CN201069458Y - Lighting strike real time online monitoring system - Google Patents
Lighting strike real time online monitoring system Download PDFInfo
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- CN201069458Y CN201069458Y CNU2007201131049U CN200720113104U CN201069458Y CN 201069458 Y CN201069458 Y CN 201069458Y CN U2007201131049 U CNU2007201131049 U CN U2007201131049U CN 200720113104 U CN200720113104 U CN 200720113104U CN 201069458 Y CN201069458 Y CN 201069458Y
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Abstract
The utility model relates to a real-time on-line monitoring system for lightning strikes, which comprises a lightning current sensor arranged on a monitoring line and adapted to convert lightning signals into electrical signals, and a collection terminal connected with the lightning current sensor and connected with a data processing center via a communication interface. The collection terminal comprises a signal modulation module, a high-speed data sampling module, a FPGA control data processing module and a collection terminal CPU. Based on the lightning current sensor in combination with high-speed data sampling and real-time filter techniques, the utility model realizes the real-time, continuous and high-accuracy sampling of lightning waves with a sampling rate up to millions, thereby providing lightning parameters inducing true value, maximum value, duration and polarity. Based on the continuous monitoring, the utility model can avoid the missing detection of several lightning strikes.
Description
Technical field
The utility model relates to thunderbolt monitoring field, relates in particular to a kind of thunderbolt real time on-line monitoring system.
Background technology
The thunder and lightning disaster is classified as " one of ten kinds of the most serious disasteies " by United Nations, be called " the big public hazards of electronic age " by International Electrotechnical Commission.According to incompletely statistics, China every year is because of thunder and lightning disaster more than one hundred million units that cause any property loss.Along with the development of Chinese national economy and the raising of modernization level, particularly owing to the fast development of infotech, the extent of injury of thunder and lightning disaster and the economic loss that causes and social influence are increasing.Because the requirement of lightning protection, the market demand is to the equipment of the real-time scientific quantification monitoring of thunderbolt invasion, record.
Present thunderbolt detection technique generally all adopts induction integration acquisition mode, tie up on the loop that will test with an inductive head, the signal that induction is returned is delivered on the sampling circuit after by a suitable integrating circuit and is sampled, this sample loading mode can only be gathered the amplitude peak value of thunderbolt, and for the different waveform of rate of change, its error of introducing is different, and precision can't be protected, the concrete manifestation form that also can't obtain being struck by lightning (true value, ripple are capable, duration etc.); And adopt inductive head to adopt bundle watchman's wooden clapper formula, the degree of accuracy of installing is had relatively high expectations.
When relatively lacking for two thunderbolt time intervals simultaneously, because the integrated waveform of previous thunderbolt is not also finished discharge, below a thunderbolt at once come in and will detect, and sampling rate is lower, generally have only several K, along with the demand to the research of the evaluation of lightning strike accident, thunder and lightning invasion risk assessment and guard technology, each side such as data correction that lightning detection is located, original technology and product can't be realized.
Summary of the invention
The utility model provides a kind of and can realize the real time on-line monitoring system that is struck by lightning at deficiency of the prior art.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of thunderbolt real time on-line monitoring system, be included in the thunder-strike current sensor that lightning strike signals can be converted to electric signal that Monitoring Line is provided with, the acquisition terminal that is connected with the thunder-strike current sensor, described acquisition terminal connects data processing centre (DPC) by communication interface, and described acquisition terminal comprises signal condition module, high-speed data sample circuit module, FPGA control data processing module and acquisition terminal CPU:
Described signal condition module is used for the electric signal that the thunder-strike current sensor transmits is nursed one's health into the analog voltage signal of 0-2.5V;
Described high-speed data sample circuit module is under the control of FPGA, and the analog voltage signal that the signal condition module is transmitted continues high-speed sampling;
The data that described FPGA control data processing module is sent here high-speed data sample circuit module are passed through the fpga chip Real-Time Filtering, and deposit filtered thunderbolt data in the FPGA internal buffer;
After adding real-time markers, the data set that described acquisition terminal CPU is used to read the FPGA internal buffer deposits in the CPU memory block.
Adopt the thunder-strike current sensor, in conjunction with lasting high-speed sampling and Real-Time Filtering technology, realized for lightning waveform in real time, continue, high precision collecting, sampling rate generally can reach more than several M, thereby can access the parameters such as true value, maximal value, duration, polarity of thunderbolt.Employing continues to detect, and making continues to take place repeatedly to be struck by lightning can not omit phenomenon yet.
As preferably, described signal condition module is responsible for signal condition with high speed operation amplifier chip AD8041.
As preferably, described high-speed data sample circuit module is finished the high speed acquisition of lightning strike signals with high-speed a/d conversion chip THS1206.
As preferably, the signal that described FPGA control data processing module is sent here high-speed data sample circuit module with fpga chip XC3S250D is by the FPGA Real-Time Filtering, and the lasting high-speed sampling of control signal conditioning module.
As preferably, described acquisition terminal CPU comprises that CPU carries the ARM chip STR710 of the FLASH program space, data space and SRAM.
As preferably, described communication interface is 232 isolating interfaces or 485 isolating interfaces or XPORT module interface or GR47 module interface.Select different communication modes according to distinct interface, realize real-time transmitting function.
As preferably, described thunder-strike current sensor ring is located on the Monitoring Line.The mode that adopts ring to wear is located at the thunder-strike current sensor at Monitoring Line, and is more comprehensive during its monitoring, can ignore to the degree of accuracy requirement of installation site.
Description of drawings
Fig. 1 is the system principle diagram of present embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1, among the figure dotted line band direction of arrow be controlling party to, a kind of thunderbolt real time on-line monitoring system, be included in the thunder-strike current sensor 1 that Monitoring Line is provided with, with the acquisition terminal that is connected with thunder-strike current sensor 1, described acquisition terminal connects data processing centre (DPC) 9 by communication interface, described thunder-strike current sensor 1 converts lightning strike signals to electric signal, described acquisition terminal comprises signal condition module 2, high-speed data sample circuit module 3, FPGA data processing module 4, acquisition terminal CPU 5: described signal condition module 2 is used for the electric signal that thunder-strike current sensor 1 transmits is nursed one's health into the simulating signal of 0-2.5V; Described high-speed data sample circuit module 3 is under the control of FPGA, and the simulating signal that signal condition module 2 is transmitted continues high-speed sampling; The signal that 4 pairs of high-speed data sample circuits of described FPGA control data processing module module 3 is sent here passes through the fpga chip Real-Time Filtering, and deposits filtered thunderbolt data in the FPGA internal buffer; Deposit in the CPU memory block after the data set that described acquisition terminal CPU 5 is used to read the FPGA internal buffer adds real-time markers, carry out data management simultaneously.
In the present embodiment, described thunder-strike current sensor 1 ring is located on the Monitoring Line, after described thunder-strike current sensor 1 converts lightning strike signals to electric signal, send into described signal condition module 2, described signal condition module 2 is responsible for signal condition with high speed operation amplifier chip AD8041, the voltage signal that electric signal is become 0-2.5V is sent into high-speed data sample circuit module 3, described high-speed data sample circuit module 3 is finished the high speed acquisition of lightning strike signals with high-speed a/d conversion chip THS1206, it is the high speed acquisition of finishing under the control of the fpga chip of FPGA control data processing module this lightning strike signals, described fpga chip is XC3S250D, described XC3S250D chip carries out Real-Time Filtering to the data that read from THS1206 to be handled, be about to filter non-thunderbolt data, detect and will deposit in the buffer zone that the XC3S250D chip carries above the thunderbolt data of the threshold values that sets in advance, and notice acquisition terminal CPU5 reads, can notify CPU5 to read by the hardware interrupts mode, and the data to having read can be cleared out of buffer zone again automatically.
Described acquisition terminal CPU 5, comprise that CPU carries the ARM chip STR710 of the flash program space, data space and SRAM, CPU receives in the reading of data that fpga chip sends and has no progeny, initiatively read the data of FPGA buffer zone chip, the data storage area that deposits CPU oneself after the markers of current time on the data tape that reads in, and transmit data to data processing centre (DPC) by communication interface.
In the present embodiment, communication interface can be 232/485 photoelectricity isolating interface, also can be the XPORT module interface, perhaps GPRS module interface, select different communication modes according to distinct interface, as Ethernet, RS485, SMS, GPRS, CDMA etc.) be sent to data processing centre (DPC) 9 in real time and carry out analyzing and processing.
The thunderbolt real time on-line monitoring system has been finished thunderbolt invasion electric current real time on-line monitoring functions such as transmission of electricity (high and low pressure) circuit, information transmission lines.Realization is data in real time records such as the thunder-strike current that monitors, polarity, waveform, duration, and can carry out analyzing and processing by different communication modes (Ethernet, RS485, SMS, GPRS, CDMA etc.) transmitting data in real time center.
In a word, the above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (7)
1. thunderbolt real time on-line monitoring system, be included in the thunder-strike current sensor (1) that lightning strike signals can be converted to electric signal that Monitoring Line is provided with, and the acquisition terminal that is connected with thunder-strike current sensor (1), described acquisition terminal connects data processing centre (DPC) (9) by communication interface, it is characterized in that, described acquisition terminal comprises signal condition module (2), high-speed data sample circuit module (3), FPGA control data processing module (4), acquisition terminal CPU (5):
Described signal condition module (2) is used for the electric signal that thunder-strike current sensor (1) transmits is nursed one's health into the analog voltage signal of 0-2.5V;
Described high-speed data sample circuit module (3) is under the control of FPGA, and the analog voltage signal that signal condition module (2) is transmitted continues high-speed sampling;
The data that described FPGA control data processing module (4) is sent here high-speed data sample circuit module (3) are passed through the fpga chip Real-Time Filtering, and filtered thunderbolt data are deposited in the internal buffer of FPGA;
After adding real-time markers, the data set that described acquisition terminal CPU (5) is used to read the FPGA internal buffer deposits in the CPU memory block.
2. thunderbolt real time on-line monitoring system according to claim 1, described signal condition module (2) is responsible for signal condition with high speed operation amplifier chip AD8041.
3. thunderbolt real time on-line monitoring system according to claim 1, described high-speed data sample circuit module (3) are finished the high speed acquisition of lightning strike signals with high-speed a/d conversion chip THS1206.
4. thunderbolt real time on-line monitoring system according to claim 1, described FPGA control data processing module (4) is passed through the FPGA Real-Time Filtering with the signal that fpga chip XC3S250D sends here high-speed data sample circuit module (3), and the lasting high-speed sampling of control signal conditioning module (2).
5. thunderbolt real time on-line monitoring system according to claim 1 is characterized in that, described acquisition terminal CPU (5) comprises that CPU carries the ARM chip STR710 of the FLASH program space, data space and SRAM.
6. thunderbolt real time on-line monitoring system according to claim 1 is characterized in that, described communication interface is 232 isolating interfaces or 485 isolating interfaces or XPORT module interface or GR47 module interface.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described a kind of thunderbolt real time on-line monitoring systems, it is characterized in that described thunder-strike current sensor (1) ring is located on the Monitoring Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201131049U CN201069458Y (en) | 2007-08-13 | 2007-08-13 | Lighting strike real time online monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201131049U CN201069458Y (en) | 2007-08-13 | 2007-08-13 | Lighting strike real time online monitoring system |
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| Publication Number | Publication Date |
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| CN201069458Y true CN201069458Y (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007201131049U Expired - Fee Related CN201069458Y (en) | 2007-08-13 | 2007-08-13 | Lighting strike real time online monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963634A (en) * | 2010-09-25 | 2011-02-02 | 中国人民解放军理工大学 | Integrated optical isolation lightning electric field measurement apparatus |
| CN104360238A (en) * | 2014-11-20 | 2015-02-18 | 国家电网公司 | Lightning stroke detection method of electric transmission line |
| CN106468733A (en) * | 2015-08-17 | 2017-03-01 | 中国电力科学研究院 | A kind of monitoring system of extra-high voltage Lightning Incoming Wave and its monitoring method |
-
2007
- 2007-08-13 CN CNU2007201131049U patent/CN201069458Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963634A (en) * | 2010-09-25 | 2011-02-02 | 中国人民解放军理工大学 | Integrated optical isolation lightning electric field measurement apparatus |
| CN104360238A (en) * | 2014-11-20 | 2015-02-18 | 国家电网公司 | Lightning stroke detection method of electric transmission line |
| CN106468733A (en) * | 2015-08-17 | 2017-03-01 | 中国电力科学研究院 | A kind of monitoring system of extra-high voltage Lightning Incoming Wave and its monitoring method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20140813 |
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| EXPY | Termination of patent right or utility model |