CN110716489A - Automatic control system and method - Google Patents
Automatic control system and method Download PDFInfo
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- CN110716489A CN110716489A CN201911041537.1A CN201911041537A CN110716489A CN 110716489 A CN110716489 A CN 110716489A CN 201911041537 A CN201911041537 A CN 201911041537A CN 110716489 A CN110716489 A CN 110716489A
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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
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
Abstract
The invention discloses an automatic control system and a method, wherein the system comprises: the main control module is used for forming a main control signal; the basic IO input module is electrically connected with the main control module to send a basic input signal; the basic IO output module is electrically connected with the main control module to output the main control signal; the expansion IO input module is electrically connected to the main control module to receive the main control signal and send an expansion input signal; the expansion IO output module is electrically connected with the main control module to control the corresponding expansion output interface to output a main control signal according to the main control signal; the high-speed output module is electrically connected with the main control module to receive the main control signal and is used for supporting the output of the high-speed digital signal in the main control signal. The low-speed digital signal input and output are realized through the basic IO input module and the basic IO output module, and the expansion of the plurality of output interfaces and the input interfaces is realized through the expansion IO input module and the expansion IO output module, so that the centralized control of a plurality of loads is facilitated, the automation control is simple and easy, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of automation, in particular to an automatic control system and method.
Background
At present, the PLC, a programmable logic Controller (PLC for short), is widely used in automation in the field of industrial control. The programmable controller is modularly assembled by an internal CPU, an instruction and data memory, an input/output unit, a power module, a digital analog unit and the like. The user can edit the corresponding user program according to the requirement to meet different automatic production requirements.
But the cost is high, the benefit is not obvious, if the PLC is used for controlling in the same equipment, clamp, fixture and shielding box, the cost of the equipment is greatly increased if the requirement of multi-function coexistence is realized, and the diversity and difficulty of installation modes are also considered due to the size of the space of the equipment;
at present, the rapid update of electronic products leads to the rapid update of production equipment and test equipment which are unavailable in the production process, so that the life cycle of 2 to 3 months occurs, and the use of the PLC undoubtedly increases the production cost and the income of customers, so that the adoption of the PLC as the control of the equipment is not the optimal scheme of the current market, and the competitiveness is lost due to the cost problem. Meanwhile, input interfaces and output interfaces controlled by the PLC are limited, and a plurality of PLC controllers are needed for an automatic system driven or controlled by multiple loads, so that the automatic control cost of the system is increased, and the centralized control is not facilitated.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an automatic control system which can control a plurality of loads in a centralized manner, so that the automatic control is simple and the control cost is saved.
The invention also provides an automatic control method.
In a first aspect, an embodiment of the present invention provides an automation control system: the method comprises the following steps: the main control module is used for forming a main control signal;
the basic IO input module is electrically connected to the input end of the main control module to send a basic input signal to the main control module;
the basic IO output module is electrically connected to the output end of the main control module to receive the main control signal and output the main control signal;
the expansion IO input module is electrically connected to the main control module to receive the main control signal and send an expansion input signal to the main control module;
the expansion IO output module is connected with a plurality of output interfaces and is electrically connected to the output end of the main control module to receive the main control signal and control the corresponding expansion output interface to output the main control signal according to the main control signal;
and the high-speed output module is electrically connected with the output end of the main control module to receive the main control signal and is used for supporting the output of the high-speed digital signal in the main control signal.
The automatic control system of the embodiment of the invention at least has the following beneficial effects: the input and the output of general low-speed digital signals are realized through basic IO input and basic IO output, then the control is realized through the main control module, the automation control is simple, the input and the output requirements of a plurality of loads can be realized through the expansion IO input module and the expansion IO output module, the centralized control is convenient, only one main control module is needed, and the automation control cost is saved.
According to another embodiment of the present invention, an automatic control system further includes an extension AD input module and a plurality of AD sampling interfaces, wherein the extension AD input module is electrically connected to the main control module to receive a main control signal and control input of the corresponding AD sampling interface according to the main control signal.
According to other embodiments of the present invention, an automation control system, the extended IO input module includes:
the input interfaces are used for connecting a load to receive input signals;
the first connecting sub-module is electrically connected to the main control module to transmit a main control signal;
the first communication dial switch is electrically connected with the first connecting submodule to receive the main control signal and form a corresponding first communication link signal;
a first address dial switch for forming a first configuration address signal;
and the input IO expander is electrically connected with the first communication dial switch and the first address dial switch to receive a first communication link signal and a first configuration address signal so as to control the corresponding input interface to send an expanded input signal to the main control module.
According to another embodiment of the present invention, an automation control system, the extended IO output module includes an extended IO output transistor control module and an extended IO output relay control module, and the extended IO output transistor control module includes:
the output interfaces are used for outputting a main control signal to the load;
the second connecting sub-module is electrically connected to the main control module to transmit a main control signal;
the second communication dial switch is electrically connected with the second connecting submodule to receive the main control signal and output a second communication link signal;
a second address dial switch for forming a second configuration address signal;
an output IO extender electrically connected to the second communication dial switch and the second address dial switch to receive a second communication link signal and a second configuration address signal and output a selection signal;
and the first driving submodule is electrically connected to the output IO expander to receive a selection signal and drive the corresponding output interface to send a main control signal.
According to other embodiments of the present invention, an automated control system, the high speed output module comprises:
the first optical coupler module is electrically connected to the main control module to isolate and transmit a main control signal;
the second driving submodule is electrically connected to the first optical coupling submodule to receive a main control signal and output a second driving signal;
and the high-speed output interface is electrically connected with the second driving submodule to send a main control signal to a load according to a second driving signal.
An automation control system in accordance with further embodiments of the present invention, the extended AD input module includes:
the third connecting sub-module is electrically connected to the main control module to transmit a main control signal;
the sampling IO expander is electrically connected to the third connecting submodule to receive the main control signal and output a third communication link signal;
and the current-limiting filtering submodule is electrically connected between the sampling IO expander and the AD sampling interface so as to filter and transmit the main control signal to the main control signal.
According to another embodiment of the invention, the automated control system is characterized by further comprising a power module, a communication module and a relay output module;
the power supply module is electrically connected with the main control module and the communication module to provide power supply;
the communication module is electrically connected with the main control module to realize communication connection with the outside;
the relay output module is electrically connected with the main control module so as to output a main control signal through the relay.
According to other embodiments of the present invention, an automation control method, the main control module includes: 51 singlechip module, STM32 control module, CPLD/FPGA digital integrated circuit module.
In a second aspect, an embodiment of the present invention provides an automation control method, including:
the main control module sends a main control signal to the expansion IO input module, the expansion IO output module, the expansion A input sample module, the basic input module, the basic output module and the high-speed output module;
the expansion IO input module controls a corresponding input interface according to the main control signal to send an expansion input signal to the main control module;
the expansion IO output module selects a corresponding output interface to output a main control signal to a load according to the main control signal;
the expansion AD input module selects a corresponding AD sampling interface according to the main control module and inputs an AD sampling signal to the main control module;
the basic input module directly sends an input signal to the main control module, and the basic output module sends a main control signal to a load;
and the high-speed output module outputs the high-speed digital signals in the main control signals.
The automatic control method provided by the embodiment of the invention at least has the following beneficial effects: the expansion IO input module and the expansion IO output module control the corresponding input interface or output interface to transmit signals according to the main control signal, so that the expansion of the plurality of input interfaces and output interfaces is realized, and the normal operation speed of the main control module is not influenced.
In accordance with other embodiments of the present invention, an automated method of controlling, the primary control signal includes an I2C communication protocol,
the expansion IO input module and the expansion IO output module expand a plurality of input interfaces and output interfaces according to the I2C communication protocol.
Drawings
FIG. 1 is a block diagram of an embodiment of an automated control system in accordance with the present invention;
FIG. 2 is a schematic diagram of a main control module circuit in an embodiment of an automated control system in accordance with embodiments of the present invention;
FIG. 3 is a schematic circuit diagram of a high speed output module in an embodiment of an automated control system in accordance with embodiments of the present invention;
FIG. 4 is a schematic circuit diagram of a first opto-coupler module in an exemplary embodiment of an automated control system in accordance with an embodiment of the invention;
FIG. 5 is a schematic circuit diagram of an extended input module in an embodiment of an automated control system in accordance with embodiments of the present invention;
FIG. 6 is a schematic circuit diagram of an extended IO output module in an embodiment of an automated control system in accordance with an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of an extended AD input module in an embodiment of an automated control system in an embodiment of the invention.
Reference numerals: 100. a main control module; 200. a basic IO input module; 300. a basic IO output module; 400. an extended IO input module; 410. an input interface; 420. a first connection submodule; 430. a first communication dial switch; 440. a first address dial switch; 450. inputting an IO expander; 460. a second opto-isolator sub-module; 470. a second filtering submodule; 48. an input indication submodule; 500. an expansion IO output module; 510. an extended IO output transistor control module; 511. an output interface; 512. a second connection sub-module; 514. a second communication dial switch; 515. a second address dial switch; 516. an output IO expander; 517. a first drive submodule; 518. a third opto-isolator sub-module; 519. a third filtering submodule; 521. an output indication module; 520. an expanded IO output relay control module; 600. a high-speed output module; 610. a first optical coupler module; 611. a first current limiting unit; 612. a first acceleration driving unit; 613. a first filtering unit; 614. a first optical coupling unit; 620. a second drive submodule; 630. a high-speed output interface; 640. a first indication submodule; 650. a filtering submodule; 700. an extended AD input module; 710. a third connection sub-module; 720. sampling an IO expander; 730. a current-limiting filtering submodule; 740. a reference voltage submodule; 750. a current input interface; 760. a current sampling submodule; 761. a first sampling unit; 762. a second sampling unit; 763. a third sampling unit; 770. an amplification submodule; 780. a first sampling dial switch; 790. a second sampling dial switch; 800. an AD sampling interface; 900. a power supply module; 110. a communication module; 111. a serial communication and burning submodule; 112. USB communication and power supply module; 113. a network switching port communication submodule; 120. and a relay output module.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Referring to fig. 1, there is shown an automated control system disclosed in an embodiment of the present invention, including: the power module 900, the communication module 110, the relay output module 120, the main control module 100, the basic IO input module 200, the basic IO output module 300, the extended IO input module 400, the extended IO output module 500, and the high-speed output module 600. The power module 900 is used to provide stable and different power requirements for the entire system so that the entire system operates normally. The communication module 110 is electrically connected to the main control module 100 to realize communication between the main control module 100 and other devices. The main control module 100 is used for forming a main control signal; the basic IO input module 200 is electrically connected to an input end of the main control module 100 to send a basic input signal to the main control module 100; a basic IO output module 300 electrically connected to an output terminal of the main control module 100 to receive the main control signal and output the main control signal; the expansion IO input module 400 is electrically connected to the main control module 100 to receive the main control signal and send an expansion input signal to the main control module 100; the expansion IO output module 500, the expansion IO output module 500 is connected with a plurality of output interfaces 511, the expansion IO output module 500 is electrically connected to the output end of the main control module 100 to receive the main control signal and control the corresponding expansion output interface 511 to output the main control signal according to the main control signal; the high-speed output module 600 is electrically connected to an output terminal of the main control module 100 to receive the main control signal and support high-speed output of the main control signal. The relay output module 120 is electrically connected to the main control module 100 to output a main control signal through a relay. The main control module 100 outputs a main control signal to control the load to drive or execute corresponding operations, and the extended IO input module 400 and the extended IO output module 500 are arranged to facilitate control of multiple loads, so as to perform centralized processing and control, thereby not only meeting the requirement of automatic production, but also controlling multiple loads to save production cost.
The power module 900 receives a dc power supply, performs high-low frequency filtering processing, and finally outputs a 12V power supply, a 5V power supply, and a 3.3V power supply to meet the power requirements of different modules. The communication module 110 includes: the serial communication and burning submodule 111 supports both serial communication and off-line burning of software, can flexibly and automatically select a triggering burning mode by matching with burning software on line, can enter the burning mode by power-off restarting, and can automatically enter the running mode until the completion so that the main control module 100 can burn programs in the running process. The USB communication and power supply module 112 can supply power to the whole system through the USB parasitic power source, and when the power module 900 inputs and recovers power supply, the system can be switched continuously and seamlessly, and the work of the main control module 100 is never affected, so that the USB communication and power supply module 112 can switch the serial communication to the serial communication through the USB and supply power to the whole system, and the power module 900 can provide power through the USB serial port when it fails. The network switching port expansion submodule can support TCP/IP communication so as to increase the expansion quantity of slave equipment of the automatic control system without being limited by hardware and without additionally increasing a conversion module.
The basic IO input module 200 mainly supports 20-channel low-speed digital signal input, and the basic IO input module 200 is connected with an input optical coupling isolation circuit and an input filter circuit, so that signal interference of an external load can be effectively avoided through the input optical coupling isolation circuit and the input filter circuit. The basic IO output module 300 is used for supporting transistor output of 8 paths of low-speed digital signals, the basic IO output module 300 is connected with an output optical coupling isolation circuit and an output filtering current source, signal interference of an external load can be effectively avoided through the output isolation circuit and the output filtering circuit, and the basic IO output module 300 supports that the maximum load current is 30A and the maximum load voltage is 60V. The relay output module 120 also supports 8-way relay control output, and the relay output module 120 controls the output of the main control signal through the normally open and normally closed control modes of the relay.
Referring to fig. 1 and 2, the main control module 100 may be a 51-chip microcomputer module, an STM32 control module, or a CPLD/FPGA digital integrated circuit module, in this embodiment, the main control module is an STM31 control module, the model of the main control module 100 is an STM32F103 series chip microcomputer, the main control module 100 includes a reset circuit, a digital storage circuit, and a run-time system, and the module is mainly used for control and calculation, and data processing, and is a core control module. The scheme of the control panel of the STM32F103 series single chip microcomputer is mainly applied to complex control requirements, low in cost, flexible and stable in running hardware environment, can well meet the requirements of nonstandard automatic testing, control, data acquisition and the like, and has the advantages of compatibility with common communication interfaces and strong expansibility.
Example two: referring to fig. 1 and 3, the high-speed output module 600 mainly supports transistor output of 4-channel high-speed digital signals, and the speed can reach 50M or, at the same time, the high-speed output module 600 outputs the maximum load voltage of 60V at low speed and the maximum load current of 30A at low speed. The high-speed output module 600 includes: a first optical coupling sub-module 610, a second driving sub-module 620 and a high-speed output interface 630. The first optical coupling sub-module 610 is electrically connected to the main control module 100 to isolate and transmit a main control signal, the second driving sub-module 620 is electrically connected to the first optical coupling sub-module 610 to receive the main control signal and output a second driving signal, and the high-speed output interface 630 is electrically connected to the second driving sub-module 620 to transmit the main control signal to a load according to the second driving signal. The redundant signals of the main control signal are isolated by the first optical coupling submodule 610 and the second driving submodule 620, and then the driving signal is sent to the load through the high-speed output interface 630, so that the load is controlled to respond quickly and the output control capability is increased, more large loads can be controlled and driven through the main control module 100, and the high-speed digital signal in the main control signal is easy to output and control. The high-speed output module 600 further includes a first filtering sub-module electrically connected to the second driving sub-module 620 and the high-speed output interface 630 to filter out interference signals in the main control signal, so that the main control signal is clean and stable through the signal of the second driving module, thereby making the control of the load more accurate.
The high-speed output module 600 further includes a first indication sub-module 640, wherein the first indication sub-module 640 is electrically connected to the second driving sub-module 620 to receive the driving signal and output an indication signal, and the first indication sub-module 640 outputs a corresponding indication signal, so that an operator can know the current driving state, and a maintenance worker can quickly find a problem.
The high-speed output module further includes a filtering sub-module 650, and the filtering module 650 is electrically connected to the second driving sub-module 620 and the high-speed output interface 630 to filter out interference signals in the main control signal, so that the signal of the main control signal passing through the second driving sub-module 620 is clean and stable, thereby making the control of the load more accurate.
Referring to fig. 1 and 4, a plurality of first optical coupling modules 610 are provided, and each of the first optical coupling modules 610 includes: the first current limiting unit 611 is electrically connected to the first optical coupling unit 614 to limit current of the first optical coupling unit 614, the first accelerating driving unit 612 is electrically connected to the first optical coupling unit 614 to increase driving capability of a connection end of the main control module 100 and the first optical coupling unit 614, and the first filtering unit 613 is electrically connected to the first optical coupling unit 614 to filter an interference signal in the main control signal. The first current limiting unit 611 mainly plays a role in limiting current for the first optical coupler unit 614, the first accelerating driving unit 612 is mainly used for increasing driving capability and quick response capability of a connection port between the main control module 100 and the first optical coupler unit 614, and the first filtering unit 613 is mainly used for filtering an interference signal input to the first optical coupler unit 614 to increase anti-interference capability and capability of the first optical coupler unit 614, so that the main control module 100 can control a load more stably. Interference signals between the main control module 100 and the load can be effectively isolated by the first current limiting unit 611, the first acceleration driving unit 612, the first filtering unit 613 and the first optical coupling unit 614.
Example three: referring to fig. 1 and 5, the extended IO input module 400 is extended upward in a manner of an I2C communication protocol, a single layer supports extended 24-way low-speed signal input, and 16 layers can be overlapped upward at maximum by selectively setting a corresponding address in a dial mode. The extended IO input module 400 includes: the interface module comprises a plurality of input interfaces 410, a first connection submodule 420, a first communication dial switch 430, a first address dial switch 440 and an input IO expander 450, wherein the plurality of input interfaces 410 are used for connecting loads to receive input signals, and the first connection submodule 420 is electrically connected to the main control module 100 to transmit main control signals; a first communication dial switch 430 electrically connected to the first connection sub-module 420 for receiving the main control signal and forming a corresponding first communication link signal; the first address dial switch 440 is used to form a first configuration address signal; the input IO expander 450 is electrically connected to the first communication dial switch 430 and the first address dial switch 440 for receiving the first communication link signal and the first configuration address signal to control the corresponding input interface 410 to send the expanded input signal to the main control module 100
The main control module 100 outputs a main control signal to control the first communication dial switch 430 and the first address dial switch 440 to form a first communication link signal and a first configuration address signal, and then controls the input IO expander 450 to transmit an input signal corresponding to the input interface 410 to the main control module 100, so as to implement a multi-channel input channel to complete the rapid expansion of the IO input.
The IO extension input module further comprises: the second optical coupling isolation submodule 460 is electrically connected between the input interface 410 and the input IO expander 450, the second optical coupling isolation submodule 460 is used for isolating the sword pulse signal in the input signal, and the sword pulse signal in the input signal is isolated by the second optical coupling isolation submodule 460 to prevent the sword pulse signal from damaging the main board. The second filtering sub-module 470 is electrically connected between the input interface 410 and the bus bar of the motherboard to filter the noise signal in the input signal, so as to reduce the interference of the noise signal to the motherboard. The input indication submodule 48 is electrically connected between the first connection submodule 420 and the second optical coupling isolation submodule 460, and the input indication submodule 48 is configured to indicate which input signal of the input interface 410 is transmitted to the motherboard, so that an operator can directly check which input signal of the input interface 410 is transmitted to the motherboard.
Example four: referring to fig. 1 and 6, the extended IO output module 500 includes: the expanded IO output transistor control module 510 and the expanded IO output relay control module 520 are mainly expanded upwards in an I2C communication protocol mode, 24 low-speed signal input is supported by a single layer, corresponding addresses are set in a dial mode, 16 layers can be overlapped upwards to the maximum extent, and therefore control and driving of 256 loads or output signals can be achieved by one layer.
The extended IO output transistor control module 510 includes: the extended IO output transistor control module 510 includes: the plurality of output interfaces 511, a second connection submodule 512, a second communication dial switch 514, a second address dial switch 515, an output IO expander 516 and a first driving submodule 517, wherein the plurality of output interfaces 511 are used for outputting a main control signal to a load; the second connection sub-module 512 is electrically connected to the main control module 100 for transmitting the main control signal; the second communication dial switch 514 is electrically connected to the second connection sub-module 512 to receive the main control signal and output a second communication link signal; a second address toggle 515 for forming a second configuration address signal; the output IO extender 516 is electrically connected to the second communication dial switch 514 and the second address dial switch 515 to receive the second communication link signal and the second configuration address signal and output a selection signal; the first driving submodule 517 is electrically connected to the output IO expander 516 to receive the selection signal and drive the corresponding output interface 511 to send the main control signal. The preset program is set through the main control module 100, and the corresponding output interfaces 511 can be selected one by one according to the preset program to send the main control signal, so that a plurality of output extensions can be realized, the operation efficiency of the main control module 100 is not affected, and a plurality of peripheral devices can be controlled on one main control module 100 in a centralized manner.
The expanded IO output transistor control module 510 further includes a third optical coupling isolation submodule 518, a third filtering submodule 519 and an output indication module 521, the third optical coupling isolation submodule 518 is electrically connected between the output IO expander 516 and the third driving submodule to isolate a xipho pulse signal in a main control signal sent by the main control module 100, the third filtering submodule 519 is electrically connected between the third optical coupling isolation submodule 518 and the third driving submodule to filter a high frequency pulse signal in the main control signal sent by the main control module 100, the output indication module 521 is electrically connected to the third driving submodule to receive the third driving signal and output an indication signal, the xipho pulse signal of the main control signal is isolated by the third optical coupling isolation submodule 518, the third filtering submodule 519 filters the high frequency pulse signal in the control signal to ensure that the main control signal output to peripheral equipment is clean, And (4) the product is stable.
In summary, the preset program signal in the main control signal controls the second communication dial switches 514 and the second address dial switches 515 to select the corresponding communication link signal and the corresponding configuration address signal, the output IO extender 516 forms the corresponding selection signal according to the communication link signal and the configuration address signal, and the third driving sub-module drives the corresponding output interface 511 to start according to the selection signal, so that the main control signal output by different output interfaces 511 can be realized through the preset program, so as to realize multiple output extensions, and realize the centralized control of the whole system.
The expanded IO output relay control module 520 is expanded upwards in an I2C communication protocol mode, a single layer supports expanded 1-path low-speed signal relay output, and a single path supports a C0M point, an N0 point and an NC point; the extended IO output relay control module 520 selects and sets a corresponding address in a dial mode, and 16 layers can be overlapped upwards at maximum.
Example five: referring to fig. 1 and 7, the extended AD input module 700 is extended upward in an ISP communication protocol manner, and supports 8-channel voltage signal acquisition and current signal acquisition by using 24-bit AD, and the acquisition precision is 1uA ± 5%. The extended AD input module 700 includes: the third connection submodule 710, the sampling IO expander 720 and the current limiting filter submodule 730, wherein the third connection submodule 710 is electrically connected to the main control module 100 to transmit a main control signal; the sampling IO expander 720 is electrically connected to the third connection sub-module 710 to receive the main control signal and output a third communication link signal; the current-limiting filter submodule 730 is electrically connected between the sampling IO extender 720 and the AD sampling interface 800 to filter the main control signal and transmit the filtered main control signal to the main control module 100.
The main control signal includes load control signal and IO extension control signal, IO extension signal mainly used sends to sampling IO extender 720 and selects corresponding protocol channel with control sampling IO extender 720, then control corresponding AD sampling interface 800 and pass through current-limiting filter submodule 730, sampling IO extender 720, third connection submodule 710 sends to main control module 100, so IO extension control signal in the main control signal sends to sampling IO extender 720, sampling IO extender 720 selects corresponding protocol channel, then this AD sampling interface 800's sampling signal sends to main control module 100 through this protocol channel.
The extended AD input module 700 further includes a reference voltage submodule 740, a current input interface 750, a current sampling submodule 760, an amplification submodule 770, a first sampling dial switch 780, and a second sampling dial switch 790. The reference voltage submodule 740 is electrically connected to the sampling IO extender 720 and the current sampling submodule 760 to output a reference voltage to the sampling IO extender 720 and the current sampling submodule 760, the current sampling submodule 760 is electrically connected to the current input interface 750 and is used for collecting a current signal, and the AD sampling interface 800 mainly collects a voltage signal, so that the current signal and the voltage signal are collected, so that the main control module 100 can perform corresponding control on the sampling signal more accurately. The amplification submodule 770 is electrically connected to the current sampling submodule 760 to receive a current signal and output an amplified signal, the first sampling dial switch 780 is electrically connected to the current sampling submodule 760 to receive and transmit the current signal, the second sampling dial switch 790 is electrically connected to the current sampling submodule 760, the amplification submodule 770 and the sampling IO extender 720, the second sampling dial switch 790 selects a corresponding current signal to be transmitted to the main control module 100 along the sampling IO extender 720 according to the current signal sent by the first sampling dial switch 780, the amplified signal sent by the amplification dial block and the circuit signal sent by the current sampling submodule 760 and transmits the selected current signal to the sampling IO extender 720, and thus the acquisition of multiple paths of current signals is realized.
The extended AD input module 700 further includes a regulated power supply sub-module that is mainly used to supply power to each module to ensure that each module can be used normally and stably.
The reference voltage sub-module 740 includes a reference voltage unit electrically connected to the sampling IO extender 720 and the current sampling sub-module 760 to provide a reference voltage signal to the sampling IO extender 720 and the current sampling sub-module 760, and a buffer isolation unit electrically connected to the reference voltage unit to buffer and isolate the reference voltage signal. The reference voltage unit mainly provides the reference voltage of the whole device, and the reference voltage is also the reference voltage. Because the precision of the AD sampling mainly depends on the precision of the AD sampling chip, the sensitivity of the sensor, the precision of the amplification sub-module 770, the precision of the power supply, and the precision of the reference voltage sub-module 740, the precision of the whole AD sampling is not only related to the precision of the AD sampling chip, but also has a great relationship with the precision of the power supply voltage, the reference voltage during the AD conversion is the standard voltage of the internal T-row network, the reference voltage can be regarded as the highest upper limit voltage (not exceeding the power supply voltage), and when the signal voltage is lower, the reference voltage can be reduced to improve the resolution. After the reference voltage is changed, the voltage values of the same binary representation will be different, the largest binary representation is the reference voltage, the reference voltage needs to be taken into consideration when calculating the actual voltage, and the reference voltage sent by the reference voltage submodule 740 is the reference voltage, so the stability of the reference voltage has a great influence on the performance of the device.
The current sampling sub-module 760 includes: the current sampling circuit comprises a first sampling unit 761, a second sampling unit 762 and a third sampling unit 763, wherein the input end of the first sampling unit 761 is connected to the current input interface 750, the output end of the first sampling unit 761 is connected to the input end of a first sampling dial switch 780, the input end of the second sampling unit 762 is electrically connected to the current input interface 750, and the output end of the second sampling unit 762 is electrically connected to the input end of the first sampling dial switch 780; an input terminal of the third sampling unit 763 is electrically connected to the current input interface 750, and an output terminal of the third sampling unit 763 is connected to an input terminal of the second sampling dial switch 790. The corresponding current signals are collected by the first sampling unit 761, the second sampling unit 762 and the third sampling unit 763, and then mutually adjusted by the first sampling dial switch 780 and the second sampling dial switch 790, so that after the sampling IO extender 720 selects the corresponding protocol channel, the corresponding sampling unit is controlled to output the current signal. For example, the first sampling dial switch 780 outputs one of the current signals when the current signal is selected for transmission, and the second sampling dial switch 790 selects the current signal from the current signal and the current signal sent by the third sampling unit 763, so as to transmit one of the current signals to the main control module 100, so that three current signals are selected through the two dial switches, and the three channels of the current signal are expanded, so as to collect more current signals.
Example six: the embodiment of the invention discloses an automatic control method, which comprises the following steps:
the main control module sends a main control signal to the expansion IO input module, the expansion IO output module, the expansion AD input module, the basic output module and the high-speed output module; the primary control signals include the I2C communication protocol,
the expansion IO input module and the expansion IO output module expand a plurality of input interfaces and output interfaces according to the I2C communication protocol.
The expansion IO input module controls the corresponding input interface according to the main control signal and sends the expansion input signal to the main control module; the expansion IO input module adopts an I2C communication protocol mode to enable an input IO expander to be connected with the main control module, different access links are selected through the first communication dial switch to determine a protocol channel, then the first address dial switch selects and configures the address of the input IO expander, and multiple input channels can be rapidly configured through different configuration addresses and communication link channels.
The expansion IO output module selects the corresponding output interface to output the main control signal to the load according to the main control signal, and the mode of expanding the input interface of the expansion IO output module is also the mode of expanding the input interface of the expansion IO output module to realize the expansion of the output interface so as to meet the requirement of more load output control.
The extension AD input module selects a corresponding AD sampling interface to input an AD sampling signal to the master control module according to the master control module, the extension AD input module mainly adopts an SPI communication protocol mode to enable the sampling IO expander to be connected with the master control module, and a protocol channel of the extension AD input module is determined through an output port of the master control module, so that the extension of an 8-channel AD sampling interface is realized.
The basic input module directly sends the input signal to the main control module, the basic output module sends the main control signal to the load, and the input and output of the low-speed digital signal are realized through the basic input module and the basic output module.
The high-speed output module outputs the high-speed digital signals in the main control signals, and the high-speed output module can realize the quick output of the high-speed digital signals in the main control signals so as to drive a high-power load.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. An automated control system, comprising:
the main control module is used for forming a main control signal;
the basic IO input module is electrically connected to the input end of the main control module to send a basic input signal to the main control module;
the basic IO output module is electrically connected to the output end of the main control module to receive the main control signal and output the main control signal;
the expansion IO input module is electrically connected to the main control module to receive the main control signal and send an expansion input signal to the main control module;
the expansion IO output module is connected with a plurality of output interfaces and is electrically connected to the output end of the main control module to receive the main control signal and control the corresponding expansion output interface to output the main control signal according to the main control signal;
and the high-speed output module is electrically connected with the output end of the main control module to receive the main control signal and is used for supporting the output of the high-speed digital signal in the main control signal.
2. The automated control system according to claim 1, further comprising an extended AD input module and a plurality of AD sampling interfaces, wherein the extended AD input module is electrically connected to the main control module for receiving the main control signal and controlling the corresponding AD sampling interface input according to the main control signal.
3. An automated control system according to any of claims 1 or 2, wherein the extended IO input module comprises:
the input interfaces are used for connecting a load to receive input signals;
the first connecting sub-module is electrically connected to the main control module to transmit a main control signal;
the first communication dial switch is electrically connected with the first connecting submodule to receive the main control signal and form a corresponding first communication link signal;
a first address dial switch for forming a first configuration address signal;
and the input IO expander is electrically connected with the first communication dial switch and the first address dial switch to receive a first communication link signal and a first configuration address signal so as to control the corresponding input interface to send an expanded input signal to the main control module.
4. The automated control system of any of claims 1 or 2, wherein the extended IO output module comprises an extended IO output transistor control module and an extended IO output relay control module, the extended IO output transistor control module comprising:
the output interfaces are used for outputting a main control signal to the load;
the second connecting sub-module is electrically connected to the main control module to transmit a main control signal;
the second communication dial switch is electrically connected with the second connecting submodule to receive the main control signal and output a second communication link signal;
a second address dial switch for forming a second configuration address signal;
an output IO extender electrically connected to the second communication dial switch and the second address dial switch to receive a second communication link signal and a second configuration address signal and output a selection signal;
and the first driving submodule is electrically connected to the output IO expander to receive a selection signal and drive the corresponding output interface to send a main control signal.
5. An automated control system according to claim 1 or 2, wherein the high speed output module comprises:
the first optical coupler module is electrically connected to the main control module to isolate and transmit a main control signal;
the second driving submodule is electrically connected to the first optical coupling submodule to receive a main control signal and output a second driving signal;
and the high-speed output interface is electrically connected with the second driving submodule to send a main control signal to a load according to a second driving signal.
6. The automation control system of claim 2, wherein said extended AD input module comprises:
the third connecting sub-module is electrically connected to the main control module to transmit a main control signal;
the sampling IO expander is electrically connected to the third connecting submodule to receive the main control signal and output a third communication link signal;
and the current-limiting filtering submodule is electrically connected between the sampling IO expander and the AD sampling interface so as to filter and transmit the main control signal to the main control signal.
7. The automated control system of claim 1 or 2, further comprising a power module, a communication module, a relay output module;
the power supply module is electrically connected with the main control module and the communication module to provide power supply;
the communication module is electrically connected with the main control module to realize communication connection with the outside;
the relay output module is electrically connected with the main control module so as to output a main control signal through the relay.
8. The automated control system of claim 1, wherein the master control module comprises: 51 singlechip module, STM32 control module, CPLD/FPGA digital integrated circuit module.
9. An automated control method, comprising:
the main control module sends a main control signal to the expansion IO input module, the expansion IO output module, the expansion A input sample module, the basic input module, the basic output module and the high-speed output module;
the expansion IO input module controls a corresponding input interface according to the main control signal to send an expansion input signal to the main control module;
the expansion IO output module selects a corresponding output interface to output a main control signal to a load according to the main control signal;
the expansion AD input module selects a corresponding AD sampling interface according to the main control module and inputs an AD sampling signal to the main control module;
the basic input module directly sends an input signal to the main control module, and the basic output module sends a main control signal to a load;
and the high-speed output module outputs the high-speed digital signals in the main control signals.
10. The automation control method of claim 9, wherein the master control signal includes an I2C communication protocol,
the expansion IO input module and the expansion IO output module expand a plurality of input interfaces and output interfaces according to the I2C communication protocol.
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