Description
Dragino LoRaWAN Soil Moisture, Conductivity, and Temperature Sensor for Agricultural applications.
Designed to measure the soil moisture of saline-alkali soil and loamy soil. The soil sensor uses Frequency Domain Reflectometry (FDR) to calculate the soil moisture with the compensation from soil temperature and conductivity. It also has been calibrated in factory for Mineral soil type.
Soil Moisture, Temperature, and Conductivity values are uploaded via wireless to a LoRaWAN gateway.
The LoRa wireless technology extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
Bluetooth (BLE) & wireless Over-the-Air (OTA) configuration supported.
Applications
How It Works
Measurement of soil conditions are reported at regular intervals.
Features
- LoRaWAN 1.0.3 Class A
- Band: AU915
- Ultra-low power consumption
- Monitors
- Soil Moisture
- Soil Temperature
- Soil Conductivity
- Supports wireless OTA update firmware
- Parameter change by:
- AT commands
- Downlink commands
- Radio unit:
- IP66 Waterproof Enclosure
- Solar panel + 3000mAh Li-ion battery
LoRaWAN
The LoRa wireless technology in this device sends data over extremely long ranges at fixed intervals; default is one measurement every 20 minutes, but can be changed. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimising energy consumption. In Australia, the AU915 (915 MHz) band is used, which does NOT need clear line-of-sight.
Solar Powered
This product is solar powered and includes a rechargable 3.8 V / 3000 mAh Li-ion battery. Because the electronics is designed for ultra-low power consumption, the built-in 0.9 W solar panel is sufficient for indefinite duration, long term use.
UBWH Range Testing
Google will tell you that LoRaWAN range is up to 10-15 kilometers in rural areas and 2-5 kilometers in urban areas.
We like to verify and test claims like this. What we can say is that our testing shows that 2 km range is very realistic in an urban area, with a few trees obstructing the line of sight.
We tested with this equipment:
Click image to enlarge
Decoder
See UBWH LoRaWAN Javascript Decoders. These decoders can be used in LoRaWAN Network Servers such as Chirpstack.
Specifications
| RADIO UNIT
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| Supply Voltage | Built-in Battery: 2.5 ~ 3.6V
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| Operating Temperature | -40 ~ 85°C
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| CABLE
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| Length | 3.3 m
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| Diameter | 5.5 mm
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| SOIL MOISTURE
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| Range | 0-100.00 V/V %
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| Resolution | 0.01 V/V %
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| Accuracy | ±3% (0-53%)V/V %
±5% (>53%) V/V %
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| SOIL TEMPERATURE
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| Range | -40.0℃ ～ 85.0℃
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| Resolution | 0.01℃
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| Accuracy | -10～50℃:<0.3℃
All other: <0.6℃
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| SOIL CONDUCTIVITY
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| Range | 0-20000 uS/cm(25℃)(0-20.0EC)
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| Resolution | 1 uS/cm
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| Accuracy | 2%FS
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| LORA
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| Frequency | 915 Mhz
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| RF output | Max +22 dBm
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| RX sensitivity | down to -139 dBm.
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| Blocking immunity | Excellent
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| BATTERY
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| Capacity | 3000 mAh
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| Type | Li-ion
Re-charged by solar panel
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| SOLAR PANEL
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| Capacity | 0.9 W
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| Type | Built-in
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| POWER CONSUMPTION
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| Sleep Mode | 5uA @ 3.3v
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| LoRa Transmit Mode | 125mA @ 20dBm
82mA @ 14dBm
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Shipping Weights & Dimensions for 1 carton of 2 ea
Dimensions: 14 x 23 x 18 cm
Volume: 0.0058 m3
Volumetric Weight: 1.45 kg
Dead Weight: 1.40 kg
