CN113252849A - Method for solving zero return and adjusting TRIZ of panel of methane detection alarm - Google Patents
Method for solving zero return and adjusting TRIZ of panel of methane detection alarm Download PDFInfo
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- CN113252849A CN113252849A CN202110524222.3A CN202110524222A CN113252849A CN 113252849 A CN113252849 A CN 113252849A CN 202110524222 A CN202110524222 A CN 202110524222A CN 113252849 A CN113252849 A CN 113252849A
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- diffusion
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- shell
- dust
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- PGLIUCLTXOYQMV-UHFFFAOYSA-N Cetirizine hydrochloride Chemical compound Cl.Cl.C1CN(CCOCC(=O)O)CCN1C(C=1C=CC(Cl)=CC=1)C1=CC=CC=C1 PGLIUCLTXOYQMV-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000009792 diffusion process Methods 0.000 claims abstract description 73
- 239000000428 dust Substances 0.000 claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims description 9
- 239000010408 film Substances 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000009931 harmful effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002407 reforming Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
Abstract
The invention provides a method for solving zero return and panel adjustment TRIZ of a methane detection alarm, which comprises the following steps: optimizing a front shell of the instrument, optimizing a rear cover of the cavity, optimizing a diffusion window, rectifying and reforming the diffusion window, and optimizing a control panel; the beneficial effects are that: the method for solving the problems of zero return and panel adjustment TRIZ of the methane detection alarm provided by the invention adopts an electronic type membrane switch, and the exhaust holes of the air bag circulating systems in the keys are introduced into the instrument shell for exhausting and sucking to achieve the aim of flexibly bouncing the air bag keys, the shell blocks dust in the external environment, and the exhaust circulation is not influenced by the external dust to ensure that the keys work normally.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a method for solving zero return and adjusting TRIZ of a panel of a methane detection alarm.
Background
The methane detector is an explosion-proof instrument capable of continuously detecting the concentration of methane. The device is suitable for methane leakage emergency rescue, methane concentration detection of underground pipelines or mines and other places, and can effectively ensure that the life safety of workers is not damaged. According to the national standard requirements, when the methane detection alarm instrument is delivered for detection and inspection, the methane gas is filled in the instrument for calibration, and then the gas filling pipe is pulled out, so that the instrument is placed in fresh air, and the reading of the instrument returns to zero within 20S. However, in the prior art, the methane-containing gas chamber is not smoothly discharged, and the instrument cannot return to zero within 20 seconds.
And the membrane panel switch of the methane detector is a key switch applied to the underground coal mine methane detection alarm product in a special environment, the switch consists of four keys, an internal connection circuit is used, one section of the switch is not bounced when the keys are used, and part of the keys are damaged.
Disclosure of Invention
The invention aims to provide a method for solving zero return and panel adjustment TRIZ of a methane detection alarm so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a solving zero returning and panel adjusting TRIZ method of a methane detection alarm comprises the following steps:
the method comprises the following steps: optimizing an instrument front shell, performing condition separation according to a required diffusion window, designing an original circular window of a front cover of a chamber into a shutter type diffusion, and increasing the diffusion;
step two: optimizing a rear cover of the cavity, and performing shutter type diffusion on the original rear cover of the cavity in a spatially separated windowing manner to solve the problems of uniform diffusion and convection diffusion of a diffusion window;
step three: the diffusion window is optimized, a dustproof net is arranged on the diffusion window, the diffusion window is prevented from diffusing, the coal bed cannot enter the cavity of the instrument, and the harmful effect is eliminated or counteracted by a material-field method;
step four: the diffusion window is modified, the dust screen is arranged on the diffusion window, so that the coal bed cannot enter the cavity, the instrument cavity is protected, but the diffusion of the diffusion window is prevented, the performance of the system is not fully improved in a material-field manner, the size or the shape of the diffusion window is changed, and a certain detection requirement is met;
step five: the control panel is optimized, an electronic type membrane switch is adopted, exhaust holes of an air bag circulating system in each key are led into the instrument shell to be discharged and sucked, the air bag keys are bounced flexibly, the shell blocks dust in the external environment, and the exhaust circulation is not influenced by the external dust to ensure that each key works normally.
Preferably, in the second step, the chamber is a square combination, in order to enable the detected methane gas to enter the chamber and then pull out the standard gas, the instrument is placed in the fresh air, the methane in the chamber can be diffused out within a specified time, the instrument displays zero within 20S, and the diffusion mode is designed into bidirectional strip-shaped shutter diffusion window convection.
Preferably, in the fifth step, the covering film has elasticity, each key can be flexibly bounced, the exhaust hole position is separated into the thin film switch circuit lead row, and the exhaust hole exhausts in the shell.
Preferably, in the fifth step, the control panel is controlled by weak current signals.
Preferably, in the fifth step, the original exhaust pipeline is removed, the exhaust hole is introduced into the instrument shell, the instrument shell has a dustproof effect, dust in the air cannot enter the shell, each key airbag is not affected by the dust, and the keys are normally used.
Compared with the prior art, the invention has the beneficial effects that:
1. the method for solving the problems of zero return and panel adjustment and calibration TRIZ of the methane detection alarm provided by the invention adopts an electronic type membrane switch, and leads the exhaust holes of the air bag circulating systems in the keys into the instrument shell for exhausting and sucking to achieve the aim that the air bag keys are bounced flexibly, the shell blocks dust in the external environment, and the exhaust circulation is not influenced by the external dust to ensure that the keys work normally;
2. the invention provides a method for solving zero return and panel adjustment TRIZ of a methane detection alarm instrument, which is characterized in that a cavity is designed into a square combination, in order to enable detected methane gas to be pulled out after entering the cavity, the methane in the cavity can be diffused out within a specified time after the instrument is placed in fresh air, the instrument displays zero return within 20S, and the diffusion mode is designed into bidirectional strip-shaped shutter diffusion window convection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a control panel according to the present invention
In the figure: the device comprises a calibration console 1, standard gas 2, an air duct 3, a cavity 4, a diffusion window 5, an instrument front shell 6, a cavity rear cover 7, a dust screen 8, a sensor baffle 9, an operation panel 10, a key switch 11, a coating film 12, a circulating pipeline 13 and an exhaust hole 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: a solving zero returning and panel adjusting TRIZ method of a methane detection alarm comprises the following steps:
the method comprises the following steps: optimizing an instrument front shell, performing condition separation according to a required diffusion window, designing an original circular window of a front cover of a chamber into a shutter type diffusion, and increasing the diffusion;
step two: optimizing a rear cover of the cavity, and performing shutter type diffusion on the original rear cover of the cavity in a spatially separated windowing manner to solve the problems of uniform diffusion and convection diffusion of a diffusion window;
step three: the diffusion window is optimized, a dustproof net is arranged on the diffusion window, the diffusion window is prevented from diffusing, the coal bed cannot enter the cavity of the instrument, and the harmful effect is eliminated or counteracted by a material-field method;
step four: the diffusion window is modified, the dust screen is arranged on the diffusion window, so that the coal bed cannot enter the cavity, the instrument cavity is protected, but the diffusion of the diffusion window is prevented, the performance of the system is not fully improved in a material-field manner, the size or the shape of the diffusion window is changed, and a certain detection requirement is met;
step five: the control panel is optimized, an electronic type membrane switch is adopted, exhaust holes of an air bag circulating system in each key are led into the instrument shell to be discharged and sucked, the air bag keys are bounced flexibly, the shell blocks dust in the external environment, and the exhaust circulation is not influenced by the external dust to ensure that each key works normally.
The chamber is a square combination, in order to enable the detected methane gas to enter the chamber and then pull out the standard gas, the instrument is placed in the fresh air, the methane in the chamber can be diffused out within a specified time, the instrument is enabled to display the return-to-zero value within 20S, and the diffusion mode is designed into the convection of a bidirectional strip-shaped shutter diffusion window.
The covering film has elasticity, each key can be flexibly bounced, the exhaust hole position is separated into the lead row of the film switch circuit, and the exhaust hole exhausts in the shell; the control panel is controlled by weak current signals; get rid of original exhaust pipe, inside the exhaust hole introduced the instrument casing, had dustproof effect in the instrument casing, inside the unable casing that gets into of dust in the air, each button gasbag did not receive the dust influence, and the button uses normally.
The working principle is as follows: when solving control panel button problem, mainly consider: 1. the internal circulation exhaust can not make the key flexibly bounce, and the exhaust hole is increased; 2. the exhaust pipeline in the air bag is smooth, dust is not introduced, and all the keys work normally; 3. the switch film is adhered to the whole internal structure of the sealed panel, and the switch circuit film is coated in the thin film switch panel; 4. an exhaust pipeline is used for circulating gas in the key airbag to achieve key work, and an operator presses the switch airbag to start a switch circuit; 5. the convex-concave pressing contact circuit with the air bag structure achieves the switching effect, and an operator presses the switch air bag to start the switching circuit; 6. pressing the air circulation system of the air bag exhaust pipeline into the air bags of other keys, and circulating the air circulation system in the exhaust pipeline through the exhaust hole to enhance the sensitivity of the air bag ventilation key; 7. the air in the air bag pipeline loop in the switch key is exhausted, and the functions of flexibly exhausting the air through the pipeline port and bouncing the air into the air bag when the key is used are obviously improved; 8. the exhaust hole of the panel switch is easy to enter dust in a circulating way, and the exhaust circulating hole is introduced into the instrument shell, so that the dust is reduced; 9. the vent hole acts on the key airbag, and dust is prevented by introducing the vent hole into the shell; 10. the problem that dust enters a circulating pipeline is solved, so that each switch key is flexible and reliable due to the fact that the switch key is provided with an elastic switch key; 11. the electronic switch is generally controlled by weak current signals, the contacted current is extremely micro, and the current application is wider and wider; 12. get rid of the exhaust management, inside the bar exhaust hole introduced instrument casing, had dust keeper in the instrument casing, dust in the air can't get into the gasbag button from the gas pocket.
When solving the instrument zeroing problem, the following main considerations are taken into account: 1. the dust screen is arranged to influence diffusion, so that dust is prevented from entering the cavity; 2. changing the shape or configuration of the diffusion window of the chamber; 3. the circuit is kept stable for detection by using a sensing Wheatstone bridge circuit, the electric signal is linearly amplified and converted into a digital signal for realizing detection, a digital tube display circuit of a microprocessor displays the methane concentration and returns to zero, and a high-capacity small-volume intrinsic safety battery is adopted for supplying power; 4. the sensor welding plate is used as a baffle on one side of the cavity, the sensor circuit board is welded, the cavity can be made on one side of the cavity, and the original shell, the rear cover and the sensor welding plate are combined to form the cavity, so that the cost is reduced; 5. the flow control of the standard gas and the pressure valve of the calibration stand is used for entering the standard gas to provide detection, and the dust screen in the chamber is used for preventing external dust from entering the chamber; 6. rapidly pressing the mixed gas in the balloon into the cavity by using the air blowing balloon to dilute the residual gas in the cavity; 7. the over-diffusion of the cavity detects that the display of the introduced methane standard gas is inaccurate, and the under-pulled standard gas does not return to zero in fresh air, thereby influencing the testing precision; 8. the diffusion window is solved, the original round window of the front cover of the chamber is designed into a shutter type diffusion, and the diffusion is increased; 9. the problem of uniform diffusion of the diffusion window is solved, and the shutter type diffusion and convection diffusion of the window are added to the original rear cover of the chamber; 10. the diffusion window is provided with the dust screen to prevent the diffusion window from diffusing, so that a cavity of the instrument is protected, and a coal bed cannot enter the cavity; 11. the diffusion window is provided with the dust screen, so that the coal bed cannot enter the cavity, the cavity of the instrument is protected, the diffusion of the diffusion window is prevented, the size or the shape of the diffusion window is changed, and a certain detection requirement is met; 12. and removing the dustproof net, and designing the diffusion windows on two sides of the chamber into dustproof windows.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A solving zero returning and panel adjusting TRIZ method of a methane detection alarm is characterized by comprising the following steps:
the method comprises the following steps: optimizing an instrument front shell, performing condition separation according to a required diffusion window, designing an original circular window of a front cover of a chamber into a shutter type diffusion, and increasing the diffusion;
step two: optimizing a rear cover of the cavity, and performing shutter type diffusion on the original rear cover of the cavity in a spatially separated windowing manner to solve the problems of uniform diffusion and convection diffusion of a diffusion window;
step three: the diffusion window is optimized, a dustproof net is arranged on the diffusion window, the diffusion window is prevented from diffusing, the coal bed cannot enter the cavity of the instrument, and the harmful effect is eliminated or counteracted by a material-field method;
step four: the diffusion window is modified, the dust screen is arranged on the diffusion window, so that the coal bed cannot enter the cavity, the instrument cavity is protected, but the diffusion of the diffusion window is prevented, the performance of the system is not fully improved in a material-field manner, the size or the shape of the diffusion window is changed, and a certain detection requirement is met;
step five: the control panel is optimized, an electronic type membrane switch is adopted, exhaust holes of an air bag circulating system in each key are led into the instrument shell to be discharged and sucked, the air bag keys are bounced flexibly, the shell blocks dust in the external environment, and the exhaust circulation is not influenced by the external dust to ensure that each key works normally.
2. The method for solving the problem of returning to zero and adjusting the panel of the methane detection alarm instrument as claimed in claim 1, wherein the method comprises the following steps: in the second step, the chamber is a square combination, in order to enable the detected methane gas to enter the chamber and then pull out the standard gas, the instrument is placed in the fresh air, the methane in the chamber can be diffused out within a specified time, the instrument displays zero within 20S, and the diffusion mode is designed into bidirectional strip-shaped shutter diffusion window convection.
3. The method for solving the problem of returning to zero and adjusting the panel of the methane detection alarm instrument as claimed in claim 1, wherein the method comprises the following steps: and step five, the covering film has elasticity, each key can be flexibly bounced, the exhaust hole position is separated into the lead row of the thin film switch circuit, and the exhaust hole exhausts in the shell.
4. The method for solving the problem of returning to zero and adjusting the panel of the methane detection alarm instrument as claimed in claim 1, wherein the method comprises the following steps: and in the fifth step, the control panel is controlled by weak current signals.
5. The method for solving the problem of returning to zero and adjusting the panel of the methane detection alarm instrument as claimed in claim 1, wherein the method comprises the following steps: and step five, removing the original exhaust pipeline, introducing the exhaust hole into the instrument shell, and preventing dust in the instrument shell, wherein dust in the air cannot enter the shell, and each key airbag is not influenced by the dust, so that the keys are normally used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110524222.3A CN113252849A (en) | 2021-05-13 | 2021-05-13 | Method for solving zero return and adjusting TRIZ of panel of methane detection alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110524222.3A CN113252849A (en) | 2021-05-13 | 2021-05-13 | Method for solving zero return and adjusting TRIZ of panel of methane detection alarm |
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| Publication Number | Publication Date |
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| CN113252849A true CN113252849A (en) | 2021-08-13 |
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|---|---|---|---|
| CN202110524222.3A Pending CN113252849A (en) | 2021-05-13 | 2021-05-13 | Method for solving zero return and adjusting TRIZ of panel of methane detection alarm |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201167051Y (en) * | 2008-02-26 | 2008-12-17 | 中兴通讯股份有限公司 | Key-press film switch for an electric appliance |
| CN202258929U (en) * | 2011-09-28 | 2012-05-30 | 深圳市同心键科技有限公司 | Spacer structure for metal thin film switch as well as metal thin film switch using same |
| TWM433628U (en) * | 2011-10-31 | 2012-07-11 | Ko Ja (Cayman) Co Ltd | Light transmissive keyboard structure improvement |
| CN203455343U (en) * | 2013-08-16 | 2014-02-26 | 天津市马克尼电子仪器有限公司 | Portable methane detecting alarm with independent gas chamber |
| US20140157864A1 (en) * | 2011-07-20 | 2014-06-12 | Corentium As | Gas sensor |
| CN204903527U (en) * | 2015-08-19 | 2015-12-23 | 扬州东江矿用器材有限公司 | Methane detection alarm appearance with detachable air cock |
| CN205092177U (en) * | 2015-11-16 | 2016-03-16 | 成都功达电子科技有限公司 | Flexible mining membrane switch |
| CN209182230U (en) * | 2018-10-27 | 2019-07-30 | 山西晋煤集团技术研究院有限责任公司 | A kind of coal mine portable mobile wireless laser methane detection alarm |
| CN211858467U (en) * | 2020-03-23 | 2020-11-03 | 杭州和能电子科技有限公司 | Dustproof and waterproof structure of membrane switch |
-
2021
- 2021-05-13 CN CN202110524222.3A patent/CN113252849A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201167051Y (en) * | 2008-02-26 | 2008-12-17 | 中兴通讯股份有限公司 | Key-press film switch for an electric appliance |
| US20140157864A1 (en) * | 2011-07-20 | 2014-06-12 | Corentium As | Gas sensor |
| CN202258929U (en) * | 2011-09-28 | 2012-05-30 | 深圳市同心键科技有限公司 | Spacer structure for metal thin film switch as well as metal thin film switch using same |
| TWM433628U (en) * | 2011-10-31 | 2012-07-11 | Ko Ja (Cayman) Co Ltd | Light transmissive keyboard structure improvement |
| CN203455343U (en) * | 2013-08-16 | 2014-02-26 | 天津市马克尼电子仪器有限公司 | Portable methane detecting alarm with independent gas chamber |
| CN204903527U (en) * | 2015-08-19 | 2015-12-23 | 扬州东江矿用器材有限公司 | Methane detection alarm appearance with detachable air cock |
| CN205092177U (en) * | 2015-11-16 | 2016-03-16 | 成都功达电子科技有限公司 | Flexible mining membrane switch |
| CN209182230U (en) * | 2018-10-27 | 2019-07-30 | 山西晋煤集团技术研究院有限责任公司 | A kind of coal mine portable mobile wireless laser methane detection alarm |
| CN211858467U (en) * | 2020-03-23 | 2020-11-03 | 杭州和能电子科技有限公司 | Dustproof and waterproof structure of membrane switch |
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Application publication date: 20210813 |