RFID application scheme in industrial automation

chrispeng January 1, 2022 industry

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The design idea of PPB-MES manufacturing execution system builds an information network platform based on Pocket PC.

Difficulties in domestic implementation: low level of networking in the vertical direction

Since the existing system does not have the function of directly going to the site, or the site management function is very weak or completely manual, the human factor is very large, so the specific problems of each business can only be managed and controlled by human means, and there are many loopholes. Rough management.

The amount of repetitive work in information processing is large. Because the existing system, the underlying interconnection is weak or the computer has not been used for information processing, it is impossible to talk about the problem of realizing data sharing on the basis of complete data management. The basic information of the same thing or person must be manually re-judged and input in different departments, which makes the overall work efficiency inefficient and unnecessarily increases a lot of repetitive work. There is no scientific data planning, the data is irregular, and the collection of non-uniform data is done separately based on different systems, and the maintenance of the data is also carried out separately, so that the data that has no relationship with each other can not be regular and unified.

Each computer software system is operated separately, there is no correlation, no dependence, and no logical relationship between each other, and it is even impossible to achieve data unification. The real-time information is poor. Many companies implement MRPII/ERP to strengthen management. However, the upper-level production plan management is increasingly affected by the market, and it is obvious that the plan cannot keep up with the changes. Faced with customers’ demanding requirements for delivery time, more product modifications, and continuous adjustment of orders, corporate decision makers realize that the formulation of plans depends on the market and the actual execution status of operations, and cannot be completely based on materials. And inventory returns to control production.

At the same time, MRPⅡ/ERP software is mainly for resource planning. These systems can usually handle things that happened before yesterday (for historical analysis), and can also predict and process the events that will happen tomorrow, but they often leave behind the events that are happening today. The irregular gap. The lower level of the information system is low in completeness. The price of the production control system software provided by foreign suppliers is too high, and domestic enterprises generally value the purchase of equipment hardware and despise the purchase of software. This affects the integrity of the informatization of the intermediate links of the system, thereby reducing the efficiency of the entire production system. According to a survey by a foreign company, the utilization rate of domestic CNC machine tools is only 25% due to the lack of development or application of various application software.

Strict control and low density Because business processes cannot be fully controlled by computer, blind spots in control are generated. Traditional production site management is just a black box operation, which can no longer meet today’s complex and changeable competition needs. Therefore, how to make this black box operation transparent, find out any problems that affect product quality and cost, improve the real-time and flexibility of the plan, and at the same time improve the operating efficiency of the production line has become a concern of every enterprise.

1. The introduction of the Pocket PC platform fills the gap in the vertical integration of information (this article uses MC5000)