Difference between revisions of "Team:NCKU Tainan/Temperature"

 
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        <h1 class="head">Thermometer DS18B20</h1>
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                <h1 class="head">Thermometer DS18B20</h1>
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                                         <ul>
 
                                         <ul>
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                                             <li>As the buffer solution wouldn’t change too much in the
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                                             <li class="none">As the buffer solution wouldn’t change too much in the
 
                                                 environment, we used the buffer solution to calibrate the pH meter to
 
                                                 environment, we used the buffer solution to calibrate the pH meter to
 
                                                 ensure that the deviation would be the same every time.</li></br>
 
                                                 ensure that the deviation would be the same every time.</li></br>
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                                         <ul>
 
                                         <ul>
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                                             <li>We put our thermometer into the incubator. We wire the sensor
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                                             <li class="none">We put our thermometer into the incubator. We wire the sensor
 
                                                 with the LCD to keep it closed.</li></br>
 
                                                 with the LCD to keep it closed.</li></br>
 
                                         </ul>
 
                                         </ul>
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                                         <li>Result</li></br>
 
                                         <li>Result</li></br>
 
                                         <ul>
 
                                         <ul>
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                                             <li>We placed the sensor in an environment of incubator 37 degrees celsius, and the
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                                             <li class="none">We placed the sensor in an environment of incubator 37 degrees celsius, and the
 
                                                 temperature measured by the LCD display sensor was 37.06 degrees celsius. The
 
                                                 temperature measured by the LCD display sensor was 37.06 degrees celsius. The
 
                                                 error is
 
                                                 error is
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                                         <li>Purpose</li></br>
 
                                         <li>Purpose</li></br>
 
                                         <ul>
 
                                         <ul>
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                                             <li>Since the error value of the temperature sensing device is not
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                                             <li class="none">Since the error value of the temperature sensing device is not
 
                                                 necessarily, we use multiple sampling methods, and then average the
 
                                                 necessarily, we use multiple sampling methods, and then average the
 
                                                 values measured in each temperature interval to reduce the error value
 
                                                 values measured in each temperature interval to reduce the error value
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                                         <ul>
 
                                         <ul>
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                                             <li>We use the above method to take 150 strokes as training data, and use
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                                             <li class="none">We use the above method to take 150 strokes as training data, and use
 
                                                 the basic accessories of MATLAB to find the appropriate nine
 
                                                 the basic accessories of MATLAB to find the appropriate nine
 
                                                 temperature model formulas.</li></br>
 
                                                 temperature model formulas.</li></br>
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                                         <ul>
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                                             <li>We found a temperature curve of 7th order to reduce its error. (You can
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                                             <li class="none">We found a temperature curve of 7th order to reduce its error. (You can
 
                                                 see more
 
                                                 see more
 
                                                 information in <a href="https://2018.igem.org/Team:NCKU_Tainan/Software#Temperature"
 
                                                 information in <a href="https://2018.igem.org/Team:NCKU_Tainan/Software#Temperature"
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Latest revision as of 21:31, 17 October 2018

Thermometer DS18B20

In this section, we are showing how to use DS18B20 one wire water proof thermometer.

Motivation


E. coli is temperature sensitive. According to the experiment, it grows the best in 37°C (99°F), and its acceptable range is about 22°C to 40°C (72°F to 104°F). Therefore, we need a thermometer to monitor the medium's temperature to ensure the E. coli works well in the reactor.



Experiments


  • Experiment 1: Temperature measuring

    1. Purpose

      • As the buffer solution wouldn’t change too much in the environment, we used the buffer solution to calibrate the pH meter to ensure that the deviation would be the same every time.

    2. Method

      • We put our thermometer into the incubator. We wire the sensor with the LCD to keep it closed.

    3. Result

      • We placed the sensor in an environment of incubator 37 degrees celsius, and the temperature measured by the LCD display sensor was 37.06 degrees celsius. The error is 0.06 degrees celsius, which we think it's not a big error. But in order to make the measure temperature more accurately, we designed Experiment 2 - Temperature experimental curve fitting.

  • Experiment 2: Temperature experimental curve fitting

    1. Purpose

      • Since the error value of the temperature sensing device is not necessarily, we use multiple sampling methods, and then average the values measured in each temperature interval to reduce the error value without excessive error.

    2. Method

      • We use the above method to take 150 strokes as training data, and use the basic accessories of MATLAB to find the appropriate nine temperature model formulas.

    3. Result

      • We found a temperature curve of 7th order to reduce its error. (You can see more information in software temperature.)


    4. Materials used

      1. Arduino UNO

      2. DS18B20 thermometer
        1. Power supply range is 3.0V to 5.5V
        2. Measures temperatures from -55°C to +125°C (-67°F to +257°F)±0.5°C accuracy from –10°C to +85°C (14 to 185°F)

      3. a register of 4700 ohms

      4. Arduino Code

Wiring


Reference


  1. Konstantin Dimitrov.(2016).Arduino Thermometer With DS18B20. Retrieved from
    https://create.arduino.cc/projecthub/TheGadgetBoy/ds18b20-digital-temperature-sensor-and-arduino-9cc806




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