Embedded systems are undoubtedly one of the hottest and most promising IT application technologies. Its application field is increasingly close to the people, especially with the intelligentization of consumer appliances, embedded is more important. Such as mobile phones, PDAs, electronic dictionaries, video phones, VCD/DVD/MP3Player, digital cameras (DC), digital video cameras (DV), U-Disk, set-top boxes (SetTopBox), high-definition television (HDTV), game consoles, smart toys , switches, routers, CNC equipment or instruments, automotive electronics, home appliance control systems, medical instruments, aerospace equipment, etc. are typical embedded systems. With the development of embedded technology, industrial computer products based on embedded systems have become a major development trend in the industrial control industry in recent years. Miniaturization, low power consumption, no fan, wide temperature design, and adapt to harsh working environments. The advantage makes it quickly gain favor in the emerging market, and the original market situation of the traditional rack-mounted IPC 'unification of the world' is undergoing earth-shaking changes.
Compared with the traditional industrial computer, the embedded industrial computer is application-oriented, based on computer technology, and can be cut by software and hardware. It is suitable for application-specific computers with strict requirements on function, reliability, cost, size and power consumption. system. It is generally composed of embedded microprocessors, peripheral hardware devices, embedded operating systems, and user applications, and is used to implement functions such as control, monitoring, or management of other devices. The main advantages are:
(1) The product has good function adaptability, almost completely matches the function of the tested object, and has certain scalability but does not expand for the main purpose, so the product cost is high;
(2) The miniaturization of the device is one of the main manifestations. It is embodied in a compact design. There is no standard for structural design. The external interface and the installation space should be fully considered.
(3) High reliability requirements. On the basis of satisfying the reliability design of electrical functions, it is necessary to carefully consider the reliability design contents such as heat dissipation design, electromagnetic compatibility design, dustproof and waterproof design, and anti-vibration design;
(4) Ultra-low power fanless design is the mainstream. Due to the miniaturization of the device, the heat dissipation capability is limited, and the embedded system MTBF (mean time between failures) is also very high, especially in unattended applications, ultra-low power fanless design becomes a must.