Love Alarm - Broadcast Production Location System
Overview
Real-time location-based system for Wavve original dating show "Love Alarm" (produced by Kakao Entertainment). Implemented the app from the drama in reality - a prop system used by cast members during broadcast filming.
Work Scope
- Android app development (Java, Kotlin, WebView)
- Node.js server (MQTT, AWS SNS)
- Admin web page (real-time monitoring & control)
- UWB embedded firmware (C, Decawave MDEK1001)
- On-site system installation and operation
Key Features
UWB Indoor Positioning System
Built UWB grid with 4+ anchors and multiple tags using Decawave MDEK1001. TDoA triangulation achieves 10cm precision at 10Hz update rate for real-time cast tracking.
Signal Noise Filtering & Stabilization
Minimized UWB sensor noise using 1€ Filter algorithm and Snapping techniques. Reduced jitter/latency in 50dB SNR environment for stable radius event detection.
Android App - Location-based Alerts
WebView-based architecture for easy on-site modifications. Foreground/Background services for vibration, alarms, and Push notifications. Auto-alerts when entering proximity radius.
Admin Console - Real-time Monitoring
Real-time location visualization on 2D floor plan. Remote control for tracking targets, mode switching, tag reassignment. Battery/communication status monitoring for early fault detection.
On-site Installation & Operation
Installed UWB anchor grid at filming location with laser surveying. Battery life testing (36hrs), spare module protocols, frequency interference checks, and real-time technical support.
Achievements
- 10cm precision indoor positioning with UWB TDoA
- 10Hz interactive-rate location tracking
- 36-hour continuous operation (Panasonic CR123A batteries)
- Successful filming: May 2022 at Goseong pool villa with 8-9 cast members
- Aired as Wavve original entertainment program