CN215773109U - Full duplex communication module system based on LoRaWAN - Google Patents
Full duplex communication module system based on LoRaWAN Download PDFInfo
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- CN215773109U CN215773109U CN202120888560.0U CN202120888560U CN215773109U CN 215773109 U CN215773109 U CN 215773109U CN 202120888560 U CN202120888560 U CN 202120888560U CN 215773109 U CN215773109 U CN 215773109U
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Abstract
The utility model relates to a full duplex communication module system based on LoRaWAN, comprising: the LoRa baseband chip is used for information processing; the radio frequency transmitting unit is connected to the transmitting end of the LoRa baseband chip and used for transmitting wireless information; the radio frequency receiving unit is connected to the receiving end of the LoRa baseband chip and used for receiving wireless information; the duplexer is connected between the radio frequency transmitting unit and the radio frequency receiving unit and is used for separating the wireless signals transmitted by the radio frequency transmitting unit from the wireless signals received by the radio frequency receiving unit; the MCU is connected to the LoRa baseband chip and used for processing data; the power supply, the power supply is to the power supply of loRa baseband chip, and the power is connected to through switching circuit the enable terminal of radio frequency emission unit, switching circuit passes through it switches on or cuts off to loRa baseband chip control.
Description
Technical Field
The utility model relates to the field of communication module systems, in particular to a full-duplex communication module system based on LoRaWAN.
Background
LoRaWAN is a wireless communication protocol made by Semtech, the Internet of things industry is widely applied, and the LoRa modulation signal modules are interconnected to form a network, so that the LoRaWAN has more and more extensive application in smart cities, security, agriculture, industry and other directions by virtue of strong communication transmission capacity and communication capacity; most of the existing LoRa gateway modules are time division duplex communication in the market, more channels for receiving and sending are 8RX +1TX, and the time division duplex communication has more defects compared with frequency division duplex, for example, the proportion of uplink and downlink channels is unreasonable, uplink data transmission loss is caused by downlink channel congestion, network capacity is seriously influenced, more complex network planning and optimization technologies are needed, and the like. Simultaneously, current loRa gateway module is in the running state constantly, and the power amplifier that it contains consumes a large amount of electric energy, causes loRa gateway module power consumptive height, standby time short scheduling problem.
The utility model aims to design a full-duplex communication module system based on LoRaWAN aiming at the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, the present invention provides a full duplex communication module system based on LoRaWAN, which can effectively solve the problems in the prior art.
The technical scheme of the utility model is as follows:
a full duplex communication module system based on LoRaWAN includes:
the LoRa baseband chip is used for information processing;
the radio frequency transmitting unit is connected to the transmitting end of the LoRa baseband chip and used for transmitting wireless information;
the radio frequency receiving unit is connected to the receiving end of the LoRa baseband chip and used for receiving wireless information;
the duplexer is connected between the radio frequency transmitting unit and the radio frequency receiving unit and is used for separating the wireless signals transmitted by the radio frequency transmitting unit from the wireless signals received by the radio frequency receiving unit;
the MCU is connected to the LoRa baseband chip and used for processing data;
the power supply, the power supply is to the power supply of loRa baseband chip, and the power is connected to through switching circuit the enable terminal of radio frequency emission unit, switching circuit passes through it switches on or cuts off to loRa baseband chip control.
The radio frequency transmitting unit comprises the following components which are connected in sequence according to the signal trend: the radio frequency modulation transmitting chip comprises a radio frequency modulation transmitting chip, a first acoustic surface filter, a power amplifier and a low-pass filter, wherein the input end of the radio frequency modulation transmitting chip is connected to the output end of the LoRa baseband chip, the radio frequency modulation transmitting chip is used for receiving and monitoring signals and modulating signal transmission simultaneously, the power amplifier is connected to the output end of the LoRa baseband chip, and the power amplifier is used for amplifying signal power.
The power supply is connected to an enable terminal of the power amplifier through a switching circuit.
The system further comprises a radio frequency modulation chip, wherein the radio frequency modulation chip is connected with the MCU, the radio frequency modulation transmitting chip and the radio frequency modulation receiving chip and is used for LBT channel interception scanning and feedback to the MCU.
The radio frequency receiving unit comprises the following components which are connected in sequence according to the signal trend: the device comprises a second acoustic surface filter, a low noise amplifier, a third acoustic surface filter and a radio frequency modulation receiving chip.
The utility model has the advantages that:
when the wireless power amplifier sends signals, the signals are received and monitored through the radio frequency modulation transmitting chip, the signals are modulated at the same time, then the signals pass through the first acoustic meter filter and then reach the radio frequency power amplifier for power amplification, the power supply end of the power amplifier is connected to a power supply through the switching circuit, the switching circuit is controlled to be switched on or switched off by the LoRa baseband chip, therefore, the power amplifier can be accurately controlled to be started only in a required time period, the energy consumption of the power amplifier is reduced, and finally, the signals are converted into wireless signals through the transmitting channel of the duplexer and are transmitted.
When the utility model transmits signals, wireless signals are converted into electric signals through a receiving channel of the duplexer, and the electric signals are demodulated through a second sound meter filter, a low noise amplifier, a third sound meter filter and a radio frequency modulation receiving chip and are transmitted to a LoRa baseband chip for processing.
The utility model is also provided with a radio frequency modulation chip which is connected with the MCU, the radio frequency modulation transmitting chip and the radio frequency modulation receiving chip and is used for LBT channel interception scanning feedback to the MCU, so that the channel can be effectively intercepted, and the MCU is helped to distribute reasonable channels.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2-7 are circuit diagrams for implementing the present invention.
Detailed Description
To facilitate understanding of those skilled in the art, the structure of the present invention will now be described in further detail by way of examples in conjunction with the accompanying drawings:
example one
Referring to fig. 1, a full duplex communication module system based on LoRaWAN includes:
a LoRa baseband chip used for information processing, and referring to fig. 2, in this embodiment, the LoRa baseband chip is composed of U1 and its peripheral circuit, specifically, the LoRa baseband chip of this embodiment adopts an SX1302 chip;
the radio frequency transmitting unit is connected to the transmitting end of the LoRa baseband chip and used for transmitting wireless information, and the radio frequency transmitting unit comprises the following components which are connected in sequence according to the trend of signals: the radio frequency modulation transmitting chip is connected to the output end of the LoRa baseband chip, the radio frequency modulation transmitting chip is used for receiving and monitoring signals and modulating signal transmission simultaneously, the power amplifier is connected to the output end of the LoRa baseband chip, the power amplifier is used for amplifying signal power, the power supply is connected to the enabling end of the power amplifier through a switch circuit, referring to the figure 3, the radio frequency modulation transmitting chip is composed of U8 and peripheral circuits thereof, referring to the figure 4, the first acoustic meter filter is composed of U16 and peripheral circuits thereof, the power amplifier is composed of U15 and peripheral circuits thereof, and the low-pass filter is composed of U14 and peripheral circuits thereof.
The radio frequency receiving unit is connected to the receiving end of the LoRa baseband chip and used for receiving wireless information, and the radio frequency receiving unit comprises the following components which are connected in sequence according to the trend of signals: referring to fig. 5, the rf modulation receiving chip is composed of U9 and its peripheral circuits, referring to fig. 6, the second acoustic surface filter is composed of U11 and its peripheral circuits, the low noise amplifier is composed of U10 and its peripheral circuits, and the third acoustic surface filter is composed of U13 and its peripheral circuits;
the duplexer is connected between the radio frequency transmitting unit and the radio frequency receiving unit and is used for separating the wireless signals transmitted by the radio frequency transmitting unit from the wireless signals received by the radio frequency receiving unit;
the MCU is connected to the LoRa baseband chip and used for processing data;
the power supply supplies power to the LoRa baseband chip, is connected to an enabling end of the radio frequency transmitting unit through a switching circuit, and controls the switching circuit to be switched on or switched off through the LoRa baseband chip;
and the radio frequency modulation chip is connected with the MCU, the radio frequency modulation transmitting chip and the radio frequency modulation receiving chip and is used for LBT channel interception scanning and feedback to the MCU, and referring to fig. 7, the radio frequency modulation chip consists of U12 and peripheral circuits thereof.
During the sending signal, the signal is received and is monitored through radio frequency modulation transmitting chip, the modulating signal simultaneously, then, the signal carries out power amplification to radio frequency power amplifier behind the first phonometer wave filter, power amplifier's power end passes through switch circuit and is connected to the power, switch circuit is controlled its conduction or disconnection by loRa baseband chip, thereby can control power amplifier accurately and only start in the required time quantum, reduce power amplifier energy consumption, finally, the signal passes through the transmission channel of duplexer and converts the radio signal into and launches.
When the signal is transmitted, the wireless signal is converted into an electric signal through a receiving channel of the duplexer, and the electric signal is demodulated through the second acoustic surface filter, the low-noise amplifier, the third acoustic surface filter and the radio frequency modulation receiving chip and is transmitted to the LoRa baseband chip for processing.
The embodiment is further provided with a radio frequency modulation chip, wherein the radio frequency modulation chip is connected with the MCU, the radio frequency modulation transmitting chip and the radio frequency modulation receiving chip and used for LBT channel interception scanning and feedback to the MCU, so that a channel can be effectively intercepted and the MCU is helped to distribute reasonable channels.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (5)
1. The utility model provides a full duplex communication module system based on LoRaWAN which characterized in that: comprises the following steps:
the LoRa baseband chip is used for information processing;
the radio frequency transmitting unit is connected to the transmitting end of the LoRa baseband chip and used for transmitting wireless information;
the radio frequency receiving unit is connected to the receiving end of the LoRa baseband chip and used for receiving wireless information;
the duplexer is connected between the radio frequency transmitting unit and the radio frequency receiving unit and is used for separating the wireless signals transmitted by the radio frequency transmitting unit from the wireless signals received by the radio frequency receiving unit;
the MCU is connected to the LoRa baseband chip and used for processing data;
the power supply, the power supply is to the power supply of loRa baseband chip, and the power is connected to through switching circuit the enable terminal of radio frequency emission unit, switching circuit passes through it switches on or cuts off to loRa baseband chip control.
2. The LoRaWAN-based full-duplex communication module system of claim 1, wherein: the radio frequency transmitting unit comprises the following components which are connected in sequence according to the signal trend: the radio frequency modulation transmitting chip comprises a radio frequency modulation transmitting chip, a first acoustic surface filter, a power amplifier and a low-pass filter, wherein the input end of the radio frequency modulation transmitting chip is connected to the output end of the LoRa baseband chip, the radio frequency modulation transmitting chip is used for receiving and monitoring signals and modulating signal transmission simultaneously, the power amplifier is connected to the output end of the LoRa baseband chip, and the power amplifier is used for amplifying signal power.
3. The LoRaWAN-based full-duplex communication module system of claim 2, wherein: the power supply is connected to an enable terminal of the power amplifier through a switching circuit.
4. The LoRaWAN-based full-duplex communication module system of claim 2, wherein: the system further comprises a radio frequency modulation chip, wherein the radio frequency modulation chip is connected with the MCU, the radio frequency modulation transmitting chip and the radio frequency modulation receiving chip and is used for LBT channel interception scanning and feedback to the MCU.
5. The LoRaWAN-based full-duplex communication module system of claim 1, wherein: the radio frequency receiving unit comprises the following components which are connected in sequence according to the signal trend: the device comprises a second acoustic surface filter, a low noise amplifier, a third acoustic surface filter and a radio frequency modulation receiving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120888560.0U CN215773109U (en) | 2021-04-27 | 2021-04-27 | Full duplex communication module system based on LoRaWAN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120888560.0U CN215773109U (en) | 2021-04-27 | 2021-04-27 | Full duplex communication module system based on LoRaWAN |
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| Publication Number | Publication Date |
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| CN215773109U true CN215773109U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120888560.0U Active CN215773109U (en) | 2021-04-27 | 2021-04-27 | Full duplex communication module system based on LoRaWAN |
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- 2021-04-27 CN CN202120888560.0U patent/CN215773109U/en active Active
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