So what is envwi sense?
envwi sense is a wireless temperature and humidity sensor network designed by Timothy Albert and Ian Maines as a capstone project for the Electrical & Computer Engineering department at The University of Maine in Orono, Maine.
Temperature and humidity are two important concerns when monitoring the climate of a building or other space. For example, computer data centers must maintain a specific temperature and humidity level to prevent damage to equipment. Homes and other buildings must maintain certain temperatures to prevent damage to plumbing and various other systems. Some devices similar to envwi sense are home weather stations which monitor exterior conditions and display them inside a home and a smart thermostat which monitors temperature within a home.
With this in mind, envwi sense was designed to wirelessly monitor the temperature and humidity of remote locations and display that information to the appropriate personnel or systems.
envwi sense is a wireless sensor network used to display and log temperature and humidity data collected from various locations. The project has two main units. A “slave node” contains a temperature sensor and a humidity sensor. The slave node is battery powered and wirelessly transmits the temperature and humidity data, allowing it to be placed remotely. A “master node” collects all of the data transmitted from the slave nodes and stores the data in a database. The “master node” makes the values available in comma separated value (CSV) files which make it easy to open with Excel and other data analysis and statistical software. It also displays the humidity and temperature through a webpage. envwi sense can support many slave nodes. For the purpose of this senior project, only two slave nodes were built and used.
The project proposal for envwi sense may be found in Documentation. The specifications for envwi sense are as follows:
1. Measure temperature from 0ºC to 38ºC with an accuracy of ±3ºC
2. Measure humidity from 15% to 85% Relative Humidity (%RH) with an accuracy of ±8%RH.
3. Test ranges using the climate control chamber at the Advanced Manufacturing Center (AMC).
4. Design sensor circuits using unconditioned sensors to perform analog signal processing for microcontroller readings.
5. Design for sensor network communication with at least two slave nodes under 10 seconds.
The fourth specification means that the sensors must not be directly readable by the microcontroller, but must have some circuitry designed that would condition the output signal of the sensors for reading by the microcontroller.
envwi sense is a wireless temperature and humidity sensor network designed by Timothy Albert and Ian Maines as a capstone project for the Electrical & Computer Engineering department at The University of Maine in Orono, Maine.
Temperature and humidity are two important concerns when monitoring the climate of a building or other space. For example, computer data centers must maintain a specific temperature and humidity level to prevent damage to equipment. Homes and other buildings must maintain certain temperatures to prevent damage to plumbing and various other systems. Some devices similar to envwi sense are home weather stations which monitor exterior conditions and display them inside a home and a smart thermostat which monitors temperature within a home.
With this in mind, envwi sense was designed to wirelessly monitor the temperature and humidity of remote locations and display that information to the appropriate personnel or systems.
envwi sense is a wireless sensor network used to display and log temperature and humidity data collected from various locations. The project has two main units. A “slave node” contains a temperature sensor and a humidity sensor. The slave node is battery powered and wirelessly transmits the temperature and humidity data, allowing it to be placed remotely. A “master node” collects all of the data transmitted from the slave nodes and stores the data in a database. The “master node” makes the values available in comma separated value (CSV) files which make it easy to open with Excel and other data analysis and statistical software. It also displays the humidity and temperature through a webpage. envwi sense can support many slave nodes. For the purpose of this senior project, only two slave nodes were built and used.
The project proposal for envwi sense may be found in Documentation. The specifications for envwi sense are as follows:
1. Measure temperature from 0ºC to 38ºC with an accuracy of ±3ºC
2. Measure humidity from 15% to 85% Relative Humidity (%RH) with an accuracy of ±8%RH.
3. Test ranges using the climate control chamber at the Advanced Manufacturing Center (AMC).
4. Design sensor circuits using unconditioned sensors to perform analog signal processing for microcontroller readings.
5. Design for sensor network communication with at least two slave nodes under 10 seconds.
The fourth specification means that the sensors must not be directly readable by the microcontroller, but must have some circuitry designed that would condition the output signal of the sensors for reading by the microcontroller.