CN206620246U - A kind of wireless industrial active noise reduction earphone being connected with intercom - Google Patents
A kind of wireless industrial active noise reduction earphone being connected with intercom Download PDFInfo
- Publication number
- CN206620246U CN206620246U CN201720203889.2U CN201720203889U CN206620246U CN 206620246 U CN206620246 U CN 206620246U CN 201720203889 U CN201720203889 U CN 201720203889U CN 206620246 U CN206620246 U CN 206620246U
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- electric capacity
- intercom
- resistance
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- connection
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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Abstract
The utility model discloses a kind of wireless industrial active noise reduction earphone being connected with intercom, it is characterised in that：Including the headset main body being positioned at ear, headset main body is internally provided with for screening the ambient noise mixed in intercom and generation and the filter control circuit of ambient noise opposite in phase signal, the signal that the filter control circuit is produced can be superimposed with ambient noise, enter ear field in earphone and weaken or eliminate ambient noise, the filter control circuit is connected with loudspeaker, the talk button of intercom and intercom, the loudspeaker is arranged on inside the headset main body, the intercom shell is connected with the headset main body, the talk button is arranged on the outside of headset main body.The utility model uses the technology that sound wave is offset, and interphone communication is solved the problems, such as, between this earphone and intercom, connected by audio cable, so that while noise is fallen in isolation, the use of intercom is not influenceed, the voice of intercom can be clearly by the incoming ear of earphone.
Description
Technical field
The utility model is related to industrial ear phone technology field, and more particularly to a kind of wireless industrial being connected with intercom is actively
Noise cancelling headphone.
Background technology
In industrial production, workman often receives the injury of environmental noise, and such injury can damage the hearing system of people.
Current labour protection equipment mainly uses earplug or earmuff, so as to play a part of completely cutting off noise, the shortcoming of earplug mainly has：
It is easy to lose, soundproof effect is poor；Earmuff can only also play the effect of sound insulation, and soundproof effect is limited, and the head beam grip force of earmuff
It is very big, wear uncomfortable.Furthermore, because staff scene can often wear intercom, earplug and earmuff are in isolation noise
Meanwhile, also completely cut off other sound, the sound of propagandaing directed to communicate of such as intercom, so as to cause confusing communication, easily caused injury or lose.
Utility model content
Defect based on prior art, the purpose of this utility model is to provide a kind of wireless industrial being connected with intercom
Active noise reduction earphone, using active noise reduction, the environmental noise in intercom, earphone speaker is launched and environmental noise frequency
Rate is approached, and the sound wave of opposite in phase, so as to offset environmental noise.
To achieve the above object, the utility model provides following technical scheme：A kind of wireless industrial being connected with intercom
Active noise reduction earphone, it is characterised in that：Including the headset main body being positioned at ear, headset main body is internally provided with for screening
The ambient noise mixed in intercom and generation and the filter control circuit of ambient noise opposite in phase signal, filtering control electricity
The signal that road is produced can be superimposed with ambient noise, entered ear field in earphone and weakened or eliminate ambient noise, the filter control circuit
The talk button of loudspeaker, intercom and intercom is connected with, the loudspeaker is arranged on inside the headset main body, described right
Say that machine shell is connected with the headset main body, the talk button is arranged on the outside of headset main body.
The filter control circuit includes the control chip of 89C51 single-chip microcomputers, and the AD being connected with control chip input turns
Parallel operation, the D/A converter being connected with control chip output end, the input connection intercom analog signal of the AD converter is defeated
Go out end, the D/A converter output end is connected with filter circuit input, and the filter circuit output end connects the loudspeaker.
The first electric capacity C1, the C1 output end that the filter circuit includes connect with the D/A converter output end connects the
One amplifier U1 positive terminal and it is grounded by first resistor R1, the second resistance of the output end connection series connection of the first amplifier U1
R2,3rd resistor R3 and the second electric capacity C2, the end of oppisite phase of line and the first amplifier between the second resistance and 3rd resistor
Connection, the output end of first amplifier has been also respectively connected with the 4th resistance R4 and the 4th electric capacity C4, R4 other end one side
Connect the 5th resistance, be on the other hand grounded by connecting after the 3rd electric capacity C3, on the one hand the other end of the 4th electric capacity C4 connects
The 5th electric capacity C5 is met, is on the other hand grounded by connecting after the 6th resistance R6, the second end of the 5th resistance R5 and the 5th electricity
The 6th electric capacity C6 first end and the 8th resistance R8 first end, the 6th electric capacity C6 are connected respectively again after the second end connection for holding C5
The second end connect the 7th resistance R7 first end, after the 7th resistance R7 the second end and the 8th resistance R8 the second end connection again
The 9th resistance R9 and the 8th electric capacity C8, the R9 other end on the one hand the tenth resistance R10 of series connection is connected, on the other hand passes through connection the
It is grounded after seven electric capacity C7, the other end of the 8th electric capacity C8 on the one hand the 9th electric capacity C9 of connection, on the other hand passes through connection the
It is grounded after 11 resistance R11, connects and raise one's voice behind the second end of the tenth resistance R10 and the 9th electric capacity C9 the second end connection
Device, the 12nd resistance R12 and the second amplifier U3 be connected across respectively the 8th electric capacity C8 first ends and the tenth the second ends of electric capacity C10 it
Between, wherein the second amplifier U3 positive terminal connects the 8th electric capacity C8 first ends, the second amplifier U3 output ends connect the tenth electric capacity C10
Second end.
Compared with prior art, the beneficial effects of the utility model are：
The technology offset using sound wave, it is not necessary to make a beam very firmly laminating auricle, so as to so that wear it is more comfortable,
And summer also can be more nice and cool；
Interphone communication is solved the problems, such as, between this earphone and intercom, is connected by audio cable, so as to fall in isolation
While noise, the use of intercom is not influenceed, the voice of intercom can be clearly by the incoming ear of earphone；
The button of intercom is arranged on the left and right sides of headset main body, the talk button of intercom, be easy to pressure by.
Brief description of the drawings
Fig. 1 is the utility model specific embodiment structural representation；
Fig. 2 is the utility model specific embodiment filter circuit schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As illustrated in fig. 1 and 2, a kind of wireless industrial active noise reduction earphone being connected with intercom, it is characterised in that：Including putting
The headset main body 1 being placed at ear, headset main body 1 is internally provided with for screening the ambient noise mixed in intercom and generation
With the filter control circuit of ambient noise opposite in phase signal, the signal that the filter control circuit is produced can be folded with ambient noise
Plus, enter ear field in earphone and weaken or elimination ambient noise, the filter control circuit is connected with loudspeaker, intercom 2 and intercommunication
The talk button 3 of machine, the loudspeaker is arranged on inside the headset main body 1, the intercom shell and the headset main body 1
Connection, the talk button 3 is arranged on the outside of headset main body 1.
The filter control circuit includes the control chip of 89C51 single-chip microcomputers, and the AD being connected with control chip input turns
Parallel operation, the D/A converter being connected with control chip output end P, the input connection intercom analog signal of the AD converter is defeated
Go out end, the D/A converter output end Q is connected with filter circuit input, raised one's voice described in the filter circuit output end connection
Device.
The first electric capacity C1, the C1 output end that the filter circuit includes connect with the D/A converter output end connects the
One amplifier U1 positive terminal and it is grounded by first resistor R1, the second resistance of the output end connection series connection of the first amplifier U1
R2,3rd resistor R3 and the second electric capacity C2, the end of oppisite phase of line and the first amplifier between the second resistance and 3rd resistor
Connection, the output end of first amplifier has been also respectively connected with the 4th resistance R4 and the 4th electric capacity C4, R4 other end one side
Connect the 5th resistance, be on the other hand grounded by connecting after the 3rd electric capacity C3, on the one hand the other end of the 4th electric capacity C4 connects
The 5th electric capacity C5 is met, is on the other hand grounded by connecting after the 6th resistance R6, the second end of the 5th resistance R5 and the 5th electricity
The 6th electric capacity C6 first end and the 8th resistance R8 first end, the 6th electric capacity C6 are connected respectively again after the second end connection for holding C5
The second end connect the 7th resistance R7 first end, after the 7th resistance R7 the second end and the 8th resistance R8 the second end connection again
The 9th resistance R9 and the 8th electric capacity C8, the R9 other end on the one hand the tenth resistance R10 of series connection is connected, on the other hand passes through connection the
It is grounded after seven electric capacity C7, the other end of the 8th electric capacity C8 on the one hand the 9th electric capacity C9 of connection, on the other hand passes through connection the
It is grounded after 11 resistance R11, connects and raise one's voice behind the second end of the tenth resistance R10 and the 9th electric capacity C9 the second end connection
Device, the 12nd resistance R12 and the second amplifier U3 be connected across respectively the 8th electric capacity C8 first ends and the tenth the second ends of electric capacity C10 it
Between, wherein the second amplifier U3 positive terminal connects the 8th electric capacity C8 first ends, the second amplifier U3 output ends connect the tenth electric capacity C10
Second end.
The technology offset using sound wave, it is not necessary to make a beam very firmly laminating auricle, so as to so that wear it is more comfortable,
And summer also can be more nice and cool；
Interphone communication is solved the problems, such as, between this earphone and intercom, is connected by audio cable, so as to fall in isolation
While noise, the use of intercom is not influenceed, the voice of intercom can be clearly by the incoming ear of earphone；
The button of intercom is arranged on the left and right sides of headset main body, the talk button of intercom, be easy to pressure by.
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, it can still be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered
Row equivalent substitution, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. all should
Within protection domain of the present utility model.
Claims (3)
1. a kind of wireless industrial active noise reduction earphone being connected with intercom, it is characterised in that：Including the ear being positioned at ear
Owner's body, headset main body is internally provided with for screening the ambient noise mixed in intercom and generation and ambient noise phase phase
The filter control circuit of inverted signal, the signal that the filter control circuit is produced can be superimposed with ambient noise, and entering ear field in earphone subtracts
Weak or elimination ambient noise, the filter control circuit is connected with the talk button of loudspeaker, intercom and intercom, described to raise
Sound device is arranged on inside the headset main body, and the intercom shell is connected with the headset main body, and the talk button is set
In the outside of headset main body.
2. the wireless industrial active noise reduction earphone being connected as claimed in claim 1 with intercom, it is characterised in that：The filtering
Control circuit includes the control chip of 89C51 single-chip microcomputers, and the AD converter being connected with control chip input is defeated with control chip
Go out the D/A converter of end connection, the input connection intercom analog signal output of the AD converter, the D/A converter
Output end is connected with filter circuit input, and the filter circuit output end connects the loudspeaker.
3. the wireless industrial active noise reduction earphone being connected as claimed in claim 2 with intercom, it is characterised in that：The filtering
Circuit includes the first the electric capacity C1, C1 connected with the D/A converter output end the first amplifier U1 of output end connection positive terminal
And be grounded by first resistor R1, second resistance R2, the 3rd resistor R3 of the connection series connection of the output end of the first amplifier U1 and
Second electric capacity C2, the line between the second resistance and 3rd resistor is connected with the end of oppisite phase of the first amplifier, first fortune
The output end put has been also respectively connected with the 4th resistance R4 and the 4th electric capacity C4, R4 other end one side the 5th resistance of series connection, separately
On the one hand it is grounded by connecting after the 3rd electric capacity C3, on the one hand the other end of the 4th electric capacity C4 connects the 5th electric capacity C5, separately
On the one hand it is grounded by connecting after the 6th resistance R6, the second end of the 5th resistance R5 and the 5th electric capacity C5 the second end connection
Connect the 6th electric capacity C6 first end and the 8th resistance R8 first end, the 6th electric capacity C6 the second end connection the 7th respectively again afterwards
Reconnected after resistance R7 first end, the 7th resistance R7 the second end and the 8th resistance R8 the second end connection the 9th resistance R9 and
8th electric capacity C8, R9 other end one side the tenth resistance R10 of series connection, are on the other hand grounded by connecting after the 7th electric capacity C7,
On the one hand the other end of the 8th electric capacity C8 connects the 9th electric capacity C9, is on the other hand followed by by connecting the 11st resistance R11
Loudspeaker, the 12nd resistance R12 are connected after ground, the second end of the tenth resistance R10 and the 9th electric capacity C9 the second end connection
And second amplifier U3 be connected across respectively between the 8th electric capacity C8 first ends and the tenth the second ends of electric capacity C10, wherein the second amplifier U3
Positive terminal connect the 8th electric capacity C8 first ends, the second amplifier U3 output ends connect the tenth the second ends of electric capacity C10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203889.2U CN206620246U (en) | 2017-03-03 | 2017-03-03 | A kind of wireless industrial active noise reduction earphone being connected with intercom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203889.2U CN206620246U (en) | 2017-03-03 | 2017-03-03 | A kind of wireless industrial active noise reduction earphone being connected with intercom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206620246U true CN206620246U (en) | 2017-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720203889.2U Expired - Fee Related CN206620246U (en) | 2017-03-03 | 2017-03-03 | A kind of wireless industrial active noise reduction earphone being connected with intercom |
Country Status (1)
| Country | Link |
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| CN (1) | CN206620246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110708615A (en) * | 2019-08-29 | 2020-01-17 | 广东思派康电子科技有限公司 | Intercommunication system and intercommunication method realized based on TWS earphone |
-
2017
- 2017-03-03 CN CN201720203889.2U patent/CN206620246U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110708615A (en) * | 2019-08-29 | 2020-01-17 | 广东思派康电子科技有限公司 | Intercommunication system and intercommunication method realized based on TWS earphone |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |