Practical case: Object counter on conveyor belt
Автор: PrometeoBlog
Загружено: 2025-12-20
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🌐 Read the article at: https://prometeo.blog/en/object-count...
Objective and use case.
In this practical case, you will build an optical barrier using a photoresistor (LDR) and an operational amplifier configured as a voltage comparator. The circuit detects when an opaque object interrupts a continuous beam of light, triggering a signal that can be counted or processed.
Why it is useful:
Industrial automation: Used to count products moving on a conveyor belt.
Safety barriers: Detects if a person or object crosses a dangerous boundary.
Intruder alarms: Triggers a warning when a beam of invisible or visible light is broken.
Parking systems: Detects the presence of a vehicle in a specific spot.
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