Sensors

Sensors

• phyWAVE-A-Eval-Board with equipped phyWAVE-KW22 processor/radio-module

   ![Phytec PBA-D-01 PhyWave](https://github.com/jremmert-phytec-iot/Pictures_Phytec_IOT/blob/master/EvalBoard_2.png)
  

• Temperature * MPL3115A2 Sensor for measuring pressure in Pascal and temperature in degree Celsius (°C). The digital output interface is a I2C bus. The sensor is directly on the phytec board.

• Humidity * HDC1000 This sensor is for measuring the humidity and is directly build on the phytec board. It's value is represented in a relative humidity and is given in percantage (%).

• Noise * SEN 12624 Sparkfun Sound detector

    ![Sound detector sparkfun SEN 12624] (https://github.com/smartuni/SmartWindow/blob/master/Doc/sound%20detector.jpg)
  
  
     This sensor board is a microphone board for measuring the sound.
     A Hookup Guide can be found [here] (https://learn.sparkfun.com/tutorials/sound-detector-hookup-guide)
  
     To calculate the sound pressure level the following definitions and formulas are used. 
     First the signal from the microphone is used to calculate the RMS(Root mean square). After this step        a factor is multiplated with the RMS-Value. The RMS-Value is referencend to the value p0 = 20µPa and it will be calculated to the logarithmic Decibel.
  
     ![Formula to calculate the sound pressure level](https://github.com/smartuni/SmartWindow/blob/master/Doc/formula%20noise.png)
  
     Lp is the sound pressure level in decibel (dB).  
  

• Air Quality * MQ_135