internet protocol based closed circuit video monitoring system
DESCRIPTION
A brief description of Internet Protocol Based Closed Circuit Video Monitoring System and the components required.TRANSCRIPT
IP Based Closed Circuit Video Monitoring System
CONTENTS
INTRODUCTION TO CCVM NETWORK COMPONENTS USED IN COMMUNICATION SYSTEMS MAJOR UNITS OF OLD SYSTEM CCVM SPECIAL FEATURES OF CCVM IP CCVM SYSTEMS IP ADDRESSING MECHANISM ADVANTAGES AND DISADVANTAGES OF IPCCVM CCVM VS IPCCVM SYSTEMS CONCLUSION
What is CCVM?
Closed circuit video monitoring system (CCVM) is the use of video cameras to transmit a signal to a specific, limited set of monitors.
Differs from broadcast television
CCVM is used for surveillance.
Used in hazardous areas that may need monitoring.
Different Network Components Used In Communication Systems.1) Active Components:
Network Switch Media Converter
Network Interface Card
Basic Block Diagram of Network Containing Router and Hub
Router Hub
Cladding Glass
Core Glass
Single Mode
Multi Mode
Cladding Glass
Core Glass
2) Passive Components:
Optical Fibre Cable
Major Units of Old System CCVM
CCD SensorCamerasLensesSwitching unitMonitoring unit
CCD Sensor:-
The CCD sensors are the device that converts the image captured by a lens into electrical signals which are stored in a camera.
Camera UnitA camera collects reflected images from objects in the
environment and then converts them into electronic signals.
Devices involved in the working process:
1) Solid-state imager
2) Monitor
3) Peripherals
4) Signal transmission technology Camera performance:
1) Sensitivity
2) Resolution
Lenses
It is fixed in front of the camera and is used to focus the required object on the photosensitive plate.
Different Lens Sizes Can Change The Viewing Angle Of A Camera:
3.6mm Lens at 5 Meters(16ft)
12mm Lens at 5 Meters(16 ft)
3.6mm Lens at 15 Meters(65ft)
12mm Lens at 15 Meters(65 ft)
IrisThe ability to control a camera’s iris opening plays an important role in image quality.
Fixed Iris
Manual Iris
Auto iris (DC and video)
P-iris
Cable Types: There are two main types of cables used for transmitting video signals.
1. Unbalanced (co-axial):
2. Balanced (twisted pair):
Switching Unit Camera switchers are devices that allow CCVM system operators to switch between cameras--either manually or automatically.
Types of sequential switchers:
1) Bridging Switchers 2)Homing Switchers
3) Looping Switchers 4)Alarming Switchers
5) Combination Switchers
6) Microprocessor-based Matrix Switchers
1) Frames per second :
2) Pan Tilt Zoom (PTZ):
3) Cameras with special accessories
Special Features Of CCVM
Existing CCVM System The main parts: 1) Camera Section 2) Cabling 3) Monitor
DISPLAY MONITER
Recording Video Images
1) Tape Video Recorder2) Digital Video Recorder
Digital CCTV:
IP CCVM SYSTEMS
IP cameras are Closed-circuit Video Monitoring (CCVM) cameras that use Internet Protocol to transmit image data and control signals over a Fast Ethernet link.
Network cameras
• Viewing cameras through internet connection.
• Communication of data.
Architecture of IP CCVM SYSTEM:
Types of IP Cameras:
Types of IP cameras based on internet
connection:
1) Wired IP cameras
2) Wireless IP cameras:
Types of IP Surveillance Cameras:
3) Fixed
4) Fixed Dome
5) PTZ
6) PTZ Dome.
Process Involved In Working Of IPCCVM
IP Addressing Mechanism An Internet Protocol address (IP address) is a
numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication.
The two parts of an IP address 192.168.10.10 192.168.10.20.
IP Addressing Fundamentals:
Subnet Masks:• IP addresses are actually 32-bit binary numbers
• Each 32-bit IP address consists of two sub addresses
1) Identifying the network
2) Identifying the host
Example:
IP address 11000000101010000000000100010100
Subnet mask 11111111111111111111111100000000
IP Versions:1) IP Version 42) IP Version 6
Decomposition of an IPv4 address from dot-decimal notation to its binary value:
Decomposition of an IPv6 address from hexadecimal representation to its binary value:
Potential Advantages:-
Two-way audio via a single
Higher image resolution:.
Flexibility
Distributed intelligence
Transmission of commands for PTZ (pan, tilt, zoom)
Encryption & authentication
Remote accessibility
Navigation purpose in defence forces.
POE - Power Over Ethernet
On-camera automated alerting via email or file transfer in response to video motion detection or dry-contact alarms.
Password lockout of unauthorized
Facial Recognition Through IPCCVM
Potential Disadvantages:
Higher initial cost per camera
High network bandwidth requirements
Technical barrier
System becomes open to hacking via internet.
IP CCVM at Blast Furnace
Blast Furnance Monitor
CCVM vs IPCCVM
1) Remote Viewing
2) Remote Recording
3) Wireless Capability
4) Video Analytics
CONCLUSION IP-based technology is the best in terms of security
by far. It provides long-term storage.
To set-up an IP-based video system is easy -- once in position it starts functioning with extreme stability and reliability. Because this is the technology of the future, it is also upgradeable.
CCVM system would not be labeled obsolete because new developments are based on improving this market.
IP based CCVM can be said to be a very efficient and reliable method of recording, storing and sharing data with much less fuss as compared to its predecessors
Hence a better prospect for the future of data communication.
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