CN102891534A - Converter monitoring system based on digital signal processor (DSP), advanced reduced instruction set computer (RISC) machine (ARM) and Ethernet communication - Google Patents
Converter monitoring system based on digital signal processor (DSP), advanced reduced instruction set computer (RISC) machine (ARM) and Ethernet communication Download PDFInfo
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- CN102891534A CN102891534A CN2012103569829A CN201210356982A CN102891534A CN 102891534 A CN102891534 A CN 102891534A CN 2012103569829 A CN2012103569829 A CN 2012103569829A CN 201210356982 A CN201210356982 A CN 201210356982A CN 102891534 A CN102891534 A CN 102891534A
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Abstract
The invention provides a converter monitoring system based on a digital signal processor (DSP), an advanced reduced instruction set computer (RISC) machine (ARM) and Ethernet communication. A data acquisition and conversion module is used for converting actual physical quantity into digital quantity which is required by a control module; the control module is used for controlling a converter and communicating with an ARM module; the ARM module is used for communicating with an upper computer and the control module, processing and sending data from the control module by using a multi-thread processing function, and explaining and processing the data which are received by the upper computer; and an upper computer module is used for communicating with the ARM module through the Ethernet and operating a display and operation interface. The converter monitoring system has the advantages that the data which are obtained by internal operation of a converter control module can be acquired and sent; when a great number of data are required to be sent from the control module to the upper computer, the problem of low processing capacity of the control module is solved; and a control function of the converter monitoring system is improved, and a controller algorithm can be directly controlled by the upper computer.
Description
Technical field
The present invention relates to the embedded system device of wind power generation field, particularly, relate to a kind of current transformer supervisory control system based on DSP and ARM and ethernet communication.
Background technology
Existing current transformer supervisory control system mainly is comprised of following components: sensor assembly, signal condition module, audio data AD modular converter, signal processing module, host computer etc., the data of bottom are after treatment by mode and upper machine communications such as fieldbus, further analyze in host computer and show.The signal processing module major function of this supervisory control system is realized that by DSP signal processing module and current transformer control module are relatively independent, can realize the Real Time Monitoring to each physical quantity in the current transformer, and major function is observation, analysis, record etc.The defective of this technology has: the physical quantity that can only observation sensor gathers, can't observe current transformer control module internal data; Message transmission rate is not high, is difficult to satisfy transmission and the acceptance of mass data; The control function is less.
Number be 201110164930.7 Chinese invention patent such as application (patent), this disclosure of the Invention a kind of supervisory control system and wind generator system of wind electric converter.The supervisory control system of wind electric converter wherein comprises: after data acquisition unit, communication unit, converting unit and the host computer converting unit that be used for to gather the running status of wind electric converter and key parameter data is used for the running status of wind electric converter that data acquisition unit is sent by communication unit and key parameter data and is converted to the discernible data of host computer, send to host computer and show by host computer.But the described supervisory control system of this patent is independent of outside the inverter controller, can't monitor the inverter controller internal data, also can't adjust current transformer internal control algorithm; Do not relate to the technology of embedded OS and ethernet communication at Data processing, can't realize complicated control and communication function.
And for example, the main monitoring sensor sampling numerical value of supervisory control system described in this paper of the Li Dan of Beijing Jiaotong University master thesis " wind-force generating converter experiment porch Design of Monitoring and Control System " in 2007 and current transformer basic status amount can't be monitored the inverter controller internal data; Use PLC that current transformer is carried out some switching value controls, can't adjust the current transformer internal parameter control; Used the serial communication mode to communicate by letter with host computer, transmission rate is low, poor anti jamming capability.
Summary of the invention
For defective of the prior art, the purpose of this invention is to provide a kind of current transformer supervisory control system based on DSP and ARM and ethernet communication, this system can gather and send the data that the internal arithmetic of current transformer control module obtains, when mass data need to be sent to host computer from control module, solve the problem of control module disposal ability deficiency; Improve the control function of current transformer supervisory control system, can directly control controller algorithm by host computer.
For achieving the above object, the present invention is by the following technical solutions:
A kind of current transformer supervisory control system based on DSP and ARM and ethernet communication comprises such as lower module:
Data acquisition and modular converter, this module is used for the physical quantity (such as power network current, voltage etc.) of reality is converted to the needed digital quantity of control module and is sent to control module, and major function comprises the functions such as signals collecting, signal condition, AD conversion, signal isolation.
Control module, this module be used for current transformer control and with the ARM module communication, mainly realized by DSP and peripheral circuit thereof.
The ARM module is realized by arm processor and peripheral circuit thereof that mainly this module is used for communicating by letter with control module with host computer.This module operation embedded OS, use the multithreading processing capacity, communicate by letter with host computer by Ethernet, to processing and send from the data of control module, the data of accepting from host computer are made an explanation and process, and send related command to control module.
Upper computer module is used for and the ARM module communicates by Ethernet, and operation shows and operation interface.The software of this module can be write by multilingual, need to use unified ethernet communication protocol and data packet format with the ARM module.This module can issue various command to the ARM module according to user's operation, can show, analyzes and record the various data that receive.
Preferably, described control module comprises following two modules:
The controller algorithm module be used for to be carried out the main algorithm of current transformer control, can accept the data that send from each data acquisition and modular converter, and the computing of being correlated with and processing are sent control command to each current transformer rack.
The controller data communication module, be used for communicating with the ARM module, and can be mutual with control module, inner each variable of this module acquisition controller algoritic module, be sent to the ARM module, and can receive the order of ARM module, be configured according to the algorithm of order to the operation of controller algorithm inside modules.
Compared with prior art, the present invention has following beneficial effect:
1) control module and supervisory control system are combined closely, data that can the internal arithmetic of Real Time Monitoring control module in the control current transformer and the physical quantity that collects.
2) can directly control current transformer by supervisory control system, configuration control algolithm parameter is very easy to system debug and operation.
3) carry out and the communicating by letter and relevant data processing task of host computer with the ARM module, alleviated the processing pressure of control module, guaranteed the reliability of current transformer control.Control and the flexibility of communicating by letter have greatly been expanded in the application of embedded OS.
4) use Ethernet to communicate by letter with host computer, transmitted data amount is large, and has guaranteed the reliability of transfer of data.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the structured flowchart of one embodiment of the invention.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Embodiment 1:
As shown in Figure 1, present embodiment provides a kind of current transformer supervisory control system based on DSP and ARM and ethernet communication to comprise: data acquisition and modular converter, control module, ARM module, upper computer module.Data acquisition and modular converter pass through the needed various physical quantitys of transducer acquisition control module, and it is converted to digital quantity by analog quantity, are sent to control module by optical fiber.Control module be used for current transformer control and with the ARM module communication, mainly realized by DSP and peripheral circuit thereof.ARM module operation embedded OS, use the multithreading processing capacity, communicate by letter with host computer by Ethernet, to processing and send from the data of control module, the data of accepting from host computer are made an explanation and process, and send related command to control module.Upper computer module is used for and the ARM module communicates by Ethernet, and operation demonstration and operation interface, can issue various command to the ARM module according to user's operation, can show, analyzes and record the various data that receive.
In the present embodiment, the hardware using of controller algorithm module and ARM module the OMAPL137 processor of TI company, this processor is the DSP+ARM Duo-Core Architecture, control module and ARM module have also comprised the peripheral circuit for realizing that corresponding function designs.Controller algorithm module and controller data communication module run in the DSP/BIOS system of DSP, and communicating by letter of control module and ARM module uses DSPLINK to realize.Move built-in Linux operating system in the ARM module, use the TCP/IP ethernet communication protocol to communicate by letter with host computer.
In the present embodiment, the hardware of upper computer module is that a CPU is Pentium 3 or higher, and operating system is Windows 2000 or XP, at least the PC of 6.2GB hard disk.Host computer monitoring software has used the LabVIEW of NI company to write, and can realize the functions such as waveform observation, waveform analysis, waveform recording, transmission current transformer control command, transmission current transformer parameter configuration.
In the present embodiment, adopt one group of current transformer rack, comprise pusher side current transformer and net side converter, power is 750kw.
The course of work of present embodiment:
1. data acquisition and modular converter, control module, ARM module, host computer electrifying startup, and operation corresponding software.ARM module and host computer LabVIEW monitoring software connect by Ethernet, and host computer sends the control command configuration corresponding control parameter of current transformer and operational mode.
2. dc bus capacitor in the current transformer rack is carried out precharge, current transformer enters treats starting state.
3. host computer sends starting command, the control module control algolithm that brings into operation, and the output control signal, current transformer brings into operation.
4. the data such as given and feedback of each pi regulator in the data that in host computer, can real-time monitored send to each data acquisition and modular converter by the LabVIEW interface, the control algolithm.By observation, record and analysis waveform correlation, can assess exactly current transformer control effect, analyze the fault and the problem that occur.
Embodiment 2:
The difference of present embodiment and embodiment 1 is that the current transformer rack is increased to 4 groups by one group, adopts the parallel way operation.
The course of work of present embodiment:
1. data acquisition and modular converter, control module, ARM module, host computer electrifying startup, and operation corresponding software.ARM module and host computer LabVIEW monitoring software connect by Ethernet, and host computer sends the control command configuration corresponding control parameter of current transformer and operational mode.
2. dc bus capacitor in the current transformer rack is carried out precharge, current transformer enters treats starting state.
3. host computer sends starting command, the control module control algolithm that brings into operation, and the output control signal, current transformer brings into operation.
4. the data such as given and feedback of each pi regulator in the data that in host computer, can real-time monitored send to each data acquisition and modular converter by the LabVIEW interface, the control algolithm.By observation, record and analysis waveform correlation, can assess exactly current transformer control effect, analyze the fault and the problem that occur.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. current transformer supervisory control system based on DSP and ARM and ethernet communication is characterized in that comprising such as lower module:
Data acquisition and modular converter, this module comprise signals collecting, signal condition, AD conversion, signal isolation features, are used for the physical quantity of reality is converted to the needed digital quantity of control module and is sent to control module;
Control module, this module be used for current transformer control and with the ARM module communication, mainly realized by DSP and peripheral circuit thereof;
The ARM module, mainly realized by arm processor and peripheral circuit thereof, this module is used for communicating by letter with control module with host computer, this module operation embedded OS, use the multithreading processing capacity, communicate by letter with host computer by Ethernet, to processing and send from the data of control module, the data of accepting from host computer are made an explanation and process, and send related command to control module;
Upper computer module, be used for communicating by Ethernet with the ARM module, and operation shows and operation interface, this module monitors software and ARM module are used unified ethernet communication protocol and data packet format, can issue various command to the ARM module according to user's operation, can show, analyze and record the various data that receive.
2. the current transformer supervisory control system based on DSP and ARM and ethernet communication according to claim 1 is characterized in that, described control module comprises following two modules:
The controller algorithm module be used for to be carried out the main algorithm of current transformer control, can accept the data that send from each data acquisition and modular converter, and the computing of being correlated with and processing are sent control command to each current transformer rack;
The controller data communication module, be used for communicating with the ARM module, and can be mutual with control module, inner each variable of this module acquisition controller algoritic module, be sent to the ARM module, and can receive the order of ARM module, be configured according to the algorithm of order to the operation of controller algorithm inside modules.
3. the current transformer supervisory control system based on DSP and ARM and ethernet communication according to claim 2 is characterized in that, the hardware using of described controller algorithm module and ARM module the OMAPL137 processor of TI company.
4. the current transformer supervisory control system based on DSP and ARM and ethernet communication according to claim 2 is characterized in that, controller algorithm module and controller data communication module run in the DSP/BIOS system of DSP.
5. each described current transformer supervisory control system based on DSP and ARM and ethernet communication according to claim 1-4, it is characterized in that, communicating by letter of described control module and ARM module uses DSPLINK to realize, move built-in Linux operating system in the ARM module, use the TCP/IP ethernet communication protocol to communicate by letter with host computer.
6. each described current transformer supervisory control system based on DSP and ARM and ethernet communication according to claim 1-4, it is characterized in that, the monitoring software of described upper computer module has used the LabVIEW of NI company to write, and can realize waveform observation, waveform analysis, waveform recording, transmission current transformer control command, send current transformer parameter configuration function.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103604983A (en) * | 2013-11-23 | 2014-02-26 | 大连尚能科技发展有限公司 | System for controlling operation parameters of wind power current transformer based on DSP and ARM |
| CN107782988A (en) * | 2016-08-24 | 2018-03-09 | 株洲中车时代电气股份有限公司 | The test system and Efficiency test method of multiple-channel output AuCT |
| CN110661877A (en) * | 2019-09-30 | 2020-01-07 | 北京合康新能科技股份有限公司 | Frequency conversion speed regulation remote monitoring system based on embedded industrial Ethernet technology |
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| CN101630151A (en) * | 2009-08-14 | 2010-01-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Dual-CPU based circuit breaker intelligent controller |
| CN102157959A (en) * | 2011-03-30 | 2011-08-17 | 华南理工大学 | Solar photovoltaic contravariant generating system and operation method thereof |
| CN102510092A (en) * | 2011-12-19 | 2012-06-20 | 国网电力科学研究院 | Distributed real-time control unit of wind power converter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101630151A (en) * | 2009-08-14 | 2010-01-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Dual-CPU based circuit breaker intelligent controller |
| CN102157959A (en) * | 2011-03-30 | 2011-08-17 | 华南理工大学 | Solar photovoltaic contravariant generating system and operation method thereof |
| CN102510092A (en) * | 2011-12-19 | 2012-06-20 | 国网电力科学研究院 | Distributed real-time control unit of wind power converter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604983A (en) * | 2013-11-23 | 2014-02-26 | 大连尚能科技发展有限公司 | System for controlling operation parameters of wind power current transformer based on DSP and ARM |
| CN107782988A (en) * | 2016-08-24 | 2018-03-09 | 株洲中车时代电气股份有限公司 | The test system and Efficiency test method of multiple-channel output AuCT |
| CN110661877A (en) * | 2019-09-30 | 2020-01-07 | 北京合康新能科技股份有限公司 | Frequency conversion speed regulation remote monitoring system based on embedded industrial Ethernet technology |
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