Virgilio Mattoli July/20/04

CRIM pag 1/5

Experimental Setup for Gauge Measurement

Experimental Setup Overview

PC - Laptop

MicrocontrollerModule

Amp

PowerAmp

Amp

DisplacementActuator

DisplacementTransductor

Agilent 34401A – Precision Multimeter

4-Wireresistance

measurement

ForceTransducer

Module(with PreAmp)

RS232SerialComm

RS232Serial Comm

Ext.Trigger

Sensor

DisplacementModule

Virgilio Mattoli July/20/04

CRIM pag 2/5

Experimental SetupMicrocontroller Module

Microcontroller Module (1/2)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

PIC

18F

252

100nf

27nf

27nf

10K

10 MHz

5V

RX

TX

820 Ω

Ch 2

Ch 1

Ch 0

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

MAX232

Vcc

GND

T2in

R2out

C1+

V+

C1-

C2+

C2-

V-

T2out

R2inTTLRS232

+

+

+

+

+

RS 232 In

RS 232 Out

1f

1f

1f 1f

1f

5V

Trig OUT

An0 Input

An1 Input

An2 Input

PWM OUT

Serial RS232DB9 Connector (Female)

1 2 3 4 5

6 7 8 9

PC-TXPC-RX PC-GND

RS 232 Out

RS 232 In

Microcontroller Module (2/2)

Virgilio Mattoli July/20/04

CRIM pag 3/5

Experimental SetupMicrocontroller Module

Connection with Displacement ModuleInput for Opto Isolated Power Amp

_

+

X 10LM6152

2K

18K

5V

An1 Input

200nf

4,7K

ConctN1

1

2

5V

_

+

X5LM6152

2,2K

12K

An1 Input

200nf

4,7K1

2

3

ConctN2

Connection with Ext. Trig. Of Agilent 34401A TTL Output for trigger synchronization

Trig OUT

ConctN3

1

2

PWM OUT

ConctN4

1

2

Connection withForce Transducer Module

Connection with Displacement ModuleDisplacement Transducer Conditioning

Displacement Module

Virgilio Mattoli July/20/04

CRIM pag 4/5

Experimental SetupDisplacement Module

Optoisolator6N137

1

2

3

4

8

7

6

5

To connect to ConctN4

1

2PWM signal

1K

DisplacementTransducer

1

2

3

To connectto ConctN2

15V (Isolated fromMicro Module)

_

+

LM675

1 μf

2K

GND (Isolatedfrom Micro Module)

12V (Isolated fromMicro Module)

300R

0,1 μf

To the COIL(Inductive Load)

1R – Power(> 5W)

-15V (Isolated fromMicro Module)

-15V(Isolated …) 0,22 μf

1R

100 K

GND(Isolated …)

Jumper for safety start upOpen after PWM activation!!!

GND(Isolated …)

GND(Isolated …)

Potentiometer foroffset regulation

Force Transducer Module

Virgilio Mattoli July/20/04

CRIM pag 5/5

Experimental SetupForce Transducer Module

Force

ForceTransducer

To connectto ConctN1

1

2

Signal Conditioner GM

by Sensortech

+Exc- Exc+Signal- Signal- Output+OutputL2NOL2NCL2ComL1NCL1NOL1ComChassisAC LoAC Hi

AC 110V @ 60Hz