CN2891562Y - Weatherproof outdoor test capacitor microphone - Google Patents
Weatherproof outdoor test capacitor microphone Download PDFInfo
- Publication number
- CN2891562Y CN2891562Y CN 200620102531 CN200620102531U CN2891562Y CN 2891562 Y CN2891562 Y CN 2891562Y CN 200620102531 CN200620102531 CN 200620102531 CN 200620102531 U CN200620102531 U CN 200620102531U CN 2891562 Y CN2891562 Y CN 2891562Y
- Authority
- CN
- China
- Prior art keywords
- condenser microphone
- static
- outdoor test
- excitation apparatus
- round
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses an all-weather outdoor testing capacitance microphone which is an integral structure coupled with an electrostatic actuating apparatus. A self electrostatic actuator is capable of directly accomplishing the routine acoustic calibration after connecting with a high voltage supply and the diaphragm vibration of the testing capacitance microphone resulting from the attaching and detaching processes of the electrostatic actuating apparatus is avoided, the space between the testing capacitance microphone diaphragm and an electrostatic actuating plate in the electrostatic actuating apparatus is fixed, so that the acoustic calibration precision of the testing capacitance microphone is ensured and the all-weather outdoor monitoring precision of the testing capacitance microphone can be improved. The outdoor testing capacitance microphone structure of the utility model overcomes the structural effects of the quantity value delivery with an outer sound level calibrator, in addition has a self preamplifier, thereby matching different types of sound level meter, and achieving convenient and simple operation.
Description
Affiliated field
The utility model belongs to the environmental monitoring acoustic equipment, is particularly useful for the condenser microphone of the long-term on-line monitoring of outdoor environment noise.
Background technology
At present, the outdoor universal test condenser microphone of prior art, the daily acoustic calibration that in its very long outdoor use, often need meet its measurement standard required precision, when outdoor universal test condenser microphone is done daily calibration, usually on microphone, add a static excitation apparatus, send static by this static excitation apparatus and finish daily acoustic calibration, in addition, in order to guarantee the precision of daily acoustic calibration, also need regularly to adopt sound level calibrator that the outdoor test condenser microphone is carried out acoustic calibration.There is following defective in the outdoor universal test condenser microphone that adds a static excitation apparatus that prior art adopts:
(1) be to be connected with the testing capacitor microphone owing to outdoor universal test condenser microphone adds the static excitation apparatus by adapter; can't directly carry out acoustic calibration; when adopting sound level calibrator to carry out acoustic calibration; must dismantle static excitation apparatus and adapter; connect the condenser microphone protective cover.
(2) outdoor universal test condenser microphone, to add the static excitation apparatus when needing acoustic calibration at every turn, after finishing, acoustic calibration dismantles the static excitation apparatus again, each assembling and dismounting manual operation, the rigging position of static excitation apparatus and gap become because of the people, directly influence the calibration accuracy that adds the static excitation apparatus on the testing capacitor microphone.
(3) under the outdoor environment, the operation of installation and removal static excitation apparatus is very inconvenient on the testing capacitor microphone, to dismantle the windproof outer cover of microphone earlier, add adapter, refill the static excitation apparatus, finish sound level calibration after, again static excitation apparatus and adapter are pulled down, again load onto the windproof outer cover of microphone, manual operation speed is slow, and effect is low.
(4) when the testing capacitor microphone being carried out the sound level calibration, adjunction and dismounting static excitation apparatus all can make the diaphragm of testing capacitor microphone be subjected to external force to cause vibration at every turn, thereby influence is to its life-span and certainty of measurement.
(5) structure of testing capacitor microphone is affected the transmission of quantity value relation between it and the outside sound level calibrator, be difficult for and the sound level meters of various models supporting.
Summary of the invention
In order to overcome the above-mentioned defective of prior art, the utility model discloses a kind of round-the-clock outdoor test condenser microphone, testing capacitor microphone and static excitation apparatus are structure as a whole, carrying recording calibrates automatically, overall dimension meets the requirement of general sound level calibrator, can directly carry out acoustic calibration with general sound level calibrator, various model standard sound level meters can directly be connected on above the condenser microphone, mount and dismount easy to operate simple and direct.
Round-the-clock outdoor test condenser microphone is: constitutes by condenser microphone 51, static excitation apparatus 52, protective cover 53, shell 54 and socket 55, and the external high pressure source 57 that static acoustic calibration also need use, wherein:
The critical piece of condenser microphone 51 comprises diaphragm 511, shell 512;
The static excitation apparatus of static excitation apparatus 52 for carrying, critical piece comprises that static activation plate 521, dead ring 522, static excite thimble 523 and high-voltage connection 524; Static activation plate 521 usefulness screws are fastened on the dead ring 522;
The outdoor test condenser microphone is from the static electrification excitation apparatus, avoided the dismounting of static excitation apparatus and adapter and by the influence of dismounting vibration to the condenser microphone diaphragm, the certainty of measurement of outdoor test condenser microphone is guaranteed preferably.
Described round-the-clock outdoor test condenser microphone is: the outdoor test condenser microphone front end of condenser microphone and static excitation apparatus integrative-structure is a cylindrical protective cover 53, and outside dimension is the desired size of general sound level calibrator coupling cavity.
The outdoor test condenser microphone need not be removed the static excitation apparatus.Protective cover 53 is used for protecting the static activation plate, avoids user's false touch high pressure, and the external diameter of protective cover 53 satisfies the requirement of general sound level calibrator coupling cavity simultaneously, can directly insert the coupling cavity of sound level calibrator.Available high-precision sound level calibrator guarantees the certainty of measurement of outdoor test condenser microphone to demarcating from the static electrification excitation apparatus.
Described round-the-clock outdoor test condenser microphone is: the spacing d between the static activation plate 521 of the static excitation apparatus that carries and the diaphragm 511 of condenser microphone 51 determines that by the physical dimension of dead ring 522 the d value is 0.4mm.
Spacing is fixed between the static activation plate of static excitation apparatus and the condenser microphone diaphragm, can accurately demarcate the static excitation apparatus, avoided the dismounting of static excitation apparatus and adapter and the change of static activation plate and condenser microphone diaphragm spacing, the conventional static of outdoor test condenser microphone excites precision to be guaranteed preferably.
Described round-the-clock outdoor test condenser microphone, be: the outdoor test condenser microphone has preamplifier 57, the input of preamplifier 57 connects the output of condenser microphone 51, a signal output plug of the output gang socket 55 of preamplifier 57.
Round-the-clock outdoor test condenser microphone need not add the access preamplifier when acoustic calibration, convenient outdoor test, and, help improving the accuracy of measurement data.
Described round-the-clock outdoor test condenser microphone, be: the high-voltage connection 524 1 of static excitation apparatus terminates to the thimble 523 of static excitation apparatus, the other end is received a pin of socket 55, be connected on external high pressure source 57 through socket 55 lead-out wires, improved reliability and fail safe that static excites calibration.
Described round-the-clock outdoor test condenser microphone, be: the composition of round-the-clock outdoor test condenser microphone also comprises hurricane globe 102, hurricane globe 102 is socketed in the outside of outdoor test condenser microphone 101 shells, and wherein hurricane globe 102 is made up of fan housing 1021, fan housing liner 1022 and bird-proof needle 1023.
Advantage of the present utility model is:
(1) installation and removal that static excitation apparatus and adapter and windproof outer cover are saved in the calibration of testing capacitor microphone under the outdoor environment are easy to operate, the effect height.
(2) calibration of outdoor test condenser microphone sound level is finished the sound level calibration automatically by the recording that carries, avoided the change in testing capacitor microphone and static excitation apparatus rigging position and gap, the testing capacitor microphone carries the sound level calibration accuracy of recording and the certainty of measurement of testing capacitor microphone is guaranteed preferably.
(3) when the testing capacitor microphone being carried out the sound level calibration, the static excitation apparatus adjunction of adjunction and the vibration that unloading process causes testing capacitor microphone matrix have been avoided, thereby, improved the certainty of measurement of testing capacitor microphone, prolonged the useful life of condenser microphone.
(4) solved and outside sound level calibrator between the structure influence of transmission of quantity value relation, realize and various model sound level meter supporting.
(5) the testing capacitor microphone can carry preamplifier, the accuracy of convenient outdoor test and assurance measurement data.
Description of drawings
Fig. 1 is the structural representation that outdoor test condenser microphone that prior art adds the static excitation apparatus adds the static excitation apparatus;
Fig. 2 adds the end view of the outdoor test condenser microphone structure of static excitation apparatus for Fig. 1 prior art;
Structural representation when Fig. 3 prior art outdoor test condenser microphone is calibrated with sound level calibrator;
Fig. 4 is Fig. 3 prior art outdoor test condenser microphone structure side view when calibrating with sound level calibrator;
Fig. 5 is the round-the-clock outdoor test condenser microphone of the utility model and from static electrification excitation apparatus example structure schematic diagram;
Fig. 6 is the round-the-clock outdoor test condenser microphone of Fig. 5 the utility model and from static electrification excitation apparatus example structure end view;
Fig. 7 is round-the-clock outdoor test condenser microphone of the utility model and the supporting connection diagram of sound level calibrator;
Fig. 8 is the static activation plate example structure schematic diagram of the round-the-clock outdoor test condenser microphone of the utility model from the static electrification excitation apparatus;
Fig. 9 is the static activation plate example structure cutaway view of the round-the-clock outdoor test condenser microphone of Fig. 8 the utility model from the static electrification excitation apparatus;
Figure 10 is that the round-the-clock outdoor test condenser microphone of the utility model puts hurricane globe example structure schematic diagram.
Among Fig. 1 and Fig. 2: 11-condenser microphone, 111-condenser microphone diaphragm, 12-static excitation apparatus, 121-static activation plate, 122-insulating trip, 123-high pressure connection, 124-high-voltage connection, 13-adapter.
Among Fig. 3～Fig. 4: 31-sound level calibrator, 311-sound level calibrator shell, 312-sound level calibrator coupling cavity, 32-protective cover.
Among Fig. 5 and Fig. 6: the static excitation apparatus that 51-condenser microphone, 511-diaphragm, 512-microphone case, 52-carry, 521-static activation plate, 522-dead ring, 523-static excite thimble, 524-high-voltage connection, 53-protective cover, 54-outdoor test condenser microphone shell, 55-socket, 57-high voltage source, the preamplifier that 56-carries.
Among Fig. 7: the sealing ring of 71-standard sound level calibrator, 711-standard sound level calibrator shell, 712-standard sound level calibrator coupling cavity;
Among Fig. 8: 81-static activation plate, 82-static activation plate installing hole;
Among Figure 10: 101-outdoor test condenser microphone, 102-hurricane globe, 1021-fan housing, 1022-fan housing liner, 1023-bird-proof needle, 103-output line, the wiring of 104-high voltage source.
Embodiment
What Fig. 1 and Fig. 2 provided is structural representation and the end view thereof that prior art outdoor test condenser microphone adds the static excitation apparatus, the static excitation apparatus 12 that adds of outdoor test condenser microphone 11 and tape relay head is that interior rib-loop by adapter 13 carries out mechanical connection, and the static activation plate 121 of static excitation apparatus 12 is decided with the rib-loop mechanical connection with the distance of the diaphragm 111 of outdoor test condenser microphone 11.Static excitation apparatus 12 is to join with high voltage source by high pressure connection 123 and high-voltage connection 124, and the outdoor test condenser microphone 11 that adds the static excitation apparatus is the coupling cavitys that can't insert general acoustic calibrator.When carrying out the sound level calibration with 31 pairs of prior art outdoor tests of general acoustic calibrator condenser microphone; that must unload tape relay head 13 adds static excitation apparatus 12; be the protection condenser microphone; also need connect protective cover 32; could insert coupling cavity, when calibrating shown in the structural representation as Fig. 3 prior art outdoor test condenser microphone with general acoustic calibrator 31.
Below in conjunction with accompanying drawing 5～Fig. 9 embodiment of the present utility model is further described:
The structure chart of the round-the-clock outdoor test condenser microphone of the utility model embodiment and end view thereof as shown in Figure 5 and Figure 6, it is made of condenser microphone 51, static excitation apparatus 52, protective cover 53, shell 54 and socket 55.The critical piece of condenser microphone 51 comprises diaphragm 511, microphone case 512, and the critical piece of static excitation apparatus 52 comprises that static activation plate 521, dead ring 522, static excite thimble 523 and high-voltage connection 524.The structural representation of static activation plate embodiment and end view thereof such as Fig. 8 and shown in Figure 9, static activation plate 521 usefulness screws are fastened on the dead ring 522.During installation; the condenser microphone 51 of in shell 54, packing into earlier; excite the dead ring 522 and the static with the fastening last static activation plate 521 of screw of static excitation apparatus 52 thimble 523 and high-voltage connection 524 to pack into again; and cover protective cover 53; interior rib-loop with protective cover 53 connects as one structure with static excitation apparatus 52 and condenser microphone 51 and shell 54, and the diaphragm 511 of condenser microphone and the spacing d between the static activation plate 521 fix.The diaphragm 511 and the spacing between the static activation plate 521 of condenser microphone are determined that by the physical dimension of the dead ring 522 of static excitation apparatus 52 spacing d value is preferably 0.4mm among the embodiment.The output of condenser microphone 51 is connected on the input of putting before the preamplifier circuit plate 57, and pin is drawn in the signal output of preceding output gang socket 55 of putting, and the high voltage source of high-voltage connection 524 gang sockets 55 is drawn pin, and is last, loads onto socket 55.
When round-the-clock outdoor test condenser microphone was done static acoustic calibration, socket 55 connected external high pressure source 57, directly carried out static acoustic calibration with regard to the available static excitation apparatus 52 that carries, by the holding wire output calibrating signal of socket 55.
Fig. 7 is round-the-clock outdoor test condenser microphone of the utility model and the supporting connection diagram of sound level calibrator.Punctual to the round-the-clock outdoor test condenser microphone school of uttering a word, outdoor test condenser microphone 51 is inserted the coupling cavity of sound level calibrator 71, as shown in Figure 7, carry out strict acoustic calibration with 71 pairs of acoustical signal outdoor tests of sound level calibrator condenser microphone 51 according to relevant criterion, after outdoor test condenser microphone 51 receives the standard acoustic signal that sound level calibrator 71 sends, by the holding wire output calibrating signal of socket 55.
The calibrating signal that the calibrating signal that will carry out when calibration sound output with sound level calibrator will be exported when using the static acoustic calibration that carries out from the static electrification excitation apparatus compares, and just can demarcate the performance of the static excitation apparatus that carries.
Figure 10 is that the round-the-clock outdoor test condenser microphone of the utility model puts hurricane globe example structure schematic diagram, when round-the-clock outdoor test condenser microphone is used for long-term outdoor test, hurricane globe 102 of socket on the shell of testing capacitor microphone 101 out of doors, fan housing 1021 on the hurricane globe 102 is the porous sponge, can reduce wind noise, fan housing liner 1022 makes hurricane globe 102 and outdoor test condenser microphone 101 well secured, and its bird-proof needle 1023 is used to prevent that birds from perching.
When round-the-clock outdoor test condenser microphone carries out acoustic calibration with the static excitation apparatus that carries, connect high voltage source with high voltage source wiring 104, from output line 103 output calibrating signals.
After round-the-clock outdoor test condenser microphone punctual with the high accuracy acoustic calibrator school of uttering a word, need be taken off hurricane globe 102, the outdoor test condenser microphone is inserted the coupling cavity of acoustic calibrator, from output line 103 output calibrating signals.
Claims (8)
1. round-the-clock outdoor test condenser microphone is characterized in that: constitutes by condenser microphone (51), static excitation apparatus (52), protective cover (53), shell (54) and socket (55), also comprises the external high pressure source (57) that static acoustic calibration uses, wherein:
The critical piece of condenser microphone (51) comprises diaphragm (511), shell (512);
The static excitation apparatus of static excitation apparatus (52) for carrying, critical piece comprises that static activation plate (521), dead ring (522), static excite thimble (523) and high-voltage connection (524); Static activation plate (521) is fastened on the dead ring (522) with screw;
Dead ring (522) connects as one structure by interior rib-loop with static excitation apparatus (52) and condenser microphone (51) and socket (55), and the spacing between diaphragm of condenser microphone (511) and the static activation plate (521) is fixed.
2. round-the-clock outdoor test condenser microphone according to claim 1; it is characterized in that: the outdoor test condenser microphone front end of condenser microphone and static excitation apparatus integrative-structure is cylindrical protective cover (53), and outside dimension is the desired size of general sound level calibrator coupling cavity.
3. round-the-clock outdoor test condenser microphone according to claim 1 and 2, it is characterized in that: the spacing d between the static activation plate (521) of the static excitation apparatus that carries and the diaphragm (511) of condenser microphone (51) determines that by the physical dimension of dead ring (522) the d value is 0.4mm.
4. round-the-clock outdoor test condenser microphone according to claim 1 and 2, it is characterized in that: the outdoor test condenser microphone has preamplifier (57), the input of preamplifier (57) connects the output of condenser microphone (51), a signal output plug of the output gang socket (55) of preamplifier (57).
5. round-the-clock outdoor test condenser microphone according to claim 3, it is characterized in that: the outdoor test condenser microphone has preamplifier (57), the input of preamplifier (57) connects the output of condenser microphone (51), a signal output plug of the output gang socket (55) of preamplifier (57).
6. according to claim 1 or 2 or 3 described round-the-clock outdoor test condenser microphones, it is characterized in that: the high-voltage connection (524) of static excitation apparatus terminates to the thimble (523) of static excitation apparatus, the other end is received a pin of socket (55), is connected on external high pressure source (57) through socket (55) lead-out wire.
7. round-the-clock outdoor test condenser microphone according to claim 4, it is characterized in that: the high-voltage connection (524) of static excitation apparatus terminates to the thimble (523) of static excitation apparatus, the other end is received a pin of socket (55), is connected to external high pressure source (57) through socket (55) lead-out wire.
8. round-the-clock outdoor test condenser microphone according to claim 1 and 2, it is characterized in that: the composition of round-the-clock outdoor test condenser microphone also comprises hurricane globe (102), hurricane globe (102) is socketed in shell (54) outside of outdoor test condenser microphone (101), and wherein hurricane globe (102) is made up of fan housing (1021), fan housing liner (1022) and bird-proof needle (1023).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102531 CN2891562Y (en) | 2006-04-07 | 2006-04-07 | Weatherproof outdoor test capacitor microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102531 CN2891562Y (en) | 2006-04-07 | 2006-04-07 | Weatherproof outdoor test capacitor microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2891562Y true CN2891562Y (en) | 2007-04-18 |
Family
ID=38022221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620102531 Expired - Lifetime CN2891562Y (en) | 2006-04-07 | 2006-04-07 | Weatherproof outdoor test capacitor microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2891562Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742392B (en) * | 2008-11-20 | 2013-04-17 | 中国计量科学研究院 | Device and method for measuring volume of front cavity of standard microphone |
| CN105628183A (en) * | 2015-12-25 | 2016-06-01 | 中电投工程研究检测评定中心 | Vibration detection and monitoring method for reducing influence of wind and rain |
| CN110677798A (en) * | 2019-09-09 | 2020-01-10 | 国网湖南省电力有限公司 | Microphone with self-calibration function, calibration method thereof, sound transmission system and sound detection system |
| CN110856091A (en) * | 2019-11-27 | 2020-02-28 | 湖南声仪测控科技有限责任公司 | Preamplifier for sound level meter |
| TWI817564B (en) * | 2022-06-17 | 2023-10-01 | 歐怡科技股份有限公司 | Sound measurement system and its correction auxiliary device |
-
2006
- 2006-04-07 CN CN 200620102531 patent/CN2891562Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742392B (en) * | 2008-11-20 | 2013-04-17 | 中国计量科学研究院 | Device and method for measuring volume of front cavity of standard microphone |
| CN105628183A (en) * | 2015-12-25 | 2016-06-01 | 中电投工程研究检测评定中心 | Vibration detection and monitoring method for reducing influence of wind and rain |
| CN110677798A (en) * | 2019-09-09 | 2020-01-10 | 国网湖南省电力有限公司 | Microphone with self-calibration function, calibration method thereof, sound transmission system and sound detection system |
| CN110856091A (en) * | 2019-11-27 | 2020-02-28 | 湖南声仪测控科技有限责任公司 | Preamplifier for sound level meter |
| TWI817564B (en) * | 2022-06-17 | 2023-10-01 | 歐怡科技股份有限公司 | Sound measurement system and its correction auxiliary device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2891562Y (en) | Weatherproof outdoor test capacitor microphone | |
| CN111044251B (en) | Device and method for directly measuring flow resistance of surface of acoustic liner | |
| CN103063879A (en) | Multi-parameter batch test equipment of micro-electromechanical systems (MEMS) acceleration sensor | |
| CN101845948B (en) | Radiation detector | |
| CN109142536B (en) | High-precision real-time positioning detection device for internal damage of rock | |
| CN110677798A (en) | Microphone with self-calibration function, calibration method thereof, sound transmission system and sound detection system | |
| CN112762290B (en) | L-shaped acoustic emission sensor array clamp and test method for detecting gas leakage | |
| CN212483883U (en) | Fast reactor covering gas gamma activity monitor | |
| CN211877279U (en) | Force sensor protective cover | |
| US20120140411A1 (en) | Hard disk drive simulating apparatus | |
| CN220871973U (en) | Resistance gauge vacuum gauge and vacuum detection system | |
| CN218724696U (en) | Noise vibration integration sensor | |
| CN219161443U (en) | Environmental noise monitoring probe | |
| CN212693064U (en) | Audio test box | |
| CN220230786U (en) | Atmospheric pressure sensor | |
| CN220985852U (en) | Testing device and testing system for preamplifier of capacitor microphone | |
| CN210469984U (en) | Novel bluetooth debugging instrument device | |
| CN109186746A (en) | A kind of noise transducer of carrier state monitoring | |
| CN214274140U (en) | Staple bolt structure and encoder subassembly | |
| CN218822739U (en) | Acoustic measurement system | |
| CN105486438A (en) | Vibration cylinder pressure transducer of vibration damping integrated structure | |
| CN216847736U (en) | Intelligent gas sensor | |
| CN217741911U (en) | High sound pressure testing device and system for microphone monomer | |
| CN209802388U (en) | Sensor mounting seat | |
| CN201892777U (en) | Lens barrel for observing inside of box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070418 |
|
| EXPY | Termination of patent right or utility model |