Maxim MAX86150生物传感器模块流动医疗解决方案

Maxim公司的MAX86150是集成了用于动医疗的心电图,脉搏血氧仪和心率监视器传感器模块,包括LED,光电检测器和具有环境光抑制的低噪音电子学,使得很容易设计流动医疗和可穿戴设备.器件工作电压1.8V,并具有用于内部LED的单独电源,和模块的通信采用I2C兼容的接口,主要用在智能手机,平板电能,可穿戴设备以及健身辅助设备.本文介绍了MAX86150主要优势和特性,简化框图和功能框图,应用电路图以及评估板MAX86150 EVK主要特性,电路图,材料清单和PCB设计图.

The MAX86150 is an integrated electrocardiogram, pulse oximeter, heart rate monitor sensor module. It includes internal LEDs, photodetector, and low-noise electronics with ambient light rejection. The MAX86150 helps ease design-in to mobile and wearable devices.

The MAX86150 operates on a 1.8V supply voltage with a separate power supply for the internal LEDs. Communication to and from the module is entirely through a standard I2C-compatible interface. The module can be shut down through software with near zero standby current, allowing the power rails to remain powered at all times.

MAX86150主要优势和特性:

Electrocardiogram (ECG) Optimized for Dry Electrode Operation
Reflective Heart Rate Monitor and Medical-Grade Pulse Oximeter
Miniature 3.3mm x 5.6mm x 1.3mm 22-pin Optical Module Optical-Grade Glass for Long-Term Optimal and Robust Performance
Ultra-Low Power Operation for Mobile Devices Ultra-Low Shutdown Current (0.7μA Typical)
High SNR and Robust Ambient Light Cancellation
-40℃ to +85℃ Operating Temperature Range

MAX86150应用:

Smartphones
Tablets
Wearable Devices
Fitness Assistant Devices

图1.MAX86150简化框图

图2.MAX86150功能框图

图3.MAX86150典型应用电路图

评估板MAX86150 EVK

The MAX86150 Evaluation System (EV system) provides a proven platform to evaluate the MAX86150 integrated photoplethysmogram (PPG) and 1-lead electrocardiogram (ECG) sensor module. The EV system consists of two boards that connect through header pins: a MAX32630FTHR microcontroller board and a MAX86150 evaluation kit (EV kit). The MAX32630FTHR houses a microcontroller with preloaded firmware, Bluetooth communication, and power management. The sensor board contains the MAX86150 module and two stainless steel dry electrodes for ECG measurement. The EV kit is powered by the included lithium ion battery, which is charged with a micro-USB cable.

评估板MAX86150 EVK主要特性:

Real-Time Monitoring of PPG and 1-Lead ECG
Data-Logging Capability
Windows® 10 Compatible GUI Software
Integrated Dry Electrodes
Fully Assembled and Tested

评估板MAX86150 EVK包括:

MAX86150 EV kit
MAX32630FTHR
Pico programming adapter
2 x USB A to micro-USB cables
500mAh lithium polymer battery

图4.评估板MAX86150 EVK外形图

图5.评估板MAX86150 EVK电路图(1)
评估板MAX86150 EVK材料清单:

图6.评估板MAX86150 EVK PCB设计图(1):顶层丝印

图7.评估板MAX86150 EVK PCB设计图(2):顶层

图8.评估板MAX86150 EVK PCB设计图(3):层2

图9.评估板MAX86150 EVK PCB设计图(4):层3

图10.评估板MAX86150 EVK PCB设计图(5):底层

图11.评估板MAX86150 EVK PCB设计图(6):底层丝印