LoRaWAN C2H4 Sensor for Fruit and Vegetable Monitoring: Practical Application Case

A medium-sized fruit and vegetable warehousing and logistics enterprise, focusing on the acquisition, warehousing, cold chain transportation and terminal retail distribution of perishable fruits and vegetables (such as tomatoes, kiwifruits and green onions), was facing high loss rates and inefficient manual monitoring before adopting the LoRaWAN C2H4 sensor system.

1. Pain Points Before Deployment

• Inaccurate C2H4 (ethylene) concentration monitoring, leading to 12% warehousing loss, 8% cold chain loss and 5% retail loss.

• Low efficiency of manual inspection, failure to realize 24-hour real-time monitoring, and delayed response to abnormal conditions.

• No continuous data records of environmental parameters, making it impossible to trace loss causes and optimize processes.

2. Equipment & System Architecture

The enterprise adopted a LoRaWAN-based IoT monitoring system, including LoRaWAN C2H4 sensors, gateways, cloud platforms and auxiliary control devices, with a four-layer architecture (perception layer, transmission layer, platform layer and application layer) to achieve full-chain monitoring.

• LoRaWAN C2H4 Sensor (Model: LW304D-C2H4): Measurement range 0-500ppm (switchable to 0-5000ppb for sensitive fruits), adopts external 12VDC power supply, anti-interference and maintenance-free.

• LoRaWAN Gateway (Model: GW100-NS): Supports LoRaWAN 1.0.3 protocol, covers 1-3km indoors and 3-10km outdoors, and can connect 100-200 sensors.

• Cloud Platform: Real-time data display, abnormal early warning, data tracing and intelligent linkage control.

3. Deployment Scenarios

Sensors were deployed in three core scenarios to ensure full coverage of the fruit and vegetable circulation process:

• Warehouse: 28 C2H4 sensors deployed in different storage areas, with customized thresholds for different fruits, linked with dehumidifiers and ethylene adsorption devices.

• Cold Chain Transportation: 1 sensor per vehicle, real-time monitoring of C2H4 concentration and temperature-humidity during transportation, with stable data transmission via 4G.

• Retail Stores: 2-3 sensors per store, installed in display cabinets and storage rooms to guide rational replenishment and reduce retail loss.

4. Application Effects

After 6 months of operation, the system achieved remarkable results:

• Warehousing loss rate dropped from 12% to 3.2%, cold chain loss rate from 8% to 1.5%, retail loss rate from 5% to 1.1%.

• Manual inspection was eliminated, and the average time for abnormal handling was reduced from 2 hours to 15 minutes.

• The shelf life of tomatoes, kiwifruits and green onions was extended by 2 times, 1.3 times and 1.3 times respectively.

This case fully demonstrates the advantages of LoRaWAN C2H4 sensors in improving the intelligence of fruit and vegetable monitoring, reducing losses and optimizing operational efficiency.