CN110160639A

CN110160639A - Acoustic energy grade hemisphere measuring surface method detects the method that console mode toilet seat rinses noise

Info

Publication number: CN110160639A
Application number: CN201810483032.XA
Authority: CN
Inventors: 李文杰; 袁芳丽; 罗兰华; 郝秋伟; 李丽华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-18
Filing date: 2018-05-18
Publication date: 2019-08-23
Anticipated expiration: 2038-05-18
Also published as: CN110160639B

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 hemisphere 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: hemisphere 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 hemisphere 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 rinse noise detection technique field blank, implementation method science and result comparativity, can for Tao Qigai into production technology, regulate market order provide detection technique support.

Description

Acoustic energy grade hemisphere measuring surface method detects the method that console mode 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 hemisphere measurement surface on cumulative percent acoustic energy grade L_JA(10)The console mode ceramic pedestal pan of characterization The method that noise is detected is rinsed, ceramic physicochemical property detection technique field is belonged to.

Background technique

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 Acoustic Wave Propagation All characteristics, wherein the directive property that the closely related propagation characteristic of noise testing is sound wave is rinsed with toilet seat, so that different There are certain capacity volume variances for the sound intensity received on direction.Experiment shows in toilet seat flushing process, sound above washable surface Strong maximum, front takes second place, left and right it is weak it, rear noise intensity it is minimum；The finger of noise source must be utilized in actual measurement Measuring point distribution is rationally arranged in tropism.

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 hemisphere_JA(10)The console mode ceramic pedestal pan flushing of characterization is made an uproar The method that sound is detected is able to solve console mode ceramic pedestal pan and rinses noise or even bathroom ceramics water inlet/draining noise essence Certainly measure test problem.

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 hemisphere measurement surface determine；(3) sound-pressure-level measurement；(4) acoustic energy grade calculate and ambient noise, test environment and Meteorological condition amendment；(5) evaluation；It is characterized in that, the fast time weighted of the A weighted equivalent sound level using sound level meter Characteristic " F " is to cumulative percent acoustic energy grade L_JA(10)The console mode ceramic pedestal pan of characterization rinses noise and carries out precisely quantitatively 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 hemisphere measures surface and is really sized, and specifies the coordinate of microphone position array on different measurement surfaces；

(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 hemisphere, which is measured, using the slow time character of weighting " S " of the A weighted equivalent sound level of sound level meter measures table The cumulative percent time average sound pressure level L of ambient noise on face_pAi(B)(10)；Then in the test of 0.35MPa ± 0.05MPa Under the conditions of static pressure, start flushometer, continuously toilet seat sample is repeated at the hemisphere measurement each microphone position in surface N_eSecondary flushing operation.For different washing water quantity test requests, in normal flush cycle (half punching or Quan Chong), using sound The fast time character of weighting " F " of the A weighted equivalent sound level of grade meter measures on selected hemisphere measurement surface at i-th of microphone position (each flush cycle can be considered an individual noise emission event to q-th of flushing noise emission 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 hemisphere 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, hemisphere is calculated Measure the average value of the A weighted cumulative percent time average sound pressure level of ambient noise on surfaceAnd each microphone position Set the continuous N in place_eA toilet seat rinses the flat of the A weighted single event cumulative percent time integral sound pressure level of noise emission event Mean value L '_EAi(ST)(10)；It is derived from continuous N on hemisphere measurement surface simultaneously_eA toilet seat rinses the A weighted of noise emission event The average value of single event cumulative percent time integral sound pressure levelBy to background noise modification value K_1A, test wrapper Border correction value K_2AAnd meteorological condition correction value C₁、C₂Influence analyzed, obtain in normal flush cycle that (half punching is complete Punching) hemisphere measurement surface on continuous N_eA toilet seat rinses the A weighted single event cumulative percent time of noise emission event Integrate sound pressure levelAnd the A of each console mode ceramic pedestal pan sample wash noise under the conditions of specific static pressure is calculated Weighted cumulative percent acoustic energy grade L_JA(10)And every group of sample wash noise A weighted cumulative percent acoustic energy grade is averaged ValueThe clearly corresponding data revision of the convention requires and uncertainty of measurement range simultaneously；

In evaluation of result:

Using hemisphere measurement surface method under the test static pressure of 0.35MPa ± 0.05MPa, (half in normal flush cycle Punching or Quan Chong) console mode ceramic pedestal pan sample flushing noise tested after, when some sample wash noise A weighted is accumulative Percentage 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 is flat Mean value10% when, need to extract one group of sample again and repeat to test；And calculate two groups of front and back console mode ceramic pedestal pan Sample is measured using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter through hemisphere under the conditions of specific static pressure The flushing noise cumulative percent acoustic energy grade L that 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 weighted cumulative percent sound energy Magnitude 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 valueEvaluation index as this group of console mode ceramic pedestal pan sample wash noise.

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 hemisphere measurement surface microphone position array flushing noise carry out Measurement, and ambient noise is modified.It is a transient process in view of the starting of toilet seat rinse mode, taking can be correctly anti- It is reflected on the A weighted cumulative percent acoustic energy grade L of human psychological and physiological influence_JA(10)As subjective assessment parameter；Detect skill Art has certain advance, has reached the modernization that ceramic pedestal pan rinses noise measuring, to realize the accurate of testing result Necessary hardware foundation has been established in change.

(2) scientific: to follow in GB/T 3767-2016 on the basis of acoustics versatility directive/guide, be based on liquid unsteady state flow The dynamic noncontinuity feature for causing noise is rinsed mechanism of noise generation and route of transmission for toilet seat, is surveyed according to envelope sound source Examination principle establishes hemisphere measurement surface acoustical model；The factors such as comprehensive analysis background noise, environment and meteorological condition tie detection The influence of fruit, and with A weighted cumulative percent acoustic energy grade under the conditions of civil buildings feedwater piping general operations pressure testing L_JA(10)Measurement result as rinse noise rating index, meet console mode toilet seat real use state and consumer concern Focus improves the science of detection method.

(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 hemisphere measurement surface are provided, while specifying that sample is pacified The series of key techniques content such as dress, measuring point coordinate, measuring process, calculation formula, uncertainty, evaluation of result, can be realized The quantification of console mode ceramic pedestal pan flushing 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, technically has centainly 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 acoustic energy grade for rinsing noise through hemisphere measurement surface method L_JA(10)As correlated results evaluation index；And the influence factors such as ambient noise, test environment, meteorological condition are modified, entirely Face determines the cumulative effect of uncertainty in measurement process, 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) hemisphere measurement surface microphone position array rinse noise A weighted cumulative percent acoustic energy grade L_JA(10)As The evaluation of result index of each toilet seat sample；And clear sample mounting condition and cistern fittings commissioning requirements, it is each by limiting The measurement frequency and data processing of ambient noise and flushing noise, improve the accuracy and representative of testing result at measuring point coordinate Property, it 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: being based on above-mentioned advantage, and the method for the present invention has stronger practicability, be conducive to expand inspection, Grind, produce the popularization and application of all circles；Be conducive to that ceramic pedestal pan is supported to rinse noise detection technique realization generalization, it can be to squat toilet Other sanitary wares such as device, the flushing noise of urinal and wash basin, bidet, inlet valve and tank for excrement pan accessory, To the products such as/drainage pipeline in use caused by noise and its detection technique research offer reference.

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 hemisphere 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 hemisphere measurement surface and its microphone position array: according in standard GB/T 3767-2016 the 7.2.3 article, and the 8.1.1 articles relevant regulations, the measurement surface of hemisphere used by testing and sound source reference body have same orientation Coordinate origin is a measurement radius that is, positioned at the cabinet center that reference body and its virtual image in adjacent reflecting surface are constituted For the hemisphere face of r；Wherein r >=2d₀And 16.0m >=r >=1.0m.If console mode ceramic pedestal pan sample to be measured is located at when installing On one plane of reflection, then measuring surface is a complete hemisphere and area S=2 π r², measure radius r=2.0m；Accordingly Microphone position array co-ordinates are shown in Table 1, and (rinsing noise in view of toilet seat has stronger directive property, if substantially transaudient at ten The A weighted sound pressure level variation range measured at device position is more than 10dB, then adds additional microphone position；Its coordinate is in table 1 The point that number is 11~20).If placed when toilet seat sample to be measured is installed close to two planes of reflection, measuring surface is 1/ 2 hemisphere and area S=π r², measure radius r=3.0m (the long l of sound source reference body₁, i.e., from wall to corresponding reference body front end face Distance)；Corresponding microphone position array co-ordinates are shown in Table 2 (if surveyed at 2,3,6,7 and 9 five basic microphone positions The A weighted sound pressure level variation range obtained is more than 5dB, then adds additional microphone position；Its coordinate be in table 2 number be 11,14, 15,18 four points).If placed when toilet seat sample to be measured is installed against three planes of reflection, measuring surface is 1/4 half Ball and area S=π r²/ 2, measure radius r=3.0m (the long l of reference body₁With wide l₂, i.e., opposite from two face walls to corresponding reference body The distance in face)；Corresponding microphone position array co-ordinates are shown in Table 3 (if measured at 1,2 and 3 three basic microphone position A weighted sound pressure level variation range be more than 3dB, then add additional microphone position；Its coordinate is that number is 4,5,6 in table 3 Three points).

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

2 toilet seat sample of table is located at 1/2 hemisphere on two planes of reflection and measures surface microphone position array co-ordinates

Position Number	x/r	y/r	z/r
				2	0.50	-0.86	0.15
3	0.50	0.86	0.15
				6	0.89	0	0.45
7	0.33	0.57	0.75
				9	0.33	-0.57	0.75
11	0.99	0	0.15
				14	0.45	-0.77	0.45
15	0.45	0.77	0.45
				18	0.66	0	0.75

3 toilet seat sample of table is located at 1/4 hemisphere on three planes of reflection and measures surface microphone position array co-ordinates

Position Number	x/r	y/r	z/r
				1	0.86	-0.50	0.15
2	0.45	-0.77	0.45
				3	0.47	-0.47	0.75
4	0.50	-0.86	0.15
				5	0.77	-0.45	0.45
6	0.47	-0.47	0.75

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 hemisphere envelope sound source that selection is mutually applicable in, which measures surface and calculates it, measures radius r；According to The microphone position array on selected hemisphere measurement surface, calculates each measuring point coordinate and records；

(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 using space in test cabinet Volume meet ceramic pedestal pan sample installation requirement to be measured, and have needed for pre-washing function to/drainage condition, test water Static pressure is controllable；Wherein background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing proximate freedom field above reflecting surface Acoustic condition, the re-testing periods be no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is between 5s~6s In range；

(5) in the semi-anechoic room or reverberation chamber for meeting above-mentioned requirements, the microphone position on surface is measured according to selected hemisphere Array is set, each measuring point coordinate is positioned；Tripod is moved at point position and will be provided with associated acoustic performance simultaneously Sound level meter be 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 measure 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 slow time character of weighting " S " of sound level measures the cumulative percent time average sound pressure of ambient noise on selected hemisphere measurement surface Grade L_pAi(B)(10)And it records；It is continuously measured 3 times in each microphone position, its arithmetic mean of instantaneous value is taken to make an uproar as background at the position The sound-pressure-level measurement value of sound.If the difference of sound pressure level measured by 3 times is greater than 0.5dB at each position, re-measures and remember Record；

(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.It is surveyed in hemisphere 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 product Divide 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 (5) is modified.

K_1A=-10lg (1-10^{-0.1△LpA(10)})……………………………………………………(5)

K_2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... (6)

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 Volume calculation formula are as follows:

A=α S_ν……………………………………………………………………………(7)

A=0.16V/T_n………………………………………………………………………(8)

L_{JA ref,atm(10)}=L_JA(10)+C₁+C₂………………………………………………………(13)

In formula:

L′_Ei(ST)(10)--- in normal flush cycle, the N at hemisphere measurement i-th of surface microphone position_eIt is secondary to measure Toilet seat 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 the measurement time of noise emission event at the hemisphere measurement each microphone position in surface Number (N_e≥5)；

L′_{EAi,q(ST)(10)}--- in normal flush cycle, the seat measured at the microphone position of i-th of surface is measured in hemisphere Q-th of event of toilet stool washing noise (q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time integral acoustic pressure Grade, unit are decibel (dB)；

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

N_M--- hemisphere measures surface microphone position number；

--- in normal flush cycle, the ambient noise A weighted measured on hemisphere measurement surface adds up percentage The average value of number 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 hemisphere 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；

S --- hemisphere 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 sample measured through hemisphere measurement surface method is rushed The A weighted single event cumulative percent time integral sound pressure level of noise is washed, unit is 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 hemisphere measurement surface method measures in the water period, unit is 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 hemisphere measurement i-th of surface microphone position_eA toilet seat punching Wash in noise emission event q-th of 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 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 hemisphere measurement surface_eA toilet seat rinses noise The average value of the A weighted single event cumulative percent time integral sound pressure level of transmitting eventAnd its A weighted is accumulative Percentage acoustic energy grade L_JA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseMeter Calculate result then round numbers；

(3) uncertainty of measurement: this patent method provides that console mode ceramic pedestal pan rinses noise on hemisphere measurement surface The repeatability standard deviation σ of A weighted single event cumulative percent time integral sound pressure level measurement result_omcUpper limit value is not more than 1.5dB.Related content in reference standard GB/T 3767-2016, it is real by same position in a complete normal flush cycle Personnel are tested using 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 a kind of hemisphere measurement surfaceIt carries out 6 times Duplicate measurements (for each duplicate measurements, toilet seat sample must be reinstalled and adjust positioning), and measurement result is carried on the back Scape noise correction.Repeatability standard deviation σ_omcCalculation formula are as follows:

In formula:

--- console mode ceramic pedestal pan rinses noise jth time duplicate measurements and the hemisphere after background noise modification Measure the average value of A weighted single event cumulative percent time integral sound pressure level on surface；

--- 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) according to national environmental protection specification and products standards 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) as some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)3 sample wash are organized greater than this Noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10% when, need to extract one group of sample again Product repeat to test；The two groups of toilet seat samples in front and back are calculated under the conditions of specific static pressure, using the A weighted equivalent sound level of sound level meter Fast time character of weighting " F " through the flushing noise cumulative percent acoustic energy grade L that measures of hemisphere measurement surface method_JA(10)Calculation Art average valueIf some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Greater than this two groups of 6 samples Product rinse noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take residue 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 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 the hemisphere measurement surface of the console mode ceramic pedestal pan flushing noise source in the present invention on a plane of reflection And its microphone position array schematic diagram；

In figure: ●-basic microphone position (1,2,3,4,5,6,7,8,9,10)；〇-add microphone position (11, 12,13,14,15,16,17,18,19,20)；A-measurement surface；B-reference body；

Fig. 5 is the 1/2 hemisphere measurement of the console mode ceramic pedestal pan flushing noise source in the present invention on two planes of reflection Surface and its microphone position array schematic diagram；

In figure: ●-microphone position (2,3,6,7,9)；〇-adds microphone position (11,14,15,18)；A-survey Scale face；A-measurement surface；B-reference body；R-measurement surface radius；

Fig. 6 is the 1/4 hemisphere measurement of the console mode ceramic pedestal pan flushing noise source in the present invention on three planes of reflection Surface and its microphone position array schematic diagram；

In figure: ●-microphone position (1,2,3)；〇-adds microphone position (4,5,6)；A-measurement surface； B— Reference body；R-measurement surface radius；

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 be spray hydrocone type, the nominal water consumption of folk art term for 6L landing Formula ceramic pedestal pan product illustrates for flushing noise measuring under the conditions of rushing water consumption entirely.

Specific detection method carries out in the steps below:

(1) sample mounting condition and commissioning requirements

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 hemisphere 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.For different console mode ceramic pedestal pan sample mounting means, to sound source base When quasi- body is positioned, the center of the formed cabinet of mirror image using sound source reference body and its in neighboring reflection plane is as coordinate Origin O, trunnion axis x and y are parallel with the length of reference body and width respectively.Using the horizontal length of toilet seat sample as sound source reference body Length l₁, using the horizontal width of flush box as the width l of sound source reference body₂, with the vertical of water tank working water bit line to ground Height l of the distance as sound source reference body₃；Corresponding to different test environment conditions, the characteristic size d of sound source reference body₀Respectively For [(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).

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

According to the 7.2.3 articles and the 8.1.1 articles relevant regulations in standard GB/T 3767-2016, hemisphere used by testing Measuring surface and sound source reference body has the coordinate origin of same orientation, that is, is located at reference body and its void in adjacent reflecting surface It is the hemisphere face that a measurement radius is r as the cabinet center (origin O in Fig. 4~Fig. 6) constituted；Wherein r >=2d₀And 16.0m≥r≥1.0m。

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 measuring surface is a complete hemisphere and area S=2 π r², measure radius r=2.0m；Corresponding microphone position battle array Column such as Fig. 4 shows that each measuring point coordinate is shown in Table 1.

Note: rinsing noise in view of toilet seat has stronger directive property, when experiment only relates to a plane of reflection, if The A weighted sound pressure level variation range (i.e. the difference of highest sound level and minimum sound level) measured at ten basic microphone positions is super 10dB is crossed, then adds additional microphone position, coordinate is the point that number is 11~20 in table 1 and Fig. 4.

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 measuring surface is 1/2 hemisphere and area S=π r², measure radius r=3.0m (the long l of sound source reference body₁, i.e., from wall to The distance of corresponding reference body front end face)；Corresponding microphone position array is as shown in figure 5, each measuring point coordinate is shown in Table 2.

Note: if the A weighted sound pressure level variation range measured at 2,3,6,7 and 9 five basic microphone positions is more than 5dB then adds additional microphone position；Its coordinate is four points that number is 11,14,15,18 in table 2.

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 measuring surface is 1/4 hemisphere and area S=π r²/ 2, measure radius r=3.0m (the long l of reference body₁With wide l₂, i.e., from two Distance of the face wall to corresponding reference body opposite face)；Corresponding microphone position array is as shown in fig. 6, each measuring point coordinate is shown in Table 3.

Note: if the A weighted sound pressure level variation range measured at 1,2 and 3 three basic microphone position is more than 3dB, Then add additional microphone position；Its coordinate is three points that number is 4,5,6 in table 3.

(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 hemisphere envelope sound source that selection is mutually applicable in, which measures surface and calculates it, measures radius r；According to The microphone position array on selected hemisphere measurement surface, calculates each measuring point coordinate and records.

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 using space in test cabinet Volume meet ceramic pedestal pan sample installation requirement to be measured, and have needed for pre-washing function to/drainage condition, test water Static pressure is controllable；Wherein background noise is not more than 16dB (A) in semi-anechoic room, is capable of providing proximate freedom field above reflecting surface Acoustic condition, the re-testing periods be no more than 5 years；Background noise is not more than 25dB (A) in reverberation chamber, and the reverberation time is between 5s~6s In range.

3.5 in the semi-anechoic room or reverberation chamber for meeting above-mentioned requirements, and the microphone position on surface is measured according to selected hemisphere Array is set, each measuring point coordinate is positioned；Tripod is moved at point position and will be provided with associated acoustic performance simultaneously Sound level meter be 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 measure 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 slow time character of weighting " S " of sound level measures the cumulative percent time average sound pressure of ambient noise on selected hemisphere measurement surface Grade L_pAi(B)(10)And it records；It is continuously measured 3 times in each microphone position, its arithmetic mean of instantaneous value is taken to make an uproar as background at the position The sound-pressure-level measurement value of sound.If the difference of sound pressure level measured by 3 times is greater than 0.5dB at each position, re-measures and remember Record.

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.It is surveyed in hemisphere 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 product Divide 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_1A=-10lg (1-10^{-0.1△LpA(10)})………………………………………………………(5)

K_2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... ... (6)

In formula:

N_M--- hemisphere 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；

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

--- under the standard meteorological conditions that atmospheric pressure is 101.325kPa, temperature is 23.0 DEG C, every group of landing The average value of the A weighted cumulative percent acoustic energy grade of 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,atm3(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 hemisphere measurement i-th of surface microphone position_eA toilet seat punching Wash in noise emission event q-th of 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 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 hemisphere measurement surface_eA toilet seat rinses noise The average value of the A weighted single event cumulative percent time integral sound pressure level of transmitting eventAnd its A weighted accumulative hundred Score acoustic energy grade L_JA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseCalculating knot Fruit then round numbers.

4.3 uncertainties of measurement: this patent method provides that console mode ceramic pedestal pan rinses noise A on hemisphere measurement surface The repeatability standard deviation σ of weighted single event cumulative percent time integral sound pressure level measurement result_omcUpper limit value is not more than 1.5dB.Related content in reference standard GB/T 3767-2016, it is real by same position in a complete normal flush cycle Personnel are tested using 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 a kind of hemisphere measurement surfaceIt carries out 6 times Duplicate measurements (for each duplicate measurements, toilet seat sample must be reinstalled and adjust positioning), and measurement result is carried on the back Scape noise correction.Repeatability standard deviation σ_omcCalculation formula are as follows:

In formula:

(5) performance judgment

5.1, according to national environmental protection specification and products standards requirement, take following classification criterion:

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 work as some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)3 sample wash are organized greater than this Noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10% when, need to extract one group of sample again It repeats to test；The two groups of toilet seat samples in front and back are calculated under the conditions of specific static pressure, using the A weighted equivalent sound level of sound level meter The flushing noise cumulative percent acoustic energy grade L that fast time character of weighting " F " is measured through hemisphere measurement surface method_JA(10)Arithmetic Average valueIf some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Greater than this two groups of 6 samples Rinse noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining seat Closet sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous valueIt makes pottery as this group of console mode Porcelain toilet seat sample wash noise rating 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.

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: 0 DEG C ~ 100 DEG C of range, scale 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, the flushing noise of console mode ceramic pedestal pan is detected using hemisphere measurement surface method, Coherent detection data and calculated result are shown in Table 4.

4 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 hemisphere measurement surface determine；(3) sound-pressure-level measurement；(4) acoustic energy grade calculate and ambient noise, test environment it is gentle as Condition amendment；(5) evaluation；It is characterized in that, the fast time character of weighting of the A weighted equivalent sound level using sound level meter " F " measures on surface with cumulative percent acoustic energy grade L hemisphere_JA(10)The console mode ceramic pedestal pan of characterization rinse noise into The accurate quantitative detection of row, 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 hemisphere answered measures surface and is really sized, and specifies the coordinates of microphone position array on different measurement surfaces；

(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；It is measured on selected hemisphere measurement surface 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_pAi(B)(10)；Then in the test static pressure of 0.35MPa ± 0.05MPa Under the conditions of, start flushometer, N continuously is repeated to toilet seat sample at the hemisphere measurement each microphone position in surface_eSecondary punching Wash operation.For different washing water quantity test requests, in normal flush cycle (half punching or Quan Chong), using sound level meter The fast time character of weighting " F " of A weighted equivalent sound level measures on selected hemisphere measurement surface q-th at i-th of microphone position Rinsing noise emission event, (each flush cycle can be considered an individual noise emission 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 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 L that grade meter measures on selected hemisphere measurement surface_pAi(B)(10)With 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 meter Weigh single event cumulative percent time integral sound pressure level L '_{EAi,q(ST)(10)}As basic data, calculate on hemisphere measurement surface The average value of the A weighted cumulative percent time average sound pressure level of ambient noiseAnd continuous N at each microphone position_e A toilet seat rinses the average value of the A weighted single event cumulative percent time integral sound pressure level of noise emission event L′_EAi(ST)(10)；It is derived from continuous N on hemisphere measurement surface simultaneously_eA toilet seat rinses the A weighted single of noise emission event The average value of event cumulative percent time integral sound pressure levelBy to background noise modification value K_1A, test environment repair Positive value K_2AAnd meteorological condition correction value C₁、C₂Influence analyzed, obtain in normal flush cycle (half punching or Quan Chong) half Ball measures continuous N on surface_eA toilet seat rinses the A weighted single event cumulative percent time integral sound of noise emission event It arbitrarily downgradesAnd the A weighted that each console mode ceramic pedestal pan sample wash noise under the conditions of specific static pressure is calculated is tired Count percentage acoustic energy grade L_JA(10)And the average value of every group of sample wash noise A weighted cumulative percent acoustic energy gradeThe clearly corresponding data revision of the convention requires and uncertainty of measurement range simultaneously；

In evaluation of result:

Using hemisphere measurement surface method under the test static pressure of 0.35MPa ± 0.05MPa, in normal flush cycle (half punching or After Quan Chong) the flushing noise of console mode ceramic pedestal pan sample is tested, when some sample wash noise A weighted adds up percentage Number 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 ceramic pedestal pan sample Under the conditions of specific static pressure, surface is measured through hemisphere using the fast time character of weighting " F " of the A weighted equivalent sound level of sound level meter The flushing noise cumulative percent acoustic energy grade L that 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 weighted cumulative percent acoustic energy grades L_JA(10)Arithmetic mean of instantaneous value10%, then abandon it；Take remaining toilet seat sample wash noise A weighted cumulative percent sound energy Magnitude L_JA(10)Arithmetic mean of instantaneous valueEvaluation index as this group of console mode ceramic pedestal pan sample wash noise.

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, using the suitable flange of size by its drainage pattern by heel row formula It is adjusted to lower-discharging type), according to the test water system standardization of water tank type closet as defined in the 8.8.2.1 articles in GB 6952-2015 Debugging routine debugs the cistern water supply system of toilet seat sample to be measured；The working water level of flush box can satisfy just 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 hemisphere 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 hemisphere measurement surface and its microphone position array: according to the 7.2.3 articles in standard GB/T 3767-2016 With the 8.1.1 articles relevant regulations, the measurement surface of hemisphere used by testing and sound source reference body have the coordinate of same orientation former Point is one and measures radius as the half of r that is, positioned at the cabinet center that reference body and its virtual image in adjacent reflecting surface are constituted Spherical surface；Wherein r >=2d₀And 16.0m >=r >=1.0m.If being located at one when console mode ceramic pedestal pan sample to be measured is installed instead It penetrates in plane, then measuring surface is a complete hemisphere and area S=2 π r², measure radius r=2.0m；Corresponding microphone Position array co-ordinates are shown in Table 1, and (rinsing noise in view of toilet seat has stronger directive property, if in ten basic microphone positions The A weighted sound pressure level variation range that place measures is more than 10dB, then adds additional microphone position；Its coordinate is that number is in table 1 11~20 point).If placed when console mode ceramic pedestal pan sample to be measured is installed against two planes of reflection, surface is measured For 1/2 hemisphere and area S=π r², measure radius r=3.0m (the long l of sound source reference body₁, i.e., before from wall to corresponding reference body The distance of end face)；Corresponding microphone position array co-ordinates are shown in Table 2 (if in 2,3,6,7 and 9 five basic microphone positions The A weighted sound pressure level variation range that place measures is more than 5dB, then adds additional microphone position；Its coordinate is that number is in table 2 11,14,15,18 four points).If placed when console mode ceramic pedestal pan sample to be measured is installed against three planes of reflection, Then measuring surface is 1/4 hemisphere and area S=π r²/ 2, measure radius r=3.0m (the long l of reference body₁With wide l₂, i.e., from two sides Distance of the wall to corresponding reference body opposite face)；Corresponding microphone position array co-ordinates are shown in Table 3 (if in 1,2 and 3 three base The A weighted sound pressure level variation range that this microphone position place measures is more than 3dB, then adds additional microphone position；Its coordinate is Three points that number is 4,5,6 in table 3).

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 hemisphere envelope sound source that selection is mutually applicable in, which measures surface and calculates it, measures radius r；According to selected half Ball measures the microphone position array on surface, calculates each measuring point coordinate and records；

(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 using the appearance in space in test cabinet 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 microphone position battle array on surface is measured according to selected hemisphere Column, position each measuring point coordinate；Tripod is moved at point position and will be provided with the sound of associated acoustic performance simultaneously Grade meter 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 measurement table 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 the cumulative percent time average sound pressure level of ambient noise on selected hemisphere measurement surface L_pAi(B)(10)And it records；It is continuously measured 3 times in each microphone position, takes its arithmetic mean of instantaneous value as ambient noise at the position Sound-pressure-level measurement value.If the difference of sound pressure level measured by 3 times is greater than 0.5dB at each position, re-measures and 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.Surface is measured in hemisphere N continuously is repeated to toilet seat sample at each microphone position_eSecondary flushing operation, using the A weighted equivalent sound level of sound level meter Fast time character of weighting " F " measures q-th of corresponding position flushing noise emission event respectively, and (each flush cycle can be considered one A 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 (5) It is modified.

K_1A=-10lg (1-10^{-0.1△LpA(10)})……………………………………………………………(5)

K_2A=l0lg (l+4S/A) ... ... ... ... ... ... ... ... ... ... ... ... ... (6)

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=0.16V/T_n…………………………………………………………………………(8)

L_JA _ref,atm(10)=L_JA(10)+C₁+C₂…………………………………………………………(13)

In formula:

L′_Ei(ST)(10)--- in normal flush cycle, the N at hemisphere measurement i-th of surface microphone position_eThe secondary toilet seat measured Device 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 the pendulous frequency (N of noise emission event at the hemisphere measurement each microphone position in surface_e ≥5)；

L′_{EAi,q(ST)(10)}--- in normal flush cycle, the toilet seat measured at the microphone position of i-th of surface is measured in hemisphere Flushing q-th of event of noise (q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time integral sound pressure level, it is single Position is decibel (dB)；

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

N_M--- hemisphere measures surface microphone position number；

--- in normal flush cycle, in the ambient noise A weighted cumulative percent measured on hemisphere measurement surface Between average sound pressure level average value, unit be decibel (dB)；

L_pAi(B)(10)--- in normal flush cycle, the ambient noise A measured at the microphone position of i-th of surface is measured in hemisphere 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 wash noise that surface method measures is measured through hemisphere A weighted single event cumulative percent time integral sound pressure level, unit be 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 hemisphere measurement surface method measures in phase, unit are 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 pottery The average value of the A weighted cumulative percent acoustic energy grade of porcelain toilet seat 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 hemisphere measurement i-th of surface microphone position_eA toilet seat flushing is made an uproar Q-th event in acoustie emission event (q=1,2 ... N_e；N_e>=5) A weighted single event cumulative percent time integral acoustic pressure Grade 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 hemisphere measurement surface_eA toilet seat rinses noise The average value of the A weighted single event cumulative percent time integral sound pressure level of transmitting eventAnd its A weighted is accumulative Percentage acoustic energy grade L_JA(10)With the A weighted cumulative percent time average sound pressure level average value of ambient noiseMeter Calculate result then round numbers；

(3) uncertainty of measurement: this patent method provides that console mode ceramic pedestal pan rinses noise A weighted on hemisphere measurement surface The repeatability standard deviation σ of single event cumulative percent time integral sound pressure level measurement result_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 Using same sound level meter, to selected by the same part console mode ceramic pedestal pan sample of the same installed position same half Ball measures the average value of A weighted single event cumulative percent time integral sound pressure level on surface6 repetitions are carried out to survey It measures (for each duplicate measurements, toilet seat sample must be reinstalled and adjust positioning), and ambient noise is carried out to measurement result Amendment.Repeatability standard deviation σ_omcCalculation formula are as follows:

In formula:

--- console mode ceramic pedestal pan rinses noise jth time duplicate measurements and the hemisphere measurement after background noise modification The average value of A weighted single event cumulative percent time integral sound pressure level on surface；--- by all duplicate measurements knots The Arithmetical average sound pressure grade that fruit is calculated.

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:

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) as some sample wash noise A weighted cumulative percent acoustic energy grade L_JA(10)3 sample wash noise A are organized greater than this Weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous value10% when, need to extract one group of sample again and repeat Experiment；Calculate front and back two groups of toilet seat samples under the conditions of specific static pressure, using sound level meter A weighted equivalent sound level it is fast when Between character of weighting " F " through the flushing noise cumulative percent acoustic energy grade L that measures of hemisphere measurement surface method_JA(10)Arithmetic average 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 Product rinse noise A weighted cumulative percent acoustic energy grade L_JA(10)Arithmetic mean of instantaneous valueAs this group of console mode ceramics toilet seat Device sample wash noise rating index.