Week 9

Title

• Construct circuit for heart rate measurement using accelerometer

Objective

• to design the schematic diagram for heart rate circuit
• to construct the accelerometer heart rate ciruit

Content/procedure

• tried to combine and altered the schematic diagram from the internet to get the suitable heart rate circuit

Result/Analysis

• After several alteration from 2 ECG circuits found in the internet, finally get the schematic diagram that suits with the accelerometer sensor.The schematic diagram is shown below:

 

Conclusion

• This circuit is under testing.
• The first stage testing is to get the peak of the accelerometer so then we can get the threshold value that been use for the programming part.Threshold value is for accelerometer that we used as a sensor.
• Threshold as mentioned in the flow chart  is the way we used to get the heart rate in digital form.Accelerometer is moving up and down,so when the accelerometer is achieve above the the threshold value,it will triggered the next program code.