IoT, Internetofthings, is an extended and expanded network based on the Internet, which combines various information sensing devices with the Internet and forms a huge network to realize the interconnection of people, machines and things at any time and any place. So, what are the ways of IOT connection? The following is a detailed introduction of six common IoT connection methods.
What are the IoT connection methods?
Ethernet is a fast and reliable way to connect things to the Internet. Commonly used in industrial and building automation, Ethernet is widely used in systems that contain many nodes in the same network. Because Ethernet is hardwired, it is also inherently a very secure method of connectivity. Power over Ethernet (PoE) can also be used to power devices over Ethernet cables, thus eliminating the need for separate power modules.
However, hardwiring does pose significant design challenges and does not make sense for every application. The nodes connected via Ethernet must be close to the router. Even in short-range applications such as home and building automation, Ethernet cables are so large that managing and hiding the wires remains a major challenge.
In modern buildings, automated lighting systems need to be hardwired during construction, but installing an Ethernet IoT system in a building not designed for it is often not feasible.
2,Wireless Internet Access
As a necessary tool for Internet connectivity, the wireless nature of WiFi is very appealing. It is widely supported by mainstream devices and does not include the hard-wired constraints of Ethernet. Wi-Fi is the most popular Internet connectivity option for consumer electronics, bringing the benefits of high speed and wireless connectivity.
Despite its popularity, adding Wi-Fi capabilities to embedded designs is often complex. Wi-Fi is appealing because it is wireless and fast, but these features come at the cost of security vulnerabilities and power consumption. As a result, Wi-Fi-based IoT designs require engineers to carefully balance security, power consumption, and cost.
Fortunately, solutions exist today to help engineers overcome these obstacles. Using a Wi-Fi module optimized for IoT will simplify your design and save development time. Modules such as the WINC1500 are fully certified, support security protocols, and are optimized for battery-powered devices, enabling Wi-Fi connectivity without sacrificing cost and power consumption.
3, Low Power Wide Area Network (LPWAN)
are less common in consumer products, so you may not be familiar with them. However, a large portion of IoT applications are in wide-area applications, such as environmental monitoring.
The benefit of using WANs for environmental monitoring is that we can monitor rural, offshore and normally inaccessible areas. But the problem is that these locations are in rural, offshore areas that are usually inaccessible. As a result, we can’t quickly charge devices floating in the Mariana Trench or connect to Wi-Fi in the Mojave Desert.
Agriculture is a perfect application for LPWAN because these networks can cover large areas with very little power.
Typical LPWAN usage range seems to hover around 10 km. Data is transmitted very slowly, but unless your IoT solution is checking email and streaming video, you probably don’t need a high-speed connection.
While LPWANs are commonly used in agriculture and remote applications, they are not unique. Urban usage is growing, and one of the largest LPWAN commercial IoT deployments in North America is used to track vehicles in auction yards.
There are two common LPWAN protocols: LoRaWAN (from LongRange or LoRa) and Sigfox. the difference between the two is cost. sigfox is a subscription-based service that operates similarly to cellular networks. If Sigfox is available in your area, you can connect to a local provider by subscription. With LoRaWAN, developers can avoid subscription fees by creating a “do-it-yourself” network, but most people still choose to use their local network provider’s LoRa gateway infrastructure and pay per-use fees.
Cellular networks cover the entire world, except for extremely remote and isolated areas. For embedded systems that require this range, cellular is the only option. However, it is expensive. You must use a provider, and you can’t build your own network without government regulatory approval. The cost of embedded components and provider subscriptions per node typically outweighs the benefits of the cellular network’s extensive coverage.
That said, it’s important to distinguish between the cellular network used to connect things and the monthly bill you pay for your phone. IoT-specific cellular networks are emerging to compete with LPWAN.
The growing IoT cellular network is LTECAT-M. M stands for “machine” and is a low-speed, low-cost, low-power option optimized for the IoT. Other options for cellular IoT connectivity are CAT-0, CAT-1 and the newer NB-IoT (“narrowband” for NB).
As 5G is introduced, we can expect it to drive innovation in the IoT. 5G’s higher speeds could enable greater advances in cutting-edge IoT applications such as self-driving cars, albeit at a higher price point than IoT-oriented networks. 5G coverage is less widespread than LTE or 3G, but it is expanding. Some industry analysts predict that 5G will reach 20 percent of the global population in the next five years.
Cell coverage may cover most of the densely populated world, but what if you want to connect things in scattered desolate areas again?
Satellite connectivity is used for IoT applications, such as transportation logistics in remote areas of the planet not covered by cellular services. While changes are expected to occur as satellite technology evolves, developing satellite IoT applications is not as easy as other connectivity options.
About Bluetooth, many of you may already be familiar with it. Both Bluetooth Classic and Bluetooth Low Energy (BLE) have a maximum range of over 100 meters, but are typically used for devices that are no more than a few meters apart. In everyday life, we see Bluetooth in cell phones and PC accessories – headset, keyboard and display technology. Bluetooth is ideal for consumer electronics because it has low power consumption (very low power consumption for BLE), wide support and can be paired quickly.
Unlike Wi-Fi, Bluetooth does not connect directly to the Internet. you will need to set up a gateway to connect to the Internet. while setting up your own gateway may seem daunting, it is usually as easy as connecting to a mobile device that is also connected to Wi-Fi.
Bluetooth 5.0 is a recent update that extends the range of Bluetooth so it can be used in home area networks. While BluetoothClassic and BluetoothLE are commonly used to connect devices that are only a few meters apart, you can connect your entire home to Bluetooth 5.0. The extended range brings Bluetooth into home automation, lighting and industrial applications.
The Internet of Things is an important part of the next generation of information technology! That’s why it’s essential to understand what IoT connectivity options are available. I hope the above introduction of six common IoT connection methods can give you some reference. More information, more content, as presented in Ozmca, welcome to register comments!