WO2018107673A1 - 一种调频发射电路及调频发射方法 - Google Patents

一种调频发射电路及调频发射方法 Download PDF

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Publication number
WO2018107673A1
WO2018107673A1 PCT/CN2017/087149 CN2017087149W WO2018107673A1 WO 2018107673 A1 WO2018107673 A1 WO 2018107673A1 CN 2017087149 W CN2017087149 W CN 2017087149W WO 2018107673 A1 WO2018107673 A1 WO 2018107673A1
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Prior art keywords
transmitting
frequency
electrically connected
circuit
audio
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PCT/CN2017/087149
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English (en)
French (fr)
Inventor
黄新
陈辉萍
张文彬
汪序凯
朱荆莲
彭灵
俞伟良
钟城广
肖胜男
王炳锋
黄睿
陈海裕
黄广亮
陈进银
张燕
唐志元
王岩
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深圳佳比泰智能照明股份有限公司
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Publication of WO2018107673A1 publication Critical patent/WO2018107673A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion

Definitions

  • the present invention relates to the field of frequency modulation communication technologies, and in particular, to an FM transmission circuit and a frequency modulation transmission method.
  • the object of the present invention is to provide a frequency modulation transmitting circuit and a frequency modulation transmitting method, which solve the problem that the prior art cannot transmit audio signals through frequency modulation, and the anti-interference ability of the remote control technology is weak, the networking is inconvenient, and the reliability is general.
  • the present invention provides a frequency modulation transmitting circuit, including:
  • An FM transmitting antenna for transmitting a frequency modulated signal
  • the FM transmitting chip is electrically connected to the signal amplifying circuit
  • a transmit frequency encoding switch for adjusting a transmission frequency point, electrically connected to the transmitting microprocessor
  • An audio signal socket for plugging in an audio interface electrically connected to the FM transmitting chip
  • An audio Bluetooth socket for plugging in the Bluetooth module is electrically connected to the FM transmitter chip.
  • the method further includes:
  • the power supply device is electrically connected to the signal amplifying circuit, the FM transmitting chip, the audio Bluetooth socket, and the transmitting microprocessor.
  • the power supply device includes:
  • a power supply circuit for providing a first voltage, electrically connected to the signal amplifying circuit
  • a voltage stabilizing circuit for accessing the first voltage to output a second voltage, wherein an input end is connected to the power supply circuit, and an output end thereof is electrically connected to the FM transmitting chip, the audio Bluetooth socket, and the Transmit the microprocessor.
  • the transmitting frequency encoding switch includes three sub-switches connected in parallel to switch the transmitting frequency of the FM transmitting antenna.
  • the method further includes:
  • a transmitting LED lamp for displaying a transmitting state of the FM signal is electrically connected to the transmitting microprocessor.
  • the signal amplifying circuit comprises:
  • a second transistor the base of which is electrically connected to the collector of the first transistor
  • the filter circuit has one end electrically connected to the collector of the second transistor and the other end electrically connected to the FM transmitting antenna.
  • the method further includes:
  • the socket driving circuit has one end electrically connected to the FM transmitting chip, and the other end electrically connected to the audio signal socket and the audio Bluetooth socket.
  • an FM transmission method which provides the FM transmission circuit as described above, including the steps of:
  • the step of controlling the transmission frequency of the FM transmitting antenna by the transmitting microprocessor and the transmitting frequency encoding switch comprises the following sub-steps:
  • the transmission frequency point is determined according to the states of the three sub-switches.
  • the method further includes the steps of:
  • the FM transmitter chip, the audio Bluetooth socket, and the transmitting microprocessor are powered by a second voltage.
  • the beneficial effect of the present invention is that by setting different frequency points to transmit audio signals by frequency modulation, not only the anti-interference ability of the remote control technology is improved, but also the reliability of the smart home communication is improved; and the FM transmission circuit is applied in the smart home. Improve people's life experience and enrich the smart home control function.
  • FIG. 1 is a block diagram of a frequency modulation transmitting circuit provided by the present invention.
  • FIG. 2 is a schematic structural diagram of an FM transmitting antenna, a signal amplifying circuit, and a power supply device according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an FM transmitting chip, a transmitting microprocessor, a transmitting frequency encoding switch, an audio signal socket, and an audio Bluetooth socket according to an embodiment of the present invention.
  • the invention provides an FM transmitting circuit 100 and an FM transmitting method.
  • the purpose of the invention is to improve the anti-interference ability of the remote control technology by setting different frequency points to transmit the audio signal by frequency modulation, and also improve the reliability of the smart home communication; FM transmitter circuit is applied in smart home to improve people's lives The live experience enriches the smart home control function.
  • FIG. 1 is a block diagram of a frequency modulation transmitting circuit 100 according to the present invention.
  • the FM transmitting circuit 100 includes an FM transmitting antenna 1, a signal amplifying circuit 2, an FM transmitting chip 3, a transmitting microprocessor 4, and a transmitting frequency.
  • the FM transmitting antenna 1 is used for transmitting a frequency modulated signal; the frequency range of the transmission is 88 MHz - 110 MHz.
  • the signal amplifying circuit 2 is electrically connected to the FM transmitting antenna 1;
  • FIG. 2 is a schematic structural diagram of the FM transmitting antenna 1, the signal amplifying circuit 2 and the power supply device 8 according to an embodiment of the present invention, and the signal amplifying circuit 2
  • the first transistor 21, the second transistor 22 and the filter circuit 23 are further included, and the inductor L10, the inductor L11, the capacitor C26, the capacitor C4, the capacitor C5, the inductor L6, the capacitor C3, the resistor R25, the resistor R1, and the capacitor C38. , inductor L14 and inductor L1.
  • the filter circuit 23 includes a capacitor C36, a capacitor C37, a capacitor C33, a capacitor C35, a capacitor C27, an inductor L12, and an inductor L13.
  • One end of the capacitor C37 is connected to the frequency modulation transmitting circuit 100, and the other end of the capacitor C37 is connected to one end of the capacitor C36 and the inductor.
  • the capacitor C27 is connected to the collector of the second transistor 22, one end of the inductor L11 and one end of the capacitor C26, and the other end of the inductor L11 is connected to one end of the inductor L10, the other end of the capacitor C26, one end of the capacitor C4, and the capacitor C5.
  • One end and one end of the inductor L6, the base of the second transistor 22 is connected to one end of the resistor R25 and one end of the capacitor C3, and the other end of the capacitor C3 is connected to the other end of the inductor L6 and the collector of the first transistor 21.
  • the base of the first transistor 21 is connected to one end of the capacitor C1 and one end of the resistor R1.
  • the other end of the capacitor C1 is connected to one end of the inductor L1 and the interface 201.
  • the other end of the resistor R1 is connected to one end of the capacitor C38 and the inductor.
  • the other end of inductor L14 is connected to interface 202, which is used to access the +3.6V voltage.
  • the FM transmitter chip 3 is electrically connected to the signal amplifying circuit 2; see FIG. 3, FIG. 3 is a frequency modulation transmitting chip 3, a transmitting microprocessor 4, and a transmitting frequency encoding switch 5 according to an embodiment of the present invention.
  • the FM transmitter chip 3 is U4, and the port RFO of U4 is connected to the interface 201.
  • the port VIO and the port VDD are both connected to one end of the capacitor C6, one end of the capacitor C7 and one end of the resistor R3, and the other end of the resistor R3 is connected to the interface 202. Connect to +3.6V voltage.
  • the transmitting microprocessor 4 is electrically connected to the FM transmitting chip 3; the transmitting microprocessor 4 is MCU1, the port 5 and the port 6 of the MCU1 are respectively connected to the port SDA and the port SCL of the U4, and the port 1 of the MCU1 is connected to the capacitor C2 One end, one end of the capacitor C14 and one end of the resistor R4, the other end of the resistor R4 is connected to the interface 202 to access a voltage of +3.6V.
  • the transmitting frequency encoding switch 5 is configured to adjust a transmitting frequency point and is electrically connected to the transmitting microprocessor 4; the transmitting frequency encoding switch 5 includes three sub-switches connected in parallel to switch the transmitting frequency of the FM transmitting antenna 1 .
  • the three sub-switches are sub-switch A, sub-switch B and sub-switch C, one end of sub-switch A, sub-switch B and sub-switch C are grounded, and the other end of sub-switch A is connected to port 3 of MCU1 through resistor R2.
  • the other end of the sub-switch B is connected to the port 4 of the MCU 2 via a resistor R19, and the other end of the sub-switch C is connected to the port 7 of the MCU 2 via a resistor R22.
  • the audio signal socket 6 is used for plugging in an audio interface, and is electrically connected to the FM transmitting chip 3.
  • the FM transmitting circuit 100 further includes a socket driving circuit 9 , one end of which is electrically connected to the FM transmitting chip 3 , The other end is electrically connected to the audio signal socket 6 and the audio Bluetooth socket 7, that is, the socket driving circuit 9 is connected between the audio signal interface and the FM transmitting chip 3.
  • the socket driving circuit 9 includes a capacitor C20, a capacitor C19, a resistor R9, a resistor R11, an inductor L8, an inductor L9, a resistor R8, a resistor R10, a capacitor C17, a capacitor C18, a resistor R6, and a resistor R7.
  • the audio signal socket 6 is an AUX-IN jack, that is, an audio input interface, for receiving the effect sound processed by the external effector, or serving as an additional input channel.
  • the audio signal socket 6 includes a first end 61 and a second end 62.
  • the first end 61 is connected to the port ARI of U4 through a capacitor C20, a resistor R11, an inductor L8, a capacitor C17 and a resistor R6, and the resistor R10 is connected to the inductor L8 and the capacitor.
  • the second end 62 is connected to the port ALI of U4 through the capacitor C19, the resistor R9, the inductor L9, the capacitor C18 and the resistor R7, and the resistor R8 is connected between the inductor L9 and the capacitor C18.
  • the audio Bluetooth socket 7 is used for plugging in a Bluetooth module and is electrically connected to the FM transmitting chip 3.
  • Audio Bluetooth socket 7 is BLE2, including port AL-I, port AR-I, port GND and for accessing +3.6V
  • the voltage power port, the port AL-I is sequentially connected to the first end 61 of the audio signal socket 6 through the capacitor C39 and the resistor R13
  • the port AR-I is sequentially connected to the second end 62 of the audio signal socket 6 through the capacitor C40 and the resistor R24.
  • One ends of the resistor R23 and the resistor R26 are respectively connected to the first end 61 and the second end 62 of the audio signal socket 6, and the other ends of the resistor R23 and the resistor R26 are grounded.
  • the audio input of the FM transmitting circuit 100 has two channels: a wired input (ie, input through the audio signal socket 6) and a wireless input (ie, input through the audio Bluetooth socket 7), and the wired input can pass the TV through the AUX interface on the transmitter.
  • the audio signal of the machine, CD player or other device is connected; the wireless input can transmit the audio signal played by the Bluetooth paired mobile phone through the Bluetooth connection mode, and the plurality of receiving units can play the sound, thereby realizing the interaction between the light and the music. It can be installed indoors from the audio, such as next to the TV set.
  • the FM transmitting circuit 100 By setting the FM transmitting circuit 100, the sound of the TV set is sent to the plurality of receiving units through the FM transmitting circuit 100, and the plurality of receiving units can simultaneously sound.
  • the FM transmitting circuit 100 further includes a power supply device 8 electrically connected to the signal amplifying circuit 2, the FM transmitting chip 3, the audio Bluetooth socket 7, and the transmitting microprocessor 4.
  • the power supply device 8 includes a power supply circuit 81 and a voltage stabilization circuit 82.
  • the power supply circuit 81 is configured to provide a first voltage and is electrically connected to the signal amplifying circuit 2.
  • the voltage stabilizing circuit 82 is configured to access the first voltage to output a second voltage, the input end of which is connected to the power supply circuit 81, and the output end thereof is electrically connected to the FM transmitting chip 3 and the audio Bluetooth socket 7 And the transmitting microprocessor 4.
  • the second voltage is preferably +3.6V.
  • the FM transmitting circuit 100 further includes a transmitting LED lamp TX-LED for displaying a transmission state of the FM signal, and is electrically connected to the transmitting microprocessor 4.
  • the anode of the transmitting LED lamp TX-LED is connected to port 2 of the MCU 1 via a resistor R5.
  • an FM transmission method which employs the FM transmission circuit 100 as described above, including steps S1-S5:
  • the transmitting frequency of the FM transmitting antenna 1 is controlled by the transmitting microprocessor 4 and the transmitting frequency encoding switch 5; the step S3 includes sub-steps S31-S32:
  • F1 F2 F3 F4 F5 F6 F7 F8 A 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 C 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
  • the FM signal is amplified by the signal amplifying circuit 2;
  • the amplified FM signal is transmitted by the FM transmitting antenna 1 according to the transmitting frequency point.
  • the FM transmission method further includes steps S6-S7:
  • the one or operations may constitute computer readable instructions stored on one or a computer readable medium that, when executed by an electronic device, cause the computing device to perform the operations.
  • the order in which some or all of the operations are described should not be construed as implying that the operations must be sequential. Those skilled in the art will appreciate alternative rankings that have the benefit of this specification. Moreover, it should be understood that not all operations must be present in every embodiment provided herein.
  • the word "preferred” as used herein is intended to serve as an example, instance, or illustration. Any aspect or design described as “preferred” by the text is not necessarily to be construed as being more advantageous than other aspects or designs. Instead, the use of the word “preferred” is intended to present a concept in a specific manner.
  • the word “or” is intended to mean the inclusion of “or” rather than the exclusion of “or”. That is, unless otherwise specified or clear from the context, "X employs A or B” means naturally including any one of the permutations. That is, if X uses A; X uses B; or X uses both A and B, then "X uses A or B" is satisfied in any of the foregoing examples.
  • Each functional unit in the embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
  • the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Abstract

本发明公开了一种调频发射电路及调频发射方法，该电路包括：用于发射调频信号的调频发射天线；信号放大电路，电性连接于调频发射天线；调频发射芯片，电性连接于信号放大电路；发射微处理器，电性连接于调频发射芯片；用于调节发射频点的发射频率编码开关，电性连接于发射微处理器；用于插接音频接口的音频信号插座，电性连接于调频发射芯片；用于插接蓝牙模块的音频蓝牙插座，电性连接于调频发射芯片。实施本发明的有益效果是，通过设置不同频点以调频发射音频信号，不仅提高了遥控技术的抗干扰能力，还提高了智能家居通信的可靠性；将调频发射电路应用在智能家居中，提高人们的生活体验，丰富了智能家居控制功能。

Description

一种调频发射电路及调频发射方法 技术领域
本发明涉及调频通信技术领域，尤其涉及一种调频发射电路及调频发射方法。
背景技术
随着音乐光源技术的普及，越来越多的音乐光源进入到人们的生活中。目前通过智能家居遥控音乐光源的技术较为成熟，但是这种遥控技术抗干扰能力弱，组网不便，可靠性一般。而且现有技术中，难以实现多个音乐光源之间的组网功能，更没有通过调频发送音频信号的技术方案。
发明内容
本发明的目的在于提供一种调频发射电路及调频发射方法，解决现有技术中智能家居中无法通过调频发送音频信号且遥控技术抗干扰能力弱，组网不便，可靠性一般的问题。
本发明的技术方案实现如下：
一方面，本发明提供一种调频发射电路，包括：
用于发射调频信号的调频发射天线；
信号放大电路，电性连接于所述调频发射天线；
调频发射芯片，电性连接于所述信号放大电路；
发射微处理器，电性连接于所述调频发射芯片；
用于调节发射频点的发射频率编码开关，电性连接于所述发射微处理器；
用于插接音频接口的音频信号插座，电性连接于所述调频发射芯片；
用于插接蓝牙模块的音频蓝牙插座，电性连接于所述调频发射芯片。
在本发明所述的调频发射电路中，还包括：
供电装置，电性连接于所述信号放大电路、所述调频发射芯片、所述音频蓝牙插座及所述发射微处理器。
在本发明所述的调频发射电路中，所述供电装置包括：
用于提供第一电压的供电电路，电性连接于所述信号放大电路；
用于接入所述第一电压以输出第二电压的稳压电路，其输入端连接于所述供电电路，其输出端电性连接于所述调频发射芯片、所述音频蓝牙插座及所述发射微处理器。
在本发明所述的调频发射电路中，所述发射频率编码开关包括三个相互并联的子开关，以切换所述调频发射天线的发射频点。
在本发明所述的调频发射电路中，还包括：
用于显示调频信号发射状态的发射LED灯，电性连接于所述发射微处理器。
在本发明所述的调频发射电路中，所述信号放大电路包括：
第一三极管，其基级电性连接于所述调频发射芯片；
第二三极管，其基级电性连接于所述第一三极管的集电极；
滤波电路，其一端电性连接于所述第二三极管的集电极，另一端电性连接于所述调频发射天线。
在本发明所述的调频发射电路中，还包括：
插座驱动电路，其一端电性连接于所述调频发射芯片，另一端电性连接于所述音频信号插座以及所述音频蓝牙插座。
另一方面，提供一种调频发射方法，提供如上所述的调频发射电路，包括步骤：
通过所述音频蓝牙插座插接蓝牙模块或通过所述音频信号插座插接音频接口接入音频信号；
通过所述调频发射芯片将所述音频信号转换为调频信号；
通过所述发射微处理器及所述发射频率编码开关控制所述调频发射天线的发射频点；
通过所述信号放大电路对所述调频信号放大；
通过所述调频发射天线按照所述发射频点发射经放大后的调频信号。
在本发明所述的调频发射方法中，所述通过所述发射微处理器及所述发射频率编码开关控制所述调频发射天线的发射频点的步骤包括以下子步骤：
通过所述发射微处理器获取所述发射频率编码开关的三个子开关的状态；
依据三个所述子开关的状态确定所述发射频点。
在本发明所述的调频发射方法中，还包括步骤：
通过第一电压为所述信号放大电路供电；
通过第二电压为所述调频发射芯片、所述音频蓝牙插座及所述发射微处理器供电。
因此，本发明的有益效果是，通过设置不同频点以调频发射音频信号，不仅提高了遥控技术的抗干扰能力，还提高了智能家居通信的可靠性；将调频发射电路应用在智能家居中，提高人们的生活体验，丰富了智能家居控制功能。
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为本发明提供的一种调频发射电路的模块框图；
图2为本发明一实施例提供的调频发射天线、信号放大电路及供电装置的结构示意图；
图3为本发明一实施例提供的调频发射芯片、发射微处理器、发射频率编码开关、音频信号插座及音频蓝牙插座的结构示意图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，以下将对照附图详细说明本发明的具体实施方式。应当理解，以下说明仅为本发明实施例的具体阐述，不应以此限制本发明的保护范围。
本发明提供一种调频发射电路100及调频发射方法，其目的在于，通过设置不同频点以调频发射音频信号，不仅提高了遥控技术的抗干扰能力，还提高了智能家居通信的可靠性；将调频发射电路应用在智能家居中，提高人们的生 活体验，丰富了智能家居控制功能。
参见图1，图1为本发明提供的一种调频发射电路100的模块框图，该调频发射电路100包括调频发射天线1、信号放大电路2、调频发射芯片3、发射微处理器4、发射频率编码开关5、音频信号插座6以及音频蓝牙插座7。
调频发射天线1用于发射调频信号；其发射的调频范围为88MHz-110MHz。
信号放大电路2电性连接于所述调频发射天线1；参加图2，图2为本发明一实施例提供的调频发射天线1、信号放大电路2及供电装置8的结构示意图，信号放大电路2包括第一三极管21、第二三极管22及滤波电路23，还包括电感L10、电感L11、电容C26、电容C4、电容C5、电感L6、电容C3、电阻R25、电阻R1、电容C38、电感L14及电感L1。
滤波电路23的一端电性连接于所述第二三极管22的集电极，另一端电性连接于所述调频发射天线1。该滤波电路23包括电容C36、电容C37、电容C33、电容C35、电容C27、电感L12及电感L13，电容C37的一端连接至调频发射电路100，电容C37的另一端连接至电容C36的一端及电感L13的一端，电感L13的另一端连接至电感L12的一端，电容C35连接至电感L12与电感L13之间，电感L12的另一端连接至C27的一端，电容C33连接至电感L12于电容C12之间。
电容C27连接至第二三极管22的集电极、电感L11的一端及电容C26的一端，电感L11的另一端连接至电感L10的一端、电容C26的另一端、电容C4的一端、电容C5的一端以及电感L6的一端，第二三极管22的基级连接至电阻R25的一端及电容C3的一端，电容C3的另一端连接至电感L6的另一端及第一三极管21的集电极，第一三极管21的基级连接至电容C1的一端及电阻R1的一端，电容C1的另一端连接至电感L1的一端及接口201，电阻R1的另一端连接于电容C38的一端及电感L14的一端，电感L14的另一端连接至接口202，接口202用于接入+3.6V电压。
调频发射芯片3电性连接于所述信号放大电路2；参见图3，图3为本发明一实施例提供的调频发射芯片3、发射微处理器4、发射频率编码开关5、 音频信号插座6及音频蓝牙插座7的结构示意图。调频发射芯片3为U4，U4的端口RFO连接至接口201，其端口VIO及端口VDD均连接至电容C6的一端、电容C7的一端及电阻R3的一端，电阻R3的另一端连接至接口202以接入+3.6V电压。
发射微处理器4电性连接于所述调频发射芯片3；发射微处理器4为MCU1，MCU1的端口5及端口6分别连接至U4的端口SDA及端口SCL，MCU1的端口1连接至电容C2的一端、电容C14的一端及电阻R4的一端，电阻R4的另一端连接至接口202以接入+3.6V电压。
发射频率编码开关5用于调节发射频点，电性连接于所述发射微处理器4；发射频率编码开关5包括三个相互并联的子开关，以切换所述调频发射天线1的发射频点。这三个子开关分别为子开关A、子开关B及子开关C，子开关A、子开关B及子开关C的一端均接地，子开关A的另一端通过电阻R2连接至MCU1的端口3，子开关B的另一端通过电阻R19连接至MCU2的端口4，子开关C的另一端通过电阻R22连接至MCU2的端口7。
音频信号插座6用于插接音频接口，电性连接于所述调频发射芯片3；优选的，该调频发射电路100还包括插座驱动电路9，其一端电性连接于所述调频发射芯片3，另一端电性连接于所述音频信号插座6以及所述音频蓝牙插座7，即插座驱动电路9连接于音频信号接口及调频发射芯片3之间。参见图3，插座驱动电路9包括电容C20、电容C19、电阻R9、电阻R11、电感L8、电感L9、电阻R8、电阻R10、电容C17、电容C18、电阻R6及电阻R7。音频信号插座6为AUX-IN插口，即音频输入接口，用于接收外接效果器所处理出的效果声讯，或是充当额外的输入声道。音频信号插座6包括第一端61及第二端62，第一端61依次通过电容C20、电阻R11、电感L8、电容C17及电阻R6连接至U4的端口ARI，电阻R10连接至电感L8与电容C17之间；第二端62依次通过电容C19、电阻R9、电感L9、电容C18及电阻R7连接至U4的端口ALI，电阻R8连接至电感L9与电容C18之间。
音频蓝牙插座7用于插接蓝牙模块，电性连接于所述调频发射芯片3。音频蓝牙插座7为BLE2，包括端口AL-I、端口AR-I、端口GND及用于接入+3.6V 电压的电源端口，端口AL-I依次通过电容C39及电阻R13连接至音频信号插座6的第一端61，端口AR-I依次通过电容C40及电阻R24连接至音频信号插座6的第二端62。电阻R23及电阻R26的一端分别连接至音频信号插座6的第一端61及第二端62，电阻R23及电阻R26的另一端接地。
例如，调频发射电路100的音频输入有2路：有线输入(即通过音频信号插座6输入)和无线输入(即通过音频蓝牙插座7输入)，有线输入通过发射器上的AUX接口，可将电视机、光碟机或其他设备的音频信号接入；无线输入通过蓝牙连接方式，可将蓝牙配对的手机播放的音频信号发射出去，供多个接收单元放音，从而实现灯光与音乐的互动。可以安装在室内离音频较近的地方，如电视机旁，通过设置调频发射电路100，将电视机的声音通过该调频发射电路100发送到多个接收单元，多个接收单元可以同时发声。
优选的，该调频发射电路100还包括供电装置8，供电装置8电性连接于所述信号放大电路2、所述调频发射芯片3、所述音频蓝牙插座7及所述发射微处理器4。参见图2，所述供电装置8包括供电电路81以及稳压电路82。
供电电路81用于提供第一电压，电性连接于所述信号放大电路2。
稳压电路82用于接入所述第一电压以输出第二电压，其输入端连接于所述供电电路81，其输出端电性连接于所述调频发射芯片3、所述音频蓝牙插座7及所述发射微处理器4。第二电压优选为+3.6V。
优选的。参见图3，所述调频发射电路100还包括用于显示调频信号发射状态的发射LED灯TX-LED，电性连接于所述发射微处理器4。发射LED灯TX-LED的正极通过电阻R5连接至MCU1的端口2。
此外，提供一种调频发射方法，采用如上所述的调频发射电路100，包括步骤S1-S5：
S1、通过所述音频蓝牙插座7插接蓝牙模块或通过所述音频信号插座6插接音频接口接入音频信号；
S2、通过所述调频发射芯片3将所述音频信号转换为调频信号；
S3、通过所述发射微处理器4及所述发射频率编码开关5控制所述调频发射天线1的发射频点；该步骤S3包括子步骤S31-S32：
S31、通过所述发射微处理器4获取所述发射频率编码开关5的三个子开关的状态；参见图3，三个子开关分别为子开关A、子开关B及子开关C，开关闭合时产生信号1，断开时产生信号0，因此三个子开关通过开关组合可以实现八种不同的信号，如下表：
  f1 f2 f3 f4 f5 f6 f7 f8
A 0 0 0 0 1 1 1 1
B 0 0 1 1 0 0 1 1
C 0 1 0 1 0 1 0 1
通过三个子开关的不同组合，可以对应于8种不同的频点。
S32、依据三个所述子开关的状态确定所述发射频点。例如，f1为88MHz，当子开关A断开、子开关B断开，子开关C闭合时，调频发射天线1的工作频点为f1的88MHz，以此类推。
S4、通过所述信号放大电路2对所述调频信号放大；
S5、通过所述调频发射天线1按照所述发射频点发射经放大后的调频信号。
优选的，该调频发射方法还包括步骤S6-S7：
S6、通过第一电压为所述信号放大电路2供电；
S7、通过第二电压为所述调频发射芯片3、所述音频蓝牙插座7及所述发射微处理器4供电。
本文提供了实施例的各种操作。在一个实施例中，所述的一个或操作可以构成一个或计算机可读介质上存储的计算机可读指令，其在被电子设备执行时将使得计算设备执行所述操作。描述一些或所有操作的顺序不应当被解释为暗示这些操作必需是顺序相关的。本领域技术人员将理解具有本说明书的益处的可替代的排序。而且，应当理解，不是所有操作必需在本文所提供的每个实施例中存在。
而且，本文所使用的词语“优选的”意指用作实例、示例或例证。奉文描述为“优选的”任意方面或设计不必被解释为比其他方面或设计更有利。相反，词语“优选的”的使用旨在以具体方式提出概念。如本申请中所使用的术 语“或”旨在意指包含的“或”而非排除的“或”。即，除非另外指定或从上下文中清楚，“X使用A或B”意指自然包括排列的任意一个。即，如果X使用A；X使用B；或X使用A和B二者，则“X使用A或B”在前述任一示例中得到满足。
而且，尽管已经相对于一个或实现方式示出并描述了本公开，但是本领域技术人员基于对本说明书和附图的阅读和理解将会想到等价变型和修改。本公开包括所有这样的修改和变型，并且仅由所附权利要求的范围限制。特别地关于由上述组件(例如元件、资源等)执行的各种功能，用于描述这样的组件的术语旨在对应于执行所述组件的指定功能(例如其在功能上是等价的)的任意组件(除非另外指示)，即使在结构上与执行本文所示的本公开的示范性实现方式中的功能的公开结构不等同。此外，尽管本公开的特定特征已经相对于若干实现方式中的仅一个被公开，但是这种特征可以与如可以对给定或特定应用而言是期望和有利的其他实现方式的一个或其他特征组合。而且，就术语“包括”、“具有”、“含有”或其变形被用在具体实施方式或权利要求中而言，这样的术语旨在以与术语”包含”相似的方式包括。
本发明实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。上述提到的存储介质可以是只读存储器，磁盘或光盘等。上述的各装置或系统，可以执行相应方法实施例中的方法。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (10)

  1. 一种调频发射电路，其特征在于，包括：
    用于发射调频信号的调频发射天线；
    信号放大电路，电性连接于所述调频发射天线；
    调频发射芯片，电性连接于所述信号放大电路；
    发射微处理器，电性连接于所述调频发射芯片；
    用于调节发射频点的发射频率编码开关，电性连接于所述发射微处理器；
    用于插接音频接口的音频信号插座，电性连接于所述调频发射芯片；
    用于插接蓝牙模块的音频蓝牙插座，电性连接于所述调频发射芯片。
  2. 根据权利要求1所述的调频发射电路，其特征在于，还包括：
    供电装置，电性连接于所述信号放大电路、所述调频发射芯片、所述音频蓝牙插座及所述发射微处理器。
  3. 根据权利要求2所述的调频发射电路，其特征在于，所述供电装置包括：
    用于提供第一电压的供电电路，电性连接于所述信号放大电路；
    用于接入所述第一电压以输出第二电压的稳压电路，其输入端连接于所述供电电路，其输出端电性连接于所述调频发射芯片、所述音频蓝牙插座及所述发射微处理器。
  4. 根据权利要求1所述的调频发射电路，其特征在于，所述发射频率编码开关包括三个相互并联的子开关，以切换所述调频发射天线的发射频点。
  5. 根据权利要求1所述的调频发射电路，其特征在于，还包括：
    用于显示调频信号发射状态的发射LED灯，电性连接于所述发射微处理器。
  6. 根据权利要求1所述的调频发射电路，其特征在于，所述信号放大电路包括：
    第一三极管，其基级电性连接于所述调频发射芯片；
    第二三极管，其基级电性连接于所述第一三极管的集电极；
    滤波电路，其一端电性连接于所述第二三极管的集电极，另一端电性连接 于所述调频发射天线。
  7. 根据权利要求1所述的调频发射电路，其特征在于，还包括：
    插座驱动电路，其一端电性连接于所述调频发射芯片，另一端电性连接于所述音频信号插座以及所述音频蓝牙插座。
  8. 一种调频发射方法，提供如权利要求1-7任一项所述的调频发射电路，其特征在于，包括步骤：
    通过所述音频蓝牙插座插接蓝牙模块或通过所述音频信号插座插接音频接口接入音频信号；
    通过所述调频发射芯片将所述音频信号转换为调频信号；
    通过所述发射微处理器及所述发射频率编码开关控制所述调频发射天线的发射频点；
    通过所述信号放大电路对所述调频信号放大；
    通过所述调频发射天线按照所述发射频点发射经放大后的调频信号。
  9. 根据权利要求8所述的调频发射方法，其特征在于，所述通过所述发射微处理器及所述发射频率编码开关控制所述调频发射天线的发射频点的步骤包括以下子步骤：
    通过所述发射微处理器获取所述发射频率编码开关的三个子开关的状态；
    依据三个所述子开关的状态确定所述发射频点。
  10. 根据权利要求8所述的调频发射方法，其特征在于，还包括步骤：
    通过第一电压为所述信号放大电路供电；
    通过第二电压为所述调频发射芯片、所述音频蓝牙插座及所述发射微处理器供电。
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CN201063615Y (zh) * 2007-07-02 2008-05-21 廖炎红 一种蓝牙接收及fm信号发射的信号转换适配器
CN206313758U (zh) * 2016-12-12 2017-07-07 深圳市蚂蚁雄兵物联技术有限公司 一种调频发射电路

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CN110097867A (zh) * 2019-04-03 2019-08-06 陕西艺术职业学院 基于蓝牙传输可拼接双排键电子琴连接装置
CN110784238A (zh) * 2019-09-26 2020-02-11 常熟市欧伏罱电子有限公司 一种耳塞对讲机电路结构
CN117052380A (zh) * 2023-10-10 2023-11-14 四川宏大安全技术服务有限公司 一种无线压力测量装置及方法
CN117052380B (zh) * 2023-10-10 2024-01-02 四川宏大安全技术服务有限公司 一种无线压力测量装置及方法

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