Maxim Integrated MAXREFDES103 Page 7 User Manual Download

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Maxim Integrated

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System Diagram

Figure 2. MAXREFDES103# system diagram.

Arm and Cortex are registered trademarks of Arm Limited.

MAX32630

Arm® Cortex®

M4F MCU

MAX20303

POWER-MANAGEMENT IC

PAN1326B

BLUETOOTH/BLE

BMI160

HOST ACCELEROMETER

QSPI

MX25U51245GZ4I54

64MB FLASH MEMORY

MAX32664

Arm Cortex M4F MCU

MAX86141

OPTICAL SENSOR

SENSOR BOARD

SENSOR HUB

UART

BOOTLOADER

MICROCONTROLLER BOARD

HR, SpO

ALGORITHM

KX122

3-AXIS ACCEL

(OPTIONAL)

SPI1

USB-C CONNECTOR

MAX4740

QUAD SPDT SWITCH

LED1

DRV

LED2

DRV

GPIO1

LED4 LED1 LED5 LED2 LED6 LED3

LED3

DRV

Summary of Contents for MAXREFDES103

Page 1: ...unning the MAXREFDES103 health sensor band This platform uses a high sensitivity PPG biosensor power management IC PMIC and microcontrollers from Maxim Integrated in a wrist worn design that allows th...

Page 2: ...Hub Algorithm Firmware msbl 13 Evaluation GUIs 17 Using the DeviceStudio PC GUI 17 Installing the Windows 7 Driver for the PC GUI 17 USB Connection 19 Bluetooth LE Connection for Windows 10 22 Starti...

Page 3: ...e the MAX32664 msbl 15 Figure 13 Warning message 15 Figure 14 Upload the embedded heart rate algorithm to the MAX32664 16 Figure 15 msbl file flashed successfully 16 Figure 16 CDC DEVICE in Device Man...

Page 4: ...re 41 Start SpO2 measurement 33 Figure 42 IR and Red signals displayed during SpO2 measurement 34 Figure 43 SpO2 measurement 34 Figure 44 Motion has turned red to indicate excessive motion 35 Figure 4...

Page 5: ...IC Dual mode Bluetooth connection Tri color status LED Sensor board MAX86141 analog front end and optical heart rate sensor with one green LED one red LED one IR LED and two photodiodes The Bluetooth...

Page 6: ...during a firmware upgrade for the micro board Two USB Micro B cables for firmware upgrade of the micro board or for PC communication with the micro board or charging of the health sensor band Health s...

Page 7: ...AGEMENT IC PAN1326B BLUETOOTH BLE BMI160 HOST ACCELEROMETER I2 C QSPI MX25U51245GZ4I54 64MB FLASH MEMORY MAX32664 Arm Cortex M4F MCU MAX86141 OPTICAL SENSOR SENSOR BOARD SENSOR HUB I2 C UART BOOTLOADE...

Page 8: ...ht The MAXDAP Pico Adapter board has two USB Micro B connectors The bottom connector next to the pushbutton is used for updating the bin firmware of the micro board The right connector next to the Dev...

Page 9: ...LED Color Solid No Blinking Fast Blink Slow Blink Red Failure detected needs system reset Communications with the MAX32664 failed Battery critically low 10 Green USB connected no data streaming Strea...

Page 10: ...he wrist bone If possible wear the health sensor band on the non dominant hand as this improves the quality of the data The health sensor band should fit tightly but comfortably around the wrist Make...

Page 11: ...GUI 1 Uninstall any previously installed versions of the DeviceStudio GUI 2 Download and extract the Eval Package for either Windows 10 supports USB and Bluetooth or Windows 7 supports only USB from...

Page 12: ...the USB Micro B cable Figure 6 MAXDAP Pico Adapter bin firmware updates port connected to the PC 2 Wait for the Windows drivers to install After the drivers have installed the PC recognizes the device...

Page 13: ...following steps Note The software package includes the latest bin firmware msbl algorithm and the corresponding msi Windows application All three components must be updated to ensure compatibility 1 O...

Page 14: ...Maxim Integrated Page 14 of 42 Figure 10 Maxim DeviceStudio scan options 4 Verify that the Devices list in the Connected Devices section shows PPG Figure 11 Maxim DeviceStudio connected devices...

Page 15: ...Firmware and select the msbl file from the extracted Eval Package and click Open Figure 12 Device tab to update the MAX32664 msbl 6 Click OK on the Warning pop up window Figure 13 Warning message The...

Page 16: ...Maxim Integrated Page 16 of 42 Figure 14 Upload the embedded heart rate algorithm to the MAX32664 Figure 15 msbl file flashed successfully...

Page 17: ...rom the embedded algorithm the app includes additional algorithms Heart Rate Variability Respiration Rate Sleep Quality Using the DeviceStudio PC GUI The Windows 10 PC GUI currently supports connectio...

Page 18: ...Select Browse my computer for driver software Figure 17 Locate and install the driver manually 8 Navigate to the location of the zip file that was extracted in step 3 then click Next Figure 18 Browse...

Page 19: ...103 appears as an Mbed Serial Port The COM port number used may be different from COM4 Figure 20 Mbed Serial Port in Device Manager USB Connection 1 Connect the health sensor band to the PC with a USB...

Page 20: ...Maxim Integrated Page 20 of 42 2 Under Scan Mode select Serial over USB Bluetooth then click Scan Figure 22 Scan for available devices...

Page 21: ...Maxim Integrated Page 21 of 42 3 Verify that the Devices list in the Connected Devices section shows PPG Figure 23 Successful connection over USB...

Page 22: ...indows BLE and click Scan Figure 24 Scan for available Windows BLE devices 2 Select the health sensor device for pairing The highest signal strength in dBm will usually be the closest health sensor de...

Page 23: ...Maxim Integrated Page 23 of 42 Figure 25 Bluetooth LE device selection...

Page 24: ...o run continuously 4 Select SCD to enable skin contact detection 5 Select AEC to enable automatic exposure control 6 Click Default to configure the AEC to the default settings 7 Select Accelerometer t...

Page 25: ...Maxim Integrated Page 25 of 42 Figure 27 Configure for Algorithm mode Figure 28 Measurement data displayed...

Page 26: ...6 SpO2 calibration Heart Rate bpm Heart rate in unit of beats per min HR Confidence Heart rate algorithm extraction confidence a threshold confidence 85 is recommended RR R to R peak interbeat interva...

Page 27: ...able or Bluetooth LE connection to log data while untethered To start flash logging from the health band 1 Press and release Button F To start flash logging from the Android app 1 Click on the three v...

Page 28: ...ED is slowly flashing white Figure 31 MSD connection to PC using USB Type C cable 2 If done correctly the MAXREFDES103 boots into mass storage device mode When in mass storage device mode the MAXREFDE...

Page 29: ...5 In the PC GUI open the Flash Log Parser from the Tools menu 6 Select the maximlog file choose an output folder and click PARSE A csv file is generated in the output folder containing the parsed log...

Page 30: ...ash the MAXREFDES103 with the latest bin and msbl as previously described Installing the App 1 After flashing the bin msbl and apk install and run the apk on your Android device Figure 33 Install the...

Page 31: ...Figure 37 Main menu of the Maxim Health Sensor Platform app Optical Heart Rate Monitoring 1 In the main menu click Optical HRM The graphing of the green signal may be seen by deselecting the IR and se...

Page 32: ...heart rate measurement 2 After a brief period the measurement is complete and the heart rate measurement is displayed Click the stop icon STOP MONITORING in the upper right corner of the app to stop t...

Page 33: ...k to the main menu and click Pulse Oximetry then specify the mode of operation for the algorithm by selecting Continuous or One Shot Click the play icon to initiate the SpO2 measurement It is advisabl...

Page 34: ...pO2 measurement 4 Feedback on the signal quality is displayed by the color of the Snr Motion Pi and Reliable R indicators These indicators turn red during the following conditions Snr indicates that t...

Page 35: ...ved perfusion index are too low Reliable R indicates that the calculated R values are not consistent therefore SpO2 is not being reported Figure 44 Motion has turned red to indicate excessive motion 5...

Page 36: ...d wrist movements Wear and position the health sensor band as described earlier Connect to either the PC GUI or the Android app as described earlier Verify that the proper PPG waveforms for IR Red sho...

Page 37: ...tart heart rate variability measurement 2 After a brief period the measurement is complete and the data for heart rate variability is displayed Figure 48 Heart rate variability measurement 3 Click on...

Page 38: ...roid device to go back to the main menu and click Respiration Rate then click the play icon to initiate the respiration rate measurement Figure 49 Start the respiration rate measurement 2 After a brie...

Page 39: ...Maxim Integrated Page 39 of 42 3 Click the stop icon to terminate the measurement Figure 51 Sleep quality assessment...

Page 40: ...to the data from an ECG reference device there may be some time differences between the two data sets Consequently post processing of the data needs to be performed to time align the PPG and ECG data...

Page 41: ...ct cover lens The SpO2 coefficients are set by sending a message through the I2C interface which is detailed in the MAX32664 User Guide For calculations used to determine the SpO2 value and an explana...

Page 42: ...uses and may be superseded MAXIM INTEGRATED PRODUCTS INC DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF THE INFORMATION DEVICES OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT MAXIM...

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