2013年8月2日星期五

concrete mixing equipment, electronic control system

Domestic electrical control system of concrete mixing station in various forms, mainly in the following three kinds of control mode based.
(1) Distributed computer control: this form of control in the early mixing station design widely used. Concrete mixing plants is the core of the programmable controller, only on a computer as a management report printing with the computer's functions and role is not obvious. With the extensive application of concrete products, precast concrete plant functional requirements and more complex, the application of this form of control is very difficult.
② centralized computer control: this form of control of the computer control and management functions focused on a single computer, the task is relatively heavy, and the production process of the statistical report data can not be carried out simultaneously, not readily statistics, measurement of interference by human factors too much. For example: measurement control procedures for the preparation, signal amplifiers and A / D boards accuracy will affect the measurement accuracy.
⑧ centralized computer control double: This form is resolved measurement of the man-made interference. Using a dedicated batching control instrumentation, and control the production and administrative functions into two computers, interfering, production control and reporting statistics simultaneously, and production management computer can also be used as a backup machine, provided with the previous one the computer's network interface.

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