CN209280566U - A kind of dry air formaldehyde in-situs tester - Google Patents
A kind of dry air formaldehyde in-situs tester Download PDFInfo
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- CN209280566U CN209280566U CN201822195665.9U CN201822195665U CN209280566U CN 209280566 U CN209280566 U CN 209280566U CN 201822195665 U CN201822195665 U CN 201822195665U CN 209280566 U CN209280566 U CN 209280566U
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Abstract
The utility model relates to a kind of methylene oxide detecting instrument, in particular to a kind of dry air formaldehyde in-situs tester.Its structure includes casing, Test paper entrance is provided with above casing, gas sampling entrance and liquid crystal display, the cabinet sides setting fan and power supply/charger plug, liquid crystal display, fan and the power supply/charger plug is electrically connected the microprocessor being set in casing, the Test paper entrance and gas sampling entrance is respectively communicated with the detection module being set in casing, the detection module electrical connection microprocessor, the gas sampling entrance detection module described by the gas samping pump connection being set in casing.A kind of dry air formaldehyde in-situs tester of the utility model can carry out formaldehyde test, simple, quick, precision height to room air using the dry test paper to be measured made.
Description
Technical field
The utility model relates to a kind of methylene oxide detecting instrument, in particular to a kind of dry air formaldehyde in-situs tester.
Background technique
Under the prior art, dry type chemical analysis technology is a kind of chemical analysis method of maturation, is mainly used in faces at present
In bed urine examination, its advantages are to have subtracted the dosage of liquid reagent, and detection speed is fast, accuracy is high.
It is well known that the formaldehyde contained in room air is harmful to the body of people.Present examination criteria uses
Be GB/T18204.2-2014 " public places sanitary method of inspection part 2: chemical pollutant ", the detection reagent of the inside is matched
Set it is cumbersome, it is not easy to maintain, be unfavorable for on-site test.Therefore, urgent need is a kind of in the market uses easy high-precision Interior Space
The field quick detection instrument of gas formaldehyde is come the needs of meeting everybody.
Summary of the invention
In order to solve problems in the prior art, the utility model provides a kind of dry air formaldehyde in-situs tester,
Formaldehyde test, simple, quick, precision height can be carried out to room air using the dry test paper to be measured made.
Technical solution used by the utility model is as follows:
A kind of dry air formaldehyde in-situs tester, including casing, the casing top are provided with Test paper entrance, gas
Sampler body entrance and liquid crystal display, cabinet sides setting fan and power supply/charger plug, the liquid crystal display, fan and
Power supply/charger plug is electrically connected the microprocessor being set in casing, the Test paper entrance and gas sampling
Entrance is respectively communicated with the detection module being set in casing, and the detection module electrical connection microprocessor is described
The gas sampling entrance detection module described by the gas samping pump connection being set in casing.
Detection module includes module body, and gas samping pump inlet channel, gas are respectively arranged in the module body
Sampler body pumps outlet passageway, incident light source channel, reflection source channel and transmitted light source channel, the gas samping pump air inlet
Channel is connected to the gas samping pump, and LED light tube is provided in the incident light source channel, and the reflection source is logical
It is provided with retroreflective photoelectric sensor in road, transmission photoelectric sensor, the gas are provided in the transmitted light source channel
Sampling pump, LED light tube, retroreflective photoelectric sensor and transmission photoelectric sensor are electrically connected the microprocessor, described
Module body in be additionally provided with Test paper channel for being inserted into Test paper, connection outside the Test paper channel
The Test paper entrance, the Test paper channel interior connection gas samping pump inlet channel, gas are adopted
Sample pumps outlet passageway, incident light source channel, reflection source channel and transmitted light source channel, and the gas samping pump air inlet is logical
Road, gas samping pump outlet passageway, incident light source channel, reflection source channel and transmitted light source channel are intersected in insertion detection examination
Test point on the Test paper in paper channel.
Microprocessor includes microprocessor unit, and the microprocessor unit is separately connected power supply unit, liquid crystal display
Unit, gas sampling pump unit, sensor unit, fan unit, incident light source unit, push-button unit and RS232 interface,
In, it is 8 single-chip microcontrollers that microprocessor in the microprocessor unit, which is STC89C60, internal storage 64K, described
The power supply that 8.4V lithium battery provides is converted into the 5V power supply of integrated circuit needs by power supply unit；The push-button unit includes
Switch key pin and the bonded foot of measurement, pass through the microprocessor unit and control, and realize that function is arranged in key；The liquid
Brilliant display unit realizes display function under the action of microprocessor unit；The gas sampling pump unit, provides to be detected
Gas；It is controlled by the microprocessor unit；The incident light source unit provides light source for detection, is controlled by micro- place
Manage device unit；In sensor unit, S1133 is photoelectric sensor；It can receive photosignal and be transferred to micro- place
Device unit is managed, the RS232 interface is communication interface, is microprocessor and extraneous contact channel.
The dry air formaldehyde in-situs tester of the utility model, including casing, be placed in chassis sidewall fan and power supply/
Charger plug.Wherein, fan be in order to make casing internal air quickly circulate, this can in order to gas samping pump work when produce
The sample gas of raw heat and discharge quickly sheds, and it is more steady to be conducive to air pump flow.Power supply/charger plug can be
Internal lithium battery charging, can also be used as external power supply and directly uses.It is placed in the Liquid Crystal Module of casing front surface, in microprocessor
Under the action of work.Wherein, there is display: detection time (countdown 20min), testing result (mg/m3) function in liquid crystal display.
The multiple keys for being placed in casing front surface include: ON/OFF, measurement key.By the operation to key, detection process arrangement is completed.
Gas sampling unit in measuring unit contains gas samping pump and gas sampling channel.Gas sampling channel is intersected in gas and adopts
At sample unit Test paper.Wherein, gas sampling pump discharge is 0-3.0L/min, can be reconciled under the action of microprocessor.Gas
The air sample of sampler body pump acquisition enters measuring unit by gas sampling entrance and is purged on Test paper.Gas sampling enters
Mouth, gas samping pump and gas sampling channel are connected using silicone rubber tube.Test paper is according to dry type chemical analysis technology by state
Formaldehyde testing reagent in mark GB/T18204.2-2014 is prepared into dry type test paper, and reaction principle when sampling operation follows bright
Rich-Beer law.Test paper, transparent plastic or transparent glass can be used in Test paper substrate.Carrying out content of formaldehyde detection
When, sample gas is purged on Test paper, and a part of detection light is absorbed and in a linear relationship with content of formaldehyde, at this point, light
Received photosignal is passed to microprocessor post-processing by electric transducer, it can obtains formaldehyde in air content to be detected.
Reflector element contains incident light source channel and reflection source channel, and two incident light source channels are intersected in gas at an angle and adopt
At sample unit Test paper.Reflection source channel is located on the center line in two incident light source channels.When using reflection method for measuring
When, incident light source is irradiated to the reflected light formed after Test paper and enters reflection source channel.Contain highlighted in incident light source channel
LED light tube is spent as incident light source, and retroreflective photoelectric sensor is contained to receive detection signal in reflection source channel top.Using
Reflection method for measuring can detect high-content formaldehyde in room air.Transmission units contain transmitted light source channel, with reflection
Light source channel is located on same axis, and when using transmission measurement, incident light source is irradiated to after Test paper through detection examination
Paper enters transmitted light source channel, is irradiated to the transmission photoelectric sensor on top to receive detection signal.It can using transmission measurement
To be detected to low content formaldehyde in room air.Testing result is shown on Liquid Crystal Module.
Due to existing spectrochemical analysis technical reason, reflection method for measuring range are as follows: between 0.01-3.00mg/m3, thoroughly
Penetrate method measurement range are as follows: between 0.005-0.500mg/m3.Two methods cooperate available optimum detection effect.
The utility model can carry out field quick detection to formaldehyde in indoor air.
Technical solution provided by the utility model has the benefit that
1, dry type test paper is prepared into using dry type chemical analysis technology, it can be to avoid cumbersome reagent pretreatment process, just
In realization field quick detection demand.
2, using reflection method for measuring method, high-content formaldehyde in room air can be detected.
3, using transmission measurement method, low content formaldehyde in room air can be detected.
4, using Liquid Crystal Module display methods, man-machine interactive is easy for operation.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of external structure schematic diagram of dry air formaldehyde in-situs tester of the utility model；
Fig. 2 is a kind of detection module structural schematic diagram of dry air formaldehyde in-situs tester of the utility model；
Fig. 3 is a kind of Test paper structural schematic diagram of dry air formaldehyde in-situs tester of the utility model；
Fig. 4 is a kind of circuit diagram of dry air formaldehyde in-situs tester of the utility model.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Embodiment one
As shown in Fig. 1, a kind of dry air formaldehyde in-situs tester, including casing 1 are provided with above the casing 1
Test paper entrance 2, gas sampling entrance 3 and liquid crystal display 4,1 side of the casing setting fan 5 and power supply/charger plug
6, the liquid crystal display 4, fan 5 and power supply/charger plug 6 are electrically connected the microprocessor being set in casing 1, described
Test paper entrance 2 and gas sampling entrance 3 be respectively communicated with the detection module being set in casing 1, the detection module
The electrical connection microprocessor, the gas sampling entrance 3 pass through described in the gas samping pump connection that is set in casing 1
Detection module.
As shown in Fig. 2, the detection module of the present embodiment includes module body 7, is respectively set in the module body 7
There are gas samping pump inlet channel 8, gas samping pump outlet passageway 9, incident light source channel 10, reflection source channel 11 and transmission
Light source channel 12, the gas samping pump inlet channel 9 are connected to the gas samping pump, the incident light source channel 10
It is inside provided with LED light tube 13, retroreflective photoelectric sensor 14, the transmitted light are provided in the reflection source channel 11
Transmission photoelectric sensor 15, the gas samping pump, LED light tube 13, retroreflective photoelectric sensor are provided in source channels 12
14 are electrically connected the microprocessor with transmission photoelectric sensor 15, are additionally provided in the module body 7 for inserting
Enter the Test paper channel 16 of Test paper, the Test paper entrance 2, institute are connected to outside the Test paper channel 16
The gas samping pump inlet channel 8, gas samping pump outlet passageway 9, incidence are connected to inside the Test paper channel 16 stated
Light source channel 10, reflection source channel 11 and transmitted light source channel 12, the gas samping pump inlet channel 8, gas sampling
It is logical that pump outlet passageway 9, incident light source channel 10, reflection source channel 11 and transmitted light source channel 12 are intersected in insertion Test paper
Test point on the Test paper 17 in road 16.
As shown in Fig. 3, Test paper 17 includes main body 171, substrate card slot 172, beam orifice 173, substrate 174 and detection
Test paper test point 175.When in use, the test card after pre-treatment is put into substrate 174, only Test paper test point 175
It is uncovered.Then it puts it into substrate card slot 172.When doing gas detection, Test paper 17 is inserted into Test paper channel
In 16.17 material of Test paper can be test paper, transparent plastic or glass, be convenient for transmission measurement.171 main body of Test paper
Plastic material is generally used, is not particularly limited herein.
As shown in Fig. 4, the microprocessor of the present embodiment includes microprocessor unit A, and the microprocessor unit A points
It Lian Jie not power supply unit B, liquid crystal display C, gas samping pump cells D, sensor unit E, fan unit F, incident light source
Unit G, push-button unit H and RS232 interface, wherein the microprocessor in microprocessor unit A is STC89C60, is 8 monolithics
The power supply that 8.4V lithium battery provides is converted into the 5V power supply of integrated circuit needs by machine, internal storage 64K, power supply unit B；It presses
Key unit H includes switch key pin and measures bonded foot, is controlled by microprocessor unit A, realizes that function is arranged in key；Liquid
Brilliant display unit C realizes display function under the action of microprocessor unit A；Gas samping pump cells D provides gas to be detected
Body；It is controlled by microprocessor unit A；Incident light source unit G provides light source for detection, is controlled by microprocessor unit A；It is sensing
In device unit E, S1133 is photoelectric sensor；It can receive photosignal and be transferred to the microprocessor unit A, RS232
Interface is communication interface, is microprocessor and extraneous contact channel.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (3)
1. a kind of dry air formaldehyde in-situs tester, including casing, which is characterized in that be provided with detection examination above the casing
Paper entrance, gas sampling entrance and liquid crystal display, the cabinet sides setting fan and power supply/charger plug, the liquid crystal
Screen, fan and power supply/charger plug are electrically connected the microprocessor being set in casing, the Test paper entrance and
Gas sampling entrance is respectively communicated with the detection module being set in casing, the detection module electrical connection micro process
Device, the gas sampling entrance detection module described by the gas samping pump connection being set in casing.
2. a kind of dry air formaldehyde in-situs tester according to claim 1, which is characterized in that the detection module
Including module body, be respectively arranged in the module body gas samping pump inlet channel, gas samping pump outlet passageway,
Incident light source channel, reflection source channel and transmitted light source channel, the gas samping pump inlet channel connection gas
Sampler body pumps, and is provided with LED light tube in the incident light source channel, is provided with reflected light in the reflection source channel
Electric transducer, is provided with transmission photoelectric sensor in the transmitted light source channel, the gas samping pump, LED light tube,
Retroreflective photoelectric sensor and transmission photoelectric sensor are electrically connected the microprocessor, also set up in the module body
There is the Test paper channel for being inserted into Test paper, the connection Test paper enters outside the Test paper channel
Mouthful, the Test paper channel interior connection gas samping pump inlet channel, gas samping pump outlet passageway, incidence
Light source channel, reflection source channel and transmitted light source channel, the gas samping pump inlet channel, gas samping pump outlet are logical
Road, incident light source channel, reflection source channel and transmitted light source channel are intersected on the Test paper in insertion Test paper channel
Test point.
3. a kind of dry air formaldehyde in-situs tester according to claim 1, which is characterized in that the microprocessor
Including microprocessor unit, the microprocessor unit is separately connected power supply unit, liquid crystal display, gas samping pump list
Member, sensor unit, fan unit, incident light source unit, push-button unit and RS232 interface, wherein the microprocessor list
Microprocessor in member is STC89C60, is 8 single-chip microcontrollers, internal storage 64K, and the power supply unit is by 8.4V lithium battery
The power supply of offer is converted into the 5V power supply of integrated circuit needs；The push-button unit includes switch key pin and measures bonded
Foot is controlled by the microprocessor unit, realizes that function is arranged in key；The liquid crystal display is in microprocessor list
Under the action of member, display function is realized；The gas sampling pump unit, provides gas to be detected；It is controlled by micro- place
Manage device unit；The incident light source unit provides light source for detection, is controlled by the microprocessor unit；In sensor unit
In, S1133 is photoelectric sensor；It can receive photosignal and be transferred to the microprocessor unit, the RS232 connects
Mouth is communication interface, is microprocessor and extraneous contact channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822195665.9U CN209280566U (en) | 2018-12-25 | 2018-12-25 | A kind of dry air formaldehyde in-situs tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822195665.9U CN209280566U (en) | 2018-12-25 | 2018-12-25 | A kind of dry air formaldehyde in-situs tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209280566U true CN209280566U (en) | 2019-08-20 |
Family
ID=67607340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822195665.9U Expired - Fee Related CN209280566U (en) | 2018-12-25 | 2018-12-25 | A kind of dry air formaldehyde in-situs tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209280566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487723A (en) * | 2019-08-26 | 2019-11-22 | 长春美泰仪器有限公司 | A kind of multidimensional integration spectrum detection cell device |
-
2018
- 2018-12-25 CN CN201822195665.9U patent/CN209280566U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487723A (en) * | 2019-08-26 | 2019-11-22 | 长春美泰仪器有限公司 | A kind of multidimensional integration spectrum detection cell device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190820 Termination date: 20211225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |