WO2018032675A1 - 一种数字耳机 - Google Patents

一种数字耳机 Download PDF

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Publication number
WO2018032675A1
WO2018032675A1 PCT/CN2016/110994 CN2016110994W WO2018032675A1 WO 2018032675 A1 WO2018032675 A1 WO 2018032675A1 CN 2016110994 W CN2016110994 W CN 2016110994W WO 2018032675 A1 WO2018032675 A1 WO 2018032675A1
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WO
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Prior art keywords
module
digital
earphone
temperature
digital earphone
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PCT/CN2016/110994
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English (en)
French (fr)
Inventor
曹新放
卢永江
李君龙
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歌尔股份有限公司
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Publication of WO2018032675A1 publication Critical patent/WO2018032675A1/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
    • 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

Definitions

  • the present invention relates to the field of headphones, and more particularly to a digital earphone provided with a temperature sensor.
  • the existing earphone circuit protection mode is mainly based on overvoltage or overcurrent detection of the electric signal for protection.
  • the earphone automatically powers off to protect the earphone.
  • the related components are heated in the form of thermal energy due to short-circuiting of the earphone or other abnormalities. Therefore, the temperature sensor can be used to effectively protect the headphone from burning due to various abnormal operations.
  • a digital earphone includes a temperature detecting module, a processing module, and a power switch connected to a power supply loop of the digital earphone, the temperature detecting module being configured to detect the soldering The current temperature of the circuit board of the temperature detecting module; the processing module being configured to compare the current temperature with a reference temperature and control a state of the power switch according to the comparison result.
  • the digital earphone further includes a decoding module and an encoding module, and the decoding module is configured to perform digital-to-analog conversion processing on the digital signal received by the digital earphone to obtain an analog left channel signal and a right The channel signal is correspondingly transmitted to the corresponding earpiece; the coding module is It is arranged to perform analog-to-digital conversion processing on the analog signal collected by the microphone, and obtain a microphone digital signal to be transmitted to the terminal connected to the digital earphone.
  • the digital earphone further includes a voltage conversion module, the voltage conversion module and the power switch are connected in series on a power supply loop of the digital earphone, and the voltage conversion module is configured to set the digital earphone
  • the voltage provided by the power pin is converted to a supply voltage of the temperature detecting module, the processing module, the decoding module, and the encoding module to a corresponding module.
  • the decoding module, the encoding module, the temperature detecting module, and the processing module are all soldered on the same circuit board.
  • the decoding module, the encoding module, the temperature detecting module, and the processing module are all provided by a codec chip.
  • a digital earphone comprising a temperature detecting module and a processing module, the temperature detecting module being configured to detect a current temperature of a circuit board to which the temperature detecting module is soldered; the processing module It is configured to perform a format conversion process on the current temperature, and transmit a current temperature after the format conversion process to the terminal connected to the digital earphone for on/off control.
  • the digital earphone further includes a decoding module and an encoding module, and the decoding module is configured to perform digital-to-analog conversion processing on the digital signal received by the digital earphone to obtain an analog left channel signal and a right The channel signal is correspondingly transmitted to the corresponding earpiece; the encoding module is configured to perform analog-to-digital conversion processing on the analog signal collected by the microphone, and the microphone digital signal is transmitted to the terminal connected to the digital earphone.
  • the digital earphone further includes a voltage conversion module, the voltage conversion module is configured to convert a voltage provided by a power pin of the digital earphone into the temperature detecting module, the processing module, and the decoding The supply voltage of the module and the encoding module is provided to a corresponding module.
  • the decoding module, the encoding module, the temperature detecting module, and the processing module are all soldered on the same circuit board.
  • the decoding module, the encoding module, the temperature detecting module, and the processing module are all provided by a codec chip.
  • the inventors of the present invention have found that in the prior art, there is a problem that the earphone circuit protection mode can only protect the circuit to which the protection circuit is added and occupy a large space.
  • the earphone circuit protection mode can only protect the circuit to which the protection circuit is added and occupy a large space.
  • the earphone circuit protection mode can only protect the circuit to which the protection circuit is added and occupy a large space.
  • the earphone circuit protection mode can only protect the circuit to which the protection circuit is added and occupy a large space.
  • the earphone circuit protection mode can only protect the circuit to which the protection circuit is added and occupy a large space.
  • the earphone circuit protection mode by detecting the temperature of the circuit board soldered with the temperature detecting module, comparing the temperature with the reference temperature, and performing on/off control of the earphone according to the comparison result, the earphone can be protected, and various types are effectively prevented.
  • the earphones caused by abnormal operation burned out. Therefore, the technical task to be achieved
  • FIG. 1 is a block schematic diagram of an implementation structure of a digital earphone according to the present invention.
  • FIG. 2 is a block schematic diagram showing another embodiment of a digital earphone according to the present invention.
  • Figure 3 is a block schematic diagram showing a third embodiment of a digital earphone in accordance with the present invention.
  • U1 temperature detection module
  • U2 processing module
  • U4 coding module
  • U5 voltage conversion module
  • J1 USB plug
  • D+, D- differential pin of USB plug
  • VCC power pin of USB plug
  • VCC1, VCC2, VCC3 voltage
  • MIC microphone
  • LE left ear handset
  • RE Right ear handset
  • GND Ground pin of USB plug.
  • the digital earphone includes a temperature detecting module U1.
  • the power switch S1 is connected to the power supply circuit of the digital earphone. When the power switch S1 is closed, the digital earphone is powered and works normally. When the power switch S1 is turned off, the digital earphone is powered off and stops working.
  • the power switch S1 is specifically a controllable switch, and the processing module U2 controls the switching state of the power switch S1.
  • the power switch S1 can be implemented by a discrete component such as a triode or a MOS transistor. For example, it can be an N-type transistor, a P-type transistor, an N-channel MOS transistor, or a P-channel MOS transistor.
  • the temperature detecting module U1 may be configured to detect an average temperature of all components on the circuit board soldered with the temperature detecting module U1. Since all components soldered on the same circuit board as the temperature detecting module U1 are connected by copper, the copper skin may be Heat conduction, if there is a short circuit or other abnormality on the board, the related components will heat up, and the generated heat will be transmitted to all positions of the board through the copper skin. Therefore, the temperature detecting module U1 will detect the circuit in real time. The current temperature of the board and the current temperature is transmitted to the processing module U2 in real time.
  • the temperature detecting module U1 needs to first detect the temperature of the circuit board when the earphone works normally.
  • the degree range for example, the maximum value within the temperature range can be used as the reference temperature and stored in the processing module U2 in advance.
  • the processing module U2 compares the received current temperature with a pre-stored reference temperature. If the current temperature does not exceed the reference temperature, the components of the circuit board can be considered to be normal. Therefore, the control signal for controlling the closing of the power switch S1 is output, for example, It can be a high level, so that the digital earphone of the present invention is powered on and works normally; if the current temperature exceeds the reference temperature, it can be considered that there is a short circuit or other abnormality on the circuit board, and finally the related component heats up. Therefore, the output control power switch S1
  • the disconnected control signal for example, can be low level, so that the digital earphone of the present invention is powered off and stopped. Thus, the protection of the digital earphone of the present invention is realized, and the heat generation of the earphone caused by various abnormal operations is effectively prevented.
  • the temperature detecting module U1 and the processing module U2 still work normally, that is, the temperature detecting module U1 detects the current temperature, and the processing module U2 detects whether the current temperature exceeds the reference temperature, and controls the state of the power switch S1 in real time to ensure The digital earphone can be used normally after the temperature is lowered to less than the reference temperature.
  • the temperature detecting module U1 can be provided by a digital temperature sensor.
  • the digital earphone of the present invention further comprises a decoding module U3 and an encoding module U4. Since the signal received by the digital earphone is a digital signal of the earpiece, and the earphone earpiece can only be driven by an analog signal, the number of the earpiece received by the decoding module U3 for the digital earphone of the present invention is required.
  • the signal is subjected to digital-to-analog conversion processing to obtain an analog left channel signal and a right channel signal, and the left channel signal is transmitted to the left ear handset LE, and the right channel signal is transmitted to the right ear handset RE;
  • the voice signal is an analog signal, and the digital earphone of the present invention can only communicate with the connected terminal through the digital signal. Therefore, the encoding module U4 needs to perform analog-to-digital conversion processing on the analog signal collected by the microphone, and obtain the digital signal of the microphone to be transmitted thereto.
  • the plug of the digital earphone of the present invention may be a USB plug J1, wherein the USB plug J1 has a ground pin GND, a power pin VCC, and a pair of differential pins D+, D-, and a voltage of the USB plug J1.
  • the pin VCC is powered by the digital earphone of the present invention
  • the ground pin GND is connected to the ground end of the digital earphone of the present invention
  • a pair of differential pins D+, D- are used for transmitting the digital signal of the earpiece and the digital signal of the microphone.
  • USB plug J1 can be USB A type plug, mini-USB Any of a plug, a micro-USB plug, and a Type-C plug.
  • the digital earphone may further include a voltage conversion module U5, a voltage conversion module U5 and a power switch S1.
  • the voltage conversion module U5 is configured to convert the voltage VCC1 provided by the power supply pin VCC of the earphone into the corresponding modules of the decoding module U3 and the supply voltages VCC2, VCC3 of the encoding module U4, for example
  • the power supply voltage of the temperature detecting module U1 and the processing module U2 is 5V
  • the power supply voltage of the decoding module U3 is 1.8V
  • the power supply voltage of the encoding module U4 is 3.3V. Then, the 5V voltage provided by the power supply pin VCC of the earphone is directly provided to the temperature detection.
  • voltage conversion module U5 converts the 5V voltage provided by the power supply pin VCC of the earphone to a supply voltage of 1.8V to the decoding module U3, and converts the 5V voltage provided by the power supply pin VCC of the earphone to the power supply of 3.3V.
  • the voltage is supplied to the encoding module U4.
  • the cost of the processing module U2, the decoding module U3 and the encoding module U4 is relatively high. Therefore, only the processing module U2, the decoding module U3 and the encoding module U4 can be temperature-detected to avoid damage during use. Since the temperature detecting module U1 detects the temperature of all components on the circuit board soldered with the temperature detecting module U1, in a specific embodiment of the present invention, the temperature detecting module U1, the processing module U2, and the decoding module can be Both U3 and encoding module U4 are soldered to the same board.
  • the temperature detecting module U1, the processing module U2, the decoding module U3 and the encoding module U4 are all provided by a highly integrated codec chip.
  • the digital headset includes a temperature detection module U1 and a processing module U2, the temperature detection module U1 is configured to detect a current temperature of a circuit board soldered with the temperature detection module U1; the processing module U2 is configured to format the current temperature The conversion process is performed, and the current temperature after the format conversion process is sent to the terminal connected to the earphone for on/off control.
  • the temperature detecting module U1 may be configured to detect an average temperature of all components on the circuit board soldered with the temperature detecting module U1. Since all components soldered on the same circuit board as the temperature detecting module U1 are connected by copper, the copper skin may be Heat conduction, if there is a short circuit or other abnormality on the board, the related components will heat up, and the heat generated will be transmitted to the electricity through the copper skin. All positions of the board, therefore, the temperature detection module U1 will detect the current temperature of the board in real time and transmit the current temperature to the processing module U2 in real time.
  • the temperature detecting module U1 needs to first detect the temperature range of the circuit board when the earphone is working normally.
  • the maximum value in the temperature range may be used as the reference temperature, wherein the reference temperature may be pre-stored in the processing module U2. It can also be sent to the terminal when the headset is connected to the terminal for the first time.
  • the processing module U2 compares the received current temperature with a pre-stored reference temperature, if the current temperature does not exceed the reference temperature, It can be considered that the components of the circuit board are normal, and therefore, no processing can be performed; if the current temperature exceeds the reference temperature, it can be considered that there is a short circuit or other abnormality on the circuit board, and finally the related components are heated, and therefore, the output to the terminal is made.
  • the control signal for the terminal to power off the earphone causes the digital earphone of the present invention to be powered off and stopped.
  • the temperature detecting module U1 may transmit the current temperature to the processing module U2 through the I2C bus, and the current temperature received by the processing module U2 is in the I2C format. If the digital earphone of the present invention transmits data through the USB interface, the processing module U2 needs to convert the current temperature of the I2C format to the current temperature of the USB format, and then send the current temperature after the format conversion processing to the connection with the earphone. The terminal is powered on and off.
  • the terminal After receiving the current temperature in the USB format, for example, the terminal compares the current temperature with the reference temperature. If the current temperature does not exceed the reference temperature, the components of the circuit board may be considered normal, and thus the terminal will be controlled.
  • the internal circuit continues to supply power to the digital earphone of the present invention, so that the digital earphone of the present invention works normally; if the current temperature exceeds the reference temperature, it can be considered that there is a short circuit or other abnormality caused by the abnormality of the related component on the circuit board, and therefore, the terminal is controlled internally.
  • the circuit stops supplying power to the digital earphone of the present invention, so that the digital earphone of the present invention is powered off and stops working.
  • the protection of the digital earphone of the present invention is realized, and the heat generation of the earphone caused by various abnormal operations is effectively prevented.
  • the temperature detecting module U1 can be provided by a digital temperature sensor.
  • the digital earphone of the invention further comprises a decoding module U3 and an encoding module U4, which are connected by the digital earphone
  • the received signal is the digital signal of the earpiece, and the earphone can only be driven by the analog signal. Therefore, the decoding module U3 is required to perform digital-to-analog conversion processing on the digital signal received by the digital earphone of the present invention to obtain an analog left channel signal and a right
  • the channel signal is correspondingly transmitted to the corresponding earpiece; since the voice signal collected by the microphone is an analog signal, the digital earphone of the present invention can only communicate with the connected terminal through the digital signal, therefore, the encoding module U4 is required to perform the analog signal collected by the microphone.
  • the analog to digital conversion process is performed to obtain a microphone digital signal transmitted to the terminal connected to the digital earphone.
  • the plug of the digital earphone of the present invention may be a USB plug J1, wherein the USB plug J1 has a ground pin GND, a power pin VCC, and a pair of differential pins D+, D-, and a voltage of the USB plug J1.
  • the pin VCC is powered by the digital earphone of the present invention
  • the ground pin GND is connected to the ground end of the digital earphone of the present invention
  • a pair of differential pins D+, D- are used for transmitting the digital signal of the earpiece and the digital signal of the microphone.
  • the USB plug J1 may be any one of a USB A type plug, a mini-USB plug, a micro-USB plug, and a Type-C plug.
  • the digital earphone may further include a voltage conversion module U5, a voltage conversion module U5 and a power switch S1.
  • the voltage conversion module U5 is configured to convert the voltage VCC1 provided by the power supply pin VCC of the earphone into the corresponding modules of the decoding module U3 and the supply voltages VCC2, VCC3 of the encoding module U4, for example
  • the power supply voltage of the temperature detecting module U1 and the processing module U2 is 5V
  • the power supply voltage of the decoding module U3 is 1.8V
  • the power supply voltage of the encoding module U4 is 3.3V. Then, the 5V voltage provided by the power supply pin VCC of the earphone is directly provided to the temperature detection.
  • voltage conversion module U5 converts the 5V voltage provided by the power supply pin VCC of the earphone to a supply voltage of 1.8V to the decoding module U3, and converts the 5V voltage provided by the power supply pin VCC of the earphone to the power supply of 3.3V.
  • the voltage is supplied to the encoding module U4.
  • the cost of the processing module U2, the decoding module U3 and the encoding module U4 is relatively high. Therefore, only the processing module U2, the decoding module U3 and the encoding module U4 can be temperature-detected to avoid damage during use. Since the temperature detecting module U1 detects the temperature of all components on the circuit board soldered with the temperature detecting module U1, in a specific embodiment of the present invention, the temperature detecting module U1, the processing module U2, and the decoding module can be Both U3 and encoding module U4 are soldered to the same board.
  • the temperature detecting module U1, the processing module U2, the decoding module U3 and the encoding module U4 are all provided by a highly integrated codec chip.

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

Abstract

本发明公开了一种数字耳机，包括温度检测模块(U1)、处理模块(U2)和连接在数字耳机的供电回路上的电源开关(S1)，温度检测模块(U1)被设置为检测焊接有该温度检测模块(U1)的电路板的当前温度；处理模块(U2)被设置为将当前温度与基准温度进行比对、并根据比对结果控制电源开关(S1)的状态。这样，能够保护数字耳机，有效防止各种异常操作导致的耳机发热烧毁。

Description

一种数字耳机 技术领域
本发明涉及耳机领域，更具体地，本发明涉及一种设置有温度传感器的数字耳机。
背景技术
现有的耳机电路保护方式主要是基于电信号的过压或者过流检测进行保护，当电流超过设定电流或者电压超过设定电压的时候，耳机自动断电，以保护耳机。
但是现有方案中利用过压或过流进行保护有如下缺点：只能对添加保护电路的电路进行保护；如果对多处电路进行保护，使用电子元件多，占用空间大。
由于耳机短路或者其他异常最终导致的相关元件发热，均以热能的形式表现在电路中。因此可以利用温度传感器能够有效保护各种异常操作导致的耳机发热烧毁。
发明内容
本发明的一个目的是提供一种防止耳机发热烧毁的新技术方案。
根据本发明的第一方面，提供了一种数字耳机，包括温度检测模块、处理模块和连接在所述数字耳机的供电回路上的电源开关，所述温度检测模块被设置为检测焊接有所述温度检测模块的电路板的当前温度；所述处理模块被设置为将所述当前温度与基准温度进行比对、并根据比对结果控制所述电源开关的状态。
可选的是，所述数字耳机还包括解码模块和编码模块，所述解码模块被设置为对所述数字耳机接收的听筒数字信号进行数模转换处理，得到模拟量的左声道信号和右声道信号对应传输至对应的听筒；所述编码模块被 设置为对麦克风采集的模拟信号进行模数转换处理，得到麦克数字信号传送至与所述数字耳机连接的终端。
可选的是，所述数字耳机还包括电压转换模块，所述电压转换模块和所述电源开关串联连接在所述数字耳机的供电回路上，所述电压转换模块被设置为将所述数字耳机的电源针脚提供的电压转换为所述温度检测模块、所述处理模块、所述解码模块和所述编码模块的供电电压提供至对应的模块。
可选的是，所述解码模块、所述编码模块、所述温度检测模块和所述处理模块均焊接在同一电路板上。
可选的是，所述解码模块、所述编码模块、所述温度检测模块和所述处理模块均由一编解码芯片提供。
根据本发明的第二方面，提供了一种数字耳机，包括温度检测模块和处理模块，所述温度检测模块被设置为检测焊接有所述温度检测模块的电路板的当前温度；所述处理模块被设置为对所述当前温度进行格式转换处理、并将格式转换处理后的当前温度发送至与所述数字耳机连接的终端进行通断电控制。
可选的是，所述数字耳机还包括解码模块和编码模块，所述解码模块被设置为对所述数字耳机接收的听筒数字信号进行数模转换处理，得到模拟量的左声道信号和右声道信号对应传输至对应的听筒；所述编码模块被设置为对麦克风采集的模拟信号进行模数转换处理，得到麦克数字信号传送至与所述数字耳机连接的终端。
可选的是，所述数字耳机还包括电压转换模块，所述电压转换模块被设置为将所述数字耳机的电源针脚提供的电压转换为所述温度检测模块、所述处理模块、所述解码模块和所述编码模块的供电电压提供至对应的模块。
可选的是，所述解码模块、所述编码模块、所述温度检测模块和所述处理模块均焊接在同一电路板上。
可选的是，所述解码模块、所述编码模块、所述温度检测模块和所述处理模块均由一编解码芯片提供。
本发明的发明人发现，在现有技术中，存在耳机电路保护方式只能对添加保护电路的电路进行保护、且占用空间大的问题。本发明的实施例中，通过检测焊接有温度检测模块的电路板的温度，将该温度与基准温度进行比对，根据比对结果进行耳机的通断电控制，能够保护耳机，有效防止各种异常操作导致的耳机发热烧毁。因此，本发明所要实现的技术任务或者所要解决的技术问题是本领域技术人员从未想到的或者没有预期到的，故本发明是一种新的技术方案。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1为根据本发明一种数字耳机的一种实施结构的方框原理图；
图2为根据本发明一种数字耳机的另一种实施结构的方框原理图；
图3为根据本发明一种数字耳机的第三种实施结构的方框原理图。
附图标记说明：
U1：温度检测模块；        U2：处理模块；
S1：电源开关；            U3：解码模块；
U4：编码模块；            U5：电压转换模块；
J1：USB插头；             D+、D-：USB插头的差分针脚；
VCC：USB插头的电源针脚；  VCC1、VCC2、VCC3：电压；
MIC：麦克风；             LE：左耳听筒；
RE：右耳听筒；            GND：USB插头的接地针脚。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
为了解决现有技术中存在的耳机电路保护方式只能对添加保护电路的电路进行保护、且占用空间大的问题，提供了一种数字耳机，在一方面，该数字耳机包括温度检测模块U1、处理模块U2和连接在数字耳机的供电回路上的电源开关S1，温度检测模块U1被设置为检测焊接有温度检测模块的电路板的当前温度；处理模块U2被设置为将该当前温度与基准温度进行比对、并根据比对结果控制电源开关S1的状态。
上述电源开关S1连接在数字耳机的供电回路上，当电源开关S1闭合时，该数字耳机通电、正常工作，当电源开关S1断开时，该数字耳机断电、停止工作。该电源开关S1具体为可控开关，处理模块U2控制该电源开关S1的开关状态。该电源开关S1可以由三极管、MOS管等分立元器件实现，例如具体可以为N型三极管、P型三极管、N沟道MOS管或者P沟道MOS管等。
其中，温度检测模块U1可以是检测焊接有该温度检测模块U1的电路板上所有元件的平均温度，由于与该温度检测模块U1焊接在同一电路板上的所有元件通过铜皮连接，铜皮可以导热，如果该电路板上存在短路或者其他异常最终导致的相关元件发热，产生的热量将会通过铜皮传导到该电路板的所有位置上，因此，温度检测模块U1将会实时检测到该电路板的当前温度，并将当前温度实时传送至处理模块U2。
进一步地，温度检测模块U1需先检测耳机正常工作时该电路板的温 度范围，例如可以将该温度范围内的最大值作为基准温度，预先保存在处理模块U2中。
处理模块U2将接收到的当前温度与预先存储的基准温度进行比对，如果当前温度不超过基准温度，则可以认为该电路板各元件正常，因此，输出控制电源开关S1闭合的控制信号，例如可以是高电平，使得本发明数字耳机上电、正常工作；如果当前温度超过基准温度，则可以认为该电路板上存在短路或者其他异常最终导致的相关元件发热，因此，输出控制电源开关S1断开的控制信号，例如可以是低电平，使得本发明数字耳机断电、停止工作，这样，就实现了对本发明数字耳机的保护，有效防止各种异常操作导致的耳机发热烧毁。
在电源开关S1断开时，温度检测模块U1和处理模块U2仍正常工作，即温度检测模块U1检测当前温度，处理模块U2检测当前温度是否超过基准温度，以实时控制电源开关S1的状态，保证该数字耳机在温度降低至小于基准温度后能够正常使用。
具体的，由于本发明数字耳机传输的是数字信号，因此，温度检测模块U1可以由一数字温度传感器提供。
本发明数字耳机还包括解码模块U3和编码模块U4，由于数字耳机接收到的信号为听筒数字信号，而耳机听筒只能通过模拟信号驱动，因此，需解码模块U3对本发明数字耳机接收的听筒数字信号进行数模转换处理，得到模拟量的左声道信号和右声道信号，并将左声道信号传输至左耳听筒LE，将右声道信号传输至右耳听筒RE；由于麦克风MIC采集的语音信号为模拟信号，而本发明数字耳机只能够通过数字信号与连接的终端进行通信，因此，需编码模块U4对麦克风采集的模拟信号进行模数转换处理，得到麦克数字信号传送至与该数字耳机连接的终端。
在本发明的一个具体实施例中，本发明数字耳机的插头可以为USB插头J1，其中，USB插头J1具有接地针脚GND、电源针脚VCC和一对差分针脚D+、D-，USB插头J1的电压针脚VCC为本发明数字耳机供电，接地针脚GND与本发明数字耳机的接地端连接，一对差分针脚D+、D-用于传输听筒数字信号和麦克数字信号。其中，USB插头J1可以为USB A型插头、mini-USB 插头、micro-USB插头和Type-C插头中的任意一种。
由于USB插头J1的电源针脚VCC提供的电压为5V，而解码模块U3和编码模块U4的供电电压不一定为5V，因此，数字耳机还可以包括电压转换模块U5，电压转换模块U5和电源开关S1串联连接在该数字耳机的供电回路上，电压转换模块U5被设置为将耳机的电源针脚VCC提供的电压VCC1转换为解码模块U3和编码模块U4的供电电压VCC2、VCC3提供至对应的模块，例如，温度检测模块U1和处理模块U2的供电电压为5V，解码模块U3的供电电压为1.8V、编码模块U4供电电压为3.3V，那么，耳机的电源针脚VCC提供的5V电压直接提供至温度检测模块U1和处理模块U2，电压转换模块U5将耳机的电源针脚VCC提供的5V电压转换为1.8V的供电电压提供至解码模块U3，将耳机的电源针脚VCC提供的5V电压转换为3.3V的供电电压提供至编码模块U4。
对于高端的数字耳机，处理模块U2、解码模块U3和编码模块U4的成本较高，因此，可以只对处理模块U2、解码模块U3和编码模块U4进行温度检测，避免其在使用过程中出现损坏，由于温度检测模块U1检测的是焊接有该温度检测模块U1的电路板上所有元件的温度，因此，在本发明的一个具体实施例中，可以将温度检测模块U1、处理模块U2、解码模块U3和编码模块U4均焊接在同一电路板上。
为了进一步减小电路占用空间，在本发明的一个具体实施例中，温度检测模块U1、处理模块U2、解码模块U3和编码模块U4均由一高度集成的编解码芯片提供。
在另一方面，该数字耳机包括温度检测模块U1和处理模块U2，温度检测模块U1被设置为检测焊接有温度检测模块U1的电路板的当前温度；处理模块U2被设置为对当前温度进行格式转换处理、并将格式转换处理后的当前温度发送至与耳机连接的终端进行通断电控制。
其中，温度检测模块U1可以是检测焊接有该温度检测模块U1的电路板上所有元件的平均温度，由于与该温度检测模块U1焊接在同一电路板上的所有元件通过铜皮连接，铜皮可以导热，如果该电路板上存在短路或者其他异常最终导致的相关元件发热，产生的热量将会通过铜皮传导到该电 路板的所有位置上，因此，温度检测模块U1将会实时检测到该电路板的当前温度，并将当前温度实时传送至处理模块U2。
进一步地，温度检测模块U1需先检测耳机正常工作时该电路板的温度范围，例如可以将该温度范围内的最大值作为基准温度，其中，该基准温度可以是预先保存在处理模块U2中，也可以是在耳机第一次与终端连接时发送至终端。
如果该基准温度是预先保存在处理模块U2中，则如上述实施例中所述，处理模块U2将接收到的当前温度与预先存储的基准温度进行比对，如果当前温度不超过基准温度，则可以认为该电路板各元件正常，因此，可以是不做任何处理；如果当前温度超过基准温度，则可以认为该电路板上存在短路或者其他异常最终导致的相关元件发热，因此，向终端输出使得终端对该耳机断电的控制信号，使得本发明数字耳机断电、停止工作。
在该基准温度在耳机第一次与终端连接时发送至终端的情况下，温度检测模块U1可以是通过I2C总线将当前温度传送至处理模块U2，处理模块U2接收到的当前温度就是I2C格式的，如果本发明数字耳机是通过USB接口进行数据传输的，那么，处理模块U2就需要将I2C格式的当前温度转换为USB格式的当前温度，再将格式转换处理后的当前温度发送至与耳机连接的终端进行通断电控制。
具体的，终端接收到例如是USB格式的当前温度后，将该当前温度与基准温度进行比对，如果当前温度不超过基准温度，则可以认为该电路板各元件正常，因此，将会控制终端内部电路继续对本发明数字耳机供电，使得本发明数字耳机正常工作；如果当前温度超过基准温度，则可以认为该电路板上存在短路或者其他异常最终导致的相关元件发热，因此，将会控制终端内部电路停止对本发明数字耳机供电，使得本发明数字耳机断电、停止工作，这样，就实现了对本发明数字耳机的保护，有效防止各种异常操作导致的耳机发热烧毁。
具体的，由于本发明数字耳机传输的是数字信号，因此，温度检测模块U1可以由一数字温度传感器提供。
本发明数字耳机还包括解码模块U3和编码模块U4，由于数字耳机接 收到的信号为听筒数字信号，而耳机听筒只能通过模拟信号驱动，因此，需解码模块U3对本发明数字耳机接收的听筒数字信号进行数模转换处理，得到模拟量的左声道信号和右声道信号对应传输至对应的听筒；由于麦克风采集的语音信号为模拟信号，而本发明数字耳机只能够通过数字信号与连接的终端进行通信，因此，需编码模块U4对麦克风采集的模拟信号进行模数转换处理，得到麦克数字信号传送至与该数字耳机连接的终端。
在本发明的一个具体实施例中，本发明数字耳机的插头可以为USB插头J1，其中，USB插头J1具有接地针脚GND、电源针脚VCC和一对差分针脚D+、D-，USB插头J1的电压针脚VCC为本发明数字耳机供电，接地针脚GND与本发明数字耳机的接地端连接，一对差分针脚D+、D-用于传输听筒数字信号和麦克数字信号。其中，USB插头J1可以为USB A型插头、mini-USB插头、micro-USB插头和Type-C插头中的任意一种。
由于USB插头J1的电源针脚VCC提供的电压为5V，而解码模块U3和编码模块U4的供电电压不一定为5V，因此，数字耳机还可以包括电压转换模块U5，电压转换模块U5和电源开关S1串联连接在该数字耳机的供电回路上，电压转换模块U5被设置为将耳机的电源针脚VCC提供的电压VCC1转换为解码模块U3和编码模块U4的供电电压VCC2、VCC3提供至对应的模块，例如，温度检测模块U1和处理模块U2的供电电压为5V，解码模块U3的供电电压为1.8V、编码模块U4供电电压为3.3V，那么，耳机的电源针脚VCC提供的5V电压直接提供至温度检测模块U1和处理模块U2，电压转换模块U5将耳机的电源针脚VCC提供的5V电压转换为1.8V的供电电压提供至解码模块U3，将耳机的电源针脚VCC提供的5V电压转换为3.3V的供电电压提供至编码模块U4。
对于高端的数字耳机，处理模块U2、解码模块U3和编码模块U4的成本较高，因此，可以只对处理模块U2、解码模块U3和编码模块U4进行温度检测，避免其在使用过程中出现损坏，由于温度检测模块U1检测的是焊接有该温度检测模块U1的电路板上所有元件的温度，因此，在本发明的一个具体实施例中，可以将温度检测模块U1、处理模块U2、解码模块U3和编码模块U4均焊接在同一电路板上。
为了进一步减小电路占用空间，在本发明的一个具体实施例中，温度检测模块U1、处理模块U2、解码模块U3和编码模块U4均由一高度集成的编解码芯片提供。
上述各实施例主要重点描述与其他实施例的不同之处，但本领域技术人员应当清楚的是，上述各实施例可以根据需要单独使用或者相互结合使用。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (10)

  1. 一种数字耳机，其特征在于，包括温度检测模块(U1)、处理模块(U2)和连接在所述数字耳机的供电回路上的电源开关(S1)，所述温度检测模块(U1)被设置为检测焊接有所述温度检测模块(U1)的电路板的当前温度；所述处理模块(U2)被设置为将所述当前温度与基准温度进行比对、并根据比对结果控制所述电源开关(S1)的状态。
  2. 根据权利要求1所述的数字耳机，其特征在于，所述数字耳机还包括解码模块(U3)和编码模块(U4)，所述解码模块(U3)被设置为对所述数字耳机接收的听筒数字信号进行数模转换处理，得到模拟量的左声道信号和右声道信号对应传输至对应的听筒；所述编码模块(U4)被设置为对麦克风采集的模拟信号进行模数转换处理，得到麦克数字信号传送至与所述数字耳机连接的终端。
  3. 根据权利要求2所述的数字耳机，其特征在于，所述数字耳机还包括电压转换模块(U5)，所述电压转换模块(U5)和所述电源开关(S1)串联连接在所述数字耳机的供电回路上，所述电压转换模块(U5)被设置为将所述数字耳机的电源针脚提供的电压转换为所述温度检测模块(U1)、所述处理模块(U2)、所述解码模块(U3)和所述编码模块(U4)的供电电压提供至对应的模块。
  4. 根据权利要求2或3所述的数字耳机，其特征在于，所述温度检测模块(U1)、所述处理模块(U2)、所述解码模块(U3)和所述编码模块(U4)均焊接在同一电路板上。
  5. 根据权利要求2-4中任一项所述的数字耳机，其特征在于，所述温度检测模块(U1)、所述处理模块(U2)、所述解码模块(U3)和所述编码模块(U4)均由一编解码芯片提供。
  6. 一种数字耳机，其特征在于，包括温度检测模块(U1)和处理模块(U2)，所述温度检测模块(U1)被设置为检测焊接有所述温度检测模块(U1)的电路板的当前温度；所述处理模块(U2)被设置为对所述当前温 度进行格式转换处理、并将格式转换处理后的当前温度发送至与所述数字耳机连接的终端进行通断电控制。
  7. 根据权利要求6所述的数字耳机，其特征在于，所述数字耳机还包括解码模块(U3)和编码模块(U4)，所述解码模块(U3)被设置为对所述数字耳机接收的听筒数字信号进行数模转换处理，得到模拟量的左声道信号和右声道信号对应传输至对应的听筒；所述编码模块(U4)被设置为对麦克风采集的模拟信号进行模数转换处理，得到麦克数字信号传送至与所述数字耳机连接的终端。
  8. 根据权利要求7所述的数字耳机，其特征在于，所述数字耳机还包括电压转换模块(U5)，所述电压转换模块(U5)被设置为将所述数字耳机的电源针脚提供的电压转换为所述温度检测模块(U1)、所述处理模块(U2)、所述解码模块(U3)和所述编码模块(U4)的供电电压提供至对应的模块。
  9. 根据权利要求7或8所述的数字耳机，其特征在于，所述温度检测模块(U1)、所述处理模块(U2)、所述解码模块(U3)和所述编码模块(U4)均焊接在同一电路板上。
  10. 根据权利要求7-9中任一项所述的数字耳机，其特征在于，所述温度检测模块(U1)、所述处理模块(U2)、所述解码模块(U3)和所述编码模块(U4)均由一编解码芯片提供。
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