CN202033100U - Multifunctional acoustic velocity measuring instrument - Google Patents
Multifunctional acoustic velocity measuring instrument Download PDFInfo
- Publication number
- CN202033100U CN202033100U CN2011200997642U CN201120099764U CN202033100U CN 202033100 U CN202033100 U CN 202033100U CN 2011200997642 U CN2011200997642 U CN 2011200997642U CN 201120099764 U CN201120099764 U CN 201120099764U CN 202033100 U CN202033100 U CN 202033100U
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- sound wave
- sound
- acoustic velocity
- measuring instrument
- velocity measuring
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Abstract
The utility model discloses a multifunctional acoustic velocity measuring instrument which includes a virtual oscilloscope and a function generator. Two branches led out from the virtual oscilloscope are connected with a sound wave transmitting terminal and a sound wave receiving terminal respectively (the sound wave transmitting terminal is connected with a loudspeaker). The sound wave receiving terminal is connected with a microphone, and a calibrated scale is arranged just beneath the loudspeaker and the microphone; the function generator is connected with the calibrated scale after calculating the sound wave data. The multifunctional acoustic velocity measuring instrument is convenient in operation since only a computer can complete the acquisition and analysis of the sound signal without other peripheral devices; the multifunctional acoustic velocity measuring instrument is strong in function, the instrument not only can measure the acoustic velocity directly, but also can acquire different signals by using the different performance functions in a flow chart, thus enabling the students to intuitively feel the influence of the sound wave frequency and amplitude on the sound; the multifunctional acoustic velocity measuring instrument is low in cost.
Description
Technical field
The utility model relates to the acoustic velocity measutement technical field, especially a kind of sound velocimeter.
Background technology
It is very abstract that traditional ultrasound wave is surveyed velocity of sound experimentation, because frequency of ultrasonic has exceeded the scope that people's ear can be heard, has been difficult to perceptual knowledge.The acoustic velocity measutement experiment is the Fundamental Physics Experiments that the student understands sound transmission, but the experiment about acoustics is also few in the present laboratory, middle school.Traditional ultrasound wave is surveyed velocity of sound experimental apparatus and is cost an arm and a leg, and abstract, and the student can only recognize the quantitative relationship between velocity of wave, wavelength and the frequency, and can't understand the influence to sound of the frequency of sound wave and amplitude.
The utility model content
The purpose of this utility model is to overcome the abstract problem that can't visual understanding of prior art ultrasonic measurement instrument cost height, display result, and the multi-functional sound velocimeter that a kind of cost is low, simple to operate, can intuitively show is provided.
For realizing above purpose, the utility model has been taked following technical scheme: multi-functional sound velocimeter, include virtual oscilloscope, function generator, described virtual oscilloscope is drawn two branch roads and is connected with sound wave emissions end, sound wave receiving end respectively, be connected with loudspeaker on the described sound wave emissions end), be connected with microphone on the described sound wave receiving end, under described loudspeaker and microphone, be provided with rule; Described function generator is connected to rule behind the sonic data as calculated.
The utility model compared with prior art has following advantage: the utility model is finished the direct measurement of the velocity of sound by the function generator and the digital oscilloscope of labview exploitation.Than adopting supercritical ultrasonics technology to measure the velocity of sound, the great advantage of this cover system is that perceptibility is good.Because the experiment can realize audiovideo in conjunction with, the eye ear and with, visual in image.The student can not only the personal experiences sound wave, and sound is had a sense organ understanding acoustically; Can also in depth understand the influence of the frequency of sound wave and amplitude, further understand the essence of sound transmission sound.In addition, this cover system also has other three big advantage.The one, easy to operate, just can finish collection and analysis as long as have a computing machine to voice signal, do not need peripheral miscellaneous equipment substantially; The 2nd, powerful.It not only can directly measure the velocity of sound, can also obtain different signals by the difference in functionality function in the call flow chart, thereby allows the student experience the influence to sound of the frequency of sound wave and amplitude intuitively.The 3rd, cost is low.Testing required hardware device only needs an earplug and a microphone that is worth about 20 yuan, is adapted at applying in the Physical Experiment.
Description of drawings
Fig. 1 is the utility model structure principle chart.
Embodiment
Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.
Embodiment:
See also accompanying drawing 1, multi-functional sound velocimeter, it includes virtual oscilloscope 1, function generator 2, virtual oscilloscope 1 is drawn two branch roads and is connected with sound wave emissions end 3, sound wave receiving end 4 respectively, be connected with loudspeaker 5 on the sound wave emissions end 3, be connected with microphone 6 on the described sound wave receiving end 4, under loudspeaker 5 and microphone 6, be provided with rule 7; Function generator 2 is connected to rule 7 behind the sonic data as calculated, and its computing formula is v=f λ, and wherein v is the velocity of sound, and f is the sound source vibration frequency, and λ is a wave length of sound.
Present embodiment utilizes computer programming to produce a signal, by sound card and earplug sound is sent out, and then utilizes microphone and sound card that signal is gathered, and be input to computer and the signal that sends compares, thereby calculate the speed of sound.Utilize this multi-functional sound velocimeter, the student can not only the personal experiences sound wave, and sound is had a sense organ understanding acoustically; Can also in depth understand the influence of the frequency of sound wave and amplitude, further understand the essence of sound transmission sound.
Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.
Claims (1)
1. multi-functional sound velocimeter, it is characterized in that: include virtual oscilloscope (1), function generator (2), described virtual oscilloscope (1) is drawn two branch roads and is connected with sound wave emissions end (3), sound wave receiving end (4) respectively, be connected with loudspeaker (5) on the described sound wave emissions end (3), be connected with microphone (6) on the described sound wave receiving end (4), under described loudspeaker (5) and microphone (6), be provided with rule (7); Described function generator (2) is connected to rule (7) behind the sonic data as calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200997642U CN202033100U (en) | 2011-04-07 | 2011-04-07 | Multifunctional acoustic velocity measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200997642U CN202033100U (en) | 2011-04-07 | 2011-04-07 | Multifunctional acoustic velocity measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033100U true CN202033100U (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200997642U Expired - Fee Related CN202033100U (en) | 2011-04-07 | 2011-04-07 | Multifunctional acoustic velocity measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033100U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841229A (en) * | 2012-09-24 | 2012-12-26 | 东南大学 | Waveform display method for virtual oscillograph |
| CN104006874A (en) * | 2014-05-12 | 2014-08-27 | 南京邮电大学 | Intelligent sound velocimeter |
| CN109297580A (en) * | 2018-11-05 | 2019-02-01 | 福建师范大学 | A kind of device and method measuring ultrasonic velocity |
-
2011
- 2011-04-07 CN CN2011200997642U patent/CN202033100U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841229A (en) * | 2012-09-24 | 2012-12-26 | 东南大学 | Waveform display method for virtual oscillograph |
| CN102841229B (en) * | 2012-09-24 | 2014-07-09 | 东南大学 | Waveform display method for virtual oscillograph |
| CN104006874A (en) * | 2014-05-12 | 2014-08-27 | 南京邮电大学 | Intelligent sound velocimeter |
| CN109297580A (en) * | 2018-11-05 | 2019-02-01 | 福建师范大学 | A kind of device and method measuring ultrasonic velocity |
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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: 20111109 Termination date: 20140407 |