Ravisolutions

Ravi Solutions is one of leading security systems and service providers, security surveillance, fire detection and CCTV products. Established in 2011, Ravi Solutions has been at the forefront of providing the most comprehensive solutions in security and surveillance. It offers a wide range of security systems products including microprocessor based panels for up to 126 zones (for commercials and residential needs), ID reporting facilities and addressable panels.

   
Ravi Solutions
 

Ravisolutions is a well established offshore software company head-office in Bhilai Chhattisgarh. We provide quality and professional web design, web development,
offshore website development and offshore software services to clients from all over the world. Wherever you are located.

We Install :
 
At RaviSolutions we provide all types of surveillance systems with following equipments:
 
Dome cameras are becoming increasingly popular due to their ability to blend in with their surroundings. These cameras are used in residential applications as well as public places such as convenience stores, offices, and lobbies. Though they can be mounted to a wall, they are usually mounted on the ceiling.
   
Bullet cameras are encased in cylindrical usually weather resistant housings. Their size, cost and integrated design make them a great choice for home and outdoor installations.
   
Box cameras can be used with or without a housing. In most instances, they are used with a housing and bracket unit for outdoor areas such as parking lots and entry gates. Lenses are purchased separately offering greater flexibility.
   
PTZ cameras are more expensive but offer the operator more control with remote pan/tilt/zoom. These cameras are used primarily when an operator is actively monitoring an area and needs to manipulate the camera. They are popular in department stores, casi-nos and government buildings.
   
Covert or Spy cameras are designed for discreet installations. They are commonly re-ferred to as a nanny cam. Used frequently by private investigators, they effectively cap-ture video without others being aware.
 
Camera Specifications :
 
Camera Resolutions
One of the most common differences between cameras is the resolution offered. Camera resolution is measured by the number of horizontal lines the camera chip produces. It is re-ferred to as TV lines or TVL. The more lines of resolution, the higher the image quality. Stan-dard quality is from 380TVL to 420TVL. High quality is from 420TVL to 480TVL. Very high quality is anything above 480TVL.
Cameras are available with a wide range of features such as infrared technology, weather-proof housing, vandal proof housing, and various mounting options.

Lux is the SI unit of luminous emittance used in photometry as a measure of the apparent intensity of light hitting or passing through a surface. IR cameras have a 0 lux rating as they illuminate in total darkness. Some cameras are known as Day/Night and have very low lux ratings indicating it needs only a small amount of light to capture images in darkness. The chart below is an example of how much light is produced from certain sources measured in lux. If a camera has a lux rating of 0.1 and gets light equivalent to that of a full moon, it will be able to produce an image.
 
InfraRed Technology
Infrared technology (IR) refers to the cameras ability to capture images in total darkness. Cameras featuring IR product color images during daylight and switch to black and white at night. When choosing this feature, you will want an accurate measure of the distance you need illuminated at night. Some cameras are equipped with more IR lights than others and therefore are capable of producing longer range images at night.
 
Daytime Day/Night Infrared
 
DVR (Digital Video Recorders)
A digital video recorder (DVR) is the central component in any CCTV system. It is necessary to record the video from any camera. There are two main types, standalone DVRs and PC based DVRs. Standalone DVRs have been the most widely used but PC based DVRs are becoming increasingly more popular with their upgrade flexibility and decreasing costs.
Standalone DVRs : Standalone DVRs are machines are based on Linux, Unix or other proprietary operating sys-tem. Designed for a single application, they are simple to use and offer many features. They are commonly available in 4 channel, 8 channel and 16 channel and typically include a central management software (CMS) for remote viewing, PTZ control, live and recording playback op-tions and motion detection. All Vonnic brand DVRs include remote software though some other entry level DVRs may not.
 
Benefits :
  1. 1. High Resolution Recordings (720x480)
  2. 2. Feature rich, user friendly interface
  3. 3. Very stable and low maintenance
  4. 4. Easy network integration
  5. 5. Low cost
 
PC Based DVRs : A PC based DVR is a windows based computer that includes a 4,8,12,16 or 32 channel DVR card. Most DVR cards feature CMS software that offers significantly more options and customi-zations than the Standalone DVRs. Initial setup of a PC based DVR is more expensive, but you do have increased flexibility when adding cameras and storage.
Benefits :
  1. 1. High Resolution Recordings (720x480)
  2. 2. Upgrade flexibility
  3. 3. Feature rich, user friendly interface
  4. 4. Storage capacity
  5. 5. Easy network integration

Limitations :
  • 1. Windows based OS increases vulnerability to virus attacks and software crashes.
  • 2. Users must have some basic computer knowledge
 
Video Compression : MPEG4 and H.264 are the most popular video compression choices. The key to video compres-sion is the resolution and the size of the video. High resolution video files are monster size files and video compression for storage and streaming is critical to any video application. H.264 is the preferred compression method because it provides high resolution video quality from the smallest amount of video data required. Smaller files require less bandwidth and storage over previous generations of video codec's. H.264 delivers the same quality as MPEG-2 at a third to half the data rate and up to four times the frame size of MPEG-4 Part 2 at the same data rate.
 

Storage Capacity : Another important feature of a DVR is its storage capacity. When configuring how much stor-age you need, you must consider the following :

  1. » How many days of video do you want to store?
  2. » Number of cameras recording?
  3. » Frames per second each camera is recording?
  4. » How many hours per day to record?
  5. » How many days of the week to record?

  6. For example, a CCTV system with 6 cameras each recording at 30 fps, 24 hours a day, 7 days a week needs 1.4TB of storage space to maintain the data for 30 days.

 
Network Access and Remote Viewing : Network access is crucial to remotely access or monitor a video feed across a LAN, WAN, or via the internet. Newer DVRs feature the ability to remote view over a 3G network making it convenient for mobile phone users to access their DVR from virtually anywhere.
 
Accessories :
When installing any CCTV surveillance system, in addition to the cameras and DVR equipment, there are many other accessories that may be required for completion. I have listed below some of the more common accessories used by installers.
 
Cables
Video signals are transmitted from the camera to the DVR via coax or RG59 cable. Since power has to be ran to the camera as well, most installers use Siamese cable which combines the RG59 and power cable in one. Siamese cable comes in premade lengths and spools of 500 or 1000 feet. Premade cables are convenient as they already have the BNC and Power connectors attached. For longer runs, installers prefer to use the spooled ca-ble to customize their lengths.
 
Connectors & Adapters
Any CCTV installation may require various connectors and adapters. Connectors are components used to conduct and transfer signals from one cable or device to another. Adapters may be necessary to convert one type or gender of a connector to another.
 
Video Baluns
Video baluns are impedance transformers that allow the transmittance of a video signal (75 ohm) over cat 5 cable (100 ohm). They are used in pairs to transform the impedance signal at one end and to transform it back at the other end. Mismatching impedance signals will cause delays in the signal transmittance resulting in a ghosting effect on the picture. Installers use baluns in areas where cat 5 is already ran making it more convenient or for transmitting signals over distances exceeding 500ft.
 
Power Supplies
All cameras require some sort of power source. Power adapters or distribution boxes are used in most installations. If installing 4 cameras or less, most installers will choose to use a power adapter and splitter whereas installations involving more cameras, they will use a power dis-tribution box. When choosing a power adapter, be sure to get one that supports the voltage and amperage ratings for your cameras.
 
Our mission is to equip our customers with the tools, technologies, and best practices to deliver quality products on time and within budget.


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