CN202976617U - An acoustic velocity measuring experimental device based on a single chip microcomputer - Google Patents
An acoustic velocity measuring experimental device based on a single chip microcomputer Download PDFInfo
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- CN202976617U CN202976617U CN 201220598230 CN201220598230U CN202976617U CN 202976617 U CN202976617 U CN 202976617U CN 201220598230 CN201220598230 CN 201220598230 CN 201220598230 U CN201220598230 U CN 201220598230U CN 202976617 U CN202976617 U CN 202976617U
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- single chip
- loudspeaker
- amplifying circuit
- microphone
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Abstract
An acoustic velocity measuring experimental device based on a single chip microcomputer is provided and comprises a single chip microcomputer circuit, a signal generating circuit, a filtering and amplifying circuit, an audio amplifying circuit, a dual trace oscilloscope, and an acoustic wave guiding tube module. The acoustic wave guiding tube module is formed by an acoustic wave guiding tube, a loudspeaker, and a microphone. The loudspeaker is hermetically fixed on one end of the acoustic wave guiding tube, while the microphone is mounted on the other end of the acoustic wave guiding tube and may move left and right along the tube length direction in the tube. The single chip microcomputer circuit is connected with the input end of the filtering and amplifying circuit via the signal generating circuit. One output end of the filtering and amplifying circuit is connected with the x axis input end of the dual trace oscilloscope while the other output end of the filtering and amplifying circuit is connected with the loudspeaker. The loudspeaker is connected with the input end of the audio amplifying circuit. The output end of the audio amplifying circuit is connected with the y axis input end of the dual trace oscilloscope. Compared with a product in the prior art, the acoustic velocity measuring experimental device has advantages of a simple structure, easy use, high stability, low cost, and short development period, and has good expandability.
Description
Technical field
The utility model relates to a kind of experiment device for teaching, is specifically related to a kind of SCM Based sound velocity testing experiment apparatus.
Background technology
Acoustic velocity measutement system in the acoustic frequency scope, available standing wave extremum method and phase-comparison method are measured the velocity of wave of sound wave, at the sense of hearing and successful visually, can be used as institution of higher education's Lab of General Physics device, but not yet have at present this type of experiment device for teaching to come out.
The utility model content
The purpose of this utility model is exactly the defective that exists for prior art, and a kind of SCM Based sound velocity testing experiment apparatus is provided.
Its technical scheme is: comprise single chip circuit, signal generating circuit, filter amplification circuit, audio amplifier circuit, two comprehensive oscillograph harmony waveguide module.Described acoustic waveguide tube module is made of acoustic waveguide tube, loudspeaker and microphone, and speaker seal is fixed on an end of acoustic waveguide tube, and microphone is arranged on the other end of acoustic waveguide tube, and can move left and right along the pipe range direction in pipe; Described single chip circuit is connected with the input end of filter amplification circuit by signal generating circuit, and the output terminal one tunnel of filter amplification circuit is connected with two comprehensive oscillographic x axle input ends, and another road is connected with loudspeaker; Described microphone is connected with the input end of audio amplifier circuit, and the output terminal of audio amplifier circuit is connected with two comprehensive oscillographic y axle input ends.
Wherein, described acoustic waveguide tube is the round plastic pipe, and its length is 0.8 m, and inner diameter d is 0.03 m.Described single chip circuit is is that AT89S52 chip and peripheral circuit thereof form by model.Described signal generating circuit is that AD9851 chip and peripheral circuit thereof form by model.
The utility model has the advantages such as simple in structure, easy to use, that stability is high, cost is low, the construction cycle is short, and has good extensibility compared with prior art.
Description of drawings
Fig. 1 is the circuit block diagram of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, a kind of SCM Based sound velocity testing experiment apparatus comprises single chip circuit 1, signal generating circuit 2, filter amplification circuit 3, audio amplifier circuit 5, two comprehensive oscillograph 4 harmony waveguide modules 6.Described acoustic waveguide tube module 6 is made of acoustic waveguide tube 9, loudspeaker 7 and microphone 8, and loudspeaker 7 sealings are fixed on an end of acoustic waveguide tube 9, and microphone 8 is arranged on the other end of acoustic waveguide tube 9, and can move left and right along the pipe range direction in pipe; Described single chip circuit 1 is connected by the input end of signal generating circuit 2 with filter amplification circuit 3, and the output terminal one tunnel of filter amplification circuit 3 is connected with the x axle input end of two comprehensive oscillographs 4, and another road is connected with loudspeaker 7; Described microphone 8 is connected with the input end of audio amplifier circuit 5, and the output terminal of audio amplifier circuit 5 is connected with the y axle input end of two comprehensive oscillographs 4.Wherein, described acoustic waveguide tube 9 is the round plastic pipe, and its length is 0.8 m, and inner diameter d is 0.03 m.Described single chip circuit 1 is to be that AT89S52 chip and peripheral circuit thereof form by model.Described signal generating circuit 2 is that AD9851 chip and peripheral circuit thereof form by model.
Claims (4)
1. SCM Based sound velocity testing experiment apparatus, comprise single chip circuit, signal generating circuit, filter amplification circuit, audio amplifier circuit, two comprehensive oscillograph harmony waveguide module, it is characterized in that: described acoustic waveguide tube module is made of acoustic waveguide tube, loudspeaker and microphone, speaker seal is fixed on an end of acoustic waveguide tube, microphone is arranged on the other end of acoustic waveguide tube, and can move left and right along the pipe range direction in pipe; Described single chip circuit is connected with the input end of filter amplification circuit by signal generating circuit, and the output terminal one tunnel of filter amplification circuit is connected with two comprehensive oscillographic x axle input ends, and another road is connected with loudspeaker; Described microphone is connected with the input end of audio amplifier circuit, and the output terminal of audio amplifier circuit is connected with two comprehensive oscillographic y axle input ends.
2. SCM Based sound velocity testing experiment apparatus according to claim 1, it is characterized in that: described acoustic waveguide tube is the round plastic pipe, and its length is 0.8 m, and inner diameter d is 0.03 m.
3. SCM Based sound velocity testing experiment apparatus according to claim 1 is characterized in that: described single chip circuit is for being that AT89S52 chip and peripheral circuit thereof form by model.
4. SCM Based sound velocity testing experiment apparatus according to claim 1, it is characterized in that: described signal generating circuit is that AD9851 chip and peripheral circuit thereof form by model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598230 CN202976617U (en) | 2012-11-14 | 2012-11-14 | An acoustic velocity measuring experimental device based on a single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220598230 CN202976617U (en) | 2012-11-14 | 2012-11-14 | An acoustic velocity measuring experimental device based on a single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976617U true CN202976617U (en) | 2013-06-05 |
Family
ID=48517662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220598230 Expired - Fee Related CN202976617U (en) | 2012-11-14 | 2012-11-14 | An acoustic velocity measuring experimental device based on a single chip microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202976617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384155A (en) * | 2022-01-12 | 2022-04-22 | 重庆医科大学 | Measuring system and method for measuring sound velocity of medium in waveguide |
| CN114485896A (en) * | 2022-01-25 | 2022-05-13 | 重庆医科大学 | Waveguide tube sound velocity measuring device and method based on polyvinylidene fluoride piezoelectric film |
-
2012
- 2012-11-14 CN CN 201220598230 patent/CN202976617U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384155A (en) * | 2022-01-12 | 2022-04-22 | 重庆医科大学 | Measuring system and method for measuring sound velocity of medium in waveguide |
| CN114485896A (en) * | 2022-01-25 | 2022-05-13 | 重庆医科大学 | Waveguide tube sound velocity measuring device and method based on polyvinylidene fluoride piezoelectric film |
| CN114485896B (en) * | 2022-01-25 | 2023-11-24 | 重庆医科大学 | Waveguide sound velocity measuring device and method based on polyvinylidene fluoride piezoelectric film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20141114 |
|
| EXPY | Termination of patent right or utility model |