First, introduction
The Fourth Industrial Revolution (or Industrial 4.0) is coming to us - the possibility of the Internet, cloud computing, data analysis, and industrial Internet access (IIOT) infrastructure. Although the previous industrial technology makes the monitoring and control of various systems such as factories, power plants, refinery, natural gas pipelines, rail transportation, etc., and industrial Internet of Things will promote the further development of automation technology by adopting industrial wireless sensor networks (WSN).
WSN technology and wireless communication solutions used in industrial 4.0
The data in the control system is fused to the data acquired by the Internet of Things nodes, providing a more comprehensive data set, allowing users to optimize their entire value chain. For example, understanding the operational state of factory-critical equipment helps predicting the problem possible time / location, which avoids and reducing the risk of downtime, saving a large amount of funding for the company annually. This can also reduce the frequency of maintenance work to reduce operational costs.
It is estimated that by 2023, there will be 340 million wireless sensor network chipses (higher than 1 billion units in 2018) every year. Short-range wireless communication methods (such as 802.15.4, Bluetooth, Wi-Fi and proprietary protocols) currently account for more than 90% of all shipments, but low-cost distance communication methods (SIGFOX, LORA and NB-IOT) are being Growth at a faster speed. It is expected that the annual income of the related fields (industrial, agriculture and construction) of wireless sensor network equipment will exceed $ 13 billion.
Second, IIOT neural network
In general, the control system usually pays more attention to its security and reliability, rather than system costs, which help ensure smooth and efficient operation of manufacturing or processing places, because any errors, delays or accidents will lead to income loss or even personal Casualties. With wireless communication, energy efficiency, miniaturization, and intelligent embedded computing technology, and more robust, low-power design, long-lived button batteries, these have led to the development of reliable and safe wireless sensor nodes. These nodes can meet stringent industry requirements and work in the most extreme application settings.
Since the cost of wireless sensor network technology is low, it is relatively easy to deploy hundreds of or even thousands of sensor nodes throughout the system, which is also quite economically, thereby forming a class of people's Internet of Things systems. This scalability, plus the ability to support a variety of wireless network protocols, further improve the reliability of the ecosystem, including sensor nodes, repeater, and gateways, all of which implement industrial 4.0 necessary. Space and channel redundancy.
Third, the wireless protocol of industrial network network
In addition to harsh or remote operating environment and industrial facilities, engineers should also take into account all metal, concrete and equipment, and electromagnetic interference from internal and surrounding other electronic devices. All of this determines the type of industrial network node to be implemented, or which combined wireless protocol should be supported, depending on the specific application. Bluetooth low energy consumption (BLE), ISA-100.11A, wireless HART and ZigBee are valid options.
The 2.4GHz transceiver module of Microchip has a very low receiving current, which can extend battery life. The IEEE 802.1.1 module has an easy-to-use API driver interface that can be connected to the company's free TCP / IP protocol stack and its mainstream PIC microcontroller unit (MCU). These low-power embedded Wi-Fi modules eliminate the complexity and cost of developing RF circuits from zero and obtaining a proxy certificate. RN1810 models include a plate-on TCP / IP network stack, password accelerator, power management subsystem, real-time clock, 2.4GHz transceiver, and RF power amplifier.
Figure 2 Microchip MRF24WB0MA / MRF24WB0MB wireless module
Panasonic's PAN9026 module combines IEEE 802.11a / b / g / n to combine with Bluetooth BDR / EDR / Le function to provide flexible connection options for intelligent energy, home gateways, and Internet of Things. It has a dynamic fast channel switching (DRCS) function, can work at the same time at 2.4 GHz and 5GHz. These two independently running standards reach the data rate to 150Mbps, plus 400mA (transmission) and 70mA (received) ultra low current. By integrated power management, high-speed dual-core processor (CPU), 802.11i security standard support and high-speed data interface, it provides the speed and reliability required for Internet access deployment.
Be
Figure 3 PANASONIC PAN9026 Wi-Fi and Bluetooth? Radio module
Fourth, intelligent wireless sensor network solution
The Silicon Labs EM35X series consists of a fully integrated chip system (SOC), which has a transceiver, 32-bit ARM Cortex-M3 microprocessor, flash memory and RAM, and many pairs of 32-bit ARM Cortex-M3 microprocessors, flash memory and RAM, and many pairs ZigBee system designer valuable peripherals. Transceiver components use an effective architecture that exceeds the dynamic range requirements specified by IEEE 802.15.4-2003. Integrated receiving channel filtration allows other communication standards in the 2.4 GHz spectrum (such as IEEE 802.11-2007 and Bluetooth) to coexist.
ADI's Smart Mesh IP wireless solution consists of an embedded chip and a pre-certified PCB module. These modules are equipped with completely developed smart wireless network software. The Smart Mesh wireless sensor provides powerful data reliability by ultra-low power, secure wireless communication ("99.999%). The sensor can be placed in any IIOT environment. The core of Smart Mesh and its related network management boards is Eterna IEEE 802.15.4e So, which uses highly integrated low-power 2.4GHz radio design while also has a ARM Cortex-M3 32-bit microprocessor running Smart Mesh network software. .
Figure 4 ADI. Smart Mesh IP Wireless Solution
The wireless sensor network hardware required to support industrial 4.0 technology is being realized. Now, you can find components and modules to achieve the required performance on the market, while you can also deal with power budget restrictions, challenging operating conditions and a series of different security threats. Therefore, in the next few years, many benefits that automate the improvement will begin to be implemented worldwide.
Be
Be
Reprinted from -Wiku Electronic Market Network
Our other product:
