CN106657115A - Frequency converter control system and protocol conversion card thereof - Google Patents
Frequency converter control system and protocol conversion card thereof Download PDFInfo
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- CN106657115A CN106657115A CN201611265196.2A CN201611265196A CN106657115A CN 106657115 A CN106657115 A CN 106657115A CN 201611265196 A CN201611265196 A CN 201611265196A CN 106657115 A CN106657115 A CN 106657115A
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- communication
- protocol conversion
- interface module
- processor
- conversion card
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
- G06F13/4286—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus using a handshaking protocol, e.g. RS232C link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/70—Virtual switches
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Communication Control (AREA)
- Computer And Data Communications (AREA)
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Abstract
The embodiment of the invention discloses a frequency converter control system and a protocol conversion card thereof. The protocol conversion card comprises a first communication interface module, a second communication interface module, a processor, a dual-port ARM, and an external expanded controller, wherein the processor is used for encapsulating and parsing inputted data, and performing virtual switch logic; the first communication interface module is connected with the processor; the external expanded controller is connected with the processor; the second communication interface module is connected with the external expanded controller; the first communication interface module and the second communication interface module are used for communicating with external corresponding communication equipment according to corresponding control signals of the processor; and the dual-port ARM is connected with the processor and used for data interaction with a corresponding frequency converter. The protocol conversion card provided by the invention is not only convenient for a communication master station to control a plurality of communication slave stations, but also the communication speed is faster, and the cost of a communication system can be reduced.
Description
Technical field
The present invention relates to industrial communication field, more particularly to a kind of frequency converter control system and its protocol conversion card.
Background technology
With the development of power technology, the application of frequency converter is more and more extensive.
In the application of frequency converter, the situation that a main website controls multiple slave stations can be usually run into.I.e. by a communication
The frequency converter operation of the multiple communication slave stations of main website control.At present, generally using based on BACnet/MSTP agreements (RS485 interfaces)
Transition card be directly realized by a communication main website and control multiple communication slave stations, but communication speed is slower, BACnet/IP agreements are
Based on the agreement of Ethernet interface, communication speed is very fast.But, the conversion equipment or complex structure based on BACnet/IP agreements,
Or content-switch is needed, it is relatively costly.
Therefore, how conveniently multiple communication slave stations can be controlled by communication main website, and communication speed comparatively fast can reduce communication again
The cost of system, is the current technical issues that need to address of those skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of frequency converter control system and its protocol conversion card, can conveniently communication main website control
Make multiple communication slave stations, and the very fast cost that can reduce communication system again of communication speed.
To solve above-mentioned technical problem, the invention provides following technical scheme：
A kind of protocol conversion card, including：First communication interface module, the second communication interface module, processor, dual port RAM,
Outer extender controller；Wherein, the processor is used for the data to being input into and is packaged, parses, and carries out virtual switch and patrol
Volume；First communication interface module and the processor connect, and the outer extender controller and the processor connect, and described the
Two communication interface modules and the outer extender controller connection, first communication interface module and second communication interface module
For being communicated with the corresponding communication apparatus in the external world according to the corresponding control signal of the processor；The dual port RAM and institute
Processor connection is stated, for carrying out data interaction with corresponding frequency converter.
Preferably, the dual port RAM is CPLD chips.
Preferably, the CPLD chips are by the first hardware interface and the corresponding frequency converter connection.
Preferably, the processor is additionally operable to carry out duplicate ip address detection and the detection of communication time out fault and communicates shape
State instruction is processed.
Preferably, first communication interface module includes the first ethernet interface circuit and connects with first Ethernet
First ethernet hardware interface of mouth circuit connection.
Preferably, second communication interface module includes the second ethernet interface circuit and connects with second Ethernet
Second ethernet hardware interface of mouth circuit connection.
Preferably, the processor includes：BACnet communication protocol processes units, for BACnet communication protocol datas
It is packaged and parses；Switch logic unit, for carrying out virtual switch logic process.
A kind of frequency converter control system, including：
The n protocol conversion card as described in above-mentioned any one, each protocol conversion card is separately positioned on corresponding communication
Connect in the slave station equipment of slave station and with corresponding frequency converter, n is the integer more than 0；
Positioned at the master device of communication main website；
The master device and each slave station equipment are sequentially connected with.
Compared with prior art, above-mentioned technical proposal has advantages below：
A kind of protocol conversion card that the embodiment of the present invention is provided, including：First communication interface module, the second communication interface
Module, processor, dual port RAM, outer extender controller；Wherein, processor is used to that the data of input to be packaged, parsed, and
Carry out virtual switch logic；First communication interface module and processor connect, and outer extender controller and processor connect, and second leads to
Communication interface module and outer extender controller connect, and the first communication interface module and the second communication interface module are used for according to processor
Corresponding control signal is communicated with the corresponding communication apparatus in the external world；Dual port RAM is connected with processor, for corresponding frequency conversion
Device carries out data interaction.When in use, only the protocol translation card need to be arranged in each communication slave station, what is be located with itself is logical
Frequency converter in news slave station is attached.Because the protocol conversion is arranged with two communication interface modules, therefore, one communication from
Standing can carry out communication connection with two communication apparatus, and so communicating main website can be with a communication interface of arbitrary communication slave station
Module connects, another communication interface module of the communication slave station can with other communication slave stations connections, then each communication from
Station is sequentially connected with, you can realize control of the communication main website to multiple communication slave stations.Communication main website can be by presetting communication protocol
Communication connection is carried out with each communication slave station, the existing protocol conversion function of protocol conversion card of each communication slave station, itself conduct again
Virtual switch carries out the transmission of information data.Multiple communication slave stations, and communication speed are controlled so as to both facilitate communication main website
The very fast cost that can reduce communication system again.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
These accompanying drawings obtain other accompanying drawings.
The protocol conversion card structural representation that Fig. 1 is provided by a kind of specific embodiment of the invention；
The frequency converter control system structural representation that Fig. 2 is provided by a kind of specific embodiment of the invention；
The CPLD data partition schematic diagrames that Fig. 3 is provided by a kind of specific embodiment of the invention.
Specific embodiment
The core of the present invention is to provide a kind of frequency converter control system and its protocol conversion card, can conveniently communication main website control
Make multiple communication slave stations, and the very fast cost that can reduce communication system again of communication speed.
In order that the above objects, features and advantages of the present invention can become apparent from it is understandable, below in conjunction with the accompanying drawings to this
Bright specific embodiment is described in detail.
Elaborate detail in order to fully understand the present invention in the following description.But the present invention can with it is various not
It is same as alternate manner described here to implement, those skilled in the art can do class in the case of without prejudice to intension of the present invention
Like popularization.Therefore the present invention is not limited by following public specific embodiment.
Refer to Fig. 1, the protocol conversion card structural representation that Fig. 1 is provided by a kind of specific embodiment of the invention.
A kind of specific embodiment of the present invention provides a kind of protocol conversion card, including：First communication interface module 1,
Second communication interface module 2, processor 3, dual port RAM 4, outer extender controller 5；Wherein, processor 3 is used to enter the data of input
Row encapsulation, parsing, and carry out virtual switch logic；First communication interface module 1 and processor 3 connect, outer extender controller 5
Connect with processor 3, the second communication interface module 2 and outer extender controller 5 connect, the first communication interface module 1 and second is communicated
Interface module 2 is used to be communicated with the corresponding communication apparatus in the external world according to the corresponding control signal of processor 3；Dual port RAM 4 with
Processor 3 connects, for carrying out data interaction with corresponding frequency converter.
In the present embodiment, preferred processor includes：BACnet communication protocol processes units, for communicating to BACnet
Protocol data is packaged and parses；Switch logic unit, for carrying out virtual switch logic process.It is right that processor is used for
Communications protocol carries out conversion process, by default communications protocol such as BACnet communication Protocol Conversions into custom protocol；And carry out void
Intend switch logic；Further, processor is additionally operable to carry out duplicate ip address detection and communication time out fault detection, that is, carry out
Address card error detection logic；And communication state instruction process etc..Because being generally provided only with a built-in communication control in processor
Device processed, therefore, an outer extender controller is set in the present embodiment, for assisting to realize double network interface virtual switch functions, enter
One step, in the present embodiment preferred protocol transition card is communicated by Ethernet and extraneous communication apparatus, then extend out control
Device processed is to extend out ethernet controller.
When in use, only the protocol translation card need to be arranged in each communication slave station, the communication slave station being located with itself
In frequency converter be attached.Because the protocol conversion is arranged with two communication interface modules, it is thereby achieved that double network interfaces are empty
Intend switch function, one communication slave station can carry out communication connection with two communication apparatus, so communicate main website can with times
One communication interface module connection of one communication slave station, another communication interface module of the communication slave station can be with other communications
Slave station connects, and then each communication slave station is sequentially connected with, you can realize control of the communication main website to multiple communication slave stations.Communication master
Standing can carry out communication connection by the preset protocols such as BACnet/IP standard agreements and each communication slave station, each communication slave station
The existing protocol conversion function of protocol conversion card, itself enters the transmission of row information as virtual switch again.It is logical so as to both facilitate
News main website controls multiple communication slave stations, and the very fast cost that can reduce communication system again of communication speed.
In one embodiment of the invention, dual port RAM (random access memory) is CPLD (complex programmable logics
Device) chip.CPLD chips are connected by the first hardware interface and corresponding frequency converter.Using the first hardware interface as agreement
The electrical connection of transition card and frequency converter, and by CPLD chips come the function of one dual port RAM of programming realization, relative to special
Dual port RAM, reduces cost and volume.
Further, the first communication interface module include the first ethernet interface circuit and with the first ethernet interface circuit
First ethernet hardware interface of connection.Second communication interface module include the second ethernet interface circuit and with the second Ethernet
Second ethernet hardware interface of interface circuit connection.First ethernet hardware interface and the second ethernet hardware interface are preferably
RJ45 interfaces.
In the present embodiment, ethernet interface circuit is mainly the circuit of network isolation transformer and its correlation, RJ45
As two Ethernet crystal plugs, the master device for communicating main website can be with the RJ45 interfaces of the arbitrary ethernet interface module of grafting
To carry out Communication Control to the slave station equipment that the protocol conversion card is located.
Refer to Fig. 2, the frequency converter control system structural representation that Fig. 2 is provided by a kind of specific embodiment of the invention
Figure.
Correspondingly, one embodiment of the present invention additionally provides a kind of frequency converter control system, including：N is appointed as described above
The protocol conversion card that one embodiment is provided, each protocol conversion card is separately positioned in the slave station equipment of corresponding communication slave station
And connect with corresponding frequency converter, n is the integer more than 0；Positioned at the master device of communication main website；Master device and each slave station
Equipment is sequentially connected with.
As shown in Fig. 2 the system includes a master device 21 and n slave station equipment 22.Each slave station equipment 22 is provided with one
Individual protocol conversion card 23 with master device 21 carrying out communication.Each slave station equipment is sequentially connected with as shown in Figure 2, the first positioned at order
Slave station equipment and master device connection.
In the present embodiment, protocol conversion card application BACnet/IP agreements are communicated.BACnet/IP is that one kind will
The agreement that LWIP protocol stacks and BACnet protocol stacks combine.Protocol conversion card is for the number received from ethernet interface module
According to processor first determines whether whether the data are broadcasting packets, if broadcasting packet, then according to itself another Ethernet interface
The presence of module determines whether to enter Frame repeating process, enters back into packet parsing program；If the data are non-broadcasting
Message, then judge whether it is the machine message, if the machine message is then directly entered packet parsing program；If non-native message,
Then determined whether to carry out message repeating process according to the presence of itself another ethernet interface module, but do not enter message
Resolving.
Because of the setting of ethernet interface module, when message is received, identification is needed to be currently received the Ethernet interface mould of message
Block, message to be sent to correct ethernet interface module in message response.This protocol conversion card is also equipped with repeating IP
Detection function and communication time-out detection function, to detecting in the ethernet interface module of connection status, if having equipment with
The IP address of the slave station equipment that this protocol conversion card is located is identical, then the protocol conversion card report failure, if protocol conversion card is in
When in communication process, BACnet Frames are not received in setting time-out time, then report failure, malfunction to be referred to by status lamp
Show.
This protocol conversion card is connected with frequency converter by hardware interface, is communicated in the following ways.Because protocol conversion card with
Data exchange between frequency converter is realized by dual port RAM, and in the present embodiment, preferred dual port RAM is CPLD chips,
Therefore CPLD is divided into different data areas, as shown in figure 3, CPLD is divided into protocol conversion card data writes out area, association
View transition card data read-in area, frequency converter marker register, this four data fields of protocol conversion card flag register.
Wherein, convert after the BACnet/IP data frame analyzings that protocol conversion card data are write out area and received for protocol conversion card
Self-defining data frame memory area；Protocol conversion card data read-in area is the data frame memory area of frequency converter response；For agreement
Transition card flag register, protocol conversion card updates the status modifier register according to the data that protocol conversion card data write out area
Value, frequency converter inquires about the value of the register to determine whether protocol conversion card updates the data, and protocol conversion is read if having
The data of card data read-in area, and remove protocol conversion card data and write out area's data more new state to recognize next secondary data
Read in, if frequency converter has data answering, i.e. protocol conversion card data read-in area to have new data to update, frequency converter can update change simultaneously
To facilitate protocol conversion card to read the reply data of frequency converter renewal in time, protocol conversion card has been recognized frequency device marker register
Data update and then read the data of protocol conversion card data read-in area, and remove the renewal mark of the data in frequency converter marker register
Will recognizes the renewal of next secondary data to facilitate.
Further, before transition card and frequency converter carry out data exchange, allow both to be shaken hands to determine transition card
It is connected with frequency converter whether normally (i.e. a side writes data, another that the data can be read in corresponding internal memory), shakes hands into
Normal data transmission state could be entered after work(, protocol conversion card is configured with the house dog of 1ms, be crashed in protocol conversion card
Under situation, house dog can trigger reset signal.
In the present embodiment, the handshake procedure of conversion card and frequency converter is：CA_IND_REG is protocol translation card mark
Register, INV_IND_REG is frequency converter flag register.Frequency converter most starts a reset signal to be carried out initially to CPLD
Change and reset, protocol conversion card writes 0xA0 in protocol conversion card flag register CA_IND_REG first, become after certain hour
Frequency device reads the value of the protocol translation card flag register, if 0xA0, then writes toward frequency converter flag register INV_IND_REG
Enter 0xA0.Protocol translation card constantly reads the value of INV_IND_REG, until it is 0xA0, then deposits to protocol translation card mark
Device CA_IND_REG writes 0xF0, and frequency converter reads the value of the register after for a period of time, if 0xF0, then toward frequency converter mark
Will register INV_IND_REG writes 0xF0, and frequency converter side is shaken hands successfully；Protocol translation card constantly reads INV_IND_REG's
Value, until it is 0xF0, then protocol translation card also completes to shake hands.
In sum, embodiment of the present invention is provided frequency converter control system and its protocol conversion card, the agreement turns
Change and be arranged with two ethernet interface modules, protocol conversion is carried out by processor and switch function is realized, without the need for external friendship
Change planes, low cost is simple and compact for structure, i.e., with packet forwarding capability, one is realized in the case where access switch is not required to
It is much more main from communication.
A kind of frequency converter control system provided by the present invention and its protocol conversion card are described in detail above.Herein
In apply specific case the principle and embodiment of the present invention be set forth, the explanation of above example is only intended to side
Assistant's solution present invention and its core concept.It should be pointed out that for those skilled in the art, without departing from this
On the premise of inventive principle, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the present invention
In scope of the claims.
Claims (8)
1. a kind of protocol conversion card, it is characterised in that include：First communication interface module, the second communication interface module, process
Device, dual port RAM, outer extender controller；Wherein, the processor is used to that the data of input to be packaged, parsed, and carries out void
Intend switch logic；First communication interface module and processor connection, the outer extender controller and the processor
Connection, second communication interface module and the outer extender controller connection, first communication interface module and described second
Communication interface module is used to be communicated with the corresponding communication apparatus in the external world according to the corresponding control signal of the processor；It is described
Dual port RAM is connected with the processor, for carrying out data interaction with corresponding frequency converter.
2. protocol conversion card according to claim 1, it is characterised in that the dual port RAM is CPLD chips.
3. protocol conversion card according to claim 2, it is characterised in that the CPLD chips by the first hardware interface and
The corresponding frequency converter connection.
4. protocol conversion card according to claim 3, it is characterised in that the processor is additionally operable to carry out duplicate ip address
Detection and the detection of communication time out fault and communication state instruction are processed.
5. protocol conversion card according to claim 4, it is characterised in that first communication interface module include first with
Too network interface circuit and the first ethernet hardware interface for being connected with first ethernet interface circuit.
6. protocol conversion card according to claim 5, it is characterised in that second communication interface module include second with
Too network interface circuit and the second ethernet hardware interface for being connected with second ethernet interface circuit.
7. the protocol conversion card according to any one of claim 1 to 6, it is characterised in that the processor includes：BACnet
Communication protocol processes unit, for BACnet communication protocol datas to be packaged and parsed；Switch logic unit, be used for into
The process of row virtual switch logic.
8. a kind of frequency converter control system, it is characterised in that include：
The n protocol conversion card as described in any one of claim 1 to 6, each protocol conversion card is separately positioned on corresponding
Connect in the slave station equipment of communication slave station and with corresponding frequency converter, n is the integer more than 0；
Positioned at the master device of communication main website；
The master device and each slave station equipment are sequentially connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611265196.2A CN106657115B (en) | 2016-12-30 | 2016-12-30 | Frequency converter control system and protocol conversion card thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611265196.2A CN106657115B (en) | 2016-12-30 | 2016-12-30 | Frequency converter control system and protocol conversion card thereof |
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| CN106657115B CN106657115B (en) | 2020-09-04 |
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| CN107968738A (en) * | 2018-01-12 | 2018-04-27 | 深圳市英威腾电气股份有限公司 | A kind of slave, communication expansion card and group network system |
| CN110022380A (en) * | 2019-04-24 | 2019-07-16 | 深圳供电局有限公司 | Access terminal for communication of safety and stability control system |
| CN110247936A (en) * | 2019-08-01 | 2019-09-17 | 深圳市英威腾电气股份有限公司 | A kind of communications protocol transition card and Conversion System of Communication Protocol |
| CN114488871A (en) * | 2021-12-23 | 2022-05-13 | 深圳市海浦蒙特科技有限公司 | Control method, frequency converter and computer readable storage medium |
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|---|---|
| CN106657115B (en) | 2020-09-04 |
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