MATRIX

Posts Tagged ‘Technology’

3D scanner: 3D scanning implies analyzing the real-world environment or objects for collecting data on their appearance, i.e. color and shape. Digital 3D models can be constructed from the data collected. Such devices are being used by the amusement industry extensively for producing video games and movies. This technology is more widely used in reverse engineering, industrial design, prototyping, keeping records of cultural artifacts, and computer vision. A number of technologies have been used for building the three-dimensional scanning devices. Every technology has limitations, costs, and advantages.

Functionality: The idea behind using a three-dimensional scanner is creating a Point Cloud of the Geometric Samples on the subject’s surface. The subject’s shape can then be extrapolated by using these points. If information regarding color is gathered at every juncture, the determination of colors on subject’s surface can be easily done. 3D scanners share analogy with cameras. If one tries to define a Spherical Coordinate System wherein the origin would be the scanner and vector would be drawn from front of it such that θ=0 and ¢=0, then every point in picture would be associated with θ and ¢. Combined with distance that corresponds to r component 3D position of every point in picture is described by the spherical coordinates.

Technology: 3D scanners consist of two types- non-contact and contact. Non-contact three-dimensional scanners could be divided further into 2 major categories- passive and active scanners.

Non-Contact Active: Some light or radiation is always emitted by active scanners. It is advised to detect the reflection of this light, as it would help in locating environment or an object. The kinds of emission possibly used include x-ray, ultrasound, or light.

Contact: Contact three-dimensional scanners locate the subject by the way of physical touch. The best example of contact three-dimensional scanner is a CMM (Coordinate Measuring Machine). It is widely used in manufacturing processes due to its precision. However, it has a disadvantage that contact with object to be scanned is required. The target object might get modified or damaged by scanning. Historical artifacts, in particular, have to be specially taken care of.

3D Prototyping: 3D prototyping is the subset of rapid prototyping. The basic advantage of 3D prototyping is that numerous materials can be used as base materials. It involves taking of virtual designs through CAD (computer-aided design) or Animation Modeling software, transforming them into virtual, thin, and horizontal cross sections, and then creating every cross-section in the physical space, 1 by 1 till the model gets completed.

It should be noted that STL File Format is the interface between machines and CAD software. This interface carries out the approximation of shape of an assembly or part by making use of triangular facets. Surfaces of a superior quality are produced by smaller facets. 3D prototyping is believed to be the ‘next level’ equipment by most of the experts of this field. Pioneer companies are striving to master the technique. The conservative prototyping machines cost around 25000 pounds, as per the study conducted in the year 2005.

Bluetooth technology is a type of the wireless technology that eliminates the need for the number of inconvenient cables and devices that are used to connect the computers, mobile phones, digital cameras, handheld devices and new digital appliances. Bluetooth enables the users to connect to a wide variety of telecommunication and computing devices easily, without cables.

It makes rapid ad hoc connections, automatic unconscious connections between two or more digital devices.

Bluetooth provides the opportunity of using the mobile data in different applications. Bluetooth makes wireless communication between the two devices in a localized area of a room of office or home very easily. Bluetooth technology uses radio-based links and all the connections between the devices and invisible and instantaneous.

By Bluetooth technology your laptop can send print request to a printer in your next room. Bluetooth is actually a standard for wireless communication between the devices in a relatively small area and it is therefore works fine in the personal area network (PAN) using radio frequency.

Any two devices that follow the Bluetooth standard can communicate with each other. A number of the Bluetooth devices like digital camera, mobile phone and handheld pc can form a network. You can send emails to your mobile phones from your laptop without any physical connect between your laptop and your mobile phones.

Features of Bluetooth technology

•Bluetooth technology uses radio waves for communication in 2.4 GHz

•It supports multipoint communication not just point to point.

•Bluetooth works in a small area of 10-15 meters.

•Bluetooth offers speed of 1-2 Mbps.

•Bluetooth chipsets are less expensive though more expensive than IrDA.

How Bluetooth Technology Works

Bluetooth is a high speed wireless link technology that uses the radio waves. It is designed to connect the mobile phones, laptops, hand held devices and portable equipments with almost no work by the end users. Unlike infrared Bluetooth does not require line of sight between the connecting units. Bluetooth technology is a modified form of the current Wireless LAN technology and it’s more acceptable for its relative small size and low cost.

The current circuits are contained on a circuit board of 0.9 cm square and a much smaller single chip version is in development and soon it will be in use. The cost of the Bluetooth device is expected to fall rapidly. Bluetooth chip has to be equipped in many devices. In Bluetooth technology, small and inexpensive transceivers have been placed in the digital devices.

The radio waves operate at 2.45 Ghz band on the Bluetooth devices. Bluetooth supports the data speed up to 721 Kbps and 3 voice channels. The Bluetooth chip can either be built into the devices or it can be uses as an adapter. In computer it can be used with the USB port. Each Bluetooth device has a 48 bit address from the IEEE 802 standards and the Bluetooth connections can be either point to point or multipoint. Bluetooth range is 10 meter but it can be extended up to 100 meters by increasing the power.

Bluetooth devices are protected from the external interference because they change their frequency up to 1600 times in a second. Bluetooth radio technology provides the bridge between the existing data network. Bluetooth guarantees security at the bit level and the authentication is controlled by the end user by using 128 bit key. An important face of the Bluetooth technology is that it instantly forms a network when two or more devices come closer in the range of each other.

Bluetooth Technology Benefits

Bluetooth technology is a convenient choice of communication in a wire free, short range environment. Bluetooth is a globally available standard for connecting the devices like mobile phones, digital cameras, laptops, MP3 Players, cars, stereo headsets etc. Bluetooth enable devices do not need to install any drivers. The key benefits of the Bluetooth wireless technology are its built-in-security, low cost, easy of use, robustness, and ad hoc networking capabilities.

The Bluetooth wireless technology is available globally. Many manufactures from the different companies are busy to implement the technology in their products. Bluetooth technology operates in the 2.4 Ghz, one of the unlicensed, industrial and scientific radio band. Bluetooth technology is a free of charge service but your mobile phones set should support the GSM and CDMA technology.

Today mobile phones have built in capabilities and Bluetooth functionalities in them. Bluetooth technology is available in the different range of the devices like mobile phones, automobiles, medical devices, industries and enterprises etc. Due to the key features of the Bluetooth technology like low power consumption, low cost and wireless features make it more popular. Bluetooth technology does not require any fixed infrastructure and it is very simple to install and setup.

LED, or light emitting diode, technology is something consumers are hearing more and more about from television advertisements, magazine ads and news reports. However, very few people understand why this light source is such a powerful alternative to traditional lighting. The advantages of LED light sources over other technologies are numerous but can be simplified into two main categories: 1.) energy efficiency & longevity and 2.) power & versatility.

Benefits: Energy-Efficiency & Longevity

- LED light bulbs generate only trace amounts of heat, resulting in nearly all of the electrical energy consumed being used toward creating the light itself. Incandescent, halogen or fluorescent lights can use up to 90% of their energy consumption producing heat-carrying infrared light photons which do not produce visible light.

- LED light bulbs produce more light per watt of energy.

- Standard LED light bulb are estimated to burn for 35,000 to 50,000 hours at full capacity before requiring replacement (some high-quality LEDs even boast 100,000 hours). Incandescent burn for 1,000 to 2,000 hours.

- LED technology is perfect for applications that are frequently turned off and on, like flashlights. Fluorescent bulbs burn out more quickly when they are frequently switched on and off.

- LED light bulbs are solid state components, which are difficult to break, unlike incandescent, fluorescent and halogen bulbs which have internal filaments that can easily break.

Benefits: Power & Versatility

- When compared watt-for-watt to an incandescent bulb, LED light bulbs produce more light per watt than any other light bulb.

- A single LED bulb can produce twice as much light (as measured in lumens) as a traditional bulb.

- LED light bulbs light up quickly, providing full brightness in micro-seconds.

- LED light bulb are much smaller than regular bulbs making them perfect for a variety of applications

- LED light bulbs do not use any mercury.

- LED technology is designed to focus the light better for a more intense, bright light.

- LED light bulbs maintain their color when dimmed, unlike incandescent bulbs which turn yellow.

- LED light bulbs can be built to emit color without using costly colored filters, which drive up the cost of traditional colored lights.

With these benefits, LED light bulbs can be used in a countless number of applications. Hunting, fishing and camping enthusiasts can be confident that with a LED flashlight in their gear, they will have adequate, powerful light that will last for days on one set of batteries and years on one light bulb. They will also be pleased to find this technology built into a number of form factors, all specifically designed for specific activities – headlamps for cave hikers, flexlights for fishermen, lanterns for campers and torches for hunters.

Home owners will be able to see power consumption reduction and lower electric bills within one month by transitioning light bulbs in the kitchen, bathroom or living room to LED replacement bulbs.

Perhaps one of the best reasons to switch to LED light sources is to lessen your footprint on the environment. By switching to LED light bulbs, you are not only saving money by using less energy, you are also helping the environment by preserving our resources. In an environment that needs the earth’s inhabitants to use less and save more, LED technology lights the way.