| MGV is a kind of mobile lifting car applied in special environment,which provides convenience for industrial site installation and production.This paper discusses in detail the design and implementation of MGV lifting trolley controller from three aspects: hardware design,software design and hardware debugging.According to the functional requirements,the MGV controller hardware is composed of the main control board and the slave board.The main control board processes and feedback each control signal through the single chip microcomputer.It USES two 7-segment LED digital tubes to display the alarm signal and the current state.An independent communication power supply module is designed to be distinguished from the main power supply module,and the control signals of the motor are separated by optical coupler to ensure that the motor will not be affected by electromagnetic noise.In order to meet the use of I/O port demand through the I2 C bus and have interrupt function and configuration register I/O port extender to the microcontroller I/O port extension,to achieve the microcontroller control of external devices.The slave board is the transfer board of each signal,which feeds the control signal to the external equipment such as motor,motor driver and sensor through the connector,and then transfers the input signal of these external equipment to the main control board for processing after being connected to the board through the connector.MGV control system realizes the detection of key signal,completes the corresponding lifting action and has a variety of monitoring measures to prevent the occurrence of danger.After field installation and debugging,through aging experiment and test,the designed MGV lifting trolley control system works stably and reliably,fully meeting the requirements of the system design specification. |
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