At present, everyone is talking about the Industrial Internet of Things (IIoT) and the associated requirements for the wireless connectivity of industrial sensors. For the industry, the concept of equipping sensors for objects such as machines, pumps, assembly lines and rail vehicles is not new. Sensors and networks designed for specific applications have proliferated in industrial environments, from refineries to production lines.
Historically, these networks have encountered a high threshold in terms of network reliability and security, and are completely unable to cope with consumer technologies. In particular, the way these sensors are networked determines whether sensors can be deployed in a safe, robust, and cost-effective manner in harsh environments unique to industrial applications.
Because its work involves industrial-grade reliable and secure wireless sensor networks, Linear Technology's Dust Networks product group pioneered several key technologies that are now part of the major wireless networking standards, including WirelessHART (IEC62591) and new emerging 6TISCH IETF standard. These wireless networking standards are specifically tailored to meet the needs of industrial applications and are summarized below.
The first thing to consider is reliability and security. Unlike consumer applications, cost is often the most important system attribute in consumer applications, and industrial applications generally rank reliability and security at the top of the list. In OnWorld's global survey of industrial wireless sensor network (WSN) users, reliability and security were cited by respondents as the two most important issues. This is not surprising if you consider the profitability, quality and efficiency of a company's production of goods, and the safety of workers often depends on these networks. Reliability and safety are essential for industrial wireless sensor networks, and that's why.
Industrial IoT is not installed by wireless technology experts. In most cases, established industries will gradually add industrial IoT products and services beyond their traditional products, while their customers will deploy in environments where new and legacy devices are mixed. The intelligence embodied in industrial WSNs must provide an ease of use for industrial IoT products, making the transition process seamless for existing field workers. Moreover, the system should be available for global deployment, as end-users' widespread adoption of industrial IoT is often global and requires multi-site standardization.
The sensor can be placed anywhere. For industrial IoT applications, the precise placement of sensors or control points is critical. Wireless technology is expected to enable wireless communication, but if you need to plug in the power to power the wireless node, or recharge it every few hours or even months, the cost of deployment and unrealistic methods become It is daunting.
The visibility of network operations is key. Industrial networks are required to run continuously for many years, but no matter how strong the network is, there will still be problems. The quality of a network that works well during installation can be affected by many environmental factors during its working life. The IIoT network should have self-diagnosis, self-healing, and the ability to alert users and operators when problems occur.
In business-critical industrial applications, wireless sensor networks must reach a high threshold for intelligent, secure, and years of reliable wireless operation. These rigorous requirements can be met with existing and emerging grid network standards that will be key components designed to help industrial customers transform their business and services in the industrial IoT era.
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