Elevator control project of machinery building

First, the system hardware interface definition:

1. Control section: first on each floor of the elevator port to be equipped with control uplink or downlink button. The interior of the elevator has a stop button on each floor and the corresponding LED lights show the status of the floor and the upper and lower rows. where the upper and lower lines can be the positive and negative of the motor to get information, floors can be passed through each floor, travel switch open and close to obtain information.

2. Power part: The upper and lower line of the elevator is controlled by the motor's opening and closing and positive and negative. Each elevator by an AC asynchronous Inverter motor and inverter control, PLC to the frequency converter to send three switching signals: forward, reverse, stop. Thus the control of the motor is realized.

Second, the system function definition:

1. Display: The elevator inside and the elevator port must have the display floor and the upper and lower line of LED lights, so that the passengers at this time the elevator in the state. There is also the elevator in the use of the button in the floor of the LED lights in the after-press variable, after reaching the designated floor of the sensor to accept the information from the floor, thereby extinguished.

2. Operation: The switch is controlled by PLC to control the opening and closing of the motor and the positive and negative turn. Elevator to reach the staircase or elevator in the interior of the selected floor when the operation, in each arrival of the designated floor continue to operate, in the above floor when there is no demand, timely downward.

3. Induction and judgment: elevators must sense the needs of each floor, so as to judge, and then pass to the PLC information, so as to control the elevator motor and LED lights, you must determine whether the next floor has passengers out of the elevator, or have passengers into the elevator, if not, continue to run, there is a pause. When there is no demand on the floor or at the top of the floor, let the elevator down, this is the place to make judgments.

Third, software function module decomposition and inter-module interface definition:

Roughly divided into three modules: Signal processing module, information display module and motor control operation module.

Signal Processing module will get the information processed, and then pass it to the motor Control operation module, control the operation of the motor, and then communicate the information to the display module, the information displayed on the LED light, so as to convey to the passengers.

Elevator control project of machinery building