CN110243458A

CN110243458A - Acoustic energy grade parallelepiped measuring surface method detects the method that toilet seat rinses noise

Info

Publication number: CN110243458A
Application number: CN201810481165.3A
Authority: CN
Inventors: 李文杰; 赵淑忠; 王菲; 郝秋伟; 李丽华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-18
Filing date: 2018-05-18
Publication date: 2019-09-17
Anticipated expiration: 2038-05-18
Also published as: CN110243458B

Abstract

The present invention relates to a kind of console mode ceramic pedestal pans to rinse noise detecting method, and detecting step includes: sample installation and debugging；Sound source reference body and parallelepiped measurement surface determine；Sound-pressure-level measurement；Acoustic energy grade calculates and ambient noise, test environment are gentle as condition is corrected；Evaluation of result；Its special feature is that: parallelepiped is measured on surface with cumulative percent acoustic energy grade L using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter_JA(10)The toilet seat of characterization rinses noise and carries out accurate quantitative detection；Present invention provide that continuous N at the parallelepiped measurement each microphone position in surface_eA cumulative percent time integral sound pressure level L ' for rinsing single event in noise emission event_{EAi,q(ST)(10)}(q=1,2 ... N_e；N_e>=5) and the cumulative percent time average sound pressure level L of ambient noise_pAi(B)(10)It is measured, calculates its acoustic energy grade L in normal flush cycle_JA(10), and evaluation of result foundation is provided.The present invention can fill up toilet seat and rinse noise detection technique field blank, the science of implementation method and the comparativity of result, can be that enterprise improves production technology, regulating market order provides detection technique support.

Description

Acoustic energy grade parallelepiped measuring surface method detects the method that toilet seat rinses noise

Technical field

The present invention relates to noise quantitative measuring method, specifically a kind of A weighted equivalent sound level using sound level meter it is fast when Between character of weighting " F " to parallelepiped measurement surface on cumulative percent acoustic energy grade L_JA(10)The console mode ceramics of characterization Toilet seat rinses the method that noise is detected, and belongs to ceramic physicochemical property detection technique field.

Background technique

In recent years, toilet can not be ignored as basic livelihood issues and important civilized windows, construction quality, companion As console mode ceramic pedestal pan is strong in the cumulative year after year of the people's livelihood major fields usage amount such as food and drink, tourism, house and people The enhancing of health environmental consciousness, toilet seat rinses noise monitoring and prevention and control are increasingly subject to the common concern of various circles of society.

Noise generic hydrodynamic noise scope caused by toilet seat flushing process, substantially by the structural vibration of pipeline Noise, the fluid noise of water and Cavitation Noise three parts are constituted, when liquid in pipe medium passes through the pipe such as elbow of pipeline and reduced pipe When road region, pipeline forms mechanical oscillation under exciting force effect；And fluid noise is then originated from the pressure and change in flow of liquid, It is main to go out hydrosphere including noise, water that water flows in toilet seat hydrosphere and fall in the noise issued on toilet seat inner wall, water Making an uproar when the noise and the siphon of blowdown later period that the noise, the water that flow on toilet seat inner wall rotate in toilet seat are destroyed Sound；Wherein fluid noise is that toilet seat rinses the main source of noise, if water flow is too urgent in hydrosphere in flushing process, the attached face of turbulent flow Layer will generate turbulent flow pressure, cause to flow sharp hull vibration and vortex radiated noise.In addition, in the siphon later period since air is filled with brokenly Be broken siphonic effect, cause peripheral part air formed vortex cause pressure jump generate noise, while in flushing process due to The uneven distribution of flow rate of liquid easily forms local decompression, also leads to the formation of Cavitation Noise.

Noise has all characteristics of Acoustic Wave Propagation, and with the increase of propagation distance, sound intensity degree gradually weakens, and encounters obstacle Phenomena such as reflection, diffraction, scattering, absorption, will occur for sound wave when object；The closely related biography of noise testing is wherein rinsed with toilet seat The directive property that characteristic is sound wave is broadcast, i.e., at identical position, since noise source has distinct directive property, is made with sound source The sound intensity that receives on different directions there are certain capacity volume variances.Experiment shows in toilet seat flushing process, cleans The sound intensity is maximum above face, front is taken second place, left and right it is weak it, rear noise intensity it is minimum；It therefore must benefit in actual measurement With the directive property of noise source, measuring point distribution is rationally set.

In recent years, for the law enforcement demand of environmental protection administration, though China's noise measuring standards system obtains tremendous development, and it is existing There is field involved by professional noise testing specification to be only limitted to indoor and outdoor surroundings, vehicle, equipment, electric appliance etc., is not yet related to toilet seat Rinse noise level measurement field.It is found after being investigated extensively to the domestic main product such as Hebei, Guangdong, Henan, due to correlative measurement The missing of examination technology causes toilet seat to rinse noise measuring work and lacks scientific and normalization, and result data comparativity is poor, It is difficult to carry out accurate quantitative analysis verifying.The scarcity of detection method affects popularization, puzzlement of the enterprise to new technology to a certain extent Consumer to the trust of product, restrict the further development of industry.

2015, National Standards Commission issued GB 6952-2015 " sanitary ceramics " national standard, the punching of clear stipulaties toilet seat Wash the Permissible limit L of noise₅₀≤55dB、L₁₀≤ 65dB, but do not specify above-mentioned technical indicator actually and be A weighted sound pressure level still Acoustic power level；Although the 8.6.8 articles of the standard indicates that " toilet seat rinses noise fest method according to GB/T 3768-1996 " sound Learn the simplified method above sound pressure method measurement Sound Power Level of Noise Source reflecting surface using envelope measurement surface " require to carry out ", but national standard GB/T 3768 must establishing criteria GB/T 14367 i.e. " the measurement base of acoustic noise source acoustic power level as Basic of Acoustics standard Plinth standard guide for use " it uses, the scope of application is only limited to the noise testing specification indicated with acoustic power level establishment and provided generally Property principle, the basic demand that all kinds of correlated noise test specifications are formulated under the conditions of varying environment and accuracy is only provided, is not related to The particular technique of noise testing requires and method and step；Because the standard content profundity is abstract, hard to understand, therefore it is difficult to it directly Noise measuring is rinsed applied to toilet seat.

Currently, sanitary ceramics has been put into increased quality major products field, improves correlation quality detecting method standards system and carve Do not allow to delay, it has been trend of the times that research and development ceramic pedestal pan, which rinses noise detection technique,.Therefore, it is mentioned for promotion toilet seat product quality It rises, polishing influences the masses of the people the toilet short slab of quality of the life；Urgently strengthen supporting role of the patented technology to standard development, this The appearance of patent of invention has certain realistic meaning for the upgrading of power-assisted China traditional ceramics industrial transformation.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of fast time weighteds of A weighted equivalent sound level using sound level meter Characteristic " F " measures on surface with cumulative percent acoustic energy grade L parallelepiped_JA(10)The console mode ceramic pedestal pan of characterization The method that noise is detected is rinsed, console mode ceramic pedestal pan is able to solve and rinses noise or even bathroom ceramics water inlet/draining The accurate quantitative test problem of noise.

In order to solve the above technical problems, the technical solution adopted by the present invention is that:

A kind of console mode ceramic pedestal pan rinses the detection method of noise, comprising: (1) sample installation and debugging；(2) sound Source reference body and parallelepiped measurement surface determine；(3) sound-pressure-level measurement；(4) calculating of acoustic energy grade and ambient noise, test Environment and meteorological condition amendment；(5) evaluation；It is characterized in that, using sound level meter A weighted equivalent sound level it is fast Time character of weighting " F " is to cumulative percent acoustic energy grade L_JA(10)The console mode ceramic pedestal pan of characterization rinses noise and carries out Accurate quantitative detection, specific:

In sound-pressure-level measurement:

(1) before being measured to the flushing noise of console mode ceramic pedestal pan sample in semi-anechoic room or reverberation chamber, first root According to GB/T 3767-2016, " acoustic sound pressure method measures proximate freedom field above Sound Power Level of Noise Source harmony energy level reflecting surface Engineering method " in relevant regulations for all kinds of typical installation requirements of console mode ceramic pedestal pan sample determine the different planes of reflection Under the conditions of sound source reference body positioning and calculate its sound source characteristics size d₀；Simultaneous selection and toilet seat rinse noise source reference body Corresponding parallelepiped measures surface and is really sized, and specifies the coordinate of different measurement surface microphone position arrays；

(2) in semi-anechoic room or reverberation chamber, using the normal flush cycle of console mode ceramic pedestal pan as sound signal The time of integration of acquisition；Selected parallelepiped is measured using the slow time character of weighting " S " of the A weighted equivalent sound level of sound level meter Measure the cumulative percent time average sound pressure level L of ambient noise on surface_pAi(B)(10)；Then in 0.35MPa ± 0.05MPa Test static pressure under the conditions of, start flushometer, parallelepiped measurement each microphone position in surface at continuously to seat Closet sample repeats N_eSecondary flushing operation.For different washing water quantity test requests, in normal flush cycle (half punching or Quan Chong), selected parallelepiped is measured using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter measure surface (each flush cycle can be considered an individual noise emission to q-th of flushing noise emission event at upper i-th of microphone position Event；Q=1,2 ... N_e；N_e>=5) single event cumulative percent time integral sound pressure level L '_{EAi,q(ST)(10)}；

In the calculating of acoustic energy grade:

According to related notion and calculation formula in GB/T 3767-2016, in the test static pressure of 0.35MPa ± 0.05MPa Under the conditions of, it take the normal flush cycle of console mode ceramic pedestal pan (half punching or Quan Chong) as the time of integration of sound signal acquisition, The ambient noise A weighted cumulative percent time average sound pressure level that sound level meter is measured on selected parallelepiped measurement surface L_pAi(B)(10)And continuous N at each microphone position_eQ-th event in a flushing noise emission event (q=1,2 ... N_e； N_e>=5) A weighted single event cumulative percent time integral sound pressure level L '_{EAi,q(ST)(10)}As basic data, calculate parallel Hexahedron measures the average value of the A weighted cumulative percent time average sound pressure level of ambient noise on surfaceAnd each biography Continuous N at sound device position_eA toilet seat rinses the A weighted single event cumulative percent time integral acoustic pressure of noise emission event The average value L ' of grade_Ei(ST)(10)；It is derived from continuous N on parallelepiped measurement surface simultaneously_eA toilet seat rinses noise emission The average value of the A weighted single event cumulative percent time integral sound pressure level of eventBy to background noise modification Value K_1A, test Environment Correction Value K_2AAnd meteorological condition correction value C₁、 C₂Influence analyzed, obtain normal flush cycle Continuous N on interior (half punching or Quan Chong) parallelepiped measurement surface_eA toilet seat rinses the A weighted single of noise emission event Event cumulative percent time integral sound pressure levelAnd each console mode ceramics are sat under the conditions of specific static pressure is calculated The A weighted cumulative percent acoustic energy grade L of closet sample wash noise_JA(10)And every group of sample wash noise A weighted accumulative hundred The average value of score acoustic energy gradeThe clearly corresponding data revision of the convention requires and uncertainty of measurement range simultaneously；

In evaluation of result:

Using parallelepiped measurement surface method under the test static pressure of 0.35MPa ± 0.05MPa, normal flush cycle After the flushing noise of interior (half punching or Quan Chong) console mode ceramic pedestal pan sample is tested, when some sample wash noise A is counted Weigh cumulative percent acoustic energy grade L_JA(10)3 sample wash noise A weighted cumulative percent acoustic energy grade L are organized greater than this_JA(10) Arithmetic mean of instantaneous value10% when, need to extract one group of sample again and repeat to test；And calculate two groups of front and back console mode ceramics For toilet seat sample under the conditions of specific static pressure, fast time character of weighting " F " warp using the A weighted equivalent sound level of sound level meter is flat The flushing noise cumulative percent acoustic energy grade L that row hexahedron measurement surface method measures_JA(10))Arithmetic mean of instantaneous valueIf Some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)It is tired greater than this two groups of 6 sample wash noise A weighteds Count percentage acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10%, then abandon it；Remaining toilet seat sample wash noise A is taken to count Weigh cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous valueIt makes an uproar as this group of console mode ceramic pedestal pan sample wash The evaluation index of sound.

The present invention by adopting the above technical scheme, compared with prior art, beneficial effect is:

(1) advanced: in semi-anechoic room or reverberation chamber acoustic enviroment, by applying modern precision instrument --- sound level meter A weighted equivalent sound level fast time character of weighting " F " to parallelepiped measurement surface microphone position array flushing make an uproar Sound is measured, and is modified to ambient noise.It is a transient process in view of the starting of toilet seat rinse mode, taking can be just Really reflect it on the A weighted cumulative percent acoustic energy grade L of human psychological and physiological influence_JA(10)As subjective assessment parameter；Inspection Survey technology has certain advance, has reached the modernization that ceramic pedestal pan rinses noise measuring.

(2) scientific: in following GB/T 3767-2016 on the basis of acoustics versatility directive/guide, to be based on liquid unstable state Flowing causes the noncontinuity feature of noise, mechanism of production and the route of transmission of noise is rinsed for toilet seat, according to envelope sound Source test philosophy establishes parallelepiped measurement surface acoustical model；Comprehensive analysis background noise, environment and meteorological condition etc. because Influence of the element to testing result, and with A weighted cumulative percent under the conditions of civil buildings feedwater piping general operations pressure testing Acoustic energy grade L_JA(10)Measurement result as noise rating index is rinsed, meet toilet seat real use state and consumer and close Focus is infused, the science of detection method is improved.

(3) normative: test result to be evaluated according to national requirements for environmental protection and target level of product quality, related instrument is set Standby, sound source reference body, measurement surface, calculation formula etc. technical requirements are referring to China's Basic of Acoustics standard GB/T 3767- Respective specified in 2016；And the structural diagrams of applicable reference body and parallelepiped measurement surface are provided, it specifies simultaneously The series of key techniques contents such as sample installation, measuring point coordinate, measuring process, calculation formula, uncertainty, evaluation of result, energy Enough realize that console mode ceramic pedestal pan rinses the quantification of noise measuring result.

(4) perspective: currently, the detection technique of related toilet seat flushing noise is relatively easy unilateral both at home and abroad, to lack phase Principles of Acoustics basis is closed, the applicability and accuracy of test method are poor；This patent method foundation adopts mark ISO 3744:2010's " acoustic sound pressure method measures the work of proximate freedom field above Sound Power Level of Noise Source harmony energy level reflecting surface to GB/T 3767-2016 Journey method " in associated acoustic directive/guide and the measuring principle in relation to A weighted acoustic energy grade, measurement surface be applicable in, calculation formula science, survey The class of accuracy for determining result is 2 grades, is technically had certain perspective.

(5) accuracy: using high degree of automation, technologically advanced maturation sound level meter as test equipment, using three The evaluation result of ceramic pedestal pan sample determines conclusion as final；It chooses in normal flush cycle, using the A weighted of sound level meter The fast time character of weighting " F " of equivalent sound level measures the cumulative percent sound energy for rinsing noise through parallelepiped measurement surface method Magnitude L_JA(10)As correlated results evaluation index；And the influence factors such as ambient noise, test environment, meteorological condition are repaired Just, uncertainty cumulative effect in measurement process is determined comprehensively, can effectively avoid measurement error.

(6) innovative: the influence of noise to be rinsed to toilet seat for feed pressure, according to each floor gap water supply of civil buildings Noise testing demand under the conditions of pipeline general operations pressure limit and different washing water quantities；(half punching is chosen in normal flush cycle Or Quan Chong) parallelepiped measurement surface microphone position array rinse noise A weighted cumulative percent acoustic energy grade L_JA(10) Evaluation of result index as each toilet seat sample；And clear sample mounting condition and cistern fittings commissioning requirements, pass through limit Ambient noise and rinse the measurement frequency and data processing of noise at fixed each measuring point coordinate, improve testing result accuracy and Representativeness can effectively fill up the blank of presently relevant the field of test technology.

(7) operability: sound level meter is cheap, is widely used, the installation of sample as defined in the method for the present invention, debugging and one Serial experiment is easy to operation；Related test parameter, measurement surface, measuring point array, testing procedure, calculation formula, at data Reason, describing clearly for technology contents of evaluation criterion etc. and it is specific, correlation graph illustrates intuitive and accurate, is easy to this patent The understanding and grasp of method may advantageously facilitate the transfer conversion of achievement so that patent working process has stronger operability And popularization and application.

(8) universality: the method for the present invention has stronger practicability, is conducive to expand in inspection, learns, grinds, produces pushing away for all circles Wide application；Be conducive to that ceramic pedestal pan is supported to rinse noise detection technique realization generalization, it can be to the flushing of squatting pan, urinal Other sanitary wares such as noise and wash basin, bidet, inlet valve and tank for excrement pan accessory are produced to/drainage pipeline etc. Generated noise and its detection technique research provide reference to product in use.

Further, preferred embodiment of the invention is:

The sample installation and debugging, carry out in the steps below:

(1) 3 types, specification, the identical porcelain of size or the Shi ceramic console mode for producing same producer, same batch For toilet seat sample as one group, internal structure is that punching falls formula or hydrocone type；

(2) it is equipped with and meets flush box and cistern fittings that specified water consumption requires, and be equipped with the ring for being suitble to size, lid Plate and flange (are the toilet seat sample of heel row formula for drainage pattern, using the suitable flange of size by its drainage pattern by rear Row's formula is adjusted to lower-discharging type), water system mark is tested according to water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015 Standardization debugging routine debugs the cistern water supply system of toilet seat sample to be measured；The working water level of flush box can expire The normal flushing process of foot needs, and nominal water consumption is equal with actual used water amount；

(3) referring to the installation instructions of factory be console mode ceramic pedestal pan sample to be measured assemble corresponding flushometer and Water inlet pipe is attached seal tightness test according to the 8.11st article of regulation in GB 6952-2015, i.e., in the test water of 0.1MPa Under pressure condition, 15min, connecting line ne-leakage are continuously kept, it is ensured that toilet seat and flushometer have good entirety close Feng Xing；

(4) for installation not close to the console mode ceramic pedestal pan sample of any sidewalls when, if in semi-anechoic room It is tested, sample to be tested directly can be placed in ground center and is ensured in the acoustic enviroment of proximate freedom field above reflecting surface Its pre-washing function is normal.If tested in rigid plane room or dedicated reverberation chamber, sample is placed on ground and is made It is not less than 1.0m with any one side at a distance between the walls, while ensuring that pre-washing function is normal；

It (5), can be in rigid plane room or dedicated reverberation chamber for the console mode ceramic pedestal pan sample close to wall installation In tested, sample to be tested is placed on ground, distance between its back side and close perpendicular walls reflecting surface is made 15cm ± 5cm, and ensure the distance between sample and its indoor excess-three sidewalls not less than 1.5m；Guarantee pre-washing function simultaneously Normally；

It (6), can be in rigid plane room or dedicated reverberation chamber for the console mode ceramic pedestal pan sample close to corner installation In tested, sample to be tested is placed on ground, its back side and side and two close perpendicular walls reflectings surface are made Between distance be 15cm ± 5cm, and ensure that sample and indoor in addition two sides are not less than 1.5m at a distance between the walls；Guarantee simultaneously Pre-washing function is normal.

The determination on the sound source reference body and parallelepiped measurement surface, carries out in the steps below:

(1) toilet seat rinse noise source reference body shape and size determination: analysis console mode ceramic pedestal pan and its On the basis of flushometer Each part is to noise radiation overall contribution is rinsed, according to GB/T 3767-2016 " acoustic sound pressure Method measures the engineering method of proximate freedom field above Sound Power Level of Noise Source harmony energy level reflecting surface " in the 7.1st article of relevant regulations, It is set using positions and dimensions of the three-dimensional coordinate system to sound source reference body；For different console mode ceramic pedestal pan samples Product mounting means, the mirror image institute when being positioned to sound source reference body, with sound source reference body and its in neighboring reflection plane The center of cabinet is formed as coordinate origin O, trunnion axis x and y are parallel with the length of reference body and width respectively.With toilet seat sample Length l of the horizontal length as sound source reference body₁, using the horizontal width of flush box as the width l of sound source reference body₂, with water tank Working water bit line to ground height l of the vertical range as sound source reference body₃；Corresponding to different test environment conditions, sound The characteristic size d of source reference body₀Respectively [(l₁/2)²+(l₂/2)²+l₃ ²]^1/2(plane of reflection), [l₁ ²+(l₂/2)²+l₃ ² ]^1/2(two planes of reflection) and [l₁ ²+l₂ ²+l₃ ²]^1/2(three planes of reflection), unit are rice (m)；

(2) determination of parallelepiped measurement surface and its microphone position array: according to standard GB/T 3767-2016 In the 7.2.4 articles and the 8.1.2 articles relevant regulations, test used by parallelepiped measurement surface have with sound source reference body The coordinate origin and face shaping of same orientation, i.e. area are S, envelope toilet seat to be measured rinses noise source, each side is parallel to base The side of quasi- body and an imaginary parallelepiped for being d with reference body distance, wherein d >=1.0m.

Not close to any sidewalls, parallelepiped measurement when if console mode ceramic pedestal pan sample to be measured is installed The microphone position array co-ordinates on surface are shown in Table 1, and area S is calculated according to formula (1):

S=4 (ab+bc+ca) ... ... ... ... ... ... ... ... ... (1)

In formula: a=0.5l₁+ d, b=0.5l₂+ d, c=l₃+d；Wherein l₁、l₂、l₃The respectively length and width of sound source reference body And height；Measure distance d=1.0m.

1 toilet seat sample of table is located at the parallelepiped on a plane of reflection and measures surface microphone position array co-ordinates

Microphone position

1

2

3

4

5

6

7

8

9

x

a

0

- a

0

a

- a

a

0

y

0

b

0

- b

b

- b

0

z

0.5c

c

If console mode ceramic pedestal pan sample to be measured is installed close to wall, parallelepiped measures the microphone on surface Position array co-ordinates are shown in Table 2, and area S is calculated according to formula (2):

S=2 (2ab+bc+2ca) ... ... ... ... ... ... ... ... ... (2)

In formula: a=0.5l₁+ 0.5d, b=0.5l₂+ d, c=l₃+d；Wherein l₁、l₂、l₃The respectively length of sound source reference body It is (distance from wall to front end face), wide and high；Measure distance d=1.0m.

2 toilet seat sample of table is located at the parallelepiped on two planes of reflection and measures surface microphone position array co-ordinates

Microphone position

1

2

3

4

5

6

x

2a

a

2a

a

y

0

b

- b

b

-b

0

z

0.5c

c

If console mode ceramic pedestal pan sample to be measured is installed close to corner, parallelepiped measures the microphone on surface Position array co-ordinates are shown in Table 3, and area S is calculated according to formula (3):

S=2 (2ab+bc+ca) ... ... ... ... ... ... ... ... ... (3)

In formula: a=0.5l₁+ 0.5d, b=0.5l₂+ 0.5d, c=l₃+d；Wherein l₁、l₂、l₃Respectively sound source reference body Length and width and height (the long l of reference body₁With wide l₂, i.e., from two face walls to the distance of corresponding reference body opposite face)；Measure distance d= 1.0m。

3 toilet seat sample of table is located at the parallelepiped on three planes of reflection and measures surface microphone position array co-ordinates

Microphone position	1	2	3	4
					x	2a	a	2a	a
y	-b	-2b	- 2b	-b
					z	0.5c	0.5c	c	c

The sound-pressure-level measurement carries out in the steps below:

(1) in addition to retaining the necessary experimental apparatus such as 1 toilet seat sample and tripod to be measured, by remaining article in test cabinet It all moves away from, must not have supernumerary on the scene in test cabinet；Experimental implementation person must not dress the clothing of obvious sound absorption characteristics；Make With through assay approval thermometer and barometer to testing indoor air themperature and atmospheric pressure is measured and records；

(2) it before being rinsed noise testing to console mode ceramic pedestal pan sample, is measured first with straight steel ruler and square Its size l₁、l₂、l₃And it records；According to the quantity of the plane of reflection involved by sample mounting means, determine that the space of sound source reference body is fixed Position simultaneously calculates its characteristic size d₀；The applicable parallelepiped envelope sound source measurement surface of selection and calculate its specific dimensions a, b, c；According to the microphone position array on selected parallelepiped measurement surface, calculates each measuring point coordinate and record；

(3) 1 type instrument requirements in GB/T 3785.1-2010 should be met by measuring sound level meter used, and the re-testing periods are no more than 2 Year；Filter meets 1 type instrument requirements in IEC 61260:1995, and calibration cycle is no more than 1 year.Before each on-test and tie Shu Hou, using meeting one of the acoustic calibrator of 1 grade of accuracy requirement in GB/T 15173 within the scope of sound level meter measurement frequency It is verified in a or multiple frequencies；It reads difference and is not more than 0.5dB；

(4) it can be semi-anechoic room or reverberation chamber that toilet seat, which rinses noise test cabinet, it is ensured that hold in test cabinet using space Product meets ceramic pedestal pan sample installation requirement to be measured, and has needed for pre-washing function to/drainage condition, the static pressure of test water Power is controllable；Wherein background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing the sound of proximate freedom field above reflecting surface Condition, re-testing periods are no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is between 5s~6s range It is interior；

(5) in the semi-anechoic room or reverberation chamber for meeting above-mentioned requirements, the biography on surface is measured according to selected parallelepiped Sound device position array, positions each measuring point coordinate；Tripod is moved at point position and will be provided with related sound simultaneously The sound level meter for learning performance is placed in its top holder, it is ensured that sound wave incident angle is identical when the orientation of microphone is calibrated with it and vertical refers to To measurement surface；

(6) when integral using a complete normal flush cycle (half punching or Quan Chong) as the acquisition of sound level meter sound signal Between, if toilet seat sample flush cycle to be measured is less than 20s, the time of integration is in terms of 20s；It is equivalent using the A weighted of sound level meter The cumulative percent time that the fast time character of weighting " F " of sound level measures ambient noise on selected parallelepiped measurement surface is flat Equal sound pressure level L_pAi(B)(10)And it records；It is continuously measured at each microphone position 3 times, takes its arithmetic mean of instantaneous value as the position Locate the sound-pressure-level measurement value of ambient noise.If the difference of sound pressure level measured by 3 times is greater than 0.5dB at each position, survey again It measures and records；

(7) test static pressure is adjusted to 0.35MPa ± 0.05MPa, and water tank is adjusted to its working water bit line mark, punching Water makes closet sample water seal be filled with water to ordinary water level；Then, closet cover board is lifted, is required according to water consumption to be measured, according to just Normal mode starts flushometer and timing；Believe using a complete normal flush cycle (half punching or Quan Chong) as sound level meter audio frequency Number acquisition the time of integration, if the flush cycle of toilet seat sample be less than 20s, the time of integration is in terms of 20s.Parallel six N continuously is repeated to toilet seat sample at each microphone position in face bulk measurement surface_eSecondary flushing operation is counted using the A of sound level meter The fast time character of weighting " F " of power equivalent sound level measures q-th of flushing noise emission event (each flushing in corresponding position respectively Circulation can be considered an individual noise emission event；Q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent Time integral sound pressure level L '_{EAi,q(ST)(10)}And it records；Static pressure, water consumption and the flush cycle washed by water every time are recorded simultaneously.

The acoustic energy grade calculates, and carries out in the steps below:

(1) calculation formula selects: referring to relevant regulations in GB/T 3767-2016, the calculating of test parameter involved by this patent Formula is as follows:

If △ L_EA(10)> 15dB, then without carrying out background noise modification；If 6dB≤△ L_EA(10)≤ 15dB, then according to Formula (8) is modified.

K_1A=-10lg (1-10^{-0.1△LpA(10)})………………………………………………………(8)

K_2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... (9)

Work as K_2AWhen≤4dB, the measurement done according to this patent method is effective；The wherein suction of semi-anechoic room and reverberation chamber room VU meter calculation respectively refers to formula (10) and (11) are as follows:

A=α S_ν………………………………………………………………………(10)

A=0.16V/T_n……………………………………………………………………(11)

L_{JA ref,atm(10)}=L_JA(10)+C₁+C₂……………………………………………(16)

In formula:

L′_Ei(ST)(10)--- in normal flush cycle, the N at parallelepiped measurement i-th of surface microphone position_eIt is secondary The toilet seat measured rinses noise A weighted single event cumulative percent time integral sound pressure level mean value, and unit is decibel (dB)；

N_e--- single toilet seat rinses noise emission event at the parallelepiped measurement each microphone position in surface Pendulous frequency (N_e≥5)；

L′_{EAi,q(ST)(10)}--- in normal flush cycle, surveyed at parallelepiped measurement i-th of surface microphone position Toilet seat rinse q-th of event of noise (q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time product Divide sound pressure level, unit is decibel (dB)；

--- in normal flush cycle, the toilet seat measured on parallelepiped measurement surface rinses noise The average value of A weighted single event cumulative percent time integral sound pressure level, unit are decibel (dB)；

N_M--- parallelepiped measures surface microphone position number；

--- in normal flush cycle, the ambient noise A weighted measured on parallelepiped measurement surface is tired The average value of percentage time average sound pressure level is counted, unit is decibel (dB)；

L_pAi(B)(10)--- in normal flush cycle, measured at parallelepiped measurement i-th of surface microphone position Ambient noise A weighted cumulative percent time average sound pressure level, unit be decibel (dB)；

K_1A--- background noise modification value；

K_2A--- test Environment Correction Value；

S --- parallelepiped measures the area on surface, and unit is square metre (m²)；

A --- in test cabinet at 1kHz frequency room equivalent absorption area, unit be square metre (m²)；

The A weighted average sound absorption coefficient of α --- test cabinet room surface, numberical range is referring to GB/T 3767-2016 Middle Table A .1；

S_ν--- the gross area (wall, floor, ceiling) of test cabinet room boundaries, unit are square metre (m²)；

V --- test room volume, unit are cubic meter (m³)；

T_n--- the A weighted measured or frequency band reverberation time, unit are the second (s)；

--- in normal flush cycle, the console mode ceramic pedestal pan that surface method measures is measured through parallelepiped The A weighted single event cumulative percent time integral sound pressure level of sample wash noise, unit are decibel (dB)；

L_JA(10)--- under testing location and corresponding meteorological condition, each console mode ceramic pedestal pan sample is normally being rushed The flushing noise A weighted cumulative percent acoustic energy grade that application parallelepiped measurement surface method measures in the water period, unit are Decibel (dB)；

S₀=1m²；

C₁--- the function of air characteristics impedance under the meteorological condition in testing time and place；

C₂--- standard meteorological conditions will be converted to relative to the practical acoustic energy under testing time and place meteorological condition The radiation impedance correction value of lower acoustic energy；

p_s--- the atmospheric pressure of testing time and place, unit are kPa (kPa)；

p_s,0--- standard atmospheric pressure, 101.325kPa；

The air themperature of θ --- testing time and place, unit are degree Celsius (DEG C)；

θ₀=314K；

θ₁=296K；

L_{JA ref,atm(10)}--- under the standard meteorological conditions that atmospheric pressure is 101.325kPa, temperature is 23.0 DEG C, each Console mode ceramic pedestal pan rinses the A weighted cumulative percent acoustic energy grade of noise, and unit is decibel (dB)；

--- the A weighted cumulative percent acoustic energy grade of every group of console mode ceramic pedestal pan sample wash noise Average value, unit are decibel (dB)；

L_JA(10)1、L_JA(10)2、L_JA(10)3--- the A weighted of every group of three console mode ceramic pedestal pan sample wash noises is tired Percentage acoustic energy grade is counted, unit is decibel (dB)；

--- under the standard meteorological conditions that atmospheric pressure is 101.325kPa, temperature is 23.0 DEG C, every group is fallen The average value of the A weighted cumulative percent acoustic energy grade of ground formula ceramic pedestal pan sample wash noise, unit are decibel (dB)；

L_{JA ref,atm(10)1}、L_{JA ref,atm(10)2}、L_{JA ref,atm(10)3}--- atmospheric pressure is 101.325kPa, temperature is Under 23.0 DEG C of standard meteorological conditions, the A weighted cumulative percent of every group of three console mode ceramic pedestal pan sample wash noises Acoustic energy grade, unit are decibel (dB)；

(2) data revision of the convention requirement: the continuous N measured at parallelepiped measurement i-th of surface microphone position_eA seat Q-th event in toilet stool washing noise emission event (q=1,2 ... N_e；N_e>=5) when A weighted single event cumulative percent Between integrate sound pressure level L '_{EAi,q(ST)(10)}And its mean value L '_Ei(ST)(10)It is averaged sound with the A weighted cumulative percent time of ambient noise Arbitrarily downgrade L_pAi(B)(10)Retain one decimal place effective digital；The continuous N measured on parallelepiped measurement surface_eA toilet seat Device rinses the average value of the A weighted single event cumulative percent time integral sound pressure level of noise emission eventAnd its A weighted cumulative percent acoustic energy grade L_JA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculated result then round numbers；

(3) uncertainty of measurement: during console mode ceramic pedestal pan rinses noise testing, although sample mounting condition It is relatively stable with operation conditions, but the noncontinuity feature for causing to rinse noise is flowed based on liquid unstable state；This patent method It is main to investigate repeatability standard deviation σ_omcTo the cumulative effect of uncertainty of measurement, and provide on parallelepiped measurement surface The repeatability of console mode ceramic pedestal pan flushing noise A weighted single event cumulative percent time integral sound pressure level measurement result Standard deviation_omcUpper limit value is not more than 1.5dB.

Related content in reference standard GB/T 3767-2016, in a complete normal flush cycle, by same position Experimenter uses same sound level meter, to selected by the same part console mode ceramic pedestal pan sample of the same installed position The average value of A weighted single event cumulative percent time integral sound pressure level on same parallelepiped measurement surface6 duplicate measurements (for each duplicate measurements, toilet seat sample must be reinstalled and adjust positioning) is carried out, and right Measurement result carries out background noise modification.Repeatability standard deviation σ_omcCalculation formula are as follows:

In formula:

--- under the conditions of set sample Installation And Test, console mode ceramic pedestal pan rinses noise jth time weight Repetition measurement amount and after background noise modification parallelepiped measurement surface on A weighted single event cumulative percent time integral The average value of sound pressure level；

--- the Arithmetical average sound pressure grade being calculated by all repeated measuring results.

The evaluation of result calculates, and carries out in the steps below:

(1) console mode ceramic pedestal pan rinses noise judgment basis: biological study shows that environmental noise on human body has It significantly affects: when noise is greater than 45dB (A), will affect sleep；When noise is greater than 55dB (A), mood will be caused uneasy；Noise is big Study and work efficiency will be reduced when 75dB (A)；When noise is greater than 90dB (A), provisional Hearing Threshold Shift will be caused；It is greater than When 140dB (A), ear acute trauma will lead to.Therefore, state compulsory standard GB 50118-2010 " civil buildings sound insulation design Specification " in the 4.1.1 articles regulation residential housing living room in round the clock permitted noise level (A sound level) be 45dB, in bedroom Night noise must not exceed 37dB, and noise must not exceed 45dB between daytime.State compulsory standard GB in terms of Related product Quality Control The 6.3rd article of regulation toilet seat rinses the cumulative percent sound level L of noise in 6952-2015 " sanitary ceramics "₅₀55dB should be no more than (A)、L₁₀No more than 65dB (A).

According to national environmental protection specification and product standard requirement, following classification criterion is taken:

Very low to rinse noise, environmental-protecting performance is excellent；

Very low to rinse noise, environmental-protecting performance is good；

Lower to rinse noise, environmental-protecting performance is preferable；

Higher to rinse noise, environmental-protecting performance is poor；

Very high to rinse noise, environmental-protecting performance is inferior.

(2) every group of console mode ceramic pedestal pan rinses the judgement of noise rating result: in the examination of 0.35MPa ± 0.05MPa It tests under the conditions of static pressure, using parallelepiped measurement surface method to (half punching or Quan Chong) console mode ceramics in normal flush cycle After the flushing noise of toilet seat is tested, as some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)It is greater than 3 sample wash noise A weighted cumulative percent acoustic energy grade L of this group_JA(10)Arithmetic mean of instantaneous value10% when, need Again one group of sample is extracted to repeat to test；The two groups of toilet seat samples in front and back are calculated under the conditions of specific static pressure, using sound level meter A weighted equivalent sound level fast time character of weighting " F " through the flushing noise that measures of parallelepiped measurement surface method accumulative hundred Score acoustic energy grade L_JA(10)Arithmetic mean of instantaneous valueIf some sample wash noise A weighted cumulative percent acoustic energy Grade L_JA(10)Greater than this two groups of 6 sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value 10%, then abandon it；Take remaining toilet seat sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic average ValueAs this group of console mode ceramic pedestal pan sample wash noise rating index.

Detailed description of the invention

Fig. 1 is that the console mode ceramic pedestal pan in the present invention on a plane of reflection rinses noise source reference body schematic diagram；

In figure: d₀- sound source characteristics size, m；l₁The length of-reference body, m；l₂The width of-reference body, m；l₃- benchmark The height of body, m；O-coordinate origin；

Fig. 2 is that the console mode ceramic pedestal pan in the present invention on two planes of reflection rinses noise source reference body schematic diagram；

Fig. 3 is that the console mode ceramic pedestal pan in the present invention on three planes of reflection rinses noise source reference body schematic diagram；

Fig. 4 is that the parallelepiped of the console mode ceramic pedestal pan flushing noise source in the present invention on a plane of reflection is surveyed Scale face and its microphone position array schematic diagram；

In figure: ●-microphone position；A-reflecting surface；B-reference body；2a-measurement length surface, m；2b-measurement table Face width, m；C-measurement apparent height, m；D-measurement distance, m；l₁- benchmark body length, m；l₂- reference body width, m； l₃- reference body height, m；

Fig. 5 is that the parallelepiped of the console mode ceramic pedestal pan flushing noise source in the present invention on two planes of reflection is surveyed Scale face and its microphone position array schematic diagram；

In figure: ●-microphone position；B-reference body；2a-measurement length surface, m；2b-measurement face width, m； C-measurement apparent height, m；D-measurement distance, m；l₁- benchmark body length, m；l₂- reference body width, m； l₃- reference body Highly, m；

Fig. 6 is that the parallelepiped of the console mode ceramic pedestal pan flushing noise source in the present invention on three planes of reflection is surveyed Scale face and its microphone position array schematic diagram；

Specific embodiment

With reference to the accompanying drawing and preferred embodiment the present invention will be described in detail so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.

The present embodiment with originate from Tangshan and internal structure for injection hydrocone type, the nominal water consumption of folk art term be respectively 6L and The console mode ceramic pedestal pan product of 3L illustrates for flushing noise measuring under the conditions of rushing water consumption entirely.

Specific detection method carries out in the steps below:

(1) sample installation and debugging

1.1 sample sizes, specification

3 types, specification, the identical porcelain of size or Shi ceramic console mode that same producer, same batch produce are sat For closet sample as one group, internal structure can fall formula or hydrocone type for punching, (single using the gravity type such as flush box flushometer It rushes formula or double rushes formula).

The installation of 1.2 samples

It is equipped with and meets flush box and tank for excrement pan accessory that specified water consumption requires, and the ring of the suitable size of outfit, Cover board and flange (are the toilet seat sample of heel row formula for drainage pattern, the suitable flange of size should be used its drainage pattern Lower-discharging type is adjusted to by heel row formula).According to the test of water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015 for water system System standardized debugging program, debugs the cistern water supply system of toilet seat sample to be measured, Ying Fuhe related request；Flushing water The working water level of case can satisfy normal flushing process needs, and nominal water consumption is equal with actual used water amount.

The test of 1.3 connection sealings

Installation instructions referring to factory be console mode ceramic pedestal pan sample to be measured assemble corresponding flushometer and into Water pipe is attached seal tightness test according to the 8.11st article of regulation in GB 6952-2015, i.e., in the test water pressure of 0.1MPa Under the conditions of power, 15min is continuously kept, connecting line answers ne-leakage, it is ensured that toilet seat and flushometer have good entirety close Feng Xing.

1.4 Sample location

Not close to the console mode ceramic pedestal pan sample of any sidewalls when 1.4.1 for installation, if in half noise reduction It is tested in the acoustic enviroment of proximate freedom field above the reflecting surface of room, it is central and true sample to be tested directly can be placed in ground It is normal to protect its pre-washing function.If tested in rigid plane room or dedicated reverberation chamber, sample is placed on ground simultaneously So that it is not less than 1.0m at a distance between the walls with any one side, while ensuring that pre-washing function is normal.

It 1.4.2, can be in rigid plane room or dedicated reverberation for the console mode ceramic pedestal pan sample close to wall installation It is tested in room, sample to be tested is placed on ground, make distance between its back side and close perpendicular walls reflecting surface For 15cm ± 5cm, and ensure the distance between sample and its indoor excess-three sidewalls not less than 1.5m；Guarantee to rinse function simultaneously It can be normal.

It 1.4.3, can be in rigid plane room or dedicated reverberation for the console mode ceramic pedestal pan sample close to corner installation It is tested in room, sample to be tested is placed on ground, reflect its back side and side and two close perpendicular walls Distance is 15cm ± 5cm between face, and ensures that sample is not less than 1.5m at a distance between the walls with indoor in addition two sides；Simultaneously Guarantee that pre-washing function is normal.

(2) determination on sound source reference body and parallelepiped measurement surface

The shape and size of 2.1 toilet seats flushing noise source reference body

In analysis console mode ceramic pedestal pan and its flushometer Each part to flushing noise radiation overall contribution On the basis of, according to GB/T 3767-2016, " acoustic sound pressure method measures close above Sound Power Level of Noise Source harmony energy level reflecting surface Like the engineering method of free field " in the 7.1st article of relevant regulations, using three-dimensional coordinate system to the positions and dimensions of sound source reference body into Row setting；It is corresponding to rinse noise source base for tri- kinds of 1.4.1~1.4.3 different sample mounting means in the present embodiment Quasi- body structure difference is as shown in FIG. 1 to 3.When being positioned to sound source reference body, with sound source reference body and its adjacent anti- The center of the formed cabinet of mirror image in plane is penetrated as coordinate origin O, trunnion axis x and y are flat with the length of reference body and width respectively Row.Using the horizontal length of toilet seat sample as the length l of sound source reference body₁, using the horizontal width of flush box as sound source base The width l of quasi- body₂, vertical range using water tank working water bit line to ground as sound source reference body height l₃；Corresponding to difference Test environment conditions, the characteristic size d of sound source reference body₀Respectively [(l₁/2)²+(l₂/2)²+l₃ ²]^1/2(reflection is flat Face), [l₁ ²+(l₂/2)²+l₃ ²]^1/2(two planes of reflection) and [l₁ ²+l₂ ²+l₃ ²]^1/2(three planes of reflection), unit is rice (m)。

2.2 parallelepipeds measure the selection on surface and the determination of microphone position array

It is parallel used by testing according to the 7.2.4 articles and the 8.1.2 articles relevant regulations in standard GB/T 3767-2016 Hexahedron measurement surface and sound source reference body coordinate origin and face shaping with same orientation, i.e. area are S, envelope is to be measured Toilet seat rinse noise source, it is each while be parallel to reference body while and with reference body distance be d an imaginary parallelepiped.

2.2.1 if console mode ceramic pedestal pan sample to be measured is determined when installing according to the 1.4.1 articles in the present embodiment Position, then parallelepiped measurement surface and its microphone position array are as shown in figure 4, each measuring point coordinate is shown in Table 1, wherein measuring Distance d=1.0m；The area S for measuring surface is calculated according to formula (1):

S=4 (ab+bc+ca) ... ... ... ... ... ... ... ... ... (1)

In formula: a=0.5l₁+ d, b=0.5l₂+ d, c=l₃+d；Wherein l₁、l₂、l₃The respectively length and width of sound source reference body And height.

2.2.2 if console mode ceramic pedestal pan sample to be measured is determined when installing according to the 1.4.2 articles in the present embodiment Position, then parallelepiped measurement surface and its microphone position array are as shown in figure 5, each measuring point coordinate is shown in Table 2, wherein measuring Distance d=1.0m；The area S for measuring surface is calculated according to formula (2):

S=2 (2ab+bc+2ca) ... ... ... ... ... ... ... ... ... (2)

In formula: a=0.5l₁+ 0.5d, b=0.5l₂+ d, c=l₃+d；Wherein l₁、l₂、l₃The respectively length of sound source reference body It is (from wall to front end face), wide and high.

Microphone position

1

2

3

4

5

6

x

2a

a

2a

a

y

0

b

- b

b

-b

0

z

0.5c

c

2.2.3 if console mode ceramic pedestal pan sample to be measured is determined when installing according to the 1.4.3 articles in the present embodiment Position, then the parallelepiped measurement surface corresponding to it and its microphone position array are as shown in fig. 6, each measuring point coordinate is shown in Table 3, wherein measuring distance d=1.0m；The area S for measuring surface is calculated according to formula (3):

S=2 (2ab+bc+ca) ... ... ... ... ... ... ... ... ... (3)

In formula: a=0.5l₁+ 0.5d, b=0.5l₂+ 0.5d, c=l₃+d；Wherein l₁、l₂、l₃Respectively sound source reference body Length and width and height (the long l of reference body₁With wide l₂, i.e., from two face walls to the distance of corresponding reference body opposite face).

Microphone position	1	2	3	4
					x	2a	a	2a	a
y	-b	-2b	- 2b	-b
					z	0.5c	0.5c	c	c

(3) sound-pressure-level measurement

3.1 in addition to retaining the necessary experimental apparatus such as 1 toilet seat sample and tripod to be measured, by remaining article in test cabinet It all moves away from, must not have supernumerary on the scene in test cabinet；Experimental implementation person must not dress the clothing of obvious sound absorption characteristics；Make With through assay approval thermometer and barometer to testing indoor air themperature and atmospheric pressure is measured and records.

Before 3.2 pairs of console mode ceramic pedestal pan samples are rinsed noise testing, measured first with straight steel ruler and square Its size l₁、l₂、l₃And it records；According to the quantity of the plane of reflection involved by sample mounting means, determine that the space of sound source reference body is fixed Position simultaneously calculates its characteristic size d₀；The applicable parallelepiped envelope sound source measurement surface of selection and calculate its specific dimensions a, b, c；According to the microphone position array on selected parallelepiped measurement surface, calculates each measuring point coordinate and record.

3.3, which measure sound level meter used, should meet 1 type instrument requirements in GB/T 3785.1-2010, and the re-testing periods are no more than 2 Year；Filter meets 1 type instrument requirements in IEC 61260:1995, and calibration cycle is no more than 1 year.Before each on-test and tie Shu Hou, using meeting one of the acoustic calibrator of 1 grade of accuracy requirement in GB/T 15173 within the scope of sound level meter measurement frequency It is verified in a or multiple frequencies；It reads difference and is not more than 0.5dB.

It can be semi-anechoic room or reverberation chamber that 3.4 toilet seats, which rinse noise test cabinet, it is ensured that hold in test cabinet using space Product meets ceramic pedestal pan sample installation requirement to be measured, and has needed for pre-washing function to/drainage condition, the static pressure of test water Power is controllable；Wherein background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing the sound of proximate freedom field above reflecting surface Condition, re-testing periods are no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is between 5s~6s range It is interior.

3.5 in the semi-anechoic room or reverberation chamber for meeting above-mentioned requirements, and the biography on surface is measured according to selected parallelepiped Sound device position array, positions each measuring point coordinate；Tripod is moved at point position and will be provided with related sound simultaneously The sound level meter for learning performance is placed in its top holder, it is ensured that sound wave incident angle is identical when the orientation of microphone is calibrated with it and vertical refers to To measurement surface.

When 3.6 integral using a complete normal flush cycle (half punching or Quan Chong) as the acquisition of sound level meter sound signal Between, if toilet seat sample flush cycle to be measured is less than 20s, the time of integration is in terms of 20s；It is equivalent using the A weighted of sound level meter The cumulative percent time that the fast time character of weighting " F " of sound level measures ambient noise on selected parallelepiped measurement surface is flat Equal sound pressure level L_pAi(B)(10)And it records；It is continuously measured at each microphone position 3 times, takes its arithmetic mean of instantaneous value as the position Locate the sound-pressure-level measurement value of ambient noise.If the difference of sound pressure level measured by 3 times is greater than 0.5dB at each position, survey again It measures and records.

Test static pressure is adjusted to 0.35MPa ± 0.05MPa by 3.7, and water tank is adjusted to its working water bit line mark, punching Water makes closet sample water seal be filled with water to ordinary water level；Then, closet cover board is lifted, is required according to water consumption to be measured, according to just Normal mode starts flushometer and timing；Believe using a complete normal flush cycle (half punching or Quan Chong) as sound level meter audio frequency Number acquisition the time of integration, if the flush cycle of toilet seat sample be less than 20s, the time of integration is in terms of 20s.Parallel six N continuously is repeated to toilet seat sample at each microphone position in face bulk measurement surface_eSecondary flushing operation is counted using the A of sound level meter The fast time character of weighting " F " of power equivalent sound level measures q-th of flushing noise emission event (each flushing in corresponding position respectively Circulation can be considered an individual noise emission event；Q=1,2 ... N_e；N_e>=5) when A weighted single event cumulative percent Between integrate sound pressure level L '_{EAi,q(ST)(10)}And it records；Static pressure, water consumption and the flush cycle washed by water every time are recorded simultaneously.

(4) result calculates

The selection of 4.1 calculation formula: relevant regulations in GB/T 3767-2016, the meter of test parameter involved by the present embodiment are referred to It is as follows to calculate formula:

K_2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... (9)

L_{JA ref,atm(10)}=L_JA(10)+C₁+C₂………………………………………………(16)

In formula:

N_M--- parallelepiped measures surface microphone position number；

K_1A--- background noise modification value；

K_2A--- test Environment Correction Value；

V --- test room volume, unit are cubic meter (m³)；

S₀=1m²；

p_s,0--- standard atmospheric pressure, 101.325kPa；

θ₀=314K；

θ₁=296K；

L_{JA ref,atm(10)1}、L_{JA ref,atm(10)2}、L_{JA ref,atm(10)3}--- atmospheric pressure is 101.325kPa, temperature is Under 23.0 DEG C of standard meteorological conditions, the A weighted cumulative percent of every group of three console mode ceramic pedestal pan sample wash noises Acoustic energy grade, unit are decibel (dB).

4.2 data revisions of the convention requirement: the continuous N measured at parallelepiped measurement i-th of surface microphone position_eA seat Q-th event in toilet stool washing noise emission event (q=1,2 ... N_e；N_e>=5) when A weighted single event cumulative percent Between integrate sound pressure level L '_{EAi,q(ST)(10)}And its mean value L '_Ei(ST)(10)It is averaged sound with the A weighted cumulative percent time of ambient noise Arbitrarily downgrade L_pAi(B)(10)Retain one decimal place effective digital；The continuous N measured on parallelepiped measurement surface_eA toilet seat Device rinses the average value of the A weighted single event cumulative percent time integral sound pressure level of noise emission eventAnd its A weighted cumulative percent acoustic energy grade L_JA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculated result then round numbers.

4.3 uncertainties of measurement: during console mode ceramic pedestal pan rinses noise testing, although sample mounting condition It is relatively stable with operation conditions, but the noncontinuity feature for causing to rinse noise is flowed based on liquid unstable state；This patent method It is main to investigate repeatability standard deviation σ_omcTo the cumulative effect of uncertainty of measurement, and provide on parallelepiped measurement surface The repeatability of console mode ceramic pedestal pan flushing noise A weighted single event cumulative percent time integral sound pressure level measurement result Standard deviation_omcUpper limit value is not more than 1.5dB.

In formula:

(5) performance judgment

5.1 console mode ceramic pedestal pans rinse noise judgment basis

Biological study shows that environmental noise on human body has and significantly affects: when noise is greater than 45dB (A), will affect and sleeps It sleeps；When noise is greater than 55dB (A), mood will be caused uneasy；Noise will reduce study and work efficiency when being greater than 75dB (A)；It makes an uproar When sound is greater than 90dB (A), provisional Hearing Threshold Shift will be caused；When greater than 140dB (A), ear acute trauma will lead to.Therefore, state The daily life of the 4.1.1 articles regulation residential housing in family mandatory standard GB 50118-2010 " Code for sound insulation design of civil buildings " Indoor noise level (A sound level) permitted round the clock is 45dB, and night noise must not exceed 37dB in bedroom, and noise must not surpass between daytime Cross 45dB.The 6.3rd article of regulation is sat in state compulsory standard GB 6952-2015 " sanitary ceramics " in terms of Related product Quality Control The cumulative percent sound level L of toilet stool washing noise₅₀55dB (A), L should be no more than₁₀No more than 65dB (A).

Very low to rinse noise, environmental-protecting performance is excellent；

Very low to rinse noise, environmental-protecting performance is good；

Lower to rinse noise, environmental-protecting performance is preferable；

Higher to rinse noise, environmental-protecting performance is poor；

Very high to rinse noise, environmental-protecting performance is inferior.

5.2 every groups of console mode ceramic pedestal pans rinse the judgement of noise rating result

Under the conditions of the test static pressure of 0.35MPa ± 0.05MPa, using parallelepiped measurement surface method to normal punching After the flushing noise of (half punching or Quan Chong) console mode ceramic pedestal pan is tested in the water period, as some sample wash noise A Weighted cumulative percent acoustic energy grade L_JA(10)3 sample wash noise A weighted cumulative percent acoustic energy grades are organized greater than this L_JA(10)Arithmetic mean of instantaneous value10% when, need to extract one group of sample again and repeat to test；Calculate the two groups of toilet seats in front and back Device sample under the conditions of specific static pressure, using sound level meter A weighted equivalent sound level fast time character of weighting " F " through parallel six The flushing noise cumulative percent acoustic energy grade L that face bulk measurement surface method measures_JA(10)Arithmetic mean of instantaneous valueIf some Sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Greater than this two groups of 6 sample wash noise A weighteds accumulative hundred Score acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining toilet seat sample wash noise A weighted Cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous valueAs this group of console mode ceramic pedestal pan sample wash noise Evaluation index.

Test facilities, instrument and equipment used in the present embodiment and test equipment:

(1) test facilities

Semi-anechoic room: interior architecture dead size is 9.8m × 7.3m × 5.9m, and peace hangs useful space size after wedge absorber For 7.8m × 5.3m × 4.9m, dischargeable capacity 203m³, effective usable floor area is 41m².It is put down using tile floor as individual reflection Face, it is indoor except be equipped with accordingly to/drainage pipeline and air-conditioning in addition to again without other fixation means；When laboratory normal operation, surrounding When interference without exception, chamber background noise is lower than 14.1dB (A)；The expanded uncertainty of sound pressure level measurements is U₉₅=(0.4 ~1.0) dB, k=2.

(2) testing equipment and equipment

2.1 sound level meters: Japanese Li Yin company production, can measure equivalent continuous acoustic pressure L at model NA-28_eq, performance meets 1 type integrating sound level meter provides in GB/T 3785, and filter meets the requirement of GB 3241；Noise analysis instrument preamplifier it is sensitive Degree is that -27dB ± 2dB, A weighted linear operation range is 25dB~130dB, and it is 143dB that peak sound level, which measures the upper limit, is inherently made an uproar It is 17dB that sound A, which weights maximum value, and measurement frequency range is 10Hz~20kHz, sampling period 15.6ms.It is adopted before measurement every time With accuracy be ± 0.1dB sound calibration device chosen within the scope of test frequency 100Hz, 300Hz, 500Hz, 700Hz, The point such as 900Hz, 1000Hz carries out whole verification to correlated noise measuring system.

When environmental condition is 23 DEG C, 30%RH, 102.4kPa, according to JJG 188-2002 " sound level meter vertification regulation ", In the measurement range of 2Hz~200kHz, after selection different frequency scope is tested, calibration result data are shown in Table 4.

Calibration result data under 4 sound level meter different frequency scope of table

Sound pressure level uncertainty U=0.4dB~1.0dB (k=2)；Sound pressure level uncertainty U=at reference frequency 0.07dB (k=2)；The uncertainty of calibration result is U=1.0dB (k=2).

2.2 acoustic calibrators: the production of hundred million Europe instrumentation Co., Ltds, model AWA6221A, for the absolute of sound level meter Pressure calibration, acoustical behavior meet 1 grade of accuracy requirement in GB/T 15173；Nominal sound pressure level is 94dB and 114dB (with 20 μ On the basis of Pa), being applicable in frequency range is 1kHz~5Hz, and sound pressure level accuracy is ± 0.2dB (23 DEG C) and (- 10 DEG C of ± 0.3dB ~50 DEG C), total harmonic distortion≤1% when 94dB.

2.3 rulers: scale division value is straight steel ruler, the square of 1mm.

2.4 water seal rulers: scale division value 1mm.

2.5 thermometers: range isScale division value is 0.2 DEG C.

2.6 aneroid pressure meters: measurement range is 800hPa~1060hPa, and the indicating value limits of error are ± 1.0hPa.

2.7 stopwatches: precision 0.01s.

2.8 tripods: carbon fiber or aluminum alloy material, load-bearing 10kg or more, the 2.0m of maximum height containing holder.

The detection data and result of the present embodiment calculate:

In semi-anechoic room, carried out using flushing noise of the parallelepiped measurement surface method to console mode ceramic pedestal pan Detection, coherent detection data and calculated result are shown in Table 5.

5 console mode ceramic pedestal pan of table rinses noise measuring data (plane of reflection)

The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent transformation made by bright specification and accompanying drawing content, is applied directly or indirectly in other relevant technical fields, and includes In scope of patent protection of the invention.

Claims

1. the detection method that a kind of console mode ceramic pedestal pan rinses noise, comprising: (1) sample installation and debugging；(2) sound source base Quasi- body and parallelepiped measurement surface determine；(3) sound-pressure-level measurement；(4) calculating of acoustic energy grade and ambient noise, test environment It is corrected with meteorological condition；(5) evaluation；It is characterized in that, being counted using the fast time of the A weighted equivalent sound level of sound level meter Characteristic " F " is weighed to measure on surface with cumulative percent acoustic energy grade L parallelepiped_JA(10)The console mode ceramics toilet seat of characterization Device rinses noise and carries out accurate quantitative detection, specific:

In sound-pressure-level measurement:

(1) before being measured to the flushing noise of console mode ceramic pedestal pan sample in semi-anechoic room or reverberation chamber, first according to GB/ " acoustic sound pressure method measures the engineering of proximate freedom field above Sound Power Level of Noise Source harmony energy level reflecting surface to T 3767-2016 Method " in relevant regulations for all kinds of typical installation requirements of console mode ceramic pedestal pan sample determine different plane of reflection conditions The positioning of lower sound source reference body simultaneously calculates its sound source characteristics size d₀；Simultaneous selection is opposite with toilet seat flushing noise source reference body The parallelepiped answered measures surface and is really sized, and specifies the coordinates of different measurement surface microphone position arrays；

(2) it in semi-anechoic room or reverberation chamber, is acquired using the normal flush cycle of console mode ceramic pedestal pan as sound signal The time of integration；Selected parallelepiped measurement is measured using the slow time character of weighting " S " of the A weighted equivalent sound level of sound level meter The cumulative percent time average sound pressure level L of ambient noise on surface_pAi(B)(10)；Then in the test of 0.35MPa ± 0.05MPa Under the conditions of static pressure, start flushometer, continuously to toilet seat sample at the parallelepiped measurement each microphone position in surface Product repeat N_eSecondary flushing operation.For different washing water quantity test requests, in normal flush cycle (half punching or Quan Chong), It is measured on selected parallelepiped measurement surface i-th using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter (each flush cycle can be considered an individual noise emission event to q-th of flushing noise emission event at microphone position；q =1,2 ... N_e；N_e>=5) single event cumulative percent time integral sound pressure level L '_{EAi,q(ST)(10)}；

In the calculating of acoustic energy grade:

According to related notion and calculation formula in GB/T 3767-2016, in the test static pressure condition of 0.35MPa ± 0.05MPa Under, it take the normal flush cycle of console mode ceramic pedestal pan (half punching or Quan Chong) as the time of integration of sound signal acquisition, by sound The ambient noise A weighted cumulative percent time average sound pressure level that grade meter measures on selected parallelepiped measurement surface L_pAi(B)(10)And continuous N at each microphone position_eQ-th event in a flushing noise emission event (q=1,2 ... N_e；N_e >=5) A weighted single event cumulative percent time integral sound pressure level L '_{EAi,q(ST)(10)}As basic data, parallel six are calculated The average value of the A weighted cumulative percent time average sound pressure level of ambient noise on the bulk measurement surface of faceAnd it is each transaudient Continuous N at device position_eA toilet seat rinses the A weighted single event cumulative percent time integral sound pressure level of noise emission event Average value L '_Ei(ST)(10)；It is derived from continuous N on parallelepiped measurement surface simultaneously_eA toilet seat rinses noise emission thing The average value of the A weighted single event cumulative percent time integral sound pressure level of partBy to background noise modification value K_1A, test Environment Correction Value K_2AAnd meteorological condition correction value C₁、C₂Influence analyzed, obtain in normal flush cycle Continuous N on (half punching or Quan Chong) parallelepiped measurement surface_eA toilet seat rinses the A weighted single event of noise emission event Cumulative percent time integral sound pressure levelAnd each console mode ceramic pedestal pan under the conditions of specific static pressure is calculated The A weighted cumulative percent acoustic energy grade L of sample wash noise_JA(10)And every group of sample wash noise A weighted cumulative percent The average value of acoustic energy gradeThe clearly corresponding data revision of the convention requires and uncertainty of measurement range simultaneously；

In evaluation of result:

Using parallelepiped measurement surface method under the test static pressure of 0.35MPa ± 0.05MPa, in normal flush cycle After the flushing noise of (half punching or Quan Chong) console mode ceramic pedestal pan sample is tested, when some sample wash noise A weighted Cumulative percent acoustic energy grade L_JA(10)3 sample wash noise A weighted cumulative percent acoustic energy grade L are organized greater than this_JA(10)It calculates Art average value10% when, need to extract one group of sample again and repeat to test；And it calculates two groups of front and back console mode ceramics and sits For closet sample under the conditions of specific static pressure, fast time character of weighting " F " warp using the A weighted equivalent sound level of sound level meter is parallel The flushing noise cumulative percent acoustic energy grade L that hexahedron measurement surface method measures_JA(10))Arithmetic mean of instantaneous valueIf certain A sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)It is accumulative greater than this two groups of 6 sample wash noise A weighteds Percentage acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining toilet seat sample wash noise A weighted Cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous valueAs this group of console mode ceramic pedestal pan sample wash noise Evaluation index.

2. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described Sample installation and debugging, carry out in the steps below:

(1) 3 types, specification, the identical porcelain of size or the Shi ceramic console mode toilet seat for producing same producer, same batch For device sample as one group, internal structure is that punching falls formula or hydrocone type；

(2) be equipped with and meet flush box and cistern fittings that specified water consumption requires, and be equipped with the ring for being suitble to size, cover board and Flange (is the toilet seat sample of heel row formula for drainage pattern, should use the suitable flange of size by its drainage pattern by heel row Formula is adjusted to lower-discharging type), water system standard is tested according to water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015 Change debugging routine, the cistern water supply system of toilet seat sample to be measured is debugged；The working water level of flush box can satisfy Normal flushing process needs, and nominal water consumption is equal with actual used water amount；

It (3) is that console mode ceramic pedestal pan sample to be measured assembles corresponding flushometer and water inlet referring to the installation instructions of factory Pipe, is attached seal tightness test according to the 8.11st article of regulation in GB 6952-2015, i.e., in the test water pressure of 0.1MPa Under the conditions of, continuously keep 15min, connecting line ne-leakage, it is ensured that toilet seat and flushometer have good overall tightness；

(4) for installation not close to the console mode ceramic pedestal pan sample of any sidewalls when, if reflected in semi-anechoic room It is tested in the acoustic enviroment of proximate freedom field above face, sample to be tested directly can be placed in ground center and ensures its punching It is normal to wash function.If tested in rigid plane room or dedicated reverberation chamber, sample is placed on ground and make its with The distance of any one side between the walls is not less than 1.0m, while ensuring that pre-washing function is normal；

(5) for close to wall installation console mode ceramic pedestal pan sample, can in rigid plane room or dedicated reverberation chamber into Row test, sample to be tested is placed on ground, distance 15cm between its back side and close perpendicular walls reflecting surface is made ± 5cm, and ensure the distance between sample and its indoor excess-three sidewalls not less than 1.5m；Guarantee pre-washing function just simultaneously Often；

(6) for close to corner installation console mode ceramic pedestal pan sample, can in rigid plane room or dedicated reverberation chamber into Row test, sample to be tested is placed on ground, is made between its back side and side and two close perpendicular walls reflectings surface Distance is 15cm ± 5cm, and ensures that sample is not less than 1.5m at a distance between the walls with indoor in addition two sides；Guarantee to rinse simultaneously Function is normal.

3. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described The determination on sound source reference body and parallelepiped measurement surface, carries out in the steps below:

(1) toilet seat rinses the determination of noise source reference body shape and size: in analysis console mode ceramic pedestal pan and its bath On the basis of device Each part is to noise radiation overall contribution is rinsed, according to GB/T 3767-2016, " acoustic sound pressure method is surveyed Determine the engineering method of proximate freedom field above Sound Power Level of Noise Source harmony energy level reflecting surface " in the 7.1st article of relevant regulations, utilize Three-dimensional coordinate system sets the positions and dimensions of sound source reference body；Pacify for different console mode ceramic pedestal pan samples Dress mode is formed when positioning to sound source reference body with sound source reference body and its mirror image in neighboring reflection plane As coordinate origin O, trunnion axis x and y are parallel with the length of reference body and width respectively at the center of cabinet.With the level of toilet seat sample Length l of the length as sound source reference body₁, using the horizontal width of flush box as the width l of sound source reference body₂, worked with water tank Water level line to ground height l of the vertical range as sound source reference body₃；Corresponding to different test environment conditions, sound source base The characteristic size d of quasi- body₀Respectively [(l₁/2)²+(l₂/2)²+l₃ ²]^1/2(plane of reflection), [l₁ ²+(l₂/2)²+l₃ ²]^1/2 (two planes of reflection) and [l₁ ²+l₂ ²+l₃ ²]^1/2(three planes of reflection), unit are rice (m)；

(2) determination of parallelepiped measurement surface and its microphone position array: according in standard GB/T 3767-2016 the 7.2.4 article, and the 8.1.2 articles relevant regulations, the measurement surface of parallelepiped used by testing is with sound source reference body with identical The coordinate origin and face shaping in orientation, i.e. area are S, envelope toilet seat to be measured rinses noise source, each side is parallel to reference body Side and be d with reference body distance an imaginary parallelepiped, wherein d >=1.0m.

If not close to any sidewalls when console mode ceramic pedestal pan sample to be measured is installed, parallelepiped measures surface Microphone position array co-ordinates be shown in Table 1, area S is calculated according to formula (1):

S=4 (ab+bc+ca) ... ... ... ... ... ... ... ... ... (1)

In formula: a=0.5l₁+ d, b=0.5l₂+ d, c=l₃+d；Wherein l₁、l₂、l₃The respectively length and width and height of sound source reference body； Measure distance d=1.0m.

Microphone position 1 2 3 4 5 6 7 8 9 x a 0 - a 0 a - a - a a 0 y 0 b 0 - b b b - b - b 0 z 0.5c 0.5c 0.5c 0.5c c c c c c

If console mode ceramic pedestal pan sample to be measured is installed close to wall, parallelepiped measures the microphone position on surface Array co-ordinates are shown in Table 2, and area S is calculated according to formula (2):

S=2 (2ab+bc+2ca) ... ... ... ... ... ... ... ... ... (2)

In formula: a=0.5l₁+ 0.5d, b=0.5l₂+ d, c=l₃+d；Wherein l₁、l₂、l₃Respectively the length of sound source reference body is (from wall Distance of the wall to front end face), it is wide and high；Measure distance d=1.0m.

Microphone position 1 2 3 4 5 6 x 2a a a 2a 2a a y 0 b - b b -b 0 z 0.5c 0.5c 0.5c c c c

If console mode ceramic pedestal pan sample to be measured is installed close to corner, parallelepiped measures the microphone position on surface Array co-ordinates are shown in Table 3, and area S is calculated according to formula (3):

S=2 (2ab+bc+ca) ... ... ... ... ... ... ... ... ... (3)

In formula: a=0.5l₁+ 0.5d, b=0.5l₂+ 0.5d, c=l₃+d；Wherein l₁、l₂、l₃Respectively the length of sound source reference body, Wide and height (the long l of reference body₁With wide l₂, i.e., from two face walls to the distance of corresponding reference body opposite face)；Measure distance d=1.0m.

Microphone position 1 2 3 4 x 2a a 2a a y -b -2b - 2b -b z 0.5c 0.5c c c

4. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described Sound-pressure-level measurement carries out in the steps below:

(1) in addition to retaining the necessary experimental apparatus such as 1 toilet seat sample and tripod to be measured, remaining article in test cabinet is whole It moves away from, must not have supernumerary on the scene in test cabinet；Experimental implementation person must not dress the clothing of obvious sound absorption characteristics；Use warp The thermometer and barometer of assay approval are measured and record to the indoor air themperature of test and atmospheric pressure；

(2) before being rinsed noise testing to console mode ceramic pedestal pan sample, its ruler is measured with straight steel ruler and square first Very little l₁、l₂、l₃And it records；According to the quantity of the plane of reflection involved by sample mounting means, the space orientation of sound source reference body is determined simultaneously Calculate its characteristic size d₀；The applicable parallelepiped envelope sound source measurement surface of selection simultaneously calculates its specific dimensions a, b, c；It presses According to the microphone position array on selected parallelepiped measurement surface, calculates each measuring point coordinate and record；

(3) 1 type instrument requirements in GB/T 3785.1-2010 should be met by measuring sound level meter used, and the re-testing periods are no more than 2 years；Filter Wave device meets 1 type instrument requirements in IEC 61260:1995, and calibration cycle is no more than 1 year.Before each on-test and after, Using meeting one or more of the acoustic calibrator of 1 grade of accuracy requirement in GB/T 15173 within the scope of sound level meter measurement frequency It is verified in a frequency；It reads difference and is not more than 0.5dB；

(4) it can be semi-anechoic room or reverberation chamber that toilet seat, which rinses noise test cabinet, it is ensured that accord in test cabinet using spatial volume Ceramic pedestal pan sample installation requirement to be measured is closed, and is had to/drainage condition needed for pre-washing function, the static pressure of test water can Regulation；Wherein background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing the acoustics item of proximate freedom field above reflecting surface Part, re-testing periods are no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is within the scope of 5s~6s；

(5) in the semi-anechoic room or reverberation chamber for meeting above-mentioned requirements, the microphone on surface is measured according to selected parallelepiped Position array positions each measuring point coordinate；Tripod is moved at point position and will be provided with associated acoustic simultaneously The sound level meter of energy is placed in its top holder, it is ensured that sound wave incident angle is identical when the orientation of microphone is calibrated with it and is perpendicularly oriented to survey Scale face；

(6) time of integration acquired using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound signal, If toilet seat sample flush cycle to be measured is less than 20s, the time of integration is in terms of 20s；Using the A weighted equivalent sound level of sound level meter Slow time character of weighting " S " measure cumulative percent time of ambient noise on selected parallelepiped measurement surface and be averaged sound Arbitrarily downgrade L_pAi(B)(10)And it records；It is continuously measured at each microphone position 3 times, its arithmetic mean of instantaneous value is taken to carry on the back as at the position The sound-pressure-level measurement value of scape noise.If the difference of sound pressure level measured by 3 times is greater than 0.5dB at each position, re-measure simultaneously Record；

(7) test static pressure is adjusted to 0.35MPa ± 0.05MPa, and water tank is adjusted to its working water bit line mark, bath makes Closet sample water seal is filled with water to ordinary water level；Then, closet cover board is lifted, is required according to water consumption to be measured, according to normal side Formula starts flushometer and timing；It is adopted using a complete normal flush cycle (half punching or Quan Chong) as sound level meter sound signal The time of integration of collection, if the flush cycle of toilet seat sample is less than 20s, the time of integration is in terms of 20s.It is surveyed in parallelepiped N continuously is repeated to toilet seat sample at each microphone position in scale face_eSecondary flushing operation, it is equivalent using the A weighted of sound level meter The fast time character of weighting " F " of sound level measures q-th of corresponding position flushing noise emission event respectively, and (each flush cycle can It is considered as an individual noise emission event；Q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time integral Sound pressure level L '_{EAi,q(ST)(10)}And it records；Static pressure, water consumption and the flush cycle washed by water every time are recorded simultaneously.

5. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described Acoustic energy grade calculates, and carries out in the steps below:

(1) calculation formula selects: referring to relevant regulations in GB/T 3767-2016, the calculation formula of test parameter involved by this patent It is as follows:

If △ L_EA(10)> 15dB, then without carrying out background noise modification；If 6dB≤△ L_EA(10)≤ 15dB, then according to formula (8) It is modified.

K_1A=-10lg (1-10^{-0.1△LpA(10)})……………………………………………………………(8)

K_2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... ... (9)

Work as K_2AWhen≤4dB, the measurement done according to this patent method is effective；The wherein absorption of semi-anechoic room and reverberation chamber room Calculation formula are as follows:

A=α S_ν……………………………………………………………………………(10)

A=0.16V/T_n…………………………………………………………………………(11)

L_JA _ref,atm(10)=L_JA(10)+C₁+C₂……………………………………………………………… (16)

In formula:

L′_Ei(ST)(10)--- in normal flush cycle, the N at parallelepiped measurement i-th of surface microphone position_eIt is secondary to measure Toilet seat rinse noise A weighted single event cumulative percent time integral sound pressure level mean value, unit be decibel (dB)；

N_e--- single toilet seat rinses the measurement time of noise emission event at the parallelepiped measurement each microphone position in surface Number (N_e≥5)；

L′_{EAi,q(ST)(10)}--- in normal flush cycle, measured at parallelepiped measurement i-th of surface microphone position Toilet seat flushing q-th of event of noise (q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time integral sound It arbitrarily downgrades, unit is decibel (dB)；

--- in normal flush cycle, the toilet seat measured on parallelepiped measurement surface rinses noise A meter The average value of single event cumulative percent time integral sound pressure level is weighed, unit is decibel (dB)；

N_M--- parallelepiped measures surface microphone position number；

--- in normal flush cycle, the ambient noise A weighted measured on parallelepiped measurement surface adds up hundred The average value of fractional time average sound pressure level, unit are decibel (dB)；

L_pAi(B)(10)--- in normal flush cycle, the background measured at the microphone position of i-th of surface is measured in parallelepiped Noise A weighted cumulative percent time average sound pressure level, unit are decibel (dB)；

K_1A--- background noise modification value；

K_2A--- test Environment Correction Value；

The A weighted average sound absorption coefficient of α --- test cabinet room surface, numberical range is referring to table in GB/T 3767-2016 A.1；

V --- test room volume, unit are cubic meter (m³)；

--- in normal flush cycle, the console mode ceramic pedestal pan sample that surface method measures is measured through parallelepiped The A weighted single event cumulative percent time integral sound pressure level of noise is rinsed, unit is decibel (dB)；

L_JA(10)--- under testing location and corresponding meteorological condition, each console mode ceramic pedestal pan sample is in normal bath week The flushing noise A weighted cumulative percent acoustic energy grade that application parallelepiped measurement surface method measures in phase, unit is decibel (dB)；

S₀=1m²；

C₂--- sound energy under standard meteorological conditions will be converted to relative to the practical acoustic energy under testing time and place meteorological condition The radiation impedance correction value of amount；

p_s,0--- standard atmospheric pressure, 101.325kPa；

θ₀=314K；

θ₁=296K；

L_JA _ref,atm(10)--- under the standard meteorological conditions that atmospheric pressure is 101.325kPa, temperature is 23.0 DEG C, each landing Formula ceramic pedestal pan rinses the A weighted cumulative percent acoustic energy grade of noise, and unit is decibel (dB)；

--- the A weighted cumulative percent acoustic energy grade of every group of console mode ceramic pedestal pan sample wash noise is averaged Value, unit are decibel (dB)；

L_JA(10)1、L_JA(10)2、L_JA(10)3--- the A weighted of every group of three console mode ceramic pedestal pan sample wash noises accumulative hundred Score acoustic energy grade, unit are decibel (dB)；

--- under the standard meteorological conditions that atmospheric pressure is 101.325kPa, temperature is 23.0 DEG C, every group of console mode The average value of the A weighted cumulative percent acoustic energy grade of ceramic pedestal pan sample wash noise, unit are decibel (dB)；

L_JA _ref,atm(10)1、L_JA _ref,atm(10)2、L_JA _ref,atm(10)3--- atmospheric pressure is 101.325kPa, temperature is 23.0 DEG C Standard meteorological conditions under, the A weighted cumulative percent acoustic energy of every group of three console mode ceramic pedestal pan sample wash noises Grade, unit are decibel (dB)；

(2) data revision of the convention requirement: the continuous N measured at parallelepiped measurement i-th of surface microphone position_eA toilet seat Rinse q-th event in noise emission event (q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time product Divide sound pressure level L '_{EAi,q(ST)(10)}And its mean value L '_Ei(ST)(10)With the A weighted cumulative percent time average sound pressure level of ambient noise L_pAi(B)(10)Retain one decimal place effective digital；The continuous N measured on parallelepiped measurement surface_eA toilet seat punching Wash the average value of the A weighted single event cumulative percent time integral sound pressure level of noise emission eventAnd its A meter Weigh cumulative percent acoustic energy grade L_JA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculated result then round numbers；

(3) uncertainty of measurement: during console mode ceramic pedestal pan rinses noise testing, although sample mounting condition and fortune Row situation is relatively stable, but the noncontinuity feature of flushing noise is caused based on liquid unstable state flowing；This patent method is main Investigate repeatability standard deviation σ_omcTo the cumulative effect of uncertainty of measurement, and provide to land on parallelepiped measurement surface The repeated standard of formula ceramic pedestal pan flushing noise A weighted single event cumulative percent time integral sound pressure level measurement result Deviations_omcUpper limit value is not more than 1.5dB.

Related content in reference standard GB/T 3767-2016 is tested in a complete normal flush cycle by same position Personnel use same sound level meter, to same selected by the same part console mode ceramic pedestal pan sample of the same installed position The average value of A weighted single event cumulative percent time integral sound pressure level on kind parallelepiped measurement surfaceInto 6 duplicate measurements of row (for each duplicate measurements, toilet seat sample must be reinstalled and adjust positioning), and to measurement result into Row background noise modification.Repeatability standard deviation σ_omcCalculation formula are as follows:

In formula:

--- under the conditions of set sample Installation And Test, console mode ceramic pedestal pan rinses noise jth time and repeats to survey It measures and the parallelepiped after background noise modification measures A weighted single event cumulative percent time integral acoustic pressure on surface The average value of grade；

6. the detection method that console mode ceramic pedestal pan according to claim 1 rinses noise, which is characterized in that described Evaluation of result carries out in the steps below:

(1) console mode ceramic pedestal pan rinses noise judgment basis: it is significant that biological study shows that environmental noise on human body has It influences: when noise is greater than 45dB (A), will affect sleep；When noise is greater than 55dB (A), mood will be caused uneasy；Noise is greater than Study and work efficiency will be reduced when 75dB (A)；When noise is greater than 90dB (A), provisional Hearing Threshold Shift will be caused；It is greater than When 140dB (A), ear acute trauma will lead to.Therefore, state compulsory standard GB 50118-2010 " civil buildings sound insulation design Specification " in the 4.1.1 articles regulation residential housing living room in round the clock permitted noise level (A sound level) be 45dB, in bedroom Night noise must not exceed 37dB, and noise must not exceed 45dB between daytime.State compulsory standard GB in terms of Related product Quality Control The 6.3rd article of regulation toilet seat rinses the cumulative percent sound level L of noise in 6952-2015 " sanitary ceramics "₅₀55dB should be no more than (A)、L₁₀No more than 65dB (A).

Very low to rinse noise, environmental-protecting performance is excellent；

Very low to rinse noise, environmental-protecting performance is good；

Lower to rinse noise, environmental-protecting performance is preferable；

Higher to rinse noise, environmental-protecting performance is poor；

Very high to rinse noise, environmental-protecting performance is inferior.

(2) every group of console mode ceramic pedestal pan rinses the judgement of noise rating result: quiet in the test of 0.35MPa ± 0.05MPa Under pressure condition, using parallelepiped measurement surface method to (half punching or Quan Chong) console mode ceramics toilet seat in normal flush cycle After the flushing noise of device is tested, as some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Greater than this group 3 sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10% when, need again One group of sample is extracted to repeat to test；The two groups of toilet seat samples in front and back are calculated under the conditions of specific static pressure, are counted using the A of sound level meter Weigh the flushing noise cumulative percent sound that the fast time character of weighting " F " of equivalent sound level measures through parallelepiped measurement surface method Energy level L_JA(10)Arithmetic mean of instantaneous valueIf some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10) Greater than this two groups of 6 sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10%, Then abandon it；Take remaining toilet seat sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value As this group of console mode ceramic pedestal pan sample wash noise rating index.