CN110136560A - Functional device and experimental method of oblique cut-off bionic bat ear horn model - Google Patents

Abstract

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

Description

Functional device and experimental method of oblique cut-off bionic bat ear horn model

technical field

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

Background technique

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

The animal's pinna not only has the function of collecting external sound into the ear canal, but also has the functions of positioning, distinguishing front and rear sound sources, and spectrum modulation. The bat's pinna plays an important role in animal predation behavior and target detection. The outer ear of a bat is generally composed of the auricle, the tragus (or antitragus), and the ear canal. From the appearance, the pinna of bats usually has some particularly complex geometric shapes, such as ridges and groove structures.

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

Contents of the invention

The first aspect of the present disclosure provides a functional device of an obliquely truncated bionic bat ear horn model, which can change the shape parameters of the cone angle of the auricle, the angle of the section of the auricle, and the position of the ear canal through the movement of related devices, and improve the shape of the animal's outer ear. Bionic simulation and research on the analysis efficiency of the relationship between the shape parameters of the auricle and the directionality of the sound field and the accuracy of the analysis results.

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

A functional device of an obliquely truncated bionic bat-ear horn model, comprising:

control department;

Inclined truncated simulated auricle;

The auricle cone angle adjustment unit is used to receive the auricle cone angle adjustment command issued by the control unit, so as to realize the adjustment of the oblique truncation simulated auricle cone angle;

The auricle section angle adjustment unit is used to receive the auricle section angle adjustment instruction issued by the control section, so as to realize the adjustment of the angle of the oblique section simulated auricle section angle;

The simulated ear canal, one end of which 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 to receive the ear canal position adjustment command issued by the control part to realize the adjustment of the ear canal position. adjust.

The second aspect of the present disclosure provides an experimental method for a functional device of a diagonally truncated bionic bat-ear horn model.

An experimental method for a functional device of an obliquely truncated bionic bat-ear horn model, comprising:

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

The influence of different slice angles on the simulated sound field is recorded through the auricle slice angle adjustment unit;

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

The beneficial effects of the disclosure are:

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

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

Description of drawings

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

Fig. 1 is a schematic structural diagram of a functional device of a diagonally 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 obliquely sectioned 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 simulated auricle, 7-oblique section amplification plane plate, 8 -Constraint rod, 9-simulated ear canal, 10-mechanical arm, 11-fixed platform of mechanical arm.

Detailed ways

The present disclosure will be further described below in conjunction with 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 defined otherwise, 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 only for describing specific embodiments, 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, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

In this disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom" etc. refer to The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only a relative term determined for the convenience of describing the structural relationship between the components or elements of the present disclosure. Public restrictions.

In this disclosure, terms such as "fixed", "connected", and "connected" should be interpreted in a broad sense, which means that they can be fixedly connected, integrally connected or detachably connected; they can be connected directly or through an intermediate connection. The medium is indirectly connected. For relevant researchers or technicians 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, sonar systems usually do not use very complex antenna shapes, no matter whether the bionic principle is applied or not. 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 bat ear and improve the performance . In order to further study the role of the shape parameters of bat auricles, 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, section 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-mentioned problems in the background technology, the present disclosure provides a functional device of an obliquely truncated bionic bat-ear horn model.

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

As shown in Fig. 1 and Fig. 2, a kind of oblique section type bionic bat ear horn model functional device of the present embodiment comprises: control part, obliquely sectioned simulated auricle, auricle cone angle adjustment part, auricle section angle Adjustment part and simulated ear canal.

In a specific implementation, the control unit can be realized by using FPGA, PLC or other programmable logic devices, which can be selected by those skilled in the art according to the actual situation, and will not be described in detail here.

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

Table 1 Parameters of simulated auricle with oblique intercept

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, auricle section angle adjustment part and ear canal position adjustment part are all installed on the base 1 .

In a specific implementation, the auricle cone angle adjustment unit is used to receive the auricle cone angle adjustment command issued by the control unit, so as to realize the adjustment of the oblique truncation simulated auricle cone angle.

Specifically, the auricle cone angle adjustment part includes:

The first linear servo motor, the first linear servo motor is connected to the control unit 4, 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 with the hinge plate 5, and the hinge plate 5 is connected to the oblique section analog by at least two restraining rods 8. The auricles are 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 change of the angle of the restraining rod (like opening and closing an umbrella) so as to realize the adjustment of the cone angle.

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

Specifically, the auricle section angle adjustment part includes:

Two groups of the same parts, each group of parts 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, and the second displacement sensor 3 is enlarged with the oblique section of the obliquely truncated auricle The plane disk 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 command issued by the control part, Adjust the position of the ear canal.

Specifically, the ear canal position adjustment part includes:

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

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

The manipulator is a multi-degree-of-freedom manipulator.

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

This embodiment has compact structure, wide range of uses, and realistic simulation, which can meet a variety of experimental requirements. Through the movement of related devices, the angle of the cone of the auricle, the angle of the section of the auricle, and the shape parameters of the ear canal position can be changed to improve the bionic simulation of the outer ear of animals and To study the analysis efficiency and the accuracy of the analysis results of the relationship between the shape parameters of the auricle and the directionality of the sound field.

A kind of experimental method of the functional device of the oblique cut type bionic bat ear horn model of the present embodiment, comprising:

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

The influence of different slice angles on the simulated sound field is recorded through the auricle slice angle adjustment part;

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

This experimental device can be used to complete the exploration of the relationship between the shape parameters of the auricle 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 different slice angles on the simulated sound field is explored through the adjustment part of the angle of the auricle section, and the effect of the position of the ear canal on the simulated sound field is explored through the simulation of the ear canal. The influence of the sound field distribution can also change two or three of these three variables so as to increase the experimental data and facilitate future theoretical and practical 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 modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims (8)

1. A kind of oblique section type bionic bat ear horn model functional device, it is characterized in that, comprises: control department; Inclined truncated simulated auricle; The auricle cone angle adjustment unit is used to receive the auricle cone angle adjustment command issued by the control unit, so as to realize the adjustment of the oblique truncation simulated auricle cone angle; The auricle section angle adjustment unit is used to receive the auricle section angle adjustment instruction issued by the control section, so as to realize the adjustment of the angle of the oblique section simulated auricle section angle; The simulated ear canal, one end of which 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 to receive the ear canal position adjustment command issued by the control part to realize the adjustment of the ear canal position. adjust. 2. A kind of oblique section type bionic bat ear horn model functional device as claimed in claim 1, characterized in that, the auricle cone angle adjustment part, the auricle section angle adjustment part and the ear canal position adjustment part are all installed on the base. 3. A kind of oblique truncation bionic bat ear horn model functional device as claimed in claim 1, wherein said auricle cone angle adjustment part comprises: The first linear servo motor, the first linear servo motor is connected to the control unit, 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 The displacement signal of the output shaft of the servo motor is transmitted to the control part; the output shaft of the first linear servo motor is connected to the hinge plate, and the hinge plate is connected to the obliquely truncated simulated auricle through at least two restraint rods. 4. A kind of oblique section bionic bat ear horn model functional device as claimed in claim 2, characterized in that, said auricle section angle adjustment part comprises: Two groups of the same parts, each group of parts includes a second linear servo motor, a second displacement sensor is installed on the output shaft of the second linear servo motor, and the second displacement sensor is connected to the oblique section amplification plane disk of the oblique truncated auricle and fixed; the second displacement sensor is used to detect the displacement signal of the output shaft of the second linear servo motor and transmit it to the control part; the second linear servo motor is also connected to the control part. 5. A kind of oblique cut-off bionic bat ear horn model functional device as claimed in claim 1, characterized in that, said ear canal position adjustment part comprises: The mechanical arm is fixed on the fixed platform of the mechanical arm, the fixed platform of the mechanical arm is connected with the control part, and the mechanical arm is connected with the simulated ear canal. 6 . The functional device of a slanted bionic bat ear horn model as claimed in claim 5 , wherein the mechanical arm is a flexible mechanical arm controlled by a pneumatic rope. 7 . 7. A kind of oblique section bionic bat ear horn model functional device as claimed in claim 5, characterized in that, said mechanical arm is a multi-degree-of-freedom mechanical arm. 8. An experimental method of the oblique truncated bionic bat ear horn model functional device as described in any one of claims 1-7, it is characterized in that comprising: The influence of the change of the opening angle of the cone on the directional distribution of the sound field is recorded through the adjustment part of the cone angle of the auricle; The influence of different slice angles on the simulated sound field is recorded through the auricle slice angle adjustment part; The effect of ear canal position on the sound field distribution was recorded by simulating the ear canal.