CN114594719B - Programmable control system and method based on i.MX6ULL - Google Patents
Programmable control system and method based on i.MX6ULL Download PDFInfo
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- CN114594719B CN114594719B CN202011425714.9A CN202011425714A CN114594719B CN 114594719 B CN114594719 B CN 114594719B CN 202011425714 A CN202011425714 A CN 202011425714A CN 114594719 B CN114594719 B CN 114594719B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1138—Configuration of I-O
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a programmable control system and a method based on i.MX6ULL, comprising a control module, a connection module and an electric module which are mutually connected in a communication way; the connection module is used for connecting and communicating with external equipment; the electric module is used for controlling and receiving feedback information to external electric equipment; the control module includes: the control unit is used for controlling the system to work according to a program; and the I.M 6ULL development unit is used for writing and developing the program through the I.M 6 ULL. Through control module, connection module and electric module's combination, increased control and electric structure's connection, and then reduced hardware circuit, along with hardware circuit's reduction, can further improve the holistic stability of system, reduce equipment volume and cost simultaneously, can realize unified standard PLC control structure.
Description
Technical Field
The invention relates to the technical field of programmable logic controllers, in particular to a programmable control system and method based on i.MX6ULL.
Background
PLC is the most commonly used control device today and can perform almost all tasks in the field of industrial control. In fact, the PLC has strong processing capacity on analog quantity. In most industrial control systems, therefore, PLCs have replaced Industrial Personal Computers (IPCs) as masters to accomplish complex industrial automation tasks.
The PLC has soon been developed to show its importance in industrial control, and the respective PLCs have been developed in japan, germany, france, and the like. Since the advent of PLC, it has been developed over the last 40 years, and has become one of the important industries in industrially developed countries such as the united states, de, day, law, etc. The total sales in the world is continuously rising, manufacturers are continuously emerging, and varieties are continuously renovated. The yield and the output value are greatly increased and the price is continuously reduced.
The production and management of industrial products are realized through PLC technical control and computer control for a long time, and the two high-efficiency control methods lay a solid foundation for the industrialized high-speed development of China and are two advanced technologies widely applied and popularized in China. The PLC technology is applied to all links of industrial production in China since the advent of the prior art, has the characteristics of small volume, convenient use, strong processing capacity and the like, and is promoted to gradually become the core content of industrial production and control in China, so that the PLC technology is more rapidly popularized in the industrial automation field in China, and gradually becomes a competitive control tool in the industrial production field in China. However, the internal structure system of the traditional PLC equipment is closed, and because hardware systems among manufacturers of the PLC equipment are different, different practical application effects are often caused by different manufacturers in the practical application process of the PLC equipment, so that a user needs to select a control rule corresponding to the PLC technology to operate after selecting the PLC technology, the stable operation of the PLC technology can be effectively realized, and the safety and rationality of industrial production are ensured. In recent years, with the continuous development of the whole economy in China, the development and innovation of domestic industrial automation are gradually perfected, the scale of an automatic control system is increased in the actual application process, the situation of unreasonable control in enterprises is caused, the actual operation and development of the enterprises are seriously affected, and the operation cost of the enterprises is increased. Meanwhile, in the system perfecting process of the automatic control system, the enterprise is more required to ensure the communication capacity of the enterprise, so that the enterprise can correctly know the information and data in the production process based on the communication capacity of the enterprise, and the industrial production method can be flexibly selected, and the scheme can be timely adjusted under the actual influence of market quotation. In addition, in the process of actually applying the PLC technology, in order to expand the operation efficiency of the control function in the system, many emerging PLC sensors are installed with control units, but these control units are difficult to be connected with PLC devices, so that the development of industrial production and automation construction presents a slow trend, and becomes an important technical problem to be solved in the industrial automation field.
Disclosure of Invention
The invention aims to provide a programmable control system and a programmable control method based on i.MX6ULL, which are used for solving the problem that in the prior art, because the internal structure systems are closed and the hardware systems are different, different practical application effects are often caused in the practical application process of PLC equipment.
The invention provides a programmable control system based on i.MX6ULL, which comprises a control module, a connection module which can be connected with the control module in a communication way and an electric module which can be connected with the connection module in a communication way; the connection module is used for connecting and communicating with external equipment; the electric module is used for controlling external electric equipment, receiving feedback information and transmitting data to the connecting module; the control module receives the data transmitted by the electrical module through the connection module and controls the work of the system based on the data transmitted by the connection module, and the control module comprises a control unit and an i.MX6ULL development unit connected with the control unit; the control unit is used for controlling the system to work according to a program; and the i.MX6ULL development unit writes and develops a program based on the data transmitted by the connection module.
In one embodiment of the present invention, the connection module includes a communication unit and an interface unit that can be communicatively connected, where the communication unit is used to connect with an external device related to a communication-related protocol; the interface unit is used for connecting with external equipment related to the interface.
In an embodiment of the present invention, the communication unit includes an RS485 communication subunit, a CAN communication subunit, and a USB communication subunit that are communicatively connected to each other, where the RS485 communication subunit is configured to perform communication connection with a device having an RS485 related protocol; the CAN communication subunit is used for carrying out communication connection with equipment with a CAN related protocol; the USB communication subunit is used for carrying out communication connection with equipment with a USB related protocol.
In one embodiment of the present invention, the interface unit includes an ethernet interface, an EtherCAT interface, and a backplane bus interface that are communicatively connected to each other; the Ethernet interface is used for connecting with an upper computer or equipment connected through Ethernet; the EtherCAT interface is used for being connected with a remote I/O adapter; the backboard bus interface is used for being connected with the expansion I/O module.
In an embodiment of the invention, the control module further comprises a power supply unit and a status indicator light electrically connected to the power supply unit, wherein the power supply unit is used for supplying power to the control module, the connection module and the electrical module; the status indicator lamp is used for displaying the working status of the control module.
In an embodiment of the present invention, the electrical module includes a processing unit, an I/O unit, and an interaction unit that are communicatively connected to each other, where the processing unit is configured to process a control instruction issued by the i.mx6ull development unit and the control unit, and upload a feedback signal fed back by an external device; the I/O unit is used for acquiring related data of the peripheral through the I/O interface; the interaction unit is used for carrying out HMI communication.
In one embodiment of the invention, the I/O unit includes a remote I/O adapter and an expansion I/O; the remote I/O adapter is used for connecting a remote I/O expander and transmitting data of an upper computer; the extended I/O is used to connect external sensors and related devices.
The invention also provides a programmable control method based on the i.MX6ULL, which comprises the following steps: s1, programming and developing a program through i.MX6ULL; s2, sending the written and developed program and controlling the external electrical equipment to work; s3, receiving feedback information of the external electrical equipment, and judging whether the external electrical equipment works normally or not according to the feedback information; if yes, normal operation is performed; if not, returning to the step S1, and writing and developing the program for the second time through the i.MX6ULL.
In an embodiment of the present invention, the step S2 includes the steps of: connecting with an external device related to a communication related protocol; connecting with external equipment related to the interface; the step S3 includes the steps of: acquiring related data of the peripheral through an I/O interface; HMI communication is carried out with external equipment; and processing the control instruction issued by the i.MX6ULL development unit and the control unit and uploading a feedback signal fed back by the peripheral equipment.
In one embodiment of the present invention, the step of "connecting with an external device associated with a communication-related protocol" includes the steps of: communication connection is carried out with equipment with RS485 related protocol; the method comprises the steps of performing communication connection with equipment with a CAN related protocol; communication connection is carried out with equipment with USB related protocol; the step of acquiring the related data of the peripheral through the I/O interface comprises the following steps: the device is connected with an upper computer or equipment connected through an Ethernet; connect with a remote I/O adapter; connecting with the expansion I/O module; wherein the step of "connecting with a remote I/O adapter" comprises the steps of: connecting with a remote I/O expander to transfer upper computer data; external sensors and related devices are connected.
The i.MX6ULL-based programmable control system and method of the invention have the following advantages:
through control module, connection module and electric module's combination, increased control and electric structure's connection, and then reduced hardware circuit, along with hardware circuit's reduction, can further improve the holistic stability of system, reduce equipment volume and cost simultaneously, can realize unified standard PLC control structure.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 shows a schematic block diagram of the i.mx6ull-based programmable control system of the present invention.
Fig. 2 shows a schematic flow diagram of a programmable control method based on i.mx6ull in the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1, fig. 1 is a schematic block diagram of a programmable control system based on i.mx6ull in the present invention. The invention provides a programmable control system based on i.MX6ULL, which comprises a control module, a connection module and an electric module which are mutually connected in a communication way; the connection module is used for connecting and communicating with external equipment; the electric module is used for controlling and receiving feedback information to external electric equipment; the control module includes: the control unit is used for controlling the system to work according to a program; and the I.M 6ULL development unit is used for writing and developing the program through the I.M 6 ULL. The programmable structure taking i.MX6ULL as the core has the advantages of simple hardware circuit, rich interfaces, various expansion structures, low cost, small volume and high development degree. The i.mx6ull development unit can generally adopt i.mx6ull core board, in the design, and the core board adopts eight-layer board design, and the bottom plate adopts four-layer board design, and the core board uses 8 layers to guarantee complete ground plane and intermediate signal's shielding layer for whole core board has very outstanding performance in EMC and model integrality, and the core board adopts the encapsulation form of metal casing shielding, makes self EMS and EMI performance all further promote.
In one embodiment, the connection module includes: a communication unit for connecting with an external device related to a communication-related protocol; and the interface unit is used for connecting with external equipment related to the interface. Further, the communication unit includes: the RS485 communication subunit is used for carrying out communication connection with equipment with an RS485 related protocol; the CAN communication subunit is used for carrying out communication connection with equipment with a CAN related protocol; and the USB communication subunit is used for carrying out communication connection with equipment with a USB related protocol. Preferably, the interface unit includes: the Ethernet interface is used for connecting with an upper computer or equipment connected through the Ethernet; the EtherCAT interface is used for being connected with the remote I/O adapter; and the backboard bus interface is used for being connected with the expansion I/O module.
In the embodiment, the processing of the RS485 is designed according to the industrial-level circuit design standard, a high-voltage isolation power supply is adopted, the isolation voltage reaches 1500V, and the problem of communication faults caused by overlarge voltage difference to the ground in the process of communication connection of equipment is effectively avoided. Meanwhile, the USB adopts an ESD protection scheme and overcurrent protection measures, and the power output part also uses a 47uF tantalum capacitor, so that the influence of USB equipment on a power supply is reduced.
In another embodiment, the control module further comprises: the power supply unit is used for supplying power to the control module, the connection module and the electrical module; the power supply unit may also be used to step down the input power to power the i.mx6ull development unit and related components, and to provide power to the control unit, I/O unit, etc., the power supply unit being a 24V input. And the state indicator lamp is used for displaying the working state of the control module. In the embodiment, the integrated inductor is used, so that magnetic leakage and electromagnetic radiation of the inductor are effectively prevented.
Typically, the electrical module comprises: the processing unit is used for processing the control instruction issued by the i.MX6ULL development unit and the control unit and uploading feedback signals fed back by the peripheral equipment; the I/O unit is used for acquiring related data of the peripheral through the I/O interface; and the interaction unit is used for carrying out HMI communication. Further, the I/O unit includes: remote I/O adapter: the remote I/O expander is used for connecting with a remote I/O expander and transmitting data of an upper computer; extended I/O: when the device is used for connecting an external sensor and related equipment, the number of I/Os can be correspondingly increased, decreased and expanded according to the requirements so as to meet the requirements of connecting peripheral equipment.
As shown in fig. 2, fig. 2 is a schematic block diagram showing a flow chart of the i.mx6ull-based programmable control method in the present invention. The invention also provides a programmable control method based on the i.MX6ULL, which comprises the following steps: s1, programming and developing a program through i.MX6ULL; s2, sending the written and developed program and controlling the external electrical equipment to work; s3, receiving feedback information of the external electrical equipment, and judging whether the external electrical equipment works normally or not according to the feedback information; if yes, normal operation is performed; if not, returning to the step S1, and writing and developing the program for the second time through the i.MX6ULL. The i.mx6ull development unit can generally adopt i.mx6ull core board, in the design, and the core board adopts eight-layer board design, and the bottom plate adopts four-layer board design, and the core board uses 8 layers to guarantee complete ground plane and intermediate signal's shielding layer for whole core board has very outstanding performance in EMC and model integrality, and the core board adopts the encapsulation form of metal casing shielding, makes self EMS and EMI performance all further promote.
In one embodiment, the step S2 includes the steps of: connecting with an external device related to a communication related protocol; connecting with external equipment related to the interface; the step S3 includes the steps of: acquiring related data of the peripheral through an I/O interface; HMI communication is carried out with external equipment; and processing the control instruction issued by the i.MX6ULL development unit and the control unit and uploading a feedback signal fed back by the peripheral equipment.
Further, the step of "connecting with an external device related to a communication-related protocol" includes the steps of: communication connection is carried out with equipment with RS485 related protocol; the method comprises the steps of performing communication connection with equipment with a CAN related protocol; communication connection is carried out with equipment with USB related protocol; the step of acquiring the related data of the peripheral through the I/O interface comprises the following steps: the device is connected with an upper computer or equipment connected through an Ethernet; connect with a remote I/O adapter; connecting with the expansion I/O module; wherein the step of "connecting with a remote I/O adapter" comprises the steps of: connecting with a remote I/O expander to transfer upper computer data; external sensors and related devices are connected. In the embodiment, the processing of the RS485 is designed according to the industrial-level circuit design standard, a high-voltage isolation power supply is adopted, the isolation voltage reaches 1500V, and the problem of communication faults caused by overlarge voltage difference to the ground in the process of communication connection of equipment is effectively avoided. Meanwhile, the USB adopts an ESD protection scheme and overcurrent protection measures, and the power output part also uses a 47uF tantalum capacitor, so that the influence of USB equipment on a power supply is reduced.
According to the i.MX6ULL-based programmable control system and the i.MX6ULL-based programmable control method, the control module, the connection module and the electric module are combined, so that the connection between the control module and the electric structure is increased, the hardware circuit is further reduced, the overall stability of the system can be further improved along with the reduction of the hardware circuit, the volume and the cost of equipment are reduced, and a unified standard PLC control structure can be realized.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. A programmable control system based on i.mx6ull, characterized by comprising a control module, a connection module communicably connected to the control module, and an electrical module communicably connected to the connection module;
the connection module is used for connecting and communicating with external equipment;
the electric module is used for controlling external electric equipment, receiving feedback information and transmitting data to the connecting module;
the control module receives the data transmitted by the electrical module through the connection module and controls the work of the system based on the data transmitted by the connection module, and the control module comprises:
the control unit is used for controlling the system to work according to a program; and
the i.MX6ULL development unit is connected with the control unit and is used for writing and developing programs based on the data transmitted by the connection module;
the electrical module comprises a processing unit, an I/O unit and an interaction unit which are mutually connected in a communication way, wherein the processing unit is used for processing control instructions issued by the i.MX6ULL development unit and the control unit and uploading feedback signals fed back by peripheral equipment; the I/O unit is used for acquiring related data of the peripheral through the I/O interface; the interaction unit is used for performing HMI communication;
the I/O unit includes a remote I/O adapter and an expansion I/O; the remote I/O adapter is used for connecting a remote I/O expander and transmitting data of an upper computer; the extended I/O is used to connect external sensors and related devices.
2. The i.mx6ull-based programmable control system according to claim 1, characterized in that the connection module comprises a communication unit and an interface unit being communicatively connectable, wherein the communication unit is adapted to connect with an external device associated with a communication related protocol; the interface unit is used for connecting with external equipment related to the interface.
3. The i.mx6ull-based programmable control system according to claim 2, characterized in that the communication unit comprises an RS485 communication sub-unit, a CAN communication sub-unit and a USB communication sub-unit, which are communicatively connected to each other, wherein the RS485 communication sub-unit is adapted to make a communication connection with a device having an RS485 related protocol; the CAN communication subunit is used for carrying out communication connection with equipment with a CAN related protocol; the USB communication subunit is used for carrying out communication connection with equipment with a USB related protocol.
4. The i.mx6ull-based programmable control system according to claim 3, characterized in that the interface unit comprises an ethernet interface, an EtherCAT interface and a backplane bus interface, which are communicatively connected to each other; the Ethernet interface is used for connecting with an upper computer or equipment connected through Ethernet; the EtherCAT interface is used for being connected with a remote I/O adapter; the backboard bus interface is used for being connected with the expansion I/O module.
5. The i.mx6ull-based programmable control system according to claim 1, characterized in that the control module further comprises a power supply unit for powering the control module, the connection module and the electrical module, and a status indicator light electrically connected to the power supply unit; the status indicator lamp is used for displaying the working status of the control module.
6. A programmable control method based on i.mx6ull, comprising the steps of:
s1, programming and developing a program through i.MX6ULL;
s2, sending the written and developed program and controlling the external electrical equipment to work;
s3, receiving feedback information of the external electrical equipment, and judging whether the external electrical equipment works normally or not according to the feedback information; if yes, normal operation is performed; if not, returning to the step S1, and writing and developing the program for the second time through the i.MX6ULL;
the i.mx6ull-based programmable control method is implemented based on the i.mx6ull-based programmable control system of claim 1.
7. The i.mx6ull-based programmable control method according to claim 6, characterized in that said step S2 comprises the steps of:
connecting with an external device related to a communication related protocol;
connecting with external equipment related to the interface;
the step S3 includes the steps of:
acquiring related data of the peripheral through an I/O interface;
HMI communication is carried out with external equipment;
and processing the control instruction issued by the i.MX6ULL development unit and the control unit and uploading a feedback signal fed back by the peripheral equipment.
8. The i.mx6ull-based programmable control method according to claim 7, characterized in that said step of "connecting with an external device related to a communication related protocol" comprises the steps of:
communication connection is carried out with equipment with RS485 related protocol;
the method comprises the steps of performing communication connection with equipment with a CAN related protocol;
communication connection is carried out with equipment with USB related protocol;
the step of acquiring the related data of the peripheral through the I/O interface comprises the following steps:
the device is connected with an upper computer or equipment connected through an Ethernet;
connect with a remote I/O adapter;
connecting with the expansion I/O module;
wherein the step of "connecting with a remote I/O adapter" comprises the steps of:
connecting with a remote I/O expander to transfer upper computer data;
external sensors and related devices are connected.
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