CN112987627B - Multi-protocol embedded blower controller and control system thereof - Google Patents
Multi-protocol embedded blower controller and control system thereof Download PDFInfo
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- CN112987627B CN112987627B CN202110503352.9A CN202110503352A CN112987627B CN 112987627 B CN112987627 B CN 112987627B CN 202110503352 A CN202110503352 A CN 202110503352A CN 112987627 B CN112987627 B CN 112987627B
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- 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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention provides a multi-protocol embedded blower controller and a control system thereof, which relate to the technical field of equipment control and comprise the following steps: the system comprises an MCU chip, a system communication interface, a user communication interface and a user communication interface, wherein the user communication interface is used for sending an initial message sent by the main control equipment to the MCU chip and forwarding a first response message sent by the MCU chip to the main control equipment, and the initial message is one or more messages in multi-protocol messages; the system communication interface is used for sending the target message sent by the target equipment and sending the second response message to the target equipment; and the MCU chip is used for analyzing the initial message and/or the target message to obtain an analyzed message, and generating a first response message and/or a second response message based on the analyzed message, so that the technical problem of poor applicability of the conventional PLC magnetic suspension blower control system is solved.
Description
Technical Field
The invention relates to the technical field of equipment control, in particular to a multi-protocol embedded blower controller and a control system thereof.
Background
In the prior art, generally, a magnetic suspension blower control system is controlled by a PLC, but corresponding modules need to be purchased by the PLC to realize different communication protocols, so that the control systems of different communication protocols cannot be used interchangeably, and if a user upgrades or modifies a program of the communication module and the CPU module of the control system, which needs to be replaced, the magnetic suspension blower control system has poor universality and interchangeability.
No effective solution has been proposed to the above problems.
Disclosure of Invention
In view of this, the present invention provides a multi-protocol embedded blower controller and a control system thereof, so as to alleviate the technical problem of poor applicability of the existing PLC magnetic suspension blower control system.
In a first aspect, an embodiment of the present invention provides a multi-protocol embedded blower controller, including: MCU chip, system communication interface and user communication interface, wherein, the MCU chip respectively with system communication interface and user communication interface are connected, system communication interface is connected with target device, target device includes: the system comprises a frequency converter of the magnetic suspension blower, a magnetic bearing controller of the magnetic suspension blower and a display screen, wherein a user communication interface is connected with a main control device; the user communication interface is used for sending an initial message sent by the main control device to the MCU chip and forwarding a first response message sent by the MCU chip to the main control device, wherein the initial message is one or more messages in a multi-protocol message; the system communication interface is used for sending a target message sent by the target equipment and sending a second response message to the target equipment; the MCU chip is used for analyzing the initial message and/or the target message to obtain an analyzed message, and generating the first response message and/or the second response message based on the analyzed message.
Further, the system communication interface comprises: the magnetic suspension air blower comprises a first RJ45 interface and a first DB9 interface, wherein the first RJ45 interface is respectively connected with the display screen and the MCU chip, and the first DB9 interface is respectively connected with a frequency converter of the magnetic suspension air blower, a magnetic bearing controller of the magnetic suspension air blower and the MCU chip; the first RJ45 interface is configured to forward a siemens s7 and/or a TCPModbus protocol initial message sent by the display screen to the MCU chip, and forward a siemens s7 and/or a TCPModbus protocol reply message sent by the MCU chip to the display screen; the first DB9 interface is used for forming an RS485 network with a frequency converter of the magnetic suspension blower and a magnetic bearing controller of the magnetic suspension blower.
Further, the user communication interface includes: a second RJ45 interface, a third RJ45 interface, a second DB9 interface and a third DB9 interface, wherein the third RJ45 interface is connected with the MCU chip through a PN protocol chip, and the third DB9 interface is connected with the MCU chip through a DP protocol chip; the second RJ45 interface is configured to forward a siemens 7 and/or a TCPModbus protocol initial packet sent by the master control device to the MCU chip, and forward a siemens 7 and/or a TCPModbus protocol reply packet sent by the MCU chip to the master control device; the third RJ45 interface is configured to forward the Profinet protocol initial packet sent by the main control device to the MCU chip, and forward the Profinet protocol response packet sent by the MCU chip to the main control device; the second DB9 interface is configured to forward the ModburRTU protocol initial packet sent by the main control device to the MCU chip, and forward the ModburRTU protocol reply packet sent by the MCU chip to the main control device; the third DB9 interface is configured to forward the profibus dp protocol initial packet sent by the main control device to the MCU chip, and forward the profibus dp protocol response packet sent by the MCU chip to the main control device.
Further, the embedded blower controller further comprises: the device comprises a first Ethernet card and a second Ethernet card, wherein the MCU chip is connected with the first RJ45 interface through the first Ethernet card, and the MCU chip is connected with the second RJ45 interface through the second Ethernet card.
Further, the embedded blower controller further comprises: first level transition module, second level transition module and third level transition module, wherein, first level transition module respectively with the USART1 module of MCU chip with first DB9 interface is connected, second level transition module respectively with the USART2 module of MCU chip with second DB9 interface is connected, third level transition module respectively with DP protocol chip with third DB9 interface is connected.
Further, the embedded blower controller further comprises: and the FSMC bus is used for connecting the DP protocol chip and the MCU chip.
Further, the embedded blower controller further comprises: the digital controller comprises a DI input module and a DO output module, wherein the MCU chip is respectively connected with the DI input module and the DO output module; the DI input module is used for receiving 16 paths of digital quantity input signals and sending the 16 paths of digital quantity input signals to the MCU chip so that the MCU chip generates 16 paths of digital quantity output signals based on the 16 paths of digital quantity input signals; and the DO output module is used for sending the 16 paths of digital quantity output signals.
Further, the embedded blower controller further comprises: the MCU chip is respectively connected with the AI input module and the AO output module; the AI input module is configured to receive a target signal, where the target signal at least includes: the voltage signal of a first preset range, the current signal of a second preset range and the analog quantity input signal sent by the sensor are obtained; and the AO output module is used for outputting the current signal in the second preset range.
Further, the embedded blower controller further comprises: the power-down non-loss storage module is connected with the MCU chip; and the power-down non-loss storage module is used for storing the control parameters in the embedded blower controller.
In a second aspect, there is also provided in an embodiment of the present invention, a multi-protocol embedded blower control system, including: the embedded blower controller, the main control device, the frequency converter, the magnetic bearing controller, the cooling system and the blow-down valve according to the first aspect, wherein the embedded blower controller is respectively connected with the main control device, the frequency converter, the magnetic bearing controller, the cooling system and the blow-down valve, and the blower is respectively connected with the magnetic bearing controller and the frequency converter.
In an embodiment of the invention, one or more of the multi-protocol messages are received at the user communication interface, and after the system communication interface receives the target message sent by the frequency converter of the magnetic suspension blower, the magnetic bearing controller of the magnetic suspension blower and the display screen, the MCU chip analyzes the message to determine the communication protocol corresponding to the message, and generates a response message corresponding to the communication protocol, and transmits the response message to the corresponding device through the user communication interface and/or the system communication interface, the purpose of supporting different communication protocols to control the blower is achieved by the principle that the embedded system supports multi-protocol communication, and then solved the relatively poor technical problem of suitability of current PLC magnetic suspension air blower control system to the technological effect of promotion magnetic suspension air blower control system's suitability has been realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a multi-protocol embedded blower controller according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second multi-protocol embedded blower controller provided by an embodiment of the present invention;
fig. 3 is a logic diagram of a dual network card and a dual protocol according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a third multi-protocol embedded blower controller provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a multi-protocol embedded blower control system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
according to an embodiment of the present invention, there is provided an embodiment of a multi-protocol embedded blower controller, and fig. 1 is a schematic diagram of a multi-protocol embedded blower controller according to an embodiment of the present invention, as shown in fig. 1, the multi-protocol embedded blower controller including: the system comprises an MCU chip 10, a system communication interface 20 and a user communication interface 30, wherein the MCU chip is respectively connected with the system communication interface and the user communication interface, the system communication interface is connected with a target device, and the target device comprises: the system comprises a frequency converter of the magnetic suspension blower, a magnetic bearing controller of the magnetic suspension blower and a display screen, wherein a user communication interface is connected with a main control device;
the user communication interface 30 is configured to send an initial message sent by the main control device to the MCU chip, and forward a first response message sent by the MCU chip to the main control device, where the initial message is one or more of multi-protocol messages;
the system communication interface 20 is configured to send a target packet sent by the target device and send a second response packet to the target device;
the MCU chip 10 is configured to parse the initial packet and/or the target packet to obtain a parsed packet, and generate the first response packet and/or the second response packet based on the parsed packet.
Preferably, the MCU chip is an STM32F407 chip.
In an embodiment of the invention, one or more of the multi-protocol messages are received at the user communication interface, and after the system communication interface receives the target message sent by the frequency converter of the magnetic suspension blower, the magnetic bearing controller of the magnetic suspension blower and the display screen, the MCU chip analyzes the message to determine the communication protocol corresponding to the message, and generates a response message corresponding to the communication protocol, and transmits the response message to the corresponding device through the user communication interface and/or the system communication interface, the purpose of supporting different communication protocols to control the blower is achieved by the principle that the embedded system supports multi-protocol communication, and then solved the relatively poor technical problem of suitability of current PLC magnetic suspension air blower control system to the technological effect of promotion magnetic suspension air blower control system's suitability has been realized.
In the embodiment of the present invention, as shown in fig. 2, the system communication interface 20 includes: a first RJ45 interface 21 and a first DB9 interface 22, wherein the first RJ45 interface is connected to the display screen and the MCU chip, respectively, and the first DB9 interface is connected to the frequency converter of the magnetic suspension blower, the magnetic bearing controller of the magnetic suspension blower, and the MCU chip, respectively;
the first RJ45 interface 21 is configured to forward a siemens 7 and/or a TCPModbus protocol initial message sent by the display screen to the MCU chip, and forward a siemens 7 and/or a TCPModbus protocol reply message sent by the MCU chip to the display screen;
the first DB9 interface 22 is configured to form an RS485 network with a frequency converter of the magnetic levitation blower and a magnetic bearing controller of the magnetic levitation blower.
The user communication interface 30 includes: a second RJ45 interface 31, a third RJ45 interface 32, a second DB9 interface 33, and a third DB9 interface 34, where the third RJ45 interface is connected to the MCU chip through a PN protocol chip, and the third DB9 interface is connected to the MCU chip through a DP protocol chip;
the second RJ45 interface 31 is configured to forward a siemens 7 and/or a TCPModbus protocol initial packet sent by the master control device to the MCU chip, and forward a siemens 7 and/or a TCPModbus protocol reply packet sent by the MCU chip to the master control device;
the third RJ45 interface 32 is configured to forward the Profinet protocol initial packet sent by the main control device to the MCU chip, and forward the Profinet protocol response packet sent by the MCU chip to the main control device;
the second DB9 interface 33 is configured to forward the ModburRTU protocol initial packet sent by the main control device to the MCU chip, and forward the ModburRTU protocol response packet sent by the MCU chip to the main control device;
the third DB9 interface 34 is configured to forward the profibus dp protocol initial packet sent by the main control device to the MCU chip, and forward the profibus dp protocol response packet sent by the MCU chip to the main control device.
In the embodiment of the invention, three RJ45 network interfaces are included, a first RJ45 is connected with an interface of a liquid crystal display screen, a second RJ45 is a user communication interface and supports Siemens s7 and TCPModbus protocols, and a third RJ45 is also a user communication interface and supports Profinet protocols. The system comprises three DB9 interfaces, wherein a first DB9, a frequency converter and a magnetic bearing controller form an RS485 network, a second DB9 is a user communication interface and supports a ModbusRTU protocol, and a third DB9 is a user communication interface and supports a Profibus DP protocol.
The communication interfaces include three ethernet interfaces first RJ45, second RJ45, third RJ45 and three DB9 interfaces first DB9, second DB9, third DB 9. The first RJ45 and the first DB9 are communication interfaces for the system, and the second RJ45, the third RJ45, the second DB9 and the third DB9 are reserved user communication interfaces supporting common industrial protocols of Siemens S7, TCPModbus, Profinet, ModbusRTU and Profibus DP.
The user communication interface is connected to the master control device. If the main control equipment is a ProfieNet protocol, a third RJ45 interface needs to be connected; if Siemens 7 or TCPModbus protocol, a second RJ45 interface is required; if the ModburRTU protocol is adopted, a second DB9 interface is required to be connected; in case of profibus dp protocol, a third DB9 interface needs to be connected. Connecting different interfaces may implement different protocols.
It should be noted that, preferably, the DP protocol chip and the MCU chip are connected via an FSMC bus.
The operation of the multi-protocol embedded blower controller will be described below.
And starting 5 threads to monitor messages of 4 user communication interfaces respectively, and when a message arrives at a corresponding interface, analyzing and processing the message of the interface by the corresponding thread.
When a message arrives at the third RJ45, the PN protocol chip sends the message to the MCU, the thread 1 receives and processes the message, and sends out a response message through the PN protocol chip.
PHY2 is connected to the ethernet controller of the MCU, and the MCU software program runs the TCP/IP protocol stack to enable thread 2 and thread 3 to listen to the two network ports 102 and 502, respectively. The message of the 502 port is the message of the TCPModbus protocol, and the message of the 102 port is the message of the Siemens 7 protocol. When the 502 port message arrives, the thread 3 calls the modbus protocol stack to analyze and process the message, and when the 102 port message arrives, the thread 2 calls the s7 protocol stack to analyze and process the message.
The MCU is connected with the DP protocol chip through an FSMC bus. When a message arrives, the third DB9 sends the message to the MCU by the DP protocol chip, and the thread 4 receives and processes the message and sends out a response message by the DP protocol chip.
When a message arrives at the second DB9, the thread 5 receives the message, and sends a response message after the message is analyzed and processed by the modbus protocol stack.
In an embodiment of the present invention, as shown in fig. 2, the embedded blower controller further includes: the first ethernet card 41 and the second ethernet card 42, wherein the MCU chip is connected to the first RJ45 interface through the first ethernet card, and the MCU chip is connected to the second RJ45 interface through the second ethernet card.
The embedded blower controller further comprises: a first level shift module 51, a second level shift module 52 and a third level shift module 53, wherein, the first level shift module respectively with the USART1 module of the MCU chip and the first DB9 interface is connected, the second level shift module respectively with the USART2 module of the MCU chip and the second DB9 interface is connected, the third level shift module respectively with the DP protocol chip and the third DB9 interface is connected.
As shown in fig. 3, fig. 3 is a logic diagram of a dual network card and dual protocol.
The following describes an implementation method for the first ethernet card and the second ethernet card to support two protocols, TCPModbus and siemens 7, with reference to fig. 3.
First, two ethernet cards are initialized, the IP address of the first ethernet card is IP1, and the IP address of the second ethernet card is IP 2. And adding two network card control blocks of a first Ethernet card and a second Ethernet card into the network card control block linked list, wherein the network card control block comprises a network card number, the first Ethernet card number is 1, and the second Ethernet card number is 2.
The TCP server is initialized. 4 TCP control blocks, pcb1, pcb2, pcb3 and pcb4 are initialized. Each control block binds and listens to one communication port number. Each network card corresponds to two control blocks, and the first ethernet card corresponds to pcb1 and pcb2, and listens to ports 102 and 502 respectively. The second ethernet card corresponds to pcb3 and pcb4, listening to ports 102 and 502, respectively.
And after the network card receives the message, the program enters an interrupt function, and whether the first Ethernet card or the second Ethernet card receives the message is judged according to the number of the network card. And copying the message corresponding to the network card receiving buffer to the message buffer of the network card control block.
And calling the Ethernet, the IP and the TCP layer protocol to analyze the message to obtain an application layer message. And the TCP layer protocol copies the message sent to the corresponding port number to the corresponding control block. The message of the 102 port of the first ethernet card is copied to the pcb1, the message of the 502 port of the first ethernet card is copied to the pcb2, the message of the 102 port of the second ethernet card is copied to the pcb3, and the message of the 502 port of the second ethernet card is copied to the pcb 4.
The port number 102 is the s7 protocol private port number, and the port number 502 is the TCPModbus protocol private port number. The protocol types can be distinguished through the port numbers, and the corresponding software protocol stack is called to process the protocol message of the application layer.
And the protocol stack sends the message after processing the message, and writes the message into a sending buffer zone of the corresponding network card through the network card number of the network card control block.
It should be noted that the embedded blower controller in the embodiment of the present invention may support multiple network card extensions, and is not limited to the two network cards described above, and meanwhile, the embedded blower controller in the embodiment of the present invention may also support multiple communication protocols implemented based on ethernet, as long as the application layer software protocol stack can be implemented.
In an embodiment of the present invention, as shown in fig. 4, the embedded blower controller further includes: a DI input module 61 and a DO output module 62, wherein the MCU chip is respectively connected with the DI input module and the DO output module;
the DI input module 61 is configured to receive 16 paths of digital quantity input signals, and send the 16 paths of digital quantity input signals to the MCU chip, so that the MCU chip generates 16 paths of digital quantity output signals based on the 16 paths of digital quantity input signals;
the DO output module 62 is configured to send the 16 digital quantity output signals.
The embedded blower controller further comprises: an AI input module 71 and an AO output module 72, wherein the MCU chip is connected with the AI input module and the AO output module respectively;
the AI input module 71 is configured to receive a target signal, where the target signal at least includes: the voltage signal of a first preset range, the current signal of a second preset range and the analog quantity input signal sent by the sensor are obtained;
the AO output module 72 is configured to output the current signal in the second preset range.
The embedded blower controller further comprises: a power-down non-loss storage module 81, wherein the power-down non-loss storage module is connected with the MCU chip;
and the power-down non-loss storage module 81 is used for storing the control parameters in the embedded blower controller.
It should be noted that the power-down non-loss storage module includes an EEPROM module, a FLASH module, and an FRAM module.
Example two:
an embodiment of the present invention further provides a multi-protocol embedded blower control system, as shown in fig. 5, fig. 5 is a schematic diagram of the multi-protocol embedded blower control system, where the multi-protocol embedded blower control system includes: the embedded blower controller 100, the main control device 200, the frequency converter 300, the magnetic bearing controller 400, the cooling system 500 and the blow-down valve 600 according to the first embodiment of the present invention, wherein the embedded blower controller is connected to the main control device, the frequency converter, the magnetic bearing controller, the cooling system and the blow-down valve, and the blower is connected to the magnetic bearing controller and the frequency converter.
In an embodiment of the invention, one or more of the multi-protocol messages are received at the user communication interface, and after the system communication interface receives the target message sent by the frequency converter of the magnetic suspension blower, the magnetic bearing controller of the magnetic suspension blower and the display screen, the MCU chip analyzes the message to determine the communication protocol corresponding to the message, and generates a response message corresponding to the communication protocol, and transmits the response message to the corresponding device through the user communication interface and/or the system communication interface, the purpose of supporting different communication protocols to control the blower is achieved by the principle that the embedded system supports multi-protocol communication, and then solved the relatively poor technical problem of suitability of current PLC magnetic suspension air blower control system to the technological effect of promotion magnetic suspension air blower control system's suitability has been realized.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A multi-protocol embedded blower controller, comprising: MCU chip, system communication interface and user communication interface, wherein, the MCU chip respectively with system communication interface and user communication interface are connected, system communication interface is connected with target device, target device includes: the system comprises a frequency converter of the magnetic suspension blower, a magnetic bearing controller of the magnetic suspension blower and a display screen, wherein a user communication interface is connected with a main control device;
the user communication interface is used for sending an initial message sent by the main control device to the MCU chip and forwarding a first response message sent by the MCU chip to the main control device, wherein the initial message is a multi-protocol message;
the system communication interface is used for sending a target message sent by the target equipment to the MCU chip and sending a second response message to the target equipment;
the MCU chip is used for analyzing the initial message and/or the target message to obtain an analyzed message, and generating the first response message and/or the second response message based on the analyzed message;
wherein the system communication interface comprises: the magnetic suspension air blower comprises a first RJ45 interface and a first DB9 interface, wherein the first RJ45 interface is respectively connected with the display screen and the MCU chip, and the first DB9 interface is respectively connected with a frequency converter of the magnetic suspension air blower, a magnetic bearing controller of the magnetic suspension air blower and the MCU chip;
the first RJ45 interface is configured to forward a siemens s7 and/or a TCPModbus protocol initial message sent by the display screen to the MCU chip, and forward a siemens s7 and/or a TCPModbus protocol reply message sent by the MCU chip to the display screen;
the first DB9 interface is used for forming an RS485 network with a frequency converter of the magnetic suspension blower and a magnetic bearing controller of the magnetic suspension blower;
wherein the embedded blower controller further comprises: the device comprises a first Ethernet card and a second Ethernet card, wherein the MCU chip is connected with the first RJ45 interface through the first Ethernet card, and the MCU chip is connected with the second RJ45 interface through the second Ethernet card;
the first Ethernet card and the second Ethernet card both support Siemens 7 and TCPModbus protocols.
2. The embedded blower controller of claim 1, wherein the user communication interface comprises: a second RJ45 interface, a third RJ45 interface, a second DB9 interface and a third DB9 interface, wherein the third RJ45 interface is connected with the MCU chip through a PN protocol chip, and the third DB9 interface is connected with the MCU chip through a DP protocol chip;
the second RJ45 interface is configured to forward a siemens 7 and/or a TCPModbus protocol initial packet sent by the master control device to the MCU chip, and forward a siemens 7 and/or a TCPModbus protocol reply packet sent by the MCU chip to the master control device;
the third RJ45 interface is configured to forward the Profinet protocol initial packet sent by the main control device to the MCU chip, and forward the Profinet protocol response packet sent by the MCU chip to the main control device;
the second DB9 interface is configured to forward the ModburRTU protocol initial packet sent by the main control device to the MCU chip, and forward the ModburRTU protocol reply packet sent by the MCU chip to the main control device;
the third DB9 interface is configured to forward the profibus dp protocol initial packet sent by the main control device to the MCU chip, and forward the profibus dp protocol response packet sent by the MCU chip to the main control device.
3. The embedded blower controller of claim 2, further comprising: first level transition module, second level transition module and third level transition module, wherein, first level transition module respectively with the USART1 module of MCU chip with first DB9 interface is connected, second level transition module respectively with the USART2 module of MCU chip with second DB9 interface is connected, third level transition module respectively with DP protocol chip with third DB9 interface is connected.
4. The embedded blower controller of claim 2, further comprising:
and the FSMC bus is used for connecting the DP protocol chip and the MCU chip.
5. The embedded blower controller of claim 1, further comprising: the digital controller comprises a DI input module and a DO output module, wherein the MCU chip is respectively connected with the DI input module and the DO output module;
the DI input module is used for receiving 16 paths of digital quantity input signals and sending the 16 paths of digital quantity input signals to the MCU chip so that the MCU chip generates 16 paths of digital quantity output signals based on the 16 paths of digital quantity input signals;
and the DO output module is used for sending the 16 paths of digital quantity output signals.
6. The embedded blower controller of claim 1, further comprising: the MCU chip is respectively connected with the AI input module and the AO output module;
the AI input module is configured to receive a target signal, where the target signal at least includes: the voltage signal of a first preset range, the current signal of a second preset range and the analog quantity input signal sent by the sensor are obtained;
and the AO output module is used for outputting the current signal in the second preset range.
7. The embedded blower controller of claim 1, further comprising: the power-down non-loss storage module is connected with the MCU chip;
and the power-down non-loss storage module is used for storing the control parameters in the embedded blower controller.
8. A multi-protocol embedded blower control system, comprising: the embedded blower controller of any one of claims 1-7, a master control device, a frequency converter, a magnetic bearing controller, a cooling system, and a blow-down valve, wherein the embedded blower controller is connected to the master control device, the frequency converter, the magnetic bearing controller, the cooling system, and the blow-down valve, respectively, and a blower is connected to the magnetic bearing controller and the frequency converter, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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