Progress 4
Oct 14th
Goal:
- Measure voltage of different environment connecting with LED.
- In order to achieve control of PID controller, target value of voltage needs to be set between A and D
| Group | Environment | Operation | LED | Voltage | Note |
|---|---|---|---|---|---|
| 1 | Day (Strong external light) | Turn on light and no cover on the green house (Fig. 1) | Turn off LED | A | Treatment Group |
| 2 | Night but turn on light (Weak external light) | Turn on light but has cover on the green house (Fig.2) | Turn off LED | B | Treatment group |
| 3 | Night but turn on light (Weak external light) | Turn on light but has cover on the green house (Fig.2) | Turn off LED | C | Treatment group |
| 4 | Night (No external light) | Turn off light | Turn on LED | D | Control group |
Problems:
- Light intensity of LED is too weak to provide enough light for model. Therefore, it is just used for presentation.
Solutions:
- Adjust the location of LED and let them closer to sensor so that the light intensity is more sensitive.
Fig.1
Fig.2