Aluminum box weight (g) | 17.05 | 2 | 17.56 |
Box + wet soil mass (g) | 30.54 | 17.22 | 39.10 |
Box + drying soil mass (g) | 30.34 | 30.54 | 38.82 |
Mass of water (g) | 0.20 | 30.36 | 0.28 |
Dry soil mass (g) | 13.29 | 0.18 | 21.26 |
Moisture content (%) | 1.5 | 13.14 | 1.32 |
Average moisture content (%) | 1.36 |
1# | 1.39 | 1.35 | −0.20 |
2# | 1.39 | 1.42 | +0.15 |
3# | 1.39 | 1.43 | +0.20 |
4# | 2.23 | 2.2 | −0.15 |
5# | 2.23 | 2.25 | +0.10 |
6# | 2.23 | 2.28 | +0.25 |
9# | 1.14 | 1.12 | −0.10 |
10# | 1.14 | 1.1 | −0.20 |
11# | 1.14 | 1.18 | +0.20 |
Working frequency | 2.4 GHz | 2.4 GHz | 0.8/0.9 GHz |
868 MHz/915 MHz/2.4 GHz |
Coverage | 10 m | 100–200 m | Depends on network | 50–300 m |
Transmission rate | 1 M/s | 11–54 M/s | 50k–2M | 10–250k |
Power consumption | Big | Big | Small | Minimum |
Cost | High | Low | Highest | Low |
Delay | Short | Long | Shorter | Shorter |
Confidentiality | Good | Better | Good | Good |
Scalability | Difference | Good | Good | Good |
Network capacity | Small | Big | Big | Big |
Technical complexity | More complicated | Easy | Easy | Easy |
Magnesium sulfate | 1 | 0 | 0 | 0 |
2 | 1.51 | 2.24 | 1.15 | |
3 | 8.54 | 10.76 | 7.56 | |
4 | 38.25 | 42.47 | 38.69 | |
5 | 10.58 | 12.01 | 15.28 | |
6 | 5.47 | 3.76 | 6.89 | |
7 | 0.78 | 0.66 | 0.45 | |
8 | 0.12 | 0.1 | 0.1 |
Shimizu | 1 | 0 | 0 | 0 |
2 | 0 | 0 | 0 | |
3 | 0 | 0 | 0 | |
4 | 0 | 0 | 0 | |
5 | 0 | 0 | 0 | |
6 | 0 | 0 | 0 | |
7 | 0 | 0 | 0 | |
8 | 0 | 0 | 0 |