CN205484660U - Little light sensor - Google Patents
Little light sensor Download PDFInfo
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- CN205484660U CN205484660U CN201620043307.4U CN201620043307U CN205484660U CN 205484660 U CN205484660 U CN 205484660U CN 201620043307 U CN201620043307 U CN 201620043307U CN 205484660 U CN205484660 U CN 205484660U
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Abstract
The utility model discloses a little light sensor, characterized by, including self -adaptation adjusting module, trigger circuit module, power conversion module, signal reception module, photoelectric conversion signal amplification module, data acquisition processing module and communication module, self -adaptation adjusting module is used for the the magnification according to the signal conditioning photoelectric conversion signal amplification module of data acquisition processing module collection, the trigger circuit module is used for sending the saltus step signal to data acquisition processing module. The utility model discloses the beneficial effect who reaches: this device is through drawing partial discharge shimmer signal under strong electromagnetic interference environment to become the signal of telecommunication and reasonable enlargeing with the light signal conversion who gathers, can reach real -time supervision electric power facility's trouble hidden danger, accident incubation period promptly to staff's early warning, in time service equipment and the purpose of improving operating environment, fine solution the problem of the real -time on -line monitoring of power equipment, early warning in advance.
Description
Technical field
The present invention relates to a kind of low-light level sensor, belong to arc light sensor and optical technical field.
Background technology
Power system is in During Process of Long-term Operation, electrical equipment usually because of equipment deficiency, insulation ag(e)ing, be stained or severe humiture environment and cause heating, shelf depreciation and the generation of light radiation flashover, and discharge energy is gradually increased, until insulating barrier thoroughly punctures forms strong arclight, and cause cabinet blast, burn or large area blackout, have a strong impact on the productive life of the properly functioning of power system and people.
Currently, power industry user has been fully recognized that the significant damage that electrical equipment fault brings, all common configuration protective relaying device in the switch cubicle of various electric pressures, and starts popularization and application arc light protection system.But, these broadly fall into passive protection afterwards, i.e. failure accident and have occurred and that and had resulted in certain damage, the salvo taked to intercept spreading on a large scale of accident.More advanced technological means, it should be active forewarning in advance, i.e. to the potential faults in switch cubicle, real time on-line monitoring is carried out by advanced technological means, accomplish early to find, early prevention, early safeguard, avoiding causing great failure accident owing to hidden danger continues to deteriorate, reduce economic loss, ensure safety power supply.Therefore, power supply reliability to be improved, this problem must have been resolved.
The light flashover caused due to shelf depreciation in network system, is a kind of important behaviour form of initial failure hidden danger, which contain abundant optical signature information.By the timely seizure to these characteristic phenomenon, can be as a Basic Criteria of electric network fault hidden danger early warning.Optical signal due to the faintest at light flashover optical signal, when the optical sensing of this technical field also cannot capture light flashover at present.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to provide a kind of low-light level sensor, shelf depreciation low level light signal is extracted under strong electromagnetic interference environment, realize just starting early warning mechanism when power equipment occurs electric discharge flashover, can reach to monitor in real time the potential faults of electric power facility, in accident incubation period i.e. to staff's early warning, timely maintenance equipment and improve the purpose of running environment.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that:
A kind of low-light level sensor, is characterized in that, including adaptive adjustment module, triggers circuit module, power transfer module, the signal receiving module being sequentially connected with, opto-electronic transforming signal amplification block, digital sampling and processing and communication module；Described signal receiving module is used for receiving faint light；Described opto-electronic transforming signal amplification block is for being converted into the signal of telecommunication by the faint optical signal received and amplifying；Described adaptive adjustment module regulates the amplification of opto-electronic transforming signal amplification block for whether exceeding, according to the signal of digital sampling and processing collection, the threshold value being previously set；Described threshold value is arranged according to the ambient light of different application occasion；Described digital sampling and processing is for photosignal and the acquisition process of triggering signal；When signal after described opto-electronic transforming signal amplification block amplifies exceedes the threshold value being previously set, described triggering circuit module is for sending skip signal to digital sampling and processing；Described communication module is for communicating with outer connected control system.
Aforesaid a kind of low-light level sensor, is characterized in that, described communication module is for communicating with the external world；Described power transfer module, for being the DC voltage of other numerical value by Power convert, provides running voltage to other each modules.
Aforesaid a kind of low-light level sensor, is characterized in that, in described adaptive adjustment module, setting and threshold value the most empirically value to amplification are previously set.
Aforesaid a kind of low-light level sensor, is characterized in that, described communication module uses RS485 communication drivers.
The beneficial effect that the present invention is reached: this device is by extracting shelf depreciation low level light signal under strong electromagnetic interference environment, and the optical signal of collection is converted into the signal of telecommunication and rationally amplifies, can reach to monitor in real time the potential faults of electric power facility, in accident incubation period i.e. to staff's early warning, timely maintenance equipment and improve the purpose of running environment.Thus the Automation Construction of power equipment and the process of safe operation, rise to the aggressive new stage in advance predicted from the troubleshooting afterwards that passiveness is passive, there is important impetus.The problem well solve power equipment real time on-line monitoring, giving warning in advance.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
This programme is that a faint light that is specifically designed for carries out detection collection amplification, it is integrated with signal receiving module, opto-electronic transforming signal amplification block, digital sampling and processing and communication module, triggering circuit module, and by built-in adaptive adjustment module, can automatically adapt to the ambient light in different application place, activation threshold value is set automatically, to adapt to different application demands, thus meet different user and for the measurement at various scenes and control requirement.
When specifically using, first signal receiving module receives faint light, and focuses on optical receiver.Optical receiver is converted into the signal of telecommunication and amplifies by opto-electronic transforming signal amplification block.Digital sampling and processing is responsible for photosignal, the collection triggering circuit module signal and processes, and is also accompanied with Modbus communication function.
When signal exceedes setting threshold value, trigger circuit module and can produce skip signal, pass to digital sampling and processing.Now, digital sampling and processing can send signal to adaptive gain adjustment module, adaptive adjustment module is according to the standard being previously set, and automatically adapt to the ambient light in different application place, it is once again set up activation threshold value, send signal to opto-electronic transforming signal amplification block, change the numerical value that signal amplifies.Such structure can adapt to different application demands, thus meet different user and for the measurement at various scenes and control requirement.
This programme uses RS485 communication drivers to communicate with outer connected control system.Meanwhile, this device is operated by accessing the power supply of DC12V, and is converted into 3.3V, 5V voltage by power transfer module and ensures the work of other each modules.
This programme can extract shelf depreciation low level light signal under strong electromagnetic interference environment, realize just starting early warning mechanism when power equipment occurs electric discharge flashover, can reach to monitor in real time the potential faults of electric power facility, in accident incubation period i.e. to staff's early warning, adopt remedial measures in time, maintenance equipment or improve running environment etc..Accident was eliminated in the budding period, it is to avoid the generation of major accident, quality and the efficiency of maintenance of equipment can be improved simultaneously, save the most unnecessary man power and material's waste.The problem well solving power equipment real time on-line monitoring.By using advanced low-light sensing technology, the main forms shelf depreciation light flashover that can realize the potential faults to various power levels switch cubicles carries out real-time online detection and early warning, thus the Automation Construction of power equipment and the process of safe operation, rise to the aggressive new stage in advance predicted from the troubleshooting afterwards that passiveness is passive, there is important impetus.Can accomplish early to find, early prevention, early safeguard, it is to avoid causing great failure accident owing to hidden danger continues to deteriorate, reduce economic loss, ensure safety power supply.The problem well solve power equipment real time on-line monitoring, giving warning in advance.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, on the premise of without departing from the technology of the present invention principle; can also make some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (4)
1. a low-light level sensor, is characterized in that, including adaptive adjustment module, triggers circuit module, power transfer module, the signal receiving module being sequentially connected with, opto-electronic transforming signal amplification block, digital sampling and processing and communication module；
Described signal receiving module is used for receiving faint light；
Described opto-electronic transforming signal amplification block is for being converted into the signal of telecommunication by the faint optical signal received and amplifying；
Described adaptive adjustment module regulates the amplification of opto-electronic transforming signal amplification block for whether exceeding, according to the signal of digital sampling and processing collection, the threshold value being previously set；Described threshold value is arranged according to the ambient light of different application occasion；
Described digital sampling and processing is for photosignal and the acquisition process of triggering signal；
When signal after described opto-electronic transforming signal amplification block amplifies exceedes the threshold value being previously set, described triggering circuit module is for sending skip signal to digital sampling and processing；
Described communication module is for communicating with outer connected control system.
A kind of low-light level sensor the most according to claim 1, is characterized in that, described communication module is for communicating with the external world；Described power transfer module, for being the DC voltage of other numerical value by Power convert, provides running voltage to other each modules.
A kind of low-light level sensor the most according to claim 1, is characterized in that, in described adaptive adjustment module, setting and threshold value the most empirically value to amplification are previously set.
A kind of low-light level sensor the most according to claim 2, is characterized in that, described communication module uses RS485 communication drivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043307.4U CN205484660U (en) | 2016-01-18 | 2016-01-18 | Little light sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043307.4U CN205484660U (en) | 2016-01-18 | 2016-01-18 | Little light sensor |
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| CN205484660U true CN205484660U (en) | 2016-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527553A (en) * | 2016-01-18 | 2016-04-27 | 南京中凯光电技术有限公司 | Low-light sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527553A (en) * | 2016-01-18 | 2016-04-27 | 南京中凯光电技术有限公司 | Low-light sensor |
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