CN108709839A - Smog detection in real time and multiple sensing system - Google Patents
Smog detection in real time and multiple sensing system Download PDFInfo
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- CN108709839A CN108709839A CN201810736102.8A CN201810736102A CN108709839A CN 108709839 A CN108709839 A CN 108709839A CN 201810736102 A CN201810736102 A CN 201810736102A CN 108709839 A CN108709839 A CN 108709839A
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- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 239000000779 smoke Substances 0.000 claims abstract description 32
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 20
- 230000010354 integration Effects 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims description 3
- 238000002356 laser light scattering Methods 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 13
- 238000013461 design Methods 0.000 description 11
- 239000000126 substance Substances 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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- Life Sciences & Earth Sciences (AREA)
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- Electromagnetism (AREA)
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Abstract
A kind of smog detection in real time and multiple sensing device further, include mainly arm processor unit, smoke sensor device unit, electronic clock unit, liquid crystal display display unit, voice real-time broadcasting unit, external event trigger element, air quality rank LED light warning unit, realizes the methods of seeing, listen, guarding against triple sensing smokescopes；Device is measured in real time smog, PM10 concentration, real-time time synchronization is carried out using real time clock unit, smog, PM10 concentration values and real-time time carry out real-time display by liquid crystal display, triggering voice real-time broadcasting current environment smog, PM10 concentration values and real-time time can also be carried out by the button of external trigger unit, when smokescope is more than 200mg/ cubic metres, system red LED lamp carries out smog warning.
Description
Technical field
The present invention relates to smog to detect in real time and multiple sensing system.
Invention content
Cigarette fog real-time monitoring provided by the invention and multiple sensing system, can detect smog, the PM10 of environment in real time
Concentration value, real-time clock is accurate, and union liquid crystal display is shown, a key voice broadcast, air quality rank LED light guard against triple sensings
Function is suitable for different groups in one.The smoke detection system have smog, PM10 accuracy of detection it is high, it is cost-effective, work
The advantages that reliable and stable, has very high practical value and promotional value.
The present invention provides a kind of smog detection in real time and multiple sensing device further, includes mainly：One smoke sensor device unit,
It is used to detect Real-time Smoke concentration, PM10 concentration；One electronic clock unit, is used to record real-time time；One external event
Trigger element；It includes a triggering button, is used for real-time broadcasting current environment smog, PM10 concentration values and real-time time；One liquid
Crystalline substance screen display unit, for showing Real-time Smoke concentration, PM10 concentration and real-time time；One voice real-time broadcasting unit, is used for
Voice coding, decoding function can support user to record and play；One air quality rank LED light guards against unit comprising
Three LED light of red, yellow, and green；And a microprocessor, when the microprocessor is with the smoke sensor device unit, the electronics
Clock unit, the external event trigger element, the liquid crystal display display unit, the voice real-time broadcasting unit and the air
Quality scale LED light guards against unit electrical connection, for receiving the smoke sensor device unit, the electronic clock unit, described
Real-time Smoke concentration signal that external event trigger element transmits respectively, real-time time signal, control signal, and realize described micro-
Processor is warned with the liquid crystal display display unit, the voice real-time broadcasting unit and the air quality rank LED light
Guard against unit communication.
Preferably, described to use arm processor unit for processor comprising a processor chips, a power circuit, one
Clock circuit, a reset circuit, a JTAG emulation interface and a SDRAM unit.
Preferably, the smoke sensor device senses it using laser light scattering smog, which can detect cigarette simultaneously
Mistiness degree and PM10 concentration；Smoke sensor device carries out hardware with the serial ports of a chip and connect, and realizes that the chip is sensed with smog
Data communication between device；The operating voltage of smoke sensor device is+5V.Even being produced on the aerial suspended particulate substance of laser irradiation
Raw scattering, while scattering light is collected in a certain special angle, obtain the curve that scattered light intensity changes over time, and then microprocessor
Using algorithm, the particulate matter quantity of different-grain diameter in the equivalent grain size and unit volume of particulate matter is obtained.
Preferably, the real time clock unit includes electronic clock (RTC) chip and comparator electricity that a precision is I2C
Road, electronic clock (RTC) chip that the precision is I2C carry 236 byte battery back SRAM, and electronic clock chip provides
Second, point, when, week, the date, Month And Year information, carry the leap year debugging functions；And the comparison circuit and pass through high-precision, warp
The voltage reference of excess temperature compensation monitors VCC states.Power failure is detected, provides reset output, and cut automatically if necessary
Change to backup battery.
Preferably, the voice real-time broadcasting unit uses the chipspeech of high integration, it can be achieved that Chinese, English
Phonetic synthesis；It is integrated with voice coding, decoding function, user can be supported to record and play.
Preferably, the liquid crystal display display unit is set using TFT liquid crystal displays display unit as the display of fume monitor
It is standby, presentation of information is carried out in real time；This element uses one 3.5 cun, 320 × 240 pixels, 260,000 colors, supports touch function TFT liquid
Crystalline substance screen.
During a kind of smog detection in real time provided by the invention and multiple sensing device further use, the external event touches
Bill member includes a button, and external key is pressed, and generates low level, and external event triggers voice broadcast unit and carries out smokescope
With the report of real-time clock.Air quality rank LED light guard against unit mainly include red, yellow, and green LED light, when air without
LED green lights are lighted when smog, and when air has slight smog, LED amber lights are lighted, and when air has a large amount of smog, LED is red
Colored lights is lighted.
A kind of smog provided by the invention detection in real time and multiple sensing device further, when smoke sensor device unit and an electronics
Clock unit detects Real-time Smoke concentration respectively, real-time PM10 concentration values and real-time time value, external event trigger element can be real
Existing real-time broadcasting current environment smog, PM10 concentration values and real-time time；One liquid crystal display display unit, for showing real-time cigarette
Mistiness degree, PM10 concentration and real-time time；Its air quality rank LED light warning unit can provide visual alarm.Collect liquid crystal display
It has been shown that, a key voice broadcast, air quality rank LED light guard against triple sensing functions in one, are suitable for different groups.The cigarette
Fog detecting system has many advantages, such as that smog, PM10 accuracy of detection are high, cost-effective, stable and reliable in work, has very high practicality
Value and promotional value.
Description of the drawings
Fig. 1 is the smog detection in real time and multiple sensing device further principle framework figure that first embodiment of the invention provides.
Fig. 2 is the processor unit hardware for the smog detection and multiple sensing device further in real time that first embodiment of the invention provides
Functional block diagram；
Fig. 3 is the real time clock unit hardware circuit diagram that first embodiment of the invention provides.
Specific implementation mode
The embodiments described below are only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without creative efforts
Example is applied, shall fall within the protection scope of the present invention.
1 system integrally realizes framework
The smog designed herein detection in real time includes mainly arm processor unit, smoke sensor device with multiple sensing system
Unit, electronic clock unit, liquid crystal display display unit, voice real-time broadcasting unit, external event trigger element, air quality grade
Other LED light guards against unit.It realizes the method for seeing, listen, guarding against triple sensing smokescopes, meets auditorily handicapped, dysopia etc.
The needs of different disadvantaged group.System allomeric function block diagram is as shown in Figure 1.
System is measured in real time smog, PM10 concentration, and real-time time synchronization, cigarette are carried out using real time clock unit
Mist, PM10 concentration values and real-time time carry out real-time display by liquid crystal display, can also pressing by external trigger unit
Key carries out triggering voice real-time broadcasting current environment smog, PM10 concentration values and real-time time, when smokescope is more than 200mg/
When cubic meter, system red LED lamp carries out smog warning.
2 the Hardware Designs
2.1 arm processor unit hardwares design
ARM main control units are using the LM3S9B96 chips of compatible Cortex-M3 and Thumb-2 instruction set, Thumb-2 technologies
With 16 and 32 bit instructions and the advantage deposited, reach the optimum balance of code density and performance, the insertion for low cost declines
Controller application brings 32 high-performance calculation abilities, and kernel has high-performance, low-power consumption, three aspect of low cost significantly
Feature also has outstanding calculated performance and superior system break responding ability.The main body of high-performance of LM3S9B96 chips
Present following characteristic：
1) at high speed：The CPU speeds of service are up to 80-MHz；
2) on piece memory：256KB monocycle flash storages, speed are up to 50MHz；96KB monocycle SRAM；
3) abundant peripheral resources：With piece external equipment interface (EPI), the integrated MAC and PHY of IEEE 1588PTP are supported
10/100 Ethernet, CAN 2.0A/B controller two-way, USB 2.0OTG/Host/Device, support IrDA and ISO 7816
Tri- tunnels UART, I2C module two-way, synchronous serial interface module (SSI) two-way, internal integrated circuit audio (I2S) interface mould
Block, 10 analog-digital converters (ADC) 2 of 1000k times/second of sample rate, analog input channel 16, analog comparator 3, number
Word comparator 16, on piece Voltagre regulator export 8 tunnels, for the tight of low delay for motor and the advanced PWM of energy source use
The fault of emergency stop machine inputs 4, orthogonal coding input (QEI) 2 etc.；Abundant peripheral hardware carries for embedded product hardware design
Convenient hardware interface has been supplied, the system integration is convenient for；
4) system integration：Direct memory access controller (DMA), the on piece precision oscillator of 16-MHz have real-time
The 32 bit timing device 4 (can be used as 8 16) of clock capability, captures/compares/PWM pins (CCP) 8, WatchDog Timer
2, GPIO mouthfuls up to 65.
Arm processor unit hardware design mainly by power circuit, clock circuit, reset circuit, JTAG emulation interface and
SDRAM unit forms, and LM3S9B96 processor unit hardware block diagrams are as shown in Figure 2.
2.2 smoke sensor device unit hardwares design
Smoke sensor device uses laser light scattering principle, is dissipated even being generated on the aerial suspended particulate substance of laser irradiation
It penetrates, while scattering light is collected in a certain special angle, obtain the curve that scattered light intensity changes over time.And then microprocessor utilizes
Based on the algorithm of Michaelis (MIE) theory, the particulate matter quantity of different-grain diameter in the equivalent grain size and unit volume of particulate matter is obtained.
This smoke sensor device model PMS70XX series, for obtaining in unit volume suspended particulate substance number, i.e. particulate matter in air
Concentration, and exported in the form of digital interface.The smoke sensor device can detect smokescope and PM10 concentration simultaneously.Smoke sensor device
Hardware is carried out with the serial ports UART0 of LM3S9B96 chips to connect, and realizes that the data between LM3S9B96 chips and smoke sensor device are logical
Letter.The operating voltage of smoke sensor device is+5V.
2.3 real time clock unit hardware designs
Using superhigh precision I2C electronic clocks (RTC) chip DS3232M, 236 byte battery back SRAM are carried.
The battery input of DS3232M integrated chips, when DS3232M chip main power sources power off can keep exact timing.The RTC offer seconds,
Point, when, week, the date, Month And Year information, carry the leap year debugging functions；And pass through high-precision, the voltage base by temperature-compensating
Accurate and comparator circuit monitors VCC states, detects power failure, provides reset output, and automatically switch to if necessary standby
Part power supply.It is realized using the I2C universal serial bus 1 of LM3S9B96 chips and the serial data interface of DS3232M real-time timepiece chips
Hardware connects, and using power monitoring chip MAX708, monitors the power supply power supply of DS3232M real-time timepiece chips, and realize system
The circuit of power supply and internal battery powers switches, and ensures DS3232M real-time timepiece chips not power down operations.Its hardware circuit
As shown in Figure 3.
2.4 voice real-time broadcasting unit hardwares design
Voice real-time broadcasting unit uses XFS5152CE chips.XFS5152CE is a height of HKUST News company production
The chipspeech of integrated level is, it can be achieved that Chinese, English phonetic synthesis；It is integrated with voice coding, decoding function, can support to use
It is recorded and is played in family；It is innovatively integrated with the speech identifying function of lightweight, supports the identification of 30 order words, and
Support the order word customized demand of user.Hardware development is carried out for the convenience of the user, and XFS5152CE chips provide SPI, I2C, UART
3 kinds of hardware interface modes.LM3S9B96 chips control speech chip by serial ports UART1.
2.5 liquid crystal display display unit hardware designs
Display equipment of the TFT liquid crystal displays unit as fume monitor, carries out presentation of information in real time.This element uses one
3.5 cun, 320 × 240 pixels, 260,000 colors, support touch function TFT liquid crystal displays, using the GPIO pin of LM3S9B96 to TFT liquid
Crystalline substance screen carries out hardware controls.
2.6 external event trigger element hardware designs
External event trigger element realizes that external key is pressed using external key, generates low level, external event triggering
Voice broadcast unit carries out the report of smokescope and real-time clock, and the GPIO pin PJ7 of LM3S9B96 carries out keys interrupt
Detection.
2.7 air quality rank LED light guard against unit hardware design
Air quality rank LED light is mainly wrapped for guarding against current air mass, air quality rank LED light warning unit
Red, yellow, and green LED light is included, when air non smoke, LED green lights are lighted, when air has slight smog, LED amber lights
It lights, when air has a large amount of smog, LED red colored lamps are lighted.By LM3S9B96 GPIO mouths PF3, PF2 and PF1 respectively to it is red,
The state of yellow, green three-color LED light is controlled.
3 system softwares are realized
Software program development carries out on the basis of the hardware of each hardware cell is debugged successfully, the composing software ring of program development
Border selects KEIL4, software program to write language and select C language, to shorten the period of program development, is utilized when software program is write
The API function libraries of CortexM3 family chips, provides fast for programming.After the completion of system software program is write, into
Row system hardware and software joint debugging, until system function is realized.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the appended right of the present invention
It is required that protection domain.
Claims (6)
1. a kind of detection in real time of smog and multiple sensing device further, which is characterized in that it includes mainly：
One smoke sensor device unit is used to detect Real-time Smoke concentration and PM10 concentration；
One electronic clock unit, is used to record real-time time；
One external event trigger element；It includes a triggering button；
One liquid crystal display display unit, for showing Real-time Smoke concentration, PM10 concentration and real-time time；
One voice real-time broadcasting unit can support user to record and play for voice coding, decoding function；
One air quality rank LED light guards against unit comprising three LED light of red, yellow, and green in parallel；
And
One processor, the processor are triggered with the smoke sensor device unit, the electronic clock unit, the external event
Unit, the liquid crystal display display unit, the voice real-time broadcasting unit and air quality rank LED light warning unit electricity
Connection, is transmitted respectively for receiving the smoke sensor device unit, the electronic clock unit, the external event trigger element
Real-time Smoke concentration signal, real-time time signal and control signal, and realize the processor and the liquid crystal screen display
Show unit, the voice real-time broadcasting unit and air quality rank LED light warning unit communication.
2. a kind of smog detection in real time as described in claim 1 and multiple sensing device further, which is characterized in that the processor is adopted
With arm processor unit comprising a processor chips, a power circuit, a clock circuit, a reset circuit, a JTAG are imitative
True interface and a SDRAM unit.
3. smog as claimed in claim 1 or 2 detection in real time and multiple sensing device further, which is characterized in that the smog sensing
Device uses laser light scattering smoke sensor device, the smoke sensor device to detect smokescope and PM10 concentration simultaneously；The smog sensing
Device carries out hardware with the serial ports of a chip and connect, and realizes that chip is communicated with the data between smoke sensor device, the smoke sensor device
Operating voltage be+5V.
4. the smog detection in real time as described in claim 1-3 any one and multiple sensing device further, which is characterized in that the reality
When clock unit include a precision be I2C electronic clock (RTC) chip and a comparator circuit, the precision be I2C electricity
Sub-clock (RTC) chip carry 236 byte battery back SRAM, electronic clock chip provide the second, point, when, week, the date, the moon
With year information；And the comparator circuit and VCC states are monitored by high-precision, the voltage reference by temperature-compensating.
5. the smog detection in real time as described in claim 1-4 any one and multiple sensing device further, which is characterized in that voice is real
When report unit use high integration chipspeech.
6. the smog detection in real time as described in claim 1-5 any one and multiple sensing device further, which is characterized in that liquid crystal display
Display unit uses display equipment of the TFT liquid crystal displays display unit as fume monitor, carries out presentation of information, this element in real time
Using one 3.5 cun, 320 × 240 pixels, 260,000 colors, support touch function TFT liquid crystal displays.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810736102.8A CN108709839A (en) | 2018-07-06 | 2018-07-06 | Smog detection in real time and multiple sensing system |
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| CN201810736102.8A CN108709839A (en) | 2018-07-06 | 2018-07-06 | Smog detection in real time and multiple sensing system |
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