Many people believe that the difference between CPUs on commercial motherboards and those on industrial control motherboards is not significant, leading some profit-driven vendors to use CPUs from commercial motherboards as CPUs for industrial control motherboards to earn more profit. However, since the emergence of embedded systems specifically designed for the industrial control field in 2009, the differences between commercial CPUs and industrial control CPUs have become increasingly apparent.
CPU power consumption and manufacturing process
Industrial control motherboards typically use low-power CPUs to withstand the harsh environments of industrial applications. Prior to the Atom N270 CPU, Intel did not have a dedicated embedded division, treating industrial control as a general CPU application. Since officially establishing its embedded division in 2009, Intel has formally separated commercial CPUs from industrial control CPUs, and has increasingly focused on the development of embedded industrial control applications, successively releasing low-power CPUs such as the Atom N230, N270, and N280 to differentiate them from commercial CPUs. Going forward, Intel will develop CPUs with even lower power consumption and manufacturing processes for industrial control applications, integrating some northbridge and southbridge functions onto the processor to meet the application requirements of the industrial control industry.
CPU circuit planning
Because industrial control motherboards are designed for wide-temperature and wide-voltage industrial applications, their voltage tolerance is wider than that of commercial motherboards, typically ranging from 9 to 20V. The circuit layout and design of the CPU also require greater precision.
Electromagnetic interference resistance
Unlike commercial motherboards, which are typically positioned in the market and used in a specific environment, commercial motherboards generally only undergo commercial-grade electromagnetic compatibility testing and have lower resistance to electromagnetic interference.
Industrial control motherboards, designed for the industrial market, have high requirements for electromagnetic interference resistance and need to pass EMI and EMC tests and certifications. This requires consideration from two aspects: first, the motherboard's circuit layout design; and second, the selection and structure of the chassis, power supply, and grounding.
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