[Retracted] Large-Area Saline-Alkali-Tolerant Rice Growth Environment Monitoring System Based on LoRa+UAV

Table 3

Related sensor performance indicators.

Relevant performance indicators	Air temperature and humidity sensors	CO2 sensors	Soil temperature and humidity sensors	Soil temperature moisture conductivity transmitter	Soil pH sensors
Operating voltage	5V	5V	5V	5V	5V
Measurement range	40 °C∼+60 °C,0%RH∼80%RH	0–2000 ppm	Soil moisture: 0–100%; soil temperature -40–80 °C	Electrical conductivity:0–20000us/cm	3-9PH
Measurement accuracy	Humidity ±3%RH (60%RH, 25 °C); temperature ±0.5°C(25°C)	±50 ppm	Soil moisture: 0–50% ± 2%, 50–100% ± 3% (brown soil, 60%,25 °C); soil temperature±0.5 °C(25°C)	0–10000us/cm c scope±3%; 10000–20000us/cm scope±5%	±0.3PH
Response time	Temperature: 5s; relative humidity: 8s	2s	1s	1s	10s