LoRa gateway control circuit

Abstract

The utility model discloses a LoRa gateway control circuit, which relates to the technical field of control and comprises a power supply control circuit used for controlling a circuit power supply. The MCU control circuit is used for starting and stopping the whole circuit; a LoRa transmitting end control circuit, wherein the LoRa transmitting end control circuit is used for controlling the start and stop of the LoRa transmitting end; a LoRa receiving end control circuit, wherein the LoRa receiving end control circuit is used for controlling the start and stop of the LoRa receiving end; the protocol conversion control circuit is used for carrying out communication protocol conversion; the 4G signal circuit is used for receiving a 4G signal; the 4G power supply circuit is used for providing a working power supply for the 4G signal circuit; according to the LoRa gateway control circuit, by adopting the LoRa technology, the problem of difficulty in field wiring can be solved, the construction is convenient, and the construction cost is reduced; due to the low-power-consumption setting, the capacity requirements for the battery and the solar energy are reduced, and the operation and maintenance cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to control technology, and particularly relates to a LoRa gateway control circuit. Background Art

[0002] The Internet of Things (IoT) is the "Internet of all things connected", which is an extension and expansion of the Internet. It is a huge network formed by combining various information sensing devices with the network, realizing the interconnection and intercommunication of people, machines, and things at any time and any place. LoRa (Long Range) is a long-distance wireless transmission solution based on spread spectrum technology adopted and promoted by Semtech Corporation in the United States. The LoRa network mainly consists of terminals (which can be built-in with LoRa modules), gateways (or base stations), Servers, and the cloud, and application data can be transmitted bidirectionally.

[0003] Currently, the main design of LoRa gateway products lies in their compatibility, thus neglecting the stability of long-distance communication and production costs. As a result, the designed products cannot simultaneously possess long-distance communication, good anti-interference ability, and low costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a LoRa gateway control circuit to solve the above-mentioned deficiencies in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A LoRa gateway control circuit, comprising:

[0006] A power control circuit for controlling the circuit power supply;

[0007] An MCU control circuit for starting and stopping the overall circuit;

[0008] A LoRa transmitter control circuit for controlling the start and stop of the LoRa transmitter;

[0009] A LoRa receiver control circuit for controlling the start and stop of the LoRa receiver;

[0010] A protocol conversion control circuit for performing communication protocol conversion;

[0011] A 4G signal circuit for receiving 4G signals;

[0012] A 4G power circuit for providing working power for the 4G signal circuit;

[0013] Level conversion circuit, which is used to achieve level conversion.

[0014] Further, the MCU control circuit includes a main control chip with the model number HC32F460KETA-LQFP64. The main control chip is connected to a pin interface with the model number DS1037-09FNAKT74-0CC. The main control chip is connected to a four-pin socket P3. The 1st pin of the pin P3 is connected to the 3.3V power supply. The 2nd pin of the pin P3 is connected to the SWDIO pin of the main control chip. The 3rd pin of the pin P3 is connected to the SWCLK pin. The 4th pin of the pin P3 is grounded.

[0015] Further, the LoRa transmitter control circuit includes a LoRa chip U6 with the model number LSD4RFC-2L722N10. The 1st pin of the LoRa chip U6 is connected to the LORA_TX_SW_CTL1 pin of the main control chip. The 2nd pin of the LoRa chip U6 is connected to the 8th pin of the LoRa chip U6. The 3rd pin of the LoRa chip U6 is connected to the LORA_TX_BUSY pin of the main control chip. The 4th pin of the LoRa chip U6 is connected to the LORA_TX_DIO1 pin of the main control chip. The 5th pin of the LoRa chip U6 is grounded. The 6th pin of the LoRa chip U6 is connected to the LORA_TX_3V3 pin of the main control chip. The 10th pin of the LoRa chip U6 is connected to the LORA_TX_RST pin of the main control chip. The 11th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_MISO pin of the main control chip. The 12th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_MOSI pin of the main control chip. The 13th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_SCK pin of the main control chip. The 14th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_CS pin of the main control chip. The 15th pin of the LoRa chip U6 is grounded. The 16th pin of the LoRa chip U6 is connected to the RF_TX_ANT pin of the main control chip.

[0016] Further, the LoRa receiver control circuit includes a LoRa chip U8 of model LSD4RFC-2L722N10. The 1st pin of the LoRa chip U8 is connected to the LORA_RX_SW_CTL1 pin of the main control chip. The 2nd pin of the LoRa chip U8 is connected to the 8th pin of the LoRa chip U8. The 3rd pin of the LoRa chip U8 is connected to the LORA_RX_BUSY pin of the main control chip. The 4th pin of the LoRa chip U8 is connected to the LORA_RX_DIO1 pin of the main control chip. The 5th pin of the LoRa chip U8 is grounded. The 6th pin of the LoRa chip U8 is connected to the LORA_RX_3V3 pin of the main control chip. The 10th pin of the LoRa chip U8 is connected to the LORA_RX_RST pin of the main control chip. The 11th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_MISO pin of the main control chip. The 12th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_MOSI pin of the main control chip. The 13th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_SCK pin of the main control chip. The 14th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_CS pin of the main control chip. The 15th pin of the LoRa chip U8 is grounded. The 16th pin of the LoRa chip U8 is connected to the RF_RX_ANR pin of the main control chip.

[0017] Further, the protocol conversion control circuit includes a microcontroller chip U7 of model UT3232G-S16-R. The 7th pin of the microcontroller chip U7 is connected to the 232_TX pin of the main control chip. The 8th pin of the microcontroller chip U7 is connected to the 232_RX pin of the main control chip. The 9th pin of the microcontroller chip U7 is connected to the RS_232_RX pin of the main control chip. The 10th pin of the microcontroller chip U7 is connected to the RS_232_TX pin of the main control chip.

[0018] Further, the level conversion circuit includes a triode. The e-pole of the triode is connected to the MCU control circuit. The b-pole of the triode is connected to the 4G power supply circuit through a resistor, and an inductor is connected across the two ends of the resistor. The c-pole of the triode is connected to the 4G signal circuit, and the c-pole of the triode is connected to the 4G power supply circuit through a resistor.

[0019] Compared with the prior art, a LoRa gateway control circuit provided by the present utility model. The present utility model adopts LoRa technology, which can solve the problem of difficult on-site wiring, facilitate construction, and reduce construction costs. And the low-power consumption setting reduces the capacity requirements for batteries and solar energy, greatly reducing the operation and maintenance costs. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments described in the present utility model. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the power circuit structure provided by the embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of the MCU control circuit structure provided by the embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the first part of the circuit structure provided by the embodiment of the present utility model;

[0024] Figure 4 Schematic diagram of the second part of the circuit structure provided by the embodiment of the present utility model. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the accompanying drawings.

[0026] Please refer to Figures 1-4 , a LoRa gateway control circuit, including:

[0027] A power control circuit, which is used to control the circuit power supply;

[0028] An MCU control circuit, which is used to start and stop the overall circuit;

[0029] A LoRa transmitter control circuit, which is used to control the start and stop of the LoRa transmitter;

[0030] A LoRa receiver control circuit, which is used to control the start and stop of the LoRa receiver;

[0031] A protocol conversion control circuit, which is used to perform communication protocol conversion;

[0032] A 4G signal circuit, which is used to receive 4G signals;

[0033] A 4G power circuit, which is used to provide working power for the 4G signal circuit;

[0034] A level conversion circuit, which is used to implement level conversion.

[0035] The MCU control circuit includes a main control chip with the model number HC32F460KETA-LQFP64. The main control chip is connected to a pin interface with the model number DS1037-09FNAKT74-0CC. The main control chip is connected to a four-pin socket P3. The 1st pin of the pin P3 is connected to the 3.3V power supply. The 2nd pin of the pin P3 is connected to the SWDIO pin of the main control chip. The 3rd pin of the pin P3 is connected to the SWCLK pin. The 4th pin of the pin P3 is grounded.

[0036] The LoRa transmitter control circuit includes a LoRa chip U6 with the model number LSD4RFC-2L722N10. The 1st pin of the LoRa chip U6 is connected to the LORA_TX_SW_CTL1 pin of the main control chip. The 2nd pin of the LoRa chip U6 is connected to the 8th pin of the LoRa chip U6. The 3rd pin of the LoRa chip U6 is connected to the LORA_TX_BUSY pin of the main control chip. The 4th pin of the LoRa chip U6 is connected to the LORA_TX_DIO1 pin of the main control chip. The 5th pin of the LoRa chip U6 is grounded. The 6th pin of the LoRa chip U6 is connected to the LORA_TX_3V3 pin of the main control chip. The 10th pin of the LoRa chip U6 is connected to the LORA_TX_RST pin of the main control chip. The 11th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_MISO pin of the main control chip. The 12th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_MOSI pin of the main control chip. The 13th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_SCK pin of the main control chip. The 14th pin of the LoRa chip U6 is connected to the LORA_TX_SPI_CS pin of the main control chip. The 15th pin of the LoRa chip U6 is grounded. The 16th pin of the LoRa chip U6 is connected to the RF_TX_ANT pin of the main control chip.

[0037] The LoRa receiver control circuit includes a LoRa chip U8 with the model number LSD4RFC-2L722N10. The 1st pin of the LoRa chip U8 is connected to the LORA_RX_SW_CTL1 pin of the main control chip. The 2nd pin of the LoRa chip U8 is connected to the 8th pin of the LoRa chip U8. The 3rd pin of the LoRa chip U8 is connected to the LORA_RX_BUSY pin of the main control chip. The 4th pin of the LoRa chip U8 is connected to the LORA_RX_DIO1 pin of the main control chip. The 5th pin of the LoRa chip U8 is grounded. The 6th pin of the LoRa chip U8 is connected to the LORA_RX_3V3 pin of the main control chip. The 10th pin of the LoRa chip U8 is connected to the LORA_RX_RST pin of the main control chip. The 11th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_MISO pin of the main control chip. The 12th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_MOSI pin of the main control chip. The 13th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_SCK pin of the main control chip. The 14th pin of the LoRa chip U8 is connected to the LORA_RX_SPI_CS pin of the main control chip. The 15th pin of the LoRa chip U8 is grounded. The 16th pin of the LoRa chip U8 is connected to the RF_RX_ANR pin of the main control chip.

[0038] The protocol conversion control circuit includes a microcontroller chip U7 with the model number UT3232G-S16-R. The 7th pin of the microcontroller chip U7 is connected to the 232_TX pin of the main control chip. The 8th pin of the microcontroller chip U7 is connected to the 232_RX pin of the main control chip. The 9th pin of the microcontroller chip U7 is connected to the RS_232_RX pin of the main control chip. The 10th pin of the microcontroller chip U7 is connected to the RS_232_TX pin of the main control chip.

[0039] The level conversion circuit includes a triode. The e-pole of the triode is connected to the MCU control circuit. The b-pole of the triode is connected to the 4G power supply circuit through a resistor, and an inductor is connected across the resistor. The c-pole of the triode is connected to the 4G signal circuit, and the c-pole of the triode is also connected to the 4G power supply circuit through a resistor.

[0040] Only some exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A LoRa gateway control circuit, characterized in that: include: A power control circuit, the power control circuit is used to control the circuit power supply; MCU control circuit, the MCU control circuit is used to start and stop the entire circuit; A LoRa transmitter control circuit, wherein the LoRa transmitter control circuit is used to control the start and stop of the LoRa transmitter; A LoRa receiving end control circuit, wherein the LoRa receiving end control circuit is used to control the start and stop of the LoRa receiving end; A protocol conversion control circuit, wherein the protocol conversion control circuit is used to perform communication protocol conversion; A 4G signal circuit, wherein the 4G signal circuit is used to receive a 4G signal; A 4G power supply circuit, wherein the 4G power supply circuit is used to provide working power for the 4G signal circuit; A level conversion circuit is used to realize level conversion.

2. A LoRa gateway control circuit according to claim 1, characterized in that, The MCU control circuit includes a main control chip with model HC32F460KETA-LQFP64, the main control chip is connected to a pin interface with model DS1037-09FNAKT74-0CC, the main control chip is connected to a four-pin socket P3, pin 1 of the pin P3 is connected to a 3.3 power supply, pin 2 of the pin P3 is connected to a SWDIO pin of the main control chip, pin 3 of the pin P3 is connected to a SWCLK pin, and pin 4 of the pin P3 is grounded.

3. A LoRa gateway control circuit according to claim 1, characterized in that, The LoRa transmitter control circuit includes a LoRa chip U6 of model LSD4RFC-2L722N10, pin 1 of the LoRa chip U6 is connected to the LORA_TX_SW_CTL1 pin of the main control chip, pin 2 of the LoRa chip U6 is connected to pin 8 of the LoRa chip U6, pin 3 of the LoRa chip U6 is connected to the LORA_TX_BUSY pin of the main control chip, pin 4 of the LoRa chip U6 is connected to the LORA_TX_DIO1 pin of the main control chip, pin 5 of the LoRa chip U6 is grounded, pin 6 of the LoRa chip U6 is connected to the LORA_TX_3V3 pin of the main control chip, and pin 7 of the LoRa chip U6 is connected to the LORA_TX_4V3 pin of the main control chip. Pin 10 of the LoRa chip U6 is connected to the LORA_TX_RST pin of the main control chip, pin 11 of the LoRa chip U6 is connected to the LORA_TX_SPI_MISO pin of the main control chip, pin 12 of the LoRa chip U6 is connected to the LORA_TX_SPI_MOSI pin of the main control chip, pin 13 of the LoRa chip U6 is connected to the LORA_TX_SPI_SCK pin of the main control chip, pin 14 of the LoRa chip U6 is connected to the LORA_TX_SPI_CS pin of the main control chip, pin 15 of the LoRa chip U6 is grounded, and pin 16 of the LoRa chip U6 is connected to the RF_TX_ANT pin of the main control chip.

4. A LoRa gateway control circuit according to claim 1, characterized in that, The LoRa receiving end control circuit includes a LoRa chip U8 of model LSD4RFC-2L722N10, wherein pin 1 of the LoRa chip U8 is connected to the LORA_RX_SW_CTL1 pin of the main control chip, pin 2 of the LoRa chip U8 is connected to pin 8 of the LoRa chip U8, pin 3 of the LoRa chip U8 is connected to the LORA_RX_BUSY pin of the main control chip, pin 4 of the LoRa chip U8 is connected to the LORA_RX_DIO1 pin of the main control chip, pin 5 of the LoRa chip U8 is grounded, pin 6 of the LoRa chip U8 is connected to the LORA_RX_3V3 pin of the main control chip, and pin 7 of the LoRa chip U8 is connected to the LORA_RX_S_S_3V3 pin of the main control chip. Pin 10 of the LoRa chip U8 is connected to the LORA_RX_RST pin of the main control chip, pin 11 of the LoRa chip U8 is connected to the LORA_RX_SPI_MISO pin of the main control chip, pin 12 of the LoRa chip U8 is connected to the LORA_RX_SPI_MOSI pin of the main control chip, pin 13 of the LoRa chip U8 is connected to the LORA_RX_SPI_SCK pin of the main control chip, pin 14 of the LoRa chip U8 is connected to the LORA_RX_SPI_CS pin of the main control chip, pin 15 of the LoRa chip U8 is grounded, and pin 16 of the LoRa chip U8 is connected to the RF_RX_ANR pin of the main control chip.

5. A LoRa gateway control circuit according to claim 1, characterized in that, The protocol conversion control circuit includes a microcontrol chip U7 of model UT3232G-S16-R, pin 7 of the microcontrol chip U7 is connected to the 232_TX pin of the main control chip, pin 8 of the microcontrol chip U7 is connected to the 232_RX pin of the main control chip, pin 9 of the microcontrol chip U7 is connected to the RS_232_RX pin of the main control chip, and pin 10 of the microcontrol chip U7 is connected to the RS_232_TX pin of the main control chip.

6. A LoRa gateway control circuit according to claim 1, characterized in that, The level conversion circuit includes a transistor, the e-pole of the transistor is connected to the MCU control circuit, the b-pole of the transistor is connected to the 4G power supply circuit through a resistor, an inductor is connected at both ends of the resistor, the c-pole of the transistor is connected to the 4G signal circuit, and the c-pole of the transistor is connected to the 4G power supply circuit through a resistor.

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