Week 10

 Title

• Testing the heart rate circuit

Objective

• to observe the accuracy of accelerometer which act as a sensor,it will measure heart rate.
• to investigate other component accuracy such as instrumentation amplifier,operational amplifier and timer

Content/procedure

• After construct the circuit in week 9, tend to testing the circuit by using oscilloscope in order to show the results
• from the oscilloscope we need to observe the peak or amplitude voltage that the accelerometer can reach.

Result/Analysis

• When we tap or move the accelerometer ,signal will raised or reach certain peak.Amplitude is the maximum voltage reached by the signal. 

It is measured in volts, V.Peak voltage is another name for amplitude.

-Voltage is shown on the vertical y-axis and the scale is determined by the Y AMPLIFIER (VOLTS/CM) control. Voltage = distance in cm × volts/cm

-Time is shown on the horizontal x-axis and the scale is determined by the TIMEBASE (TIME/CM) control. Time = distance in cm × time/cm

I

 Conclusion

• Testing circuit need more time in order to get the correct result.