CN108801923A - A kind of optics original position water quality detection system - Google Patents
A kind of optics original position water quality detection system Download PDFInfo
- Publication number
- CN108801923A CN108801923A CN201810954239.0A CN201810954239A CN108801923A CN 108801923 A CN108801923 A CN 108801923A CN 201810954239 A CN201810954239 A CN 201810954239A CN 108801923 A CN108801923 A CN 108801923A
- Authority
- CN
- China
- Prior art keywords
- shell
- optical signal
- water quality
- motor
- quality detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/152—Scraping; Brushing; Moving band
Abstract
The present invention is for when being in the prior art detected water quality,Single-point water sample can only be detected,Optical window surface is easy the aquatiles such as attached microbial and shellfish,The deficiency of testing result inaccuracy,A kind of optics original position water quality detection system is provided,The system includes optical signal transmitter and optical signal receiver,Optical signal transmitter includes shell one and optical signal launcher,Optical signal receiver includes shell two and light signal receiving,It is provided with holding tank on shell two,It further include cleaning device,Cleaning device includes motor,It is provided with accommodating chamber in shell one or shell two,Motor is set in accommodating chamber,The output end of motor is connected by connector with the brush handle of hairbrush,The both sides of brush head are in contact with optical window one and optical window two respectively,By using water quality detection system provided by the invention,Avoid influencing the accuracy of water quality detection due to attached microbial or shellfish on optical window one and optical window two.
Description
Technical field
The present invention relates to a kind of optics original position water quality detection systems.
Background technology
It when being detected to water quality, is generally detected by water quality sensor, water quality in the prior art sensing
Device generally comprises optical signal launcher and light signal receiving, and optical signal launcher is arranged in one end of cylinder one, light
Signal receiving device is set to one end of cylinder two, cylinder one and cylinder two and is received relative to optical signal launcher or optical signal
Optical window is arranged in the position of device, by optical signal launcher and light signal receiving to penetrating, optical signal launch dress
Setting the signal sent out passes through optical window to pass through in the water to light signal receiving that needs detect, and light signal receiving is connect
In the signal transmission to analytical equipment received, the case where water sample water quality of detection is analyzed by analytical equipment, using above-mentioned knot
The water quality detecting device of structure, can only be detected to single-point water sample can not judge that extraneous water quality mutation and sensor itself signal float
The case where results such as shifting mutation, the result of detection can not be proofreaded and be verified, and there are contingency to cause the result of detection inaccurate, separately
Outer above-mentioned feature optical window surface is easy the aquatiles such as attached microbial and shellfish, the aquatic organisms such as these microorganisms and shellfish
Attachment can influence testing result of the sensor to water quality, cause testing result inaccurate.
Invention content
The object of the present invention is to for when being detected in the prior art to water quality, single-point water sample can only be detected,
The case where can not judging the mutation of the results such as extraneous water quality mutation and sensor signal drift itself, make the result of detection that can not proofread
And verification, there are contingency and optical window surface to be easy the aquatiles such as attached microbial and shellfish, can influence sensor pair
The testing result of water quality causes the deficiency of testing result inaccuracy, provides a kind of optics original position water quality detection system.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of optics original position water quality detection system, including optical signal transmitter and optical signal receiver, optical signal transmitter include
Shell one and optical signal launcher, path channels one are provided on shell one, and optical signal launcher is arranged in path channels
In one and towards its optical window one, optical signal receiver includes shell two and light signal receiving, is provided on shell two
Holding tank, light signal receiving are set in holding tank, are oppositely arranged with optical signal launcher by its optical window two,
Further include cleaning device, cleaning device includes motor, hairbrush and connector, and receiving is provided in shell one or shell two
Chamber, motor are set in accommodating chamber, and the output end of motor is connected by connector with the brush handle of hairbrush, the brush head of hairbrush
Outside shell one or shell two, the both sides of brush head are in contact with optical window one and optical window two respectively；
Further, the outside of motor is provided with electric motor protecting shell, and the outside of connector is provided with waterproof jacket, before connector
End is fixedly connected through one end of waterproof jacket with brush handle, and the other end of waterproof jacket is fixedly connected with motor protection shell；
Further, connector is axle sleeve, and the both ends of axle sleeve are fixedly connected with the brush handle of the output end of motor and hairbrush respectively,
Bearing is provided between axle sleeve and waterproof, bearing is set on axle sleeve, and the front end of axle sleeve and the junction of waterproof jacket are provided with close
Big envelope；
Further, it is additionally provided with optocoupler in waterproof jacket, the inductor coordinated with optocoupler, receiver and optocoupler are provided on axle sleeve
It is oppositely arranged；
Further, motor is set in shell one, and the both sides of shell two are respectively arranged with a holding tank, and holding tank is interior respectively
It is provided with a light signal receiving, optical signal transmitter and cleaning device, shell two are respectively arranged with outside the both sides of shell two
Both sides in light signal receiving it is corresponding with the optical signal launcher of respective side respectively；
Further, it is respectively arranged with the opening being connected with path channels one and holding tank on shell one and shell two, be open
On be provided with end cap；
Further, the junction of waterproof jacket and electric motor protecting shell is provided with sealing element one, the junction of waterproof jacket and shell one
It is provided with sealing element two；
Further, it is provided with the line outlet being routed through for motor on electric motor protecting shell, line outlet is provided in line outlet
Sealing；
Further, the junction of end cap and one/shell of shell two is provided with sealing element three, and end cap is fixed by screws in shell
One and shell two on.
Using optics original position provided by the invention water quality detection system, when in use, can be combined with signal analysis device
It uses, two optical signal launchers are simultaneously emitted by signal, and signal corresponding thereto reception device receives optical signal launch dress
Set the signal sent out, signal receiving device can be by the signal transmission to analytical equipment received, can be by two by analytical equipment
A data are compared and are corrected, avoid due to aquatic environment mutation and caused by testing result be mutated, improve testing result
Accuracy and reliability, and when a pair of of signal receiving device and signal projector when something goes wrong, another pair signal receives
Device and signal projector can also continue to work, avoid water sample parameter acquisition process and interrupt, at the same when to water quality into
There is microorganism when row detection or when shellfish is attached to the situation on optical window one or optical window two, control motor turns
Dynamic, motor drives brush handle that brush head is made to rotate by connector, due to brush head both sides respectively with optical window one and optical window
Mouth two fits, and by the rotation of brush head to clean up microorganism or shellfish from optical window one and optical window two, keeps away
Exempt to influence the accuracy of water quality detection due to attached microbial or shellfish on optical window one and optical window two.
Description of the drawings
Fig. 1 is the section view figure structure schematic representation of optics original position of the present invention water quality detection system；
Fig. 2 is the section view figure structure schematic representation of cleaning device in the water quality detection system of optics original position of the present invention.
Reference sign
1- optical signal transmitters；11- optical signal launchers；2- optical signal receivers；21- light signal receivings；3- shells
One；31- path channels one；32- optical windows one；4- shells two；41- path channels two；42- optical windows two；5- is open；
51- end caps；52- sealing elements three；53- screws；6- cleaning devices；61- accommodating chambers；62- motor；63- electric motor protecting shells；631-
Outlet port sealing；64- connectors；65- waterproof jackets；651- sealing elements one；652- sealing elements two；66- bearings；67- sealing shrouds；
68- hairbrush；681- brush handles；682- brush heads；69- optocouplers；691- inductors.
Specific implementation mode
The present invention is further described with reference to specific embodiment：
As depicted in figs. 1 and 2, a kind of optics original position water quality sensor, including optical signal transmitter 1, optical signal receiver 2 and
Cleaning device 6, optical signal transmitter include shell 1 and optical signal launcher 11, and it is logical that light path is provided on the shell one
Road 1, in path channels 1 and towards its optical window 1, optical signal receives for the optical signal launcher setting
Device 2 includes shell 24 and light signal receiving 21, is provided with holding tank 41 on shell 24, light signal receiving is set to
It in holding tank, is oppositely arranged with optical signal launcher by its optical window 2 42, cleaning device 6 includes motor 62, hair
68 and connector 64 are brushed, is provided with accommodating chamber 61 in shell 1 or shell 24, motor is set in accommodating chamber 61, electronic
The output end of machine is connected by connector 64 with the brush handle 681 of hairbrush 68, the both sides of the brush head 682 of hairbrush 68 respectively with optics
Window 1 and optical window 2 42 fit, and occur microorganism when being detected to water quality or shellfish is attached to optical window
1 or optical window 2 42 on situation when, control motor 62 rotation or timing controlled motor 62 rotate, motor
62 drive brush handle 681 that brush head 682 is made to rotate by connector 64, since optical window 1 and light are distinguished in the both sides of brush head 682
Window 2 42 is learned to fit, by the rotation of brush head 682 to by microorganism or shellfish from optical window 1 and optical window
2 42 clean up, and avoid influencing water quality detection due to attached microbial or shellfish on optical window 1 and optical window 2 42
Accuracy.
As shown in Figure 1, the outside of motor 62 is provided with electric motor protecting shell 63, the outside of connector 64 is provided with waterproof jacket
65, the front end of connector 64 is fixedly connected through one end of waterproof jacket 65 with brush handle 681, and the other end and the motor of waterproof jacket 65 are protected
Protective case 63 is fixedly connected, and setting in this way protects motor 62 by electric motor protecting shell 63, avoids examining by waterproof jacket 65
The water of survey enters in electric motor protecting shell 63 and influences motor 62, it is preferred that connector 64 is axle sleeve, and the both ends of axle sleeve are distinguished
It is fixedly connected with the brush handle 681 of the output end of motor 62 and hairbrush 68, bearing 66, axis is provided between axle sleeve and waterproof jacket 35
It holds 66 to be set in outside axle sleeve, the front end of axle sleeve is provided with sealing shroud 67 with the junction of waterproof jacket 65, passes through the effect of bearing 66
Prevent axle sleeve from directly being contacted with waterproof jacket 65, avoiding waterproof jacket 65 influences the rotation of axle sleeve, and sealing shroud 67 improves waterproof jacket
65 with the leakproofness of the junction of axle sleeve, anti-infiltrations of harnessing the river, the junction setting of preferred waterproof jacket 65 and electric motor protecting shell 63
There are sealing element 1, waterproof jacket 65 and the junction of shell 1 to be provided with sealing element 2 652, be provided on electric motor protecting shell 63
For the line outlet that motor is routed through, it is provided with outlet port sealing 631 in line outlet, improves the sealing of cleaning device entirety
Property.
Preferably, it is additionally provided with optocoupler 69 in waterproof jacket 65, the inductor 691 coordinated with optocoupler 69 is provided on axle sleeve,
Inductor 691 is oppositely arranged with optocoupler 69, when being completed to optical window 1, the cleaning of optical window 2 42, passes through optocoupler 69
Signal is sent out, optocoupler 69 is matched with inductor, determines the position of 68 brush head 682 of hairbrush after motor 62 stops not in optical window
Between one 32 optical windows 2 42 of mouth, brush head 682 is avoided to block optical signal.Motor 62 is set in shell 1.
Preferably, as depicted in figs. 1 and 2, it is arranged in the shell two of optical signal receiver there are two light signal receiving,
The optical window two of two light signal receivings is separately positioned on the both sides of shell two, and one is respectively set in the both sides of shell two
The optical window one of optical signal transmitter, optical signal transmitter is arranged in the side of shell one, and with the optical window of respective side
Two are oppositely arranged, that is, the optical signal launcher of the optical signal transmitter of respective side and the optical signal of corresponding side receive
Device is oppositely arranged, at that time, path channels one and the laterally setting of path channels two at this time.In the shell of each optical signal transmitter
Body one is respectively provided with cleaning device 6, make the both sides of the brush head 682 of hairbrush 68 respectively with 2 42 phase of optical window 1 and optical window
Fitting, in this way, two optical signal launchers are simultaneously emitted by signal, corresponding light signal receiving 21 receives
The signal that optical signal launcher is sent out, two light signal receivings 21 by the signal transmission to analytical equipment received,
Two data can be compared and be corrected by analytical equipment, avoid due to aquatic environment mutation and caused by testing result
Mutation improves the accuracy and reliability of testing result, and when a pair of of optical signal launcher 21 and light signal receiving
When something goes wrong, another pair optical signal launcher 21 and light signal receiving can also continue to work, avoid water sample ginseng
Number gatherer process interrupts, while being realized to two groups of optical windows 1 and optical window 2 42 by two groups of cleaning devices 6
It is cleaned, cleaning efficiency is high, convenient for control.Since two light signal receivings or optical signal hair being arranged in a shell
Injection device, and two optical signal launchers or light signal receiving be set in the both sides of shell, two sets optical signals receive with
Optical signal launcher distance is close, therefore, more sensitive for the variation of flow, the extraneous water quality mutation of judgement more easy to identify and sensing
The case where results such as device signal drift itself are mutated, it is more objective to the analysis of water quality.
Preferably, optical signal launcher is ultraviolet light source, and optical signal launcher can also be LED light source or infrared
Linear light source etc..
It is connected with path channels 1 and holding tank 41 as shown in Figure 1, being respectively arranged on shell 1 and shell 24
Opening 5, opening 5 on be provided with end cap 51, in this way setting facilitate by end cap 51 removes opening be open 5, to shell 1 or shell
Optical signal launcher/optical signal launcher 21 in 24 is repaired or replaced, end cap 51 and one/shell of shell two
Junction is provided with sealing element 3 52, ensures the sealing of shell 1 and shell 24, and extraneous water is avoided to enter path channels
1 and path channels 2 41 in, it is preferred that sealing element 1, sealing element 2 652, sealing element 3 52 can be rubber seals
Pad, it is preferred that end cap 51 is fixed on by screw 53 on shell 1 and shell 24, fixed secured and simple in structure.
As shown in Figure 1, it is preferred that the both sides of shell 24 can be setting be optical signal launcher 21, can also
It is optical signal launcher to be, can also be that side setting is optical signal launcher 21, the other side is optical signal launch
Device, when 24 side of shell, setting is optical signal launcher 21, when the other side is optical signal launcher, can be replaced
Multigroup optical signal transmitter 1 and optical signal receiver 2 are set, achieve that while acquiring more multigroup data in this way, as this
The preferred embodiment of embodiment, the both sides setting of shell 24 is optical signal launcher 21.
Above each preferred scheme can be combined arbitrarily.
Claims (9)
1. a kind of optics original position water quality detection system, including optical signal transmitter（1）And optical signal receiver（2）, optical signal hair
Emitter includes shell one（3）And optical signal launcher（11）, path channels one, the optical signal are provided on the shell one
Emitter setting is in path channels one and towards its optical window one, optical signal receiver（2）Including shell two（4）And light
Signal receiving device（21）, shell two（4）On be provided with holding tank, light signal receiving is set in holding tank, passes through it
Optical window two is oppositely arranged with optical signal launcher, which is characterized in that further includes cleaning device（6）, the cleaning device
（6）Including motor（62）, hairbrush（68）And connector（64）, the shell one（3）Or shell two（4）Inside it is provided with receiving
Chamber（61）, the motor is set to the accommodating chamber（61）Interior, the output end of the motor passes through connector（64）With institute
State hairbrush（68）Brush handle（681）It is connected, the hairbrush（68）Brush head（682）Outside shell one or shell two, brush head
Both sides respectively with optical window one（32）With optical window two（42）It is in contact.
2. optics original position as described in claim 1 water quality detection system, which is characterized in that the motor（62）Outside set
It is equipped with electric motor protecting shell（63）, the connector（64）Outside be provided with waterproof jacket（65）, the connector（64）Front end
Through the waterproof jacket（65）One end and the brush handle（681）It is fixedly connected, the waterproof jacket（65）The other end with it is described
Motor（62）Protective shell is fixedly connected.
3. optics original position as claimed in claim 2 water quality detection system, which is characterized in that the connector（64）For axle sleeve,
The both ends of the axle sleeve respectively with the motor（62）Output end and hairbrush（68）Brush handle（681）It is fixedly connected, it is described
It is provided with bearing between axle sleeve and the waterproof（66）, the bearing（66）It is set on the axle sleeve, the front end of the axle sleeve
With waterproof jacket（65）Junction be provided with sealing shroud（67）.
4. optics original position as claimed in claim 3 water quality detection system, which is characterized in that the waterproof jacket（65）Inside also set up
There is optocoupler, the inductor coordinated with optocoupler is provided on the axle sleeve（691）, the receiver and the optocoupler（69）It is opposite to set
It sets.
5. optics original position as claimed in claim 4 water quality detection system, which is characterized in that the motor（62）It is set to institute
State shell one（3）Interior, the both sides of the shell two are respectively arranged with a holding tank, and light letter is respectively arranged in the holding tank
Number reception device is respectively arranged with optical signal transmitter and cleaning device outside the both sides of the shell two（6）, the shell two
（4）Both sides in light signal receiving（12）Respectively with the optical signal launcher of respective side（11）It is corresponding.
6. optics original position as claimed in claim 4 water quality detection system, which is characterized in that the shell one（3）With shell two
（4）On be respectively arranged with and the path channels one（31）And holding tank（41）The opening being connected（5）, the opening（5）On
It is provided with end cap（51）.
7. optics original position as claimed in claim 3 water quality detection system, which is characterized in that the waterproof jacket（65）It is protected with motor
Protective case（63）Junction be provided with sealing element one（651）, the waterproof jacket（65）With the shell one（3）Junction setting
There is sealing element two（652）.
8. optics original position as claimed in claim 2 water quality detection system, which is characterized in that the electric motor protecting shell（63）On set
It is equipped with the line outlet being routed through for motor, outlet port sealing is provided in the line outlet（631）.
9. optics original position as claimed in claim 7 water quality detection system, which is characterized in that the end cap（51）With the shell
The junction of one/shell two is provided with sealing element three（52）, the end cap（51）Pass through screw（53）It is fixed on the shell one
（3）With the shell two（4）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810954239.0A CN108801923A (en) | 2018-08-21 | 2018-08-21 | A kind of optics original position water quality detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810954239.0A CN108801923A (en) | 2018-08-21 | 2018-08-21 | A kind of optics original position water quality detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108801923A true CN108801923A (en) | 2018-11-13 |
Family
ID=64080668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810954239.0A Pending CN108801923A (en) | 2018-08-21 | 2018-08-21 | A kind of optics original position water quality detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108801923A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694263Y (en) * | 2004-05-10 | 2005-04-20 | 国家海洋技术中心 | Seawater turbidity on-site monitoring sensor |
| CN105954282A (en) * | 2016-05-04 | 2016-09-21 | 浙江大学 | Underwater observation network-based water turbidity detection device and method thereof |
| CN205786295U (en) * | 2016-07-20 | 2016-12-07 | 中国科学院烟台海岸带研究所 | A kind of double light path water body environment on-line measurement device |
| CN205958442U (en) * | 2016-07-20 | 2017-02-15 | 中国科学院烟台海岸带研究所 | Double -light -path water environment on - line measuring device based on spectral measurement technique |
| CN106770023A (en) * | 2017-01-17 | 2017-05-31 | 谢锦宸 | The laser detection monitor and detection method of multi-chamber |
| CN108051401A (en) * | 2017-01-17 | 2018-05-18 | 谢锦宸 | Water monitoring device |
| CN207528618U (en) * | 2017-12-21 | 2018-06-22 | 中国科学院烟台海岸带研究所 | A kind of dual wavelength sea water COD on-line measurement device |
-
2018
- 2018-08-21 CN CN201810954239.0A patent/CN108801923A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694263Y (en) * | 2004-05-10 | 2005-04-20 | 国家海洋技术中心 | Seawater turbidity on-site monitoring sensor |
| CN105954282A (en) * | 2016-05-04 | 2016-09-21 | 浙江大学 | Underwater observation network-based water turbidity detection device and method thereof |
| CN205786295U (en) * | 2016-07-20 | 2016-12-07 | 中国科学院烟台海岸带研究所 | A kind of double light path water body environment on-line measurement device |
| CN205958442U (en) * | 2016-07-20 | 2017-02-15 | 中国科学院烟台海岸带研究所 | Double -light -path water environment on - line measuring device based on spectral measurement technique |
| CN106770023A (en) * | 2017-01-17 | 2017-05-31 | 谢锦宸 | The laser detection monitor and detection method of multi-chamber |
| CN108051401A (en) * | 2017-01-17 | 2018-05-18 | 谢锦宸 | Water monitoring device |
| CN207528618U (en) * | 2017-12-21 | 2018-06-22 | 中国科学院烟台海岸带研究所 | A kind of dual wavelength sea water COD on-line measurement device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6509958B2 (en) | Method for distance measurement and a distance measuring device | |
| US9228942B2 (en) | Turbidimeter | |
| CN105954192B (en) | A kind of double light path water body environment on-line measurement device based on spectral measurement methods | |
| DE602006007662D1 (en) | Leak detection system and method for marine hose assemblies | |
| DE602007012651D1 (en) | Optical window pollution detection device for an optical device | |
| CN105465611B (en) | A kind of drainage pipeline sonar detecting method | |
| CN203894168U (en) | Online water quality comprehensive toxicity detection device | |
| CN109490256A (en) | The marine domestic sewage turbidity detection device and detection method for having self-cleaning function | |
| US20080252879A1 (en) | Optical sample measurement device, optical cell and water quality measurement device | |
| CN108801923A (en) | A kind of optics original position water quality detection system | |
| CN110887945A (en) | Multi-parameter water quality sensor | |
| CN103728246A (en) | Seal type measuring device for glove box | |
| CN101957320A (en) | Portable optical mechanical system of underwater in-situ luminoscope | |
| CN105872340B (en) | Underwater camera | |
| CN2694263Y (en) | Seawater turbidity on-site monitoring sensor | |
| CN110293080A (en) | A kind of optical ranging sensor cleaning systems and clean method | |
| CN204374064U (en) | A kind of two-way self-cleaning fiber gas sensor sensing head | |
| CN208547574U (en) | A kind of correlation optics original position water quality sensor | |
| JP5072777B2 (en) | Sample measuring device | |
| CN205608184U (en) | Laser rangefinder equipment | |
| JP2657673B2 (en) | Underwater oil / gas leak detector | |
| CN109297876A (en) | A method of measurement dust concentration | |
| US20200088636A1 (en) | Optical sensor | |
| CN102854146A (en) | Infrared environmental gas remote sensing method and infrared environmental gas remote sensing device | |
| CN211785082U (en) | Durable waterproof turbidity detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |