EPS@ISEP | The European Project Semester (EPS) at ISEP

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report [2017/06/27 18:06] – [7.7 Test and Results] team4report [2017/06/27 19:23] (current) – [7.4. Internal Systems] team4
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-=== 7.4.3 Water Level Warning System === +=== 7.4.3 Flowchart === 
-The team decided to use a float sensor to check the water level on a certain (critical) point. If the water level goes lower than this point, the control system activates a red warning LED light. This red LED light informs the user about the low water level inside the water tank, so they can fill the tank manually with water. The float sensor is fed separately from the Arduino Uno. This way the float sensor is always working, even if the power switch is inactive.+Figure {{ref>flowchart}} shows the general flowchart of the different systems that are controlled by the internal system.
  
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 +<figure flowchart>
 +{{ :flowchart.jpg?800 |}}
 +<caption>Flowchart</caption>
 +</figure>
 +</WRAP>
 +
 +The detailed working of these different systems will be described further in this chapter.
 +
 +=== 7.4.4 Water Level Warning System ===
 +The team decided to use a float sensor to check the water level on a certain (critical) point. If the water level goes lower than this point, the control system activates a red warning LED light. This red LED light informs the user about the low water level inside the water tank, so they can fill the tank manually with water. The float sensor is fed separately from the Arduino Uno. This way the float sensor is always working, even if the power switch is inactive.
  
 To prevent rainwater overflowing the water tank, the team decided to use a floating valve, which blocks the entrance of the water supplie from the rainwater collector. Figure {{ref>floatvalvesystem}} shows the system of the floating valve. To prevent rainwater overflowing the water tank, the team decided to use a floating valve, which blocks the entrance of the water supplie from the rainwater collector. Figure {{ref>floatvalvesystem}} shows the system of the floating valve.
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- +=== 7.4.5 High Temperature System ===
-=== 7.4.4 High Temperature System ===+
 The temperature sensor will sense the temperature and print the value on the monitor. It works together with the rain sensor. When it's not raining and the temperature is below 30°C, the motor will be activated and the summer cover will open. This way the plants warm up and get their solar energy. The opening of the summer cover will be printed on the monitor. When the temperature starts to rise above 31°C and it's still not raining, the motor will turn the other way around and the summer cover will close again. This way, shadow is provided to the plants. The closing of the summer cover will be printed on the monitor as well. The temperature sensor will sense the temperature and print the value on the monitor. It works together with the rain sensor. When it's not raining and the temperature is below 30°C, the motor will be activated and the summer cover will open. This way the plants warm up and get their solar energy. The opening of the summer cover will be printed on the monitor. When the temperature starts to rise above 31°C and it's still not raining, the motor will turn the other way around and the summer cover will close again. This way, shadow is provided to the plants. The closing of the summer cover will be printed on the monitor as well.
  
 The activation of the motor were set on the temperatures 29°C and 32°C to make a kind of hysteresis. To get even more smoothing  and prevent the motor from changing directions all the time. An average of the last ten readings will be made and this average will be used to control the motor. This way, a sudden change is smoothed out and doesn't change everything directly.  The activation of the motor were set on the temperatures 29°C and 32°C to make a kind of hysteresis. To get even more smoothing  and prevent the motor from changing directions all the time. An average of the last ten readings will be made and this average will be used to control the motor. This way, a sudden change is smoothed out and doesn't change everything directly. 
  
-=== 7.4.5 Low Temperature Warning System ===+=== 7.4.6 Low Temperature Warning System ===
 A yellow LED on the outside of The GreenHouse shows the user when the winter cover must be placed on the product. The temperature sensor will provide the control system with the necessary information. When the temperature drops under 5 °C, the yellow LED lights up. This means the customer must place the winter cover on The GreenHouse. The yellow LED light will keep lighting up for the time the winter cover is needed. When the temperature goes over 6 °C, the yellow LED light will stop lighting up, meaning the winter cover is no longer needed. A yellow LED on the outside of The GreenHouse shows the user when the winter cover must be placed on the product. The temperature sensor will provide the control system with the necessary information. When the temperature drops under 5 °C, the yellow LED lights up. This means the customer must place the winter cover on The GreenHouse. The yellow LED light will keep lighting up for the time the winter cover is needed. When the temperature goes over 6 °C, the yellow LED light will stop lighting up, meaning the winter cover is no longer needed.
  
-=== 7.4.6 Heavy Rain System ===+=== 7.4.7 Heavy Rain System ===
 The rain sensor will sense if there is rain and print if it is raining or not on the monitor. It works together with the temperature sensor. If the temperature is below 30°C and it's not raining, the motor will turn and the summercover will open. When the temperature is below 30°C and it's raining, the motor will turn the other way and the summer cover will close. In this temperature situation, the cover should normally be opening so the plants can get their solar energy. But in this case the rain sensor will overrule the temperature sensor and close the summer cover anyway. This way, the plants are protected from to much rain. The rain sensor will sense if there is rain and print if it is raining or not on the monitor. It works together with the temperature sensor. If the temperature is below 30°C and it's not raining, the motor will turn and the summercover will open. When the temperature is below 30°C and it's raining, the motor will turn the other way and the summer cover will close. In this temperature situation, the cover should normally be opening so the plants can get their solar energy. But in this case the rain sensor will overrule the temperature sensor and close the summer cover anyway. This way, the plants are protected from to much rain.
  

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