1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] May 8, 2012
Name-Surname KritsakornWeekana
Student ID. 54261502
Group Name Id(instinct design)
Engineering Team Kung 2b
Members
Product Design P’ploy
Team Members P’jub
Weekly Progress
Today I test CO2 sensor, Sensor Heating voltage supplied from other circuit , When its surface
temperature is high enough , the sensor equals to a cell, its two sides would output voltage signal
,and its result accord with Nernst’s equation。 In sensor testing, the impedance of amplifier should
be within 100—1000GΩ，Its testing. Out put is 135mV-70m v , it isn’t 30mv-50mv
Figure 1B .Testing Circuit
Engineering Analysis
Strong Point
-I used op-amp is
Week Point
-impedance of amplifier should be within 100—1000GΩ
Next Week Job
-Setting circuit and device to structure of product.
Department of Control System and Instrumentation Engineering
KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI