Abstract
With the development of science and technology, great changes have taken
place in our life.An intelligent, automation has began to appear
in front of us, which provides great convenience for
us. A typical representative of the automatic door is in the
process ofautomation, this design is the use of knowledge, combined
with the actual needs of the.
In order to enhance the reliability of the automatic door
system, presents a S7-200 programmable controller (PLC) as the core
of the automatic door control system. Analysis of the working
principle of the control system, describes the hardware composition of
the system,introduces the human detection, position
detection, automatic door system detection and control circuit of
the door operation process, determine the selection and I/O of
PLC are described.
The operation characteristics of PLC, the reasonable
optimization of the workflow control system. On this basis, given
the function of order flow chart, program control system software
design diagram, external control terminal wiring diagram and
PLC ladder diagram etc.. This design introduces the application
of programmable controller to replace the
