WO2012162979A1 - 一种智能感应控制的头戴式耳机 - Google Patents

一种智能感应控制的头戴式耳机 Download PDF

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Publication number
WO2012162979A1
WO2012162979A1 PCT/CN2011/079741 CN2011079741W WO2012162979A1 WO 2012162979 A1 WO2012162979 A1 WO 2012162979A1 CN 2011079741 W CN2011079741 W CN 2011079741W WO 2012162979 A1 WO2012162979 A1 WO 2012162979A1
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Prior art keywords
earphone
intelligent
sensing electrode
circuit module
proximity sensing
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PCT/CN2011/079741
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English (en)
French (fr)
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王春国
袁信明
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易力声科技(深圳)有限公司
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Publication of WO2012162979A1 publication Critical patent/WO2012162979A1/zh

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices

Definitions

  • the present invention relates to a headset, and more particularly to a headset that uses smart sensing to control the headset to be turned on and off.
  • the earphone is a personal sound playback device widely used in audio-visual equipment and communication equipment, and converts the sound source signal into sound for the user to answer.
  • the earphone is divided into an earphone and a headset, and the earphone is small in size and light in weight, and needs to be inserted into the ear canal; the earphone is usually composed of a hanger and two earmuffs with built-in sounding equipment.
  • the type of earpiece is also relatively large, and two earmuffs are placed on the auricle, and the sound is transmitted to the ear canal.
  • the earmuffs also isolate external noise for the best sound.
  • the earphone When the earphone works, it needs electric signal to drive to generate sound signal. In the case of sounding, it will involve a large power consumption. When not using or removing the earphone from the state of wearing, it is better to turn off the earphone to save power. . Whether setting the switch on the headset or unplugging the headset from the audio jack involves human operation. When the user forgets to operate the switch or forgets to remove the headset from the audio jack, the headset will remain Working status.
  • the invention discloses a novel method for judging whether the earphone is worn on the user's head by detecting the proximity of the earmuff and the human ear, thereby realizing the intelligent control of the opening and closing of the headset. Headphone structure.
  • the headphone generally includes a head-mounted truss and earphones on both sides, and has a circuit module for realizing audio signal control, amplification, and the like.
  • the wired earphone is connected to the sound source and the earphone through a plug and a cable; the wireless earphone realizes signal transmission through a pair of wireless transmission modules respectively installed on the sound source and the earphone.
  • an intelligent sensor-controlled headset including a head-mounted truss, a headphone handset, and the key point is that the earphone further includes a sensor for sensing the proximity to the human ear or the head.
  • the proximity sensing electrode, the capacitance detecting circuit module and the switch control circuit module The detection system formed by the proximity sensing electrode and the capacitance detecting circuit module tracks the change of the sensing capacitance to determine whether the earpiece is covered on the auricle or whether the head-mounted truss is worn on the head, thereby determining the switch control timing.
  • the capacitance detecting circuit module can detect the change and convert it into some form of digital or analog signal for providing to the back.
  • Switch control circuit module implements the required switching action according to the magnitude of the received capacitance change signal and the preset switch threshold.
  • the earphone comprises a casing, a circuit board, a speaker, a cover and an earmuff which are sequentially connected, and the earmuff is made of a soft material, and has a good fit with the auricle, and forms a closed sound field environment from the speaker to the ear canal. For the best auditory results.
  • the capacitance detecting circuit module and the switch control circuit module are disposed inside the earphone of the earphone.
  • the proximity sensing electrode is a conductive thin plate or a conductive film disposed in the earphone of the earphone.
  • the proximity sensing electrode may be disposed outside the cover plate according to the shape of the earphone earpiece and the cover plate, or may be disposed on the inner side of the cover plate. .
  • the proximity sensing electrode may be formed into any geometric shape, such as a ring structure or a disk-like structure. If the proximity sensing electrode covers or blocks the sounding channel of the speaker, the corresponding proximity electrode needs to be corresponding. The sound hole is opened at the position to avoid affecting the sound effect of the speaker.
  • the proximity sensing electrode may also be a conductive film formed by plating on the surface of the cover.
  • the proximity sensing electrode may also be disposed in the head-mounted truss and connected to the capacitance detecting circuit module. By detecting the proximity or contact state of the head-mounted truss and the head, it is determined whether the user wears the earphone, and accordingly The switch control of the earphone realizes the intelligent control of the headset.
  • the invention is particularly directed to a headset, which uses a proximity sensing electrode in a head-mounted truss or earmuff of the headset to form a capacitive sensing detection system, which senses the proximity of the earphone to the human body, and accordingly Whether the headset is worn on the user's head.
  • the invention can intelligently control the switch of the earphone, the earphone is opened on the head, and the earphone is opened and closed, and the human operation switch is not needed, thereby greatly improving the convenience of the user, reducing unnecessary power loss, and achieving convenience. The effect of energy saving.
  • FIG. 1 is a schematic block diagram of an intelligent control system for a headset of the present invention
  • FIG. 2 is a schematic structural view of a headset of the present invention
  • Figure 3 is a schematic exploded view of the earphone of Figure 2;
  • Figure 4 is a schematic diagram of a simplified earphone circuit with automatic induction control.
  • the block diagram of the intelligent control system for the headset of the present invention is shown in FIG. 1 and includes three parts: a proximity sensing electrode, a capacitance detecting circuit module and a switch control circuit module.
  • the proximity sensing electrode is a conductive thin plate or a conductive film connected to the capacitance detecting circuit module through a lead wire, and a sensitive capacitor is formed between the proximity sensing electrode and the power ground, and the sensitive capacitance parameter is when the human body approaches or touches the proximity sensing electrode.
  • the capacitance detection circuit converts the change of the capacitance parameter into a change of the electrical signal
  • the switch control circuit determines whether the opening requirement is reached according to the degree of the signal change and the preset threshold, and when the proximity is sufficiently high, the device is opened at the appropriate time.
  • the switch enters the working state.
  • FIG. 2 is a schematic structural view of a headset according to the present invention, including a head mounted truss 100, an earphone receiver 200, and a lead 300. And a plug 400, for some headset wireless headphones, receiving audio signals through the wireless transceiver module, without the need for lead 300 and plug 400. However, it is necessary to have wireless transmitting and receiving modules at both ends of the signal.
  • the structure of the earphone receiver 200 is shown in Figure 3
  • the device includes a housing 201, a circuit board 202, a speaker 203, a cover 204, a proximity sensing electrode 205, and an earmuff 206.
  • the earmuffs 206 are made of a soft material and have a good fit with the auricle.
  • the speaker to the ear canal form a closed sound field environment for the best audible effect, and the capacitance detecting circuit module and the switch control circuit module are disposed on the circuit board 202 or another separate circuit board.
  • the proximity sensing electrode 205 may be disposed on the other side of the cover 204.
  • the proximity sensing electrode 205 in this embodiment is a disk-like structure, and a sound hole is opened at a position corresponding to the disk-shaped proximity sensing electrode 205 and the speaker 203 to avoid blocking the sounding channel and affecting the speaker's sounding effect.
  • the proximity sensing electrode 205 may also be a ring structure, and a conductive layer may be plated on the outer surface or the inner surface of the cover plate 204 as the proximity sensing electrode 205. It is required that there is no conductive shielding layer between the earmuff 206 and the proximity sensing electrode 205. If a metal shielding layer exists in front of the sensing electrode 205, the capacitive sensing change of the human body approaching will be shielded.
  • Another embodiment of the proximity sensing electrode of the present invention may be provided in the head mounted truss 100 and connected to the capacitance detecting circuit module through a wire, and the above technical effects can also be achieved.
  • FIG. 4 is a schematic diagram of a control circuit of a simplified automatic induction control earphone according to the present invention.
  • two proximity sensing electrodes ie, a left proximity sensing electrode 2051 and a right proximity sensing electrode 2052
  • two power control switches in series ie, the left power control switch 6001 and the right power control switch 6002
  • the left earphone earpiece and the right earphone earpiece cover are on the left and right ears of the user, and the left proximity sensing electrode 2051 and the right proximity sensing electrode 2052 are sensed by the human body.
  • the capacitance detecting circuit module After detecting the capacitance parameter change, the capacitance detecting circuit module outputs a signal to the switch control module (ie, The left switch control module 5001 and the right switch control module 5002), the control switch is turned on, the power source 700 is connected to the circuit board 202, and sound is transmitted through the two speakers (ie, the left speaker 2031 and the right speaker 2032).
  • the switch control module ie, The left switch control module 5001 and the right switch control module 5002
  • the control switch is turned on
  • the power source 700 is connected to the circuit board 202
  • sound ie, the left speaker 2031 and the right speaker 2032.
  • the above embodiment adopts the method of two-way induction series operation, which can improve the reliability of the system work and reduce the false start phenomenon under non-working conditions.
  • only one of them is adopted, that is, single-channel control is adopted, and the power control switch is only provided in the earphone of the left or right side, and the effect of the sensor switch control can also be obtained.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Abstract

公开了一种智能感应控制的头戴式耳机，包括头戴式扼架、耳机听筒，所述耳机还包括感测耳机与人体接近状态的接近感应电极，通过检测接近感应电极对地的电容变化来判断耳机是否正确戴在头上的电容检测电路模块，以及根据电容检测电路模块的检测结果实施相应的开机或关机操作的开关控制电路模块。实现了对头戴式耳机的开关智能控制，戴在头上时自动开机，摘下时自动关断，提高了用户使用的方便性，同时也可以减少不必要的电耗。

Description

一种智能感应控制的头戴式耳机 技术领域
本发明涉及一种头戴式耳机，特别涉及一种用智能感应控制耳机开机和关机操作的头戴式耳机。
背景技术
耳机是影音设备和通讯设备中广泛使用的个人声音播放设备，将音源信号转换成声音以供用户接听。在结构形式上，耳机分为耳塞式耳机和头戴式耳机，耳塞式耳机体积小、重量轻，需要塞入耳道使用；头戴式耳机通常由挂架和两个内藏发声设备的耳罩式听筒组成，体积也比较大，两个耳罩罩在耳廓上，声音传入耳道。耳罩还可以隔绝外部噪声，获得最好的声音效果。
耳机工作时需要电信号驱动来产生声音信号的，在发声情况下会涉及较大的功率消耗，在不使用或者将耳机从头戴状态取下时，最好能将耳机关掉，以便节省电力。无论是在耳机上设置开关，或者是将耳机从音源插孔中拔下，都涉及到人的操作，当用户忘记操作开关或者忘记将耳机从音源插孔中拔出，就会使耳机一直处于工作状态。
对于有独立电源供电的耳机，这方面的问题尤为明显，如果不加控制，耳机的电源会产生大量的无谓消耗。通常，会在耳机设备上设置机械开关，通过操纵设置在耳机设备上的开关，可以使耳机在工作和待机（开 / 关）模式之间切换，如果用户忘记操作这一开关，就有可能使设备长期处于工作状态，持续地消耗电力。
考虑设计某种智能化的控制方式，检测耳机在使用或者不使用的状态的某种信息变化，通过这种信号的实现自动的开关机控制，将大大方便用户使用，并可达到节能的效果。
中国专利 200610074142.8 公开了一种针对耳塞式耳机的的智能开关控制系统，利用耳塞插入耳道时，具有导电性的耳塞头与人体的接触，产生在耳机内部设置的电容传感器的信号变化，通过这一信号变化，判断听筒是否已插入用户耳道内或者已从其中移除，相应地控制耳机处于开启或待机状态。这种方法，可以大大提高用户使用的方便性。耳机塞入即开启，耳机取出即关闭，但这种耳机主要是针对耳塞式耳机系统使用，目前还没有针对头戴式耳机实现智能控制的耳机系统。
发明内容
为实现头戴式耳机的智能开关控制，本发明公开了一种通过耳罩与人耳贴近状态的检测来判断耳机是否戴在用户头上，进而实现头戴式耳机开、关机智能控制的新型耳机结构。
所说的头戴式耳机一般都包括头戴式扼架和两边的耳机听筒，内部有实现音频信号控制、放大等功能的电路模块。在音源连接方式上有有线和无线两种。有线耳机是通过插头和电缆线连接音源和耳机；无线耳机是通过分别安装在音源上和耳机上的一对无线传输模块实现信号传输。
本发明的技术方案如下：一种智能感应控制的头戴式耳机，包括头戴式扼架、耳机听筒，关键是：所述耳机内还包括用于感测与人耳或者头部接近状态的的接近感应电极、电容检测电路模块和开关控制电路模块。通过接近感应电极和电容检测电路模块构成的检测系统跟踪感应电容的变化来判断听筒是否罩在耳廓上或头戴式扼架是否戴在头上，据此决定开关控制时机。
当感应电极接近人体时，会导致该接近感应电极对电源地所形成的电容发生参数变化，电容检测电路模块可以检测到这一变化，将之转换成某种形式的数字或模拟信号提供给后面的开关控制电路模块。开关控制电路模块根据接收到的电容变化信号的大小和预设的开关阈值实施所需要的开关动作。
所述耳机听筒包括依次连接的外壳、电路板、扬声器、盖板、耳罩，耳罩使用柔软材料制成，跟耳廓有很好的贴合，从扬声器到耳道形成密闭的声场环境，以获得最好的听觉效果。所述电容检测电路模块和开关控制电路模块设置在耳机听筒内部。
所述接近感应电极是设置在耳机听筒内的一个导电薄板或者是导电薄膜，所述接近感应电极可以根据具体的耳机听筒及盖板形状，设置在盖板外侧，也可以设置在盖板的内侧。所述接近感应电极可以做成任意的几何形状，比如环状结构或圆片状结构，如果所述的接近感应电极覆盖或遮挡了扬声器的出声通道，则需在所述接近感应电极的相应位置开设出声孔，避免影响扬声器的出声效果。
所述接近感应电极也可以为在盖板表面电镀形成的导电膜。
所述接近感应电极也可以设置在头戴式扼架内并与电容检测电路模块连接，通过检测头戴式扼架与头部的接近或接触状态，判断用户是否将耳机戴上，据此进行耳机的开关控制，实现头戴式耳机的智能化控制。
本发明特别针对头戴式耳机，利用在头戴式耳机的头戴式扼架或耳罩内设置接近感应电极，形成一种电容式感应检测系统，感测耳机与人体的接近，据此判断耳机是否戴在用户头上。本发明可以对头戴式耳机进行开关智能控制，耳机戴在头上就打开，取下即关闭，不需要人为操作开关，大大提高用户使用的方便性，减少不必要的电能损耗，达到方便、节能的效果。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明的头戴式耳机智能控制系统原理框图；
图2是本发明的头戴式耳机结构示意图；
图3是图2中耳机听筒的结构分解示意图；
图4 是一个简化的自动感应控制的耳机电路原理图。
其中： 100 头戴式扼架， 200 耳机听筒， 300 引线， 400 接插头，700 电源， 201 外壳，202 电路板，203 扬声器，204 盖板，205 接近感应电极，206 耳罩，2031 左扬声器，2032 右扬声器，2051 左接近感应电极，2052 右接近感应电极，5001 左开关控制模块 ，5002 右开关控制模块，6001 左电源控制开关，6002 右电源控制开关。
具体实施方式
下面将结合具体实施例对本发明进行详细说明。本发明的头戴式耳机智能控制系统原理框图如图1所示，包含接近感应电极、电容检测电路模块和开关控制电路模块三部分。接近感应电极是一个导电薄板或者是导电薄膜，通过引线连接到电容检测电路模块，接近感应电极对电源地之间构成一个敏感电容，当人体接近或触摸接近感应电极时，所述的敏感电容参数将发生改变，电容检测电路将电容参数的改变转换成电信号的变化，开关控制电路根据信号变化的程度和预先设定的门槛，确定是否达到开启要求，当接近程度足够高时，适时打开设备开关进入工作状态。
本发明的头戴式耳机结构示意图如图 2 所示，包括头戴式扼架 100 、耳机听筒 200 、引线300 以及接插头 400 ，对于有些头戴式无线耳机，通过无线收发模块接收音频信号，不需要引线 300 和接插头 400。但是需要在信号的两端配备无线发射、接收模块。
耳机听筒 200 的结构分解示意图如图 3 所示，包括依次连接的外壳201、电路板202、扬声器203、盖板204、接近感应电极205、耳罩206，耳罩206使用柔软材料制成，跟耳廓有很好的贴合，使扬声器到耳道形成密闭的声场环境，以获得最好的听觉效果，电容检测电路模块和开关控制电路模块设置在电路板202上，或者是另外的独立电路板。
当然，接近感应电极205可以设置在盖板204的另外一侧。
本实施例中的接近感应电极205是圆片状结构，在圆片状的接近感应电极205与扬声器203对应位置开设有出声孔，以避免阻挡发声通道，影响扬声器的扬声效果。
同时，接近感应电极205也可以是环状结构，也可以在盖板204的外表面或内表面电镀一层导电层作为接近感应电极205。要求在耳罩206和接近感应电极205之间没有导电的屏蔽层，在接近感应电极205前面若存在金属屏蔽层，将会屏蔽人体接近的电容感应变化。
本发明的接近感应电极的另一种实施方式可以是将其设置在头戴式扼架100内并通过导线与电容检测电路模块连接，同样可以实现上述技术效果。
图4所示，是本发明的一个简化的自动感应控制的耳机的控制电路实施例，本实施例采用了两个接近感应电极（即左接近感应电极2051和右接近感应电极2052），分别置于左右两个耳机听筒(即左耳机听筒和右耳机听筒)内，分别控制两个串联的电源控制开关（即左电源控制开关6001和右电源控制开关6002），当耳机戴在用户头上后，左耳机听筒和右耳机听筒罩在用户的左右耳上，左接近感应电极2051和右接近感应电极2052受到人体感应，电容检测电路模块检测到电容参数变化后，输出信号至开关控制模块（即左开关控制模块5001和右开关控制模块5002），控制开关接通，使电源700接入电路板202，通过两个扬声器（即左扬声器2031和右扬声器2032）发声。
上述实施例采用了双路感应串联工作的方式，可以提高系统工作的可靠性，减少非工作情况下的误开机现象。当然只采用其中的一路，即采用单路控制，只在左侧或右侧的耳机听筒内设置电源控制开关，也一样可以获得感应开关控制的效果。
综上所述，尽管本发明通过具体实施例对本发明结构进行了详细描述，但本领域一般技术人员应该明白的是，上述实施例仅仅是对本发明的优选实施例的描述，而非对本发明保护范围的限制，本领域一般技术人员在本发明所揭露的技术范围内，可轻易想到的变化，均在本发明的保护范围之内。

Claims (9)

  1. 一种智能感应控制的头戴式耳机，包括头戴式扼架、耳机听筒，耳机听筒包括依次连接的外壳、电路板、扬声器、盖板、耳罩等，其特征在于：所述耳机还包括感测人体与所述耳机接近状态的接近感应电极、电容检测电路模块、开关控制电路模块。
  2. 根据权利要求1所述的智能感应控制的头戴式耳机，其特征在于：所述接近感应电极安置在耳罩内的盖板表面，为耳罩所覆盖，不外露，所述电容检测电路模块和开关控制电路模块与耳机的音频处理模块设置在同一块电路板上，通过检测所述耳机听筒与耳朵的接触与否实施智能开关控制。
  3. 根据权利要求2所述的智能感应控制的头戴式耳机，其特征在于：所述接近感应电极是由在盖板表面电镀形成的导电膜构成。
  4. 根据权利要求1所述的智能感应控制的头戴式耳机，其特征在于：所述接近感应电极安置在耳罩内的盖板表面，为耳罩所覆盖，不外露，所述电容检测电路模块和开关控制电路模块是独立于音频处理模块的单独制作的电路模块，通过检测所述耳机听筒与耳朵的接触与否实施智能开关控制。
  5. 根据权利要求4所述的智能感应控制的头戴式耳机，其特征在于：所述接近感应电极是由在盖板表面电镀形成的导电膜构成。
  6. 根据权利要求2、4所述的智能感应控制的头戴式耳机，其特征在于：耳机的智能感应控制采用双路串联控制，在左右两个耳机听筒内均设置有电源控制开关，只有当两侧听筒均罩在耳朵上时耳机才开机工作。
  7. 根据如权利要求2、4所述的智能感应控制的头戴式耳机，其特征在于：耳机的智能感应控制采用单路控制，只在左侧或右侧的耳机听筒内设置有电源控制开关，只要感应侧的听筒罩在耳朵上耳机即可开机工作。
  8. 根据权利要求2、4所述的智能感应控制的头戴式耳机，其特征在于：所述接近感应电极是导电薄板，为圆片状或环状，所述导电薄板覆盖扬声器的部分开有出声孔，保证声音信号到耳道的顺利传送。
  9. 根据权利要求1所述的智能感应控制的头戴式耳机，其特征在于：所述接近感应电极设置在头戴式扼架内且与电容检测电路模块电连接，通过头戴式扼架接触人的头部时引起的接触感应电极对电源地的电容变化检测判断耳机是否戴在头上，据此实施自动开关控制。
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