 and 2 into a function generator that can actually generate a constant square freq to check if this circuit works?
