Wireless sensor technology is the most important new technology that has emerged in the field of process measurement for decades. For this reason, ARC Advisory Group and other industry analysts are already paying attention to this technology. Although wireless measurement has proven to be less successful in industrial applications than most organizations expect, wireless segmentation is growing much faster than the entire automation market.
For many years, Dust Networks has been a leader in industrial wireless sensor network technology. Today, as standardization increases, WSN vendors can use the same product line to meet both industrial and IPv6 market needs.
Looking back at the changes in the wireless sensor network (WSN) market over the past year, the ARC Advisory Group is most impressed by the fact that the industry is more mature and has achieved many significant technical achievements. We believe that the improvement of industry maturity and the emergence of the latest technological achievements will promote market growth, because extremely wide customers can get good service. In 2011, WSN leader Dust Networks took a series of changes, and these changes are excellent examples of how the industry's evolution has changed (and will continue to change) the wireless sensor market.
Commercial maturityThe maturity of the WSN industry is achieved through a series of ongoing mergers and acquisitions. Currently, almost all sensor network innovation companies have been acquired by large companies. Most of the companies that have acquired the acquisition are reputable semiconductor suppliers. Almost all fabless WSN companies have been snapped up. Dust Networks is one of the latest acquired companies, and in late 2011, analog integrated circuit specialist Linear Technology acquired Dust Networks.
If a Fortune 1000 company wants to meet customer expectations, it must carefully control the technology used. Customers of large global companies expect to receive product support for many years to come, and the technology offered by fabless semiconductor companies at the start-up stage means huge supply chain risks. Nowadays, through company mergers and acquisitions, WSN suppliers will no longer bring huge supply chain risks to global giants such as Emerson, General Electric, Honeywell and Siemens.
Over the years, Dust Networks' main design goal has been low energy consumption and reliable end-to-end transmission, which is why it has been a leader in the industrial WSN market.
For Dust Networks, it was acquired by Linear Technology to become a member of a global chip company with annual revenues of $1.5 billion and to take advantage of Linear Technology's proven testing and commercialization processes. Linear Technology uses a rigorous internal process to differentiate to ensure high quality. About 40% of Linear Technology's business is related to industrial customers, so Linear Technology is familiar with the needs of such customers. Similarly, Dust Networks has been focusing on industrial WSN applications since its inception. By interacting with industrial customers, Dust Networks has established a product concept of “low power and reliable transmissionâ€. For many years, “Low Power and Reliable Transmission†has been guiding Dust Networks' design decisions, and the ability to follow this philosophy well is why Dust Networks leads the industry in WSN applications.
The latest version of Dust Networks has adopted the Linear Technology process. In short, Dust Networks accepted the acquisition not only to increase product sales through a broader distribution channel. Rather, by creating Dust Networks' internal development and commercialization processes, you can create even greater value.
Technological developmentIn the past year, WSN has also made great progress in technology. The most important development was the completion of the e-version of the IEEE 802.15.4 standard. Although the IEEE 802.15.4 standard has been published for many years, the most commercially available WSN applications have been using non-standard media access control (MAC) rules to optimize network performance. WirelessHART, ISA100.11a, ZigBee, and IPv6 sensor networks all feature a custom MAC layer for low power and reliable end-to-end information transfer. This makes the IEEE standard not fully realize its value, because the application needs its own dedicated MAC.
IEEE 802.15.4e made important changes to the defined MAC layer. It creates a standard and fully defines the MAC that can support different types of networks. This includes the 6LowPAN compressed IPv6 network. In addition, it supports synchronous TDMA network properties used in industrial low-power applications (for example: WirelessHART and ISA100.11a). Finally, 15.4e can accommodate extensions, so these different types of networks (and future networks) can scale standard MACs without violating the standards themselves. This separates WSN development from the IEEE standard development process that lasts for three to four years. It will give the IEEE standard a higher value and a much longer lifespan, enabling greater interoperability between the WSN chip and the network stack, and enabling future WSN technologies to leverage an existing and fully standard MAC. .
Dust Networks and IEEE 802.15.4eThe technology developed and supported by Dust Networks at the beginning of its development has now evolved to the latest SmartMesh WH and SmartMesh IP products, which have been adopted by Dust Networks products, and the latest version of IEEE 802.15.4e is adopted. A lot of Dust Networks technology. However, this latest standard not only uses technology from Dust Networks, but many large manufacturers have also made extensive and positive contributions to the standard, most notably Siemens.
Dust Networks uses the latest chip design (IEEE 802.15.4e compliant) in WirelessHART and IPv6 products. Using these latest chipsets is very beneficial for WirelessHART (industrial) customers, as Dust Networks' power consumption is reduced by approximately 50% for each new generation of chipsets. In battery-powered industrial equipment, this low-power chipset helps create an "energy surplus," enabling devices to have longer lifetimes and/or applications that were previously unavailable due to excessive battery power consumption.
Dust Networks is able to meet both WirelessHART and IPv6 application needs with a single chip design, enabling the company to grow simultaneously in both markets. IPv6 applications can use a wider variety of system architectures. In particular, such applications can deliver data packets from on-site sensors to truly location-independent analysis and applications, including cloud-based applications. The impact of the cloud on the wireless sensor market remains to be seen, but the combination of high scalability and low cost of cloud services may lead to new applications that are not feasible with traditional WSN gateways.
Now that the degree of standardization has increased, what is the difference in Dust Networks products? The company will continue to do its utmost to maintain market leadership with low energy consumption. Low energy consumption extends the life of industrial applications, which is very valuable not only for industrial OEMs but also for customers of these manufacturers.
Dust Networks has extensive experience to optimize its network manager. In most WSN applications, the network manager is extremely active and is a mission-critical component. Active network management enables sensor networks to deliver highly reliable end-to-end services with low power consumption. This makes it possible to achieve reliable end-to-end services and low power consumption only when the network manager makes continuous decisions to dynamically configure the network to enable reliable operation of the network through point-to-point links, since such links are inherently unreliable.
Another area of ​​concern may be energy harvesting. Although energy harvesting represents a constant technical challenge, it is a very active development direction at Linear Technology. Any new energy harvesting solution will benefit first, will be low-power products.
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