Vehicle scheduling simulation control system based on PLC and NX

abstract: this paper use the Siemens NX software design of the vehicle scheduling simulation model, then using the Siemens PLC controller and 1200 KTP700PN touch screen by OPC realized the simulation control of the model. Keywords: Siemens PLCNX vehicle scheduling The Abstract: The vehicle scheduling simulation model is designed by using Siemens NX software. 模型的模拟控制实现通过使用西门子1200 PLC和KTP700PN触摸屏通过OPC模式。 关键词:西门子PLCNXVehicle调度【 Chinese library classification number. U492. 2 + 2' Document id code 】 The article number 1606 - B 5123 ( 2019). 11 - 0000 - 001 introduction project application NX 3 d simulation software to establish the vehicle scheduling simulation model, through the OPC protocol connection KepServer, KepServer and S7 - again 1200 PLC controller communication, realizing the hardware-in-the-loop simulation control of vehicle scheduling model. This design includes: car storage options ( Cheap garage, mid-range garage, high-grade garage) , automatic car outbound travel, conveyor belt, distance control, position control, position control and garages protection control, energy saving control, joint control and running state monitoring, etc. System analysis 2. 1 control functions ( 1) System initialization: at the start of the system, vehicle scheduling system model will start running signal hint, need after receiving the signal control program, to make the necessary initialization. （ 2) Vehicle scheduling system module cohesion between control: vehicle scheduling system would stay according to the current state of the vehicle scheduling and dispatching of vehicles quantity, garage temporary residual volume, etc. , reasonable response accordingly. When, for example, have been transferred to the garage is full, the garage until the garage out vehicles are unable to response to a signal. （ 3) Start-stop control: when the artificial scheduling system always console input the start signal, the main circuit, the corresponding sensor and electric motor start, press the stop button, power circuit, scheduling system stops running. （ 4) Standby dormancy: when there is no instruction scheduling system, each module in the system to enter standby mode. But after receiving instructions or signal, and will automatically be put into use again. 2. Two other features ( 1) Monitoring function: in the process of operation, through the photoelectric sensors' vehicle scheduling operation condition and uploaded to the touch screen in real time. Each parking garage are set up under the pressure sensor, when detected the car seat of a car, on a touch screen display. Two section of a certain distance from the conveyor belt set photoelectric sensor, when scheduling beyond the safe distance of vehicle may cause scratch in border with conveyor belt, send out alarm and display on the touch screen. （ 2) Real-time display function: the console touch screen display the current vehicle scheduling operation condition as well as the garage vehicle residues such as feedback signal. （ 3) Protection function: when the garage empty car is zero, the system will no longer receive the garage of the incoming signal. 3 system design system overall structure is shown in figure 1, includes the main controller, the controlled object, such as monitoring terminal three parts. Virtual simulation system connection diagram (figure 1 1) Main controller: integrated system requirements and system cost into consideration, such as selection of Siemens S7 - 1200 series PLC controller as the main controller, including the power module, CPU module ( 2) Controlled object: vehicle scheduling simulation model ( 3) Monitoring terminal: laptop the whole control system equipment and equipment list as shown in table 1, the control circuit is shown in figure 2. Table 1 model of control system equipment and software list name unit quantity 6 ep1333 - note the power supply module 3 ba10 block 1 120/230 V AC to DC 24 V / 5 a CPU module 1214 c as a member, read on.
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