| Version | DoRare Station uses the InSensor processing unit (X1 board) in the model specified for the project · Existing-camera reading service is SaaS (a monthly software service) |
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| Field processing unit | InSensor (X1 board), K210 (RISC-V) chip, RT-Thread OS; built-in web configuration with tools for calibrating the reference level against a staff gauge; watchdog reset on system freeze; 3 power modes based on battery charge; automatic cabinet cooling fan activation at 45 degrees Celsius |
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| Sensor connection ports | RS485 (Modbus RTU): at least 2 ports · 4–20 mA: at least 4 channels · Digital/Pulse: at least 4 channels |
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| Warning equipment control | Station specification v5: at least 4 dry-contact relay channels rated at 5 A to control public-address towers, wired speakers, signal lights or warning siren poles, plus a 12 V LED rotating beacon at the station |
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| Water-level sensors | Non-contact radar, 0.5–15 metre range, ±10 mm accuracy, IP67 · Backup sensor (pressure or ultrasonic), 0–10 metres, for cross-checking |
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| Weather sensors | Tipping-bucket rain gauge, 0.2 mm resolution · Temperature, humidity and atmospheric pressure |
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| Camera and AI | 4 MP IP camera, IP66, infrared range at least 30 metres, supporting ONVIF Profile S, RTSP and H.265/H.264; reads a 3-metre reflective staff gauge; sends images every 30, 5 or 1 minute according to hazard level; retains images for 90 days |
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| Energy | 200 W solar panel · 20 A MPPT solar charge controller · 12.8 V 100 Ah LiFePO4 (lithium phosphate) battery — at least 7 days of operation without sunlight at normal reporting intervals (minimum requirement), with no mains electricity connection |
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| During signal loss | Stores data locally for at least 30 days, automatically uploads backlogged records when the signal returns, and triggers threshold-based warnings independently without waiting for the centre |
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| Communications | 4G LTE with an external antenna of at least 5 dBi gain and LAN backup · Station specification v5: MQTT with TLS 1.2 or higher encryption; sends data every 15, 5 or 1 minute according to hazard level |
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| Anti-theft kit | Cabinet opening, pole tilt or vibration, and under-panel motion sensors trigger a photo, lighting and an alert within 60 seconds of an event |
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| Operating conditions | Processing unit: -10 to 60 degrees Celsius; relative humidity up to 95 percent, non-condensing |
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| Structure and installation | Galvanised steel pole at least 4 inches in size and 6 metres high, with a concrete foundation at least 0.6 × 0.6 × 0.8 metres, or mounted to a bridge pier/sluice gate · Control cabinet at least 1.5 metres above the highest flood level in the past 10 years |
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| Optional modules | PM2.5/PM10 particulate matter · Ultrasonic wind measurement · Water quality (conductivity and salinity) with replaceable cartridges |
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| Cloud software | Map of all stations · 4 alert levels (normal/watch/warning/critical) · LINE/email alerts within 60 seconds · Images alongside AI readings · Rate of water rise and time to the next threshold · Historical graphs with CSV/Excel export · Public web page + QR Code · Summary report every 6 months · REST API (interface for exchanging data with other systems) |
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