Sensor project relating to thermistor

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Discussion Overview

The discussion revolves around a project involving thermistors for temperature measurement over time. Participants explore various approaches to designing a sensor, including output options and circuit configurations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant seeks guidance on starting a thermistor-based sensor project, specifically measuring temperature versus time.
  • Another participant suggests connecting the thermistor to an operational amplifier to produce a 0-5 V output, which could then interface with a microcontroller or an ADC for further processing.
  • There is a proposal to collect data directly into a PC without a specific output display.
  • The original poster expresses a desire for a digital output displaying temperature versus time and mentions initial thoughts on using an LM75, FPGA, and Verilog, but finds it challenging.
  • There is a repeated request for websites that provide schematics for the sensor circuit, particularly for a thermistor preamplifier.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best approach to the project, and multiple suggestions and ideas are presented without resolution.

Contextual Notes

Participants have not specified certain assumptions, such as the desired accuracy or range of the temperature measurements, nor have they clarified the specific requirements for the digital output.

Who May Find This Useful

Individuals interested in electronics projects, particularly those involving temperature sensors and data collection methods, may find this discussion relevant.

vptran84
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Howdy,

I'm want to make a sensor dealing with thermistors, and i just don't know where to begin...Can someone please help me get started? The project can be anything...but I am leaning towards measuring the temperatures vs time. using thermistors. Any help would be greatly appreciated.
 
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what do you want the output to be ?
what is usually done is to connect the thermistor to an op amp , giving 0- 5 V output , then using either a microcontroller with a built in Analog to Digital converter (ADC)
or a stand alone ADC , connected to BCD to 7 segment decoder chips connected to 7 segment LEDs..
or the stand alone ADC connected to an LCD driver connected to an LCD ..
 
of course you could allways eliminate the output and collect the data (as binary) right into your pc..
 
thank you for your response...

i want the output to be in digital, and it should display the temperature vs. time.

initially, i was thinking of doing a temperature sensor using an LM75, FPGA, and verilog...and display it on a 7 segment display. But it is just too hard.

Do you know of any websites that has schematics of the sensor circuit? thanks
 
vptran84 said:
Do you know of any websites that has schematics of the sensor circuit? thanks
thermistor preamp
 

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