This Arduino library provides a simple C++ class for ultrasonic distance sensors (SRF04, SRF05, HC-SR04). It supports measuring distances in centimeters or inches, object detection within a threshold, ...
Abstract: This letter presents a real-time bed-exit alarm system using ultrasonic sensors, infrared (IR) sensors, and an accelerometer. The ultrasonic sensors detect the elderly in bed; the IR sensors ...
Abstract: During orbital operation, the space plasma environment affects the spacecraft, leading to the occurrence of electrostatic discharge, which can jeopardize the safe operation of the spacecraft ...