CN104181318A - Online formaldehyde concentration detection device applicable to air purifier - Google Patents
Online formaldehyde concentration detection device applicable to air purifier Download PDFInfo
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- CN104181318A CN104181318A CN201410443047.5A CN201410443047A CN104181318A CN 104181318 A CN104181318 A CN 104181318A CN 201410443047 A CN201410443047 A CN 201410443047A CN 104181318 A CN104181318 A CN 104181318A
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- formaldehyde
- air purifier
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- online
- concentration
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Abstract
The invention relates to an online formaldehyde concentration detection device applicable to an air purifier, comprising a sensor used for detecting the concentration of formaldehyde in air, a conversion assembly used for current-voltage conversion, an ADC sampling assembly connected with the conversion assembly by a double-closed-loop amplifying circuit, and an MCU processing system, wherein the conversion assembly is connected with the sensor; after the ADC sampling assembly is arranged, an A/D analog-digital converter is arranged; the MCU processing system is connected with the A/D analog-digital converter by signals and comprises a processor, and the processor is connected with a display by an RS485 communication protocol. The online formaldehyde concentration device has the beneficial effects of being arranged at an optional required position in the body of the air purifier to detect the concentration content of the formaldehyde in clean air treated by the air purifier online in real time, being high in detection precision and strong in stability, being capable of transmitting the detected data to the display to be displayed in real time, and intuitively checking the real-time content of the formaldehyde.
Description
Technical field
The present invention relates to gas detection equipment technical field, more particularly, particularly a kind of online concentration of formaldehyde pick-up unit that is applicable to air purifier.
Background technology
Environmental pollution is at present serious, and haze weather is added, indoor because of finishing material, furniture, and release formaldehyde contaminated air environment is also tight
Heavily endanger health of people.The air purifier quality that is used for purifying the air of a room reaches desirable air ambient.Air purifier is of a great variety at present, and Detection of Air Quality is integrated, and clean-up effect all shows air comprehensive quality with color, is inconvenient to check the concrete content of formaldehyde.
Summary of the invention
In view of this, the invention provides a kind of online concentration of formaldehyde pick-up unit that is applicable to air purifier, to address the above problem.
For achieving the above object, the invention provides following technical scheme:
An online concentration of formaldehyde pick-up unit that is applicable to air purifier, comprising:
For detection of the sensor of air formaldehyde concentration;
For the transition components of current/voltage conversion, described transition components is connected with described sensor;
The ADC sampling component being connected with described transition components by two closed-loop amplifying circuits, the follow-up A/D analog to digital converter that is provided with of described ADC sampling component;
MCU disposal system, described MCU disposal system is connected with described A/D analog to digital converter signal, and described MCU disposal system includes processor, and described processor is connected with display by RS485 communication protocol.
Preferably, described pair of closed-loop amplifying circuit includes circuit board, and described A/D analog to digital converter and described transition components are welded on described circuit board.
In said structure design, variation faint Formaldehyde in Environment is changed into electrochemical signals by sensor, electrochemical signals is changed into voltage signal by transition components, after two closed-loop amplifying circuits amplify by being connected with A/D analog to digital converter, adopt two closed-loop amplifying circuits can effectively suppress the shake of sensor, increase the stability of sensor measurement, adopt two-stage amplifier, can, in the situation that not losing precision, signal be amplified to enough multiples and change into voltage signal.
In the present invention, software application Kalman filtering algorithm, further increase the precision and stability of sensor measurement, signal frequency conversion and A/D analog to digital converter with 4-20mA signal isolating converter convert voltage signal to digital signal, digital signal input MCU disposal system stores, filtering processing, processor adopting RS485 communication protocol shows digital data transmission to the display screen of air purifier, ensures the accuracy of data transmission.
Beneficial effect of the present invention is: online concentration of formaldehyde pick-up unit, can be loaded on needed optional position in air purifier body, the online concentration content that detects in real time formaldehyde in air purifier processing pure air, accuracy of detection is high, stability is strong, and the data transmission detecting is shown in real time to display device, can check intuitively the real-time content of formaldehyde.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation that is applicable to the online concentration of formaldehyde pick-up unit of air purifier in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, Fig. 1 is the structural representation that is applicable to the online concentration of formaldehyde pick-up unit of air purifier in an embodiment of the present invention.
The invention provides a kind of online concentration of formaldehyde pick-up unit that is applicable to air purifier, comprising: for detection of the sensor 1 of air formaldehyde concentration; For the transition components 2 of current/voltage conversion, transition components 2 is connected with sensor 1; The ADC sampling component 3 being connected with transition components 2 by two closed-loop amplifying circuits 7, the follow-up A/D analog to digital converter 4 that is provided with of ADC sampling component 3; MCU disposal system 5, MCU disposal system 5 is connected with A/D analog to digital converter 4 signals, and MCU disposal system 5 includes processor, and processor is connected with display 6 by RS485 communication protocol.
In said structure design, variation faint Formaldehyde in Environment is changed into electrochemical signals by sensor 1, electrochemical signals is changed into voltage signal by transition components 2, after two closed-loop amplifying circuits 7 amplify by being connected with A/D analog to digital converter 4, adopt two closed-loop amplifying circuits 7 can effectively suppress the shake of sensor 1, increase the stability that sensor 1 is measured, adopt two-stage amplifier, can, in the situation that not losing precision, signal be amplified to enough multiples and change into voltage signal.
In the present invention, software application Kalman filtering algorithm, further increase the precision and stability that sensor 1 is measured, signal frequency conversion and A/D analog to digital converter 4 with 4-20mA signal isolating converter convert voltage signal to digital signal, digital signal input MCU disposal system 5 stores, filtering processing, processor adopting RS485 communication protocol shows digital data transmission to the display screen of display 6 or air purifier, ensures the accuracy of data transmission.
Beneficial effect of the present invention is: online concentration of formaldehyde pick-up unit, can be loaded on needed optional position in air purifier body, the online concentration content that detects in real time formaldehyde in air purifier processing pure air, accuracy of detection is high, stability is strong, and the data transmission detecting is shown in real time to display device, can check intuitively the real-time content of formaldehyde.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. an online concentration of formaldehyde pick-up unit that is applicable to air purifier, is characterized in that, comprising:
For detection of the sensor (1) of air formaldehyde concentration;
For the transition components (2) of current/voltage conversion, described transition components is connected with described sensor;
The ADC sampling component (3) being connected with described transition components by two closed-loop amplifying circuits (7), the follow-up A/D analog to digital converter (4) that is provided with of described ADC sampling component;
MCU disposal system (5), described MCU disposal system is connected with described A/D analog to digital converter signal, and described MCU disposal system includes processor, and described processor is connected with display (6) by RS485 communication protocol.
2. the online concentration of formaldehyde pick-up unit that is applicable to air purifier according to claim 1, is characterized in that,
Described pair of closed-loop amplifying circuit includes circuit board, and described A/D analog to digital converter and described transition components are welded on described circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443047.5A CN104181318A (en) | 2014-09-01 | 2014-09-01 | Online formaldehyde concentration detection device applicable to air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443047.5A CN104181318A (en) | 2014-09-01 | 2014-09-01 | Online formaldehyde concentration detection device applicable to air purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104181318A true CN104181318A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410443047.5A Pending CN104181318A (en) | 2014-09-01 | 2014-09-01 | Online formaldehyde concentration detection device applicable to air purifier |
Country Status (1)
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| CN (1) | CN104181318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3276345A1 (en) * | 2016-07-25 | 2018-01-31 | Samsung Electronics Co., Ltd. | Formaldehyde detecting apparatus, and air treatment apparatus having the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200959004Y (en) * | 2006-09-27 | 2007-10-10 | 杨立志 | Methanal inspector |
| US20100218683A1 (en) * | 2006-01-20 | 2010-09-02 | Kangnung National University Industrial Academy Corporation Group | Gas detecting apparatus and air purification system |
| CN201607420U (en) * | 2010-03-08 | 2010-10-13 | 贝谷科技股份有限公司 | Miniature temperature-humidity-formaldehyde integrated detector |
| CN202404053U (en) * | 2011-12-15 | 2012-08-29 | 浙江同兴建设有限公司 | Detection device for formaldehyde |
| CN203366498U (en) * | 2013-07-05 | 2013-12-25 | 广西亚多漆业有限责任公司 | Formaldehyde detection apparatus |
-
2014
- 2014-09-01 CN CN201410443047.5A patent/CN104181318A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100218683A1 (en) * | 2006-01-20 | 2010-09-02 | Kangnung National University Industrial Academy Corporation Group | Gas detecting apparatus and air purification system |
| CN200959004Y (en) * | 2006-09-27 | 2007-10-10 | 杨立志 | Methanal inspector |
| CN201607420U (en) * | 2010-03-08 | 2010-10-13 | 贝谷科技股份有限公司 | Miniature temperature-humidity-formaldehyde integrated detector |
| CN202404053U (en) * | 2011-12-15 | 2012-08-29 | 浙江同兴建设有限公司 | Detection device for formaldehyde |
| CN203366498U (en) * | 2013-07-05 | 2013-12-25 | 广西亚多漆业有限责任公司 | Formaldehyde detection apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3276345A1 (en) * | 2016-07-25 | 2018-01-31 | Samsung Electronics Co., Ltd. | Formaldehyde detecting apparatus, and air treatment apparatus having the same |
| KR20180011597A (en) * | 2016-07-25 | 2018-02-02 | 삼성전자주식회사 | Formaldehyde detecting device, and air handling apparatus having the same |
| US10761047B2 (en) | 2016-07-25 | 2020-09-01 | Samsung Electronics Co., Ltd. | Formaldehyde detecting apparatus, and air treatment apparatus having the same |
| KR102650884B1 (en) * | 2016-07-25 | 2024-03-26 | 삼성전자주식회사 | Formaldehyde detecting device, and air handling apparatus having the same |
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Application publication date: 20141203 |