CN202793580U - Online measurement and detection standard device of automatic environmental noise monitoring system - Google Patents
Online measurement and detection standard device of automatic environmental noise monitoring system Download PDFInfo
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- CN202793580U CN202793580U CN 201220457317 CN201220457317U CN202793580U CN 202793580 U CN202793580 U CN 202793580U CN 201220457317 CN201220457317 CN 201220457317 CN 201220457317 U CN201220457317 U CN 201220457317U CN 202793580 U CN202793580 U CN 202793580U
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Abstract
The utility model relates to an online measurement and detection standard device of an automatic environmental noise monitoring system. According to the online measurement and detection standard device, two microphone holes are opened on a muffler pipe, one microphone hole is used for placing a standard microphone, and the other microphone hole is used for placing a microphone to be detected; the microphone to be detected is a part of a monitoring terminal; the standard microphone is connected with a data acquiring terminal of a signal analyzer in a signal mode; a loudspeaker is installed at one end in the muffler pipe and connected with a power amplifier in a signal mode, and the power amplifier is connected with an electrical signal transmitting terminal of a signal generator in a signal mode; a wedge is arranged at the other end in the muffler pipe; the muffler pipe is supported by an external universal wheel; and the signal analyzer is connected with an upper computer in a signal mode. By means of the online measurement and detection standard device, data of the automatic environmental noise monitoring system is accurate, credible and authoritative, and a referential mode is provided for online measurement of the automatic environmental noise monitoring system.
Description
Technical field
The utility model relates to a kind of metering examination criteria device, is specifically related to neighbourhood noise automatic monitoring system on-line metering examination criteria device.
Background technology
At present, neighbourhood noise has become the fourth-largest pollution behind waste gas, waste water, waste residue, around the skyscraper that near the road that strong noise is polluted zone, building operation zone, railway and the airport take place frequently in some enterprises, the motor vehicle throughput is larger and city are built up in a large number, all be accompanied by more serious noise pollution, it has brought very large impact for people's productive life.Along with improving constantly of people's environmental requirement, the complaint that neighbourhood noise disturbs residents is the trend that increases year by year.Measure inherent quality, identification noise source and the vibration source that not only can estimate various machines and delivery vehicle by noise and vibration, thereby carry out targetedly the vibration and noise reducing design, but also can monitor its fatigue conditions, find initial failure and trend, in time get rid of and keep in repair, to avoid the generation of sudden accident.
Environment noise monitoring is the important evidence that pollution from environmental noise is estimated, and also is the important support of environmental pollution law enforcement.Along with the progress of science and technology, carry out the inexorable trend that the neighbourhood noise online auto monitoring becomes China's noise monitoring development.In recent years, some big and medium-sized cities of China are the built environment automatic monitoring system for noise successively: " GB 3096-2008 standard for acoustic environmental quality " according to the up-to-date issue of China stipulated: " national Key Environmental Protection Cities and other cities with good conditionsi and area should arrange the neighbourhood noise automatic monitoring system, carry out the automatic monitor for continuously of monitoring point, different acoustic environments functional areas ".116 monitoring stations have been installed by Beijing in 2008, surpassed Lille, France area (100 monitoring stations), become maximum in the world system.21 stationary monitoring websites and airport noise and the operation monitoring system that the vehicle-mounted mobile monitoring station forms are built up on January 25th, 2008 in the Capital Airport, and this system at home airport still installs first and uses.The Guangzhou has utilized World Bank to finish major urban arterial highway traffic noise automatic monitoring system in 2006.Suzhou City neighbourhood noise automatic monitoring system was checked and accepted by the expert in 2006.Above monitoring system all is to rely on import.The cities such as some other city such as Nanchang, Wuhan, Zhuhai, Shaoguan then adopt domestic equipment equipment to set up the neighbourhood noise automatic monitoring system.Also have a lot of cities in Program Construction neighbourhood noise automatic monitoring system, plan at 2007-2010 such as the Lianyungang of Jiangsu city, the urban district is on the basis of Optimizing, carry out the construction of neighbourhood noise automatic monitoring system, build 20 substations, substitute the monitoring system of former regional environmental noise, Function area noise and road traffic noise.The prospect of the application that more than can find out the neighbourhood noise automatic monitoring system is boundless.
The neighbourhood noise automatic monitoring system is as the main path of noise monitoring, noise law enforcement, noise analysis control, its accuracy is directly connected to the accuracy of the noise data of monitoring with authoritative, and then is directly connected to public credibility and the authoritative power of monitoring department of relevant government.If monitoring system can not meet the requirements, the fields such as its noise monitoring of serving, noise pollution complaint, noise abatement will can be sayed without credibility.This shows, be necessary very much to carry out the research of monitoring system metrology and measurement method and the development of corresponding measurement standard set-up.
Summary of the invention
The purpose of this utility model is for a kind of neighbourhood noise automatic monitoring system on-line metering examination criteria device is provided.
The utility model comprises hush tube, power amplifier, signal generator, signal analyzer, host computer and standard microphone; Have two microphone holes at hush tube, one of them microphone holes is used for placing standard microphone, and another microphone holes is used for placing microphone to be checked; Described microphone to be checked belongs to the part of monitoring terminal; Described standard microphone is connected with the data acquisition end signal of signal analyzer; An end is equipped with loudspeaker in described hush tube, and this loudspeaker is connected with the power amplifier signal, and power amplifier is connected with the electric signal transmitting terminal signal of signal generator; The other end is provided with wedge in described hush tube; Described hush tube is by the universal wheel supporting of outside; Described signal analyzer is connected with the host computer signal.
Hush tube in the utility model has three kinds, and is as follows successively:
Hush tube is the rectangular structure of 800mm * 82mm * 82mm, and pipe thickness is 6mm, and the inboard thick foaming melamine of 10mm of filling all around is cotton, and the outer cover of loudspeaker is fixed by the front end of hinge and hush tube; Two side center drillings of hush tube are as microphone holes.
Hush tube is the rectangular structure of 1500mm * 362mm * 362mm, and pipe thickness is 6mm, and the inboard thick foaming melamine of 50mm of filling all around is cotton, and the outer cover of loudspeaker is fixed by the front end of hinge and hush tube; Open the door of 400mm * 250mm in a side of hush tube, and evenly open two holes as the hole of microphone at the center of door, the position in two holes is 83mm in both sides up and down apart from door.
Hush tube is the rectangular structure of 800mm * 212mm * 212mm, and pipe thickness is 6mm, and the inboard thick foaming melamine of 50mm of filling all around is cotton, and the outer cover of loudspeaker is fixed by the front end of hinge and hush tube; Open two holes as microphone holes at a side center of hush tube, lower wall is 83mm on the two hole centre distance.In this hush tube, also be provided with the multitone calibrating device.
The beneficial effects of the utility model are: filled up the blank of Domestic Environment automatic monitoring system for noise on-line metering calibration method, so that the data of neighbourhood noise automatic monitoring system are more accurate, more credible, more authoritative.For neighbourhood noise automatic monitoring system on-line metering provides a kind of referential mode.
Description of drawings
Fig. 1 is the hardware connection diagram;
Fig. 2 is neighbourhood noise automatic monitoring system on-line metering calibrating process flow diagram;
Fig. 3 is the hardware connection layout of the first muffler pipe structure;
Fig. 4 is the hardware connection layout of the second muffler pipe structure;
Fig. 5 is the hardware connection layout of the third muffler pipe structure.
Embodiment
Below by example, and by reference to the accompanying drawings the utility model is carried out further detailed description.
As shown in Figure 1, the utility model comprises hush tube, power amplifier, signal generator, signal analyzer, host computer and standard microphone; Have two microphone holes at hush tube, one of them microphone holes is used for placing standard microphone, and another microphone holes is used for placing microphone to be checked; Described microphone to be checked belongs to the part of monitoring terminal; Described standard microphone is connected with the data acquisition end signal of signal analyzer; An end is equipped with loudspeaker in described hush tube, and this loudspeaker is connected with the power amplifier signal, and power amplifier is connected with the electric signal transmitting terminal signal of signal generator; The other end is provided with wedge in described hush tube; Described hush tube is by the universal wheel supporting of outside; Described signal analyzer is connected with the host computer signal.
As shown in Figure 2, neighbourhood noise automatic monitoring system on-line metering detection method is: by upper computer software, tested parameter in the neighbourhood noise automatic monitoring system is transferred to A/C frequency meter power, F time weighted shelves; Then the opening signal generator is controlled function, inputs the sinusoidal signal of tested frequency and suitable amplitude, produces a plane wave by power amplifier and loudspeaker in described hush tube; Then read respectively the sound pressure level value of standard microphone and tested microphone, wherein said standard microphone sound pressure level value is without the weighted value, tested microphone sound pressure level value is corresponding A/C weighted value, record the difference of tested microphone sound pressure level value and standard microphone sound pressure level value as the frequency meter weights of this tested frequency, record successively the frequency meter weights of all tested frequencies as a class frequency weighted value; After this, with standard microphone and tested microphone switch; Repeat aforesaid operations, record another class frequency weighted value, at last two class frequency weighted values are got its arithmetic mean as the frequency meter weights of this measurement.
Embodiment one
With reference to Fig. 3, neighbourhood noise automatic monitoring system on-line metering examination criteria device is comprised of PC 1, signal generator 2, power amplifier 3, signal analyzer 4, standard microphone 5 and hush tube 6, and wherein hush tube 6 is comprised of loudspeaker 8, outer cover 7, hinge 9, rigidity body 10,11, No. 1 microphone holes 12 of foaming melamine cotton, No. 2 microphone holes 13, wedge 14, universal wheels 15.Its structure is as described below, loudspeaker 8 is embedded in the outer cover 7, outer cover 7 closely is connected with the rigidity body 10 of wall thickness 6mm by hinge 9, the rigidity body is filled the thick foaming melamine cotton 11 of 10mm around 10 inboards, hush tube 6 bottoms arrange wedge absorber 14, No. 1 microphone holes 12 and No. 2 microphone holes 13 are opened in the center, two sides of hush tube 6, and the bottom of hush tube 6 is supported by universal wheel 15.
During actual calibrating, the signal input part of signal generator 2 is connected to PC 1, the output terminal of signal generator 2 is connected to the input end of power amplifier 3, and the signal output part of power amplifier 3 is connected on the loudspeaker 8.
Then standard microphone 1 is inserted No. 1 microphone holes 12, tested microphone is inserted No. 2 microphone holes 13; Open again the upper computer software of PC 1, tested parameter in the neighbourhood noise automatic monitoring system is transferred to A/C frequency meter power, F time weighted shelves; Then the opening signal generator 2, call PULSE software, input tested frequency and the suitable sinusoidal signal of amplitude, by power amplifier 3 and loudspeaker 8 at plane wave of hush tube 6 interior generations; Read respectively the sound pressure level value of standard microphone 5 and tested microphone, wherein standard microphone 5 sound pressure level values are without the weighted value, tested microphone sound pressure level value is corresponding A/C weighted value, record the difference of tested microphone sound pressure level value and standard microphone 5 sound pressure level values as the frequency meter weights of this tested frequency, record successively the frequency meter weights of 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 10000Hz, 12500Hz, 160000Hz as one group of measured value, as shown in table 1:
First group of measured value of table 1
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| Tested sound pressure level value/dB | 83.4 | 73.7 | 94.7 | 94.4 | 83.7 | 88.1 | 78.7 |
| Standard sound pressure level value/dB | 83.5 | 74.0 | 95.2 | 96.2 | 86.6 | 97.7 | 93.6 |
| Frequency meter weights/dB | -0.1 | -0.3 | -0.5 | -1.8 | -2.9 | -9.6 | -14.9 |
After this, with standard microphone 5 and tested microphone switch, be about to No. 2 microphone holes of standard microphone 5 insertions, tested microphone is inserted No. 1 microphone holes, repeat aforesaid operations, record another class frequency weighted value, as shown in table 2, at last two class frequency weighted values are got its arithmetic mean as the frequency meter weights of this measurement, as shown in table 3:
Second group of measured value of table 2
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| Tested sound pressure level value/dB | 83.3 | 73.8 | 94.8 | 94.0 | 81.8 | 88.0 | 79.0 |
| Standard sound pressure level value/dB | 83.6 | 73.6 | 95.3 | 96.1 | 86.5 | 97.8 | 93.9 |
| Frequency meter weights/dB | -0.3 | 0.2 | -0.5 | -2.1 | -4.7 | -9.8 | -14.9 |
Table 3 frequency meter weights
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| First class frequency weighted value/dB | -0.1 | -0.3 | -0.5 | -1.8 | -2.9 | -9.6 | -14.9 |
| Second class frequency weighted value/dB | -0.3 | 0.2 | -0.5 | -2.1 | -4.7 | -9.8 | -14.9 |
| Frequency meter weights/dB | -0.20 | -0.25 | -0.50 | -1.95 | -3.80 | -9.70 | -14.9 |
Embodiment two
With reference to Fig. 4, neighbourhood noise automatic monitoring system on-line metering examination criteria device is comprised of PC 1, signal generator 2, power amplifier 3, signal analyzer 4, standard microphone 5 and hush tube 6, and wherein hush tube 6 is comprised of loudspeaker 8, outer cover 7, hinge 9, rigidity body 10,11, No. 1 microphone holes 12 of foaming melamine cotton, No. 2 microphone holes 13, wedge 14, universal wheel 15, doors 16.Its structure is as described below, loudspeaker 8 is embedded in the outer cover 7, outer cover 7 closely is connected with the rigidity body 10 of wall thickness 6mm by hinge 9, the rigidity body is filled the thick foaming melamine cotton 11 of 50mm around 10 inboards, hush tube 6 bottoms arrange wedge absorber 14, one side centre position of hush tube 6 is provided with door 16, and No. 1 microphone holes 12 and No. 2 microphone holes 13 are opened in the center of door 16, and the bottom of hush tube 6 is supported by universal wheel 15.
During actual calibrating, the signal input part of signal generator 2 is connected to PC 1, the output terminal of signal generator 2 is connected to the input end of power amplifier 3, and the signal output part of power amplifier 3 is connected on the loudspeaker 8; Then standard microphone 1 is inserted No. 1 microphone holes 12, tested microphone is inserted No. 2 microphone holes 13; Open again the upper computer software of PC 1, tested parameter in the neighbourhood noise automatic monitoring system is transferred to A/C frequency meter power, F time weighted shelves; Then the opening signal generator 2, call PULSE software, input tested frequency and the suitable sinusoidal signal of amplitude, by power amplifier 3 and loudspeaker 8 at plane wave of hush tube 6 interior generations; Read respectively the sound pressure level value of standard microphone 5 and tested microphone, wherein standard microphone 5 sound pressure level values are without the weighted value, tested microphone sound pressure level value is corresponding A/C weighted value, record the difference of tested microphone sound pressure level value and standard microphone 5 sound pressure level values as the frequency meter weights of this tested frequency, record successively the frequency meter weights of 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 10000Hz, 12500Hz, 160000Hz as one group of measured value, as shown in table 4:
First group of measured value of table 4
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| Tested sound pressure level value/dB | 83.2 | 73.3 | 94.8 | 94.2 | 82.6 | 88.6 | 78.9 |
| Standard sound pressure level value/dB | 83.5 | 73.6 | 95.3 | 96.1 | 86.2 | 97.7 | 93.9 |
| Frequency meter weights/dB | -0.3 | -0.3 | -0.5 | -1.9 | -3.6 | -9.1 | -15.0 |
After this, with standard microphone 5 and tested microphone switch, be about to No. 2 microphone holes of standard microphone 5 insertions, tested microphone is inserted No. 1 microphone holes, repeat aforesaid operations, record another class frequency weighted value, as shown in table 5, at last two class frequency weighted values are got its arithmetic mean as the frequency meter weights of this measurement, as shown in table 6:
Second group of measured value of table 5
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| Tested sound pressure level value/dB | 83.4 | 73.3 | 94.9 | 94.3 | 82.6 | 88.9 | 78.6 |
| Standard sound pressure level value/dB | 83.7 | 73.5 | 95.2 | 96.1 | 86.7 | 97.6 | 93.9 |
| Frequency meter weights/dB | -0.3 | -0.2 | -0.3 | -1.8 | -4.1 | -8.7 | -15.3 |
Table 6 frequency meter weights
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| First class frequency weighted value/dB | -0.3 | -0.3 | -0.5 | -1.9 | -3.6 | -9.1 | -15.0 |
| Second class frequency weighted value/dB | -0.3 | -0.2 | -0.3 | -1.8 | -4.1 | -8.7 | -15.3 |
| Frequency meter weights/dB | -0.30 | -0.25 | -0.40 | -1.85 | -3.85 | -8.90 | -15.15 |
When 31.5Hz, 63Hz, 125Hz, 250Hz calibrating, need to use the low frequency coupler or the multitone calibrating device carries out.Door 16 is opened, low frequency coupler or multitone calibrating device are arranged at hush tube 6 inside, produce standard sound pressure level signal by low frequency coupler or multitone calibrating device, and with this tested microphone is carried out the calibrating of frequency meter weights.The result is as shown in table 7:
Table 7 Frequency weighted
| Frequency/Hz | 31.5 | 63 | 125 | 250 |
| Tested sound pressure level value/dB | 91.0 | 93.2 | 93.8 | 94.0 |
| Standard sound pressure level value/dB | 94.0 | 94.0 | 94.0 | 94.0 |
| Frequency meter weights/dB | -3.0 | -0.8 | -0.2 | -0.0 |
Embodiment three
With reference to Fig. 5, neighbourhood noise automatic monitoring system on-line metering examination criteria device is comprised of PC 1, signal generator 2, power amplifier 3, signal analyzer 4, standard microphone 5 and hush tube 6, and wherein hush tube 6 is comprised of loudspeaker 8, outer cover 7, hinge 9, rigidity body 10,11, No. 1 microphone holes 12 of foaming melamine cotton, No. 2 microphone holes 13, wedge 14, universal wheels 15.Its structure is as described below, loudspeaker 8 is embedded in the outer cover 7, outer cover 7 closely is connected with the rigidity body 10 of wall thickness 6mm by hinge 9, the rigidity body is filled the thick foaming melamine cotton 11 of 50mm around 10 inboards, hush tube 6 bottoms arrange wedge absorber 14, No. 1 microphone holes 12 and No. 2 microphone holes 13 are opened in one side center of hush tube 6, and the bottom of hush tube 6 is supported by universal wheel 15.
During actual calibrating, the signal input part of signal generator 2 is connected to PC 1, the output terminal of signal generator 2 is connected to the input end of power amplifier 3, and the signal output part of power amplifier 3 is connected on the loudspeaker 8.
Then standard microphone 1 is inserted No. 1 microphone holes 12, tested microphone is inserted No. 2 microphone holes 13; Open again the upper computer software of PC 1, tested parameter in the neighbourhood noise automatic monitoring system is transferred to A/C frequency meter power, F time weighted shelves; Then the opening signal generator 2, call PULSE software, input tested frequency and the suitable sinusoidal signal of amplitude, by power amplifier 3 and loudspeaker 8 at plane wave of hush tube 6 interior generations; Read respectively the sound pressure level value of standard microphone 5 and tested microphone, wherein standard microphone 5 sound pressure level values are without the weighted value, tested microphone sound pressure level value is corresponding A/C weighted value, record the difference of tested microphone sound pressure level value and standard microphone 5 sound pressure level values as the frequency meter weights of this tested frequency, record successively the frequency meter weights of 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 10000Hz, 12500Hz, 160000Hz as one group of measured value, as shown in table 8:
First group of measured value of table 8
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| Tested sound pressure level value/dB | 83.3 | 73.5 | 95.0 | 94.5 | 82.6 | 88.1 | 78.4 |
| Standard sound pressure level value/dB | 83.5 | 73.8 | 95.3 | 96.1 | 86.0 | 97.8 | 93.5 |
| Frequency meter weights/dB | -0.2 | -0.3 | -0.3 | -1.6 | -3.4 | -9.7 | -15.1 |
After this, with standard microphone 5 and tested microphone switch, be about to No. 2 microphone holes of standard microphone 5 insertions, tested microphone is inserted No. 1 microphone holes, repeat aforesaid operations, record another class frequency weighted value, as shown in table 9, at last two class frequency weighted values are got its arithmetic mean as the frequency meter weights of this measurement, as shown in table 10.
Second group of measured value of table 9
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| Tested sound pressure level value/dB | 83.1 | 73.6 | 94.8 | 94.2 | 82.7 | 88.4 | 78.6 |
| Standard sound pressure level value/dB | 83.7 | 73.4 | 95.3 | 96.0 | 86.6 | 97.8 | 93.8 |
| Frequency meter weights/dB | -0.6 | 0.2 | -0.5 | -1.8 | -3.9 | -9.4 | -15.2 |
Table 10 frequency meter weights
| Frequency/Hz | 500 | 1000 | 2000 | 4000 | 8000 | 12500 | 16000 |
| First class frequency weighted value/dB | -0.2 | -0.3 | -0.3 | -1.6 | -3.4 | -9.7 | -15.1 |
| Second class frequency weighted value/dB | -0.6 | 0.2 | -0.5 | -1.8 | -3.9 | -9.4 | -15.2 |
| Frequency meter weights/dB | -0.40 | -0.25 | -0.40 | -1.70 | -3.65 | -9.55 | -15.15 |
Claims (5)
1. neighbourhood noise automatic monitoring system on-line metering examination criteria device comprises hush tube, power amplifier, signal generator, signal analyzer, host computer and standard microphone; Have two microphone holes at hush tube, one of them microphone holes is used for placing standard microphone, and another microphone holes is used for placing microphone to be checked; Described microphone to be checked belongs to the part of monitoring system; Described standard microphone is connected with the data acquisition end signal of signal analyzer; An end is equipped with loudspeaker in described hush tube, and this loudspeaker is connected with the power amplifier signal, and power amplifier is connected with the electric signal transmitting terminal signal of signal generator; The other end is provided with wedge in described hush tube; Described hush tube is by the universal wheel supporting of outside; Described signal analyzer is connected with the host computer signal.
2. neighbourhood noise automatic monitoring system on-line metering examination criteria device according to claim 1, it is characterized in that: described hush tube is the rectangular structure of 800mm * 82mm * 82mm, pipe thickness is 6mm, it is cotton to fill the thick foaming melamine of 10mm around inboard, and the outer cover of loudspeaker is fixed by the front end of hinge and hush tube; Two side center drillings of hush tube are as microphone holes.
3. neighbourhood noise automatic monitoring system on-line metering examination criteria device according to claim 1, it is characterized in that: described hush tube is the rectangular structure of 1500mm * 362mm * 362mm, pipe thickness is 6mm, it is cotton to fill the thick foaming melamine of 50mm around inboard, and the outer cover of loudspeaker is fixed by the front end of hinge and hush tube; Open the door of 400mm * 250mm in a side of hush tube, and evenly open two holes as the hole of microphone at the center of door, the position in two holes is 83mm in both sides up and down apart from door.
4. neighbourhood noise automatic monitoring system on-line metering examination criteria device according to claim 1, it is characterized in that: described hush tube is the rectangular structure of 800mm * 212mm * 212mm, pipe thickness is 6mm, it is cotton to fill the thick foaming melamine of 50mm around inboard, and the outer cover of loudspeaker is fixed by the front end of hinge and hush tube; Open two holes as microphone holes at a side center of hush tube, lower wall is 83mm on the two hole centre distance.
5. neighbourhood noise automatic monitoring system on-line metering examination criteria device according to claim 3 is characterized in that: also be provided with the multitone calibrating device in this hush tube.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865918A (en) * | 2012-09-10 | 2013-01-09 | 浙江省计量科学研究院 | Measuring detection method and device of automatic environment noise monitoring system |
| CN103438989A (en) * | 2013-09-02 | 2013-12-11 | 浙江省计量科学研究院 | Semi-anechoic room sound field automatic measurement and detection method and standard device |
| CN112539822A (en) * | 2020-12-03 | 2021-03-23 | 浙江大学德清先进技术与产业研究院 | Method and device for evaluating vibration frequency and amplitude of building construction site |
| CN117268534A (en) * | 2023-11-20 | 2023-12-22 | 浙江省计量科学研究院 | Remote intelligent control metering detection device and method for noise measurement analysis instrument |
-
2012
- 2012-09-10 CN CN 201220457317 patent/CN202793580U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865918A (en) * | 2012-09-10 | 2013-01-09 | 浙江省计量科学研究院 | Measuring detection method and device of automatic environment noise monitoring system |
| CN102865918B (en) * | 2012-09-10 | 2014-07-23 | 浙江省计量科学研究院 | Measuring detection method and device of automatic environment noise monitoring system |
| CN103438989A (en) * | 2013-09-02 | 2013-12-11 | 浙江省计量科学研究院 | Semi-anechoic room sound field automatic measurement and detection method and standard device |
| CN112539822A (en) * | 2020-12-03 | 2021-03-23 | 浙江大学德清先进技术与产业研究院 | Method and device for evaluating vibration frequency and amplitude of building construction site |
| CN117268534A (en) * | 2023-11-20 | 2023-12-22 | 浙江省计量科学研究院 | Remote intelligent control metering detection device and method for noise measurement analysis instrument |
| CN117268534B (en) * | 2023-11-20 | 2024-02-23 | 浙江省计量科学研究院 | Remote intelligent control metering detection device and method for noise measurement analysis instrument |
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