상황
A highway monitoring station needs to detect vehicle speed between two infrared sensor pairs and display it on an LCD.
이 도면에 담긴 내용
그 이면의 의사결정을 읽어 보세요.
01
Use IR sensor pairs 1 and 2 to capture entry and exit time
02
Use AT89S52 to compute speed from the sensor time difference
03
Use I2C LCD for clean readout and 7805 regulator for stable 5V
Reuse when designing a microcontroller-based highway speed checker or similar time-of-flight sensor projects.