CN2699264Y - Sound detecting transducer - Google Patents
Sound detecting transducer Download PDFInfo
- Publication number
- CN2699264Y CN2699264Y CN 200420031682 CN200420031682U CN2699264Y CN 2699264 Y CN2699264 Y CN 2699264Y CN 200420031682 CN200420031682 CN 200420031682 CN 200420031682 U CN200420031682 U CN 200420031682U CN 2699264 Y CN2699264 Y CN 2699264Y
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- sound
- detecting
- sound detection
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Abstract
The utility model discloses a sound detecting transducer with reasonable arrangement and high distinguishability. A sound testing frame is used to shield the surrounding noise out of the detecting hole at the lower part. At least two sound sensors are positioned in the high and low position so as to make the acoustic intensity of the received signal change; the utility model can realize the detection to the size of the sound of the detected object after the differential processing of the processor. The transducer is sensitive to the sound of close range and has good noise inhibiting effect to the surrounding noise; therefore, the transducing is true and the detecting is accurate. The utility model can be used in a machine with large mechanicalness noise, especially used for detecting the bank bill with better detecting effect and low cost.
Description
Technical field
The utility model relates to a kind of pick-up unit of intensity of sound.
Background technology
At present, general voice detector owing to can not get rid of the interference of measuring sound source environmental noise in addition effectively, is affected the accuracy of sound detection when carrying out sound detection.Particularly when environmental noise and detected intensity of sound be with the order of magnitude or environmental noise than detected when loud, voice detector almost can't operate as normal, the practical significance of its testing result and credibility also obviously reduce.The occasion that this is less demanding for accuracy of detection or environmental noise is little still can be used, but for detecting or the bigger testing conditions of mechanical drive noise such as the well-pressed degree of banknote, can error size then be the primary factor that use.Cause the reason of the above-mentioned defective of sound detection sensor to mainly contain: the one, sensor is bad to the environmental noise shielding; The 2nd, the sound sensitive device is poor to the particular sound source recognition capability; The 3rd, processor is not good enough to signal processing method.Thereby be difficult to reach the effect of detection.
Summary of the invention
The purpose of this utility model just provides a kind of simple in structure, and resolution height, shielding and the good sound detection sensor of treatment effect are set rationally.
The technical scheme that the utility model is taked is: a trumpet-shaped sound detection hole 5 is set in sound detection frame 4 bottoms, and the degree of depth that detects hole 5 generally is no more than 30 millimeters, is preferably in 5～15 millimeters.Testing stand 4 is except that detecting hole 5, and remainder adopts the effective material of shielded sound to make its whole sealings.Adopt two sound sensitive device reception voice signals of coupling mutually, according to the sound intensity and sound sensitive device square principle that is inversely proportional to apart from the sound source distance, have at least two sound sensitive devices to take high infraversion malposition to place, be that the sensor detection faces is not put in same plane, and make its height straggly, the position forms difference in height, produces range difference apart from sound source.The voice signal that the sound sensitive device receives is near more, and its difference is big more; Voice signal is far away more, and its difference is more little, after such signal process processor 1 difference processing, can reduce apart from the influence of sound detection device large-signal sound source far away.The distance of the high infraversion malposition of sound sensitive device is determined according to the situation of tested object, service condition and environmental noise, the excessive or too small detection effect that all will influence of distance.Too small then effect does not show; Excessive then difficult treatment.Therefore, dislocation distance is good at 5～15 millimeters.
The utility model is owing to adopted technique scheme, and except that detecting hole 5, circumferential closed sound detection frame 4 masks the sound around other, makes its sound sensitive to 5 fronts, bell mouth shape sound detection hole.The sound sensitive device 2 that high infraversion malposition is placed is different with the voice signal sound intensity that sound sensor 3 receives, different to sound sensitive device 2 and 3 effects that produce, pass through processor 4 difference processing again, get final product sound source or noise jamming that the non-detected object of filtering produces, improve the precision that detects.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: processor 1 sound sensitive device 2 sound sensitive devices 3 sound detection framves 4 sound detection holes 5
Embodiment
The profile of sound detection frame 4 of the present utility model and size determine according to concrete service condition, material with to the sound shield effectiveness good be first-selection, can adopt the making of metal or plastic or other material.The shape that is embedded in the sound detection hole 5 of testing stand 4 bottoms can be cylindrical, square a, rectangular parallelepiped or trapezoidal etc., and horn-like opening is advisable; Detecting hole depth need be too dark, is generally less than 15 millimeters.Two sound sensitive devices 2 and 3 function should be mated, and adopt post pole body microphone etc. all can; The position of placing 10 millimeter that should just stagger satisfy the requirement apart from the principle that square is inversely proportional to of sound source distance of the sound intensity and sound sensitive device to guarantee reception.Sound sensitive device 2 and 3 carries out difference processing with the 4 pairs of signals of the treated device of signal that receive respectively, masks apart from sound detection device large-signal sound source far away, accurately reflects the sound size and the intensity of checked object.By the sound detection sensor that described material and microphone are made, its cost is less than 100 yuan, and 2000 yuan like product can substitute imports.
The utility model is fit to be applied to especially be suitable for detections such as the well-pressed degree of banknote in the big machine of surrounding environment or self mechanicalness noise.
Claims (3)
1, a kind of sound detection sensor, form by sound detection frame, sound sensitive device and processor etc., it is characterized in that: a horn-like sound detection hole (5) is arranged at sound detection frame (4) bottom, remainder all seals, have at least two high infraversion malpositions of sound sensitive device to place, after making the treated device of voice signal (1) difference processing of detection, reduce influence apart from sound detection device large-signal sound source far away.
2, sound detection sensor according to claim 1 is characterized in that, the degree of depth in described sound detection hole (5) is preferably in 5～15 millimeters.
3, sound detection sensor according to claim 1 is characterized in that, the distance of the high infraversion malposition of described sound sensitive device is preferably in 5～15 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031682 CN2699264Y (en) | 2004-05-24 | 2004-05-24 | Sound detecting transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031682 CN2699264Y (en) | 2004-05-24 | 2004-05-24 | Sound detecting transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699264Y true CN2699264Y (en) | 2005-05-11 |
Family
ID=34772513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420031682 Expired - Fee Related CN2699264Y (en) | 2004-05-24 | 2004-05-24 | Sound detecting transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2699264Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767735B (en) * | 2005-12-21 | 2012-10-10 | 三菱电机株式会社 | Elevator control device |
| CN103090963A (en) * | 2011-11-07 | 2013-05-08 | 技嘉科技股份有限公司 | Volume detection method and volume detection device |
| TWI458943B (en) * | 2011-11-02 | 2014-11-01 | Giga Byte Tech Co Ltd | Method for volume inspection and inspection device using the same |
-
2004
- 2004-05-24 CN CN 200420031682 patent/CN2699264Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767735B (en) * | 2005-12-21 | 2012-10-10 | 三菱电机株式会社 | Elevator control device |
| TWI458943B (en) * | 2011-11-02 | 2014-11-01 | Giga Byte Tech Co Ltd | Method for volume inspection and inspection device using the same |
| CN103090963A (en) * | 2011-11-07 | 2013-05-08 | 技嘉科技股份有限公司 | Volume detection method and volume detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANSHAN BOZONG SCIENCE CO., LTD. Free format text: FORMER OWNER: QIU LIN Effective date: 20070824 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070824 Address after: 114044, No. 366, Qianshan Road, Anshan, Liaoning, 2 Patentee after: Anshan Bozong Science&Technology Co., Ltd. Address before: 114001 Anshan province Liaoning City Tiedong District Garden Xinbin Committee 20 group Patentee before: Qiu Lin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050511 Termination date: 20100524 |