CN209727756U - A kind of hand-held laser methane gas remote measurement instrument - Google Patents
A kind of hand-held laser methane gas remote measurement instrument Download PDFInfo
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- CN209727756U CN209727756U CN201822234244.2U CN201822234244U CN209727756U CN 209727756 U CN209727756 U CN 209727756U CN 201822234244 U CN201822234244 U CN 201822234244U CN 209727756 U CN209727756 U CN 209727756U
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Abstract
The utility model discloses a kind of hand-held laser methane gas remote measurement instrument, including for emitting laser and receiving the optical-mechanical system of reflection deflect light, for testing and analyzing the signal processing system of laser absorption amount, the display alarm system and housing unit exceeded for early warning methane concentration, housing unit includes the protective shell being detachably connected by screw, protective shell left end is fixedly installed with ray machine camera lens, protective shell leading flank is equipped with nameplate and pastes slot, protective shell right end is fixedly installed with operation panel, and operation panel is equipped with the switch key for remote sensing instrument switching on and shutting down and the charging hole for built-in lithium battery charging, protective shell bottom is connected with handle, laser key for opening laser is installed on handle, the structure design of the utility model is reasonable, the utility model is detected to realize first by the reflection light after absorbing methane gas The detection of alkane gas concentration has the characteristics that structure is simple, operation is convenient, easy to carry.
Description
Technical field
The utility model relates to gas detection technology field more particularly to a kind of hand-held laser methane gas remote measurement instrument.
Background technique
Methane detector is held to objective emission beam of laser, then detects the deflect light reflected from target, and then measure
Methane concentration between detector and target, for the infrared ray absorbing measurement for carrying out high concentration, instrument is modulated using Detection wavelength
It is divided second harmonic method, therefore has used near-infrared tuning diode.Detector is minimum when detection has the target of multiple reflection
Detection sensitivity is 100 ppm-m, and distance is 10 meters.Indoor exposed pipeline 10ml/ can be accurately searched under this mode at a distance
The gas leakage of minute.If minimum sensitivity uses 1000ppm-m, then measures distance and extend to 30 meters.In addition, if making
With reflector (retro reflector), then maximum measurement distance is up to 150 meters.
But existing hand-held laser methane remote sensing instrument volume is larger, is not easy to carry, in addition methane gas telemetering
Operating procedure is more complex in use for instrument, carry out methane gas detection when it is more complicated, have the defects that certain.
For this purpose, we have proposed a kind of hand-held laser methane gas remote measurement instrument.
Utility model content
The utility model provides a kind of hand-held laser methane gas remote measurement instrument, it is therefore intended that can quickly and easily carry out
The accurate detection of concentration of methane gas, and it is easy to carry.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions:
A kind of hand-held laser methane gas remote measurement instrument, including for emitting laser and receiving the ray machine system of reflection deflect light
System, the signal processing system for testing and analyzing laser absorption amount, the display alarm system exceeded for early warning methane concentration with
And housing unit, the housing unit include the protective shell being detachably connected by screw, the protective shell left end is fixedly mounted
There is ray machine camera lens, the protective shell leading flank is equipped with nameplate and pastes slot, and the protective shell right end is fixedly installed with operation panel, and
The operation panel is equipped with the switch key for remote sensing instrument switching on and shutting down and the charging hole for built-in lithium battery charging, described
Protective shell bottom is connected with handle, and the laser key for opening laser is equipped on the handle.
Preferably, in above-mentioned hand-held laser methane gas remote measurement instrument, the handle, which is equipped with, holds groove.
Based on above-mentioned technical characteristic, groove is held by setting, the frictional force being capable of increasing between manpower and handle avoids
Remote sensing instrument slides during gripping.
Preferably, in above-mentioned hand-held laser methane gas remote measurement instrument, the protective shell left outer surface is equipped with for electricity
The heat release hole of road heat dissipation.
It can accelerate the radiating efficiency inside protective shell by heat release hole is arranged based on above-mentioned technical characteristic, guarantee circuit
Work is within the scope of normal temperature.
Preferably, in above-mentioned hand-held laser methane gas remote measurement instrument, the optical-mechanical system includes single-chip microcontroller, optics reception dress
The semiconductor laser drive circuit plate set and connect with the single-chip microcontroller, the semiconductor laser drive circuit plate output end connect
It is connected to semiconductor laser.
Based on above-mentioned technical characteristic, control instruction, semiconductor are sent to semiconductor laser drive circuit plate by single-chip microcontroller
After laser driver circuit board receives control instruction, DC power-supply circuit, semiconductor laser hair are provided for semiconductor laser
Light simultaneously exposes to specified detection zone, and the light portion of sending is absorbed by methane gas, and reflected light is connect by optics
Receiving apparatus receives, and methane is detected according to reflection light to the absorptivity of light, and then realize the measurement to methane concentration.
Preferably, in above-mentioned hand-held laser methane gas remote measurement instrument, the signal processing system is modulus switching device, and
The output end of the signal processing system is connect with the single-chip microcontroller.
Based on above-mentioned technical characteristic, converted by the analog electrical signal that signal processing system receives optical receiver assembly
It for digital signal and is transmitted in single-chip microcontroller, realizes the detection to concentration of methane gas.
Preferably, in above-mentioned hand-held laser methane gas remote measurement instrument, the display alarm system includes display screen, buzzer
Driving circuit and buzzer, the display screen are fixedly mounted on the operation panel, the display screen and the single-chip microcontroller
Electrical connection, the buzzer drive circuit input terminal and the monolithic mechatronics, the buzzer drive circuit output end with
The buzzer electrical connection.
Based on above-mentioned technical characteristic, taken remote measurement the display of instrument data, including concentration of methane gas, electricity by display screen
Information, operation information etc., while relevant operation can also be carried out by touch display screen, when the methane concentration of detection is more than safety value
When, single-chip microcontroller issues control instruction to buzzer drive circuit, and buzzer drive circuit provides direct driving current for buzzer,
Buzzer sounds an alarm.
The beneficial effects of the utility model are:
The utility model is detected to realize concentration of methane gas by the reflection light after absorbing methane gas
Detection, can accurately detect the concentration of methane gas of area to be tested, have that structure is simple, operation is convenient, is convenient for
The characteristics of carrying.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the operating circuit structural schematic diagram of the utility model.
In attached drawing, parts list represented by the reference numerals are as follows:
1- optical-mechanical system；2- signal processing system；3- shows alarm system；4- housing unit；5- protective shell；6- ray machine mirror
Head；7- nameplate pastes slot；8- operation panel；9- switch key；10- charging hole；11- handle；12- laser key；13- holds recessed
Slot；14- heat release hole；15- single-chip microcontroller；16- optical receiver assembly；17- semiconductor laser drive circuit plate；18- semiconductor laser
Device；19- display screen；20- buzzer drive circuit；21- buzzer.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-2, the present embodiment is a kind of hand-held laser methane gas remote measurement instrument, including for emitting laser
The optical-mechanical system 1 of deflect light is reflected with reception, the signal processing system 2 for testing and analyzing laser absorption amount, is used for early warning first
The display alarm system 3 and housing unit 4 of alkane concentration over-standard, housing unit 4 include the protection being detachably connected by screw
Shell 5,5 left end of protective shell are fixedly installed with ray machine camera lens 6, and 5 leading flank of protective shell is equipped with nameplate and pastes slot 7, and 5 left side of protective shell is outer
Surface is equipped with the heat release hole 14 for circuit heat dissipation, by the way that heat release hole 14 is arranged, can accelerate the heat dissipation effect inside protective shell 5
Rate guarantees circuit work within the scope of normal temperature, and 5 right end of protective shell is fixedly installed with operation panel 8, and operation panel 8
It is equipped with the switch key 9 for remote sensing instrument switching on and shutting down and the charging hole 10 for built-in lithium battery charging, 5 bottom of protective shell connects
It is connected to handle 11, the laser key 12 for opening laser is installed on handle 11, handle 11, which is equipped with, holds groove 13, passes through
Setting holds groove 13, and the frictional force being capable of increasing between manpower and handle 11 avoids remote sensing instrument and occurs during gripping
It slides, optical-mechanical system 1 includes single-chip microcontroller 15, optical receiver assembly 16 and the semiconductor laser driving electricity connecting with single-chip microcontroller 15
Road plate 17,17 output end of semiconductor laser drive circuit plate are connected with semiconductor laser 18, by single-chip microcontroller 15 to semiconductor
Laser driver circuit board 17 sends control instruction, is semiconductor after semiconductor laser drive circuit plate 17 receives control instruction
Laser 18 provides DC power-supply circuit, and semiconductor laser 18 shines and exposes to specified detection zone, the light of sending
Part is absorbed by methane gas, and reflected light is received by optical receiver assembly 16, detects methane according to reflection light
To the absorptivity of light, and then realize the measurement to methane concentration, wherein optical receiver assembly 16 is photodetector, wherein single
Piece machine 15 use 89C51 type single-chip microcontroller, signal processing system 2 be modulus switching device, and the output end of signal processing system 2 with
Single-chip microcontroller 15 connects, and the analog electrical signal that optical receiver assembly 16 receives is converted to digital letter by signal processing system 2
Number and be transmitted in single-chip microcontroller 15, realize detection to concentration of methane gas, display alarm system 3 includes display screen 19, buzzing
Device driving circuit 20 and buzzer 21, display screen 19 are fixedly mounted on operation panel 8, and display screen 19 is electrically connected with single-chip microcontroller 15
It connects, 20 input terminal of buzzer drive circuit is electrically connected with single-chip microcontroller 15,21 electricity of 20 output end of buzzer drive circuit and buzzer
Connection is taken remote measurement display of instrument data, including concentration of methane gas, information about power, operation information etc., together by display screen 19
When can also carry out relevant operation by touch display screen 19, when the methane concentration of detection is more than safety value, single-chip microcontroller 15 is to bee
The device driving circuit 20 that rings issues control instruction, and buzzer drive circuit 20 provides direct driving current, buzzer hair for buzzer
Alarm out, wherein buzzer drive circuit 20 is transistor amplifier.
A kind of specific implementation of the utility model, when in use, push switch key 9 first opens methane gas telemetering
The ray machine camera lens 6 of remote sensing instrument is then directed toward methane gas region to be detected and presses laser key 12 by instrument, and semiconductor swashs at this time
Light device 18 issues detection light to methane gas detection zone, and detection light portion is absorbed by methane gas, is reflected back
Detection light received by optical receiver assembly 16, subsequent received detection light is converted to telecommunications by signal processing system 2
Number and be transmitted in single-chip microcontroller 15, single-chip microcontroller 15 according to reflected detection light electric signal calculate methane to detection light
Absorptivity, and then realize detection to concentration of methane gas, and concentration of methane gas real-time display works as first in display screen 19
When alkane gas concentration is more than setting value, buzzer 21 is sounded an alarm.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, does not limit the specific embodiment that the utility model is only yet.Obviously, according to this specification
Content, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, be in order to preferably explain
The principles of the present invention and practical application, so that skilled artisan be enable to better understand and utilize this practical
It is novel.The utility model is limited only by the claims and their full scope and equivalents.
Claims (3)
1. a kind of hand-held laser methane gas remote measurement instrument, it is characterised in that: including for emitting laser and receiving reflection deflect light
Optical-mechanical system (1), the signal processing system (2) for testing and analyzing laser absorption amount, exceeded for early warning methane concentration
Show alarm system (3) and housing unit (4), the housing unit (4) includes the protective shell being detachably connected by screw
(5), protective shell (5) left end is fixedly installed with ray machine camera lens (6), and protective shell (5) leading flank is equipped with nameplate and pastes slot
(7), protective shell (5) right end is fixedly installed with operation panel (8), and the operation panel (8) is equipped with and is used for remote sensing instrument
The switch key (9) of switching on and shutting down and the charging hole (10) to charge for built-in lithium battery, protective shell (5) bottom is connected with hand
Handle (11) is equipped with the laser key (12) for opening laser on the handle (11)；
The optical-mechanical system (1) includes single-chip microcontroller (15), optical receiver assembly (16) and connect with the single-chip microcontroller (15)
Semiconductor laser drive circuit plate (17), semiconductor laser drive circuit plate (17) output end are connected with semiconductor laser
(18)；
The signal processing system (2) is modulus switching device, and the output end of the signal processing system (2) and the monolithic
Machine (15) connection；
The display alarm system (3) includes display screen (19), buzzer drive circuit (20) and buzzer (21), described aobvious
Display screen (19) is fixedly mounted on the operation panel (8), and the display screen (19) is electrically connected with the single-chip microcontroller (15), described
Buzzer drive circuit (20) input terminal is electrically connected with the single-chip microcontroller (15), buzzer drive circuit (20) output end with
Buzzer (21) electrical connection.
2. a kind of hand-held laser methane gas remote measurement instrument according to claim 1, it is characterised in that: on the handle (11)
Equipped with holding groove (13).
3. a kind of hand-held laser methane gas remote measurement instrument according to claim 1, it is characterised in that: the protective shell (5)
Left outer surface is equipped with the heat release hole (14) for circuit heat dissipation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822234244.2U CN209727756U (en) | 2018-12-28 | 2018-12-28 | A kind of hand-held laser methane gas remote measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822234244.2U CN209727756U (en) | 2018-12-28 | 2018-12-28 | A kind of hand-held laser methane gas remote measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209727756U true CN209727756U (en) | 2019-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822234244.2U Active CN209727756U (en) | 2018-12-28 | 2018-12-28 | A kind of hand-held laser methane gas remote measurement instrument |
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| Country | Link |
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| CN (1) | CN209727756U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030019A (en) * | 2021-03-18 | 2021-06-25 | 数量级(上海)信息技术有限公司 | Miniature laser methane telemetering device |
| CN120489958A (en) * | 2025-07-15 | 2025-08-15 | 山西晋煤集团技术研究院有限责任公司 | High-precision handheld laser methane gas telemeter |
-
2018
- 2018-12-28 CN CN201822234244.2U patent/CN209727756U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030019A (en) * | 2021-03-18 | 2021-06-25 | 数量级(上海)信息技术有限公司 | Miniature laser methane telemetering device |
| CN120489958A (en) * | 2025-07-15 | 2025-08-15 | 山西晋煤集团技术研究院有限责任公司 | High-precision handheld laser methane gas telemeter |
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Address after: 450000 4 Units 4, 3, 24, 149 West Three Ring Road, hi tech Zone, Zhengzhou, Henan. Patentee after: HENAN OUTAIWEIER ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 450000 High-tech District, Zhengzhou City, Henan Province, 149 Third Ring Road, Building 4, Unit 3, Floor 24 Patentee before: HENAN OUTAIWEIER ELECTRONIC TECHNOLOGY Co.,Ltd. |