CN100415124C - Tobacco industry self-control design teaching test platform - Google Patents

Abstract

The invention discloses an automatic control design teaching test platform for the tobacco industry. It solves the existing problems of scattered control equipment, difficult maintenance, long training period for engineering and technical personnel, and difficulty in mastering technology. It has the advantages of reasonable structure, centralized management and configuration of various control devices, and multi-functional integration. Its structure is: It consists of at least one control cabinet. A power supply device is installed in the control cabinet. At least one control device is installed in the control cabinet. Each control device is connected to a switch, and the switch is connected to the network of the workshop; The standard communication network and the lower-level equipment in the control cabinet form a control network; the information from each equipment in the workshop is displayed on the touch screen, and the equipment in the workshop can be remotely controlled by operating the operation screen.

Description

Tobacco industry self-control design teaching test platform

technical field

The invention relates to a self-control design teaching test platform used in the tobacco industry.

Background technique

At present, the tobacco industry has a relatively high level of automation and mostly adopts the latest electrical and computer control technologies. In terms of automatic control technology, it is at the forefront of the manufacturing industry, and new equipment has been widely used in the tobacco industry. Due to the rapid technology update, it is difficult for technicians to master the increasingly complex and high-end automatic control technology in a short period of time, which makes the introduction of equipment, equipment maintenance and technological innovation more difficult, and will eventually affect the stability of tobacco product quality. There are various independent control devices on the tobacco production line. Although they can form an industrial control network through network cables and be managed by computers, their locations are scattered and their functions are single. It is impossible to centralize all the control systems of the entire industrial control network in one control cabinet. , resulting in slow troubleshooting and difficult maintenance; the existing control devices are often damaged because there are no spare parts and cannot be replaced in time, resulting in the failure of this link to work normally and affecting the operation of the entire production line.

Contents of the invention

In order to solve the above problems, the present invention provides a control cabinet with reasonable structure, convenient use and high integration, which can integrate the control equipment in the existing workshop into one control cabinet, and realize remote control, teaching design, quick replacement of spare parts, etc. A multi-function integrated self-control design teaching sequence test platform.

In order to achieve the above object, the present invention adopts the following technical solutions: a teaching test platform for self-control design for the tobacco industry, which is composed of at least one control cabinet, a power supply device is installed in the control cabinet, and at least one control device is installed in the control cabinet , each control device is connected to the switch, and the switch is connected to the network of the workshop; at the same time, each control device forms a control network with the lower-level equipment in the control cabinet through the corresponding standard communication network; the information from the equipment in the workshop is displayed on the touch screen. The operation of the operation screen can complete the remote control of each equipment in the workshop.

The control cabinet is a three-door control cabinet with cable slots inside.

The power supply device includes a main switch installed on one side of the control cabinet, the main switch is connected to each circuit shunt switch through cables in the cable groove, and each shunt switch is connected to each subsystem power supply to provide power supply and overcurrent protection; The DC power supply part supplies power to the control device; the control device collects, calculates and outputs various signals.

The control device is divided into a programmable control device and an industrial computer, which are respectively connected with corresponding lower-level equipment to form a network through their respective standard network communication protocols.

The programmable control device is divided into two parts, a large-scale programmable controller and a medium-scale programmable controller. The large-scale programmable controller is connected with the Turck module, flowmeter and frequency converter through the PROFIBUS-DP network, and at the same time It is also connected to the mass flowmeter and temperature sensor through the switch using PROFIBUS-PA network; the medium-scale programmable controller is connected to the operation panel, PROFIBUS-DP slave station and Turck analog input module through the PROFIBUS-DP network. Connect with barcode reader.

The large-scale programmable controller and the medium-scale programmable controller are connected by the Siemens S7 standard communication network, and they are also connected with the touch screen through the Siemens MPI network.

The Turck module is a remote I/O control module, which is used to collect digital and analog signals and output corresponding control signals; the flow meter is used to measure the instantaneous flow and cumulative amount in the feeding pipeline, and there is a PROFIBUS -PA network interface; the inverter controls the driving motor of the feeding pump in the workshop, and there is an RPOFIBUS-DP network interface on it; the PROFIBUS-DP slave station is a Siemens ET200S remote I/O control module and a power feeder, which are used to pass PROFIBUS- The DP network controls the motor and other devices.

A speed sensor and an actuator are also installed in the control cabinet to provide analog signal acquisition and control such as speed measurement and execution control; an infrared communicator uses PROFIBUS-DP communication mode to transmit signals.

The present invention adopts a three-door Rittal control cabinet, but it includes all the control technologies and important control equipment in the workshop, so as to achieve the purpose of changing the independent control equipment in the workshop from a decentralized state to a centralized control, so that the operator can It does not need to be operated and maintained at various locations in the workshop, as long as it is in a control cabinet, the equipment operation of the entire workshop can be centrally managed, monitored, controlled and maintained. Since the control cabinet coexists with the existing equipment in the workshop, and each control device contained therein is the same model as the equipment on site, once the equipment on site breaks down, the same equipment in the control cabinet of the present invention can be removed and replaced Damaged equipment without having to go to the warehouse to find related parts, thus shortening the repair time without seriously affecting production. Because the control cabinet of the present invention includes all the key control equipment on the workshop site, and is also connected with each equipment in the workshop through the network, the technicians can be familiar with all the control equipment in the workshop as long as they are in this one control cabinet, and can understand Troubleshooting, shortening the training time of personnel, and improving work efficiency.

The control cabinet of the present invention includes Siemens S7-400 series PLC programmable controller, S7-300 series PLC programmable controller, display screen, industrial computer, TURCK (Turck) control module, Barcode reader, displacement sensor, temperature sensor, frequency converter, feeder, signal simulator, etc. From the point of view of the control network, it includes most of the network protocols on the existing known production lines, such as industrial Ethernet, PROFIBUS-DP network, MPI network, PA network, etc. From the point of view of the processed signal, it includes digital input signal, digital output signal, analog input signal, analog output signal, high-speed counting pulse signal and barcode scanning signal, etc. From the point of view of the engineering software to be used by the system, including INTOUCH industrial control software, PROTOOL configuration software, SIMATIC Manager programming software, etc., the control part in the cabinet is mainly composed of 87-400/S7-300 medium and large PLC programmable controllers, PC670 industrial control computers, etc. And PROFIBUS network devices constitute. Among them, the two programmable controllers provide the main control functions, the industrial computer provides the man-machine interface function, the frequency converter and Turck and other devices are connected to the PLC and the remote system through the PROFIBUS network and industrial Ethernet to provide various networking functions.

Its main functions are: teaching function, (1) PLC basic teaching, such as hardware teaching, software programming teaching and advanced functional programming learning. (2) Fieldbus network teaching, such as DP network learning, PA network learning and AS-I network learning. (3) Industrial Ethernet teaching, such as network configuration and software programming debugging. (4) Advanced software teaching, including database system teaching, mainly SQL SERVER 2000 database system, industrial control software teaching (INTOUCH, WINCC), advanced programming language (PB9, C++BUILDER6, DELPHI 7, VB6) and operating system installation and configuration Teaching (WINNT4/WIN2000/WINXP/WIN2003).

Spare parts function: provide remote program download and electrical component replacement functions, PLC and remote I/O template replacement functions, PC670/TP270/OP37 and other human-machine interface replacement functions, including operating program upgrade and download of the human-machine interface.

Design and test functions: the system can provide program design and automatic control loop design, program and hardware simulation experiments, and verification of program control and network control.

Remote equipment diagnosis and data backup functions: the system provides remote control program and monitoring program backup and debugging functions, remote data backup and recovery functions. Functions such as remote fault diagnosis.

The advantages of the present invention are: it can provide the function of remote networking with the field equipment control system, can provide the functions of remote monitoring and fault diagnosis, and can also carry out program backup and data backup for each field control system through the network. As an experimental equipment for teaching training and practice, it can allow technicians to learn various industrial control networks and control technologies, and learn the installation and debugging of various new devices. Let technicians have the opportunity to practice through this platform when learning new technologies and knowledge. In addition, the platform changes the storage method of spare parts. When the production equipment fails, the spare parts in the control cabinet can be used as an emergency treatment, which improves the speed of spare parts replacement. Due to the use of integrated program backup, the man-machine interface can be kept in the shortest possible time. Time replacement to the production site, shortening maintenance time.

Description of drawings

Fig. 1 is a network topology diagram of the present invention;

Fig. 2 is a schematic diagram of the installation structure of the present invention;

Fig. 3 is a schematic diagram of the structure of the control cabinet door of the present invention.

Among them, 1. switch, 2. large programmable controller, 3. medium programmable controller, 4. industrial computer, 5. workshop ring network, 6. S7 standard communication network, 7. MPI network, 8. touch screen, 9. PROFIBUS-DP network, 10. Turck module, 11. Flow meter, 12. Inverter, 13. Control motor, 14. Exchanger, 15. PROFIBUS-PA network, 16. Mass flow meter, 17. Temperature sensor, 18. Turck analog input module, 19. Turck digital output module, 20. Operation panel, 21. PROFIBUS-DP slave station, 22. Barcode recognizer, 23. Control computer, 24. Cabinet, 25 .Main switch, 26. Cable groove, 27. Branch switch for each circuit, 28. Socket, 29. DC24V DC power supply, 30. Wiring terminal block in the cabinet, 31. PLC signal simulator, 32. Expansion template, 33. Control relay, 34. Bar code scanner, 35. Speed sensor, 36. Infrared communicator, 37. Cabinet door.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Among Fig. 1, large programmable controller 2, model is S7-400 and medium-sized programmable controller 3, model is S7-300 and industrial control computer 4, model is PC670 to form the control system of the present invention. They are connected with the switch 1, and the switch 1 is connected with the workshop ring network 5, so that the control system can collect the data of the industrial site in time and make corresponding processing. At the same time, the switch 1 is also connected with a control computer 23 . The S7 standard communication network 6 is used for communication 6 between the large-scale programmable controller 2 and the medium-sized programmable controller 3 . At the same time, the two programmable controllers are also connected with the touch screen 8, the model is TP270, through the Siemens MPI network 7, and display various industrial control information on the screen. The large-scale programmable controller 2 is also connected with the Turck module 10, the flowmeter 11, the frequency converter 12 and the control motor 13 through the PROFIBUS-DP network 9, and connected with the PROFIBUS-PA network 15 through the switch 14. A mass flowmeter 16, a temperature sensor 17, a Turck analog input module 18 and a Turck digital output module 19 are respectively connected to the network 15, wherein the mass flowmeter 16 is responsible for detecting the instantaneous flow and cumulative flow of flavors and fragrances, The temperature sensor 17 is used to detect the temperature of the atmosphere.

The medium-sized programmable controller 3 is connected with the operation panel 20 , the PROFIBUS-DP slave station 21 and the Turck analog input module 18 through the PROFIBUS-DP network 9 , and the module is connected with the barcode recognizer 22 .

Figure 2 shows the installation position of each device in the control cabinet. There is a main switch 25 on the upper left side of the cabinet body 24, which provides power supply and power protection for the entire system. Each circuit shunt switch 27 is centrally arranged in each cable groove 26 on one side of the cabinet body 24 to provide power supply and overcurrent protection for each subsystem. There is also a socket 28 on the upper part of the cabinet body 24, which provides power for the switch 1 and power for debugging notebooks and the like. There are respectively DC24V DC power supplies 29 in the cabinet body 24 and the bottom, which provide 24V DC power supplies to devices such as programmable logic controllers PLC and industrial computers 4 . Connected with the DC power supply is the wiring terminal block 30 in the cabinet. The DC power supply at the bottom of the cabinet 24 is connected with the frequency converter 12, which is a control frequency converter for the driving motor of the feeding pump and has a PROFIBUS-DP network interface.

The upper part of the cabinet body 24 in the middle is a large-scale programmable controller 2, which provides functions such as digital input and output, analog input and output, program calculation, communication and network control. The programmable controller 2 is connected with the PC670 Siemens industrial monitoring machine 4, and can run advanced operating systems and professional industrial configuration software to realize functions such as monitoring, trends, database records, and reports. In their lower part is the programmable controller PLC signal emulator 31, which provides a variety of analog test signals, including switch value, analog value, instrument display and so on. Medium-sized programmable logic controller 3, providing switch value, analog output output and control capabilities, and various network functions. Under the programmable controller 3 is an expansion template 32, which expands the control capability of the medium-sized programmable controller 3 and provides more I/O input and output points.

On the upper right side of the cabinet body 24 is a control relay 33, which provides relay logic control and signal distribution functions. Below the control relay 33 is a PLC signal simulator 31, which provides a toggle switch simulation signal. The remote I/O control module and feeder of the PROFIBUS-DP slave station 21 are used to control other devices such as motors through the PROFIBUS-DP network. Below it is a barcode scanner 34, which provides a barcode scanning function and transmits signals through the PROFIBUS-DP network. The temperature sensor 17 is on the same cable slot 26 as the barcode scanner 34, and provides temperature detection capability, power supply and data collection through the PROFIBUS-PA network. In the lower part of the cabinet 24 is a speed sensor 35, which provides analog signal acquisition and control such as speed measurement and execution control. On the same cable slot 26 is an infrared communicator 36, which provides infrared DP communication function. On the cabinet door 37 of the cabinet body 24 is the OP37 key-press operation screen 20, as shown in Figure 3, for displaying screens and parameter operations, and TP270-touch screen 8, for displaying equipment screens and touch operations and MP370 touch screen 8 , it comes with an Ethernet interface, which can realize industrial Ethernet networking and provide fast data transmission.

Claims (8)

1. self control designed teaching experiment platform for tobacco industry, it is made up of at least one switch board, and supply unit is installed in the switch board, it is characterized in that: 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.

2. self control designed teaching experiment platform for tobacco industry according to claim 1 is characterized in that: described switch board is three gate control cabinets, and cable trough is arranged in it.

3. self control designed teaching experiment platform for tobacco industry according to claim 1, it is characterized in that: described supply unit comprises the main switch that is installed in switch board one side, main switch is connected with each loop branch switch by the cable in the cable trough, 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.

4. self control designed teaching experiment platform for tobacco industry according to claim 1, it is characterized in that: 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.

5. self control designed teaching experiment platform for tobacco industry according to claim 4, it is characterized in that: 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.

6. self control designed teaching experiment platform for tobacco industry according to claim 4, it is characterized in that: 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.

7. self control designed teaching experiment platform for tobacco industry according to claim 5 is characterized in that: 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.

8. self control designed teaching experiment platform for tobacco industry according to claim 1 is characterized in that: 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.

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