Posts Tagged ‘Power over Ethernet’

Customer Solution: Power over Ethernet (PoE) for Intersection Monitoring

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Power over Ethernet for Intersection Monitoring

Improving traffic flow is a growing priority for expanding cities and towns, and one of the most efficient ways to reduce accidents and heighten safety is the use of intersection monitoring through video recording.  Not only is the video used to determine ways to decrease traffic congestion – it can also be reviewed for accident footage, fault resolution, and to assure that traffic systems are working correctly.

Power over Ethernet Intersection MonitoringA large city in the state of Iowa is improving its intersection monitoring system.  A total of seventy intersections with approximately two hundred cameras are currently deployed around the city, constantly recording traffic activity.  Along with cameras, other equipment is installed at the intersections such as preemption devices, conflict monitors, battery backup devices and other various sensors.  Preemption systems detect emergency vehicles and adjust traffic signals to allow high-priority vehicles to drive safely through the intersections.  Additional sensor data is recorded at the intersections such as car counting, lane changing, and speed of traffic.

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Total Power Control with Comtrol RocketLinx® Power over Ethernet Switches

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PoE Devices

– Joe House

As the number of network connected devices continues to increase exponentially, an uninterruptible network continues to get more valuable.  Without power, you have no network – without a network you may as well have no devices!

While there are many methods a system can employ to create redundancy, the base of redundancy often relies on three letters, UPS (Uninterruptible Power Supply).  Regardless of the electrical chaos that may occur in every area around a system, the battery backup UPS maintains power to the parts of the system that need it most.  If you plan to keep a series of PoE devices alive on a UPS, Comtrol’s RocketLinx switches have two key features that can help keep your UPS running like the Energizer Bunny®.

PoE Device

Before we get started: Where are the DC Power inputs on Comtrol’s Power over Ethernet switches?  Most of Comtrol’s PoE switches support redundant DC power inputs (accepting various input voltages depending on model, but shown with +48VDC here) via screw terminal connectors as shown below.  Taking some artistic liberties, you can see how two power supplies could be wired up!

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SERIES: Power over Ethernet Features – Part III

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Rebooting non-PoE devices using Comtrol’s RocketLinx® switches

Have you ever wanted the ability to cycle the power to an IP camera (or any other device) remotely but couldn’t? … Either because it is not a PoE powered device in the first place, or because it is a PoE++ camera that consumes 60+ watts of power and has its own custom power injector?

If that is the case, you may find this little trick of great interest for your next camera deployment where you may need to hang one of those monster PoE++ cameras on a pole in a remote location, or work on a city-wide surveillance project – and getting someone up on a ladder to manually cycle the power is no small feat.

Here is how the trick works. 

First, select any of Comtrol’s managed RocketLinx Ethernet switches.  All of them have a relay that can be controlled via the online web interface.  The relays on our switches are normally open and rated for a max of 24VDC @1amp so you will also need an industrial-grade relay in this setup as well.

In this example, we are using this Potter & Brumfield relay with our switch that will accept a 24VDC coil voltage and will allow up to 10A 240VAC to be pumped through the contact.  A relay socket can be plugged into the relay which makes it easier to make the connections.

Here is the general diagram for making the necessary connections.

PoE

Once everything is wired, log into the web interface of the switch, open the warning folder and select the fault relay file.  It will open to this screen.

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Selecting a PoE Switch: A powerful decision

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PoE Switch

You just picked up some new Power over Ethernet devices – a few of the hottest new IP cameras. However, after opening the box you run into a series of unexpected problems.

PoE panel fitting First: Each camera comes equipped with its PoE injector capable of supplying the appropriate level of power.  However, prior to even mocking up your panel it becomes clear – four PoE injectors and a standard Ethernet switch will not fit!

In an effort to maintain a reasonable panel size, you ditch the PoE injectors in favor of a Power over Ethernet switch, a single product that will replace all four injectors and provide Ethernet switching.  So far so good.

Second: After deciding that a PoE switch will best suit your need, you set out on a search for the cheapest PoE switch you can find.  Before long you realize the injectors were provided so that the cameras receive the exact amount of power they are optimized to run at.  With this new concern in mind, the search moves from the “cheapest switch” to the “right switch.” In order to identify the right switch, you will need some information… but where do you look?

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SERIES: Power over Ethernet Features – Part II

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Monitoring power consumption of a device that is connected to a managed RocketLinx® Power over Ethernet switch

Power over Ethernet device power consumptionWinter is setting in, the days have gotten shorter, and the nights longer.  After a long cold day you find yourself lying in bed staring at the ceiling.   You start thinking about the day’s events and as you drift off somewhere between consciousness and sleep, you start to think about a project that you did this past summer where you deployed several outdoor 802.3at PoE+ cameras for a good customer of yours.  The thought of a summer project brings warm thoughts of fishing, camping and swimming… and your mind goes back to the project.  You wonder, how are those cameras holding up as each passing day gets colder and colder?

You bold upright in bed in a cold sweat.  Did I ever check to see if the cameras’ heaters came on??

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SERIES: Power over Ethernet Features – Part I

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PoE benefits that you rarely hear about: What do these mean for your next IP surveillance project?

Power Over Ethernet Surveillance As a security project integrator, you find yourself in the beginning stages of a surveillance project and you have determined that using IP cameras are the way to go.   You sat down with your customer to identify all the security needs, consider what types of IP cameras to use, determine where best to place them, study and select the most feature-rich and easy-to-use VMS (Video Management Software)…and you are ready to go!

Now somewhere in this grossly oversimplified scenario, you and your customer have decided to use PoE powered cameras to make for an easier, more flexible and cost-effective deployment.  No doubt both of you have read some of the information floating around the web that commends the cost saving benefits of deploying a PoE powered network, or you have had past experiences installing PoE cameras and know well enough from those experiences.

Here are some of the lesser known benefits to deploying a PoE network provided you use a managed switch to power your cameras, and more specifically a Comtrol RocketLinx® PoE switch.

Ability to cycle PoE power or use PD (Powered Device) Status Detection to reboot a camera

>>> Fast forward.RocketLinx Power over Ethernet Switches

Your customer is thrilled with the increased resolution and all of the other advanced features the IP camera and VMS system are providing after the surveillance system is installed.  You then get a call to hear that the VMS has sent an email alert saying one of the cameras is down.  Let’s say this isn’t your first rodeo, and you know that the VMS you selected will proactively sever the data connection and reconnect in the hopes that it will restore a good connection with the camera. That did not work.

Not to worry, you are a bit more tech savvy and have learned that you can send a reboot command to your IP camera via FTP; however, that too does not work.  Rebooting via FTP fails because using this method requires a communication link with the camera.  During camera failure a link may not be established, therefore leaving FTP communication impossible.

Now what?  You quickly dispatch a tech who drives for a half hour or more, climbs a ladder, pulls and then reinserts the PoE cable on the camera, and the system is operational again.  Crisis averted – but how much money did you just spend sending out that tech?

When a camera is completely non-functioning, reboot methods that rely solely on data communication (VMS and FTP) may not always work.  In these cases, the most effective method may be to cut the power, just as a tech would after yanking the PoE cord.  How can you avoid sending that tech to cycle power?  You can do the same thing with Comtrol’s managed switches remotely.  All of our managed RocketLinx PoE switches give you the ability to either manually or automatically cycle the PoE power per port.  When the PoE power is cycled on a camera it acts as if you just physically unplugged the camera.    The camera completely starts over and refreshes itself, much like holding down the power button on your PC when your initial attempts of pressing CTRL + ALT + DELETE while cussing has proved fruitless.

To cycle the PoE power through our switches per port, all you need to do is log into our switch via the simple web interface, scroll down to the ‘Power over Ethernet’ menu, open the ‘PoE Control’ menu and toggle the switch from ‘Enable’ to ‘Disable.’  That will manually cycle the power to the camera or device connected to that port.

Power over Ethernet Control

Or better yet, you can set Comtrol’s switches to do this automatically. You will also notice in the ‘PoE Control’ menu that there is a PD status detection menu.  To enable this function when you are creating your network, be sure to put the specific IP address of your camera in the ‘PD Status’ window and set your cycle time to tell the switch how often you want it to check to see if the camera is “alive.” Hit ‘Apply’ and ‘Save settings to flash’ and you are ready to go.

Most basically an “alive check” is just the switch pinging the camera.  If no reply is sent back after three tries, it will automatically try to reboot the device by cycling the PoE power on that given port.  Additionally, you can configure the switch to send you an email stating that it rebooted a particular port (this process will be explained in a future post), or and or be configured with the internal dry contact relay to trigger an event at a local alarm panel upon camera failure.

PoE PowerNow there are some instances where a camera can be pinged and it’s not sending video.  This automatic feature will not attempt to reboot the camera.  In this case it’s likely one of the other fail-safes within the VMS would have caught and corrected that initially, or you will have to still toggle the port power via the manual method outlined above.

If none of this works, then it’s time to send out the tech! However, simply utilizing our switches’ ability to cycle the PoE power remotely in your next deployment could more than make up for the cost of sending out a tech once to do the same thing manually.

Worldwide Release: RocketLinx® ES7510-XT

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RocketLinx ES7510-XT

RocketLinx ES7510-XT

MINNEAPOLIS, Minnesota – October 17, 2012

Comtrol Corporation, a leading manufacturer of industrial device connectivity products, today announced the release of the RocketLinx ES7510-XT switch to its Power over Ethernet switch product line.  The RocketLinx ES7510-XT is a fully managed industrial-grade rack mount switch equipped with eight 10/100BASE-TX PoE Plus ports and two Gigabit Ethernet RJ45/SFP combo ports. Featuring a rugged design for harsh environments, intuitive web, CLI, SNMP management options, power scheduling and eight fully-compliant IEEE 802.3at PoE injector ports, the ES7510-XT is easily installed in industrial settings and traffic cabinets supporting even the most power intensive devices such as IP cameras with heaters and PTZ (pan/tilt/zoom) controls.

The Comtrol RocketLinx ES7510-XT is designed to meet the high power and advanced management needs of critical traffic applications such as real-time IP video surveillance and wireless communication utilizing outdoor rated IP cameras and high power IEEE 802.11 access points. In addition to functioning as a PoE power source, the ES7510-XT includes advanced device controls, ensuring that power consumption does not exceed parameters defined by the user.  The switch also features a wide -40° to +74°C operating temperature and NEMA TS2 rating, making the switch an ideal solution for use in traffic applications.

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License Plate Recognition System Connectivity

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License Plate Recognition

As criminals are using more sophisticated tactics to implement attacks and escape punishment, security is becoming increasingly important for our law enforcement officers. Staying one step ahead of offenders requires consistent technological and intelligence innovation, and our officers continue to look for ways to keep this innovation moving forward to streamline security and law enforcement systems.

A license plate recognition (LPR) software company has introduced one such system innovation which aids officers in vehicle and criminal identification.  This License Plate Recognition software uses advanced optical character recognition to read any plate that passes in front of an integrated video camera, and instantly compares that information to crime databases for active warrants or other alerts.  If the software receives a positive hit, it alerts the officer, adds vehicle information to an internal database and instructs the camera to store the video.  The officer then has identification information for the vehicle and is able to take immediate action.  In the past, License Plate Recognition systems have required more space, cost, time and equipment than a software-only solution.  This specific software operates efficiently with any Windows PC system and IP camera(s), as long as the camera records a quality image. 

License Plate RecognitionA particular customer’s License Plate Recognition system contained specific high-power IP cameras installed in its police cars, posing a problem and potential risk.  The cars provided a significantly low initial voltage input (12VDC), which likely meant extra equipment was necessary.  The License Plate Recognition software company then discovered Comtrol’s RocketLinx® ES7106-VB (voltage boost) PoE (Power over Ethernet) switch, which used the 12VDC input power from the police cars’ cigarette lighter receptacles and converted or “boosted” output power to 48VDC – sufficient voltage to power the cameras.  Installing the switch eliminated risk of potential power inverter overheating problems, and the configuration needed no extra cabling, power supply or conversion/inversion of power between the source and the switch.  The company had previously found these extra components necessary when recommending select hardware to customers. 

Comtrol’s RocketLinx ES7106-VB switch was chosen not only for simplification, but for its durability, rugged housing and reputable name.  It is equipped with four 10/100BASE-TX PoE injector ports, with each port delivering power up to 15.4W, and two 10/100/1000BASE-TX (Gigabit) Ethernet uplink ports for transferring ddata to the network.  The switch also supports QoS, which ensures high-quality video traffic transmission by adjusting the data transfer priority.  The RocketLinx ES7106-VB is an IEEE 802.3af compliant PoE switch designed for connecting a wide range of industrial PoE equipment such as IP surveillance cameras, wireless access points and other devices utilizing 12/24V vehicle power sources or 24V standard industrial power. 

Download PDF version of story here

Transportation & Bus Surveillance: Mobile Security

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As public transportation is becoming more popular in North America, following successful models used in foreign transportation systems can help guide our decisions and processes concerning public safety initiatives.

Adding surveillance to improve the safety of public transportation is one such example.  A European bus company was looking for an industrial Power over Ethernet (PoE) switch to connect critical components of its mobile security system.  Installations on the bus included six security cameras, a network video recorded (NVR) and a Wi-Fi router, that all required communication and power.  Devices used in transportation surveillance systems such as on buses or trains have a unique set of requirements and specifications that are crucial to operability and efficiency.  Devices must be compact and rugged to maximize available space, reduce crowding and survive extreme temperature conditions and harsh environments.

power over ethernet mobile security RocketLinx voltage boost

Comtrol’s RocketLinx® ES7110-VB (voltage boost) switch is used in this security configuration to ensure quality system performance and to meet the system specifications. As cameras send data and video to the NVR, it is transferred wirelessly from the bus to a remote monitoring room via the Wi-Fi router.  The RocketLinx ES7110-VB has eight 10/100BASE-TX PoE injector ports for directly powering remote equipment and reducing wiring and installation costs, and two Gigabit uplink ports for megapixel video transmission and high-quality streaming data and video.  Additionally, the switch provides a 12/24VDC power input boost to 48VDC, eliminating the need for a separate power supply or voltage converter to conserve space and cost.


Featuring a DIN rail mount and measuring less than two inches in width, the ES7110-VB works well with limited space and other equipment placement in a surveillance system.  Dual redundant power independent power inputs for potential power loss enables a backup power supply to compensate for loss of main power and maintain camera operation.  The rugged IP30 enclosure protects the switch from vibration and shock, while the -25° to +60°C operating temperature allows for installation in a variety of environments.

Comtrol’s RocketLinx Power over Ethernet switches are engineered for industrial applications such as IP video surveillance or wireless broadband, where the power source is not conveniently located.  With rugged, drip-proof housings, redundant power inputs and performance command-line interfaces, these PoE switches provide reliable networking solutions.

With both managed and unmanaged models available, the RocketLinx ES series of switches provide cost-effective networking solutions delivering the industry’s best rugged Ethernet switch technologies.

Download PDF here >>

Comtrol’s DeviceMaster: PoE-Enabled

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power over ethernet splitter devicemaster rocketlinx device server

To do this, you will need to use a Power over Ethernet (PoE) splitter.

The PoE splitter will take in power and data (IEEE 802.3af standard PoE) via a single RJ45 Ethernet port and split this into standard Ethernet (no power) and reduce power to +24VDC.  By connecting the Ethernet cable from splitter into the RJ45 jack of DeviceMaster, and wiring the splitter’s power cord into three-pin power terminal on the DeviceMaster you will have a fully connected – and PoE enabled!- device server.

power over ethernet rocketlinx devicemaster serial device server gateway

The products you will need to do this are:

poe power over Ethernet DeviceMaster device server PoE power over Ethernet DeviceMaster RocketLinx RocketPort

DeviceMaster RTS 1-Port (99440-4)

Power over Ethernet Splitter (1200054)

2 Ethernet cables

MSRP: $269 MSRP: $149 1 from switch to PoE splitter, 1 from PoE splitter to DeviceMaster

For more information about how to do this configuration or about any of Comtrol’s products, contact sales@comtrol.com or 800.926.6876


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