CN210037171U - Laboratory for subjective and objective evaluation of acoustic performance of hearing protector - Google Patents
Laboratory for subjective and objective evaluation of acoustic performance of hearing protector Download PDFInfo
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- CN210037171U CN210037171U CN201920627513.3U CN201920627513U CN210037171U CN 210037171 U CN210037171 U CN 210037171U CN 201920627513 U CN201920627513 U CN 201920627513U CN 210037171 U CN210037171 U CN 210037171U
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Abstract
The utility model discloses a protect hydrophone acoustic performance subjective and objective evaluation laboratory, the laboratory comprises a laboratory, the sound absorption furred ceiling has been laid in the laboratory, be provided with the sound insulation board in the laboratory and cut off, the sound insulation board cut off will evaluation district and control area are separated into in the laboratory, be provided with subjective and objective evaluation room in the evaluation district, be provided with the ventilation silencer on the subjective and objective evaluation room lateral wall, be provided with subjective test equipment and objective test equipment in the subjective and objective evaluation room, be provided with the control cabinet in the control area, the laboratory the sound insulation door has all been seted up on the sound insulation board cuts off. Compared with the prior art, the utility model discloses it is strong to have the practicality, and beneficial effect such as a room is multi-purpose, practice thrift space, price/performance ratio height.
Description
Technical Field
The utility model relates to a decorate section bar technical field, in particular to protect hydrophone acoustic performance subjective and objective evaluation laboratory.
Background
The hearing protector, often called an ear protector, is a personal protective article for reducing noise hazards, and is widely applied to various production workshops and various noise working areas. Common in the market have earplug and ear muff two categories, are applicable to different occasions, need consider when selecting the suitable hearing protector objective factors such as the noise reduction performance of hearing protector, more will consider subjective factors such as wearer's comfort level simultaneously.
At present, in a domestic labor protection system, no professional hearing protector acoustic performance test laboratory exists, most of the existing test rooms are simple sound insulation rooms, the sound field performance of the existing test rooms cannot meet the test standard requirements, and the main laboratory and the objective laboratory are not shared.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a protect hydrophone acoustic performance subjective and objective evaluation laboratory for protect subjective evaluation and the objective evaluation of hydrophone performance can accurately accomplish, economy is high-efficient in same laboratory that accords with sound field capability test standard.
In order to achieve the above object, the utility model provides a following technical scheme: a laboratory for subjective and objective evaluation of acoustic performance of a hearing protector comprises a laboratory, wherein a sound absorption suspended ceiling is laid in the laboratory, and the laboratory is characterized in that a sound insulation board partition is arranged in the laboratory and divides the laboratory into an evaluation area and a control area; an objective evaluation chamber is arranged in the evaluation area, a ventilation silencer is arranged on the outer side wall of the objective evaluation chamber, and subjective test equipment and objective test equipment are arranged in the objective evaluation chamber; a control console is arranged in the control area; and sound insulation doors are arranged on the laboratory and the sound insulation plate partition.
In order to guarantee the sound insulation performance of the subjective and objective evaluation room and ensure that a sound field meets the test standard, the subjective and objective evaluation room is formed by enclosing sound insulation connecting plates through connecting pieces in pairs, a floating floor platform is paved in the subjective and objective evaluation room, a sound absorption carpet is paved on the floating floor platform, sound absorbers are paved on the inner sides of the sound insulation connecting plates on the four walls and the top in the subjective and objective evaluation room, and a sound insulation door is arranged on one side wall of the subjective and objective evaluation room. The utility model discloses in, select for use the H groove as the connecting piece, with two liang of connections of sound insulation connecting plate together.
In order to realize the subjective testing function of the subjective and objective evaluation room, preferably, the subjective testing device includes an S-speaker and a testing chair, the S-speaker is located at a side of the sound insulation connecting plate close to the control area in the room, and the testing chair is located in the middle of the subjective and objective evaluation room. The utility model discloses in, chooseed for use two S speakers, two S speakers 'linear distance is more than or equal to 1m position, and the line in the center of test chair and two S speakers' center is 90 contained angles.
In order to realize the objective testing function of the subjective and objective evaluation room, it is preferable that the objective testing equipment includes a JBL speaker and an ATF artificial head, the JBL speaker is located at a corner of the laboratory, and the ATF artificial head is located in the middle of the subjective and objective evaluation room. The utility model discloses in, chooseed for use four JBL speakers, be located four corners in laboratory respectively, ATF artificial head is located the center department of four JBL stereo set lines.
In order to realize the testing function of the subjective and objective evaluation room, it is preferable that a transmission signal line is arranged in the sound insulation connecting plate and connects the subjective and objective evaluation room with the testing equipment in the console.
In order to facilitate the control of the subjective and objective evaluation test on the console, preferably, the console is provided with a subjective test audiometer, an objective test signal generator, a data processing computer and a power amplifier.
Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are as follows:
(1) the laboratory realizes that the subjective evaluation and the objective evaluation of the performance of the hearing protector are finished in the same laboratory, and is economical and efficient;
(2) the sound insulation performance of the ordinary room of make full use of self to through the acoustics fitment, can become this laboratory, build the sound insulation laboratory through the modularization sound-proof board in its inside, fully embody its economic nature, and have high quality and high accuracy performance concurrently.
(3) The laboratory fully considers the influence of the sense of a tester on the test precision, improves the environment by utilizing the existing conditions, reduces the sense error of people, and has more accurate test.
Drawings
Fig. 1 is a schematic top view of the present invention;
fig. 2 is a schematic view of the overall sound insulation arrangement in the laboratory 1 room in this embodiment;
FIG. 3 is a schematic view of the sound insulation arrangement longitudinal section structure of the subjective and objective evaluation room 5 of the present invention;
fig. 4 is a schematic structural diagram of the subjective and objective evaluation room 5 and the console 9 of the present invention.
In the figure:
1. a laboratory; 2. The sound insulation plate is used for isolating; 3. An evaluation area; 301. A resting area for the person to be tested; 4. A control area; 5. A subjective and objective evaluation room; 6. A ventilation muffler; 7. Subjective test equipment; 8. Objective test equipment; 9. A console; 10. A sound-proof door; 20. building a ground platform in a floating manner; 21. A sound insulation connecting plate; 22. Sound absorbing carpet; 23. A sound absorber; 24. A sound absorbing ceiling; 25; a sound insulation window; 701. s, a loudspeaker; 702. A test chair; 801. A JBL speaker; 802. ATF artificial head; 901. Subjectively testing an audiometer; 902. an objective test signal generator; 903. A data processing center; 904. And (5) power amplification.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a hearing protector acoustic performance subjective and objective evaluation laboratory comprises a laboratory 1, and a sound absorption suspended ceiling 24 is laid in the laboratory 1, and is characterized in that a sound insulation board partition 2 is arranged in the laboratory, and the laboratory 2 is divided into an evaluation area 3 and a control area 4 by the sound insulation board partition 2; a subjective and objective evaluation chamber 5 is arranged in the evaluation area 3, a ventilation silencer 6 is arranged on the outer side wall of the subjective and objective evaluation chamber 5, and subjective testing equipment 7 and objective testing equipment 8 are arranged in the subjective and objective evaluation chamber 5; a control console 9 is arranged in the control area 4; the laboratory 1 and the sound insulation board partition 2 are both provided with sound insulation doors 10.
In order to ensure the sound insulation performance of the subjective and objective evaluation chamber 5 and ensure that a sound field meets a test standard, further, the subjective and objective evaluation chamber 5 is formed by connecting and enclosing sound insulation connecting plates 21 pairwise through connecting pieces, a floating platform 20 is laid in the subjective and objective evaluation chamber 5, a sound absorption carpet 22 is laid on the floating platform 20, sound absorbers 23 are laid on the inner sides of the sound insulation connecting plates 21 on the four walls and the top in the subjective and objective evaluation chamber 5, and a sound insulation door 10 is arranged on one side wall of the subjective and objective evaluation chamber 5. In the embodiment, an H-shaped groove is used as a connecting piece to connect the sound insulation connecting plates 21 two by two.
In order to realize the subjective test function of the subjective and objective evaluation room 5, further, the subjective test device 7 includes an S-speaker 701 and a test chair 702, the S-speaker 701 is located at the side of the sound insulation connection board near the control area in the room, and the test chair 702 is located in the middle of the subjective and objective evaluation room 5. In the embodiment, two S loudspeakers are selected, the linear distance of the two S loudspeakers is more than or equal to 1m, and an included angle of 90 degrees is formed between the center of the test chair and the connecting line of the centers of the two S loudspeakers.
In order to realize the objective testing function of the subjective and objective evaluation room 5, further, the objective testing device 8 includes a JBL speaker 801 and an ATF artificial head 802, the JBL speaker 801 is located at the corner of the laboratory, and the ATF artificial head 802 is located in the middle of the subjective and objective evaluation room 5. In this embodiment, four JBL speakers 801 are selected and located at four corners of the laboratory, respectively, and the ATF artificial head 802 is located at the center of the connection line of the four JBL sounds 801.
In this embodiment, the subjective testing device 7 selects two S speakers 701, the testing chair 702 is located on the perpendicular bisector of the two S speakers 701, and the two S speakers 701 and the center connecting line of the testing chair 702 form an angle of 90 °; the objective test equipment 8 selects four JBL loudspeakers 801 which are uniformly distributed on the four corner walls of the subjective and objective evaluation room 5, and the ATF artificial head 802 is positioned at the intersection of the diagonal connecting lines of the JBL loudspeakers 801.
In order to realize the test function of the subjective and objective evaluation room, a transmission signal line is further arranged in the sound insulation connecting plate 21 and is used for connecting the subjective and objective evaluation room with the test equipment in the console.
In order to facilitate the control of the subjective and objective evaluation tests on the console 9, the console 9 is further provided with a subjective test audiometer 901, an objective test signal generator 902, a data processing computer 903 and a power amplifier 904.
In the embodiment, the building main body of the laboratory is located beside a road, in order to ensure the sound field condition and the background noise data of the subjective and objective evaluation room 5, the sound insulation window 25 is additionally arranged on the wall and the window close to the road, the area close to the sound insulation window 25 is set as the control area 4, the subjective and objective evaluation room 5 is set in the area far away from the sound insulation window 25, and meanwhile, the rest area 301 of a person to be measured is arranged beside the subjective and objective evaluation room 5 in the evaluation area 3, so that the convenience is brought to the person to be measured.
Although preferred embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A laboratory for subjective and objective evaluation of acoustic performance of a hearing protector comprises a laboratory (1), wherein a sound absorption suspended ceiling (24) is laid in the laboratory (1), and is characterized in that a sound insulation board partition (2) is arranged in the laboratory (1), and the laboratory (1) is divided into an evaluation area (3) and a control area (4) by the sound insulation board partition (2);
an objective evaluation chamber (5) is arranged in the evaluation area (3), a ventilation silencer (6) is arranged on the outer side wall of the objective evaluation chamber (5), and subjective testing equipment (7) and objective testing equipment (8) are arranged in the objective evaluation chamber (5);
a control console (9) is arranged in the control area (4);
and sound insulation doors (10) are respectively arranged on the laboratory (1) and the sound insulation plate partition (2).
2. The hearing device acoustic performance subjective and objective evaluation laboratory of claim 1 wherein: the utility model discloses a sound insulation door, including subjective and objective evaluation room (5), the two liang of connections of sound insulation connecting plate (21) enclose to close and form in subjective and objective evaluation room (5), laid in subjective and objective evaluation room (5) and floated platform (20), it is equipped with sound absorption carpet (22) to float platform (20) upper berth, sound absorber (23) have been laid to sound insulation connecting plate (21) inboard at four walls and top in subjective and objective evaluation room (5), sound insulation door (10) have been seted up to one side wall in subjective and objective evaluation room (5).
3. The hearing device acoustic performance subjective and objective evaluation laboratory of claim 2 wherein: the subjective testing device (7) comprises an S loudspeaker (701) and a testing chair (702), wherein the S loudspeaker (701) is positioned on one side of the indoor part close to the control area (4), and the testing chair (702) is positioned in the middle of the subjective and objective evaluation room (5).
4. The hearing device acoustic performance subjective and objective evaluation laboratory of claim 3 wherein: the objective test equipment (8) comprises a JBL loudspeaker (801) and an ATF artificial head (802), the JBL loudspeaker (801) is located at an indoor sound insulation connecting plate (21), and the ATF artificial head (802) is located in the middle of the subjective and objective evaluation room (5).
5. The hearing device acoustic performance subjective and objective evaluation laboratory of claim 4 wherein: and a signal transmission line is arranged in the sound insulation connecting plate (21).
6. The hearing device acoustic performance subjective and objective evaluation laboratory of claim 5 wherein: the control console (9) is provided with a subjective test audiometer (901), an objective test signal generator (902), a data processing center (903) and a power amplifier (904).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920627513.3U CN210037171U (en) | 2019-05-05 | 2019-05-05 | Laboratory for subjective and objective evaluation of acoustic performance of hearing protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920627513.3U CN210037171U (en) | 2019-05-05 | 2019-05-05 | Laboratory for subjective and objective evaluation of acoustic performance of hearing protector |
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| CN210037171U true CN210037171U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920627513.3U Active CN210037171U (en) | 2019-05-05 | 2019-05-05 | Laboratory for subjective and objective evaluation of acoustic performance of hearing protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466345A (en) * | 2021-06-04 | 2021-10-01 | 国网山东省电力公司电力科学研究院 | In-ear type hearing protector sound insulation measurement system |
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2019
- 2019-05-05 CN CN201920627513.3U patent/CN210037171U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466345A (en) * | 2021-06-04 | 2021-10-01 | 国网山东省电力公司电力科学研究院 | In-ear type hearing protector sound insulation measurement system |
| CN113466345B (en) * | 2021-06-04 | 2024-03-26 | 国网山东省电力公司电力科学研究院 | In-ear type hearing protector sound insulation measuring system |
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