Take 100 engineers, 600 prototypes, 100 patents pending and half a billion rand in motor technology, and you get a hair dryer from the future, writes TIANA CLINE.
A heater, a motor and pushing out some airflow – making a hair dryer sounds quite simple. Yet, most of today’s technology innovation in this space seems to revolve around LCD displays and Nano ionizers. And then James Dyson put forward a challenge: How quiet could Dyson’s team of engineers make a hair dryer?
About 1600 kilometres of hair testing later, the Dyson Supersonic has hit South African shores (and tresses).
“Hair dryers haven’t changed much since the 1960s,” laughs Brett Coulton, Dyson’s Design Manager in New Product Innovation. “We were initially looking to create a super silent hair dryer, that’s how it all started. But we also wanted to make it the most powerful that we could.”
James Dyson has invested hundreds of millions of pounds in digital motors. Dyson has been making digital motors for the better part of 20 years. But it’s not about micro-scaling the architecture; the goal is to help the motors team define what they’re trying to get out of a product.
The V9 is Dyson’s smallest digital motor to date, specifically built for the Supersonic. Every millimetre counts.
“When we started, the motor was 40ml in diameter and now we’re down to 28.6ml. The whole purpose was to push for the motor to get into the handle. All the light weight components are at the top. The motor is both smaller and lighter than conventional hair dryer motors, which are top-heavy- which also makes the hair dryer heavier on the arm. We were constantly trying to push for the diameter to be reduced, which is why, now, our motor is the size it is. It all fits into the Supersonic’s handle, which feels comfortable in most hands.”
The V9 spins at 110 000 revolutions a minute, generating high pressure air. That’s five times faster than a Formula One engine (and yes, we’re still talking about a hair dryer here). It’s also six times faster than a conventional hair dryer, at one inaudible frequency, yet is a third of the weight.
“The good thing about high pressure air is that you can squeeze it into really small spaces,” says Coulton. “It’s an incredibly dense and compact design and the high-pressure motor allows us to push air into an annulus, based on our air multiplier technology. The extra pressure on one end allows the motor to be smaller in the handle.”
The flow has been designed to be as concentrated and laminar or consistent as possible – it comes out at a 20-degree angle. Inside the Supersonic’s head, you’ll find a heater and thermistor. The thermistor – essentially a tiny glass bead – is connected to a microprocessor. The two, through wires which run down the handle, measure exit temperature 20 times every second, and report it straight to the microprocessor.
“No matter how you restrict the flow, the Supersonic manages to keep a constant temperature. We know from testing that, if you exceed 150 degrees, you start getting irreversible damage to hair. With thermistor technology, that’s never going to happen.”
Most hair dryers don’t offer this level of control. But then again, the creation of Dyson’s Supersonic took 100 engineers, 600 prototypes, 100 patents pending (16 on the attachments themselves) and half a billion rand in motor technology.
“Four years ago, Supersonic was double-handled. We found that the digital motor was spinning so fast that, if you had a silencer at either end, you could keep it very quiet. That said, it wasn’t nice to use and it didn’t look great,” recalls Coulton.
“We started from scratch and some of the things we did to make it quiet was changing the motor. We could give the same level of performance using 11 blades, but we added two extra blades, which takes the frequency that the motor produces to an inaudible range of the human ear.”
Unsurprisingly, Dyson has a semi anechoic chamber – an echo-less, sound proof area – at their lab. They set the product up in the middle to test the hair dryer and pick points in the design which are noisier. The Supersonic has 25 bits of foam strategically placed inside the handle.
“Every little bit counts! A rubber mount takes away any form of vibration or noise from the motor. Tiny little rubber pips mean there is minimal contact with the motor and casing.”
The Dyson Supersonic is the result of a $65 million investment in the science of hair: during the development, Dyson engineers studied hair from root to tip, understanding how it reacts to stresses, how to keep it healthy and how to style it.
“We’ve got laboratories that just deal with how we look at hair, we’ve got electron microscopes, tensile testing machines.. it’s been a real learning curve, but a good one.”
* Tiana Cline is a freelance content writer, technology journalist and digital strategist. She likes cats, data science, long-form and violent video games.
Time is running out for Microsoft SQL Server 2008
Companies are urged to update from the dated database management software as it reaches the end of its support, writes BRYAN TURNER.
The 11-year-old Microsoft SQL Server 2008 database management software is reaching the end of its support on 9 July. The applications that use databases running on this software will be at risk of security and stability issues.
On self-managed databases, upgrading to the latest database version comes with a lot of risks. Many IT departments within companies go by the motto: “If it’s not broken, don’t fix it”.
Microsoft made it very clear that it would not be updating SQL Server 2005 after its extended support date and even left it vulnerable to Spectre and Meltdown by not releasing patches for the dated version.
Updating SQL Server versions may seem daunting, but the benefits far outweigh the effort it takes for a migration. In the last major version update, SQL Server 2016 introduced simpler backup functionality, database stretching, and always-encrypted communications with the database, to name just three features.
While backing up the database may be the last thing on the typical database administrator’s mind, it’s become increasingly important to do so. In SQL Server 2008, it’s clunky and causes headaches for many admins. However, in SQL Server 2016, one can easily set up an automated backup to Azure storage and let it run on smart backup intervals. Backing up offsite also reduces the need for disaster recovery for onsite damage.
Database stretching allows admins to push less frequently accessed data to an Azure database, automatically decided by SQL Server 2016. This reduces the admin of manually looking through what must be kept and what must be shipped off or deleted. It also reduces the size of the database, which also increases the performance of the applications that access it. The best part of this functionality is it automatically retrieves the less accessed records from Azure when users request it, without the need for manual intervention.
Always-encrypted communications are becoming more and more relevant to many companies, especially those operating in European regions after the introduction of GDPR. Encryption keys were previously managed by the admin, but now encryption is always handled by the client. Furthermore, the keys to encrypt and decrypt data are stored outside of SQL Server altogether. This means data stored in the database is always encrypted, and no longer for the eyes of a curious database manager.
The built-in reporting tools have also vastly improved with the addition of new reporting metrics and a modern look. It includes support for Excel reports for keeping documentation and Power BI for automated, drag-and-drop personalised reporting. Best of all, it removes the dreaded Active X controls, which made the reporting in a webpage feel very clumsy and bloated in previous versions.
A lot has changed in the past ten years in the world of SQL Server database management, and it’s not worth running into problems before Microsoft ends support for SQL Server 2005.
Local apps to feature in Huawei’s App Gallery
Huawei’s mobile app store, the HUAWEI AppGallery, will soon feature a multitude of apps and designs by local developers. The company says this is part of its drive to promote South African digital talent and include more useful apps for Huawei smartphone users. HUAWEI AppGallery and HUAWEI Themes are pre-installed on all the latest Huawei and Honor devices.
“South African consumers are increasingly wanting more apps that are relevant to their unique circumstances, addressing issues they experience regularly – such as load shedding or safety concerns – but also apps that celebrate South Africa’s multitude of cultures and this vibrant country,” says Lu Geng, director of Huawei Consumer Cloud Service Southern Africa Region.
Akhram Mohamed, chief technology officer of Huawei Consumer Business Group South Africa, says: “Huawei is committed to catering to the needs of South African consumers, but we also know that we do not have all the answers. For this reason, we aim to work closely with South African developers so that we can give our users everything that they need and want from their devices. At the same time, we also hope to create an open ecosystem for local developers by offering a simple and secure environment for them to upload content.”
Huawei Mobile Services was launched in South Africa in June last year. Since then, both the HUAWEI AppGallery and HUAWEI Themes – which features tens of thousands of themes, fonts and wallpapers that personalise user’s handset – have become increasingly popular with the local market. Even though it is a relatively new division of Huawei, there has been a great increase in growth; at the end of 2018 Huawei Mobile Services had 500 million users globally, representing a 117% increase on the previous year.
Explaining what differentiates the HUAWEI AppGallery from other app stores, Mosa Matshediso Hlobelo, business developer for Consumer Cloud Service Southern Africa says: “We use the name ‘HUAWEI AppGallery’ because we have a dedicated team that curates all the apps in terms of relevance and ease of use and to ensure that there are no technical issues. Importantly, all apps are also security-checked for malware and privacy leaks before being uploaded on to the HUAWEI AppGallery.”
Huawei recently held a Developers’ Day where Huawei executives met with South African developers to discuss Huawei’s offering. 48 developers registered their apps on the day, and Huawei is currently in discussions with them with the eventual aim of featuring the best apps and designs on HUAWEI AppGallery or HUAWEI Themes. The Consumer Cloud Service Southern Africa Team at Huawei plans on making Developers’ Day a quarterly event and establishing a local providers’ hub, where developers can regularly meet with Huawei for training on updates to programmes and offerings.
“We have a very hands-on approach with our developers, and hope to expand that community so we can become an additional distribution channel for more developers and expose them to both a local and a global audience,” says Geng. “For example, we regularly feature apps and designs from local developers on our Huawei social media pages, and do competitions and promotions. We want to do everything we can to make our Huawei users aware of these local apps and upload them. This will encourage the growth of the developer community in South Africa by giving developers more opportunities to generate revenue from in-app purchases.”
* Developers who would like their apps featured on the HUAWEI App Gallery, or designs featured on HUAWEI Themes, should visit https://developer.huawei.com or email Huawei Mobile Services on firstname.lastname@example.org.