WO2014036940A1 - 一种人耳检测方法和结构 - Google Patents

一种人耳检测方法和结构 Download PDF

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Publication number
WO2014036940A1
WO2014036940A1 PCT/CN2013/082926 CN2013082926W WO2014036940A1 WO 2014036940 A1 WO2014036940 A1 WO 2014036940A1 CN 2013082926 W CN2013082926 W CN 2013082926W WO 2014036940 A1 WO2014036940 A1 WO 2014036940A1
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Prior art keywords
metal
horn
human ear
detecting
capacitance
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PCT/CN2013/082926
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English (en)
French (fr)
Inventor
邵明保
余光洪
夏春水
李冠军
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歌尔声学股份有限公司
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Publication of WO2014036940A1 publication Critical patent/WO2014036940A1/zh

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements

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  • the invention relates to the technical field of human ear detection, and in particular to a human ear detection method and structure.
  • human ear detection is available in existing Bluetooth headsets, headphones, in-ear earphones, and 3D glasses. Detection) structure, which can realize the human ear detection function.
  • the so-called human ear detection function refers to the human ear detection structure to detect whether the human ear wears the earphone, thereby determining whether the motherboard has the function of turning on the bluetooth.
  • the human ear detecting structure in an acoustic product such as a headphone is mainly realized by the structure of the speaker itself, and the specific human ear detecting function is realized by selecting a speaker with a metal casing and connecting the wire.
  • One end of the connection is connected to the metal casing of the speaker, and the other end of the connection line is connected to the IO port of the capacitance detecting chip on the main board (PCBA board).
  • the metal casing of the speaker forms a touch electrode in the circuit when the human body contacts or When the touch electrode is close to the human body, the human body and the touch electrode form a human body sensing capacitance.
  • the IO port of the capacitor detection chip on the motherboard detects the change in the capacity of the metal casing of the speaker, and the motherboard turns on the Bluetooth.
  • the invention provides a human ear detecting method and structure to solve the problems of low sensitivity and poor consistency of the existing products with human ear detecting function.
  • the invention discloses a human ear detecting method, and the method comprises:
  • the metal shrapnel is connected to the capacitance detecting interface of the main board through a connecting line;
  • the main board detects a change in the capacitance through the capacitance detecting interface, and activates the corresponding function.
  • the method further includes: applying a sealing rubber sleeve on the horn to achieve sealing of the front and rear sound chambers of the horn.
  • the method further includes:
  • a gap of the elastic foot avoiding the metal dome is disposed on the sealing rubber sleeve.
  • the contacting the metal elastic piece with the metal outer casing of the horn includes contacting one or more elastic legs of the metal elastic piece with the metal outer casing of the horn.
  • the invention also discloses a human ear detecting structure, comprising: a horn, a metal dome and a main board;
  • the horn has a metal outer casing; the metal elastic piece has a spring foot;
  • the bullet of the metal dome is in contact with the metal casing of the horn;
  • the metal shrapnel is connected to the capacitance detecting interface of the main board through a connecting line;
  • the main board detects a change in capacitance through the capacitance detecting interface.
  • the above-mentioned human ear detecting structure further comprises: a sealing rubber sleeve sleeved on the horn for realizing the front and rear sound chamber sealing of the horn.
  • the sealing rubber sleeve is provided with a notch that avoids the elastic foot of the metal elastic piece.
  • the metal dome has one or more legs in contact with the metal casing of the horn.
  • the metal shrapnel is added between the speaker and the main board of the product having the human ear detecting function; the metal elastic piece is in contact with the metal outer casing of the speaker; and the metal elastic piece is connected to the capacitance detecting interface of the main board through the connecting line;
  • the main board detects the change of the capacitance through the capacitance detecting interface, and in the technical solution for starting the corresponding function, since the metal elastic piece is connected with the metal casing of the horn and the main board, the electrode is added. Detecting area, which enhances sensitivity and consistency of human ear detection
  • FIG. 1 is a flowchart of a method for detecting a human ear of a Bluetooth headset according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of assembling a human ear detecting structure of a Bluetooth earphone according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural view of a metal dome in the second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a sealing rubber sleeve according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic view showing the assembly of the horn, the sealing rubber sleeve and the elastic piece in the second embodiment of the present invention.
  • the core idea of the invention is: adding metal shrapnel between the speaker and the main board of the product having the human ear detecting function; contacting the metal elastic piece with the metal outer casing of the speaker; and making the metal elastic piece pass the connection line and the capacitance detecting interface of the main board Connecting; when the human body is in contact with or close to the horn, the main board detects a change in the capacitance through the capacitance detecting interface, and activates the corresponding function.
  • the first embodiment applies the human ear detection method to a Bluetooth headset.
  • the specific implementation is as follows:
  • FIG. 1 is a flow chart of a method for detecting a human ear of a Bluetooth headset in the first embodiment of the present invention. As shown in Figure 1, the method includes:
  • Step 101 adding a metal dome between the speaker of the Bluetooth headset and the motherboard;
  • Step 102 contacting the metal elastic shell with the metal shell of the horn;
  • Step 103 connecting the metal dome to the capacitance detecting interface of the main board through the connecting line;
  • Step 104 When the human body contacts or approaches the horn, the main board detects a change in the capacitance through the capacitance detecting interface, and activates the Bluetooth function.
  • a sealing rubber sleeve can be placed on the speaker of the Bluetooth earphone for sealing the front and rear sound chambers of the Bluetooth earphone speaker.
  • a gap is formed on the sealing rubber sleeve to avoid the metal shrapnel, which is referred to herein as a avoidance notch.
  • the metal dome may have more than one projectile.
  • step 102 more than one of the metal domes is brought into contact with the metal casing of the horn. And the metal elastic piece is connected with the horn, and a touch electrode is formed.
  • the human body contacts or approaches the touch electrode, the human body and the touch electrode form a human body sensing capacitance.
  • the capacitance detecting interface refers to an IO port of the capacitance detecting chip that is mounted on the main board and capable of detecting a change in capacitance of the capacitor.
  • the function of the metal dome is to increase the detection area of the electrode, so that the change of the capacitance of the IO port of the capacitance detecting chip is more obvious, thereby making the sensitivity of the human ear detection function of the Bluetooth earphone become higher and uniform.
  • the principle is that the size of the capacitor is related to the area of the electrode. After the metal dome is added, the area of the touch electrode is increased, thereby increasing the detection area of the electrode, and the change of the capacitance of the IO port of the capacitance detecting chip is more obvious. Therefore, the sensitivity of the human ear detection function of the Bluetooth earphone becomes higher and the consistency becomes better.
  • Sensitivity refers to the sensitivity of the human ear detection function of a product having a human ear detection function.
  • the IO port of the capacitance detecting chip on the main board can sometimes detect the human ear wearing the earphone, and sometimes the human ear can not be detected, which results in a lower consistency. problem.
  • the so-called consistency means that the IO port of the capacitance detecting chip can timely and accurately reflect the situation in which the ear wears the earphone, and timely and accurately determines whether the motherboard starts the corresponding function.
  • the second embodiment applies the human ear detection structure to a Bluetooth headset.
  • the specific implementation is as follows:
  • the Bluetooth headset includes: an ear cover 201, a speaker cover 202, a sealing double-sided tape 203, a sealing rubber sleeve 204, a speaker 205, a metal dome 206, a connecting wire 207, and a main board.
  • the main board is not clearly shown in Figure 2.
  • One end of the connecting line 207 is connected to the metal dome 206, and the other end of the connecting line 207 is connected to the main board.
  • the other end of the connecting line 207 is connected to the IO port of the capacitance detecting chip on the main board.
  • the human ear detecting structure in the Bluetooth earphone includes a speaker 205, a metal dome 206 and a main board.
  • the sealing rubber sleeve 204 is sleeved on the horn 205 for sealing the front and rear sound chambers of the horn 205.
  • the horn 205 has a metal outer casing; the metal elastic piece 206 has a resilient foot; the elastic foot of the metal elastic piece 206 is in contact with the metal outer casing of the horn 205; the metal elastic piece 206 is connected to the capacitance detecting interface of the main board through the connecting line 207; the main board passes the capacitance detecting interface to detect The change in capacitance.
  • the metal dome in the second embodiment of the present invention, has two legs 301.
  • the metal dome may also have one, three or more legs. That is, the metal dome may have more than one bullet to contact the metal casing of the horn.
  • FIG. 4 is a schematic structural view of a sealing rubber sleeve according to Embodiment 2 of the present invention.
  • the sealing rubber sleeve is provided with a notch 401 which avoids the elastic leg of the metal elastic piece.
  • two sealing holes 401 are disposed on the sealing rubber sleeve.
  • FIG. 5 is a schematic view showing the assembly of the horn, the sealing rubber sleeve and the elastic piece in the second embodiment of the present invention.
  • the notch on the sealing rubber sleeve avoids the elastic foot of the metal elastic piece, so that the metal elastic piece's elastic foot contacts the metal outer casing of the horn, as shown in FIG.
  • the contact position 501 of the metal spring's projectile foot contacting the metal casing of the horn is shown in FIG.
  • the role of the metal dome in the human ear detecting structure of the Bluetooth earphone in the second embodiment is the same as that of the metal dome of the embodiment.
  • the human ear detection function of the Bluetooth earphone detection method has high sensitivity and good consistency, and the human ear detection method is easy to implement.
  • the human ear detection function of the Bluetooth earphone human ear detection structure has high sensitivity and good consistency, and the human ear detection structure is easy to implement.

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Abstract

一种人耳检测方法和人耳检测结构。所述方法包括：在具有人耳检测功能的产品的喇叭（205）和主板之间增加金属弹片（206）；令金属弹片（206）的弹脚与喇叭（205）的金属外壳接触；令金属弹片（206）通过连接线（207）与主板的电容检测接口连接；当人体接触或靠近喇叭（205）时，主板通过所述电容检测接口检测到电容量的变化，启动相应功能。

Description

一种人耳检测方法和结构 技术领域
本发明涉及人耳检测技术领域，特别涉及一种人耳检测方法和结构。
发明背景
目前，在现有的蓝牙耳机、头戴耳机、入耳式耳塞以及3D眼镜等产品中都具有人耳检测（Ear detection）结构，它可以实现人耳检测功能。所谓人耳检测功能是指人耳检测结构检测人耳是否佩戴耳机，从而决定主板是否打开蓝牙的功能。
在现有技术中，耳机等声学产品中的人耳检测结构主要是通过喇叭本身的结构来实现的，具体的人耳检测功能是这样实现的：选定一个具有金属外壳的喇叭，将连接线的一端与喇叭的金属外壳相连，连接线的另一端与主板（PCBA板）上电容检测芯片的IO口相连，这时，喇叭的金属外壳就形成了电路里的一个触摸电极，当人体接触或靠近触摸电极时，人体与触摸电极形成了人体感应电容。主板上电容检测芯片的IO口检测到喇叭金属外壳上电容量的改变，主板就打开蓝牙。
但是，在现有技术中仍然存在一些问题。一方面，当喇叭本身单体较小或者产品空间有限的情况下，利用喇叭单体自己的体积实现人耳检测功能时，会造成主板上电容检测芯片的IO口检测到喇叭金属外壳上电容量改变比较不明显，这样，就使现有声学产品中人耳检测结构的人耳检测功能产生了灵敏度比较低或者一致性不是很好的问题。另一方面，在产品中可能是因为空间较小，又要考虑音腔空间喇叭的密封等问题，很难通过连接线材或者做大喇叭的办法来提高人耳检测功能的灵敏度和一致性。
发明内容
本发明提供了一种人耳检测方法和结构，以解决现有的具有人耳检测功能的产品的灵敏度低和一致性不好的问题。
为达到上述目的，本发明的技术方案是这样实现的：
本发明公开了一种人耳检测方法，所述方法包括：
在具有人耳检测功能的产品的喇叭和主板之间增加金属弹片；
令金属弹片的弹脚与喇叭的金属外壳接触；
令金属弹片通过连接线与主板的电容检测接口连接；
当人体接触或靠近喇叭时，主板通过所述电容检测接口检测到电容量的变化，启动相应功能。
该方法进一步包括：在所述喇叭上套一个密封胶套来实现喇叭前后音腔的密封。
该方法进一步包括：
在所述密封胶套上设置避开金属弹片的弹脚的缺口。
在上述方法中，所述令金属弹片的弹脚与喇叭的金属外壳接触包括：令金属弹片的一个以上的弹脚与喇叭的金属外壳接触。
本发明还公开了一种人耳检测结构，包括：喇叭、金属弹片和主板；
所述喇叭具有金属外壳；所述金属弹片具有弹脚；
金属弹片的弹脚与喇叭的金属外壳接触；
金属弹片通过连接线与主板的电容检测接口连接；
主板通过所述电容检测接口检测电容量的变化。
上述的人耳检测结构进一步包括：套在所述喇叭上的实现喇叭前后音腔密封的密封胶套。
在上述的人耳检测结构中，所述密封胶套上设置有避开金属弹片的弹脚的缺口。
在上述的人耳检测结构中，所述金属弹片具有一个以上的弹脚与喇叭的金属外壳接触。
本发明的这种在具有人耳检测功能的产品的喇叭和主板之间增加金属弹片；令金属弹片的弹脚与喇叭的金属外壳接触；令金属弹片通过连接线与主板的电容检测接口连接；当人体接触或靠近喇叭时，主板通过所述电容检测接口检测到电容量的变化，启动相应功能的技术方案中，由于金属弹片的弹脚与喇叭的金属外壳和主板相连后，增加了电极的检测面积，进而增强了人耳检测功能的灵敏度和一致性
附图简要说明
图1为本发明实施例一中的蓝牙耳机人耳检测方法的流程图；
图2为本发明实施例二中的蓝牙耳机人耳检测结构组装示意图；
图3为本发明实施例二中的金属弹片的结构示意图；
图4为本发明实施例二中的密封胶套的结构示意图；
图5为本发明实施例二中的喇叭、密封胶套和弹片的组装示意图。
实施本发明的方式
本发明的核心思想是：在具有人耳检测功能的产品的喇叭和主板之间增加金属弹片；令金属弹片的弹脚与喇叭的金属外壳接触；令金属弹片通过连接线与主板的电容检测接口连接；当人体接触或靠近喇叭时，主板通过所述电容检测接口检测到电容量的变化，启动相应功能。
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
实施例一是将这种人耳检测方法应用到一种蓝牙耳机中，具体实施方案如下：
图1是本发明实施例一中的蓝牙耳机人耳检测方法的流程图。如图1所示，该方法包括：
步骤101，在蓝牙耳机的喇叭和主板之间增加金属弹片；
步骤102，令金属弹片的弹脚与喇叭的金属外壳接触；
步骤103，令金属弹片通过连接线与主板的电容检测接口连接；
步骤104，当人体接触或靠近喇叭时，主板通过所述电容检测接口检测到电容量的变化，启动蓝牙功能。
在本发明的实施例一中，还可以在蓝牙耳机的喇叭上套一个密封胶套，用来实现蓝牙耳机喇叭前后音腔的密封。在这个密封胶套上设置有避开金属弹片弹脚的缺口，这里称为避位缺口。
金属弹片可以有一个以上的弹脚，则在步骤102中，令金属弹片的一个以上的弹脚与喇叭的金属外壳接触。并且金属弹片的弹脚和喇叭相连后，形成了一个触摸电极，当人体接触或靠近触摸电极时，人体与触摸电极形成了人体感应电容。
在步骤103中，电容检测接口是指安装在主板上的，能够检测电容的电容量改变的电容检测芯片的IO口。
在本发明的实施例中，金属弹片的作用是增加电极的检测面积，使电容检测芯片的IO口检测到电容量的改变更明显，进而使蓝牙耳机的人耳检测功能灵敏度变高，一致性变好。其原理是因为电容的大小与电极的面积有关，在加入金属弹片后，增加了触摸电极的面积，进而增加了电极的检测面积，使电容检测芯片的IO口检测到电容量的改变更明显，从而使蓝牙耳机的人耳检测功能灵敏度变高，一致性变好。
所谓灵敏度是指具有人耳检测功能的产品的人耳检测功能的灵敏性。
人耳佩戴耳机后，在电容量发生改变不明显的情况下，主板上电容检测芯片的IO口有时能检测到人耳佩戴耳机，有时不能检测到人耳佩戴耳机，即产生了一致性较低问题。所谓一致性是指电容检测芯片的IO口能及时准确的反映人耳佩戴耳机的情况，并且及时准确的决定主板是否启动相应功能。
实施例二是将这种人耳检测结构应用到一种蓝牙耳机中，具体实施方案如下：
图2为本发明实施例二中的蓝牙耳机人耳检测结构组装示意图。参见图2，这种蓝牙耳机包括：耳套201、喇叭盖202、密封双面胶203、密封胶套204、喇叭205、金属弹片206、连接线207和主板。主板在图2中没有明确示意。连接线207的一端与金属弹片206连接，连接线207的另一端与主板连接，具体来说连接线207的另一端与主板上的电容检测芯片的IO口连接。这种蓝牙耳机中的人耳检测结构包括：喇叭205、金属弹片206和主板。其中密封胶套204套在喇叭205上用来实现喇叭205前后音腔的密封。
喇叭205具有金属外壳；金属弹片206具有弹脚；金属弹片206的弹脚与喇叭205的金属外壳接触；金属弹片206通过连接线207与主板的电容检测接口连接；主板通过所述电容检测接口检测电容量的变化。
图3为本发明实施例二中的金属弹片的结构示意图。参见图3，在本发明实施例二中金属弹片具有两个弹脚301。在本发明的其他实施例中，金属弹片也可以有1个、3个或者更多的弹脚。即金属弹片可以具有一个以上的弹脚与喇叭的金属外壳接触。
图4为本发明实施例二中的密封胶套的结构示意图。如图4所示，密封胶套上设置有避开金属弹片的弹脚的缺口401，本实施例中由于金属弹片具有两个弹脚301，密封胶套上设置有两个缺口401。
图5为本发明实施例二中的喇叭、密封胶套和弹片的组装示意图。如图5所示，喇叭、密封胶套和弹片组装在一起时，密封胶套上的缺口避开金属弹片的弹脚，使得金属弹片的弹脚与喇叭的金属外壳接触，图5中示意出了金属弹片的弹脚与喇叭的金属外壳接触的接触位置501。
在实施例二中的蓝牙耳机的人耳检测结构中金属弹片的作用与实施例一种的金属弹片的作用相同。
综上所述本发明的技术方案有如下的优点：
1、蓝牙耳机人耳检测方法的人耳检测功能灵敏度高，一致性好，而且此人耳检测方法容易实现。
2、蓝牙耳机人耳检测结构的人耳检测功能灵敏度高，一致性好，而且此人耳检测结构容易实现。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本发明的保护范围内。

Claims (8)

  1. 一种人耳检测方法，其特征在于，所述方法包括：
    在具有人耳检测功能的产品的喇叭和主板之间增加金属弹片；
    令金属弹片的弹脚与喇叭的金属外壳接触；
    令金属弹片通过连接线与主板的电容检测接口连接；
    当人体接触或靠近喇叭时，主板通过所述电容检测接口检测到电容量的变化，启动相应功能。
  2. 如权利要求 1所述的人耳检测方法，其特征在于，该方法进一步包括：在所述喇叭上套一个密封胶套来实现喇叭前后音腔的密封。
  3. 如权利要求2所述的人耳检测方法，其特征在于，该方法进一步包括：
    在所述密封胶套上设置避开金属弹片的弹脚的缺口。
  4. 如权利要求1所述的人耳检测方法，其特征在于，所述令金属弹片的弹脚与喇叭的金属外壳接触包括：令金属弹片的一个以上的弹脚与喇叭的金属外壳接触。
  5. 一种人耳检测结构，其特征在于，包括：喇叭、金属弹片和主板；
    所述喇叭具有金属外壳；所述金属弹片具有弹脚；
    金属弹片的弹脚与喇叭的金属外壳接触；
    金属弹片通过连接线与主板的电容检测接口连接；
    主板通过所述电容检测接口检测电容量的变化。
  6. 如权利要求5所述的人耳检测结构，其特征在于，该结构进一步包括：套在所述喇叭上的实现喇叭前后音腔密封的密封胶套。
  7. 如权利要求6所述的人耳检测结构，其特征在于，
    所述密封胶套上设置有避开金属弹片的弹脚的缺口。
  8. 如权利要求5所述的人耳检测结构，其特征在于，
    所述金属弹片具有一个以上的弹脚与喇叭的金属外壳接触。
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