Department - Author 1
Electrical Engineering Department
Degree Name - Author 1
BS in Electrical Engineering
Date
6-2015
Primary Advisor
Wayne Pilkington
Abstract/Summary
What if your alarm clock knew when you got out—and stayed out—of bed? Current alarm clocks happily let you go back to bed after turning them off. In this project, I build an alarm which only stops ringing when you get out bed, and starts ringing again if you lie back in bed.
This project uses capacitance to detect bed occupancy. A person on or near the bed creates a tiny, picofarads level increase in capacitance, as seen by a sensor placed under the mattress. A microprocessor interprets this signal, and also drives an audio alarm. Shielding of the sensor and automatic calibration of the sensor ensures the system works for any room and bed.
URL: https://digitalcommons.calpoly.edu/eesp/302
Included in
Electronic Devices and Semiconductor Manufacturing Commons, Entrepreneurial and Small Business Operations Commons, Signal Processing Commons, VLSI and Circuits, Embedded and Hardware Systems Commons