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7/31/2019 Fault Diagnostic System With Sms2
http://slidepdf.com/reader/full/fault-diagnostic-system-with-sms2 1/26
Supervision Made Easier……
7/31/2019 Fault Diagnostic System With Sms2
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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.
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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 ?
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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.”
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Need of fault diagnosis:
Pinpoints Problems.
Determines the Health of the System
Improves Operation Reliability.
Reduces Operational Cost.
Improves Maintenance.
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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.
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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.
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List of hardware used: Components
MICROCONTROLLER AT89S52
2X16 LCD
BUZZER
MAX232
ADC0809
GSM MODULE
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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
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PCB Layout:
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Detail Circuit Diagram:
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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.
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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.
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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.
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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.
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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:
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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.
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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.
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Flow Chart:
Start
Configure LCD
Declaration of Variables
Initialization of Ports/Variables
1
1
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Measure AC Voltage
Read Status of Fuse 1
Delay 20 ms
Measure ACCurrent
Read Status of Fuse 3
Read Status of Fuse 2
LOOP
1
42
2
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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
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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
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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.
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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.
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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.
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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.