1) Junjira Nakiam and their group id discussed choosing a carbon dioxide gas sensor for their product design project. 2) The sensor can detect CO2 levels between 350-10,000 ppm and operates on 6V. It outputs a signal of 30-50 mV that will be amplified for processing. 3) A block diagram shows the sensor detecting indoor and outdoor CO2 levels and comparing the difference, with the results displayed on an LCD screen.

1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] March 7, 2012
Name-Surname Junjira Nakiam
Student ID. 53211835
Group Name id (instinct design)
Engineering Team Top 53211816
Members Bos 53211810
M 53211801
Product Design P’Ploy
Team Members P’Jub
Weekly Progress
Today my company are discussion project. We are choose
technology about carbon dioxide gas sensor . Carbon Dioxide
gas sensor for use in a wide range of applications. The sensor is
easy to use and can be easily incorporated in a small portable
unit. The detection of sensor is range 350 – 10000 ppm CO2 and
heater voltage is 6.0 Volt . So the sensor have a process by turn
on the power supply into sensor. And the sensor are evaluate
data signal output is 30 – 50 mV.
Figure 1 Sensor.
Block Diagram is show a process of work. To use a
sensor for detected outdoor gas CO2 reference and
detected inside container gas CO2 and take to compare
difference value. After compare , the signal are amplified
for the logic process and to be use show the result with
LCD Display.
Figure 2 Block Diagram.
Engineering Analysis
Strong Point
- My Project have a basic process of work that develop working for apply to
actual use.
Week Point
- My process is lack of information about quantity waste gas in the food.
- The sensor is have a low resolution for detected.
Next Week Job
- Architecture and Engineer are discussion in working process about function
application and show the result in LCD.
Department of Control System and Instrumentation Engineering
KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI