By 2025, the Internet of Things (IoT) will have more than 100 billion connected devices worldwide, each with a dozen or more sensors collecting data with an estimated $19 trillion of newly created value.
These figures above aren’t just a wild guess, but from a leading research paper from Research and Markets. It’s expected that 5G connectivity and AI technology will power this transformation. This phenomenon is known as the Trillion Sensor Economy; sensors are expected to generate bronto-bytes (1000 trillion!) of data by 2025 from the trillion sensors that will be online by then, requiring the Internet to grow exponentially.
So, how important are sensors for the IoT?
IoT opens a world of opportunities to extend the digital into the physical world. New utilisations that focus on the control and monitoring of physical entities are appearing every day. IoT endpoints generate data about things that can be collected and analysed locally or remotely in the cloud.
These endpoints are increasing exponentially day to day due to the large number of sensors that we can use and the new ones appearing in almost a daily basis. Location, movement, proximity, temperature, images, vibration, ambient light, humidity, gestures, energy, contaminants and pollution are just some of the measurable endpoints. Therefore, the business case of the IoT sits on the ability to achieve device data streams for insight, process optimization and decision-making.
The trillion-sensor economy will benefit to the companies who’ve prepared for it.
A future with sensors giving information from surrounding surfaces, autonomous cars, wearables, workplaces and homes is not that far away and will change the way we live, the way we work and even the way our kids play.
For some, it can seem like a logical progression of modern society and even something easy
to accomplish. Nothing could be further from the truth however, behind this revolution there are basic manufacturing processes, hardware, software, data, and infrastructure needs that companies need to utilise in order to be well placed to take advantage of this opportunity.
Getting your company, products and services ready for the trillion-sensor economy requires a multidisciplinary view of all the teams and processes involved. A combination of intelligent devices, applications, connectivity, risk awareness (data privacy), milestones, management and leadership without a doubt requires a team that’s been there before and can help in bringing your idea to life.
Been there, done that
Here at Ovon we partner with our customers in championing the trillion-sensor economy revolution. Experts in end-to-end solutions, from the very early concept and prototyping to manufacturing. Through the process our projects get prepared to go to market not only with the best device but also with the data, security and cloud infrastructure to enable it. Passion for product design and progressive iteration are the key elements for us.
Healthcare, well-being, automotive and connected homes are just some of the industries about to be transformed. Many of the companies we work with have ambitious roadmaps to lead the race and we’re excited to help them capture this trillion-sensor economy. We are looking forward to helping our customers design a thriving future!
Everything started with a simple briefing, why heat and cool your whole home?
The Ovon team designed, developed and sold a cutting-edge smart radiator valve that allowed for room by room control. Today our CTO, Taimur Khan, brings us this blog to better understand why we chose Thread when developing the valves and how important is to have the right tools and knowledge when developing an IoT product.
So we start with the question, what is Thread?
Well it is something in the same category as Wi-Fi, Bluetooth, 3G, 4G etc. that are now house hold names and many people understand what they mean. Essentially, it is a wireless communication method, but it has been specially designed from the ground up to make secure and seamless communication between low power devices.
Many will ask why can’t we use Wi-Fi or Bluetooth. This is a very valid question especially because you can use Bluetooth between say your wireless headphone and your smart phone, or you can use Wi-Fi between you Laptop and your Printer although via a Wi-Fi router.
The problem is that Wi-Fi technology has been designed for a very different application. It’s main focus from day one was to exchange lots of data between devices that are commonly powered by mains. Thus, attempts to use Wi-Fi in battery powered applications have not worked very well and you end up either with a device that runs out of battery life every few weeks or you have to duty-cycle it’s power so much it becomes unusable as a responsive device.
Bluetooth, unlike, Wi-Fi had its beginnings in low powered devices like wireless mice and keyboards and then the latest Bluetooth Low Energy, aka, BLE has gone one step further to even lower powered devices like wearables example smart watches and health sensors etc. But Bluetooth has an inherent problem that some people may not be aware of. The problem is its low range and unavailability of meshing technology. To explain this further Bluetooth low power slave devices like save power by turning off the radio circuit when they do not expect to talk to the master device like a PC. This means that this is more of a one-sided communication and thus results in what we call a star network. A network in which slave devices talk to one master device only. This has a limitation on number of devices that can actively connect to a master.
The problem with Bluetooth was first (commercially) tackled by the likes of ZigBee and Z-Wave. Both technologies introduced meshing, but specifically ZigBee can theoretically have hundreds of devices in a network that talk to each other and pass each other’s messages around the network thus forming what we call a mesh network.
ZigBee and Z-wave technology can be seen in several home automation products that are on sale now a days. Products with these technologies generally can be found in smart lighting, smart locks, some security systems and also in some remote-control applications. The biggest market however for ZigBee has been smart energy and ZigBee has been used in millions of smart meters around the world.
Bluetooth SIG (Special Interest Group) has introduced Bluetooth Mesh technology, which is another competitor in this sector. Bluetooth mesh works differently from Thread and ZigBee in some respects. For example, for those familiar with routing protocols, BT Mesh uses network flooding to transmit packets. This means that a message sent goes to all devices. This is very useful in small home networks and is a special favourite of smart light industry, however this means that the packet latency becomes a problem with number of devices on a network and you cannot transfer large amount of data over this network without completely starving it of bandwidth.
So what is special about Thread, and why do we need Thread when we have ZigBee. The answer lies in the fact that ZigBee has been in development since early 2000s and it has failed to capture the home automation market. It has only risen to popularity in the last few years. ZigBee tried hard during its existence to become a one-for-all protocol. Unfortunately, year after year it failed to deliver intra-operability between manufacturers. So, for example if you bought a Zigbee switch from one manufacturer and a ZigBee light from another manufacturer, officially they should work seamlessly together but in reality, that rarely happened. Reasons was that the functionality of the gateway device had to be defined from start. A gateway must support a light switch already to be able to work for it. Thus, a universal gateway that supported all possible ZigBee devices didn’t exist.
Thread has gone back to basics and defined a protocol from scratch and based it on the internet protocols we use on the daily basis, on our computers, on our phone, on our tablets and even on our smart TVs.
The result is that Thread gateway is a much simpler device. It does not need to know what kind of Thread device is being connected to it beforehand and thus is much more universal. So much so that there is chance that soon Thread gateways may be built in to home Wi-Fi routers as standard.
Thread then continues to make device connectivity simpler and secure. The most common method to bring a Thread device onboard a gateway is by scanning its QR code via a Smartphone app. The Smartphone app acts as a security broker between the Thread gateway and the Thread joining device. All this happen using security technologies that we use on the web and have been tested and developed over many years. In a nut shell, Thread provides world class security of data between devices.
Thread still provides meshing so there can be up to 250 devices on a Thread network. A recent comparison between home automation protocols (ZigBee, Thread and BT Mesh) found Thread to be the best at routing packets and lowest latency of messages. You should not have to wait 5 seconds between pressing the switch and seeing the light turn on.
Thread also gets rid of single point of failure. For example, in ZigBee there is only one Gateway and if it fails then the network connectivity to internet fails. Also, you cannot commission new devices to the network without a working gateway. Thread supports multiple gateways and in a network with more than one gateway, if one fails, another one automatically takes over its responsibilities.
From a developer point of view Thread provides the simplest way to create wireless mesh networked devices.
As time goes on, we will see more and more thread related devices appear on the market. ZigBee alliance in cooperation with Thread have developed the DotDot application layer that brings many years of ZigBee learning to Thread. Although Thread is application layer agnostic, but I believe overtime we should see more and more Thread devices working together either though Cloud-to-Cloud integration or just talking to each other on a local Thread network.
Thread, believe it or not, is the future of home automation IoT devices. And with all the advantages it presents it may become the defacto for Industrial IoT as well.
Remember, we are always happy to share knowledge, so just get in touch!
**Disclaimer: The views and opinions expressed in this article are those of the authors and do not necessarily reflect the official policy or position of Ovon Technology Limited.