Internet Publication Time: 2013-04-26 14:41
Internet Publication Address: wwwki/kcms/detail/41.1081.T.20130426.1441.074.html
Automatic-door Design and Implementation
Bad on PLC
Quan Zhiyong
（the Northern Electromechanical School，Zhangjiakou City,Hebei Province, 075000）Abstract: Automatic-door is a contorller unit to translate man’s accessing movement into comprehensible signal of door-opening,then open the door through the drive syestem,and clo the door when man is leaving,so that we can control the door open and clo system. Key word：Automatic-door；designment；PLC
Chine library classification number: TM762 literature
A article number: 1003-5168 (2013) '06-0085-01
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jillian murray
Entering the 21st century, with the rapid development of China's economy, automatic door has been widely applied in the residents. Control unit determines the performance of the automatic door, nowadays, programmable controller (ProgrammablelogicController, PLC) become the most stable field of automatic door control unit. PLC technique has high reliability, strong anti-interference ability, fully functional, high applicability, system design, construction, small amount of work to maintain convenient, easy to transform, small volume, light weight, low power consumption advantages.
1 Automatic door control system design
As shown in figure 1 is the automatic control of the overall design of the structure. Pul signal is mainly produced by the photoelectric switch, signal input to PLC, through the.
四六级口语报名distribution of the PLC, and then amplified to control stepper motor to control load, so as to make the automatic door for normal work
Signal Signal Power Stepper
英语教师培训心得Load Impul Assignment Multiplier Motor
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Figure1.1 Overall designment diagram
2 Automatic door control hardware
areyoukiddingAutomatic door control unit by the outside door detection photoelectric switch K1, photoelectric detection switch K2, open the door in place limit switch open K3, clo to the limit switch K4, actuator KM1 (turn) dc motor is clod, the actuator KM2 (make dc motor reversal), and other parts.
Process for automatic door control system: when someone from the inside out or from outside to inside through the photoelectric detection switch K1 and K2, open the door actuator KM1 movement, the motor forward, to open the door limit switch K3, the motor stops running. Automatic door in open position for 8 conds, automatically enter the shutdown process, clo the door actuator KM2 was starting motor reversal, when the door is moved to the clod position limit switch K4, motor to stop running. In the closing process, when there are workers from outside to inside or from outside to inside through photoelectric detection switch K2 or K1, should immediately stop is clod, and automatically in the process of open the door.
Within eight conds waiting time after open the door, if there are people from outside to inside or from inside to outside through the photoelectric detection switch K2 or K1, must start after wait for 8 conds, and then automatically enters the shutdown process.
3 Automatic door control quence function
First initialize the pul and press the start button clos the x007, if there was an inspection within the switch or switch signal outside x001 or x002 closure. Due to long x003 door limit switch is clod, so y000 coil electricity, has a theory analysis on the photoelectric detection switch is triggered pul trigger so need lf-locking. When y000 coil electricity
y000 clod, the motor moving turn automatic doors, open process.
(1) when the door fully open, make the door limit switch open x003, y000 coil power. The motor stop running.bc是什么意思
(2) when they stop moving, becau of the long clod the door limit switch into a long open, allowing long clod. For 8 conds delay, if the outside inspection within the switch or switch x001 or x002 signal, makes T0 time delay again.
(3) when the 8 conds of delay after the completion of T0 coil electricity, shut the door limit switch clod, so make y001 electricity and lf-locking, motor reversal clos execution process.
(4) in the closing process, if the inspection within the switch or switch x001, x002 signal and make y0
make yourlf00 electricity, becau in the process of closing y000 long clod, at open and clod interrupt process, to open the door.
4 Automatic door control PLC wiring
X001 outside light detecting electric switch X002 door light electricity switch
Open X003 limit electricity switch X004 limit electricity switch
X005 overload protection switch X006 emergency stop switch
X007 start stop X010 manually open the door
X011 manually open the door clod KM1 actuator
KM2 clo actuators
Figure 2 External wiring diagram of PLC automatic controller
5 System debugging and analysis
(1) press the start button clos the x007 first, when there was an inspection within the switch or switch signal outside x001 or x002 when clod. Due to long x003 door limit switch is clod, so y000 coil electricity, known from the analysis of principle of the photoelectric pul trigger switch trigger mode is so you need to lock. When y000 coil electricity y000 clod, the motor moving turn automatic doors, open process.
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(2) when the door fully open, make the door limit switch open x003, y000 coil power. The motor stop running.
(3) when they stop moving, becau of the long clod the door limit switch into a long switch x001 or x002 signal measurement is T0 time delay again.
(4) when the 8 conds of delay after the completion of T0 coil electricity, shut the door limit switch clod, so make y001 electricity and lf-locking, motor reversal clos execution process.
(5) in the closing process, if the inspection within the switch or switch x001, x002 signal and make y000 electricity, becau in the process of closing y000 long clod, at open and clod interrupt process, to open the door.
ya ya ying6 Conclusion
This design bad on PLC control of automatic door, basically meet the design requirements, compared with other control modes of automatic doors, has the advantages of high reliability, long rvice life, to a certain extent, promote the development of automation technology.
Author introduction:
QuanZhiYong (1981 -), male, hebei stock source, lecturer, rearch direction: electrical control and automation.
