CN106646309A - Precision detection device of arc light detector - Google Patents
Precision detection device of arc light detector Download PDFInfo
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- CN106646309A CN106646309A CN201610999862.9A CN201610999862A CN106646309A CN 106646309 A CN106646309 A CN 106646309A CN 201610999862 A CN201610999862 A CN 201610999862A CN 106646309 A CN106646309 A CN 106646309A
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- 238000001514 detection method Methods 0.000 title abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims description 2
- 230000036581 peripheral resistance Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 231100000289 photo-effect Toxicity 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
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- 238000002485 combustion reaction Methods 0.000 description 1
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- 238000004880 explosion Methods 0.000 description 1
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
Abstract
The invention discloses a precision detection device of an arc light detector. The precision detection device comprises an adjustable light source, a light control program module, a standard photoelectric detector, an ADC conversion program module, a DSP signal processing program module and a display program module; and the adjustable light source, the light control program module, the standard photoelectric detector, the ADC conversion program module, the DSP signal processing program module and the display program module are mounted in a test box, and are connected in a circuit manner to form the precision detection device of the arc light detector. The photoelectric detector converts an optical signal to an electric signal, sends the electric signal to the signal processing module for processing, and displays a corresponding illuminance value. The precision detection device is simple in the circuit, smooth in operation, rapid in detection and accurate in measurement.
Description
Technical field
The present invention relates to a kind of accuracy detecting device of arc detector, belongs to automatic monitoring control technology field.
Background technology
Fault electric arc is a kind of accident of frequent property in switch cubicle.Electric arc can by various effects discharge huge sound,
The energy such as light, electricity, heat, the lighter burns bus, switchgear is scrapped, transformer damage；Severe one causes combustion explosion, causes
Personal injury, causes immeasurable economic loss.Arc light is detection arc short-circuit most fast and effectively method, in the world at first
The protection system entered is the arc light protecting system detected based on arclight of the developments such as Finland, the U.S..Therefore arclight is carried out
Detection, the feature for studying arclight has very important significance.Arc detector includes arc light detecting head, optical cable and light electrical resistivity survey
Survey device.Arc light detecting head not only can receive accident generation arc light, can with self-inspection trigger light driving under give sensor
Send self-test signal.How quickly arc detector belongs to optical signal detecting, it is ensured that arc detector precision is very important,
The precision of effectively inspection arc detector is a necessary job.
The content of the invention
The purpose of the present invention is：A kind of accuracy detecting device of arc detector is provided,
Circuit is simple, operates steadily, and detection is quick, and scene shows, measurement is accurate.
The present invention technical solution be：The detection means includes tunable light source, the light control being arranged in proof box
Program module processed, standard photodetector, ADC conversion program modules, DSP signal handlers module and display program module,
Tunable light source, signal light control program module, standard photodetector, ADC conversion program modules, DSP signal handler modules
Accuracy detecting device with display program module connects and composes arc detector according to circuit mode, converts optical signals into the signal of telecommunication
It is sent in signal processing module and processes, and corresponding illuminance numerical value is shown.
Its operation principle is：The probe of arc detector to be detected is put in proof box, the spy of standard photodetector
The probe of head and arc detector to be detected receives the light that light source sends simultaneously；Standard probe receives light and is first converted into mould
Intend the signal of telecommunication, then analog electrical signal is converted into into digital electric signal through ADC, and be entered into DSP process, at algorithm
Corresponding intensity of illumination numerical value is included on LCD screen after reason；The intensity of illumination that the probe of standard photodetector is obtained
The intensity of illumination data that the probe of data and arc detector to be detected is obtained are compared, if error is larger, arc light to be measured
Detection accuracy is inadequate.
Circuit of the present invention is simple, operates steadily, and detection is quick, and scene shows, measurement is accurate.
Description of the drawings
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the photoelectricity transformation principle figure of Fig. 1.
Fig. 3 is the photoelectric switching circuit figure of Fig. 1.
Fig. 4 is ADC the and DSP Principle of Communication figures of Fig. 1.
Specific embodiment
Technical scheme is further illustrated below in conjunction with the accompanying drawings, but is not to be construed as the limit to technical scheme
System.
As shown in figure 1, it includes tunable light source, signal light control program module, standard photodetector, ADC converse routines
Module, DSP signal handlers module and display program module, tunable light source, signal light control program module, standard photodetection
Device, ADC conversion program modules, DSP signal handlers module and display program module connect and compose arc light and visit according to circuit mode
The accuracy detecting device of device is surveyed, standard photodetector converts optical signals into the signal of telecommunication and is sent to process in signal processing module,
And show corresponding illuminance numerical value.
Wherein, each electronic devices and components function is as follows：
Standard photodetector：Using radiation detector made by external photoeffect or inner photoeffect, also referred to as photoelectric type detection
Device；Electronics in detector directly absorbs the energy of photon, makes kinestate change and produces the signal of telecommunication, is usually used in detection
Infra-red radiation and visible ray.
ADC conversion program modules：Continuously varying analog signal is converted to into discrete digital signal, in order to ours
Digital display circuit is calculated, is processed, is stored, controlled, shown.
DSP320F2812：The DSP products of a TI companies, for carrying out the product of Digital Signal Processing, by ADC
The digital signal for obtaining is processed according to algorithm, then is compared with the data in data base, obtains corresponding illumination strong
Angle value；In addition, this DSP also serves as CPU the power of light source is controlled by signal light control program module, so it is easy to repeatedly survey
Measure to obtain more accurately result.
LCDs：It is connected on outward on DSP, carries out the display of data.
Its specific workflow is：DSP control light sources send the light of some strength, and standard photodetector receives light
And it is converted into current signal（Analogue signal）, the simulation letter that ADC conversion program modules collect standard photodetector
Number digital signal is converted to, DSP320F2812 is again processed these digital signals, and by algorithm the light that light source sends is obtained
Intensity, Optical power values are displayed in LCDs；Photodetector to be detected also receives these light, and pass through simultaneously
Corresponding illumination intensity value is obtained after conversion；Illumination intensity value and standard photodetector that photodetector to be detected is obtained
The standard figures for obtaining is compared, and just knows the precision of Devices to test.
As shown in Fig. 2 all operationss of ADC are all carried out by ADC depositors；ADC register mappings are to peripheral frame 1
Address space, address realm is 0x0000-7100 to 0x0000-711F, by ADC control registers, ADC passages select
Select sequence control register, ADC transformation result depositors, ADC status registers, ADC maximum ALT-CH alternate channel number depositor or
ADC auto-sequencings status register is constituted, entirely 16 bit registers.
ADC conversion program modules are 12 bit resolutions, the analog-digital converter with pipeline organization, and it is configured
For the module of 16 passages, and it is set to subsequent samples, it is ensured that ADC input voltages are 0 ~ 3V；There are two sequencers,
It is configured to 8 independent State Sequencers of double sequence i.e. two；These can be by configuring the control register of ADC
Complete；16 tunnel analog datas are sent to ADC kernels after simulation multiplexer and sampling holder, the result storage obtained after conversion
In 16 result register 0-15, reading the numerical value in result register and calculating is included on liquid crystal display screen after process；
System clock obtains clock signal after system control/high-frequency clock calibrater during the clock signal of ADC.
As shown in figure 3, the concrete connection of photoelectric switching circuit is as follows：Photoelectric switching circuit includes gain adjustable amplifier
AD8330, low distortion difference ADC driver AD8138 and resistance capacitance peripheral circuit components and parts；Optical signal is by AD8330's
4th, 5 pins access the change-over circuit, and AD8330 is increased by peripheral resistance R22, electric capacity C18, C19, C20, C21, C22, C23 composition
The adjustable amplifying circuit of benefit, AD8330 is connected by resistance R23, R24 and AD8138, and is connected to by resistance R27, R28
4,5 pins of AD8138,4,5 pins of AD8138 connect respectively resistance R25, R26, the stable current signal of output linearity.
As shown in figure 4, being the concrete communication connection of ADC and DSP：PD0-PD15 pins connection net of dsp processor
The D0-D15 of network chip, carries out parallel data interaction；Network chip /CS pins be chip select pin, also with the control of dsp processor
Pin connection processed, realizes chip select functionality；Network chip INT pins are connected with resistance R60, extraneous 3.3V level, realize reset work(
Energy；Other pins of network chip are connected the peripheral circuit needed for composition with electric capacity C70, C76, C78, resistance R105, common real
Existing network communication function；TX+, TX- of network chip, RX+, RX- and external physical port RJ45 connect, and constitute interface circuit.
Claims (3)
1. the accuracy detecting device of arc detector, is characterized in that：It includes tunable light source, the light control being arranged in proof box
Program module processed, standard photodetector, ADC conversion program modules, DSP signal handlers module and display program module,
Tunable light source, signal light control program module, standard photodetector, ADC conversion program modules, DSP signal handler modules
With the accuracy detecting device that display program module connects and composes arc detector according to circuit mode.
2. the accuracy detecting device of arc detector according to claim 1, is characterized in that：The ADC converse routines mould
The concrete connection of block is as follows：Including gain adjustable amplifier AD8330, low distortion difference ADC driver AD8138 and resistance electricity
Hold peripheral circuit components and parts；Optical signal is accessed by 4,5 pins of AD8330, AD8330 by peripheral resistance R22, electric capacity C18,
C19, C20, C21, C22, C23 constitute the amplifying circuit of adjustable gain, and AD8330 is connected by resistance R23, R24 and AD8138,
And 4,5 pins of AD8138 are connected to by resistance R27, R28,4,5 pins of AD8138 connect respectively resistance R25, R26, defeated
Cutting edge aligned stable current signal.
3. the accuracy detecting device of arc detector according to claim 1, is characterized in that：Described ADC and DSP
Concrete communication connection it is as follows：PD0-PD15 pins of dsp processor connect the D0-D15 of network chip, carry out parallel data
Interaction；Network chip /CS pins be chip select pin, be also connected with the controlling switch of dsp processor, realize chip select functionality；Net
Network chip I NT pin is connected with resistance R60, extraneous 3.3V level, realizes reset function；Other pins of network chip and electric capacity
Peripheral circuit needed for C70, C76, C78, resistance R105 connection compositions, realizes network communication function jointly；The TX of network chip
+, TX-, RX+, RX- and external physical port RJ45 connect, and constitutes interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999862.9A CN106646309A (en) | 2016-11-14 | 2016-11-14 | Precision detection device of arc light detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999862.9A CN106646309A (en) | 2016-11-14 | 2016-11-14 | Precision detection device of arc light detector |
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| CN106646309A true CN106646309A (en) | 2017-05-10 |
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| CN201610999862.9A Pending CN106646309A (en) | 2016-11-14 | 2016-11-14 | Precision detection device of arc light detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821359A (en) * | 2020-12-25 | 2021-05-18 | 深圳供电局有限公司 | Protection system for power line, circuit breaker, and protection method for power line |
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|---|---|---|---|---|
| CN103219997A (en) * | 2013-02-06 | 2013-07-24 | 北京空间机电研究所 | Multispectral multi-focal-plane splicing infrared detector control and signal sampling circuit |
| CN104198867A (en) * | 2014-09-22 | 2014-12-10 | 山东中瑞电气有限公司 | Testing method and testing equipment for arc protection device |
| CN204464972U (en) * | 2015-01-23 | 2015-07-08 | 厦门华电开关有限公司 | A kind of arc light protective device |
| CN105259441A (en) * | 2015-10-26 | 2016-01-20 | 江苏省电力公司淮安供电公司 | Detection apparatus and method for switchgear primary equipment arc light warning and protection device |
| CN206209087U (en) * | 2016-11-14 | 2017-05-31 | 国网江苏省电力公司淮安供电公司 | The accuracy detecting device of arc detector |
-
2016
- 2016-11-14 CN CN201610999862.9A patent/CN106646309A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219997A (en) * | 2013-02-06 | 2013-07-24 | 北京空间机电研究所 | Multispectral multi-focal-plane splicing infrared detector control and signal sampling circuit |
| CN104198867A (en) * | 2014-09-22 | 2014-12-10 | 山东中瑞电气有限公司 | Testing method and testing equipment for arc protection device |
| CN204464972U (en) * | 2015-01-23 | 2015-07-08 | 厦门华电开关有限公司 | A kind of arc light protective device |
| CN105259441A (en) * | 2015-10-26 | 2016-01-20 | 江苏省电力公司淮安供电公司 | Detection apparatus and method for switchgear primary equipment arc light warning and protection device |
| CN206209087U (en) * | 2016-11-14 | 2017-05-31 | 国网江苏省电力公司淮安供电公司 | The accuracy detecting device of arc detector |
Non-Patent Citations (1)
| Title |
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| 高岩等: "嵌入式电弧光保护及监控系统设计", 《自动化技术与应用》 * |
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| CN112821359A (en) * | 2020-12-25 | 2021-05-18 | 深圳供电局有限公司 | Protection system for power line, circuit breaker, and protection method for power line |
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