CN204014208U - Intelligent flame signal imitation device - Google Patents
Intelligent flame signal imitation device Download PDFInfo
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- CN204014208U CN204014208U CN201420436930.7U CN201420436930U CN204014208U CN 204014208 U CN204014208 U CN 204014208U CN 201420436930 U CN201420436930 U CN 201420436930U CN 204014208 U CN204014208 U CN 204014208U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
Intelligence fire inspection signal imitation device, it comprises, high-brightness LED lamp and the constant current source driving circuit that is connected high-brightness LED lamp, with the in-phase voltage amplifying circuit that the input of described constant current source driving circuit is connected, the DAC output circuit of the single-chip microcomputer being connected with the input of in-phase voltage amplifying circuit; The analog voltage of single-chip microcomputer DAC output circuit output is controlled the output of constant current source driving circuit constant-current source after amplifying by in-phase amplification circuit, control the forward current that flows through high-brightness LED lamp, thereby controls the luminous of high-brightness LED lamp.The utility model can be simulated the state of combustion flame in boiler furnace more really, more needs to produce various waveforms, is applicable to fire and examines the detection needs to fire inspection in the research and development test of product, production test.
Description
Technical field
The utility model relates to a kind of light supply apparatus, particularly relates to intelligent flame signal imitation device, a kind of light supply apparatus that can produce various waveforms that has for detection of flame detector.
Background technology
Flame detector is the key equipment of coal-fired power plant, combustion gas, oil fired boiler Furnace Safeguard Supervisory System.Its effect detects combustion conditions in real time according to the physical characteristic of flame, once flame combustion state, do not meet normal conditioned disjunction flame-out, press certain way output signal, logic Rule of judgment as fault alarm or FSSS, while guaranteeing boiler furnace fire extinguishing, stop fuel supply, prevent that inflammable substance from building up in burner hearth or pipeline, detonation occurs and cause even the bursting of boilers, therefore research and to understand product quality and the reliability of flame detector very importantly existing.Guarantee flame detector product quality, can differentiate that the tester of flame detector quality is very important too, particularly analog light source.Current laboratory, flame detector factory, the analog light source of test flame detector, the several method below general employing.
1) adopt ordinary incandescent lamp, because ordinary incandescent lamp adopts single phase alternating current power supply power supply, if electrical network produces fluctuation, will directly affect the light intensity of sending out of incandescent lamp.Stability and the precision of impact test.In addition, because incandescent lamp adopts power frequency 50Hz AC-powered, after the photoelectric sensor of flame detecting probe, the signal frequency of output is 100Hz, and the interior combustion flame of boiler is generally at 6Hz～200Hz conventionally.Therefore, adopt incandescent lamp as light source, the frequency of test is single, and the spreadability of test is inadequate.
2) adopt the naked light light sources such as candle, lighter or kerosene stove.Adopt this type of light source to have specific (special) requirements to test environment, light intensity is wayward, and the flicker frequency of flame also cannot regulate, and accurate quantification test data can not be provided.
3) adopt existing fire check probe test signal station, although can select different frequencies, and different intensity, is all standard sine wave under the same time, can not simulated combustion boiler in the stack of unlike signal.
Defect and deficiency that above-mentioned various flame detector light source exists, affected the test effect of flame detecting probe greatly.As the light source of flame detection detector, the signal of energy simulated field boiler combustion, and intensity is adjustable, the checking of seeing fiery function to fire inspection product, and quantification test is offered help.
In intelligent control device, adopt single-chip microcomputer output DAC signal, control constant-current source circuit, control the forward current of high-brightness LED lamp.Because LED intensity is directly proportional to its forward current conventionally.The electric current of LED is flow through in control, has just controlled the luminous intensity of LED.Because the frequency range of boiler combustion is 6Hz～200Hz, the output response speed of the DAC module of the single-chip microcomputer of employing can meet the requirement of 200Hz.In single-chip microcomputer, by USART, read the data file that need to produce different wave that PC sends over, thereby produce different waveforms.Each file value in equal proportion Update Table file obtains big or small, can realize same signal, the adjusting of varying strength.
Summary of the invention
The purpose of this utility model is to provide a kind of flare up fire simulation light source device of intelligence, can simulate more really the state of combustion flame in boiler furnace, more need to produce various waveforms, be applicable to fire and examine the detection needs to fire inspection in the research and development test of product, production test.
For achieving the above object, the technical solution of the utility model is:
Intelligence fire inspection signal imitation device, it comprises, high-brightness LED lamp and the constant current source driving circuit that is connected high-brightness LED lamp, with the in-phase voltage amplifying circuit that the input of described constant current source driving circuit is connected, the DAC output circuit of the single-chip microcomputer being connected with the input of in-phase voltage amplifying circuit; The analog voltage of single-chip microcomputer DAC output circuit output is controlled the output of constant current source driving circuit constant-current source after amplifying by in-phase amplification circuit, control the forward current that flows through high-brightness LED lamp, thereby controls the luminous of high-brightness LED lamp.
Further, described constant current source driving circuit comprises amplifier feedback circuit, current sampling resistor R8, current drives field effect transistor and reverse fly-wheel diode; This amplifier feedback circuit comprises single amplifier operational amplifier, and its positive input connects the output of described in-phase amplification circuit, and current sampling resistor R8 is series at this operational amplifier reverse input end loop; Current drives fet gate is connected in series the output that is connected in this operational amplifier after a current-limiting resistance R6; High-brightness LED lamp series limiting resistor R7, in parallel with reverse sustained diode 1, this parallel circuits is connected in the drain electrode of current drives field effect transistor, and current drives field effect transistor source electrode is connected in the reverse input end loop of the single amplifier operational amplifier that meets current sampling resistor R8.
Again, described in-phase amplification circuit is amplifier in-phase amplification circuit.
In addition, described single-chip microcomputer is provided with the USART mouth of realizing communication with PC and reading light intensity data and curves from PC.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model intelligence fire inspection signal imitation device.
Embodiment
Referring to Fig. 1, intelligence fire inspection signal imitation device of the present utility model, it comprises, high-brightness LED lamp D2 and the constant current source driving circuit 10 that is connected high-brightness LED lamp D2, with the in-phase voltage amplifying circuit 20 that the input of described constant current source driving circuit 10 is connected, the DAC output circuit of the single-chip microcomputer 3 being connected with the input of in-phase voltage amplifying circuit 2; The analog voltage of single-chip microcomputer 30DAC output circuit output is controlled the output of constant current source driving circuit 10 constant-current sources after amplifying by in-phase amplification circuit 2, control the forward current that flows through high-brightness LED lamp D2, thereby control the luminous of high-brightness LED lamp D2.
Further, described constant current source driving circuit 10 comprises amplifier feedback circuit, current sampling resistor R8, current drives field effect transistor Q1 and reverse sustained diode 1; This amplifier feedback circuit comprises single amplifier operational amplifier, and its positive input connects the output of described in-phase amplification circuit 20, and current sampling resistor R8 is series at this operational amplifier reverse input end loop; Current drives field effect transistor Q1 grid is connected in series the output that is connected in this operational amplifier after a current-limiting resistance R6; High-brightness LED lamp D2 series limiting resistor R7, in parallel with reverse sustained diode 1, this parallel circuits is connected in current drives field effect transistor Q1 drain electrode, and current drives field effect transistor Q1 source electrode is connected in the reverse input end loop of the single amplifier operational amplifier that meets current sampling resistor R8.
Again, described in-phase amplification circuit 20 is conventional amplifier in-phase amplification circuit.
In addition, described single-chip microcomputer 30 is provided with the USART mouth of realizing communication with PC and reading light intensity data and curves from PC.
In the present embodiment, single-chip microcomputer is selected the C8051F330 chip of Silab company, and this chip carries USART mouth, DAC mouth.Single-chip microcomputer treatment cycle is 24.5MHz, and the refresh cycle of DAC is 5us, can meet the requirement of 200Hz, and wherein increasing C1 is 0.1uF, is decoupling capacitor.
USART level RS 232 level, the SN65C3232E of employing TEXAS INSTRUMENTS company, wherein C3～C6 is charge pump electric capacity, its value is all 0.1uF.R1 and R2 are current-limiting resistance, and value is 51 Ω.
Single amplifier CA3140 in in-phase voltage amplifying circuit 20, the decoupling capacitor that wherein C7 is 0.1uF, and R3～R5 is all 10K Ω, forms in-phase amplification circuit.
In constant current source driving circuit 10, adopt single amplifier CA3140 to form Voltage Feedback, drive the current-limiting resistance R6 of field effect transistor, value is 1K Ω, current sampling resistor R8, and value is 49 Ω, current drives field effect transistor Q1 model is BCX56; Oppositely sustained diode 1 model is IN4148, and current-limiting resistance R7 value is 510 Ω; High-brightness LED lamp D2, according to the difference of selecting flame detecting probe type, selects the highlighted LED of different wave length.As, the flame detecting probe of infrared model, the highlighted LED that Wavelength-selective is 970nm.
Claims (4)
1. intelligence fire is examined signal imitation device, it is characterized in that, comprise, high-brightness LED lamp and the constant current source driving circuit that is connected high-brightness LED lamp, with the in-phase voltage amplifying circuit that the input of described constant current source driving circuit is connected, the DAC output circuit of the single-chip microcomputer being connected with the input of in-phase voltage amplifying circuit; The analog voltage of single-chip microcomputer DAC output circuit output is controlled the output of constant current source driving circuit constant-current source after amplifying by in-phase amplification circuit, control the forward current that flows through high-brightness LED lamp, thereby controls the luminous of high-brightness LED lamp.
2. intelligence fire inspection signal imitation device as claimed in claim 1, is characterized in that, described constant current source driving circuit comprises amplifier feedback circuit, current sampling resistor (R8), current drives field effect transistor and reverse fly-wheel diode; This amplifier feedback circuit comprises single amplifier operational amplifier, and its positive input connects the output of described in-phase amplification circuit, and current sampling resistor (R8) is series at this operational amplifier reverse input end loop; Current drives fet gate is connected in series the output that is connected in this operational amplifier after a current-limiting resistance (R6); High-brightness LED lamp series limiting resistor (R7), in parallel with reverse fly-wheel diode (D1), this parallel circuits is connected in the drain electrode of current drives field effect transistor, and current drives field effect transistor source electrode is connected in the reverse input end loop of the single amplifier operational amplifier that connects current sampling resistor (R8).
3. intelligence fire inspection signal imitation device as claimed in claim 1, is characterized in that, described in-phase amplification circuit is amplifier in-phase amplification circuit.
4. intelligence fire inspection signal imitation device as claimed in claim 1, is characterized in that, described single-chip microcomputer is provided with the USART mouth of realizing communication with PC and reading light intensity data and curves from PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436930.7U CN204014208U (en) | 2014-08-04 | 2014-08-04 | Intelligent flame signal imitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436930.7U CN204014208U (en) | 2014-08-04 | 2014-08-04 | Intelligent flame signal imitation device |
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| Publication Number | Publication Date |
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| CN204014208U true CN204014208U (en) | 2014-12-10 |
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| CN201420436930.7U Active CN204014208U (en) | 2014-08-04 | 2014-08-04 | Intelligent flame signal imitation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105246224A (en) * | 2015-11-16 | 2016-01-13 | 大连理工大学 | Hearth flame simulation device |
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2014
- 2014-08-04 CN CN201420436930.7U patent/CN204014208U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105246224A (en) * | 2015-11-16 | 2016-01-13 | 大连理工大学 | Hearth flame simulation device |
| CN105246224B (en) * | 2015-11-16 | 2017-10-20 | 大连理工大学 | A kind of furnace flame analogue means |
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