There are many reasons for disk problems, which are roughly divided into the quality problems of the disk itself and the problems caused by the operating environment.
As long as we choose to buy a hard disk with better quality and brand when we start to do the control system, we can also use Scandisk and Norton Disk
Doctor and other software detect disk surface defects. Assuming we can predict the quality and health of the hard drive, this will give us the opportunity to pick the drive and back up important data. The author found a software called Drive Health on the Internet, which can detect the service life of the hard drive and help everyone know the health of the hard drive in advance.
The common problems caused by the working environment are as follows:
1. The working time of the industrial computer is long. Because of the demand for normal production, the industrial control system of some factories needs to work for a long time, which brings huge testing to the industrial computer operation system. According to Microsoft's Operating Hours report, Microsoft claims that it has Windows
The post-2000 operation system can support long-term operation, but from the actual operation, after more than a week of operation, the disk will accumulate a lot of data fragments in the process of huge data exchange, which simply forms disk logic bad sectors, read and write errors, and slows down the operation and operation of the system. Therefore, the IPC can be restarted and disk defragmentation at regular intervals to reduce disk errors caused by long-term operation. The restart time can be determined by the amount of data processed by the industrial computer and the production status, it is not hard, and readers need to explore slowly. From the author's actual experience, a standard month (30 days) to restart and organize the IPC can reduce the probability of disk errors.
2. The internal temperature of the industrial computer is too high. In an environment that requires high-temperature operation for a long time, computer components are prone to aging and the frequency of hard disk failures is also higher. This requires the factory's automation system maintenance personnel to pay close attention to the temperature of the chassis in the daily inspection, and try to keep the temperature of the industrial computer between 10 and 30 degrees Celsius, too high and too low temperature are not suitable for the protection of the hard disk, if the chassis temperature reaches 30 degrees Celsius, the temperature of the internal hard disk will reach 40 degrees or higher. We can simply DIR our own industrial computer to achieve the effect of lowering the ambient temperature. 1. Replace the high-power CPU and hard disk fan (the hard disk fan should be fixed and should not be installed on the hard disk firmware rack to prevent the hard disk from causing a sensation due to the rotation of the fan) to accelerate heat dissipation; 2. Install a fan inside the chassis to exhaust air to the outside of the chassis to add air convection; 3. Install a small axial fan on the cabinet where the industrial computer is placed; 4. Install air conditioning in the control room to reduce the temperature of the space.
3. The ambient humidity is not suitable. Industrial computers are mainly composed of integrated circuits of many electronic components, and their insulation properties are closely related to environmental humidity. If the humidity is too high, the circuit board will be short-circuited and incinerated by simply forming a short circuit; If the humidity is too low, static electricity will simply occur, and some electronic components will be broken down. Therefore, too much humidity and too little humidity will bring potential threats to the industrial computer. The problem of electrostatic protection requires that we need to have a good instrument grounding on the industrial computer. It is worth clarifying that the grounding electrode of the industrial computer is different from the lightning protection grounding on the civil engineering, the grounding electrode site should be three meters away from the control room, and the ∮20 galvanized angle steel is used as the pen directly at 1700mm under the outdoor floor, and the number of grounding meets the grounding resistance less than 1 ohm (the shake table test should be applied when backfilling), and then 40 * 40 * 40 * 4 galvanized flat steel and the grounding body are firmly welded (each welding point should be carefully treated with anti-rust), and the 25mm copper cable is transferred to the building to the system ground terminal and the industrial computer grounding point. This can be useful in reducing the damage caused by static electricity.
4. The ground tremor is greatly felt. In the production of many factories, the physical displacement actions such as dragging and sensation of the motor are not only brought by huge noise, but also the sensation brought by the operation of the machine will bring huge damage to the disk, optical drive and floppy drive of the industrial computer. The process of producing disks is getting higher and higher, and the current speed has reached 7200 revolutions per second or even higher. In many data exchanges in the automatic control system, the disk that runs for a long time and at high speed is simply caused by the disk sensation, resulting in the decline of disk read and write ability, slow head positioning, and even disk damage; Therefore, it reduces the environmental vibration of the industrial computer, which is conducive to the protection of the disk. When we are in the process of engineering design, we can keep the industrial computer away from the operation site with a large seismic source as much as possible; If the operation location cannot be changed, we can also put sponges and bufferable objects under the industrial control cabinet and box to reduce the damage caused by the sensation.
5. There is a lot of inhalable particulate matter in the air. Most of the materials in many factories require powder for processing, coupled with large external air activity and a lot of sand and dust, a lot of sticky dust is simply accumulated in the industrial computer, resulting in excessive local temperature in the industrial computer, which brings damage.
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