Abstract
SCM is a kind of integrated circuit chips, is to use very large
scale integrated circuit technology with data processing ability of
the central processor CPU RAM , read-only memory ROM, A variety of
I/O mouth and interrupt system, timer/counter function (may include
display driver circuit, pulse width modulation circuit, analog
multiplexer and A/D converter circuit) integration to A piece of
silicon consisting of A small and perfect microcomputer system,
widely used in industrial control field. Since the 1980 s, by the
time of the four, 8-bit microcontroller, development to the present
300 m high speed single chip microcomputer.
Engineering machinery is mostly logic control is more, such as
excavator forward, backward, turn, such as the main arm and forearm
lifting movement. If within a certain period of time to repeat a
series of action, the operator easy to feel boring, and the
intensity of labor is larger. Can make the machine after a series
of actions by people with a memory function, the repetitive
movements will be automatically completed? Using single chip
microcomputer logic control can be set down every action memory,
the next time will automatically in accordance with the time and
order.
This system is based on model of excavator control object, the
model has four motor respectively control the left and right wheel,
main arm, forearm. The curriculum design we made eight manual
buttons to move forward, backward, turn, the boom lift and forearm
movements, and a series of complete action, also designed a button
for manual and automatic conversion, and install wireless
transmission equipment, makes the control range of excavator.
