CN205958120U - High -speed highly reliable mining flame sensor - Google Patents
High -speed highly reliable mining flame sensor Download PDFInfo
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- CN205958120U CN205958120U CN201621038744.3U CN201621038744U CN205958120U CN 205958120 U CN205958120 U CN 205958120U CN 201621038744 U CN201621038744 U CN 201621038744U CN 205958120 U CN205958120 U CN 205958120U
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- highly reliable
- flame sensor
- photoelectric switching
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Abstract
The utility model provides a high -speed highly reliable mining flame sensor, include the voltage stabilizing circuit who is connected with power electricity, the drive circuit that steps up that is connected with constant voltage power supply alternaties circuit connection's photoelectric switching circuit with stepping up, with photoelectric converter circuit connection's processing circuit, with signal processing circuit connection be signal output circuit and with photoelectric converter circuit connection's ultraviolet ray constant voltage power supply 2, the utility model discloses the ultraviolet ray magnetron who is connected with photoelectric switching circuit is 4. The utility model discloses a 4 individual ultraviolet ray magnetron surveys simultaneously to through the output control of the drive circuit that steps up, photoelectric switching circuit and processing circuit realization signal, response speed is fast, and sensitive high, stability is good, has high -speed highly reliable characteristics.
Description
Technical field
The utility model belongs to Safety of Coal Mine Production apparatus field and in particular to mining flame sensor.
Background technology
Mining flame sensor is primarily used for underground coal mine the hazardous area of gas and coal-dust explosion, for fire inspection
Survey, particularly gas conveyer tube fire defector.When flare up fire is detected, go to drive explosion suppression device or explosion arrestment valve to flutter
Go out, block flame transmission.This is accomplished by flame sensor and has ultrahigh speed, high sensitivity, high reliability.Require according to standard
Sensitivity：May detect 5m distant place 1cd flame；Response time：≤5ms.
Ultraviolet phototube only responds to the ultraviolet in 185 ~ 260nm narrow range, and to other spectral ranges
Light insensitive, the ultraviolet in flame can be detected using it.Reach under atmosphere the sunshine on ground and non-
Purple material is all higher than 300nm as the optical wavelength that sends of electric light source of glass bulb thoroughly, therefore ultraviolet in the 220m-280nm of flame detecting
Wave band belongs to solar spectrum blind area（Day-old chick）.Ultraviolet flame Detection Techniques, make system avoid lamp the most powerful -- too
The complex background that sun causes so that the burden of information processing in systems considerably reduces, so reliability is higher.In addition it is light
Sub- detection means, thus signal to noise ratio is high, has atomic Testing of Feeble Signals ability, in addition, it also has the reaction time and is exceedingly fast
Feature.Compared with Infrared Detectors, ultraviolet detector is more reliable, and has high sensitivity, height output, high response speed
Feature.But ultraviolet phototube has noise, its noise and sensitivity are conflicting parameters.In general, need to be by spirit
Sensitivity controls in a suitable level, and too high sensitivity is very difficult to the low noise index of device, exists certain
Rate of false alarm.So that based on existing or new development detection principle method, by improving the methods such as Signal sampling and processing
To improve systematic function.
Existing product typically adopts single tube, two-tube ultraviolet, infrared or ultraviolet/infrared compound flame sensor, response speed
Degree wants 1 second at the soonest.
Content of the invention
The purpose of this utility model is to provide a kind of highly reliable mining flame sensor of high speed so that flame detector meets
May detect 5m distant place 1cd flame；Response time≤5ms and reliable and stable.
The technical scheme that the utility model is used is:A kind of highly reliable mining flame sensor of high speed, including with power supply
The mu balanced circuit of electrical connection, the booster driving circuit being connected with voltage-stabilized power supply, the opto-electronic conversion electricity being connected with boost conversion circuit
Road, the signal processing circuit being connected with optical-electrical converter circuit, be connected with signal processing circuit be signal output apparatus and with light
The ultraviolet phototube that electric transducer circuit connects, the ultraviolet phototube that the utility model is connected with photoelectric switching circuit is 4.
The utility model is detected using 4 ultraviolet phototubes simultaneously, and by booster driving circuit, photoelectric switching circuit and
Signal processing circuit realizes the output control of signal, fast response time, sensitive height, good stability, has the highly reliable spy of high speed
Point.
Brief description
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is boosting driving of the present utility model, opto-electronic conversion and signal processing circuit schematic diagram.
Specific embodiment
A kind of highly reliable mining flame sensor of high speed, including the mu balanced circuit with power electric connection, with voltage-stabilized power supply even
The booster driving circuit connecing, the photoelectric switching circuit being connected with boost conversion circuit, the signal being connected with optical-electrical converter circuit
Process circuit, is connected the ultraviolet phototube being signal output apparatus and being connected with optical-electrical converter circuit with signal processing circuit,
The ultraviolet phototube that the utility model is connected with photoelectric switching circuit is 4.
Booster driving circuit is to 320V, direct current 5V boost in voltage to be driven photoelectric tube, by signal generating circuit, switch
Pipe VT1, sustained diode 1 and step-up transformer T1 composition；Photoelectric switching circuit is that flare up fire is switched to electric signal, photoelectricity
Change-over circuit has four tunnels, and the electric signal of four tunnels conversions is exported to signal processing circuit simultaneously, by charging diode D2, D3,
D4, D5, high-voltage energy storage capacitor C1, C2, C3, C4, ultraviolet phototube GD1, GD2, GD3, GD4 and sampling resistor R1, R2, R3, R4
Composition；The four road electric signals that photoelectric switching circuit produces are carried out shaping filter by signal processing circuit, and analysis judges, sends control
Output signal to output signal circuit, be made up of plastic filter circuit U1, gating circuit U2.
When there being flame, 4 ultraviolet phototubes detect simultaneously, by opto-electronic conversion, and through circuit signal process circuit
Process, through output circuit to controller.
Claims (4)
1. a kind of highly reliable mining flame sensor of high speed, including the mu balanced circuit with power electric connection, is connected with mu balanced circuit
Booster driving circuit, the photoelectric switching circuit being connected with boost conversion circuit, at the signal being connected with optical-electrical converter circuit
Reason circuit, is connected the ultraviolet phototube being signal output apparatus and being connected with optical-electrical converter circuit with signal processing circuit, its
It is characterised by:The ultraviolet phototube that photoelectric switching circuit connects is 4.
2. according to claim 1 the highly reliable mining flame sensor of high speed it is characterised in that：Described booster driving circuit
It is that direct current 5V boost in voltage is driven photoelectric tube to 320V, by signal generating circuit, switching tube VT1, sustained diode 1 and
Step-up transformer T1 forms.
3. according to claim 1 the highly reliable mining flame sensor of high speed it is characterised in that：Described photoelectric switching circuit
It is that flare up fire is switched to electric signal, photoelectric switching circuit has four tunnels, the electric signal of four tunnel conversions is exported to signal simultaneously
Process circuit, by charging diode（D2, D3, D4, D5）, high-voltage energy storage capacitor（C1, C2, C3, C4）, ultraviolet phototube（GD1,
GD2, GD3, GD4）And sampling resistor（R1, R2, R3, R4）Composition.
4. according to claim 1 the highly reliable mining flame sensor of high speed it is characterised in that：Described signal processing circuit
The four road electric signals that photoelectric switching circuit is produced carry out shaping filter, and analysis judges, send control and output signal to output letter
Number circuit, by plastic filter circuit（U1）, gating circuit（U2）Composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038744.3U CN205958120U (en) | 2016-09-06 | 2016-09-06 | High -speed highly reliable mining flame sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038744.3U CN205958120U (en) | 2016-09-06 | 2016-09-06 | High -speed highly reliable mining flame sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205958120U true CN205958120U (en) | 2017-02-15 |
Family
ID=57978525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621038744.3U Active CN205958120U (en) | 2016-09-06 | 2016-09-06 | High -speed highly reliable mining flame sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205958120U (en) |
-
2016
- 2016-09-06 CN CN201621038744.3U patent/CN205958120U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |