This soil and water moisture monitoring instrument holds multiple intellectual property rights. The device integrates a suite of sensors including pH, salinity, electrical conductivity (EC), pressure-based water level, and water temperature sensors. It supports GPRS, NB-IoT, and LoRa IoT communication technologies, operates on solar power, and transmits detection data to servers every 10 minutes, with permanent data retention.

‌Applications‌:

• Real-time monitoring and early warning of pH and salinity levels in saline-alkali farmland.

• Water level supervision and alerting in irrigation districts.

‌Key Features‌:

• High measurement accuracy

• Accessible historical data archives

• Portable and field-deployable design

‌Automated Control Logic‌:

1. When salinity or pH exceeds predefined thresholds, the drainage valve ‌automatically opens‌ to fully discharge field water.

2. Upon complete drainage, the drainage valve ‌closes‌, and the inlet valve ‌opens‌ to initiate water replenishment until the target water level is achieved.

3. The inlet valve ‌shuts‌ automatically once the specified water level is reached, completing the regulation cycle.

‌Technical Compliance‌:

• Aligns with agricultural IoT standards for precision irrigation and soil salinity management.