fault diagnostic system with sms2

7/31/2019 Fault Diagnostic System With Sms2

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Supervision Made Easier……



COMPANY PROFILE:

KVS Technologies is a partnership company promoted and managed by Kalpesh R. Vaghela and Shankar P. Sapavadiya.

Main area of interest is with pharmaceuticalindustries.

KVS Technologies Provides Validation,

Services to the Pharmaceutical,Biotechnology and Medical DeviceIndustries.



OUTLINE:

Introduction: What is Fault Diagnosis?

Importance: Requirement of fault diagnosis ?

Components: What is involved?

Overview: How does the Hardware Work?

Algorithm Details: How does it Work?

Scope: Fault Diagnosis in Different Fields ?



What is Fault Diagnosis?

Fault: The partial or total failure of a device ora system.

Diagnosis: The ability to recognize where

exactly has a failure taken place in the deviceor a system

Detection: The ability to recognize that a

fault has occurred in a device or a system.

“Hence , Fault Diagnosis is nothing but thedetection of any fault in a given device or system.”



Need of fault diagnosis:

Pinpoints Problems.

Determines the Health of the System

Improves Operation Reliability.

Reduces Operational Cost.

Improves Maintenance.



Need of fault diagnosis: Cont…..

If Faults are recognizedearlier they can becorrected and any

damage to the systemcan be avoided.

Accidents and Loss of

Productive time can beavoided.



Need of fault diagnosis: Cont…..

With a SMS systemattached to it thesupervisor and the

stations close by canbe directly alerted without any wasting

any time.



List of hardware used: Components

MICROCONTROLLER AT89S52

2X16 LCD

BUZZER

MAX232

ADC0809

GSM MODULE



BLOCK DIAGRAM:

N 1

N 2

N 1

N 2

D2

N 1

N 2

- +

N 1

N 2

- +

AT89S52

A UX

P O W E R

CD 4093ADC 0809

2 1 6 LC D

DR I VE R

D R IVER R ELAY

BUZZE R

M A X

232

G S M

M O D E M

L L L

230 V

230 V

5 V 12 V

AC V AC A

M M M

LM358



PCB Layout:



Detail Circuit Diagram:



Block Diagram Description:

Voltage and Current are sensed by terminal PT and CT

respectively.

Detector circuit gives DC voltage proportion to the AC

parameters.

ADC measures this DC voltage and gives digital output.

This digital output is measured by microcontroller andmeasured values are displayed on LCD.



Block Diagram Description: Cont..

We can set voltage and current limit using

switch board.

If the voltage or current parameter measured

value exceeds the limit, alarm is created and

load is tripped and a SMS is send to otherstation with the help of the GSM modem.



Block Diagram Description: Cont…

In addition we are sensing the status of three fuses

through 3 points.

If fuse failure is there, the respective transistor conducts

and output becomes low.

This is sensed by the microcontroller and the status is

displayed on the LCD. It also generates a local alarm and sends SMS to other

station through GSM modem.



Functions of the blocks used:

Microcontroller:

AT89S52 microcontroller is used

here to which are attached an LCD,

Buzzer and a relay.

AT89S52 is a low power , high-

performance CMOS 8–bit

microcontroller with 8K bytes of in-

system programmable Flash

memory.



LCD: A 2×16 LCD is used for displaying the fuse, the voltage and current status.

Buzzer:

It sounds when the value of voltage or current increases beyond the pre-

defined value or when any of the fuse fails.

Relay:

This part is for the purpose of disconnecting the power supply when the

balance reach zilch.

Functions of the blocks used:



Functions of the blocks used: Cont…

ADC0809:

CD4093 is a Schmitt gate and a 10k resistor with

1ηF capacitor gives 10 µsec clock which is required

for ADC0809. ADC reads the DC voltage from the

voltage detector and current detector . It gives the

digital output which is read by the

microcontroller and displayed on LCD.



Functions of the blocks used: Cont…

MAX 232:

Max 232 is required for interfacing the controller and GSM modem

GSM Modem:

It takes serial input from microcontroller and sends SMS to the

telephone number programmed. The GSM system is a frequency and

time division system; each physical channel is characterized by a carrierfrequency and a time slot number. A GSM system frequency includes

two bands at 900 MHz and 1800MHz commonly referred as GSM-900

and DCS-1800.



Flow Chart:

Start

Configure LCD

Declaration of Variables

Initialization of Ports/Variables

1

1



Measure AC Voltage

Read Status of Fuse 1

Delay 20 ms

Measure ACCurrent



LOOP

1

42

2



Is SW 1pressed ?

Send SMS

Set Limits

Send SMS

Send SMS

Give OVALARM

Give OVALARM

Is SW 4pressed ?

Is AC V >OVLIMIT

?

Is AC V <OVLIMIT

?

No

No

No

No

Yes

Yes

Yes

Yes

3

2

3



CLS

Display Parameters on

LCD

Give Fuse Failure Alarm

Send SMS

Reset Alarm

Is FuseFailure ?

IsParameter

OK ?

Is AC A >OCLIMI

T ? Give OCALARM

Send SMS

No

No

No

Yes

Yes

Yes

34



Scope:

Fault diagnosis is a complex interdisciplinary research fieldthat covers a wide and diverse range of engineering and

science areas.

System modeling and identification, applied mathematics,

reliability and risk analysis, computing, communication,

control, signal processing, sensors and actuators as well as

hardware and software implementation techniques all

require fault diagnosis.



Scope Cont….. :

It also has a very wide application area

including many safety critical , life critical, and

mission critical engineering systems in

aerospace ,electrical, computer, and software

engineering, mechanical and manufacturing ,chemical and petrochemical, medical and

biomedical engineering etc.



Scope Cont….. :

In the drive towards good manufacturing

practice and towards guaranteeing safe and

efficient operation of end products under

disturbed or fault conditions, support to and

automation of fault analysis is essential.



Scope : Cont…..

Occurrence of faults or equipment failure is a major cause

of suboptimal operation.

There is a growing realization that maintenance of the

equipment and the control loops in the face of such fault

is the key to achieving long term economic success.

As a new emerging area in automatic control, faulttolerant control has attracted more and more attention in

recent years.

fault diagnostic system with sms2

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