The intelligent upgrade of NPK blending fertilizer produciton lines focuses on four main areas: precise control, data-driven operations, remote maintenance, and flexible production. The specific implementation paths are as follows:

1. Intelligent Batching and Closed-Loop Control: Equipped with AI algorithms and a DCS distributed control system, and supported by high-precision weighing sensors (accuracy ±0.2%-±0.5%), it automatically identifies formulas and switches quickly (formula change time ≤30 minutes); combined with NIR/XRD online detection technology, it provides real-time feedback on NPK content and moisture content data, dynamically adjusting the batching ratio, reducing misbatching and rework rates by more than 90%.

2. Full-Process Data Visualization and Digital Twin: A cloud platform for NPK blending machine production management is established to collect operating parameters (speed, temperature, energy consumption) of equipment such as crushers, mixers, and packaging machines.  Full-process visual monitoring is achieved through a central control screen; a digital twin model of the production line is built to simulate production states under different capacities and formulas, identifying bottlenecks in advance, shortening the technical transformation cycle by 50%, and reducing trial production costs.

3. Predictive Maintenance and Remote Operation and Maintenance: Vibration and temperature sensors are installed on key equipment (mixers, granulators). Algorithms analyze equipment operating trends to predict fault risks in advance, reducing unplanned downtime by 70%; it supports remote debugging and parameter upgrades, allowing for the resolution of routine problems without on-site personnel, reducing operation and maintenance costs by 20%-30%.

4. Flexible Production and Intelligent Order Scheduling: A modular equipment layout is adopted, coupled with an intelligent warehousing system (AGV material handling, RFID raw material traceability), enabling rapid switching between multiple varieties and small-batch orders (production changeover time < 1 hour).