Soft Hand Holder
Dec 2021 · 4 min read
Tara Sethi | Collaborators: Sarah Cheung, Teja Kaipa, and Chelsea Triebwasser
Improving caregiver sleep and infant safety through multi-sensory design
Baby monitors are basic radio systems that help caregivers monitor infants from a distance. However, there are few on the market today that paint a holistic picture of an infant’s health. Traditional baby monitors require a caregiver to watch a camera or listen for alerts, limiting the activities caregivers can do. In addition, caregivers are often woken up unnecessarily throughout the night. Instead, the Soft Hand Holder wearable baby monitor provides more meaningful information by monitoring and recording heart rate, temperature, movement, emotion, and sound. This sensory information is then sent to a wearable wristband that notifies the caregiver of the infant's status through a combination of visual, auditory, and haptic alerts. Alert severity is determined by assessing the aggregate sensory information.
This team project was completed to satisfy the final project requirements for the Multi-Modal Design (HF766) course at Bentley University. All work shown was the result of a collaborative, team effort among Sarah Cheung, Teja Kaipa, Chelsea Triebwasser, and Tara Sethi.

Galvanic Skin Response (GSR) Sensor
Sound Sensor
Temperature Sensor
Heart Rate Sensor
Analog Servo Motor for haptic vibration
Buzzer for sound alerts
Caregiver Wristband
LCD Display
Infant Glove (not to size)
SCHEMATICS
Two wearable devices
The Soft Hand Holder consists of two devices with five sensors on the infant device and three output modules on the caregiver device. Two Arduino boards support system processing. The devices communicate through a Wi-Fi module. The infant Arduino monitors the infant’s heart rate, temperature, movement, emotion, and sound. This information is then sent to the caregiver Arduino over Wi-Fi. The caregiver Arduino receives the information and triggers the correct modules to alert the individual wearing the device via sound, vibration, and a visual display of information on a liquid crystal display (LCD) screen.



PROOF OF CONCEPT
Product Demo Video
MORE INFORMATION
ACM Report
Interested in learning more? Click below to download the full ACM style report.
PROJECT DATE
September 2021 - December 2021
MY ROLE
One of four collaborators on the wearable multi-modal project. All team members assisted in brainstorming, design, engineering, programming, writing, and presentation efforts.
TOOLS
Arduino, Arduino IDE, Grove Sensors, hand sketching