CN103200195A - Transformation device and transformation method for transferring multiple serial protocols to Ethernet communication - Google Patents
Transformation device and transformation method for transferring multiple serial protocols to Ethernet communication Download PDFInfo
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- CN103200195A CN103200195A CN2013101078526A CN201310107852A CN103200195A CN 103200195 A CN103200195 A CN 103200195A CN 2013101078526 A CN2013101078526 A CN 2013101078526A CN 201310107852 A CN201310107852 A CN 201310107852A CN 103200195 A CN103200195 A CN 103200195A
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Abstract
The invention discloses a transformation device and a transformation method for transferring multiple serial protocols to Ethernet communication. The device comprises a serial communication device, an embedded type device, computer monitoring software, a serial communication data line and an Ethernet communication data line. The method comprises the following steps: 1, starting; 2, initializing; 3, sending a request to all devices; 4, receiving a transmission control protocol (TCP) data package through an internet access; 5, analyzing the TCP data package; 6, reading synchronous dynamic random access memory (SDRAM) data; 7, forming a TCP data package; 8, sending the data package to an Ethernet port; 9, connecting serial ports to a remote terminal unit (RTU) data package; 10, calibrating whether the RTU data package is right or not, and if yes, carrying out a step 11; 11, analyzing the RTU data package; 12, extracting data; 13, storing the data to SDRAM; if the RTU data package is not right, returning to the step 9 of connecting the serial ports to the RTU data package; and 14, finally, ending the procedure. The functions of enabling multiple serial devices to be connected with a network are achieved. The transformation device and the transformation method have the advantages of being high in real-time performance, strong in stability, opened in a kernel, strong in expansibility and the like, meeting application in many fields and being capable of achieving system integration easily.
Description
Technical field
The invention belongs to many serial ports change ethernet communication in a kind of computer communication conversion equipment and method, be specifically related to a kind of application embedded technology, programming structure adopts modular construction and multithreading to combine, multiple serial port communicating protocol formatted data is converted to ethernet communication protocol format data, realizes that simultaneously many serial ports change conversion equipment and the conversion method of ethernet communication.
Technical background
At industrial control field, supervisory control system generally need be carried out communication with multiple watch-dog, and the acquisition monitoring device data also realize control to it.At present, the ethernet communication technology obtains extensive use, has the data communication method of the supervisory control system of higher real-time performance requirement much to adopt the ethernet communication mode.And a lot of equipment only have serial communication interface in the industrial system, monitor in real time in the ethernet communication mode, need to realize the serial equipment networking.General adopt " serial equipment server " realized the serial equipment networking, but, because the serial equipment server is only done " data penetration transmission ", namely realized the communication function that serial ports changes Ethernet in outward appearance, and computer still carries out the communication processing according to the serial communication mode in itself in form., communications protocol many for complex structure, serial equipment kind reaches the demanding complicated supervisory control system of real-time more, adopts this kind method can not satisfy high real-time and can wait specification requirement.
Summary of the invention
The present invention proposes in order to overcome the shortcoming that exists in the prior art, its objective is provide a kind of can be accurately, in real time, stable, realize that many serial protocols change conversion equipment and the conversion method of ethernet communications simultaneously.
Technical scheme of the present invention is: a kind of many serial protocols change the conversion equipment of ethernet communication, comprise serial communication equipment, embedded device, computer monitoring software, serial communication data wire, ethernet communication data wire.Described serial communication equipment comprises 8 kinds of serial equipments, embedded device comprises serial ports P1～P8 interface, network interface LAN1 and LAN2 interface, CPU, the FLASH(program storage), the SDRAM(data storage), wherein P1～P8 interface can be arranged to the serial communication interface of RS-232/RS-422/RS-485 arbitrary format, 8 kinds of serial equipments are communicated with serial ports P1～P8 respectively by the serial communication data wire, serial ports P1～P8 is communicated with CPU, CPU respectively with FLASH and LAN1, the LAN2 interface is communicated with, LAN1, the LAN2 interface is communicated with computer monitoring software by the ethernet communication data wire.
Described embedded device is selected embedded industrial computer UC-7420 for use.
Described computer monitoring software is selected the KingView monitoring software for use.
A kind of many serial protocols change the conversion method of ethernet communication conversion equipment, and the software programming of this conversion method comprises: beginning module, Ethernet interface data processing threads module, serial data processing threads module, the module that finishes; Its flow process may further comprise the steps:
The beginning module comprises the following steps: to begin S1, initialization S2, sends request S3 to all devices.
Ethernet interface data processing threads module comprises the following steps: that network interface receives tcp data bag S4, resolves tcp data bag S5, reads SDRAM data S6, forms tcp data bag S7, sends to Ethernet interface S8.
Does serial data processing threads module comprise the following steps: that serial ports is received RTU packet S9, verification is correct? S10 resolves RTU packet S11, takes out data S12, stores SDRAM S13 into if then enter; Receive RTU packet S9 if not then turning back to serial ports.
At last, EP (end of program) S14.
Beneficial effect of the present invention
The present invention realized simultaneously the function of multiple serial equipment networking, and characteristic such as have the real-time height, stability is strong, kernel is open and autgmentability is strong satisfies the application in many fields, is easy to realize the system integration.
Description of drawings
Fig. 1 is the conversion equipment block diagram that the many serial protocols of the present invention change ethernet communication;
Fig. 2 is the conversion method flow chart that the many serial protocols of the present invention change ethernet communication.
Wherein:
1 serial communication equipment, 2 embedded devices
3 computer monitoring softwares, 4 serial communication data wires
5 ethernet communication data wires, 6 beginning modules
7 Ethernet interface data processing threads modules
8 serial data processing threads modules 9 finish module.
Embodiment
Below, with reference to drawings and Examples conversion equipment and the conversion method that a kind of many serial protocols of the present invention change ethernet communication is elaborated:
As shown in Figure 1, a kind of conversion equipment of many serial protocol commentaries on classics ethernet communications comprises: serial communication equipment 1, embedded device 2, computer monitoring software 3, serial communication data wire 4, ethernet communication data wire 5.Wherein, serial communication equipment 1 comprises serial equipment 1～serial equipment 8 totally 8 kinds of serial equipments, embedded device 2 comprises serial ports P1～P8 interface, network interface LAN1, LAN2 interface, CPU, FLASH(program storage), the SDRAM(data storage), wherein P1～P8 interface can be arranged to the serial communication interface of RS-232/RS-422/RS-485 arbitrary format.
Serial equipment 1～serial equipment 8 is communicated with serial ports P1～P8 respectively by serial communication data wire 4, serial ports P1～P8 is communicated with CPU, CPU is communicated with FLASH and LAN1, LAN2 interface respectively, and LAN1, LAN2 interface are communicated with computer monitoring software 3 by ethernet communication data wire 5.
Wherein, embedded device 2 is selected the embedded industrial computer UC-7420 of MOXA company for use, and computer monitoring software 3 is selected the KingView monitoring software of Beijing inferior control company for use.
As shown in Figure 2, the programming realization flow of the conversion method of the many serial protocols commentaries on classics of the present invention ethernet communication comprises: beginning module 6, Ethernet interface data processing threads module 7, serial data processing threads module 8, the module 9 that finishes.
Wherein, beginning module 6 comprises the following steps: to begin S1, initialization S2, sends request S3 to all devices.
Ethernet interface data processing threads module 7 comprises the following steps: that network interface receives tcp data bag S4, resolves tcp data bag S5, reads SDRAM data S6, forms tcp data bag S7, sends to Ethernet interface S8.
If serial data processing threads module 8 comprises the following steps: that serial ports is received RTU packet S9, verification S10 verification correctly then entered and resolves RTU packet S11, takes out data S12, stores SDRAM S13 into; If it is incorrect then turn back to serial ports and receive RTU packet S9.
At last, EP (end of program) S14.
The course of work of the present invention is:
After the program operation, at first carry out beginning module 6, after beginning S1 started the communication conversion program, initialization S2 carried out initializing variable, distribute data memory, sent the data request command that request S3 sends all devices to all devices then; When serial data processing threads module 8 receives serial ports RTU packet S9, the serial ports RTU packet that receives is carried out verification S10 according to its communications protocol, to discard this packet if verification is incorrect, if verification correctly will be resolved RTU packet S11, take out data S12 supplemental characteristic is stored among the data storage SDRAM S13; Simultaneously, Ethernet interface data processing threads module 7 is also being carried out its function, when Ethernet interface data processing threads module 7 receives network interface tcp data bag S4, resolve tcp data bag S5 according to Transmission Control Protocol, reading SDRAM data S6 then takes out the data of asking in the tcp data bag, form tcp data bag S7 the data of asking are packaged into TCP formatted data bag, send to Ethernet interface S8.
Realized that so many serial ports change the ethernet communication translation function, before EP (end of program), serial data processing threads module 8 is moved with Ethernet network interface data processing threads module 7 always, carries out continuous, stable communication conversion.When stopping the communication translation function, carry out and finish module 4, finish S14 and discharge internal memory, terminator.
The present invention has realized that many serial ports change the ethernet communication functions, characteristic such as have the real-time height, stability is strong, kernel is open and autgmentability is strong.Be applicable to constitute complicated, the serial equipment kind is many, the communications protocol kind is many, stable, real-time and the exigent supervisory control system of autgmentability, can conveniently manage multiple different communication equipment and agreement, is easy to realize the system integration.
Claims (4)
1. serial protocol more than a kind changes the conversion equipment of ethernet communication, comprise serial communication equipment (1), embedded device (2), computer monitoring software (3), serial communication data wire (4), ethernet communication data wire (5), it is characterized in that: described serial communication equipment (1) comprises serial equipment 1～serial equipment 8 totally eight kinds of serial equipments, embedded device (2) comprises serial ports P1～P8 interface, network interface LAN1, the LAN2 interface, CPU, the FLASH(program storage), SDRAM, wherein P1～P8 interface can be arranged to the serial communication interface of RS-232/RS-422/RS-485 arbitrary format, serial equipment 1～serial equipment 8 is communicated with serial ports P1～P8 respectively by serial communication data wire (4), serial ports P1～P8 is communicated with CPU, CPU respectively with FLASH and LAN1, the LAN2 interface is communicated with, LAN1, the LAN2 interface is communicated with computer monitoring software (3) by ethernet communication data wire (5).
2. a kind of many serial protocols according to claim 1 change the conversion equipment of ethernet communication, and it is characterized in that: described embedded device (2) is selected embedded industrial computer UC-7420 for use.
3. a kind of many serial protocols according to claim 1 change the conversion equipment of ethernet communication, and it is characterized in that: described computer monitoring software 3 is selected the KingView monitoring software for use.
4. change the conversion method of the conversion equipment of ethernet communication according to many serial protocols, it is characterized in that: the software programming of this conversion method comprises: beginning module (6), Ethernet interface data processing threads module (7), serial data processing threads module (8), the module (9) that finishes; Its flow process may further comprise the steps: beginning module (6) comprises the following steps: to begin S1, initialization S2, sends request S3 to all devices;
Ethernet interface data processing threads module (7) comprises the following steps: that network interface receives tcp data bag S4, resolves tcp data bag S5, reads SDRAM data S6, forms tcp data bag S7, sends to Ethernet interface S8;
Does serial data processing threads module (8) comprise the following steps: that serial ports is received RTU packet S9, verification is correct? S10 resolves RTU packet S11, takes out data S12, stores SDRAM S13 into if then enter; Receive RTU packet S9 if not then turning back to serial ports;
At last, EP (end of program) S14.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103616927A (en) * | 2013-11-08 | 2014-03-05 | 安徽康海时代科技有限公司 | Data communication server |
| CN105573300A (en) * | 2016-01-29 | 2016-05-11 | 广州能迪能源科技股份有限公司 | Data acquisition replication system based on Internet-of-things and control method thereof |
| CN109977052A (en) * | 2019-04-02 | 2019-07-05 | 上海卓岚信息科技有限公司 | System, medium, chip and the electronic equipment of method for converting protocol and application this method |
| CN110933133A (en) * | 2019-10-28 | 2020-03-27 | 浙江工商大学 | Internet of things method and device for gas station |
| CN113452628A (en) * | 2021-06-22 | 2021-09-28 | 中国船舶重工集团公司第七0七研究所 | Multifunctional interface adapter and control method thereof |
| CN117544609A (en) * | 2024-01-09 | 2024-02-09 | 广州美凯信息技术股份有限公司 | Data transmission method of serial port transmission system based on KVM control |
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| CN110933133A (en) * | 2019-10-28 | 2020-03-27 | 浙江工商大学 | Internet of things method and device for gas station |
| CN113452628A (en) * | 2021-06-22 | 2021-09-28 | 中国船舶重工集团公司第七0七研究所 | Multifunctional interface adapter and control method thereof |
| CN117544609A (en) * | 2024-01-09 | 2024-02-09 | 广州美凯信息技术股份有限公司 | Data transmission method of serial port transmission system based on KVM control |
| CN117544609B (en) * | 2024-01-09 | 2024-04-02 | 广州美凯信息技术股份有限公司 | Data transmission method of serial port transmission system based on KVM control |
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