Electric power broadband carrier wave and micropower wireless dual-mode communication circuit

Abstract

The invention provides an electric power broadband carrier and micropower wireless dual-mode communication circuit, which comprises a secondary power supply voltage regulation circuit in power supply connection with a dual-mode communication main control circuit, and the output end of a broadband carrier signal receiving circuit is connected with the input end of the dual-mode communication main control circuit. The output end of the dual-mode communication main control circuit is connected with the input end of the broadband carrier signal transmitting circuit, the dual-mode communication main control circuit is in communication connection with the micro-power wireless signal transmitting and receiving circuit, and a dual-mode communication main control chip U10 with the model of SPE8100 is arranged in the dual-mode communication main control circuit. The dual-mode communication main control chip U10 supports broadband carrier signal communication and micro-power wireless signal communication. The beneficial effects of the invention are that the micro-power wireless signal transmitting and receiving circuit is added, and power failure reporting can be carried out through the micro-power wireless signal transmitting and receiving circuit when a power line is disconnected due to a fault.

Description

Technical Field

[0001] This invention relates to the field of communication circuit technology, specifically to a dual-mode communication circuit that combines power broadband carrier and low-power wireless communication. Background Technology

[0002] In power systems, power line broadband carrier communication (HPLC) is a fundamental communication method unique to power systems. For low-voltage distribution networks, HPLC, based on the power line network for wired communication, significantly improves the availability and reliability of power line carrier communication, making HPLC technology more attractive for application. Utilizing low-voltage power lines to transmit user electricity consumption data for timely and effective collection, management, and statistics is currently recognized as the best solution both domestically and internationally. Whether it's the State Grid's power user electricity consumption information collection system or the Southern Power Grid's low-voltage centralized meter reading system, the last-mile communication technology primarily employs HPLC. As power grid companies continue to expand their business, many new and in-depth application functions are being added to the existing system functions.

[0003] However, in past practical applications, due to the variety of electrical appliances on power lines and the complexity of some radio stations, single-carrier communication still has its shortcomings. When a power line is disconnected due to a fault, it is impossible to effectively report the power outage. Therefore, another communication technology is needed to supplement it and improve the user experience. Summary of the Invention

[0004] To address the problems in existing technologies, this invention provides a dual-mode communication circuit combining power broadband carrier and low-power wireless communication. By incorporating mutually cooperating power supplies, a primary power supply voltage adjustment circuit, a secondary power supply voltage adjustment circuit, a dual-mode communication main control circuit, a broadband carrier signal transmission circuit, a broadband carrier signal receiving circuit, and a low-power wireless signal transmission and reception circuit, and by adding a low-power wireless signal transmission and reception circuit as a supplement, this circuit can report power outages via the low-power wireless signal transmission and reception circuit when a power line is disconnected due to a fault. This solves the problem of the shortcomings of existing single broadband carrier communication, which cannot effectively report power outages when a power line is disconnected due to a fault.

[0005] This invention provides a dual-mode communication circuit for power broadband carrier and low-power wireless communication, comprising a power supply, a primary power supply voltage adjustment circuit, a secondary power supply voltage adjustment circuit, a dual-mode communication main control circuit, a broadband carrier signal transmitting circuit, a broadband carrier signal receiving circuit, and a low-power wireless signal transmitting and receiving circuit. The power supply is connected to the primary power supply voltage adjustment circuit and the broadband carrier signal transmitting circuit. The primary power supply voltage adjustment circuit is connected to the secondary power supply voltage adjustment circuit and the dual-mode communication main control circuit. The secondary power supply voltage adjustment circuit is connected to the dual-mode communication main control circuit. The output terminal of the broadband carrier signal receiving circuit is connected to the dual-mode communication main control circuit. The input terminal of the circuit is connected, and the output terminal of the dual-mode communication main control circuit is connected to the input terminal of the broadband carrier signal transmitting circuit. The dual-mode communication main control circuit is communicatively connected to the low-power wireless signal transmitting and receiving circuit. The dual-mode communication main control circuit is equipped with a dual-mode communication main control chip U10 of model SPE8100. The dual-mode communication main control chip U10 supports broadband carrier signal communication and low-power wireless signal communication. The dual-mode communication main control circuit can control the broadband carrier signal transmitting circuit to transmit user power consumption data, and can detect power outage events and control the low-power wireless signal transmitting and receiving circuit to report power outage information and transmit user power consumption data after a power outage event occurs.

[0006] The present invention is further improved by including a dual-mode communication main control chip U10 in the dual-mode communication main control circuit. The dual-mode communication main control chip U10 has 69 pins. Pins 7, 10, and 14 of the dual-mode communication main control chip U10 are connected to the output of the first-stage power supply voltage adjustment circuit. Pins 9 and 11 of the dual-mode communication main control chip U10 are connected to the output of the second-stage power supply voltage adjustment circuit. Pins 12, 60, and 61 of the dual-mode communication main control chip U10 are connected to the input of the broadband carrier signal transmission circuit. Pins 65 and 66 of the dual-mode communication main control chip U10 are connected to the output of the broadband carrier signal receiving circuit. Pins 46, 23, 25, and 27 of the dual-mode communication main control chip U10 are communicatively connected to the low-power wireless signal transmission and reception circuit.

[0007] In a further improvement, the dual-mode communication main control circuit also includes a communication serial port J3, photodiode D5, photodiode D3, a reset resistor R35, a reset capacitor C64, a reset capacitor C65, a resistor R37, a resistor R58, and a resistor R60. The communication serial port J3 is connected to pins 36 and 37 of the dual-mode communication main control chip U10. The anode of photodiode D5 is connected to pin 2 of the dual-mode communication main control chip U10. The anode of photodiode D3 is connected to pin 15 of the dual-mode communication main control chip U10. One end of the reset resistor R35 is connected to the reset capacitor C64. One end of resistor R4, one end of reset capacitor C65, and pin 49 of dual-mode communication main control chip U10 are connected. The other end of reset resistor R35 is connected to the output of the first-stage power supply voltage adjustment circuit. The other ends of reset capacitor C64 and reset capacitor C65 are grounded. One end of resistor R37 is connected to the output of the first-stage power supply voltage adjustment circuit. The other end of resistor R37 is connected to one end of resistor R58. The other end of resistor R58 is connected to one end of resistor R60 and pin 64 of dual-mode communication main control chip U10. The other end of resistor R60 is grounded.

[0008] The present invention is further improved in that the low-power wireless signal transmitting and receiving circuit includes a low-power wireless communication chip U11, a transistor Q4, a resistor R63, a capacitor C69, a helical antenna ANT1, and a bidirectional protection diode D4. The low-power wireless communication chip U11 has 6 pins. The 6th pin of the low-power wireless communication chip U11 is connected to one end of the resistor R63 and the 46th pin of the dual-mode communication main control chip U10. The other end of the resistor R63 is connected to the base of the transistor Q4. The 4th pin of the low-power wireless communication chip U11 is connected to the collector of the transistor Q4. The 5th pin of the low-power wireless communication chip U11 is connected to one end of the capacitor C69. The other end of the capacitor C69 is connected to one end of the bidirectional protection diode D4 and the helical antenna ANT1. The emitter of the transistor Q4 and the other end of the bidirectional protection diode D4 are grounded.

[0009] In a further improvement, the low-power wireless signal transmitting and receiving circuit further includes a filter inductor L11, a filter capacitor C67, a filter capacitor C66, a filter inductor L16, a filter capacitor C73, a filter inductor L19, a filter capacitor C77, and a filter capacitor C78. The first pin of the low-power wireless communication chip U11 is connected to one end of the filter capacitor C77, and the other end of the filter capacitor C77 is connected to one end of the filter capacitor C78. The other end of the filter capacitor C78 is connected to one end of the filter inductor L19 and the 27th pin of the dual-mode communication main control chip U10. The pins are connected, the other end of the filter inductor L19 is grounded, the third pin of the low-power wireless communication chip U11 is connected to one end of the filter capacitor C67, the other end of the filter capacitor C67 is connected to one end of the filter inductor L11, the other end of the filter inductor L11 is connected to one end of the filter capacitor C66, the other end of the filter capacitor C66 is connected to one end of the filter inductor L16, the other end of the filter inductor L16 is connected to one end of the filter capacitor C73, and the other end of the filter capacitor C73 is connected to the 25th pin of the dual-mode communication main control chip U10.

[0010] The present invention is further improved in that the first-stage power supply voltage adjustment circuit includes a power supply voltage adjustment chip U2, a field-effect transistor Q3, a diode D3, a diode D7, a resistor R33, a resistor R34, a resistor R35, and a resistor R37. The power supply voltage adjustment chip U2 has 10 pins. Pin 3 of the power supply voltage adjustment chip U2 is connected to the negative terminal of diode D7. The positive terminal of diode D7 is connected to the negative terminal of diode D3. The positive terminal of diode D3 is connected to one end of resistor R35 and one end of resistor R37. Pin 9 of the power supply voltage adjustment chip U2 is connected to the power supply of the second-stage power supply voltage adjustment circuit and pins 7, 10, and 14 of the dual-mode communication main control chip U10. The drain of the field-effect transistor Q3 is connected to one end of resistor R34 and one end of resistor R33. The other end of resistor R34 is connected to the power supply. The gate of the field-effect transistor Q3 is connected to the other end of resistor R35. The source of the field-effect transistor Q3 and the other end of resistor R37 are grounded.

[0011] The present invention is further improved in that the secondary power supply voltage adjustment circuit includes a voltage adjustment chip U7, a filter inductor L9, a filter inductor L10, a filter capacitor C47, a filter capacitor C48, and a filter capacitor C46. The voltage adjustment chip U7 has 5 pins. Pin 4 of the voltage adjustment chip U7 is connected to pin 9 of the power supply voltage adjustment chip U2 and one end of the filter capacitor C46. Pin 3 of the voltage adjustment chip U7 is connected to one end of the filter inductor L9. The other end of the filter inductor L9 is connected to one end of the filter capacitor C47, one end of the filter capacitor C48, and one end of the filter inductor L10. The other end of the filter inductor L10 is connected to pins 9 and 11 of the dual-mode communication main control chip U10. The other ends of the filter capacitors C46, ​​C47, and C48 are grounded.

[0012] The present invention is further improved in that the broadband carrier signal transmitting circuit includes a broadband carrier signal chip U1, a filter capacitor C3, a filter capacitor C10, and a resistor R1. The broadband carrier signal chip U1 has 24 pins. The first pin of the broadband carrier signal chip U1 is connected to the 61st pin of the dual-mode communication main control chip U10 through the filter capacitor C3. The second pin of the broadband carrier signal chip U1 is connected to the 60th pin of the dual-mode communication main control chip U10 through the filter capacitor C10. The 23rd and 24th pins of the broadband carrier signal chip U1 are connected to the 12th pin of the dual-mode communication main control chip U10 through the resistor R1. The 12th and 21st pins of the broadband carrier signal chip U1 are connected to the power supply.

[0013] The present invention is further improved in that the broadband carrier signal receiving circuit includes a carrier signal receiving coil AT1, resistors R28 and R32, capacitors C22 and C28, inductors L1 and L4, capacitors C21 and C27, a matching resistor R30, a bidirectional protection diode D1, and a bidirectional protection diode D2. One end of resistor R28 and one end of resistor R32 are connected to the carrier signal receiving coil AT1. The other end of resistor R28 is connected to one end of inductor L1 through capacitor C22. The other end of inductor L1 is connected to... One end of capacitor C21, one end of bidirectional protection diode D1, and one end of matching resistor R30 are connected together. The other end of capacitor C21 is connected to pin 65 of dual-mode communication main control chip U10. The other end of resistor R32 is connected to one end of inductor L4 through capacitor C28. The other end of inductor L4 is connected to one end of capacitor C27, one end of bidirectional protection diode D1, and one end of matching resistor R30. The other end of capacitor C27 is connected to pin 66 of dual-mode communication main control chip U10.

[0014] The present invention is further improved in that the broadband carrier signal chip U1 is model THS6222, the low-power wireless communication chip U11 is model PE4259 / UPG2179TB-E4A, the power supply voltage adjustment chip U2 is model ETA-9098, the voltage adjustment chip U7 is model ETA3406S2F, and the power supply voltage is 12V.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: It provides a dual-mode communication circuit of power broadband carrier and low-power wireless. By setting up mutually cooperating power supply, primary power supply voltage adjustment circuit, secondary power supply voltage adjustment circuit, dual-mode communication main control circuit, broadband carrier signal transmission circuit, broadband carrier signal receiving circuit, and low-power wireless signal transmission and reception circuit in the dual-mode communication circuit, the dual-mode communication main control circuit can control the broadband carrier signal transmission circuit to transmit user power consumption data, and can detect power outage events and control the low-power wireless signal transmission and reception circuit to report power outage information and transmit user power consumption data after the power outage event occurs. The addition of the low-power wireless signal transmission and reception circuit as a supplement enables power outage reporting through the low-power wireless signal transmission and reception circuit when the power line is disconnected due to a fault. At the same time, the dual-mode communication main control circuit controls the broadband carrier signal transmission circuit, the broadband carrier signal receiving circuit, and the low-power wireless signal transmission and reception circuit respectively, which can reduce interference and communication anomalies on power lines in some complex transformer areas, and solve the problem that the single broadband carrier communication in the prior art is insufficient and cannot effectively report power outages when the power line is disconnected due to a fault. Attached Figure Description

[0016] To more clearly illustrate the solutions in this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a block diagram illustrating the principle of the dual-mode communication circuit of power broadband carrier and low-power wireless of the present invention. Figure 2 This is a circuit diagram of the dual-mode communication main control circuit of the present invention; Figure 3 This is a circuit diagram of the low-power wireless signal transmitting and receiving circuit of the present invention; Figure 4 This is a circuit diagram of the first-stage power supply voltage adjustment circuit of the present invention; Figure 5 This is a circuit diagram of the secondary power supply voltage adjustment circuit of the present invention; Figure 6 This is a circuit diagram of the broadband carrier signal transmission circuit of the present invention; Figure 7 This is a circuit diagram of the broadband carrier signal receiving circuit of the present invention. Detailed Implementation

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figures 1-7 As shown, the present invention provides a dual-mode communication circuit for power broadband carrier and low-power wireless communication, including a power supply, a primary power supply voltage adjustment circuit, a secondary power supply voltage adjustment circuit, a dual-mode communication main control circuit, a broadband carrier signal transmitting circuit, a broadband carrier signal receiving circuit, and a low-power wireless signal transmitting and receiving circuit. The power supply is connected to the primary power supply voltage adjustment circuit and the broadband carrier signal transmitting circuit. The primary power supply voltage adjustment circuit is connected to the secondary power supply voltage adjustment circuit and the dual-mode communication main control circuit. The secondary power supply voltage adjustment circuit is connected to the dual-mode communication main control circuit. The output terminal of the broadband carrier signal receiving circuit is connected to the input terminal of the dual-mode communication main control circuit. The output terminal of the dual-mode communication main control circuit is connected to the input terminal of the broadband carrier signal transmitting circuit. The dual-mode communication main control circuit is communicatively connected to the low-power wireless signal transmitting and receiving circuit. The dual-mode communication main control circuit contains a dual-mode communication main control chip U10 of model SPE8100, which supports broadband carrier signal communication and low-power wireless signal communication. In this embodiment, the dual-mode communication main control circuit can control the broadband carrier signal transmission circuit to transmit user power consumption data, and can detect power outage events and control the low-power wireless signal transmission and reception circuit to report power outage information and transmit user power consumption data after the power outage event occurs. The addition of the low-power wireless signal transmission and reception circuit as a supplement enables power outage reporting through the low-power wireless signal transmission and reception circuit when the power line is disconnected due to a fault. At the same time, the dual-mode communication main control circuit controls the broadband carrier signal transmission circuit, the broadband carrier signal reception circuit, and the low-power wireless signal transmission and reception circuit respectively, which can reduce interference and communication anomalies on power lines in some complex transformer areas.

[0022] like Figure 2As shown, the dual-mode communication main control circuit includes a dual-mode communication main control chip U10, which has 69 pins. Pins 7, 10, and 14 of the dual-mode communication main control chip U10 are connected to the output of the first-stage power supply voltage adjustment circuit; pins 9 and 11 are connected to the output of the second-stage power supply voltage adjustment circuit; pins 12, 60, and 61 are connected to the input of the broadband carrier signal transmitting circuit; pins 65 and 66 are connected to the output of the broadband carrier signal receiving circuit; and pins 46, 23, 25, and 27 are connected to the low-power wireless signal transmitting and receiving circuit. The dual-mode communication main control circuit also includes a communication serial port J3, photodiodes D5 and D3, a reset resistor R35, a reset capacitor C64 and C65, and a resistor R3. 7. Resistors R58 and R60, wherein the communication serial port J3 is connected to pins 36 and 37 of the dual-mode communication main control chip U10; the anode of photodiode D5 is connected to pin 2 of the dual-mode communication main control chip U10; the anode of photodiode D3 is connected to pin 15 of the dual-mode communication main control chip U10; one end of reset resistor R35 is connected to one end of reset capacitor C64, one end of reset capacitor C65, and pin 49 of the dual-mode communication main control chip U10; the other end of reset resistor R35 is connected to the output of the first-stage power supply voltage adjustment circuit; the other ends of reset capacitor C64 and C65 are grounded; one end of resistor R37 is connected to the output of the first-stage power supply voltage adjustment circuit; the other end of resistor R37 is connected to one end of resistor R58; the other end of resistor R58 is connected to one end of resistor R60 and pin 64 of the dual-mode communication main control chip U10; the other end of resistor R60 is grounded. In this embodiment, Figure 2This is the main control circuit for dual-mode communication. The dual-mode communication main control chip U10 is model SPE8100. The dual-mode communication main control chip U10 is a system-on-a-chip based on power broadband carrier and low-power wireless dual-mode communication device. It supports broadband carrier communication and wireless communication. The power supply is 12V, which is converted to 3.3V by a first-stage power supply voltage adjustment circuit and to 1.2V by a second-stage power supply voltage adjustment circuit to power the dual-mode communication main control chip U10. The dual-mode communication main control chip U10 integrates a power broadband carrier communication module and a low-power wireless communication module. Communication serial port J3 is used for data communication. Photodiodes D5 and D3 are used for communication operation indication. A reset circuit consisting of reset resistor R35, reset capacitor C64, and reset capacitor C65 is used for power-on reset of the dual-mode communication main control chip U10. A reference voltage circuit consisting of resistors R37, R58, and R60 is used for the ADC reference voltage for communication signal acquisition. The circuit also includes decoupling capacitors for each power supply pin of the dual-mode communication main control chip U10, which improves power supply stability and ensures the reliability of chip operation.

[0023] like Figure 3As shown, the low-power wireless signal transmitting and receiving circuit includes a low-power wireless communication chip U11, a transistor Q4, a resistor R63, a capacitor C69, a helical antenna ANT1, and a bidirectional protection diode D4. The low-power wireless communication chip U11 is model PE4259 / UPG2179TB-E4A and has six pins. Pin 6 of U11 is connected to one end of resistor R63 and pin 46 of the dual-mode communication main control chip U10. The other end of resistor R63 is connected to the base of transistor Q4. Pin 4 of U11 is connected to the collector of transistor Q4. Pin 5 of U11 is connected to one end of capacitor C69. The other end of capacitor C69 is connected to one end of the bidirectional protection diode D4 and the helical antenna ANT1. The emitter of transistor Q4 and the other end of the bidirectional protection diode D4 are grounded. The low-power wireless signal transmitting and receiving circuit also includes a filter inductor L. 11. Filter capacitors C67, C66, L16, C73, L19, C77, and C78. Pin 1 of the low-power wireless communication chip U11 is connected to one end of filter capacitor C77. The other end of filter capacitor C77 is connected to one end of filter capacitor C78. The other end of filter capacitor C78 is connected to one end of filter inductor L19 and pin 27 of the dual-mode communication main control chip U10. The other end of filter inductor L19 is grounded. Pin 3 of the low-power wireless communication chip U11 is connected to one end of filter capacitor C67. The other end of filter capacitor C67 is connected to one end of filter inductor L11. The other end of filter inductor L11 is connected to one end of filter capacitor C66. The other end of filter capacitor C66 is connected to one end of filter inductor L16. The other end of filter inductor L16 is connected to one end of filter capacitor C73. The other end of filter capacitor C73 is connected to pin 25 of the dual-mode communication main control chip U10.In this embodiment, the low-power wireless communication chip U11 is model PE4259 / UPG2179TB-E4A. The low-power wireless communication signal is the RFO signal output by the dual-mode communication main control chip U10, which is then passed through a balun circuit and a frequency selection circuit, and finally output through the radio frequency transceiver switch of the low-power wireless communication chip U11. The dual-mode communication main control chip U10 controls the transistor Q4 to switch the RF switch of the low-power wireless communication chip U11 for receiving and transmitting. The signal is filtered by a low-pass filter circuit composed of filter inductor L11, filter capacitor C67, and filter capacitor C66 to remove second and third harmonic noise and other noise, and then transmitted through the helical antenna ANT1. After receiving the wireless RF communication, the helical antenna ANT1 is set to receive mode by the low-pass filter and the low-power wireless communication chip U11. The received signal is filtered and impedance matched by the OUT1 output of the low-power wireless communication chip U11 and the filter circuit composed of filter capacitor C77, filter capacitor C78, ​​and filter inductor L19, and then transmitted to the RFI pin of the dual-mode communication main control chip U10 for wireless communication signal demodulation. The bidirectional protection diode D4 is a protection device to protect the low-power wireless communication chip U11 from damage by electrostatic discharge introduced through the antenna.

[0024] like Figure 4 As shown, the primary power supply voltage regulation circuit includes a power supply voltage regulation chip U2, a field-effect transistor Q3, diodes D3 and D7, resistors R33, R34, R35, and R37. The power supply voltage regulation chip U2 is an ETA-9098 model with 10 pins. Pin 3 of U2 is connected to the cathode of diode D7, the anode of diode D7 is connected to the cathode of diode D3, and the anode of diode D3 is connected to resistor R37. One end of resistor R35 and one end of resistor R37 are connected. Pin 9 of power supply voltage regulator chip U2 is connected to the secondary power supply voltage regulation circuit and pins 7, 10, and 14 of dual-mode communication main control chip U10 for power supply. The drain of MOSFET Q3 is connected to one end of resistor R34 and one end of resistor R33. The other end of resistor R34 is connected to the power supply. The gate of MOSFET Q3 is connected to the other end of resistor R35. The source of MOSFET Q3 and the other end of resistor R37 are grounded. The power supply voltage is 12V. In this embodiment, the power supply voltage regulator chip U2 is model ETA9098. The power supply voltage regulator chip U2 can convert 12V to 3.3V to provide operating power to dual-mode communication main control chip U10. Figure 4As shown, the power outage detection circuit, composed of MOSFET Q3, diode D3, resistor R33, resistor R34, resistor R35, and resistor R37, can detect whether there is a power outage. When the 12V power supply voltage is lower than 9.5V, the MCU_12V outputs a high level, indicating a power outage. The dual-mode communication main control chip U10 can report the power outage through the low-power wireless signal transmission and reception circuit, as well as save the power outage data.

[0025] like Figure 5 As shown, the secondary power supply voltage regulation circuit includes a voltage regulation chip U7, filter inductors L9 and L10, filter capacitors C47, C48, and C46. The voltage regulation chip U7 is an ETA3406S2F chip with five pins. Pin 4 of U7 is connected to pin 9 of the power supply voltage regulation chip U2 and one end of filter capacitor C46. Pin 3 of U7 is connected to one end of filter inductor L9. The other end of filter inductor L9 is connected to one end of filter capacitors C47, C48, and L10. The other end of filter inductor L10 is connected to pins 9 and 11 of the dual-mode communication main control chip U10. The other ends of filter capacitors C46, ​​C47, and C48 are grounded. In this embodiment, the voltage adjustment chip U7 is model ETA3406S2F. The voltage adjustment chip U7 can convert 3.3V power supply to 1.1V power supply to provide working power for the MCU functional module inside the dual-mode communication main control chip U10. Providing different working power supplies according to different functional circuits can reduce the power consumption of the device.

[0026] like Figure 6As shown, the broadband carrier signal transmitting circuit includes a broadband carrier signal chip U1, filter capacitor C3, filter capacitor C10, and resistor R1. The broadband carrier signal chip U1 is model THS6222 and has 24 pins. Pin 1 of the broadband carrier signal chip U1 is connected to pin 61 of the dual-mode communication main control chip U10 through filter capacitor C3. Pin 2 of the broadband carrier signal chip U1 is connected to pin 60 of the dual-mode communication main control chip U10 through filter capacitor C10. Pins 23 and 24 of the broadband carrier signal chip U1 are connected to pin 12 of the dual-mode communication main control chip U10 through resistor R1. Pins 12 and 21 of the broadband carrier signal chip U1 are connected to the power supply. In this embodiment, the broadband carrier signal chip U1 is model SPE6222. The broadband carrier communication modulation signal is generated by SPE8100, and after being amplified by ANA_TXON and ANA_TXOP, it is sent to the broadband carrier signal chip U1 and then emitted. The carrier communication signal can be received by the receiver on the line. The broadband carrier signal chip U1 is directly powered by a 12V power supply.

[0027] like Figure 7 As shown, the broadband carrier signal receiving circuit includes a carrier signal receiving coil AT1, resistors R28 and R32, capacitors C22 and C28, inductors L1 and L4, capacitors C21 and C27, a matching resistor R30, a bidirectional protection diode D1, and a bidirectional protection diode D2. One end of resistor R28 and one end of resistor R32 are connected to the carrier signal receiving coil AT1. The other end of resistor R28 is connected to one end of inductor L1 through capacitor C22. The other end of inductor L1 is connected to one end of capacitor C21, one end of bidirectional protection diode D1, and one end of matching resistor R30. The other end of capacitor C21 is connected to pin 65 of the dual-mode communication main control chip U10. The other end of resistor R32 is connected to one end of inductor L4 through capacitor C28. The other end of inductor L4 is connected to one end of capacitor C27, one end of bidirectional protection diode D1, and one end of matching resistor R30. The other end of capacitor C27 is connected to pin 66 of the dual-mode communication main control chip U10. In this embodiment, the signal is extracted by resistors R29 and R31, filtered to remove interference, and then coupled to the dual-mode communication main control chip U10 via capacitors C21 and C27 for signal demodulation. Matching resistor R30 is used for signal transmission matching, and bidirectional protection diodes D1 and D2 clamp the signal voltage, removing high-voltage pulse interference and protecting the chip's input pins.

[0028] As can be seen from the above, the present invention provides a dual-mode communication circuit of power broadband carrier and low-power wireless. By setting up mutually cooperating power supplies, a primary power supply voltage adjustment circuit, a secondary power supply voltage adjustment circuit, a dual-mode communication main control circuit, a broadband carrier signal transmitting circuit, a broadband carrier signal receiving circuit, and a low-power wireless signal transmitting and receiving circuit in the dual-mode communication circuit, the dual-mode communication main control circuit can control the broadband carrier signal transmitting circuit to transmit user power consumption data. It can also detect power outage events and, after a power outage event occurs, control the low-power wireless signal transmitting and receiving circuit to report power outage information and transmit user power consumption data. The addition of the low-power wireless signal transmitting and receiving circuit as a supplement enables power outage reporting via the low-power wireless signal transmitting and receiving circuit when the power line is disconnected due to a fault. Simultaneously, the dual-mode communication main control circuit controls the broadband carrier signal transmitting circuit, the broadband carrier signal receiving circuit, and the low-power wireless signal transmitting and receiving circuit respectively, which can reduce interference and communication anomalies on power lines in some complex distribution areas. This solves the problem of the shortcomings of existing single broadband carrier communication, which cannot effectively report power outages when the power line is disconnected due to a fault.

[0029] The specific embodiments described above are preferred embodiments of the present invention and are not intended to limit the specific scope of the present invention. The scope of the present invention includes, but is not limited to, these specific embodiments. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A dual-mode power broadband carrier and micro-power wireless communication circuit, characterized by: The power supply, the primary power voltage adjustment circuit, the secondary power voltage adjustment circuit, the dual-mode communication main control circuit, the wideband carrier signal transmission circuit, the wideband carrier signal receiving circuit and the micro-power wireless signal transmission and receiving circuit, the power supply is connected with the primary power voltage adjustment circuit, the wideband carrier signal transmission circuit, the primary power voltage adjustment circuit is connected with the secondary power voltage adjustment circuit, the dual-mode communication main control circuit, the secondary power voltage adjustment circuit is connected with the dual-mode communication main control circuit, the output of the wideband carrier signal receiving circuit is connected with the input of the dual-mode communication main control circuit, the output of the dual-mode communication main control circuit is connected with the input of the wideband carrier signal transmission circuit, the dual-mode communication main control circuit is connected with the micro-power wireless signal transmission and receiving circuit, the dual-mode communication main control circuit is equipped with the dual-mode communication main control chip U10 of SPE8100 type, the dual-mode communication main control chip U10 supports wideband carrier signal communication and micro-power wireless signal communication, the dual-mode communication main control circuit can control the wideband carrier signal transmission circuit to transmit user power data, and can detect power failure and control the micro-power wireless signal transmission and receiving circuit to report power failure information and transmit user power data after power failure.

2. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 1, wherein: The dual-mode communication main control circuit is equipped with the dual-mode communication main control chip U10, the dual-mode communication main control chip U10 is equipped with 69 pins, wherein the 7th, 10th and 14th pins of the dual-mode communication main control chip U10 are connected with the output of the primary power voltage adjustment circuit, the 9th and 11th pins of the dual-mode communication main control chip U10 are connected with the output of the secondary power voltage adjustment circuit, the 12th, 60th and 61st pins of the dual-mode communication main control chip U10 are connected with the input of the wideband carrier signal transmission circuit, the 65th and 66th pins of the dual-mode communication main control chip U10 are connected with the output of the wideband carrier signal receiving circuit, and the 46th, 23rd, 25th and 27th pins of the dual-mode communication main control chip U10 are connected with the micro-power wireless signal transmission and receiving circuit.

3. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 2, wherein: The dual-mode communication main control circuit is further provided with a communication serial port J3, a photodiode D5, a photodiode D3, a reset resistor R35, a reset capacitor C64, a reset capacitor C65, a resistor R37, a resistor R58 and a resistor R60, wherein the communication serial port J3 is connected with the 36th and 37th pins of the dual-mode communication main control chip U10, the positive electrode of the photodiode D5 is connected with the 2nd pin of the dual-mode communication main control chip U10, the positive electrode of the photodiode D3 is connected with the 15th pin of the dual-mode communication main control chip U10, one end of the reset resistor R35 is connected with one end of the reset capacitor C64, one end of the reset capacitor C65 and the 49th pin of the dual-mode communication main control chip U10, the other end of the reset resistor R35 is connected with the output end of the primary power voltage adjusting circuit, the other end of the reset capacitor C64 and the other end of the reset capacitor C65 are grounded, one end of the resistor R37 is connected with the output end of the primary power voltage adjusting circuit, the other end of the resistor R37 is connected with one end of the resistor R58, the other end of the resistor R58 is connected with one end of the resistor R60 and the 64th pin of the dual-mode communication main control chip U10, the other end of the resistor R60 is grounded.

4. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 3, wherein: The micro-power wireless signal transmitting and receiving circuit is provided with a micro-power wireless communication chip U11, a transistor Q4, a resistor R63, a capacitor C69, a spiral antenna ANT1 and a bidirectional protection diode D4, wherein the micro-power wireless communication chip U11 is provided with 6 pins, the 6th pin of the micro-power wireless communication chip U11 is connected with one end of the resistor R63 and the 46th pin of the dual-mode communication main control chip U10, the other end of the resistor R63 is connected with the base electrode of the transistor Q4, the 4th pin of the micro-power wireless communication chip U11 is connected with the collector electrode of the transistor Q4, the 5th pin of the micro-power wireless communication chip U11 is connected with one end of the capacitor C69, the other end of the capacitor C69 is connected with one end of the bidirectional protection diode D4 and the spiral antenna ANT1, the emitter electrode of the transistor Q4 and the other end of the bidirectional protection diode D4 are grounded.

5. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 4, wherein: The micro-power wireless signal transmitting and receiving circuit is further provided with a filter inductor L11, a filter capacitor C67, a filter capacitor C66, a filter inductor L16, a filter capacitor C73, a filter inductor L19, a filter capacitor C77 and a filter capacitor C78, wherein the first pin of the micro-power wireless communication chip U11 is connected with one end of the filter capacitor C77, the other end of the filter capacitor C77 is connected with one end of the filter capacitor C78, the other end of the filter capacitor C78 is connected with one end of the filter inductor L19 and the 27th pin of the dual-mode communication main control chip U10, the other end of the filter inductor L19 is grounded, the third pin of the micro-power wireless communication chip U11 is connected with one end of the filter capacitor C67, the other end of the filter capacitor C67 is connected with one end of the filter inductor L11, the other end of the filter inductor L11 is connected with one end of the filter capacitor C66, the other end of the filter capacitor C66 is connected with one end of the filter inductor L16, the other end of the filter inductor L16 is connected with one end of the filter capacitor C73, and the other end of the filter capacitor C73 is connected with the 25th pin of the dual-mode communication main control chip U10.

6. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 5, wherein: The primary power voltage adjusting circuit is provided with a power voltage adjusting chip U2, a field effect transistor Q3, a diode D3, a diode D7, resistors R33, R34, R35 and R37, wherein the power voltage adjusting chip U2 is provided with 10 pins, the third pin of the power voltage adjusting chip U2 is connected with the negative electrode of the diode D7, the positive electrode of the diode D7 is connected with the negative electrode of the diode D3, the positive electrode of the diode D3 is connected with one end of the resistor R35 and one end of the resistor R37, the ninth pin of the power voltage adjusting chip U2 is connected with the secondary power voltage adjusting circuit and the 7th, 10th and 14th pins of the dual-mode communication main control chip U10 for power supply, the drain electrode of the field effect transistor Q3 is connected with one end of the resistor R34 and one end of the resistor R33, the other end of the resistor R34 is connected with a power supply, the gate electrode of the field effect transistor Q3 is connected with the other end of the resistor R35, and the source electrode of the field effect transistor Q3 and the other end of the resistor R37 are grounded.

7. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 6, wherein: The secondary power voltage adjusting circuit is provided with voltage adjusting chip U7, filter inductor L9, filter inductor L10, filter capacitor C47, filter capacitor C48 and filter capacitor C46, wherein the voltage adjusting chip U7 is provided with 5 pins, the 4th pin of the voltage adjusting chip U7 is connected with the 9th pin of the power voltage adjusting chip U2 and one end of the filter capacitor C46, the 3rd pin of the voltage adjusting chip U7 is connected with one end of the filter inductor L9, the other end of the filter inductor L9 is connected with one end of the filter capacitor C47, one end of the filter capacitor C48 and one end of the filter inductor L10, the other end of the filter inductor L10 is connected with the 9th and 11th pins of the dual-mode communication main control chip U10, the other end of the filter capacitor C46, the other end of the filter capacitor C47 and the other end of the filter capacitor C48 are grounded.

8. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 7, wherein: The wideband carrier signal sending circuit is provided with wideband carrier signal chip U1, filter capacitor C3, filter capacitor C10 and resistor R1, wherein the wideband carrier signal chip U1 is provided with 24 pins, the 1st pin of the wideband carrier signal chip U1 is connected with the 61st pin of the dual-mode communication main control chip U10 through the filter capacitor C3, the 2nd pin of the wideband carrier signal chip U1 is connected with the 60th pin of the dual-mode communication main control chip U10 through the filter capacitor C10, the 23rd and 24th pins of the wideband carrier signal chip U1 are connected with the 12th pin of the dual-mode communication main control chip U10 through the resistor R1, the 12th and 21st pins of the wideband carrier signal chip U1 are connected with the power supply.

9. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 8, wherein: The wideband carrier signal receiving circuit is provided with carrier signal receiving coil AT1, resistor R28, resistor R32, capacitor C22, capacitor C28, inductor L1, inductor L4, capacitor C21, capacitor C27, matching resistor R30, bidirectional protection diode D1 and bidirectional protection diode D2, wherein one end of the resistor R28 and one end of the resistor R32 are connected with the carrier signal receiving coil AT1, the other end of the resistor R28 is connected with one end of the inductor L1 through the capacitor C22, the other end of the inductor L1 is connected with one end of the capacitor C21, one end of the bidirectional protection diode D1 and one end of the matching resistor R30, the other end of the capacitor C21 is connected with the 65th pin of the dual-mode communication main control chip U10, the other end of the resistor R32 is connected with one end of the inductor L4 through the capacitor C28, the other end of the inductor L4 is connected with one end of the capacitor C27, one end of the bidirectional protection diode D1 and one end of the matching resistor R30, the other end of the capacitor C27 is connected with the 66th pin of the dual-mode communication main control chip U10.

10. The dual-mode power broadband carrier and micro-power wireless communication circuit of claim 9, wherein: The model of the wideband carrier signal chip U1 is THS6222, the model of the micro-power wireless communication chip U11 is PE4259 / UPG2179TB-E4A, the model of the power voltage adjustment chip U2 is ETA-9098, the model of the voltage adjustment chip U7 is ETA3406S2F, and the voltage of the power supply is 12V.

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