Abstract
Liquid level monitoring system are used in many places, such as in
the production of the factory, liquid level control properly will affect
the production of products, the quality and appearance, in the life, we
can use of water, often need to the water tank or water tower water level
monitoring, liquid level monitoring system is closely related with our
life, it relates to the quality and efficiency of our lives, so we have
to continuously monitor and control the liquid level.
The design is implemented by AT89C51 SCM of water level monitoring,
through the analysis of field conditions and in the system through the
liquid level transmitter (20mA) to obtain information, the current
collection is too small and not easily measured, so it is necessary to
amplifier circuit for amplifying the, through processing, by the modulus
transform as a binary number of incoming MCU, it can real time of data
processing. And in the design of software in this article introduced flow
chart of the system circuit schematic diagram and software compiling,
and through the display circuit the collected liquid height values are
shown to us.
At last, the program of the system is written by C51 Keil, and the
simulation is carried out in the Proteus software, and the liquid level
monitoring is realized. Through the application of this design, it can
meet the indirect measurement, and the purpose of the control and
management.
Keywords：SCM; liquid level control; Proteus simulation
