CN206710363U - A kind of high-precision oxygen sensor - Google Patents
A kind of high-precision oxygen sensor Download PDFInfo
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- CN206710363U CN206710363U CN201720126142.1U CN201720126142U CN206710363U CN 206710363 U CN206710363 U CN 206710363U CN 201720126142 U CN201720126142 U CN 201720126142U CN 206710363 U CN206710363 U CN 206710363U
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- module
- housing
- electrolyte
- oxygen sensor
- microprocessor
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Abstract
The utility model discloses a kind of high-precision oxygen sensor, including a housing, a tank house is provided with the housing, electrolyte is packaged with the tank house, some air inlets are offered on the housing, the air inlet connects with electrolyte, filter is additionally provided with above the air inlet, the electrolyte is also connected with a detection module, the detection module passes sequentially through amplification module, AD conversion module and rectification filtering module and is connected with a microprocessor, and the microprocessor is connected with the power module of an offer power supply.On the one hand the cross jamming of mixed gas is prevented by filter filtering, the noise in circuit is on the other hand removed by amplification module, AD conversion module and rectification filtering module, the precision of oxygen detection can be effectively improved.
Description
Technical field
It the utility model is related to field of gas detection, more particularly to a kind of high-precision oxygen sensor.
Background technology
PM2.5, refer to the particulate matter that aerodynamics equivalent diameter in surrounding air is less than or equal to 2.5 microns, when can be longer
Between be suspended in air, content concn is higher in atmosphere for it, and it is more serious just to represent air pollution.In recent years, haze problem day
Benefit highlights, and causes more and more people to begin to focus on composition of air, and as the important channel for understanding composition of air, gas detection neck
Domain is also more and more widely using in daily life.In the prior art, it is not high enough to there is precision during oxygen detection
Problem, and cause this problem mainly to have both sides reason, when the cross jamming of mixed gas, second, the mistake of detection circuit
Difference is excessive.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of high-precision oxygen sensor, can
Greatly improve oxygen detection precision.
Technical scheme is used by the utility model solves its technical problem：A kind of high-precision oxygen sensor, including
One housing, a tank house is provided with the housing, electrolyte is packaged with the tank house, is offered on the housing some
Air inlet, the air inlet connect with electrolyte, are additionally provided with filter above the air inlet, and the electrolyte is also with one
Detection module is connected, and the detection module passes sequentially through amplification module, AD conversion module and rectification filtering module and a microprocessor
Device is connected, and the microprocessor is connected with the power module of an offer power supply.
Further, the microprocessor is also connected by a communication module with intelligent terminal.
Further, the microprocessor is also associated with an alarm module, and the output end of the alarm module is connected with LED
And alarming horn, the LED and alarming horn are arranged on the outside of housing.
Further, the housing includes upper lid and the bottom being detachably connected.
Further, the filter includes the active carbon plate of absorbable interference gas or is coated with chemically reactive layer
Web plate.
Further, the electrolyte is placed in tank house by a bag film.
Further, the side of the housing is provided with the fluid guidance port of connection electrolyte, is additionally provided with the fluid guidance port close
Sealing switch.
The beneficial effects of the utility model have：On the one hand the cross jamming of mixed gas is prevented by filter filtering, separately
On the one hand the noise in circuit is removed by amplification module, AD conversion module and rectification filtering module, oxygen can be effectively improved
The precision of detection.
Brief description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail, wherein：
Fig. 1 is module diagram of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 1 is module diagram of the present utility model.A kind of high-precision oxygen sensor, including a housing,
A tank house is provided with the housing, electrolyte is packaged with the tank house, some air inlets are offered on the housing,
The air inlet is connected with electrolyte, and filter is additionally provided with above the air inlet, and the electrolyte also detects mould with one
Block 1 is connected, and the detection module 1 passes sequentially through amplification module 2, AD conversion module 3 and the microprocessor of rectification filtering module 4 and one
5 are connected, and the microprocessor 5 is connected with the power module 6 of an offer power supply.The Shang Gai that housing includes being detachably connected is with
Portion.
The microprocessor 5 is also connected by a communication module 7 with intelligent terminal 8.When microprocessor 5 passes through detection module
1 when detecting that oxygen content is exceeded, and microprocessor 5 is further communicated by communication module 7 with intelligent terminal 8, exceeded information
Upload on intelligent terminal 8, user can receive exceeded information immediately.The intelligent terminal 8 can be mobile phone, versatile.
In addition, when microprocessor 5 detects that oxygen content is exceeded by detection module 1, this sensor can also be made in time
Go out reaction：Microprocessor 5 is connected with an alarm module 9, and the output end of the alarm module 9 is connected with LED and alarming horn,
The LED and alarming horn are arranged on the outside of housing.When oxygen content is exceeded, microprocessor 5 is driven by alarm module 9
Dynamic LED and alarming horn work, give a warning light and warning, in time personnel near notice.
The filter includes the active carbon plate of absorbable interference gas or is coated with the web plate of chemically reactive layer.
Filter is filtered using two kinds of methods to interference gas simultaneously, first, filter is using filter plate made of activated carbon, it is living
Property carbon can not absorb oxygen and can absorb most interference gas；Another method is that filter is to be coated with conversion zone
Web plate, and conversion zone can chemically react with main interference gas, so as to greatly reduce interference gas content, improve oxygen
Gas accuracy of detection.The filtering of above two structure can be superimposed use.
The electrolyte is placed in tank house by a bag film, and the side of the housing is provided with connection electrolyte
Fluid guidance port, enclosed switch is additionally provided with the fluid guidance port.After electrolyte fails, enclosed switch can be opened, passes through drain
Mouth changes electrolyte, extends the service life of this sensor.
During oxygen detection is carried out, can often there is the interference gas of certain content in mixed gas, it is to oxygen
The detection of gas easily forms cross jamming, reduces accuracy of detection.And in this sensor, extraneous mixed gas is entered by air inlet
Filter is passed through afterwards, filter can effectively filter the interference gas in most of mixed gas, and in remaining mixed gas
Electrochemical reaction then occurs with the electrolyte in tank house and produces electrical potential difference for oxygen, and then can be measured by detection module 1
Oxygen concentration in electrical potential difference detection mixed gas.Specifically, electrolyte is sylvite, and sensing electrode is noble metal, and anode is lead
When reaching sensing electrode electrochemical reaction occurs for block etc., oxygen：O2+H2O+4e- → 4OH-, and OH- is transferred to via electrolyte
Anode, and electrochemical reaction occurs with anode：2Pb+4OH- → 2PbO+2H2O+4e-, potential is formed between such cathode anode
Difference, so as to detect oxygen concentration in mixed gas by detecting electrical potential difference can.
On the other hand, there is certain noise in the electric signal that detection module 1 collects, if unprocessed will substantially reduce
The precision of oxygen detection.Therefore, the noise in circuit is removed by amplification module 2, AD conversion module 3 and rectification filtering module 4,
The precision of oxygen detection can be effectively improved.
It is described above, simply better embodiment of the present utility model, but the utility model is not limited to above-mentioned reality
Example is applied, as long as it reaches technique effect of the present utility model with any same or similar means, should all belong to of the present utility model
Protection domain.
Claims (6)
- A kind of 1. high-precision oxygen sensor, it is characterised in that：Including a housing, a tank house, institute are provided with the housing State and electrolyte is packaged with tank house, some air inlets are offered on the housing, the air inlet connects with electrolyte, described Filter is additionally provided with above air inlet, the electrolyte is also connected with a detection module (1), the detection module (1) according to It is secondary to be connected by amplification module (2), AD conversion module (3) and rectification filtering module (4) with a microprocessor (5), micro- place Reason device (5) is connected with the power module (6) of an offer power supply；The microprocessor (5) also passes through a communication module (7) and intelligence Terminal (8) is connected.
- A kind of 2. high-precision oxygen sensor according to claim 1, it is characterised in that：The microprocessor (5) also connects An alarm module (9) is connected to, the output end of the alarm module (9) is connected with LED and alarming horn, the LED and report Alert loudspeaker are arranged on the outside of housing.
- A kind of 3. high-precision oxygen sensor according to claim 1, it is characterised in that：The housing includes detachably connecting The upper lid connect and bottom.
- A kind of 4. high-precision oxygen sensor according to claim 1, it is characterised in that：The filter includes absorbable Disturb the active carbon plate of gas or be coated with the web plate of chemically reactive layer.
- A kind of 5. high-precision oxygen sensor according to claim 1, it is characterised in that：The electrolyte passes through a film Bag is placed in tank house.
- A kind of 6. high-precision oxygen sensor according to claim 1, it is characterised in that：The side of the housing is provided with The fluid guidance port of electrolyte is connected, enclosed switch is additionally provided with the fluid guidance port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720126142.1U CN206710363U (en) | 2017-02-10 | 2017-02-10 | A kind of high-precision oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720126142.1U CN206710363U (en) | 2017-02-10 | 2017-02-10 | A kind of high-precision oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206710363U true CN206710363U (en) | 2017-12-05 |
Family
ID=60472914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720126142.1U Active CN206710363U (en) | 2017-02-10 | 2017-02-10 | A kind of high-precision oxygen sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206710363U (en) |
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2017
- 2017-02-10 CN CN201720126142.1U patent/CN206710363U/en active Active
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