Transmission circuit and transmission device

Abstract

The utility model discloses a transmission circuit and a transmission device, the transmission circuit comprises a power supply circuit and a signal enhancement circuit, the input end of the power supply circuit is the power supply input end of the transmission circuit, the signal input end of the signal enhancement circuit is the signal input end of the transmission circuit, and the output end of the power supply circuit is connected with the power supply input end of the signal enhancement circuit. The output end of the signal enhancement circuit is the output end of the transmission circuit; the power supply circuit is used for converting a first direct-current electric signal into a second direct-current electric signal so as to supply power to the signal enhancement circuit, and the voltage of the first direct-current electric signal is greater than that of the second direct-current electric signal; the signal enhancement circuit is used for converting the first alternating-current signal into a second alternating-current signal, and the power of the first alternating-current signal is smaller than that of the second alternating-current signal. In the embodiment of the invention, the attenuation problem of the signal in the long-distance transmission process can be solved, and the signal can be ensured to realize long-distance control of the light source.

Description

Technical Field

[0001] The present application relates to the technical field of electronic circuits, and in particular to a transmission circuit and a transmission device. Background Art

[0002] With the development of smart lighting technology, people's demand for control of lighting systems continues to grow. Modern lamps not only need to meet basic lighting needs, but also need to support control functions such as adjustable light color and dynamic scene change. In order to achieve control of the lighting system, the light source control signal will be output to the light source driver chip through the transmission line to control the brightness and color of the light source. However, as the transmission distance increases, signal attenuation becomes a significant problem, and the signal driving ability is reduced, resulting in the inability to achieve long-distance signal transmission. Utility Model Content

[0003] The embodiments of the present application disclose a transmission circuit and a transmission device for increasing the transmission power of an alternating current signal and realizing long-distance transmission of the signal.

[0004] In a first aspect, an embodiment of the present application discloses a transmission circuit, including a power supply circuit and a signal enhancement circuit, wherein:

[0005] The input end of the power supply circuit is the power supply input end of the transmission circuit, the signal input end of the signal enhancement circuit is the signal input end of the transmission circuit, the output end of the power supply circuit is connected to the power supply input end of the signal enhancement circuit, and the output end of the signal enhancement circuit is the output end of the transmission circuit;

[0006] The power supply circuit is used to convert the first DC signal into a second DC signal to supply power to the signal enhancement circuit, and the voltage of the first DC signal is greater than the voltage of the second DC signal;

[0007] The signal enhancement circuit is used to convert the first alternating current signal into a second alternating current signal, and the power of the first alternating current signal is less than the power of the second alternating current signal.

[0008] In a second aspect, an embodiment of the present application discloses a transmission device, comprising a first transmission line device, a second transmission line device, and a transmission circuit as described in the first aspect, wherein: one end of the first transmission line device is the input end of the transmission device, the other end of the first transmission line device is connected to the input end of the transmission circuit, the output end of the transmission circuit is connected to one end of the second transmission line device, and the other end of the second transmission line device is the output end of the transmission device.

[0009] In the embodiment of the present application, the transmission circuit includes a power supply circuit and a signal enhancement circuit, the input end of the power supply circuit is the power supply input end of the transmission circuit, the signal input end of the signal enhancement circuit is the signal input end of the transmission circuit, the output end of the power supply circuit is connected to the power supply input end of the signal enhancement circuit, and the output end of the signal enhancement circuit is the output end of the transmission circuit; the power supply circuit is used to convert the first DC signal into a second DC signal to supply power to the signal enhancement circuit, and the voltage of the first DC signal is greater than the voltage of the second DC signal; the signal enhancement circuit is used to convert the first AC signal into the second AC signal, and the power of the first AC signal is less than the power of the second AC signal. It can be seen that the power supply circuit can convert the first DC signal with a higher voltage into the second DC signal with a lower voltage, can adapt to the signal enhancement circuit with different voltage requirements, can provide stable power supply for the signal enhancement circuit, and the signal enhancement circuit can convert the first AC signal with a lower power into the second AC signal with a higher power, which can solve the problem of signal attenuation during long-distance transmission, thereby ensuring that the signal can achieve long-distance control of the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a structural schematic diagram of a lighting system disclosed in an embodiment of the present application;

[0012] Figure 2 is a schematic diagram of the structure of a transmission circuit disclosed in an embodiment of the present application;

[0013] Figure 3 is a structural schematic diagram of a signal enhancement circuit disclosed in an embodiment of the present application;

[0014] Figure 4 is a structural schematic diagram of another signal enhancement circuit disclosed in an embodiment of the present application;

[0015] Figure 5 It is a structural schematic diagram of another signal enhancement circuit disclosed in an embodiment of the present application;

[0016] Figure 6 It is a structural schematic diagram of another signal enhancement circuit disclosed in an embodiment of the present application;

[0017] Figure 7 It is a structural schematic diagram of another signal enhancement circuit disclosed in an embodiment of the present application;

[0018] Figure 8 is a structural schematic diagram of another transmission circuit disclosed in an embodiment of the present application;

[0019] Fig. 9 is a structural schematic diagram of another transmission circuit disclosed in an embodiment of the present application;

[0020] Fig.10 is a structural schematic diagram of another transmission circuit disclosed in an embodiment of the present application;

[0021] Fig.11 is a structural schematic diagram of another transmission circuit disclosed in an embodiment of the present application;

[0022] Fig.12 is a structural schematic diagram of another transmission circuit disclosed in an embodiment of the present application;

[0023] Fig.13 It is a structural schematic diagram of a transmission device disclosed in an embodiment of the present application;

[0024] Fig.14 It is a structural schematic diagram of a transmission line device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] The embodiments of the present application disclose a transmission circuit and a transmission device, which are used to increase the transmission power of an alternating current signal and realize long-distance transmission of the signal.

[0027] In order to better understand the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below.

[0028] See also Figure 1 , Figure 1 Schematic diagram of a lighting system disclosed in the embodiment of the present application. Figure 1 As shown, the lighting system may include a controller, a transmission line and a light source, and the controller sends a light source control signal to the light source through the transmission line, and the light source control signal is used to control the brightness and color of the light source. Due to the existence of impedance, the light source control signal will be attenuated during the transmission process, resulting in a limited transmission distance of the light source control signal, and the signal cannot be transmitted over long distances, which limits the application scenarios of the lighting system.

[0029] In order to solve the above problems, the present application designs a transmission circuit, which can increase the transmission power of the AC signal through a signal enhancement circuit to achieve long-distance transmission of the signal.

[0030] See also Figure 2 , Figure 2 Schematic diagram of a transmission circuit disclosed in an embodiment of the present application. Figure 2 As shown, the transmission circuit may include a power supply circuit and a signal enhancement circuit.

[0031] The input end of the power supply circuit is the power supply input end of the transmission circuit, the signal input end of the signal enhancement circuit is the signal input end of the transmission circuit, the output end of the power supply circuit is connected to the power supply input end of the signal enhancement circuit, and the output end of the signal enhancement circuit is the output end of the transmission circuit.

[0032] The power input end of the transmission circuit can receive a first DC signal, and then the power circuit can convert the first DC signal into a second DC signal to power the signal enhancement circuit, that is, use the converted DC signal to provide a bias for the signal enhancement circuit. The voltage of the first DC signal is greater than the voltage of the second DC signal. The voltage of the DC signal received by the transmission circuit is generally greater than the DC voltage to be used by the signal enhancement circuit. In order to provide a suitable DC bias voltage for the signal enhancement circuit, the power circuit can first convert the high-voltage DC signal into a DC signal of the voltage required by the signal enhancement circuit. Exemplarily, the voltage of the first DC signal can be 36V, and the voltage of the second DC signal can be 4.8V.

[0033] The signal input end of the transmission circuit can receive a first alternating current signal including information. Exemplarily, the first alternating current signal can be a control signal sent by the light source controller to the transmission circuit. When the distance between the signal generating end and the load is far, as the distance increases, the resistance and inductance of the transmission circuit will cause the signal strength to decrease, that is, there is signal attenuation during the transmission process. If the attenuation is too large, the signal may become too weak to be correctly recognized by the load. Therefore, the signal can be enhanced by a signal enhancement circuit before being transmitted to the load.

[0034] The signal enhancement circuit can convert the first alternating current signal into a second alternating current signal, and the power of the first alternating current signal is less than the power of the second alternating current signal.

[0035] The signal enhancement circuit can transmit the second AC signal to the load. The load can be a light emitting device, in which case the second AC signal can be a signal for controlling the brightness, color, etc. of the light emitting device. The load can also be other devices that require signal transmission.

[0036] It should be understood that the connection in the present application may be an electrical connection.

[0037] exist Figure 2In the described transmission circuit, the transmission circuit includes a power supply circuit and a signal enhancement circuit, the input end of the power supply circuit is the power supply input end of the transmission circuit, the signal input end of the signal enhancement circuit is the signal input end of the transmission circuit, the output end of the power supply circuit is connected to the power supply input end of the signal enhancement circuit, and the output end of the signal enhancement circuit is the output end of the transmission circuit; the power supply circuit is used to convert a first DC signal into a second DC signal to supply power to the signal enhancement circuit, and the voltage of the first DC signal is greater than the voltage of the second DC signal; the signal enhancement circuit is used to convert a first AC signal into a second AC signal, and the power of the first AC signal is less than the power of the second AC signal. It can be seen that the power supply circuit can convert a first DC signal with a higher voltage into a second DC signal with a lower voltage, can adapt to signal enhancement circuits with different voltage requirements, can provide stable power supply for the signal enhancement circuit, and the signal enhancement circuit can convert a first AC signal with a lower power into a second AC signal with a higher power, can solve the problem of signal attenuation during long-distance transmission, and thus can ensure that the signal can achieve long-distance control of the light source.

[0038] It should be understood that when signal transmission is required between two devices, there may be one transmission circuit or multiple transmission circuits between them.

[0039] See also Figure 3 , Figure 3 Schematic diagram of a signal enhancement circuit disclosed in an embodiment of the present application. Figure 3 As shown, the signal enhancement circuit may include a driving module and a first resistor R1, the power input end of the driving module is connected to the power output end of the power circuit, the signal input end of the driving module is the signal input end of the transmission circuit, the output end of the driving module is connected to one end of the first resistor R1, and the other end of the first resistor R1 is the output end of the transmission circuit.

[0040] The driving module can convert the first alternating current signal into a second alternating current signal.

[0041] Exemplarily, the driving module can be a single-channel Schmitt trigger buffer. The single-channel Schmitt trigger buffer can be packaged in SOT-23 or in other ways. The model of the single-channel Schmitt trigger buffer can be AiP74LVC1G17, or it can be other models with equivalent functions. In the case where the model of the single-channel Schmitt trigger buffer is AiP74LVC1G17, the single-channel Schmitt trigger buffer can include a VCC pin, an A pin, a Y pin and a GND pin. The VCC pin is a power input pin of the driving module, which can be connected to the output end of the power supply circuit. The A pin is a signal input pin of the driving module, which can be connected to the signal input end of the transmission circuit. The Y pin is an output pin of the driving module, which can be connected to one end of the first resistor R1. The GND pin is a ground pin of the driving module, which can be connected to the ground end.

[0042] The first resistor R1 can protect the driving module from being damaged by excessive current by limiting the current and preventing unexpected current spikes; it can also prevent the current from flowing into the driving module in reverse and prevent the driving module from being damaged by the backflow of current.

[0043] See also Figure 4 , Figure 4 is a schematic diagram of another signal enhancement circuit disclosed in an embodiment of the present application. Figure 4 The signal enhancement circuit shown consists of Figure 3 The signal enhancement circuit shown is optimized. Figure 4 As shown, the signal enhancement circuit may further include a first capacitor C1. One end of the first capacitor C1 is respectively connected to the output end of the driving module and one end of the first resistor R1, and the other end of the first capacitor C1 is connected to the ground.

[0044] The first capacitor C1 has a filtering function, which can smooth the fast edge of the signal and reduce overshoot. The first capacitor C1 also has a voltage stabilization function, which can provide or absorb additional energy during signal changes to prevent the oscillation of the signal waveform. In addition, the first capacitor C1 can also cooperate with the first resistor R1 to provide damping and reduce oscillation.

[0045] See also Figure 5 , Figure 5 is a structural diagram of another signal enhancement circuit disclosed in the embodiment of the present application. Figure 5 The signal enhancement circuit shown consists of Figure 4 The signal enhancement circuit shown is optimized. Figure 5 As shown, the signal enhancement circuit may further include a second resistor R2 and a third resistor R3, wherein: one end of the second resistor R2 is the signal input end of the transmission circuit, the other end of the second resistor R2 is respectively connected to the signal input end of the driving module and one end of the third resistor R3, and the other end of the third resistor R3 is connected to the ground end.

[0046] See also Figure 6 , Figure 6 is a structural diagram of another signal enhancement circuit disclosed in the embodiment of the present application. Figure 6 The signal enhancement circuit shown consists of Figure 5 The signal enhancement circuit shown is optimized. Figure 6 As shown, the signal enhancement circuit may further include a second capacitor C2, and the second capacitor C2 is connected in parallel with the third resistor R3.

[0047] The second resistor R2 and the third resistor R3 can reduce high frequency noise in the first AC signal and improve the quality of the first AC signal. In addition, the second resistor R2 and the third resistor R3 can also form a low pass filter with the second capacitor C2 to shape the signal edge and reduce the rapid change of the signal, thereby reducing overshoot and oscillation.

[0048] See also Figure 7 , Figure 7 is a structural diagram of another signal enhancement circuit disclosed in the embodiment of the present application. Figure 7 The signal enhancement circuit shown consists of Figure 6 The signal enhancement circuit shown is optimized. Figure 7 As shown, the signal enhancement circuit may further include a third capacitor C3, one end of the third capacitor C3 is connected to the power input end of the driving module, and the other end of the third capacitor C3 is connected to the ground end. Figure 7 As shown, the signal enhancement circuit may further include an electrostatic suppressor ED1, one end of the electrostatic suppressor ED1 is connected to the other end of the first resistor R1, and the other end of the electrostatic suppressor ED1 is connected to the ground.

[0049] The third capacitor C3 can be used as a decoupling capacitor to reduce high-frequency noise on the power line. The third capacitor C3 can also provide local energy storage, especially when the load changes instantly, it can respond quickly and provide the required energy, and can maintain voltage stability, thereby providing a stable voltage for the drive module.

[0050] The electrostatic suppressor ED1 can absorb static electricity. It can absorb and disperse the electrostatic energy when it hits, preventing the energy from flowing to sensitive circuit parts and causing damage, and can protect the drive module.

[0051] See also Figure 8 , Figure 8 is a schematic diagram of the structure of another transmission circuit disclosed in the embodiment of the present application. Figure 8As shown, the power supply circuit may include a first conversion module, a second conversion module and a third conversion module, wherein: the input end of the first conversion module and the first input end of the second conversion module are the power input end of the transmission circuit, the output end of the first conversion module is connected to the second input end of the second conversion module, the output end of the second conversion module is connected to the input end of the third conversion module, and the output end of the third conversion module is connected to the power input end of the signal enhancement circuit.

[0052] The first conversion module can convert the first DC power signal into a third DC power signal, and the voltage of the first DC power signal is greater than the voltage of the third DC power signal.

[0053] The second conversion module can convert the third DC power signal into a fourth DC power signal, and the voltage of the third DC power signal is greater than the voltage of the fourth DC power signal.

[0054] The third conversion module can convert the fourth DC power signal into a second DC power signal, and the voltage of the fourth DC power signal is greater than the voltage of the second DC power signal.

[0055] exist Figure 8 In the described power supply circuit, the first conversion module can be a voltage divider module, which can be composed of components such as resistors or voltage regulator diodes, and can reduce the input voltage (first DC signal) to a lower level (third DC signal). The second conversion module can further reduce the voltage (convert from the third DC signal to the fourth DC signal). The third conversion module can adjust the voltage to the level required by the signal enhancement circuit (second DC signal). The power supply circuit can provide a stable power supply for the signal enhancement circuit through step-by-step voltage reduction and voltage stabilization processing, which can ensure that the back-end circuit can operate at the optimal voltage, thereby improving the performance and reliability of the overall system.

[0056] See also Fig. 9 , Fig. 9 is a schematic diagram of the structure of another transmission circuit disclosed in the embodiment of the present application. Fig. 9 The power supply circuit shown is composed of Figure 8 The power supply circuit shown is optimized. Fig. 9 As shown, the first conversion module may include a fourth resistor R4 and a fifth resistor R5, one end of the fourth resistor R4 is the power input end of the transmission circuit, the other end of the fourth resistor R4 is respectively connected to the second input end of the second conversion module and one end of the fifth resistor R5, and the other end of the fifth resistor R5 is connected to the ground end.

[0057] See also Fig.10 , Fig.10 is a schematic diagram of the structure of another transmission circuit disclosed in the embodiment of the present application. Fig.10 The power supply circuit shown is composed of Fig. 9The power supply circuit shown is optimized. Fig.10 As shown, the first conversion module may further include a fifth capacitor C5, and the fifth capacitor C5 is connected in parallel with the fifth resistor R5.

[0058] The fourth resistor R4 and the fifth resistor R5 may form a voltage divider, which may reduce the DC voltage at the power input terminal to a predetermined lower level.

[0059] The fifth capacitor C5 and the fifth resistor R5 may form a filter network, which may help stabilize the output voltage.

[0060] like Fig. 9 As shown, the second conversion module may include a conversion unit, a first inductor L1 and a fourth capacitor C4, the first input end of the conversion unit is the input end of the transmission circuit, the second input end of the conversion unit is connected to the output end of the first conversion module, the first output end of the conversion unit is respectively connected to one end of the first inductor L1 and one end of the fourth capacitor C4, the other end of the fourth capacitor C4 is connected to the second output end of the conversion unit, the other end of the first inductor L1 is connected to the first input end of the third conversion module, and the third output end of the conversion unit is connected to the second input end of the third conversion module; the conversion unit can convert the third DC signal into a fourth DC signal.

[0061] Exemplarily, the conversion unit may be a buck switching regulator.

[0062] The model of the step-down switching regulator may be PL88104, or may be other models with equivalent functions. When the model of the step-down switching regulator is PL88104, the step-down switching regulator may include a VIN pin, an EN pin, a SW pin, a BST pin, an FB pin, and a GND pin. The VIN pin is the first input pin of the conversion unit, which may be connected to the input end of the transmission circuit. The EN pin is the second input pin of the conversion unit, which may be connected to the output end of the first conversion module. The SW pin is the first output pin of the conversion unit, which may be connected to one end of the first inductor and one end of the fourth capacitor, respectively. The BST pin is the second output pin of the conversion unit, which may be connected to the other end of the fourth capacitor. The FB pin is the third output pin of the conversion unit, which may be connected to the second input end of the third conversion module. The GND pin is the ground pin of the conversion unit, which may be connected to the ground end.

[0063] The first inductor L1 may be a power inductor that can store energy and release it during a switching cycle of the conversion unit to help smooth the output voltage and reduce ripples during the conversion process.

[0064] The fourth capacitor C4 may be a bootstrap capacitor, and may form a low-pass filter with the first inductor L1 to further reduce output ripples and provide a stable direct current signal for the third conversion module.

[0065] like Fig. 9 As shown, the third conversion module may include a sixth resistor R6 and a seventh resistor R7, one end of the sixth resistor R6 is respectively connected to the first output end of the second conversion module and the power input end of the signal enhancement circuit, the other end of the sixth resistor R6 is respectively connected to the second output end of the second conversion module and one end of the seventh resistor R7, and the other end of the seventh resistor R7 is connected to the ground.

[0066] like Fig.10 As shown, the third conversion module may further include a sixth capacitor C6, and the sixth capacitor C6 is connected in parallel with the sixth resistor R6.

[0067] The sixth resistor R6, the seventh resistor R7 and the ground terminal can form a voltage divider, which can fine-tune the voltage to ensure that the power input terminal of the signal enhancement circuit obtains an appropriate voltage.

[0068] The sixth capacitor C6 and the sixth resistor R6 can form a filtering network, which can provide additional decoupling and noise filtering functions, and can ensure the voltage stability of the power input terminal of the signal enhancement circuit.

[0069] See also Fig.11 , Fig.11 FIG. 1 is a schematic diagram of another transmission circuit disclosed in an embodiment of the present application. Fig.11 As shown, the power supply circuit may further include an eighth resistor R8, one end of the eighth resistor R8 is respectively connected to the first output end of the second conversion module and the first input end of the third conversion module, and the other end of the eighth resistor R8 is connected to the ground.

[0070] The eighth resistor R8 can help to quickly discharge when the power is turned off or "powered down", thereby eliminating residual charge in the circuit.

[0071] For example, Fig.11As shown, one end of the fourth resistor R4 and the first input end of the conversion unit are the power input end of the transmission circuit, the other end of the fourth resistor R4 is respectively connected to the second input end of the conversion unit and one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to the ground, the fifth capacitor C5 is connected in parallel with the fifth resistor R5, the first output end of the conversion unit is respectively connected to one end of the first inductor L1 and one end of the fourth capacitor C4, the other end of the fourth capacitor C4 is connected to the second output end of the conversion unit, the other end of the first inductor L1 is respectively connected to one end of the eighth resistor R8, one end of the sixth resistor R6, one end of the sixth capacitor C6 and the power input end of the signal enhancement circuit, the other end of the eighth resistor R8 is connected to the ground, the other end of the sixth resistor R6 is respectively connected to the third output end of the conversion unit, the other end of the sixth capacitor C6 and one end of the seventh resistor R7, and the other end of the seventh resistor R7 is connected to the ground.

[0072] See also Fig.12 , Fig.12 FIG. 1 is a schematic diagram of another transmission circuit disclosed in an embodiment of the present application. Fig.12 As shown, the power supply circuit may further include a first voltage stabilizing module, the first voltage stabilizing module is connected to the input end of the first conversion module; the first voltage stabilizing module may filter high-frequency noise in the first DC signal to obtain a fifth DC signal; the first conversion module may specifically convert the fifth DC signal into a third DC signal. The power supply circuit may further include a second voltage stabilizing module, the second voltage stabilizing module is respectively connected to the output end of the second conversion module and the input end of the third conversion module; the second voltage stabilizing module may filter high-frequency noise in the fourth DC signal to obtain a sixth DC signal; the third conversion module may specifically convert the sixth DC signal into a second DC signal.

[0073] The first voltage stabilizing module may include a seventh capacitor C7 and an eighth capacitor C8.

[0074] Among them, the seventh capacitor C7 can be a capacitor with a capacitance value range from microfarad level to millifarad level, which can filter out low-frequency noise, smooth the lower frequency components in the voltage ripple, and provide a larger energy storage for the circuit, thereby maintaining voltage stability during instantaneous load changes.

[0075] The eighth capacitor C8 may have a capacitance value ranging from the picofarad level to the nanofarad level, and may filter out high-frequency noise, process higher-frequency spikes, and respond quickly to high-frequency changes.

[0076] It should be understood that the seventh capacitor C7 may include one capacitor or multiple capacitors. In the case where the seventh capacitor C7 includes multiple capacitors, the seventh capacitor C7 may be formed by connecting the multiple capacitors in parallel. The eighth capacitor C8 may include one capacitor or multiple capacitors. In the case where the eighth capacitor C8 includes multiple capacitors, the eighth capacitor C8 may be formed by connecting the multiple capacitors in parallel.

[0077] The second voltage stabilization module may include a ninth capacitor C9 and a tenth capacitor C10.

[0078] Among them, the ninth capacitor C9 can be a capacitor with a capacitance value range from microfarad level to millifarad level, which can filter out low-frequency noise, smooth the lower frequency components in the voltage ripple, and provide a larger energy storage for the circuit, thereby maintaining voltage stability during instantaneous load changes.

[0079] The tenth capacitor C10 may have a capacitance value ranging from pico-farad level to nano-farad level, and may filter out high-frequency noise, process higher-frequency spikes, and respond quickly to high-frequency changes.

[0080] It should be understood that the ninth capacitor C9 may include one capacitor or multiple capacitors. In the case where the ninth capacitor C9 includes multiple capacitors, the ninth capacitor C9 may be formed by connecting the multiple capacitors in parallel. The tenth capacitor C10 may include one capacitor or multiple capacitors. In the case where the tenth capacitor C10 includes multiple capacitors, the tenth capacitor C10 may be formed by connecting the multiple capacitors in parallel.

[0081] An embodiment of the present application discloses a transmission device, including a first transmission line device, a second transmission line device and a transmission circuit, wherein: one end of the first transmission line device is the input end of the transmission device, the other end of the first transmission line device is connected to the input end of the transmission circuit, the output end of the transmission circuit is connected to one end of the second transmission line device, and the other end of the second transmission line device is the output end of the transmission device.

[0082] See also Fig.13 , Fig.13 Schematic diagram of a transmission device disclosed in an embodiment of the present application. Fig.13 As shown, the transmission device may include a first transmission line device 101 , a transmission circuit 102 , and a second transmission line device 103 .

[0083] It should be understood that the first transmission line device and the second transmission line device may be various types of media for transmitting signals, such as metal core wires, printed circuit boards (PCBs), and the like.

[0084] It should be understood that when signal transmission is required between two devices, there may be one transmission device or multiple transmission devices between them.

[0085] An embodiment of the present application discloses a transmission line device, which may include a power input terminal, a signal input terminal, a power input ground terminal, a power output terminal, a signal output terminal, and a power output ground terminal.

[0086] See also Fig.14 , Fig.14 Schematic diagram of the structure of a transmission line device disclosed in the embodiment of the present application. Fig.14 As shown, the transmission line device may further include an eleventh capacitor C11 and a twelfth capacitor C12.

[0087] One end of the eleventh capacitor C11 is connected to the power input end of the transmission line device, and the other end of the eleventh capacitor C11 is connected to the ground end.

[0088] The other end of the twelfth capacitor C12 is connected to the power output end of the transmission line device, and the other end of the twelfth capacitor C12 is connected to the ground end.

[0089] The eleventh capacitor C11 and the twelfth capacitor C12 can provide a low impedance path for high-frequency noise to the ground, thereby removing the noise from the signal path and preventing interference from high-frequency switching noise.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A transmission circuit, characterized in that: It includes a power supply circuit and a signal enhancement circuit, wherein: The input end of the power supply circuit is the power supply input end of the transmission circuit, the signal input end of the signal enhancement circuit is the signal input end of the transmission circuit, the output end of the power supply circuit is connected to the power supply input end of the signal enhancement circuit, and the output end of the signal enhancement circuit is the output end of the transmission circuit; The power supply circuit is used to convert the first DC signal into a second DC signal to supply power to the signal enhancement circuit, and the voltage of the first DC signal is greater than the voltage of the second DC signal; The signal enhancement circuit is used to convert the first alternating current signal into a second alternating current signal, and the power of the first alternating current signal is less than the power of the second alternating current signal.

2. The transmission circuit according to claim 1, characterized in that: The signal enhancement circuit includes a driving module and a first resistor, wherein: The power input end of the driving module is connected to the output end of the power circuit, the signal input end of the driving module is the signal input end of the transmission circuit, the output end of the driving module is connected to one end of the first resistor, and the other end of the first resistor is the output end of the transmission circuit; The driving module is used to convert the first alternating current signal into the second alternating current signal.

3. The transmission circuit according to claim 2, characterized in that: The signal enhancement circuit further includes a first capacitor, wherein: One end of the first capacitor is connected to the output end of the driving module and one end of the first resistor respectively, and the other end of the first capacitor is connected to the ground.

4. The transmission circuit according to claim 2, characterized in that: The signal enhancement circuit further includes a second resistor and a third resistor, wherein: One end of the second resistor is the signal input end of the transmission circuit, the other end of the second resistor is respectively connected to the signal input end of the driving module and one end of the third resistor, and the other end of the third resistor is connected to the ground.

5. The transmission circuit according to claim 4, characterized in that: The signal enhancement circuit further includes a second capacitor connected in parallel with the third resistor.

6. The transmission circuit according to claim 2, characterized in that: The signal enhancement circuit further includes a third capacitor, one end of the third capacitor is connected to the power input end of the driving module, and the other end of the third capacitor is connected to the ground end.

7. The transmission circuit according to claim 2, characterized in that: The signal enhancement circuit further includes an electrostatic suppressor, one end of which is connected to the other end of the first resistor, and the other end of which is connected to the ground.

8. The transmission circuit according to any one of claims 1 to 7, characterized in that: The power supply circuit includes a first conversion module, a second conversion module and a third conversion module, wherein: The input end of the first conversion module and the first input end of the second conversion module are power input ends of the transmission circuit, the output end of the first conversion module is connected to the second input end of the second conversion module, the output end of the second conversion module is connected to the input end of the third conversion module, and the output end of the third conversion module is connected to the power input end of the signal enhancement circuit; The first conversion module is used to convert the first DC power signal into a third DC power signal; The second conversion module is used to convert the third direct current signal into a fourth direct current signal; The third conversion module is used to convert the fourth direct current signal into a second direct current signal; The voltage of the first DC signal is greater than the voltage of the third DC signal, the voltage of the third DC signal is greater than the voltage of the fourth DC signal, and the voltage of the fourth DC signal is greater than the voltage of the second DC signal.

9. The transmission circuit according to claim 8, characterized in that: The first conversion module includes a fourth resistor and a fifth resistor, one end of the fourth resistor is the power input end of the transmission circuit, the other end of the fourth resistor is respectively connected to the second input end of the second conversion module and one end of the fifth resistor, and the other end of the fifth resistor is connected to the ground end.

10. The transmission circuit according to claim 9, characterized in that: The first conversion module further includes a fifth capacitor, and the fifth capacitor is connected in parallel with the fifth resistor.

11. The transmission circuit according to claim 8, characterized in that: The second conversion module includes a conversion unit, a first inductor and a fourth capacitor, wherein: The first input end of the conversion unit is the input end of the transmission circuit, the second input end of the conversion unit is connected to the output end of the first conversion module, the first output end of the conversion unit is respectively connected to one end of the first inductor and one end of the fourth capacitor, the other end of the fourth capacitor is connected to the second output end of the conversion unit, the other end of the first inductor is connected to the first input end of the third conversion module, and the third output end of the conversion unit is connected to the second input end of the third conversion module; The conversion unit is used to convert the third direct current signal into the fourth direct current signal.

12. The transmission circuit according to claim 8, characterized in that: The third conversion module includes a sixth resistor and a seventh resistor, one end of the sixth resistor is respectively connected to the first output end of the second conversion module and the power input end of the signal enhancement circuit, the other end of the sixth resistor is respectively connected to the second output end of the second conversion module and one end of the seventh resistor, and the other end of the seventh resistor is connected to the ground.

13. The transmission circuit according to claim 12, characterized in that: The third conversion module further includes a sixth capacitor, and the sixth capacitor is connected in parallel with the sixth resistor.

14. The transmission circuit according to claim 8, characterized in that: The power supply circuit further includes an eighth resistor, one end of which is respectively connected to the first output end of the second conversion module and the first input end of the third conversion module, and the other end of which is connected to the ground.

15. The transmission circuit according to claim 8, characterized in that: The power supply circuit further includes a first voltage stabilizing module, wherein the first voltage stabilizing module is connected to an input end of the first conversion module; The first voltage stabilization module is used to filter high-frequency noise in the first direct current signal to obtain a fifth direct current signal; The first conversion module is specifically configured to convert the fifth DC power signal into a third DC signal.

16. The transmission circuit according to claim 8, characterized in that: The power supply circuit further includes a second voltage stabilizing module, wherein the second voltage stabilizing module is respectively connected to the output end of the second conversion module and the input end of the third conversion module; The second voltage stabilization module is used to filter high-frequency noise in the fourth direct current signal to obtain a sixth direct current signal; The third conversion module is specifically configured to convert the sixth DC power signal into the second DC power signal.

17. A transmission device, characterized in that: The method comprises a first transmission line device, a second transmission line device and a transmission circuit as claimed in any one of claims 1 to 16, wherein: One end of the first transmission line device is the input end of the transmission device, the other end of the first transmission line device is connected to the input end of the transmission circuit, the output end of the transmission circuit is connected to one end of the second transmission line device, and the other end of the second transmission line device is the output end of the transmission device.

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