Tag Archives: CCTV Camera

IPCCTV over WIFI

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The scenario.

Picture the scene (pardon the CCTV pun!)

Building A is 500 metres from building B

There are 4 cameras on building A, one on each corner (don’t you just love perfect worlds!) and they need to be viewed, recorded and controlled (did I mention they were PTZ?) all from building B

THE PROBLEM

The two buildings are separated by a river – a very nice river, big boats coming up and down, delivering stuff to dockside delivery points.

No chance of cabling then….. Until recently, the answer was to use free range wireless transmission solutions, such as RF, Microwave, Laser etc……… but, history shows that each has it’s positives and negatives but they all share one common negative….. expense.

ANOTHER WAY?

With the upsurge in IP, there is another way………..Wifi…………ok, professional wireless is what all the proper ‘wifi’ consultants will call it, but wifi nonetheless.

You see, Wifi does not have to be a one to one transmission solution…………. with typical bandwidth of 54Mbps, even if we halve it (because clever network guys will tell you that there is always a drop over distance etc), we can expect a 27Mbps bandwidth allowance……

So, take our building A and B scenario…. cable all the 4 cameras to a central point (it is a perfect world after all !) and either convert to IP from analogue using encoders (or, if we are to get this industry into the 21st century let’s push the boat out and go true IP cameras!) and connect to a regular 4 port network switch…

Take the output of that switch and insert into something like the Silvernet product range….. 1Km line of sight, pre-configured to create a point to point connection…..go to building B, position the receiving unit line of sight to building A and either decode back to analogue or bring one, neat, simple CAT5/6 cable out and introduce to the network for full control and view of the system ! simples !

THE THEORY AND THE PRACTICE

Ok, we don’t always have a perfect world, clearly, however, using the above solution, we have sent 4 cameras over the one link….saving a LOT of money:-

RF/Microwave/Laser = at least £2000+ for EACH camera

WIFI = under £1000 for a 1Km link with the ability to run a good few cameras – typically a PTZ IP camera would be around 5Mbs and a static at around 2Mbs

But, just like RF/Microwave/Laser, if the Wifi states ‘Line of Sight’ or LoS, then it REALLY means that…..so much as a leaf on a overhanging tree, or, in the case of our River separating the two buildings, boats that might momentarily ‘interrupt’ the signal, it is imperative to ensure that the TX and RX units are positioned so as to enjoy clear and uninterrupted transmission!

The cost savings are impressive and just might give this industry the excuse to use IP !!

HD security cameras – HiDef or Megapixel ?

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HD or not HD – that is the question

It’s 2010 and our industry is once again pondering the inevitable
question ‘when will IP catch on’!!??

For the past few years, experts have been predicting the demise of the
analogue camera and the true embrace of networked connected IP
cameras…….but with no-one really sticking their neck out and
stating when it will actually happen.

And this is, in part, because the industry is a wash with so many
fragmented technologies that installers and end users alike are
confused as to what is really available.

Take the latest greatest IP encoder and you are hooked on the quality
and ease of installation….then you ask what recording options are
available and you find yourself hooked into the same manufacturer to
ensure complete compatibility…….

What happened to using the Panasanyo camera with the Dedicated
Research DVR along with the Ademcobrain monitor?? Analogue, old
technology but at least compatible with each other!

Perhaps things are a changing……ONVIF is around the corner and
promises to ensure that any company that signs up has to ensure it
offers compatibility with other ONVIF contributors – we wait and
see……

Megapixel? Whats best? We are brought up to believe that the more the
number the better the specification…..a 5megapixel camera has got to
be better than a 2megapixel camera surely? Sure, but at what expense?
You need more HDD to store it (expense) and you need a good bandwidth
network to transmit it (expense) – of course, you can scale everything
back, throttle, dual stream, encode in CIF and all the other ways of
making the good quality image smaller and faster, but is that not like
buying a Ferrari and then only ever driving it at 30mph???

HD might change all this, at least in part to start with……High
Definition….. The very name smacks of expected quality…. If you
view a HD image, you are expecting a beautiful picture…..you want to
see the blade of grass on the ground and the badly shaven face of the
Serbian footballer on ITV 1 World Cup broadcasts (not wishing to spark
controversy but great result Serbs against the Germans!)……you want
to see the beads of sweat on the brows of ageing rockers on BBC
Glastonbury……..and HD delivers just that…….

And yet…..HD is merely 720p or at best, 1080p…… A mere 2
megapixels…… Pretty much at the maximum of what a really decent
monitor can display anyway…….but HD nonetheless

We saw a sneak preview of some of Sony’s IP opinions recently – HD is
their intended marketing vehicle……they think end users understand
HD…..they know that HD is embraced in the domestic sector…..and so
they are focussing their Security products as HD in order to gain a
quicker acceptance – and we think they are absolutely right

So why do we need more pixels? Maybe we don’t……just how many more
blades of grass do we need to see? Just how many more tufts of facial
hair on those footballers? And really, do we need to see more
perspiration on those rockers? If they are there, we just need to see
them and maybe even record them……for playback later……..just
like our security cameras

HD…..maybe that will kick us toward IP quicker!

IP camera 200 series from Bosch

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Bosch 200 series.

Bosch have recently brought onto the market the new IP 200 series IP camera range. The camera is an IP unit that comes in two versions, the IP camera 225 and the IP camera 255. Essentially the 225 is a fixed lens and the 255 is varifocal . The beauty of the 200 series is that you need no DVR. The camera is a networked solution and has recording ability on board within the camera using a 16 GB  SD card.

Clear crisp images.

The camera produces clear crisp images and all video can also be reviewed over the network using CCTV software that is supplied with the camera. The images are compressed using H.264 and this allows an additional 30% storage capacity over MPEG-4 . Both IP cameras are colour units and are ideally suited to reception areas or tills where they could be used in multi- site applications and accessed by 1 individual responsible for all sites such as car hire franchises or late night stores.

More benefits.

The IP camera 200 series has even more benefits, it is a single box solution and easy to set up. Simply remove the unit from the box, fix in the required position and connect to the network via an IP point. It has built in motion detection and also audio detection. As mentioned before with both on-site or remote viewing via PC and power over Ethernet this is a fantastic solution for those who have a problem on a single area of their site and need a quick easy security answer.

Conclusion.

Very competitively priced and simple, the IP 200 range can fit into many situations and will find many takers, especially for monitoring and recording sensitive areas where a full scale CCTV camera system quite simply is not required.

Perimeter Security CCTV Cameras

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Perimeter security camera.

Perimeter security has long been open to debate. Whats the best security solution to spend your money on? Lets face it for an intruder to get onto most sites they tend to pick the weakest  point . Often this is an area that is dark and difficult to patrol. Many methods exist to protect your boundaries . PIR sensors, often long range ones or maybe fixed beams? Vibration detectors buried under the ground have been used in the past to, also  Dome cameras driven by sensors are a popular solution. NOW however the most effective method to protect a perimeter is probably using a fixed camera complete with IR lighting and we have an additional tool to help us. This is analytics.

ZX55

The Bosch ZX 55 has been especially designed for this purpose. A well built piece of kit with a range of up to 300m. It comes together With a powerful integrated IR lighting system and is equipped with a 9-90mm lens. It certainly has all the tools requied for detection. However there is also an IP version vital to integrate into future CCTV software recording solutions. It is also the IP solution that gives the added benefit of analytics to help with the detection element that is so important  to ensure that the intruder is intecepted.

Costly?

It must be remembered that perimeter protection always comes with a price , not so much because of the equipment , but civil works, CCTV towers and the large amount of cable being required can put the price up. It is therefore crucial that the right solution is  well thought through and correctly specified because many companies rue the day when they thought that a cheap option would do!

Conclusion.

Think long and hard about external security, it can be a minefield if the design at the first stage is poorly concieved. Expert advice is very important and we have over 20 years in this particular field. So if you need feedback or advice on this subject we will be happy to help.

Why buy IP CCTV Cameras?

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IP CCTV.

IP CCTV has suddenly come to the fore in the last couple of years . It was particularly noticeable at IFSEC this year where analogue cameras seemed to be no more than an after thought . However what are the reasons that a CCTV camera format that has served the industry for so long should now so suddenly become a technology that will soon be confined to museums or very short sighted end users?

Life in the old dog?

Well perhaps that last statement was a little unfair. It will still take a while before we see analogue cameras disappear completely off the scene, perhaps long as 10 years, but in the meantime megapixel IP cameras will start to produce results that many organisations will find hard to resist. What results you may ask? Well for so many years every CCTV administrator has just wanted to zoom in on captured images and blow them up to prove an event has occurred. Up to now there has rarely been enough definition to achieve this goal . Any blown up or artificially enhanced images have been blurred or pixelated to the point where they are useless.

Why HD CCTV or Megapixel cameras.

Mega pixel especially does not however suffer this problem. The images remain clear and crisp as they are zoomed into on the played back recordings . Add to this stunning live images and you will understand why analogue is effectively dead. Examples of camera manufactures who have taken this technology and produced some excellent camera solutions include Avigilon, Arecont, 360 vision technology, Bosch to name but a few.

What is the catch?

So as the camera technology improves are there any drawbacks? Well of course there are . Due to bandwidth and processing limitations some of the 10 mp cameras can only deliver images at 3 frames per second. Slow to say the least but with such crystal clear images it is still better than 12 fps on an analogue alternative. Of course the camera technology may be slighty ahead of the networks that they need to deliver them to their recording solution ie CCTV software. However as CCTV software gets better and the speed and flexibility of networks increase as well as the processing power of the camera chips, we will eventually see the utopia in terms of megapixel technology and this can bring to the end user the ultimate CCTV solution.

Conclusion.

Are you an end user who is considering an upgrade? Perhaps you have upgraded already and are either impressed or disappointed in what you have purchased? Let us know your thoughts and we will be happy to publish them in order to help other organisations to make that important decision, to upgrade or not to upgrade?