The main layout of industrial panel PC:
1. All-steel chassis The all-steel chassis of IPC is designed according to the standard, which is anti-shock, anti-vibration, anti-electromagnetic interference, and can be equipped with a passive backplane compatible with PC-bus.
2. Passive backplane The slot of the passive backplane is composed of multiple slots of SA and PC bus. The number and position of ISA or PC slots must be selected according to requirements. The board is a four-layer layout with two layers in the center. Divided into the ground layer and the power layer, this layout method can reduce the mutual interference of the logic lights on the board and reduce the power supply impedance. The backplane can be inserted into seed boards, including CPU cards, performance cards, control cards, O cards, etc.
3. The industrial power supply is AT switching power supply, and the balance and unimpeded operation time reaches 250,000 hours.
4. CPU card There are many kinds of CPU cards in PC, which can be divided into long cards and half-length cards according to the size, and the processor can be divided into 386, 486, 586, Pl, PIII motherboards according to the size, users can choose according to their own needs. . Its main features are: working temperature 0-60 ℃: equipped with a "watchdog" timer: low power consumption, 5V25A when very large.
5. Other accessories Other accessories of the PC are basically compatible with the PC, mainly including CPU, memory, graphics card, hard disk, floppy drive, keyboard, mouse, CD-ROM, display and so on. Domestic manufacturers of industrial tablet PCs include EVOC, North China Industrial Control, Advantech, and Ailesi. The foreign industrial tablet PC Siemens is very well-known. The industrial tablet case is 19 inches in length and 4U in height.
6. Suitable for the platform At present, IPC has been widely used in all aspects of industry and people's life. For example: control the scene, road and bridge tolls, medical treatment, environmental protection, communication, intelligent traffic monitoring, voice, queuing machine, POS, CNC machine tools, fuel dispenser, finance, petrochemical exploration, field portable, environmental protection, military industry, electricity, railway, highway, Aerospace, subway, etc.
Features of industrial tablet PC: Generally speaking, industrial tablet PC is a computer specially designed for the industrial site, and the industrial site generally has a violent touch, and the industrial site generally has a violent touch, with a lot of dust, and a high Electromagnetic field force disturbance and other characteristics, and the general factory is working continuously, that is, there is generally no rest in a year. Therefore, the industrial tablet computer must have the following characteristics compared with the general computer: the chassis adopts the steel structure, and has high anti-magnetic, dust-proof and anti-strike capabilities. There is a special bottom plate in the chassis, and there are PC and ISA slots on the bottom plate. There is a special power supply in the chassis, and the power supply has strong anti-interference ability. Requires the ability to work continuously for a long time. Generally, a standard chassis that is easy to install is used (4U standard chassis is more common). Note: Except for the above features, other foundations are similar. In addition, because of the above professional characteristics, industrial tablet computers of the same grade are more expensive than the general ones, but generally not much different.
Compared with general-purpose computers, the main characteristics of industrial tablet computers are as follows: high reliability. Industrial tablet PCs are often used to control the continuous manufacturing process. During the operation period, no downtime inspection is allowed, and the occurrence of obstacles will cause quality problems and even manufacturing problems. Therefore, industrial tablet PCs are required to have high reliability, low failure rate and short after-sales time. Timeliness is good. The industrial tablet computer must timely control the changes of various parameters of the tool in order to control and monitor the manufacturing process in time. When errors or obstacles are found in the process parameters, an alarm and punishment can be issued in a timely manner. Usually industrial tablet PCs are equipped with real-time multi-task operating system and infix system. Situational compliance.
Due to the insidious environment of the industrial site, industrial tablet PCs are required to have strong environmental adaptability, such as high requirements for temperature/humidity changes: with the ability to prevent dust, corrosion, and shock from being touched: with good electromagnetic compatibility and high Anti-interference capability and high common mode suppression capability. Rich input and output templates. The industrial tablet computer is quite a set of process instruments, dealing with various lights, and requires rich multi-function input and output supporting templates, such as analog, digital, pulse and other input and output templates. The system has good extension and openness. The extended nature of the system is beneficial to the improvement of the automation level of the factory and the continuous expansion of the control range. Adopt an open system layout to facilitate system extension, software upgrade and exchange. Master software package is powerful, with convenient interpersonal interaction, rich screen, good timeliness and other functions: with system configuration and system production function: with timely and experienced trend record and actual function: with timely and experienced trend record and performance function : It has the functions of real-time alarm and accident recall; it has rich control algorithm. The system communication function is strong, and the industrial control system is generally required to be able to form a large-scale computer control system with remote communication function. In order to meet the timeliness requirements, the communication page speed of the industrial tablet computer should be high, and it is in line with foreign standard communication protocols. redundancy.
In places where reliability is high, industrial tablet computers require dual-machine work and redundant systems, including dual-control stations, dual-operation stations, dual-network communication, dual power supply systems, dual power supplies, etc., with dual-machine switching functions, Dual-machine monitoring software, etc., to ensure that the system will never interrupt work.
