Gateway device integrating Bluetooth and LoRaWAN wireless communication technology

Abstract

The utility model discloses a gateway device integrating Bluetooth and LoRaWAN wireless communication technologies. The gateway device comprises a power supply circuit, a master control module, a LoRaWAN module, a 2.4 G low-power-consumption Bluetooth module and a cloud server. According to the utility model, Bluetooth and LoRaWAN wireless communication technologies are integrated into an integrated gateway, so that short-distance large-concurrency Bluetooth data can be received, long-distance small-concurrency LoRa data can also be received, and real-time terminal data receiving at different distances can be realized without distinguishing whether a terminal is a Bluetooth device or a LoRa device.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wireless communication gateway technical field, concretely relates to a kind of integrated bluetooth and LoRaWAN wireless communication technology gateway device. BACKGROUND

[0002] The conventional type communication gateway has the functions of receiving large concurrent data and scanning data at a distance of hundreds of meters, and has the function of Bluetooth communication gateway device. There are also communication gateway devices with LoRaWAN function that receive small concurrent data and scan data at a distance of kilometers. However, for terminal applications that require both short-range (Bluetooth devices) and long-range (LoRa devices), two types of communication gateways need to be installed to build a communication system. Not only is it difficult to deploy, but the overall cost is also high. INVENTION CONTENT

[0003] Therefore, the main purpose of the utility model is to provide a kind of integrated bluetooth and LoRaWAN wireless communication technology gateway device.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] The utility model embodiment one provides a kind of integrated bluetooth and LoRaWAN wireless communication technology gateway device, including power supply circuit, main control module, LoRaWAN module, 2.4G low-power Bluetooth module, cloud server;

[0006] The power supply circuit is used to reduce 12V power supply to 3.3V constant voltage, and supply the main control module, 2.4G low-power Bluetooth module and LoRaWAN module;

[0007] The main control module is used to receive the signal output by the LoRaWAN module and 2.4G low-power Bluetooth module and process data;

[0008] The LoRaWAN module is in communication connection with the main control module, for receiving LoRa scanning data, and sending LoRa scanning data to the main control module through SPI communication interface;

[0009] The 2.4G low-power Bluetooth module is in communication connection with the main control module, for receiving large concurrent Bluetooth scanning data outside hundreds of meters, and sending Bluetooth scanning data to the main control module through USB communication interface;

[0010] The cloud server is used to receive the LoRa scanning data and Bluetooth scanning data uploaded by the main control module through 2.4G WI FI or Ethernet.

[0011] In the scheme, the power supply circuit includes a 12V power supply, a step-down chip, a fifty-sixth capacitor, a fifty-eighth capacitor, a fifty-third capacitor, a forty-seventh capacitor, a sixty-first capacitor, a sixty-fifth capacitor, a sixtieth capacitor, a seventy-fifth resistor, a seventy-eighth resistor, an eighty-fifth resistor, an eighty-seventh resistor, a fourth inductor, an output end of the 12V power supply is connected with a first end of the fifty-sixth capacitor, a first end of the fifty-eighth capacitor, a VIN end of the step-down chip and a first end of the seventy-fifth resistor respectively, a second end of the seventy-fifth resistor is connected with a first end of the seventy-eighth resistor and an EN end of the step-down chip respectively, a BOOT end of the step-down chip is connected with a SW end of the step-down chip and a first end of the fourth inductor after connecting with the fifty-third capacitor in series, a second end of the fourth inductor is connected with a first end of the forty-seventh capacitor, a first end of the sixty-first capacitor, a first end of the sixty-fifth capacitor, a first end of the eighty-fifth resistor and a first end of the sixtieth capacitor respectively, a second end of the sixtieth capacitor is connected with a second end of the eighty-fifth resistor and a first end of the eighty-seventh resistor and a FB end of the step-down chip respectively, a second end of the eighty-seventh resistor is connected with a second end of the seventy-eighth resistor, a second end of the sixty-fifth capacitor and a second end of the sixty-first capacitor respectively and then grounded, and a second end of the forty-seventh capacitor is grounded.

[0012] In the scheme, the 2.4G low-power Bluetooth module includes a Bluetooth chip and an antenna circuit, the antenna circuit includes an antenna seat, an antenna, a first resistor, an eighth inductor, a thirty-second capacitor, a thirty-third capacitor, a band-pass filter, a seventh inductor, a thirtieth capacitor, a thirty-first capacitor, a front-end control chip, a third inductor, a thirteenth capacitor and a fourteenth capacitor, a first end of the third inductor is connected with an ANT end of the Bluetooth chip and a first end of the thirteenth capacitor respectively, a second end of the third inductor is connected with a first end of the fourteenth capacitor and a TXRX end of the front-end control chip respectively, a second end of the thirteenth capacitor and a second end of the fourteenth capacitor are grounded, an ANT end of the front-end control chip is connected with a first end of the thirtieth capacitor and a first end of the seventh inductor respectively, a second end of the seventh inductor is connected with a first end of the thirty-first capacitor and an Input end of the band-pass filter respectively, a second end of the thirtieth capacitor and a second end of the thirty-first capacitor are grounded, an Output end of the band-pass filter is connected with the antenna seat and a first end of the first resistor respectively, a second end of the first resistor is connected with a first end of the eighth inductor and a first end of the thirty-second capacitor respectively, a second end of the thirty-second capacitor is connected with a second end of the thirty-third capacitor and a second end of the antenna respectively and then grounded, and a second end of the eighth inductor is connected with a first end of the thirty-third capacitor and a first end of the antenna respectively.

[0013] In the scheme, the SPI_CSI end of the master control module is connected with the SX_SCK end of the LoRaWAN module after being connected with the fifty-sixth resistor in series, the SPI_CLK end of the master control module is connected with the SX_MISO end of the LoRaWAN module after being connected with the one hundred and first resistor in series, the SPI_MISO end of the master control module is connected with the SX_MOSI end of the LoRaWAN module after being connected with the one hundred and second resistor in series, and the SPI_MOSI end of the master control module is connected with the SX_CSN end of the LoRaWAN module after being connected with the one hundred and third resistor in series.

[0014] In the scheme, the USB_DP end of the master control module is connected with the AD6 end of the Bluetooth chip, and the USB_DM end of the master control module is connected with the AD4 end of the Bluetooth chip.

[0015] In the scheme, the MDI_RP_PO end, the MDI_RN_PO end, the MDI_TP_PO end and the MDI_TN_PO end of the master control module are connected with the RJ45 network port, and are used for transmitting data to the cloud server through Ethernet.

[0016] Compared with the prior art, the utility model discloses a gateway that integrates Bluetooth and LoRaWAN wireless communication technology, which can receive near-distance large concurrent Bluetooth data and also receive far-distance small concurrent LoRa data, and can realize real-time receiving of terminal data at different distances without distinguishing whether the terminal is a Bluetooth device or a LoRa device. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to disclose further understanding of the utility model, constitute a part of the utility model, and the illustrative embodiment and the explanation thereof are used to explain the utility model and do not constitute improper limitation to the utility model.

[0018] Figure 1 It is a structure schematic view of the gateway device that integrates Bluetooth and LoRaWAN wireless communication technology for the embodiment of the utility model;

[0019] Figure 2 It is a structure schematic view of the master control module for the embodiment of the utility model;

[0020] Figure 3 It is a structure schematic view of the Bluetooth chip for the embodiment of the utility model;

[0021] Figure 4 It is a structure schematic view of the antenna circuit for the embodiment of the utility model;

[0022] Figure 5 It is a structure schematic view of the LoRaWAN module for the embodiment of the utility model;

[0023] Figure 6 The structure diagram of the power supply circuit is shown in the embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0025] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the utility model, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0026] It should be noted that in this paper, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitations, the element defined by the sentence "including a…" does not exclude the presence of another identical element in the process, article or device including the element.

[0027] As Figures 1-5 shown, the embodiment one of the utility model provides a kind of integrated Bluetooth and LoRaWAN wireless communication technology gateway device, including power supply circuit, main control module U8, LoRaWAN module U4, 2.4G low-power Bluetooth module, cloud server;

[0028] Power supply circuit, for reducing 12V power supply to 3.3V constant voltage, and supply the main control module, 2.4G low-power Bluetooth module and LoRaWAN module U4;

[0029] Main control module U8, for receiving the signal output by LoRaWAN module U4 and 2.4G low-power Bluetooth module and processing data;

[0030] The LoRaWAN module U4 is connected to the main control module U8 for receiving LoRa scan data and sending the LoRa scan data to the main control module U8 through the SPI communication interface;

[0031] 2.4G low-power Bluetooth module, connected to the main control module U8, used to receive large amounts of concurrent Bluetooth scanning data from 100 meters away, and send the Bluetooth scanning data to the main control module through the USB communication interface;

[0032] The cloud server is used to receive the LoRa scan data and Bluetooth scan data uploaded by the main control module U8 via 2.4GWIFI or Ethernet.

[0033] like Figure 1 and Figure 5 and Figure 6 As shown, the power supply circuit includes a 12V power supply V_DCDCIN, a buck chip U15, a fifty-sixth capacitor C56, a fifty-eighth capacitor C58, a fifty-third capacitor C53, a forty-seventh capacitor C47, a sixty-first capacitor C61, a sixty-fifth capacitor C65, a sixtieth capacitor C60, a seventy-fifth resistor R75, a seventy-eighth resistor R78, an eighty-fifth resistor R85, an eighty-seventh resistor R87, and a fourth inductor L4. The output end of the 12V power supply V_DCDCIN is respectively connected to the first end of the fifty-sixth capacitor C56, the first end of the fifty-eighth capacitor C58, the VIN end of the buck chip U15, and the first end of the seventy-fifth resistor R75. The second end of the seventy-fifth resistor R75 is respectively connected to the first end of the seventy-eighth resistor R78 and the EN end of the buck chip U15. The BOOT end of the buck chip U15 is connected in series with the fifty-third capacitor C53 and then connected to the SW end of the step-down chip U15 and the first end of the fourth inductor L4 respectively. The second end of the fourth inductor L4 is respectively connected to the first end of the forty-seventh capacitor C47, the first end of the sixty-first capacitor C61, the first end of the sixty-fifth capacitor C65, the first end of the eighty-fifth resistor R58 and the first end of the sixtieth capacitor C60. The second end of the sixtieth capacitor C60 is respectively connected to the second end of the eighty-fifth resistor R85, the first end of the eighty-seventh resistor R87 and the FB end of the buck chip U15. The second end of the eighty-seventh resistor R87 is respectively connected to the second end of the seventy-eighth resistor R78, the second end of the sixty-fifth capacitor C65 and the second end of the sixty-first capacitor C61 and then grounded. The second end of the forty-seventh capacitor C47 is grounded.

[0034] In the above scheme, a 12V power supply V_DCDCIN is used to supply power to the later-stage voltage reduction chip U15, which is a model TPP363082-T6TR with a current capacity of 3A, but is not limited to other voltage reduction chips U15. The voltage reduction chip U15 converts the input through internal switching to output a constant voltage of 3.3V to supply power to the main control module U8, the 2.4G low-power Bluetooth module, and the LoRaWAN module U4.

[0035] The 2.4G low-power Bluetooth module includes a Bluetooth chip U1 and an antenna circuit, which includes an antenna seat sub AJ1, an antenna Antenna, a first resistor R1, an eighth inductor L8, a thirty-second capacitor C32, a thirty-third capacitor C33, a band-pass filter SFLT1, a seventh inductor L7, a thirtieth capacitor C30, a thirty-first capacitor C31, a front-end control chip U2, a third inductor L3, a thirteenth capacitor C13, and a fourteenth capacitor C14. The first end of the third inductor L3 is connected to the ANT end of the Bluetooth chip U1 and the first end of the thirteenth capacitor C13, respectively. The second end of the third inductor L3 is connected to the first end of the fourteenth capacitor C14 and the TXRX end of the front-end control chip U2, respectively. The second end of the thirteenth capacitor C13 and the second end of the fourteenth capacitor C14 are both grounded. The ANT end of the front-end control chip U2 is connected to the first end of the thirtieth capacitor C30 and the first end of the seventh inductor L7, respectively. The second end of the seventh inductor L7 is connected to the first end of the thirty-first capacitor C31 and the Input end of the band-pass filter SFLT1, respectively. The second end of the thirtieth capacitor C30 and the second end of the thirty-first capacitor C31 are both grounded. The Output end of the band-pass filter SFLT1 is connected to the first end of the first resistor R1 and the antenna seat sub AJ1, respectively. The second end of the first resistor R1 is connected to the first end of the eighth inductor L8 and the first end of the thirty-second capacitor C32, respectively. The second end of the thirty-second capacitor C32 is connected to the second end of the thirty-third capacitor C33 and the second end of the antenna Antenna, and then grounded. The second end of the eighth inductor L8 is connected to the first end of the thirty-third capacitor C33 and the first end of the antenna Antenna, respectively.

[0036] As Figure 1 , Figure 2 and Figure 4As shown, the SPI_CSI end of the master module U8 is connected with the SX_SCK end of the LoRaWAN module U4 in series after the fifty-sixth resistor R56, the SPI_CLK end of the master module U8 is connected with the SX_MISO end of the LoRaWAN module U4 in series after the one hundred and first resistor R101, the SPI_MISO end of the master module U8 is connected with the SX_MOSI end of the LoRaWAN module U4 in series after the one hundred and second resistor R102, and the SPI_MOSI end of the master module U8 is connected with the SX_CSN end of the LoRaWAN module U4 in series after the one hundred and third resistor R103.

[0037] In the above scheme, the master module U8 is an MT7628NN baseband chip with a 575 / 580MHz MIPS 24K CPU core, a routing chip working in a 2.4G frequency band, supporting 802.11b / g / n network standard protocols, with five groups of 10 / 100M Ethernet network communication protocol interfaces, with one group of USB2.0 communication protocol interfaces, with one group of SPI interfaces, with one group of SD card protocol interfaces, with two groups of universal asynchronous receiver-transmitter protocol interfaces, with a reset, with multiple general input / output pins, and the like, supporting external hanging of 128 / 256Mb double-rate synchronous dynamic random access memory, and the master controller is responsible for scanning the Bluetooth module and the LoRaWAN module to data and uploading the data to a cloud server through 2.4G WIFI or Ethernet, the master module has a wireless communication rate of 300Mbps, which fully meets the network interaction with the server; the LoRaWAN module is an SX1302 LoRa baseband chip, which can detect and demodulate a large number of SF5-SF12 spread factor LoRa data packets, supports 16-channel LoRa data packet detection, supports LoRa125 / 250 / 500KHz bandwidth modulation, is connected with a front-end Sub-GHz radio frequency chip SX1250, works in half-duplex, has an external 32MHz clock source, has a receiving sensitivity of-135dbm in an SF9-125KHz mode, can receive LoRa scanning data outside the city for kilometers, and the LoRaWAN module is responsible for sending the scanned data to the master module through an SPI communication interface.

[0038] As shown in Figure 1 , Figure 2 and Figure 3 , the USB_DP end of the master module U8 is connected with the AD6 end of the Bluetooth chip U1, and the USB_DM end of the master module U8 is connected with the AD4 end of the Bluetooth chip U1.

[0039] In the scheme, the model of the 2.4G low-power Bluetooth chip U1 is nRF52833, ARM cortex-M4 32bit core, 512KB flash / 128KB RAM, external 32MHz clock crystal, supporting low-power Bluetooth 5.1, -96dbm receiving sensitivity @1Mbps rate, -20 to 8dbm adjustable transmitting power, single-ended antenna output, a group of USB2.0 high-speed communication protocol interface, supporting near field communication NFC, with 2 groups of universal asynchronous receiver protocol interface, etc., connecting a power amplification chip, the model of the power amplification chip 8TR8210 is an ISM front-end control chip, the working frequency is 2.4G, which is a power amplifier chip integrating transmission and reception, integrating 20dbm output power, integrating 2.5db receiving noise suppression, increasing the power amplification chip significantly improves the Bluetooth receiving sensitivity and increases the Bluetooth scanning distance, can receive the data of a large concurrent quantity of Bluetooth scanning 100 meters away, and the Bluetooth module is responsible for sending the scanned data to the main control module through the USB communication interface.

[0040] As shown in Figure 1 and Figure 2 The MDI_RP_PO end, the MDI_RN_PO end, the MDI_TP_PO end and the MDI_TN_PO end of the main control module U8 are connected with the RJ45 network port, and are used for transmitting data to the cloud server through Ethernet.

[0041] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. An integrated Bluetooth and LoRaWAN wireless communication technology gateway device, characterized in that, The power supply circuit, the main control module, the LoRaWAN module, the 2.4G low-power Bluetooth module and the cloud server are included. The power supply circuit is used for reducing 12V power supply to 3.3V constant voltage and supplying the main control module, the 2.4G low-power Bluetooth module and the LoRaWAN module. The main control module is used for receiving signals output by the LoRaWAN module and the 2.4G low-power Bluetooth module and processing data. The LoRaWAN module is in communication connection with the main control module and is used for receiving LoRa scanning data and sending the LoRa scanning data to the main control module through an SPI communication interface. The 2.4G low-power Bluetooth module is in communication connection with the main control module and is used for receiving large concurrent Bluetooth scanning data outside 100 meters and sending the Bluetooth scanning data to the main control module through a USB communication interface. The cloud server is used for receiving LoRa scanning data and Bluetooth scanning data uploaded by the main control module through 2.4G WIFI or Ethernet.

2. The integrated Bluetooth and LoRaWAN wireless communication technology gateway device of claim 1, wherein, The power supply circuit includes a 12V power supply, a step-down chip, a fifty-sixth capacitor, a fifty-eighth capacitor, a fifty-third capacitor, a forty-seventh capacitor, a sixty-first capacitor, a sixty-fifth capacitor, a sixtieth capacitor, a seventy-fifth resistor, a seventy-eighth resistor, an eighty-fifth resistor, an eighty-seventh resistor and a fourth inductor, the output end of the 12V power supply is connected with the first end of the fifty-sixth capacitor, the first end of the fifty-eighth capacitor, the VIN end of the step-down chip and the first end of the seventy-fifth resistor respectively, the second end of the seventy-fifth resistor is connected with the first end of the seventy-eighth resistor and the EN end of the step-down chip respectively, the BOOT end of the step-down chip is connected with the SW end of the step-down chip and the first end of the fourth inductor after being connected with the fifty-third capacitor in series, the second end of the fourth inductor is connected with the first end of the forty-seventh capacitor, the first end of the sixty-first capacitor, the first end of the sixty-fifth capacitor, the first end of the eighty-fifth resistor and the first end of the sixtieth capacitor respectively, the second end of the sixtieth capacitor is connected with the second end of the eighty-fifth resistor and the first end of the eighty-seventh resistor and the FB end of the step-down chip respectively, the second end of the eighty-seventh resistor is connected with the second end of the seventy-eighth resistor, the second end of the sixty-fifth capacitor and the second end of the sixty-first capacitor and grounded after being connected, and the second end of the forty-seventh capacitor is grounded.

3. The integrated Bluetooth and LoRaWAN wireless communication technology gateway device of claim 2, wherein The 2.4G low-power Bluetooth module includes a Bluetooth chip and an antenna circuit, and the antenna circuit includes an antenna seat, an antenna, a first resistor, an eighth inductor, a thirty-second capacitor, a thirty-third capacitor, a band-pass filter, a seventh inductor, a thirtieth capacitor, a thirty-first capacitor, a front-end control chip, a third inductor, a thirteenth capacitor, and a fourteenth capacitor.

4. The integrated Bluetooth and LoRaWAN wireless communication technology gateway device of claim 2, wherein, The SPI_CSI end of the master control module is connected with the SX_SCK end of the LoRaWAN module in series with the fifty-sixth resistor, the SPI_CLK end of the master control module is connected with the SX_MISO end of the LoRaWAN module in series with the one hundred and first resistor, the SPI_MISO end of the master control module is connected with the SX_MOSI end of the LoRaWAN module in series with the one hundred and second resistor, and the SPI_MOSI end of the master control module is connected with the SX_CSN end of the LoRaWAN module in series with the one hundred and third resistor.

5. The integrated Bluetooth and LoRaWAN wireless communication technology gateway device of claim 2 or 3, wherein, The USB_DP end of the master control module is connected with the AD6 end of the Bluetooth chip, and the USB_DM end of the master control module is connected with the AD4 end of the Bluetooth chip.

6. The integrated Bluetooth and LoRaWAN wireless communication technology gateway device of claim 4, wherein, The MDI_RP_PO end, the MDI_RN_PO end, the MDI_TP_PO end and the MDI_TN_PO end of the master control module are connected with the RJ45 network port, for transmitting data to the cloud server through Ethernet.

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