CN106248197A - A kind of environment noise long distance control system - Google Patents
A kind of environment noise long distance control system Download PDFInfo
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- CN106248197A CN106248197A CN201610587099.9A CN201610587099A CN106248197A CN 106248197 A CN106248197 A CN 106248197A CN 201610587099 A CN201610587099 A CN 201610587099A CN 106248197 A CN106248197 A CN 106248197A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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Abstract
The invention discloses a kind of environment noise long distance control system, comprise the data acquisition module for environment noise test, and the data monitoring terminal being remotely connected with data acquisition module, described data acquisition module comprises noise parameter detection module, three-stage amplifier, V/F conversion module, micro controller module, manostat, decoder, LED charactron, power supervisor and power module, the present invention is with 89C51 single-chip microcomputer as core, use the low cost that V/F switch technology is constituted, portable digital display environment noise measuring instrument, working stability of the present invention, functional, cost is relatively low, general civilian needs can be met after verification calibration, can be widely applied to industrial and mining establishment, office, schools etc. need the occasion measuring environment noise and controlling.
Description
Technical field
The present invention relates to a kind of noise detection system, particularly relate to a kind of environment noise long distance control system, belong to environment
Noise Automatic Measurement Technique field.
Background technology
Environment noise monitoring, is that the mankind improve the quality of living, and strengthens an important step of environmental conservation, in each big city
Bustling block and residential block, existing large-scale environment noise display erects street corner.But the most domestic portable noise testing
Instrument, mostly is expensive import special equipment, in addition to the environmental protection such as health, metering specialized department has, it is impossible to as civil goods
Popularize.
At present, the new technique of data acquisition and procession, new method cause its innovation and change directly or indirectly, supervise in real time
(described emulation technology includes sensor, data acquisition, microcomputer chip data, programmable controller PLC, shows for control and emulation technology
Field bus process, Row control, curve and animation shows, automatic trouble diagnosis and report output etc.) data acquisition and procession
Technology brings up to a brand-new level.
Along with fast development and the continuous progress of society of China's economy, the requirement of environmental protection is rooted in the hearts of the people, living environment
Noise problem causes increasing concern the most socially, and noise monitoring becomes the necessary work of environmental administration.But, so far
Till, Environmental Protection in China department detection data exist in a large number in the huge expenditure of the aspects such as management, hardware cost, it is more difficult to realize unified
Management and information sharing so that the efficiency of management is low, equipment investment is expensive, final-period management maintenance cost is high, it is impossible to give full play to
The high efficiency of informationization technology.
Such as Application No. " 201020143967.2 " has the environmental noise measurement instrument of the functions such as GPS location, includes
PDA module, PDA module is circumscribed with digital to analog converter, GPS module, MP3 module, display screen and SD card, and GPS module is circumscribed with GPS
Antenna;Also including microphone, the output signal of microphone accesses digital to analog converter by preamplifier, and PDA module is the most logical
Cross buffer storage to be circumscribed with GPRS or CDMA module, GPRS or CDMA module and be circumscribed with transmitting antenna.This utility model operates
Simply, precision high, GPS function and MP3 function are placed in environmental noise measurement instrument simultaneously, are easy to measurement result is carried out multiple
Core and as environmental law enforcement foundation, the reception that all of information can be arranged to environmental monitoring station or R&D institution by GPRS
Terminal sends, and is easy to subsequent treatment and the statistics of measurement result.
And for example a kind of of Application No. " 201220490809.3 " realizes the system that environment noise is remotely monitored, it include by
Acoustical signal is converted into the noise measuring instrument of analog voltage signal, data collecting card, possesses the on-the-spot end meter of Labview development module
Calculation machine and client computer, the outfan of described noise measuring instrument is connected with the input of data collecting card, described data acquisition
The outfan of truck is connected with the input of on-the-spot end computer, passes through net between described on-the-spot end computer and client computer
Network is bi-directionally connected.This utility model efficiently solves investment maintenance cost height, the management effect that existing noise monitoring system exists
The problems such as rate is low, monitoring information can not be shared, improve work efficiency, reduce hardware and management and maintenance cost, have pole
Strong practicality, can wide popularization and application.
Summary of the invention
The technical problem to be solved is that the deficiency for background technology provides a kind of portable environment noise
Measuring instrument.
The present invention solves above-mentioned technical problem by the following technical solutions:
A kind of environment noise long distance control system, comprises the data acquisition module for environment noise test, and and data acquisition
The data monitoring terminal that collection module remotely connects, described data acquisition module comprises noise parameter detection module, three grades of amplification electricity
Road, V/F conversion module, micro controller module, manostat, decoder, LED charactron, power supervisor and power module, described
Noise parameter detection module passes sequentially through three-stage amplifier, V/F conversion module connects micro controller module, described microcontroller
Module passes sequentially through manostat, decoder connects LED charactron；Described power module connects microcontroller by power supervisor
Module；Wherein, described noise parameter detection module is for being converted into the signal of telecommunication by surrounding enviroment noise；Described three-stage amplifier
For the environment noise being converted into the signal of telecommunication being carried out three grades of processing and amplifying；Described V/F conversion module is for by after processing and amplifying
The signal of telecommunication be converted into frequency signal transmission to micro controller module；Described micro controller module is for according to the frequency letter received
Number output pulse frequency, and then draw noise acoustic pressure；Described manostat is pressed into for the sound drawing micro controller module
Row voltage stabilizing processes；Described decoder sound after processing manostat voltage stabilizing is pressed into row decoding, and then digital by LED
Pipe display in real time；
Described three-stage amplifier comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th electricity
Resistance, the 7th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity,
One diode, the first audion, the second audion, the 3rd audion；Described first resistance is rheostat, described first resistance
Sliding end connects one end of the first electric capacity, and the other end of described first electric capacity connects one end of the second resistance, the 3rd electric capacity respectively
One end, one end of the 3rd resistance, the base stage of the first audion, the other end ground connection of described 3rd resistance, described one or three pole
The emitter stage of pipe connects one end of the 5th resistance, one end of the 4th electric capacity, the other end of described 5th resistance, the 4th electric capacity respectively
The equal ground connection of the other end；The colelctor electrode of described first audion connect respectively the other end of the 3rd electric capacity, one end of the 4th resistance,
The base stage of the second audion；The emitter stage of described second audion connects one end of the 5th electric capacity, another of described 5th electric capacity
End ground connection；The colelctor electrode of described second audion connects the other end of the second resistance, one end of the second electric capacity, the 6th electric capacity respectively
One end, the emitter stage of the 3rd audion；The other end of described second electric capacity connects one end of the 6th resistance, the 7th resistance respectively
One end, the other end of described 7th resistance connects the colelctor electrode of the 3rd audion, one end of the 7th electric capacity respectively, the described 7th
The other end ground connection of electric capacity；The other end of described 6th resistance connects the anode of the first diode, the base of the 3rd audion respectively
Pole；The negative electrode of described first diode connects the other end of the 4th resistance；
Described power supervisor comprises sampling filter circuit, magnetic biasing testing circuit, DSP module, CPLD module, isolation drive electricity
Road, power amplification circuit, controller, interface module and remote communication module；Described sampling filter circuit, magnetic biasing testing circuit,
Power amplification circuit and interface module are connected on the corresponding port of DSP module, and described DSP module is by CPLD module even
Connecing isolated drive circuit, described DSP module connects remote communication module by controller.
As the further preferred scheme of the present invention a kind of environment noise long distance control system, described noise parameter detection mould
Block uses electret transducer.
As the further preferred scheme of the present invention a kind of environment noise long distance control system, described data monitoring terminal bag
Containing single-chip microcomputer and the connected data memory module of difference, data reception module, clock module and data disaply moudle.
As the further preferred scheme of the present invention a kind of environment noise long distance control system, described V/F conversion module
Chip model is LM331.
As the further preferred scheme of the present invention a kind of environment noise long distance control system, described decoder chip-shaped
Number it is 74LS248.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1, the present invention is with 89C51 single-chip microcomputer as core, uses the low cost of V/F switch technology composition, portable digital display ring
Border noise measuring instrument, it is possible to the noise parameter of real-time detection environment and then complete the real-time monitoring to environment noise.
2, working stability of the present invention, functional, cost is relatively low, through verification calibration after can meet general civilian needs, can
It is widely used in the occasion that industrial and mining establishment, office, school etc. need to measure environment noise and control；
3, the present invention uses three-stage amplifier to carry out the pretreatment of data, effectively enhances the degree of accuracy of data；
4, the present invention uses power supervisor to be monitored power supply in real time, effectively optimizes electric power system, enhances
The service life of detection device.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of the present invention；
Fig. 2 is the structure principle chart of data acquisition module of the present invention；
Fig. 3 is data acquisition module three-stage amplifier circuit diagram of the present invention；
Fig. 4 is the structure principle chart of data acquisition module power supervisor of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in further detail:
As it is shown in figure 1, a kind of environment noise long distance control system, comprise the data acquisition module for environment noise test, with
And the data monitoring terminal being remotely connected with data acquisition module.The most described data acquisition module comprises noise parameter
Detection module, three-stage amplifier, V/F conversion module, micro controller module, manostat, decoder, LED charactron, power supply pipe
Reason device and power module, described noise parameter detection module passes sequentially through three-stage amplifier, V/F conversion module connects microcontroller
Device module, described micro controller module passes sequentially through manostat, decoder connects LED charactron；Described power module is by electricity
Source manager connects micro controller module；Wherein, described noise parameter detection module is for being converted into electricity by surrounding enviroment noise
Signal；Described three-stage amplifier is for carrying out three grades of processing and amplifying to the environment noise being converted into the signal of telecommunication；Described V/F converts
Module is for being converted into frequency signal transmission to micro controller module by the signal of telecommunication after processing and amplifying；Described micro controller module
For the frequency signal output pulse frequency according to reception, and then draw noise acoustic pressure；Described manostat is for microcontroller
The sound pressure that module draws carries out voltage stabilizing process；Described decoder sound pressure after processing manostat voltage stabilizing is carried out
Decoding, and then shown in real time by LED charactron；
As it is shown on figure 3, described three-stage amplifier comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th electricity
Resistance, the 6th resistance, the 7th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity,
Seven electric capacity, the first diode, the first audion, the second audion, the 3rd audion；Described first resistance is rheostat, described
The sliding end of the first resistance connects one end of the first electric capacity, and the other end of described first electric capacity connects the one of the second resistance respectively
End, one end of the 3rd electric capacity, one end of the 3rd resistance, the base stage of the first audion, the other end ground connection of described 3rd resistance, institute
The emitter stage stating the first audion connects one end of the 5th resistance, one end of the 4th electric capacity respectively, another of described 5th resistance
End, the equal ground connection of the other end of the 4th electric capacity；The colelctor electrode of described first audion connect respectively the other end of the 3rd electric capacity, the 4th
One end of resistance, the base stage of the second audion；One end of emitter stage connection the 5th electric capacity of described second audion, the described 5th
The other end ground connection of electric capacity；The colelctor electrode of described second audion connect respectively the other end of the second resistance, the one of the second electric capacity
End, one end of the 6th electric capacity, the emitter stage of the 3rd audion；The other end of described second electric capacity connects the one of the 6th resistance respectively
End, one end of the 7th resistance, the other end of described 7th resistance connect respectively the colelctor electrode of the 3rd audion, the one of the 7th electric capacity
End, the other end ground connection of described 7th electric capacity；The other end of described 6th resistance connect respectively the anode of the first diode, the 3rd
The base stage of audion；The negative electrode of described first diode connects the other end of the 4th resistance；
As shown in Figure 4, described power supervisor comprise sampling filter circuit, magnetic biasing testing circuit, DSP module, CPLD module, every
From drive circuit, power amplification circuit, controller, interface module and remote communication module；Described sampling filter circuit, magnetic biasing inspection
Slowdown monitoring circuit, power amplification circuit and interface module are connected on the corresponding port of DSP module, and described DSP module is passed through
CPLD module connects isolated drive circuit, and described DSP module connects remote communication module by controller.
Wherein, described noise parameter detection module uses electret transducer, and described data monitoring terminal comprises single-chip microcomputer
And connected data memory module, data reception module, clock module and data disaply moudle, described V/F change respectively
The chip model of die change block is LM331, and the chip model of described decoder is 74LS248.
The present invention, with 89C51 single-chip microcomputer as core, uses the low cost of V/F switch technology composition, portable digital to show
Environmental noise measurement instrument.Working stability of the present invention, functional, cost is relatively low, can meet general civilian need after verification calibration
Want, can be widely applied to the occasion that industrial and mining establishment, office, school etc. need to measure environment noise and control.
The threshold of audibility of human ear is usually 20 μ Pa, and the threshold of pain is usually 200 Pa, therebetween difference 107 times, so broad acoustic pressure model
Enclose and be difficult to measure very much, and human ear has nonlinear characteristic to the resolution of the change relatively of acoustic pressure.Therefore, conventional acoustic pressure in acoustics
Level Lp reflects the change of acoustic pressure, and the sound pressure level meter of acoustic pressure p is shown as Lp=20lg(p/p0(dB) wherein: datum quantity p0 is 20 μ
Pa.As p=p0, Lp=0dB, and as p=200Pa, Lp=140dB.
Sound pressure level can be measured with sound meter, use 1kHz pure tone input 0.2s to 0.25s or more than 0.5s, the most available
True sound pressure level or average sound pressure level.In view of the human ear sensation of loudness to different frequency, in noise measurement, often take 40phon
The inverse curve of equal loudness contour carries out weighted correction to sound pressure level, i.e. records A sound level by A weighting network, is write as dB(A).Subordinate list is given
Go out the relation between the correcting value of mid-frequency of octave band and A sound level:
Environment noise is converted into the signal of telecommunication through high sensitivity, non-directive electret microphone.Microphone frequency characteristic used exists
In the range of 50～14 000 Hz, unevenness is less than 1.5 dB, can be used for outdoor measurement after adding hurricane globe, rain cover.Put for three grades
Big circuit is made up of amplifier LM324, meticulously adjusts related peripheral component parameters, its amplitude-frequency characteristic can be made close with A weighted curve.
D1, C1, R1 form peak detection network, and its output DC level reflects the size of noise acoustic pressure.
Be made up of voltage/frequency change-over circuit LM331, the frequency signal of output becomes Transistor-Transistor Logic level and gives the P3. of single-chip microcomputer
4 pins, as the count pulse of T0.This change-over circuit is linearly good, and capacity of resisting disturbance is strong, and reference frequency output is 10～10
000 more than Hz, its change ratio reaches 103, is better than common 8 parallel-by-bit A/D converters, the measurement scope of beneficially raising system.
The core of system is AT89C51 single-chip microcomputer, and its instruction system is completely compatible with MCS-51, and band 4kB in sheet
E2PROM, a minimum measurement system can be conveniently constituted.Its P3.5 pin connects what the intervalometer being made up of NE555 exported
100 kHz square waves, interrupt going to control T0 timer counter by T1.From the counting pulse frequency of T0 end input, also reflects and surveyed
The size of acoustic pressure.After software processes, noise sound show value is exported by P1 mouth, drives two 1. again through 74LS248 decoding
8 in high-brightness LED numeral method, suitably control decoder and turn off the light end, make the luminescence in turn of two charactrons realize Dynamic Announce,
Reduce power consumption.
It is understood that unless otherwise defined, all terms used herein (include skill to those skilled in the art of the present technique
Art term and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also
It should be understood that those terms defined in such as general dictionary should be understood that have with in the context of prior art
The consistent meaning of meaning, and unless defined as here, will not explain by idealization or the most formal implication.
Above example is only the technological thought that the present invention is described, it is impossible to limit protection scope of the present invention with this, every
The technological thought proposed according to the present invention, any change done on the basis of technical scheme, each fall within scope
Within.Above in conjunction with accompanying drawing, embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment party
Formula, in the ken that those of ordinary skill in the art are possessed, it is also possible to do on the premise of or else departing from present inventive concept
Go out various change.
Claims (5)
1. an environment noise long distance control system, it is characterised in that: comprise the data acquisition module for environment noise test,
And the data monitoring terminal being remotely connected with data acquisition module, described data acquisition module comprises noise parameter detection mould
Block, three-stage amplifier, V/F conversion module, micro controller module, manostat, decoder, LED charactron, power supervisor and
Power module, described noise parameter detection module passes sequentially through three-stage amplifier, V/F conversion module connects microcontroller mould
Block, described micro controller module passes sequentially through manostat, decoder connects LED charactron；Described power module passes through power supply pipe
Reason device connects micro controller module；Wherein, described noise parameter detection module is for being converted into the signal of telecommunication by surrounding enviroment noise；
Described three-stage amplifier is for carrying out three grades of processing and amplifying to the environment noise being converted into the signal of telecommunication；Described V/F conversion module
For the signal of telecommunication after processing and amplifying is converted into frequency signal transmission to micro controller module；Described micro controller module is used for
According to the frequency signal output pulse frequency received, and then draw noise acoustic pressure；Described manostat is for micro controller module
The sound pressure drawn carries out voltage stabilizing process；Described decoder sound pressure after processing manostat voltage stabilizing is translated
Code, and then shown in real time by LED charactron；
Described three-stage amplifier comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th electricity
Resistance, the 7th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity,
One diode, the first audion, the second audion, the 3rd audion；Described first resistance is rheostat, described first resistance
Sliding end connects one end of the first electric capacity, and the other end of described first electric capacity connects one end of the second resistance, the 3rd electric capacity respectively
One end, one end of the 3rd resistance, the base stage of the first audion, the other end ground connection of described 3rd resistance, described one or three pole
The emitter stage of pipe connects one end of the 5th resistance, one end of the 4th electric capacity, the other end of described 5th resistance, the 4th electric capacity respectively
The equal ground connection of the other end；The colelctor electrode of described first audion connect respectively the other end of the 3rd electric capacity, one end of the 4th resistance,
The base stage of the second audion；The emitter stage of described second audion connects one end of the 5th electric capacity, another of described 5th electric capacity
End ground connection；The colelctor electrode of described second audion connects the other end of the second resistance, one end of the second electric capacity, the 6th electric capacity respectively
One end, the emitter stage of the 3rd audion；The other end of described second electric capacity connects one end of the 6th resistance, the 7th resistance respectively
One end, the other end of described 7th resistance connects the colelctor electrode of the 3rd audion, one end of the 7th electric capacity respectively, the described 7th
The other end ground connection of electric capacity；The other end of described 6th resistance connects the anode of the first diode, the base of the 3rd audion respectively
Pole；The negative electrode of described first diode connects the other end of the 4th resistance；
Described power supervisor comprises sampling filter circuit, magnetic biasing testing circuit, DSP module, CPLD module, isolation drive electricity
Road, power amplification circuit, controller, interface module and remote communication module；Described sampling filter circuit, magnetic biasing testing circuit,
Power amplification circuit and interface module are connected on the corresponding port of DSP module, and described DSP module is by CPLD module even
Connecing isolated drive circuit, described DSP module connects remote communication module by controller.
A kind of environment noise long distance control system the most according to claim 1, it is characterised in that: described noise parameter detects
Module uses electret transducer.
A kind of environment noise long distance control system the most according to claim 1, it is characterised in that: described data monitoring terminal
Comprise single-chip microcomputer and the connected data memory module of difference, data reception module, clock module and data disaply moudle.
A kind of environment noise long distance control system the most according to claim 1, it is characterised in that: described V/F conversion module
Chip model be LM331.
A kind of environment noise long distance control system the most according to claim 1, it is characterised in that: the chip of described decoder
Model is 74LS248.
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| CN201610587099.9A CN106248197A (en) | 2016-07-22 | 2016-07-22 | A kind of environment noise long distance control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610587099.9A CN106248197A (en) | 2016-07-22 | 2016-07-22 | A kind of environment noise long distance control system |
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| CN202420664U (en) * | 2011-12-29 | 2012-09-05 | 东北石油大学 | Automatic ambient noise monitor |
| CN202836740U (en) * | 2012-09-24 | 2013-03-27 | 上海工程技术大学 | System for realizing remote monitoring on environmental noise |
| CN103438991A (en) * | 2013-09-11 | 2013-12-11 | 哈尔滨金大环境工程有限公司 | Test method of environmental noise tester |
| CN105071665A (en) * | 2015-08-28 | 2015-11-18 | 无锡伊佩克科技有限公司 | DSP and CPLD based phase-shift full-bridge switch power supply controller |
| CN105157817A (en) * | 2015-08-28 | 2015-12-16 | 苏州市博得立电源科技有限公司 | Environmental noise measuring instrument based on AC voltage-stabilizing power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183294A (en) * | 2011-03-15 | 2011-09-14 | 浙江大学 | Environment noise wireless real-time monitoring system based on ZigBee technology |
| CN202420664U (en) * | 2011-12-29 | 2012-09-05 | 东北石油大学 | Automatic ambient noise monitor |
| CN102645271A (en) * | 2012-02-24 | 2012-08-22 | 珠海高凌环境科技有限公司 | Intelligent supervision and management system for environmental noise sources |
| CN202836740U (en) * | 2012-09-24 | 2013-03-27 | 上海工程技术大学 | System for realizing remote monitoring on environmental noise |
| CN103438991A (en) * | 2013-09-11 | 2013-12-11 | 哈尔滨金大环境工程有限公司 | Test method of environmental noise tester |
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Application publication date: 20161221 |
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