Circuit schematic and PCB design of low-power heart rate detector

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Low Power Heart Rate Detector Overview:

The entire system requires the MSP430F5529launchpad for design. Therefore, the whole system solution is to collect the collected data through the finger-clip oximetry probe, and transmit it to the complete medical electronic analog front end of AFE4400. Finally, the data is sent to 430 for processing and displayed on the OLED. According to the QRS waveform obtained, combined with a suitable heart rate algorithm, a heart rate monitoring device with low power consumption accuracy is designed.

The system block diagram is designed as follows:

Src="http://i.bosscdn.com/blog/20/17/56/167822986.png" /></p><p>Specific analysis of low power heart rate detector circuit:</p><ul > <li>The system input impedance is higher than 2MΩ, and requires a testable interface;</li> <li>The amplified ECG signal has no distortion. The oscilloscope measurement interface must be reserved on the circuit board. ECG waveform;</li> <li>Heart rate calculation is implemented by a single-chip microcomputer and is equipped with a display unit;</li> <li>Battery-powered to reduce system power consumption as much as possible. A current test port is reserved on the board for power consumption measurement;</li> <li>The TI wireless module is used to send heart rate related information to a mobile phone or other device for display;</li></ul>< p>Low-power heart rate detector physical picture display:</p><p><img width="480" height="362" alt=

Low power heart rate detector circuit schematic screenshot:

Src="http://i.bosscdn.com/blog/20/17/56/16710237767.jpg" /></p><p>Low-power heart rate detector circuit PCB screenshot:</p><p ><img width="480" height="357" alt=

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