Summary of the invention
The present invention is exactly in order to address the above problem, provide a kind of have rational in infrastructure, easy to use, highly integrated, each control appliance that has now in the workshop can be incorporated in the switch board, realize the automatic control design religion preface test platform of multiple function integrations such as Long-distance Control, teaching design, the quick replacing of spare part.
For achieving the above object, the present invention has adopted following technical scheme: a kind of self control designed teaching experiment platform for tobacco industry, it is made up of at least one switch board, supply unit is installed in the switch board, at least one control device is installed in the described switch board, each control device all is connected with switch, and switch then is connected with the network in workshop; Each control device is formed the control network by the subordinate equipment in corresponding standard communication network and the switch board simultaneously; Information from each equipment of workshop is shown by touch-screen, by finishing Long-distance Control to each equipment in workshop to the operation of operation screen.
Described switch board is three gate control cabinets, and cable trough is arranged in it.
Described supply unit comprises the main switch that is installed in switch board one side, and main switch is connected with each loop branch switch by the cable in the cable trough, and each branch switch connects each subsystem power supply, so that power supply and overcurrent protection to be provided; The dc source part is then powered to control device; Control device to various signals gather, computing and output control.
Described control device is divided into programmable control unit and industrial computer, they respectively standard network communication protocols and the corresponding subordinate equipment by separately be unified into network.
Described programmable control unit is divided into extensive Programmable Logic Controller and middle scale Programmable Logic Controller two parts, wherein extensive Programmable Logic Controller is connected with frequency converter with Tours gram module, flowmeter by the PROFIBUS-DP net, and it also adopts the PROFIBUS-PA net to be connected with mass flowmenter, temperature sensor through switch simultaneously; Middle scale Programmable Logic Controller is connected with operation screen, PROFIBUS-DP slave station and Tours gram analog quantity input module by the PROFIBUS-DP net, and this module is connected with screen bar code recognizer.
Adopt Siemens S7 standard communication network to connect between described extensive Programmable Logic Controller and middle scale Programmable Logic Controller, they also connect with touch-screen by Siemens MPI net simultaneously.
Described Tours gram module is a remote I/O control template, is used to gather digital quantity and analog signals, and the output corresponding control signal; Flowmeter is used to measure instantaneous delivery and the cumulative amount in the reinforced pipeline, and the PROFIBUS-PA network interface is arranged on it; Described Frequency Converter Control workshop charge pump drive motors has the RPOFIBUS-DP network interface on it; Described PROFIBUS-DP slave station is Siemens ET200S remote I/O control template and loop, is used for by PROFIBUS-DP network control system motor and other device.
Go back installation rate sensor and actuator in the described switch board, tachometric survey is provided and carries out analog signals collections such as control and control; The infrared communication device, it adopts the PROFIBUS-DP communication modes to transmit signal.
The present invention has adopted one three Men Weitu switch board, but all control technologys in workshop and important control appliance have been comprised, thereby realized with in the workshop each independently control appliance by dispersity to central controlled purpose, operating personnel go to operate, safeguard in each position in workshop with regard to not needing like this, as long as just can move management, monitoring, control and the maintenance of concentrating to the equipment in whole workshop in a switch board.Because the existing equipment in this switch board and the workshop while also deposits, and each control device that is wherein comprised all the unit type with on-the-spot is identical, so in a single day, on-the-spot equipment breaks down, identical device in the switch board of the present invention can be removed the equipment of changing damage, and needn't go to search in the storehouse related accessory again, thereby shortened maintenance time, can not cause to have a strong impact on production.Because switch board of the present invention has comprised the whole crucial control appliance at scene, workshop, also be connected by network simultaneously with each equipment in workshop, the technical staff is as long as but the whole control appliances with regard to the workshop are familiar with in this switch board like this, and fault got rid of, shorten personnel's training time, improved operating efficiency.
The components and parts of switch board of the present invention from using comprise Siemens S7-400 series of PLC Programmable Logic Controller, S7-300 series of PLC Programmable Logic Controller, display screen, industrial computer, TURCK (Tours gram) control module, screen bar code recognizer, displacement transducer, temperature sensor, frequency converter, loop, signal simulator or the like.From the control network, comprise on the existing known production line most of procotol such as EPA, PROFIBUS-DP net, MPI net, PA net etc.From the signal of handling, comprise digital quantity input signal, digital quantity output signal, analog quantity input signal, analog quantity output signals, high-speed counting pulse signal and bar code scan signal etc.The engineering software that will use from system, comprise cabinet inner control parts such as INTOUCH industrial control software, PROTOOL configuration software, SIMATIC Manager programming software mainly by the medium-and-large-sized PLC Programmable Logic Controller of S7-400/S7-300, PC670 industrial computer etc. constitutes with the PROFIBUS network devices.Wherein, can provide the major control function by two programmable controllers, industrial computer provides human-machine interface function, and devices such as frequency converter and Tours gram are connected with remote system with PLC with EPA by the PROFIBUS network, and various network savvies are provided.
Its main function has: instructional function, (1) PLC elementary teaching, for example hardware teaching, software programming teaching and Premium Features programming study.(2) fieldbus networking teaching is as DP e-learning, PA e-learning and AS-I e-learning.(3) EPA teaching is as network configuration and software programming debugging etc.(4) high-level software teaching, comprise the Database Systems teaching, mainly be SQL SERVER 2000 Database Systems, industrial control software teaching (INTOUCH, WINCC), high-level programming language (PB9, C++BUILDER6, DELPHI 7, VB6) and operating system installation configuration teaching (WINNT4/WIN2000/WINXP/WIN2003).
The spare part function: provide to pass under the teleprogram and electric components replacement function, PLC and remote I/O template are replaced function, and the replacement function of man-machine interfaces such as PC670/TP270/OP37 comprises that the working procedure of man-machine interface is upgraded and following the biography.
Design and test function: system can provide programming and the design of automatic control loop, the checking work of program and simulation hardware experiment and programme-control and network control.
Remote device diagnostics and data backup function: system provides remote control program and monitoring programme backup and debug function, teledata backup and restore funcitons.Functions such as remote fault diagnosis.
Advantage of the present invention is: the long-distance on-line function with the field apparatus control system can be provided, remote monitoring and fault diagnosis functions can be provided, also can carry out program backup and data backup to on-the-spot each control system by network.As the experiment equipment of teaching, training and exercise, can allow the technical staff learn various industrial control networks and control technology, learn installation, the debugging of various new units.Allow the technical staff in study new technology, new knowledge, can have an opportunity to put into practice by this platform.This platform changes the location mode of standby redundancy in addition, as emergency processing the spare part in the switch board is just removed and can use during the production equipment fault, improve the speed of parts replacement, owing to adopt integrated program backup, man-machine interface etc. can be changed to the production scene in the shortest time, shorten maintenance time.
Description of drawings
Fig. 1 is a networking of the present invention topo graph;
Fig. 2 is a mounting structure schematic diagram of the present invention;
Fig. 3 is a switch board door schematic diagram of the present invention.
Wherein, 1. switch, 2. large-scale Programmable Logic Controller, 3. medium-sized Programmable Logic Controller, 4. industrial computer, 5. workshop looped network, 6.S7 the standard communication network, 7.MPI net, 8. touch-screen, 9.PROFIBUS-DP net, 10. the Tours restrains module, 11. flowmeters, 12. frequency converter, 13. control motors, 14. interchangers, 15.PROFIBUS-PA net, 16. mass flowmenters, 17. temperature sensors, 18. Tours gram analog quantity input module, 19. Tours gram digital quantity output module, 20. operation screens, 21.PROFIBUS-DP slave station, 22. screen bar code recognizers, 23. control computers, 24. cabinet, 25. main switches, 26. cable trough, 27. each loop branch switch, 28. sockets, 29.DC24V dc source, 30. cabinet internal wiring terminal row, 31.PLC signal simulator, 32. expansion templates, 33. control relays, 34. bar-code scanner, 35. velocity sensor, 36. infrared communication devices, 37. cabinet doors.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Among Fig. 1, large-scale Programmable Logic Controller 2, model is S7-400 and medium-sized Programmable Logic Controller 3, and model is S7-300 and industrial computer 4, and model is that PC670 forms control system of the present invention.They connect with switch 1, and 1 of switch connects with workshop looped network 5, thereby control system can in time be gathered the data of industry spot, and makes corresponding processing.Switch 1 also connects with a control computer 23 simultaneously.3 of large-scale Programmable Logic Controller 2 and medium-sized Programmable Logic Controllers adopt S7 standard communication network 6 to carry out communication 6.Also pass through Siemens MPI net 7 and touch-screen 8 simultaneously between two Programmable Logic Controllers, model is that TP270 connects, and various industry control information are shown on screen.Large-scale Programmable Logic Controller 2 also connects with Tours gram module 10, flowmeter 11 and frequency converter 12 and control motor 13 by PROFIBUS-DP net 9, and connect with PROFIBUS-PA net 15 by interchanger 14, on PROFIBUS-PA net 15, be connected with mass flowmenter 16, temperature sensor 17 respectively, and Tours gram analog quantity input module 18 and Tours gram digital quantity output module 19, wherein mass flowmenter 16 is responsible for detecting the instantaneous delivery and the integrated flow of essence and flavoring agent, and temperature sensor 17 is used to detect the temperature of atmosphere.
3 of medium-sized Programmable Logic Controllers restrain analog quantity input module 18 by PROFIBUS-DP net 9 with operation screen 20, PROFIBUS-DP slave station 21 and Tours and connect, and this module connects with screen bar code recognizer 22.
Fig. 2 has provided the installation site of each equipment in switch board.In cabinet 24 left upper portion main switch 25 is arranged, it provides whole system power supply and power protection effect.Each loop branch switch 27 that centralized arrangement is arranged in each cable trough 26 of cabinet 24 1 sides is for each subsystem power supply provides and overcurrent protection.Also have socket 28 on cabinet 24 tops, it provides ground power supplys such as power supply and debugging notebook for switch 1.With the bottom DC24V dc source 29 is arranged respectively in cabinet 24, it provides 24V dc source for equipment such as Programmable Logic Controller PLC and industrial computer 4.What link with this dc source is cabinet internal wiring terminal row 30.The dc source of cabinet 24 bottoms connects with frequency converter 12, and it is the control frequency converter of charge pump drive motors, band PROFIBUS-DP network interface.
On cabinet 24 tops of centre is large-scale programmable controller 2, and it provides switching value input and output, analog quantity input and output, sequential operation, functions such as communication and network control.This Programmable Logic Controller 2 connects with PC670 Siemens industrial monitoring machine 4, can move high level operating system and professional industrial configuration software, realizes functions such as monitoring, trend, data-base recording and form.In their bottom is Programmable Logic Controller PLC signal simulator 31, and it provides multiple simulated test signal, comprises switching value, analog quantity, instrument demonstration etc.Medium-sized programmable controller 3 provides switching value, analog quantity output output and control ability and various types of network functions.At Programmable Logic Controller is for 3 times expansion templates 32, and it expands the control ability of medium-sized programmable controller 3, and more I/O input and output point is provided.
Above the right side of cabinet 24, be control relay 33, relay logic control and signal allocation function are provided.Be PLC signal simulator 31 below control relay 33, it provides the toggle switch simulate signal.The remote I/O control template and the loop of PROFIBUS-DP slave station 21 are used for by other devices such as PROFIBUS-DP network control motors.Be bar-code scanner 34 thereunder, the bar code scan function is provided, and transmit signal by the PROFIBUS-DP network.Temperature sensor 17 and bar-code scanner 34 and provide the temperature detection ability on same cable trough 26, carry out power supply by the PROFIBUS-PA network and supply with and data acquisition.In cabinet 24 bottoms are velocity sensors 35, and it provides tachometric survey and carries out control and wait analog signals collection and control.Is infrared communication device 36 with it on same cable trough 26, and it provides infrared ray DP communication function.It on the cabinet door 37 of cabinet 24 OP37 button operation screen 20, as shown in Figure 3, be used for the operation of display frame and parameter, and TP270-touch-screen 8, be used for display device picture and touch operation and also have MP370 touch-screen 8, its subsidiary Ethernet interface can be realized the EPA networking, and rapid data transmission is provided.