Motion Sensor Low-Power MCU and Power Management Solutions for ADI Solutions

The term "wearable" indicates that the device is either a device that is worn directly on the human body, or a piece of clothing, and has a suitable design to support its use as a wearable accessory. Broadly speaking, this requires the device to be extremely small in size and weight, functionally autonomous, self-contained, easy to use, and comfortable to wear.

A wearable healthcare device can be defined as a non-invasive system that can self-monitor or support specific medical functions. (The national standard for wearables is under development)

There are many types of smart wearable healthcare devices, such as wristbands, watches, glasses, and other wearable types. Functions performed include pedometer, heart rate monitoring, motion recording, bioelectrical potential measurement, bioimpedance measurement, oximetry, and the like.

Smart wearable healthcare devices are an extension of traditional medical devices. The typical hospital medical equipment is large in size, complex in structure, and high in power consumption, and is intended for high-precision clinical applications. With the development of sensors and semiconductor technology, device size and power consumption are much smaller than before, making wearable devices a reality. Many of the technologies used in hospital clinics have moved from hospitals to homes or to various wearable devices. Smart wearable healthcare devices are often non-invasive vital sign monitoring devices that are easy to use and wear. In order to enhance the user experience, the lighter the weight, the lower the power consumption, the better. It also provides connectivity to other consumer electronics devices.

Size ( very important, most wearables are light and smaller )

Smaller package

Advanced packaging technology to increase integration

I hope that the fewer external components, the better.

Ultra low power consumption

Power consumption is critical to the user experience, the lower the better

Limited battery size due to system size

Low quiescent current chip facilitates low power consumption and extended standby time

Wearable devices typically require a low-power MCU

Wearable devices require low-power connectivity

Ergonomic design

Easy to use

Prevent misoperation design

Highly reliable, highly sensitive sensor design

High reliability

Adapt to various environments

Good mechanical design to prevent equipment damage

Sometimes the device needs to be waterproof

Sensor Technology

Multi-sensor fusion

Choose sensor materials with good biocompatibility

High sensitivity at low power consumption

Connection technology

Need low-power Bluetooth, WIFI connection to access other smart devices

Data synchronization and application auto-upgrade

ADI offers a wide range of highly integrated AFEs, motion sensors, low-power MCUs and power management solutions to optimize the quality and reliability of wearable devices. In addition, Analog Devices offers evaluation boards, simulation tools, and application expertise to support customers' design and development efforts.

Note: The above signal chain represents a smart wearable healthcare device system. The technical requirements of the modules may vary in the specific design, but the products listed in the table below represent the ADI solutions that meet some of the requirements.