CN110290452B

CN110290452B - Acoustic test shielding box for microphone module at intelligent television end

Info

Publication number: CN110290452B
Application number: CN201910412386.XA
Authority: CN
Inventors: 苏运全; 林敏强
Original assignee: Shenzhen Konka Electronic Technology Co Ltd
Current assignee: Shenzhen Konka Electronic Technology Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2021-04-27
Anticipated expiration: 2039-05-17
Also published as: CN110290452A

Abstract

The invention discloses an acoustic test shielding box for a microphone module at an intelligent television end, which has the technical scheme that: be in including back chamber containing box, the setting that is used for holding acoustics calibration instrument preceding chamber shield cover that forms shielding space on the containing box of back chamber and when being used for the acoustics test and connect in the back chamber containing box with just be used for the adjustment between the preceding chamber shield cover the positioning control mechanism in preceding chamber shield cover test position can be compatible not unidimensional, appearance and specification's intelligent TV in a flexible way, has compact structure, is convenient for operate and the advantage that the reliability is high.

Description

Acoustic test shielding box for microphone module at intelligent television end

Technical Field

The invention relates to the technical field of microphone acoustic testing, in particular to an acoustic testing shielding box for a microphone module at an intelligent television end.

Background

Along with the development of social economy in recent years and the improvement of living standard, people are increasingly big to the demand volume of products such as intelligent TV and house, wherein, the microphone module is as the important spare part of intelligent TV equipment, and its pickup characteristic, also frequency response and distortion response directly relate to the performance index of product to directly reflect the market competition of product. Therefore, it is important to test the sound pickup characteristics of the microphone module.

However, in the prior art, mature equipment special for testing the sound pickup characteristics of the smart television microphone module is not provided, and the common testing equipment has the defects of poor compatibility and low automation degree.

Therefore, the prior art still needs to be improved and developed.

Disclosure of Invention

The invention aims to provide an acoustic testing shielding box of a microphone module at an intelligent television end aiming at the defects in the prior art, and the purpose of flexibly being compatible with intelligent televisions with different sizes, shapes and specifications is achieved.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides an intelligence TV end microphone module acoustics test shielded cell, wherein, is in including back chamber containing box, the setting that is used for holding acoustics calibration instrument on the containing box of back chamber and be used for the acoustics to test the time formation shielding space the front chamber shield cover and connect in the back chamber containing box with between the front chamber shield cover and be used for the adjustment the location adjustment mechanism in front chamber shield cover test position.

Smart TV end microphone module acoustics test shielded cell, wherein, the inboard of front chamber shield cover is provided with monitors the audio amplifier, monitor the audio amplifier and send predetermined standard sound when acoustics test, acoustics calibration instrument includes test host and analysis appearance.

Smart TV end microphone module acoustics test shielded cell, wherein, the upper end of back chamber containing box is provided with and is used for the assembly positioning adjustment mechanism's mount, the front chamber shield cover including connect set up in positioning adjustment mechanism just is used for the assembly monitor the backshell of audio amplifier and set up the shield cover body of backshell front end.

Smart TV end microphone module acoustic test shielded cell, wherein, the shielding cover body includes the surface of metal material, the internal surface of the fine cotton material of glass and sets up the surface with intermediate layer between the internal surface, the intermediate layer is multilayer level acoustic structure.

Smart TV end microphone module acoustic test shielded cell, wherein, location adjustment mechanism include vertical sliding connection in the vertical locating component of mount, horizontal sliding connection in the horizontal locating component of vertical locating component and vertical sliding connection in the vertical locating component of horizontal locating component, the backshell rotate connect in the vertical locating component front end.

Smart TV end microphone module acoustic test shielded cell, wherein, the mount is including setting up montant on the back cavity containing box and setting are in the crossbeam of montant upper end, vertical positioning assembly include swing joint in the vertical connecting seat of montant and be used for with vertical connecting seat is fixed vertical fastener on the montant, be provided with on the length direction of montant a plurality of with the fixed orifices of vertical fastener adaptation.

Smart TV end microphone module acoustics test shielded cell, wherein, horizontal positioning assembly is including transversely setting up horizontal damping slide bar on the vertical connecting seat and horizontal sliding connection in the horizontal sliding seat of horizontal damping slide bar, vertical positioning assembly includes vertical sliding connection in the vertical damping slide bar of horizontal sliding seat, setting are in vertical damping slide bar front end and connect in the damping pivot of backshell and be used for with vertical damping slide bar is fixed vertical fastener on the horizontal sliding seat.

The utility model discloses an intelligent TV end microphone module acoustic test shielded cell, wherein, location adjustment mechanism is still including setting up just be used for fixing a position the locating lever of intelligent TV end on the backshell, be provided with the fixing base on the backshell, locating lever sliding connection in the fixing base, be provided with on the fixing base and be used for fixing the location fastener of locating lever.

The utility model discloses an acoustic test shielding box of smart television end microphone module, wherein, be provided with the display that is used for showing test result and test time on the mount.

The acoustic testing shielding box for the microphone module at the intelligent television end is characterized in that a shock absorption air cushion for shock insulation and noise reduction is arranged at the lower end of the rear cavity containing box, and a universal wheel and a movable foot are detachably connected to the lower end of the shock absorption air cushion; and the rear cavity containing box is provided with a threading hole for wiring.

In conclusion, the invention has the following beneficial effects:

according to the invention, the monitoring sound box can emit uniform sound energy in the front cavity shielding cover through the acoustic calibration instrument, and the front cavity shielding cover and the front surface of the intelligent television form a shielding space, so that external noise is isolated, and the sound energy received by the intelligent television microphone module is uniform; in addition, the testing direction of the front cavity shielding cover is adjusted through the positioning adjusting mechanism, so that the intelligent television is flexibly compatible with the intelligent televisions with different sizes, shapes and specifications, and the intelligent television has the advantages of compact structure, convenience in operation and high reliability.

Drawings

Fig. 1 is a schematic view of the entire structure of the shield box in this embodiment.

Fig. 2 is a schematic structural view of another overall view of the shielding box in the embodiment.

Fig. 3 is a schematic view of the internal structure of the shielding box of the embodiment without the door body.

In the figure: 100. a rear cavity storage box; 110. a test host; 120. an analyzer; 130. a fixed mount; 131. a vertical rod; 132. a fixing hole; 133. a cross beam; 140. a display; 141. a rotating seat; 142. rotating the rod; 143. rotating the fastener; 150. a shock-absorbing air cushion; 160. a universal wheel; 170. a movable foot; 180. threading holes; 191. a door body; 192. a vent; 200. a front cavity shield; 210. a rear housing; 220. monitoring a sound box; 230. a shielding cage body; 300. a positioning adjustment mechanism; 310. a vertical positioning assembly; 311. a vertical connecting seat; 312. a vertical fastener; 313. a strip-shaped through hole; 320. a transverse positioning assembly; 321. a transverse damping slide bar; 322. a transverse sliding seat; 330. a longitudinal positioning assembly; 331. a longitudinal damping slide bar; 332. a damping rotating shaft; 333. a longitudinal fastener; 340. positioning a rod; 341. positioning a fastener; 342. a fixed seat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the invention provides an acoustic testing shielding box for a microphone module at an intelligent television end, which comprises a rear cavity containing box 100, a front cavity shielding cover 200 and a positioning adjusting mechanism 300 as shown in fig. 1 to 3, wherein the rear cavity containing box 100 is used for containing an acoustic calibration instrument, and the rear cavity containing box 100 is made of an aluminum alloy material. The front chamber shield case 200 is disposed on the rear chamber receiving box 100, and is used to form a shield space during an acoustic test. The positioning adjustment mechanism 300 is disposed between the rear cavity storage box 100 and the front cavity shield 200, and is used for adjusting the test orientation of the front cavity shield 200.

The inboard of front chamber shield cover 200 is provided with monitors audio amplifier 220, monitor audio amplifier 220 and send predetermined standard sound when the acoustics is tested, acoustics calibration instrument includes test host 110 and analysis appearance 120, test host 110 and analysis appearance 120 set up respectively in the rear chamber containing box 100. Preferably, the analyzer 120 is a digital spectrum analyzer.

In the present application, a digital spectrum analyzer based on FFT, i.e. fast fourier transform, is used to obtain various information of an input signal, such as power spectrum, frequency components and period performance, from a spectrogram of the signal. The method has the advantages of few peripheral circuits, convenience in implementation and high precision.

The upper end of back chamber containing box 100 is provided with and is used for the assembly mount 130 of location adjustment mechanism 300, front chamber shield cover 200 includes backshell 210 and the shielding cover body 230, backshell 210 connect set up in location adjustment mechanism 300, backshell 210 is used for the assembly monitor audio amplifier 220, the shielding cover body 230 sets up the front end of backshell 210. The shielding cover 230 is a horn-shaped cover with an open lower end, and the upper end of the shielding cover 230 is in a semi-arc shape.

In this embodiment, the shielding cover body includes surface, internal surface and intermediate layer, the surface is the metal material, the internal surface is the fine cotton material of glass, the centre gripping sets up the surface with between the internal surface, the intermediate layer is multilayer level acoustic structure.

The utility model provides an intelligent TV microphone module acoustics test shielded cell is mainly based on acoustics test principle, wherein, make through acoustics calibration instrument and monitor the audio amplifier and send even acoustic energy in the antechamber shield cover, the antechamber shield cover openly forms shielded space with intelligent TV, isolated external noise for the acoustic energy that intelligent TV microphone module received is even, thereby records the audio frequency characteristic of accurate intelligent TV microphone module.

The positioning adjustment mechanism 300 includes a vertical positioning assembly 310, a lateral positioning assembly 320, and a longitudinal positioning assembly 330. Vertical locating component 310 vertical sliding connection in mount 130 is used for adjusting the vertical position of front cavity shield 200, horizontal locating component 320 horizontal sliding connection in vertical locating component 310 is used for adjusting the horizontal position of front cavity shield 200, vertical locating component 330 vertical sliding connection in horizontal locating component 320 is used for adjusting the vertical position of front cavity shield 200. The rear housing 210 is rotatably coupled to the front end of the longitudinal positioning assembly 330. The main connection mode of the positioning and adjusting mechanism 300 is a sliding rod structure with damping force, wherein the sliding rod structure is made of stainless steel, so that the test position can be adjusted conveniently.

The fixing frame 130 includes a vertical rod 131 and a cross beam 133, the vertical rod 131 is welded and fixed to the upper end of the rear cavity containing box 100, and the cross beam 133 is welded and fixed to or integrally formed with the vertical rod 131. Specifically, the edges of the two sides of the upper end of the rear cavity containing box 100 are respectively provided with a vertical rod 131, and the cross beam 133 is arranged between the upper ends of the two vertical rods 131.

The vertical positioning component 310 comprises a vertical connecting seat 311 and a vertical fastener 312, the vertical connecting seat 311 is movably connected to the vertical rod 131, and the vertical fastener 312 is used for fixing the vertical connecting seat 311 on the vertical rod 131. A plurality of fixing holes 132 are formed in the vertical rod 131 in the length direction, the distance between each fixing hole 132 is equal to and smaller than the length of the vertical fastening member 312, and the fixing holes 132 are in threaded connection with the vertical fastening member 312. Specifically, the vertical connecting seat 311 is provided with a strip through hole 313 for accommodating a screw of the vertical fastening member 312, the screw of the vertical fastening member 312 passes through the strip through hole 313 and is screwed into the fixing hole 132, and the vertical fastening member 312 is screwed to complete the fixing of the vertical connecting seat 311.

The transverse positioning assembly 320 comprises a transverse damping sliding rod 321 and a transverse sliding seat 322, the transverse damping sliding rod 321 is transversely arranged on the vertical connecting seat 311, and the transverse sliding seat 322 is slidably connected to the transverse damping sliding rod 321. Specifically, the transverse damping sliding rod 321 is inserted into the vertical connecting seat 311 and fixed by a screw.

The longitudinal positioning component 330 comprises a longitudinal damping slider bar 331, a damping rotating shaft 332 and a longitudinal fastener 333, wherein the longitudinal damping slider bar 331 is longitudinally slidably connected to the transverse sliding seat 322, the damping rotating shaft 332 is arranged at the front end of the longitudinal damping slider bar 331, the rear shell 210 is connected to the longitudinal damping slider bar 331 through the damping rotating shaft 332, and the longitudinal fastener 333 is used for fixing the longitudinal damping slider bar 331 on the transverse sliding seat 322.

The positioning adjustment mechanism 300 further comprises a positioning rod 340, the positioning rod 340 is arranged on the rear shell 210, and the positioning rod 340 is used for positioning the end of the smart television, so as to match with smart televisions with different specifications and sizes. The rear housing 210 is provided with a fixing seat 342, the positioning rod 340 is slidably connected to the fixing seat 342, a positioning fastener 341 is threadedly connected to the fixing seat 342, and the positioning fastener 341 is used for fixing the positioning rod 340.

The fixing frame 130 is provided with a display 140, and the display 140 is used for displaying the test result and the test time of the display 140. Specifically, display 140 through a rotation seat 141 connect in the upper end of crossbeam 133, rotation seat 141 welded fastening be in the upper end of crossbeam 133, display 140's lower extreme is provided with a dwang 142, dwang 142 rotate connect in rotation seat 141, threaded connection has the rotation fastener 143 that is used for fixing on the rotation seat 141.

The lower extreme of rear cavity containing box 100 is provided with shock attenuation air cushion 150, and shock attenuation air cushion 150 is used for supporting whole platform equipment to realize the purpose of making an uproar falls in the shock insulation, ensure rear cavity containing box 100 possesses sufficient volume, and has certain shock insulation ability, avoids influencing the even sound field of the speaker of monitoring audio amplifier 220.

The lower end of the shock-absorbing air cushion 150 is detachably connected with a universal wheel 160 and a movable foot 170, so that the test can be conveniently carried out between different production lines. The rear cavity containing box 100 is provided with a threading hole 180 for wiring, and the front end face and the rear end face of the rear cavity containing box 100 are both provided with door bodies 191 for facilitating installation and maintenance of the built-in acoustic calibration instrument. The side of the rear cavity receiving box 100 is provided with a vent 192 for heat dissipation.

To sum up, this application makes the monitoring audio amplifier send even acoustic energy in the front chamber shield cover through acoustics calibration instrument, and front chamber shield cover and intelligent TV openly form shielding space to isolated external noise makes the acoustic energy that intelligent TV microphone module received even.

And, this application scheme is particularly useful for the test of the audio frequency characteristic of intelligent TV microphone module, through the test position of positioning adjustment mechanism adjustment front cavity shield cover to the professional acoustics test equipment of the intelligent TV microphone module of nimble compatible not unidimensional, appearance and specification has compact structure, is convenient for operate and the advantage that the reliability is high. The device is suitable for batch deployment on an automatic production line and is used for acoustic testing of the smart television microphone module.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims

1. An acoustic testing shielding box of an intelligent television end microphone module is characterized by comprising a rear cavity containing box for containing an acoustic calibration instrument, a front cavity shielding case which is arranged on the rear cavity containing box and is used for forming a shielding space during acoustic testing, and a positioning adjusting mechanism which is connected between the rear cavity containing box and the front cavity shielding case and is used for adjusting the testing direction of the front cavity shielding case;

the inner side of the front cavity shielding cover is provided with a monitoring sound box, the monitoring sound box emits preset standard sound during acoustic testing, and the acoustic calibration instrument comprises a test host and an analyzer; the upper end of the rear cavity containing box is provided with a fixing frame for assembling the positioning adjusting mechanism, and the front cavity shielding cover comprises a rear shell which is connected with the positioning adjusting mechanism and used for assembling the monitoring sound box and a shielding cover body arranged at the front end of the rear shell;

the positioning adjusting mechanism comprises a vertical positioning assembly, a transverse sliding assembly and a longitudinal positioning assembly, wherein the vertical positioning assembly is connected with the fixing frame in a sliding mode, the transverse sliding assembly is connected with the transverse positioning assembly of the vertical positioning assembly in a sliding mode, the longitudinal positioning assembly is connected with the transverse positioning assembly in a sliding mode, and the rear shell is rotatably connected with the front end of the longitudinal positioning assembly.

2. The acoustic test shielding box for the microphone module at the smart television end as claimed in claim 1, wherein: the shielding cover body comprises an outer surface made of metal materials, an inner surface made of glass fiber cotton materials and an interlayer arranged between the outer surface and the inner surface, and the interlayer is of a multi-level acoustic structure.

3. The acoustic test shielding box for the microphone module at the smart television end as claimed in claim 1, wherein: the fixing frame is in including setting up montant and setting on the rear chamber containing box are in the crossbeam of montant upper end, vertical positioning component include swing joint in the vertical connecting seat of montant and be used for with vertical connecting seat is fixed vertical fastener on the montant, be provided with on the length direction of montant a plurality of with the fixed orifices of vertical fastener adaptation.

4. The acoustic test shielding box for the microphone module at the smart television end as claimed in claim 3, wherein: horizontal locating component is in including horizontal setting horizontal damping slide bar on the vertical connecting seat and horizontal sliding connection in the horizontal sliding seat of horizontal damping slide bar, vertical locating component includes vertical sliding connection in the vertical damping slide bar of horizontal sliding seat, set up and be in vertical damping slide bar front end and connect in the damping pivot of backshell and be used for with vertical damping slide bar is fixed vertical fastener on the horizontal sliding seat.

5. The acoustic test shielding box for the microphone module at the smart television end as claimed in claim 1, wherein: the positioning adjusting mechanism further comprises a positioning rod arranged on the rear shell and used for positioning the intelligent television end, a fixing seat is arranged on the rear shell, the positioning rod is connected to the fixing seat in a sliding mode, and a positioning fastener used for fixing the positioning rod is arranged on the fixing seat.

6. The acoustic test shielding box for the microphone module at the smart television end as claimed in claim 1, wherein: and a display for displaying the test result and the test time is arranged on the fixing frame.

7. The acoustic test shielding box for the microphone module at the smart television end as claimed in claim 1, wherein: the lower end of the rear cavity containing box is provided with a shock absorption air cushion for shock insulation and noise reduction, and the lower end of the shock absorption air cushion is detachably connected with universal wheels and movable legs; and the rear cavity containing box is provided with a threading hole for wiring.