CN202230051U - Hand-held formaldehyde detector - Google Patents
Hand-held formaldehyde detector Download PDFInfo
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- CN202230051U CN202230051U CN2011203785231U CN201120378523U CN202230051U CN 202230051 U CN202230051 U CN 202230051U CN 2011203785231 U CN2011203785231 U CN 2011203785231U CN 201120378523 U CN201120378523 U CN 201120378523U CN 202230051 U CN202230051 U CN 202230051U
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- control circuit
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000004891 communication Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 235000019256 formaldehyde Nutrition 0.000 claims description 27
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 229910003307 Ni-Cd Inorganic materials 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000006673 asthma Diseases 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 208000032839 leukemia Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a hand-held formaldehyde detector, which comprises a shell, wherein the shell is provided with an air inlet, a sensor, a display screen and a power switch, a power supply and a control circuit are arranged in the shell, the sensor, the display screen, the power switch and the control circuit are electrically connected with the power supply, and the control circuit comprises a microprocessor, an amplifying circuit, an I/V conversion circuit, an A/D conversion circuit and a ZigBee communication module which are electrically connected; the sensor adopts an electrochemical sensor, and has the advantages of stable performance, good linearity, short polarization time, strong anti-interference capability and long service life; the detector can automatically display the detected formaldehyde concentration value on a screen in real time, and the reading is accurate and the reaction is sensitive; the detector is embedded with a ZigBee wireless communication module, so that wireless network control and communication can be realized, and real-time transmission and sharing with a local area network can be realized; when the concentration of formaldehyde in the air exceeds the threshold value, the detector can send out an alarm by utilizing a built-in alarm circuit, and prompts an operator to perform corresponding safe operation in time.
Description
Technical field
The utility model relates to a kind of methylene oxide detecting instrument, belongs to electronic technology field.
Background technology
Formaldehyde is a kind of colourless gas with high volatile volatile and intense stimulus property smell, also is a kind of potential carcinogen, and health is had bigger harm, and bringing out like asthma, leukaemia etc. of numerous disease is all relevant with formaldehyde.The World Health Organization (WHO) and USEPA (EPA) all classify them as potential danger carcinogenic substance and important environmental contaminants.Along with various novel building materialss, the utilization of decorating and renovating material, cause the indoor environmental pollution problem serious day by day in recent years, content of formaldehyde is excessive in the especially various materials, directly is detrimental to health.Concentration of formaldehyde reaches 0.06-0.07mg/m in every cubic metres of air
3The time, slight asthma will take place in children; When formaldehyde in indoor air content is 0.1mg/m
3The time, peculiar smell and sense of discomfort are just arranged; Reach 0.5mg/m
3The time, can stimulate eyes to cause and shed tears.
At present, in the conventional formaldehyde on-the-spot test method, AAS is limit by operating conditionss such as the water-bath or the concentrated sulphuric acid, and chromatography is limit by instrument and equipment.The raising day by day of Along with people's living standard, people need a kind of simple, sensitive, hand-held methylene oxide detecting instrument fast and accurately.
The utility model content
The problem that the utility model will solve is to above deficiency, provide a kind of highly sensitive, measuring speed is fast, uses simple hand-held methylene oxide detecting instrument.
For overcoming the above problems; The utility model adopts following technical scheme: the hand-held methylene oxide detecting instrument; Comprise housing; It is characterized in that: housing is provided with air intake opening, sensor, display screen and power switch, is provided with power supply and control circuit in the housing, and sensor, display screen, power switch, control circuit are electrically connected with power supply.
Further improvement as technique scheme:
Said control circuit comprises microprocessor, amplifying circuit, I/V change-over circuit, A/D change-over circuit and the ZigBee communication module of electrical connection;
Amplifying circuit is connected with sensor, is used for current signal that sensor is surveyed is amplified;
The I/V change-over circuit is connected with amplifying circuit, is used for converting the current signal after amplifying into voltage signal;
The A/D change-over circuit is connected with the I/V change-over circuit, is used for converting analog voltage signal into digital voltage signal;
Microprocessor is connected with the A/D change-over circuit, and the reception digital voltage signal is also handled, and exports the gas concentration value information after handling to display screen and ZigBee communication module;
The ZigBee communication module is connected with microprocessor, is used for the gas concentration value information is carried out wireless transmission.
Said control circuit comprises warning circuit, and warning circuit is connected with microprocessor.
Be provided with fan in the said housing, fan is electrically connected with power switch, power supply.
Said power supply is a rechargeable battery, and rechargeable battery is through power switch wind-receiving fan and mu balanced circuit, and mu balanced circuit is that sensor, display screen and control circuit provide working power.
Said sensor is an electrochemical sensor.
After the utility model adopts above technical scheme, compared with prior art, have the following advantages: adopt Ni-Cd nickel-cadmium, in light weight, improved the energy saving and the portability of product; Sensor adopts electrochemical sensor, the advantage that have stable performance, the linearity is good, the polarization time is short, antijamming capability is strong, the life-span is long; Detector can be presented at detected concentration of formaldehyde value on the screen automatically in real time, reading precisely, be quick on the draw; The embedded ZigBee wireless communication module of detector can be realized wireless network control and communication, can realize real-time Transmission and share with LAN; When air formaldehyde concentration surpassed threshold value, detector can utilize its built-in warning circuit to give the alarm, and alert is in time carried out corresponding safe operation.
Multi-functional hand-held formula methylene oxide detecting instrument can be applicable to new household; Content of formaldehyde in the room air is monitored in real time, is reported to the police and shows; The content of formaldehyde that also can be applicable to industry and enterprises such as petrochemical industry, coal, mine, subsurface investigation detects, and has higher using value and dissemination.
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
Description of drawings
Accompanying drawing 1 is the structural representation of hand-held methylene oxide detecting instrument among the utility model embodiment;
Accompanying drawing 2 is circuit block diagrams of hand-held methylene oxide detecting instrument among the utility model embodiment;
Among the figure,
1-housing, 2-air intake opening, 3-sensor, 4-display screen, 5-power switch, the 6-socket that charges, 7-fan, 8-rechargeable battery.
Embodiment
Embodiment, like Fig. 1, shown in Figure 2, the hand-held methylene oxide detecting instrument; Comprise housing 1; Housing 1 is provided with air intake opening 2, sensor 3, display screen 4, power switch 5 and charging socket 6, is provided with power supply, fan 7 and control circuit in the housing 1, is provided with fan 7 in the housing 1; Make detected gas inside and outside detector, form a gas circulation; The balanced gas density of gas makes its measurement data more true and reliable, and sensor 3, display screen 4, power switch 5, fan 7 and control circuit are electrically connected with power supply;
Control circuit comprises microprocessor, amplifying circuit, I/V change-over circuit, A/D change-over circuit, warning circuit and the ZigBee communication module of electrical connection;
Amplifying circuit is connected with sensor 3, is used for sensor 3 current signal of surveying is amplified;
The I/V change-over circuit is connected with amplifying circuit, is used for converting the current signal after amplifying into voltage signal;
The A/D change-over circuit is connected with the I/V change-over circuit, is used for converting analog voltage signal into digital voltage signal;
Microprocessor, the reception digital voltage signal is also handled, and exports the gas concentration value information after handling to display screen and ZigBee communication module;
Warning circuit is connected with microprocessor, when gas concentration value surpasses threshold value, gives the alarm;
The ZigBee communication module is used for the gas concentration value information is carried out wireless transmission.
Power supply is a rechargeable battery 8, and rechargeable battery 8 is through power switch 5 wind-receiving fan 7 and mu balanced circuits, and mu balanced circuit is that sensor 3, display screen 4 and control circuit provide working power.Charge through 6 pairs of rechargeable batteries 8 of charging socket.
Microprocessor adopts the Mega8L single-chip microcomputer, and display screen 4 adopts the OMC12964-9 dot lcd to show, can realize data acquisition and demonstration more accurately; Power supply has been abandoned the power supply mode of the AC220V that existing product used on the market, power 5*2.5W; Adopt Ni-Cd nickel-cadmium; With the WV mode of DC 5V, power 0.5W, weight is relieved to 300-500g by common 1.5kg, has improved the energy saving and the portability of product; Sensor 3 adopts electrochemical sensor, and electrochemical sensor adopts CONTROLLED POTENTIAL electrolytic process principle, and its structure is in electrolytic cell, to settle three electrodes; Be working electrode, to electrode and contrast electrode, and impose certain polarizing voltage, separate with the external world with film; This film of tested gas permeation that gets into from air intake opening 2 arrives working electrode; Redox reaction takes place, and electrochemical sensor will have an output current this moment, and this electric current and tested gas concentration are proportional.
Embedded ZigBee wireless communication module makes the detection data realize real-time Transmission and to share that the habitual data line transmission mode of like product has had bigger improvement relatively, has possessed stronger expanded function and communication function with LAN.
When air formaldehyde concentration surpassed threshold value, detector can utilize its built-in warning circuit to give the alarm, and alert is in time carried out corresponding safe operation.
The sensing element that the hand-held methylene oxide detecting instrument adopts is present popular in the world electrochemical sensor, has plurality of advantages such as stable performance, the linearity is good, the polarization time is short, antijamming capability is strong, the life-span is long.
Near method of application: operate in strict accordance with prompting, select to detect per 10～15m the poisonous gas leakage point
2Should detect at least once, will consider factors such as room ventilation and house inner structure simultaneously.
Points for attention:
(1) power supply that uses of detector is four joint Ni-Cd nickel-cadmiums, time spent not for a long time, every at a distance from the first quarter moon charging once.
(2) the sensor probe is wanted periodic cleaning, otherwise dust impurity stops up air intake opening transducer sensitivity is descended.
(3) user does not dismantle the inner components and parts of detector voluntarily, especially notes not making it produce strenuous vibration.
(4) forbid detector is placed on the inflammable gas gathering and has hazardous area.
Claims (6)
1. hand-held methylene oxide detecting instrument; Comprise housing (1); It is characterized in that: housing (1) is provided with air intake opening (2), sensor (3), display screen (4) and power switch (5); Housing is provided with power supply and control circuit in (1), and sensor (3), display screen (4), power switch (5), control circuit are electrically connected with power supply.
2. hand-held methylene oxide detecting instrument as claimed in claim 1 is characterized in that: said control circuit comprises microprocessor, amplifying circuit, I/V change-over circuit, A/D change-over circuit and the ZigBee communication module of electrical connection;
Amplifying circuit is connected with sensor (3), is used for sensor (3) current signal of surveying is amplified;
The I/V change-over circuit is connected with amplifying circuit, is used for converting the current signal after amplifying into voltage signal;
The A/D change-over circuit is connected with the I/V change-over circuit, is used for converting analog voltage signal into digital voltage signal;
Microprocessor is connected with the A/D change-over circuit, and the reception digital voltage signal is also handled, and exports the gas concentration value information after handling to display screen and ZigBee communication module;
The ZigBee communication module is connected with microprocessor, is used for the gas concentration value information is carried out wireless transmission.
3. hand-held methylene oxide detecting instrument as claimed in claim 2 is characterized in that: said control circuit comprises warning circuit, and warning circuit is connected with microprocessor.
4. hand-held methylene oxide detecting instrument as claimed in claim 3 is characterized in that: be provided with fan (7) in the said housing (1), fan (7) is electrically connected with power switch (5), power supply.
5. hand-held methylene oxide detecting instrument as claimed in claim 4; It is characterized in that: said power supply is rechargeable battery (8); Rechargeable battery (8) is through power switch (5) wind-receiving fan (7) and mu balanced circuit, and mu balanced circuit is that sensor (3), display screen (4) and control circuit provide working power.
6. like one of them described hand-held methylene oxide detecting instrument of claim 1-5, it is characterized in that: said sensor (3) is an electrochemical sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203785231U CN202230051U (en) | 2011-09-28 | 2011-09-28 | Hand-held formaldehyde detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203785231U CN202230051U (en) | 2011-09-28 | 2011-09-28 | Hand-held formaldehyde detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230051U true CN202230051U (en) | 2012-05-23 |
Family
ID=46080635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203785231U Expired - Fee Related CN202230051U (en) | 2011-09-28 | 2011-09-28 | Hand-held formaldehyde detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230051U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336038A (en) * | 2013-06-03 | 2013-10-02 | 陆和平 | Portable formaldehyde detection instrument |
| CN103344680A (en) * | 2013-06-18 | 2013-10-09 | 黄俊晶 | Formaldehyde monitor |
| CN103364462A (en) * | 2013-06-18 | 2013-10-23 | 毛雪斌 | Portable formaldehyde detector |
| CN104678057A (en) * | 2014-06-30 | 2015-06-03 | 深圳市睿海智电子科技有限公司 | Air quality monitoring method, and corresponding equipment and system |
| CN105866340A (en) * | 2016-05-05 | 2016-08-17 | 杨志恒 | Environment detector for flower cultivation |
| CN106805305A (en) * | 2015-11-30 | 2017-06-09 | 衡阳腾飞内衣有限公司 | A kind of concentration of formaldehyde detects underwear |
| CN107525830A (en) * | 2017-09-01 | 2017-12-29 | 深圳小气科技有限公司 | Air quality detector |
| CN107677770A (en) * | 2017-09-06 | 2018-02-09 | 安徽乐金环境科技有限公司 | Hand-held formaldehyde test device |
| CN107860105A (en) * | 2017-10-19 | 2018-03-30 | 广东美的制冷设备有限公司 | Sensor module and there is its air conditioner |
| CN114137243A (en) * | 2021-09-06 | 2022-03-04 | 深圳市赛纳威环境科技有限公司 | Data processing circuit and hand-held type formaldehyde detector |
-
2011
- 2011-09-28 CN CN2011203785231U patent/CN202230051U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336038A (en) * | 2013-06-03 | 2013-10-02 | 陆和平 | Portable formaldehyde detection instrument |
| CN103344680A (en) * | 2013-06-18 | 2013-10-09 | 黄俊晶 | Formaldehyde monitor |
| CN103364462A (en) * | 2013-06-18 | 2013-10-23 | 毛雪斌 | Portable formaldehyde detector |
| CN104678057A (en) * | 2014-06-30 | 2015-06-03 | 深圳市睿海智电子科技有限公司 | Air quality monitoring method, and corresponding equipment and system |
| CN106805305A (en) * | 2015-11-30 | 2017-06-09 | 衡阳腾飞内衣有限公司 | A kind of concentration of formaldehyde detects underwear |
| CN105866340A (en) * | 2016-05-05 | 2016-08-17 | 杨志恒 | Environment detector for flower cultivation |
| CN107525830A (en) * | 2017-09-01 | 2017-12-29 | 深圳小气科技有限公司 | Air quality detector |
| CN107677770A (en) * | 2017-09-06 | 2018-02-09 | 安徽乐金环境科技有限公司 | Hand-held formaldehyde test device |
| CN107860105A (en) * | 2017-10-19 | 2018-03-30 | 广东美的制冷设备有限公司 | Sensor module and there is its air conditioner |
| CN107860105B (en) * | 2017-10-19 | 2020-05-05 | 广东美的制冷设备有限公司 | Sensor module and air conditioner with same |
| CN114137243A (en) * | 2021-09-06 | 2022-03-04 | 深圳市赛纳威环境科技有限公司 | Data processing circuit and hand-held type formaldehyde detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |