WO2021243923A1 - 信号调制电路、信号解调电路、调制解调模块及电子设备 - Google Patents

信号调制电路、信号解调电路、调制解调模块及电子设备 Download PDF

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WO2021243923A1
WO2021243923A1 PCT/CN2020/121939 CN2020121939W WO2021243923A1 WO 2021243923 A1 WO2021243923 A1 WO 2021243923A1 CN 2020121939 W CN2020121939 W CN 2020121939W WO 2021243923 A1 WO2021243923 A1 WO 2021243923A1
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signal
module
modulation
input
resistor
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PCT/CN2020/121939
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English (en)
French (fr)
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彭国刚
游志福
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深圳市爱宝莱照明技术有限公司
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Publication of WO2021243923A1 publication Critical patent/WO2021243923A1/zh

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

Definitions

  • the present disclosure relates to, but is not limited to, the technical field of household appliances, and in particular to a signal modulation circuit, a signal demodulation circuit, a modulation and demodulation module, and electronic equipment.
  • the adjustable function of the household appliance is realized through the control signal inside the appliance, and the transmission of the control signal involves the internal communication of the household appliance.
  • the present disclosure provides a signal modulation circuit, a signal demodulation circuit, a modulation and demodulation module, and an electronic device, which can realize the internal communication of a household appliance by transmitting a signal on a power line without using an additional signal line, which simplifies The internal structure of the household appliance does not use wireless communication at the same time, which reduces the interference to the surrounding environment.
  • a first signal acquisition module configured to acquire an input signal
  • a modulation module an input terminal of the modulation module is connected to an output terminal of the first signal acquisition module, and the modulation module is configured to perform signal modulation on the input signal to obtain a modulation signal;
  • a coupling module an input end of the coupling module is connected to an output end of a modulation module, an output end of the coupling module is connected to a power line, and the coupling module is configured to couple the modulation signal to the power line.
  • the signal modulation circuit modulates the input signal by using the modulation module to obtain the modulation signal, so that the modulation signal can be transmitted on the power line and realize the internal communication of the household appliance without using a signal line.
  • the coupling module includes a filtering module configured to couple the modulated signal to the power line so that the modulated signal is transmitted on the power line.
  • the modulation module includes a controllable high-frequency square wave oscillator, the controllable high-frequency square wave oscillator, and the modulation module is configured to detect whether the input signal exists: if the input signal exists, all The controllable high frequency square wave oscillator modulates the input signal; if the input signal does not exist, the controllable high frequency square wave oscillator stops signal modulation and continuously detects the input signal.
  • the signal modulation circuit further includes a first protection module connected to the power line and the coupling module, and the first protection module is configured to prevent the modulation signal from being short-circuited, the The first protection module includes at least one inductor.
  • the signal demodulation circuit for internal communication of a household appliance includes:
  • a second signal acquisition module an input end of the second signal acquisition module is connected to a power cord, and the second signal acquisition module is configured to acquire a modulated signal
  • a demodulation module the input end of the demodulation module is connected to the output end of the second signal acquisition module, and the demodulation module is configured to demodulate the modulated signal into an output signal;
  • a signal output module the input terminal of the signal output module is connected to the output terminal of the demodulation module, and the signal output module is configured to output the output signal demodulated by the demodulation module.
  • the signal modulation circuit uses a demodulation module to demodulate the modulated signal into an output signal, and transmits the demodulated signal to other ends of the household appliance, so as to realize the internal communication of the household appliance without using a signal line .
  • the demodulation module includes a decoupler configured to adjust the oscillation frequency of the signal demodulation circuit to reduce distortion of the modulation signal.
  • the demodulation module further includes a first voltage comparator and a second voltage comparator, and the first voltage comparator is configured to detect whether the modulation signal exists: if the modulation signal exists, the The second voltage comparator outputs the output signal; if the modulation signal does not exist, the output of the second voltage comparator is zero.
  • the signal modulation circuit further includes a second protection module configured to prevent the modulation signal from being short-circuited, the second protection module includes at least one inductor, and the second protection module is connected to the The power cord and the second signal acquisition module.
  • a modem module applied to a household appliance includes: the aforementioned signal modulation circuit; the aforementioned signal demodulation circuit; and a power cord.
  • the modem module is configured to modulate and demodulate the communication signal inside the household appliance.
  • the modem module according to the embodiment of the present disclosure is applied to household appliances, which is convenient for installation and disassembly without additional signal lines, and stabilizes the internal communication signals of the household appliances without causing signal interference to the surrounding environment.
  • the electronic device includes the aforementioned modem module.
  • the electronic device has a simple internal structure, does not need to use a signal line, and can achieve internal communication only by relying on an internal DC power line, without using wireless communication, and reduces electromagnetic interference to the use environment.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • the present disclosure proposes a signal modulation circuit, a signal demodulation circuit, a modulation and demodulation module, and electronic equipment.
  • the circuit structure is simple, which facilitates the realization of the use of power cords for internal communication inside the household appliance, and simplifies the internal communication of the household appliance.
  • the communication circuit will not cause electromagnetic interference to the surrounding environment at the same time.
  • Fig. 1 is a schematic diagram of the connection of a signal modulation circuit according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of the connection of a signal demodulation circuit according to an embodiment of the present disclosure
  • Fig. 3 is a circuit block diagram of a modem module according to an embodiment of the present disclosure.
  • Fig. 4 is a module block diagram of an electronic device according to an embodiment of the present disclosure.
  • connection should be understood in a broad sense. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the signal modulation circuit may include a first signal acquisition module, a modulation module, and a coupling module.
  • the signal modulation circuit may specifically include: a first NAND gate U1, a second NAND gate U2, a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2, a power supply positive line power supply +, a power supply negative line
  • the power supply -, the first inductor L1 and the ground GND are connected as shown in Figure 1.
  • the first inductor L1 is connected to the positive power supply line power +, one end is connected to the power input +, the other end is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is connected to the power input-and the first resistor R1.
  • One end is connected, the other end of the first resistor R1 is connected to the output end of the second NAND gate U2 and one end of the second capacitor C2, the first input end and the second input end of the second NAND gate U2 are both connected to the second resistor R2
  • One end of the second capacitor C2 is connected to the other end of the second resistor R2
  • the end of the second resistor R2 connected to the second NAND gate U2 is also connected to the output terminal of the first NAND gate U1
  • the first The first input terminal of the NAND gate U1 is connected to the signal input
  • the second input terminal of the first NAND gate U1 is connected to the end connected to the second resistor R2 and the second capacitor C2, and the power input-and the first NAND gate U1 are respectively Connect to ground GND.
  • the input signal is accessed from the first input terminal of the first NAND gate U1, and the first input terminal of the first NAND gate U1 constitutes a first signal acquisition module.
  • the second NAND gate U2 and the first NAND gate U1 cooperate with each other to form a modulation module, optionally a controllable high-frequency square wave oscillator, and the input terminal of the modulation module is connected to the output terminal of the first signal acquisition module.
  • the first resistor R1 and the first capacitor C1 together form a coupling module, and the output end of the coupling module is connected to the power line.
  • the first signal acquisition module may be configured to acquire signals from chips, switches, remote controls, etc., and the first signal acquisition module transmits the acquired modules to the modulation module.
  • the first signal acquisition module can be used to acquire, for example, control signals for other locations of the household appliance at one end of the household appliance, and convert the control signal into a modulation signal through the modulation module, and then couple the modulation signal to the power line through the coupling module, The modulation signal is transmitted on the power line.
  • the power cord can be configured to transmit modulated signals and provide DC power supply. The use of the power cord can carry out the internal communication of the household appliance while ensuring the normal power supply, which reduces the complexity of the internal circuit of the household appliance, improves the reliability of the household appliance, and thereby increases the service life of the household appliance.
  • the input signal When the input signal is modulated by the modulation module, if there is an input signal, the input signal is modulated into a modulation signal, which can be transmitted on the power line without affecting the power supply of the power line itself.
  • the input signal can be a pulse signal.
  • the modulation module does not need to use an additional power supply, and the input signal can be modulated through the first NAND gate U1 and the second NAND gate U2, so that the input signal can be transmitted on the power line.
  • the modulation module used in household appliances has the characteristics of simple structure, no need to use additional power or signal lines, and can perform pulse width modulation on the input signal, which reduces the internal communication of the household appliance under the premise that the signal can be transmitted normally. the cost of.
  • the coupling module may include a first resistor R1 and a first capacitor C1, and the coupling module is configured to couple the input signal modulated by the modulation module, that is, the modulation signal to the power line, so that the modulation signal can be transmitted on the power line.
  • the coupling module has a simple structure and does not need to use an additional power supply for power supply, which effectively improves the stability of the household appliance and further facilitates the realization of the internal communication of the household appliance. Using the coupling module can also limit the output current of the modulation module to protect the internal circuit of the household appliance.
  • the signal modulation circuit may further include a first protection module composed of a first inductor L1.
  • a first protection module composed of a first inductor L1.
  • the inductance will not affect the direct current, and when the modulation signal passes through the inductor, it will bring resistance to the transmission of the modulation signal, so that the modulation signal can be transmitted along the set direction.
  • Using the first protection module composed of the first inductor L1 can prevent the modulation signal from being short-circuited, so that other parts of the household appliance will not be affected by the modulation signal, and avoid being broken down by other electrical components in the household appliance by the instantaneous high-amplitude pulse signal risks of.
  • the signal demodulation circuit may include a second signal acquisition module, a demodulation module, and a signal output module.
  • the signal demodulation circuit may include: a first voltage comparator U3, a second voltage comparator U4, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8 ,
  • the second inductor L2 is connected to the positive power supply line, one end of which is connected to the power output +, the other end is connected to one end of the third capacitor C3, and the other end of the third capacitor C3 is connected to the power output-and the first voltage comparator U3.
  • the second input terminal is connected.
  • the fourth resistor R4 is connected in series with the seventh resistor R7. The connection point of the fourth resistor R4 and the seventh resistor R7 is also connected to the second input terminal of the first voltage comparator U3.
  • the other end is connected to a 5 volt input voltage
  • the other end of the seventh resistor R7 is grounded
  • the first input end of the first voltage comparator U3 is connected to one end of the eighth resistor R8, the other end of the eighth resistor R8 is grounded, and the first voltage is compared
  • the output end of the device U3 is connected to the anode end of the first diode D1
  • the cathode end of the first diode D1 is connected to one end of the fifth resistor R5 and one end of the fourth capacitor C4
  • the other end of the fifth resistor R5 is connected to the
  • the other end of the four capacitor C4 is grounded
  • the cathode end of the first diode D1 is also connected to the first input end of the second voltage comparator U4, the output end of the second voltage comparator U4 outputs a signal
  • the third resistor R3 is connected to the first input end of the second voltage comparator U4.
  • the six resistors R6 are connected in series, the connection point of the third resistor R3 and the sixth resistor R6 is also connected to the second input terminal of the second voltage comparator U4, the other end of the third resistor R3 is connected to the 5 volt input voltage, and the sixth resistor R6 The other end of is grounded, and the first voltage comparator U3 and the second voltage comparator U4 are respectively connected to a 5 volt input voltage and grounded.
  • the modulation signal is connected from the second input terminal of the first voltage comparator U3, and the second input terminal of the first voltage comparator U3 constitutes a second signal acquisition module.
  • the second voltage comparator U4 and the first voltage comparator U3 cooperate with each other to form a demodulation module.
  • the output terminal of the second voltage comparator U4 constitutes a signal output module.
  • the second signal acquisition module is configured to acquire a signal from the power line, and then transmit the acquired signal to the demodulation module.
  • the second signal acquisition module can be used to acquire the modulated signal from the other end of the household appliance, and the demodulation module can be used to demodulate the modulated signal into an output signal, and then the signal output module can be used to output the output signal.
  • the power cord is configured to transmit modulated signals and provide DC power supply. The use of the power cord can ensure the normal power supply while communicating within the household appliance, reducing the complexity of the internal circuit of the household appliance, improving the reliability of the household appliance, and thereby improving the The service life of household appliances.
  • the two ends of the negative pole of the power cord are grounded to drain the accumulated electric charge inside the household appliance to avoid affecting the household appliance itself.
  • the demodulation module When the input signal is demodulated by the demodulation module, if there is a modulated signal, the modulated signal is demodulated into an output signal, and the modulated signal can be transmitted on the power line without affecting the power line itself.
  • the demodulation module needs to supply power to the first voltage comparator U3 and the second voltage comparator U4 through a 5V input voltage of 5V.
  • the DC power supply in the demodulation module can be powered by the DC power supply of the power cord.
  • the first voltage comparator U3 is configured to detect whether the modulation signal is present: if the modulation signal is present, the output of the second voltage comparator U4 is an output signal; if the modulation signal is not present, the output of the second voltage comparator U4 is zero.
  • the demodulation module may further include a decoupler composed of a fourth capacitor C4 and a fifth resistor R5.
  • a decoupler composed of a fourth capacitor C4 and a fifth resistor R5. The use of a decoupler can adjust the impedance of the signal demodulation circuit itself, so that the impedance matches the input signal power line, avoiding the output signal and modulation signal distortion caused by the generation of echo signals.
  • the signal demodulation circuit may further include a second protection module composed of a second inductor L2.
  • a second protection module composed of a second inductor L2.
  • the inductance will not affect the direct current.
  • the modulation signal passes through the inductor, it will bring resistance to the transmission of the modulation signal, so that the modulation signal can be transmitted along the set direction.
  • the use of the second protection module composed of the second inductor L2 can protect the household appliance, so that other parts of the household appliance will not be affected by the modulation signal, and avoid the risk of breaking down other electrical components in the household appliance by the instantaneous high-amplitude pulse signal .
  • the modem module according to an embodiment of the present disclosure will be described below with reference to FIG. 3.
  • the modem module may include a signal modulation circuit, a signal demodulation circuit, and a power line.
  • the use of the modem module can realize the internal communication of the household appliance without adding signal lines and corresponding chips.
  • the modem module used also has the characteristics of simple structure and no electromagnetic interference to the surrounding environment.
  • the use of the first inductor L1 and the second inductor L2 can enable the modulation signal to be transmitted on the power line between the first inductor L1 and the second inductor L2 to avoid affecting other parts of the household appliance.
  • an electronic device may include: a signal modulation circuit, including a first signal acquisition module, a modulation module, and a coupling module; a signal demodulation circuit, including a second signal acquisition module, a demodulation module, Signal output module; and power cord.
  • the electronic device may include, for example, a household appliance.
  • a power cord can be used to transmit signals to realize the internal communication of the electronic device, which simplifies the internal structure of the electronic device and improves the stability of the electronic device system. Performance, thereby prolonging the service life of electronic equipment.
  • the home appliance may include, for example, a floor lamp.
  • the lamp pole of the floor lamp will be disassembled into multiple sections for the convenience of transportation. If the signal line is added to the lamp pole, it will increase the user's installation difficulty, and the structure is complicated, making it easy to cause damage during installation and use. Therefore, to realize internal communication in the floor lamp, there is no need to add a signal line in the lamp pole, and the power line can be used for internal signal transmission.
  • the utility model publicly proposes to provide a signal modulation circuit, a signal demodulation circuit, a modulation and demodulation module and electronic equipment, which can realize the internal communication of household appliances by transmitting signals on the power line without using additional signal lines.
  • wireless communication because wireless communication is not used, it reduces the impact on the surrounding environment. interference.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

本公开提供了一种信号调制电路、信号解调电路、调制解调模块及电子设备。该调制解调模块包括：信号调制电路，包括第一信号获取模块、调制模块、耦合模块；信号解调电路，包括第二信号获取模块、解调模块、信号输出模块；以及电源线。该电子设备包括上述调制解调模块。根据本公开的信号调制电路、信号解调电路、调制解调模块及电子设备电子设备能够在电源线上传输信号，实现家用电器不同位置间的通信，而不需要使用信号线，简化了家用电器内部结构，同时不使用无线通信，减少了对周围环境的干扰。

Description

信号调制电路、信号解调电路、调制解调模块及电子设备
相关申请的交叉引用
本公开要求于2020年06月05日提交中国专利局的申请号为2020210147658、名称为“信号调制电路、信号解调电路、调制解调模块及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及但不限于家用电器技术领域，尤其是涉及一种信号调制电路、信号解调电路、调制解调模块及电子设备。
背景技术
随着人们生活水平的提高，人们使用可调节的家用电器的频率也越来越高。家用电器的可调节功能是通过电器内部的控制信号实现的，而控制信号的传输就涉及到家用电器的内部通信。
目前，能够进行内部通信的家用电器需要使用信号线或者无线通信进行信号传输。使用信号线会增加家用电器的结构复杂度，增加家用电器的安装难度，而使用无线通信可能会对居住环境内的其他信号造成干扰。
发明内容
本公开提供一种信号调制电路、信号解调电路、调制解调模块及电子设备，能够通过在电源线上传输信号，实现家用电器内部的通信，而不需要使用额外的信号线，这简化了家用电器内部结构，同时不使用无线通信，减少了对周围环境的干扰。
根据本公开的实施例的用于家用电器内部通信的信号调制电路，包括：
第一信号获取模块，所述第一信号获取模块配置成获取输入信号；
调制模块，所述调制模块的输入端连接所述第一信号获取模块的输出端，所述调制模块配置成将所述输入信号进行信号调制，得到调制信号；
耦合模块，所述耦合模块的输入端连接调制模块的输出端，所述耦合模块的输出端连接电源线，所述耦合模块配置成将所述调制信号耦合至电源线。
根据本公开实施例的信号调制电路使用调制模块对输入信号进行调制，得到调制信号，使得调制信号可以在电源线进行传输，实现家用电器的内部通信，而不需要使用信号线。
可选地，所述耦合模块包括滤波模块，所述滤波模块配置成将所述调制信号耦合至所述电源线，使所述调制信号在所述电源线上传输。
可选地，所述调制模块包括可控高频方波振荡器，所述可控高频方波振荡器该调制模块配置成检测所述输入信号是否存在：若所述输入信号存在，则所述可控高频方波振荡器对所述输入信号进行调制；若所述输入信号不存在，则所述可控高频方波振荡器停止信号调制，并对所述输入信号进行持续检测。
可选地，所述信号调制电路还包括第一保护模块，所述第一保护模块连接所述电源线和所述耦合模块，所述第一保护模块配置成防止所述调制信号短路，所述第一保护模块包括至少一个电感。
根据本公开的实施例的用于家用电器内部通信的信号解调电路，该信号解调电路包括：
第二信号获取模块，所述第二信号获取模块的输入端连接电源线，所述第二信号获取模块配置成获取调制信号；
解调模块，所述解调模块的输入端连接所述第二信号获取模块的输出端，所述解调模块配置成将所述调制信号解调成输出信号；
信号输出模块，所述信号输出模块的输入端连接所述解调模块的输出端，所述信号输出模块配置成输出经所述解调模块解调的所述输出信号。
根据本公开实施例的信号调制电路使用解调模块将调制信号解调为输出信号，并将解调后的信号传输至家用电器的其他端，实现家用电器的内部通信，而不需要使用信号线。
可选地，所述解调模块包括解耦器，所述解耦器配置成调节所述信号解调电路的振荡频率，降低所述调制信号的失真。
可选地，所述解调模块还包括第一电压比较器和第二电压比较器，所述第一电压比较器配置成检测所述调制信号是否存在：若所述调制信号存在，则所述第二电压比较器输出所述输出信号；若所述调制信号不存在，则所述第二电压比较器输出为零。
可选地，所述信号调制电路还包括第二保护模块，所述第二保护模块配置成防止所述调制信号短路，所述第二保护模块包括至少一个电感，所述第二保护模块连接所述电源线和所述第二信号获取模块。
根据本公开的实施例的应用于家用电器的调制解调模块，所述调制解调模块包括：前述的信号调制电路；前述的信号解调电路；以及电源线。所述调制解调模块配置成调制和解调家用电器内部的通信信号。
根据本公开实施例的调制解调模块应用于家用电器，便于安装和拆卸，而不需要额外增加信号线，并且使家用电器的内部通信信号稳定，且不会对周围环境造成信号干扰。
根据本公开的实施例的电子设备，所述电子设备包括前述的调制解调模块。
根据本公开实施例的电子设备内部结构简单，不需要使用信号线，仅靠内部的直流电源线就可以实现内部通信，而不需要使用无线通信，并降低了对使用环境的电磁干扰。
本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开提出一种信号调制电路、信号解调电路、调制解调模块及电子设备，所述电路结构简单，便于实现在家用电器的内部使用电源线进行内部通信，简化了家用电器内部通信电路，同时不会对周围的环境造成电磁干扰。
本公开的附加优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本公开的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
本公开的上述和/或附加的优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开实施例的信号调制电路的连接示意图；
图2是根据本公开实施例的信号解调电路的连接示意图；
图3是根据本公开实施例的调制解调模块的电路框图；
图4是根据本公开实施例的电子设备的模块框图。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅配置成解释本公开，而不能理解为对本公开的限制。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
下面参考图1描述根据本公开实施例的信号调制电路。
如图1所示，根据本公开实施例的信号调制电路可以包括第一信号获取模块、调制模块及耦合模块。信号调制电路具体可以包括：第一与非门U1、第二与非门U2、第一电阻R1、第二电阻R2、第一电容C1、第二电容C2、电源正极线电源+、电源负极线电源-、第一电感L1及接地GND，具体连接方式如图1所示。具体地，第一电感L1连接在电源正极线电源+上，其一端连接电源输入+，另一端连接第一电容C1的一端，第一电容C1的另一端与电源输入-和第一电阻R1的一端连接，第一电阻R1的另一端连接第二与非门U2的输出端和第二电容C2的一端，第二与非门U2的第一输入端和第二输入端均与第二电阻R2的一端连接，第二电容C2的另一端与第二电阻R2的另一端连接，第二电阻R2与第二与非门U2连接的一端还与第一与非门U1的输出端连接，第一与非门U1的第一输入端连接信号输入，第一与非门U1的第二输入端与第二电阻R2和第二电容C2连接的一端连接，电源输入-和第一与非门U1分别与接地GND连接。
输入信号从第一与非门U1的第一输入端接入，该第一与非门U1的第一输入端构成第一信号获取模块。第二与非门U2与第一与非门U1相互配合，构成调制模块，可选地为可控高频方波振荡器，该调制模块的输入端连接第一信号获取模块的输出端。第一电阻R1与第一电容C1共同构成耦合模块，该耦合模块的输出端连接电源线。
具体地，当信号调制电路应用于家用电器时，第一信号获取模块可以配置成获取来自芯片、开关、遥控器等的信号，第一信号获取模块将获取的模块传输至调制模块。使用第一信号获取模块可以在家用电器的一端获取例如对该家用电器的其他位置的控制信号，并通过调制模块将控制信号转换为调制信号，然后通过耦合模块将调制信号耦合至电源线上，使调制信号在电源线上传输。电源线可以配置成传输调制信号并进行直流供电。使用电源线可以在保证正常供电的同时进行家用电器内部的通信，降低了家用电器内部电路的复杂度，提升了家用电器的可靠性，进而提升了家用电器的使用寿命。
通过调制模块对输入信号进行调制时，若有输入信号，则将输入信号调制成调制信号，该调制信号可以在电源线上传输，而不对电源线的供电本身造成影响。输入信号可以为脉冲信号。调制模块不需要使用额外的电源，通过第一与非门U1与第二与非门U2即可对输入信号进行调制，从而使输入信号可以在电源线上进行传输。在家用电器中使用的调制模 块具有结构简单、不需要使用额外的电源或信号线的特点，并可以对输入信号进行脉冲宽度调制，在保证信号能够正常传输的前提下，降低了家用电器内部通信的成本。
此外，耦合模块可以包括第一电阻R1与第一电容C1，该耦合模块配置成将经调制模块调制的输入信号即调制信号耦合至电源线，使得调制信号可以在电源线上传输。耦合模块的结构简单，不需要使用额外的电源进行供电，有效地提高了家用电器的稳定性，进一步有利于实现家用电器的内部通信。使用耦合模块还可以限制调制模块的输出电流，实现对家用电器内部电路的保护。
在一些实施例中，信号调制电路还可以包括由第一电感L1构成的第一保护模块。在直流电通过电感时，电感不会对直流电造成影响，而在调制信号通过电感时，会对调制信号的传输带来阻力，使得调制信号能够沿着设定好的方向传输。使用由第一电感L1构成的第一保护模块可以避免调制信号被短路，使得家用电器的其他部分不会受到调制信号的影响，避免被瞬时高振幅的脉冲信号击穿家用电器中的其他电器元件的风险。
下面参考图2描述根据本公开实施例的信号解调电路。
如图2所示，根据本公开实施例的信号解调电路可以包括第二信号获取模块、解调模块及信号输出模块。信号解调电路可以包括：第一电压比较器U3、第二电压比较器U4、第三电阻R3、第四电阻R4、第五电阻R5、第六电阻R6、第七电阻R7、第八电阻R8、第三电容C3、第四电容C4、第一二极管D1、第二电感L2、接地GND、电源正极线电源+、电源负极线电源-及5伏输入电压5V，具体连接方式如图2所示。具体地，第二电感L2连接在电源正极线上，其一端连接电源输出+，另一端连接第三电容C3的一端，第三电容C3的另一端与电源输出-和第一电压比较器U3的第二输入端连接，第四电阻R4与第七电阻R7串联连接，第四电阻R4与第七电阻R7连接的接点也与第一电压比较器U3的第二输入端连接，第四电阻R4的另一端连接5伏输入电压，第七电阻R7的另一端接地，第一电压比较器U3的第一输入端与第八电阻R8的一端连接，第八电阻R8的另一端接地，第一电压比较器U3的输出端连接第一二极管D1的阳极端，第一二极管D1的阴极端与第五电阻R5的一端和第四电容C4的一端连接，第五电阻R5的另一端和第四电容C4的另一端接地，第一二极管D1的阴极端还与第二电压比较器U4的第一输入端连接，第二电压比较器U4的输出端输出信号，第三电阻R3与第六电阻R6串联连接，第三电阻R3与第六电阻R6连接的接点还与第二电压比较器U4的第二输入端连接，第三电阻R3的另一端连接5伏输入电压，第六电阻R6的另一端接地，第一电压比较器U3和第二电压比较器U4分别连接5伏输入电压并接地。
调制信号从第一电压比较器U3的第二输入端接入，第一电压比较器U3的第二输入端构成第二信号获取模块。第二电压比较器U4与第一电压比较器U3相互配合，构成解调模 块。第二电压比较器U4的输出端构成信号输出模块。
具体地，当信号解调电路应用于家用电器时，第二信号获取模块配置成获取来自电源线的信号，然后将获取的信号传输至解调模块。使用第二信号获取模块可以获取来自家用电器的另一端的调制信号，并使用解调模块将调制信号解调为输出信号，然后使用信号输出模块输出输出信号。电源线配置成传输调制信号并进行直流供电，使用电源线可以在保证正常供电的同时进行家用电器内部的通信，降低了家用电器内部电路的复杂度，提升了家用电器的可靠性，进而提升了家用电器的使用寿命。电源线负极的两端接地，将家用电器内部累计的电荷导出，避免对家用电器本身造成影响。
通过解调模块对输入信号进行解调时，若有调制信号，则将调制信号解调成输出信号，该调制信号可以在电源线上传输，而不对电源线本身造成影响。解调模块中需要通过5伏输入电压5V对第一电压比较器U3与第二电压比较器U4进行供电。解调模块中的直流电源供给可以通过电源线的直流电源进行供电。第一电压比较器U3配置成检测调制信号是否存在：若调制信号存在，则第二电压比较器U4输出为输出信号；若调制信号不存在，则第二电压比较器U4输出为零。
在一些实施例中，解调模块还可以包括由第四电容C4和第五电阻R5构成的解耦器。使用解耦器可以调节信号解调电路自身的阻抗，使得阻抗与输入的信号机电源线匹配，避免因产生回波信号，而造成的输出信号及调制信号失真。
在一些实施例中，信号解调电路还可以包括由第二电感L2构成的第二保护模块。在直流电通过电感时，电感不会对直流电造成影响，在调制信号通过电感时，会对调制信号的传输带来阻力，使得调制信号能够沿着设定好的方向传输。使用由第二电感L2构成的第二保护模块可以保护家用电器，使得家用电器的其他部分不会受到调制信号的影响，避免被瞬时高振幅的脉冲信号击穿家用电器中的其他电器元件的风险。
下面参考图3描述根据本公开实施例的调制解调模块。
如图3所示，根据本公开实施例的调制解调模块可以包括信号调制电路、信号解调电路及电源线。
具体地，使用调制解调模块可以在不增加信号线及相应芯片的情况下实现家用电器的内部通信。使用的调制解调模块还具有结构简单、不会对周围环境造成电磁干扰的特点。
在一些实施例中，使用第一电感L1与第二电感L2可以使调制信号在第一电感L1与第二电感L2之间的电源线上传输，避免对家用电器的其他部分造成影响。
下面参考图4描述根据本公开实施例的电子设备。
如图4所示，根据本公开实施例的电子设备可以包括：信号调制电路，包括第一信号获取模块、调制模块、耦合模块；信号解调电路，包括第二信号获取模块、解调模块、信 号输出模块；以及电源线。
具体地，电子设备可以包括例如家用电器，使用根据本公开实施例的电子设备可以应用电源线来传输信号以实现电子设备的内部通信，简化了电子设备的内部结构，提高了电子设备系统的稳定性，进而延长了电子设备的使用寿命。
在一些实施例中，家用电器可以包括例如落地灯。落地灯的灯杆为了方便运输会拆开成多段，如果在灯杆中增加信号线会增加用户的安装难度，并且结构复杂，使得在安装和使用的过程中容易造成损坏。因此，在落地灯中实现内部通信则不需要在灯杆中增加信号线，而可以使用电源线进行内部的信号传输。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。
工业实用性
本实用新型公开提出提供一种信号调制电路、信号解调电路、调制解调模块及电子设备，能够通过在电源线上传输信号，实现家用电器内部的通信，而不需要使用额外的信号线，这简化了家用电器内部结构，提高了电子设备系统的稳定性，进而延长了电子设备的使用寿命，降低了家用电器内部通信的成本，与此同时由于不使用无线通信，减少了对周围环境的干扰。

Claims (18)

  1. 一种用于家用电器内部通信的信号调制电路，其特征在于，所述信号调制电路包括：
    第一信号获取模块，所述第一信号获取模块配置成获取输入信号；
    调制模块，所述调制模块的输入端连接所述第一信号获取模块的输出端，所述调制模块配置成将所述输入信号进行信号调制，得到调制信号；
    耦合模块，所述耦合模块的输入端连接所述调制模块的输出端，所述耦合模块的输出端连接电源线，所述耦合模块配置成将所述调制信号耦合至所述电源线。
  2. 根据权利要求1所述的信号调制电路，其特征在于，所述第一信号获取模块由第一与非门的第一输入端构成。
  3. 根据权利要求1和2中任一项所述的信号调制电路，其特征在于，所述耦合模块包括滤波模块，所述滤波模块配置成将所述调制信号耦合至所述电源线，使所述调制信号在所述电源线上传输。
  4. 根据权利要求1至3中任一项所述的信号调制电路，其特征在于，所述耦合模块由第一电阻与第一电容构成，其中，所述第一电容的一端连接第一电感，所述第一电容的另一端与电源输入和所述第一电阻的一端连接，所述第一电阻的另一端连接第二与非门的输出端和第二电容的一端。
  5. 根据权利要求1至4中任一项所述的信号调制电路，其特征在于，所述调制模块包括可控高频方波振荡器，所述可控高频方波振荡器配置成检测所述输入信号是否存在：若所述输入信号存在，则所述可控高频方波振荡器对所述输入信号进行所述信号调制；若所述输入信号不存在，则所述可控高频方波振荡器停止信号调制，并对所述输入信号进行持续检测。
  6. 根据权利要求1至5中任一项所述的信号调制电路，其特征在于，所述调制模块由所述第二与非门与所述第一与非门相互配合构成，其中，所述第一与非门的第一输入端连接信号输入，所述第二与非门的第一输入端和第二输入端均与第二电阻的一端连接，所述第二电阻与所述第二与非门连接的一端还与所述第一与非门的输出端连接，所述第二电阻的另一端与所述第二电容的另一端连接，所述第一与非门的第二输入端与所述第二电阻和所述第二电容连接的一端连接，所述第二与非门的输出端与所述第一电阻的另一端和所述第二电容的一端连接，所述第一与非门与接地连接。
  7. 根据权利要求1至6中任一项所述的信号调制电路，其特征在于，所述信号调制电路还包括第一保护模块，所述第一保护模块连接所述电源线和所述耦合模块，并配 置成防止所述调制信号短路。
  8. 根据权利要求1至7所述的信号调制电路，其特征在于，所述第一保护模块包括所述第一电感，使所述调制信号沿设定好的方向传输，其中，所述第一电感连接在电源正极线上，其一端连接电源输入，另一端连接所述第一电容的一端。
  9. 一种用于家用电器内部通信的信号解调电路，其特征在于，所述信号解调电路包括：
    第二信号获取模块，所述第二信号获取模块的输入端连接电源线，所述第二信号获取模块配置成获取调制信号；
    解调模块，所述解调模块的输入端连接所述第二信号获取模块的输出端，所述解调模块配置成将所述调制信号解调成输出信号；
    信号输出模块，所述信号输出模块的输入端连接所述解调模块的输出端，所述信号输出模块配置成输出经所述解调模块解调的所述输出信号。
  10. 根据权利要求9所述的信号解调电路，其特征在于，所述第二信号获取模块由第一电压比较器的第二输入端构成。
  11. 根据权利要求9和10中任一项所述的信号解调电路，其特征在于，所述解调模块包括解耦器，所述解耦器配置成调节所述信号解调电路的振荡频率，降低所述调制信号的失真。
  12. 根据权利要求9至11中任一项所述的信号解调电路，其特征在于，所述解耦器由第四电容和第五电阻构成，其中，所述第五电阻的一端和所述第四电容的一端与第一二极管的阴极端连接，所述第五电阻的另一端和所述第四电容的另一端接地。
  13. 根据权利要求9至12中任一项所述的信号解调电路，其特征在于，所述解调模块还包括所述第一电压比较器和第二电压比较器，所述第一电压比较器配置成检测所述调制信号是否存在：若所述调制信号存在，则所述第二电压比较器输出所述输出信号；若所述调制信号不存在，则所述第二电压比较器输出为零。
  14. 根据权利要求9至13中任一项所述的信号解调电路，其特征在于，所述第一电压比较器的第二输入端连接第三电容的一端与电源输出，所述第一电压比较器的第二输入端还与第四电阻和第七电阻串联连接的接点连接，所述第一电压比较器的第一输入端与第八电阻的一端连接，所述第一电压比较器的输出端连接所述第一二极管的阳极端，所述第二电压比较器的第一输入端与所述第一二极管的阴极端连接，所述第二电压比较器的第二输入端与第三电阻和第六电阻串联连接的接点连接，所述第一电压比较器和所述第二电压比较器分别连接5伏输入电压并接地，所述第二电压比较器的输出端输出信号。
  15. 根据权利要求9至14中任一项所述的信号解调电路，其特征在于，所述信号解 调电路还包括第二保护模块，所述第二保护模块连接所述电源线和所述第二信号获取模块，并配置成防止所述调制信号短路。
  16. 根据权利要求9至15中任一项所述的信号解调电路，其特征在于，所述第二保护模块包括第二电感，使所述调制信号沿设定好的方向传输，其中，所述第二电感连接在电源正极线上，其一端连接电源输出，另一端连接所述第三电容的一端。
  17. 一种用于家用电器内部通信的调制解调模块，其特征在于，所述调制解调模块配置成调制和解调家用电器内部通信的信号，包括：如权利要求1至8中任一项所述的信号调制电路；如权利要求9至16中任一项所述的信号解调电路；和电源线。
  18. 一种电子设备，其特征在于，所述电子设备包括如权利要求17所述的调制解调模块。
PCT/CN2020/121939 2020-06-05 2020-10-19 信号调制电路、信号解调电路、调制解调模块及电子设备 WO2021243923A1 (zh)

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