Point-to-multipoint data broadcasting device based on high-power HPLC (High Performance Liquid Chromatography) communication

Abstract

The utility model discloses a point-to-multipoint data broadcasting device based on high-power HPLC (High Performance Liquid Chromatography) communication. The point-to-multipoint data broadcasting device comprises a main control unit, a power amplifier circuit and a coupling circuit, the first end of the main control unit is used for receiving input data, the second end of the main control unit is connected with the first end of the power amplifier circuit, the first end of the coupling circuit is connected with the second end of the power amplifier circuit, the second end of the coupling circuit is connected with the three-phase power line terminal, and the three-phase power line terminal is connected with the mains supply through a cable; the main control unit processes input data to generate two paths of HPLC signals and transmits the two paths of HPLC signals to the power amplifier circuit; the power amplifier circuit generates two paths of amplification signals according to the two paths of HPLC signals and transmits the two paths of amplification signals to the coupling circuit; the coupling circuit generates carrier coupling signals according to the two paths of amplified signals and transmits the carrier coupling signals to the three-phase power line terminal. The STA modules can be upgraded in batches through commercial power communication, the upgrading time is greatly shortened, the production efficiency is improved, and meanwhile the coverage range of communication upgrading is larger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of HPLC communication, and particularly to a device for point-to-multipoint broadcast data based on high-power HPLC communication. BACKGROUND

[0002] With the popularity of wireless network technology, the STA (Station) module has become an indispensable part of modern life. Almost all portable electronic devices support wireless network connection, resulting in a sharp increase in the number of STAs. Before being used on site or sold in large quantities, the STA module often needs to be updated in large quantities and synchronously.

[0003] In the prior art, the CCO (Central Coordinator) is often used for online upgrading after networking, or a serial port tooling board is used for upgrading. However, online upgrading through the CCO usually depends on a whitelist and networking, and if there is a problem with the STA program, the networking is unsuccessful, and then the upgrading cannot be performed. If the network scale is large and the hierarchy is high, the upgrading time is relatively long, and the success rate of upgrading is not high. In addition, the use of a serial port tooling board for upgrading is not suitable for STA modules on site. The above methods all limit the actual use and affect the production efficiency. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to provide a device for point-to-multipoint broadcast data based on high-power HPLC communication, so as to solve the technical problem of low efficiency of batch upgrading of the STA module in the prior art. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The application provides a device for point-to-multipoint broadcast data based on high-power HPLC communication, which comprises a main control unit, a power amplifier circuit and a coupling circuit; a first end of the main control unit is used for receiving input data, a second end of the main control unit is connected with a first end of the power amplifier circuit, a first end of the coupling circuit is connected with a second end of the power amplifier circuit, and a second end of the coupling circuit is connected with a three-phase power line terminal; the three-phase power line terminal is connected with a commercial power supply through a cable; the main control unit is configured to process the input data to generate two HPLC signals, and transmit the HPLC signals to the power amplifier circuit; the power amplifier circuit is configured to generate two amplified signals according to the two HPLC signals, and transmit the two amplified signals to the coupling circuit; and the coupling circuit is configured to generate a carrier coupling signal according to the two amplified signals, and transmit the carrier coupling signal to the three-phase power line terminal, wherein the carrier coupling signal is used for upgrading a STA module connected with the commercial power supply.

[0007] In some embodiments, the main control unit comprises a carrier main control chip which downloads and processes the input data through a UART serial port to generate two HPLC signals which are output via a carrier emission port.

[0008] In some embodiments, the main control unit comprises a voltage stabilizing circuit and a TCXO crystal oscillator; one end of the voltage stabilizing circuit is connected with a direct current power supply, and the other end of the voltage stabilizing circuit is connected with a VDD end of the carrier main control chip for supplying power to the carrier main control chip; one end of the TCXO crystal oscillator is connected with a power supply voltage, and the other end of the TCXO crystal oscillator is connected with an OSC_IN end of the carrier main control chip for stabilizing the output frequency of the two HPLC signals.

[0009] In some embodiments, the power amplifier circuit comprises a first carrier circuit, a second carrier circuit and a carrier power combiner; the first carrier circuit and the second carrier circuit respectively receive one of the HPLC signals, each generate one power amplifier signal, and the first carrier circuit and the second carrier circuit respectively input one of the power amplifier signals to the carrier power combiner; and the carrier power combiner generates two amplified signals according to the two power amplifier signals and outputs the two amplified signals.

[0010] In some embodiments, the power amplifier circuit includes a first capacitor, a second capacitor, a third capacitor and a fourth capacitor; a first end of the first capacitor and a first end of the third capacitor are both connected to a TX_N end of the carrier transmission port, wherein a second end of the first capacitor is connected to the first carrier circuit, and a second end of the third capacitor is connected to the second carrier circuit; a first end of the second capacitor and a first end of the fourth capacitor are both connected to a TX_P end of the carrier transmission port, wherein a second end of the second capacitor is connected to the first carrier circuit, and a second end of the fourth capacitor is connected to the second carrier circuit.

[0011] In some embodiments, the coupling circuit includes a carrier coupler for coupling the amplified signals, a fifth capacitor, a sixth capacitor and a seventh capacitor; a first end and a second end of the carrier coupler are both connected to the carrier power combiner for receiving two paths of the amplified signals; a third end of the carrier coupler is connected to one end of the fifth capacitor, one end of the sixth capacitor and one end of the seventh capacitor, wherein the other end of the fifth capacitor is connected to an A end of the three-phase power line terminal, the other end of the sixth capacitor is connected to a B end of the three-phase power line terminal, and the other end of the seventh capacitor is connected to a C end of the three-phase power line terminal; a fourth end of the carrier coupler is connected to an N end of the three-phase power line terminal.

[0012] In some embodiments, the carrier master chip is a SOC type chip integrating an MCU module and an HPLC module, wherein the MCU module adopts a processor with a RISC-V core, and the main frequency of the MCU module is 200MHz.

[0013] In some embodiments, the carrier coupling signal carries a beacon timestamp for conveying a network reference time, and the STA module performs local clock synchronization based on the beacon timestamp.

[0014] In some embodiments, the TCXO crystal oscillator is 25MHz.

[0015] In some embodiments, the carrier master chip is connected to a DP9 serial port of a host computer to receive the upgraded firmware of the STA module.

[0016] Implementing one of the technical solutions in the above technical solutions of the present application has the following advantages or beneficial effects: the device for point-to-multipoint broadcast data based on high-power HPLC communication in the present application can obtain HPLC signals by processing input data such as upgrade program packages, and then send the signals to the three-phase power line of the city power after power amplification and coupling, thereby enabling batch upgrade of multiple STA modules through city power communication, greatly compressing the upgrade time and improving the production efficiency, and the coverage of the communication upgrade is larger. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. The drawings are as follows:

[0018] Figure 1 is a structural schematic diagram of the point-to-multipoint broadcast data device based on high-power HPLC communication of the embodiments of the present application;

[0019] Figure 2 is a schematic diagram of signal transmission of the point-to-multipoint broadcast data device based on high-power HPLC communication of the embodiments of the present application.

[0020] In the figure: 1, point-to-multipoint broadcast data device based on high-power HPLC communication; 10, main control unit; 20, power amplifier circuit; 30, coupling circuit; 11, carrier wave main control chip; 12, voltage stabilizing circuit; 13, TCXO crystal oscillator; 21, first carrier wave circuit; 22, second carrier wave circuit; 23, carrier wave power synthesizer; 31, carrier wave coupler. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present application more clear, the various exemplary embodiments to be described below will be described with reference to the corresponding drawings, which constitute a part of the exemplary embodiments, and various exemplary embodiments that can be used to implement the present application are described. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation described in the following exemplary embodiments does not represent all the implementations consistent with the present disclosure. It should be understood that they are only examples of processes, methods and devices, etc. consistent with some aspects of the present disclosure as described in the appended claims, and other embodiments can be used, or structural and functional modifications can be made to the embodiments listed herein, without departing from the scope and spirit of the present application.

[0022] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse" and the like indicate the orientation or positional relationship based on the drawings shown, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the elements referred to must have a particular orientation, be constructed and operated in a particular orientation. The terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "a plurality of" means two or more. The terms "connected", "connected" should be broadly understood, for example, it can be fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, communication connection, direct connection, indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In order to illustrate the technical solutions described in the present application, the following will be described by specific examples, only showing the part related to the embodiment of the present application.

[0024] As shown in Figure 1 The present application provides a device 1 for broadcasting data based on point-to-multipoint high-power HPLC communication, which comprises a master control unit 10, a power amplifier circuit 20 and a coupling circuit 30.

[0025] In some embodiments, the master control unit 10 can be configured to process the input data to generate two-way HPLC signals, and transmit the HPLC signals to the power amplifier circuit 20. The input data can be an upgrade program package, and the present application can communicate through HPLC (low-voltage power line high-speed carrier communication), that is, broadcast the upgrade program package through HPLC, so that the STA module receiving the HPLC signal is upgraded.

[0026] In some embodiments, the power amplifier circuit 20 can be configured to generate two-way amplified signals according to the two-way HPLC signals, and transmit the two-way amplified signals to the coupling circuit 30. The power amplifier circuit 20 can perform power amplification on the HPLC signal to obtain two-way amplified signals.

[0027] In some embodiments, the coupling circuit 30 can be configured to generate a carrier coupling signal according to the two-way amplified signals, and transmit the carrier coupling signal to a three-phase power line terminal, wherein the carrier coupling signal is used to upgrade the STA module connected with the mains. The three-phase power line includes three different phases, i.e., A phase, B phase and C phase, wherein the A phase, B phase and C phase are three alternating current sources with an electrical angle of 120 degrees. Accordingly, the three-phase power line terminal can include an A terminal connected with the A phase, a B terminal connected with the B phase and a C terminal connected with the C phase, and the carrier coupling signal of the coupling circuit 30 can be transmitted to the A terminal and / or the B terminal and / or the C terminal of the three-phase power line terminal. The three-phase power line terminal further includes an N terminal, which can be connected with the ground wire of the mains. The STA module can be connected with the A phase or the B phase or the C phase of the mains, and the ground wire. Therefore, the application can transmit the carrier coupling signal to the STA module through the mains to upgrade the STA module.

[0028] In some embodiments, the first end of the main control unit 10 can be used to receive input data, the second end of the main control unit 10 can be connected with the first end of the power amplifier circuit 20, the first end of the coupling circuit 30 can be connected with the second end of the power amplifier circuit 20, and the second end of the coupling circuit 30 can be connected with the three-phase power line terminal, wherein the three-phase power line terminal can be connected with the mains through a cable, i.e., the three-phase power line of the mains.

[0029] In some embodiments, as shown in FIG. 1, the main control unit 10 can include a carrier main control chip 11, which downloads and processes the input data through the UART serial port, and generates two-way HPLC signals output via the carrier transmitting port. The carrier transmitting port can include a TX_N terminal and a TX_P terminal, which are respectively used to transmit one-way HPLC signals. Figure 2

[0030] In some embodiments, the carrier main control chip 11 can be a SOC type chip integrating an MCU module and an HPLC module, wherein the MCU module adopts a processor with a RISC-V core, and the main frequency of the MCU module is 200 MHz. The MCU module can be configured to process the input data, and the generated HPLC signals are sent via the HPLC module.

[0031] In some embodiments, the main control unit 10 can be communicatively connected with a host computer for obtaining input data. In some embodiments, the carrier main control chip 11 can be connected with the DP9 serial port of the host computer to receive the upgrade firmware of the STA module, i.e., the input data.

[0032] ​In some embodiments, the carrier master chip 11 is internally integrated with a 32-bit MCU module. Thus, the analog front-end circuit, the hardware physical layer and the various functions and applications required by the above protocol layers can be implemented on a single carrier master chip 11, thereby completing the modulation and demodulation of the PLC (Power Line Carrier) signal and the protocol layer processing. The transmission signal frequency range can be from 0.2 MHz to 12 MHz, and the highest support can be 411 sub-HPLC modules, i.e., STA modules. The sub-HPLC modules support BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying) and 16QAM (16-Quadrature Amplitude Modulation) mapping to realize different rate modes, and the physical layer can reach a transmission speed of 12 Mbps at the highest.

[0033] In some embodiments, the master unit 10 can include a voltage stabilizing circuit 12 and a TCXO crystal oscillator 13. One end of the voltage stabilizing circuit 12 can be connected to a direct current power supply, and the other end of the voltage stabilizing circuit 12 can be connected to the VDD end of the carrier master chip 11 for supplying power to the carrier master chip 11.

[0034] In some embodiments, one end of the TCXO crystal oscillator 13 can be connected to a power supply voltage, and the other end of the TCXO crystal oscillator 13 can be connected to the OSC_IN end of the carrier master chip 11 for stabilizing the output frequency of the two-way HPLC signal.

[0035] In some embodiments, the TCXO crystal oscillator 13 can be 25 MHz. The master unit 10 can use the TCXO crystal oscillator 13 as a clock source, and the TCXO crystal oscillator 13 is a temperature-compensated crystal oscillator with a frequency error of ±2 PPM in the range of -40℃ to +80℃. Thus, the output HPLC signal frequency can be accurate, thereby ensuring the stability and reliability of the device.

[0036] In some embodiments, the power amplifier circuit 20 can include a first carrier circuit 21, a second carrier circuit 22 and a carrier power combiner 23. The first carrier circuit 21 and the second carrier circuit 22 can respectively receive one-way HPLC signals, each generating one-way power amplifier signals. The first carrier circuit 21 and the second carrier circuit 22 respectively input one-way power amplifier signals to the carrier power combiner 23, and the carrier power combiner 23 can generate two-way amplified signals according to the two-way power amplifier signals and output them. The power gain of the carrier power combiner 23 after combination is 6 dB to 9 dB.

[0037] In some embodiments, the first end of the first carrier circuit 21 and the first end of the second carrier circuit 22 can be connected with the carrier transmitting port of the carrier master chip 11, and the second end of the first carrier circuit 21 and the second end of the second carrier circuit 22 can be connected with the receiving end of the carrier power combiner 23, wherein the output end of the carrier power combiner 23 can be connected with the coupling circuit 30. The HPLC signal and the power amplifier signal can be quadrature modulation signals.

[0038] In some embodiments, the first carrier circuit 21 and the second carrier circuit 22 can be connected with a direct current power supply.

[0039] In some embodiments, the power amplifier circuit 20 can include a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4. The first end of the first capacitor C1 and the first end of the third capacitor C3 can be connected with the TX_N end of the carrier transmitting port, wherein the second end of the first capacitor C1 can be connected with the first carrier circuit 21, and the second end of the third capacitor C3 can be connected with the second carrier circuit 22. The first end of the second capacitor C2 and the first end of the fourth capacitor C4 can be connected with the TX_P end of the carrier transmitting port, wherein the second end of the second capacitor C2 can be connected with the first carrier circuit 21, and the second end of the fourth capacitor C4 can be connected with the second carrier circuit 22.

[0040] In some embodiments, the coupling circuit 30 can include a carrier coupler 31 for coupling the amplified signals, a fifth capacitor C5, a sixth capacitor C6 and a seventh capacitor C7. The first end and the second end of the carrier coupler 31 can be connected with the carrier power combiner 23 for receiving two-way amplified signals; the third end of the carrier coupler 31 can be connected with one end of the fifth capacitor C5, one end of the sixth capacitor C6 and one end of the seventh capacitor C7, wherein the other end of the fifth capacitor C5 can be connected with the A end of the three-phase power line terminal, the other end of the sixth capacitor C6 can be connected with the B end of the three-phase power line terminal, and the other end of the seventh capacitor C7 can be connected with the C end of the three-phase power line terminal. The fourth end of the carrier coupler 31 can be connected with the N end of the three-phase power line terminal. In this case, the coupling circuit 30 can couple the amplified signals and generate carrier coupling signals at the A end and / or the B end and / or the C end of the three-phase power line terminal, so that the carrier coupling signals can be transmitted regardless of whether the A end and the N end, or the B end and the N end, or the C end and the N end are connected.

[0041] In some embodiments, the carrier coupling signal can carry a beacon time stamp (BTS) for conveying a network time base (NTB), and the STA module can perform local clock synchronization based on the beacon time stamp. In this way, the reception success rate can be improved.

[0042] The device 1 of the embodiment of the present application can improve the coverage range by sending the upgrade package through A / B / C three-phase transmission. The device 1 of the embodiment of the present application can be installed at the transformer station to cover the whole transformer area.

[0043] Table 1 compares the common transformer area with 200 users as an example.

[0044] Scheme Coverage Upgrade times Total upgrade duration STA general broadcast station About 200 meters 2-3 times 30 minutes-45 minutes CCO online upgrade All areas 1 time 30 minutes-1 hour The device of the present application All areas 1 time 10 minutes

[0045] Table 1

[0046] As can be seen from Table 1, the device 1 of the embodiment of the present application can cover the whole transformer area when installed at the transformer station, and the upgrade time is compressed to within 10 minutes, greatly improving the production efficiency.

[0047] The device 1 of the present application based on the point-to-multipoint broadcast data of the high-power HPLC communication can process the input data, such as the upgrade package, to obtain the HPLC signal, and then send the signal to the three-phase power line of the power grid through power amplification and coupling, thereby enabling the batch upgrade of multiple STA modules through the power grid communication, greatly compressing the upgrade time and improving the production efficiency, and the coverage range of the communication upgrade is larger.

[0048] The above is only the preferred embodiment of the present application, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the protection scope of the present application.

Claims

1. A device for point-to-multipoint broadcast data based on high-power HPLC communication, characterized in that, Includes the main control unit, power amplifier circuit, and coupling circuit; The first end of the main control unit is used to receive input data, the second end of the main control unit is connected to the first end of the power amplifier circuit, the first end of the coupling circuit is connected to the second end of the power amplifier circuit, and the second end of the coupling circuit is connected to the three-phase power line terminal, wherein the three-phase power line terminal is connected to the mains power through a cable; The main control unit is configured to process the input data to generate two HPLC signals and transmit the HPLC signals to the power amplifier circuit; the power amplifier circuit is configured to generate two amplified signals based on the two HPLC signals and transmit the two amplified signals to the coupling circuit; the coupling circuit is configured to generate a carrier coupling signal based on the two amplified signals and transmit the carrier coupling signal to the three-phase power line terminal, wherein the carrier coupling signal is used to upgrade the STA module connected to the mains power.

2. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 1, characterized in that, The main control unit includes a carrier main control chip, which downloads and processes the input data via a UART serial port, and generates two HPLC signals which are output via the carrier transmission port.

3. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 2, characterized in that, The main control unit includes a voltage regulator circuit and a TCXO crystal oscillator; one end of the voltage regulator circuit is connected to a DC power supply, and the other end of the voltage regulator circuit is connected to the VDD terminal of the carrier main control chip for supplying power to the carrier main control chip; one end of the TCXO crystal oscillator is connected to the power supply voltage, and the other end of the TCXO crystal oscillator is connected to the OSC_IN terminal of the carrier main control chip for stabilizing the output frequency of the two HPLC signals.

4. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 2, characterized in that, The power amplifier circuit includes a first carrier circuit, a second carrier circuit, and a carrier power combiner. The first carrier circuit and the second carrier circuit each receive one of the HPLC signals and generate one power amplifier signal. The first carrier circuit and the second carrier circuit each input one of the power amplifier signals to the carrier power combiner. The carrier power combiner generates two amplified signals based on the two power amplifier signals and outputs them.

5. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 4, characterized in that, The power amplifier circuit includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor; the first terminal of the first capacitor and the first terminal of the third capacitor are both connected to the TX_N terminal of the carrier transmission port, wherein the second terminal of the first capacitor is connected to the first carrier circuit, and the second terminal of the third capacitor is connected to the second carrier circuit; the first terminal of the second capacitor and the first terminal of the fourth capacitor are both connected to the TX_P terminal of the carrier transmission port, wherein the second terminal of the second capacitor is connected to the first carrier circuit, and the second terminal of the fourth capacitor is connected to the second carrier circuit.

6. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 4, characterized in that, The coupling circuit includes a carrier coupler, a fifth capacitor, a sixth capacitor, and a seventh capacitor for coupling the amplified signal; the first and second ends of the carrier coupler are both connected to the carrier power combiner for receiving the two amplified signals; the third end of the carrier coupler is connected to one end of the fifth capacitor, one end of the sixth capacitor, and one end of the seventh capacitor, wherein the other end of the fifth capacitor is connected to the A end of the three-phase power line terminal, the other end of the sixth capacitor is connected to the B end of the three-phase power line terminal, and the other end of the seventh capacitor is connected to the C end of the three-phase power line terminal; the fourth end of the carrier coupler is connected to the N end of the three-phase power line terminal.

7. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 2, characterized in that, The carrier control chip is a SOC-type chip that integrates an MCU module and an HPLC module. The MCU module uses a RISC-V core processor and has a main frequency of 200MHz.

8. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 1, characterized in that, The carrier coupling signal carries a beacon timestamp for transmitting the network reference time, and the STA module performs local clock synchronization based on the beacon timestamp.

9. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 3, characterized in that, The TCXO crystal oscillator is 25MHz.

10. The device for point-to-multipoint broadcast data based on high-power HPLC communication according to claim 2, characterized in that, The carrier master control chip is connected to the DP9 serial port of the host computer and receives the upgrade firmware of the STA module.

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