Subject: Project I: Deliverable 3. Transducer Choice Yesterday, our sales team,
ID: 2267445 • Letter: S
Question
Subject: Project I: Deliverable 3. Transducer Choice Yesterday, our sales team, along with several engineers, met with the thermometer project client. They were successful in obtaining a few We still do not have sufficient information to develop a full set of engineering requirements, but there is enough new information to proceed with the design. The new information is: more general specifications for the thermometer. - the thermometer must have a range of 0-150°F the thermometer should be accurate to ±2C" the Arduino Uno will be used in this project The information previously available be able to measure normal temperatures not too big, maybe fit in a shoebox - must be controlled with a micro processor have some visual display of the temperature The teams may draw on the available supplies to work on their designs. (Parts supplied by the team must be approved for this project.) The customer has indicated he would like to see prototypes demonstrated on the 13 or possibly the 15th of February Deliverable: The teams must choose a temperature transducer from the list below. Create a pairwise matrix and a decision matrix to guide your choice. The least four criteria and you must choose from at least four of the transducers available The assignment is due Monday, January 29, at 10:00pm but may be submitted any time without a late penalty. The teams will not be given a transducer until this assignment is completed satisfactorily. The Arduino kits may be available on Tuesday, January 30. pairwise matrix must have at TMPO4 B57164K LM335 LM34 LM334 AD 592 MP37LM61Explanation / Answer
Given that several engineers met with the thermometer project client.
Given that the thermometer must have a range of 0-150oF, it must be accurate to + or - 2oC.
Arduino Uno is used in this project.
Also given that it should be able to measure normal temperatures, it should be fit in a shoe box. It must be controlled with a micro-processor and have some visual display.
The device must be TO-92 package.
From the given temperature transducers which are available,
We can select the transducers TMP37 , LM61 , LM335, LM334 ( reference DigiKey)
Pairwise matrix is a comparison matrix which will show the comparison of the properties of the devices.
Pairwise matrix is a square matrix, hencce as the four devices are there for comparison, then choose the four properties of each device.
The four properties which can be compared are (all are TO-92 Package)
A.Price
B.Voltage supply
C.Output Type
D.Mounting types
(TMP37FT9Z-ND) (LM61CIZ/NOPB-ND) (497-2977-5-ND) (LM334Z#PBF-ND)
A- Price $1.58 $0.98 $1.34 $1.581
B- Voltagesupply 2.7-5.5V 2.7-10V 2.7-5V 0.8-40V
C- Output Type analog analog analog analog
D-Mounting types through hole through hole through hole through hole.
Hence from the abvove matrix we can say that the price of the LM61CIZ/NOPB-ND is very less compare to the other devices which is $0.98 , And the operating temperature is also in the range of given range in TO-92 package.
The part number of the device is LM61CIZ/NOPB and produces by texas instrument.