CN101806615A - Acoustic speedometer - Google Patents
Acoustic speedometer Download PDFInfo
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- CN101806615A CN101806615A CN201010140247A CN201010140247A CN101806615A CN 101806615 A CN101806615 A CN 101806615A CN 201010140247 A CN201010140247 A CN 201010140247A CN 201010140247 A CN201010140247 A CN 201010140247A CN 101806615 A CN101806615 A CN 101806615A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 8
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- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses an acoustic speedometer. The acoustic speedometer comprises a sound wave entrance port, an LCD display screen, a sound wave original frequency display screen, a sensor linear speed display screen, a sound wave transmission speed display screen, a linear speed adjusting button, an infrared receiving tube A, an infrared receiving tube B, a motor shaft center, a turntable, a sensor, an infrared transmitting tube, a turntable circuit and a measuring circuit, wherein the infrared receiving tube A and the infrared receiving tube B are fixed on an instrument shell; and the sensor and the infrared transmitting tube are fixed on the turntable. The acoustic speedometer is a sound speed measuring device designed by utilizing doppler principle, has the advantages of simple structure, accurate sound speed measurement, convenient manufacture and simple operation, and can be widely applied to atmosphere measurement and all kinds of air transmission physical quantity measurement in conventional fields of teaching, test and the like.
Description
Technical field
The present invention relates to a kind of sonic test instrument.
Background technology
At present, it number is 00819651.6 that the instrument that is used for acoustic velocity measutement has Chinese patent application, name is called the apparatus and method that are used to measure the velocity of sound, this invention relates to the device that is used to measure the velocity of sound, this device comprises: the electric impulse production device that is used to produce the output electric pulse signal, be used for the selector of described output electric pulse conversion of signals for the output ping is used to reflect the ping of described output, produce the reverberator of the ping of reflection thus; Receiving converter, it is set to receive directly from the described output ping of described selector emission and the described reflected acoustic pulse signal that is reflected by described reverberator, wherein, the output ping that described receiving converter will receive is converted to the output electric pulse signal of reconstruction, and the ping that will reflect is converted to a reflection electric impulse signal of rebuilding, speed is determined device, is used to use the output electric pulse signal of this reconstruction and the pulse signal of this reconstruction to determine the velocity of sound.The present invention is different with above patented claim technology, is a kind of acoustic velocity measutement device that utilizes the Doppler's principle design, operates simple and easyly, can be widely used in imparting knowledge to students, the aeromerric moasurenont in conventional field such as test, the measurement of various air borne physical quantitys.
Summary of the invention
The objective of the invention is to design a kind of Doppler's principle that utilizes and carry out the acoustic velocity measutement device.
For achieving the above object, the invention provides a kind of acoustic speedometer, comprise sound wave entrance port, LCD display, sound wave original frequency display screen, pickup wire speed display screen, sonic transmissions speed display screen, power light, linear velocity adjustment knob, power switch, supply socket, infrared receiving tube A, infrared receiving tube B, electrical axis, rotating disk, sensor, infrared transmitting tube, rotating disk circuit, metering circuit, shell.
Described sound wave entrance port is positioned at instrument backboard top;
Described LCD display is positioned at the panel of instrument;
Described power light, linear velocity are adjusted knob and are positioned at panel LCD display below;
Described power switch, supply socket are positioned at power light, the linear velocity of instrument panel and adjust the knob below;
Described rotating disk is positioned at the side of shell;
Described electrical axis passes center of turntable, the driven by motor dial rotation;
Described infrared receiving tube A, infrared receiving tube B are fixed on the tool housing;
Described sensor, infrared transmitting tube are fixed on the rotating disk;
Described rotating disk circuit is positioned at rotating disk;
Described LCD display comprises sound wave original frequency display screen, pickup wire speed display screen, sonic transmissions speed display screen, from top to bottom is positioned on the panel.
Learn that according to Doppler effect when (dorsad) radar station is pointed in the motion of object, the echo carrier frequency that radar receives will be higher than the carrier frequency of (being lower than) transmitted wave.Frequency variation is proportional to the speed component of object radial motion.If a sound wave enters the sound wave entrance port, when rotating disk is static, sensor records a frequency of sound wave F1, when rotating disk is rotated counterclockwise, the frequency of sound wave that sensor records is F2, this moment, the rotational line speed of rotating disk was S ', and the transmission speed S of sound wave can pass through formula F 1/F2=S/ (S+S ') calculating so.Sensor only is taken at the signal between infrared receiving tube A, the B, and measuring infrared transmitting tube can be by the time between the infrared receiving tube, calculate the linear velocity S ' of sensor.
Circuit is made up of rotating disk circuit and metering circuit, and its turntable circuit is made up of acoustic signals receiver module, signal processing and amplifying module, sound wave modulation wireless transmitter module; Metering circuit is made up of wireless signal receiving demodulation module, amplification Shaping Module, infrared signal load module, single-chip microprocessor MCU, MD module, linear velocity adjusting module, LCD display module.
Described acoustic signals receiver module, sound wave modulation wireless transmitter module connect signal processing and amplifying module;
Described wireless signal receiving demodulation module connects amplifies Shaping Module, sound wave modulation wireless transmitter module;
Described single-chip microprocessor MCU connects infrared signal load module, MD module, linear velocity adjusting module, LCD display module, amplifies Shaping Module.
Circuit theory is that the sound wave entrance port in the rotating disk circuit receives acoustic signals, after the signal processing and amplifying, carry out sound wave modulation and the wireless metering circuit that is emitted to again, metering circuit receives and reconciles amplifies shaping behind the wireless signal and transfers to single-chip microprocessor MCU and carry out frequency of sound wave and detect, the infrared signal of the infrared transmitting tube of single-chip microprocessor MCU reception simultaneously emission is carried out the rotating disk linear velocity and is detected the line speed adjustment of going forward side by side, and the sound wave original frequency that single-chip microprocessor MCU draws processing, pickup wire speed, sonic transmissions speed are presented on the LCD display.
Acoustic speedometer of the present invention is simple in structure, acoustic velocity measutement accurate, it is simple and easy to be convenient to make, to operate, can be applicable to impart knowledge to students, the measurement of conventional field aeromerric moasurenont such as test, various air borne physical quantitys, if change the rotational speed (such as light velocity equivalence) of sensor kind or change rotating disk, then can allow people see electromagnetic wave.
Description of drawings
Fig. 1 is the rear perspective view of the embodiment of the invention.
Fig. 2 is the front perspective view of the embodiment of the invention.
Fig. 3 is an embodiment of the invention inner structure synoptic diagram.
Fig. 4 is an embodiment of the invention rotating disk circuit block diagram.
Fig. 5 is an embodiment of the invention metering circuit functional-block diagram.
Numeral explanation among the figure: 1, sound wave entrance port, 2, LCD display, 3, sound wave original frequency display screen, 4, pickup wire speed display screen, 5, sonic transmissions speed display screen, 6, power light, 7, linear velocity is adjusted knob, and 8, power switch, 9, supply socket, 10, infrared receiving tube A, 11, infrared receiving tube B, 12, electrical axis, 13, rotating disk, 14, sensor, 15, infrared transmitting tube, 16, rotating disk circuit, 17, metering circuit, 18, shell.
Embodiment
Fig. 1-3 is an embodiment of the invention structural representation, as shown in the figure, the sound wave entrance port can receive 1 and receive acoustic signals, LCD display 2 comprises sound wave original frequency display screen 3, pickup wire speed display screen 4, sonic transmissions speed display screen 5, can show the sound wave original frequency respectively, pickup wire speed, sonic transmissions speed, but power light 6 display power supply on off operating modes, linear velocity is adjusted knob 7 scalable rotating disk linear velocities, sensor 14 can record frequency of sound wave under the different linear velocity conditions of rotating disk 13, infrared receiving tube A10, infrared receiving tube B11 can receive infrared transmitting tube 15 can send infrared-ray, can be used for limiting sensor 14 and receive useful signal scope, rotating disk circuit 16, metering circuit 17 application drawings 4, principle shown in Fig. 5 carries out that acoustic signals is handled and with measured sound wave original frequency, pickup wire speed, sonic transmissions speed is presented on the LCD display 2.
Fig. 4-5 is the circuit block diagram of the embodiment of the invention.Circuit theory is that the sound wave entrance port in the rotating disk circuit 16 receives acoustic signals, after the signal processing and amplifying, carry out sound wave modulation and the wireless metering circuit 17 that is emitted to again, metering circuit 17 receives and reconciles amplifies shaping behind the wireless signal and transfers to single-chip microprocessor MCU and carry out frequency of sound wave and detect, the infrared signal of the infrared transmitting tube of single-chip microprocessor MCU reception simultaneously 15 emissions is carried out the rotating disk linear velocity and is detected the line speed adjustment of going forward side by side, and the sound wave original frequency that single-chip microprocessor MCU draws processing, pickup wire speed, sonic transmissions speed are presented on the LCD display 2.
The above for the person of ordinary skill of the art, can make other corresponding changes according to technical scheme of the present invention and technical conceive, and these change all should belong to claim protection domain of the present invention.
Claims (3)
1. sonic test instrument, it is characterized in that, the sound wave entrance port that comprises backboard, LCD display on the panel, sound wave original frequency display screen, pickup wire speed display screen, sonic transmissions speed display screen, power light, linear velocity are adjusted knob, power switch, supply socket, shell, infrared receiving tube A, infrared receiving tube B, electrical axis, rotating disk, sensor, infrared transmitting tube, rotating disk circuit, metering circuit are arranged on the instrument; Described sound wave entrance port is positioned at instrument backboard top; Described LCD display is positioned at the panel of instrument; Described power light, linear velocity are adjusted knob and are positioned at panel LCD display below; Described power switch, supply socket are positioned at power light, the linear velocity of instrument panel and adjust the knob below; Described rotating disk is positioned at the side of shell; Described electrical axis passes center of turntable, the driven by motor dial rotation; Described infrared receiving tube A, infrared receiving tube B are fixed on the tool housing; Described sensor, infrared transmitting tube are fixed on the rotating disk; Described rotating disk circuit is positioned at rotating disk.
2. as claims 1 described sonic test instrument, it is characterized in that LCD display comprises sound wave original frequency display screen, pickup wire speed display screen, sonic transmissions speed display screen, is positioned on the panel from top to bottom.
3. as claims 1 described sonic test instrument, it is characterized in that circuit comprises rotating disk circuit, metering circuit, the rotating disk circuit is made up of acoustic signals receiver module, signal processing and amplifying module, sound wave modulation wireless transmitter module; Metering circuit is made up of wireless signal receiving demodulation module, amplification Shaping Module, infrared signal load module, single-chip microprocessor MCU, MD module, linear velocity adjusting module, LCD display module; Described acoustic signals receiver module, sound wave modulation wireless transmitter module connect signal processing and amplifying module; Described wireless signal receiving demodulation module connects amplifies Shaping Module, sound wave modulation wireless transmitter module; Described single-chip microprocessor MCU connects infrared signal load module, MD module, linear velocity adjusting module, LCD display module, amplifies Shaping Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010140247 CN101806615B (en) | 2010-03-31 | 2010-03-31 | Acoustic speedometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010140247 CN101806615B (en) | 2010-03-31 | 2010-03-31 | Acoustic speedometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101806615A true CN101806615A (en) | 2010-08-18 |
| CN101806615B CN101806615B (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010140247 Active CN101806615B (en) | 2010-03-31 | 2010-03-31 | Acoustic speedometer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04135544A (en) * | 1990-09-27 | 1992-05-11 | Olympus Optical Co Ltd | Sound speed distribution detecting device in body to be examined |
| US5125273A (en) * | 1989-10-13 | 1992-06-30 | Nissan Motor Company, Limited | Method and apparatus for measuring the speed of an ultrasonic wave |
| JPH11271445A (en) * | 1998-03-26 | 1999-10-08 | Hitachi Zosen Corp | Apparatus and method for detection of distance up to cruising object |
| JP2002181619A (en) * | 2000-12-12 | 2002-06-26 | Kyoto Electron Mfg Co Ltd | Absolute sound speed measuring method and device of ultrasonic wave |
| CN1670491A (en) * | 2005-05-16 | 2005-09-21 | 中国科学院力学研究所 | Method for detecting active sound wave in supersonic flow field |
-
2010
- 2010-03-31 CN CN 201010140247 patent/CN101806615B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125273A (en) * | 1989-10-13 | 1992-06-30 | Nissan Motor Company, Limited | Method and apparatus for measuring the speed of an ultrasonic wave |
| JPH04135544A (en) * | 1990-09-27 | 1992-05-11 | Olympus Optical Co Ltd | Sound speed distribution detecting device in body to be examined |
| JPH11271445A (en) * | 1998-03-26 | 1999-10-08 | Hitachi Zosen Corp | Apparatus and method for detection of distance up to cruising object |
| JP2002181619A (en) * | 2000-12-12 | 2002-06-26 | Kyoto Electron Mfg Co Ltd | Absolute sound speed measuring method and device of ultrasonic wave |
| CN1670491A (en) * | 2005-05-16 | 2005-09-21 | 中国科学院力学研究所 | Method for detecting active sound wave in supersonic flow field |
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| CN101806615B (en) | 2012-12-26 |
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Address after: 518000 North Block, 4th Floor, Building 49, Block B, Tanglang Industrial Zone, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Nanfang Tyco Sensor Technology Co.,Ltd. Country or region after: China Address before: 518000 North Block, 4th Floor, Building 49, Block B, Tanglang Industrial Zone, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Souther Tiger Software Technology Co.,Ltd. Country or region before: China |
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