CN209000324U - A kind of Doppler effect survey velocity of sound teaching demonstration experimental provision - Google Patents
A kind of Doppler effect survey velocity of sound teaching demonstration experimental provision Download PDFInfo
- Publication number
- CN209000324U CN209000324U CN201821151127.3U CN201821151127U CN209000324U CN 209000324 U CN209000324 U CN 209000324U CN 201821151127 U CN201821151127 U CN 201821151127U CN 209000324 U CN209000324 U CN 209000324U
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- CN
- China
- Prior art keywords
- bar shaped
- shaped shell
- mobile device
- ultrasonic wave
- doppler effect
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- 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.)
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Abstract
The utility model discloses a kind of Doppler effect to survey velocity of sound teaching demonstration experimental provision；Including bar shaped shell, bar shaped shell is accordion structure, is docked by left and right two housing sections, is connected by hinge at docking；Bottom is provided with guide rail in bar shaped shell, and the mobile device with idler wheel is placed on guide rail.Mobile device is built-in with direct current generator, and direct current generator drives idler wheel rotation, makes track of the mobile device along guide rail, move in bar shaped shell.The utility model has the advantages that small in size, easy to carry, easy to operate, relative error is smaller, is suitable as the apparatus for demonstrating of Doppler effect physics teaching due to having used folding bar shaped shell, electronic module.
Description
Technical field
The utility model relates to Physical Experiment equipment more particularly to a kind of Doppler effect to survey velocity of sound teaching demonstration experiment dress
It sets.
Background technique
College Physics is a theory and the course combined closely of experiment, and theory provides principle foundation to test, and tests and is
Theory provides specific implementation.With the development of Physical Experiment Course System, the problems such as physics experiment teaching and theory teaching disconnect
Gradually it is exposed.On theoretical classroom, the phenomenon that many students can not be visually observed that support theory, to theoretical understanding
The wording being limited only on textbook with application, theoretic comprehension is not deep, further affects subsequent experiment teaching effect.It is more
It is general strangle effect be College Physics theory teaching, experimental teaching important content, but there is currently most Doppler effect survey sound
Fast experimental provision is than cumbersome, and cumbersome, unsuitable class demonstration.Design more compact portable, easily operated, energy quickly
Lecture experiment apparatus for demonstrating assists College Physics theory teaching, is the urgent demand of teachers and students.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts and deficiency provide a kind of portable, storage side
Just Doppler effect surveys velocity of sound teaching demonstration experimental provision.
The utility model is achieved through the following technical solutions:
A kind of Doppler effect survey velocity of sound teaching demonstration experimental provision, including bar shaped shell 1, bar shaped shell 1 are collapsible
Structure is docked by left and right two housing sections, is connected at docking by hinge 10；
Bottom is provided with guide rail 2 in bar shaped shell 1, and the mobile device 5 with idler wheel is placed on guide rail 2.
Mobile device 5 is built-in with direct current generator, and direct current generator drives idler wheel rotation, makes mobile device 5 along the rail of guide rail 2
Mark moves in bar shaped shell 1.
The upper surface of the bar shaped shell 1 offers rectangle elongated slot 9 along its length；The top of mobile device 5 is equipped with
Ultrasonic wave receiving transducer 8, ultrasonic wave receiving transducer 8 are stretched out outside bar shaped shell 1 by rectangle elongated slot 9；The ultrasonic wave receives
The ontology and 9 clearance fit of rectangle elongated slot of probe 8；
The upper surface of 1 right end of bar shaped shell, the end of rectangle elongated slot 9 is provided with ultrasonic wave transmitting probe 6, ultrasonic wave
The direction of the launch of transmitting probe 6 is to positive excess acoustic receiver probe 8；Digitial controller 3 is installed on the inside of 1 right end of bar shaped shell.
In the on both sides of the middle wall corresponding position of bar shaped shell 1, it is embedded with a pair of of photoelectric door 11.
The ultrasonic wave transmitting probe 6, mobile device 5, ultrasonic wave receiving transducer 8, photoelectric door 11 are through filter and amplification level
Digitial controller 3 is connected to after conversion.
The utility model compared with the existing technology, have following advantages and effects
The utility model has small in size, easy to carry, behaviour due to having used folding bar shaped shell, electronic module
Make advantage simple, that relative error is smaller, is suitable as the apparatus for demonstrating of Doppler effect physics teaching.
The utility model mobile device is mobile by given speed in bar shaped shell, while the transmitting of ultrasonic wave transmitting probe is solid
Determine frequency ultrasonic wave, the ultrasonic signal received is sent stm32 module by receiving transducer, calculates and receives signal
Frequency, while photoelectric door obtains the momentary rate of mobile device, calculates the velocity of sound.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Specific embodiment
The utility model is more specifically described in detail combined with specific embodiments below.
The utility model discloses a kind of Doppler effect to survey velocity of sound teaching demonstration experimental provision, including bar shaped shell 1, item
Shape shell 1 is accordion structure, is docked by left and right two housing sections, is connected at docking by hinge 10；
Bottom is provided with guide rail 2 in bar shaped shell 1, and the mobile device 5 with idler wheel is placed on guide rail 2.
Mobile device 5 is built-in with direct current generator, and direct current generator drives idler wheel rotation, makes mobile device 5 along the rail of guide rail 2
Mark moves in bar shaped shell 1.
The upper surface of the bar shaped shell 1 offers rectangle elongated slot 9 along its length；The top of mobile device 5 is equipped with
Ultrasonic wave receiving transducer 8 (model: TCT40-16R), ultrasonic wave receiving transducer 8 are stretched out outside bar shaped shell 1 by rectangle elongated slot 9
Portion；The ontology and 9 clearance fit of rectangle elongated slot of the ultrasonic wave receiving transducer 8；
The upper surface of 1 right end of bar shaped shell, the end of rectangle elongated slot 9 be provided with ultrasonic wave transmitting probe 6 (model:
TCT40-16T), the direction of the launch of ultrasonic wave transmitting probe 6 is to positive excess acoustic receiver probe 8；Pacify the inside of 1 right end of bar shaped shell
Equipped with digitial controller 3 (chip model: STM32F103).
In the on both sides of the middle wall corresponding position of bar shaped shell 1, it is embedded with a pair of of 11 (model: PIDC-24V- of photoelectric door
NPN)。
The ultrasonic wave transmitting probe 6, mobile device 5, ultrasonic wave receiving transducer 8, photoelectric door 11 are through filter and amplification level
Digitial controller 3 is connected to after conversion.
Bar shaped shell 1 is folding structure, is docked by left and right two housing sections.When experiment, first by the item of folding
The expansion of shape shell 1 is laid flat, and each on shell is connected by electric wire with external power supply with electrical interface.Digitial controller is started to work
And experimental provision is initialized, mobile device reaches the other end of bar shaped shell 1 far from ultrasonic generator.Digitial controller control
Ultrasonic wave transmitting probe processed emits ultrasonic wave, and ultrasonic wave receives to trigger digitial controller, number control after probe receives ultrasonic wave
Device processed, which calculates ultrasonic frequency and controls ultrasonic wave transmitting probe, stops transmitting ultrasonic wave.User presses beginning key, number
Controller control direct current generator makes mobile device speed fast lifting, and mobile device is along guide rail to ultrasonic wave transmitting probe side
Mobile, photoelectric door detects that mobile device triggers digitial controller by making, and digitial controller controls supersonic generator and sends
Ultrasonic wave, ultrasonic wave, which receives triggering digitial controller after probe receives ultrasonic wave, to interrupt, and digitial controller calculates ultrasonic probe
Receive the frequency of ultrasonic wave.Digitial controller reads environment temperature from temperature sensor and calculates the theoretical velocity of sound.Mobile device
Completely by photoelectric door, the actual speed of mobile device is calculated in digitial controller, and digitial controller is according to Doppler effect
Real velocity of sound is calculated, and calculates the error between theoretical sound degree and real velocity of sound, by real velocity of sound, the theoretical velocity of sound, temperature,
Ultrasonic frequency at transmitting probe, ultrasonic frequency, temperature display be on a display screen at receiving transducer.Digitial controller control moves
Dynamic device shuts down.After experimental demonstration, presses and close key and pull out power supply electric wire, and folding tests device；Bar shaped
Shell plays the role of being effectively protected to experimental provision.
As described above, the utility model can be realized preferably.
The embodiments of the present invention is simultaneously not restricted to the described embodiments, other are any without departing from the utility model
Made changes, modifications, substitutions, combinations, simplifications under spiritual essence and principle, should be equivalent substitute mode, are included in
Within the protection scope of the utility model.
Claims (5)
1. a kind of Doppler effect surveys velocity of sound teaching demonstration experimental provision, including bar shaped shell (1), it is characterised in that: bar shaped shell
Body (1) is accordion structure, is docked by left and right two housing sections, is connected at docking by hinge (10)；
Bar shaped shell (1) interior bottom is provided with guide rail (2), the mobile device (5) with idler wheel is placed on guide rail (2).
2. Doppler effect surveys velocity of sound teaching demonstration experimental provision according to claim 1, it is characterised in that: mobile device
(5) it is built-in with direct current generator, direct current generator drives idler wheel rotation, makes mobile device (5) along the track of guide rail (2), in bar shaped shell
Body moves in (1).
3. Doppler effect surveys velocity of sound teaching demonstration experimental provision according to claim 1, it is characterised in that: the bar shaped shell
The upper surface of body (1) offers rectangle elongated slot (9) along its length；Ultrasonic wave is installed at the top of mobile device (5) and receives spy
Head (8), ultrasonic wave receiving transducer (8) stretch out bar shaped shell (1) outside by rectangle elongated slot (9)；The ultrasonic wave receiving transducer
(8) ontology and rectangle elongated slot (9) clearance fit；
The upper surface of bar shaped shell (1) right end, the end of rectangle elongated slot (9) are provided with ultrasonic wave transmitting probe (6), ultrasound
The direction of the launch of wave transmitting probe (6) pops one's head in (8) to positive excess acoustic receiver；Number is installed on the inside of bar shaped shell (1) right end
Controller (3).
4. Doppler effect surveys velocity of sound teaching demonstration experimental provision according to claim 3, it is characterised in that: in bar shaped shell
(1) on both sides of the middle wall corresponding position, is embedded with a pair of of photoelectric door (11).
5. Doppler effect surveys velocity of sound teaching demonstration experimental provision according to claim 4, it is characterised in that: the ultrasonic wave
Transmitting probe (6), mobile device (5), ultrasonic wave receiving transducer (8), photoelectric door (11) connect after filter and amplification level conversion
To digitial controller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151127.3U CN209000324U (en) | 2018-07-20 | 2018-07-20 | A kind of Doppler effect survey velocity of sound teaching demonstration experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151127.3U CN209000324U (en) | 2018-07-20 | 2018-07-20 | A kind of Doppler effect survey velocity of sound teaching demonstration experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209000324U true CN209000324U (en) | 2019-06-18 |
Family
ID=66796373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821151127.3U Expired - Fee Related CN209000324U (en) | 2018-07-20 | 2018-07-20 | A kind of Doppler effect survey velocity of sound teaching demonstration experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209000324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648578A (en) * | 2019-10-11 | 2020-01-03 | 泉州台商投资区中栓机械技术有限公司 | High school physics convex lens imaging teaching system |
-
2018
- 2018-07-20 CN CN201821151127.3U patent/CN209000324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648578A (en) * | 2019-10-11 | 2020-01-03 | 泉州台商投资区中栓机械技术有限公司 | High school physics convex lens imaging teaching system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190618 Termination date: 20210720 |