CN219626176U - Demonstration teaching aid for automatically measuring propagation speed of sound in air at different temperatures - Google Patents

Abstract

The utility model discloses a demonstration teaching aid for automatically measuring the propagation speed of sound in air with different temperatures, which comprises a bracket with scales, a KY-037 sound sensor, a bracket, an Aruino Uno development plate, a button switch, an LCd1602 liquid crystal display instrument and a DS18B20 temperature sensor, wherein the bracket with scales is movably provided with the KY-037 sound sensor, the bottom of the bracket is fixedly provided with the bracket, the KY-037 sound sensor is connected with the Aruino Uno development plate, the Aruino Uno development plate is provided with the button switch, the Aruino Uno development plate is connected with a bread plate, a bread plate is connected with an LCd1602 liquid crystal display instrument, the DS18B20 temperature sensor is arranged on the bracket with scales, the bracket with scales is supported by the bracket, and the bracket is provided with two parts; the utility model can lead the experiment of automatically measuring the propagation speed of the sound in the air with different temperatures to be popular and understood, and the experiment result of the propagation speed at different temperatures to be visual.

Description

Demonstration teaching aid for automatically measuring propagation speed of sound in air at different temperatures

Technical Field

The utility model relates to the field of experimental teaching demonstration teaching aids, in particular to a demonstration teaching aid for automatically measuring propagation speeds of sound in air at different temperatures.

Background

Measuring the propagation velocity of sound in air is an important experiment in university physics education that can help students understand the propagation principle of sound and the propagation law of sound waves in air. The physical quantities to be measured in the experiment are the frequency, wavelength of sound and temperature of air, and then the propagation speed of sound is calculated using a formula where the speed is equal to the frequency multiplied by the wavelength. Other methods for measuring the propagation velocity of sound in air can be adopted, wherein more common methods are using resonance tubes, fixed frequency interferometers, time-difference methods and the like. The experiment is complex, and needs a certain physical basis and experimental skills to complete, and the method is difficult for the junior middle school students to understand.

The propagation speed of sound in air belongs to the knowledge of junior middle school physics, but the propagation speed measurement error of sound in air is great in junior middle school physical textbooks, and students are directly told the propagation speed of sound in air of different temperatures in the textbooks, and the students have questions about the propagation speed of sound in air of different temperatures.

Therefore, a demonstration teaching aid capable of automatically measuring the propagation speed of sound in air at different temperatures is needed. .

Disclosure of Invention

The utility model aims to overcome the technical defects, provide a demonstration teaching aid device for automatically measuring the propagation speed of sound in the air with different temperatures, and solve the problems that the experiment of automatically measuring the propagation speed of sound in the air with different temperatures is difficult to understand and the experimental result of the propagation speed at different temperatures is not visual enough.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides an automatic measure demonstration teaching aid of sound propagation velocity in different temperature air, includes support, KY-037 sound sensor, support, aruino Uno development board, button switch, bread board, LCd1602 LCD, DS18B20 temperature sensor of taking the scale, the support on the activity be provided with KY-037 sound sensor, the support bottom of taking the scale fixedly be provided with the support, KY-037 sound sensor be connected with Aruino development board, aruino Uno development board on be provided with button switch, aruino development board be connected with bread board, bread board be connected with LCd1602 LCD, DS18B20 temperature sensor set up on the support of taking the scale.

Further, the support with the scales is provided with scales, the support with the scales is supported by the support, and the two supports are arranged.

Further, two KY-037 sound sensors are arranged, each KY-037 sound sensor consists of a sensitive capacitor microphone for detecting sound and an amplifying circuit, and the two KY-037 sound sensors are arranged on the same line with the same height of the bracket with scales.

Further, the KY-037 sound sensor is input on an Aruino Uno development board through serial communication.

Further, the KY-037 sound sensor, the Aruino Uno development board and the LCd1602 liquid crystal display are connected through a bread board.

Compared with the prior art, the utility model has the advantages that: the method can lead the experiment of automatically measuring the propagation speed of the sound in the air with different temperatures to be popular and understood, and the experiment result is visual and visible at the propagation speeds with different temperatures.

Drawings

Fig. 1 is a schematic structural diagram of a demonstration teaching aid for automatically measuring the propagation speed of sound in air at different temperatures.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present utility model is conventionally put when used, it is merely for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, "plurality" means at least 2.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples:

the utility model provides an automatic measure demonstration teaching aid of sound propagation velocity in different temperature air, includes scaled support 1, KY-037 sound sensor 2, support 3, aruino Uno development board 4, button switch 5, bread board 6, LCD1602 liquid crystal display 7, DS18B20 temperature sensor 8, its characterized in that, scaled support 1 on the activity be provided with KY-037 sound sensor 2, scaled support 1 bottom fixedly be provided with support 3, KY-037 sound sensor 2 be connected with Aruino Uno development board 4, aruino Uno development board 4 on be provided with button switch 5, aruino Uno development board 4 be connected with bread board 6, bread board 6 be connected with LCD1602 liquid crystal display 7, DS18B20 temperature sensor 8 set up on scaled support 1.

The scale is arranged on the support 1 with the scale, the support 1 with the scale is supported by the support 3, and the two supports 3 are arranged.

The KY-037 sound sensors 2 are arranged in two, the KY-037 sound sensors 2 are composed of a sensitive capacitance microphone for detecting sound and an amplifying circuit, and the two KY-037 sound sensors 2 are arranged on the same line and the same height of the bracket 1 with scales.

The KY-037 sound sensor 2 is input on the Aruino Uno development board 4 through serial communication.

The KY-037 sound sensor 2, the Aruino Uno development board 4 and the LCd1602 liquid crystal display 7 are connected through the bread board 6.

Code for the examples:

in the practice of the utility model, the output of the KY-037 sound sensor is analog and digital. When the sound intensity reaches a certain threshold, it is activated. The sensitivity threshold may be adjusted by a potentiometer on the sensor. The analog output voltage varies with the intensity of sound received by the microphone. The sound sensor is used for measuring environmental noise, the potentiometer is used for zeroing the sound sensor, the two sound sensors are placed on a support with scales, the two sound sensors are located on the same straight line with the same height, the distance between the two sound sensors is read, and the distance is input to the Aruino Uno development board through serial communication. The method comprises the steps of generating lower-frequency and higher-loudness sound right in front of two sound sensors, recording the running time of the system when the first sound sensor receives the sound, recording the running time of the system when the second sound sensor receives the sound, measuring the propagation speed of the sound in the air by using a time difference and the distance between the two sensors, and obtaining the temperature of the current environment by using the DS18B20 sensor. After the measurement is completed, the button sensor is pressed down to measure the propagation speed of the sound in the air at different temperatures again, so that the error of the propagation speed of the sound in the air is reduced by multiple times of measurement, and meanwhile, the relation between the propagation speed of the sound in the air and the temperature can be explored.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims (5)

1. The utility model provides an automatic measure demonstration teaching aid of sound propagation velocity in different temperature air, includes support (1) of taking the scale, KY-037 sound sensor (2), support (3), aruino development board (4), button switch (5), bread board (6), LCd1602 liquid crystal display (7), DS18B20 temperature sensor (8), its characterized in that, support (1) of taking the scale on the activity be provided with KY-037 sound sensor (2), support (1) of taking the scale bottom fixedly be provided with support (3), KY-037 sound sensor (2) be connected with aruino development board (4), aruino development board (4) on be provided with button switch (5), aruino development board (4) be connected with bread board (6), bread board (6) be connected with LCd1602 liquid crystal display (7), DS18B20 temperature sensor (8) set up on support (1) of taking the scale.

2. The demonstration teaching aid for automatically measuring the propagation speed of sound in the air at different temperatures according to claim 1 is characterized in that scales are arranged on the graduated support (1), the graduated support (1) is supported by the support (3), and the two brackets (3) are arranged.

3. The demonstration teaching aid for automatically measuring the propagation speed of sound in the air at different temperatures according to claim 1 is characterized in that two KY-037 sound sensors (2) are arranged, each KY-037 sound sensor (2) consists of a sensitive capacitance microphone for detecting sound and an amplifying circuit, and the two KY-037 sound sensors (2) are arranged on the same height and the same line of a bracket (1) with scales.

4. The demonstration teaching aid for automatically measuring the propagation speed of sound in air at different temperatures according to claim 1, wherein the KY-037 sound sensor (2) is input on the AruinoUno development board (4) through serial communication.

5. The demonstration teaching aid for automatically measuring the propagation speed of sound in air at different temperatures according to claim 1, wherein the KY-037 sound sensor (2), the AruinoUno development board (4) and the LCd1602 liquid crystal display (7) are connected through a bread board (6).