A power complementary adaptive circuit of HPLC and RF dual-mode communication module

Abstract

The application discloses a power complementary adaptive circuit of a HPLC and RF dual-mode communication module, comprising a DC-to-DC step-down circuit, a first super capacitor, a second super capacitor, a first complementary circuit, a second complementary circuit, a first detection circuit, a second detection circuit, a first DC-to-DC step-up circuit, a second DC-to-DC step-up circuit, a first competition circuit and a second competition circuit; the DC-to-DC step-down circuit, the first super capacitor, the first complementary circuit, the first detection circuit, the first DC-to-DC step-up circuit and the first competition circuit constitute one power conversion path, and are used as the power supply of the HPLC; and the DC-to-DC step-down circuit, the second super capacitor, the second complementary circuit, the second detection circuit, the second DC-to-DC step-up circuit and the second competition circuit constitute another power conversion path, and are used as the power supply of the RF. The application has good response performance, high circuit flexibility, strong adaptability, high power utilization rate and small equipment size.

Description

Technical Field

[0001] This invention relates to the field of HPLC and RF dual-mode communication technology, and more specifically to a power complementary adaptive circuit for an HPLC and RF dual-mode communication module. Background Technology

[0002] Power communication networks are the foundation of power systems, supporting their rapid development through the adoption of secure and stable communication technologies and methods. Distribution communication networks are a crucial component of these networks, providing a communication foundation for data acquisition and operational status monitoring using advanced, reliable, and cost-effective communication technologies. A key application scenario for distribution communication networks is low-voltage distribution transformer substations. As the end point of the power system, the performance of these substations directly impacts the electricity experience for customers, making comprehensive and effective monitoring of their operational status essential. To achieve full communication coverage of substation-side equipment in the distribution network, dual-mode communication using High Speed ​​Power Line Carrier (HPLC) and Low Power Radio Frequency (RF) is currently employed.

[0003] However, due to various constraints, the power output of the transmitting power supply in dual-mode communication modules is severely limited, making it impossible to simultaneously meet the full-power transmission requirements of both HPLC and RF. Existing dual-mode communication module transmitting power supply designs generally fall into two categories: the first uses a single power supply. This approach is simple in principle but can lead to mutual interference or frequent communication failures; the second uses two separate power supplies. This approach is larger in size and has lower power utilization.

[0004] Based on the principles of the two existing types of dual-mode communication module power supplies, the first type uses a single power supply to provide both HPLC and RF transmission power, meaning the HPLC and RF transmission power supplies are combined. If one of the HPLC or RF transmission power is too high, it will severely affect the other, easily causing both HPLC and RF transmissions to fail simultaneously, leading to frequent communication failures. Given the power limitations of dual-mode communication modules, this results in mutual interference between HPLC and RF transmissions and low power utilization. The second type uses two separate power supplies. This solves the problem of mutual interference between HPLC and RF transmissions in the first type, but both power supplies need to be designed with higher power, significantly increasing the size. Furthermore, because the two power supplies are independent, the power utilization is low.

[0005] For the power supply of the HPLC and RF dual-mode communication modules in the above two schemes, if the load impedance of the power line is small and the distance between nodes is far, both the HPLC transmission power and the RF transmission power are required to be very high. This may cause frequent communication failures or cause overcurrent faults that damage the equipment. Summary of the Invention

[0006] The technical problem to be solved by this invention is a power complementary adaptive circuit for an HPLC and RF dual-mode communication module, which can effectively solve the defects of existing products such as low power utilization, large size, mutual interference, and poor flexibility.

[0007] The present invention is achieved through the following technical solution: a power complementary adaptive circuit for an HPLC and RF dual-mode communication module, comprising a DC to DC step-down circuit, a first supercapacitor, a second supercapacitor, a first complementary circuit, a second complementary circuit, a first detection circuit, a second detection circuit, a first DC to DC boost circuit, a second DC to DC boost circuit, a first competing circuit, and a second competing circuit.

[0008] The DC-to-DC step-down circuit, the first supercapacitor, the first complementary circuit, the first detection circuit, the first DC-to-DC boost circuit, and the first competing circuit constitute one power conversion path, which is an HPLC power supply; the DC-to-DC step-down circuit, the second supercapacitor, the second complementary circuit, the second detection circuit, the second DC-to-DC boost circuit, and the second competing circuit constitute another power conversion path, which is an RF power supply.

[0009] As a preferred technical solution, the first complementary circuit, the first detection circuit, the second complementary circuit, and the second detection circuit are all connected and constitute a power supply complementary adaptive unit.

[0010] As a preferred technical solution, the detection process of the power supply complementary adaptive unit is as follows:

[0011] The first detection circuit detects the current in the power supply path of the HPLC. If the current reaches the set value, a first control signal is generated. The first control signal controls the second complementary circuit to transfer the electrical energy of the second supercapacitor to the power supply path of the HPLC through the second complementary circuit.

[0012] The second detection circuit detects the current in the RF power supply path. If the current reaches a set value, a second control signal is generated. The second control signal controls the first complementary circuit to transfer the power of the first supercapacitor to the RF power supply path.

[0013] As a preferred technical solution, the first detection circuit includes a current sampling resistor R15, a transistor Q13, a bias voltage diode D12 and a resistor R16, and a signal output resistor R14; one end of the resistor R15 is connected to the first supercapacitor, the first complementary circuit, and the emitter of the transistor Q13, and the other end is connected to the first DC-to-DC boost circuit and one of the pins of the diode D12; the base of the transistor Q13 is connected to the other pin of the diode D12 and one of the pins of the resistor R16; the other pin of the resistor R16 is connected to the ground wire; and the collector of the transistor Q13 is connected to the second complementary circuit.

[0014] As a preferred technical solution, the first complementary circuit includes a diode D11 for controlling the current transfer direction, a MOSFET Q11, a bias resistor R12, a signal-to-level conversion transistor Q12, and a driving resistor R13; one end of the diode D11 is connected to a first supercapacitor, and the other end is connected to the source (S) terminal of the MOSFET Q11 and the bias resistor R12; the drain (D) terminal of the MOSFET Q11 is connected to a second supercapacitor; the gate (G) terminal of the MOSFET Q11 is connected to the other pin of the bias resistor R12 and the collector of the transistor Q12; the base of the transistor Q12 is connected to a second detection circuit; and the emitter of the transistor Q12 is connected to a ground wire.

[0015] As a preferred technical solution, the second detection circuit includes a current sampling resistor R25, a transistor Q23, a bias voltage diode D22 and a resistor R26, and a signal output resistor R24. One end of the resistor R25 is connected to the second supercapacitor, the second complementary circuit, and the emitter of the transistor Q23, and the other end is connected to the second DC-to-DC boost circuit and one of the pins of the diode D22. The base of the transistor Q23 is connected to the other pin of the diode D22 and one of the pins of the resistor R26. The other pin of the resistor R26 is connected to the ground wire. The collector of the transistor Q23 is connected to the first complementary circuit.

[0016] As a preferred technical solution, the second complementary circuit includes a diode D21 for controlling the current transfer direction, a MOSFET Q21, a bias resistor R22, a signal level conversion transistor Q22, and a drive resistor R23; one end of the diode D21 is connected to the second supercapacitor, and the other end is connected to the source (S) terminal of the MOSFET Q21 and the bias resistor R12; the drain (D) terminal of the MOSFET Q21 is connected to the first supercapacitor; the gate (G) terminal of the MOSFET Q21 is connected to the other pin of the bias resistor R22 and the collector of the transistor Q22; the base of the transistor Q22 is connected to the first detection circuit; and the emitter of the transistor Q22 is connected to the ground wire.

[0017] As a preferred technical solution, the first competing circuit includes diodes D14 and D15; one pin of diode D14 is connected to the first DC-to-DC boost circuit; one pin of diode D15 is connected to the 12V_IN input power supply; the other pin of diode D14 is connected to the other pin of diode D15, thereby providing the HPLC power supply HPLC_POW.

[0018] As a preferred technical solution, the second competing circuit includes diodes D24 and D25; one pin of diode D24 is connected to the second DC-to-DC boost circuit; one pin of diode D25 is connected to the 12V_IN input power supply; the other pin of diode D24 is connected to the other pin of diode D25, thereby providing RF power supply RF_POW.

[0019] The beneficial effects of this invention are:

[0020] (1) This invention has high power utilization and can effectively address the issue of power efficiency under conditions where input power is limited. The adaptive complementary approach between the two power supply channels effectively improves power utilization.

[0021] (2) The circuit of this invention has good response performance and can meet the requirements of fast response. By using high-speed switching devices and a fast detection and control mechanism, the delay is minimized, which can effectively improve the response speed of the circuit in high-speed communication;

[0022] (3) The circuit device of the present invention is small in size and highly adaptable, and can be well adapted to the use of HPLC and RF dual-mode communication modules and terminals. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a circuit structure diagram of this embodiment;

[0025] Figure 2 This is the circuit schematic diagram of this embodiment;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. DC to DC step-down circuit; 2. Supercapacitor; 3. First complementary circuit; 4. First detection circuit;

[0028] 5. First DC-DC boost converter circuit; 6. First competing circuit; 7. Second supercapacitor; 8. Second complementary circuit; 9. Second detection circuit; 10. Second DC-DC boost converter circuit; 11. Second competing circuit; Detailed Implementation

[0029] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0030] To illustrate the technical solution described in this invention, specific embodiments are provided below. Figure 1-2 A circuit diagram provided by an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown.

[0031] The power complementary adaptive circuit of the HPLC and RF dual-mode communication module provided in this embodiment uses a high-performance supercapacitor for energy storage, a MOSFET as a switch, and a high-speed transistor for current acquisition, conversion, and control of the MOSFET. The 12V input power supply uses inductors and capacitors for filtering, effectively suppressing interference and surges. A DC / DC converter chip with current-limiting protection is selected to effectively protect the safety of the entire circuit. The MOSFET, as a switching device, offers fast switching speed. A precision sampling resistor is used to detect the current in the circuit path, resulting in no delay and a fast response. Furthermore, the sampling resistor provides current limiting in case of overcurrent, protecting the circuit from short-circuit faults when abnormal conditions occur in the output stage.

[0032] like Figure 1As shown, the power complementary adaptive circuit of the HPLC and RF dual-mode communication module in this embodiment includes a DC-DC buck converter, a first supercapacitor, a second supercapacitor, a first complementary circuit, a second complementary circuit, a first detection circuit, a second detection circuit, a first DC-DC boost converter, a second DC-DC boost converter, a first competing circuit, and a second competing circuit. Specifically, one power conversion path, consisting of the DC-DC buck converter, the first supercapacitor, the first complementary circuit, the first detection circuit, the first DC-DC boost converter, and the first competing circuit, is the HPLC power supply; the other power conversion path, consisting of the DC-DC buck converter, the second supercapacitor, the second complementary circuit, the second detection circuit, the second DC-DC boost converter, and the second competing circuit, is the RF power supply. The functions of the above circuits are as follows: the DC-to-DC step-down circuit can step down the input power supply and output a stable power supply voltage VCC through voltage regulation and filtering for use by the subsequent stage, while providing charging voltage for the first and second supercapacitors; the first detection circuit can detect the current in the HPLC power supply path and generate a first control signal, which controls the second complementary circuit; the second complementary circuit can transfer and collect the power of the second supercapacitor to the HPLC power supply path; the second detection circuit can detect the current in the RF power supply path and generate a second control signal, which controls the first complementary circuit; the first complementary circuit can transfer and collect the power of the first supercapacitor to the RF power supply path; by combining the first detection circuit, the second complementary circuit, the second detection circuit, and the first complementary circuit according to the above-described control method, complementary and adaptive power supply between the two power supply paths can be achieved.

[0033] like Figure 2 As shown, the DC-to-DC step-down circuit includes an input filter inductor L1 and capacitor C1, a suitable power conversion chip U1, a power inductor L2, a voltage dynamic optimization resistor R2 and capacitor C2, voltage sampling feedback voltage divider resistors R3 and R4, a power conversion chip enable control resistor R1, and a filter capacitor C3.

[0034] In this embodiment, the first supercapacitor includes a charging current-limiting resistor R11 and a supercapacitor C11; during charging, the charging current is controlled within a certain current range, and the formula for calculating the maximum current is: I = VCC / R11, where VCC is the output DC voltage of the DC to DC step-down circuit.

[0035] In this embodiment, the second supercapacitor includes a charging current-limiting resistor R21 and a supercapacitor C21; during charging, the charging current is controlled within a certain current range, and the maximum current is calculated using the formula: I = VCC / R21, where VCC is the output DC voltage of the DC-to-DC step-down circuit.

[0036] In this embodiment, the first complementary circuit includes a diode D11 for controlling the current transfer direction, a MOSFET Q11, a bias resistor R12, a signal-2 level conversion transistor Q12, and a driving resistor R13; one end of the diode D11 is connected to a first supercapacitor, and the other end is connected to the source (S) of the MOSFET Q11 and the bias resistor R12; the drain (D) of the MOSFET Q11 is connected to a second supercapacitor; the gate (G) of the MOSFET Q11 is connected to the other pin of the bias resistor R12 and the collector of the transistor Q12; the base of the transistor Q12 is connected to a second detection circuit; and the emitter of the transistor Q12 is connected to a ground wire.

[0037] In this embodiment, the second complementary circuit includes a diode D21 for controlling the current transfer direction, a MOSFET Q21, a bias resistor R22, a signal level conversion transistor Q22, and a drive resistor R23; one end of the diode D21 is connected to the second supercapacitor, and the other end is connected to the source (S) terminal of the MOSFET Q21 and the bias resistor R12; the drain (D) terminal of the MOSFET Q21 is connected to the first supercapacitor; the gate (G) terminal of the MOSFET Q21 is connected to the other pin of the bias resistor R22 and the collector of the transistor Q22; the base of the transistor Q22 is connected to the first detection circuit; and the emitter of the transistor Q22 is connected to the ground wire.

[0038] In this embodiment, the first detection circuit includes a current sampling resistor R15, a transistor Q13, a bias voltage diode D12 and a resistor R16, and a signal output resistor R14. One end of the resistor R15 is connected to the first supercapacitor, the first complementary circuit, and the emitter of the transistor Q13, and the other end is connected to the first DC-to-DC boost circuit and one of the pins of the diode D12. The base of the transistor Q13 is connected to the other pin of the diode D12 and one of the pins of the resistor R16. The other pin of the resistor R16 is connected to the ground wire. The collector of the transistor Q13 is connected to the second complementary circuit.

[0039] In this embodiment, the second detection circuit includes a current sampling resistor R25, a transistor Q23, a bias voltage diode D22 and a resistor R26, and a signal output resistor R24. One end of the resistor R25 is connected to the second supercapacitor, the second complementary circuit, and the emitter of the transistor Q23, and the other end is connected to the second DC-to-DC boost circuit and one of the pins of the diode D22. The base of the transistor Q23 is connected to the other pin of the diode D22 and one of the pins of the resistor R26. The other pin of the resistor R26 is connected to the ground wire. The collector of the transistor Q23 is connected to the first complementary circuit.

[0040] In this embodiment, the first DC-to-DC boost circuit includes an input filter capacitor C12, a suitable power conversion chip U11, a power inductor L11, voltage sampling feedback voltage divider resistors R18 and R19, a power conversion chip enable control resistor R17, and a filter capacitor C13.

[0041] In this embodiment, the second DC-to-DC boost circuit includes an input filter capacitor C22, a suitable power conversion chip U21, a power inductor L21, voltage sampling feedback voltage divider resistors R28 and R29, a power conversion chip enable control resistor R27, and a filter capacitor C23.

[0042] In this embodiment, the first competing circuit includes diodes D14 and D15; one pin of diode D14 is connected to the first DC-to-DC boost circuit; one pin of diode D15 is connected to the 12V_IN input power supply; the other pin of diode D14 is connected to the other pin of diode D15, thereby providing the HPLC power supply HPLC_POW.

[0043] In this embodiment, the second competing circuit includes diodes D24 and D25; one pin of diode D24 is connected to the second DC-to-DC boost circuit; one pin of diode D25 is connected to the 12V_IN input power supply; the other pin of diode D24 is connected to the other pin of diode D25, thereby providing RF power supply RF_POW.

[0044] The power complementary adaptive circuit of the HPLC and RF dual-mode communication module provided in this embodiment uses a MOSFET as a switch, a precision sampling and high-speed resistor transistor for current acquisition and conversion, and selects a DC / DC converter chip with current limiting protection to effectively protect the safety of the entire circuit. Appropriate selection of the sampling resistor provides a certain current limiting effect to ensure the safety and reliability of the circuit. Its technical advantages are: the power complementary adaptive circuit of this HPLC and RF dual-mode communication module has fast and efficient response performance, high circuit flexibility and strong adaptability, high power utilization, and small device size, making it well-suited for the use of HPLC and RF dual-mode communication modules.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A power complementary adaptive circuit for HPLC and RF dual mode communication module, characterized in that, The DC-DC step-down circuit, the first super capacitor, the first complementary circuit, the first detection circuit, the first DC-DC step-up circuit and the first competition circuit constitute one power conversion path, which is an HPLC power supply; the DC-DC step-down circuit, the second super capacitor, the second complementary circuit, the second detection circuit, the second DC-DC step-up circuit and the second competition circuit constitute another power conversion path, which is an RF power supply; and the first complementary circuit, the first detection circuit, the second complementary circuit and the second detection circuit constitute a power complementary adaptive unit. The detection process of the power complementary adaptive unit is as follows: The first detection circuit detects the current of the HPLC power supply path, and if the current reaches a set value, a first control signal is generated to control the second complementary circuit to transfer and collect the electric energy of the second super capacitor to the HPLC power supply path through the second complementary circuit. The second detection circuit detects the current of the RF power supply path, and if the current reaches a set value, a second control signal is generated to control the first complementary circuit to transfer and collect the electric energy of the first super capacitor to the RF power supply path through the first complementary circuit. The first detection circuit includes a current sampling resistor R15, a transistor Q13, a bias voltage diode D12, a resistor R16 and a signal output resistor R14; one end of the resistor R15 is connected to the first super capacitor, the first complementary circuit and the emitter of the transistor Q13, and the other end is connected to the first DC-DC step-up circuit and one pin of the diode D12; the base of the transistor Q13 is connected to the other pin of the diode D12 and one pin of the resistor R16; the other pin of the resistor R16 is connected to the ground line; and the collector of the transistor Q13 is connected to the second complementary circuit.

2. The power supply complementary adaptive circuit for HPLC and RF dual-mode communication module according to claim 1, characterized in that: The first complementary circuit includes a diode D11, a MOS transistor Q11, a bias resistor R12, a signal 2 level conversion transistor Q12 and a driving resistor R13; one end of the diode D11 is connected to the first super capacitor, and the other end is connected to the S pole of the transistor MOS Q11 and the bias resistor R12; the D pole of the MOS transistor Q11 is connected to the second super capacitor; the G pole of the MOS transistor Q11 is connected to the other pin of the bias resistor R12 and the collector of the transistor Q12; the base of the transistor Q12 is connected to the second detection circuit; and the emitter of the transistor Q12 is connected to the ground line.

3. The power complementary adaptive circuit for HPLC and RF dual-mode communication module according to claim 1, wherein: The second detection circuit comprises a current sampling resistor R25, a transistor Q23, a bias voltage diode D22 and a resistor R26, and a signal output resistor R24; one end of the resistor R25 is connected with the second super capacitor, the second complementary circuit and the emitter of the transistor Q23, and the other end is connected with one pin of the second DC-DC voltage boosting circuit and the diode D22; the base of the transistor Q23 is connected to the other pin of the diode D22 and one pin of the resistor R26; the other pin of the resistor R26 is connected to the ground wire; the collector of the transistor Q23 is connected to the first complementary circuit.

4. The power supply complementary adaptive circuit for HPLC and RF dual-mode communication module according to claim 1, characterized in that: The second complementary circuit comprises a diode D21 for controlling the current transfer direction, a MOS transistor Q21, a bias resistor R22, a signal 1 level conversion transistor Q22 and a driving resistor R23; one end of the diode D21 is connected to the second super capacitor, and the other end is connected to the S pole of the MOS transistor Q21 and the bias resistor R12; the D pole of the MOS transistor Q21 is connected to the first super capacitor; the G pole of the MOS transistor Q21 is connected to the other pin of the bias resistor R22 and the collector of the transistor Q22; the base of the transistor Q22 is connected to the first detection circuit; the emitter of the transistor Q22 is connected to the ground wire.

5. The power complementary adaptive circuit for HPLC and RF dual-mode communication module according to claim 1, wherein: The first competition circuit comprises a diode D14 and a diode D15; one pin of the diode D14 is connected to the first DC-DC voltage boosting circuit; one pin of the diode D15 is connected to the 12V_IN input power supply; the other pin of the diode D14 is connected to the other pin of the diode D15, thereby providing the HPLC power supply HPLC_POW.

6. The power supply complementary adaptive circuit for HPLC and RF dual-mode communication module according to claim 5, wherein: The second competition circuit comprises a diode D24 and a diode D25; one pin of the diode D24 is connected to the second DC-DC voltage boosting circuit; one pin of the diode D25 is connected to the 12V_IN input power supply; the other pin of the diode D24 is connected to the other pin of the diode D25, thereby providing the RF power supply RF_POW.

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