JP2014027622A - Measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring instrument capable of selectively measuring a vibration amount where the feature of vibration transmission to an ear of a human body is weighted and a vibration amount where the feature of vibration transmission is not weighted, and also correctly evaluating an electronic apparatus having a vibrator.SOLUTION: A measuring instrument 10 is the instrument for evaluating an electronic apparatus 100 that allows a user to hear sound by vibration transmission by putting a vibrator 102 held in a housing 101 against an ear of a human body. The measuring instrument includes: an ear shape part 50 supported to be removable with respect to a base 30 and simulating an ear of a human body; and a vibration detection unit 55 for detecting the vibration of the vibrator 102. A vibration detection unit 55 is arranged in a circumferential part 52 of an artificial external auditory canal 53 formed in the ear shape part 50 to thereby detect the vibration of the vibrator 102 through the ear shape part 50 when the ear shape part 50 is being supported by the base 30.

Description

  The present invention relates to a measuring apparatus for evaluating an electronic device that transmits a sound based on vibration of a vibrating body to a user by pressing the vibrating body held in the housing against a human ear.

  Patent Document 1 describes an electronic device such as a mobile phone that transmits air conduction sound and bone conduction sound to a user (user). According to Patent Document 1, air conduction sound is sound transmitted to the auditory nerve of a user by vibration of air that is caused by vibration of an object being transmitted to the eardrum through the external auditory canal. Have been described. Patent Document 1 describes that bone conduction sound is sound transmitted to the user's auditory nerve through a part of the user's body (for example, cartilage of the outer ear) that contacts the vibrating object. ing.

  In the telephone set described in Patent Document 1, it is described that a short plate-like vibrating body made of a piezoelectric bimorph and a flexible material is attached to the outer surface of a housing via an elastic member. Further, in Patent Document 1, when a voltage is applied to the piezoelectric bimorph of the vibrating body, the vibrating body vibrates due to the expansion and contraction of the piezoelectric material in the longitudinal direction, and the user contacts the vibrating body with the auricle. It is described that air conduction sound and bone conduction sound are transmitted to the user.

JP 2005-348193 A

  By the way, unlike the telephone described in the above-mentioned Patent Document 1, the inventors vibrate air conduction sound generated by vibrating a panel such as a display panel or a protection panel arranged on the surface of the mobile phone. We are developing mobile phones that transmit sound using vibration sound, which is the sound component of vibration transmission that is transmitted when the panel is placed on the human ear. In order to appropriately evaluate an electronic device that transmits some sound by vibration, such as a telephone as disclosed in Patent Document 1 and a mobile phone that the inventors have developed, the human body is affected by vibration of the vibrating body. I have come to realize that it is preferable to measure how close the sound pressure and vibration amount are to the human body as much as possible. In general, the following two measuring methods are known as methods for measuring the vibration amount.

  The first measurement method is to measure a vibration amount as a voltage by pressing a vibrating body to be measured against an artificial mastoid for measuring a bone-conducting vibrator that mechanically simulates a milk projecting part behind an ear. . In the second measurement method, for example, a vibration pickup such as a piezoelectric acceleration pickup is pressed against a vibration body to be measured, and the amount of vibration is measured as a voltage.

  However, the measurement voltage obtained by the first measurement method is a voltage in which the characteristics of the human body when the vibrating body is pressed against the milk projecting part behind the human ear are mechanically weighted. The characteristic of vibration transmission when is pressed against the human ear is not a weighted voltage. The measurement voltage obtained by the second measurement method is obtained by directly measuring the vibration amount of the vibrating body from the vibrating object. Similarly, the characteristics of vibration transmission to the human ear are weighted. Not the voltage. Therefore, even if the vibration amount of the vibrating body is measured by the conventional measurement method, the vibration amount transmitted from the electronic device to the human body cannot be correctly evaluated.

  Further, according to the study by the inventors, in order to more appropriately evaluate an electronic device having a vibrating body, a measured value obtained by weighting the vibration amount of the vibrating body by weighting the characteristics of vibration transmission to the human ear and It is also assumed that it is necessary to confirm the relevance of the two by comparing with the measurement value in which the characteristic of vibration transmission to the human ear is not weighted as in the conventional measurement method.

  The present invention has been made in view of the above-described viewpoints. The vibration amount in which the vibration transmission feature is weighted to each part around the human ear, particularly the ear cartilage, and the vibration amount in which the vibration transmission feature is not weighted. It is an object of the present invention to provide a measuring apparatus that can selectively measure the above and can correctly evaluate an electronic device having a vibrator.

An invention of a measuring apparatus according to the present invention that achieves the above object is a measuring apparatus for evaluating an electronic device that presses a vibrating body held in a housing against a human ear and transmits sound to a user by vibration transmission. And
An ear mold that imitates the ears of a human body supported detachably with respect to the base, and a vibration detection unit that detects the vibration of the vibrating body,
When the ear mold part is supported by the base, the vibration detection unit has a periphery of the artificial external auditory canal formed in the ear mold part so that the vibration of the vibrating body can be detected through the ear mold part. Placed in the section.

  The ear mold part may be detachable from the vibration detection part.

The vibration detection unit includes a first vibration detection unit attached to the ear mold unit, and a second vibration detection unit separated from the ear mold unit,
The first vibration detection unit or the second vibration detection unit may be selectively held on the base in accordance with the attachment or detachment of the ear mold part with respect to the base.

  With the ear mold part removed from the base, the vibration detection sensitivity of the vibration body by the vibration detection part may be adjusted to the mechanical impedance level of the artificial mastoid compliant with IEC60318-6.

The ear mold unit includes an ear model and an artificial external ear canal unit coupled to the ear model,
The artificial ear canal may be formed in the artificial ear canal portion.

  The artificial external auditory canal may have a length of 20 mm to 40 mm.

  You may further provide the holding | maintenance part holding the said electronic device.

  The holding unit may include a support unit that supports the electronic device in at least two places so that a person presses the electronic device against his / her ear.

  The holding unit may be movable and adjustable in a direction in which the electronic device is pressed against the ear mold unit or the vibration detection unit.

  The holding unit may be adjustable to rotate in a direction in which the electronic device is pressed against the ear-shaped unit or the vibration detection unit.

  The holding unit may be capable of adjusting a pressing force of the vibrating body in a range of 0N to 10N with respect to the ear-shaped unit or the vibration detecting unit.

  The holding unit may be capable of adjusting a pressing force of the vibrating body with respect to the ear-shaped unit or the vibration detecting unit in a range of 3N to 8N.

  The holding unit moves the electronic device in the vertical direction of the electronic device with respect to the ear-shaped portion or the vibration detecting unit so that the contact posture of the electronic device with respect to the ear-shaped portion or the vibration detecting unit can be changed. It may be adjustable.

  The contact posture may include a posture in which the electronic device is brought into contact with the ear mold unit or the vibration detection unit so that the vibrating body covers the ear mold unit or the vibration detection unit.

  The contact posture may include a posture in which the electronic device is brought into contact with the ear mold part or the vibration detection unit so that a part of the vibrating body is in contact with the ear mold part or the vibration detection unit.

  The ear mold portion may be made of a material conforming to IEC60318-7.

  The vibration detection unit may include a plurality of vibration detection elements arranged in a peripheral part of the artificial external ear canal.

  The vibration detection unit may include two arc-shaped vibration detection elements arranged so as to surround a peripheral part of the artificial external ear canal.

  The vibration detection unit may include a ring-shaped vibration detection element disposed so as to surround a peripheral part of the artificial external ear canal.

  You may further provide the sound pressure measurement part for measuring the sound pressure by the vibration of the said vibrating body.

  The sound pressure measurement unit may be arranged so as to be able to measure the sound pressure of the sound propagated through the artificial external ear canal when the ear mold unit is supported by the base.

  The ear mold part may be detachable from the sound pressure measuring part.

The sound pressure measurement unit includes a first sound pressure measurement unit attached to the ear mold unit, and a second sound pressure measurement unit separated from the ear mold unit,
The first sound pressure measurement unit or the second sound pressure measurement unit may be selectively held on the base in accordance with the attachment or detachment of the ear mold part with respect to the base.

  The sound pressure measurement unit may include a microphone held by a tube member.

  According to the present invention, it is possible to selectively measure the vibration amount weighted with the characteristic of vibration transmission to the ear of the human body and the vibration amount unweighted with the characteristic of vibration transmission, and correctly evaluate the electronic device having the vibration body. Is possible.

It is a figure which shows schematic structure of the measuring apparatus which concerns on 1st Embodiment of this invention. It is a top view which shows an example of the electronic device of a measuring object. FIG. 2 is a partial detail view of the measuring apparatus of FIG. 1. It is a figure which shows schematic structure at the time of the direct measurement mode by the measuring apparatus of FIG. It is a figure which shows an example of the measurement result of the indirect measurement mode by the measuring apparatus of FIG. It is a figure which shows an example of the measurement result of the direct measurement mode by the measuring apparatus of FIG. It is a figure which shows schematic structure of the measuring apparatus which concerns on 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a schematic configuration of a measuring apparatus according to the first embodiment of the present invention. The measuring apparatus 10 according to the present embodiment includes an electronic device mounting unit 20 and a measuring unit 200. The electronic device mounting unit 20 includes an ear-shaped unit 50 that is detachably supported by the base 30 and a holding unit 70 that holds the electronic device 100 to be measured. In the following description, the electronic device 100 is a mobile phone such as a smartphone having a rectangular panel 102 larger than a human ear on the surface of a rectangular casing 101 as shown in a plan view in FIG. Assume that the panel 102 vibrates as a vibrating body. First, the ear mold 50 will be described.

  The ear mold part 50 imitates the human ear and includes an ear model 51 and an artificial external ear canal part 52 coupled to the ear model 51. The artificial external auditory canal portion 52 has a size that covers the ear model 51, and an artificial external ear canal 53 is formed at the center. The ear mold part 50 is detachably supported by the base 30 via a support member 54 at the peripheral part of the artificial external ear canal part 52.

  The ear mold part 50 is made of, for example, a material similar to the material of an average ear model used for, for example, HATS (Head And Torso Simulator) of a human body model or KEMAR (a name of an electronic mannequin for acoustic research of Knowles). It consists of the material based on IEC60318-7. This material can be formed of a material such as rubber having a hardness of 35 to 55, for example. The rubber hardness may be measured in accordance with, for example, international rubber hardness (IRHD / M method) compliant with JIS K 6253 or ISO 48. Moreover, as a hardness measuring apparatus, the fully automatic type IRHD * M method micro size international rubber hardness tester GS680 by Teclock Co., Ltd. is used suitably. In consideration of the variation in the hardness of the ear depending on the age, the ear mold portion 50 may be prepared by roughly preparing two to three types of different hardness, and replacing them.

  The thickness of the artificial external auditory canal 52, that is, the length of the artificial external auditory canal 53 corresponds to the length to the human eardrum (cochlea), and is appropriately set within a range of 20 mm to 40 mm, for example. In the present embodiment, the length of the artificial external ear canal 53 is approximately 30 mm.

  A vibration detection unit 55 is detachably disposed in the ear mold unit 50 so as to be positioned at the periphery of the opening of the artificial external ear canal 53 on the end surface opposite to the ear model 51 side of the artificial external ear canal unit 52. The vibration detection element 56 is connected to the measurement unit 200. The vibration detection unit 55 includes a vibration detection element 56 including a vibration pickup such as a piezoelectric acceleration pickup. FIG. 3A is a plan view of the ear mold portion 50 as viewed from the base 10 side. Although FIG. 3A illustrates the case where the ring-shaped vibration detection element 56 is disposed so as to surround the periphery of the opening of the artificial external ear canal 53, a plurality of vibration detection elements 56 may be provided. When a plurality of vibration detection elements 56 are arranged, they may be arranged at appropriate intervals around the artificial ear canal 53, or two arc-shaped vibration detections surrounding the opening periphery of the artificial ear canal 53. An element may be arranged. In FIG. 3A, the artificial external auditory canal portion 52 has a rectangular shape, but the artificial external auditory canal portion 52 may have an arbitrary shape.

  Furthermore, a sound pressure measuring unit 60 is detachably disposed on the ear mold unit 50. . The sound pressure measurement unit 60 is connected to the measurement unit 200. The sound pressure measuring unit 60 is inserted and held in the tube member 61 supported by the opening of the ring-shaped vibration detecting element 56, as shown in the cross-sectional view along the line bb in FIG. A known microphone 62 such as a condenser microphone is provided. As will be described later, when the microphone 62 detects the sound caused by the vibration of the panel 102 by removing the ear mold portion 50 from the base 30, the microphone 62 does not contact the panel 102 and detect the vibration of the panel 102 as noise. The sound pressure detection surface is arranged at a predetermined distance d from the end surface of the artificial external auditory canal portion 52 in the state of being attached to the ear mold portion 50. Here, the predetermined distance d is set so that, for example, the resonance frequency in the space of the distance d is outside the measurement frequency range of the panel 102 (for example, 10 kHz or more).

  Next, the holding unit 70 will be described. In the case where the electronic device 100 is a mobile phone having a rectangular shape in a plan view such as a smartphone, when a person tries to hold the mobile phone with one hand and press it against his / her ear, the both sides of the mobile phone are usually held by hands. Will be supported by. Further, the pressing force and contact posture of the mobile phone against the ear vary depending on the person (user) or fluctuates during use. In the present embodiment, electronic device 100 is held by imitating such a usage mode of a mobile phone.

  Therefore, the holding part 70 includes support parts 71 that support both side parts of the electronic device 100. The support portion 71 is attached to one end portion of the arm portion 72 so as to be rotatable and adjustable around an axis y1 parallel to the y axis in a direction in which the electronic device 100 is pressed against the ear mold portion 50. The other end of the arm portion 72 is coupled to a movement adjusting portion 73 provided on the base 30. The movement adjusting unit 73 moves the arm unit 72 in the direction parallel to the x axis orthogonal to the y axis, the vertical direction x1 of the electronic device 100 supported by the support unit 71, and the z axis orthogonal to the y axis and the x axis. In a direction parallel to the direction z1 in which the electronic device 100 is pressed against the ear mold portion 50.

  As a result, the electronic device 100 supported by the support portion 71 adjusts the support portion 71 about the axis y1 or adjusts the movement of the arm portion 72 in the z1 direction. 102) is pressed against the ear mold 50. In the present embodiment, the pressing force is adjusted in the range of 0N to 10N, preferably in the range of 3N to 8N.

  Here, the range of 0N to 10N is for the purpose of enabling measurement in a sufficiently wide range than the pressing force assumed when a person presses an electronic device against his / her ear to use a telephone call or the like. Yes. In the case of 0N, for example, not only when the ear mold part 50 is in contact but not pressed, it can be held away from the ear mold part 50 by 1 cm so that measurement can be performed at each separation distance. It may be. Thereby, the degree of attenuation due to the distance of the airway sound can be measured by the microphone 62, and the convenience as a measuring apparatus is improved. In addition, the range of 3N to 8N usually assumes an average force range that a normal hearing person presses against an ear when making a call using a conventional speaker. Although there may be differences depending on race and gender, in general, in electronic devices such as smartphones and conventional mobile phones equipped with conventional speakers, vibration and airway sounds are usually generated with a pressing force that is pressed by the user. It is preferable that it can be measured.

  Further, by adjusting the movement of the arm portion 72 in the x1 direction, the contact posture of the electronic device 100 with respect to the ear mold portion 50, for example, the posture in which the panel 102 covers almost the entire ear mold portion 50, or FIG. Thus, the panel 102 is adjusted to a posture that covers a part of the ear mold portion 50. The arm portion 72 is configured to be movable and adjustable in a direction parallel to the y-axis, or is configured to be rotatable and adjustable around an axis parallel to the x-axis and the z-axis, so that the ear-shaped portion 50 can be adjusted. Thus, the electronic device 100 may be configured to be adjustable to various contact postures.

  As described above, in the measurement apparatus 10 according to the present embodiment, the vibration detection unit 55 and the sound pressure measurement unit 60 are integrated and can be attached to and detached from the ear mold unit 50 relatively. Therefore, as shown in FIG. 1, the ear mold 50, the vibration detector 55, and the sound pressure measuring unit 60 are coupled to each other, and the combined body is supported on the base 30 via the support member 54. Sound based on the vibration of the panel 102 can be measured through the mold part 50.

  That is, in the indirect measurement mode via the ear mold unit 50 in FIG. 1, when the panel 102 is pressed against the ear mold unit 50 and vibrated by the measurement unit 200 based on the output of the vibration detection unit 55, the ear canal unit 52. It is possible to detect the amount of vibration transmitted through. As a result, the vibration amount of the panel 102 directly shakes the inner ear, and the vibration amount corresponding to the bone conduction component to be heard without passing through the eardrum, that is, the vibration amount weighted by the characteristic of vibration transmission to the human ear is detected. At the same time, based on the output of the sound pressure measurement unit 60, the measurement unit 200 vibrates the air due to the vibration of the panel 102, and the sound pressure corresponding to the air conduction component heard directly through the eardrum, and the panel 102. The sound pressure corresponding to the air conduction component that listens to the sound generated in the ear itself through the eardrum due to the vibration of the ear canal, that is, the sound pressure weighted by the characteristic of sound pressure transmission to the human ear is measured. .

  Further, as shown in FIG. 4, the ear mold part 50 is detached from the vibration detection part 55 and the sound pressure measurement part 60, and the vibration detection part 55 and the sound pressure measurement part 60 are supported on the base 30 via the support member 57. By doing so, the sound based on the vibration of the panel 102 can be directly measured without going through the ear mold 50. That is, in the direct measurement mode in which the ear-shaped part 50 of FIG. 4 is removed, the vibration when the measurement unit 200 directly vibrates the panel 102 against the vibration detection unit 55 based on the output of the vibration detection unit 55. The amount can be detected. Thereby, the vibration amount of the panel 102 in which the characteristic of vibration transmission to the human ear is not weighted is detected. At the same time, based on the output of the sound pressure measurement unit 60, the measurement unit 200 measures the sound pressure due to the vibration of the panel 102 in which the feature of sound pressure transmission to the human ear is not weighted.

  In the direct measurement mode shown in FIG. 4, an adhesive sheet or the like may be interposed between the panel 102 and the vibration detection unit 55 so that the vibration of the panel 102 is reliably transmitted to the vibration detection unit 55. Further, when the panel 102 vibrates most, for example, when the panel 102 is vibrated by a piezoelectric element, the panel portion where the piezoelectric element is located is pressed against the vibration detecting unit 55. In the direct measurement mode shown in FIG. 4, in the measurement unit 200, the vibration detection sensitivity of the vibration detection unit 55 is adjusted to the mechanical impedance level of the artificial mastoid in accordance with IEC60318-6, and the back of the ear of the human body is adjusted. You may detect the vibration amount by which the characteristic of the human body when the panel 102 was pressed against the milky-projection part was weighted.

  5 and 6 are diagrams showing examples of measurement results obtained by the measurement apparatus 10 according to the present embodiment. FIG. 5 shows the measurement results in the indirect measurement mode of FIG. 1, and FIG. 6 shows the direct measurement mode of FIG. The measurement result by is shown. 5 and 6, the horizontal axis indicates the acoustic frequency (Hz), and the vertical axis indicates the measurement voltage (dBV). In FIG. 5, the thick line indicates the vibration level, the thin line indicates the sound pressure level, and the broken line indicates the audibility level obtained by combining the vibration level and the sound pressure level. In FIG. 6, the thick line indicates the vibration level by direct measurement, and the thin line indicates the vibration level by the impedance correction mastoid method measured by adjusting the vibration detection sensitivity of the vibration detection unit 55 to the mechanical impedance level of the artificial mastoid. This corresponds to the vibration level by the conventional artificial mastoid method.

  As is apparent from FIGS. 5 and 6, according to the measurement apparatus 10 according to the present embodiment, the vibration level measured in the indirect measurement mode is an impedance equivalent to the conventional artificial mastoid method measured in the direct measurement mode. Compared with the corrected mastoid method, it is higher than the measurement level by the impedance corrected mastoid method. Further, the vibration level measured in the indirect measurement mode is smaller than the vibration level in the direct measurement mode as compared with the vibration level in the direct measurement mode. That is, the vibration level measured in the indirect measurement mode is a weighted characteristic of vibration transmission of the human ear.

  As described above, according to the measurement apparatus 10 according to the present embodiment, the vibration level in the indirect measurement mode in which the characteristics of vibration transmission to the human ear are weighted, and the vibration to the human ear as in the conventional measurement method. It is possible to selectively measure the vibration level in the direct measurement mode in which the transmission characteristics are not weighted. Therefore, the electronic device 100 can be more correctly evaluated by confirming the relevance by comparing the vibration levels of the two. In the indirect measurement mode, the sound pressure through the artificial external auditory canal 53 can be measured simultaneously with the vibration level, whereby the vibration level corresponding to the vibration transmission amount to the human ear and the sound pressure level corresponding to the air conduction sound can be obtained. Therefore, the electronic device 100 can be evaluated in more detail. Furthermore, since the pressing force with respect to the ear part 50 and the vibration detection unit 55 of the electronic device 100 can be varied, and the contact posture can also be varied, the electronic device 100 can be evaluated in various modes.

(Second Embodiment)
FIGS. 7A and 7B are diagrams showing a schematic configuration of a measuring apparatus according to the second embodiment of the present invention. In the measurement apparatus 110 according to the present embodiment, a measurement head unit 41 shown in FIG. 7A and a measurement head unit 42 shown in FIG. is there. The measurement head unit 41 illustrated in FIG. 7A includes the ear mold unit 50 including the ear model 51 and the artificial external ear canal unit 52 illustrated in FIG. 1, the vibration detection unit 55 including the vibration detection element 56, and the microphone 62. A sound pressure measurement unit 60, a tube member 61, and a support member 54 are provided. The ear detection unit 50 is coupled to the vibration detection unit 55 and the sound pressure measurement unit 60 in the same arrangement relationship as in FIG. The measurement head unit 41 is detachably attached to the base 30 at the other end of the support member 54.

  7B includes a holding member 63, a vibration detection unit 65 having a ring-shaped vibration detection element 64 formed of a vibration pickup such as a piezoelectric acceleration pickup, and a microphone such as a capacitor microphone. 66, a sound pressure measuring unit 67, a tube member 68, and a support member 69. The vibration detection element 64 is held on the inner peripheral surface of the opening formed at the center of the holding member 63 with the detection surface being substantially coincident with the upper surface of the holding member 63. The microphone 66 is inserted and held in the tube member 68 supported by the opening of the ring-shaped vibration detecting element 56 at the opening of the holding member 63. Note that the microphone 66 is arranged such that the sound pressure detection surface is separated from the upper surface of the vibration detection element 64 by a predetermined distance d, similarly to the microphone 62 of the measurement head unit 41. In addition, one end portion of the support member 69 is coupled to the peripheral portion of the holding member 63. The measurement head unit 42 is detachably attached to the base 30 at the other end of the support member 69.

  That is, in the measuring apparatus 110 according to the present embodiment, the ear unit 50 is attached to the base 30 by mounting the measuring head part 41 and the measuring head part 42 so as to be interchangeable with respect to the base 30. It is designed to be attached and detached. In the present embodiment, the vibration detection unit 55 corresponds to the first vibration detection unit, the sound pressure measurement unit 60 corresponds to the first sound pressure measurement unit, and the vibration detection unit 63 corresponds to the second vibration detection unit. The sound pressure measuring unit 65 corresponds to a second sound pressure measuring unit. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to components having the same functions as those of the first embodiment, and description thereof will be omitted.

  According to measurement apparatus 110 according to the present embodiment, panel 102 is pressed against ear mold portion 50 and vibrated in the indirect measurement mode similar to FIG. 1 by attaching measurement head portion 41 to base 30. At this time, the measurement unit 200 detects the vibration amount weighted with the characteristic of vibration transmission to the human ear based on the output of the vibration detection unit 55. At the same time, based on the output of the sound pressure measuring unit 60, the sound pressure weighted with the feature of sound pressure transmission to the human ear is measured.

  Further, by attaching the measurement head portion 42 to the base 30, when the panel 102 is pressed against the ear mold portion 50 and vibrated in the direct measurement mode similar to FIG. Based on the output of 63, the vibration amount of the panel 102 in which the characteristic of vibration transmission to the human ear is not weighted is detected. At the same time, based on the output of the sound pressure measuring unit 65, the sound pressure due to the vibration of the panel 102 in which the feature of sound pressure transmission to the human ear is not weighted is measured.

  Therefore, the measurement apparatus 110 according to the present embodiment can obtain the same effects as those of the measurement apparatus 10 according to the first embodiment. In particular, in the present embodiment, the measurement head unit 41 and the measurement head unit 42 are exchanged with respect to the base 30, and the indirect measurement mode and the direct measurement mode are switched. Therefore, the measurement mode can be easily and reliably switched. There are advantages you can do.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, in the above-described embodiment, it is assumed that the electronic device 100 to be measured is a mobile phone such as a smartphone and the panel 102 vibrates as a vibrating body. An electronic device in which a panel in contact with the ear vibrates can be similarly evaluated. Moreover, not only a mobile phone but other piezoelectric receivers can be evaluated in the same manner.

DESCRIPTION OF SYMBOLS 10 Measuring apparatus 20 Electronic equipment mounting part 30 Base 41,42 Measurement head part 50 Ear mold part 51 Ear model 52 Artificial ear canal part 53 Artificial ear canal 54,57,69 Support member 55,65 Vibration detection part 56,64 Vibration detection element 60, 67 Sound pressure measuring unit 61, 68 Tube member 62, 66 Microphone 63 Holding member 70 Holding unit 71 Supporting unit 72 Arm unit 73 Movement adjustment unit 100 Electronic device 101 Housing 102 Panel (vibrating body)
110 Measuring Device 200 Measuring Unit

Claims (24)

A measuring device for evaluating an electronic device that presses a vibrating body held in a housing against a human ear and transmits sound to a user by vibration transmission,
An ear mold that imitates the ears of a human body supported detachably with respect to the base, and a vibration detection unit that detects the vibration of the vibrating body,
When the ear mold part is supported by the base, the vibration detection unit has a periphery of the artificial external auditory canal formed in the ear mold part so that the vibration of the vibrating body can be detected through the ear mold part. Measuring device arranged in the section.   The measurement apparatus according to claim 1, wherein the ear mold part is detachable from the vibration detection part. The vibration detection unit includes a first vibration detection unit attached to the ear mold unit, and a second vibration detection unit separated from the ear mold unit,
The measurement apparatus according to claim 1, wherein the first vibration detection unit or the second vibration detection unit is selectively supported by the base in accordance with attachment or detachment of the ear mold part with respect to the base.   The detection sensitivity of the vibration of the vibrating body by the vibration detection unit is adjusted to the mechanical impedance level of the artificial mastoid in accordance with IEC60318-6 with the ear mold part removed from the base. 4. The measuring device according to any one of items 1 to 3. The ear mold unit includes an ear model and an artificial external ear canal unit coupled to the ear model,
The measurement apparatus according to claim 1, wherein the artificial external auditory canal is formed in the artificial external auditory canal.   The measurement device according to claim 1, wherein the artificial external auditory canal has a length of 20 mm to 40 mm.   The measuring apparatus according to claim 1, further comprising a holding unit that holds the electronic device.   The measurement device according to claim 7, wherein the holding unit includes a support unit that supports the electronic device in at least two places so that a person presses the electronic device against his / her ear.   The measurement device according to claim 7 or 8, wherein the holding unit is movable and adjustable in a direction in which the electronic device is pressed against the ear mold unit or the vibration detection unit.   The measurement device according to claim 7 or 8, wherein the holding unit is capable of rotating and adjusting in a direction in which the electronic device is pressed against the ear-shaped unit or the vibration detection unit.   The measuring device according to claim 9 or 10, wherein the holding unit is capable of adjusting a pressing force of the vibrating body with respect to the ear mold unit or the vibration detection unit in a range of 0N to 10N.   The measuring device according to claim 9 or 10, wherein the holding unit is capable of adjusting a pressing force of the vibrating body with respect to the ear-shaped unit or the vibration detecting unit in a range of 3N to 8N.   The holding unit moves the electronic device in the vertical direction of the electronic device with respect to the ear-shaped portion or the vibration detecting unit so that the contact posture of the electronic device with respect to the ear-shaped portion or the vibration detecting unit can be changed. The measuring device according to claim 7, wherein the measuring device is adjustable.   The measurement according to claim 13, wherein the contact posture includes a posture in which the electronic device is brought into contact with the ear mold part or the vibration detection unit so that the vibrating body covers the ear mold part or the vibration detection unit. apparatus.   The contact posture includes a posture in which the electronic device is brought into contact with the ear mold part or the vibration detection unit so that a part of the vibrating body is in contact with the ear mold part or the vibration detection unit. The measuring device described in 1.   The measuring device according to any one of claims 1 to 15, wherein the ear mold part is made of a material compliant with IEC60318-7.   The measurement device according to any one of claims 1 to 16, wherein the vibration detection unit includes a plurality of vibration detection elements.   The measurement apparatus according to claim 1, wherein the vibration detection unit includes two arc-shaped vibration detection elements.   The measurement apparatus according to claim 1, wherein the vibration detection unit includes a ring-shaped vibration detection element.   The measurement apparatus according to any one of claims 1 to 19, further comprising a sound pressure measurement unit for measuring a sound pressure due to vibration of the vibrating body.   The sound pressure measurement unit is arranged so as to be able to measure a sound pressure of sound propagated through the artificial external ear canal when the ear mold unit is supported by the base. The measuring apparatus as described in any one.   The measuring device according to claim 20 or 21, wherein the ear mold part is detachable from the sound pressure measuring part. The sound pressure measurement unit includes a first sound pressure measurement unit attached to the ear mold unit, and a second sound pressure measurement unit separated from the ear mold unit,
The said 1st sound pressure measurement part or the said 2nd sound pressure measurement part is selectively supported by the said base according to attachment or detachment of the said ear | edge type part with respect to the said base. Measuring device. The measurement device according to any one of claims 20 to 23, wherein the sound pressure measurement unit includes a microphone held by a tube member.

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