CN101498664A - Dust concentration sensing device - Google Patents
Dust concentration sensing device Download PDFInfo
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- CN101498664A CN101498664A CNA2009103007980A CN200910300798A CN101498664A CN 101498664 A CN101498664 A CN 101498664A CN A2009103007980 A CNA2009103007980 A CN A2009103007980A CN 200910300798 A CN200910300798 A CN 200910300798A CN 101498664 A CN101498664 A CN 101498664A
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- dust
- dust concentration
- dirt
- sensing device
- concentration sensing
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Abstract
The invention discloses a dust concentration sensing device comprising a display box and a probe arranged at the bottom of the display box. The probe comprises a tubular dust cylinder and a dust cylinder sleeve; the dust cylinder is provided with at least one pair of light transmission holes; and a laser transmitter and a photoelectric converter are respectively arranged in positions which correspond to the position of the through hole. When in use, the dust concentration sensing device is hung in natural wind current, the air with dust enters the dust cylinder to be formed into a dust column irradiated by laser in the dust cylinder, the photoelectric converter receives the scattered light on the dust column, converts the scattered light and sends the scattered light to a single chip microcomputer, and the single chip microcomputer processes the scattered light and finally displays the dust concentration. The probe also comprises a driving motor for driving the dust cylinder to rotate round a central axis with respect to the dust cylinder sleeve; and the dust cylinder is provided with a dust brush for brushing the light emitting part of the laser transmitter and the light absorbing part of the photoelectric converter. Due to the arrangement of the dust brush, the dust concentration measurement is not affected by absorbed dust, and the reliability and the precision of the dust concentration measurement are ensured.
Description
Technical field
The present invention relates to a kind of dust concentration sensing device, relate in particular to a kind of in natural airflow the instrument of continuous monitoring dust concentration.
Background technology
For the measurement of dust concentration, mainly adopt dust sampler and direct-reading dust gauge at present.The former utilizes the heavy method principle of filter membrane meter: the dust laden air that extracts certain volume, dust is trapped on the filter membrane, according to the dust quality that increases on the filter membrane, utilize formula to calculate the airborne dust mass concentration of unit volume again, have troublesome poeration, the dust concentration value will be by calculating the shortcoming just can come out; Principles such as The latter indirect method such as light scattering utilize sampling thief to demarcate, but the dust concentration value is measured in instant playback, but the working time is short, and it is limited to measure number of times, can not can only use as the portable dust gauge of routine the dust continuous monitoring.
Chinese patent 200820028964.7 discloses a kind of sensor of dust concentration, housing is provided with air intake opening, air intake opening is communicated with the darkroom of enclosure interior, in the passage of air intake opening, be provided with laser generator, the side in darkroom has been avoided a window, be provided with photoelectric commutator in this window, the gas outlet in darkroom is connected with exhausr port by pipeline, be provided with air exhauster in the described pipeline, photoelectric commutator is connected with master control borad, master control borad respectively with interface socket, keyboard is set, digital display screen is connected by lead.
Chinese patent 200620125097.X discloses and a kind of dust concentration has been carried out long-time continuous monitoring and instant playback dust concentration value, changes into the sensor of frequency signal output simultaneously.Structure is made up of shell, dust sampling head, dust room, blower fan, photoelectricity receiving device; Dust room is cased, and the dust sampling head is arranged on dust room's one side, and blower fan is installed in dust room's opposite side, and the photoelectricity receiving device is arranged on dust room top.
Above-mentioned the deficiencies in the prior art part is: the illuminating part of generating laser and the light absorption department of photoelectric commutator easily adsorb dust, thereby influence measuring reliability.
Summary of the invention
The technical problem to be solved in the present invention provides reliability that a kind of dust concentration detects and precision dust concentration sensing device preferably.
For solving the problems of the technologies described above, the invention provides a kind of dust concentration sensing device, comprise and show casing and be located at the probe that shows bottom half, be characterized in: described probe comprises: the dirt tube of tubulose and the dirt jacket casing that is sheathed on the dirt tube, the dirt tube is provided with at least one pair of light hole, with this light hole opposite position is respectively equipped with generating laser and photoelectric commutator on the dirt jacket casing.Described probe also comprises and is used to drive the drive motor of the relative dirt jacket casing of dirt tube around the central shaft autobiography, and the dirt tube is provided with the dirt brush of the light absorption department of the illuminating part that is used for the described generating laser of wiping and photoelectric commutator.Owing to adopted the dirt brush,, guaranteed reliability and precision that dust concentration detects so make measurement do not adsorbed effect of dust.
Further, have dust laden air for stoping in the dirt tube, described probe also comprises: the gap location between driving dirt tube and dirt jacket casing send the snorkel of pure air.
Further, described snorkel links to each other with air filtration and air-supply arrangement so that clean air import dirt jacket casing and dirt tube between, blow out from light hole, stop that dust laden air pours in the dirt tube.
Further, for receiving dust-laden scattered light face to greatest extent and avoid veiling glare to disturb, each light hole medium and small is on the circle perpendicular to the central shaft of dirt tube, and the angle on this circle between each light hole is 120 °.
The present invention has positive effect: probe segment, gear train, brush lens device (being the dirt brush), Laser emission and receiving circuit, drive motor and the display window of dirt tube are housed in the demonstration casing of (1) dust concentration sensing device of the present invention (being shell), in showing casing air filtration and air-supply arrangement are housed also.This dust concentration sensing device in natural airflow, can continuous monitoring dust concentration and can uninterruptedly show dust concentration in real time, and the signal of exportable standard system is connected transmission with various supervisory systems, with the real-time sprinkle water and spray dust falling device of controlling the outside.Hang in natural airflow when (2) dust concentration sensing device of the present invention uses, when dust laden air moves with certain wind speed, flow-guiding mouth by the outer two ends of dirt tube enters the dirt tube, uniform dust-contained airflow, in the middle of the dirt tube, form a branch of by the dirt post of laser radiation, photoelectric commutator receives the scattered light intensity on the dirt post, and light signal send single-chip microcomputer to handle after light-to-current inversion and analog to digital conversion, and shows dust concentration at last.There is the angle of 120 degree between the emission of laser and photoelectricity receive in the dirt tube, handles through lusterless paint in the tube, received dust-laden scattered light face to greatest extent and avoided veiling glare to disturb.The dirt brush is driven by dc brushless motor, and the motor no-spark has the overload flow protection, and the positive and negative motion of dirt tube is by the intelligent control of program.Air filtration and air-supply arrangement comprise dustproof gentle breeze generator and air strainer; Dustproof gentle breeze generator sucks the space with the anti-pouring cover of dust laden air on showing casing, and the path air strainer is removed grit, between clean air importing dirt jacket casing and the dirt tube, blows out from light hole, and dust laden air pours in the prevention dirt tube.(3) among the present invention, the totally enclosed encapsulation structure of the whole employing of probe can show real-time dust concentration numerical value, and can export one group of switching value signal according to the dust concentration of setting, in order to drive the depositing dust peripherals of sprinkle water and spray.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of dust concentration sensing device of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the structural representation of the probe in the above-mentioned dust concentration sensing device.
Fig. 4 is the circuit block diagram of dust concentration sensing device of the present invention.
Label is as follows in the accompanying drawing: 1-demonstration casing, 2-probe, 3-display window, 4-power supply and signal terminal mouth, 5-air filtration and air-supply arrangement, 6-photoelectric commutator, 7-generating laser, 8-suspension ring, 9-snorkel, 10-drive motor, 11-flow-guiding mouth, 12-dirt tube, 13-six sides cover, 14 and 15-light hole, 16-dirt brush, 17-dirt jacket casing, 18-central control unit, 19-laser power supply circuit, 20-motor positive inversion control circuit, 21-signal processing circuit, 22-display circuit, 23-output control circuit, 24-frequency output circuit.
Embodiment
Embodiment 1
See Fig. 1-3, the dust concentration sensing device of present embodiment comprises: show casing 1 and be located at the probe 2 that shows casing 1 bottom.
Described probe 2 comprises: the dirt tube 12 of tubulose, be sheathed on dirt jacket casing 17 on the dirt tube 12, be used to drive dirt tube 12 relative dirt jacket casings 17 around the drive motor 10 of central shaft autobiography, brush 16 to the dirt that drives snorkel 9 that dirt tube 12 and the gap location between the dirt jacket casing 17 send pure air, is located at the light absorption department of illuminating part that is used for the described generating laser of wiping on the dirt tube 12 and photoelectric commutator.Dirt tube 12 is provided with at least one pair of light hole 14 and 15, with this light hole 14 and 15 opposite positions is respectively equipped with generating laser and photoelectric commutator on dirt jacket casing 17.
Described snorkel 9 links to each other with air filtration and air-supply arrangement 5, and described dirt tube 12 two ends are provided with flow-guiding mouth 11.On described each light hole 14 and 15 the medium and small circle that is in perpendicular to the central shaft of dirt tube 12, at the angle between each light hole 14 and 15 on this circle is 120 °, also be that angle between described generating laser and the photoelectric commutator is 120 °, the inwall of dirt tube 12 scribbles lusterless paint.Described demonstration casing 1 is provided with display window 3 and power supply and the signal terminal mouth 4 that is used to show dust concentration.
See Fig. 4, show in the casing 1 to be provided with electronic circuit board, it comprises: the central control unit 18 that is made of the single-chip microcomputer treatment circuit, the laser power supply circuit 19 that links to each other with generating laser 7, the display circuit 22 that links to each other with central control unit 18, the motor positive inversion control circuit 20 that is used to control described drive motor 10 that links to each other with central control unit 18, what link to each other with the dust concentration signal input part of central control unit 18 is used to handle signal processing circuit 21 from the output signal of photoelectric commutator 21, the frequency output circuit 24 that is used for reacting dust concentration information that links to each other with central control unit 18 by frequency signal, being used to of linking to each other with central control unit 18 drives the output control circuit 23 of the depositing dust peripherals of sprinkle water and spray; The laser controlling output terminal of central control unit 18 links to each other with the control input end of laser power supply circuit 19.The output termination power of frequency output circuit 24 and signal terminal mouth 4.
Power circuit comprises laser power supply circuit, and it is made up of frequency dividing circuit, delay circuit and constant-current circuit.Signal processing circuit is amplified by detection, follows, and zeroing and Analog to Digital Converter section are grouped into.
Should be appreciated that specific embodiment described above only is used to explain the present invention, and be not used in qualification the present invention.Conspicuous variation of being extended out by spirit of the present invention or change still are among protection scope of the present invention.
Claims (8)
- [claim 1]1, a kind of dust concentration sensing device, comprise: show casing (1) and be located at the probe (2) that shows casing (1) bottom, it is characterized in that: described probe (2) comprising: the dirt tube (12) of tubulose and be sheathed on dirt jacket casing (17) on the dirt tube (12), dirt tube (12) is provided with at least one pair of light hole (14 and 15), goes up and this is respectively equipped with generating laser (6) and photoelectric commutator (7) to light hole (14 and 15) opposite position at dirt jacket casing (17); Described probe (2) comprises also and is used to drive dirt tube (12) dirt jacket casing (17) is around the drive motor (10) of central shaft autobiography relatively that dirt tube (12) is provided with the dirt brush (16) of the light absorption department of the illuminating part that is used for the described generating laser of wiping (6) and photoelectric commutator (7).
- [claim 2]2, dust concentration sensing device according to claim 1 is characterized in that: described probe (2) also comprises: the gap location between driving dirt tube (12) and dirt jacket casing (17) send the snorkel (9) of pure air.
- [claim 3]3, dust concentration sensing device according to claim 2 is characterized in that: described dirt tube (12) two ends are provided with flow-guiding mouth (11).
- [claim 4]4, dust concentration sensing device according to claim 3 is characterized in that: described snorkel (9) links to each other with air filtration and air-supply arrangement (5).
- [claim 5]5, according to the described dust concentration sensing device of one of claim 1-4, it is characterized in that: described demonstration casing (1) is provided with display window (3) and power supply and the signal terminal mouth (4) that is used to show dust concentration.
- [claim 6]6, according to the described dust concentration sensing device of one of claim 1 to 4, it is characterized in that: described each light hole (14 and 15) medium and small is on the circle perpendicular to the central shaft of dirt tube (12), and the angle between each light hole on this circle (14 and 15) is 120 °.
- [claim 7]7, dust concentration sensing device according to claim 6 is characterized in that: the inwall of described dirt tube (12) scribbles lusterless paint.
- [claim 8]8, dust concentration sensing device according to claim 7, it is characterized in that: be provided with electronic circuit board in the described demonstration casing (1), it comprises: central control unit (18), the laser power supply circuit (19) that links to each other with generating laser (7), the display circuit (22) that links to each other with central control unit (18), the motor positive inversion control circuit that is used to control described drive motor (10) (20) that links to each other with central control unit (18), what link to each other with the dust concentration signal input part of central control unit (18) is used for handling signal processing circuit (21) from the output signal of photoelectric commutator (21), the frequency output circuit (24) that is used for reacting dust concentration information that links to each other with central control unit (18) by frequency signal, being used to of linking to each other with central control unit (18) drives the output control circuit (23) of the depositing dust peripherals of sprinkle water and spray; The laser controlling output terminal of central control unit (18) links to each other with the control input end of laser power supply circuit (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103007980A CN101498664B (en) | 2009-03-11 | 2009-03-11 | Dust concentration sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103007980A CN101498664B (en) | 2009-03-11 | 2009-03-11 | Dust concentration sensing device |
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| Publication Number | Publication Date |
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| CN101498664A true CN101498664A (en) | 2009-08-05 |
| CN101498664B CN101498664B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103007980A Active CN101498664B (en) | 2009-03-11 | 2009-03-11 | Dust concentration sensing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128772A (en) * | 2009-12-14 | 2011-07-20 | 罗伯特.博世有限公司 | Device for determining particle size and/or particle concentration of gas flow with particles, and method thereof |
| CN103323425A (en) * | 2013-05-28 | 2013-09-25 | 成都佳锂科技有限公司 | Fine particle sensor |
| CN103837451A (en) * | 2014-02-28 | 2014-06-04 | 苏州亿利安机电科技有限公司 | Dust sensor for on-line monitoring of dust concentration |
| CN105572003A (en) * | 2014-11-10 | 2016-05-11 | 江苏美的清洁电器股份有限公司 | Control method of dust concentration detection component for dust collector |
| CN106053310A (en) * | 2016-08-11 | 2016-10-26 | 北京大方科技有限责任公司 | Dust detection apparatus with foldable calibration mechanism |
| CN106959262A (en) * | 2017-03-31 | 2017-07-18 | 中煤科工集团重庆研究院有限公司 | Optics-based unpowered dust detection system, device and detection method |
| CN107272527A (en) * | 2016-04-07 | 2017-10-20 | 上海凡贝机械有限公司 | Dust control system |
-
2009
- 2009-03-11 CN CN2009103007980A patent/CN101498664B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128772A (en) * | 2009-12-14 | 2011-07-20 | 罗伯特.博世有限公司 | Device for determining particle size and/or particle concentration of gas flow with particles, and method thereof |
| CN102128772B (en) * | 2009-12-14 | 2015-09-30 | 罗伯特.博世有限公司 | The particle size of the flowing gas with particle and/or concentration determining device and method |
| CN103323425A (en) * | 2013-05-28 | 2013-09-25 | 成都佳锂科技有限公司 | Fine particle sensor |
| CN103837451A (en) * | 2014-02-28 | 2014-06-04 | 苏州亿利安机电科技有限公司 | Dust sensor for on-line monitoring of dust concentration |
| CN105572003A (en) * | 2014-11-10 | 2016-05-11 | 江苏美的清洁电器股份有限公司 | Control method of dust concentration detection component for dust collector |
| CN105572003B (en) * | 2014-11-10 | 2018-10-19 | 江苏美的清洁电器股份有限公司 | The control method of dust concentration detection components for dust catcher |
| CN107272527A (en) * | 2016-04-07 | 2017-10-20 | 上海凡贝机械有限公司 | Dust control system |
| CN106053310A (en) * | 2016-08-11 | 2016-10-26 | 北京大方科技有限责任公司 | Dust detection apparatus with foldable calibration mechanism |
| CN106053310B (en) * | 2016-08-11 | 2019-03-15 | 北京大方科技有限责任公司 | A kind of dust investigating with foldable correcting mechanism |
| CN106959262A (en) * | 2017-03-31 | 2017-07-18 | 中煤科工集团重庆研究院有限公司 | Optics-based unpowered dust detection system, device and detection method |
| CN106959262B (en) * | 2017-03-31 | 2023-09-26 | 中煤科工集团重庆研究院有限公司 | Unpowered dust detection system, device and detection method based on optics |
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| Publication number | Publication date |
|---|---|
| CN101498664B (en) | 2011-04-20 |
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Owner name: JIANGSU 3SHINE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANGSU SHINE TECHNOLOGY GROUP CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 213022 Jiangsu province Changzhou Xinbei Longhu Street Technology Road No. 1 Patentee after: Jiangsu Shine Technology Co., Ltd. Address before: 213031 Jiangsu city of Changzhou province Xinbei Longhu street, Avenue of science and technology Patentee before: Jiangsu Shine Technology Group Co., Ltd. |