According to the application, motherboards can be divided into two categories: industrial motherboards and commercial motherboards. Commercial motherboards are mainly used for home and office computers, and industrial motherboards are mainly used in industrial occasions, so the planning of industrial motherboards and commercial motherboards is quite different.
First, the application cycle is different
According to Moore's Law, commercial motherboards will be replaced after 2 to 3 years of use. The policy values pursued by commercial motherboard manufacturers are: fast speed, good graphics and game effects, and low price.
Compared with commercial computers, the application scenarios and uses of industrial computers are very different. In the field of industrial computer application, often each kind of equipment will have a fixed operation content and application, in the case of the use of certainty, the speed and graphics processing ability of the industrial computer can be determined, and does not need to be constantly updated. Compared with speed and price, customers in the industrial field pay more attention to long-term stable operation. The life cycle of industrial motherboards is generally 5 to 8 years.
Second, the selection of electronic components is different
The motherboard is the integrated circuit board, and the center of the integrated circuit board is various electronic components. The difference in the service cycle of industrial motherboard and commercial motherboard makes the selection of electronic components relatively different.
Commercial motherboards have lower requirements for product stability and operating environment than industrial motherboards, and the pursuit of timeliness of the product is that the materials used in the components of the product are all over the use of commercial-grade products. For example, capacitors, commercial motherboards are a large number of general electrolytic capacitors, one is for the use of commercial shopping mall products, and the other is to reduce the cost of the motherboard.
The components of the industrial motherboard need to be accustomed to a wide temperature environment (-40°C-80°C) to ensure normal operation in a chaotic environment (long-term uninterrupted start-up, oscillation, dust, radiation, etc.). In addition, industrial motherboard components also need to be resistant to high temperatures, moisture, and so on. In order to meet the application requirements, the industrial motherboard uses high-quality SMD electrolytic, tantalum and ceramic capacitors. This is one of the reasons why industrial motherboards are more expensive than commercial motherboards.
Third, the PCB is different
The commercial motherboard is a 4-layer PCB plan, and the general PCB circuit board is divided into four layers, the top and bottom two layers are the signal layer, and the two central layers are the ground layer and the power supply layer, and the ground and power layers are placed in the center. The industrial motherboard is planned with more than 6 layers of PCB circuit boards, which is planned to strengthen the motherboard's anti-electromagnetic interference, electromagnetic compatibility ability, and enhance the stability of the motherboard.
Fourth, the CPU is different
(1) Power consumption
Industrial motherboards generally use low-power CPUs, so as to get used to the harsh environment of industrial control occupations.
(2) Route planning
Because the industrial motherboard needs to be accustomed to the industrial application environment of wide temperature and wide voltage, the voltage scale of the industrial control motherboard is wider than that of the commercial motherboard, and the voltage scale of the industrial motherboard is generally between 9 and 36V. For the circuit layout and planning of the CPU, the requirements are becoming more and more precise.
(3) Anti-electromagnetic interference can be different
Commercial motherboards will only do commercial-grade electromagnetic compatibility testing, so that the anti-electromagnetic interference can be low. Industrial motherboards have high requirements for opposing electromagnetic interference, and need to pass EMI, EMC and other tests and certifications.
5. Production scheduling process and testing process
Industrial motherboards are often developed based on a certain application, and may only be used to a certain application, so its application is very limited, while commercial motherboards are facing the whole people, and one-time production can be very large. Because of the production volume, the cost of scheduling for industrial motherboards will be much higher than that of commercial motherboards. This is another aspect of the price difference between industrial motherboards and commercial motherboards.
Commercial motherboards mainly pass the three testing processes of ICT, FUNTION, and MANU. Before the production of industrial motherboards, it is necessary to strictly pass multiple test processes, general T5-T7, in addition to ICT, FUNTION, MANU, but also to do temperature, oscillation, safety and other tests to ensure the quality of each industrial motherboard.
6. Miscellaneous
1. The industrial motherboard supports more interfaces
It can support PCI, PCIe, mini PCIe, multi-COM port interface, multi-USB interface at the same time, embedded GPIO bus, dual display function, support HDMI, DVI, VGA, LPT interface, full-length card can cooperate with the backplane to support multiple ISA, PCI, PCIE expansion.
2. The industrial motherboard has the function of maintenance
Through special planning, the industrial motherboard can realize the functions of automatic restart of the watchdog and anti-surge impact in the event of abnormal conditions such as downtime, and make every effort to ensure the high stability of the system in harsh environments.
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