CN209197893U - A kind of noise transducer of carrier state monitoring - Google Patents
A kind of noise transducer of carrier state monitoring Download PDFInfo
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- CN209197893U CN209197893U CN201821683041.5U CN201821683041U CN209197893U CN 209197893 U CN209197893 U CN 209197893U CN 201821683041 U CN201821683041 U CN 201821683041U CN 209197893 U CN209197893 U CN 209197893U
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- accurate miniature
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Abstract
The utility model discloses a kind of noise transducers of carrier state monitoring, including shell and it is installed on the intracorporal measuring microphone of the shell, it further include accurate miniature capacitor, converter and processor, accurate miniature capacitor, converter and the processor is mounted on shell, and the measuring microphone passes through converter with accurate miniature capacitor and connect with processor communication, the accurate miniature capacitor also passes through connecting line and connect with measuring microphone.The utility model passes through one accurate miniature capacitor of setting, one signal can be coupled to measuring microphone one end, the signal of coupling can test out a sound pressure level according to normal test access, and the noise transducer is when factory, one group of signal grade data as standard can be tested, and it saves the data in arm processor, when executing inspection, signal grade is read in DAC transformation segment output signal, it is compared with the factory signal grade stored in ARM, judges whether measuring microphone work is normal.
Description
[technical field]
The utility model relates to the technical field of noise monitoring, in particular to a kind of noise transducer of carrier state monitoring.
[background technique]
Currently, noise monitoring uses electrostatic actuator as the status monitoring of acoustical signal monitoring device, for common school
, at high cost quasi- application, has the following problems: 1), installation is complicated, and electrostatic actuator is divided into electrostatic actuator power supply and driver pole
Plate, complete equipment volume is big, and installation is complex, and can influence noise measurement to a certain extent；2), environment resistant is dry
It is poor to disturb ability, especially in the environment of high humility, electrostatic actuator is easy to happen electrostatic breakdown and damages equipment；3), electrostatic
The rated capacity of driver can not substitute acoustical signal calibration completely.
[utility model content]
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, the noise for providing a kind of carrier state monitoring is passed
Sensor aims to solve the problem that the status monitoring that noise monitoring in the prior art uses electrostatic actuator as acoustical signal monitoring device,
There are at high cost, installation complexity, and environment resistant interference performance is poor, and the rated capacity of electrostatic actuator can not substitute acoustical signal completely
The technical issues of calibration.
To achieve the above object, the utility model proposes a kind of carrier state monitoring noise transducer, including shell and
It is installed on the intracorporal measuring microphone of the shell, further includes accurate miniature capacitor, converter and processor, the accurate miniature
Capacitor, converter and processor are mounted on shell, and the measuring microphone and accurate miniature capacitor pass through converter
It is connect with processor communication, the accurate miniature capacitor also passes through connecting line and connect with measuring microphone.
Preferably, the converter includes ADC transformation segment and DAC transformation segment, the measuring microphone passes through company
Wiring is connect with the input terminal of ADC transformation segment, and described accurate miniature capacitor one end passes through the output of connecting line and DAC transformation segment
End connection, the other end are connect by connecting line with measuring microphone, the output end of the ADC transformation segment and DAC transformation segment
Input terminal is connect with processor communication.
Preferably, the processor uses arm processor.
Preferably, being also stored with factory signal grade data in the processor.
Preferably, when the factory signal grade data are that the noise transducer dispatches from the factory, the letter tested
Number grade data.
The utility model has the beneficial effects that compared with prior art, a kind of carrier state monitoring provided by the utility model
Noise transducer, it is structurally reasonable, by the way that an accurate miniature capacitor is arranged, a signal can be coupled to measuring microphone one
End, the signal of coupling can test out a sound pressure level according to normal test access, and the noise transducer is dispatching from the factory
When, one group of signal grade data as standard can be tested, and save the data in arm processor, execute inspection
When, the factory signal grade stored in signal grade and ARM is read in DAC transformation segment output signal and is compared, and judges to measure transaudient
Whether device work is normal；Since signal source and accurate miniature capacitor are small in size, can very easily integrate inside housings, volume
It is small, it solves the problem of that current noise monitoring is big using acoustical signal monitoring device volume, installation is complicated and has an effect on measurement result.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of structure schematic diagram of the noise transducer of carrier state monitoring of the utility model embodiment.
[specific embodiment]
To make the objectives, technical solutions and advantages of the present invention clearer, below by accompanying drawings and embodiments,
The present invention will be further described in detail.However, it should be understood that specific embodiment described herein is only used to solve
The utility model is released, the range being not intended to limit the utility model.In addition, in the following description, being omitted to known features
With the description of technology, to avoid the concept for unnecessarily obscuring the utility model.
Refering to fig. 1, the utility model embodiment provides a kind of noise transducer of carrier state monitoring, including shell 1 and peace
It further include accurate miniature capacitor 3, converter 4 and processor 5, the precision loaded on the measuring microphone 2 in the shell 1
Micro capacitance 3, converter 4 and processor 5 are mounted on shell 1, and the measuring microphone 2 and accurate miniature capacitor 3 are equal
It is communicated to connect by converter 4 and processor 5, the accurate miniature capacitor 3 is also connected by connecting line and measuring microphone 2
It connects.
Further, the converter 4 includes ADC transformation segment 41 and DAC transformation segment 42, the measuring microphone 2
It is connect by connecting line with the input terminal of ADC transformation segment 41, described 3 one end of accurate miniature capacitor is turned by connecting line and DAC
The output end connection of section 42 is changed, the other end is connect by connecting line with measuring microphone 2, the output of the ADC transformation segment 41
The input terminal of end and DAC transformation segment 42 is communicated to connect with processor 5.
In the utility model embodiment, the processor 5 uses arm processor.
Further, factory signal grade data, the factory signal grade data are also stored in the processor 5
When for noise transducer factory, the signal grade data tested.
A kind of noise transducer of carrier state monitoring of the utility model, it is structurally reasonable, by the way that an accurate miniature electricity is arranged
Hold 3, electric signal source is coupled to the input terminal of measuring microphone, the signal of coupling can be tested according to normal test access
A sound pressure level out can be to avoid the interference of ambient noise when detection by controlling the amplitude of coupled signal.And it should
Noise transducer can test one group of signal grade data as standard, and save the data in arm processor when factory
In, execute examine when, read the factory signal grade stored in signal grade and ARM in DAC transformation segment output signal and do pair
Than.
When 2 characteristic changing of measuring microphone, the signal grade that microphone input end monitors (namely measures noise
Sound pressure level) it will appear large change, so that user's measuring microphone 2 be prompted exception occur, can effectively detect transaudient
Situations such as device diaphragm breakage, water inlet (the main source of damage in the noise measuring of open air at present).
Further, since signal source and accurate miniature capacitor are small in size, can very easily be integrated in inside shell 1, volume
It is small, it solves the problem of that current noise monitoring is big using acoustical signal monitoring device volume, installation is complicated and has an effect on measurement result.
The utility model proposes a kind of carrier state monitoring noise transducer it is at low cost, cosmetic variation will not be caused, it is right
Noise testing result is without influence；Function is integrated in inside noise transducer, and environment resistant interference performance is strong；Be able to detect that makes at present
With the main damaged condition of middle measuring microphone (including measuring microphone diaphragm breakage；Measuring microphone diaphragm gets wet；Measurement passes
Sound device is replaced；In the normal situation of measuring microphone, acoustical signal calibrates the case where making mistakes, caused alignment error), to reach
To the purpose of status monitoring.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modification, equivalent replacement or improvement etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (5)
1. a kind of noise transducer of carrier state monitoring, including shell (1) and the measuring microphone being installed in the shell (1)
(2), it is characterised in that: further include accurate miniature capacitor (3), converter (4) and processor (5), the accurate miniature capacitor
(3), converter (4) and processor (5) are mounted in shell (1), and the measuring microphone (2) and accurate miniature capacitor
(3) it is communicated to connect by converter (4) and processor (5), the accurate miniature capacitor (3) also passes through connecting line and measurement
Microphone (2) connection.
2. a kind of noise transducer of carrier state monitoring as described in claim 1, it is characterised in that: the converter (4)
Including ADC transformation segment (41) and DAC transformation segment (42), the measuring microphone (2) passes through connecting line and ADC transformation segment (41)
Input terminal connection, described accurate miniature capacitor (3) one end connect by connecting line with the output end of DAC transformation segment (42),
The other end is connect by connecting line with measuring microphone (2), the output end and DAC transformation segment of the ADC transformation segment (41)
(42) input terminal is communicated to connect with processor (5).
3. a kind of noise transducer of carrier state monitoring as described in claim 1, it is characterised in that: the processor (5)
Using arm processor.
4. a kind of noise transducer of carrier state monitoring as described in claim 1, it is characterised in that: the processor (5)
Inside also it is stored with factory signal grade data.
5. a kind of noise transducer of carrier state monitoring as claimed in claim 4, it is characterised in that: the factory signal grade
When data are that the noise transducer dispatches from the factory, the signal grade data tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821683041.5U CN209197893U (en) | 2018-10-17 | 2018-10-17 | A kind of noise transducer of carrier state monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821683041.5U CN209197893U (en) | 2018-10-17 | 2018-10-17 | A kind of noise transducer of carrier state monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209197893U true CN209197893U (en) | 2019-08-02 |
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ID=67408140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821683041.5U Active CN209197893U (en) | 2018-10-17 | 2018-10-17 | A kind of noise transducer of carrier state monitoring |
Country Status (1)
| Country | Link |
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| CN (1) | CN209197893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186746A (en) * | 2018-10-17 | 2019-01-11 | 杭州兆华电子有限公司 | A kind of noise transducer of carrier state monitoring |
-
2018
- 2018-10-17 CN CN201821683041.5U patent/CN209197893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186746A (en) * | 2018-10-17 | 2019-01-11 | 杭州兆华电子有限公司 | A kind of noise transducer of carrier state monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310000 No. 10, Xianqiao Road, Zhongtai street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Zhaohua Electronics Co.,Ltd. Address before: 310000 building 1-3, No. 31-1, Xianxing Road, Xianlin street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: CRY SOUND CO.,LTD. |