Many users are interested in how to upgrade the existing video surveillance system in accordance with the latest standards. Currently, to get high-quality images, just install AHD cameras.
Let's look at one of the relatively “young” standards that has already managed to occupy its own niche in the implementation of effective video surveillance systems.
What is technology?
AHD cameras - what is it? The innovative format facilitates the transfer of image and sound over standard cables over a distance of more than 500 meters without delays and loss of image quality. In fact, the technology is nothing more than a successful symbiosis of analog and
digital signals.AHD cameras are becoming a real find primarily for those users who need to establish ultimate control over the object, tracking what is happening on the site thanks to the high-quality picture. Consumers who resort to the installation of such equipment, get rid of the need for radical changes in the system of cable routes.
Modern AHD cameras - what is it? First of all - a reliable solution that allows you to save money on the organization of effective video surveillance. Despite the budget cost, the technology works great when connected to conventional network devices without the need for complex settings.
Operational Features
AHD cameras can operate in several modes: as standard analog systems, in high resolution or as IP technology. This allows you to combine in a single system the visual control equipment already installed at the facility with instruments operating in an innovative format.
The technology supports work with CMS-systems and cloud services. Therefore, setting up an AHD camera is not difficult for those users who are familiar with the organization of video surveillance using long-proven tools.
During the operation of the cameras of the new standard, it is possible to connect alarm inputs and outputs, activate the information backup system.
Structure
The technology is based on the following elements:
- The processor for image processing, connected to the signal transmission unit, in high resolution.
- Special audio and video codecs that form the available signal for the digital processor.
- Megapixel arrays that convert luminous flux into electrical signals.
- Innovative lenses that significantly improve the clarity and overall picture quality.
AHD Camera Connection
The most relevant for those who seriously think about the application of technology remains the question of how to connect this miracle of engineering. Let's look at how to integrate AHD cameras into a video surveillance system.
To begin with, it is extremely important to form a general idea of the structure of the future scheme. Therefore, it is worth finally deciding what kind of observation is required at the current moment: external or internal.
When purchasing AHD cameras, it is necessary to take into account the area of the room or object as a whole. The features of individual areas require the use of a different number of cameras, their work settings in accordance with specific conditions.
If we talk about storage for information, then as such, you should select hard drives, the volume of which is enough to save video files of a pretty impressive size, since here we are talking about a picture in high resolution.
The type of system being designed deserves special attention. If it is necessary to use IP technology, it is recommended to resort to wireless connection of cameras. Implementing other schemes, you will have to stock up with a two-core KVK cable and special DC connectors.
How to connect an AHD camera? The device can be powered by either a network adapter or a built-in battery. You can also resort to connecting surveillance equipment with an Ethernet cable, which, if necessary, can be an effective source of energy.
Technology benefits
The outdoor AHD camera differs from the widely demanded HD, IP and SDI systems in the following advantages:
- Relatively low cost.
- High-quality signal transmission without the installation of auxiliary equipment.
- No staff training required to operate the surveillance system.
- Simple upgrade to existing analog circuitry.
- Slight signal delay.
- The highest quality picture when broadcasting in real time.
- AHD cameras are distinguished by the presence of a durable, sealed enclosure, which allows the equipment to function without problems in domestic climatic realities.
- The presence of infrared illumination allows surveillance cameras to function at night as effectively as during the day.
- You can control the system remotely from any point where there is a high-speed Internet connection.
disadvantages
First of all, the organization of a video surveillance system using AHD-cameras will be much more expensive compared to the same IP-recorders. Investments will become especially tangible during the implementation of large-scale projects.
Two cables are required to connect one AHD camera to power. At the very least, such a connection method is currently the only one possible for introducing the technology. At the same time, in order to organize an IP surveillance system, it is enough to use one cable, which will satisfy the energy demand for more than a dozen cameras.
But the main drawback is the lack of the ability to view data without a special device that is responsible for changing the video format. Since the signal transmission is not compressed, the camera cannot be connected to the monitor directly.
Finally
As you can see, AHD technology has all the advantages that are characteristic of the analog and digital format for transmitting visual data. In addition, the standard is practically devoid of flaws. Therefore, we can safely consider the innovative format as a good future prospect.
A justified decision to organize a surveillance system based on AHD cameras looks when it is necessary to obtain an easy-to-use, extremely effective budgetary tool. When modifying the old circuit, this option avoids unnecessary expenses for organizing a new cable structure and staff training.
All of the above features make replacing the old CCTV system with AHD cameras a completely justified solution.