Introduction
Smart waste management systems need to know when bins are used and how full they are. PIR sensors can detect people approaching bins, indicating usage.
Applications in Waste Management
Usage Detection
Detect when someone approaches a bin to deposit trash. Optimizes collection routes.
Bin Lid Automation
Trigger automatic opening of bin lid when person approaches.
Vandalism Prevention
Detect unusual activity around bins.
Sensor Placement
- On bin front: Detect approaching person
- Inside lid: Detect hand entering bin
- On pole near bin: For outdoor bins
Integration with Fill-Level Sensors
Combining PIR with ultrasonic or radar sensors gives a complete picture: when was trash deposited, and how full is the bin.
Case Study: Smart City Pilot
A city installed PIR sensors on public trash bins. Collection routes were optimized, saving 30% on fuel costs.
Conclusion
PIR sensors add intelligence to waste management, providing usage data that enables efficient operations.