CN212807962U - High-precision laser front scattering type smoke dust instrument - Google Patents
High-precision laser front scattering type smoke dust instrument Download PDFInfo
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- CN212807962U CN212807962U CN202022038470.0U CN202022038470U CN212807962U CN 212807962 U CN212807962 U CN 212807962U CN 202022038470 U CN202022038470 U CN 202022038470U CN 212807962 U CN212807962 U CN 212807962U
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Abstract
The utility model relates to a smoke and dust detects technical field, concretely relates to scattering formula smoke and dust appearance before laser that precision is high. Including core module, connection module, detection module, the core module is in including core shell, the setting that has the laser emission hole first lens on the laser emission hole is in with the setting laser emitter, laser receiving device in the core shell, with control system, setting that laser emitter, laser receiving device link to each other are in the beam splitting submodule piece in laser emitter the place ahead, set up and be in beam splitting submodule piece the place ahead and with the coaxial shutter submodule piece in laser emission hole. The utility model discloses a measurement mode of calibration-measurement-calibration-correction can obtain accurate result under the condition of trace particulate matter, has avoided the measuring error that light source power changes and other external environment change arouse, provides accurate data support for the environmental protection.
Description
Technical Field
The utility model relates to a smoke and dust detects technical field, concretely relates to scattering formula smoke and dust appearance before laser that precision is high.
Background
At present, the particulate matter measuring device generally adopts a through type or laser backscattering principle to measure, and has the following defects:
(1) the mode is difficult to accurately detect under the condition that the quantity of smoke particles is extremely small;
(2) the through smoke dust instrument needs to be aligned and debugged during installation, and is complex and has large workload of later maintenance;
(3) the mode needs the measuring personnel to frequently wipe the laser lens, and dust on the laser lens is prevented from influencing the measuring result.
In order to solve the technical problem the utility model discloses a but maintain simple, automatically clear up laser lens's high laser front scattering formula smoke and dust appearance of precision.
Disclosure of Invention
For solving the not enough of prior art existence, the utility model provides a scattering formula smoke and dust appearance before laser that the precision is high.
The technical scheme of the utility model is that:
the utility model provides a scattering formula smoke and dust appearance before laser that precision is high, including core module, connection module, detection module, the core module is in including core shell, the setting that has the laser emission hole first lens on the laser emission hole is in with the setting laser emitter, laser receiving device in the core shell, with control system, the setting that laser emitter, laser receiving device link to each other are in the beam splitting submodule piece in laser emitter the place ahead, set up and be in beam splitting submodule piece the place ahead and with the coaxial shutter submodule piece in laser emission hole.
The connecting module comprises a connecting shell, a connecting pipe, a quartz optical fiber and an air pipe, wherein the bottom of the connecting shell is provided with a large opening, the top of the connecting shell is provided with a connecting hole and a laser measuring hole, the connecting pipe, the quartz optical fiber and the air pipe are arranged on the connecting hole, the bottom of the connecting shell is arranged on the core shell, and an air inlet and an observation port are symmetrically arranged on the side wall of the connecting shell. The detection module comprises a detection shell arranged on the connecting pipe and provided with a laser collecting hole, a second lens arranged on the laser collecting hole, a light absorber arranged in the detection shell and a laser receiving head.
The laser emitting hole, the laser measuring hole and the laser collecting hole are coaxial, and the angle between the axis of the laser receiving head and the axis of the laser collecting hole is smaller than 90 degrees. One end of the quartz optical fiber is connected with the laser receiving device, and the other end of the quartz optical fiber is connected with the laser receiving head. The air pipe is provided with an inlet end, a first outlet end and a second outlet end, the inlet end is connected with the air inlet, the first outlet end is aligned to the first lens, and the second outlet end is arranged on the connecting pipe and aligned to the second lens.
Further, the sub-splitting module comprises a half-reflecting mirror and a reflecting mirror.
Further, the shutter submodule comprises a servo motor and a circular light shading plate with a plurality of light through holes.
Further, the number of the light through holes is 3, the circle centers of the light through holes are arranged on the same circumference, and the angle between every two adjacent light through holes is 120 degrees.
Further, a flange is arranged on the connecting shell.
Furthermore, a dustproof net is arranged on the second outlet end.
Further, still include the switch board, be provided with fan, PLC controller in the switch board.
Furthermore, the control system comprises a single chip microcomputer, a Liquid Crystal Display (LCD) and a plurality of control buttons.
The utility model discloses the beneficial effect who reaches does:
the utility model discloses a beam split submodule piece equally divides into measurement light path, calibration light path with laser, again through shining of two light paths of shutter submodule piece control. When the laser calibration device works, the shutter submodule firstly only irradiates the calibration light path on the laser receiving head through the calibration light path to calibrate the light source; then, a calibration light path is shielded and a measurement light path is allowed to pass through, and a laser receiving head collects scattered light so as to calculate the concentration of smoke dust particles; and finally, only allowing the calibration light path to pass through again, and correcting the measurement result of the smoke dust particle concentration according to the results of the two times of light source calibration. Therefore, by adopting the measurement modes of calibration, measurement, calibration and correction, an accurate result can be obtained under the condition of trace particles, the measurement error caused by the power change of a light source and the change of other external environments is avoided, and accurate data support is provided for protecting the environment.
Furthermore the utility model discloses a fan, tuber pipe can be automatically cleared up the dust on first, the second lens, prevent that the dust from piling up, reduce the utility model discloses a measurement accuracy has also reduced the later maintenance cost simultaneously, as long as the one-time mounting alright use for a long time.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention, and the dotted line represents light.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a right side view of the present invention.
Fig. 4 is a front view of the light shielding plate.
Fig. 5 is a usage state diagram of the present invention.
In the figure, 100, the core shell; 101. a first lens; 110. a laser transmitter; 120. a laser receiving device; 130. a half mirror; 131. a mirror; 140. a servo motor; 141. a visor; 142. a light through hole; 150. a single chip microcomputer; 151. a liquid crystal LCD; 152. a control button; 200. connecting the shell; 201. an air inlet; 202. a viewing port; 203. measuring holes by laser; 210. a flange; 220. a connecting pipe; 230. a silica optical fiber; 240. an air duct; 241. a first outlet end; 242. a second outlet end; 300. detecting the shell; 301. a second lens; 310. a light absorber; 320. a laser receiving head; 400. a control cabinet.
Detailed Description
To facilitate understanding of the present invention for those skilled in the art, embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1-5, the utility model provides a scattering formula smoke and dust appearance before laser that precision is high, including core module, connection module, detection module, the core module is in including core shell 100, the setting that has the laser emission hole first lens 101 on the laser emission hole is in with the setting laser emitter 110 in the core shell 100, laser receiving device 120, with the control system that laser emitter 110, laser receiving device 120 link to each other, set up and be in the light splitting submodule piece in laser emitter 110 the place ahead, set up and be in light splitting submodule piece the place ahead and with the coaxial shutter submodule piece in laser emission hole. The laser transmitter 110 uses a 650nm red laser light source, and the laser receiver 120 is an infrared light sensor for detecting the intensity of light.
The sub-module comprises a half mirror 130 and a reflector 131, the half mirror 130 is a dielectric film cubic half mirror, the center of the half mirror 130 is located on the axis of the laser emitter 110, the included angle between the half mirror 130 and the axis of the laser emitter 110 is 45 degrees, and the reflector 131 is parallel to the half mirror 130. Laser emitted by the laser emitter 110 irradiates on the half mirror 130, and half of light rays penetrate through the half mirror 130 to form a measuring light path; the other half of the light is reflected to the mirror 131, and is reflected by the mirror 131 to form a calibration light path, which is parallel to the measurement light path.
The shutter submodule comprises a servo motor 140 and a circular light shielding plate 141 with a plurality of light through holes 142, the servo motor 140 is connected with the control system, and the light shielding plate 141 is arranged on an output shaft of the servo motor 140. Preferably, the number of the light passing holes 142 is 3, the centers of the light passing holes 142 are arranged on the same circumference, and the angle between two adjacent light passing holes 142 is 120 degrees. The light shielding plate 141 is driven by the servo motor 140 to rotate continuously, so that only one of the measuring light path and the calibrating light path can pass through the light through hole 142 at the same time.
Connection module includes that the bottom has big opening and the top has connecting shell 200, the setting of connecting hole, laser measuring hole 203 and is in connecting pipe 220, quartz fiber 230, tuber pipe 240 on the connecting hole, be provided with flange 210 on the connection shell 200, flange 210 is used for with the utility model discloses fix at certain measuring point, like the chimney of mill. The bottom of the connection housing 200 is disposed on the core housing 100, an air inlet 201 and an observation port 202 are symmetrically disposed on a side wall of the connection housing 200, and the observation port is used for observing whether the first lens 101 is cleaned up. The detection module is including setting up on the connecting pipe 220 and have the detection shell 300 of laser collection hole, set up and be in second lens 301 on the laser collection hole and setting are in detect extinction ware 310, the laser receiving head 320 in the shell 300, detect the shell 300 with form detection area between the connecting shell 200, the material of extinction ware 310 is the aluminum alloy.
The laser emitting hole, the laser measuring hole 203 and the laser collecting hole are coaxial, and the angle between the axis of the laser receiving head 320 and the axis of the laser collecting hole is smaller than 90 degrees. One end of the quartz optical fiber 230 is connected to the laser receiver 120, and the other end is connected to the laser receiver head 320. The air pipe 240 is provided with an inlet end, a first outlet end 242 and a second outlet end 242, the inlet end is connected with the air inlet 201, the first outlet end 241 is aligned to the first lens 101, the second outlet end 242 is arranged on the connecting pipe 220 and is aligned to the second lens 301, and the second outlet end 242 is provided with a dust screen to prevent smoke particles from entering the air pipe 240.
Further, the control system comprises a single chip microcomputer 150, a Liquid Crystal Display (LCD) 151 and a plurality of control buttons 152. The singlechip 150 with liquid crystal LCD151, control button 152, laser emitter 110, laser receiving arrangement 120, servo motor 140 link to each other, and the user can set up through control button 152 the utility model discloses a detect precision, automatic clearance time interval etc.. The type of the single chip microcomputer 150 is as follows: AT89S 52; the liquid crystal LCD151 has the following types: JLX192 19264G-933-P.
The part is the measuring device body above, in addition the utility model discloses still include switch board 400, be provided with fan, PLC controller in the switch board 400, the PLC controller can link to each other with a plurality of measuring device body, and the information that the measuring device body was collected is gathered the PLC controller, the PLC controller is uploaded the information that detects to the server again. The PLC controller with the fan links to each other, the air outlet of fan is provided with the electromagnetism valves, the electromagnetism valves pass through the hose with go into wind gap 201 and link to each other, the electromagnetism valves with the PLC controller links to each other. The PLC controller is characterized in that the types of the PLC controller are as follows: siemens PLC 1200. When the first lens 301 and the second lens 301 need to be cleaned, the single chip microcomputer 150 sends cleaning signals to the PLC, the PLC starts the fan after receiving the signals, and the electromagnetic valve group is controlled to be connected with the corresponding hose. Thus, the wind generated by the fan enters the wind pipe 240 through the hose and is finally ejected out of the first and second outlet ends 242 to blow off the dust on the first and second lenses 301, thereby achieving the purpose of cleaning.
Specifically, the utility model discloses a control method does:
(1) the utility model is arranged at a certain measuring point and is fixed by a flange 210;
(2) the user sets the initial parameters of the utility model through the control system and starts the system;
(3) initially, a measuring light path is shielded by a light shielding plate 141, a calibration light path irradiates on the laser receiving head 320 through the light through hole 142, the first lens 101, the laser measuring hole 203 and the second lens 301, the calibration light path is collected by the laser receiving head 320 and is transmitted to the laser receiving device 120 through the quartz optical fiber 230, the laser receiving device 120 converts an optical signal into an electrical signal and transmits the electrical signal to the single chip microcomputer 150, and therefore the single chip microcomputer 150 can know the intensity of the calibration light path when the calibration light path irradiates on the laser receiving device 120;
(4) the servo motor 140 is started, the light shielding plate 141 rotates, the calibration light path is shielded, the measurement light path irradiates the light absorber 310 through the light through hole 142, the first lens 101, the laser measurement hole 203 and the second lens 301, when the measurement light path approaches a detection area, scattering occurs under the action of particles in the air, and part of scattered light is received by the laser receiving head 320 and is transmitted to the laser receiving device 120; the more the number of the particles in the air is, the more the scattering is when the measuring light path is used for detecting the area, and the more the scattered light received by the laser receiving head 320 is, so that the concentration of the particles in the air can be deduced by the singlechip 150;
(5) repeating the step (3) to obtain the intensity of the calibration light path when the calibration light path is irradiated on the laser receiving device 120 again, and correcting the measurement data by using the calibration result so as to eliminate the influence of the intensity change of the light source or other environmental changes on the measurement result;
(6) when the utility model discloses work after a period, control system can send clearance signal, starts the fan and blows off the dust on first, the second lens 301, prevents to influence and detects the precision.
The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a scattering formula smoke and dust appearance before laser that precision is high which characterized in that: the device comprises a core module, a connecting module and a detection module, wherein the core module comprises a core shell with a laser emission hole, a first lens arranged on the laser emission hole, a laser emitter, a laser receiving device, a control system connected with the laser emitter and the laser receiving device, a light splitting sub-module arranged in front of the laser emitter, and a shutter sub-module arranged in front of the light splitting sub-module and coaxial with the laser emission hole;
the connecting module comprises a connecting shell, a connecting pipe, a quartz optical fiber and an air pipe, wherein the bottom of the connecting shell is provided with a large opening, the top of the connecting shell is provided with a connecting hole and a laser measuring hole, the connecting pipe is arranged on the connecting hole, the bottom of the connecting shell is arranged on the core shell, and the side wall of the connecting shell is symmetrically provided with an air inlet and an observation port; the detection module comprises a detection shell which is arranged on the connecting pipe and is provided with a laser collecting hole, a second lens arranged on the laser collecting hole, a light absorber and a laser receiving head which are arranged in the detection shell;
the laser emitting hole, the laser measuring hole and the laser collecting hole are coaxial, and the angle between the axis of the laser receiving head and the axis of the laser collecting hole is smaller than 90 degrees; one end of the quartz optical fiber is connected with the laser receiving device, and the other end of the quartz optical fiber is connected with the laser receiving head; the air pipe is provided with an inlet end, a first outlet end and a second outlet end, the inlet end is connected with the air inlet, the first outlet end is aligned to the first lens, and the second outlet end is arranged on the connecting pipe and aligned to the second lens.
2. The high-precision laser front scattering type soot instrument according to claim 1, wherein: the light splitting sub-module comprises a half-reflecting mirror and a reflecting mirror.
3. The high-precision laser front scattering type soot instrument according to claim 1, wherein: the shutter submodule comprises a servo motor and a circular light screen with a plurality of light through holes.
4. The high-precision laser front scattering type soot instrument according to claim 3, wherein: the number of the light through holes is 3, the circle centers of the light through holes are arranged on the same circumference, and the angle between every two adjacent light through holes is 120 degrees.
5. The high-precision laser front scattering type soot instrument according to claim 1, wherein: and a flange is arranged on the connecting shell.
6. The high-precision laser front scattering type soot instrument according to claim 1, wherein: and a dust screen is arranged on the second outlet end.
7. The high-precision laser front scattering type soot instrument according to claim 1, wherein: the air conditioner further comprises a control cabinet, wherein a fan and a PLC (programmable logic controller) are arranged in the control cabinet.
8. The high-precision laser front scattering type soot instrument according to claim 1, wherein: the control system comprises a single chip microcomputer, a Liquid Crystal Display (LCD) and a plurality of control buttons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022038470.0U CN212807962U (en) | 2020-09-17 | 2020-09-17 | High-precision laser front scattering type smoke dust instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022038470.0U CN212807962U (en) | 2020-09-17 | 2020-09-17 | High-precision laser front scattering type smoke dust instrument |
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| Publication Number | Publication Date |
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| CN212807962U true CN212807962U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022038470.0U Active CN212807962U (en) | 2020-09-17 | 2020-09-17 | High-precision laser front scattering type smoke dust instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114098204A (en) * | 2021-10-28 | 2022-03-01 | 安徽澄小光智能科技有限公司 | Intelligence wearing equipment based on biosensor |
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2020
- 2020-09-17 CN CN202022038470.0U patent/CN212807962U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114098204A (en) * | 2021-10-28 | 2022-03-01 | 安徽澄小光智能科技有限公司 | Intelligence wearing equipment based on biosensor |
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