CN202870206U - Fault oscilloscope of coal mine electric system - Google Patents
Fault oscilloscope of coal mine electric system Download PDFInfo
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- CN202870206U CN202870206U CN 201220526469 CN201220526469U CN202870206U CN 202870206 U CN202870206 U CN 202870206U CN 201220526469 CN201220526469 CN 201220526469 CN 201220526469 U CN201220526469 U CN 201220526469U CN 202870206 U CN202870206 U CN 202870206U
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Abstract
The utility model discloses a fault oscilloscope of a coal mine electric system. The device comprises a casing, the casing is internally provided with a plurality of DSP acquisition boards and a central processor board connected therewith through HPIs, wherein each DSP acquisition board is used for acquiring a voltage signal, a current signal and a switching value signal of the coal mine electric system, performing successive FFT calculation, calculating the fundamental wave of each signal and each subharmonic component, and transmitting calculation and processing results to the central processor board through the HPIs; and the central processor board is used for storing, and outputting and displaying in real time the received calculation and processing results, and when a remote access request sent by a dispatching center is received, the stored calculation and processing result is fed back to the dispatching center through communication interfaces. The device is simple in structure, high in integration level, and small in size.
Description
Technical field
The utility model relates to a kind of fault oscillograph, relates in particular to a kind of colliery Power System Fault Record device.
Background technology
Colliery Power System Fault Record device claims again " black box "; it is the basis of research Coal Mine Power Network; it also is the important evidence of estimating relay protection action behavior, analytic system and device properties and reason; present domestic colliery Power System Fault Record device mainly adopts microcomputer type fault oscillograph (being Foreground background model); this oscillograph foreground is collection plate, and industrial computer is adopted on the backstage.The microcomputer type fault oscillograph typically has the YS-8A type: background computer adopts industrial computer, operation Windows operating system, and front platform computer adopts singlechip chip, makes standard integrated circuit board form, by ISA, pci bus mode and front platform computer swap data.Yet complex structure, the volume of this Foreground background model are larger.
The utility model content
The purpose of this utility model is to provide a kind of colliery Power System Fault Record device of simple in structure, small volume.
For achieving the above object, the utility model provides a kind of colliery Power System Fault Record device, comprises a housing, and be provided with several DSP collection plates in the described housing and pass through the coupled central processing unit plate of HPI interface, wherein,
Each described DSP collection plate, the voltage signal, current signal and the switching value signal that are used for the collection of coal mine electric system, and it is carried out continuous FFT computing, calculate first-harmonic and the each harmonic component of each signal, and the computing result is sent to described central processing unit plate by described HPI interface;
Described central processing unit plate, the computing result who is used for receiving preserves and real-time output display, when receiving the remote access request that the dispatching center sends, the computing result who preserves is fed back to described dispatching center by communication interface.
Colliery of the present utility model Power System Fault Record device has adopted a plurality of DSP collection plates to add a central processing unit plate structure, and they are integrated in the housing, the foreground of this and existing colliery Power System Fault Record device is collection plate, the backstage adopts the tactic pattern of industrial computer to compare, it is simple in structure, integrated level is higher, and volume is also less.
Description of drawings
Fig. 1 is the electrical block diagram of colliery of the present utility model Power System Fault Record device;
Fig. 2 is the electrical block diagram of DSP collection plate in the Power System Fault Record device of colliery of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:
As shown in Figure 1, the colliery Power System Fault Record device of present embodiment comprises a housing (not shown in FIG.), is provided with several DSP collection plates in the housing and passes through the coupled central processing unit plate of HPI interface.Each DSP collection plate is used for voltage signal, current signal and the switching value signal of collection of coal mine electric system, and it is carried out continuous FFT computing, calculate first-harmonic and the each harmonic component of each signal, and the computing result is sent to the central processing unit plate by the HPI interface.The model of this central processing unit plate CPU is S3C2410, its computing result who is used for receiving preserves and real-time output display, when receiving the remote access request that the dispatching center sends, the computing result who preserves is fed back to the dispatching center by communication interface (such as RS232 interface, Ethernet interface etc.).
In conjunction with shown in Figure 2, each DSP collection plate comprises that electric current isolating transmitter, voltage isolating transmitter, switching value signal transmitting device, signal conditioning circuit, A/D converter, level shifting circuit, photoisolator and model are the DSP of TMS320LF2812.Wherein, the electric current isolating transmitter is used for the current signal by the electric system of current transformer collection of coal mine.The voltage isolating transmitter is used for the voltage signal by the electric system of voltage transformer (VT) collection of coal mine.Signal conditioning circuit is used for the voltage signal that current signal that the electric current isolating transmitter is obtained and voltage isolating transmitter obtain and carries out signal condition, the standard signal that corresponding conversion becomes A/D converter to identify.A/D converter is used for the standard signal of signal conditioning circuit output being carried out analog to digital conversion, the digital signal that output is corresponding.Level shifting circuit is used for the digital signal of A/D converter output is carried out the level match conversion, the data-signal that output DSP can identify.Switching value signal transmitting device is used for the switching value signal of collection of coal mine electric system.The switching value signal that photoisolator is used for switching value signal transmitting device is collected carries out exporting after the anti-interference process.DSP is used for the data-signal of the switching value signal of photoisolator output and level shifting circuit output is carried out continuous FFT computing, calculate first-harmonic and the each harmonic component of each signal, and the computing result is sent to the central processing unit plate by the HPI interface.
Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.
Claims (4)
1. a colliery Power System Fault Record device is characterized in that, comprises a housing, be provided with several DSP collection plates in the described housing and pass through the coupled central processing unit plate of HPI interface, wherein,
Each described DSP collection plate, the voltage signal, current signal and the switching value signal that are used for the collection of coal mine electric system, and it is carried out continuous FFT computing, calculate first-harmonic and the each harmonic component of each signal, and the computing result is sent to described central processing unit plate by described HPI interface;
Described central processing unit plate, the computing result who is used for receiving preserves and real-time output display, when receiving the remote access request that the dispatching center sends, the computing result who preserves is fed back to described dispatching center by communication interface.
2. colliery according to claim 1 Power System Fault Record device, it is characterized in that, each described DSP collection plate comprises electric current isolating transmitter, voltage isolating transmitter, switching value signal transmitting device, signal conditioning circuit, A/D converter, level shifting circuit, photoisolator and DSP, wherein
The electric current isolating transmitter is used for the current signal by the electric system of current transformer collection of coal mine;
The voltage isolating transmitter is used for the voltage signal by the electric system of voltage transformer (VT) collection of coal mine;
Signal conditioning circuit is used for the voltage signal that current signal that described electric current isolating transmitter is obtained and described voltage isolating transmitter obtain and carries out signal condition, the standard signal that corresponding conversion becomes A/D converter to identify;
A/D converter is used for the standard signal of described signal conditioning circuit output being carried out analog to digital conversion, the digital signal that output is corresponding;
Level shifting circuit is used for the digital signal of described A/D converter output is carried out the level match conversion data-signal that output DSP can identify;
Switching value signal transmitting device is for the switching value signal of collection of coal mine electric system;
Photoisolator, the switching value signal that is used for described switching value signal transmitting device is collected carries out exporting after the anti-interference process;
DSP, be used for the switching value signal of described photoisolator output and the data-signal of described level shifting circuit output are carried out continuous FFT computing, calculate first-harmonic and the each harmonic component of each signal, and the computing result is sent to described central processing unit plate by described HPI interface.
3. colliery according to claim 2 Power System Fault Record device is characterized in that the model of described DSP is TMS320LF2812.
4. colliery according to claim 3 Power System Fault Record device is characterized in that the CPU model of described central processing unit plate is S3C2410.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526469 CN202870206U (en) | 2012-10-15 | 2012-10-15 | Fault oscilloscope of coal mine electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526469 CN202870206U (en) | 2012-10-15 | 2012-10-15 | Fault oscilloscope of coal mine electric system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202870206U true CN202870206U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220526469 Expired - Fee Related CN202870206U (en) | 2012-10-15 | 2012-10-15 | Fault oscilloscope of coal mine electric system |
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| CN (1) | CN202870206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592549A (en) * | 2013-11-25 | 2014-02-19 | 淮南师范学院 | Intelligent power system fault recorder |
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2012
- 2012-10-15 CN CN 201220526469 patent/CN202870206U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592549A (en) * | 2013-11-25 | 2014-02-19 | 淮南师范学院 | Intelligent power system fault recorder |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131015 |