Download A presntation on Office security system

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Presentation
On
Office security system
Group Members:
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Md. Emdadul Haque
Md. Sahed Hasan
Md. Samsul Arefin
Khokan Das
Amit Halder
Md. Belayet Hossain
08310102
08510018
08410067
07510036
09310129
10310294
What is office security system?
Office security system is the process,
which will protect a office from natural
and man made threat. This security
system can alert office of a intrusion in
any entry point of the Workers. It is also
alert the peoples in an emergency.
Different parts of the Security
system
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Fire Hazard protection
Burglar protection
Power backup system
Electrical fault protection system
Control Unit:
The control unit is connected with all the
detection devices. The control unit is programmed to
correctly know which part of the office the signal is
coming from.
Functions of the control unit are:
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Detecting the location of the threat
Detecting the type of threat
Following pre-planned tasks based on the information
Fire Hazard Protection
System
A fire hazard protection system
protects a office against fire and fire
related threats. The system can detect
the presence of fire or fire related
hazard and activate alarms to make the
office aware of the threat.
Basic Functions of the Fire
hazard Protection System
The fire hazard protection system has the
following function:
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1. Detecting Fire
2. Detecting the position of the threat
3. Activating alarms (visual and audible)
4. Providing users with necessary information of the threat
5. Post detection actions (based on the severity of the threat)
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a. Activating the sprinkler system
b. Informing fire service with auto dialer system
c. Activating emergency lights for evacuation
Components of the Fire
hazard Protection System:
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i. Detection Devices
ii. Control Unit
iii. Central Alarm System
iv. Fire Extinguishing System
v. Auto dialer
Fire Suppression
Requirements
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Water supply
Type of automatic fire extinguishing
system
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Water-based fire extinguishing system
Non-water-based fire extinguishing system
Standpipes and fire department hose
outlets
Component to Detect fire
Smoke detector
Smoke detectors are devices which can
detect the presence of smoke. A smoke
detector detects the smoke particles and send
appropriate signal to the control unit.
Heat Detector
Heat detector is a device which can detect
the temperature of the nearer area. In this
device a hit sensitive resistor or capacitor is
used which resistance or capacitance is
changed with temperature.
Other component
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Fire Blankets:
Fire blankets are blankets made of
special fire resisting materials. If the
escape path of the residence is blocked
by fire, it becomes extremely difficult for
the residents to escape without
sustaining
Water line pipe:
This is very important when fire is
occurred. Its help the fire brigade as
internal source of water.
Position of Device in office
Sprinkler water supply system
Burglar Alarm System
Burglar alarms are electronic alarms
designed to alert the user to a specific
danger. Sensors are connected to a control
unit via low-voltage wiring or a narrowband
RF signal which is used to interact with a
response device. The most common security
sensors are used to indicate the opening of a
door or window or detect motion via passive
infrared (PIR).
System of Burglar Alarming
Types of device
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PASSIVE INFRARED DETECTORS
ULTRASON
MICROWAVE DETECTORSIC DETECTORS
PHOTO-ELECTRIC BEAMS
GLASS BREAK DETECTORS
VIBRATION
MICROPHONIC SYSTEMS (SHAKER) OR
INERTIA SENSORS
Position of Alarming device
Alarm
Alarming System means that, when
any part of system break or fire
produce or Burglar founded then it will
active and give the signal to user.
Types of alarm system
1.
2.
Audio alarm
Visual Alarm
Alarming System
Audio Alarm
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In this system we use audio alarm.
When any type of incident will
happen then detector device detect
this and will sent to the control
unit. Then control unit drive the
alarm and take necessary steps.
Visual Alarm
In this system a visual
alarm system is also used.
When any type of incident will
happen then detector device
detect this and will send to the
control unit. Then control unit
drive the Visual alarm and take
necessary steps.
Power Back up System
Emergency power systems are a type of system,
which may include lighting, generators, fuel cells and other
apparatus, to provide backup power resources in a crisis or when
regular systems fail. They find uses in a wide variety of settings
from residential homes to hospitals, scientific laboratories, data
centers, telecommunication equipment and modern naval ships.
Emergency power systems can rely on generators, deep cycle
batteries, flywheel energy storage
Types
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Short run Backup
- Run by IPS,UPS, Battery.
Long run Backup
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After end of short run
System will run by Generator, flywheels for high power
users.
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An uninterruptible power supply, also
uninterruptible power source, UPS or battery/flywheel
backup, is an electrical apparatus that provides
emergency power to a load when the input power
source, typically the utility mains, fails.
A UPS differs from an auxiliary or emergency power
system or standby generator in that it will provide
instantaneous or near-instantaneous protection from
input power interruptions by means of one or more
attached batteries and associated electronic circuitry
for low power users
Electrical fault protection System
Power system protection is a branch of electrical
power engineering that deals with the protection of
electrical power systems from faults through the
isolation of faulted parts from the rest of the electrical
network.
The objective of a protection scheme is to keep the
power system stable by isolating only the components
that are under fault, whilst leaving as much of the
network as possible still in operation.
COMPONENTS
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Circuit breakers
Protective relays to sense the fault and
initiate a trip, or disconnection, order;
Current and voltage transformers
Auto reclose commands;
Batteries
Circuit breaker
A circuit breaker is an automaticallyoperated electrical switch designed to protect
an electrical circuit from damage caused by
overload or short circuit. Its basic function is
to detect a fault condition and, by
interrupting continuity, to immediately
discontinue electrical flow.
Fuse
A fuse, which operates once and
then has to be replaced, a circuit
breaker can be reset (either
manually or automatically) to
resume normal operation.
Power Control panel
In this system all power
equipments are places in panel. It
is designed such that, any kind of
problem of power is solved by
itself automatically and save the
equipment.
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Md. Emdadul Haque
Md. Sahed Hasan
Md. Samsul Arefin
Khokan Das
Amit Halder
Md. Belayet Hossain
Ayub Bin Alam
08310102 (0-5)
08510018(Slide 9-13)
08410067(Slide 23-25)
07510036 (slide 6-8)
09310129 (slide18 -22)
10310294 (slide 14-17)
(slide 26-30)