Basic Circuit Experiments Based on Arduino
Human Infrared Alarm Experiment
Objective
This project is mainly for future technology reserves, using infrared thermal sensors to detect whether there are still humans on Earth.
Equipment
Arduino UNO R3 development board
One breadboard
Several Dupont wires
One thermal sensor
One LED
One 220-ohm resistor
Pyroelectric Sensor
The pyroelectric sensor, also known as a human infrared sensor, is widely used in anti-theft alarms, visitor notifications, and other fields. Piezoelectric ceramic dielectrics can maintain a polarized state after polarization, known as spontaneous polarization. Spontaneous polarization decreases with increasing temperature, reaching zero at