系统板 6657

MAXREFDES220#:智能指尖式心率计及脉搏血氧仪,具备信号处理功能



参考设计MAXREFDES220#帮助用户快速搭建基于手指的心率和血氧饱和度的测量产品。

MAX30101MAX32664为多种基于手指的应用提供集成的硬件和软件方案。MAX32664的固件提供处理数据所需的数字信号处理功能。参考设计还包含三轴加速度计,以补偿运动伪迹。

参考设计提供MAX32630FTHR,用于评估主机系统,便于开发。

设计文档、固件及软件可在设计资源标签页下载。用户可购买电路板以便评估。

MAXREFDES220# System Board 放大+

特性

  • 微小、5.6mm × 3.3mm × 1.55mm、14引脚光模块
  • 集成玻璃盖,实现最佳可靠的性能
  • 对于移动设备而言功耗极低 (<1mW)
  • 可编程的采样率和LED电流,节省功耗
  • 高信噪比,典型值高于80dB

  • MAX32664传感器集中器
    • 具备Maxim授权的固件,内置完备的算法,支持指尖的心率和血氧饱和度的计算
    • 通过标准I2C接口与主控制器进行通信
  • 专用引导加载程序保证下的安全固件更新3轴加速度计进一步提高精度
    • 运动伪迹补偿
  • 应用

    • 便携式医疗设备
    • 远程医疗
    • 传感器集中器
    • Android或iOS设备

    Introduction

    The MAXREFDES220# provides detailed design information to use Maxim Integrated devices to quickly implement end-to-end measurement of heart rate and SpO2 using reflective photo plethysmography (PPG).

    The MAX30101 operates from a 1.8V power supply and a separate 5.0V power supply for the internal LED. Many device parameters are configurable by the MAX32644. The module can be shut down through software with zero standby current, allowing the power rails to remain powered at all times.

    MAXREFDES220# System Board 放大+

    The MAX32664 is a small, low cost, power-optimized sensor hub for finger-based pulse applications using the MAX30101. The hub collects and processes the output of the PPG and accelerometer transparently through a dedicated I2C interface. A second,standard-mode I2C interface connects to the host through a dedicated command set.

    A Windows®-based GUI configures the sensors and graphically displays raw and processed heart rate and SpO2 data. It also provides the ability to collect and log sensor output for off-line evaluation.

    The provided MAX32630FTHR board emulates a host system for easy development. Source code for the MAX32630FTHR firmware is freely available on the mbed site to allow customers to implement their own custom host on any platform.

    As with all Maxim reference designs, the bill of materials (BOM), schematics, layout files, Gerber files, firmware, and software are all available online.

    System Diagram

    Quick Start Guide

    Installation Procedure

    1. Assemble and connect the reference design hardware.

      a. Remove the MAX32630FTHR and MAXREFDES220# sensor board from the package.
      b. Connect the MAX32630FTHR and Smart Sensor Boards together.
      c. Connect a mini-USB cable between the PC and the MAX32630FTHR.

    2. Verify the operation of the MAX32630FTHR host

      a. Immediately after connecting the USB cable, observe the LED on the MAX32630FTHR.
      b. If the LED briefly turns yellow, and then blinks green, the MAX32630FTHR is programmed correctly and ready for use.
      c. If the LED blinks yellow, then the MAX62630FTHR has been initialized but the sensor board is not responding. Unplug the USB cable. Separate and then reconnect the sensor board and MAX32630FTHR, and then connect the USB cable again. If the condition persists, please contact Maxim technical support for assistance.
      d. If the LED turns red or blinks any other pattern or does not illuminate at all, update the MAX32630FTHR as described below.

    3. Download and install the Maxim licensed MAX32644A firmware.
    4. Download and install the Maxim DeviceStudio GUI software.
    5. a. Navigate to the Maxim Integrated website, enter MAXREFDES220# into the search tool. Select the entry for MAXREFDES220# in the Product Results section.
      b. On the product QuickView page, select Design Resources and download the files under “Software Files”.
      c. Extract the downloaded files into any directory.

    Operating the GUI

    1. After the hardware and software installations have been completed, make sure the MAX32630FTHR is connected to the PC using the USB cable.
    2. Launch the Maxim DeviceStudio application.
    3. Uncheck “ADB“ under Scan Options
    4. Press the scan button to auto-detect the Smart Sensor board that shows as PPG under "Connected Devices".
    5. Click "Launch Tool" to run the MAXREFDES220#-specific features.
    6. Configure the PPG settings as desired. Do not change the FIFO settings from their default values.
    7. Select “Accelerometer Data” to display X-axis and Y-axis accelerometer results from the Sensor Board.
    8. Select “Algorithm Data” to display the data from the IR and red LED sensors.

    Updating the MAX32630FTHR firmware

    These steps are only necessary if the MAX32630FTHR does not initialize as described above.

    1. Navigate to the Maxim Integrated website, enter MAXREFDES220# into the search tool. Select the entry for MAXREFDES220# in the Product Results section.
    2. From the product page, select Design Resources and download the files under "Firmware Files".
    3. Extract the .bin file into any directory.
    4. Connect one end of the ribbon cable to the black header J4 on the MAX32630FTR.
    5. Examine the other end of the ribbon cable carefully. One side of the cable going into the black header SWD is marked by the red wire. Connect the cable and SWD header, making sure the red wire is furthest from the letters SWD.
    6. Connect a mini USB cable between the USB connector labeled HDK and the PC.
    7. Open a File Explorer window. The programming adapter shows as a new USB drive.
    8. Drag and drop the downloaded .bin file onto the icon for the new USB drive. The LED begins to flash red while the MAX32630FTHR is being programmed.
    9. When the LED stops flashing, remove the ribbon. Press the reset button on the MAX32630FTHR and verify the operation of the MAX32630FTHR.

    10. Windows is a registered trademark and registered service mark of Microsoft Corporation.

    Quick Start Guide

    Installation Procedure

    1. Assemble and connect the reference design hardware.

      a. Remove the MAX32630FTHR and MAXREFDES220# sensor board from the package.
      b. Connect the MAX32630FTHR and Smart Sensor Boards together.
      c. Connect a mini-USB cable between the PC and the MAX32630FTHR.

    2. Verify the operation of the MAX32630FTHR host

      a. Immediately after connecting the USB cable, observe the LED on the MAX32630FTHR.
      b. If the LED briefly turns yellow, and then blinks green, the MAX32630FTHR is programmed correctly and ready for use.
      c. If the LED blinks yellow, then the MAX62630FTHR has been initialized but the sensor board is not responding. Unplug the USB cable. Separate and then reconnect the sensor board and MAX32630FTHR, and then connect the USB cable again. If the condition persists, please contact Maxim technical support for assistance.
      d. If the LED turns red or blinks any other pattern or does not illuminate at all, update the MAX32630FTHR as described below.

    3. Download and install the Maxim licensed MAX32644A firmware.
    4. Download and install the Maxim DeviceStudio GUI software.
    5. a. Navigate to the Maxim Integrated website, enter MAXREFDES220# into the search tool. Select the entry for MAXREFDES220# in the Product Results section.
      b. On the product QuickView page, select Design Resources and download the files under “Software Files”.
      c. Extract the downloaded files into any directory.

    Operating the GUI

    1. After the hardware and software installations have been completed, make sure the MAX32630FTHR is connected to the PC using the USB cable.
    2. Launch the Maxim DeviceStudio application.
    3. Uncheck “ADB“ under Scan Options
    4. Press the scan button to auto-detect the Smart Sensor board that shows as PPG under "Connected Devices".
    5. Click "Launch Tool" to run the MAXREFDES220#-specific features.
    6. Configure the PPG settings as desired. Do not change the FIFO settings from their default values.
    7. Select “Accelerometer Data” to display X-axis and Y-axis accelerometer results from the Sensor Board.
    8. Select “Algorithm Data” to display the data from the IR and red LED sensors.

    Updating the MAX32630FTHR firmware

    These steps are only necessary if the MAX32630FTHR does not initialize as described above.

    1. Navigate to the Maxim Integrated website, enter MAXREFDES220# into the search tool. Select the entry for MAXREFDES220# in the Product Results section.
    2. From the product page, select Design Resources and download the files under "Firmware Files".
    3. Extract the .bin file into any directory.
    4. Connect one end of the ribbon cable to the black header J4 on the MAX32630FTR.
    5. Examine the other end of the ribbon cable carefully. One side of the cable going into the black header SWD is marked by the red wire. Connect the cable and SWD header, making sure the red wire is furthest from the letters SWD.
    6. Connect a mini USB cable between the USB connector labeled HDK and the PC.
    7. Open a File Explorer window. The programming adapter shows as a new USB drive.
    8. Drag and drop the downloaded .bin file onto the icon for the new USB drive. The LED begins to flash red while the MAX32630FTHR is being programmed.
    9. When the LED stops flashing, remove the ribbon. Press the reset button on the MAX32630FTHR and verify the operation of the MAX32630FTHR.
     
    Status:
    Package:
    Temperature:

    MAX32664
    超低功耗生物识别传感器集中器

    • 生物识别传感器集中器应用算法支持更快上市时间
    • 基于手指(版本A)的算法测量
    • 提供原始和计算得到的数据

    MAX30101
    用于可穿戴健康设备的高灵敏度脉搏血氧仪和心率传感器

    • LED反射方案中提供心率监测仪和脉搏血氧仪传感器
    • 微小、5.6mm × 3.3mm × 1.55mm、14引脚光模块
    • 使移动设备以极低功耗工作