A power line carrier transmission method and device based on double-core fusion

Abstract

The application discloses a kind of power line carrier transmission device and method based on double-core fusion, device includes power management unit, main carrier unit, carrier fusion unit and at least one slave carrier unit, power management unit is powered for main carrier unit and slave carrier unit, main carrier unit is filtered to received carrier signal, or when receiving the data task sent by external terminal, execute data task generation first direct current carrier signal, or data task is sent to slave carrier unit, slave carrier unit is communicated with carrier fusion unit, received carrier signal is filtered, or second direct current carrier signal is generated in response to data task;Carrier fusion unit carries out signal fusion to first direct current carrier signal and second direct current carrier signal, and is transmitted to target terminal by power line.Thereby it can simultaneously respond to the adjustment of different carrier frequency bands of multiple different services, effectively improve data transmission efficiency and flexibility.

Description

Technical Field

[0001] This invention relates to the field of power line carrier transmission technology, and in particular to a power line carrier transmission method and apparatus based on dual-core fusion. Background Technology

[0002] Currently, power line carrier technology is experiencing a new round of rapid development both domestically and internationally. Advances in digital communication and signal processing technologies are bringing new development ideas to power line communication technology. In China, with the promotion of smart grids, distribution network automation technology and distribution network automation communication systems are developing rapidly. Power line carrier communication technology provides a highly reliable and low-cost communication method for distribution network automation communication systems. However, due to the diversity and complexity of distribution network automation sites, power line communication technology faces significant challenges in its widespread adoption.

[0003] Power line carrier technology involves loading a high-frequency signal carrying information onto an electric current at the transmitting end, transmitting the information via a power line, then using an adapter to separate the high-frequency signal from the current and transmitting it through the power line to a computer or telephone to transmit information. At the receiving end, the waveform on the line is demodulated to extract and recover the information.

[0004] The carrier modules currently in use only support single-channel, single-band operation. This single-core communication solution typically only supports one broadband carrier channel with narrow bandwidth. In this mode, if business communication is frequent, the data transmission efficiency is reduced, and it is impossible to adjust the carrier frequency band based on different types of services, resulting in poor flexibility. Summary of the Invention

[0005] This invention provides a power line carrier transmission method and apparatus based on dual-core fusion, which solves the technical problems of single-core communication schemes, which typically only support one broadband carrier channel with narrow bandwidth. In this mode, if there is frequent business communication, the data transmission efficiency is reduced, and the carrier frequency band cannot be adjusted according to different types of services, resulting in poor flexibility.

[0006] The present invention provides a power line carrier transmission device based on dual-core fusion, comprising a power management unit, a main carrier unit, a carrier fusion unit, and at least one slave carrier unit;

[0007] The power management unit is connected to the main carrier unit, the slave carrier unit and the external terminal respectively, and is used to supply power to the main carrier unit and the slave carrier unit;

[0008] The main carrier unit is communicatively connected to the external terminal, the carrier fusion unit, and the slave carrier unit, respectively, and is used to filter the received carrier signal, or when a data task is received from the external terminal, execute the data task to generate a first DC carrier signal, or send the data task to the slave carrier unit.

[0009] The carrier unit is communicatively connected to the carrier fusion unit and is used to filter the received carrier signal or generate a second DC carrier signal in response to the data task.

[0010] The carrier fusion unit is used to fuse the first DC carrier signal and the second DC carrier signal, and transmit them to the target terminal via a power line.

[0011] Optionally, the power management unit includes a main power module, a backup power module, a supercapacitor, and a power management module;

[0012] The main power module is connected to the external terminal, the backup power module, and the power management module respectively. When the external terminal is in operation, it steps down the input voltage of the external terminal to generate the chip operating voltage and sends it to the power management module and the backup power module.

[0013] The backup power module is connected to the supercapacitor and is used to charge the supercapacitor when it receives the voltage used by the chip, and to boost the voltage output by the supercapacitor when the voltage used by the chip is interrupted, so as to generate the voltage used by the main module and transmit it to the main power module.

[0014] The power management module is connected to the external terminal, the main power module, the main carrier unit, and the slave carrier unit, respectively, and is used to acquire the input voltage and the chip operating voltage in real time, and to supply power to the main carrier unit and the slave carrier unit.

[0015] Optionally, the power management module is further configured to collect the low-voltage current of the main carrier unit and the low-voltage current of the slave carrier unit in real time, determine the first load condition of the main carrier unit and the second load condition of the slave carrier unit respectively, and upload them to the external terminal;

[0016] The external terminal is also used to adjust the data tasks corresponding to the primary carrier unit and / or the secondary carrier unit in response to the first load condition and the second load condition.

[0017] Optionally, the main carrier unit includes a terminal interaction module, a zero-crossing detection module, a first storage module, a first communication module, a first carrier driving module, and a first carrier receiving module;

[0018] The terminal interaction module is used to receive data tasks and various functional interaction information sent by the external terminal through serial communication;

[0019] The zero-crossing detection module is used to identify the moment when the AC voltage of the power line is zero and generate a pulse signal to the first carrier drive module.

[0020] The first storage module is used to store the setting parameters of the main carrier unit and the data task;

[0021] The first communication module is configured to send the data task to the slave carrier unit when the task type of the data task matches the task type corresponding to the slave carrier unit, or when the task volume of the first carrier driving module is greater than the unit execution threshold.

[0022] The first carrier drive module is used to extract the signal to be transmitted in the data task and amplify it proportionally to generate a first DC carrier signal and transmit it to the carrier fusion unit;

[0023] The first carrier receiving module is used to filter the carrier signal according to a preset specific frequency band when it receives the carrier signal, generate a first filtered signal and transmit it to the external terminal.

[0024] Optionally, the slave carrier unit includes a second storage module, a second communication module, a second carrier driving module, and a second carrier receiving module;

[0025] The second communication module is used to receive the data task;

[0026] The second storage module is used to store the setting parameters of the slave carrier unit and the data task;

[0027] The second carrier drive module is used to extract the signal to be transmitted in the data task and amplify it proportionally to generate a second DC carrier signal and transmit it to the main carrier unit;

[0028] The second carrier receiving module is used to filter the carrier signal according to a preset specific frequency band when it receives the carrier signal, generate a second filtered signal and transmit it to the main carrier unit.

[0029] Optionally, the main carrier unit and / or the slave carrier unit further includes an indicator light module;

[0030] The indicator module is used to display the current working status and transmission / reception status of the master carrier unit and / or the slave carrier unit.

[0031] Optionally, the carrier fusion unit includes a carrier signal fusion subunit and a carrier signal coupling subunit connected in sequence;

[0032] The carrier signal fusion subunit is used to convert the first DC carrier signal and the second DC carrier signal into AC signals and fuse them to generate a fused carrier signal.

[0033] The carrier signal coupling subunit is used to filter the AC voltage in the power line and use a coupling coil to couple the fused carrier signal to the power line for transmission to the target terminal.

[0034] Optionally, the carrier signal fusion subunit includes a DC blocking module, a clamping protection module, and an anti-collision module;

[0035] The DC blocking module is used to convert the first DC carrier signal into a first AC carrier signal, convert the second DC carrier signal into a second AC carrier signal, and fuse the first AC carrier signal and the second AC carrier signal to generate a fused carrier signal.

[0036] The clamping protection module is used to detect the waveform parameters in the fused carrier signal in real time, and adjust the waveform of the first DC carrier signal and / or the second DC carrier signal according to the waveform parameters.

[0037] The anti-collision module is used to monitor the channel quality of the fused carrier signal in real time and adjust the channel parameters of the master carrier unit and / or the slave carrier unit according to the monitoring results.

[0038] Optionally, a switching switch is provided between the main carrier unit and the slave carrier unit and the carrier signal fusion subunit, respectively, for adjusting the switching switch to the lowest task priority according to the task priority of the main carrier unit and the task priority of the slave carrier unit when a communication conflict occurs between the first DC carrier signal and the second DC carrier signal;

[0039] A sampling module is provided between the DC blocking module and the clamping protection module for sampling the signal amplitude and the signal phase of the fused carrier signal.

[0040] When the signal amplitude or the signal phase does not meet the preset conditions, the modulation parameters in the main carrier unit and the slave carrier unit are adjusted until the signal amplitude and the signal phase both meet the preset conditions.

[0041] The present invention also provides a power line carrier transmission method based on dual-core fusion, applied to the power line carrier transmission device based on dual-core fusion described in any of the above claims, the method comprising:

[0042] When the master carrier unit receives a data task sent by an external terminal, it executes the data task to generate a first DC carrier signal, or sends the data task to the slave carrier unit.

[0043] When a data task sent by the main carrier unit is received from the carrier unit, the data task is executed to generate a second DC carrier signal;

[0044] The first DC carrier signal and the second DC carrier signal are fused together and transmitted to the target terminal via a power line.

[0045] When the primary carrier unit or the secondary carrier unit receives a carrier signal, the carrier signal is filtered and returned to the external terminal through the primary carrier unit.

[0046] As can be seen from the above technical solutions, the present invention has the following advantages:

[0047] This invention provides a power line carrier transmission device based on dual-core fusion, comprising a power management unit, a main carrier unit, a carrier fusion unit, and at least one slave carrier unit. The power management unit is connected to the main carrier unit, the slave carrier unit, and an external terminal, and is used to supply power to the main carrier unit and the slave carrier unit. The main carrier unit is communicatively connected to the external terminal, the carrier fusion unit, and the slave carrier unit, and is used to filter received carrier signals, or, when receiving a data task sent by the external terminal, execute the data task to generate a first DC carrier signal, or send the data task to the slave carrier unit. The slave carrier unit is communicatively connected to the carrier fusion unit and is used to filter received carrier signals, or generate a second DC carrier signal in response to a data task. The carrier fusion unit is used to fuse the first DC carrier signal and the second DC carrier signal, and transmit them to the target terminal via the power line. This allows for simultaneous response to multiple different services by adjusting different carrier frequency bands, effectively improving data transmission efficiency and flexibility. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A structural block diagram of a power line carrier transmission device based on dual-core fusion provided in an embodiment of the present invention;

[0050] Figure 2A structural block diagram of a power line carrier transmission device based on dual-core fusion is provided for another embodiment of the present invention;

[0051] Figure 3 This is a structural block diagram of a power management unit according to an embodiment of the present invention;

[0052] Figure 4 This is a structural block diagram of the carrier signal fusion subunit in an embodiment of the present invention;

[0053] Figure 5 This is a circuit logic diagram of the switching switch within the carrier signal fusion subunit in an embodiment of the present invention;

[0054] Figure 6 This is a structural block diagram of a power line carrier transmission device based on dual-core fusion, provided for an embodiment of the present invention. Detailed Implementation

[0055] This invention provides a power line carrier transmission method and apparatus based on dual-core fusion, which addresses the technical problem that single-core communication schemes typically only support one broadband carrier channel with narrow bandwidth. In this mode, if there is frequent business communication, the data transmission efficiency is reduced, and the carrier frequency band cannot be adjusted according to different types of services, resulting in poor flexibility.

[0056] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0057] Please see Figure 1 , Figure 1 This is a structural block diagram of a power line carrier transmission device based on dual-core fusion, provided for an embodiment of the present invention.

[0058] The present invention provides a power line carrier transmission device based on dual-core fusion, comprising a power management unit 101, a main carrier unit 102, a carrier fusion unit 104, and at least one slave carrier unit 103;

[0059] The power management unit 101 is connected to the main carrier unit 102, the slave carrier unit 103 and the external terminal 100 respectively, and is used to supply power to the main carrier unit 102 and the slave carrier unit 103.

[0060] The main carrier unit 102 is communicatively connected to the external terminal 100, the carrier fusion unit 104 and the slave carrier unit 103 respectively, and is used to filter the received carrier signal, or when it receives a data task sent by the external terminal 100, execute the data task to generate a first DC carrier signal, or send the data task to the slave carrier unit 103.

[0061] The carrier unit 103 is communicatively connected to the carrier fusion unit 104, and is used to filter the received carrier signal or generate a second DC carrier signal in response to a data task.

[0062] The carrier fusion unit 104 is used to fuse the first DC carrier signal and the second DC carrier signal and transmit them to the target terminal via the power line.

[0063] In this embodiment of the invention, the power management unit 101 is connected to the main carrier unit 102 and the slave carrier unit 103 respectively. At the same time, after both the power management unit 101 and the main carrier unit 102 are connected to the external terminal 100, the main carrier unit 102 receives the data task or signal to be sent by the external terminal 100, and the power management unit 101 provides power to the main carrier unit 102 and the slave carrier unit 103.

[0064] The master carrier unit 102 is communicatively connected to both the carrier fusion unit 104 and the slave carrier unit 103. After establishing a communication connection with the external terminal 100, it can filter the carrier signals it receives and return them to the external terminal 100. When it receives a data task sent by the external terminal 100, it executes the data task to generate a first DC carrier signal and sends it to the carrier fusion unit 104, or sends the data task to the slave carrier unit 103, based on factors such as the task type or its own data processing load. This enables the slave carrier unit 103 to communicate indirectly with the external terminal 100 and undertake the data task.

[0065] The carrier unit 103 is communicatively connected to the carrier fusion unit 104. After receiving the data task sent by the main carrier unit 102, the carrier unit 103 can respond to the data task by performing signal modulation in different frequency bands to generate a second DC carrier signal. If it receives a carrier signal returned from the outside, it can also filter the carrier signal and return it to the main carrier unit 102 through inter-unit communication. The filtered signal is returned to the external terminal 100 through serial communication between the main carrier unit 102 and the external terminal 100.

[0066] Since the main carrier unit 102 and the slave carrier unit 103 mainly amplify the signals in the data task sent by the external terminal 100, when the carrier fusion unit 104 receives the first DC carrier signal and the second DC carrier signal, it converts them from DC form to AC signal, so that the fused signal can be transmitted through the power line under the same coupling circuit, thereby ensuring that the dual-channel carrier signals are mutually complementary and do not interfere with each other.

[0067] It should be noted that the master carrier unit 102 and slave carrier unit 103 in the embodiments of the present invention can be set with different carrier modulation frequency bands according to actual needs. The specific modulation frequency bands can be the same or different, and the embodiments of the present invention do not limit this.

[0068] Please see Figure 2 , Figure 2 This is a structural block diagram of a power line carrier transmission device based on dual-core fusion, provided for another embodiment of the present invention.

[0069] In this embodiment, the power management unit 101 includes a main power module, a backup power module, a supercapacitor 1013, and a power management module 1014.

[0070] The main power module is connected to the external terminal 100, the backup power module, and the power management module 1014 respectively. When the external terminal 100 is in operation, it steps down the input voltage of the external terminal 100 to generate the chip's operating voltage and sends it to the power management module 1014 and the backup power module.

[0071] The backup power module is connected to the supercapacitor 1013. When the chip's operating voltage is received, it charges the supercapacitor 1013 and boosts the voltage output by the supercapacitor 1013 when the chip's operating voltage is interrupted, generating the main module's operating voltage and transmitting it to the main power module.

[0072] The power management module 1014 is connected to the external terminal 100, the main power module, the main carrier unit 102 and the slave carrier unit 103 respectively, and is used to obtain the input voltage and the chip operating voltage in real time, and to supply power to the main carrier unit 102 and the slave carrier unit 103.

[0073] In this embodiment of the invention, the power management unit 101 includes a main power module, a backup power module, a supercapacitor 1013, and a power management module 1014. The main power module supplies power to the main carrier unit 102 and the slave carrier unit 103 when the external terminal 100 is powered. The power management module 1014 distributes and controls the power-on current and idle power consumption of the main and slave modules, reducing device power consumption while achieving dual-channel carrier communication. The backup power module supplies power to the main carrier unit 102 when the terminal is not powered.

[0074] Please see Figure 3 , Figure 3 This is a structural block diagram of a power management unit 101 in an embodiment of the present invention.

[0075] In this embodiment, after the external terminal 100 establishes a connection with the main power module, and when the external terminal 100 is in normal operating condition (i.e., in operation), it provides 12V power to the main power chip within the main power module. The main power chip then steps down the voltage to generate 3.3V, which is supplied to the backup power chip in the backup power module and the power management chip in the power management module 1014. When the terminal is in normal operating condition, the backup power chip outputs 2.5V to the supercapacitor 1013 for charging management. When the terminal loses power, the power management chip, based on the acquired 12V voltage threshold, controls the backup power chip to boost the voltage to 12V to power the main power chip, but does not supply power to the terminal, thus extending the normal operating time of the dual-core fusion-based power line carrier transmission device after a power outage as much as possible.

[0076] Optionally, the power management module 1014 is also used to collect the low-voltage current of the main carrier unit 102 and the low-voltage current of the slave carrier unit 103 in real time, determine the first load condition of the main carrier unit 102 and the second load condition of the slave carrier unit 103 respectively, and upload them to the external terminal 100.

[0077] The external terminal 100 is also used to adjust the data tasks corresponding to the primary carrier unit 102 and / or the secondary carrier unit 103 respectively in response to the first load condition and the second load condition.

[0078] Meanwhile, in this embodiment, the power management chip can also collect the 12V voltage and current provided by the external terminal 100 and the 3.3V voltage and current provided by the main chip power supply in real time to perform fine-grained power management on the master and slave carrier units 103, as follows:

[0079] The power management chip uses the collected 12V dynamic current to finely manage the power-on and power-off timing of the master and slave carrier units 103. This effectively controls the overshoot current during power-on of the master and slave carrier units 103, ensuring that the terminal will not restart abnormally due to insufficient output current.

[0080] The power management chip can also collect the current of the master and slave carrier units 103 at 3.3V to determine the communication load of the master and slave carrier units 103 in real time. By allocating tasks with the external terminal 100, the chip can adjust the data tasks sent to the master and slave carrier units 103 in real time to reduce the overall power consumption of the device.

[0081] Optionally, the main carrier unit 102 includes a terminal interaction module 1021, a zero-crossing detection module 1022, a first storage module 1023, a first communication module 1024, a first carrier driving module 1025, and a first carrier receiving module 1026.

[0082] The terminal interaction module 1021 is used to receive data tasks and various functional interaction information sent by the external terminal 100 via serial communication.

[0083] The zero-crossing detection module 1022 is used to identify the moment when the AC voltage of the power line is zero and generate a pulse signal to the first carrier drive module 1025.

[0084] The first storage module 1023 is used to store the setting parameters and data tasks of the main carrier unit 102;

[0085] The first communication module 1024 is used to send the data task to the slave carrier unit 103 when the task type of the data task matches the task type corresponding to the slave carrier unit 103, or when the task quantity of the first carrier drive module 1025 is greater than the unit execution threshold.

[0086] The first carrier drive module 1025 is used to extract the signal to be transmitted in the data task and amplify it proportionally to generate a first DC carrier signal and transmit it to the carrier fusion unit 104.

[0087] The first carrier receiving module 1026 is used to filter the carrier signal according to a preset specific frequency band when a carrier signal is received, generate a first filtered signal and transmit it to the external terminal 100.

[0088] Please see Figure 2 The main carrier unit 102 includes a terminal interaction module 1021, a zero-crossing detection module 1022, a first storage module 1023, a first communication module 1024, a first carrier driving module 1025, and a first carrier receiving module 1026.

[0089] In this embodiment, the terminal interaction module 1021 performs data interaction, reset, insertion detection, and status feedback with the terminal through the UART and GPIO ports. Simultaneously, it receives data tasks and various functional interaction information sent by the external terminal 100 via the aforementioned serial communication. Meanwhile, the zero-crossing detection module 1022 can identify the zero-crossing moment of the AC voltage on the power line and generate a pulse signal for the main carrier unit 102 to detect it. The first storage module 1023 records the setting parameters of the main carrier unit 102, data tasks, terminal-reported data, and returned first filter signals, serving as a buffer component for the main carrier unit 102.

[0090] Meanwhile, when the master carrier unit 102 receives a data task, it needs to determine whether it conforms to its own carrier frequency or whether the task type conforms to its own task type or whether the task quantity is greater than the unit execution threshold. If any condition is not met, it can send the task to the slave carrier unit 103 through the first communication module 1024 to balance the power consumption between units while ensuring timely information transmission.

[0091] If the data task is determined to match the task type of the main carrier unit 102, the signal to be transmitted can be extracted by the first carrier drive module 1025, amplified proportionally, and a first DC carrier signal can be generated and transmitted to the carrier fusion unit 104 for signal fusion. At the same time, the first carrier receiving module 1026 monitors in real time whether a carrier signal is received. If an externally input carrier signal is received, the filtered signal can be filtered according to a specific frequency band preset by the main carrier unit 102 to generate a first filtered signal and return it to the external terminal 100.

[0092] It should be noted that the first carrier receiving module 1026 can be designed with an LC bandpass filter to allow carrier signals of a specific frequency band to pass through, while suppressing signals and noise outside the frequency band, thereby improving noise filtering and information extraction of carrier signals emitted by other carrier units and enhancing communication sensitivity.

[0093] In one example of the present invention, the carrier unit 103 includes a second storage module 1032, a second communication module 1031, a second carrier driving module 1033, and a second carrier receiving module 1034;

[0094] The second communication module 1031 is used to receive data tasks;

[0095] The second storage module 1032 is used to store the setting parameters and data tasks from the carrier unit 103;

[0096] The second carrier drive module 1033 is used to extract the signal to be transmitted in the data task and amplify it proportionally to generate a second DC carrier signal and transmit it to the main carrier unit 102.

[0097] The second carrier receiving module 1034 is used to filter the carrier signal according to a preset specific frequency band when the carrier signal is received, generate a second filtered signal and transmit it to the main carrier unit 102.

[0098] In this embodiment of the invention, the second communication module 1031 is the interface for data interaction between the slave carrier unit 103 and the main carrier unit 102. After receiving a data task, the second communication module 1031 in the slave carrier unit 103 caches and stores the setting parameters of the slave carrier unit 103 and the data reported by the terminal through the second storage module 1032. The second carrier drive module 1033 extracts the signal to be transmitted from the data task, amplifies it proportionally, generates a second DC carrier signal, and transmits it to the main carrier unit 102.

[0099] Meanwhile, the second carrier receiving module 1034 is used to filter the carrier signal according to a preset specific frequency band when it receives the carrier signal, generate a second filtered signal and transmit it to the main carrier unit 102, which then transmits it to the external terminal 100.

[0100] The second carrier receiving module 1034 is designed with an LC bandpass filter to allow carrier signals of a specific frequency band to pass through, while suppressing signals and noise outside the frequency band. This improves noise filtering and information extraction of carrier signals emitted by other carrier units, thereby enhancing communication sensitivity.

[0101] In addition, to adapt to the generation of DC carrier signals in different frequency bands, multiple carrier units 103 may be included, which are respectively connected to the main carrier unit 102 for communication and indirectly communicate with the external terminal 100 through the main carrier unit 102.

[0102] Furthermore, the main carrier unit 102 and / or the slave carrier unit 103 also include an indicator light module;

[0103] The indicator module is used to display the current operating status and transmission / reception status of the main carrier unit 102 and / or the slave carrier unit 103.

[0104] In this embodiment, both the master carrier unit 102 and the slave carrier unit 103 can be equipped with indicator light modules. By associating their signal transmission and reception with the indicator light modules, the working status and transmission and reception status of the master carrier unit 102 and the slave carrier unit 103 at the current moment can be displayed in real time.

[0105] For example, in a specific implementation, the indicator light can be yellow to indicate that the unit is in normal working condition. During normal transmission and reception, the indicator light can be displayed in the form of a breathing light, and different breathing amplitudes can indicate the busy level of transmission and reception. If it is in an abnormal working state, it can be turned off or displayed as a red light. When there is a problem with transmission and reception, it can be displayed by flashing a red light. The specific display method of the indicator light is not limited in the embodiments of the present invention, as long as it can accurately display the working status and transmission and reception status of the unit.

[0106] Optionally, the carrier fusion unit 104 includes a carrier signal fusion subunit 1041 and a carrier signal coupling subunit 1042 connected in sequence;

[0107] The carrier signal fusion subunit 1041 is used to convert the first DC carrier signal and the second DC carrier signal into AC signals and fuse them to generate a fused carrier signal.

[0108] The carrier signal coupling subunit 1042 is used to filter the AC voltage in the power line and use a coupling coil to couple the fused carrier signal to the power line for transmission to the target terminal.

[0109] In this embodiment of the invention, the carrier fusion unit 104 includes a carrier signal fusion subunit 1041 and a carrier signal coupling subunit 1042. The carrier signal fusion subunit 1041 converts the first DC carrier signal and the second DC carrier signal into AC signals respectively and fuses them to generate a fused carrier signal. Simultaneously, the fused carrier signal is monitored in real time to adjust the main carrier unit 102 and the slave carrier unit 103, ensuring that the dual-channel carrier signals do not interfere with each other. Meanwhile, the carrier signal coupling subunit 1042 filters the AC voltage within the power line and uses a coupling coil to couple the fused carrier signal to the power line, transmitting the fused carrier signal to the target terminal via the power line.

[0110] In one example of the present invention, the carrier signal coupling subunit 1042 may include an isolation module 10421 and a coupling module 10422. The isolation module 10421 isolates and filters the high-voltage, low-frequency AC voltage of the power line, allowing the high-frequency carrier signal to pass through, reducing low-frequency noise in the line, and ensuring data transmission. The coupling module 10422 uses coupling coils to perform primary and secondary separation of the high-voltage and low-voltage systems, which improves the carrier's load capacity and reduces high-frequency noise in the line, thus improving communication performance.

[0111] Furthermore, the carrier signal fusion subunit 1041 includes a DC blocking module 10411, a clamping protection module 10412, and an anti-collision module 10413;

[0112] The DC blocking module 10411 is used to convert a first DC carrier signal into a first AC carrier signal, convert a second DC carrier signal into a second AC carrier signal, and fuse the first AC carrier signal and the second AC carrier signal to generate a fused carrier signal.

[0113] The clamping protection module 10412 is used to detect the waveform parameters in the fused carrier signal in real time and adjust the waveform of the first DC carrier signal and / or the second DC carrier signal according to the waveform parameters.

[0114] The anti-collision module 10413 is used to monitor the channel quality of the fused carrier signal in real time and adjust the channel parameters of the master carrier unit 102 and / or slave carrier unit 103 according to the monitoring results.

[0115] In this embodiment of the invention, the carrier signal fusion subunit 1041 includes a DC blocking module 10411, a clamping protection module 10412, and an anti-collision module 10413. The isolation module 10421 converts the first DC carrier signal obtained after the main carrier unit 102 and the slave carrier unit 103 have been amplified by the carrier driving module into a first AC carrier signal, converts the second DC carrier signal into a second AC carrier signal, and fuses the first AC carrier signal and the second AC carrier signal to generate a fused carrier signal. This ensures that the corresponding carrier signals of the main and slave carrier units 103 are transmitted under the same coupling circuit, and that the dual-channel carrier signals do not interfere with each other.

[0116] Meanwhile, the clamping protection module 10412 can monitor the waveform parameters of the fused carrier signal in real time, such as amplitude and phase. If the signal is too large, it can adjust the amplitude and phase of the corresponding master and slave carrier unit 103 signals in real time to avoid damage to the device or waveform distortion caused by excessive voltage.

[0117] It should be noted that the anti-collision module 10413 can monitor the channel quality of the corresponding carriers of the master and slave carrier units 103, and adjust the channel capacity and channel bandwidth of the corresponding carriers according to the monitoring results to prevent the dual-channel carrier signals from interfering with each other.

[0118] Furthermore, a switching switch is provided between the main carrier unit 102 and the slave carrier unit 103 and the carrier signal fusion subunit 1041, respectively, to adjust the switching switch to the lowest task priority according to the task priority of the main carrier unit 102 and the task priority of the slave carrier unit 103 when a communication conflict occurs between the first DC carrier signal and the second DC carrier signal.

[0119] A sampling module 10414 is provided between the DC blocking module 10411 and the clamping protection module 10412 for sampling the signal amplitude and signal phase of the fused carrier signal.

[0120] When the signal amplitude or signal phase does not meet the preset conditions, the modulation parameters in the main carrier unit 102 and the slave carrier unit 103 are adjusted until the signal amplitude and signal phase both meet the preset conditions.

[0121] Please see Figure 4 and Figure 5 , Figure 4 This is a structural block diagram of the carrier signal fusion subunit 1041 in an embodiment of the present invention. Figure 5This is a circuit logic diagram of the switching switch within the carrier signal fusion subunit 1041 in an embodiment of the present invention.

[0122] In this embodiment, the first DC carrier signal and the second DC carrier signal emitted by the master and slave carrier units 103 are transmitted via a channel switching switch controlled by their respective carrier units. In the fusion circuit, the carrier signals emitted by the master and slave carrier units 103 are converted from DC to AC signals to filter out the DC component in the carrier signal, avoiding the superposition of DC components during the fusion of the master and slave carrier signals, which could lead to excessive voltage and damage to the drive circuit. After the master and slave carrier signals are fused, a voltage sampling circuit is designed to monitor the amplitude and phase of the fused carrier signal in real time. Based on the monitoring results, the carrier signals of the master and slave carrier units 103 are dynamically adjusted to achieve the optimal communication effect after fusion. For situations where the adjustment may not be timely, a voltage clamping protection circuit is designed to ensure the reliability and stability of the carrier drive circuit. To address the potential signal conflict issues in dual-carrier communication, a dual-channel switching circuit is added to the circuit. When a communication conflict is detected between the carrier signals of the two channels, the master and slave carrier units 103 will coordinate according to the current task priority. The corresponding carrier units will control their respective switching switches to physically coordinate their respective carrier communication, thereby achieving anti-conflict protection in dual-carrier communication.

[0123] In this embodiment of the invention, a power line carrier transmission device based on dual-core fusion is provided, including a power management unit, a main carrier unit, a carrier fusion unit, and at least one slave carrier unit. The power management unit is connected to the main carrier unit, the slave carrier unit, and an external terminal, respectively, and is used to supply power to the main carrier unit and the slave carrier unit. The main carrier unit is communicatively connected to the external terminal, the carrier fusion unit, and the slave carrier unit, respectively, and is used to filter the received carrier signals, or when receiving a data task sent by the external terminal, execute the data task to generate a first DC carrier signal, or send the data task to the slave carrier unit. The slave carrier unit is communicatively connected to the carrier fusion unit and is used to filter the received carrier signals, or generate a second DC carrier signal in response to the data task. The carrier fusion unit is used to fuse the first DC carrier signal and the second DC carrier signal, and transmit them to the target terminal via the power line. This enables simultaneous response to multiple different services by adjusting different carrier frequency bands, effectively improving data transmission efficiency and flexibility. By providing a dual-core solution with more subcarriers and higher bandwidth scalability, it can flexibly select suitable subcarriers for transmission to achieve dynamic frequency domain resource allocation, thereby fully utilizing frequency diversity and multi-user diversity to obtain the best system performance.

[0124] Please see Figure 6 , Figure 6 This diagram illustrates a step-by-step flowchart of a power line carrier transmission method based on dual-core fusion according to an embodiment of the present invention.

[0125] This invention provides a power line carrier transmission method based on dual-core fusion, applicable to any embodiment of the power line carrier transmission device based on dual-core fusion. The method includes:

[0126] Step 601: When the main carrier unit receives a data task sent by an external terminal, it executes the data task to generate a first DC carrier signal, or sends the data task to the slave carrier unit.

[0127] Step 602: When a data task sent by the main carrier unit is received from the carrier unit, the data task is executed to generate a second DC carrier signal;

[0128] Step 603: The first DC carrier signal and the second DC carrier signal are fused together and transmitted to the target terminal via the power line;

[0129] Step 604: When the main carrier unit or the carrier unit receives a carrier signal, the carrier signal is filtered and returned to the external terminal through the main carrier unit.

[0130] In this embodiment of the invention, when the main carrier unit receives a data task sent by an external terminal, it executes the data task to generate a first DC carrier signal or sends the data task to the slave carrier unit; when the slave carrier unit receives a data task sent by the main carrier unit, it executes the data task to generate a second DC carrier signal; the first DC carrier signal and the second DC carrier signal are fused and transmitted to the target terminal via a power line; when the main carrier unit or the slave carrier unit receives a carrier signal, the carrier signal is filtered and returned to the external terminal via the main carrier unit, thereby enabling simultaneous response to multiple different services and adjustment of different carrier frequency bands, effectively improving data transmission efficiency and data transmission flexibility.

[0131] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the method described above can be referred to the corresponding process in the foregoing device embodiments, and will not be repeated here.

[0132] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0133] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0134] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 invention.

Claims

1. A power line carrier transmission device based on dual-core fusion, characterized in that, It includes a power management unit, a main carrier unit, a carrier fusion unit, and at least one slave carrier unit; The power management unit is connected to the main carrier unit, the slave carrier unit and the external terminal respectively, and is used to supply power to the main carrier unit and the slave carrier unit; The main carrier unit is communicatively connected to the external terminal, the carrier fusion unit, and the slave carrier unit, respectively, and is used to filter the received carrier signal, or when a data task is received from the external terminal, execute the data task to generate a first DC carrier signal, or send the data task to the slave carrier unit. The carrier unit is communicatively connected to the carrier fusion unit and is used to filter the received carrier signal or generate a second DC carrier signal in response to the data task. The carrier fusion unit is used to fuse the first DC carrier signal and the second DC carrier signal, and transmit them to the target terminal via the power line. The carrier fusion unit includes a carrier signal fusion subunit and a carrier signal coupling subunit connected in sequence; the carrier signal fusion subunit includes a DC blocking module, a clamping protection module, and an anti-collision module. The carrier signal fusion subunit is used to convert the first DC carrier signal and the second DC carrier signal into AC signals and fuse them to generate a fused carrier signal. The carrier signal coupling subunit is used to filter the AC voltage in the power line and use a coupling coil to couple the fused carrier signal to the power line for transmission to the target terminal. The main carrier unit and the slave carrier unit are respectively provided with a switching switch between the carrier signal fusion subunit. When a communication conflict occurs between the first DC carrier signal and the second DC carrier signal, the switching switch with the lowest task priority is adjusted according to the task priority of the main carrier unit and the task priority of the slave carrier unit. A sampling module is provided between the DC blocking module and the clamping protection module for sampling the signal amplitude and signal phase of the fused carrier signal; When the signal amplitude or the signal phase does not meet the preset conditions, the modulation parameters in the main carrier unit and the slave carrier unit are adjusted until the signal amplitude and the signal phase both meet the preset conditions.

2. The apparatus according to claim 1, characterized in that, The power management unit includes a main power module, a backup power module, a supercapacitor, and a power management module. The main power module is connected to the external terminal, the backup power module, and the power management module respectively. When the external terminal is in operation, it steps down the input voltage of the external terminal to generate the chip operating voltage and sends it to the power management module and the backup power module. The backup power module is connected to the supercapacitor and is used to charge the supercapacitor when it receives the voltage used by the chip, and to boost the voltage output by the supercapacitor when the voltage used by the chip is interrupted, so as to generate the voltage used by the main module and transmit it to the main power module. The power management module is connected to the external terminal, the main power module, the main carrier unit, and the slave carrier unit, respectively, and is used to acquire the input voltage and the chip operating voltage in real time, and to supply power to the main carrier unit and the slave carrier unit.

3. The apparatus according to claim 2, characterized in that, The power management module is also used to collect the low-voltage current of the main carrier unit and the low-voltage current of the slave carrier unit in real time, determine the first load condition of the main carrier unit and the second load condition of the slave carrier unit respectively, and upload them to the external terminal. The external terminal is also used to adjust the data tasks corresponding to the primary carrier unit and / or the secondary carrier unit in response to the first load condition and the second load condition.

4. The apparatus according to claim 1, characterized in that, The main carrier unit includes a terminal interaction module, a zero-crossing detection module, a first storage module, a first communication module, a first carrier driving module, and a first carrier receiving module; The terminal interaction module is used to receive data tasks and various functional interaction information sent by the external terminal through serial communication; The zero-crossing detection module is used to identify the moment when the AC voltage of the power line is zero and generate a pulse signal to the first carrier drive module. The first storage module is used to store the setting parameters of the main carrier unit and the data task; The first communication module is configured to send the data task to the slave carrier unit when the task type of the data task matches the task type corresponding to the slave carrier unit, or when the task volume of the first carrier driving module is greater than the unit execution threshold. The first carrier drive module is used to extract the signal to be transmitted in the data task and amplify it proportionally to generate a first DC carrier signal and transmit it to the carrier fusion unit; The first carrier receiving module is used to filter the carrier signal according to a preset specific frequency band when it receives the carrier signal, generate a first filtered signal and transmit it to the external terminal.

5. The apparatus according to claim 1, characterized in that, The slave carrier unit includes a second storage module, a second communication module, a second carrier driving module, and a second carrier receiving module; The second communication module is used to receive the data task; The second storage module is used to store the setting parameters of the slave carrier unit and the data task; The second carrier drive module is used to extract the signal to be transmitted in the data task and amplify it proportionally to generate a second DC carrier signal and transmit it to the main carrier unit; The second carrier receiving module is used to filter the carrier signal according to a preset specific frequency band when it receives the carrier signal, generate a second filtered signal and transmit it to the main carrier unit.

6. The apparatus according to claim 4 or 5, characterized in that, The main carrier unit and / or the slave carrier unit further includes an indicator light module; The indicator module is used to display the current working status and transmission / reception status of the master carrier unit and / or the slave carrier unit.

7. The apparatus according to claim 1, characterized in that, The DC blocking module is used to convert the first DC carrier signal into a first AC carrier signal, convert the second DC carrier signal into a second AC carrier signal, and fuse the first AC carrier signal and the second AC carrier signal to generate a fused carrier signal. The clamping protection module is used to detect the waveform parameters in the fused carrier signal in real time, and adjust the waveform of the first DC carrier signal and / or the second DC carrier signal according to the waveform parameters. The anti-collision module is used to monitor the channel quality of the fused carrier signal in real time and adjust the channel parameters of the master carrier unit and / or the slave carrier unit according to the monitoring results.

8. A power line carrier transmission method based on dual-core fusion, characterized in that, Applied to the power line carrier transmission device based on dual-core fusion as described in any one of claims 1-7, the method comprises: When the master carrier unit receives a data task sent by an external terminal, it executes the data task to generate a first DC carrier signal, or sends the data task to the slave carrier unit. When a data task sent by the main carrier unit is received from the carrier unit, the data task is executed to generate a second DC carrier signal; The first DC carrier signal and the second DC carrier signal are fused together and transmitted to the target terminal via a power line. When the main carrier unit or the slave carrier unit receives a carrier signal, the carrier signal is filtered and returned to the external terminal through the main carrier unit. The step of fusing the first DC carrier signal and the second DC carrier signal and transmitting them to the target terminal via a power line includes: The first DC carrier signal and the second DC carrier signal are converted into AC signals and fused to generate a fused carrier signal; The AC voltage within the power line is filtered, and the fused carrier signal is coupled to the power line and transmitted to the target terminal using a coupling coil; A switching switch is provided between the main carrier unit and the slave carrier unit respectively, which is used to adjust the switching switch with the lowest task priority according to the task priority of the main carrier unit and the task priority of the slave carrier unit when a communication conflict occurs between the first DC carrier signal and the second DC carrier signal. The signal amplitude and signal phase of the fused carrier signal are sampled; When the signal amplitude or the signal phase does not meet the preset conditions, the modulation parameters in the main carrier unit and the slave carrier unit are adjusted until the signal amplitude and the signal phase both meet the preset conditions.

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