CN106442640A - Gas detection apparatus and gas detection method using gas detection apparatus - Google Patents
Gas detection apparatus and gas detection method using gas detection apparatus Download PDFInfo
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- CN106442640A CN106442640A CN201510475941.5A CN201510475941A CN106442640A CN 106442640 A CN106442640 A CN 106442640A CN 201510475941 A CN201510475941 A CN 201510475941A CN 106442640 A CN106442640 A CN 106442640A
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Abstract
The present invention discloses a gas detection apparatus and a gas detection method using the gas detection apparatus. The gas detection apparatus comprises a housing, a gas detector, a first valve, a second valve and a forced gas discharge element, wherein the housing is provided with a cavity, an inlet and an outlet, the gas detector is arranged in the cavity, the first valve selectively closes or opens the inlet, the second valve selectively closes or opens the outlet, and the forced gas discharge element is arranged on the outlet.
Description
Technical field
The present invention relates to a kind of gas sensing device and the gas sensing method applying it, and more particularly to
A kind of gas sensing device with forced exhaust element and the gas sensing method applying it.
Background technology
Traditional gas sensing device includes blowpipe and flow rate detector.User sends into gas against blowpipe
Body, this gas detects gas flow by flow rate detector.However, traditional gas detector can only be surveyed
Flow, makes the range of application of gas detecting machine be restricted.
Therefore, how the range of application of enlargement gas detector is the target that the art dealer makes great efforts
One of.
Content of the invention
It is an object of the invention to provide a kind of gas sensing device and the gas sensing method applying it, can
The composition of detecting under test gas.
According to one embodiment of the invention, a kind of gas sensing device is proposed.Gas sensing device includes a shell
Body, a gas detecting machine, one first valve, one second valve and a forced exhaust element.Housing has
One cavity, an entrance and an outlet.Gas detecting machine is in cavity.First valve selectively closes off
Or unlatching entrance.Second valve selectively closes off or opens outlet.Forced exhaust element is located at outlet.
According to another embodiment of the present invention, a kind of gas sensing method is proposed.Gas sensing method include with
Lower step.There is provided a gas sensing device, wherein gas sensing device includes a housing, a gas sensing
Device, one first valve, one second valve and a forced exhaust element, wherein housing have a cavity, one
Entrance and an outlet, in cavity, the first valve selectively turns on or closes entrance gas detecting machine,
Second valve selectively turns on or closes outlet, and forced exhaust element is located at outlet；Forced exhaust
Element is by the cavity of a under test gas inspiration gas sensing device；Control the first valve closing entrance；Control
Make the second valve closing outlet；And, gas detecting machine detects under test gas.
More preferably understand to have to the above-mentioned and other aspect of the present invention, preferred embodiment cited below particularly,
And coordinate appended accompanying drawing, it is described in detail below：
Brief description
Fig. 1 is the sectional view of the gas sensing device of one embodiment of the invention；
Fig. 2 is the flow chart of the gas sensing method of one embodiment of the invention；
Fig. 3 is the signal output figure of second pin of gas detecting machine of Fig. 1；
The schematic diagram that the gas sensing device for Fig. 1 for the Fig. 4 is connected with gas collection element；
Fig. 5 is the schematic diagram of the gas detecting machine detecting gas of the embodiment of the present invention；
Fig. 6 is the schematic diagram of the forced exhaust element forced exhaust of the embodiment of the present invention；
Fig. 7 is the sectional view of the gas sensing device of another embodiment of the present invention.
Symbol description
10：Gas collection element
10a：Opening
20：Trachea
30：Retaining element
100：Gas sensing device
110：Housing
110a：Entrance
110b：Outlet
110c：Cavity
120：Gas detecting machine
121：First pin
122：Second pin
130：First valve
140：Second valve
150：Forced exhaust element
160：Heater
170：Filter element
180：Controller
190：Indicator
G1：Under test gas
L1：Lower limit
L2：Higher limit
S：Signal
S110 to S195：Step
X：Stationary value
t1、t2、t3、t4：Time point
T1：Preset Time is interval
Specific embodiment
Fig. 1 illustrates the sectional view of the gas sensing device 100 according to one embodiment of the invention.Gas sensing
Device 100 includes housing 110, at least one gas detecting machine 120, the first valve 130, the second valve
140th, forced exhaust element 150, heater 160, filter element 170, controller 180 and indicator
190.
Housing 110 has cavity 110c, entrance 110a and outlet 110b.
Gas detecting machine 120 in cavity 110c, in order to detect the composition of under test gas G1.This
In embodiment, the quantity of gas detecting machine 120 is multiple, its detect respectively under test gas several are specific
Composition.Controller 180 can be analyzed this little special component and judge whether testee has specific disease, such as
Chronic obstructive pulmonary disease (COPD), influenza, alcohol concentration, cancer etc..
Gas detecting machine 120 includes several pins (pin), such as the first pin 121 and the second pin 122.
First pin 121 is heating pin, in order to improve the temperature of gas detecting machine 120, to form the negative of oxygen
Ion, to produce adsorption, causes the electron density in internal semiconductor to reduce and make resistance value liter
High；Specifically, when absorbing and reducing gas, such as natural gas, carbon monoxide etc., can be by reproducibility gas
Body replaces the oxygen of absorption, and the electron density in turn resulting in quasiconductor increases, and so that resistance value is increased.More than
Principle for semi-conductor gas detector.Additionally, the first pin 121 can be warming up to a preset temperature (such as
300 degree Celsius).Second pin 122 is signal pin, in order to export a signal S (being illustrated in Fig. 3) to
Controller 180.Signal S can become with temperature；When signal S reaches a stationary value, this stationary value can
Basis reference as gas sensing signal.
Additionally, housing 110 has thermal insulation or low-thermal conductivity, cavity 110c and housing 110 can be reduced
Outer surface between conduction of heat.In another embodiment, housing 110 can be by the high material of pyroconductivity
Make, under here design, gas sensing device 100 also includes a clad (not illustrating), its conduction of heat
Rate is less than the pyroconductivity of housing 110, equally can reduce cavity 110c and housing 110 outer surface it
Between conduction of heat.
First valve 130 is located at entrance 110a.First valve 130 can be according to pumping, gas sensing, row
On the difference opportunity such as gas, selectively close off or open entrance 110a.Additionally, the second valve 140 is located at going out
Mouth 110b；Similarly, the second valve 140 can according to pumping, gas sensing, aerofluxuss etc. difference opportunity,
Selectively close off or open outlet 110b.
Forced exhaust element 150, located at outlet 110b, under test gas G1 is pumped in cavity 110c,
Or discharge under test gas G1 outside housing 110.In one embodiment, forced exhaust element 150 is, for example,
Fan (fan).In addition although forced exhaust element 150 to the second valve 140 of the present embodiment is away from sky
Chamber 110c, but the embodiment of the present invention is not limited, the forced exhaust element 150 of another embodiment is comparable
Second valve 140 is closer to cavity 110c.
Heater 160 in cavity 110c, in order to improve the temperature of cavity 110c, to shorten gas
First pin 121 of detector 120 is warming up to the time of preset temperature.Further say, due to heating
Device 160 is heated with the first pin 121 simultaneously, therefore can reduce cavity 110c and gas detecting machine 120
Between the temperature difference, and then the time that the temperature of the first pin 121 is increased to preset temperature can be reduced.Another
In embodiment, also can omit heater 160.
In the present embodiment, filter element 170 is located at entrance 110a.Filter element 170 is, for example, biological mistake
Filter thin film.Under test gas G1 can first pass through filter element 170 before entering cavity 110c, is treated with filtering
Survey antibacterial, virus or other granule that may affect detecting accuracy of gas G1.In addition although this
Filter element 170 to the first valve 130 of embodiment is closer to cavity 110c, but the embodiment of the present invention
It is not limited, the first valve 130 of another embodiment is than filter element 170 closer to cavity 110c.
Controller 180 is in order to control heater 160 and the row of pressure according to the signal S of gas detecting machine 120
At least one running of gas element 150, and controllable first valve 130 and/or the second valve 140 open or
Close.
The flow chart that Fig. 2 illustrates the gas sensing method according to one embodiment of the invention.
In step s 110, provide gas sensing device 100 as shown in Figure 1.
In the step s 120, controller 180 can control the first valve 130 and cuts out entrance 110a, such as schemes
Shown in 1.
In step s 130, controller 180 can control the second valve 140 and cuts out outlet 110b, such as schemes
Shown in 1.
In step S140, controller 180 controls heater 160 heating cavities 110c and controls gas
First pin 121 of detector 120 heats up.Due to heater 160 heating cavities 110c simultaneously, therefore
The temperature difference between cavity 110c and gas detecting machine 120 can be reduced, and then shorten gas detecting machine 120
It is heated to the required time of preset temperature.Consequently, it is possible to the time of gas sensing can be shortened.
In step S150, as shown in figure 3, it illustrates the second of the gas sensing device 100 of Fig. 1
The signal output figure of pin 122.Controller 180 judges the second pin 122 of gas detecting machine 120
Whether output signal S (as voltage or current signal) is less than a lower limit L1；If so, enter step S155；
If it is not, entering step S160.To enter step S155 for example, as time point t1, signal S
Less than lower limit L1, represent that the temperature of gas detecting machine 120 is not enough to allow signal S reach stationary value X
Permissible range in (as in the range of L1 to L2), then controller 180 control heater 160 raise cavity
110c temperature (step S155), is then return to step S150, continues to judge whether signal S is less than lower limit
Value L1.
To enter step S160 for example, when output signal S is not less than lower limit L1, controller 180
Determine whether whether signal S is higher than higher limit L2；If so, then enter step S165；If it is not, entering
Enter step S170.To enter step S165 for example, when time point t2 (as shown in Figure 3), letter
Number S is higher than higher limit L2, represents that the temperature of gas detecting machine 120 is too high, causes signal S to exceed surely
The permissible range of definite value X, then controller 180 control forced exhaust element 150 operate, to reduce cavity
110c temperature, is then return to step S160, continues to judge whether signal S is higher than higher limit L2.
To enter step S170 for example, when signal S is not higher than higher limit L2, controller 180 enters
One step judges that whether signal S is located at higher limit L2 with the time of lower limit L1 more than a Preset Time area
T1 (as shown in Figure 3)；If so, enter step S180；If it is not, returning to step S150.For example, such as
Shown in Fig. 3, in the Preset Time interval T1 of time point t3 to t4, signal S is stably positioned in the upper limit
Between value L2 and lower limit L1, represent that signal S tends towards stability, signal S now can be as gas
The basis reference of body detection signal.
In step S180, when signal S tends towards stability, represent that the preparation of gas sensing completes (i.e.,
Gas sensing can be proceeded by), controller 180 controls indicator 190 to send indication signal according to this.
In one embodiment, indication signal can be the signal that coloured light, sound or other have instruction function.
In step S185, as shown in figure 1, providing a gas collection element 10, trachea 20 and fixing unit
Part 30.Gas collection element 10 is in order to collect under test gas G1.Trachea 20 is connected to gas collection element 10
Opening 10a.Retaining element 30 can tightly hold trachea 20 and gas collection element 10, it is to avoid gas to be measured
Body G1 is escaped by the junction of trachea 20 and gas collection element 10.
In one embodiment, gas collection element 10 is, for example, air bag.Trachea 20 is, for example, hard pipe fitting, therefore
The first valve 130 of gas sensing device 100 can be promoted, to open entrance 110a, make gas collection element 10
Inside communicate with entrance 110a.For material, trachea 20 can be by plastic cement, metal or other suitable
Material is made, and retaining element 30 is, for example, the holder of clasp, rubber band or other suitable species.
Fig. 4 illustrates the schematic diagram that the gas sensing device 100 of Fig. 1 is connected with gas collection element 10.Use
Person can breathe out under test gas G1 by trachea 20 and enter inside gas collection element 10, then again by trachea 20
It is connected to gas sensing device 100, so that the inside of gas collection element 10 is connected with gas sensing device 100.
Because trachea 20 has enough hardness or intensity, therefore can promote the first valve 130 easily, make the first valve
Door 130 unlatching entrance 110a.
In step S190, after gas collection element 10 is connected with gas sensing device 100, controller
Under test gas G1 in gas collection element 10 are pumped into cavity 110c by 180 controllable forced exhaust elements 150
Interior.In one embodiment, a button can be triggered, to start the control function of controller 180.Another enforcement
In example, when controller 180 detects (for example passing through the sensor being suitable for) gas collection element 10 and gas sensing dress
Put 100 connections, automatically control forced exhaust element 150 by under test gas G1 in gas collection element 10
It is pumped in cavity 110c.
Before or after pumping, controller 180 can control the second valve 140 and opens；Or, controller 180
Also the second valve 140 can not be controlled to open, by controlling the suction of forced exhaust element 150, can force
Second valve 140 is opened.Additionally, under test gas G1 in pumping process, in gas collection element 10
First pass through filter element 170, to filter the antibacterial of under test gas G1, virus or other unnecessary
Grain etc., to improve the accuracy of gas sensing.In another embodiment, filter element 170 can be treated in being blown into
Survey gas G1 behind gas collection element 10 inside, then arrange in trachea 20, so still can reach similar
Filter effect.As long as first passing through filter element 170 before under test gas G1 enter into cavity 110c,
The embodiment of the present invention does not limit the set location of filter element 170.
Additionally, in pumping process, controller 180 is sustainable to control heater 160 and/or forced exhaust
Element 150 operates, and signal S (as shown in Figure 3) is controlled in the permissible range of stationary value X.
In step S195, as shown in figure 5, it illustrates the gas detecting machine according to the embodiment of the present invention
The schematic diagram of detecting gas.After most of or enough under test gas G1 enter cavity 110c, gas
Detector 120 starts to detect the composition of under test gas G1.Before detecting, can first separate gas collection element 10
With gas sensing device 100；Then controller 180 controls the first valve 130 and the second valve 140 to close
Close, it is to avoid under test gas G1 escape from the first valve 130 and the second valve 140.In another embodiment,
First valve 130 has and automatically replies function (can be realized by flexible member), makes when gas collection element 10 and gas
After body detector 100 separates, the first valve 130 is automatically switched off；Under here design, controller 180
The first valve 130 can not be especially controlled to close.
In another embodiment, during detecting under test gas G1, also can retain gas collection element 10 in gas
(gas collection element 10 as shown in Figure 4 and gas sensing device 100 is maintained on body detector 100
Connection status)；Under here design, the first valve 130 is in opening, and the second valve 140 is in close
Closed state.
Fig. 6 illustrates the schematic diagram of the forced exhaust element forced exhaust according to the embodiment of the present invention.In gas
After detecting terminates, controller 180 can control the second valve 140 and opens, and controls forced exhaust element 150
Operating, under test gas G1 in cavity 110c are discharged outside housing 110.So, can avoid to be measured
Gas G1 residues in cavity 110c negatively affects gas sensing accuracy next time.Another reality
Apply in example, controller 180 can control the first valve 130 and the second valve 140 is opened, by sky simultaneously
Under test gas G1 in the 110c of chamber are discharged outside housing 110.
Although under test gas G1 are pumped into cavity 110c with first heating cavities 110c by above-described embodiment again
Example explanation；So in another embodiment it is also possible to first under test gas G1 are pumped in cavity 110c after, then
Control heater 160 and/or the second pin 112 heating cavities 110c.For the flow process of Fig. 2, can
Step S185 and S190 were executed before step S140.
In another embodiment, also can omit step S150, S155, S160, S165 and S170 of Fig. 2；
Under here design, whether the preparation that equally can learn gas sensing by the indication signal of step S180
Complete.
Fig. 7 illustrates the sectional view of the gas sensing device 200 according to another embodiment of the present invention.Gas is detectd
Survey device 200 and include housing 110, at least one gas detecting machine 120, the first valve 130, the second valve
140th, forced exhaust element 150, heater 160, filter element 170, controller 180, indicator
190 and trachea 20.
In the present embodiment, trachea 20 removably plug is located at the entrance 110a of housing 110；So,
When gas sensing will be carried out, can directly the trachea 20 of gas sensing device 200 be blown.By
In trachea 20 on housing 110, therefore alternative omission gas collection element 10.Additionally, crossing filtering element
Part 170 can make filter element 170 and trachea 20 jointly become a jettisonable unit in trachea 20
Part；Consequently, it is possible to after the completion of gas sensing, used filter element 170 and gas can be abandoned simultaneously
Pipe 20, so can avoid under test gas G1 residuing in filter element 170 negatively to affect next gas
The accuracy of detecting.
Summary, the gas sensing device of the embodiment of the present invention and the gas sensing method applying it, can
Detecting gas characteristic, such as gas ingredients.In one embodiment, the heater of gas sensing device can heat sky
Chamber, to shorten the time of gas sensing.In another embodiment, the heater of gas sensing device and
/ or forced exhaust element can either simultaneously or alternately operate, reach one with the signal accelerating gas detecting machine and stablize shape
State, and then lift gas detecting accuracy.Additionally, the first valve of gas sensing device and/or the second valve
Door can selectively turn on according to pumping, gas sensing and/or aerofluxuss waiting time or close, to assist gas
The pumping of detector, detecting and/or aerofluxuss.In another embodiment, can first under test gas be concentrated on
Gas element, treats that the gas sensing of gas sensing device is ready to complete that (signal as gas detecting machine reaches one
Stationary value) when, then gas collection element is connected with gas sensing device, to carry out gas sensing.Other
In embodiment, filter element and trachea can collectively constitute a jettisonable element, after the completion of gas sensing,
This jettisonable element can be abandoned, to avoid the under test gas remaining in filter element negatively to affect next time
Gas sensing accuracy.
Although disclosing the present invention in conjunction with preferred embodiment above, but it is not limited to the present invention.
Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention,
Can be used for a variety of modifications and variations.Therefore, protection scope of the present invention should claim institute to enclose
That defines is defined.
Claims (17)
1. a kind of gas sensing device, including：
Housing, has cavity, entrance and outlet；
Gas detecting machine, in this cavity；
First valve, selectively closes off or opens this entrance；
Second valve, selectively closes off or opens this outlet；And
Forced exhaust element, located at this outlet.
2. gas sensing device as claimed in claim 1, also includes：
Heater, in this cavity.
3. gas sensing device as claimed in claim 1, also includes：
Filter element, located at this entrance.
4. gas sensing device as claimed in claim 3, wherein this filter element are that a biofiltration is thin
Film.
5. gas sensing device as claimed in claim 1, also includes：
Gas collection element, in order to collect under test gas.
6. gas sensing device as claimed in claim 5, also includes：
Trachea, is connected to an opening of this gas collection element；And
Retaining element, fixes this trachea and this gas collection element.
7. gas sensing device as claimed in claim 6, also includes：
Filter element, located at this tracheal strips.
8. gas sensing device as claimed in claim 2, also includes：
Controller, in order to operate：
According to a signal of this gas detecting machine control this heater and this forced exhaust element at least one
Running.
9. gas sensing device as claimed in claim 8, wherein this controller is also in order to operate：
Whether this signal judging this gas detecting machine is higher than a higher limit；
If this signal of this gas detecting machine is higher than this higher limit, this forced exhaust element is controlled to operate, with
Reduce a temperature of this cavity；
Judge whether this signal of this gas detecting machine is less than a lower limit；And
If this signal of this gas detecting machine is less than this lower limit, this heater is controlled to raise being somebody's turn to do of this cavity
Temperature.
10. gas sensing device as claimed in claim 9, wherein this controller is also in order to operate：
Judge whether this signal of this gas detecting machine is exceeded with the time of this lower limit positioned at this higher limit
One Preset Time is interval；And
If this signal of this gas detecting machine exceedes this positioned at the time of this higher limit and this lower limit presetting
Time interval, sends an indication signal.
11. gas sensing devices as claimed in claim 1, also include:
Controller, in order to operate：
Control this forced exhaust element that one under test gas are pumped in this cavity.
A kind of 12. gas sensing methods, including：
One gas sensing device is provided, wherein this gas sensing device include housing, gas detecting machine,
One valve, the second valve and forced exhaust element, wherein this housing have cavity, entrance and outlet, should
In this cavity, this first valve selectively turns on or closes this entrance gas detecting machine, and this second
Valve selectively turns on or closes this outlet, and this forced exhaust element is located at this outlet；
This forced exhaust element is by this cavity of this gas sensing device of under test gas inspiration；
Control this this entrance of the first valve closing；
Control this this outlet of the second valve closing；And
This gas detecting machine detects this under test gas.
13. gas sensing methods as claimed in claim 12, also include：
Heat this cavity.
14. gas sensing methods as claimed in claim 12, wherein this gas sensing device also include adding
Hot device；This gas sensing method also includes：
According to a signal of this gas detecting machine control this heater and this forced exhaust element at least one
Running.
15. gas sensing methods as claimed in claim 14, wherein according to this letter of this gas detecting machine
The step number controlling at least one running of this heater and this forced exhaust element includes：
Whether the signal judging this gas detecting machine is higher than a higher limit；
If this signal of this gas detecting machine is higher than this higher limit, this forced exhaust element is controlled to reduce this sky
One temperature in chamber；
Judge whether this signal of this gas detecting machine is less than a lower limit；And
If this signal of this gas detecting machine is less than this lower limit, this heater is controlled to raise being somebody's turn to do of this cavity
Temperature.
16. gas sensing methods as claimed in claim 15, wherein foundation
Judge whether this signal of this gas detecting machine is exceeded with the time of this lower limit positioned at this higher limit
One Preset Time is interval；And
If this signal of this gas detecting machine exceedes this positioned at the time of this higher limit and this lower limit presetting
Time interval, sends an indication signal.
17. gas sensing methods as claimed in claim 12, also include：
Control this forced exhaust element that one under test gas are pumped in this cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475941.5A CN106442640A (en) | 2015-08-06 | 2015-08-06 | Gas detection apparatus and gas detection method using gas detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475941.5A CN106442640A (en) | 2015-08-06 | 2015-08-06 | Gas detection apparatus and gas detection method using gas detection apparatus |
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| CN106442640A true CN106442640A (en) | 2017-02-22 |
Family
ID=58092657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510475941.5A Pending CN106442640A (en) | 2015-08-06 | 2015-08-06 | Gas detection apparatus and gas detection method using gas detection apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107121529A (en) * | 2017-05-19 | 2017-09-01 | 芜湖普唯特智能装备有限公司 | A kind of gas sensing device |
| CN107132316A (en) * | 2017-05-19 | 2017-09-05 | 芜湖普唯特智能装备有限公司 | A kind of gas sensing equipment |
| CN110702744A (en) * | 2019-10-17 | 2020-01-17 | 山东交通学院 | Special treatment device and sensing system for ship tail gas |
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| CN110702744B (en) * | 2019-10-17 | 2020-06-19 | 山东交通学院 | Special treatment device and sensing system for ship tail gas |
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Application publication date: 20170222 |
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