CN207779996U - Detection of Air Quality equipment - Google Patents
Detection of Air Quality equipment Download PDFInfo
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- CN207779996U CN207779996U CN201820152384.2U CN201820152384U CN207779996U CN 207779996 U CN207779996 U CN 207779996U CN 201820152384 U CN201820152384 U CN 201820152384U CN 207779996 U CN207779996 U CN 207779996U
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Abstract
The disclosure provides a kind of Detection of Air Quality equipment, including：Subelement, including multiple analog signal interfaces are simulated, the simulation subelement is for receiving, handling and sending analog signal；Multiplexer is connect with multiple analog signal interfaces, and the analog-signal transitions for inputting multichannel are the analog signal exported all the way；Analog-to-digital conversion subelement is connect with the multiplexer, and the analog signal for exporting the multiplexer carries out analog-to-digital conversion：And digital subelement, multiple digital signal interfaces are provided with, at least one digital signal interface is connect with the analog-to-digital conversion subelement, and the number subelement is for receiving, handling and sending digital signal.The Detection of Air Quality equipment that the disclosure provides can substantially reduce number of devices by the way that multiplexer is arranged, and circuit economy is improved while ensureing circuit performance.
Description
Technical field
This disclosure relates to Detection of Air Quality technical field more particularly to a kind of Detection of Air Quality equipment.
Background technology
In the 21st century, environmental problem is more and more highlighted with the high speed development of China's economic, into this century
Second since 10 years, this problem has gradually obtained the attention of the whole society.By administering for years, the state of air pollution is
It greatly improves.China's national standard is minimum one grade that developing country is directed in the World Health Organization (WHO) health guidelines, i.e.,
Just in this way, in 3 years of the PM2.5 monitorings for carrying out 74 main cities in the whole country, city highest that can be up to standard is insufficient
20%, there was only 4.1% when minimum, when national annual exceeding standard rate highest reaches 105.7%, and prevention and cure of pollution task is still very heavy.
Center is using prevention and cure of pollution as one of three big assault of fortified positions, it is seen that resolution and dynamics of the country for environmental improvement.
For pollution control, monitoring technology is stood in the breach.Accurate and fine atmospheric monitoring can be instructed to control and be administered
Direction achievees the effect that get twice the result with half the effort.Currently, the most viable scheme for refining atmospheric monitoring is gridding monitoring.Every certain
Distance installs an air quality monitoring equipment, can measure dust particles concentration and polluted gas concentration etc..One city meeting
It is arranged tens of to hundreds of monitoring points.Announced relevant criterion require to the volume of this air quality monitoring equipment, weight,
Precision, power consumption etc. are distinctly claimed.This requires equipment to want to realize higher measurement essence under volume as small as possible
Degree.
However during realizing the disclosure, applicants have discovered that, the Detection of Air Quality in currently available technology is set
The larger, heavier-weight for volume, and a variety of detection devices are integrated in equipment, can not be selected suitably set according to actual conditions
It is standby.
Utility model content
(1) technical problems to be solved
Based on above-mentioned technical problem, the disclosure provides a kind of Detection of Air Quality equipment, to alleviate sky in the prior art
Gas quality detection apparatus volume is larger, heavier-weight, and a variety of detection devices are integrated in equipment, can not be according to actual conditions
The technical issues of selecting suitable equipment.
(2) technical solution
The disclosure provides a kind of Detection of Air Quality equipment, including：Subelement, including multiple analog signal interfaces are simulated,
The simulation subelement is for receiving, handling and sending analog signal；Multiplexer connects with multiple analog signal interfaces
It connects, the analog-signal transitions for inputting multichannel are the analog signal exported all the way；Analog-to-digital conversion subelement, with the multichannel
Multiplexer connects, and the analog signal for exporting the multiplexer carries out analog-to-digital conversion：And digital subelement, setting
There are multiple digital signal interfaces, at least one digital signal interface to be connect with the analog-to-digital conversion subelement, number
Unit is for receiving, handling and sending digital signal.
In some embodiments of the present disclosure, the simulation subelement further includes：Signal-regulated kinase is believed with the simulation
The connection of number interface, for handling analog signal, including：At least one amplifier is connect with the analog signal interface,
For amplified analog signal；And first filter, it is arranged between the amplifier and the multiplexer, for being promoted
Signal-to-noise ratio.
In some embodiments of the present disclosure, the Signal-regulated kinase further includes：Gain circuitry is automatically controlled, and it is described
Amplifier connects, the precision for improving analog signal.
In some embodiments of the present disclosure, the number subelement includes：STM32F407 processors are based on ARM
CROTEX M4 cores, and built-in floating point arithmetic element and digital signal processor；It the multiplexer and described automatically controls
Gain circuitry receives the digital subelement control by iic bus；The digital signal interface includes：Iic bus number is logical
Believe interface, SPI interface, FSMC interfaces, RS232 interface, RS485 interfaces and USART interfaces.
In some embodiments of the present disclosure, the analog-to-digital conversion subelement includes：Second filter, it is multiple with the multichannel
It is connected with device, for reducing circuit noise；And analog-digital converter, it connect, is used for analog signal with the second filter
Be converted to digital signal.
In some embodiments of the present disclosure, the amplifier is trans-impedance amplifier；The first filter is passive low
Bandpass filter；The second filter is three rank active low-pass filters；The analog-digital converter turns for 16 moduluses of single channel
Parallel operation.
In some embodiments of the present disclosure, further include：Power supply subelement, with the simulation subelement and number
Unit connects, for powering for the simulation subelement and the digital subelement comprising：Power supply module is simulated, and it is described
Subelement connection is simulated, including：Switching Power Supply is connect with system power supply, for reducing the system power source voltage；And low pressure
Difference linear constant voltage regulator is connect with the Switching Power Supply, the voltage for further decreasing Switching Power Supply output, and is reduced circuit and made an uproar
Sound is powered for the simulation subelement；Digital power system module is connect with the digital subelement, including：Switching Power Supply, with institute
System power supply connection is stated, for reducing the system power source voltage, for the digital subelement power supply；And external equipment power supply
Module is connect with the digital subelement, for powering for external equipment.
In some embodiments of the present disclosure, further include：Analog signal sensors group, each described analog signal sensing
Device for detecting air quality, and export in the relevant analog signal of air quality to the corresponding analog signal interface；
Digital signal sensors group, each described digital signal sensors export and air quality phase for detecting air quality
In the digital signal of pass to the corresponding digital signal interface；Wireless communication device is connect with the digital signal interface, is used
In air quality data is uploaded to server；And warning device, it connect, is used for air matter with the digital signal interface
Amount data compare with setting value and send out alarm；Wherein, the digital subelement receives the analog signal sensors group and institute
The data of digital signal sensors group output are stated, and by the data conversion at air quality data.
In some embodiments of the present disclosure, wherein：The analog signal sensors group includes：Electrochemical sensor is used
In incuding the concentration of pernicious gas in air, and associated electric signal is exported, including：SO2Sensor, NO2Sensor, CO
Sensor and O3Sensor；PID sensor, the concentration for incuding volatile organic matter in air, and export associated
Electric signal；And voltage sampling sensor, for acquisition system supply voltage and export associated electric signal；The number
Signal transducer group includes：Temperature Humidity Sensor, baroceptor, noise transducer, PM2.5 sensors and meteorological sensor.
In some embodiments of the present disclosure, further include：Ferroelectric memory connect with the digital signal interface, is used for
Storage sensor offset data and system configuration data；NOR FLASH memories connect with the digital signal interface, are used for
It stores program code and needs the system list quickly read；NAND FLASH memories are connect with the digital signal interface,
For storing air quality data；Battery is connect with the digital signal interface, for being digital subelement in system cut-off
Clock unit is powered；Power supply supervisory circuit is connect with the digital signal interface, for monitoring digital subelement operating voltage；
System clock is connect with the digital signal interface, for providing work clock for digital subelement；And low-speed clock, with
The digital signal interface connection, for providing accurate clock signal for digital subelement clock unit.
(3) advantageous effect
It can be seen from the above technical proposal that the Detection of Air Quality equipment that the disclosure provides has the advantages that it
One of or in which a part：
(1) number of devices can be substantially reduced by the way that multiplexer is arranged, electricity is improved while ensureing circuit performance
Road economy；
(2) digital subelement, which uses, is based on ARM CROTEX M4 cores, and at built-in floating point arithmetic element and digital signal
The STM32F407 processors of device are managed, which has outstanding peripheral hardware control ability, and this processing device has powerful float
Point processing and scientific algorithm ability, at the same its abundant communication interface equally meet it is numerous between this system board grade and function module
More communication requirements；
It (3), can be according to field demand flexible configuration function mould by the way that analog signal interface and digital signal interface is arranged
Block realizes economy, quick response to air detection demand；
(4) by the way that wireless communication device is arranged, air quality data can be uploaded to cloud storage platform, realized to entire
The monitoring of multiple equipment and real-time response in detection zone；
(5) while by the way that alarm module is arranged, the quick response to abnormal air quality data can be realized；
(6) by NOR FLASH memories and NAND FLASH memories, data processing on-the-spot, data can be realized
Storage localization, meets stand-alone application demand；
(7) Temperature Humidity Sensor and air pressure transmission of high integration, small package size, iic bus Interface for digital communication are selected
Sensor further reduced the overall volume of the equipment to adapt to the design requirement of equipment micromation.
Description of the drawings
Fig. 1 is each component connection relationship diagram in embodiment of the present disclosure air quality monitoring equipment.
Fig. 2 is that subelement partial enlarged view is simulated in air quality monitoring equipment shown in Fig. 1.
Fig. 3 is Signal-regulated kinase partial enlarged view in simulation subelement shown in Fig. 2.
Fig. 4 is another Signal-regulated kinase partial enlarged view in simulation subelement shown in Fig. 2.
Fig. 5 is subelement partial enlarged view of powering in air quality monitoring equipment shown in Fig. 1.
Fig. 6 is the connection relationship diagram of analog signal sensors group in air quality monitoring equipment shown in Fig. 1.
【Embodiment of the present disclosure main element symbol description in attached drawing】
10- simulates subelement；20- multiplexers；30- analog-to-digital conversion subelements；
40- number subelements；50- power supply subelements；60- analog signal sensors groups；
70- digital signal sensors groups；80- wireless communication devices；90- ferroelectric memorys；
100-NOR FLASH memories；110-NAND FLASH memories；
120- batteries；130- power supply supervisory circuits；140- system clocks；
150- low-speed clocks；
11- Signal-regulated kinases；31- second filters；32- analog-digital converters；
51- simulates power supply module；52- digital power system modules；53- external equipment power supply modules
61- electrochemical sensors；62-PID sensors；63- voltage sampling sensors；
71- Temperature Humidity Sensors；72- baroceptors；73- noise transducers；
74-PM2.5 sensors；75- meteorological sensors；
111- amplifiers；112- first filters；113- automatically controls gain circuitry；
511- Switching Power Supplies (simulation power supply module)；512- low pressure difference linear voltage regulators；
521- Switching Power Supplies (digital power system module).
Specific implementation mode
In the embodiment of the present disclosure, number of devices can be substantially reduced by the way that multiplexer is arranged, is ensureing circuit performance
While improve circuit economy, to improve the integrated level of Detection of Air Quality equipment and reduce volume.
To make the purpose, technical scheme and advantage of the disclosure be more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Fig. 1 is each component connection relationship diagram in embodiment of the present disclosure air quality monitoring equipment.
According to the one side of the embodiment of the present disclosure, as shown in Figure 1, a kind of Detection of Air Quality equipment is provided, including：Mould
Quasi- subelement 10, including multiple analog signal interfaces, the simulation subelement 10 receive, handle and send analog signal；Multichannel is multiple
It with device 20, is connect with multiple analog signal interfaces, the analog-signal transitions that multichannel is inputted are the analog signal exported all the way；
Analog-to-digital conversion subelement 30 is connect with multiplexer 20, and the analog signal that multiplexer 20 is exported carries out modulus and turns
It changes：And digital subelement 40, multiple digital signal interfaces are provided with, at least one digital signal interface and analog-to-digital conversion are single
Member 30 connects, which receives, handles and send digital signal.Analog signal sensors group 60 is connected to simulation
On signaling interface, digital signal sensors group 70 is connected on digital signal interface, by analog-to-digital conversion subelement 30 by mould
Quasi- signal is converted to digital signal, and is delivered at digital subelement 40, and digital subelement 40 receives simulation subelement 10 and conveys
Signal and digital signal interface conveying signal and be uniformly processed, by be arranged multiplexer 20 can significantly subtract
Few number of devices, improves circuit economy while ensureing circuit performance.
Fig. 2 is that subelement partial enlarged view is simulated in air quality monitoring equipment shown in Fig. 1.Fig. 3 is analog submodule shown in Fig. 2
Signal-regulated kinase partial enlarged view in unit.Fig. 4 is that another Signal-regulated kinase is locally put in simulation subelement shown in Fig. 2
Big figure.
In the present embodiment, as shown in figs 2-4, simulation subelement 10 further includes：Signal-regulated kinase 11 is believed with simulation
The connection of number interface, handles analog signal, including：At least one amplifier 111, connect with analog signal interface,
Amplified analog signal；And first filter 112, it is arranged between amplifier 111 and multiplexer 20, promotes noise
Than.
In the present embodiment, as shown in figure 3, Signal-regulated kinase 11 further includes：Gain circuitry 113 is automatically controlled, and is put
Big device 111 connects, and improves the precision of analog signal.Gain circuitry 113 is automatically controlled for ensureing instrument in entire range model
The precision enclosed, realize has enough circuit gains for the small-signal of range low side is convenient for the enough of rear class processing to obtain
The signal of amplitude；Circuit gain is suitably reduced for the high-end strong signal of range to ensure that circuit is operated in the range of linearity and will not
Cause non-linear distortion.It is a closed loop control function to automatically control gain circuitry 113, first by digital subelement 40 for mould
The transformed signal amplitude of number is compared with preset range switching threshold, and meeting switching condition, then digital subelement 40 controls
It automatically controls gain circuitry 113 and adjusts circuit gain；It is adjusted in order to avoid occurring oscillation at range switching threshold, needs ideal
The high and low end of threshold value (G) is respectively set the threshold value (Gh to h) switched from lower range to high range and from high range to lower range
The threshold value (Gh to l) of switching, numerical relation are (Gh to l) ＜ G ＜ (Gh to h), (Gh to l) and (Gh to h)
Between be for avoid oscillation be arranged hysteresis section.
In the present embodiment, digital subelement 40 includes：STM32F407 processors are based on ARM CROTEX M4 cores,
And built-in floating point arithmetic element and digital signal processor, the processor have outstanding peripheral hardware control ability, and this processing
Device has a powerful floating-point operation and scientific algorithm ability, at the same its abundant communication interface equally meet this system board grade and
Numerous communication requirements between function module；It multiplexer 20 and automatically controls gain circuitry 113 number is received by iic bus
Word subelement 40 controls；Digital signal interface includes：Iic bus Interface for digital communication, SPI interface, FSMC interfaces, RS232 connect
Mouth, RS485 interfaces and USART interfaces.
In the present embodiment, analog-to-digital conversion subelement 30 includes：Second filter 31 is connect with multiplexer 20,
Reduce circuit noise；And analog-digital converter 32, it is connect with second filter 31, converts analog signals into digital signal.
In the present embodiment, amplifier 111 is trans-impedance amplifier；First filter 112 is passive low ventilating filter；Second
Filter 31 is three rank active low-pass filters；Analog-digital converter 32 is 16 analog-digital converters of single channel.
Fig. 5 is subelement partial enlarged view of powering in air quality monitoring equipment shown in Fig. 1.As shown in figure 5, further including：
Power supply subelement 50 is connect with simulation subelement 10 and digital subelement 40, for simulation subelement 10 and digital subelement 40
Power supply comprising：Power supply module 51 is simulated, is connect with simulation subelement 10, including：Switching Power Supply 511 connects with system power supply
It connects, reduces system power source voltage；And low pressure difference linear voltage regulator 512, it connect, further decreases with Switching Power Supply 511
The voltage that Switching Power Supply 511 exports, and circuit noise is reduced, it powers for simulation subelement 10；Digital power system module 52, with number
Subelement 40 connects, including：Switching Power Supply 521, connect with system power supply, reduces system power source voltage, for digital subelement
40 power supplies；And external equipment power supply module, it connect with digital subelement 40, powers for external equipment.The confession of system power supply
Piezoelectric voltage ranging from 10.8V to 14.4V can obtain low noise 5V by Switching Power Supply 511 and low pressure difference linear voltage regulator 512
Power supply can obtain 3.3V power supplys by Switching Power Supply 521.
In the present embodiment, as shown in Figure 1, further including：Analog signal sensors group 60, each analog signal sensors
Detect air quality, and export in air quality relevant analog signal to corresponding analog signal interface；Digital signal passes
Sensor group 70, each digital signal sensors detects air quality, and exports with the relevant digital signal of air quality to right
In the digital signal interface answered；Wireless communication device is connect with digital signal interface, and air quality data is uploaded to service
Device；And warning device, it is connect with digital signal interface, air quality data and setting value is compared and send out alarm；Its
In, digital subelement 40 receives the data that analog signal sensors group 60 and digital signal sensors group 70 export, and by data
It is converted into air quality data.By the way that analog signal interface and digital signal interface is arranged, can flexibly be matched according to field demand
Function module (type for pointedly selecting sensor) is set, realizes economy, the quick response to air detection demand.
Fig. 6 is the connection relationship diagram of analog signal sensors group in air quality monitoring equipment shown in Fig. 1.
In the present embodiment, as shown in Figure 6 wherein, analog signal sensors group 60 includes：Electrochemical sensor 61, sense
The concentration of pernicious gas in air is answered, and exports associated electric signal, including：SO2Sensor, NO2Sensor, CO sensings
Device and O3Sensor；PID sensor 62, incudes the concentration of volatile organic matter in air, and exports associated telecommunications
Number；And voltage sampling sensor 63, acquisition system supply voltage simultaneously export associated electric signal；Digital signal senses
Device group 70 includes：Temperature Humidity Sensor 71, baroceptor 72, noise transducer 73, PM2.5 sensors 74 and meteorological sensor
75.Electrochemical sensor 61 is for incuding the concentration of pernicious gas in air and exporting related to harmful gas concentration piecewise linearity
Current signal to rear class Signal-regulated kinase 11；PID sensor 62 is used to incude the total concentration of volatile organic matter in air,
And it exports therewith by the relevant voltage signal of certain functional relation to rear class Signal-regulated kinase 11；Voltage sampling sensor 63 is pressed
The time interval of setting carries out partial pressure sampling to the supply voltage of system power supply, and the voltage signal of acquisition is exported and is believed to rear class
Number conditioning module 11.Electrochemical sensor 61 uses the high precision electro chemical sensor with working electrode and auxiliary electrode, with
Connected Signal-regulated kinase the use of primary 11 have the function of gain-adjusted (automatically controlling gain circuitry 113) across resistance
Amplifier (i.e. amplifier 111) simultaneously uses the active measures for effectively reducing noise gain, secondary passive using extremely low cutoff frequency
Low-pass filter (i.e. first filter 112) is to promote circuit signal-to-noise ratio.PID sensor and system voltage sample circuit use two
For grade fixed gain amplifier (i.e. amplifier 111) to reduce one-stage amplifier circuit gain, flat bandwidth of operation is stablized in acquisition,
Then passive low ventilating filter (i.e. first filter 112) filters out noise, improves channel signal-to-noise ratio.
In the present embodiment, as shown in Figure 1, further including：The ferroelectric memory 90 of iic bus Interface for digital communication, with number
Word signaling interface connects, storage sensor offset data and system configuration data；The NOR FLASH (non-volatile) of SPI interface
Memory 100, connect with digital signal interface, stores program code and needs the system list quickly read；FSMC interfaces
NAND FLASH memories 110, connect with digital signal interface, store air quality data；Battery 120 is believed with number
The connection of number interface is digital subelement clock unit power supply in system cut-off；Power supply supervisory circuit 130, with digital signal
Interface connects, and monitors digital subelement operating voltage；System clock 140, connect with digital signal interface, single for number
Member provides work clock；And low-speed clock, it connect with digital signal interface, is provided precisely for number subelement clock unit
Clock signal.
So far, attached drawing is had been combined the embodiment of the present disclosure is described in detail.It should be noted that in attached drawing or saying
In bright book text, the realization method for not being painted or describing is form known to a person of ordinary skill in the art in technical field, and
It is not described in detail.In addition, the above-mentioned definition to each element and method be not limited in mentioning in embodiment it is various specific
Structure, shape or mode, those of ordinary skill in the art simply can be changed or replaced to it.
According to above description, the Detection of Air Quality equipment that those skilled in the art should provide the embodiment of the present disclosure has
Clear understanding.
In conclusion the Detection of Air Quality equipment that the embodiment of the present disclosure provides can be notable by the way that multiplexer is arranged
Number of devices is reduced, circuit economy is improved while ensureing circuit performance；Believed with number by the way that analog signal interface is arranged
Number interface can realize economy, the quick response to air detection demand according to field demand flexible configuration function module.
It should also be noted that, the direction term mentioned in embodiment, for example, "upper", "lower", "front", "rear", " left side ",
" right side " etc. is only the direction of refer to the attached drawing, not is used for limiting the protection domain of the disclosure.Through attached drawing, identical element by
Same or similar reference numeral indicates.When that understanding of this disclosure may be caused to cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present disclosure
Content.In addition, in the claims, any reference mark between bracket should not be configured to the limit to claim
System.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description of the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：It is i.e. required to protect
The disclosure of shield requires features more more than the feature being expressly recited in each claim.More precisely, as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific implementation mode are expressly incorporated in the specific implementation mode, wherein each claim itself
All as the separate embodiments of the disclosure.
Particular embodiments described above has carried out further in detail the purpose, technical solution and advantageous effect of the disclosure
It describes in detail bright, it should be understood that the foregoing is merely the specific embodiment of the disclosure, is not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (10)
1. a kind of Detection of Air Quality equipment, including：
Subelement, including multiple analog signal interfaces are simulated, which receives, handles and send analog signal；
Multiplexer is connect with multiple analog signal interfaces, and the analog-signal transitions by multichannel input are defeated all the way
The analog signal gone out；
Analog-to-digital conversion subelement is connect with the multiplexer, and the analog signal that the multiplexer is exported carries out
Analog-to-digital conversion：And
Digital subelement is provided with multiple digital signal interfaces, at least one digital signal interface and the analog-to-digital conversion
Subelement connects, which receives, handles and send digital signal.
2. Detection of Air Quality equipment according to claim 1, the simulation subelement further include：
Signal-regulated kinase connect with the analog signal interface, handles analog signal, including：
At least one amplifier is connect, amplified analog signal with the analog signal interface；And
First filter is arranged between the amplifier and the multiplexer, promotes signal-to-noise ratio.
3. Detection of Air Quality equipment according to claim 2, the Signal-regulated kinase further include：Automatically control gain
Circuit is connect with the amplifier, improves the precision of analog signal.
4. Detection of Air Quality equipment according to claim 3, the number subelement include：STM32F407 processors,
Based on ARM CROTEX M4 cores, and built-in floating point arithmetic element and digital signal processor；
The multiplexer and the gain circuitry that automatically controls receive the digital subelement control by iic bus；
The digital signal interface includes：Iic bus Interface for digital communication, SPI interface, FSMC interfaces, RS232 interface, RS485
Interface and USART interfaces.
5. Detection of Air Quality equipment according to claim 2, the analog-to-digital conversion subelement include：
Second filter is connect with the multiplexer, reduces circuit noise；And
Analog-digital converter connect with the second filter, converts analog signals into digital signal.
6. Detection of Air Quality equipment according to claim 5, the amplifier is trans-impedance amplifier；First filtering
Device is passive low ventilating filter；The second filter is three rank active low-pass filters；The analog-digital converter is single channel
16 analog-digital converters.
7. Detection of Air Quality equipment according to claim 1, further includes：Power supply subelement, with the simulation subelement
It is connected with the digital subelement, is the simulation subelement and the digital subelement power supply comprising：
Power supply module is simulated, is connect with the simulation subelement, including：
Switching Power Supply is connect with system power supply, reduces the system power source voltage；And
Low pressure difference linear voltage regulator is connect with the Switching Power Supply, further decreases the voltage of Switching Power Supply output, and is reduced
Circuit noise is powered for the simulation subelement；
Digital power system module is connect with the digital subelement, including：
Switching Power Supply is connect with the system power supply, reduces the system power source voltage, for the digital subelement power supply；
And
External equipment power supply module connect with the digital subelement, powers for external equipment.
8. Detection of Air Quality equipment according to claim 1, further includes：
Analog signal sensors group, each described analog signal sensors detects air quality, and exports and air quality phase
In the analog signal of pass to the corresponding analog signal interface；
Digital signal sensors group, each described digital signal sensors detects air quality, and exports and air quality phase
In the digital signal of pass to the corresponding digital signal interface；
Wireless communication device connect with the digital signal interface, air quality data is uploaded to server；And
Warning device is connect with the digital signal interface, and air quality data and setting value are compared and send out alarm；
Wherein, the digital subelement receives the number of the analog signal sensors group and digital signal sensors group output
According to, and by the data conversion at air quality data.
9. Detection of Air Quality equipment according to claim 8, wherein：
The analog signal sensors group includes：
Electrochemical sensor, incudes the concentration of pernicious gas in air, and exports associated electric signal, including：SO2It passes
Sensor, NO2Sensor, CO sensors and O3Sensor；
PID sensor, incudes the concentration of volatile organic matter in air, and exports associated electric signal；And
Voltage sampling sensor, acquisition system supply voltage simultaneously export associated electric signal；
The digital signal sensors group includes：
Temperature Humidity Sensor, baroceptor, noise transducer, PM2.5 sensors and meteorological sensor.
10. Detection of Air Quality equipment according to claim 8, further includes：
Ferroelectric memory is connect with the digital signal interface, storage sensor offset data and system configuration data；
NOR FLASH memories are connect with the digital signal interface, are stored program code and are needed the system quickly read
List；
NAND FLASH memories are connect with the digital signal interface, store air quality data；
Battery is connect with the digital signal interface, is digital subelement clock unit power supply in system cut-off；
Power supply supervisory circuit is connect with the digital signal interface, monitors digital subelement operating voltage；
System clock is connect with the digital signal interface, and work clock is provided for number subelement；And
Low-speed clock is connect with the digital signal interface, and accurate clock signal is provided for number subelement clock unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152384.2U CN207779996U (en) | 2018-01-29 | 2018-01-29 | Detection of Air Quality equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152384.2U CN207779996U (en) | 2018-01-29 | 2018-01-29 | Detection of Air Quality equipment |
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| Publication Number | Publication Date |
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| CN207779996U true CN207779996U (en) | 2018-08-28 |
Family
ID=63211987
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181435A (en) * | 2018-01-29 | 2018-06-19 | 天津同阳科技发展有限公司 | Detection of Air Quality equipment |
-
2018
- 2018-01-29 CN CN201820152384.2U patent/CN207779996U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181435A (en) * | 2018-01-29 | 2018-06-19 | 天津同阳科技发展有限公司 | Detection of Air Quality equipment |
| CN108181435B (en) * | 2018-01-29 | 2024-05-31 | 天津同阳科技发展有限公司 | Air quality detection equipment |
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