Position: In this paper, weighing controller on China's development trend.
Trend 1, to increase scientific and technological research into weighing controller.
Weight control in the field of metrology is now widely used in a number of new technologies.
Such as: the establishment of mathematical model of control system theory, fuzzy theory, artificial intelligence, neural networks, digital filtering, vibration theory, the damping technology, self-diagnosis and self-adaptive technology
For example, Jinshan Hospital of China, Hefei developed SK-PLC weighing control instrument. Instrument to use in the quantitative control system of coal, has abandoned the original thinking of a simple PID Control. The controller uses a large number of digital filtering, artificial intelligence, and adaptive self-diagnosis, number of feed-forward regulation in the field of automation and control new technologies. Practice has proved that after the scene, very good.
Trend 2, the development of independent intellectual property rights, weighing controller, taking its own development.
① weighing display to the modular and intelligent development. The use of reliable and integrated PLC chip (module) as a control instrument hardware.
② control of the key ideas, control strategies, technical standards, etc. (software, equipment manufacturers raised production. The use of OEM (Integrated Manufacturing) technology and professional cooperation weighing instrument manufacturers. In the production technology and process weighing and so display a new breakthrough. can learn from the experience of foreign counterparts. Some companies often do not produce their own weight control instruments, but simply to provide program design, software. and concrete weighing display manufacturing (hardware), will be paying and professional weighing display manufacturers to create. professionals would develop its own strengths.
Trend of 3, a unified controller product standards
Recommendations in accordance with national standard GB7721-1995, as well as internationally accepted Recommendation No. OIML76 formulated on the basis of weighing display controller of the national or industry standards. Weight display controllers and abroad compared to a single function, the lack of bus function is the biggest drawback. With the DCS system in the extensive use of new cement factory, the direct use of the bus connected with the DCS, and the exchange of data and information constitute a simplified system, which is an inevitable trend. Abroad has been the introduction of a new generation of weighing the display function (Bus, Ethernet). In China, there are as yet no such weighing control instrument (usually to RS232, 422,485 given the way). This is what we must strive to the direction of the future.