1.2 Industrial PC
As PC-based controllers prove to be as good as PLCS and are accepted by operations and maintenance personnel, one manufacturer after another is adopting PC control solutions for at least some of their production.
Based on
The PC control system is easy to install and use, has advanced diagnostic functions, provides more flexible options for system integrators, and in the long run, PC control system maintenance costs are low.
Because PLC is controlled by PC the biggest threat, so PLC suppliers feel very uneasy about the application of PC.
In fact, they are now part of the PC control “wave.”
In recent years, the industrial PC has obtained unusually fast development in our country. From a worldwide point of view, industrial PC mainly contains two types :IPC and their deformation machine, such as AT96 bus industrial computer. Due to the basic automation and process automation of industrial PC running stability, hot swap and redundancy configuration requirements are very high, the existing IPC has been unable to fully meet the requirements, will gradually withdraw from the field, will be replaced by other industrial computer, and IPC will occupy the management automation layer. In 2001, the state set up a major industrial automation project “Industrialization of Open Control System based on Industrial Control Computer”
target
Is to develop PC-based control system with independent intellectual property rights, in 3-5 years, occupy 30%(50% of the domestic market, and achieve industrialization.
A few years ago, when ‘soft PLC’ appeared, the industry thought industrial PC will replace PLC. However, today, industrial PC did not replace PLC, there are two main reasons: one is the reason of system integration; Another reason is WindowsNT, the software operating system. A successful PC-based control system should have two points: first, all the work should be done by software on a platform; The second is to provide customers with everything they need. It can be predicted that industrial PC and PLC competition will be mainly in high-end applications, its data complex and high equipment integration. Industrial PC can not compete with low – priced micro PLC, which is also the fastest growing part of the PLC market. From the development trend, the future of the control system is likely to exist between industrial PC and PLC, these signs of integration have appeared.
2 Industrial control industry instrument development
Industrial control instrument focuses on the development of main control system device based on fieldbus technology and intelligent instrument, special and special automatic instrument; Expand the service field comprehensively, promote the digitalization, intellectualization and networking of instrument and meter system, complete the transformation of automatic instrument from analog technology to digital technology, and the proportion of digital instrument will reach more than 60% within 5 years; Promote the commercialization of automation software with proprietary copyright.
2.1 Electrical instruments and meters
Electrical instruments and meters focus on the development of long-life electricity meters, electronic meters, special electric meters and grid metering automatic management system. In 2005, medium and low grade electrical instruments domestic market share to reach 95%; By 2010, the domestic market share of high and mid-range electrical instruments reached 80%.