CN201813389U - High-voltage SVC (switched virtual circuit) communication system based on UDP (user datagram protocol) protocol - Google Patents
High-voltage SVC (switched virtual circuit) communication system based on UDP (user datagram protocol) protocol Download PDFInfo
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- CN201813389U CN201813389U CN201020513104XU CN201020513104U CN201813389U CN 201813389 U CN201813389 U CN 201813389U CN 201020513104X U CN201020513104X U CN 201020513104XU CN 201020513104 U CN201020513104 U CN 201020513104U CN 201813389 U CN201813389 U CN 201813389U
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Abstract
The utility model discloses a high-voltage SVC (switched virtual circuit) communication system based on a UDP (user datagram protocol) protocol, which comprises an industrial control machine, an Ethernet exchanger and a DSP (digital signal processing) module in a SVC control board. The industrial control machine is in two-way connection with the DSP module in the SVC control board through the Ethernet exchanger according to the UDP protocol. The utility model solves the problem of application of the industrial control machine in multi-machine communication, and the industrial control machine adopts a communication format based on the UDP protocol with the Ethernet exchanger broadcasting data and the DSP module receiving data packets. The Ethernet structure based on the UDP protocol makes full use of the advantages of the high-voltage SVC communication system in industrial application that the high-voltage SVC communication system has high transmission speed and low energy consumption, is easy to install, has good compatibility and high openness, can support multiple devices and the like.
Description
Technical field
The utility model relates to electric power system, particularly a kind of high pressure SVC communication system based on udp protocol.
Background technology
Along with updating of communication network, the RS-232 of traditional low speed, communication modes such as RS-485 are replaced by the Ethernet of superior performance gradually.The utility model just makes up pattern based on Industrial Ethernet, has proposed the scheme of employing UDP (User Datagram Protocol) agreement realization reliable communicating.
UDP is a kind of simple fast data host-host protocol.It is positioned at the 4th layer (transport layer) of ISO-OSI reference model, thereby also is based on IP layer (the 3rd layer).All Data Receiving all adopt the IP address to carry out addressing.Owing to only added a spot of management information in the packet that sends, compared with TCP/IP and can obtain higher data throughout.
In order to satisfy the demand of rapid data transmission, udp protocol only provides basic function, so the data between communication parter are not to exchange as possible.UDP does not have as the security mechanism among the TCP/IP in addition.Udp protocol is the transmission of packet-oriented, but not towards connection.
The utility model content
Defective at above-mentioned prior art, the purpose of this utility model aims to provide a kind of high pressure SVC communication system based on udp protocol, as the multi computer communication system between industrial computer and SVC control board, adopt the communication modes of udp protocol, in the reliability and autgmentability of the information of guarantee, overcome the problem of real-time difference in the multi computer communication, and improved the efficient of communication system.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of high pressure SVC communication system based on udp protocol, comprise DSP module in industrial computer, Ethernet switch and the SVC control board, described industrial computer adopts udp protocol the DSP module is two-way in Ethernet switch and SVC control board and is connected.
What wherein the DSP module adopted is the TMS320x28335 series DSP chip of TI company.
Wherein the SVC control board also comprises the RTL8019 ethernet communication chip and the RJ-45 interface that is used to be connected switch of Realtek company.
Concrete operation principle of the present utility model and process are as described below: industrial computer is that the data collecting card of PCI-1800 is sampled to electrical network three-phase current, voltage and thyristor-controlled reactor TCR electric current by model by its inner monitoring software, then data are carried out fast Fourier transform, it is fft analysis, calculate the three-phase thyristor trigger angle, be packaged into the UDP message bag of specified rule, it is mail to Ethernet switch, the DSP module receives and unpacks the triggering of finishing the thyristor valve group in the SVC control board, repays valve group state simultaneously.
The beneficial effects of the utility model are: the udp protocol that the utility model is taked is as a kind of connectionless service, do not need to set up " shaking hands " information, speed is very fast, real-time is good, overhead is little and have an ability of multicast, adopts packet simple in structure of udp protocol, is convenient to tissue, hour can guarantee good reliability at data capacity, thereby make high pressure SVC communication system based on the udp protocol Ethernet solve the problem between the multi computer communication.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is that the overall structure of embodiment realizes block diagram;
Fig. 2 is the workflow diagram of the described high pressure SVC communication system based on udp protocol of embodiment.
Embodiment
As shown in Figure 1, the hardware that relates in the described communication system of embodiment mainly comprises the DSP module on the industrial computer that connects with twisted-pair feeder, Ethernet switch and three the SVC control boards.Industrial computer is being born deal with data, transmission packet as data processing core and is being received the effect of packet; Ethernet switch is then accepted host computer and slave computer, i.e. industrial computer and SVC control board play a part to be connected transfer as both bridge, as shown in Figure 2; The DSP module is responsible for trigger message is obtained in the packet parsing, and finishes the triggering of thyristor valve group and receive the function of repaying valve group state.Industrial computer and SVC control board must be formulated unified rule in the process that encapsulates and unpack, each data bit is defined, wherein the general format of packet is as follows: ethernet header * 7+IP header * 10+UDP header * 4+ user data * 9 (unit is a word, totally 30 words).In the utility model, user data is made as 9 words, and wherein form is as follows: phase sequence flag bit+state 1 information bit+state 2 information bits+state 3 information bits+state 4 information bits+state 5 information bits+expansion word * 3 (unit is a word).The state information position is defined as follows: forward and oppositely collect 12 thyristor states altogether and use the corresponding positions information representation in system, and the repayment high level pulse is received in position 1 expression, the repayment low level pulse is represented to receive in position 0.After DSP handles corresponding data, the information of receiving is encapsulated by above-mentioned rule, by ethernet communication chip RTL8019 chip packet is reached Ethernet switch then, promptly finishing a secondary data sends, the data of oneself are mail in industrial computer snooping switch data and examination meanwhile, unpack the analysis data then and obtain the thyristor valve state, finish communication.
It is an innovative point of the present utility model that this ethernet communication based on udp protocol replaces traditional RS-485 and RS-232 communication: the communication speed based on udp protocol is faster, stability is stronger, and the communication problem between the solution multimachine that can be desirable has improved the efficient of communication greatly.
Except realizing above-described function, also have following functions based on the high pressure SVC communication system of udp protocol:
1, status monitoring
The switch status display lamp can clearly be observed the data communication situation, and can stop up and physical fault such as circuit by the initial analysis simple fault.
2, autgmentability
What realize in this device is a pair of three communications, but can expand slave computer by twisted-pair feeder easily according to site environment and demand in practice, need not the hardware change.
Claims (3)
1. high pressure SVC communication system based on udp protocol is characterized in that: comprise DSP module in industrial computer, Ethernet switch and the SVC control board, described industrial computer adopts udp protocol the DSP module is two-way in Ethernet switch and SVC control board and is connected.
2. according to the described high pressure SVC communication system based on udp protocol of claim 1, it is characterized in that: what wherein the DSP module adopted is the TMS320x28335 series DSP chip of TI company.
3. according to claim 1 or 2 described high pressure SVC communication systems based on udp protocol, it is characterized in that: wherein the SVC control board also comprises the RTL8019 ethernet communication chip and the RJ-45 interface that is used to be connected Ethernet switch of Realtek company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020513104XU CN201813389U (en) | 2010-09-01 | 2010-09-01 | High-voltage SVC (switched virtual circuit) communication system based on UDP (user datagram protocol) protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020513104XU CN201813389U (en) | 2010-09-01 | 2010-09-01 | High-voltage SVC (switched virtual circuit) communication system based on UDP (user datagram protocol) protocol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813389U true CN201813389U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020513104XU Expired - Lifetime CN201813389U (en) | 2010-09-01 | 2010-09-01 | High-voltage SVC (switched virtual circuit) communication system based on UDP (user datagram protocol) protocol |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888508A (en) * | 2017-09-29 | 2018-04-06 | 广州奇芯机器人技术有限公司 | A kind of anti-interference weak projectivity procotol of digital control system and its AUT based on PC NC |
-
2010
- 2010-09-01 CN CN201020513104XU patent/CN201813389U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888508A (en) * | 2017-09-29 | 2018-04-06 | 广州奇芯机器人技术有限公司 | A kind of anti-interference weak projectivity procotol of digital control system and its AUT based on PC NC |
| CN107888508B (en) * | 2017-09-29 | 2021-07-20 | 广州奇芯机器人技术有限公司 | PC-NC-based numerical control system and anti-interference weak real-time communication method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAIYUN ELECTRIC GROUP CO., LTD. Effective date: 20130621 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130621 Address after: 410082 Hunan province Changsha Lushan Road No. 2 Patentee after: Hunan University Patentee after: Baiyun Power Group Co., Ltd. Address before: 410082 Hunan province Changsha Lushan Road No. 2 Patentee before: Hunan University |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |
|
| CX01 | Expiry of patent term |