Time: 9.00 a.m
Place: Open access UniKL BMI
Activity:
- Today, I do some survey about the price of the carbon dioxide sensor and humidity sensor. A carbon dioxide sensor is an instrument for the measurement of carbon dioxide gas. The most common principles for CO2 sensors are infrared gas sensors (NDIR) and chemical gas sensors. Measuring carbon dioxide is important for monitoring indoor air quality.
- A humidity sensor senses, measures and regularly reports the relative humidity in the air. It measures both moisture and air temperature. Relative humidity, expressed as a percent, is the ratio of actual moisture in the air to the highest amount of moisture air at that temperature can hold. The warmer the air is, the more moisture it can hold, so relative humidity changes with fluctuations in temperature.
- Most humidity sensors use capacitive measurement to determine the amount of moisture in the air. This type of measurement relies on two electrical conductors with a non-conductive polymer film lying between them to create an electrical field between them. Moisture from the air collects on the film and causes changes in the voltage levels between the two plates. This change is then converted into a digital measurement of the air’s relative humidity after taking the air temperature into account.
- Next, I find also the circuit of the humidity sensor and carbon dioxide sensor by using the Arduino circuit. Arduino is an open-source computer hardware and software company, project, and user community that designs and manufactures single-board microcontroller and microcontroller kits for building digital devices and interactive objects that can sense and control objects in the physical world.
- A humidity sensor senses, measures and regularly reports the relative humidity in the air. It measures both moisture and air temperature. Relative humidity, expressed as a percent, is the ratio of actual moisture in the air to the highest amount of moisture air at that temperature can hold. The warmer the air is, the more moisture it can hold, so relative humidity changes with fluctuations in temperature.
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| Price of humidity sensor |
- Most humidity sensors use capacitive measurement to determine the amount of moisture in the air. This type of measurement relies on two electrical conductors with a non-conductive polymer film lying between them to create an electrical field between them. Moisture from the air collects on the film and causes changes in the voltage levels between the two plates. This change is then converted into a digital measurement of the air’s relative humidity after taking the air temperature into account.
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| Price of CO2 sensors |
- Next, I find also the circuit of the humidity sensor and carbon dioxide sensor by using the Arduino circuit. Arduino is an open-source computer hardware and software company, project, and user community that designs and manufactures single-board microcontroller and microcontroller kits for building digital devices and interactive objects that can sense and control objects in the physical world.
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| Arduino circuit with humidity sensor |
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| CO2 sensors hardware |
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