Bio potential simulator

BIO POTENTIAL SIMULATOR

Instructor: Evgeniy KuksinPreformed by: Ziv Landesberg

Duration: 1 semester

Introduction

Bio potential detector measures the electric potentials on the surface of living tissue . Bio potential detection is useful in many medical application such as ECG, EMG, AND EEG MONITORS.

Therefore is also useful to have the ability to test the Bio potential detector by a bio potential simulator.

Project goal

The project goal is to implement a controller of a bio exponential simulator. The controller should control the signal at the output of the simulator.

Real system description

host

PCB

FPGA

Material like living

tissue

Description of the system that shall be implemented

Signal generator

(after analog detection

and integration)

FPGA D/A 5382

D/A 5382

D/A 5382

D/A 5382

A/D 7961

FPGA code structure

The code on the FPGA shall be divided to two main parts.

The first part is the calibration of the D/As’ m and c registers. This registers should allow to digitally set the slope to 1 and to eliminate the bias.

The second stage is the normal running of the system, which continuously reading values from the dram and sending them to the D/As.

Project requirements

FPGA that can be programmed using LABVIEW

LVDS card(for debugging) PCB with 4 DACs and 1 ADC

Reg,addres(always changed at same time)

data

Wr’

ldac

Wait to host

DACs timings at calibration

value

value

sdout

din

sck

cnv

Start new cycle at host command

ADC timings at calibration

read

clockwrite

clock

read

write

clock

Reg,addres(always changed at same time)

data

Wr’

ldac

Wait to busy

Repeat 32 times

Wait for output stabelize/wanted freq(optional)

Dacs timings at normal runing

value

value

readRead next 32Values from dram

Estimated time linesStage 1 :build the calibration code

Stage 2: write the code of the regular running of the system

Stage 3: create the signal generator in labview

15 decemberl

30 november

15 november 31 october Estimated date

Stage 1

Stage 2

Stage 3

Yellow- means partially doneRed- means need to be done