Design an avr based power meter

[mangezi]

How do i go about this design. im confused ,i need a hint.

The meter must do the following

1. Measure input voltage, current and power for a test circuit.

2. Be a reliable, high-precision device

3. Be a low-power battery operated device

4.Provide a PC interface (details below)

o The connection must be via USB

o The GUI must provide a virtual instrument that resembles your meter (similar displays and
controls)

o The GUI must allow the user to specify an extended averaging period. This will allow him view the average power consumption over a specified long duration (eg. two minutes)

 

[crutschow]

That's a pretty ambitious project. Sounds like it needs to be microprocessor based. Are you familiar with those?

 

[mangezi]

At crutshow ,i am not familiar with the microprocessor but that what i will be using in this design .if you can help me on that, i will be very grateful. I want to use c programing

 

[blueroomelectronics]

It's obviously a school project. Post the work you've done.

 

[crutschow]

First you need to draw a block diagram of all the various functions to be performed and how the signals flow between them. Then you need to do a detailed design for what's in each block.

If you don't know microprocessors then you certainly need to learn about them. Do you know how to program in C?