Converting Temperature sensors analog output to digital values for RF communication

[akshay nalawade]

Hii 

 

I want to convert temperature sensors output voltage of  5mv/degree celsius into digtal bits.

 

The range of Temperature sensor is -25to400 degree celsius

 

I will be using k type thermocouple with AD8495 which will give me an output voltage of 5mV/degree celsius.

 

I also want to use RF communication to send these digital bits continously from transmitter to receiver.

 

The receiver should send these values to the micro controller for displaying the temperature and I also want to use those values for controlling some other system.

 

What are the possible ways to achieve this.  

[Ashutosh Bhatt]

select 10 bit ADC. so fro 0-5V analog input its resolution will be 5 / 1024 = 4.88 mV

so ADC digital output will change by one bit with 5 mV change in input.

to transmit this value on RF channel use RF encoder-Decoder chips like HT12E – HT12D and RF Tx – Rx pairs.

 

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