The wide application of metering and batching equipment and the rapid development of fieldbus technology, with interoperability, interchangeability, replaceability, expandability and multiple support for industrial computers. In terms of the function of dosage, more algorithms are required to be realized, higher control objectives are achieved, and the dosage function is more integrated. The self-diagnostic function of the weighing control system requires perfect and accurate self-diagnostic function. In this case, the control of the automation level is higher and higher, from the classical PID regulation, feedback, feed-forward loop control gradually developed to the batch control, centralized control, object-oriented optimization control, artificial intelligence of the control of the control of the gradual development of multi-parameter multi-objective control, the correction, compensation, algorithms more and more to do a lot of detailed and accurate, and is particularly important. Dosing, and mixing object optimization control, adaptive control or artificial intelligence, through the computer centralized control system itself, no longer attached to other computer hardware. The use of IPC and network communication control system, the dosage equipment to support the requirements is not only how powerful and rich in content, but also for its different objects with the user redevelopment capabilities of the demand is becoming increasingly important. Batching equipment to support a variety of popular high-level language, the user according to the different requirements of each special control object can realize their own control strategy, will provide an important means of targeting the industry. Now organize the program of Batching system control:

(1) on-site intelligent weighing instruments are commonly used, a variety of communication technologies and PLC interoperability interchangeable control, on-site touch screen can automatically tare and other different weighing operations, such as touch-screen failure of the case of intelligent weighing instruments can replace the quantitative control, etc., to solve the need for mutual replacement function.

(2) digital DC speed control, inverter controller, soft start device, switching components in the reactor production process with the mixing quantitative weighing control, touch screen can be fine-tuned stirring inverter power, stirring motor rotates at a slight speed, the liquid material to get better mixing, will not be in the high-speed stirring under the destruction of the material's properties for low-speed inverter mixing and stirring of the dosage.

(3) Manual intervention is less and less, the operation point is more and more centralized, the operation mode is more and more software. Reaction vessel production batching site can be added while reading the real-time display of the weight, while the mixing power display is also in the same monitoring position, easy to read at any time different data to save time for manual intervention, the batching system for the man-made incorrect operation of self-correction, to solve the error in the process of mistakenly adding the wrong material.

(4) The function of the control system is more and more to the comprehensive development, the role of CRT is getting stronger and stronger. Control system and

Batching site in different offices can monitor the site batching conditions, improve staff efficiency.

(5) digital signals more and more in-depth site, the control will be further decentralized, this procedure is mainly reflected in the application of digital weighing instruments and digital Weighing modules, on-site weighing control accuracy will not be affected by the external mechanical structure, the digital integration technology is also in the touch-screen raw comprehensive application, avoiding the use of space on the site to simplify the complexity of the configuration of the equipment.

(6) Enterprise management information system (MIS), enterprise resource planning (ERP) and other information management technology has been successfully applied in some advanced enterprises, enterprise management information technology and production process control integration is also being rapidly developed, e-commerce is also changing the business, management mode of the enterprise to play its growing role.