CN209247160U - A kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional - Google Patents
A kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional Download PDFInfo
- Publication number
- CN209247160U CN209247160U CN201920079845.2U CN201920079845U CN209247160U CN 209247160 U CN209247160 U CN 209247160U CN 201920079845 U CN201920079845 U CN 201920079845U CN 209247160 U CN209247160 U CN 209247160U
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- China
- Prior art keywords
- hot
- wire transducer
- directive property
- protective cover
- wire
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional.The device includes hot-wire transducer, insertion section and support connecting frame, and support connecting frame includes support column and connecting column, and connecting column connect with support column and is distributed along X-axis and Y direction, or is distributed along X-axis, Y-axis and Z-direction；One end of insertion section is arranged in hot-wire transducer, and the other end of insertion section is connect with connecting column.The utility model integrates multiple hot-wire transducers by support connecting frame, three, space, axial direction all has good 8 word directive property, the sound source that not only may be implemented on required multi-dimensional direction receives, and can also realize multidimensional positioning and detection to acoustic target.
Description
Technical field
The utility model relates to the sensor fields of acoustic measurement and positioning system, more particularly to one kind to have Spatial Multi-Dimensional
The hot-wire transducer device of 8 word directive property.
Background technique
Vector sensor is the sound for measuring sound field Vector Message (acoustic pressure gradient, particle vibration velocity, displacement or sound intensity etc.)
Receiving sensor.Acoustic pressure gradient sensor, particle vibration velocity sensor and acceleration can be divided into according to measured physical quantity difference
Sensor etc..
Hot-wire transducer is one kind of vector sensor, has had both low frequency sensitivity height, has more preferably inhibited ambient noise, is small-sized
The advantage of change.Shown in core (i.e. sensor chip) structure type such as Fig. 1 (a) of hot wire type sensor: You Lianggen is placed in parallel,
It is made of the thermal resistance wire of certain distance.After giving two thermal resistance wire galvanizations, the temperature at two resistance silks reaches stable state；Work as sound source
When being introduced directly into particle vibration velocity, cause temperature field that forced convection disturbance occurs, wherein a thermal resistance wire temperature increases, another heat
Hindering silk temperature reduces；Electric heating inhibition effect makes temperature difference be converted into resistance difference, and exportable voltage is shown.Due to linear sensor
This feature so that its have ' 8 ' the font directive property unrelated with frequency (see Fig. 1 (b)).
Summary of the invention
The purpose of this utility model is that will there is the hot-wire transducer of ' 8 ' font directive property to integrate, and is realized more
Tie up the sound source detection in direction.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional, including hot-wire transducer, insertion section and support
Connection frame, support connecting frame include support column and connecting column, and connecting column connect with support column and is distributed along X-axis and Y direction；Heat
One end of insertion section is arranged in line sensor, and the other end of insertion section is connect with connecting column.
Further, connecting column is also equipped in the Z-direction of support column.
Further, the outside of the insertion section is additionally provided with protective cover, and hot-wire transducer is located in protective cover.
Further, the end of the protective cover is connected with connecting column.
Preferably, be connected through a screw thread between the end of the protective cover and connecting column or be fixedly connected using screw or
Person directly bonds.
Preferably, slot is equipped in the protective cover, insertion section is mounted in protective cover by slot.
Further, sound pressure sensor is also equipped in the protective cover.
Further, the side of the protective cover is set there are two opening, and two are open along the axisymmetrical of protective cover, and
Opening ecto-entad gradually collapses, and throat's through-hole is formed at the gathering of two openings, it is logical that hot-wire transducer is placed on the throat
At hole.
The utility model integrates multiple hot-wire transducers by support connecting frame, in three, space axial direction
All there is good 8 word directive property, the sound source that not only may be implemented on required multi-dimensional direction receives, and can also realize to acoustic target
Multidimensional positioning and detection.
Detailed description of the invention
Fig. 1 is (a) structural schematic diagram of hot wire type sensor chip in the prior art, (b) directivity pattern.
Fig. 2 is a kind of structural schematic diagram of single hot-wire transducer of the present invention.
Fig. 3 is the structural schematic diagram of another single hot-wire transducer of the present invention.
Fig. 4 is the horn structural schematic diagram of protective cover in the embodiment of the present invention.
Fig. 5 is the hot-wire transducer structure drawing of device for having 8-shaped directive property simultaneously in the face xz and the face yz.
Fig. 6 is the hot-wire transducer structure drawing of device simultaneously in the face xz, the face yz and the face xy with 8-shaped directive property.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present embodiment provides the structure of an independent hot-wire transducer, as shown in Fig. 2, the setting of hot-wire transducer 1 is being inserted into
The one end in portion 2, the other end of insertion section 2 are connected with the connecting column 9 of support connecting frame 7.The connecting pin of insertion section 2 can be set to
Plate or tubular and other shapes, in order to realize the modes such as socket, embedded connection with connecting column.
Protective cover 3 can also be set in the outside of insertion section 2, as shown in figure 3, being equipped with slot on the side wall of protective cover 3
4, the inner fixation of protective cover 3 is inserted by slot 4 in insertion section 2, naturally it is also possible to insertion section 2 are fixed on protection using other means
In cover 3, protective cover 3 can play the role of protecting hot-wire transducer 1.
On the side wall of cylindrical protective cover 3, if there are two openings 5 to be used as horn structure, as shown in figure 4, two openings 5
Along cylindrical axisymmetrical.The opening angle ecto-entad of opening 5 gradually collapses, and forms throat at the gathering of two openings 5
Through-hole 6, the particle vibration velocity at the through-hole 6 is maximum, therefore hot-wire transducer 1 is placed on throat position, passes through protective cover 3
Horn structure provides gain amplifier for sound particle vibration velocity.
When needing sound source to be tested to be located on 0 ° of axis on 90 degree of axis simultaneously, due to the 8-shaped of hot-wire transducer
Directive property, the hot-wire transducer that independent one determining position is placed cannot receive the sound source on 90 degree of axis, therefore can incite somebody to action
Two hot-wire transducers (as having protective cover 3) are combined by support connecting frame 7, so that the two angle in 90 °, such as schemes
Shown in 5, which can have simultaneously 8-shaped directive property in the face xz and the face yz.
Support connecting frame 7 includes intermediate support column 8 and connecting column 9, and one end of connecting column 9 is connected with support column 8, another
End is connected with insertion section 2.The materials such as stainless steel, aluminium alloy can be used in the material of support connecting frame 7.The connecting column of support connecting frame
Fixed form between 9 and insertion section 2 is such as: side opens threaded hole and is screwed, bonds after being threadedly coupled, being embedded in.
If three hot-wire transducers combined by support connecting frame 7, two-by-two shape angle in 90 °, such as Fig. 6 institute
Show there can be 8-shaped directive property simultaneously in the face xz, the face yz and the face xy at this time, the sound source in 360 ° of orientation, 90 ° of pitching can be realized
It receives.
Sound source on above-mentioned multi-dimensional direction receives, and can only use individual hot-wire transducer 1, can also use integrated form
Vector sensor, such as fix a sound pressure sensor again on protective cover 3, fixed form can using bonding or other fix
Sound pressure sensor and hot-wire transducer 1 are structurally integrated into together by means, can obtain sound pressure information, sound particle vibration simultaneously
Fast information and sound intensity information.
Claims (8)
1. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional, which is characterized in that including hot-wire transducer, insert
Enter portion and support connecting frame, support connecting frame includes support column and connecting column, and connecting column connect with support column and along X-axis and Y-axis
Directional spreding；One end of insertion section is arranged in hot-wire transducer, and the other end of insertion section is connect with connecting column.
2. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 1, feature exist
In being also equipped with connecting column in the Z-direction of support column.
3. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 1 or 2, feature
It is, the outside of the insertion section is additionally provided with protective cover, and hot-wire transducer is located in protective cover.
4. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 3, feature exist
In the end of the protective cover is connected with connecting column.
5. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 4, feature exist
In being connected through a screw thread between the end and connecting column of the protective cover or be fixedly connected using screw or directly bonded.
6. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 3, feature exist
In equipped with slot in the protective cover, insertion section is mounted in protective cover by slot.
7. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 3, feature exist
In being also equipped with sound pressure sensor in the protective cover.
8. a kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional according to claim 3, feature exist
Set in, the side of the protective cover there are two opening, two openings along protective cover axisymmetrical, and be open ecto-entad by
It tapers, forms throat's through-hole at the gathering of two openings, hot-wire transducer is placed on the throat through hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018216525766 | 2018-10-12 | ||
| CN201821652576 | 2018-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247160U true CN209247160U (en) | 2019-08-13 |
Family
ID=67536365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920079845.2U Active CN209247160U (en) | 2018-10-12 | 2019-01-17 | A kind of hot-wire transducer device with 8 word directive property of Spatial Multi-Dimensional |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247160U (en) |
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2019
- 2019-01-17 CN CN201920079845.2U patent/CN209247160U/en active Active
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