CN203572794U - Portable rapid indoor air quality detector - Google Patents
Portable rapid indoor air quality detector Download PDFInfo
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- CN203572794U CN203572794U CN201320732524.0U CN201320732524U CN203572794U CN 203572794 U CN203572794 U CN 203572794U CN 201320732524 U CN201320732524 U CN 201320732524U CN 203572794 U CN203572794 U CN 203572794U
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Abstract
The utility model provides a portable rapid indoor air quality detector. The portable rapid indoor air quality detector comprises an HCHO sensor module, a first current-voltage conversion circuit and a first low-pass filter amplifier circuit which are connected in sequence, also comprises an NH3 sensor module, a second current-voltage conversion circuit and a second low-pass filter amplifier circuit which are connected in sequence also comprises a C6H6 sensor module, a third current-voltage conversion circuit and a third low-pass filter amplifier circuit which are connected in sequence; and also comprises a VOC (volatile organic compound) sensor module and a fourth low-pass filter amplifier which are connected in sequence; all the low-pass filter amplifier circuits are connected with an A/D (analogue-to-digital) conversion circuit; the A/D conversion circuit is connected with an FPGA (field programmable gate array) processor; the rapid detector also comprises a power supply module. The rapid detector has the advantages of high measurement speed, high measurement accuracy, convenience in carrying and the like; simple and reliable methods and means are provided for rapidly and accurately monitoring the indoor air quality in real time in general public families.
Description
Technical field
The utility model belongs to Indoor Environment Detection technical field, relates to a kind of detector of fast detecting IAQ (indoor air quality), is specifically related to a kind of Portable type room air quality fast detector.
Background technology
Raising day by day along with living standard, people also more and more pay attention to IAQ (indoor air quality) situation, in existing various building materials, all contain a certain amount of objectionable impurities, people often judge the situation of IAQ (indoor air quality) by sense of smell, so both jeopardize the health of oneself, be secondly also difficult to the accurately quality of judgement IAQ (indoor air quality).Because the air quality accidents such as leukaemia that cause not up to standard happen occasionally, therefore in the urgent need to finding a kind of equipment that simply, fast, accurately detects IAQ (indoor air quality).In the checkout equipment using at present, the measuring error of some equipment is larger, and some equipment does not reach testing requirement, and some equipment is had relatively high expectations to operating personnel and professional knowledge, makes existing checkout equipment all be difficult to spread to numerous average families.Therefore, utility model a kind of simple to operate, easy to carry, to detect fast and accurately air quality detector be in good time and necessary.
Utility model content
The purpose of this utility model be to provide a kind of simple to operate, detect Portable type room air quality fast detector fast and accurately, be applicable to average family IAQ (indoor air quality) and detect.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of Portable type room air quality fast detector, comprises the HCHO sensor assembly, the first current-to-voltage converting circuit and the first low-pass filtering amplifying circuit that are connected successively; The NH3 sensor assembly being connected successively, the second current-to-voltage converting circuit and the second low-pass filtering amplifying circuit; The C6H6 sensor assembly being connected successively, the 3rd current-to-voltage converting circuit and the 3rd low-pass filtering amplifying circuit; The VOC sensor assembly being connected successively and the 4th low-pass filtering amplifying circuit; The first low-pass filtering amplifying circuit, the second low-pass filtering amplifying circuit, the 3rd low-pass filtering amplifying circuit and the 4th low-pass filtering amplifying circuit are connected with A/D change-over circuit respectively, and A/D change-over circuit is connected with FPGA processor; This fast detector also comprises power module.
The utility model IAQ (indoor air quality) fast detector is mainly used in the fast detecting of indoor formaldehyde concentration, ammonia concentration, benzene concentration and volatile organic matter concentration, and by the monitoring correction detected value to ambient temperature and humidity, greatly improve the accuracy of measuring, the fast simple detecting instrument in a kind of comparatively desirable scene, for IAQ (indoor air quality) fast detecting portability provides larger possibility.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model fast detector.
Fig. 2 is the electrical block diagram of the utility model fast detector.
Fig. 3 is the function module design figure of the utility model fast detector.
Fig. 4 is the power module design drawing of the utility model fast detector.
Fig. 5 is the panel designs figure of the utility model fast detector.
In Fig. 1: 1.HCHO sensor assembly, 2.NH3 sensor assembly, 3.C6H6 sensor assembly, 4.VOC sensor assembly, 5. the 3rd current-to-voltage converting circuit, 6. the 4th low-pass filtering amplifying circuit, 7. the 3rd low-pass filtering amplifying circuit, 8.A/D change-over circuit, 9.FPGA processor, 10.USB interface, 11. function buttons, 12. power modules, 13. humiture detection modules, 14. liquid crystal and pilot lamp show, 15. second low-pass filtering amplifying circuits, 16. first low-pass filtering amplifying circuits, 17. second current-to-voltage converting circuits, 18. first current-to-voltage converting circuits.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, the utility model fast detector, comprises the HCHO sensor assembly 1, the first current-to-voltage converting circuit 18 and the first low-pass filtering amplifying circuit 16 that are connected successively; The NH3 sensor assembly 2, the second current-to-voltage converting circuit 17 and the second low-pass filtering amplifying circuit 15 that are connected successively; The C6H6 sensor assembly 3 being connected successively, the 3rd current-to-voltage converting circuit 5 and the 3rd low-pass filtering amplifying circuit 7; The VOC sensor assembly 4 being connected successively and the 4th low-pass filtering amplifying circuit 6; The first low-pass filtering amplifying circuit 16, the second low-pass filtering amplifying circuit 15, the 3rd low-pass filtering amplifying circuit 7 are connected with A/D change-over circuit 8 respectively with the 4th low-pass filtering amplifying circuit 6, and A/D change-over circuit 8 is connected with FPGA processor 9; FPGA processor 9 also shows that with usb 10, function button 11, humiture detection module 13 and liquid crystal and pilot lamp 14 are connected respectively.This fast detector also comprises power module 12, and power module 12 is given each unit power supply in detector.
HCHO sensor assembly 1(formaldehyde sensor module) electrochemical sensor CH2O/S-10-S and the formaldehyde sensor interface circuit by Membrapor company, produced form.NH3 sensor assembly 2(ammoniacal sensor module) electrochemical sensor ME3-NH3 and the ammoniacal sensor interface circuit by Winsensor company, produced form; C6H6 sensor assembly 3(benzene sensor assembly) electrochemical sensor ME4-C6H6 and the benzene sensor interface circuitry by Winsensor company, produced form.
The structure of formaldehyde sensor interface circuit, ammoniacal sensor interface circuit and benzene sensor interface circuitry is identical.And the title of the electrode of electrochemical sensor CH2O/S-10-S, electrochemical sensor ME3-NH3 and electrochemical sensor ME4-C6H6 is also identical with expression symbol.Galvanochemistry formaldehyde sensor CH2O/S-10-S and sensor interface circuitry take below as example, the structure of sensor assembly is described.
The first current-to-voltage converting circuit 18, the second current-to-voltage converting circuit 17 are identical with the structure of the 3rd current-to-voltage converting circuit 5, are example below with the 3rd current-to-voltage converting circuit 5:
The first current-to-voltage converting circuit 18 comprises the second operational amplifier IC2 and the 3rd operational amplifier IC3, sees Fig. 2, the second operational amplifier IC2 and the 3rd all select ± 5V of operational amplifier power voltage supply.The normal phase input end of the second operational amplifier IC2 is connected with one end of the 6th resistance R 6 with one end of the 5th resistance R 5 respectively, the working electrode SE of another termination formaldehyde sensor of the 5th resistance R 5.The other end of the 6th resistance R 6 is connected with one end of one end of the second potentiometer R8, the moving contact of the second potentiometer R8 and the first potentiometer R7 respectively; The other end difference ground connection of the second potentiometer R8 and one end of the 15 resistance R 15, the normal phase input end of another termination the 3rd operational amplifier IC3 of the 15 resistance R 15; The inverting input of the 3rd operational amplifier IC3 is connected with one end of the 17 resistance R 17 with one end of the 16 resistance R 16 respectively; The moving contact of the other end of the other end of the 17 resistance R 17, the first potentiometer R7 and the first potentiometer R7 connects respectively the output terminal of the 3rd operational amplifier IC3, and the output terminal of the 3rd operational amplifier IC3 is connected with the first low-pass filtering amplifying circuit 16; The other end of the 16 resistance R 16 is connected with the output terminal of the second operational amplifier IC2 with one end of the 14 resistance R 14 respectively, and the inverting input of the second operational amplifier IC2 is connected with one end of the 9th resistance R 9 with one end of the 14 resistance R 14 other ends, the tenth resistance R 10 respectively; The other end ground connection of the 9th resistance R 9, the moving contact of another termination the 3rd potentiometer R11 of the tenth resistance R 10, one end of termination the 12 resistance R 12 of the 3rd potentiometer R11, another termination+2.5V voltage of the 12 resistance R 12; One end of another termination the 13 resistance R 13 of the 3rd potentiometer R11, another termination-2.5V voltage of the 13 resistance R 13.
The first low-pass filtering amplifying circuit 16 comprises four-operational amplifier IC4, select ± 5V of four-operational amplifier IC4 power voltage supply.The normal phase input end of four-operational amplifier IC4 is connected with one end of the 20 resistance R 20, the other end ground connection of the 20 resistance R 20; The inverting input of four-operational amplifier IC4 is connected with one end of the 4th capacitor C 4 with one end of the 19 resistance R 19 respectively, the other end of the 19 resistance R 19 is connected with one end of one end of the 18 resistance R 18, one end of the 3rd capacitor C 3 and the 4th potentiometer R21 respectively, the other end ground connection of the 3rd capacitor C 3, the other end of the 18 resistance R 18 is connected with the output terminal of the 3rd operational amplifier IC3; The moving contact of the other end of the 4th potentiometer R21, the 4th potentiometer R21, the 4th other end of capacitor C 4 and the output terminal of four-operational amplifier IC4 are connected with one end of the 22 resistance R 22 respectively, another termination A/D change-over circuit 8 of the 22 resistance R 22.
The output of HCHO sensor assembly 1, NH3 sensor assembly 2 and C6H6 sensor assembly 3 is low current signal, all connects a current-to-voltage converting circuit after each sensor assembly.The current signal of sensor assembly input current voltage conversion circuit enters the normal phase input end of operational amplifier by the 5th resistance R 5; The 5th resistance R 5, the 9th resistance R 9 and the 14 resistance R 14 and the second operational amplifier IC2 form first order circuit; The tenth R10, the 3rd potentiometer R11, the 12 resistance R 12 and the 13 resistance R 13 form the inverting input that offset voltage regulating circuit is connected to the second operational amplifier IC2; The 15 resistance R the 15, the 16 resistance R 16 and the 17 resistance R 17 and the 3rd operational amplifier IC3 form second level circuit; This first order circuit with second level circuit by input signal being connected with output signal with the T-shaped feedback resistive network that the second potentiometer R8 forms by the 6th resistance R 6, the first potentiometer R7, wherein meet the resistance of the 6th resistance R 6 much larger than the resistance of the first potentiometer R7, the resistance of the first potentiometer R7 is more than or equal to the resistance of the second potentiometer R8, the feedback resistance Rf ≈ R6 of this current-to-voltage converting circuit * (1+R7/R8).When R6 mono-regularly, by regulating the conversion gain that the ratio of R7 and R8 can fine-adjusting current voltage conversion circuit, the transformational relation of this current-to-voltage converting circuit is VO=Rf * I.The Main Function of low-pass filtering amplifying circuit is the signal to noise ratio (S/N ratio) that improves circuit, by regulating the 3rd potentiometer R11 can change the offset voltage of current-to-voltage converting circuit, make output voltage between 0V ~ 5V, while making to be input as zero, the output of current-to-voltage converting circuit is also zero; Because HCHO sensor assembly 1, NH3 sensor assembly 2 are different with the range of current of C6H6 sensor assembly 3 outputs, can be consistent by regulating the magnitude relationship of the 6th resistance R 6, the first potentiometer R7 and the second potentiometer R8 to realize the output voltage range of current-to-voltage converting circuit.
The voltage signal obtaining after current-to-voltage converting circuit conversion enters low-pass filtering amplifying circuit, the first low-pass filtering amplifying circuit 16, the second low-pass filtering amplifying circuit 15 and the 3rd low-pass filtering amplifying circuit 7 all adopt the anti-phase amplification active low-pass filter of second order, by regulating the 4th potentiometer R21 can change enlargement factor.
VOC sensor assembly 4(volatile organic matter module) select piD-TECH plus sensor, the supply voltage of this sensor to be+5V, the voltage signal of output 0V ~ 2.5V.The output terminal OUT of this sensor is connected with the 4th low-pass filtering amplifying circuit 7, and the 4th low-pass filtering amplifying circuit 7 adopts the second order positive that has both amplification and low-pass filtering function to amplify active low-pass filter amplifying circuit.As shown in Figure 2, the 4th low-pass filtering amplifying circuit 7 comprises the 5th operational amplifier IC5, the 5th select ± 5V of operational amplifier IC5 power voltage supply.The normal phase input end of the 5th operational amplifier IC5 is connected with one end of the 24 resistance R 24 with one end of the 7th capacitor C 7 respectively, the other end of the 24 resistance R 24 is connected with one end of the 23 resistance R 23 with one end of the 6th capacitor C 6 respectively, the output terminal OUT of another termination piD-TECH plus sensor of the 23 resistance R 23; The other end of the 7th capacitor C 7 respectively with the other end of the 6th capacitor C 6, one end of the 5th capacitor C 5 with ground be connected, the input end VCC of another termination piD-TECH plus sensor of the 5th capacitor C 5; The GND end ground connection of piD-TECH plus sensor; The inverting input of the 5th operational amplifier IC5 is connected with one end of the 26 resistance R 26 with one end of the 25 resistance R 25 respectively, the other end ground connection of the 25 resistance R 25, the output terminal of the other end of the 26 resistance R 26 and the 5th operational amplifier IC5 is connected with one end of the 27 resistance R 27 respectively, and the other end of the 27 resistance R 27 is connected with A/D change-over circuit 8.
VOC sensor supply voltage is+5V, be output as the voltage signal of 0V ~ 2.5V, output terminal connects the 4th low-pass filtering amplifying circuit 6, the 4th low-pass filtering amplifying circuit 6 has both amplification and low-pass filtering function, its enlargement factor A=1+R26/R25, here get R25=R26, enlargement factor is 2 like this, and the voltage range that second order positive amplifies the output of active low-pass filter amplifying circuit is 0V～5V.
Jing Si road low-pass filtering amplifying circuit is processed and is obtained Si road voltage signal input A/D change-over circuit 8, A/D change-over circuit 8 adopts four-way analog to digital converter AD7856-2, this analog to digital converter is controlled and is communicated by letter by FPGA processor 9, and analog to digital converter is transported to data in FPGA processor 9, to carry out subsequent treatment.
The field programmable gate array EP2C5T144C8 of FPGA processor adopting ALTERA company, comprise that with its common functional module forming controlling LCD MODULE LCD240128 carries out the demonstration of four kinds of content of material and ambient temperature and humidity, whether control indicating lamp module utilizes four kinds of content of material of diode displaying to exceed standard, accept the printing key of key-press module input, options button and acknowledgement key function information, the humiture that the temperature and humidity measurement module that control consists of AM2302 is carried out indoor environment detects, the USB interface that control consists of SL811HST prints output, as shown in Figure 3.
After the utility model fast detector powers on, in LCDs, inquiry selects to need the object of test, can select to be arbitrarily no less than a kind of measurand, after choosing, press acknowledgement key, instrument starts to detect the humiture value of current environment and the content of measurand, while is in the temperature and humidity value of liquid crystal display screen display current environment, and according to humiture value, the content of the measured matter under current environment is revised and shown in LCDs, four pilot lamp compare according to indoor environment national standard content limit value default in the current revised content value of measurand and program, if work as pre-test revised content value, exceed limit value, pilot lamp becomes redness, if do not exceeded, be green, if not selecting this material measures, corresponding pilot lamp does not show.In instrument use procedure, by USB interface, connect mini-printer, after pressing printing key, can print current each content of material measuring, the humiture value of current environment and the limit value of national standard.During working sensor, potentiostat circuit performance autoregulation.
FPGA accepts printing key, options button and the acknowledgement key function information of key-press module input, options button is used for selecting measurand, acknowledgement key is used for confirming selected measurand information, and printing key is used for controlling print sensor and measures also corrected concentration value, national normal value and current humiture value; The humiture that the temperature and humidity measurement module that FPGA control consists of AM2302 device is carried out indoor environment detects, and the concentration value detecting for revising sensor improves measuring accuracy.FPGA controls the output that the USB interface consisting of SL811HST prints data.
This instrument panel design as shown in Figure 5, comprises liquid crystal display piece, four pilot lamp, three function buttons and a USB interface.
The utility model fast detector can quick and precisely effectively be measured the content of formaldehyde in indoor air (HCHO), ammonia (NH3), benzene (C6H6) and volatile organic matter (VOC), by detecting the humiture value of indoor environment, again revise measured value, make measured value more accurate, by liquid crystal display, show numerical value and whether these four kinds of content of material are exceeded standard and carry out pilot lamp sign, and possessing USB interface and can be connected with mini-printer the measured information obtaining of instrument that prints.
Claims (8)
1. a Portable type room air quality fast detector, is characterized in that, comprises the HCHO sensor assembly (1), the first current-to-voltage converting circuit (18) and the first low-pass filtering amplifying circuit (16) that are connected successively; The NH3 sensor assembly (2) being connected successively, the second current-to-voltage converting circuit (17) and the second low-pass filtering amplifying circuit (15); The C6H6 sensor assembly (3) being connected successively, the 3rd current-to-voltage converting circuit (5) and the 3rd low-pass filtering amplifying circuit (7); The VOC sensor assembly (4) being connected successively and the 4th low-pass filtering amplifying circuit (6); The first low-pass filtering amplifying circuit (16), the second low-pass filtering amplifying circuit (15), the 3rd low-pass filtering amplifying circuit (7) and the 4th low-pass filtering amplifying circuit (6) are connected with A/D change-over circuit (8) respectively, and A/D change-over circuit (8) is connected with FPGA processor (9); This fast detector also comprises power module (12).
2. Portable type room air quality fast detector according to claim 1, is characterized in that, described HCHO sensor assembly (1) is comprised of electrochemical sensor CH2O/S-10-S and formaldehyde sensor interface circuit; NH3 sensor assembly (2) is comprised of electrochemical sensor ME3-NH3 and ammoniacal sensor interface circuit; C6H6 sensor assembly (3) is comprised of electrochemical sensor ME4-C6H6 and benzene sensor interface circuitry; These three kinds of electrochemical sensors include electrode (CE), contrast electrode (RE) and working electrode (SE); The structure of these three kinds of sensor interface circuitries is identical; Described sensor interface circuitry comprises the first operational amplifier (IC1) and field effect transistor (Q); Electrochemical sensor electrode (CE) is connected with the output terminal of the first operational amplifier (IC1) with one end of the first electric capacity (C1), one end of the second electric capacity (C2) respectively; The contrast electrode of electrochemical sensor (RE) is connected with the source electrode of field effect transistor (Q) with one end of the first resistance (R1) respectively, the drain electrode of field effect transistor (Q) connects the working electrode (SE) of electrochemical sensor, the grid of field effect transistor (Q) is connected with one end of the 4th resistance (R4), another termination+5V voltage of the 4th resistance (R4); The other end of the first resistance (R1) is connected with the other end of the first electric capacity (C1) with one end of the second resistance (R2) respectively, and the other end of the second resistance (R2) connects respectively the other end of the second electric capacity (C2) and the inverting input of the first operational amplifier (IC1); The normal phase input end of the first operational amplifier (IC1) connects one end of the 3rd resistance (R3), the other end ground connection of the 3rd resistance (R3); The working electrode of electrochemical sensor (SE) is connected with current-to-voltage converting circuit.
3. Portable type room air quality fast detector according to claim 1, is characterized in that, described the first current-to-voltage converting circuit (18), the second current-to-voltage converting circuit (17) are identical with the structure of the 3rd current-to-voltage converting circuit (5),
Described current-to-voltage converting circuit comprises the second operational amplifier (IC2) and the 3rd operational amplifier (IC3), the normal phase input end of the second operational amplifier (IC2) is connected with one end of the 6th resistance (R6) with one end of the 5th resistance (R5) respectively, the working electrode (SE) of another termination electrochemical sensor of the 5th resistance (R5); The other end of the 6th resistance (R6) is connected with one end of one end of the second potentiometer (R8), the moving contact of the second potentiometer (8) and the first potentiometer (R7) respectively; The other end difference ground connection of the second potentiometer (R8) and one end of the 15 resistance (R15), the normal phase input end of another termination the 3rd operational amplifier (IC3) of the 15 resistance (R15); The inverting input of the 3rd operational amplifier (IC3) is connected with one end of the 17 resistance (R17) with one end of the 16 resistance (R16) respectively; The moving contact of the other end of the other end of the 17 resistance (R17), the first potentiometer (R7) and the first potentiometer (R7) connects respectively the output terminal of the 3rd operational amplifier (IC3), and the output terminal of the 3rd operational amplifier (IC3) is connected with low-pass filtering amplifying circuit; The other end of the 16 resistance (R16) is connected with the output terminal of the second operational amplifier (IC2) with one end of the 14 resistance (R14) respectively, and the inverting input of the second operational amplifier (IC2) is connected with one end of the 9th resistance (R9) with one end of the 14 resistance (R14) other end, the tenth resistance (R10) respectively; The other end ground connection of the 9th resistance (R9), the moving contact of another termination the 3rd potentiometer (R11) of the tenth resistance (R10), one end of one termination the 12 resistance (R12) of the 3rd potentiometer (R11), another termination+2.5V voltage of the 12 resistance (R12); One end of another termination the 13 resistance (R13) of the 3rd potentiometer (R11), another termination-2.5V voltage of the 13 resistance (R13).
4. Portable type room air quality fast detector according to claim 1, is characterized in that, described the first low-pass filtering amplifying circuit (16), the second low-pass filtering amplifying circuit (15) are identical with the structure of the 3rd low-pass filtering amplifying circuit (7);
Described low-pass filtering amplifying circuit comprises four-operational amplifier (IC4), and the normal phase input end of four-operational amplifier (IC) is connected with one end of the 20 resistance (R20), the other end ground connection of the 20 resistance (R20); The inverting input of four-operational amplifier (IC4) is connected with one end of the 4th electric capacity (C4) with one end of the 19 resistance (R19) respectively, the other end of the 19 resistance (R19) is connected with one end of one end of the 18 resistance (R18), one end of the 3rd electric capacity (C3) and the 4th potentiometer (R21) respectively, the other end ground connection of the 3rd electric capacity (C3), the other end of the 18 resistance (R18) is connected with the output terminal of the 3rd operational amplifier (IC3); The moving contact of the other end of the 4th potentiometer (R21), the 4th potentiometer (R21), the 4th other end of electric capacity (C4) and the output terminal of four-operational amplifier (IC4) are connected with one end of the 22 resistance (R22) respectively, another termination A/D change-over circuit (8) of the 22 resistance (R22).
5. Portable type room air quality fast detector according to claim 1, is characterized in that, described VOC sensor assembly (4) adopts piD-TECH plus sensor; The 4th described low-pass filtering amplifying circuit (6) comprises the 5th operational amplifier (IC5), the normal phase input end of the 5th operational amplifier (IC5) is connected with one end of the 24 resistance (R24) with one end of the 7th electric capacity (C7) respectively, the other end of the 24 resistance (R24) is connected with one end of the 23 resistance (R23) with one end of the 6th electric capacity (C6) respectively, the output terminal (OUT) of another termination piD-TECH plus sensor of the 23 resistance (R23); The other end of the 7th electric capacity (C7) respectively with the other end of the 6th electric capacity (C6), one end of the 5th electric capacity (C5) with ground be connected, the input end (VCC) of another termination piD-TECH plus sensor of the 5th electric capacity (C5); (GND) end ground connection of piD-TECH plus sensor; The inverting input of the 5th operational amplifier (IC5) is connected with one end of the 26 resistance (R26) with one end of the 25 resistance (R25) respectively, the other end ground connection of the 25 resistance (R25), the output terminal of the other end of the 26 resistance (R26) and the 5th operational amplifier (IC5) is connected with one end of the 27 resistance (R27) respectively, and the other end of the 27 resistance (R27) is connected with A/D change-over circuit (8).
6. according to Portable type room air quality fast detector described in claim 1,4 or 5, it is characterized in that, described A/D change-over circuit (8) adopts four-way analog to digital converter AD7856-2.
7. Portable type room air quality fast detector according to claim 1, it is characterized in that, FPGA processor (9) also shows that with USB interface (10), function button (11), humiture detection module (13) and liquid crystal and pilot lamp (14) are connected respectively.
8. according to Portable type room air quality fast detector described in claim 1 or 7, it is characterized in that, described FPGA processor (9) adopts field programmable gate array EP2C5T144C8 device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732524.0U CN203572794U (en) | 2013-11-19 | 2013-11-19 | Portable rapid indoor air quality detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320732524.0U CN203572794U (en) | 2013-11-19 | 2013-11-19 | Portable rapid indoor air quality detector |
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| CN203572794U true CN203572794U (en) | 2014-04-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592348A (en) * | 2013-11-19 | 2014-02-19 | 西北师范大学 | Portable quick indoor air quality detector |
| CN104345137A (en) * | 2014-09-26 | 2015-02-11 | 邹思佳 | Paint mixing cutter for detecting harmful substances |
| CN107505363A (en) * | 2017-09-01 | 2017-12-22 | 深圳小气科技有限公司 | Detection of Air Quality method and air quality detecting device |
| CN109164163A (en) * | 2018-08-30 | 2019-01-08 | 亚翔系统集成科技（苏州）股份有限公司 | VOC detection method in a kind of toilet |
| WO2022141475A1 (en) * | 2020-12-31 | 2022-07-07 | 广州奥松电子有限公司 | Measurement system and apparatus, and measurement method and temperature and humidity compensation method therefor |
-
2013
- 2013-11-19 CN CN201320732524.0U patent/CN203572794U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592348A (en) * | 2013-11-19 | 2014-02-19 | 西北师范大学 | Portable quick indoor air quality detector |
| CN103592348B (en) * | 2013-11-19 | 2015-11-04 | 西北师范大学 | Portable quick indoor air quality detector |
| CN104345137A (en) * | 2014-09-26 | 2015-02-11 | 邹思佳 | Paint mixing cutter for detecting harmful substances |
| CN107505363A (en) * | 2017-09-01 | 2017-12-22 | 深圳小气科技有限公司 | Detection of Air Quality method and air quality detecting device |
| CN109164163A (en) * | 2018-08-30 | 2019-01-08 | 亚翔系统集成科技（苏州）股份有限公司 | VOC detection method in a kind of toilet |
| WO2022141475A1 (en) * | 2020-12-31 | 2022-07-07 | 广州奥松电子有限公司 | Measurement system and apparatus, and measurement method and temperature and humidity compensation method therefor |
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