Custom Outdoor Disaster Warning Pole for South Korean Emergency Management

Background  

A local government in South Korea needed outdoor disaster warning poles for parks, schools, and beaches. In case of typhoons, tsunamis, earthquakes, or security incidents, the poles must emit alternating red‑blue flashing lights and loud siren alerts, with remote control via a central platform.

Challenges  

- Fully outdoor: IP66, salt‑fog resistant, UV stable.  

- Multiple triggers: physical button, wireless remote, 4G IoT platform.  

- Siren ≥120dB covering 100m radius; red‑blue light visible in daylight.  

- Battery backup: 2 hours operation after power outage.

Solution  

- Structure: 2.5m aluminum pole, top ring LED module (40 red + 40 blue high‑power LEDs), mid‑section speaker array and button box.  

- Control: Industrial ARM‑based main board, 4G CAT‑1, GPS time sync.  

- Software: Web dashboard + mobile app – map view, one‑click or zone‑based activation.  

- Power: AC220V mains + internal Li‑ion battery (12V 20Ah) with auto‑changeover.  

We completed full‑stack hardware & software development: structural design, circuit design, embedded coding, cloud platform, EMC/environmental testing. Project duration 6 months.

Results  

- First 50 units installed in coastal parks in Busan and Incheon.  

- Successfully tested in two typhoon events; public feedback: “loud enough and lights very noticeable”.  

- Client plans to include the pole as a standard item for provincial emergency procurement.