The designing of the controlling and monitoring program for
concrete mixing stations which based on PLC
ABSTRACT
With the rapid development of China's economic construction, the basis for many
large engineering and construction projects have been started. Construction of high
quality project needs high-quality concrete, and with the strengthening of environmental
consciousness, in order to reduce urban noise and pollution, traffic and construction
management department for the construction of concrete used in concentration of
production and management. This requires not only the ingredients of concrete, high
precision, and require the production speed, therefore, the production process of
concrete mixing equipment automatic control system has attracted attention.
Programmable controller with high reliability, functional, simple and intuitive program
can effectively make up for the relay control system defects. For these reasons, I
designed the product based automatic control system of concrete mixing equipment.
Common control of concrete mixing station has direct control of relays, PLC and
computer and PLC integration and combination of ingredients controller 3 control.
Batching Controller using PLC and the control of mixing with reliable, cost-effective,
can guarantee the quality of concrete to improve concrete production efficiency. As the
core of concrete mixing station, control and monitoring procedures in the measurement
of precise, reliable control, easy management, and other requirements are increasing.
In this paper, combined with PLC control and ingredients mixing station controller to
design the control and monitoring process design of the main tasks to be accomplished
in a systematic structure, PLC's I / O allocation, work flow and procedures for the
preparation of PLC.
KEY WORDS: Concrete mixing station; The I / O distribut- ion;Programmable logic
controller(PLC); Automatic control
