Plessey Epic PS25003 Bedienungsanleitung

PS25003 EPIC development kit user guide

Demonstration Kit Standard Components

PS25003

•Control and interface box (CIB).

•Control and interface box software (download from website).

•USB cable.

•2xPS25013 connector cables.

•Flying lead (2m long), 4mm plug to crocodile clip.

•Conductive sheet.

Demonstration Kit Sensor Options

The PS250003 is supplied with a choice of one of the following options:

•2x PS25101 sensors, or

•2x PS25102 sensors, or

•2x Single channel demonstration boards with EPIC sensors*, or

•1x Dual channel demonstration board with two EPIC sensors*

* Various EPIC sensors are available on these demonstrator boards.

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User Guide Contents

1.0 Introduction. Page 2

2.0 The EPIC sensors. 2

3.0 The Control and Interface Box. 5

4.0 The Control and Interface Box Software. 7

4.1 System Requirements 7

4.2 Software Installation 7

4.3 Software Use 7

4.4 Software Shutdown 14

5.0 Example applications. 15

5.1 Obtaining an electrocardiogram (ECG) signal 15

5.2 Obtaining other physiological signals 16

5.3 Non-contact ECG 17

TERMS and CONDITIONS 20

Introduction

The EPIC technology provides active electric potential sensors that may be used in a range

of applications.

This demonstration unit comprises a pair of EPIC active sensors and a Control and Interface

box (CIB). It is a flexible system that may be used to explore a range of applications from

electrophysiological signal detection such as ECG (EKG) and EEG through to local electric

field detection for applications such as motion sensing.

2.0 The EPIC sensors

The demonstration sets are supplied with either:

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•2x PS25101 sensors, or

•2x PS25102 sensors, or

•2x Single channel demonstration boards with EPIC sensors*, or

•1x Dual channel demonstration board with two EPIC sensors*

* Various EPIC sensors are available on these demonstrator boards

PS25101 and PS25102: These are metal body sensors. Each is terminated by a 1.5m cable

and a four pin DIN plug. The DIN plug attaches directly to the inputs of the PS25003

Control/Interface box. This sensor style is depicted below:

PS25101 or PS25102 Metal Body Sensor Showing Front and Back, Cable and Plug

The alternative sensor type to the metal body sensor is the so called ‘Compact Sensor’. An

example is shown in the images below:

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PS25201B Compact Sensor Showing Front and Back

These compact sensors are intended for surface mount in a finished system. This style of

sensor is not directly suitable for connection to the Control/Interface Box and so these

sensors are supplied on small demonstration boards that are terminated by a robust socket.

Single channel and dual channel boards are available. The image below shows examples

of these two board types:

Single Channel Demonstration Board Carrying a Compact Sensor

Dual Channel Demonstration Board Carrying Two Compact Sensors

The demonstration boards are connected to the Control/Interface Box by two PS25013

cables (supplied). These are terminated by a four pin DIN plug that attaches directly to the

inputs of the PS25003 Control/Interface box.

The details of the sensors and demonstration boards is summarised in the table below:

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Supplied

Sensor

Supplied

Quantity

Channels

Body

Style

Mounted

sensor

Sensor

Type

Freq. Range (-3dB)

Voltage

Gain

Termination

Supplementary

Component

Lower

Upper

PS25101

Single

Metal

N/A

Contact /

non-

contact

200mH

10kHz

Cable +

DIN

PS25102

Single

Metal

N/A

Contact /

non-

contact

200mH

20kHz

Cable

+DIN

PS25012A

Single

Demo

board

PS2520

Contact /

non-

contact

200mH

10kHz

Socket

PS25013

cables

(supplied)

PS25012B

Dual

Demo

board

PS2520

Contact /

non-

contact

200mH

10kHz

Socket

2x PS25013

cables(supplied

)

PS25012A

Single

Demo

board

PS2520

Contact /

non-

contact

200mH

20kHz

Socket

PS25013

cables

(supplied)

PS25012B

Dual

Demo

board

PS2520

Contact /

non-

contact

200mH

20kHz

Socket

2x PS25013

cables(supplied

)

PS25014A

Single

Demo

board

PS2540

Non-

contact

200mH

20kHz

Socket

PS25013

cables

(supplied)

PS25014

Dual

Demo

board

PS2540

Non-

contact

200mH

20kHz

Socket

2x PS25013

cables(supplied

)

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Sensor options

3.0 The Control and Interface Box (CIB)

Control and Interface box

The Control and Interface box (CIB) provides an easy interface for the evaluation of EPIC

sensors with both analog outputs and also digitised output (USB) using the internal data

acquisition (DAQ) card. The front and back panels are detailed below:

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FRONT

Control and Interface box front panel

•Power and signal socket for two sensors (channel A and B).

•Switchable gain of x1 and x10.

•Switchable low pass filtering

•Switchable notch filtering, used in conjunction with,

oNotch filter frequency selector, 50 or 60Hz

•Analogue outputs for each sensor (channel A and B)

•Analogue difference output for the two sensors (channel A - channel B)

REAR

Control and Interface box rear panel

•Earth terminal

•Driven Right Leg (DRL) circuit

oPhase selector

oGain control, x1 to x100

o4mm output socket

•A USB 2.0 interface

LOW PASS -

OUT

GAIN -

X10

NOTCH -

OUT

POWER -

A B DIFFERENTIAL

50Hz

60Hz

OFF

INPUTS

A B

OUTPUTS

LOW PASS -

OUT

GAIN -

X10

NOTCH -

OUT

POWER -

A B DIFFERENTIAL

50Hz

60Hz

OFF

INPUTS

A B

OUTPUTS

USB

EARTH

INV

NON-INV

PS25003

x1 x100

DRL Out USB

EARTH

USB

EARTH

INV

NON-INV

PS25003

x1 x100

DRL Out

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A short specification of the control and interface box is:

Parameter

min

typ

max

Units

Notes

Supply voltage –USB 2.0

5.0

Low pass filter

Notch filter frequency

50/60

attenuation

Analogue output impedance



Data acq’n resolution

bit

Sampling rate

kS/s

Output rate

150

The power for the internal electronics of the box is provided by the data acquisition card.

This is a National Instruments card, USB-6008. The internal electronics can onlybe powered

by connection of the USB port to a computer with the driver for the DAQ installed.

4.0 The Control and Interface Box (CIB) Software

The CIB requires a connection to a laptop with the associated CIB software installed. The

protocols provided by the software enable the internal data acquisition card within the CIB

and this, in turn, provides power to the other electronics within the box.

The enabled USB connection is also required if the analogue output signals from the box are

to be sent to an oscilloscope since the acquisition card is the only method of applying power

to the CIB electronics.

The CIB software provides a rolling oscillogram and a chart recorder capability.

4.1 System Requirements

The system requirements for a Windows/PC system are:

Processor

Pentium III/Celeron 866 MHz or equivalent

RAM

256 MB

Screen Resolution

1024 x 768 pixels

Operating System

Windows 7/Vista/XP/Windows Server 2003 R2 (32-

bit)/Windows Server 2008 R2 (64-bit)

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4.2 Software Installation

The software can be downloaded from the customer portal found on the internet at:

http://www.plesseysemiconductors.com/

Download and install the software before connection of the CIB to the computer.

Follow the on-screen installation instructions.

After installation has been performed a reboot of the system is required to complete the

installation process.

4.3 Software Use

Once the software is installed the CIB may be connected to a USB socket. The CIB will be

automatically detected and the driver loaded.

The software may now be started. Provided the CIB is connected and the drivers loaded

then the software will display the box:

Confirmation CIB is connected correctly - Click “OK”.

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The soft oscilloscope and data logger will now be displayed:

Start-up Screen with CIB switched off –CIB data acquisition card is active.

The CIB can now be switched on using the power switch on the CIB front panel. The red

power LED should light.

After settling an oscillogram should be generated. The example below shows a typical

difference trace (A-B) that will be obtained from a sensor held in each hand:

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