Numerical control Doppler effect and sound velocity experimental instrument

Abstract

The utility model discloses a numerical control Doppler effect and sound velocity experimental instrument, which is characterized by further comprising a dismounting structure arranged on a base, the dismounting structure comprises a positioning column arranged on the base, a ring groove arranged on the positioning column, a connecting seat movably arranged on the base and a positioning screw movably arranged on the connecting seat; a transmitting transducer can be installed on the connecting seat, and a receiving transducer and a reflecting plate can also be installed on the connecting seat. According to the utility model, through the arrangement of the dismounting structure, the transmitting transducer, the receiving transducer and the reflecting plate can be dismounted, so that the receiving transducer can be mounted on a trolley to carry out a direct Doppler effect and sound velocity measurement experiment during an experiment, and the receiving transducer can also be mounted on a base parallel to the position of the transmitting transducer; and the reflecting plate is arranged on a trolley to carry out a reflecting Doppler effect and sound velocity measurement experiment.

Description

Technical Field

[0001] The utility model relates to the field of university physics experimental instruments, in particular to a digitally controlled Doppler effect and sound velocity experimental instrument. Background Art

[0002] University physics is a course that closely combines theory and experiment. Theory provides the principle basis for experiment, and experiment provides specific implementation for theory. With the development of the physical experiment course system, problems such as the disconnection between physical experiment teaching and theoretical teaching have gradually been exposed. In theoretical classes, many students cannot intuitively observe the phenomena that support the theory. Their understanding and application of the theory are limited to the words in the textbook. The lack of a deep understanding of the theory further affects the subsequent experimental teaching effect. The Doppler effect and sound speed measurement are important contents of university physics theoretical teaching and experimental teaching; therefore, configuring a Doppler effect and sound speed experiment instrument during teaching can help students intuitively and deeply understand the theory.

[0003] However, the existing Doppler effect and sound velocity tester can only perform direct Doppler effect and sound velocity test, for example, the patent number is CN200720106450.4, and the patent name is Doppler effect and sound velocity comprehensive tester, which can only perform direct Doppler effect and sound velocity measurement test, but cannot perform reflection Doppler effect and sound velocity measurement test. If reflection Doppler effect and sound velocity measurement test is to be performed, another tester specially used for reflection test can be made separately, but the cost is high. In order to improve the diversity and integrity of the experiment and reduce the cost, an tester that can perform both direct Doppler effect and sound velocity measurement test and reflection Doppler effect and sound velocity measurement test needs to be set. Therefore, a digitally controlled Doppler effect and sound velocity tester is proposed. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a digitally controlled Doppler effect and sound velocity experiment instrument.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a digitally controlled Doppler effect and sound speed experiment instrument, comprising a base, a driving mechanism installed on the base, a limit protection photoelectric gate and a speed measurement photoelectric gate installed on the base, a base installed on the base, a transmitting transducer installed on the base and a trolley movably installed on the base, and the trolley is also installed with a base; it is characterized in that it also includes a disassembly and assembly structure arranged on the base, the disassembly and assembly structure includes a positioning column arranged on the base, a ring groove arranged on the positioning column, a connecting seat movably installed on the base, and a positioning screw movably installed on the connecting seat; the transmitting transducer is installed on the connecting seat, and the connecting seat can also be installed with a receiving transducer and a reflecting plate.

[0006] Further preferably, the driving mechanism includes a motor mounted on a base, a synchronous pulley mounted on the motor and a base for mounting a transmitting transducer, and a synchronous belt mounted on the synchronous pulley and fixedly connected to the trolley on one side; a guide rail is also mounted on the base, and a slider slidably connected to the guide rail is mounted on the trolley.

[0007] Further preferably, it also includes a ruler installed on the base and a vernier installed on the trolley.

[0008] Further preferably, it also includes a camera installed on the trolley for photographing the vernier and the ruler.

[0009] Further preferably, it also includes a mounting tube installed on the base and a receiving line support rod installed in the mounting tube, and a wire hanging clip is installed on the receiving line support rod.

[0010] Further preferably, it also includes a travel switch installed on the base and a travel bumper installed on the trolley corresponding to the travel switch.

[0011] Further preferably, it also includes a light blocking plate arranged on the trolley corresponding to the position limit protection photoelectric door and the speed measurement photoelectric door.

[0012] Further preferably, an angle ruler is also included on the connecting seat.

[0013] Further preferably, it also includes a partition plate installed on the base; the reflective plate is set at 90°.

[0014] The beneficial effects of the utility model are as follows: through the setting of the disassembly structure, the transmitting transducer, the receiving transducer and the reflecting plate can be disassembled, so that when doing experiments, the receiving transducer can be installed on the trolley to perform direct Doppler effect and sound speed measurement experiments, or the receiving transducer can be installed on a base parallel to the position of the transmitting transducer, and the reflecting plate can be installed on the trolley to perform reflection Doppler effect and sound speed measurement experiments;

[0015] By installing a camera on the trolley, the camera can be used to photograph the cursor and scale, and the captured image data can be uploaded to the control terminal, so that the operator can observe the position of the trolley in real time through the camera when conducting experiments remotely. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0017] Attached Figure 2 It is a partial structural schematic diagram of the utility model;

[0018] Attached Figure 3 It is a partial structural schematic diagram of the utility model;

[0019] Attached Figure 4 It is a schematic diagram of the cross-sectional structure of the disassembly and assembly structure in the utility model.

[0020] Legend: 1. Base; 11. Ruler; 12. Vernier; 13. Camera; 14. Mounting tube; 15. Receiving line support rod; 16. Wire hanging clamp; 17. Travel switch; 18. Travel bumper; 19. Light baffle; 2. Driving mechanism; 21. Motor; 22. Synchronous pulley; 23. Synchronous belt; 24. Guide rail; 25. Slider; 3. Limit protection photoelectric gate; 31. Speed ​​measuring photoelectric gate; 4. Base; 41. Positioning column; 42. Ring groove; 43. Connecting seat; 44. Positioning screw; 5. Trolley; 6. Receiving transducer; 7. Reflector; 8. Angle ruler; 9. Partition plate; 10. Transmitting transducer. DETAILED DESCRIPTION

[0021] The following is a further description of the digital controlled Doppler effect and sound velocity experiment instrument of the present invention with reference to the accompanying drawings.

[0022] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the utility model are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-4As shown in, a numerically controlled Doppler effect and sound speed experiment instrument comprises a base 1, a driving mechanism 2 mounted on the base 1, a position-limiting protection photoelectric gate 3 and a speed measuring photoelectric gate 31 mounted on the base 1, a base 4 mounted on the base 1, a transmitting transducer 10 mounted on the base 4, and a trolley 5 movably mounted on the base 1, and the trolley 5 is also mounted with the base 4; it is characterized in that it also comprises a disassembly and assembly structure arranged on the base 4, and the disassembly and assembly structure comprises a positioning column 41 arranged on the base 4, a ring groove 42 arranged on the positioning column 41, a connecting seat 43 movably mounted on the base 4, and a positioning screw 44 movably mounted on the connecting seat 43; the transmitting transducer 10 is mounted on the connecting seat 43, and the connecting seat 43 can also be mounted with a receiving transducer 6 and a reflecting plate 7;

[0025] By setting the disassembly structure, the transmitting transducer 10, the receiving transducer 6 and the reflecting plate 7 can be detached, so that when doing experiments, the receiving transducer 6 can be installed on the trolley 5 to perform direct Doppler effect and sound speed measurement experiments, or the receiving transducer 6 can be installed on the base 1 parallel to the transmitting transducer 10, and the reflecting plate 7 can be installed on the trolley 5 to perform reflection Doppler effect and sound speed measurement experiments;

[0026] Through the setting of the positioning screw 44 and the annular groove 42 on the positioning column 41, when one end of the positioning screw 44 extends into the annular groove 42, it plays a limiting blocking role with the upper and lower positions of the connecting seat 43 on the base 4. When the positioning screw 44 is located in the annular groove 42 and is tightened, the connecting seat 43 can be rotated to adjust the angle. After the angle adjustment is completed, tighten the positioning screw 44 so that the positioning screw 44 presses against the positioning column 41 to complete the angle position limitation.

[0027] In one embodiment, the driving mechanism 2 includes a motor 21 installed on the base 1, a synchronous pulley 22 installed on the motor 21 and the base 4 for installing the transmitting transducer 10, and a synchronous belt 23 installed on the synchronous pulley 22 and fixedly connected to the trolley 5 on one side; a guide rail 24 is also installed on the base 1, and a slider 25 slidably connected to the guide rail 24 is installed on the trolley 5; when the trolley 5 moves during the experiment, the motor 21 drives the synchronous pulley 22 to rotate, the synchronous pulley 22 drives the synchronous belt 23 to move, and the synchronous belt 23 drives the trolley 5 to move along the guide rail 24.

[0028] In one embodiment, it also includes a ruler 11 installed on the base 1 and a cursor 12 installed on the trolley 5; it also includes a camera 13 installed on the trolley 5 for photographing the cursor 12 and the ruler 11; by installing the camera 13 on the trolley 5, the cursor 12 and the ruler 11 are photographed through the camera 13, and the photographed image data can be uploaded to the control terminal, so that the operator can observe the position of the trolley 5 in real time through the camera 13 when conducting experiments remotely.

[0029] In one embodiment, it also includes a mounting tube 14 mounted on the base 1 and a receiving line support rod 15 mounted in the mounting tube 14, and a hanging wire clamp 16 is installed on the receiving line support rod 15; when conducting direct Doppler effect and sound speed measurement experiments, the receiving transducer 6 is installed on the trolley 5, and the receiving line support rod 15 is inserted into the mounting tube 14 in the middle of the base 1, and the wire of the receiving transducer 6 is clamped on the hanging wire clamp 16 to avoid interfering with the moving trolley 5.

[0030] In one embodiment, it also includes a travel switch 17 installed on the base 1 and a travel block 18 installed on the trolley 5 and corresponding to the travel switch 17; through the setting of the travel switch 17 and the travel block 18, the maximum travel on the left and right sides of the trolley 5 when moving is limited.

[0031] In one embodiment, it also includes a light-blocking plate 19 arranged on the trolley 5 corresponding to the position-limiting protection photoelectric gate 3 and the speed-measuring photoelectric gate 31; through the setting of the light-blocking plate 19, it is used in conjunction with the position-limiting protection photoelectric gate 3 and the speed-measuring photoelectric gate 31 to detect the position of the trolley 5.

[0032] In one embodiment, an angle ruler 8 is further included and arranged on the connecting seat 43; through the arrangement of the angle ruler 8, it can be used for angular position calibration when installing the transmitting transducer 10, the receiving transducer 6 and the reflecting plate 7.

[0033] In one embodiment, it also includes a partition plate 9 installed on the base 1; the partition plate 9 is used to separate the transmitting transducer 10 and the receiving transducer 6 when conducting a reflection experiment; the reflecting plate 7 is set at 90 degrees.

[0034] When the utility model is in use:

[0035] When conducting a direct Doppler effect and sound velocity measurement experiment, first install the receiving transducer 6 on the base 4 on the trolley 5. During installation, first install the connecting seat 43 on the base 4, then rotate the positioning screw 44 until one end of the positioning screw 44 is inserted into the annular groove 42, and then rotate the connecting seat 43 according to the angle position until the angle position adjustment is completed. Continue to rotate the positioning screw 44 until the positioning screw 44 presses against the positioning column 41 to complete the installation of the receiving transmitter, then insert the receiving line support rod 15 into the installation tube 14 in the middle of the base 1, and then clamp the receiving transducer 6 on the hanging line clamp 16 to conduct the direct Doppler effect and sound velocity measurement experiment;

[0036] When conducting reflection Doppler effect and sound speed measurement experiments, first remove the wire on the receiving transducer 6 from the wire clip 16, then remove the receiving transducer 6 and the connecting seat 43 connected thereto from the trolley 5, and install them on the base 4 arranged parallel to the transmitting transducer 10, and adjust its angular position in the same way as above and lock it, then install the connecting seat 43 with the reflecting plate 7 installed on the base 4 of the trolley 5 in the same way, then adjust the angle of the reflecting plate 7, and tighten the positioning screw 44 after the adjustment is completed; then remove the receiving wire support rod 15 installed in the middle of the base 1 and install it in the installation tube 14 on one side of the base 1, and then the reflection Doppler effect and sound speed measurement experiments can be carried out.

[0037] The protection scope of the present utility model is not limited to the above embodiments and their variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment all fall within the protection scope of the present utility model.

Claims

1. A digitally controlled Doppler effect and sound velocity experiment instrument, comprising a base (1), a driving mechanism (2) mounted on the base (1), a position limiting protection photoelectric gate (3) and a speed measuring photoelectric gate (31) mounted on the base (1), a base (4) mounted on the base (1), a transmitting transducer (10) mounted on the base (4), and a trolley (5) movably mounted on the base (1), wherein the trolley (5) is also mounted with the base (4); wherein the trolley (5) is characterized in that It also includes a disassembly and assembly structure arranged on the base (4), the disassembly and assembly structure comprising a positioning column (41) arranged on the base (4), a ring groove (42) arranged on the positioning column (41), a connecting seat (43) movably mounted on the base (4), and a positioning screw (44) movably mounted on the connecting seat (43); the transmitting transducer (10) is mounted on the connecting seat (43), and the connecting seat (43) can also be mounted with a receiving transducer (6) and a reflecting plate (7).

2. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 1, characterized in that: The driving mechanism (2) comprises a motor (21) mounted on a base (1), a synchronous pulley (22) mounted on the motor (21) and a base (4) for mounting a transmitting transducer (10), and a synchronous belt (23) mounted on the synchronous pulley (22) and fixedly connected to the trolley (5) on one side; a guide rail (24) is also mounted on the base (1), and a slider (25) slidably connected to the guide rail (24) is mounted on the trolley (5).

3. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 2, characterized in that: It also includes a scale (11) mounted on the base (1) and a cursor (12) mounted on the trolley (5).

4. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 3, characterized in that: It also includes a camera (13) installed on the trolley (5) for photographing the cursor (12) and the ruler (11).

5. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 1, characterized in that: It also includes a mounting tube (14) mounted on the base (1) and a receiving line support rod (15) mounted in the mounting tube (14), wherein a wire hanging clip (16) is mounted on the receiving line support rod (15).

6. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 1, characterized in that: It also includes a travel switch (17) mounted on the base (1) and a travel bumper (18) mounted on the trolley (5) and corresponding to the travel switch (17).

7. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 1, characterized in that: It also includes a light blocking plate (19) arranged on the trolley (5) and corresponding to the position-limiting protection photoelectric door (3) and the speed-measuring photoelectric door (31).

8. The digitally controlled Doppler effect and sound velocity experiment instrument according to claim 1, characterized in that: It also includes an angle ruler (8) arranged on the connecting seat (43).

9. A digitally controlled Doppler effect and sound velocity experiment instrument according to claim 1, characterized in that: It also includes a partition plate (9) mounted on the base (1); the reflection plate (7) is arranged at 90 degrees.

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