Testbeds for Wireless Sensor Network

hassanzeb · 10-14-2019, 11:03 PM

My supervisor told me to use a test bed for WSN. in which one wireless device and one sensor node include. PICkit 3 is a circuit debugger,
1. can i use PICkit 3 programmer (as MATLAB, Omnet++) for simulation.

business_kid · 10-15-2019, 04:10 AM

It depends on the resolution you want. PICs, IIRC, are 8 bit Microcontrollers. There may be 16/32 bit now, but it's normally 8 Bit. If it's 8 bit, that's 0-255 on the A/D which is not exact (~4mv steps for a 0-1V signal). A 16bit A/D gives 65536 steps, (~15.25x10^-6V for a 0-1V signal). You're into picovolts for a 32bit(~233 picovolts).

The datasheet has exact curves. Why not use them? BTW, if you're writing the datasheet, you need much more resolution, expensive kit. And proper test circuitry.

nini09 · 10-15-2019, 02:30 PM

What's your test plan? Some simulation tool can support it, such as NS.

hassanzeb · 10-15-2019, 11:11 PM

Quote:

Originally Posted by nini09

What's your test plan? Some simulation tool can support it, such as NS.

this is energy harvesting research.
Please read this
https://www.powercastco.com/wp-conte...Manual-A-7.pdf

business_kid · 10-16-2019, 04:11 AM

Quote:

this is energy harvesting research.
Please read this

Er, no thank you, I won't read a 1.3MB pdf to find information you should have given us. If you're in energy harvesting, what I said about signals is moot.

Look at the input voltage range. If the PIC has a 0-5 range, and you're in nanowatts or picowatts, the smallest step for any normal A/D is pretty useless. Come back with voltage & current of expected output & input, and impedance. It may be better to contract this job out. You're going to need expensive equipment sensitively applied to get accurate figures.

nini09 · 10-16-2019, 02:25 PM

The document, wp-conte...Manual-A-7.pdf, already picked PICkit 3 as development tool. You don't have choice and have to use PICkit 3.