CN114594719A - 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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- CN114594719A CN114594719A CN202011425714.9A CN202011425714A CN114594719A CN 114594719 A CN114594719 A CN 114594719A CN 202011425714 A CN202011425714 A CN 202011425714A CN 114594719 A CN114594719 A CN 114594719A
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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]
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Abstract
The invention discloses a programmable control system and a method based on i.MX6ULL, which comprises a control module, a connection module and an electric module, wherein the control module, the connection module and the electric module are mutually connected in a communication way; the connection module is used for connecting and communicating with external equipment; the electrical module is used for controlling external electrical equipment and receiving feedback information; the control module includes: the control unit is used for controlling the system to work according to the program; and the i.MX6ULL development unit is used for writing and developing the program through the i.MX6ULL. Through the combination of the control module, the connecting module and the electric module, the connection between the control module and the electric structure is increased, so that hardware circuits are reduced, the overall stability of the system can be further improved along with the reduction of the hardware circuits, the equipment volume and the cost are reduced, and the unified standard PLC control structure can be realized.
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 common control device used today and can perform almost all tasks in the field of industrial control. In fact, the realized PLC has strong processing capacity to analog quantity. Therefore, in most industrial control systems, the PLC has replaced an industrial control computer (IPC) as a master controller to complete complex industrial automatic control tasks.
The emergence of the PLC soon shows its important position in industrial control, and countries such as japan, germany, france, etc. have also developed respective PLCs one after another. Since the advent of the PLC, the PLC has been one of important industries in industrially developed countries such as the united states, the germany, the japanese, and the law through the recent 40 years of development. The total sale of the world is continuously increased, manufacturers are continuously emerging, and the varieties are continuously renewed. The yield and the output value are greatly increased, and the price is continuously reduced.
The production and management of industrial products are realized by PLC technology control and computer control for a long time, and the two high-efficiency control methods lay a solid foundation for the high-speed development of industrialization in China and are two advanced technologies which are widely applied and popularized in China. The PLC technology is applied to all links of industrial production in China since the coming out of the world, has the characteristics of small volume, convenient use, strong processing capacity and the like, and is gradually the core content of industrial production and control in China. However, the internal structure systems of the conventional PLC devices are closed, and different hardware systems of the PLC devices among manufacturers are different, so that the PLC devices often have different actual application effects due to different manufacturers in the actual application process, and a user must select a control procedure corresponding to a PLC technology to operate after selecting the PLC technology, so that the stable operation of the PLC technology can be effectively realized, and the safety and reasonability of industrial production can be ensured. In recent years, with the continuous development of the overall economy of China, the development and innovation of domestic industrial automation are gradually improved, and the scale of an automatic control system is increased in the actual application process, so that the situation of unreasonable control in an enterprise occurs, the actual operation and development of the enterprise are seriously influenced, and the operation cost of the enterprise is increased. Meanwhile, in the process of system improvement of the automatic control system, the communication capacity of the enterprise needs to be ensured, so that the enterprise can correctly know information and data in the production process by relying on the communication capacity, the industrial production method can be flexibly selected, and the scheme can be timely adjusted under the actual influence of market conditions. In addition, in the process of actually applying the PLC technology, in order to increase the operating efficiency of the control function in the system, many emerging PLC sensors are installed with control units, but these control units are difficult to connect with the PLC device, so that the development of industrial production and automation construction is in a slow trend, and the control units gradually become important technical problems to be solved in the field of industrial automation.
Disclosure of Invention
The invention aims to provide an i.MX6ULL-based programmable control system and a method, which are used for solving the problem that PLC equipment often has different practical application effects in the practical application process due to the fact that internal structural systems are closed and hardware systems are different in the prior art.
The invention provides an i.MX6ULL-based programmable control system, which comprises a control module, a connecting module and an electric module, wherein the connecting module can be connected to the control module in a communication way; the connection module is used for connecting and communicating with external equipment; the electrical module is used for controlling external electrical equipment, receiving feedback information and transmitting data to the connection module; the control module receives the data transmitted by the electric module through the connecting module and controls the work of the system based on the data transmitted by the connecting 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; the i.MX6ULL development unit writes and develops a program based on data transmitted by the connection module.
In an embodiment of the present invention, the connection module includes a communication unit and an interface unit that are communicably connected, wherein the communication unit is configured 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 invention, the communication unit comprises an RS485 communication subunit, a CAN communication subunit and a USB communication subunit which are communicably connected with each other, wherein the RS485 communication subunit is used for performing 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 an embodiment of the present invention, the interface unit includes an ethernet interface, an EtherCAT interface, and a backplane bus interface, which are communicably connected to each other; the Ethernet interface is used for being connected 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 present invention, the control module further includes a power supply unit and a status indicator light conductively connected to the power supply unit, wherein the power supply unit is configured to supply 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 communicably 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 relevant data of the peripheral equipment through an 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 upper computer data; the extended I/O is used for connecting external sensors and related equipment.
The invention also provides a programmable control method based on i.MX6ULL, which comprises the following steps: s1, writing and developing programs 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 according to the feedback information; if yes, the operation is normal; if not, the process returns to step S1, and the program is written and developed twice through 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 relevant data of the peripheral equipment through an I/O interface; HMI communication with an external device; and processing the control instructions issued by the i.MX6ULL development unit and the control unit and uploading feedback signals fed back by peripheral equipment.
In an embodiment of the present invention, the step of "connecting to an external device related to a communication-related protocol" includes the steps of: the device is in communication connection with the device with the RS485 related protocol; carrying out communication connection with equipment with CAN related protocol; carrying out communication connection with equipment with a USB related protocol; the step of acquiring the relevant data of the peripheral equipment through the I/O interface comprises the following steps: connecting with an upper computer or equipment connected through an Ethernet; connecting with a remote I/O adapter; the expansion I/O module is connected; wherein the step of "connecting with a remote I/O adapter" comprises the steps of: connecting a remote I/O expander to transmit upper computer data; and connecting an external sensor and related equipment.
The programmable control system and the method based on i.MX6ULL have the following advantages:
through the combination of the control module, the connecting module and the electric module, the connection between the control module and the electric structure is increased, so that hardware circuits are reduced, the overall stability of the system can be further improved along with the reduction of the hardware circuits, the equipment volume and the cost are reduced, and the unified standard PLC control structure can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a block diagram of the structure of the i.mx6ull-based programmable control system of the present invention.
Fig. 2 is a schematic flow block diagram of the i.mx6ull-based programmable control method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1, fig. 1 is a schematic block diagram of the i.mx6ull-based programmable control system of the present invention. The invention provides an i.MX6ULL-based programmable control system, which comprises a control module, a connecting module and an electrical module, wherein the control module, the connecting module and the electrical module are mutually connected in a communication manner; the connection module is used for connecting and communicating with external equipment; the electrical module is used for controlling external electrical equipment and receiving feedback information; the control module includes: the control unit is used for controlling the system to work according to the program; and the i.MX6ULL development unit is used for writing and developing the program through the i.MX6ULL. The programmable structure taking i.MX6ULL as the core has the advantages of simple hardware circuit, rich interfaces, various expanding structures, low cost, small size and high development degree. The i.MX6ULL development unit can generally adopt an i.MX6ULL core board, the core board adopts an eight-layer board design in design, the bottom board adopts a four-layer board design, the core board ensures a complete ground layer and a shielding layer of an intermediate signal by using 8 layers of boards, so that the whole core board has excellent performance in EMC and model integrity, and the core board adopts a packaging form of metal shell shielding, so that the EMS performance and the EMI performance of the core board are further improved.
In one embodiment, the connection module comprises: 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 RS485 related protocols; 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 the equipment with the USB related protocol. Preferably, the interface unit includes: the Ethernet interface is used for connecting with an upper computer or equipment connected through Ethernet; the EtherCAT interface is used for connecting with the remote I/O adapter; and the backboard bus interface is used for being connected with the expansion I/O module.
In this embodiment, it can be said that the RS485 processing is designed according to an industrial-grade circuit design standard, and a high-voltage isolation power supply is used, so that an isolation voltage reaches 1500V, thereby effectively avoiding a problem of a communication fault caused by an excessive voltage difference to ground in a communication connection process of the device. Meanwhile, the USB adopts an ESD protection scheme and an overcurrent protection measure, and a 47uF tantalum capacitor is used in a power output part, so that the influence of the USB equipment on a power supply is reduced.
In another embodiment, the control module further comprises: a power supply unit for supplying power to the control module, the connection module and the electrical module; the power supply unit can also be used for reducing the voltage of an input power supply, supplying power to the i.MX6ULL development unit and related components, and supplying power to the control unit, the I/O unit and the like, wherein the power supply unit is 24V input. And the state indicator light is used for displaying the working state of the control module. In the embodiment, the integrally formed inductor is used, so that the magnetic leakage and the electromagnetic radiation of the inductor are effectively prevented.
Typically, the electrical module comprises: the processing unit is used for processing the 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 relevant data of the peripheral equipment 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 the remote I/O expander and transmitting the data of the upper computer; extended I/O: the device is used for connecting external sensors and related equipment, and when the device is specifically set, the number of the extended I/O can be increased or decreased correspondingly according to requirements so as to meet the requirement of connecting peripheral equipment.
As shown in fig. 2, fig. 2 is a schematic flow chart of the i.mx6ull-based programmable control method of the present invention. The invention also provides a programmable control method based on i.MX6ULL, which comprises the following steps: s1, writing and developing programs 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 according to the feedback information; if yes, the operation is normal; if not, the process returns to step S1, and the program is written and developed secondarily through i.mx6ull. The i.MX6ULL development unit can generally adopt an i.MX6ULL core board, the core board adopts an eight-board design in design, the bottom board adopts a four-board design, and the core board ensures a complete ground layer and a shielding layer of an intermediate signal by using 8 boards, so that the whole core board has excellent EMC and model integrity, and the EMS performance and the EMI performance of the core board are further improved by adopting a packaging mode of metal shell shielding.
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 relevant data of the peripheral equipment through an I/O interface; HMI communication with an external device; and processing the control instructions issued by the i.MX6ULL development unit and the control unit and uploading feedback signals fed back by peripheral equipment.
Further, the step of "connecting with an external device related to a communication-related protocol" includes the steps of: the device is in communication connection with the device with the RS485 related protocol; carrying out communication connection with equipment with CAN related protocol; carrying out communication connection with equipment with a USB related protocol; the step of acquiring the relevant data of the peripheral equipment through the I/O interface comprises the following steps: connecting with an upper computer or equipment connected through an Ethernet; connecting with a remote I/O adapter; connecting with an expansion I/O module; wherein the step of "connecting with a remote I/O adapter" comprises the steps of: connecting a remote I/O expander to transmit upper computer data; and connecting an external sensor and related equipment. In this embodiment, it can be said that the RS485 processing is designed according to an industrial-grade circuit design standard, and a high-voltage isolation power supply is used, so that an isolation voltage reaches 1500V, thereby effectively avoiding a problem of a communication fault caused by an excessive voltage difference to ground in a communication connection process of the device. Meanwhile, the USB adopts an ESD protection scheme and an overcurrent protection measure, and a 47uF tantalum capacitor is used in a power output part, so that the influence of the USB equipment on a power supply is reduced.
According to the i.MX6ULL-based programmable control system and 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 circuits are reduced, the overall stability of the system can be further improved along with the reduction of the hardware circuits, the equipment volume and the cost are reduced, and a uniform standard PLC control structure can be realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An i.mx6ull-based programmable control system comprising a control module, a link module communicatively coupled to the control module, and an electrical module communicatively coupled to the link module;
the connection module is used for connecting and communicating with external equipment;
the electrical module is used for controlling external electrical equipment, receiving feedback information and transmitting data to the connection module;
the control module receives the data transmitted by the electric module through the connection module and controls the operation 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 the program; and
and the i.MX6ULL development unit is connected to the control unit and writes and develops a program based on the data transmitted by the connection module.
2. The i.mx6ull-based programmable control system of claim 1, wherein the connection module comprises a communicatively-connectable communication unit and an interface unit, wherein the communication unit is configured 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 of claim 2, wherein the communication unit comprises an RS485 communication subunit, a CAN communication subunit and a USB communication subunit which are communicably connected with each other, wherein the RS485 communication subunit is used for performing 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 of claim 3, wherein the interface unit comprises an Ethernet interface, an EtherCAT interface and a backplane bus interface 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 of claim 1, wherein 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 conductively connected to the power supply unit; the status indicator lamp is used for displaying the working status of the control module.
6. The i.MX6ULL-based programmable control system of claim 1, wherein the electrical module comprises a processing unit, an I/O unit and an interaction unit which are in communication connection with each other, and 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 devices; the I/O unit is used for acquiring relevant data of the peripheral equipment through an I/O interface; the interaction unit is used for carrying out HMI communication.
7. The i.mx6ull-based programmable control system of claim 6, wherein the I/O unit comprises a remote I/O adapter and an extended I/O; the remote I/O adapter is used for connecting a remote I/O expander and transmitting upper computer data; the extended I/O is used for connecting external sensors and related equipment.
8. A programmable control method based on i.mx6ull, comprising the steps of:
s1, writing and developing programs 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 according to the feedback information; if yes, the operation is normal; if not, the process returns to step S1, and the program is written and developed twice through i.mx6ull.
9. The i.mx6ull-based programmable control method of claim 8, wherein the 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 relevant data of the peripheral equipment through an I/O interface;
HMI communication with an external device;
and processing the control instructions issued by the i.MX6ULL development unit and the control unit and uploading feedback signals fed back by peripheral equipment.
10. The i.mx6ull-based programmable control method according to claim 9, wherein the step of "connecting with an external device related to a communication-related protocol" comprises the steps of:
the device is in communication connection with the device with the RS485 related protocol;
carrying out communication connection with equipment with CAN related protocol;
carrying out communication connection with equipment with a USB related protocol;
the step of acquiring the relevant data of the peripheral equipment through the I/O interface comprises the following steps:
connecting with an upper computer or equipment connected through an Ethernet;
connecting with a remote I/O adapter;
connecting with an expansion I/O module;
wherein said step of "connecting to a remote I/O adapter" comprises the steps of:
connecting a remote I/O expander to transmit upper computer data;
and connecting an external sensor and related equipment.
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