Fanless industrial computers are compact computers that are specially planned for industrial sites. It can be sensitively used in applications that require low-power consumption systems such as automotive, medical, surveillance, factory control, and vision systems in demanding environments such as temperature and space. The difference with the traditional industrial computer is mainly in the structure and function.
Structural differences
The traditional industrial computer uses a combination of 4U and other types of cold-rolled plate chassis + gold finger motherboard (full-length or half-length card) + base plate + high-power power supply.
There are some unstable factors in such a structure:
1. If the CPU card is inserted into the baseboard, there will be poor contact, such as vibration, loosening of the transportation process, oxidation of gold fingers, etc., which will lead to failure to boot.
2. Connect some ATX signal cables between the backboard and the CPU card.
3. The CPU card is powered by the backplane, and when the backplane presents a problem, it will affect the CPU card and fail to supply power normally, resulting in the instability of the system (such as the unreasonable planning of the baseboard power supply circuit); The CPU is an external interpolation (PGA package) method, and there is a danger in the connection, and the fan is required to dissipate heat, and the connection and service life of the fan and the CPU are the maximum safety hazards.
4. The power consumption of the power supply is too large, and the power supply needs the fan to dissipate heat, which will cause damage to the power supply and the motherboard when the fan is faulty.
5. The structure of CPU card + base plate will bring trouble to the installation (at the time of flow consumption, the CPU card must be installed on the base plate), which will affect the operation efficiency and is not conducive to a large number of installation operations.
The structure of the fanless industrial computer is a combination of all-aluminum shell + embedded motherboard + external low-power power supply.
Forte:
1. The shell of all-aluminum structure makes the heat dissipation more abundant, small in size and light in weight. It is easy to carry with the device.
2. The advanced embedded, low-power CPU motherboard and the latest embedded technology are selected, and the related peripheral interfaces are integrated on the CPU motherboard, which reduces the connection problem and avoids the related loosening problem.
3. The embedded CPU motherboard adopts a single +5V or +12V DC power supply method, and is equipped with an AC adapter to make the on-site power supply method more abundant and the power supply more reliable.
4. Because the CPU of the embedded motherboard chooses the BGA (onboard) packaging method, there is no need to worry about the connection problem, and the fan-free planning is selected, which greatly improves the reliability and completely solves the problem of insufficient heat dissipation and life of the traditional industrial computer.
5. When the customer's device is used, it only needs to use the external socket to connect the hard disk and memory, which shortens the installation time and improves the operation efficiency.
Summary: There are a large number of connection wires between the CPU card and the backplane or external interface of the traditional industrial computer, which leads to the problem of loose or wrong connection of the system, and brings the instability of the whole system (just like there is an electric fan in the system). The embedded industrial computer adopts advanced technology, which fundamentally solves the problems that cannot be handled by traditional industrial computers, making the system more stable and the structure more refined.
Functionally different
Traditional industrial computers are driven by CPU cards, and the relevant interface cards on the passive backplane.
Present at Risk:
1. The signal trace between the CPU card and the related peripheral card is long, and there is signal attenuation and disturbance. (The impact of the profession on high-precision signal acquisition is even greater).
2. Because the peripheral card is inserted into the passive backplane, it is sometimes unable to drive more peripheral cards due to the influence of the motherboard's driving ability (for example, sometimes the third PC device on the passive bottom cannot be operated).
3. Because there is a bridge chip on the bottom plate, there is a problem of capacitance.
4. Traditional industrial computers do not have reserved interfaces for more advanced peripherals (such as: AGP slot, the requirements for higher display functions cannot be completed, which brings inconvenience to customers or pays a higher cost to choose PCI graphics cards, or the functions cannot be completed).
Forte:
1. There are many expansion slots, providing traditional ISA and PCI expansion.
2. Traditional ISA and PCI equipment are cheap.
The fanless industrial computer uses an embedded motherboard, and PC104 or PCI104 and other expansion methods are selected.
Forte:
1. The embedded motherboard generally chooses PC104 (equivalent to IAS), PCI104 (equivalent to PCI), MIN PCI and other expansion methods, the signal line is shorter, the signal attenuation and disturbance are smaller, and the plugging is more solid and reliable.
2. PCI and ISA bridge chips are integrated on the motherboard, and the system driver and supervision can be stronger.
3. The embedded motherboard integrates DIO, TV-OUT, Audio, single and double network ports, multi-serial ports, multi-USB ports and other trunk interfaces, providing customers with more generous interfaces, making customer expansion simpler and cheaper.
4. The LCD interface is a major feature of the embedded motherboard, which can directly connect the user to the LCD screen, which reduces the trouble of A/D conversion and reduces the safety danger compared with the traditional VGA form.
5. It can not only standardize the operation system, but also provide embedded operation system: Windos CE, LINX, Windos XPE, etc., so that the system is more concise, faster to start, and more stable, and to avoid problems such as system damage caused by accidental shutdown.
Shortcoming:
1. The scalability is relatively weak, and the traditional ISA interface is not provided.
2. The price of expansion equipment such as PC104 is higher.
Summary: Traditional industrial computers will bring inconvenience to the actual system application because of the driving ability and monitoring problems of the motherboard, and will bring the increase in procurement costs to customers because of the lack of mainstream interfaces. Because the embedded motherboard has a richer interface and a more dry interface, it provides customers with a lot of choice space and reduces costs.
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