With the rapid development of industry and computers, computers are also applied to all aspects of automated control systems today, with increasing automation. The safety of industrial control computers is also particularly important. The technical principle of the industrial computer is the same as that of the ordinary computer, and the composition is similar. Only the industrial computer emphasizes the stability of its work. The industrial computer generally works in a relatively harsh environment. The requirements for ambient temperature, humidity, supply and voltage, stability, and ventilation performance are relatively high, but the working environment often fails to meet the requirements. The industrial computer is also prone to failure. If there is a problem with the hardware, it can be replaced in time. Once the disk is damaged, a large amount of recorded data will be lost, the control software will be destroyed, and it will not be repaired in a short time, resulting in unstable control of the controlled parameters, which often brings huge economic losses.
Description of the fault phenomenon:
After the industrial computer is running for a long time, (long time refers to: including a standard working period of 30 days/24 hours working system and above), a large amount of dust accumulates in the chassis, and the temperature of the chassis is high. Normally, everything works normally without shutting down. Once the power supply is insufficient or emergency shutdown is required, the control system is prone to failures such as the disk failing to start, the system failing to load, and the login screen for a long time.
Fault analysis and troubleshooting:
There are many reasons for disk failures. Here we are roughly divided into the quality problems of the disk itself and the problems caused by the working environment.
The quality of the disk itself, we can not go deep into the research, only when starting to control the system, choose to buy quality, brand better hard disk, you can also use Scandisk, Norton Disk Doctor and other software for disk surface defect detection. If we can predict the quality and health of the hard drive, this will give us time to choose the hard drive and backup important data.
The faults caused by the working environment are common in the following aspects:
1. The industrial computer has a long working time. Due to the needs of normal production, the industrial control system of some factories needs to work for a long time, which brings great test to the industrial computer operating system.
2. The internal temperature of the industrial computer is too high. In an environment where long-term high-temperature operation is required, the components of the computer are prone to aging and the frequency of hard disk failure is also increased.
3. The environmental humidity is not suitable. The industrial computer is mainly composed of an integrated circuit of many electronic components, and its insulation performance has a great relationship with the environmental humidity. If the humidity is too large, it will easily cause the circuit board to be short-circuited and burned; if the humidity is too small, it will easily generate static electricity and will also break down some electronic components.
4. The ground has a large earthquake. In many factories, the motor needs to generate physical displacement actions such as drag and vibration, which not only brings huge noise, but also the vibration brought by the machine work will bring huge damage to the industrial computer disk, optical drive and floppy drive.
5. There are many respirable particles in the air. Most of the raw materials of many factories require powder processing, and the external air flow is large and the dust is much. The industrial control machine is easy to accumulate a large amount of sticky dust, which causes the local temperature in the industrial computer to be too high, resulting in hardware damage. This situation occurs mostly around the cooling fan such as the CPU, power supply, hard disk, and graphics card.
6. The power supply voltage fluctuates greatly and is easy to power off. With the rapid development of industry and life, the demand for electricity is also increasing. In many areas, there are insufficient power supply, unstable voltage, and easy power outages. The voltage is unstable and the power is suddenly turned off, causing the system to restart frequently. The system file is also easy to be lost and cannot be started normally. The head that is performing the read/write action sometimes causes the head of the computer to fail due to the power failure. Therefore, the stability of the power supply of the industrial computer working environment is related to whether the industrial computer works normally or not. We can use the regulated power supply and the UPS uninterruptible power supply for protection. The specific equipment selection depends on the load power and the number of working hours.
The harm caused by the failure of the industrial computer disk is self-evident. To ensure its safety is a problem that our industrial control personnel should pay attention to. Only when we do detailed protection measures in advance, the industrial computer can run stably and efficiently. The author uses the above methods in the actual work, effectively avoiding the disk failure of the industrial computer, and can shorten the repair time of the fault from the original several hours to several minutes, providing protection for normal production.
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Label: Analysis and troubleshooting of industrial computer disk failure
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