19 minute read
The power of PoE
CCTV
PoE – Powering video expansion
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PoE technology enables integrators to easily connect, configure and integrate different types of systems, without having to learn a whole new ‘language’ Uri Guterman, Head of Product & Marketing for Hanwha Techwin Europe provides an overview on the benefits of PoE, as well as offering an explanation of the terminology associated with the cost and time saving technology
Power over Ethernet (PoE) technology is now widely used across diverse security and surveillance applications. However, the latest version of the standard, first established in 2003, has evolved the technology’s capabilities to the point where security professionals are now able to find entirely new uses for PoEenabled cameras and devices.
The PoE standard was first ratified by the IEEE in 2003, initially as 802.3af, and allowed a camera or other PoE device to receive up to 12.95 watts of power, with the second standard, 802.3at, doubling that to 25.5 watts.
PoE technology enables integrators to easily connect, configure and integrate different types of systems, without having to learn a whole new ‘language’ and without needing to run separate cabling to individual cameras and other devices. This offers significant cost-savings because you now don’t need to provide power at every camera location and you don’t need to run 18/2 copper cabling. Instead, you will have a single cable for the data and power, with the added bonus of making functions like UPS battery backup easier, because now it is all centralised.
For system integrators, requiring fewer cable runs to deliver power and network connection to a camera makes it much easier to design and install new video surveillance solutions, as well as expand existing systems.
There are also PoE extenders available which negate the need for a local 240-volt power source by lengthening the distance over which power can be delivered over PoE and there are ways to daisy chain these extenders to provide power over greater distances.
PoE technology can also do much more, if used properly. The technology can extend beyond cameras to include lighting, digital signage, clocks, access control, entry and access badging systems, encoders, decoders and Public View Monitors (PVMs) and many other devices.
Standards have evolved and now support higher network speeds of up to 10 gig and allow for more watts to be received. As the new standards have been released, manufacturers such as Hanwha Techwin, have kept pace by upgrading and enhancing its cameras to best take advantage of each technology leap. PoE+, for example, provides up to 25.5 watts over Cat5, whereas PoE can only offer up to 15.4 watts. The increase in wattage available via PoE+ means that sufficient power can be provided for heaters to operate within the housings of cameras designed to operate in low temperature environments. PoE+ can also be used to power a
camera’s built-in Adaptive IR LED illuminators in order to focus IR light on far away objects and in doing so, enable the cameras to capture high quality images in night-time conditions.
The terminology
When it comes to PoE, there are two key terms which you are likely to come across: • Power Sourcing Equipment (PSE) e.g. PoE switches. These can draw up to 15.4 watts, but it should be noted they can’t deliver this amount of wattage because of loss along the cable run. As such, a camera will only receive 12.95 watts. There are, by the way, NVRs on the market which have built-in PoE switches and as such, provide system integrators with a time saving method of supplying power to connected cameras. • Powered Device (PD) refers to cameras and other devices such as audio speakers, supplementary lighting units, I/O controllers or PIR sensors which draw power.
It should be noted that a PoE extender camera, which offers a highly cost effective way to install a new two camera video surveillance solution or add a camera or another PoE enabled device to an existing system, might be referred to as either a PD or a PSE device, as they both consume and provide power.
When designing a system, professionals need to make sure they look at each device’s datasheet. If it says “12.95 watts,” that number shouldn’t be used by itself to size how big the power budget is on the infrastructure. If you have a 32-port switch, or even a 48-port switch, then 12.95 x 48 equals 621 watts. But 15.4 x 48 is 739. That’s a difference of 118 watts, which could cause devices to not receive enough power, changing your PSE selection. It’s important to always know what the actual power draw is on the switch side.
It is also worth mentioning that the ‘E’ in PoE does not mean ‘everything’. There is no ‘one size fits all’ and just because a switch says it can do PoE+, it probably can’t do that on all the ports. You will need to take into account how much power each camera or each device consumes and then do the maths to make sure that a switch can fully support your network requirements. If in doubt, never hesitate to ask the manufacturer to confirm that their PoE cameras, NVRs and/or PoE switches are able to meet your requirements. If in doubt, never hesitate to ask the manufacturer to confirm that their PoE cameras, NVRs and/or PoE switches are able to meet your requirements
Do you have some questions about PoE equipped cameras and NVRs? Email Uri Guterman at u.guterman@hanwha.com
YOUR HOME IN AN
How the Cloud is transforming security
Cloud security applications are transformative for businesses, enabling smart buildings with remote access control and sophisticated 24/7 monitoring. The granting and revoking of access can now be done instantly from anywhere; each individual does not need to be escorted personally. Cloud also allows for complex video analytics, which can detect, track and classify the behaviors of people and vehicles on the premises. Push notifications can alert you to suspicious behaviors so that security management can intervene before situations become dangerous. Additionally, cloud-based systems can provide greater insight into day-to-day activity, such as when and where employees or vendors have accessed certain spaces, or even if a door was left open.
For security dealers, the power of the cloud is all about account insights. Data from internet-connected security systems can now be accessed remotely, allowing for quick identification of customer issues on individual accounts. Some issues can even be handled remotely, which can help security dealers avoid service calls.
Additionally, cloud is enabling business growth and customer loyalty by allowing dealers to identify customers that aren’t subscribed to but might benefit from certain services, or who don’t have certain peripherals installed but are capable of adding them. For more visit: www.security.honeywell.com
IDIS Video Analytics ebook sets out the advantages and business case for Deep Learning tech
IDIS’s latest tech-explainer eBook – The Benefits of Deep Learning Driven Intelligent Video Analytics – explores how a new generation of AI video solutions is delivering better security, safety, operational efficiency and business intelligence. The eBook, which can be downloaded now from the IDIS website, reflects the company’s commitment to supporting its systems integrator partners as they focus on delivering advanced video solutions into growth sectors.
The new eBook explains some of the differences between conventional ‘blob’ analytics – found in most modern network cameras and relatively prone to false-alarm triggers caused by environmental factors – and more powerful deep learning technologies.
These newest generation AI solutions leverage neural networks made up of multiple layers of algorithms and advanced processing, and can be
The eBook also outlines how AI video can support efficient return-to-work strategies and ensure COVID-secure facilities and workplaces using highly accurate analytics for face mask detection, social distancing adherence, people counting, and occupancy monitoring. Guidance is also provided for systems integrators, demonstrating how the same functionality will deliver value beyond the pandemic, with benefits such as facilities and workspace optimisation, and actionable insights particularly for the retail and hospitality sectors. To access this informative eBook with no need to provide personal or company details, simply use the QR Code on this article.
Open Door is an online service from PSI that provides in-depth information from a selection of market leading companies. Here are some of the highlights from the pages of Open Door.....
Not all detectors are the same...
An intruder alarm system is only as good as the sum of all of its parts, which is why the choice you make when specifying PIRs and sensors for an installation makes all the difference The performance of detectors, the reliability of wireless functionality and the development of smartphone apps have helped improve the performance of intruder systems and also made installing the technology even easier. For example, commissioning the original panel, PIRs, sounders etc is much easier with a wireless system but when the panel needs a few extra detectors or peripherals added at a later date is when wireless wins hands down in terms of speed of install and simplicity. In terms of detectors it is vital for the efficiency of the whole system that the best products are used.
Recently reviewed in PSI magazine with an impressive 9/10 rating, the Capture range from Texecom comes with EN Grade 2 wired or wireless connectivity, wall or ceiling mounting, and a choice of detection technologies including dual element, quad element or dual technology sensing for a variety of security environments. Use the QR code for more information
Unmanned train depots secured by Video Analytics
Southeastern Rail Network operates train services between London, Kent and parts of East Sussex. It is one of the busiest networks in the country, transporting 640,000 passengers each weekday on its 392 trains, which are temporarily housed in 12 depots situated around South-East England. Some of these depots are unmanned, and therefore require intelligent security solutions. Bosch Security System’s Integration Partner, Taylor Technology Systems, were tasked with upgrading the entire video surveillance system across the 12 depots. The camera portfolio installed across the 12 depots included FLEXIDOME IP starlight 7000 VR, DINION IP starlight 7000 HD and AUTODOME IP starlight 7000 HD cameras. These cameras are all equipped with Bosch’s Intelligent Video Analytics solutions ensuring that the most relevant video data can be precisely applied to the requirements of the train depots. Visit: www.boschsecurity.com/gb/en/
Integriti update includes biometrics and real time location tracking
Access control and security system designer and manufacturer Inner Range has released the Version 21 update for its Enterprise-level system Integriti, which includes integrations with Suprema biometrics and Quuppa real time location tracking. The new integration with Suprema allows users to add thumb and face scans as access credentials, which can be used in addition to smartcards and PIN for high security with trouble-free access.
The integration with Quuppa means tagged information from the Quuppa system can be associated with Integriti entities, allowing direct control of the asset from either system. The asset could be an object, or a user associated with it.
The location of tagged assets can be made visible on Integriti’s schematic of the site, alongside all other access and security devices. Operators can access all cameras with the asset in their field of view, if fields of view are configured. Alert protocols can be set up with bespoke criteria and operators can track and view the asset instantly if an alert is triggered. Visit: www.innerrange.co.uk
WINNER
Technical Innovation of the Year
CCTV/AUDIO
Combining audio and HD video
Can you deliver broadcast-quality audio with HD-over-coax surveillance? Here we take a look at Dahua’s HDCVI DAC technology
Within a complete surveillance system, audio provides various monitoring scenarios with important evidence such as capturing conversations, which can be used to resolve disputes. Although the transmission of video and audio within standard analogue surveillance installations achieves a result of video with sound, the following user pain points still exist: 1. When not using a technology with the ability to transmit audio and video over the same coaxial cable, audio must be transmitted over an additional cable. This greatly increases system labour and maintenance costs. At the same time, the non-synchronous nature of the video and audio signals will cause discrepancies in the captured surveillance monitoring information. 2. Even if cameras are powered by a centralised power supply, each point still requires extra design and cabling work. At the same time, if poor quality materials are used, or the distance of power transmission is too great, it could cause an increase in voltage drops, resulting in the centralised power supply not being able satisfy device requirements for normal operation.
HDCVI technology realises audio transmission over coaxial cable with DAC (Digital Audio-over-Coax) technology transmitting a digital audio signal directly over coaxial cable. As a result, not only is installation much more convenient, but there is also anincrease in audio transmission quality, achieving lossless “broadcast-level” audio quality, thus providing users with a multidimensional video surveillance solution.
Key technology
HDCVI DAC technology converts a captured audio signal into a digital signal and combines it with the analogue video signal. Then, the signal is transmitted to the XVR via coaxial cable, where it is received and processed.
High-Definition Sampling and Digital Signal Transmission - Previous audio transmission over coaxial cable was performed with the use of an analogue signal. Within these configurations, it is easy for the signal to be affected by interference during the transmission process, making it difficult for the receiving end to precisely restore the sent audio signal. HDCVI DAC technology uses digital signal transmission technology to resolve this problem. It converts the analogue audio signal collected from a sound pick-up or a built-mic into a digital audio signal via an AD module (Analogue-Digital conversion module), whereby it then engages in processing and transmission. This results in the data on both the sending end and the receiving end being exactly the same, guaranteeing lossless transmission. At the same time, the AD sampling module uses 16 bit high precision sampling to divide the signal amplitude to 216. In comparison with previous 8 bit audio, this provides more precise sampling.
Noise Reduction via Software Filtering Audio noise is often introduced during audio collection. No matter whether the user employs an external pickup or built-in mic, noise is unavoidable. With HDCVI DAC technology, after conversion from an analogue to digital audio signal, the signal is processed by an ISP, which uses an algorithm to achieve filtering, resulting in a maximum reduction of pickup input related noise. Note: Due to ISP performance limit, this technology is only adopted on some models.
Baseband Multilevel Modulation/ Demodulation - HDCVI DAC technology uses baseband multilevel modulation. Baseband modulation allows for strong signal interference resistance and low signal degradation, allowing for longer range transmission. Multilevel modulation transforms the process from simple high-low levels into a number of levels, increasing the quantity of data transmission and reducing the audio data bit error rate. When the composite video signal is transmitted to the HDCVI technology realises audio transmission over coaxial cable with DAC (Digital Audio-overCoax) technology transmitting a digital audio signal directly over coaxial cable
CCTV/AUDIO
For more information about HDCVI DAC visit:
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XVR, HDCVI DAC technology uses multilevel demodulation to completely extract and isolate the exact digital signal sent from the sending end, achieving lossless audio restoration.
Audio Signal Judgment and Extraction HDCVI DAC technology adds audio flags to audio signals, preventing interference with the video signal. When the composite video signal passes through a coaxial cable and reaches the XVR device, the XVR will check for audio flags within the signal. If audio flags are not found, the device will not accept the audio signal, which reduces noise in the absence of audio input and further increases audio quality.
Application scenarios
HDCVI DAC technology provides quality audio for various monitoring scenarios, offering important supplementary evidence for traditional video surveillance. In shops and other business applications, HDCVI video and audio provides useful evidence for disputes on behaviours or trading. Also, the synchronisation of video and audio ensures high accuracy and reliability of the surveillance. Provided a customer and a cashier disagrees on some issue at the cashier desk. Besides restoring the scene of incident by video monitoring system, HDCVI DAC technology can be applied to provide audio evidence. Thus, the conflict can be mediated with a more reasonable and effective solution. Besides the function of recording evidence, high quality audio and video surveillance system can also identify abnormal behaviours when applies in schools, offices, or home applications. As for students’ fights and illegal intrusions, audio and video surveillance can intuitively, accurately and timely restore information. Thereby it helps us identify suspect faster and better protect life and property.
Conclusion
HDCVI DAC technology adopts the digital signal audio-over-coax transmission technology, which guarantees the lossless transmission of the audio signal. At the same time, HDCVI DAC technology realises effective noise reduction in the whole audio transmission process, enhancing the audio quality. It satisfies the user's demand for auxiliary audio information in various monitoring applications with little increase on device or installation costs.
MULTI-AI PLUG-IN
Simplify your searches and save time
Panasonic i-PRO launches an AI search and detection solution which can be seamlessly integrated into existing CCTV infrastructure thanks to an efficient and easy-to-use AI plug-in system - forming a full AI ecosystem.
West We North
East People Search (AI People Detection) Search by garment type and garment colour Search by direction of people Detection of mask, hat, facial hair and different colours and styles of hair
Contact us to find out more press.eu@i-pro.com
UNIVIEW
Deter and protect with Tri-Guard
A closer look at the Tri-Guard Network Camera from Uniview
The UNV Tri-Guard Camera is an all-in-one security camera product, that can support the ColorHunter range of full-colour technology, accurate smart AI features, active deterrence and real-time alarm notifications.
Why Tri-Guard Camera?
Conventional security surveillance systems suffer from many problems that ultimately affects user experience: excessive false alarms, a crime needing to have been committed before evidence or footage is available, and lack of detailed information during the night. Furthermore, to enhance the basic system, users can spend excessive amounts on accessories such as microphones, speakers, traditional alarm detectors and sirens.
The New UNV Tri-Guard cameras overcome these problems. By using the ColorHunter technology, cameras can provide 24/7 true colour rather than grainy monochrome video to identify perpetrators efficiently in any follow up investigations.
Compared to traditional cameras, Tri-Guard cameras are equipped with a strobe light and a siren, which can be used to deter the intruders before they actually break into the property or commit any further damage. In addition, with the powerful AI chipset and algorithm, the Smart Intrusion Prevention and Face Capture functions can only be triggered by human and vehicle targets, therefore reducing false alarms.
Dual lights for different fill light requirements
The Tri-Guard cameras have both IR and white LED supplementary lights. Under this condition, it can be configured as 24/7 ColorHunter colourful monitoring mode or conventional black/white monitoring mode.
Active deterrence and real-time alarm
With the White LED flashing light and prerecorded audio messages played by the built-in siren, Tri-Guard cameras can warn and deter intruders. The real-time alarm information will be sent to the mobile APP and NVR for prompt action at the same time.
Three different alarm modes
White light mode: The White LED light will be turned on during the night time by default, allowing colourful and detailed information to be recorded. And when the alarm is triggered, the pre-recorded audio message will be released. IR mode: The IR LED is set as supplementary lights by default, the footage is in black/white mode. When the alarm is triggered, the white LED will flash, and an alarm siren will be released at same time. Dual-light mode: The IR LED is set as supplementary light by default. The footage is in black/white mode. When the alarm is triggered, white LED will be turned on, and video is switched to colourful mode. Meanwhile, the alarm audio will be released.
Reduce false alarms with AI
The AI Smart Intrusion Prevention (SIP) and Face Capture, reduce false alarms by focusing only on potential targets. This works by only triggering alarms when humans or vehicles enter an area identified as restricted.
Accuracy is increased with the clearer image quality and the fact ColorHunter provides such excellent image quality in dark environments. This helps operators to quickly identify any security issues, alert night-time guards or take other actions to secure the area.
Application scenarios
Overall, coupled with AI Smart Intrusion Prevention, Face Capture and ColorHunter technology, UNV Tri-Guard cameras are effective in a wide range of environments such as commercial and industrial, residential, retail, urban and car parking, to name a few. Tri-Guard cameras are equipped with a strobe light and a siren, which can be used to deter the intruders before they actually break into the property or commit any further damage
