CN110136560B - Oblique-cut bionic bat ear horn model functional device and experimental method - Google Patents

Abstract

The present disclosure provides an oblique-cut bionic bat ear horn model functional device and an experimental method. Among them, the oblique section bionic bat ear horn model function device includes: a control part; an oblique section to simulate the auricle; The oblique section simulates the adjustment of the cone angle of the auricle; the auricle section angle adjustment part is used to receive the auricle section angle adjustment instruction issued by the control section, and realizes the adjustment of the oblique section simulates the auricle section angle; the simulated ear canal, One end is connected to the slanted simulated auricle, and the other end is connected to the ear canal position adjustment part; the ear canal position adjustment part is used for receiving the ear canal position adjustment instruction issued by the control part to realize the adjustment of the ear canal position.

Description

Oblique-cut bionic bat ear horn model functional device and experimental method

technical field

The present disclosure belongs to the field of bionic simulation devices, and in particular relates to an oblique-cut bionic bat ear horn model functional device and an experimental method.

Background technique

The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

Animal auricle not only has the function of collecting foreign sound into the ear canal, but also has the functions of localization, distinguishing front and rear sound sources, and spectral modulation. Bat external auricle plays an important role in animal predation behavior and target detection. The outer ear of bats is generally composed of auricle, tragus (or anti-tragus), and ear canal. Physically, the pinna of bats usually has some particularly complex geometries, such as ridges and grooves.

The inventors found that the existing bat ear bionic device is imperfect and has a fixed structure. If the influence of different bat auricle shape parameters on the sound field directional distribution is analyzed accordingly, multiple different bat ear bionic devices need to be fabricated, which makes the operation process need to be repeated. Many times, the analysis efficiency is low.

SUMMARY OF THE INVENTION

The first aspect of the present disclosure provides a slanted bionic bat ear horn model functional device, which can change the shape parameters of the auricle cone angle, the auricle section angle and the position of the ear canal through the movement of related devices, so as to improve the external ear of animals. The analysis efficiency and the accuracy of the analysis results of bionic simulation and studying the relationship between the auricle shape parameters and the directionality of the sound field.

In order to achieve the above object, the present disclosure adopts the following technical solutions:

An oblique-cut bionic bat ear horn model functional device, comprising:

control department;

Oblique section to simulate auricle;

an auricle cone angle adjustment part, which is used for receiving an auricle cone angle adjustment instruction issued by the control part, and realizes the adjustment of the oblique truncated simulated auricle cone angle;

The auricle cut surface angle adjustment part is used for receiving the auricle cut surface angle adjustment instruction issued by the control part, and realizes the adjustment of the oblique cut simulated auricle cut surface angle;

One end of the simulated ear canal is connected to the slanted simulated pinna, and the other end is connected to the ear canal position adjustment part; the ear canal position adjustment part is used to receive the ear canal position adjustment instruction issued by the control part, so as to realize the adjustment of the ear canal position. adjust.

A second aspect of the present disclosure provides an experimental method for an oblique-cut bionic bat ear horn model functional device.

An experimental method for an oblique-cut bionic bat ear horn model functional device, comprising:

The influence of the change of the cone opening angle on the directional distribution of the sound field is recorded through the adjustment part of the cone angle of the auricle;

Record the effect of different slice angles on the simulated sound field through the auricle slice angle adjustment part;

The effect of the ear canal position on the sound field distribution is recorded by simulating the ear canal.

The beneficial effects of the present disclosure are:

(1) The present disclosure realizes the change of the auricle shape parameters so as to conduct research on the influence of different auricle shape parameters on the sound field directional distribution; realizes the precise adjustment of the auricle cone angle, the auricle section angle and the position of the ear canal, thereby To enrich the follow-up experiments;

(2) The present disclosure is compact in structure, widely used, and realistic in simulation, and can meet various experimental requirements. The shape parameters of the auricle cone angle, the auricle section angle, and the position of the ear canal can be changed by the movement of related devices, so as to improve the bionic simulation of the animal outer ear. As well as the analysis efficiency and the accuracy of the analysis results to study the relationship between the auricle shape parameters and the sound field directionality.

Description of drawings

The accompanying drawings that constitute a part of the present disclosure are used to provide further understanding of the present disclosure, and the exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure.

FIG. 1 is a schematic structural diagram of a functional device of an oblique-cut bionic bat ear horn model provided by an embodiment of the present disclosure.

FIG. 2 is an axonometric view of a functional device of an oblique-cut bionic bat ear horn model provided by an embodiment of the present disclosure.

Among them, 1-base, 2-second linear servo motor, 3-second displacement sensor, 4-control part, 5-hinge plate, 6-oblique section simulation auricle, 7-inclined section amplification plane plate, 8- -Restraining rod, 9-simulated ear canal, 10-manipulator arm, 11-manipulator arm fixed platform.

Detailed ways

The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

In this disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only a relational word determined for the convenience of describing the structural relationship of each component or element of the present disclosure, and does not specifically refer to any component or element in the present disclosure, and should not be construed as a reference to the present disclosure. public restrictions.

In the present disclosure, terms such as "fixed connection", "connected", "connected", etc. should be understood in a broad sense, indicating that it may be a fixed connection, an integral connection or a detachable connection; it may be directly connected, or through an intermediate connection. The medium is indirectly connected. For the relevant scientific research or technical personnel in the field, the specific meanings of the above terms in the present disclosure can be determined according to specific situations, and should not be construed as limitations on the present disclosure.

In practical applications, no matter whether the bionic principle is applied or not, the sonar system usually does not adopt a very complicated antenna shape. According to the above design principles, referring to the shape parameters of the bat's auricle, a slanted bat ear horn model with only the basic characteristics of the bat's auricle is designed by geometric methods, which can realize the main functions of the referenced bat's ear and improve the performance. . In order to further study the effect of bat auricle shape parameters, corresponding devices are urgently needed to complete the simulation of different bat auricle shape parameters. By controlling the movement of related devices, the cone angle, cut plane angle and ear canal position of the slanted bat horn model can be realized. To explore the influence of different auricle shape parameters on the directional distribution of the sound field and realize the corresponding simulation, analysis and research.

In order to solve the above problems in the background art, the present disclosure provides an oblique-cut bionic bat ear horn model functional device.

The technical solutions of the present disclosure are described in detail below in conjunction with the specific accompanying drawings:

As shown in FIG. 1 and FIG. 2 , an oblique section bionic bat ear horn model functional device of the present embodiment includes: a control part, an oblique section simulated auricle, an auricle cone angle adjustment part, and an auricle cut surface angle Conditioner and simulated ear canal.

In specific implementation, the control part may be implemented by using FPGA, PLC or other programmable logic devices, and those skilled in the art can make specific selections according to the actual situation, which will not be described in detail here.

The oblique-section simulated auricle can be made of plastic material with good toughness and shrinkage, and its parameters are shown in Table 1.

Table 1 The parameters of the oblique-cut simulated auricle

The simulated ear canal can be made of materials such as plastic or rubber.

It can be understood that those skilled in the art can specifically select the material for simulating the ear canal according to the actual situation.

As shown in FIG. 1 and FIG. 2 , the auricle cone angle adjustment part, the auricle cut surface angle adjustment part and the ear canal position adjustment part are all mounted on the base 1 .

In a specific implementation, the auricle cone angle adjustment part is configured to receive the auricle cone angle adjustment instruction issued by the control part, so as to realize the adjustment of the oblique truncated simulated auricle cone angle.

Specifically, the auricle cone angle adjustment part includes:

The first linear servo motor, the first linear servo motor is connected with the control part 4, and the output shaft of the first linear servo motor is provided with a first displacement sensor, and the first displacement sensor is used to detect the first linear servo motor. The displacement signal of the output shaft of the linear servo motor is transmitted to the control part 4; the output shaft of the first linear servo motor is connected to the hinge plate 5, and the hinge plate 5 is connected to the oblique section simulation through at least two restraining rods 8 The pinna is connected.

The control part 4 controls the output shaft direction of the first linear servo motor of the hinge plate 5 to move up and down so as to control the angle change of the restraint rod (like opening and closing an umbrella) to realize the adjustment of the cone angle.

In a specific implementation, the auricle cut surface angle adjustment part is used to receive the auricle cut surface angle adjustment instruction issued by the control part, so as to realize the adjustment of the oblique section simulated auricle cut surface angle;

Specifically, the auricle cut surface angle adjustment part includes:

Two sets of the same components, each set of components includes a second linear servo motor 2, a second displacement sensor 3 is installed on the output shaft of the second linear servo motor 2, the second displacement sensor 3 and the oblique section of the oblique truncated auricle are amplified The plane plate 7 is connected and fixed; the second displacement sensor 3 is used to detect the displacement signal of the output shaft of the second linear servo motor and transmit it to the control part 4 ; the second linear servo motor 2 is also connected to the control part 4 .

In a specific implementation, one end of the simulated ear canal 9 is connected to the slanted simulated auricle 6, and the other end is connected to the ear canal position adjustment part; the ear canal position adjustment part is used to receive the ear canal position adjustment instruction issued by the control part, Adjust the position of the ear canal.

Specifically, the ear canal position adjustment part includes:

The robotic arm 10 is fixed on the robotic arm fixing platform 11 , the robotic arm fixing platform 11 is connected with the control part 4 , and the robotic arm 10 is connected with the simulated ear canal 9 .

Wherein, the manipulator is a pneumatic rope-controlled flexible manipulator.

The robotic arm is a multi-degree-of-freedom robotic arm.

This embodiment realizes the change of the auricle shape parameters to study the influence of different auricle shape parameters on the directional distribution of the sound field; realizes the precise adjustment of the auricle cone angle, the auricle section angle and the position of the ear canal, so that the subsequent more experiments;

This embodiment has a compact structure, a wide range of uses, and a realistic simulation, which can meet a variety of experimental requirements. The shape parameters of the auricle cone angle, the auricle section angle, and the position of the ear canal can be changed by the movement of the related devices, so as to improve the bionic simulation of the animal's outer ear. The analysis efficiency and the accuracy of the analysis results were studied on the relationship between the auricle shape parameters and the sound field directivity.

An experimental method for an oblique-cut bionic bat ear horn model functional device of the present embodiment includes:

The influence of the change of the cone opening angle on the directional distribution of the sound field is recorded through the adjustment part of the cone angle of the auricle;

Record the effect of different slice angles on the simulated sound field through the auricle slice angle adjustment part;

The effect of the ear canal position on the sound field distribution is recorded by simulating the ear canal.

This experimental device can be used to explore the relationship between the auricle shape parameters and the sound field. The influence of the change of the cone opening angle on the directional distribution of the sound field is explored through the adjustment part of the cone angle of the auricle; The influence of sound field distribution can also change two or three of these three variables to increase experimental data for future theoretical and physical research.

The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included within the protection scope of the present disclosure.

Claims (8)

1. An oblique-section type bionic batear horn model function device is characterized by comprising:

a control unit;

simulating auricles in a truncated mode;

the auricle cone angle adjusting part is used for receiving an auricle cone angle adjusting instruction sent by the control part and realizing the adjustment of the truncated type simulated auricle cone angle;

the auricle section angle adjusting part is used for receiving an auricle section angle adjusting instruction sent by the control part and realizing the adjustment of the section angle of the truncated simulated auricle;

one end of the simulated auditory canal is connected with the truncated simulated auricle, and the other end of the simulated auditory canal is connected with the auditory canal position adjusting part; the ear canal position adjusting part is used for receiving an ear canal position adjusting instruction sent by the control part and realizing the adjustment of the ear canal position;

the auricle cone angle adjusting portion includes:

the first linear servo motor is connected with the control part, a first displacement sensor is arranged on an output shaft of the first linear servo motor, and the first displacement sensor is used for detecting a displacement signal of the output shaft of the first linear servo motor and transmitting the displacement signal to the control part;

the auricle tangent plane angle adjustment part includes:

and each group of identical components comprises a second linear servo motor, a second displacement sensor is mounted on an output shaft of the second linear servo motor, and the second displacement sensor is connected and fixed with the oblique section amplification plane disc of the oblique section auricle.

2. The oblique-section bionic bat-ear horn model functional device of claim 1, wherein the auricle cone angle adjusting part, the auricle section angle adjusting part and the ear canal position adjusting part are all installed on the base.

3. The oblique-section bionic bat-ear horn model functional device of claim 1, wherein the auricle cone angle adjusting part further comprises:

the output shaft of the first linear servo motor is connected with a hinge disc, and the hinge disc is connected with the truncated-cone-shaped simulated auricle through at least two constraint rods.

4. The oblique-section bionic bat-ear horn model function device as claimed in claim 1, wherein the auricle section angle adjusting part further comprises:

the second displacement sensor is used for detecting a displacement signal of the output shaft of the second linear servo motor and transmitting the displacement signal to the control part; and the second linear servo motor is also connected with the control part.

5. The oblique-section type bionic bat-ear horn model functional device of claim 1, wherein the ear canal position adjusting part comprises:

the mechanical arm is fixed on the mechanical arm fixing platform, the mechanical arm fixing platform is connected with the control part, and the mechanical arm is connected with the simulated auditory meatus.

6. The device as claimed in claim 5, wherein the robotic arm is a pneumatic rope-controlled flexible robotic arm.

7. The device as claimed in claim 5, wherein the robotic arm is a multi-degree of freedom robotic arm.

8. An experimental method of the truncated bionic batear horn model functional device as claimed in any one of claims 1-7, comprising:

recording the influence of the change of the cone opening angle on the directional distribution of the sound field through the adjusting part of the cone angle of the auricle;

recording the influence of different section angles on a simulated sound field through an auricle section angle adjusting part;

the effect of the ear canal position on the sound field distribution was recorded by simulating the ear canal.

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