CN220230714U - Audible sound velocity measuring instrument - Google Patents
Audible sound velocity measuring instrument Download PDFInfo
- Publication number
- CN220230714U CN220230714U CN202321814312.7U CN202321814312U CN220230714U CN 220230714 U CN220230714 U CN 220230714U CN 202321814312 U CN202321814312 U CN 202321814312U CN 220230714 U CN220230714 U CN 220230714U
- Authority
- CN
- China
- Prior art keywords
- signal generator
- double
- audible sound
- frequency
- signal
- 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.)
- Active
Links
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides an audible sound velocity measuring instrument, includes signal generator, and signal generator upside is equipped with double-deck sealed tube, and double-deck sealed tube right side wall slip passes the connection and is equipped with the measurement scale, and the one end connection that the measurement scale is located double-deck sealed tube inside is equipped with detection sensor, and double-deck sealed tube left side internal connection is equipped with the speaker. The signal generator control panel includes: the device comprises a signal output terminal, an amplitude adjusting knob, a frequency coarse adjusting knob, a frequency fine adjusting knob, a frequency/amplitude display selecting switch, a four-bit half digital display, a signal terminal to be tested, a signal input terminal, a power switch and a receiving distance adjusting hand wheel. Compared with the prior art, the utility model has the advantages that: under the condition of no need of other instruments, the sound velocity can be directly measured by using a plurality of different frequencies, and the device has the advantages of high measurement precision, low noise and convenient use and adjustment; the audible sound speed is measured by using the measuring instrument, and the measuring result is compared with the theoretical value, so that the error is small.
Description
Technical Field
The utility model relates to the technical field of sound velocity measuring instruments, in particular to an audible sound velocity measuring instrument.
Background
Measurement of acoustic wave characteristics is an important content of acoustic application technology, in particular speed measurement of acoustic waves. The sound velocity measuring instrument in the laboratory adopts ultrasonic waves as a sound source to measure, and at present, no sound velocity measuring instrument which uses audible sound as the sound source exists.
Disclosure of Invention
The utility model provides an audible sound velocity measuring instrument which comprises a signal generator, wherein a double-layer sealing tube is arranged on the upper side of the signal generator, a measuring scale is arranged on the right side wall of the double-layer sealing tube in a sliding penetrating mode, a detection sensor is arranged at one end, located inside the double-layer sealing tube, of the measuring scale in a connecting mode, and a loudspeaker is arranged at the inner portion of the left side of the double-layer sealing tube in a connecting mode.
As an improvement: and a synchronous moving device is connected between the lower side of the measuring scale and the right side of the signal generator.
As an improvement: the signal generator control panel includes: the device comprises a signal output terminal, an amplitude adjusting knob, a frequency coarse adjusting knob, a frequency fine adjusting knob, a frequency/amplitude display selecting switch, a four-bit half digital display, a signal terminal to be tested, a signal input terminal, a power switch and a receiving distance adjusting hand wheel.
As an improvement: the loudspeaker is connected with a signal output terminal of the signal generator.
Compared with the prior art, the utility model has the advantages that: under the condition of no need of other instruments, the sound velocity can be directly measured by using a plurality of different frequencies, and the device has the advantages of high measurement precision, low noise and convenient use and adjustment; the audible sound speed is measured by using the measuring instrument, and the measuring result is compared with the theoretical value, so that the error is small.
Drawings
FIG. 1 is a schematic diagram of an audible sound velocity meter according to the present utility model;
FIG. 2 is a functional block diagram of an audible sound speed meter according to the present utility model;
reference numeral control table:
1. a signal generator; 2. a double-layer sealing tube; 3. a detection sensor; 4. a speaker; 5. a synchronous moving device; 6. a signal generator.
Detailed Description
Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings.
As shown in fig. 1-2, an audible sound speed measuring instrument comprises a signal generator 6, wherein a double-layer sealing tube 2 is arranged on the upper side of the signal generator 6, a measuring scale 1 is arranged on the right side wall of the double-layer sealing tube 2 in a sliding penetrating connection mode, a detection sensor 3 is arranged at one end, located inside the double-layer sealing tube 2, of the measuring scale 1 in a connection mode, and a loudspeaker 4 is arranged at the inner connection of the left side of the double-layer sealing tube 2.
And a synchronous moving device 5 is connected between the lower side of the measuring scale 1 and the right side of the signal generator 6.
The signal generator 6 control panel comprises: the device comprises a signal output terminal, an amplitude adjusting knob, a frequency coarse adjusting knob, a frequency fine adjusting knob, a frequency/amplitude display selecting switch, a four-bit half digital display, a signal terminal to be tested, a signal input terminal, a power switch and a receiving distance adjusting hand wheel.
The loudspeaker 4 is connected to a signal output terminal of a signal generator 6.
In the practice of the present utility model,
connecting the detection sensor 3 to a signal input terminal;
the signal generator 6 connects the power line with the power supply, turns on the power switch, and preheats for about 10 minutes to work normally.
The frequency/amplitude display selection switch is switched to a frequency gear, at the moment, the reading displayed by the four-bit half-digital display is the magnitude of the signal frequency, the unit is the hertz, meanwhile, the corresponding HZ lamp beside the four-bit half-digital display is lighted, the frequency coarse adjustment knob and the frequency fine adjustment knob are adjusted, the required working frequency can be obtained, the frequency is selected between 2 and 5KHZ in general measurement, the number of measurement data sets is small when the frequency is too low, and the peak point position is not easy to find when the frequency is too high.
When the frequency/amplitude display selection switch is turned to an amplitude range, the reading displayed by the four-digit half-digital display is the amplitude of the sound wave detected by the detection sensor 3 at a certain position in the measuring instrument, and at the moment, the amplitude adjusting knob can be adjusted to adjust the output power of the signal source, so that the detection sensor 3 displays the position with the maximum reading value at the peak position, and the reading is between 0.3 and 1V.
And the distance receiving adjusting hand wheel is rotated, the measuring scale 1 is moved, and the positions of the wave crests or the wave troughs are gradually read out by the measuring scale 1 in the process that the detection sensor 3 is gradually moved from one end to the other end. When the four-bit half digital display displays the maximum value or the minimum value, the position of the measuring scale 1 is measured
The average wavelength lambda of the sound under the corresponding acoustic frequency is obtained by a progressive difference method or an average method, and the corresponding sound velocity can be obtained by the frequency value f.
The above description is illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, but is to be accorded the full scope of the claims.
Claims (4)
1. An audible sound speed meter comprising a signal generator (6), characterized in that: the utility model discloses a signal generator, including signal generator (6), signal generator, double-deck sealed tube (2) right side wall slip pass the connection and are equipped with measurement scale (1), measurement scale (1) are located inside one end connection of double-deck sealed tube (2) and are equipped with detection sensor (3), double-deck sealed tube (2) left side internal connection is equipped with speaker (4).
2. An audible sound speed meter according to claim 1, wherein: and a synchronous moving device (5) is connected between the lower side of the measuring scale (1) and the right side of the signal generator (6).
3. An audible sound speed meter according to claim 1, wherein: the signal generator (6) control panel comprises: the device comprises a signal output terminal, an amplitude adjusting knob, a frequency coarse adjusting knob, a frequency fine adjusting knob, a frequency/amplitude display selecting switch, a four-bit half digital display, a signal terminal to be tested, a signal input terminal, a power switch and a receiving distance adjusting hand wheel.
4. An audible sound speed meter according to claim 3, wherein: the loudspeaker (4) is connected with a signal output terminal of the signal generator (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321814312.7U CN220230714U (en) | 2023-07-11 | 2023-07-11 | Audible sound velocity measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321814312.7U CN220230714U (en) | 2023-07-11 | 2023-07-11 | Audible sound velocity measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220230714U true CN220230714U (en) | 2023-12-22 |
Family
ID=89187862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321814312.7U Active CN220230714U (en) | 2023-07-11 | 2023-07-11 | Audible sound velocity measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220230714U (en) |
-
2023
- 2023-07-11 CN CN202321814312.7U patent/CN220230714U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3585841B2 (en) | Fluid temperature measuring method and apparatus | |
| GB2338784A (en) | Measuring the speed of sound in a gas | |
| CN107238659A (en) | A kind of argoshield measuring method and device based on ultrasonic transducer | |
| CN108680651A (en) | Calibrating/the calibration system and method for pulse reflection ultrasonic device | |
| CN220230714U (en) | Audible sound velocity measuring instrument | |
| CN103235311A (en) | Ultrasonic ranging system for automobile back-up | |
| CN202066962U (en) | Multifunctional ultrasonic wave measuring instrument | |
| CN101520438A (en) | Tester for dynamic complex modulus and damping of loudspeaker vibrating diaphragm material | |
| Russell | Absorption coefficients and impedance | |
| CN202382846U (en) | Frequency-conversion distance acoustic velocity measuring experimental device | |
| CN203224613U (en) | Calibration device for GIS partial discharge ultrasonic detection device | |
| US8803560B2 (en) | Audio frequency device for audible eyes off measurements | |
| CN2476802Y (en) | Sound velocimeter | |
| CN103063868B (en) | Device and method for measuring flow rate of fluid | |
| CN207675295U (en) | A kind of ultrasound two-slit interference acoustic velocity measutement instrument | |
| CN206075646U (en) | A kind of High Precision Automatic acoustic velocity measutement demonstrator | |
| CN218724691U (en) | Device for measuring sound velocity by using smartphone Phosphox software based on resonance method | |
| CN110375896B (en) | Piezoresistive sensor dynamic and static characteristic calibration device and method based on liquid titration | |
| CN112964350B (en) | Method and system for absolute calibration of complex sensitivity of rotary hydrophone based on circular guide rail | |
| CN216645473U (en) | Mobile gas flow detection device | |
| CN212433407U (en) | Sound velocity measurement and positioning experimental instrument | |
| CN210293447U (en) | Noise measuring device of electric automobile motor system | |
| CN202632745U (en) | Violin sound check device | |
| JP2000171282A (en) | Acoustic volume meter for measuring volume difference | |
| SU1753398A1 (en) | Device for measurement of ultrasonic wave attenuation constant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |