A group of university students and lecturers are on a road trip of a different kind as they travel over 4 000km to test out their solar powered car – the Ilanga II fuelled only by the sun, writes JENNI EVANS.
Solar panels? Check. Ion batteries? Check. 3D printer for spares? Check. A group of university students and lecturers are on a road trip of a different kind as they travel over 4 000km to test out their solar powered car the Ilanga II fuelled on nothing by good old sunshine.
“It can do up to 140km/h,” says Nickey Janse van Rensburg, who lectures mechanical engineering at the University of Johannesburg’s Energy Movement lab.
“Because we don’t have a lot of sun today we are doing 90km/h,” she said from the convoy snaking toward the Northern Cape town of Kimberley to show off the vehicle named after the Zulu word for sun.
And every time they stop, they draw a crowd of people keen to see what can be done by a group of bright sparks looking for clean green alternatives.
Resembling a cross between a space pod and a yacht, the aerodynamic lines of the orange and white Ilanga II draws delighted crowds wherever she pulls up. And that is exactly what the university wants – for people in the towns and rural villages along the route to see how green technology can be used in every day life.
Says Janse van Rensburg, the Ilanga II could even be plugged into a wall like a cellphone, if needed, to charge.
The Solar Car Project promotes the study and development of efficient energy use, environmental awareness, energy management and innovative engineering.
On Thursday the residents of Klerksdorp who arrived with their children at the team’s leg-stretching and system-tweaking stop at the Mitsubishi garage were intrigued by what they saw. Her “engine” is 300 lithium ion batteries which work almost like cellphone batteries, and almost 1 000 business card-sized thin solar panels.
Along the route, even mayors have come out to welcome the team which is happy to explain how everything works and tell people about other ways of using “green” technology in their every day life.
And of course, everyone wants to see some laps and they are not disappointed. And then it’s go time again.
Warren Hurter, engineering project manager at the university’s manufacturing research centre, is one of the three drivers taking turns on the test run.
He explains that the solar panels on top of the vehicle convert the energy from the sun into power in the battery packs.
The solar panels are similar to the solar cards that powered the Mars Rover which wheeled around the red planet looking for signs of water activity, its solar panel “wings” capturing enough energy during the four-hour Mars day to enable it to explore, and communicate with the team on Earth.
The Ilanga II’s tool box is a 3D printer which will be used to replace parts it might need for running repairs. The 3D printer has already produced the steering interface, the buttons, the battery holder and the brackets for the roof panel.
“We haven’t needed to use it as yet,” said Hurter.
They have had a small suspension problem so far, and when they started their journey in Johannesburg the telemetry system which measures the car’s performance was playing up.
“But that’s all part of the experience,” says Hurter who says he was the kid who played with Lego and pulled things apart to spend hours figuring out how to put it all back together again.
Camping along the way they have a support team which stays up until late making adjustments to the vehicle.
The Ilanga II is their third solar-powered car after the Ilanga and the Ilanga 1. Their team hopes to take her to next year’s Sasol Solar Car Challenge where the Ilanga 1.1 scooped the Technology and Innovation Award previously. Local and international solar car developers compete in that race between Pretoria and Cape Town as part of their work on improving the technology and to share ideas.
The race to find energy efficient alternatives has already given rise to the electric hybrids already on the consumer market.
Because the Ilanga II is built around efficiency, it only takes one driver. The team scanned the shape of one of the drivers, placed it into the vehicle and built it around his shape. So only drivers with his shape will fit into her.
The department partnered with UJ’s Prof Vivian Alberts at PTiP Innovations, who developed and internationally patented the thin film photovoltaic technology used on the car. These are very thin solar panels which they hope to pilot in rural communities in the near future, according to the university’s website.
Hurter says the car does not have any luxuries apart from indicators and headlights. The only radio is the two-way radio the team uses to communicate. It is a bit noisy on the inside because it does not have the sound padding that cars usually have, but from the outside, it is very quiet, and has no emissions.
The project has sponsorship from companies such as Eskom and Siemens, and a support convoy provided by Mitsubishi which also wants the crew to log their vehicles’ fuel efficiency for its own studies.
And when will be able drive one? Not in the near future. The Ilanga II Solar Car Project is not being built for sale, but for now is being used to research and develop sustainable and green engineering that can be used in the real world.
They already have plans to introduce the technology to power village pumps.
Spectators can look forward to seeing Ilanga II at pit stops and lectures along its route which will include a trip through Namibia and Botswana.
Her itinerary is: Friday, June 19: Kimberley – Upington (Public Lecture)
Saturday, June 20: (Upington) – Hakskeen Pan – Rietfontein Border Control – KeetmansHoop
Sunday, June 21: Keetmanshoop – Mariental – Rehoboth
Monday, June 22: Rehoboth – Windhoek (Public Lecture)
Tuesday, June 23: Windhoek– Swakopmund – Walvis Bay
Wednesday, June 24: Walvis Bay – Swakopmund
Thursday, June 25: Swakopmund – Windhoek – Buitepos
Friday, June 26: Buitepos – Kang
Saturday, June 27: Kang – Sekoma – Kanye – Gaborone
Sunday, June 28: Gaborone Day (Public Lecture)
Monday, June 29: Gaborone – UJ Solar Lab.
Like UJ Solar Car on Facebook or follow them @UJSolarCar on Twitter.
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.