Friday 29 May 2015

Formula One Pit Crews Embrace 3D Printed Noise Cancelling Earpieces From Minerva Hearing

The sound of a racing motor at full throttle is a singularly powerful noise. While changes in Formula One motors, from V8s to the turbocharged 1.6-liter V6 motors of this season, mean they generate 15,000 RPM, which is 3,000 RPM less than last year, and though the smaller engines have made them significantly quieter, they’re still loud.


Now that scientists are warning people around the world of the dangers of prolonged exposure to high levels of noise, a Welsh company is using 3D printing to create earplugs to prevent hearing damage to everyone from musicians to Formula One mechanics.599468_513770338658254_1536909041_n


As a point of reference, you can tolerate the noise generated as you ride in a car – around 85 dB – for about 8 hours before hearing damage begins to occur. An average motorcycle generates 95 dB, and you can take about 47 minutes of that, and a loud rock concert can pound out 115 dB.


While the new generation of F1 cars creates some 80 dB of sound, the old V10-based cars pumped out 130 dB. At a level of 128 dB, your hair can actually begin to detect vibration from sound, and at those levels, hearing can be altered in a matter of seconds. A very small hand grenade or bomb can create up to 210 dB.


All this is important as one part of the inner ear, the cochlea, contains some 17,000 small hair cells called stereocilia which float inside cochlear fluid. When sound waves enter the cochlea, the stereocilia move, and that triggers an electrical impulse in the auditory nerve. The nerve passes those electrical impulses to the brain where they’re decoded as “sounds.”


Here’s the problem: once damaged, stereocilila don’t grow back.


Kevin Davies, operations director at Minerva Hearing Protection in Cardiff, Wales, says his company’s custom hearing protection devices built with 3D printing technology have been used for everything from providing protection for the pit crews on the F1 circuit to musicians on stage.


The products are custom molded to an individual’s ear canal to completely eliminate external sounds, and they’re formed in 3D printed hard acrylic. The earplugs feature tiny, built-in acoustic filters which take into account the natural response of the ear.IF


“With Formula cars producing volumes over 100dB under race conditions, multiplied many times over in a busy Grand Prix pit lane, the need for hearing protection as well as safe communication are paramount,” Davies says. “We have been working with the majority of Formula 1 teams over the past three years, and we are really proud to be part of a world that demands the highest standards of engineering technology.”


The devices are made from a soft, medically-approved silicone, and they can also be made from a firmer acrylic material which can be plated in silver, gold, or titanium.


The production process begins with a technician making an impression of a client’s outer ear canal, and then pouring in liquid silicon. The resulting molds are then digitized for input into a 3D printer, and the company says it produces more than 4,000 ear pieces per week. Davies says 3D printing technology has advanced well beyond simply the ability to produce prototypes.


1889080_698346236867329_8772122851610298217_oThe company has produced more than one million 3D printed products at their Cardiff manufacturing center. Minerva was one of the first companies to embrace additive manufacturing as a commercial proposition, and Davies says they acquired their first 3D printer in 2004 “at a cost in excess of $150,000.” They also receivedMHRA approval for medical-grade resin they use to 3D manufacture the ear-pieces.


“Having been one of the first UK producers to take the plunge and switched over entirely to this form of additive manufacturing, we believe we have proven the case for 3D printing as a serious manufacturing process,” Davies says. “It has well and truly arrived as a cost-effective and efficient production technology that brings us many advantages, and has truly stepped out of its technological novelty phase of recent years. We will continue to invest in new and improved 3D systems ensuring our products stay at the leading edge of our field.”


Davies says 3D printing technology has also helped Minerva produce over 8,000 variations of color and materials, and he adds that in-ear monitors and ear plugs are now laser-printed with logos, names, or images according to a customer’s preference.


Additional InformationAs we see the advent of 3D printers we will see more and more products that are relatively expensive to produce in small quantities and to see one of the most technologically advanced sports using this shows that it will have a bright future, you can find the original source of the article here

Monday 25 May 2015

Icom Announces New Digital Land Mobile Radios at IWCE 2015

Icom America is showcasing new land mobile radio equipment at the 2015 International Wireless Communications Expo (IWCE). The company will be displaying new products promoting digital and IP radio technology. The IWCE conference will be held at Nevada’s Las Vegas Convention March 16-20. Icom will be exhibiting at Booth 621 during exhibit hall hours on March 18-19. Icom associates will also be participating on weekday panels highlighting P25, NXDNâ„¢, next-gen communications, and systems deployed in Latin America.


New products on display at Icom Booth 621 include the F1000D/F2000D the F3200DEX/F4200DEX, which belong to the Icom Digital Advanced System known as IDASâ„¢. The F1000D Series is a compact entry-level radio featuring enhanced emergency functions. The F3200DEX Series is a rugged handheld that meets Intrinsically Safe standards. For IP solutions, Icom’s VE-PG3 RoIP gateway and IP100H wireless LAN radio will also be on display.


Icom is also announcing the F5122DD Series transceiver. This data modem features MIL-STD construction and is ideal for field monitoring and remote system management. Additionally, the company is exhibiting its exclusive IC-7850 amateur radio as well as the ID-5100A and ID-51A PLUS D-STAR radios.


Sponsored by Penton Media, IWCE 2015 will host Icom and more than 7,000 dealers, distributors and end-users from various industries. IWCE’s conference program comprises five days of workshops, training courses and short courses. Keynotes, general sessions and networking events are also scheduled throughout the week.



Icom America Vice President Chris Lougee is participating in two IWCE events:


    • “Project 25 Foundations and System Technology Updates for 2015″ workshop on March 16
    • “An Update on P25 Compliance Assessment Program (CAP)” short course on March 19

“The P25 Compliance Assessment Program is critical in the equipment procurement process for government agencies,” says Lougee. “It is the best way to ensure interoperability.”


The following Icom America associates are participating as panelists for IWCE courses on March 18:


    • Mark Behrends (Senior Manager of Marketing) for “Next-Generation Push-to-Talk Roundtable: Cellular, Satellite, Wireless LAN and LTE”
    • Edwin Cortes (Technical Sales Manager, LatAm) for “Estudios de Caso: TETRA, LTE y P25″
    • Rodney Grim (Business Development Manager) and Chris Lougee for “A NXDN Deployment Review”

We are really interested in where Icom have going with their digital radios, the IP stuff is nothing new but Icom have a great history with Two Way Radios, you can find the original source of the article here - http://www.policeone.com/police-products/police-technology/press-releases/8413508-Icom-Announces-New-Digital-Land-Mobile-Radios-at-IWCE-2015/

Sunday 24 May 2015

How a Digital Walkie Talkie Works?

The Digital Walkie Talkie is the best way to communicate other than cellular phones on the world market. These devices are still widely used by the military personal, police officers, public event organizers, etc.


You might be quite interested how the digital Walkie Talkie Works? A walkie-talkie is a hand-held portable radio which communicates wirelessly using the radio wave signals on single and shared frequency bands.


Each of the battery-powered units of the device contains an antenna and transmitter/receiver for sending and receiving of the radio waves. It also contains a loudspeaker that doubles up as loud as a microphone when someone talks into it. There is also a “push-to-talk” or PTT button for this purpose.


The loudspeaker/microphone of the device works following the same mechanism as that of the intercom. The microphone and speaker contains almost the same components viz. a magnet, a wire coil, and a plastic or paper cone to pick up and generate the sounds.


You can also use any single device to do both jobs by switching electrical circuit and reversing the current flow. Walkie talkies manufactured by big companies include separate microphones and loudspeakers. Thus, it is based on a very simple mechanism.


How to use the Walkie talkie?


Groups of People who talk on the digital Walkie Talkie don’t need to tune into the same frequency band. Thus the Digital element of the Walkie Talkie. The radios of these walkie talkies are all receiving. Thus, the microphone/loudspeaker units work as a conventional radio.


If you want to talk with others via a walkie talkie, then you need to hold the push-to-talk button on the handset. After that, the radio becomes quiet as the loudspeaker switches over to the microphone.


As you talk into it, your words are converted into the radio waves and are then beamed out on a prearranged channel. Typical frequency of this channel is around 400 MHz. The radio waves are a part of the electromagnetic spectrum, they travel at the speed of sound.


The high-speed sound waves are very easily picked up by the other handsets. The radio waves are converted back into electric currents and are used by the loudspeakers to reproduce the sound of the voice of the person who is talking.



When the talking is finished, the talker says “over” and releases the “push-to-talk” button.


The radio now switches back into listening mode and someone else can talk. After this, the radio switches back into the listening mode.


The most distinct feature of the digital Walkie Talkie that makes it quite different from the normal radio is that it is a 2 way radio that is you can talk as well listen with the help of this device.


What are the benefits of using these devices?


The digital Walkie Talkie is a simple, robust and easy to use device for indoor as well outdoors. These devices are also very much suitable for the children as these are very light and easy to carry and handle.


The kids can keep in constant touch with their parents with the help of these devices. These are very much suitable for the business application purposes.


What are the major specifications?


A Digital Walkie Talkie is very convenient and weighs 100-200 grams and can work over a 5 to 10 square kilometer or 2-4 square miles. These electronic devices also have a very long battery-life of almost 20 hours.


The Walkie-talkies have multiple channels. So you can easily switch from one to the other easily. Some walkie talkies also have baby monitor intercoms.


What are the various parts of this device?


Variois parts of the digital Walkie Talkie include antenna, LCD displays, select buttons, monitor, menu buttons, loudspeaker, PTT button, volume control, on/off switch, microphone, LED indicators, etc.


The radio waves are sent and received by the antenna. The LCD display shows the channel number, battery life, etc., baby monitors are sometimes fitted within the device, the menu buttons are used to change the settings and functions of the device.


The LED indicate light glows showing that the channels are all busy.


The digital Walkie Talkie is offered at very reasonable and affordable prices by the best online shops. These are also very durable and flexible when in use. Therefore, it is a very useful telecommunication device for the people of all ages and backgrounds.

Friday 8 May 2015

How Does An Ear Defender Work In A Noisy Environment?

Are you working in a very noisy environment? Do you find yourself under very loud working conditions? Then, you definitely need the best Ear Defender in order to keep your hearing system unaffected by the surrounding noise.


People can get short of hearing and even deafness if they work in noisy work conditions for long and even short terms. Thus, using a hearing protection aid is a must for them. If you are a professional music player, you need to fit electronic devices like Apple iPod or MP3 style players with your ears. The noises from these headphones can damage your ears and your hearing power can be reduced.


Thus, you need to use the noise reducing headphones for these purposes. These types of devices are also known as the ear defenders, How Do Ear Defenders Work? This can be a first question in your mind.


How the Ear Defenders Work?


The noise reducing or noise cancelling headphone ear defenders work in two major ways. The first one is that these are usually designed to perfectly fit over the years with a thickly padded outer layer.


This layer acts as a physical barrier and blocks the high noise frequencies very effectively of the surrounding environment. These types of headphones are a bit bulky but these are highly effective ear defenders. These headphones are also commonly used in the noisy construction industries and perform very well.


This device leaves the low frequency noises and these get away through the physical barrier portion of the noise reducing headphone. There is a very small microphone inside the headphone that pocks up the unwanted noise or sound.


The highly advanced electronic circuits inside the headphones turn the sound wave into an opposite sound wave and play it back along with the music you are currently listening. The 2 sound waves of the external noise function to eliminate one another.


Because of these two technologies the passive high frequency barrier and the active lower frequency noise cancelling technology and the noise reducing headphones are the ideal for using in noisy environments of any type like offices, train plane journeys, etc. These devices cut off all the unwanted background noises which may disturb you.


Even if you want to listen to music peacefully you can only listen to the music by cutting of the unwanted surrounding noises with the help of the noise cutting headphones. These devices also work effectively while you are talking with someone on your mobile phone and the call is disrupted by unwanted surrounding noises.


How to protect your years?


The sounds are all turned into electrical signals that finally reach your brains. The tiny hairs of your cochlea pick up the sound vibrations. These hairs can get damaged if the sound vibrations are too high. The inner ear damages cannot be reversed.


Noise in the factories is one of the biggest sources of severe hearing losses. Thus, the workers in the factories, who have to work for long hours face serious hearing problems. They must use the most technically advanced ear defender for protection during the working hours.

Saturday 2 May 2015

UK SURGEON EXPERIMENTS WITH OCULUS RIFT TO MAKE ‘VIRTUAL SURGEON’

A British surgeon wants to make the operating room virtual with the Oculus Rift headset.


Dr. Shafi Ahmed, a laparoscopic and colorectal surgeon, has already worked to integrate Google Glass into his lessons as an associate dean at the Barthes of London Medical School.



As co-founder of the tech company Medical Realities, Ahmed now wants to use the virtual reality system Oculus Rift to create the “Virtual Surgeon,” a pilot program that would allow medical students to practice surgeries inspired by actual operations before setting foot into an operating room.


Ahmed and his team presented Virtual Surgeon at the wearable technology show this week.


“It’s very easy to train people in a correct operation,” Ahmed told ABC News on Friday. “It’s not so easy when things go wrong. … We’re all put in situations where things can go wrong.”


Last month, Ahmed took the first steps towards creating that program by making a 360-degree video of an operation.


Anyone wearing an Oculus Rift headset could then be able to get an immersive view of the laparoscopic procedure when the video is played back.


The virtual reality experience of Oculus Rift is a better simulation for students, Ahmed said, because it can more easily mimic a real operating room.


“It’s as close as you can get to replicating it,” he said, noting that education should always embrace the newest technology and a virtual reality operating room could be the next major tool for students.


The Oculus Rift headset has not been made available to consumers yet, but the company was acquired by Facebook for $2 billion last year. The headsets have already been utilized by a range of people, from real estate agents to driving instructors and fitness companies.


The oculus Rift has huge potential, this is a great one where it can save lives. Much like pilots, racing drivers and firefighters use simulators to improve training this is a good thing, the only issue will be the standard of the software used with the headset.


Original source - http://kticradio.com/abc_health/uk-surgeon-experiments-with-oculus-rift-to-make-virtual-surgeon-abcid35269105/