Effect of millet vegetation on received signal strength between CC2538 SoC based sensor nodes operating at 2.4 GHz Radio Frequency (RF)

Here we introduce so-far the largest subject-rated database of its kind, namely, "Effect of millet vegetation on path-loss between CC2538 SoC 32-bit Arm Cortex-M3 based sensor nodes operating at 2.4 GHz Radio Frequency (RF)". 

This proposal examines the received signal strength through measurement campaigns in the IEEE 802.15.4 standard precision agricultural monitoring infrastructure developed for millet crop monitoring from period 03/06/2020 to 04/10/2020.

Observations at different node height and vegetation depths in a crop cycle (123 days) with a sampling time of 30 minutes were made in the following two scenarios:

Scenario-1 (Database-1): Nodes of Height=52 cm are deployed and RSS measurements were collected.

Scenario-2 (Database-2): Cluster of nodes with varying height={37,51,64,72,87} are deployed and RSS measurement were collected..

Instructions:

Crop: Pearl millet (JBV3/JHB467)

Database:

Database-1:

Node height: 52

Plantation row spacing: 35 cm

Database-2:

Node height: 37,51,64,72,87

Plantation row spacing: 46 cm

Target farm (geophysical location): 

Maharajpura Farmland, Gwalior, Madhya-Pradesh, India, 474005  (lat-26.312131 lon-78.220099)

Sampling/ monitoring duration:

Monitoring period: 03 June 2020 -04 October 2020

Season: Kharif

Sampling rate: 30 minutes

Network parameter:

Hardware resources:

Base station: 

Single board computer: Dual-Core ARMCortex-A15 (AM5729)

Gateway: CC2530 packet sniffer (2 unit)

Active channel: 2

Internet connectivity: 4G

Sensor node:

MCU: CC2538

Receiver sensitivity: -75 dBm

Antenna type/gain:

Transmit power: programable(0-7 dBm)

Power-mode: 2

Power source: BL-5c 1020mAh 3.7V 3.8Wh li-ion battery

Software resources:

Operating system: Contiki-ng

Communication protocol stack: μiPv6

Transport/Network layer: ipv6

Data link/physical layer: IEEE 802.15.4-2006

Topology: mesh

Duty-cycling: contikiMAC

File format: .CSV

Data preprocessing: 

Raw Data is submitted. Data preprocessing will be required to filter out the effect of battery voltage fluctuation at many instances of the monitoring period.

Network setup:

Refer to paper " 2.4 GHz RF Signal Strength Measurement Campaign in Millet and Paddy Rice vegetation for Development of Reliable IEEE 802.15.4 WSN Crop Monitoring Infrastructure" for detailed network setup.