CN108627617A - A kind of air quality display system - Google Patents
A kind of air quality display system Download PDFInfo
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- CN108627617A CN108627617A CN201810475190.0A CN201810475190A CN108627617A CN 108627617 A CN108627617 A CN 108627617A CN 201810475190 A CN201810475190 A CN 201810475190A CN 108627617 A CN108627617 A CN 108627617A
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical group O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 117
- 239000013618 particulate matter Substances 0.000 claims abstract description 42
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 claims description 21
- 230000001052 transient effect Effects 0.000 claims description 12
- 239000005416 organic matter Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
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- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of air quality display systems, are related to air quality monitoring technical field, including：Single chip machine controlling circuit, volatile organic compounds signal acquisition circuit, formaldehyde signal acquisition circuit, particulate matter signal Acquisition Circuit, Temperature Humidity Sensor, wifi circuits, warning circuit, power-supplying circuit, display screen, stand-by power supply；Volatile organic compounds signal acquisition circuit, formaldehyde signal acquisition circuit, particulate matter signal Acquisition Circuit, Temperature Humidity Sensor, wifi circuits, warning circuit, power-supplying circuit, display screen, stand-by power supply are all connect with single chip machine controlling circuit.The invention has the advantages that：Air quality that can in real time in monitoring of environmental, allows user to know the quality of air quality in real time, and be equipped with warning device, when the threshold value more than setting can alarm, so as to remind user in time so that user takes timely measure, and provides good environment to the user.
Description
Technical field
The present invention relates to air quality monitoring technical fields, are more particularly to a kind of air quality display system.
Background technology
Because people's most of the time is all in interior, life, study, work, therefore the quality of indoor air quality is directly
People's health is influenced, people also increasingly pay attention to indoor air quality.
In the prior art, air quality cannot be monitored in real time, and user can not know the quality of air quality in real time,
So as to cause timely processing cannot be carried out to the quality of air quality in time, it is directly typically vented gas purifier in the environment
Etc instrument carry out purification air, do not need to be purified in fact when air quality is good, cause in this way digest power consumption, no
Conducive to saving cost, and existing air quality monitor volume is big, power consumption is high.
Invention content
Technical problem to be solved by the present invention lies in that cannot monitor air quality in real time, user can not know sky in real time
The quality of makings amount causes user that cannot carry out timely processing to the quality of air quality in time.
The present invention is that solution above-mentioned technical problem, specific technical solution are as follows by the following technical programs：
A kind of air quality display system, including：Single chip machine controlling circuit, volatile organic compounds signal acquisition electricity
Road, formaldehyde signal acquisition circuit, particulate matter signal Acquisition Circuit, Temperature Humidity Sensor, wifi circuits, warning circuit, power supply supply
Circuit, display screen, stand-by power supply；The volatile organic compounds signal acquisition circuit, the formaldehyde signal acquisition circuit,
The particulate matter signal Acquisition Circuit, the Temperature Humidity Sensor, the wifi circuits, the warning circuit, the power supply supply
Circuit, the display screen, the stand-by power supply are all connect with the single chip machine controlling circuit.
Preferably, the single chip machine controlling circuit includes STM32F103V and its peripheral circuit, and the 9th of STM32F103V the
11 foot PB5 are connect with the feeder ear of volatile organic compounds signal acquisition circuit, the 79th foot of STM32F103V
PC11 is connect with the signal output end of volatile organic compounds signal acquisition circuit；The 97th foot PE0 of STM32F103V
It is connect with the feeder ear of formaldehyde signal acquisition circuit, the 24th foot PA1 and the formaldehyde signal acquisition circuit of STM32F103V
Output end connects, and the 54th foot PB15 of STM32F103V is connect with the feeder ear of particulate matter signal Acquisition Circuit,
The 96th foot PB9 of STM32F103V and the output end of Temperature Humidity Sensor connect, the 32nd foot PA7 of STM32F103V
It is connect with the feeder ear of wifi circuits, the 90th octal PE1 of STM32F103V and the input terminal of warning circuit connect, and power supply supplies
The output end of circuit and the feeder ear of STM32F103V connect, the third pin of display screen and the first pin of STM32F103V
PE2 connections, the second pin PE3 connections of the 4th pin and STM32F103V of display screen, the 5th pin of display screen with
The third pin PE4 connections of STM32F103V, the 4th pin PE5 connections of the 6th pin and STM32F103V of display screen are shown
5th pin PE6 connections of the 7th pin and STM32F103V of display screen, the output end of stand-by power supply and the of STM32F103V
Six pin VBAT connections.
Preferably, the volatile organic compounds signal acquisition circuit include resistance R1, resistance R2, NPN triode N1,
Resistance R3, resistance R4, resistance R5, PMOS tube M1, resistance R6, capacitance C1, capacitance C2, light emitting diode D1, volatile organic matter
Gas sensor, resistance R7, PNP triode P1, capacitance C3, PNP triode P2, resistance R8, capacitance C4, power supply V1, power supply V2,
Power supply V3；One end of resistance R1 and the 91st foot PB5 connections of STM32F103V, the other end and NPN triode of resistance R1
The base stage of N1, one end connection of resistance R2, the emitter of NPN triode N1 are connect with one end of one end of resistance R3, resistance R4,
The other end of resistance R4 is connect with the grid of one end of resistance R5, PMOS tube M1, the other end of resistance R3, resistance R5 it is another
It holds, the source electrode of PMOS tube M1 is connect with power supply V1, drain electrode and one end of resistance R6, the anode of capacitance C1, the capacitance of PMOS tube M1
One end of C2, the feeder ear connection of volatile organic matter gas sensor, the other end and Light-Emitting Diode D1 of resistance R6 are just
Pole connects, the other end of resistance R2, the collector of NPN pipes N1, the other end of capacitance C1, the other end of capacitance C2, light-emitting diode
The cathode of pipe D2 is all grounded, the output end of volatile organic matter gas sensor and one end of resistance R7, the collector of PNP pipe P1
Connection, the other end of resistance R7, one end of capacitance C3 are all connect with the base stage of PNP pipe P1, the other end, the PNP pipe P1 of resistance R7
Base stage, capacitance C3 one end all connect with power supply V2, the other end of capacitance C3 ground connection, emitter and the PNP pipe P2 of PNP pipe P1
Emitter connection, the base stage of PNP pipe P2 connect with one end of resistance R8, one end of capacitance C4, power supply V3, the one of resistance R8
End, capacitance C4 one end there is power supply V3 connections, the other end of resistance R8 to be connect with the collector of PNP pipe P2, resistance R8's is another
One end, PNP pipe P2 collector all connect with the 79th foot PC11 of STM32F103V, the other end of capacitance C4 ground connection.
Preferably, the formaldehyde signal acquisition circuit includes resistance R9, resistance R10, NPN triode N2, resistance R11, electricity
Hinder R12, resistance R13, PMOS tube M2, resistance R14, light emitting diode D2, formaldehyde sensor, resistance R15, capacitance C5, diode
D3, power supply V4；One end of resistance R9 and the 97th foot PE0 connections of STM32F103V, the other end and tri- poles NPN of resistance R9
The base stage of pipe N2, one end connection of resistance R10, the emitter of NPN triode N2 and one end of resistance R11, one end of resistance R12
Connection, the other end of resistance R12 are connect with the grid of one end of resistance R13, PMOS tube M2, the other end, the resistance of resistance R13
The other end of R11, the source electrode of PMOS tube M2 are connect with power supply V4, and the drain electrode of PMOS tube M2 is sensed with one end of resistance R14, formaldehyde
15th pin of device connects, and the other end of resistance R14 and the anode of Light-Emitting Diode connect, the other end, the NPN of resistance R10
The collector of pipe N2, the cathode of light emitting diode D2 are all grounded, the 14th pin of formaldehyde sensor, the 5th of formaldehyde sensor the
Pin, one end of capacitance C5, the positive of diode D3 are all grounded, and the tenth pin of formaldehyde sensor connects with one end of resistance R15
It connects, the other end of resistance R15 is connect with the cathode of the other end of capacitance C5, diode D3, the cathode of diode D3, capacitance C5
The other end, resistance R15 the other end all connect with the 24th foot PA1 of STM32F103V.
Preferably, the particulate matter signal Acquisition Circuit include resistance R16, resistance R17, NPN triode N3, resistance R18,
Resistance R19, resistance R20, PMOS tube M3, resistance R21, light emitting diode D4, resistance R22, particulate matter sensors, power supply V5；Electricity
Hinder the 54th foot PB15 connections of one end and STM32F103V of R16, the base of the other end and NPN triode N3 of resistance R16
One end connection of pole, resistance R17, the emitter of NPN triode N3 are connect with one end of one end of resistance R18, resistance R19, electricity
The other end of resistance R19 is connect with the grid of one end of resistance R20, PMOS tube M3, the other end of resistance R18, resistance R20 it is another
It holds, the source electrode of PMOS tube M3 is connect with power supply V5, the drain electrode of PMOS tube M3 and one end of resistance R21, one end company of resistance R22
It connects, the other end of resistance R21 is connect with the anode of light emitting diode D4, the other end of resistance R17, the current collection of NPN triode N3
Pole, light emitting diode D4 cathode be all grounded, the feeder ear of the other end of resistance R22 and particulate matter sensors connects, particulate matter
53rd foot PB14 connections of the third pin and STM32F103V of sensor, the 4th pin of particulate matter sensors with
The 47th foot PB10 connections of STM32F103V, the 5th pin of particulate matter sensors and the 40th octal of STM32F103V
PB11 connections, the 52nd foot PB13 connections of the 6th pin and STM32F103V of particulate matter sensors, particulate matter sensors
The 8th pin and STM32F103V the 51st foot PB12 connections, particulate matter sensors second pin ground connection.
Preferably, the wifi circuits include resistance R23, resistance R24, NPN triode N4, resistance R25, resistance R26, electricity
Hinder R27, PMOS tube M4, resistance R28, light emitting diode D5, resistance R29, capacitance C6, the first low-dropout regulator, capacitance C7, electricity
Hold C8, capacitance C9, wifi chip；One end of resistance R23 and the 32nd foot PA7 connections of STM32F103V, resistance R23's is another
One end is connect with one end of the base stage of NPN triode N4, resistance R24, the emitter of NPN triode N4 and one end of resistance R25,
One end of resistance R26 connects, and the other end of resistance R26 is connect with the grid of one end of resistance R27, PMOS tube M4, resistance R25's
The other end, the other end of resistance R27, PMOS tube M4 source electrode connect with power supply V6, the drain electrode of PMOS tube M4 and the one of resistance R28
The first pin connection at end, one end of capacitance C6, one end of resistance R29, the first low-dropout regulator, the other end of resistance R28
With light emitting diode D5 anode connect, the other end of resistance R14, the collector of NPN triode N4, light emitting diode D5 bear
Pole is all grounded, and the other end of resistance R29 is connect with the third pin of the first low-dropout regulator, and the of the first low-dropout regulator
Four pins are connect with one end of capacitance C7, the 5th pin of the first low-dropout regulator and one end of capacitance C8, wifi chip
Feeder ear connects, the other end of capacitance C6, the second pin of the first low-dropout regulator, the other end of capacitance C7, capacitance C8
The other end is all grounded, and one end of capacitance C9 and the feeder ear of wifi chip connect, the other end ground connection of capacitance C9.
Preferably, the warning circuit includes resistance R30, resistance R31, NPN triode N5, buzzer, resistance R32, electricity
Hinder the 90th octal PE1 connections of one end and STM32F103V of R30, the other end of resistance R30 and one end of resistance R31, NPN
The base stage of triode N5 connects, and the other end of resistance R31, the collector of NPN triodes N5 are all grounded, the hair of NPN triodes N5
The second pin of emitter-base bandgap grading and buzzer connects, and the first pin anode of buzzer is connect with one end of resistance R32, resistance R32's
Another termination power V7.
Preferably, the power-supplying circuit includes USB interface, transient supression diode, diode D6, capacitance C10, electricity
Hinder R33, the second low-dropout regulator, capacitance C11, capacitance C12, power supply V8, the first pin and the transient supression two level of USB interface
One end of pipe connects, the other end of transient supression diode and the cathode of diode D6, one end of capacitance C10, resistance R33 one
The first pin connection at end, the second low-dropout regulator, the 5th pin of USB interface, the anode of diode D6 are all grounded, transition
Inhibit the other end of diode, the cathode of diode D6, one end of capacitance C10, one end of resistance R33, the second low voltage difference voltage stabilizing
First pin of device is all connect with power supply V8, and the other end of resistance R33 is connect with the third pin of the second low-dropout regulator, the
4th pin of two low-dropout regulators is connect with one end of capacitance C11, the other end of capacitance C10, the second low-dropout regulator
Second pin, the other end of capacitance C11, one end of capacitance C12 be all grounded, the other end of capacitance C12 and the second low voltage difference are steady
5th pin of depressor connects, and the 5th pin of the second low-dropout regulator and the feeder ear of STM32F103V connect.
Preferably, the stand-by power supply includes battery, capacitance C13, capacitance C14, capacitance C15, diode D7, diode
D8, power supply V9, one end of capacitance C13, one end of capacitance C14, one end of capacitance C15, the cathode of diode D7, diode D8
The anode of 6th pin VBAT connections of cathode and STM32F103V, diode D7 is connect with power supply V9, the anode of diode D8
With battery anode connect, the other end of capacitance C13, the other end of capacitance C14, the other end of capacitance C15, diode D8 bear
Pole is all grounded.
Preferably, the formaldehyde sensor selects ZE08-CH2O.
The present invention has the following advantages compared with prior art：
The present invention is passing through volatile organic compounds signal acquisition circuit, formaldehyde signal acquisition circuit, particulate matter signal
Acquisition Circuit, Temperature Humidity Sensor can in real time in monitoring of environmental air quality, and pass through wifi circuit transmissions to mobile end
End and the quality that air quality is shown by display screen allow user to know the quality of air quality in real time, and are set equipped with alarm
It is standby, when the threshold value more than setting can alarm, so as to remind user in time so that user takes timely measure to air
It is purified, provides good environment to the user, and the system is small, low in energy consumption.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of air quality display system of the embodiment of the present invention.
Fig. 2 is a kind of circuit connection diagram of air quality display system of the embodiment of the present invention.
Fig. 3 is a kind of volatile organic compounds signal acquisition circuit of air quality display system of the embodiment of the present invention
Circuit diagram.
Fig. 4 is a kind of circuit diagram of the formaldehyde signal acquisition circuit of air quality display system of the embodiment of the present invention.
Fig. 5 is a kind of circuit diagram of the particulate matter signal Acquisition Circuit of air quality display system of the embodiment of the present invention.
Fig. 6 is a kind of circuit diagram of the wifi circuits of air quality display system of the embodiment of the present invention.
Fig. 7 is a kind of circuit diagram of the warning circuit of air quality display system of the embodiment of the present invention.
Fig. 8 is a kind of circuit diagram of the power-supplying circuit of air quality display system of the embodiment of the present invention.
Fig. 9 is a kind of circuit diagram of the stand-by power supply of air quality display system of the embodiment of the present invention.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Figure 1, a kind of air quality display system, including：Single chip machine controlling circuit, volatile organic compounds letter
Number Acquisition Circuit, formaldehyde signal acquisition circuit, particulate matter signal Acquisition Circuit, Temperature Humidity Sensor, wifi circuits, alarm electricity
Road, power-supplying circuit, display screen, stand-by power supply；Volatile organic compounds signal acquisition circuit, formaldehyde signal acquisition electricity
It is road, particulate matter signal Acquisition Circuit, Temperature Humidity Sensor, wifi circuits, warning circuit, power-supplying circuit, display screen, spare
Power supply is all connect with single chip machine controlling circuit.
As shown in Fig. 2, single chip machine controlling circuit includes STM32F103V and its peripheral circuit, 91 feet of STM32F103V
PB5 is connect with the feeder ear of volatile organic compounds signal acquisition circuit, and the 79 foot PC11 of STM32F103V have with volatility
The signal output end of machine compound signal acquisition circuit connects；The 97 foot PE0 of STM32F103V and formaldehyde signal acquisition circuit
Feeder ear connects, and the 24 foot PA1 of STM32F103V are connect with the output end of formaldehyde signal acquisition circuit, 54 feet of STM32F103V
PB15 is connect with the feeder ear of particulate matter signal Acquisition Circuit, the output of the 96 foot PB9 and Temperature Humidity Sensor of STM32F103V
End connection, the 32 foot PA7 of STM32F103V are connect with the feeder ear of wifi circuits, 98 foot PE1 and the alarm electricity of STM32F103V
The input terminal on road connects, the output end of power-supplying circuit and the 50 pin VDD_1 of STM32F103V, 75 pin VDD_2,100
Pin VDD_3,28 pin VDD_4,11 pin VDD_5 connections, 3 pins of display screen and the 1 pin PE2 of STM32F103V connect
It connects, 2 pin PE3 connections of 4 pins and STM32F103V of display screen, 5 pins of display screen and 3 pins of STM32F103V
PE4 connections, 4 pin PE5 connections of 6 pins and STM32F103V of display screen, 7 pins of display screen and the 5 of STM32F103V
Pin PE6 connections, 6 pin VBAT connections of the output end and STM32F103V of stand-by power supply.
As shown in figure 3, volatile organic compounds signal acquisition circuit include resistance R1, resistance R2, NPN triode N1,
Resistance R3, resistance R4, resistance R5, PMOS tube M1, resistance R6, capacitance C1, capacitance C2, light emitting diode D1, volatile organic matter
Gas sensor, resistance R7, PNP triode P1, capacitance C3, PNP triode P2, resistance R8, capacitance C4, power supply V1, power supply V2,
Power supply V3；One end of resistance R1 and the 91 foot PB5 connections of STM32F103V, the base of the other end and NPN triode N1 of resistance R1
One end connection of pole, resistance R2, the emitter of NPN triode N1 are connect with one end of one end of resistance R3, resistance R4, resistance R4
The other end connect with the grid of one end of resistance R5, PMOS tube M1, the other end of resistance R3, the other end of resistance R5, PMOS
The source electrode of pipe M1 is connect with power supply V1, the drain electrode of PMOS tube M1 and one end of resistance R6, the anode of capacitance C1, capacitance C2 one
The connection of feeder ear 1 at end, volatile organic matter gas sensor, the other end of resistance R6 connect with the anode of Light-Emitting Diode D1
It connects, the other end of resistance R2, the collector of NPN pipes N1, the other end of capacitance C1, the other end of capacitance C2, Light-Emitting Diode D2
Cathode be all grounded, the output end 8 of volatile organic matter gas sensor and one end of resistance R7, PNP pipe P1 collector connect
It connects, the other end of resistance R7, one end of capacitance C3 are all connect with the base stage of PNP pipe P1, the other end of resistance R7, PNP pipe P1
Base stage, capacitance C3 one end all connect with power supply V2, the other end of capacitance C3 ground connection, the emitter of PNP pipe P1 is with PNP pipe P2's
Emitter connects, and the base stage of PNP pipe P2 is connect with one end of resistance R8, one end of capacitance C4, power supply V3, one end of resistance R8,
One end of capacitance C4 has power supply V3 connections, the other end of resistance R8 to be connect with the collector of PNP pipe P2, and resistance R8's is another
It holds, the collector of PNP pipe P2 is all connect with the 79 foot PC11 of STM32F103V, the other end ground connection of capacitance C4.Wherein, resistance
R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance 7, resistance R8 resistance value be all that 1K, NPN pipe N1 is selected
S8050 chips, PNP pipe P1 and PNP pipe P2 select S12302, and the capacitance of capacitance C1 is 2.2uF, the capacitance of capacitance C2 is
0.1uF, capacitance C3 capacitance be 0.1uF, the capacitance of capacitance C4 is 0.1uF, power supply V1 is 5V, power supply V2 is 5V, capacitance
V3 is 3.3V, and volatile organic matter gas sensor selects MS1100.
As shown in figure 4, formaldehyde signal acquisition circuit includes resistance R9, resistance R10, NPN triode N2, resistance R11, resistance
R12, resistance R13, PMOS tube M2, resistance R14, light emitting diode D2, formaldehyde sensor, resistance R15, capacitance C5, diode D3,
Power supply V4；One end of resistance R9 and the 97 foot PE0 connections of STM32F103V, the base of the other end and NPN triode N2 of resistance R9
One end connection of pole, resistance R10, the emitter of NPN triode N2 are connect with one end of one end of resistance R11, resistance R12, electricity
The other end of resistance R12 is connect with the grid of one end of resistance R13, PMOS tube M2, the other end of resistance R13, resistance R11 it is another
End, PMOS tube M2 source electrode connect with power supply V4, drain electrode and one end of resistance R14, the 15 of formaldehyde sensor of PMOS tube M2 are drawn
Foot connects, and the anode of the other end of resistance R14 and Light-Emitting Diode connects, the other end of resistance R10, the collector of NPN pipes N2,
The cathode of light emitting diode D2 is all grounded, 14 pins of formaldehyde sensor, 5 pins of formaldehyde sensor, one end of capacitance C5, two
The anode of pole pipe D3 is all grounded, and 10 pins of formaldehyde sensor are connect with one end of resistance R15, the other end and the electricity of resistance R15
Hold the cathode connection of the other end of C5, diode D3, the cathode of diode D3, the other end of capacitance C5, resistance R15 the other end
It is all connect with the 24 foot PA1 of STM32F103V, the 5 pins ground connection of formaldehyde sensor.Wherein, resistance R9, resistance R10, resistance
R11, resistance R12, resistance R13, resistance R14, resistance R15 resistance value be all 1K, the capacitance of capacitance C5 is 0.1uF, diode D3
TVS-3.3V is selected, it is 5V that formaldehyde sensor, which selects ZE08-CH2O, power supply V4,.
As shown in figure 5, particulate matter signal Acquisition Circuit include resistance R16, resistance R17, NPN triode N3, resistance R18,
Resistance R19, resistance R20, PMOS tube M3, resistance R21, light emitting diode D4, resistance R22, particulate matter sensors, power supply V5；Electricity
Hinder the 54 foot PB15 connections of one end and STM32F103V of R16, the other end of resistance R16 and the base stage of NPN triode N3, resistance
One end of R17 connects, and the emitter of NPN triode N3 is connect with one end of one end of resistance R18, resistance R19, resistance R19's
The other end is connect with the grid of one end of resistance R20, PMOS tube M3, the other end of resistance R18, the other end of resistance R20, PMOS
The source electrode of pipe M3 is connect with power supply V5, and the drain electrode of PMOS tube M3 is connect with one end of one end of resistance R21, resistance R22, resistance
The other end of R21 is connect with the anode of light emitting diode D4, and the other end of resistance R17, shines at the collector of NPN triode N3
The cathode of diode D4 is all grounded, and the other end of resistance R22 and the feeder ear of particulate matter sensors connect, particulate matter sensors
53 foot PB14 connections of 3 pins and STM32F103V, 4 pins of particulate matter sensors and the 47 foot PB10 of STM32F103V connect
Connect, 48 foot PB11 connections of 5 pins and STM32F103V of particulate matter sensors, 6 pins of particulate matter sensors with
The 52 foot PB13 connections of STM32F103V, 51 foot PB12 connections of 8 pins and STM32F103V of particulate matter sensors, particulate matter
2 pins of sensor are grounded.Wherein, resistance R16, resistance R17, resistance R18, resistance R19, resistance 20, resistance R21, resistance R22
Resistance value be all 1K, NPN pipes N3 selects S8050, and it is 5V that particulate matter sensors, which select PMS5003S, power supply V5,.
As shown in fig. 6, wifi circuits include resistance R23, resistance R24, NPN triode N4, resistance R25, resistance R26, electricity
Hinder R27, PMOS tube M4, resistance R28, light emitting diode D5, resistance R29, capacitance C6, low-dropout regulator, capacitance C7, capacitance
C8, capacitance C9, wifi chip；One end of resistance R23 and the 32 foot PA7 connections of STM32F103V, the other end of resistance R23 with
The base stage of NPN triode N4, one end connection of resistance R24, the emitter of NPN triode N4 and one end of resistance R25, resistance
One end of R26 connects, and the other end of resistance R26 is connect with the grid of one end of resistance R27, PMOS tube M4, and resistance R25's is another
End, the other end of resistance R27, PMOS tube M4 source electrode connect with power supply V6, the drain electrode of PMOS tube M4 and one end of resistance R28,
The 1 pin connection of one end of capacitance C6, one end of resistance R29, low-dropout regulator, the other end and light-emitting diodes of resistance R28
Pipe D5 anode connection, the other end of resistance R14, the collector of NPN triode N4, light emitting diode D5 cathode be all grounded,
The other end of resistance R29 and 3 pins of low-dropout regulator connect, and 4 pins of low-dropout regulator connect with one end of capacitance C7
It connects, 5 pins of low-dropout regulator are connect with the feeder ear of one end of capacitance C8, wifi chip, the other end of capacitance C6, low pressure
2 pins of poor voltage-stablizer, the other end of capacitance C7, capacitance C8 the other end be all grounded, one end of capacitance C9 and wifi chip
Feeder ear connects, the other end ground connection of capacitance C9.Wherein, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, electricity
The resistance value for hindering R28 is all 1K, the resistance value of resistance R29 is 4.7K, the capacitance of capacitance C6 is 0.1uF, the capacitance of capacitance C7 be 10nF,
The capacitance of capacitance C8 is 0.1uF, the capacitance of capacitance C9 is 0.1uF, NPN triode N4 selects S8050, the pin 2 of wifi chip
Ground connection, the pin 3 of wifi chip are connect with pin 7, and power supply V6 is 5V, and low-dropout regulator selects CAT6219.
As shown in fig. 7, warning circuit includes resistance R30, resistance R31, NPN triode N5, buzzer, resistance R32, resistance
One end of R30 and the 98 foot PE1 connections of STM32F103V, the other end of resistance R30 and one end of resistance R31, NPN triodes N5
Base stage connection, the other end of resistance R31, the collector of NPN triodes N5 be all grounded, the emitter of NPN triodes N5 and bee
The 2 pins connection of ring device, 1 pin anode of buzzer are connect with one end of resistance R32, another termination power V7 of resistance R32.
Wherein, the resistance value of resistance R30 is 1K, the resistance value of resistance R31 is 10K, and the resistance value of resistance R32 is 0, and power supply V7 is 3.3V, NPN tri-
Grade pipe N5 selects S8050.
As shown in figure 8, power-supplying circuit includes USB interface, transient supression diode, diode D6, capacitance C10, electricity
Hinder R33, low-dropout regulator, capacitance C11, capacitance C12, power supply V8,1 pin of USB interface and the one of transient supression diode
End connection, the other end of transient supression diode and the cathode of diode D6, one end of capacitance C10, resistance R33 one end, low
1 pin of pressure difference voltage-stablizer connects, and 5 pins of USB interface, the anode of diode D6 are all grounded, transient supression diode it is another
One end, the cathode of diode D6, one end of capacitance C10, one end of resistance R33, low-dropout regulator 1 pin all with power supply V8
Connection, the other end of resistance R33 and 3 pins of low-dropout regulator connect, and 4 pins of low-dropout regulator are with capacitance C11's
One end connects, the other end of capacitance C10,2 pins of low-dropout regulator, the other end of capacitance C11, capacitance C12 one end all
Ground connection, the other end of capacitance C12 and 5 pins of low-dropout regulator connect, 5 pins and STM32F103V of low-dropout regulator
Feeder ear connection.Wherein, transient supression diode selects SMBJ6.5CA, and the capacitance of capacitance C10 is 0.1uF, resistance R33
Resistance value is 4.7K, and the capacitance of capacitance C11 is 10nF, and the capacitance of capacitance C12 is 0.1uF, and low-dropout regulator selects CAT6219,
Power supply V8 is 5V.
As shown in figure 9, stand-by power supply include battery, capacitance C13, capacitance C14, capacitance C15, diode D7, diode D8,
Power supply V9, one end of capacitance C13, one end of capacitance C14, one end of capacitance C15, the cathode of diode D7, diode D8 it is negative
The anode of 6 pin VBAT connections of pole and STM32F103V, diode D7 is connect with power supply V9, the anode and battery of diode D8
Anode connection, the other end of capacitance C13, the other end of capacitance C14, the other end of capacitance C15, diode D8 cathode all connect
Ground.Wherein, capacitance C13, capacitance C14 capacitance be 10nf, the capacitance of capacitance C15 is 1uF, and power supply V9 is 3.3V.
To sum up, the present invention is passing through volatile organic compounds signal acquisition circuit, formaldehyde signal acquisition circuit, particulate matter
Signal acquisition circuit, Temperature Humidity Sensor can in real time in monitoring of environmental air quality, and pass through wifi circuit transmissions to shifting
Dynamic terminal and the quality that air quality is shown by display screen, allow user to know the quality of air quality in real time, and equipped with report
Alert equipment, when the threshold value more than setting can alarm, so as to remind user in time so that user takes timely measure pair
Air is purified, and provides good environment to the user, and be equipped with stand-by power supply, even if power supply power supply can work if failure
Make, and the system is small, low in energy consumption.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of air quality display system, which is characterized in that including：Single chip machine controlling circuit, volatile organic compounds letter
Number Acquisition Circuit, formaldehyde signal acquisition circuit, particulate matter signal Acquisition Circuit, Temperature Humidity Sensor, wifi circuits, alarm electricity
Road, power-supplying circuit, display screen, stand-by power supply；The volatile organic compounds signal acquisition circuit, the formaldehyde signal
Acquisition Circuit, the particulate matter signal Acquisition Circuit, the Temperature Humidity Sensor, the wifi circuits, the warning circuit, institute
Power-supplying circuit, the display screen, the stand-by power supply is stated all to connect with the single chip machine controlling circuit.
2. a kind of air quality display system according to claim 1, which is characterized in that the single chip machine controlling circuit packet
Include STM32F103V and its peripheral circuit, the 91st foot PB5 and the volatile organic compounds signal acquisition of STM32F103V
The feeder ear of circuit connects, the letter of the 79th foot PC11 and volatile organic compounds signal acquisition circuit of STM32F103V
The connection of number output end；The 97th foot PE0 of STM32F103V is connect with the feeder ear of formaldehyde signal acquisition circuit,
The 24th foot PA1 of STM32F103V is connect with the output end of formaldehyde signal acquisition circuit, and the 54th of STM32F103V the
Foot PB15 is connect with the feeder ear of particulate matter signal Acquisition Circuit, the 96th foot PB9 and temperature and humidity sensing of STM32F103V
The output end of device connects, and the 32nd foot PA7 of STM32F103V is connect with the feeder ear of wifi circuits, and the of STM32F103V
The input terminal of 90 octal PE1 and warning circuit connects, and the output end of power-supplying circuit and the feeder ear of STM32F103V connect
It connects, the first pin PE2 connections of the third pin and STM32F103V of display screen, the 4th pin and STM32F103V of display screen
Second pin PE3 connections, the third pin PE4 connections of the 5th pin and STM32F103V of display screen, the 6th of display screen the
4th pin PE5 connections of pin and STM32F103V, the 7th pin of display screen and the 5th pin PE6 of STM32F103V connect
It connects, the 6th pin VBAT connections of the output end and STM32F103V of stand-by power supply.
3. a kind of air quality display system according to claim 2, which is characterized in that the volatile organic compounds
Signal acquisition circuit includes resistance R1, resistance R2, NPN triode N1, resistance R3, resistance R4, resistance R5, PMOS tube M1, resistance
R6, capacitance C1, capacitance C2, light emitting diode D1, volatile organic matter gas sensor, resistance R7, PNP triode P1, capacitance
C3, PNP triode P2, resistance R8, capacitance C4, power supply V1, power supply V2, power supply V3；One end of resistance R1 and STM32F103V's
91st foot PB5 connections, the other end of resistance R1 are connect with one end of the base stage of NPN triode N1, resistance R2, tri- poles NPN
The emitter of pipe N1 is connect with one end of one end of resistance R3, resistance R4, the other end of resistance R4 and one end of resistance R5, PMOS
The grid of pipe M1 connects, the other end of resistance R3, the other end of resistance R5, PMOS tube M1 source electrode connect with power supply V1, PMOS
The confession of the drain electrode of pipe M1 and one end of resistance R6, one end, volatile organic matter gas sensor of the anode of capacitance C1, capacitance C2
Electric end connection, the other end of resistance R6 are connect with the anode of Light-Emitting Diode D1, the other end of resistance R2, the current collection of NPN pipes N1
Pole, the other end of capacitance C1, the other end of capacitance C2, Light-Emitting Diode D2 cathode be all grounded, volatile organic matter gas pass
The output end of sensor is connect with the collector of one end of resistance R7, PNP pipe P1, and the other end of resistance R7, one end of capacitance C3 are all
Connect with the base stage of PNP pipe P1, the other end of resistance R7, the base stage of PNP pipe P1, capacitance C3 one end all connect with power supply V2,
The other end of capacitance C3 is grounded, and the emitter of PNP pipe P1 is connect with the emitter of PNP pipe P2, base stage and the resistance R8 of PNP pipe P2
One end, one end of capacitance C4, power supply V3 connections, there are power supply V3 connections, resistance R8 in one end of resistance R8, one end of capacitance C4
The other end connect with the collector of PNP pipe P2, the other end of resistance R8, the collector of PNP pipe P2 are all with STM32F103V's
79th foot PC11 connections, the other end ground connection of capacitance C4.
4. a kind of air quality display system according to claim 2, which is characterized in that the formaldehyde signal acquisition circuit
Including resistance R9, resistance R10, NPN triode N2, resistance R11, resistance R12, resistance R13, PMOS tube M2, resistance R14, shine
Diode D2, formaldehyde sensor, resistance R15, capacitance C5, diode D3, power supply V4；One end of resistance R9 and STM32F103V's
97th foot PE0 connections, the other end of resistance R9 are connect with one end of the base stage of NPN triode N2, resistance R10, tri- poles NPN
The emitter of pipe N2 is connect with one end of one end of resistance R11, resistance R12, the other end of resistance R12 and one end of resistance R13,
The grid of PMOS tube M2 connects, and the other end of resistance R13, the other end of resistance R11, the source electrode of PMOS tube M2 and power supply V4 connect
Connect, the drain electrode of PMOS tube M2 is connect with the 15th pin of one end of resistance R14, formaldehyde sensor, the other end of resistance R14 with
Light-Emitting Diode anode connection, the other end of resistance R10, the collector of NPN pipes N2, light emitting diode D2 cathode all connect
Ground, the 14th pin of formaldehyde sensor, the 5th pin of formaldehyde sensor, one end of capacitance C5, diode D3 anode all
Ground connection, the tenth pin of formaldehyde sensor connect with one end of resistance R15, the other end of resistance R15 and the other end of capacitance C5,
The cathode of diode D3 connects, the cathode of diode D3, the other end of capacitance C5, resistance R15 the other end all with
The 24th foot PA1 connections of STM32F103V.
5. a kind of air quality display system according to claim 2, which is characterized in that the particulate matter signal acquisition electricity
Road includes resistance R16, resistance R17, NPN triode N3, resistance R18, resistance R19, resistance R20, PMOS tube M3, resistance R21, hair
Optical diode D4, resistance R22, particulate matter sensors, power supply V5；One end of resistance R16 and the 54th foot of STM32F103V
The other end of PB15 connections, resistance R16 is connect with one end of the base stage of NPN triode N3, resistance R17, the hair of NPN triode N3
Emitter-base bandgap grading is connect with one end of one end of resistance R18, resistance R19, the other end of resistance R19 and one end of resistance R20, PMOS tube M3
Grid connection, the other end of resistance R18, the other end of resistance R20, PMOS tube M3 source electrode connect with power supply V5, PMOS tube
The drain electrode of M3 is connect with one end of one end of resistance R21, resistance R22, the anode of the other end and light emitting diode D4 of resistance R21
Connection, the other end of resistance R17, the collector of NPN triode N3, light emitting diode D4 cathode be all grounded, resistance R22's is another
The feeder ear of one end and particulate matter sensors connects, the third pin of particulate matter sensors and the 53rd foot of STM32F103V
PB14 connections, the 47th foot PB10 connections of the 4th pin and STM32F103V of particulate matter sensors, particulate matter sensors
The 5th pin and STM32F103V the 40th octal PB11 connections, the 6th pin and STM32F103V of particulate matter sensors
The 52nd foot PB13 connections, the 51st foot PB12 connections of the 8th pin and STM32F103V of particulate matter sensors,
The second pin of particulate matter sensors is grounded.
6. a kind of air quality display system according to claim 2, which is characterized in that the wifi circuits include resistance
R23, resistance R24, NPN triode N4, resistance R25, resistance R26, resistance R27, PMOS tube M4, resistance R28, light emitting diode
D5, resistance R29, capacitance C6, the first low-dropout regulator, capacitance C7, capacitance C8, capacitance C9, wifi chip；The one of resistance R23
End is connect with the 32nd foot PA7 of STM32F103V, the other end of resistance R23 and the base stage of NPN triode N4, resistance R24
One end connection, the emitter of NPN triode N4 connect with one end of one end of resistance R25, resistance R26, and resistance R26's is another
End is connect with the grid of one end of resistance R27, PMOS tube M4, the other end of resistance R25, the other end of resistance R27, PMOS tube M4
Source electrode connect with power supply V6, the drain electrode of PMOS tube M4 and one end of resistance R28, one end of capacitance C6, resistance R29 one end,
First pin of the first low-dropout regulator connects, and the other end of resistance R28 is connect with the anode of light emitting diode D5, resistance
The other end of R14, the collector of NPN triode N4, light emitting diode D5 cathode be all grounded, the other end of resistance R29 and
The third pin of one low-dropout regulator connects, and the 4th pin of the first low-dropout regulator is connect with one end of capacitance C7, the
5th pin of one low-dropout regulator is connect with the feeder ear of one end of capacitance C8, wifi chip, the other end of capacitance C6,
The second pin of one low-dropout regulator, the other end of capacitance C7, capacitance C8 the other end be all grounded, one end of capacitance C9 with
The feeder ear of wifi chip connects, the other end ground connection of capacitance C9.
7. a kind of air quality display system according to claim 2, which is characterized in that the warning circuit includes resistance
R30, resistance R31, NPN triode N5, buzzer, resistance R32, one end of resistance R30 and the 90th octal of STM32F103V
The other end of PE1 connections, resistance R30 is connect with the base stage of one end of resistance R31, NPN triodes N5, the other end of resistance R31,
The collector of NPN triodes N5 is all grounded, and the emitter of NPN triodes N5 and the second pin of buzzer connect, buzzer
First pin anode is connect with one end of resistance R32, another termination power V7 of resistance R32.
8. a kind of air quality display system according to claim 2, which is characterized in that the power-supplying circuit includes
USB interface, transient supression diode, diode D6, capacitance C10, resistance R33, the second low-dropout regulator, capacitance C11, capacitance
The first pin of C12, power supply V8, USB interface are connect with one end of transient supression diode, the other end of transient supression diode
It is connect with the first pin of the cathode of diode D6, one end of capacitance C10, one end of resistance R33, the second low-dropout regulator,
5th pin of USB interface, diode D6 anode be all grounded, the other end of transient supression diode, the cathode of diode D6,
One end of capacitance C10, one end of resistance R33, the second low-dropout regulator the first pin all connect with power supply V8, resistance R33
The other end connect with the third pin of the second low-dropout regulator, the 4th pin of the second low-dropout regulator and capacitance C11
One end connection, the other end of capacitance C10, the second pin of the second low-dropout regulator, the other end of capacitance C11, capacitance C12
One end be all grounded, the other end of capacitance C12 is connect with the 5th pin of the second low-dropout regulator, the second low-dropout regulator
The 5th pin and STM32F103V feeder ear connect.
9. a kind of air quality display system according to claim 2, which is characterized in that the stand-by power supply includes electricity
Pond, capacitance C13, capacitance C14, capacitance C15, diode D7, diode D8, power supply V9, one end of capacitance C13, the one of capacitance C14
The 6th pin VBAT connections at end, one end of capacitance C15, the cathode of diode D7, the cathode of diode D8 and STM32F103V,
The anode of diode D7 is connect with power supply V9, and the anode of diode D8 is connect with the anode of battery, the other end, the electricity of capacitance C13
Hold the other end of C14, the other end of capacitance C15, diode D8 cathode be all grounded.
10. a kind of air quality display system according to claim 4, which is characterized in that the formaldehyde sensor is selected
ZE08-CH2O。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444007A (en) * | 2018-11-08 | 2019-03-08 | 金肯职业技术学院 | PM2.5 concentration detection system and its detection method based on STM32 |
| CN112903910A (en) * | 2021-01-15 | 2021-06-04 | 赣州市正途科技有限公司 | Humidity acquisition circuit based on information technology |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5394934A (en) * | 1994-04-15 | 1995-03-07 | American Standard Inc. | Indoor air quality sensor and method |
| CN203672855U (en) * | 2013-10-15 | 2014-06-25 | 何艺 | Portable air quality detecting instrument based on T-shaped channel |
| CN103901172A (en) * | 2014-04-15 | 2014-07-02 | 江苏大学 | Gas quality detector |
| CN104122372A (en) * | 2014-07-25 | 2014-10-29 | 合肥泰蓝电子科技有限公司 | Intelligent household air quality monitor with wireless communication function |
| CN204065751U (en) * | 2014-09-04 | 2014-12-31 | 杭州电子科技大学 | Air purifier control circuit |
| CN204117316U (en) * | 2014-09-29 | 2015-01-21 | 济南职业学院 | Indoor Environment Detection device |
| CN105546738A (en) * | 2015-12-23 | 2016-05-04 | 成都塞普奇科技有限公司 | Multi-circuit composite type intelligent air circulation purification system |
| CN105606314A (en) * | 2015-12-19 | 2016-05-25 | 成都尼奥尔电子科技有限公司 | High-definition display natural gas detector based on alarm drive circuit |
| CN205300632U (en) * | 2015-12-02 | 2016-06-08 | 武汉体育学院 | Room inner environment monitoring device and monitoring system |
| CN205620729U (en) * | 2016-03-31 | 2016-10-05 | 宁夏安华永道安全环保技术咨询有限公司 | High sensitivity's air purifier's intelligent monitoring system |
| CN106019969A (en) * | 2016-07-04 | 2016-10-12 | 吉林大学 | ARM-based intelligent household indoor environment monitoring device |
| CN205644206U (en) * | 2016-03-31 | 2016-10-12 | 成都伯泰科技有限公司 | Formula air purifier intelligent monitoring system is handled to multicircuit |
| CN205717769U (en) * | 2016-03-31 | 2016-11-23 | 成都伯泰科技有限公司 | A kind of intelligent monitor system of multi-functional air purifier |
| CN206095878U (en) * | 2016-10-21 | 2017-04-12 | 西安文理学院 | PM2.5 detection device |
| CN107102584A (en) * | 2017-04-24 | 2017-08-29 | 杭州电子科技大学 | A kind of superfine particulate matter and VOCs field monitoring node |
| CN207197576U (en) * | 2017-09-11 | 2018-04-06 | 西安邮电大学 | Home environment quality monitoring device based on WIFI communications |
-
2018
- 2018-05-17 CN CN201810475190.0A patent/CN108627617A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5394934A (en) * | 1994-04-15 | 1995-03-07 | American Standard Inc. | Indoor air quality sensor and method |
| CN203672855U (en) * | 2013-10-15 | 2014-06-25 | 何艺 | Portable air quality detecting instrument based on T-shaped channel |
| CN103901172A (en) * | 2014-04-15 | 2014-07-02 | 江苏大学 | Gas quality detector |
| CN104122372A (en) * | 2014-07-25 | 2014-10-29 | 合肥泰蓝电子科技有限公司 | Intelligent household air quality monitor with wireless communication function |
| CN204065751U (en) * | 2014-09-04 | 2014-12-31 | 杭州电子科技大学 | Air purifier control circuit |
| CN204117316U (en) * | 2014-09-29 | 2015-01-21 | 济南职业学院 | Indoor Environment Detection device |
| CN205300632U (en) * | 2015-12-02 | 2016-06-08 | 武汉体育学院 | Room inner environment monitoring device and monitoring system |
| CN105606314A (en) * | 2015-12-19 | 2016-05-25 | 成都尼奥尔电子科技有限公司 | High-definition display natural gas detector based on alarm drive circuit |
| CN105546738A (en) * | 2015-12-23 | 2016-05-04 | 成都塞普奇科技有限公司 | Multi-circuit composite type intelligent air circulation purification system |
| CN205620729U (en) * | 2016-03-31 | 2016-10-05 | 宁夏安华永道安全环保技术咨询有限公司 | High sensitivity's air purifier's intelligent monitoring system |
| CN205644206U (en) * | 2016-03-31 | 2016-10-12 | 成都伯泰科技有限公司 | Formula air purifier intelligent monitoring system is handled to multicircuit |
| CN205717769U (en) * | 2016-03-31 | 2016-11-23 | 成都伯泰科技有限公司 | A kind of intelligent monitor system of multi-functional air purifier |
| CN106019969A (en) * | 2016-07-04 | 2016-10-12 | 吉林大学 | ARM-based intelligent household indoor environment monitoring device |
| CN206095878U (en) * | 2016-10-21 | 2017-04-12 | 西安文理学院 | PM2.5 detection device |
| CN107102584A (en) * | 2017-04-24 | 2017-08-29 | 杭州电子科技大学 | A kind of superfine particulate matter and VOCs field monitoring node |
| CN207197576U (en) * | 2017-09-11 | 2018-04-06 | 西安邮电大学 | Home environment quality monitoring device based on WIFI communications |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444007A (en) * | 2018-11-08 | 2019-03-08 | 金肯职业技术学院 | PM2.5 concentration detection system and its detection method based on STM32 |
| CN112903910A (en) * | 2021-01-15 | 2021-06-04 | 赣州市正途科技有限公司 | Humidity acquisition circuit based on information technology |
| CN112903910B (en) * | 2021-01-15 | 2023-01-17 | 信霖微智电子(上海)有限公司 | Humidity acquisition circuit based on information technology |
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