Power supply communication transmitting device, receiving device and system

Abstract

The invention relates to a power supply communication transmitting device, receiving device and system, and relates to the technical field of electronic communication. The system comprises a bus, a power supply communication transmitting device and a power supply communication receiving device. Wherein the power supply communication transmitting device comprises a data transmitting module and an H-bridge chip, and the data transmitting module is connected with the H-bridge chip; the first differential signal output end and the second differential signal output end of the H-bridge chip are connected with a power supply communication receiving device through a bus. The power supply communication receiving device comprises a power supply module, a voltage comparator and a receiving module microcontroller, the input end of the power supply module is connected with the power supply communication sending device through a first bus and a second bus, the first output end of the power supply module is connected with the power supply input end of the voltage comparator, and the second output end of the power supply module is connected with the receiving module microcontroller; the signal input end of the voltage comparator is connected with the power supply communication transmitting device through a bus, and the signal output end is connected with the receiving module microcontroller. According to the invention, the system hardware complexity can be reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic communication technology, and in particular to a power supply communication sending device, receiving device and system. Background Art

[0002] At present, in modern home appliances, with the trend of diversified functions, the electronic control system is becoming more and more complex, often requiring multiple circuit modules to jointly complete complex functions. Among the multiple circuit modules, there is information transmission and power supply between each other, and more connecting wires are required to realize the transmission of information and energy.

[0003] However, the large number of connecting wires makes the assembly of home appliances complex, while for the various circuit modules inside the home appliances, the amount of information transmitted between each other is not large, and the power consumed by the power supply is not large either.

[0004] Therefore, it is necessary to reduce the number of connecting wires, lower the cost of wires, and simplify the complexity of assembly on the basis of achieving information and energy transmission. Summary of the invention

[0005] Based on this, it is necessary to provide a power supply communication sending device, receiving device and system to address the above technical problems.

[0006] In a first aspect, a power supply communication sending device is provided, the device comprising a data sending module and an H-bridge chip; wherein:

[0007] The forward signal output end of the data sending module is connected to the forward signal input end of the H-bridge chip, and the reverse signal output end of the data sending module is connected to the reverse signal input end of the H-bridge chip, for sending two serial data signals to the H-bridge chip;

[0008] The first differential signal output terminal and the second differential signal output terminal of the H-bridge chip are respectively connected to the power supply communication receiving device through the first bus and the second bus, so as to convert the serial data signal into a differential signal and send it to the power supply communication receiving device through the first bus and the second bus.

[0009] As an optional implementation, the data sending module includes a sending module microcontroller and an inverter; wherein,

[0010] The serial data output terminal of the sending module microcontroller is connected to the positive input terminal of the H-bridge chip and the input terminal of the inverter;

[0011] The output end of the inverter is connected to the reverse input end of the H-bridge chip, and is used to invert the serial data signal output by the microcontroller of the sending module.

[0012] As an optional implementation, the device further includes a power supply; wherein,

[0013] The power supply end of the H-bridge chip is connected to the power supply for voltage and power amplification, and supplies power to the power supply communication receiving device through the first bus and the second bus.

[0014] As an optional implementation, the model of the H-bridge chip is TMI8260.

[0015] In a second aspect, a power supply communication receiving device is provided, the device comprising a power supply module, a voltage comparator and a receiving module microcontroller; wherein,

[0016] The input end of the power supply module is connected to the power supply communication sending device through the first bus and the second bus, the first output end of the power supply module is connected to the power input end of the voltage comparator, and the second output end is connected to the power end of the receiving module microcontroller, for respectively supplying power to the voltage comparator and the receiving module microcontroller;

[0017] The signal input end of the voltage comparator is connected to the power supply communication sending device through the first bus and the second bus, and the signal output end is connected to the serial data input end of the receiving module microcontroller, so as to modulate the differential signal output by the power supply communication sending device into a serial data signal and input it into the receiving module microcontroller.

[0018] As an optional implementation, the power supply module includes a rectifier bridge and a voltage stabilizer; wherein,

[0019] The input end of the rectifier bridge is connected to the power supply communication sending device through the first bus and the second bus, and is used to convert the random polarity voltage output by the power supply communication sending device into a single polarity DC voltage;

[0020] The output end of the rectifier bridge is respectively connected to the voltage input end of the voltage regulator and the voltage input end of the voltage comparator, so as to input a DC voltage to the voltage regulator and the voltage comparator;

[0021] The voltage output terminal of the voltage regulator is connected to the power supply terminal of the receiving module microcontroller, so as to supply power to the receiving module microcontroller.

[0022] As an optional implementation, the voltage regulator model is LM7805.

[0023] As an optional implementation, the power supply module further includes a first capacitor and a second capacitor; wherein,

[0024] The first end of the first capacitor is connected to the output end of the rectifier bridge, and the second end is grounded, and is used to smooth and reduce noise of the DC voltage output by the rectifier bridge;

[0025] The first end of the second capacitor is connected to the voltage output end of the voltage regulator, and the second end is grounded, so as to reduce the fluctuation of the DC voltage output by the voltage regulator.

[0026] As an optional implementation, the device further includes a first voltage-dividing resistor, a second voltage-dividing resistor and a third voltage-dividing resistor; wherein,

[0027] A first end of the first voltage-dividing resistor is connected to the first bus, and a second end thereof is connected to a positive input end of a signal input end of the voltage comparator;

[0028] A first end of the second voltage-dividing resistor is connected to the second bus, and a second end thereof is connected to a negative input end of a signal input end of the voltage comparator;

[0029] The first end of the third voltage-dividing resistor is connected to the positive input end of the voltage comparator, and the second end is connected to the negative input end of the voltage comparator, and is used to divide the voltage between the first bus and the second bus into the operating voltage range of the voltage comparator.

[0030] In a third aspect, a power supply communication system is provided, the system comprising a first bus, a second bus, a power supply communication sending device as described in any one of the first aspect, and a power supply communication receiving device as described in any one of the second aspect.

[0031] The present application provides a power supply communication sending device, receiving device and system. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects: the system includes a first bus, a second bus, a power supply communication sending device and a power supply communication receiving device. Among them, the power supply communication sending device includes a data sending module and an H-bridge chip, the forward signal output end of the data sending module is connected to the forward signal input end of the H-bridge chip, and the reverse signal output end of the data sending module is connected to the reverse signal input end of the H-bridge chip, which is used to send two serial data signals to the H-bridge chip; the first differential signal output end and the second differential signal output end of the H-bridge chip are respectively connected to the power supply communication receiving device through the first bus and the second bus, which is used to convert the serial data signal into a differential signal, and send it to the power supply communication receiving device through the first bus and the second bus. The power supply communication receiving device includes a power supply module, a voltage comparator and a receiving module microcontroller, the input end of the power supply module is connected to the power supply communication sending device through the first bus and the second bus, the first output end of the power supply module is connected to the power input end of the voltage comparator, and the second output end is connected to the power end of the receiving module microcontroller, which is used to supply power to the voltage comparator and the receiving module microcontroller respectively; the signal input end of the voltage comparator is connected to the power supply communication sending device through the first bus and the second bus, and the signal output end is connected to the serial data input end of the receiving module microcontroller, which is used to mediate the differential signal output by the power supply communication sending device into a serial data signal and input it into the receiving module microcontroller. The present application provides a reliable, efficient and easy-to-maintain communication circuit solution through the comprehensive design of differential signal transmission, integrated power supply and data transmission, H-bridge drive and voltage division decoding network. The line sequence of the two buses can be arbitrarily connected without distinguishing polarity, which reduces the complexity of system hardware.

[0032] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a power supply communication system provided in an embodiment of the present application;

[0035] Figure 2A schematic diagram of the structure of a power supply communication sending device provided in an embodiment of the present application;

[0036] Figure 3 A structural diagram of a data sending module provided in an embodiment of the present application;

[0037] Figure 4 A schematic diagram of the structure of another power supply communication sending device provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of the structure of a power supply communication receiving device provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of the structure of a power supply module provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the structure of another power supply module provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of the structure of another power supply communication receiving device provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of the structure of an example of a power supply communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] The present application embodiment provides a power supply communication system. Figure 1 As shown, the power supply communication system includes a first bus A, a second bus B, a power supply communication sending device 1 and a power supply communication receiving device 2. The power supply communication sending device 1 and the power supply communication receiving device 2 are connected through the first bus A and the second bus B. The power supply communication sending device 1 is used to send serial data signals and power to the power supply communication receiving device 2, and the power supply communication receiving device 2 is used to receive the serial data signal and interpret the data information. The first bus A and the second bus B serve as data transmission paths and also serve as power supply paths for the power supply communication receiving device 2.

[0045] The following will describe in detail a power supply communication sending device provided in an embodiment of the present application in combination with a specific implementation manner. Figure 2 A schematic diagram of the structure of a power supply communication sending device provided in an embodiment of the present application, such as Figure 2As shown, the power supply communication sending device 1 includes a data sending module 11 and an H-bridge chip 12; among them,

[0046] The positive signal output end of the data sending module 11 is connected to the positive signal input end FI of the H-bridge chip 12, and the negative signal output end of the data sending module 11 is connected to the negative signal input end BI of the H-bridge chip 12, for sending two-way serial data signals to the H-bridge chip 12.

[0047] The first differential signal output end BO and the second differential signal output end FO of the H-bridge chip 12 are respectively connected to the power supply communication receiving device through the first bus A and the second bus B, for converting the serial data signal into a differential signal and sending it to the power supply communication receiving device 2 through the first bus A and the second bus B.

[0048] In implementation, the first bus A and the second bus B are two lines (or two ports) for differential signal transmission, and the role is to transmit the serial data signal from the power supply communication sending device 1 to the power supply communication receiving device 2. The voltage difference (A - B) between the first bus A and the second bus B represents the logical state of the serial data signal: for example, when A > B, it represents a logical high level (1), and when A < B, it represents a logical low level (0). The input end of the H-bridge chip 12 includes a positive signal input end FI and a negative signal input end BI. The H-bridge chip 12 can convert the two-way serial data signals (input by FI and BI) sent by the data sending module 11 into differential signals of the first bus A and the second bus B to achieve bipolar output (i.e., forward and reverse drive) of the bus signal.

[0049] As an optional implementation manner, Figure 3 This is a schematic structural diagram of a data sending module provided by an embodiment of the present application. As Figure 3 shown, the data sending module 11 includes a sending module microcontroller 111 and an inverter 112; among them,

[0050] The serial data output end TXD of the sending module microcontroller 111 is connected to the positive input end FI of the H-bridge chip 12 and the input end of the inverter 112.

[0051] The output end of the inverter 112 is connected to the negative input end BI of the H-bridge chip 12, for inverting the serial data signal output by the sending module microcontroller 111.

[0052] In implementation, the inverter 112 can invert the serial data signal output by the sending module microcontroller 111 for use by the negative input end BI of the H-bridge chip 12, and the GND end of the sending module microcontroller 111 is grounded.

[0053] As an optional implementation, if the sending module microcontroller 111 can directly output two complementary positive and negative signals, the inverter 112 can be omitted, such as: the sending module microcontroller 111 has a built-in advanced PWM (APWM) module that supports outputting complementary signals.

[0054] As an optional implementation, Figure 4 A schematic diagram of the structure of another power supply communication sending device provided in an embodiment of the present application, such as Figure 4 As shown, the power supply communication sending device also includes a power supply 13; wherein,

[0055] The power supply terminal VCC of the H-bridge chip 12 is connected to the power supply 13 for voltage and power amplification, and supplies power to the power communication receiving device 2 through the first bus A and the second bus B.

[0056] In implementation, the H-bridge chip 12 can also drive a load, especially a high current or high power load. The H-bridge chip 12 can provide a high current output for the bus signal through an external power supply 13 (such as +12V), and the GND terminal of the H-bridge chip 12 is grounded to ensure that the load works normally.

[0057] As an optional implementation, the model of the H-bridge chip 12 is TMI8260.

[0058] The following will describe in detail a power supply communication receiving device provided in an embodiment of the present application in combination with a specific implementation manner. Figure 5 A schematic diagram of a power supply communication receiving device provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the power supply communication receiving device 2 includes a power supply module 21, a voltage comparator 22 and a receiving module microcontroller 23; wherein,

[0059] The input end of the power supply module 21 is connected to the power supply communication sending device 1 through the first bus A and the second bus B, the first output end of the power supply module 21 is connected to the power input end of the voltage comparator 22, and the second output end is connected to the power supply end VCC of the receiving module microcontroller 23, for respectively supplying power to the voltage comparator 22 and the receiving module microcontroller 23;

[0060] The signal input end of the voltage comparator 22 is connected to the power supply communication sending device 1 through the first bus A and the second bus B, and the signal output end is connected to the serial data input end RXD of the receiving module microcontroller 23, which is used to modulate the differential signal output by the power supply communication sending device 1 into a serial data signal and input it to the receiving module microcontroller 23.

[0061] As an optional implementation, Figure 6 A schematic diagram of a power supply module provided in an embodiment of the present application is shown in FIG. Figure 6As shown, the power supply module 21 includes a rectifier bridge 211 and a voltage regulator 212; wherein,

[0062] The input end of the rectifier bridge 211 is connected to the power supply communication sending device 1 through the first bus A and the second bus B, and is used to convert the random polarity voltage output by the power supply communication sending device 1 into a single polarity DC voltage;

[0063] The output end of the rectifier bridge 211 is respectively connected to the voltage input end Vin of the voltage regulator 212 and the voltage input end of the voltage comparator 22, for inputting a DC voltage to the voltage regulator 212 and the voltage comparator 22;

[0064] The voltage output terminal Vout of the voltage regulator 212 is connected to the power supply terminal VCC of the receiving module microcontroller 23 for supplying power to the receiving module microcontroller 23, and the GND terminal is grounded.

[0065] As an optional implementation, the voltage regulator 212 is LM7805.

[0066] As an optional implementation, Figure 7 A schematic diagram of the structure of another power supply module provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, the power supply module 21 also includes a first capacitor 213 and a second capacitor 214; wherein,

[0067] A first end of the first capacitor 213 is connected to the output end of the rectifier bridge 211, and a second end is grounded, and is used to smooth and reduce noise of the DC voltage output by the rectifier bridge 211;

[0068] A first end of the second capacitor 214 is connected to the voltage output terminal Vout of the regulator 212 , and a second end of the second capacitor 214 is grounded, so as to reduce fluctuations in the DC voltage output by the regulator 212 .

[0069] In implementation, the rectifier bridge 211 converts the random polarity voltage output by the power supply communication sending device 1 into a single polarity DC voltage, but the output DC voltage is still a pulsating signal, and the first capacitor 213 can play a filtering role, smoothing the pulsating signal into a DC voltage, reducing voltage fluctuations, and in addition, the high-frequency noise in the circuit comes from the bus or the rectifier bridge, and the first capacitor 213 can suppress these high-frequency interferences and protect the normal operation of the voltage stabilizer 212. The voltage stabilizer 212 can convert the input unstable voltage into a stable DC voltage (such as +5V). However, due to load changes or the characteristics of the voltage stabilizer 212 itself, there may be slight fluctuations in the output voltage, and the second capacitor 214 plays an energy storage role, which can instantly compensate for the current changes of the load and reduce the ripple of the output voltage. The filtering effect of the second capacitor 214 can make the output of the voltage stabilizer 212 purer and reduce the interference of circuit noise to subsequent circuits.

[0070] As an optional implementation, the first capacitor 213 and the second capacitor 214 may be capacitors with a capacitance value of 100 μF.

[0071] As an optional implementation, Figure 8 A schematic diagram of the structure of another power supply communication receiving device provided in an embodiment of the present application, such as Figure 8 As shown, the power supply communication receiving device 2 further includes a first voltage-dividing resistor 24, a second voltage-dividing resistor 25 and a third voltage-dividing resistor 26; wherein,

[0072] A first end of the first voltage-dividing resistor 24 is connected to the first bus A, and a second end thereof is connected to a positive input end of a signal input end of the voltage comparator 22;

[0073] A first end of the second voltage-dividing resistor 25 is connected to the second bus B, and a second end is connected to a negative input end of the signal input end of the voltage comparator 22;

[0074] The third voltage-dividing resistor 26 has a first end connected to the positive input terminal of the voltage comparator 22 and a second end connected to the negative input terminal of the voltage comparator 22 for dividing the voltage between the first bus A and the second bus B into the working voltage range of the voltage comparator 22 .

[0075] In implementation, the first voltage-dividing resistor 24 is connected between the first bus A and the positive input terminal (+) of the voltage comparator 22, and forms a voltage-dividing network together with the second voltage-dividing resistor 25 and the third voltage-dividing resistor 26. The second voltage-dividing resistor 25 is connected between the second bus B and the negative input terminal (-) of the voltage comparator 22, and cooperates with the third voltage-dividing resistor 26 to divide and isolate the signal. The third voltage-dividing resistor 26 is connected to the middle node of the first voltage-dividing resistor 24 and the second voltage-dividing resistor 25. The first voltage-dividing resistor 24, the second voltage-dividing resistor 25 and the third voltage-dividing resistor 26 extract part of the signal voltage from the first bus A and the second bus B respectively, forming a reference signal related to the voltage difference between the first bus A and the second bus B, and dividing the high voltage difference signal (e.g., 12V) between the first bus A and the second bus B to a voltage suitable for the input terminal of the voltage comparator 22 (usually 0-5V or lower), thereby ensuring that the voltage comparator 22 can safely and accurately detect the logic level of the signal.

[0076] As an optional implementation, the resistance values ​​of the first voltage-dividing resistor 24 and the second voltage-dividing resistor 25 can be equal to maintain symmetry and reduce common-mode noise in the differential signal, such as 2 kΩ, to limit the signal current on the bus and prevent overloading. The resistance value of the third voltage-dividing resistor 26 can be smaller than the resistance value of the first voltage-dividing resistor 24 and the second voltage-dividing resistor 25, such as 330 Ω, to form a stable voltage reference without consuming too much current.

[0077] As an optional implementation, Fig. 9 This is a schematic diagram of an example of a power supply communication system provided in an embodiment of the present application, such as Fig. 9 As shown, the details are as follows:

[0078] 111 is a sending module microcontroller, and serial data is output from the TXD terminal, one path is connected to the positive input terminal FI of the H-bridge chip 12, and the other path is inverted by the inverter 112 and connected to the reverse input terminal BI of the H-bridge chip 12. The output terminals A and B of the H-bridge chip 12 are bus signals, and their positive and negative polarities are associated with the high and low levels of the TXD signal, and the voltage difference between the A and B signals is approximately the voltage 12V of the power supply terminal of the H-bridge chip 12. The H-bridge chip 12 has a strong current output capability and can drive a heavier load. The rectifier bridge 211 converts the random polarity power supply at both ends of the bus A and B into a single polarity power supply, which provides power to the voltage regulator 212 at the rear on the one hand, and provides power to the voltage comparator 22 on the other hand. The first end of the first capacitor 213 is connected to the output end of the rectifier bridge 211, and the second end is grounded, which is used to smooth and reduce the noise of the DC voltage output by the rectifier bridge 211. The first end of the second capacitor 214 is connected to the voltage output end Vout of the voltage regulator 212, and the second end is grounded, which is used to reduce the fluctuation of the DC voltage output by the voltage regulator 212. After the voltage regulator 212 stabilizes the voltage, it provides a +5V power supply to the receiving module microcontroller 23. The positive and negative polarities on the A and B buses represent the signal level of the serial data. The A and B signals are connected to the input end of the voltage comparator 22 through the first voltage divider resistor 24, the second voltage divider resistor 25 and the third voltage divider resistor 26, and the signal on the bus is demodulated and output to the receiving module microcontroller 23, and the receiving module microcontroller 23 interprets the data information.

[0079] The embodiment of the present application provides a power supply communication system, the system includes a first bus A, a second bus B, a power supply communication sending device 1 and a power supply communication receiving device 2. Among them, the power supply communication sending device 1 includes a data sending module 11 and an H-bridge chip 12, the forward signal output end of the data sending module 11 is connected to the forward signal input end FI of the H-bridge chip 12, and the reverse signal output end of the data sending module 11 is connected to the reverse signal input end BI of the H-bridge chip 12, which is used to send two serial data signals to the H-bridge chip 12, and the first differential signal output end BO and the second differential signal output end FO of the H-bridge chip 12 are connected to the power supply communication receiving device through the first bus A and the second bus B, respectively, for converting the serial data signal into a differential signal, and sending it to the power supply communication receiving device 2 through the first bus A and the second bus B. The power supply communication receiving device 2 includes a power supply module 21, a voltage comparator 22 and a receiving module microcontroller 23. The input end of the power supply module 21 is connected to the power supply communication sending device 1 through the first bus A and the second bus B. The first output end of the power supply module 21 is connected to the power input end of the voltage comparator 22, and the second output end is connected to the power supply end VCC of the receiving module microcontroller 23, which is used to supply power to the voltage comparator 22 and the receiving module microcontroller 23 respectively; the signal input end of the voltage comparator 22 is connected to the power supply communication sending device 1 through the first bus A and the second bus B, and the signal output end is connected to the serial data input end RXD of the receiving module microcontroller 23, which is used to mediate the differential signal output by the power supply communication sending device 1 into a serial data signal and input it to the receiving module microcontroller 23. The embodiment of the present application provides a reliable, efficient and easy-to-maintain communication circuit solution through the comprehensive design of differential signal transmission, integrated power supply and data transmission, H-bridge drive and voltage division decoding network. The line sequence of the two buses can be arbitrarily connected without distinguishing polarity, which reduces the complexity of system hardware.

[0080] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can refer to each other, and each embodiment focuses on the differences from other embodiments. For related points, please refer to the description of other method embodiments.

[0081] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0082] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0083] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0084] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A power supply communication sending device, characterized in that: The device comprises a data sending module and an H-bridge chip; wherein, The forward signal output end of the data sending module is connected to the forward signal input end of the H-bridge chip, and the reverse signal output end of the data sending module is connected to the reverse signal input end of the H-bridge chip, for sending two serial data signals to the H-bridge chip; The first differential signal output terminal and the second differential signal output terminal of the H-bridge chip are respectively connected to the power supply communication receiving device through the first bus and the second bus, so as to convert the serial data signal into a differential signal and send it to the power supply communication receiving device through the first bus and the second bus.

2. The device according to claim 1, characterized in that The data sending module includes a sending module microcontroller and an inverter; wherein, The serial data output terminal of the sending module microcontroller is connected to the positive input terminal of the H-bridge chip and the input terminal of the inverter; The output end of the inverter is connected to the reverse input end of the H-bridge chip, and is used to invert the serial data signal output by the microcontroller of the sending module.

3. The device according to claim 1, characterized in that The device also includes a power supply; wherein, The power supply end of the H-bridge chip is connected to the power supply for voltage and power amplification, and supplies power to the power supply communication receiving device through the first bus and the second bus.

4. The device according to claim 1, characterized in that The model of the H-bridge chip is TMI8260.

5. A power supply communication receiving device, characterized in that: The device comprises a power supply module, a voltage comparator and a receiving module microcontroller; wherein, The input end of the power supply module is connected to the power supply communication sending device through the first bus and the second bus, the first output end of the power supply module is connected to the power input end of the voltage comparator, and the second output end is connected to the power end of the receiving module microcontroller, for respectively supplying power to the voltage comparator and the receiving module microcontroller; The signal input end of the voltage comparator is connected to the power supply communication sending device through the first bus and the second bus, and the signal output end is connected to the serial data input end of the receiving module microcontroller, so as to modulate the differential signal output by the power supply communication sending device into a serial data signal and input it into the receiving module microcontroller.

6. The device according to claim 5, characterized in that The power supply module includes a rectifier bridge and a voltage stabilizer; wherein, The input end of the rectifier bridge is connected to the power supply communication sending device through the first bus and the second bus, and is used to convert the random polarity voltage output by the power supply communication sending device into a single polarity DC voltage; The output end of the rectifier bridge is respectively connected to the voltage input end of the voltage regulator and the voltage input end of the voltage comparator, so as to input a DC voltage to the voltage regulator and the voltage comparator; The voltage output terminal of the voltage regulator is connected to the power supply terminal of the receiving module microcontroller, so as to supply power to the receiving module microcontroller.

7. The device according to claim 6, characterized in that The voltage regulator model is LM7805.

8. The device according to claim 6, characterized in that The power supply module also includes a first capacitor and a second capacitor; wherein, The first end of the first capacitor is connected to the output end of the rectifier bridge, and the second end is grounded, and is used to smooth and reduce noise of the DC voltage output by the rectifier bridge; The first end of the second capacitor is connected to the voltage output end of the voltage regulator, and the second end is grounded, so as to reduce the fluctuation of the DC voltage output by the voltage regulator.

9. The device according to claim 5, characterized in that The device further comprises a first voltage-dividing resistor, a second voltage-dividing resistor and a third voltage-dividing resistor; wherein, A first end of the first voltage-dividing resistor is connected to the first bus, and a second end thereof is connected to a positive input end of a signal input end of the voltage comparator; A first end of the second voltage-dividing resistor is connected to the second bus, and a second end thereof is connected to a negative input end of a signal input end of the voltage comparator; The first end of the third voltage-dividing resistor is connected to the positive input end of the voltage comparator, and the second end is connected to the negative input end of the voltage comparator, and is used to divide the voltage between the first bus and the second bus into the operating voltage range of the voltage comparator.

10. A power supply communication system, characterized in that: The system includes a first bus, a second bus, a power supply communication sending device as described in any one of claims 1 to 4, and a power supply communication receiving device as described in any one of claims 5 to 9.

Images