Monthly Archives: February 2017

5 Ways to Extend Your Data Communications Without Limits

Your network is only as effective as its reach – yet unbalanced signals such as USB and RS-232 can reliably transmit only up to 15 feet, and even balanced Ethernet signals are capped at 300 feet. With a growing range of connectivity platforms, modern data networks require not just compatibility and reliability but also flexibility and expandability. There are many ideal solutions to meet modern networks’ data distance needs such as converting unbalanced signals to balanced ones, deploying repeaters to boost signal strength, and implementing hubs for star-configured connections, while still taking full advantage of cost-effective and readily available copper wire. For large systems that go far beyond what copper wires can reach, fibre-optic converters can used to work in both conventional point-to-point and advanced daisy-chain / redundant-ring configurations, giving your data network a boost in distance, ranging from 3 miles to hundreds of miles, and additional flexibility, reliability, and expandability. The use of a Serial-TCP program is another ideal solution for merging serial communication protocols with modern TCP/IP communication, yielding benefits such as widely available infrastructures and greater distance, reliability, and speed.

Point to Point

Used mostly for one-to-one unbalanced signal (RS-232, TTL, and USB, etc.) extension, it can also be used for one-to-one optical fiber extension. Depends on the signal types, the extended distance ranges from 250 feet (70 m) to 4000 feet (1.2 km) on copper wire and 3 miles (5 km) to 40 miles (25 km) on optical fiber.

Daisy Chain (Multi-Drop)

Typically used for multi-drop RS-485 / RS-422 networks, addressable commands from the Master can be sent to all Slaves, and the addressed Slave can respond to the Master through the same wires, thus reducing the system’s costs. The typical distance for a daisy-chain RS-485 / RS-422 network is 4000 feet (1.2 km), and with the RS-485 / RS-422 repeater, this distance can be extended by another 4000 feet (1.2 km).

Star Wiring

Due to the nature of the signals and the requirements of impedance matching, the RS-485 / RS-422 network must run on a linear, daisy-chain (multi-drop) configuration; however, star-wiring is inevitable in many places. With very well-engineered hubs, the star-wiring configuration is more than just possible; it makes the system much more robust and reliable.

Redundant Ring

Data networks are critical for production, security, and information exchange, any system downtime is very costly – and even deadly in some situations. With an extra self-healing redundant link, a system will not break down even if there is a breaking point in the system, as these redundant-ring networks work both clockwise and counter-clockwise. If the clockwise link is down, the counter-clockwise link will recover the system instantly.

Network

Legacy serial communication protocols such as Modbus have merged rapidly with modern TCP/IP communications, yielding benefits such as widely available infrastructures and greater distance, reliability, and speed. A suitable Serial-TCP program offers ideal solutions to bridge your existing Serial/COM port and TCP/IP without the need for changing protocol. It works seamlessly and transparently, just like a pair of passive repeaters; furthermore, instead of requiring installation of cables and converters with limited distance, it simply makes use of existing computers and networks with an unlimited transmission distance.

To achieve any of the above 5 ways to enable your data travel without limits, CommFront has the complete product range of converters, repeaters, hubs, fiber-optics, and software solutions to make it all possible.

Article Source: http://EzineArticles.com/9436033

Cloud Computing!

shutterstock_1139108621Cloud computing has revolutionized the way technology is used to share information and resources to achieve coherence, relevance and economy of scale. These three factors are hugely important today when individuals and businesses require being in the forefront of their activities and achieving profits and revenues while reigning in expenditure.

This kind of computing is the method or model of internet-based computing that provides on demand, processing capabilities as well as data to computers and other devices on a network through a shared pool of resources such as applications and services, networks, servers and storage devices, which can be requested and used with minimal effort. Cloud computing enables businesses and users with capabilities to store and process vital data in third-party data centers.

In simple terms, cloud computing means the storing and accessing of information and applications over the internet instead of leaving them on local hard drives or in-house servers. The information accessed is not ‘physically close’ and the metaphor ‘cloud’ relates back to the days of flowcharts, graphs and presentations where the server infrastructure was depicted as a ‘puffy, white cumulus cloud’ that stores and doles out information.

Cloud computing or ‘the cloud’ as it is commonly known enables a ‘pay as you go model’. The availability of low-cost computers and devices, high-capacity networks and storage devices as well as complementing factors like service-oriented architecture, adoption of hardware visualization and utility computing have contributed to the success of cloud computing in a very big way.

Cloud Computing Architecture

The five specific factors that define cloud computing are:

• Broad network access
• On-demand self service
• Resource pooling
• Measured service
• Rapid elasticity or expansion

Broadly, that sums the essence of this kind of computing. However, there are several loosely coupled components and sub-components that are essential to make computing work. These are divided into two sections – the front end and the back end which connect to each other via the Internet.

The Front End is the physically visible interfaces that clients encounter when using their web-enabled devices. Not all computing systems use the same interfaces.

The Back End comprises all the resources that deliver cloud computing services. These are essentially virtual machines, data storage facilities, security mechanisms etc. that together provide a deployment model and are responsible for providing the ‘cloud’ part of the computing service.

Benefits

Exponents of computing are quick to praise it citing the many advantages and benefits it provides. Among the many benefits, the prime ones are:

• Enables scale up and scale down of computing needs
• Enables businesses to avoid infrastructure costs
• Allows companies to get applications running quicker and faster
• Improves manageability and adjustability of IT resources to meet fluctuating business demands
• Reduces maintenance

The high demand for cloud computing is further enhanced by the advantages of cheap service costs, high computing power, higher performance and scalability and easier accessibility and availability.

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Getting The Perfect Drone For Your Child

Drones make very popular gifts for children and with so many models available for kids, you will find one that your child will love flying. Drones are generally safe for children and you therefore have nothing to worry about. You can actually improve your family time when you get a drone for your kids complete with a camera to capture those moments in the park or around the house or garden.

The good thing about kids is that they are fast learners and it will take a short moment for them to learn how to safely control the drones. It is however still important that you supervise the kids as they enjoy the flying. When you are out looking for the best drones for kids, you will realize that quality increases with price. But there are so many sturdy and cheap drones you can get for your kids. With the right selection, you will be able to purchase a drone that is easy to fly, easy to maintain and one that is durable for that matter.

Consider the minimum flying age

The truth is that drones are not suitable for kids of any given age. Drone manufacturers do give age recommendations when it comes to the mini drones with eight years being the cut for most. You can however also use child maturity to determine what age is perfect for them to own and fly a drone. Whereas age of 10 may look suitable enough, children who are familiar with robotics and such may be able to fly the drones at younger ages. The age should also guide to the drone features that are relevant. For instance, kids over age of 12 will most likely find action camera drones more appealing than those without.

Check speed and size

These are the two elements that play a role in drone accidents. When choosing drones for kids, it is safer that you go for the model made of ABS plastic that is lightweight and durable. This kind of a drone eliminates the damage that could be caused by a much heavier or larger drone, especially when a child is just learning to fly. Small toy drones are basically harmless. Lower yaw rate are also best for kids. Propeller rotating speeds should be selected accordingly to minimize dangers when children are learning to fly. Slow flying drones are safer for kids, but you can always upgrade the size and speed according to the age and skill achieved.

Think about flying environment

You can either get an indoor or an outdoor drone for your child or one that can be flown in both environments. Indoor drones have stable hovers and very responsive commands whereas outdoor drones should at least be wind resistant and feature motor power to keep hover stable. Before buying, ensure that you have enough space to fly it, whether indoors or outdoors. The last thing you want is to have your kids fly the drones in your neighbor’s space which can be privacy invasion.

Drones for kids can keep them busy and excited as long as you choose a safe and secure model. Find out all about the drone before buying so you are sure it is the best for the child.

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Drone Parts and Components

Drones are becoming more and more autonomous and easier for drone owners to control. There are some fundamental components all drone owners should be familiar with, which keep the drone in the air. Some people opt to construct their drones themselves instead of purchase a readymade drone, which often reduces the costs. This article will cover the basic parts of a fully functional drone and their functionality.

Quadcopter frame

This is a structure (frame) in which all the other parts fit in. It acts as a skeleton in which different components are placed in such a manner that they uniformly distribute the drone’s center of gravity. Different drone’s designs have different quadcopter frames structure with a minimum of 3 propeller fitting gaps. They are available in various shapes and sizes and their price ranges from a mere $10 to $500 depending on their quality.

Motors

Motors are essential for the propeller’s rotation. This enhances a thrust force for propelling the drone. Still, the number of motors should be the same as the number of propellers. The motors are also fitted in a way such that they are easily rotated by the controller. Their rotation enhances the drone control in terms of direction. Choosing the right motor is really essential for the efficiency of the drone. You have to check carefully about various parameters such as voltage and current, thrust and thrust to weight ratio, power, efficiency and speed etc.

Electronic Speed Controller (ESC)

This is an electronic control board that varies the motors speed. It also acts as a dynamic brake. The component still helps the ground pilot to approximate the height at which the drone is running in. This is attained by gauging the amount of power used by all the motors. Altitude is associated with power drain from the power reservoirs.

Flight Control/Board

The flight board makes a log of the takeoff place just in case a need arises for the drone to go back to its takeoff location without being guided. This is known as ‘return to home’ feature. It also determines and calculates the drone’s altitude in respect to the amount of power it consumes.

Propellers

Propellers are clove like blades structured to create a difference in air pressure. When in motion, they cut through the air creating difference in pressure between the top of the rotors and the bottom. The top side is characterized by low pressure as compared to the bottom causing the drone to lift into the air. The price starts from as low as $1 and follows an upward trend depending on their make and model. For example, carbon fiber propellers cost around $50. They are light weight and are break proof, which are qualities not present in propellers costing around $10.

Radio Transmitter

It is a channeled transmitter and a communicator to the drone. Each channel has specific frequency capable of steering the drone in a certain motion. Drones require at least 4 channels for effective operation.

Battery, Electronics and Power Distribution Cables

The battery acts as the power source to the drone. It supplies energy in all the electronics in the framework through the power distribution cables. Nickel Metal Hybrid or Nickel Cadmium based batteries were first used, however, their use has diminished while the use of lithium batteries has increased. They can store a greater amount of energy than the Nickle Cadmium and Nickle Metal Hybrid. The rating of a typical battery is 3000mAh and 4V. It costs about 10$. The electrical and electronic part is a crucial part pertaining to the control and operation of the drone. However, in respect to the purpose of the drone, other components can be either included or omitted. The drone may be functional without these parts, though for multitasking purposes it’s advised to include them.

Camera

For video shooting, cameras are attached to the drones. Cameras with the capability of shoot and store or shoot and send are available and used in relation to the operator’s taste or budget. Some use their own cameras while the quality conscious use GoPro cameras.

Landing gear

This is a structure meant for safe landing of the drone. However, it can be exempted since an experienced user is capable of balancing the motors speed for safe landing in emergencies. There are two major types of landing gear. One is fixed landing gear and the other is retractable landing gear.

First Person Video

Though it is expensive in comparison to the normal control device interface (transmitter) screen, it gives the user an interactive 3D view experience. The first person view (FPV) gives the user an ultimate feeling of as if the user is flying in the skies. There are two major components of an FPV system. The first one is the ground component. The ground component is also called the ground station. It consists of a video receiver and a display system on the ground. The second major component is the video receiver. The video receiver receives the data by matching the frequency of the receiver with the transmitter present of the drone. The most common frequencies used for transmission of video are 433 MHz, 869 MHz, 900MHz, 1.2 GHz, 2.4 GHz and 5.8 GHz. Advanced versions of ground components have sophisticated antennas which result in greater image resolution. The airborne component has a camera and a video transmitter on the drone. These are the basic components of a basic FPV system. However, advanced FPV systems have advanced components and functions. For example, the FPV system can be added with a GPS navigation system. It can also have flight data systems. Further advanced FPV systems have “return home” systems which allow the drones to come back to the position from where they initially took off.

In conclusion, these are the major components of a drone. Choosing the right component according to your requirements is a must. You are the one who is going to fly the drone so you know better. The components are available in abundance from various online stores and can be bought easily. Buy them, assemble and combine them and have the time of your life flying your drone.

Article Source: http://EzineArticles.com/9412752