Solve the key needs of IoT software and hardware

HC things will certainly be hearing things nodes tens of billions of dollars, in many cases, will be relatively sensitive to costs related applications, it is necessary to consider the bill of material associated with each node. In addition, you need to consider the power consumption of each node, because a large number of IoT nodes will be placed in remote locations without power lines, which can only be powered by batteries, and it is important to maximize battery life.

There are indications that 2017 will be a year of significant development for the Internet of Things (IoT). The industrial research company IHS reports that the number of connected devices will increase by 15% to 20 billion by the end of this year. This will undoubtedly bring potential benefits to the economy, logistics and the environment, and is expected to be widely used in different fields. Relying on highly automated industrial processes will emerge to provide safer, more efficient and reliable systems, smarter, more energy-efficient living spaces, and less disruptive and more convenient patient care.

From the beginning, semiconductor manufacturers have made it clear how the Internet of Things should be implemented. There are certainly tens of billions of IoT nodes. In many cases, related applications will be relatively cost sensitive, so you must consider the bill of materials associated with each node. In addition, you need to consider the power consumption of each node, because a large number of IoT nodes will be placed in remote locations without power lines, which can only be powered by batteries. It is important to maximize battery life (engineers to the site) It will take extra time and cost to replace the battery). Depending on the application, other factors can also affect the operation of the IoT node, such as space constraints and harsh application environments.

Different wireless and wired communication protocols are used when deploying the Internet of Things. Some agreements are quite mature, while others are emerging. Wired protocols include KNX for industrial automation and Industrial Controller Area Network (CAN) or Ethernet. Most wireless communication protocols will focus on short-range, ultra-low-power operation such as Wi-Fi, ZigBee, Z-Wave, and Bluetooth Low Energy (BLE). The wireless protocol also has a low-power wide area network (LPWAN) protocol for applications with long distances and low data volumes, with very low power consumption (such as Sigfox and LoRa). Alternative to low-power protocols, as well as WAN-based, cellular-based protocols such as LTE-M, Narrowband Internet of Things (NB-IoT) and 5G.

The sensor/actuator is the component that actually drives the IoT work. All data can be captured and analyzed by sensors; instead, actuators can be used to drive motors, start lighting, and more. As can be seen from some application examples, the combination of sensors and actuators, coupled with the connection technology, is the core. In residential/building automation applications, multiple passive infrared (PIR) detectors in the network can determine the movement of a person, and the LED driver can initiate illumination of the corresponding room based on the movement of the person.

In industrial applications, such as large horticultural fields, many different sensors can monitor ambient light, temperature, humidity, soil moisture, and the like. When a parameter exceeds a predetermined threshold range, the corresponding action is taken. For example, when the temperature is too high, the motor can be activated to open the windows of the greenhouse. In addition, if the illumination is not optimal and the yield cannot be maximized, it can be adjusted via the linked LED driver.

Space, cost, and power budget constraints mean that IoT nodes need to follow a streamlined design philosophy with only features that are easily supported. When setting the parameter specifications for microprocessors and memory chips, the main considerations are low price, no power consumption, and no excessive PCB area. Therefore, a mandatory requirement is that you must be able to connect to cloud-based services and process and analyze data in the cloud to compensate for node inadequacies. The ability to use related applications in the cloud will make the IoT system design unrestricted at the node level, while the collected and valuable data can be fully utilized, enabling higher data processing and storage capabilities.

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So far, in the development of the Internet of Things, electronic hardware suppliers and cloud service providers are almost completely isolated. They are all stuck in areas they are good at, which has affected the Internet of Things to not grow fast, because having to consider hardware and software development alone is annoying. Hardware engineers don't want to leave their comfort zone to face the difficulty of writing a lot of code; similarly, software developers don't want to be limited to a development platform that doesn't give them enough flexibility.

The construction of the Internet of Things is based on various foundations. The node level is concerned with efficient and reliable operation, so that the data captured by the sensor can be returned after analysis/processing, or the actuator can be started when needed. To this end, the link technology used must be optimized for the specific task at hand. A further step is how to ensure that interaction with the cloud is effective.

What the Internet of Things has always needed is a technology that can solve all of these problems at the same time. From a hardware perspective, engineers are provided with the necessary link technologies, sensors, and actuators to create IoT nodes that meet specific application needs. From a software perspective, developers are provided with a foundation on which to build cloud applications that support this hardware.

Semiconductor companies are undoubtedly keen on the Internet of Things, but the development platform they provide cannot handle all the issues mentioned above. The hardware provided is a single PCB solution with specific sensors and communication functions. In order to make your system meet the application requirements, engineers have little room to play. When the platform does not support the best connection technology or sensing solution, only a compromise can be made.

In view of the ever-changing IoT deployment, engineers at ON Semiconductor have developed a new IoT development platform, the Internet of Things Development Kit (IDK), which takes into account the respective strengths of hardware engineers and software developers. To provide them with design convenience.

IDK is not a limited, versatile approach, it has a modular architecture, so there are more choices of sensors, actuators and bonding technologies. It provides engineering professionals with a highly versatile, off-the-shelf development resource that includes hardware and a sophisticated software framework for building "device-to-cloud" IoT applications.

IDK is based on the high-precision NCS36510 system single-chip (SoC) with a 32-bit ARM Cortex-M3 processor core and two sets of 320 KB of flash memory. There are a large number of daughter cards available that can be connected directly to the substrate. In terms of connectivity, engineers can pick the right daughter card for a variety of wireless and wired communication protocols such as Wi-Fi, ZigBee, Sigfox, CAN, Ethernet, and more.

For sensors, there are daughter cards that integrate temperature, moisture, motion, heart rate, ambient light, pressure, and biosensors. In addition, actuator functions can be achieved through stepper or brushless motor drives, as well as LED drivers.

Multi-seed cards provide different sensors, actuators and communication functions, allowing engineers to choose the right combination of solutions for the system design. In addition, hardware engineers who are not good at cloud software development need to use cloud-based services in their own IoT systems, which provides an easy way to get cloud services.

Instead, software developers don't have to curb their own ideas, they have the opportunity to develop their own proprietary services. IDK is supported by an Eclipse-based integrated development environment (IDE), including a C++ compiler, modifiers, and code editors, as well as a set of application-related libraries. With a configurable common platform, such as IDK, engineers can focus on the areas they are good at, without having to be forced to make trade-offs to achieve their system design goals.

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