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Project Requirements

Marketing Requirements

  1. Device will provide data collection methods for Figaro 2600-series gas sensors.

  2. Metal-Oxide Semiconductor based gas sensors are placed in sockets on the board for easy replacement.

  3. Data is collected and stored in a user accessible database.

  4. The device will utilize an LTE cellular connection from Particle.io to send data to the database. 

  5. Many devices can be deployed and upload data simultaneously.

  6. The system will not need to be charged daily.

  7. The device will not require a skilled technician to operate.

  8. The device will be portable and handheld.

Engineering Requirements

  1. Digital potentiometers are used to keep an analog voltage read by an 8-bit ADC near a value of 256/1023 for any Figaro 2600 sensor present.(MR1, MR2)

  2. A PostgreSQL database will provide access to breath reading data for at least one month. (MR3)

  3. There are 30 heat-up time selections for Figaro 2600-series sensors on the device from 30 seconds to 15 minutes in increments of 30 seconds. (MR1,MR5)

  4. Data values will be packaged into MQTT messages and be accessible to a Raspberry Pi. (MR3,MR5)

  5. The system will operate for 48 hours and be able to perform five tests a day. (MR6)

  6. Our database will receive at least 95% of messages sent through cellular-data within one second of data being sent. (MR4)

  7. Up to five devices can send messages to the server at once. (MR5)

  8. The device will be no larger than 2”6”3” in size. (MR8)

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