From past simple video footage monitoring to today's intelligent IP video surveillance systems that have the capability of abnormal events identification and analyst, the CCTV technology with never-ending improvements has promotes the innovation of related applications. With the popularization of IP networks and the falling prices on the relevant IP cameras, there is a tendency for more industries and sectors to adopt IP surveillance solutions. Among them, the PoE video surveillance system provides an optimal option for users requiring high security.
With the introduction of digital video recorders (DVRs), a video server was utilized to connect existing cameras to the IP network, and the video is then stored on an IP network server. Later, the adoption of network cameras (IP cameras) realized the migration to complete IP-based video systems. Many IP cameras will be connected directly to the IP network as needed. The picture below presents a network camera-based unified IP network.
According to statistics, with about 15 million surveillance cameras installed in the United States today, almost 10 percent are now IP-based. Indeed, there is a tendency for more organizations that used analog-based CCTV systems in the past to migrate to complete network-based digital systems now. Businesses that couldn't afford dedicated video surveillance rooms and expensive equipment before can now deploy IP cameras for a fraction of the cost of traditional systems, enjoying the improved security and automated efficiency that this type of video surveillance system brings. PoE video system, combining IP cameras with advanced PoE technology, is becoming a better choice on account of remarkable advantages.
PoE video surveillance system indeed prevails in almost all the aspects than the previous ones like analog video system. This part will further explore the inherent benefits of this advanced video surveillance system that adopting IP cameras cooperated with PoE switches.
Running around one-half of a megapixel (MP), recorded images produced by the preceding analog surveillance cameras are low-resolution, which may not sufficient for official investigations. The high-definition digital images produced by IP cameras are sharper and clearer with typical shooting footage ranging from 1MP to 5MP. Furthermore, digital videos can be stored on a variety of media like PC hard drives, and Network Attached Storage (NAS) systems, which can be searched quickly based on dates or locations even if large volumes of data have been stored.
One of the major tasks of IP cameras is watching the entranceways to detect entering or leaving, so as to reveal the "grab and run" theft and intrude events. This smart system can be configured to flag these events and send notifications directly to the user's smartphone, along with the recorded footage. Some can even get a one-touch connection to local law enforcement.
Distance won't be a problem in a PoE design surveillance system, because the video feeds from IP cameras can be monitored from remote sites, or even to locations outside the business with the aid of the Internet. The feeds can also be viewed upon multiple displays or devices simultaneously. Through integration with the existing Ethernet/IP network, the operation of the surveillance network can be incorporated into an organization's IT environment. Thus multiple applications will be converged onto a single, unified network.
Network security is always regarded as an important part of modern data solutions. In a PoE IP video system, a series of measures are taken to prevent access from unwanted users or those with malicious intentions. Video surveillance network cameras may provide different levels of password-protected access: some authorized users may only have access to view images from specific cameras; others may have operator-level access, and a few have access to administer all settings in a network camera. Besides the multi-level password protection, PoE surveillance systems adopting IP networks may offer AES encryption and IP address filtering to give or deny access rights to defined IP addresses, and use mechanisms like IEEE 802.1X to strictly control network access.
With the support of PoE-enabled switches, both power and data can be provided to cameras over the same Ethernet cable, without separate power cables. Only one single unshielded twisted pair (UTP) Ethernet cable run to it from its local switch, which provides a cost-effective and time-saving solution. For new installations, the current cabling can be incorporated, and any subsequent upgrades or expansion of this surveillance network can also be simplified on account of the utilization of the existing network infrastructure.
Unlike analog systems that require coaxial, fiber, or UTP cabling, the IP network cameras can be deployed anywhere reachable by Ethernet cabling or a wireless access point, expanding deployment options to include longer reaches or even outdoor coverage. Add, move, or remove cameras without taking other cameras or equipment offline to ensure there are no gaps in the recording.
Adopting a PoE surveillance system in IP networks is beneficial to protect the integrity and availability of recorded surveillance videos and images—prevent data loss, back up mission-critical data, and recover quickly from outages. All the devices covering IP cameras, PoE switches, access points, and storage devices can be monitored in case of detected issues. For instance, if an IP camera goes offline, the system can immediately alert administrators who will assign another camera to cover that area. If a storage unit is unavailable, the backup storage can automatically take over and no recorded data is lost.
Video surveillance is crucial for all walks of life to protect people's safety and property security, and to minimize the risks associated with criminal activity. The PoE video surveillance solution is adopted in many crucial industry sectors like plants, shopping malls, large-scale enterprises, and any business requiring security surveillance. Not merely focusing on these key fields, the PoE video surveillance has also penetrated in the daily life scenes to some degree, like residential complexes, educational institutions, public libraries, hotels, and so on. The powerful surveillance is also significant to both environmental monitoring and urban management.
The manufacturing industry won't live without the management of factories. The high-resolution PoE video surveillance is often adopted in some warehouses, not only to prevent the theft of equipment and valuable goods but also to pre-empt some accidents in potentially dangerous environments to ensure the safety of staff.
For some high-tech businesses, the installation of PoE IP cameras will create a converged IT and surveillance network in offices. Getting network switches involved or adding more, connect the IP cameras directly to the existing or the new PoE switches via Ethernet cables. Set up video storage and management servers at the same time. Generally speaking, use VLANs to segregate the ports for camera connections and introduce path resiliency to avoid communication disruption. Here is a sample diagram for the application scenario in the office building.
PoE surveillance solutions are also ubiquitous in our daily lives. Deployed in big shopping malls for the identification of suspicious shoplifters or in parking areas with multiple locations for the detection of suspicious events. Besides, many schools with deployed IP networks are adopting PoE IP cameras to monitor the public areas inside the campus to ensure the safety of the children.
As is known, IP cameras have already been an indispensable part of hospitals. The IP cameras are normally installed in entrances, exits, elevator doors, hallways, etc., with no blind spots for the safety of the patients as well as the medical personnel. In the security control center, the surveillance monitors receive the video feed from each camera will enable the security guards to maintain real-time surveillance of the entire hospital. The following model will provide a visual explanation.
On the one hand, IP surveillance technology has been adopted in the monitoring of the natural environment. For example, with the installation of PoE IP cameras, the local governments and authorities can monitor and evaluate river levels regularly, in order to provide early warnings of floods and other disasters.
On the other hand, to create a safer and better-organized city with the aid of intelligent PoE surveillance solutions. Take the transportation monitoring system as an example, IP cameras are connected to the network infrastructure that already exists along railways. The networks along railways and highways cover long distances and are well-suited to a ring topology. IP surveillance cameras are placed throughout stations, which provide a safety and security service to passengers. Alarms can be raised when passengers are seen entering restricted areas. These cameras also help prevent vandalism and theft crimes, as well as an early warning of fires. Particularly, for some unmanned stations, these PoE IP cameras that with remote monitoring function will also make real-time surveillance possible.
There are some technical requirements to consider before deploying the PoE IP surveillance system or transitioning from an existing analog system to a high-functioning IP surveillance system. Network bandwidth and latency, network features and capacity, wired or wireless, hard disk storage capacity and application software are all should be taken into considerations. How to design, deploy, secure, and optimize a network for PoE IP surveillance is also a question worth to think. Make sure that you have an overall and elaborate plan for your future PoE video surveillance system.