Definition
Precision agriculture emphasizes input on demand. UAV multispectral aerial surveys generate NDVI and other vegetation indices. After processing, prescription maps guide crop protection machines for variable spraying of pesticides or fertilizers. Task execution data (flight paths, nozzle flow, weather snapshots, and field boundaries) need to be returned to the farm management platform for effect evaluation, subsidy auditing, and next year's prescription optimization.
Stable Wi‑Fi is often lacking in the field; airborne or portable gateways rely on cellular uploads. IoT SIM cards can serve as a supplementary channel for public network return and remote operations, complementing local image transmission and remote control links; deployment should pay attention to antenna layout, power consumption, and network quality fluctuations in the flight area, and avoid large data uploads occupying the safety link.
Technical Features
In rural weak-network scenarios, prescription slices and operation logs can be cached at the gateway edge and uploaded in batches after landing or docking; when uplink bursts coincide with operation seasons, it's advisable to plan data pool and data plan tiers. Cross-province fleet operations need to pay attention to roaming charges and carrier policies.
SimtoLink supports splitting SIM strategies by fleet or cooperative, regional and whitelist management, and can remotely disable devices to prevent theft; online monitoring helps identify field edges and valley corridors that repeatedly lose connection.
Use Cases
Suitable for unified prevention and control and spot spraying supplementation in large fields, orchards, and agricultural cooperatives. When linked with a plant protection telemetry platform, it can form a closed loop of "aerial survey—prescription—actual spraying—acceptance."
For compliance, prescription versions, operation trajectories, and actual spray records should be retained to meet inspection requirements; electronic fences and no-spray reminders can be configured on the platform side for environmentally sensitive areas and water source buffer zones.
Deployment and Operation Recommendations
During the project implementation phase, enterprises should bind the IoT SIM card numbers to device serial numbers, installation locations, power supply methods, and maintenance responsible persons one-to-one, and sync this information into the asset and operation system to form a traceable link from card issuance, modification, activation, suspension to eventual cancellation. For equipment involving cross-province allocation or cross-border delivery, roaming charges, real-name registration policies, and local data compliance requirements should be evaluated in advance. It is recommended to choose solutions with predictable costs that support remote network switching or eUICC, reducing the frequency of on-site disassembly, and reserving spare cards and emergency replacement processes to shorten fault recovery time. For terminals received in bulk, it is recommended to perform sampling network verification covering connectivity and charges before activating the entire batch, to reduce rework costs.
In terms of cybersecurity, it is recommended to configure dedicated APN or VPDN tunnels for production or critical infrastructure terminals, converge north-south traffic to enterprise-controllable boundaries, and link with identity authentication, bastion host remote maintenance, and operation auditing; for remote control and parameter writing capabilities, hierarchical authorization, time windows, and dual-person review should be set. Regular drills for weak network and primary/backup link switching should be organized, recording latency, packet loss, and recovery time as technical references for MLPS (Multi-Level Protection Scheme) assessment, industry regulatory inspections, or internal risk control reviews. For third-party outsourced operations, minimum permissions, session recording, and key custody responsibilities should be clarified to avoid account sharing.
In daily operations, card management platforms should be used to continuously track online rates, abnormal traffic, dormant terminals, and data plan utilization, integrating alarms with the ITSM work order system to achieve automatic ticket assignment and closure. SimtoLink can split data pools for enterprises by factory, line, or business domain, providing bulk device suspension/resumption, API integration, and billing allocation capabilities, supporting visibility, control, and sustainable cost reduction at large-scale points, while aligning card management insights with project budgets and cost centers to improve transparency.