CN102914355A - Standing wave method sound velocity measuring experiment device - Google Patents
Standing wave method sound velocity measuring experiment device Download PDFInfo
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- CN102914355A CN102914355A CN2012104549930A CN201210454993A CN102914355A CN 102914355 A CN102914355 A CN 102914355A CN 2012104549930 A CN2012104549930 A CN 2012104549930A CN 201210454993 A CN201210454993 A CN 201210454993A CN 102914355 A CN102914355 A CN 102914355A
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- receiving transducer
- lead screw
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- pedestal
- external member
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Abstract
The invention discloses a standing wave method sound velocity measuring experiment device which comprises a base, a transmitting transducer, a receiving transducer and a measuring device. The measuring device comprises a staff gauge, a micrometer hand wheel, a precise lead screw and a lead screw sleeve part. The transmitting transducer is fixed at the left end of the upper surface of the base, the precise lead screw and the lead screw sleeve part are arranged in a rectangular groove in the middle of the upper surface of the base, the receiving transducer is connected to the lead screw sleeve part, and the micrometer hand wheel drives the receiving transducer to perform horizontal movement for 1mm along the long-edge direction of the base when rotating for 360 degrees. Movement of the receiving transducer is controlled precisely through the micrometer hand wheel, touch with the receiving transducer is avoided, and measurement precision is improved by a grade simultaneously, thereby being favorable for further improving experimental effects.
Description
Technical field
The present invention relates to a kind of physics facility, be specially a kind of standing wave method and survey velocity of sound experimental provision.
Background technology
Standing wave method commonly used is surveyed the velocity of sound in the Physical Experiment, be respectively equipped with transmitting transducer and receiving transducer on the used Sound velocity measuring apparatus, wherein transmitting transducer is fixed on the main scale of a vernier caliper and is used for launching sound wave, and receiving transducer is input in the oscillograph after being fixed on and being used for receiving acoustic signals on the vernier scale and converting electric signal to.In the experimentation, need to change with the slow moving cursor chi of hand the position of receiving transducer, simultaneously the changes in amplitude of corresponding electric signal on the observation oscilloscope.According to standing wave theory, the distance that receiving transducer moved when maximum value appearred in adjacent twice signal amplitude is wave length of sound half, measures thus wave length of sound, and calculates the velocity of sound according to frequency.Owing to be difficult to accurately control amount of movement when using hand moving cursor chi, and usually touch receiving transducer, thereby cause easily jitter and generation measuring error on the oscillograph.
Summary of the invention
The object of the present invention is to provide a kind of standing wave method to survey velocity of sound experimental provision, it is more accurate and measure easily the velocity of sound with existing Sound velocity measuring apparatus phase specific energy.
In order to solve the problems of the technologies described above, the present invention is by the following technical solutions: a kind of standing wave method is surveyed velocity of sound experimental provision, comprise pedestal, transmitting transducer, receiving transducer and survey read apparatus, it is characterized in that: described survey read apparatus comprises scale, micrometer handwheel, accurate lead screw, screw mandrel external member; The base first of described transmitting transducer is fixed on the left end of described pedestal upper surface, the middle part of described pedestal upper surface is a rectangular groove, described accurate lead screw is horizontally placed on described groove middle part along the long side direction of described groove, the two ends rotation of described accurate lead screw is fixed on two broadsides of described groove, described screw mandrel external member is provided with a tapped manhole, described screw mandrel external member is set on the described accurate lead screw by described through hole, the upper surface of described screw mandrel external member is provided with a projection, the bonding jumper vertical with described groove long side direction, have an inverted concave notch that agrees with mutually with described bonding jumper size on the base second of described receiving transducer, described receiving transducer is plugged on the described bonding jumper by the described notch on the base second and links with described screw mandrel external member, and the base second of described receiving transducer is crossed on two long limits of described base recess; Described scale is fixed on the front of described pedestal along described groove long side direction, described micrometer handwheel is located on the right flank of described pedestal, the every rotation of described micrometer handwheel 360 degree drive described screw mandrel external member and described receiving transducer and move horizontally 1mm along the long side direction of described pedestal.
The minimum division value of described scale is 1mm.
The minimum division value of described micrometer handwheel is 0.01mm.
The invention has the beneficial effects as follows: can accurately control the movement of receiving transducer by rotating the micrometer handwheel, avoided touching with receiving transducer, measuring accuracy has improved a grade on the basis that does not change experimental principle simultaneously, is conducive to further improve experiment effect.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is front elevation of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 is the scheme of installation of the receiving transducer among the present invention.
Among the figure: 1. pedestal, 2. transmitting transducer, 3. receiving transducer, 4. scale, 5. micrometer handwheel, 11. grooves, 12. long limits, 13. accurate lead screws, 14. screw mandrel external members, 15. through holes, 16. bonding jumpers, 21. base first, 31. base second, 32. notches.
Embodiment
As shown in Figure 1 and Figure 2, the present invention includes pedestal 1, transmitting transducer 2, receiving transducer 3 and survey read apparatus, survey read apparatus with reference to figure 3, comprise scale 4, micrometer handwheel 5, accurate lead screw 13, screw mandrel external member 14; The base first 21 of transmitting transducer 2 is fixed on the left end of pedestal 1 upper surface, the middle part of pedestal 1 upper surface is a rectangular groove 11, accurate lead screw (13) is horizontally placed on groove (11) middle part along long limit (12) direction of groove (11), the two ends rotation of accurate lead screw (13) is fixed on two broadsides of groove (11), screw mandrel external member 14 is provided with a tapped manhole 15, screw mandrel external member 14 is set on the accurate lead screw 13 by through hole 15, and the upper surface of screw mandrel external member 14 is provided with a projection, bonding jumper 16 with long limit 12 perpendicular directions of groove 11; Have an inverted concave notch 32 that agrees with mutually with bonding jumper 16 sizes on the base second 31 of receiving transducer 3, notch 32 is plugged in the base second 31 that makes receiving transducer 3 on the bonding jumper 16 and links with screw mandrel external member 14, and base second 31 is crossed on two long limits 12 of base recess 11; Scale 4 is fixed on the below of pedestal 1 front receiving transducer 3 along long limit 12 directions of groove 11; Micrometer handwheel 5 is located on the right flank of pedestal 1, micrometer handwheel 5 every rotation 360 degree, and drive screw mandrel external member 14 and receiving transducer 3 move horizontally 1mm along long limit 12 directions of pedestal 1.
The minimum division value of scale 4 is 1mm.
The minimum division value of micrometer handwheel 5 is 0.01mm.
Claims (3)
1. a standing wave method is surveyed velocity of sound experimental provision, comprise pedestal (1), transmitting transducer (2), receiving transducer (3) and survey read apparatus, it is characterized in that: described survey read apparatus comprises scale (4), micrometer handwheel (5), accurate lead screw (13), screw mandrel external member (14); The base first (21) of described transmitting transducer (2) is fixed on the left end of pedestal (1) upper surface, the middle part of pedestal (1) upper surface is a rectangular groove (11), described accurate lead screw (13) is horizontally placed on groove (11) middle part along long limit (12) direction of groove (11), the two ends rotation of accurate lead screw (13) is fixed on two broadsides of groove (11), described screw mandrel external member (14) is provided with a tapped manhole (15), screw mandrel external member (14) is set on the accurate lead screw (13) by through hole (15), the upper surface of screw mandrel external member (14) is provided with a projection, bonding jumper (16) with long limit (12) perpendicular direction of groove (11), have an inverted concave notch (32) that agrees with mutually with bonding jumper (16) size on the base second (31) of described receiving transducer (3), receiving transducer (3) is plugged in upper and screw mandrel external member (14) binding of bonding jumper (16) by described notch (32), and base second (31) is crossed on two long limits (12) of base recess (11); Scale (4) is fixed on the front of pedestal (1) along the long limit (12) of groove direction, micrometer handwheel (5) is located on the right flank of pedestal (1), every rotation 360 degree of micrometer handwheel (5), drive screw mandrel external member (14) and receiving transducer (3) move horizontally 1mm along long limit (12) direction of pedestal (1).
2. a kind of standing wave method according to claim 1 is surveyed velocity of sound experimental provision, and it is characterized in that: the minimum division value of described scale (4) is 1mm.
3. a kind of standing wave method according to claim 1 is surveyed velocity of sound experimental provision, and it is characterized in that: the minimum division value of described micrometer handwheel (5) is 0.01mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104549930A CN102914355A (en) | 2012-11-14 | 2012-11-14 | Standing wave method sound velocity measuring experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104549930A CN102914355A (en) | 2012-11-14 | 2012-11-14 | Standing wave method sound velocity measuring experiment device |
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| Publication Number | Publication Date |
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| CN102914355A true CN102914355A (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012104549930A Pending CN102914355A (en) | 2012-11-14 | 2012-11-14 | Standing wave method sound velocity measuring experiment device |
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| CN (1) | CN102914355A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134859A (en) * | 2013-02-08 | 2013-06-05 | 孟钧 | Sound velocity method calibrator verification frame |
| CN105157810A (en) * | 2015-05-12 | 2015-12-16 | 南阳理工学院 | Fully automatic sound velocity measuring instrument and measurement method |
| CN106124026A (en) * | 2016-06-15 | 2016-11-16 | 华南理工大学 | A kind of ultrasonic channel energy decline modeling method and experimental provision thereof |
| CN109115326A (en) * | 2018-09-19 | 2019-01-01 | 安徽大学 | A kind of Sound velocity measuring apparatus and its application method receiving energy converter variable-angle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2463796Y (en) * | 2001-01-04 | 2001-12-05 | 株洲工学院 | Ultrasonic acoustic velocity measuring device |
| CN201965818U (en) * | 2010-12-31 | 2011-09-07 | 魏斌 | Novel sound velocity tester |
| CN202853736U (en) * | 2012-11-14 | 2013-04-03 | 江南大学 | Acoustic velocity determinator |
-
2012
- 2012-11-14 CN CN2012104549930A patent/CN102914355A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2463796Y (en) * | 2001-01-04 | 2001-12-05 | 株洲工学院 | Ultrasonic acoustic velocity measuring device |
| CN201965818U (en) * | 2010-12-31 | 2011-09-07 | 魏斌 | Novel sound velocity tester |
| CN202853736U (en) * | 2012-11-14 | 2013-04-03 | 江南大学 | Acoustic velocity determinator |
Non-Patent Citations (2)
| Title |
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| 尹殿云: "《医用物理实验》", 31 December 1999, 山东科学技术出版社 * |
| 曾碧新等: "《医用物理学实验》", 30 June 2005, 浙江大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134859A (en) * | 2013-02-08 | 2013-06-05 | 孟钧 | Sound velocity method calibrator verification frame |
| CN105157810A (en) * | 2015-05-12 | 2015-12-16 | 南阳理工学院 | Fully automatic sound velocity measuring instrument and measurement method |
| CN105157810B (en) * | 2015-05-12 | 2019-05-21 | 南阳理工学院 | A kind of full-automatic sound velocimeter and its measurement method |
| CN106124026A (en) * | 2016-06-15 | 2016-11-16 | 华南理工大学 | A kind of ultrasonic channel energy decline modeling method and experimental provision thereof |
| CN109115326A (en) * | 2018-09-19 | 2019-01-01 | 安徽大学 | A kind of Sound velocity measuring apparatus and its application method receiving energy converter variable-angle |
| CN109115326B (en) * | 2018-09-19 | 2024-04-09 | 安徽大学 | Sound velocity measuring instrument with variable angle of receiving transducer and use method thereof |
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Application publication date: 20130206 |