Elevater Control System Based On MCU
Student: Ma Wei , Institute of Electronics and Information
Tutor: Gao XiuE, Institute of Electronics and Information
[Abstract]This paper introduces the 80C51 microcontroller as the core control
device of the elevator control system, including the issues outlined, program feasibility
studies, hardware design, software design, system debugging, and several other parts.The
system uses a microcontroller as the control centre, Firstly, it is by scanning the internal
and external level change caused by keyboard to be a user requests information to the
microcontroller, The next is that the single chip controls the motor based on test results
floors stopped in the target floor. Hardware part mainly are made of the microcontroller,
floor detection module, level digital display, electric motor drive module, key scan
module, alarm module, circuit directions up and down the line calls and other
components.Floor detection uses optical sensors. When elevator goes to the appropriate
floor, Photoelectric sensors produce level changes sent to the microcontroller to
determine the floor,.The part of motor control uses H Bridge type circuit to control the
DC motor .Software components intorduce System programming design ideas,
procedures, functional analysis . It is not only focusing on the logical design of the main
structure but also separately introduced the warning function, the demonstration function,
the pressed key scanning, the position read, the demonstration, the lift control logic small
steelyard procedure structure and the function. Software components use C language.
This realization way is the use of Interrupt mode to detect the information of the floor
sent to the Digital tube . The hardware design of the system combined with the software
is simple and reliable. So It is basically to achieve simulation of elevator running five
floors.
[Key words]Atmega128; DC motor; infrared sensor; elevator control;
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