CN201345189Y - Ranging experimental instrument through audible sound waves - Google Patents
Ranging experimental instrument through audible sound waves Download PDFInfo
- Publication number
- CN201345189Y CN201345189Y CNU2009200678796U CN200920067879U CN201345189Y CN 201345189 Y CN201345189 Y CN 201345189Y CN U2009200678796 U CNU2009200678796 U CN U2009200678796U CN 200920067879 U CN200920067879 U CN 200920067879U CN 201345189 Y CN201345189 Y CN 201345189Y
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- CN
- China
- Prior art keywords
- microphone
- guide rail
- movable stand
- reflecting plate
- loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a ranging experimental instrument through audible sound waves. The experimental instrument comprises a loudspeaker cabinet, a loudspeaker, a movable stand for a microphone, the microphone, a microphone rod, a reflecting plate, a movable stand for the reflecting plate, a guide rail, a scale, a square-wave signal generator and an oscilloscope. The experimental instrument is characterized in that the loudspeaker cabinet is fixed at one end of the guide rail; the loudspeaker positioned in the loudspeaker cabinet is connected with the square-wave signal generator; the microphone arranged at the top of the microphone rod is connected with the oscilloscope through the square-wave signal generator; the bottom of the microphone rod is fixed on the movable stand for the microphone through a screw; the movable stand for the microphone is positioned above the guide rail and can move on the guide rail back and forth; the reflecting plate is fixed above the movable stand for the reflecting plate through a screw; the movable stand for the reflecting plate is positioned above the guide rail and can move on the guide rail back and forth; and the scale is positioned on one side of the guide rail. As the audible sound waves can be heard, and impulse waves can be displayed on the oscilloscope at the same time, compared with other ultrasonic ranging instruments, the experimental instrument of the utility model is more intuitional and is very suitable for being used in education.
Description
Technical field
The utility model relates to a kind of audible sound ranging experiment instrument that supplies education experiment to use.
Background technology
The straightforward procedure of finding range is to measure with chi, but for commonly used to stadimeter than the far object range finding, the stadimeter of using now has ultrasonic range finder, infrared range-measurement system, laser range finder.Ultrasonic ranging is commonly used to survey the seabed shoal of fish, submerged reef etc.No matter what stadimeter, its distance-finding method is to send pulsating wave, by measure the transponder pulse ripple with the pulsating wave that receives reflected back between time, obtain the time by velocity of wave, but the use stadimeter, the student is difficult to know ranging process, principle.In addition, the sound source that sound ranging is all used is ultrasound source, and sound be can't hear, inapplicable teaching.
Summary of the invention
The purpose of this utility model is to provide a kind of audible sound ranging experiment instrument.
The audible sound ranging experiment instrument that the utility model proposes, by loudspeaker enclosure 1, loudspeaker 2, microphone movable stand 3, microphone 4, microphone bar 5, reflecting plate 7, reflecting plate movable stand 9, guide rail 10, scale 11, square-wave signal takes place to form with microphone amplifier 12 and oscillograph 13, wherein: loudspeaker enclosure 1 is fixed in guide rail 10 1 ends, loudspeaker 2 is positioned at loudspeaker enclosure 1, loudspeaker 2 connection side's wave generators 12, microphone bar 5 tops are provided with microphone 4, microphone 4 takes place to be connected oscillograph 13 with microphone amplifier 12 by square-wave signal, microphone bar 6 bottoms are fixed on the microphone movable stand 3 by screw 6, microphone movable stand 3 is positioned at guide rail 10 tops, and can move around on guide rail 10; Reflecting plate 7 is fixed in reflecting plate movable stand 9 tops by screw 8, and reflecting plate movable stand 9 is positioned at guide rail 10 tops, and can move around on guide rail 10; Scale 11 is positioned at guide rail 10 1 sides.
In the utility model, the sound wave that loudspeaker 2 sends is the audible acoustic signals.The audible sound wave is listened and obtained like this, and pulsating wave can show on oscillograph simultaneously, and is relatively more directly perceived.Because sound can be listened, sound wave can be observed, and is suitable for very much teaching.
In the utility model, square-wave signal takes place and the signal that sends of microphone amplifier 12 is a low frequency signal.
Method of operating of the present utility model is as follows:
Make sound source (loudspeaker 2) uniformly-spaced send audible sound wave (pulsating wave), before loudspeaker 2, put microphone 4, microphone 4 takes place to join with microphone amplifier 12 and oscillograph 13 by square-wave signal, at this moment on oscillograph 13, show pulsating wave, behind microphone 4, put lastblock reflecting plate 7, at this moment second pulsating wave of 13 appearance on oscillograph used up demarcation on first and second pulsating wave, measures the time interval.Also can measure microphone 4 and receive the mistiming of reflecting plate 7, determine distance between A position and the B position in A position and the reflection of B position.
The utility model can also be done following expansion experiment: survey the velocity of sound under the situation of known distance; Measure the relation that (sound source and microphone) distance and (microphone) receive intensity of acoustic wave; Measure the different materials reflection strength.
The sound wave of the utility model after by baffle reflection received by microphone.Acoustic signals can show at oscillograph, draws distance thereby can measure the sound wave time back and forth by oscillograph.In addition, reflection plate material is also replaceable, can measure the reflecting effect of different reflecting plates.Because the audible sound wave is listened and obtained, pulsating wave can show on oscillograph simultaneously, thus compare with other ultrasonic rangings, relatively more directly perceived, be suitable for very much teaching.
Description of drawings
Fig. 1 is an audible sound ranging experiment instrument structural diagrams.
Number in the figure: 1 is loudspeaker enclosure, and 2 is loudspeaker, and 3 is the microphone movable stand, 4 is microphone, 5 is the microphone bar, and 6 is the microphone fixed screw, and 7 is reflecting plate, 8 is the reflecting plate fixed screw, 9 is the reflecting plate movable stand, and 10 is guide rail, and 11 is scale, 12 for square-wave signal takes place and microphone amplifier, and 13 is oscillograph.
Embodiment
Further specify the utility model below by embodiment.
Embodiment 1: following each parts are connected by mode shown in Figure 1, and these those skilled in the art all can smooth implementation.
High 160mm * 90mm * the 60mm that is of a size of of loudspeaker enclosure 1 length and width, loudspeaker 2 impedances are 8 Ω, rated power is 5W, the size length and width height of microphone movable stand 3 is 40mm * 35mm * 24mm, microphone 4 is an Electret condenser microphone, the size of microphone bar 5 is long to be 75mm, diameter is 6mm, the size of fixed screw 6 is long to be 13mm, and screw thread M4, reflecting plate 7 are of a size of 170mm * 125mm, the size of reflecting plate fixed screw 8 is long to be 13mm, screw thread M4, the size length and width height of reflecting plate movable stand 9 is 80mm * 33mm * 23mm, the size length and width height of guide rail 10 is 800mm * 100mm * 25mm.
In Fig. 1, loudspeaker 2 is to be fixed on guide rail 10 left ends.Microphone bar 5 is to be fixed on the microphone movable stand 3 by microphone bar fixed screw 6, and microphone movable stand 3 can move on guide rail 10; Reflecting plate 7 is to be fixed on the reflecting plate movable stand 9 by reflecting plate fixed screw 8, and reflecting plate movable stand 9 can move on guide rail 10.There is scale 11 on guide rail 10 sides.
Claims (3)
1, a kind of audible sound ranging experiment instrument, by loudspeaker enclosure (1), loudspeaker (2), microphone movable stand (3), microphone (4), microphone bar (5), reflecting plate (7), reflecting plate movable stand (9), guide rail (10), scale (11), square wave signal generator (12) and oscillograph (13) are formed, it is characterized in that loudspeaker enclosure (1) is fixed in guide rail (10) one ends, loudspeaker (2) is positioned at loudspeaker enclosure (1), loudspeaker (2) connection side's wave generator (12), microphone bar (5) top is provided with microphone (4), microphone (4) takes place to be connected oscillograph (13) with microphone amplifier (12) by square-wave signal, microphone bar (5) bottom is fixed on the microphone movable stand (3) by screw (6), microphone movable stand (3) is positioned at guide rail (10) top, and can move around on guide rail (10); Reflecting plate (7) is fixed in reflecting plate movable stand (9) top by screw (8), and reflecting plate movable stand (9) is positioned at guide rail (10) top, and can move around on guide rail (10); Scale (11) is positioned at guide rail (10) one sides.
2, audible sound ranging experiment instrument according to claim 1 is characterized in that the sound wave that loudspeaker (2) sends is the audible acoustic signals.
3, audible sound ranging experiment instrument according to claim 1 is characterized in that square wave signal generator (12) is a low frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200678796U CN201345189Y (en) | 2009-02-19 | 2009-02-19 | Ranging experimental instrument through audible sound waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200678796U CN201345189Y (en) | 2009-02-19 | 2009-02-19 | Ranging experimental instrument through audible sound waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345189Y true CN201345189Y (en) | 2009-11-11 |
Family
ID=41276773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200678796U Expired - Fee Related CN201345189Y (en) | 2009-02-19 | 2009-02-19 | Ranging experimental instrument through audible sound waves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345189Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601095A (en) * | 2016-12-16 | 2017-04-26 | 青岛海之源智能技术有限公司 | Ultrasonic ranging teaching experimental apparatus |
| CN111443254A (en) * | 2020-04-20 | 2020-07-24 | 维沃移动通信有限公司 | Ultrasonic reflection performance detection system and method |
-
2009
- 2009-02-19 CN CNU2009200678796U patent/CN201345189Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601095A (en) * | 2016-12-16 | 2017-04-26 | 青岛海之源智能技术有限公司 | Ultrasonic ranging teaching experimental apparatus |
| CN111443254A (en) * | 2020-04-20 | 2020-07-24 | 维沃移动通信有限公司 | Ultrasonic reflection performance detection system and method |
| CN111443254B (en) * | 2020-04-20 | 2022-05-24 | 维沃移动通信有限公司 | Ultrasonic reflection performance detection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20120219 |