CN221042900U - Multiple path transmission data circuit based on bluetooth gateway - Google Patents

Abstract

The utility model discloses a Bluetooth gateway-based multi-path data transmission circuit, which comprises a MICRO USB adapter, a POE power supply circuit, a DC-DC voltage reduction circuit, a DC-DC conversion circuit, a low dropout linear voltage regulator, a 2.4G low-power consumption Bluetooth chip circuit, a USB expansion control module, a 4G communication network module, a baseband chip circuit, a POE function module circuit and a reset circuit, wherein the power supply circuit is connected with the MICRO USB adapter; based on the expansion design of the Ethernet module and the 4G communication module in the IoT field, the utility model realizes automatic switching to the 4G communication network under the condition that the Ethernet communication network is not easy to deploy or the wireless communication network is unstable, realizes free switching seamless connection of the communication network, and finally, data loss caused by discontinuity of the communication network is avoided, and cloud data integrity is reserved.

Description

Multiple path transmission data circuit based on bluetooth gateway

Technical Field

The utility model relates to the technical field of multiple path transmission data circuits, in particular to a multiple path transmission data circuit based on a Bluetooth gateway.

Background

The Internet of things gateway is used for connecting the Internet of things with the heart, so that data of the terminal equipment are transmitted to the cloud server, and the command sent by the cloud server is transmitted to the terminal equipment, so that bidirectional connection is realized, and all things are interconnected. The living mode of the traditional people is changed, so that people can sense objects beyond thousand miles remotely to realize control. However, conventional connection networks such as wireless networks are extremely susceptible to the external environmental effects of distance, buildings, obstructions, etc., but are not possible to avoid. In a conventional ethernet communication network, although the communication network is stable, the wiring mode needs to be added due to the limitation of the position of the communication network, so that the cost is increased. Or some circumstances may make it inconvenient to connect to an ethernet communication network.

Disclosure of utility model

Accordingly, a primary object of the present utility model is to provide a bluetooth gateway-based multi-path data transmission circuit.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

The embodiment of the utility model provides a Bluetooth gateway-based multi-path data transmission circuit, which comprises a MICRO USB adapter, a POE power supply circuit, a DC-DC voltage reduction circuit, a DC-DC conversion circuit, a low-dropout linear voltage regulator, a 2.4G low-power Bluetooth chip circuit, a USB expansion control module, a 4G communication network module, a baseband chip circuit, a POE function module circuit and a reset circuit, wherein the MICRO USB adapter respectively supplies power to the baseband chip circuit and the 4G communication network module after being reduced in voltage by the DC-DC voltage reduction circuit, the POE power supply circuit supplies power to the 2.4G low-power Bluetooth chip circuit after being stabilized in voltage by the DC-DC conversion circuit, the signal output end of the 2.4G low-power Bluetooth chip circuit is connected with the signal input end of the USB expansion control module, the signal output end of the USB expansion control module is respectively connected with the signal input end of the 4G communication network module and the signal input end of the baseband chip circuit, and the signal output end of the baseband chip circuit is connected with the signal input end of the reset circuit.

IN the above scheme, the MICRO USB adapter includes a current limiting switch chip, a key switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second diode, a first triode, a first transistor, a second transistor, and a third transistor, where an IN end of the current limiting switch chip is connected to the USB power supply terminal VUSB, an OUT end of the current limiting switch chip is connected to a first end of the first resistor, an emitter of the first triode, a first end of the third resistor, and a source of the first transistor, a second end of the first resistor is connected to a cathode of the first diode and a first end of the second resistor, a collector of the first triode is connected to a second end of the third resistor, a first end of the fourth resistor, a gate of the first transistor, and a gate of the second transistor, drain of the first transistor is connected to a first end of the first resistor, an emitter of the first triode, a source of the third transistor is connected to a drain of the third transistor, a drain of the third transistor is connected to a drain of the third transistor, and a drain of the fourth transistor is connected to a drain of the third transistor, and a drain of the third transistor is connected to a drain of the third transistor; the DC-DC voltage reduction circuit comprises a voltage reduction chip, a sixth resistor and a first inductor, wherein the sixth end of the key switch is connected with the PG end of the voltage reduction chip after being connected with the sixth resistor in series, and the SW end of the voltage reduction chip is connected with the output end of the 3.3V constant current power supply after being connected with the first inductor in series.

In the above scheme, the POE power supply circuit includes a POE power supply functional module chip, a first capacitor, a second capacitor, a third capacitor, a second inductor, a third inductor, and a fourth inductor, where the USB power supply terminal VUSB is connected to the first end of the first capacitor and the first end of the second inductor, the second end of the first capacitor is connected to the VSS end of the POE power supply functional module chip, the second end of the second inductor is connected to the first end of the third inductor and the first end of the second capacitor, the second end of the second capacitor is connected to the first end of the fourth inductor, and the second end of the fourth inductor is connected to the first end of the third capacitor; the DC-DC conversion circuit comprises a first rectifier, a second rectifier, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor and an eleventh capacitor, wherein the first end of the fourth capacitor is respectively connected with the second end of a third capacitor, the first end of the first rectifier, the first end of the sixth capacitor, the first end of the eighth capacitor, the first end of the second rectifier and the first end of the tenth capacitor, the second end of the fourth capacitor is respectively connected with the first end of the fifth capacitor and the third end of the first rectifier, the fourth end of the first rectifier is respectively connected with the second end of the sixth capacitor and the first end of the seventh capacitor, the second end of the first rectifier is respectively connected with the second end of the second rectifier and the second end of the fourth inductor, the third end of the second rectifier is respectively connected with the second end of the eighth capacitor and the first end of the ninth capacitor, the second end of the second rectifier is respectively connected with the fourth end of the fourth capacitor, the fourth end of the fourth capacitor is respectively connected with the fourth end of the fourth capacitor and the eleventh capacitor, and the fourth end of the fourth capacitor is respectively connected with the fourth end of the fourth capacitor.

In the above scheme, the low dropout linear regulator includes a low dropout linear regulator chip and a seventh resistor, a VIN end of the low dropout linear regulator chip is connected to a first end of the sixth resistor, and a VOUT end of the low dropout linear regulator chip is connected to a power supply output VCC.

In the above scheme, the 2.4G bluetooth low energy chip circuit includes a bluetooth chip, a front end control chip, a radio frequency filter, an RF radio frequency terminal, a fifth inductor, a sixth inductor, an eighth resistor, and a ninth resistor, wherein the VDD terminal of the bluetooth chip is connected to the power Output VCC, the ANT terminal of the bluetooth chip is sequentially connected in series with the fifth inductor and the eighth resistor and then connected to the TXRX terminal of the front end control chip, the TXEN terminal of the front end control chip is connected in series with the ninth resistor and then connected to the P1.04 terminal of the bluetooth chip, the RXEN terminal of the front end control chip is connected in series with the tenth resistor and then connected to the P1.02 terminal of the bluetooth chip, the MODE terminal of the front end control chip is connected in series with the eleventh resistor and then connected to the P1.06 terminal of the bluetooth chip, the ANT terminal of the front end control chip is connected in series with the Input terminal of the radio frequency filter after being connected in series with the sixth inductor, and the Output terminal of the radio frequency filter is connected in series with the Output terminal of the RF terminal.

IN the above scheme, the USB expansion control module includes a USB expansion control chip, a first ESD diode, a second ESD diode, and a crystal oscillator, where the AVDD end of the USB expansion control chip, the VCC end of the first ESD diode, and the VCC end of the second ESD diode are all connected to the 3.3V constant current power supply output end, the DP1 end of the USB expansion control chip is connected to the D-end and the d+ end of the bluetooth chip, the DMO end of the USB expansion control chip is connected to the I/o_4 end of the first ESD diode, the DPO end of the USB expansion control chip is connected to the I/o_6 end of the first ESD diode, the DM1 end of the USB expansion control chip is connected to the I/o_3 end of the first ESD diode, the X1 end of the USB expansion control chip is connected to the OUT end of the crystal oscillator, the X2 end of the USB expansion control chip is connected to the IN end of the crystal oscillator, the DM1 end of the USB expansion control chip is connected to the I/o_3 end of the second ESD diode, and the DM1 end of the USB expansion control chip is connected to the I/o_4 end of the second ESD diode.

In the above scheme, the 4G communication network module includes a 4G communication network module, a third ESD diode, a thirteenth resistor, and a fourteenth resistor, where the 4G communication network module is connected to a first end of the thirteenth resistor, a second end of the thirteenth resistor is connected to an I/o_6 end of the third ESD diode and a DP2 end of the USB extended control chip, the 4G communication network module is connected to the first end of the fourteenth resistor, a second end of the fourteenth resistor is connected to an I/o_4 end of the third ESD diode and a DM2 end of the USB extended control chip, and both a usb_vbus end of the 4G communication network module and a VCC end of the third ESD diode are connected to a VIN end of the low-dropout linear regulator chip.

In the above scheme, the baseband chip circuit comprises a baseband chip, the usb_d+ end and the usb_d-end of the baseband chip are respectively and correspondingly connected with the DP0 end and the DM0 end of the USB expansion control chip U16, and the VIN ends of the baseband chip are respectively connected with the 3.3V constant current power supply output ends.

In the above scheme, the POE functional module circuit includes a master control chip and an MJ45 network interface, a td1+ end of the master control chip is connected with a TXOP0 end of the baseband chip, a TD 1-end of the master control chip is connected with a TXON0 end of the baseband chip, a rd+ end of the master control chip is connected with a PXIP end of the baseband chip, a RD-end of the master control chip is connected with a RXIN end of the baseband chip, a TX1+ end of the master control chip is connected with a tx+ end of the MJ45 network interface, a TX 1-end of the master control chip is connected with a tx+ end of the MJ45 network interface, a rx+ end of the master control chip is connected with a rx+ end of the MJ45 network interface, and a RX-end of the master control chip is connected with a RX-end of the MJ45 network interface.

IN the above scheme, the reset circuit comprises a reset chip, the VDD end of the reset chip is connected with the output end of the 3.3V constant current power supply, the wd_in end of the reset chip is connected with the i2c_sclk end of the baseband chip, and the wd_en end of the reset chip is connected with the i2c_sd end of the baseband chip.

Compared with the prior art, the utility model has the beneficial effects that:

Based on the expansion design of the Ethernet module and the 4G communication module in the IoT field, the utility model realizes automatic switching to the 4G communication network under the condition that the Ethernet communication network is not easy to be deployed or the wireless communication network is unstable, realizes free switching seamless connection of the communication network, finally, cannot cause data loss due to discontinuity of the communication network, and reserves the integrity of cloud data _.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic diagram of a structure of a data transmission circuit based on multiple paths of a bluetooth gateway according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a MICROUSB adapter in a multiple path data transmission circuit based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 3 is a schematic structural diagram of a DC-DC step-down circuit in a multiple path data transmission circuit based on a bluetooth gateway according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of POE power supply in a bluetooth gateway-based multi-path data transmission circuit according to an embodiment of the present utility model;

Fig. 5 is a schematic structural diagram of a low dropout linear voltage regulator in a multiple path transmission data circuit based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 6 is a schematic structural diagram of a bluetooth chip in a data circuit for transmitting data in multiple paths based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 7 is a schematic diagram of a connection structure of a front-end control chip, a radio frequency filter and an RF radio frequency terminal in a multiple path transmission data circuit based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 8 is a schematic structural diagram of a USB expansion control module in a data circuit for transmitting data through multiple paths based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 9 is a schematic structural diagram of a 4G communication network module in a multiple path data transmission circuit based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 10 is a schematic structural diagram of a baseband chip in a data circuit for transmitting data in multiple paths based on a bluetooth gateway according to an embodiment of the present utility model;

Fig. 11 is a schematic structural diagram of a POE functional module circuit in a bluetooth gateway-based multi-path data transmission circuit according to an embodiment of the present utility model;

Fig. 12 is a schematic diagram of a reset circuit in a multiple path data transmission circuit based on a bluetooth gateway according to an embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the devices or elements being referred to must have specific directions, be constructed and operated in specific directions, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration, are not to be construed as limitations of the present patent, and the specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, article or apparatus that comprises the element.

The embodiment of the utility model provides a Bluetooth gateway-based multi-path data transmission circuit, which comprises a MICRO USB adapter, a POE power supply circuit, a DC-DC voltage reduction circuit, a DC-DC conversion circuit, a low dropout linear voltage regulator, a 2.4G low power consumption Bluetooth chip circuit, a USB expansion control module, a 4G communication network module, a baseband chip circuit, a POE function module circuit and a reset circuit, wherein the MICRO USB adapter respectively supplies power to the baseband chip circuit and the 4G communication network module after voltage reduction through the DC-DC voltage reduction circuit, the POE power supply circuit supplies power to the 2.4G low power consumption Bluetooth chip circuit after voltage stabilization through the DC-DC conversion circuit, the signal output end of the 2.4G low power consumption Bluetooth chip circuit is connected with the signal input end of the USB expansion control module, the signal output end of the USB expansion control module is respectively connected with the signal input end of the 4G communication network module and the signal input end of the baseband chip circuit, the signal output end of the baseband chip circuit is connected with the signal input end of the reset circuit, and the POE communication chip is connected with the function module.

As shown IN fig. 2, the MICRO USB adapter includes a current limiting switch chip U1, a key switch J1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first diode D1, a second diode D2, a first transistor S1, a first transistor Q1, a second transistor Q2, and a third transistor Q3, wherein an IN terminal of the current limiting switch chip U1 is connected to a USB power supply terminal VUSB, an OUT terminal of the current limiting switch chip U1 is connected to a first terminal of the first resistor R1, an emitter of the first transistor R1, a first terminal of the third resistor R3, a source of the first transistor Q1, a second terminal of the first resistor R1 is connected to a negative terminal of the first diode D1, a first terminal of the second resistor R2, a second terminal of the second transistor Q2 is connected to a base of the first transistor S1, a drain terminal of the first transistor V1 is connected to a drain terminal of the third transistor Q2, a drain terminal of the third transistor Q2 is connected to the third transistor Q2, and a drain terminal of the third transistor is connected to the third transistor Q2, and a drain terminal of the third transistor is connected to the third terminal of the third transistor.

As shown in fig. 3, the DC-DC voltage reducing circuit includes a voltage reducing chip U2, a sixth resistor R6, and a first inductor L1, where a sixth end of the key switch J1 is connected in series with the sixth resistor R6 and then connected to a PG end of the voltage reducing chip U2, and a SW end of the voltage reducing chip U2 is connected in series with the first inductor L1 and then connected to a 3.3V constant current power supply output end +3_3vp.

As shown in fig. 4, the POE power supply circuit includes POE power supply function module chip U3, first capacitor C1, second capacitor C2, third capacitor C3, second inductance L2, third inductance L3, fourth inductance L4, USB power supply end VUSB is connected with the first end of first capacitor C1 and the first end of second inductance L2 respectively, the second end of first capacitor C1 is connected with the VSS end of POE power supply function module chip U3, the second end of second inductance L2 is connected with the first end of third inductance L3 and the first end of second capacitor C2 respectively, the second end of second capacitor C2 is connected with the first end of fourth inductance L4, the second end of fourth inductance L4 is connected with the first end of third capacitor C3.

The DC-DC conversion circuit includes a first rectifier BD1, a second rectifier BD2, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, and an eleventh capacitor C11, wherein a first end of the fourth capacitor C4 is connected to a second end of the third inductor L3, a second end of the third capacitor C3, a first end of the first rectifier BD1, a first end of the sixth capacitor C6, a first end of the eighth capacitor C8, a first end of the second rectifier BD2, and a first end of the tenth capacitor C10, respectively, a second end of the fourth capacitor C4 is connected to a first end of the fifth capacitor C5 and a third end of the first rectifier BD1, respectively, a fourth end of the first rectifier BD1 is connected to a second end of the sixth capacitor C6 and a first end of the seventh capacitor C7, respectively, a second end of the first rectifier BD1 is connected to a first end of the fourth inductor BD2 and a first end of the eighth capacitor C10, respectively, and a third end of the fourth capacitor C11 is connected to a fourth end of the fourth capacitor C2 and a third end of the eighth capacitor C9, respectively, and a fourth end of the fourth capacitor C11 is connected to a fourth end of the fourth capacitor C2 and a third end of the fourth capacitor C11, respectively.

As shown in fig. 5, the low dropout linear regulator includes a low dropout linear regulator chip U4 and a seventh resistor R7, the VIN end of the low dropout linear regulator chip U4 is connected to the first end of the sixth resistor R6, and the VOUT end of the low dropout linear regulator chip U4 is connected to the power supply output end VCC.

As shown in fig. 6 and 7, the 2.4G bluetooth low energy chip circuit includes a bluetooth chip MU1, a front end control chip U5, a radio frequency filter U6, an RF radio frequency terminal U7, a fifth inductor L5, a sixth inductor L6, an eighth resistor R8, and a ninth resistor R9, where the VDD end of the bluetooth chip MU1 is connected to the power Output VCC, the ANT end of the bluetooth chip MU1 is sequentially connected in series with the fifth inductor L5 and the eighth resistor R8 and then connected to the TXRX end of the front end control chip U5, the TXEN end of the front end control chip U5 is connected to the P1.04 end of the bluetooth chip MU1 after being connected in series with the ninth resistor R9, the MODE end of the front end control chip U5 is connected to the P1.02 end of the bluetooth chip MU1 after being connected in series with the eleventh resistor R11, and then connected to the Input 1.06 end of the bluetooth chip MU1, and the TXEN end of the front end control chip U5 is connected to the RF filter U6 after being connected to the RF end of the front end control chip U6.

As shown IN fig. 8, the USB expansion control module includes a USB expansion control chip U16, a first ESD diode U8, a second ESD diode U9, and a crystal oscillator Y2, where the AVDD end of the USB expansion control chip U16, the VCC end of the first ESD diode U8, and the VCC end of the second ESD diode U9 are all connected to the 3.3V constant current power supply output end, the DP1 end of the USB expansion control chip U16 is connected to the D-end and the d+ end of the bluetooth chip MU1, the DMO end of the USB expansion control chip U16 is connected to the I/o_4 end of the first ESD diode U8, the DPO end of the USB expansion control chip U16 is connected to the I/o_6 end of the first ESD diode U8, the DM1 end of the USB expansion control chip U16 is connected to the I/o_1 end of the first ESD diode U8, the DP1 end of the USB expansion control chip U16 is connected to the I/o_3 end of the first ESD diode U8, the DM1 end of the USB expansion control chip U16 is connected to the I/o_6 end of the first ESD diode U8, and the DM1 end of the USB expansion control chip U16 is connected to the I/o_6 end of the second ESD diode U9.

As shown in fig. 9, the 4G communication network module includes a 4G communication network module U10, a third ESD diode U11, a thirteenth resistor R13, and a fourteenth resistor R14, where the 4G communication network module U10 is connected to a first end of the thirteenth resistor R13, a second end of the thirteenth resistor R13 is connected to an I/o_6 end of the third ESD diode U11 and a DP2 end of the USB extended control chip U16, the 4G communication network module U10 is connected to a first end of the fourteenth resistor R14, a second end of the fourteenth resistor R14 is connected to an I/o_4 end of the third ESD diode U11 and a DM2 end of the USB extended control chip U16, and both a usb_vbus end of the 4G communication network module U10 and a VCC end of the third ESD diode U11 are connected to a terminal of the low-dropout linear regulator chip U4 VIN.

As shown in fig. 10, the baseband chip circuit includes a baseband chip U12, a usb_d+ end and a usb_d-end of the baseband chip U12 are respectively connected with a DP0 end and a DM0 end of the USB expansion control chip U16, and VIN ends of the baseband chip U12 are respectively connected with a 3.3V constant current power supply output end +3_3vp.

As shown in fig. 11, the POE functional module circuit includes a main control chip U13 and an MJ45 network interface U14, a td1+ end of the main control chip U13 is connected to a TXOP0 end of the baseband chip U12, a TD 1-end of the main control chip U13 is connected to a TXON0 end of the baseband chip U12, a rd+ end of the main control chip U13 is connected to a PXIP end of the baseband chip U12, a RD-end of the main control chip U13 is connected to a RXIN0 end of the baseband chip U12, a TX1+ end of the main control chip U13 is connected to a tx+ end of the MJ45 network interface U14, a TX 1-end of the main control chip U13 is connected to a TX-end of the MJ45 network interface U14, a rx+ end of the main control chip U13 is connected to a rx+ end of the MJ45 network interface U14, and a RX-end of the main control chip U13 is connected to a RX-end of the MJ45 network interface U14.

As shown IN fig. 12, the reset circuit includes a reset chip U15, a VDD terminal of the reset chip U15 is connected to a 3.3V constant current power supply output terminal +3_3vp, a wd_in terminal of the reset chip U15 is connected to an i2c_sclk terminal of the baseband chip U12, and a wd_en terminal of the reset chip U15 is connected to an i2c_sd terminal of the baseband chip U12.

The working principle of the utility model is as follows:

As shown in fig. 1-11, the power supply mode is flexible, and most application scenarios can be adapted, and a 5V MICRO USB adapter or POE power supply device conforming to the IEEE 802.3af standard can be selected. The 5V MICRO USB adapter is used for supplying power to the post-stage buck chip, the buck chip is model EML3321, the current carrying capacity is 3A, but the buck chip is not limited to other buck chips. The step-down chip is the model EML3321, and constant voltage of 3.3V is output to supply power to the USB expansion control module, the 4G communication network module U10 and the baseband chip circuit of the next stage through internal energy conversion. Meanwhile, the 5V MICRO USB adapter also supplies power to the low-dropout linear voltage regulator chip of the rear stage, the model of the low-dropout linear voltage regulator chip is RT9193-33GB, the current carrying capacity is 300mA, and the low-dropout linear voltage regulator chip is not limited to other low-dropout linear voltage regulator chips. The low-dropout linear voltage regulator is of a model RT9193-33GB, and outputs constant voltage of 3.3V through internal switch conversion to supply power for a 2.4G low-power consumption Bluetooth chip circuit of the next stage.

And power is supplied to the POE functional module at the later stage by using POE power supply equipment conforming to the IEEE 802.3af standard, wherein the POE functional module chip is of a model SI3404, has current carrying capacity of more than 1A, and is not limited to other POE chips supporting the IEEE 802.3af standard. The POE chip SI3404 outputs a constant voltage of 5V to supply power to a DC-DC voltage reducing circuit of the next stage through internal high-voltage energy conversion. Meanwhile, constant voltage of 5V is output to supply power for the model RT9193-33GB of the low-dropout linear voltage regulator, and the model RT9193-33GB of the low-dropout linear voltage regulator is converted by an internal switch to output constant voltage of 3.3V to supply power for the 2.4G low-power consumption Bluetooth chip circuit of the next stage.

The model of the 2.4G low-power Bluetooth chip is nRF52840, an ARM core-M4 32bit core, and the clock frequency is 32 MHz. The system supports the low-power consumption Bluetooth 5.0 standard, the receiving sensitivity of-95 dbm is at the speed of 1Mbps, the adjustable transmitting power of-20 to 8dbm, the output of a single-ended antenna, a set of USB2.0 high-speed communication protocol interfaces, the NFC support, a set of universal asynchronous receiver-transmitter protocol interfaces with 2 sets and the like. The plug-in power amplification is carried out, the chip type RFX2401C is an ISM front end control chip, the working frequency is 2.4G, and the plug-in power amplification is a switch chip integrating transmission and reception. The integrated 22dbm output power, the integrated 12db receiving gain, the chip model RFX2401C provides the functions of receiving and transmitting and amplifying power for the 2.4G low-power Bluetooth chip nRF 52840.

The USB2.0 expansion control module chip is a model GL850G-OHY60, supports the USB2.0 standard protocol, and supports high-speed, full-speed and low-speed modules. With 1 group of upstream USB2.0 communication protocol ports, the 1 group of upstream USB2.0 communication protocol ports are expanded into 4 groups of downstream USB2.0 communication protocol ports.

The 2.4G low-power Bluetooth chip model nRF52840 can scan the broadcast packet data sent by the surrounding 2.4G low-power Bluetooth beacons outside hundred meters through the power amplification chip model RFX2401C, the scanned 2.4G low-power Bluetooth beacon broadcast packet data is transmitted to the USB2.0 expansion control module model GL850G-OHY60 after being analyzed by the packet, the first pair of downlink USB2.0 communication protocol ports of the GL850G chip are transmitted to the USB2.0 expansion control module model GL850G uplink USB2.0 communication protocol ports, and then the model GL850G uplink USB2.0 communication protocol ports transmit the 2.4G low-power Bluetooth beacon broadcast packet data to the baseband chip.

The 4G communication network module has the chip model of EC600N-CN, belongs to LTE Cat1 series (low-rate 4G Internet of things chip), and supports LTE-FDD (frequency division duplex) and LTE-TDD (time division duplex). LTE-FDD (frequency division Duplex) uplink communication rate 5Mbps, downlink communication rate 10Mbps. LTE-TDD (time division duplex) has an uplink communication rate of 1Mbps and a downlink communication rate of 7.5Mbps. An external SIM card network communication interface, a 1 group USB2.0 communication protocol interface, a 2 group universal asynchronous receiver-transmitter protocol interface and the like.

The method comprises the steps that 2.4G low-power-consumption Bluetooth chip model nRF52840 is scanned to obtain 2.4G low-power-consumption Bluetooth beacon broadcasting packet data, the data are transmitted to a USB2.0 expansion control module after the data are analyzed and packaged, a first pair of downlink USB2.0 communication protocol ports of chip model GL850G are transmitted to a USB2.0 expansion control module chip which is an uplink USB2.0 communication protocol port of model GL850G, and then the uplink USB2.0 communication protocol port of chip model GL850G transmits the 2.4G Bluetooth beacon broadcasting packet data to a baseband chip circuit. When the baseband chip circuit detects that the communication network is disconnected or is in an unstable connection state, the data of the 2.4G low-power Bluetooth beacon broadcast packet is automatically transmitted to the GL850G second pair of downlink USB2.0 communication protocol ports through the USB2.0 communication protocol ports, then the downlink USB2.0 communication protocol ports transmit the data of the 2.4G low-power Bluetooth beacon broadcast packet to a fourth functional module chip model EC600N, the EC600N is transmitted to the SIM card network communication interface after data processing, and finally the data of the received 2.4G low-power Bluetooth beacon broadcast packet is transmitted to the cloud server in a SIM card data flow mode.

The model of the main controller module is MT7628N_38P baseband chip, 575/580MHz MIPS 24K CPU kernel. The routing chip works in the 2.4G frequency band, supports 802.11b/G/n network standard protocol, has 5 10/100M Ethernet network communication protocol interfaces, has a USB2.0 communication protocol interface, has an SD card protocol interface, supports plug-in 128/256Mb double-rate synchronous dynamic random access memory, has a universal asynchronous receiver-transmitter protocol interface, has reset, has a plurality of universal input/output pins and the like.

The POE functional module consists of an MJ45 network port seat, a transformer model S16-2019 and a POE chip model SI 3404. The model S16-2019 transformer supports the IEEE 802.3af standard, has POE function and has 720mA current carrying capacity.

The main control module is MT7628NN baseband chip, which is used as a core chip of the new technical design scheme, and the MT7628N_38PN baseband chip is used as the core chip to develop the peripheral circuit design. The MT7628N_38PMT7628NN baseband chip is used as a core chip, one of peripheral circuit designs is developed, and the MT7628N_38PMT7628NN baseband chip is connected with the USB expansion control module through a USB2.0 communication protocol interface, so that a data connection function is established. And then the baseband chip MT7628N_38PMT7628NN transmits the received 2.4G low-power Bluetooth beacon broadcast packet data sent by the USB expansion control module to a transformer with the model of S16-20162019 in the POE functional module through a 10/100M Ethernet network communication protocol interface, the transformer with the model of S16-20162019 is transmitted to an RJ45MJ45 network port seat in a differential signal coupling mode, and finally the RJ45MJ45 network port seat forwards the received 2.4G low-power Bluetooth beacon broadcast packet data to a cloud server. MT7628N_38PMT7628NN baseband chip is used as a core chip, two peripheral circuit designs are unfolded, and RGB lamp status indication (integrated red lamp green lamp and blue lamp integrated chip) is achieved: the baseband chip circuit main controller module can normally receive the 2.4G low-power Bluetooth beacon broadcast packet data transmitted by the USB expansion control module, the communication network is normal, and the RGB lamp (integrated red light green light blue light integrated chip) is in a breathing state, if the data of the 2.4G low-power Bluetooth beacon broadcast packet transmitted by the USB expansion control module can not be received, the red light is lightened. And if the communication network is disconnected, the colorful lamp is lighted. The MT7628n_38pmt7628NN baseband chip is used as a core chip, and the development of the remaining functions of the peripheral circuit design is not an incentive or an original purpose of the new technical solution, and thus will not be described in detail.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims (10)

1. The utility model provides a multiple route transmission data circuit based on bluetooth gateway, its characterized in that includes MICRO USB adapter, POE power supply circuit, DC-DC buck circuit, DC-DC conversion circuit, low dropout linear voltage regulator, 2.4G low-power consumption bluetooth chip circuit, USB expansion control module, 4G communication network module, baseband chip circuit, POE function module circuit and reset circuit, MICRO USB adapter is supplied with power respectively baseband chip circuit and 4G communication network module after stepping down through DC-DC buck circuit, POE power supply circuit is supplied with power for 2.4G low-power consumption bluetooth chip circuit after the steady voltage through DC-DC conversion circuit, 2.4G low-power consumption bluetooth chip circuit's signal output part is connected with USB expansion control module's signal input part, USB expansion control module's signal output part is connected with 4G communication network module's signal input part and baseband chip circuit's signal input part respectively, baseband chip circuit's signal output part is connected with reset circuit's signal input part, baseband chip circuit and POE function module communication connection.

2. The bluetooth gateway-based multi-path data transmission circuit according to claim 1, wherein the MICRO USB adapter comprises a current limiting switch chip, a key switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second diode, a first transistor, a second transistor, and a third transistor, an IN terminal of the current limiting switch chip is connected to a USB power supply terminal VUSB, an OUT terminal of the current limiting switch chip is connected to a first terminal of the first resistor, an emitter of the first transistor, a first terminal of the third resistor, a source of the first transistor, a second terminal of the first resistor is connected to a cathode of the first diode and a first terminal of the second resistor, a second terminal of the second resistor is connected to a base of the first transistor, a collector of the first transistor is connected to a second terminal of the third resistor, a first terminal of the fourth transistor, a gate of the first transistor and a gate of the second transistor are connected to a drain of the second transistor, a drain of the second transistor is connected to a drain of the second transistor, a drain of the third transistor is connected to a drain of the second transistor, and a drain of the fourth transistor is connected to a drain of the first transistor, and a drain of the third transistor is connected to a drain of the first transistor, respectively; the DC-DC voltage reduction circuit comprises a voltage reduction chip, a sixth resistor and a first inductor, wherein the sixth end of the key switch is connected with the PG end of the voltage reduction chip after being connected with the sixth resistor in series, and the SW end of the voltage reduction chip is connected with the output end of the 3.3V constant current power supply after being connected with the first inductor in series.

3. The bluetooth gateway-based multi-path data transmission circuit according to claim 2, wherein the POE power supply circuit comprises a POE power supply functional module chip, a first capacitor, a second capacitor, a third capacitor, a second inductor, a third inductor, and a fourth inductor, the USB power supply terminal VUSB is respectively connected to a first end of the first capacitor and a first end of the second inductor, the second end of the first capacitor is connected to a VSS end of the POE power supply functional module chip, the second end of the second inductor is respectively connected to a first end of the third inductor and a first end of the second capacitor, the second end of the second capacitor is connected to a first end of the fourth inductor, and the second end of the fourth inductor is connected to a first end of the third capacitor; the DC-DC conversion circuit comprises a first rectifier, a second rectifier, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor and an eleventh capacitor, wherein the first end of the fourth capacitor is respectively connected with the second end of a third capacitor, the first end of the first rectifier, the first end of the sixth capacitor, the first end of the eighth capacitor, the first end of the second rectifier and the first end of the tenth capacitor, the second end of the fourth capacitor is respectively connected with the first end of the fifth capacitor and the third end of the first rectifier, the fourth end of the first rectifier is respectively connected with the second end of the sixth capacitor and the first end of the seventh capacitor, the second end of the first rectifier is respectively connected with the second end of the second rectifier and the second end of the fourth inductor, the third end of the second rectifier is respectively connected with the second end of the eighth capacitor and the first end of the ninth capacitor, the second end of the second rectifier is respectively connected with the fourth end of the fourth capacitor, the fourth end of the fourth capacitor is respectively connected with the fourth end of the fourth capacitor and the eleventh capacitor, and the fourth end of the fourth capacitor is respectively connected with the fourth end of the fourth capacitor.

4. The bluetooth gateway-based multi-path data transmission circuit according to claim 3, wherein the low dropout linear regulator comprises a low dropout linear regulator chip and a seventh resistor, wherein the VIN terminal of the low dropout linear regulator chip is connected to the first terminal of the sixth resistor, and the VOUT terminal of the low dropout linear regulator chip is connected to the power supply output terminal VCC.

5. The bluetooth gateway-based multiple path data transmission circuit according to claim 4, wherein the 2.4G bluetooth low energy chip circuit comprises a bluetooth chip, a front end control chip, a radio frequency filter, an RF radio frequency terminal, a fifth inductor, a sixth inductor, an eighth resistor, and a ninth resistor, wherein the VDD terminal of the bluetooth chip is connected to the power Output VCC, the ANT terminal of the bluetooth chip is sequentially connected in series with the fifth inductor and the eighth resistor and then is connected to the TXRX terminal of the front end control chip, the TXEN terminal of the front end control chip is connected in series with the ninth resistor and then is connected to the P1.04 terminal of the bluetooth chip, the RXEN terminal of the front end control chip is connected in series with the tenth resistor and then is connected to the P1.06 terminal of the bluetooth chip, the ANT terminal of the front end control chip is connected in series with the sixth inductor and then is connected to the Input terminal of the radio frequency filter, and the RXEN terminal of the radio frequency filter is connected in series with the RF Output terminal.

6. The Bluetooth gateway-based multiple path data transmission circuit according to claim 5, wherein the USB expansion control module comprises a USB expansion control chip, a first ESD diode, a second ESD diode and a crystal oscillator, wherein the AVDD end of the USB expansion control chip, the VCC end of the first ESD diode and the VCC end of the second ESD diode are all connected with the 3.3V constant current power supply output end, the DP1 end of the USB expansion control chip is connected with the D-end and the D+ end of the Bluetooth chip, the DMO end of the USB expansion control chip is connected with the I/O_4 end of the first ESD diode, the DPO end of the USB expansion control chip is connected with the I/O_6 end of the first ESD diode, the DM1 end of the USB expansion control chip is connected with the I/O_1 end of the first ESD diode, the X1 end of the USB expansion control chip is connected with the I/O_3 end of the first ESD diode, the OUT end of the USB expansion control chip is connected with the D-end of the Bluetooth chip, the DMO end of the USB expansion control chip is connected with the D-end of the Bluetooth chip, the DPO end of the USB expansion control chip is connected with the I/O_4 end of the first ESD diode, the DM1 end of the USB expansion control chip is connected with the I/O_1 end of the first ESD diode, and the DM1 end of the USB expansion control chip is connected with the I/O_3 end of the first ESD diode, and the DP1 end of the USB expansion control chip is connected with the I/3 end of the I/O3 end of the first ESD diode.

7. The bluetooth gateway-based multi-path data transmission circuit according to claim 6, wherein the 4G communication network module comprises a 4G communication network module, a third ESD diode, a thirteenth resistor, and a fourteenth resistor, wherein the 4G communication network module is connected to a first end of the thirteenth resistor, a second end of the thirteenth resistor is connected to an I/o_6 end of the third ESD diode and a DP2 end of the USB extended control chip, respectively, the 4G communication network module is connected to the first end of the fourteenth resistor, a second end of the fourteenth resistor is connected to an I/o_4 end of the third ESD diode and a DM2 end of the USB extended control chip, respectively, and a usb_vbus end of the 4G communication network module and a VCC end of the third ESD diode are both connected to a VIN end of the low-dropout linear voltage regulator chip.

8. The bluetooth gateway-based multi-path data transmission circuit according to claim 7, wherein the baseband chip circuit comprises a baseband chip, a usb_d+ end and a usb_d-end of the baseband chip are respectively and correspondingly connected with a DP0 end and a DM0 end of the USB expansion control chip, and a VIN end of the baseband chip is respectively connected with a VIN end of the low dropout linear regulator chip and an output end of the 3.3V constant current power supply.

9. The bluetooth gateway-based multiple path data transmission circuit according to claim 8, wherein the POE functional module circuit includes a master control chip and an MJ45 network interface, a td1+ end of the master control chip is connected to a TXOP0 end of the baseband chip, a TD 1-end of the master control chip is connected to a TXON0 end of the baseband chip, a rd+ end of the master control chip is connected to a PXIP end of the baseband chip, a RD-end of the master control chip is connected to a RXIN0 end of the baseband chip, a TX1+ end of the master control chip is connected to a tx+ end of the MJ45 network interface, a TX 1-end of the master control chip is connected to a tx+ end of the MJ45 network interface, a rx+ end of the master control chip is connected to a rx+ end of the MJ45 network interface, and a RX-end of the master control chip is connected to a RX-end of the MJ45 network interface.

10. The bluetooth gateway-based multi-path data transmission circuit according to claim 9, wherein the reset circuit comprises a reset chip, a VDD terminal of the reset chip is connected to a 3.3V constant current power supply output terminal, a wd_in terminal of the reset chip is connected to an i2c_sclk terminal of the baseband chip, and a wd_en terminal of the reset chip is connected to an i2c_sd terminal of the baseband chip.