Industrial computer is the industrial computer, which is the popular home computer or industrial computer, the English abbreviation IPC. Generally speaking, industrial computer is a computer specially designed for the industrial site. Since the establishment of Taiwan's industrial process control system in the 1960s, the world has undergone three generations of product development changes. With the development of computer technology and products, Nanjing IPC has also continued to develop and improve.
During the rapid development of urban rail transit in China, YONGS Technology has provided various solutions for the automatic ticketing system, power monitoring system, passenger information system, situation monitoring system, light signal system, fire alarm system and other systems of the rail industry. YONGS's strong and reliable performance in the long-term operation of the six major main lines, such as the acceleration of the speed of the six main lines, the Daqin heavy load, and the Qinghai-Tibet Railway, has won the recognition of a large number of professional users.
(1) Semiconductor technology integrated circuit technology promotes the development of microprocessors and microcontrollers, 1-bit, 4-bit, 8-bit, 16-bit, 32-bit microprocessors, microcontrollers and microcontrollers. The web chip has come out, and the analog controller and intelligent controller have been commercialized and implemented.
(2) The fourth-generation product of the distributed control system has been launched.
(3) The development of computer technology, communication technology, and control technology makes the control system develop to a new generation of fieldbus control system that is fully digital, fully decentralized, fully open, interoperable, and open to the Internet.
(4) PLC technology matured in the 1980s, and now there are new breakthroughs, whether it is processing speed, function enhancement, and communication capabilities have improved to a new level.
(5) The development of automatic control surface and technology, control, fuzzy control, artificial neural network, artificial intelligence technology and expert system have been practically used in industrial automation, industrial computer has been widely used in industrial manufacturing process control and refrigerator washing machine, etc. In the control of household appliances, the expert system has been used in power station control, metallurgical process and active control of stone makeup.
With the development of computer technology and application, the industrial computer continues to develop towards digitization, miniaturization, evacuation, personalization, and specialization, and the trend of industrial control computers will continue to expand, with broad prospects.
The so-called interlocking refers to the mutual restriction and interdependence among the switch, the approach and the light signal. The building that completes the interlocking is called the interlocking building.
Hierarchical diagram of interlocking system of two industrial computers
(1) layer is the human-machine dialogue layer
In the future, the operation input from the keyboard, mouse, etc. will be delivered to the interlocking computer through the serial port, and at the same time, the information of the station will be displayed on the graphic display. In the case of a large station area that makes the interlocking computer cumbersome or requires multi-terminal operation, the control command collector can be configured to identify the validity of the control command input and convert it into an agreed pattern to transmit to the interlocking computer.
(2) The second layer is the interlocking operation layer
The interlocking microcomputer is the core part of the system, which is involved in the identification of operation input, the treatment and analysis of the interlocking light signal, the logical operation, the control of command production, and the diagnosis of obstacles. The performance has a greater impact. Two interlocking microcomputers are configured in the system, one of which is a cold standby machine, which can be manually switched.
(3) The third layer of review driver layer
The review driver layer is burdened with collecting and revealing information and transforming the operation command issued by the interlocking microcomputer into an obstacle—the task of safely controlling the light signal, and the operation command generated by the interlocking microcomputer performs the screening function of review and inspection.
(4) The fourth layer is the connecting circuit layer
One of the tasks of the connection circuit is to complete the safety logic conversion between the information displayed by the on-site monitoring building and the driving light signal output by the PLC, so that both the input and output information of the PLC have an obstacle-safety function. The second task is to monitor the measurement and control process of the building with a dedicated circuit model, which includes the display information collection mechanism and the building driving process.
(5) The fifth layer is the monitoring tool layer. The monitoring building refers to the on-site building of the interlocking system, that is, the switch, the light signal machine and the track circuit.
3. Industrial computer system requirements
1. The requirements for stability and reliability are extremely high. Because the interlock is the instruction system for controlling the driving, it takes 10 years for the two machines to operate without any synchronism hindrance, and there should be no faults, and life is at stake.
2. Specification requirements: 2 CAN ports for communication, 8 485 ports for communication, 2 arcnet network cards, sound card, dual frequency performance, 1 network port
