A bluetooth gateway base station of POE cascade remote power supply

Abstract

The utility model discloses a kind of POE cascading long-distance power supply's bluetooth gateway base station, and PD module, PSE cascading module and interconnection circuit work cooperatively, PD module is converted into 48V low-voltage direct current by upstream high-voltage alternating current, PSE cascading module is powered to subordinate equipment after voltage filtering after processing, protection circuit guarantees safety, interconnection circuit realizes signal transmission, this scheme breaks through traditional bluetooth gateway coverage limit, realizes long-distance cascading power supply, without relying on mains, improve deployment flexibility, reduce material consumption and cost, avoid the problems such as unstable relay power supply, high delay, data loss and ordinary adapter high cost, difficult long-distance deployment, guarantee power supply and communication reliable, reduce system complexity and operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of gateway base station technology, specifically to a Bluetooth gateway base station with POE cascaded long-distance power supply. Background Technology

[0002] In the fields of IoT and industrial automation, Bluetooth technology is widely used for short-range communication between devices due to its low cost and low power consumption. Bluetooth gateways, as the core hub, undertake the crucial function of data aggregation and forwarding from Bluetooth devices. However, existing Bluetooth gateways have many technical limitations in practical deployments: Traditional Bluetooth gateways, limited by signal transmission characteristics, typically have a coverage range of less than 100 meters, making it difficult to meet the communication needs of wide-area scenarios such as large parks and industrial plants. Furthermore, their reliance on mains power severely restricts deployment flexibility, rendering them inoperable in outdoor or remote environments without mains power access. Multi-level cascading solutions adopted to extend coverage require a separate power supply module for each level of device, increasing not only the consumption of cables and power adapters but also significantly raising deployment and maintenance costs. While existing long-range Bluetooth repeater solutions can extend coverage for long-distance communication needs, they face three major problems: First, poor power supply stability, which is easily affected by weather when using renewable energy sources such as solar power, leading to frequent device offline; second, degraded communication performance, as multi-hop repeaters introduce cumulative latency, and each level of forwarding may cause data packet loss, making it difficult to meet the real-time requirements of application scenarios; and third, high system complexity, as the management and coordination of repeater nodes increases the difficulty of operation and maintenance. In addition, the solution of using ordinary power adapters to power distributed Bluetooth devices requires separate power supply lines. In long-distance deployment, not only are the cable costs high, but there are also problems such as high line loss and low power supply efficiency. Furthermore, the decentralized management of adapters further increases the overall cost of ownership. In summary, existing technologies have significant shortcomings in terms of Bluetooth gateway coverage, power supply flexibility, deployment cost, and long-distance communication reliability. There is an urgent need for a Bluetooth gateway solution that can achieve long-distance cascaded power supply, wide coverage, and low deployment cost. Utility Model Content

[0003] In view of this, the main objective of this utility model is to provide a Bluetooth gateway base station with POE cascaded long-distance power supply.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: This utility model embodiment provides a PoE cascaded long-distance power supply Bluetooth gateway base station, including: PD module, PSE cascade module and interconnect circuit; The PD module includes a PD controller, a rectifier circuit, a DC step-down circuit, and a first filter circuit. The PD controller is used to obtain high-voltage AC power from the upstream PSE power supply equipment. The rectifier circuit is used to convert the upstream input high-voltage AC power into high-voltage DC power. The DC step-down circuit is used to convert the high-voltage DC power into 48V low-voltage DC power required by the load. The first filter circuit is used to filter the 48V low-voltage DC power. The PSE cascade module includes a PSE controller and a second filter circuit. The PSE controller is used to receive the 48V voltage processed by the PD module and supply power to the downstream power receiving equipment. The second filter circuit is used to filter the voltage input to the PSE controller. The interconnection circuit includes a PoE input circuit and a PoE output circuit. The PoE input circuit receives the upstream power supply signal through a network cable and transmits it to the PD module. The PoE output circuit transmits the power supply signal output by the PSE cascade module to the downstream device through a network cable.

[0005] In the above scheme, the rectifier circuit includes a first rectifier bridge, a second rectifier bridge, a first fuse, a twelfth capacitor, a second ferrite bead, a third ferrite bead, a thirteenth capacitor, a first TVS diode, an eighth capacitor, a first sensing resistor, a first step resistor, and a 48V DC power output terminal. The second terminal of the first rectifier bridge is connected to the second terminal of the second rectifier bridge. The first terminals of the first and second rectifier bridges jointly output high-voltage DC power, realizing the function of converting the input high-voltage AC power into high-voltage DC power. The first terminal of the first fuse is connected to the first terminal of both the first and second rectifier bridges. The second terminal of the first fuse is connected to the first terminal of the twelfth capacitor and the first terminal of the second ferrite bead. The second terminals of the two capacitors are respectively connected to the second terminals of the first rectifier bridge, the second rectifier bridge, and the first terminal of the third ferrite bead. The second terminal of the third ferrite bead is respectively connected to the first terminal of the thirteenth capacitor, the positive terminal of the first TVS diode, the first terminal of the eighth capacitor, the first terminal of the first graded resistor, the VSS terminal of the PD controller, and the EP terminal of the PD controller. The second terminal of the first graded resistor is connected to the CLS terminal of the PD controller. The second terminal of the second ferrite bead is respectively connected to the 48V DC power supply output terminal, the second terminal of the thirteenth capacitor, the negative terminal of the first TVS diode, the second terminal of the eighth capacitor, the first terminal of the first detection resistor, and the VDD terminal of the PD controller. The second terminal of the first detection resistor is connected to the DEN terminal of the PD controller.

[0006] In the above scheme, the DC buck circuit includes a DC buck chip, a seventh capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a fourth resistor, a fourteenth resistor, a seventh resistor, a third diode, a twenty-seventh capacitor, a sixteenth resistor, and a twenty-fifth capacitor. The VIN terminal of the DC buck chip is connected to the 48V DC power supply output terminal to receive 48V high-voltage DC power. The first terminal of the seventh capacitor is connected to the VIN terminal of the DC buck chip, the first terminal of the ninth capacitor, the first terminal of the tenth capacitor, the first terminal of the eleventh capacitor, and the first terminal of the fourth resistor. The second terminal of the seventh capacitor is connected to the EP terminal of the DC buck chip, the APD terminal of the PD controller, the RTN terminal of the PD controller, the second terminal of the ninth capacitor, and the tenth resistor. The second end of the container, the second end of the eleventh capacitor, the first end of the seventh resistor, the first end of the twenty-seventh capacitor, and the first end of the fourteenth resistor are connected. The second end of the fourteenth resistor is connected to the second end of the fourth resistor and the EN terminal of the DC buck chip. The second end of the seventh resistor is connected to the RT terminal of the DC buck chip. The BOOT terminal of the DC buck chip is connected in series with the sixth capacitor and then connected to the SW terminal of the DC buck chip and the negative terminal of the third diode. The positive terminal of the third diode is connected to the GND terminal of the DC buck chip. The second end of the twenty-seventh capacitor is connected in series with the sixteenth resistor and then connected to the first end of the twenty-fifth capacitor and the COMP terminal of the DC buck chip. The second end of the twenty-fifth capacitor is grounded.

[0007] In the above scheme, the first filter circuit includes a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a fourteenth capacitor, a sixth resistor, and an eighth resistor. The first end of the first inductor is connected to the SW terminal of the DC buck chip. The second end of the first inductor is connected to the first end of the first capacitor, the first end of the second capacitor, the first end of the third capacitor, the first end of the fourth capacitor, the first end of the fifth capacitor, the first end of the fourteenth capacitor, and the first end of the sixth resistor. The second end of the first capacitor is connected to the positive terminal of the third diode, the second end of the second capacitor, the second end of the third capacitor, the second end of the fourth capacitor, the second end of the fifth capacitor, the second end of the fourteenth capacitor, and the first end of the eighth resistor, and then grounded. The second end of the sixth resistor is connected to the second end of the eighth resistor and the FB terminal of the DC buck chip.

[0008] In the above scheme, the second filter circuit includes a first ferrite bead, a thirty-ninth capacitor, a forty-fourth capacitor, and a forty-ninth capacitor. The first end of the first ferrite bead is connected to the VPWR terminal, and its second end is connected to the first end of the thirty-ninth capacitor, the first end of the forty-fourth capacitor, and the first end of the forty-ninth capacitor, respectively. The second ends of the thirty-ninth capacitor, the forty-fourth capacitor, and the forty-ninth capacitor are all grounded.

[0009] In the above scheme, the PSE controller includes a PSE chip, a ninth resistor, an eleventh resistor, a fiftieth capacitor, a tenth resistor, a thirty-first resistor, a thirty-fourth resistor, a fifty-eighth capacitor, a sixty-fifth capacitor, a ninth Zener diode, a fifty-sixth resistor, a tenth Zener diode, a forty-eighth resistor, a fiftieth resistor, a fifty-seventh resistor, and a first MOSFET. The AGND terminal of the PSE chip is connected to the first terminal of the forty-ninth capacitor. The VDD terminal of the PSE chip is connected to the first terminal of the eleventh resistor, the first terminal of the fiftieth capacitor, and the first terminal of the ninth resistor. The second terminal of the eleventh resistor is connected to the second terminal of the fiftieth capacitor, the DGND terminal of the PSE chip, the VEE terminal of the PSE chip, and the SVEE2 terminal of the PSE chip. The second terminal of the tenth resistor is connected to the EN terminal of the PSE chip. The second terminal of the ninth resistor is connected to the first terminal of the tenth resistor and the first MOSFET. The first end of the 34th resistor is connected to the EN_CL5 terminal of the PSE chip. The first end of the 65th capacitor is connected to the OUT1 terminal of the PSE chip. The second end of the 65th capacitor is connected to the control terminal of the first MOSFET and the negative terminal of the 10th Zener diode. The positive terminal of the 10th Zener diode is connected to the first end of the 58th capacitor, the first end of the 65th capacitor, and the positive terminal of the 9th Zener diode. The second end of the 58th capacitor is connected to the first end of the 65th capacitor and the negative terminal of the 9th Zener diode. The first end of the 50th resistor is connected to the source of the first MOSFET, the first end of the 48th resistor, and the SENSE1 terminal of the PSE chip. The second end of the 48th resistor is connected to the first end of the 57th resistor and the drain of the first MOSFET. The second end of the 57th resistor is connected to the GATE1 terminal of the PSE chip.

[0010] In the above scheme, the PoE input circuit includes an RJ45 network port terminal, a first 100 Mbps network port transformer, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-ninth resistor, a thirtieth resistor, a twenty-ninth capacitor, a thirty-fifth capacitor, a thirty-third capacitor, a thirty-fourth capacitor, a fifty-third resistor, a fifty-fourth resistor, a fifty-first resistor, a fifty-fifth resistor, a forty-second capacitor, a seventy-fifth capacitor, an eighty-eighth capacitor, an eighty-ninth capacitor, and a thirty-second resistor. The TX+ terminal of the RJ45 network port terminal is connected to the TX1+ terminal of the first 100 Mbps network port transformer, and the TX... The RJ45 network port terminal is connected to the TXCT terminal of the first 100 Mbps network port transformer. The RJ45 network port terminal's RX+ terminal is connected to the RX+ terminal of the first 100 Mbps network port transformer. The RJ45 network port terminal's G+ terminal is connected to the LINK0 terminal. The RJ45 network port terminal's G- terminal is connected to the G-IN terminal and the first terminal of the 32nd resistor. The second terminal of the 32nd resistor is grounded. The first terminal of the 53rd resistor is connected to the TXCT terminal of the first 100 Mbps network port transformer. The second terminal of the 53rd resistor is connected to the first terminal of the 42nd capacitor. The second terminal of the 42nd capacitor is connected to the first terminals of the 88th, 89th, and 75th capacitors, and then grounded. The second terminal of the 18th capacitor is connected in series with the 54th resistor and then connected to the POE+ terminal of the RJ45 network port. The second terminal of the 89th capacitor is connected in series with the 51st resistor and then connected to the RXCT terminal of the first 100Mbps network port transformer. The second terminal of the 75th capacitor is connected in series with the 55th resistor and then connected to the POE- terminal of the RJ45 network port. The TD1+ terminal of the first 100Mbps network port transformer is connected to the first terminal of the 29th resistor and the first terminal of the 24th resistor. The TCT1 terminal of the first 100Mbps network port transformer is connected in series with the 33rd capacitor and then grounded. The RCT terminal of the first 100Mbps network port transformer is connected in series with the 34th capacitor and then grounded. The TD- terminal of the first 100Mbps network port transformer is connected to the 30th resistor. The first terminal of the first rectifier bridge is connected to the first terminal of the 25th resistor. The RD+ terminal of the first 100Mbps Ethernet transformer is connected to the first terminal of the 26th resistor and the first terminal of the 22nd resistor. The RD- terminal of the first 100Mbps Ethernet transformer is connected to the first terminal of the 27th resistor and the first terminal of the 23rd resistor. The second terminal of the 26th resistor is connected to the second terminal of the 27th resistor and the first terminal of the 29th capacitor. The second terminal of the 29th resistor is connected to the second terminal of the 30th resistor and the first terminal of the 35th capacitor. The second terminals of the 29th and 35th capacitors are both grounded. The third terminal of the first rectifier bridge is connected to the POE+ terminal of the RJ45 Ethernet port.The fourth terminal of the first rectifier bridge is connected to the POE- terminal of the RJ45 network port, the fourth terminal of the second rectifier bridge is connected to the POE1- terminal of the RJ45 network port, and the third terminal of the second rectifier bridge is connected to the POE1+ terminal of the RJ45 network port.

[0011] In the above scheme, the PoE output circuit includes an RJ45 terminal, a second 100 Mbps Ethernet transformer, a sixty-eighth capacitor, a sixty-ninth capacitor, a sixty-seventh resistor, a seventy-ninth resistor, a seventy-first resistor, a seventy-second capacitor, a seventy-third capacitor, a sixtyth resistor, a sixty-first resistor, a seventy-seventh capacitor, a seventy-third capacitor, a fifty-ninth resistor, a sixty-second resistor, a seventy-eighth capacitor, a seventy-sixth capacitor, and a sixty-third resistor. The TX+ terminal of the RJ45 terminal is connected to the TX1+ terminal of the second 100 Mbps Ethernet transformer, and the TX- terminal of the RJ45 terminal is connected to the TX1- terminal of the second 100 Mbps Ethernet transformer. The RX+ terminal of the RJ45 terminal... The RJ45 terminal is connected to the RX+ terminal of the second 100Mbps Ethernet transformer. The RJ45 terminal's RX- terminal is also connected to the RX- terminal of the second 100Mbps Ethernet transformer. The RJ45 terminal's G+ terminal is connected to the G+OUT terminal, and the RJ45 terminal's G- terminal is connected to the G-OUT terminal. The first terminal of the sixty-third resistor is connected to the G- terminal of the RJ45 terminal, and the second terminal of the sixty-third resistor is grounded. The TCT1 terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the sixty-eighth capacitor. The RCT terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the sixty-ninth capacitor. The second terminal of the sixty-eighth capacitor is connected to the second terminal of the sixty-ninth capacitor and then grounded. The TD terminal of the second 100Mbps Ethernet transformer... The 1+ terminal is connected to the first terminal of the sixty-seventh resistor; the RD+ terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the sixty-ninth resistor; the TD1- terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the seventieth resistor; the RD- terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the seventy-first resistor; the second terminal of the sixty-seventh resistor is connected to the first terminal of the seventy-second capacitor and the second terminal of the seventy-third resistor, respectively; the second terminal of the seventy-second capacitor is grounded; the second terminal of the sixty-ninth resistor is connected to the first terminal of the seventy-third capacitor and the second terminal of the seventy-first resistor, respectively; the second terminal of the seventy-third capacitor is grounded; the TXCT terminal of the second 100Mbps Ethernet transformer is connected to... The first terminal of the 60th resistor is connected; the PES+ terminal of the RJ45 terminal is connected to the first terminal of the 61st resistor; the RXCT terminal of the 200Mbps Ethernet transformer is connected to the first terminal of the 59th resistor; the OUT1- terminal of the RJ45 terminal is connected to the first terminal of the 62nd resistor; the second terminal of the 60th resistor is connected to the first terminal of the 77th capacitor; the second terminal of the 61st resistor is connected to the first terminal of the 70th capacitor; the second terminal of the 77th capacitor is connected to the second terminal of the 70th capacitor and then grounded; the second terminal of the 59th resistor is connected to the first terminal of the 78th capacitor; and the second terminal of the 62nd resistor is connected to the first terminal of the 76th capacitor.The second terminal of the seventy-eighth capacitor is connected to the second terminal of the seventy-sixth capacitor and then grounded.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a PD module, a PSE cascade module, and an interconnect circuit to work collaboratively. The PD module converts upstream high-voltage AC power into 48V low-voltage DC power. The PSE cascade module filters the processed voltage before supplying power to downstream devices. A protection circuit ensures safety, and the interconnect circuit enables signal transmission. This solution overcomes the coverage limitations of traditional Bluetooth gateways, enabling long-distance cascaded power supply without relying on mains power. This improves deployment flexibility, reduces material consumption and costs, and avoids problems such as unstable relay power supply, high latency, data loss, and the high cost and difficulty of long-distance deployment of ordinary adapters. It ensures reliable power supply and communication, and reduces system complexity and maintenance difficulty. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this invention, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a Bluetooth gateway base station with POE cascaded long-distance power supply according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the PD module in a Bluetooth gateway base station with POE cascaded long-distance power supply according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the PSE cascade module in a Bluetooth gateway base station with POE cascaded long-distance power supply according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the POE input circuit in a POE-cascaded long-distance power supply Bluetooth gateway base station according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the POE output circuit in a Bluetooth gateway base station with POE cascaded long-distance power supply, as described in an embodiment of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that the terms "first", "second", "third", etc. are only for the convenience of distinguishing and describing the same components, and do not indicate or imply the number of the components referred to. They should not be construed as limitations on this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0016] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0017] This utility model embodiment provides a PoE cascaded long-distance power supply Bluetooth gateway base station, such as... Figure 1-5 As shown, it includes: PD module, PSE cascade module and interconnect circuit; The PD module includes a PD controller U2, a rectifier circuit, a DC step-down circuit, and a first filter circuit. The PD controller is used to obtain high-voltage AC power from the upstream PSE power supply equipment. The rectifier circuit is used to convert the upstream input high-voltage AC power into high-voltage DC power. The DC step-down circuit is used to convert the high-voltage DC power into 48V low-voltage DC power required by the load. The first filter circuit is used to filter the 48V low-voltage DC power. The PSE cascade module includes a PSE controller, a second filter circuit, and a protection circuit. The PSE controller is used to receive the 48V voltage processed by the PD module and supply power to the downstream power receiving equipment. The second filter circuit is used to filter the voltage input to the PSE controller. The protection circuit is used to implement overcurrent and undervoltage protection. The interconnection circuit includes a PoE input circuit and a PoE output circuit. The PoE input circuit receives the upstream power supply signal through a network cable and transmits it to the PD module. The PoE output circuit transmits the power supply signal output by the PSE cascade module to the downstream device through a network cable.

[0018] like Figure 1 and Figure 2As shown, the rectifier circuit includes a first rectifier bridge BR1, a second rectifier bridge BR2, a first fuse F1, a twelfth capacitor C12, a second ferrite bead FB2, a third ferrite bead FB3, a thirteenth capacitor C13, a first TVS diode D1, an eighth capacitor C8, a first sensing resistor R3, a first step resistor R5, and a 48V DC power output terminal. The second terminal of the first rectifier bridge BR1 is connected to the second terminal of the second rectifier bridge BR2. The first terminals of the first rectifier bridge BR1 and the second rectifier bridge BR2 together output high-voltage DC power, realizing the function of converting the input high-voltage AC power into high-voltage DC power. The first terminal of the first fuse F1 is connected to the first terminal of the first rectifier bridge BR1 and the first terminal of the second rectifier bridge BR2. The second terminal of the first fuse F1 is connected to the first terminal of the twelfth capacitor C12 and the first terminal of the second ferrite bead FB2. The second terminal of the 12th capacitor C12 is connected to the second terminal of the first rectifier bridge BR1, the second terminal of the second rectifier bridge BR2, and the first terminal of the third ferrite bead FB3. The second terminal of the third ferrite bead FB3 is connected to the first terminal of the 13th capacitor C13, the positive terminal of the first TVS diode D1, the first terminal of the 8th capacitor C8, the first terminal of the first grade resistor R5, the VSS terminal of the PD controller U2, and the EP terminal of the PD controller U2. The second terminal of the first grade resistor R5 is connected to the CLS terminal of the PD controller U2. The second terminal of the second ferrite bead FB2 is connected to the 48V DC power supply output terminal, the second terminal of the 13th capacitor C13, the negative terminal of the first TVS diode D1, the second terminal of the 8th capacitor C8, the first terminal of the first detection resistor R3, and the VDD terminal of the PD controller U2. The second terminal of the first detection resistor R3 is connected to the DEN terminal of the PD controller U2.

[0019] like Figure 1 and Figure 2As shown, the DC buck circuit includes a DC buck chip U1, a seventh capacitor C7, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a fourth resistor R4, a fourteenth resistor R14, a seventh resistor R7, a third diode D3, a twenty-seventh capacitor C27, a sixteenth resistor R16, and a twenty-fifth capacitor C25. The VIN terminal of the DC buck chip U1 is connected to the 48V DC power supply output terminal to receive 48V high-voltage DC power. The first terminal of the seventh capacitor C7 is connected to the VIN terminal of the DC buck chip U1, the first terminal of the ninth capacitor C9, the first terminal of the tenth capacitor C10, the first terminal of the eleventh capacitor C11, and the first terminal of the fourth resistor R4. The second terminal of the seventh capacitor C7 is connected to the EP terminal of the DC buck chip U1, the APD terminal of the PD controller U2, the RTN terminal of the PD controller U2, the second terminal of the ninth capacitor C9, the tenth resistor R16, and the twenty-fifth capacitor C25. The second terminal of capacitor C10, the second terminal of eleventh capacitor C11, the first terminal of seventh resistor R7, the first terminal of twenty-seventh capacitor C27, and the first terminal of fourteenth resistor R14 are connected. The second terminal of fourteenth resistor R14 is connected to the second terminal of fourth resistor R4 and the EN terminal of DC buck chip U1. The second terminal of seventh resistor R7 is connected to the RT terminal of DC buck chip U1. The BOOT terminal of DC buck chip U1 is connected in series with sixth capacitor C6 and then connected to the SW terminal of DC buck chip U1 and the negative terminal of third diode D3. The positive terminal of third diode D3 is connected to the GND terminal of DC buck chip U1. The second terminal of twenty-seventh capacitor C27 is connected in series with sixteenth resistor R16 and then connected to the first terminal of twenty-fifth capacitor C25 and the COMP terminal of DC buck chip U1. The second terminal of twenty-fifth capacitor C25 is grounded.

[0020] like Figure 1 and Figure 2As shown, the first filter circuit includes a first inductor L1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a fourteenth capacitor C14, a sixth resistor R6, and an eighth resistor R8. The first end of the first inductor L1 is connected to the SW terminal of the DC buck chip U1. The second end of the first inductor L1 is connected to the first ends of the first capacitors C1, C2, C3, C4, C5, C14, and R6, respectively. The second end of the first capacitor C1 is connected to the positive terminal of the third diode D3, the second end of the second capacitors C2, C3, C4, C5, C14, and R8, respectively, and then grounded. The second end of the sixth resistor R6 is connected to the second end of the eighth resistor R8 and the FB terminal of the DC buck chip U1, respectively.

[0021] like Figure 1 and Figure 3 As shown, the second filter circuit includes a first ferrite bead FB1, a thirty-ninth capacitor C39, a forty-fourth capacitor C44, and a forty-ninth capacitor C49. The first end of the first ferrite bead FB1 is connected to the VPWR terminal, and its second end is connected to the first end of the thirty-ninth capacitor C39, the first end of the forty-fourth capacitor C44, and the first end of the forty-ninth capacitor C49, respectively. The second ends of the thirty-ninth capacitor C39, the forty-fourth capacitor C44, and the forty-ninth capacitor C49 are all grounded.

[0022] like Figure 1 and Figure 3As shown, the PSE controller includes a PSE chip U12, a ninth resistor R9, an eleventh resistor R11, a fiftieth capacitor C50, a tenth resistor R10, a thirty-first resistor R31, a thirty-fourth resistor R34, a fifty-eighth capacitor C58, a sixty-fifth capacitor C65, a ninth Zener diode D9, a fifty-sixth resistor R56, a tenth Zener diode D10, a forty-eighth resistor R48, a fiftieth resistor R50, a fifty-seventh resistor R57, and a first MOSFET Q1. The AGND terminal of the PSE chip U12 is connected to the forty-ninth capacitor C4. The first terminal of resistor R11 is connected to the first terminal of the eleventh resistor R11, the first terminal of the fiftieth capacitor C50, and the first terminal of the ninth resistor R9. The second terminal of the eleventh resistor R11 is connected to the second terminal of the fiftieth capacitor C50, the DGND terminal of the PSE chip U12, the VEE terminal of the PSE chip U12, and the SVEE2 terminal of the PSE chip U12. The second terminal of the tenth resistor R10 is connected to the EN terminal of the PSE chip U12. The second terminal of the ninth resistor R9 is connected to the tenth resistor R10. The first terminal of resistor R10 is connected to the first terminal of resistor R34. The second terminal of resistor R34 is connected to the EN_CL5 terminal of PSE chip U12. The first terminal of capacitor C65 is connected to the OUT1 terminal of PSE chip U12. The second terminal of capacitor C65 is connected to the control terminal of MOSFET Q1 and the negative terminal of Zener diode D10. The positive terminal of Zener diode D10 is connected to the first terminal of capacitor C58, the first terminal of capacitor C65, and the positive terminal of Zener diode D9. The terminals are connected as follows: the second terminal of the fifty-eighth capacitor C58 is connected to the first terminal of the sixty-fifth capacitor C65 and the negative terminal of the ninth Zener diode D9; the first terminal of the fiftieth resistor R50 is connected to the source of the first MOSFET Q1, the first terminal of the forty-eighth resistor R48 and the SENSE1 terminal of the PSE chip U12; the second terminal of the forty-eighth resistor R48 is connected to the first terminal of the fifty-seventh resistor R57 and the drain of the first MOSFET Q1; and the second terminal of the fifty-seventh resistor R57 is connected to the GATE1 terminal of the PSE chip U12.

[0023] like Figures 1-4As shown, the PoE input circuit includes an RJ45 network port terminal J5, a first 100Mbps network port transformer U13, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-ninth resistor R29, a thirtieth resistor R30, a twenty-ninth capacitor C29, a thirty-fifth capacitor C35, a thirty-third capacitor C33, a thirty-fourth capacitor C34, a fifty-third resistor R53, a fifty-fourth resistor R54, a fifty-first resistor R51, a fifty-fifth resistor R55, a forty-second capacitor C42, a seventy-fifth capacitor C75, an eighty-eighth capacitor C88, and an eighth... Nineteen capacitors C89 and thirty-second resistor R32 are used. The TX+ terminal of the RJ45 network port terminal J5 is connected to the TX1+ terminal of the first 100Mbps network port transformer U13. The TX- terminal of the RJ45 network port terminal J5 is connected to the TXCT terminal of the first 100Mbps network port transformer U13. The RX+ terminal of the RJ45 network port terminal J5 is connected to the RX+ terminal of the first 100Mbps network port transformer U13. The G+ terminal of the RJ45 network port terminal J5 is connected to the LINK0 terminal. The G- terminal of the RJ45 network port terminal J5 is connected to the G-IN terminal and the first terminal of the thirty-second resistor R32. The second terminal of the thirty-second resistor R32 is grounded. The first terminal of the fifty-third resistor R53 is connected to the first 100Mbps network port transformer U13. The TXCT terminal of capacitor C13 is connected. The second terminal of the fifty-third resistor R53 is connected to the first terminal of the forty-second capacitor C42. The second terminal of the forty-second capacitor C42 is connected to the first terminals of the eighty-eighth capacitor C88, the eighty-ninth capacitor C89, and the seventy-fifth capacitor C75, respectively, and then grounded. The second terminal of the eighty-eighth capacitor C88 is connected in series with the fifty-fourth resistor R54 and then connected to the POE+ terminal of the RJ45 network port terminal J5. The second terminal of the eighty-ninth capacitor C89 is connected in series with the fifty-first resistor R51 and then connected to the RXCT terminal of the first 100 Mbps network port transformer U13. The second terminal of the seventy-fifth capacitor C75 is connected in series with the fifty-fifth resistor R55 and then connected to the RJ45 network port terminal J5. The POE- terminal of the network port terminal J5 is connected. The TD1+ terminal of the first 100Mbps network port transformer U13 is connected to the first terminal of the twenty-ninth resistor R29 and the first terminal of the twenty-fourth resistor R24. The TCT1 terminal of the first 100Mbps network port transformer U13 is connected to ground in series with the thirty-third capacitor C33. The RCT terminal of the first 100Mbps network port transformer U13 is connected to ground in series with the thirty-fourth capacitor C34. The TD1- terminal of the first 100Mbps network port transformer U13 is connected to the first terminal of the thirty-ninth resistor R30 and the first terminal of the twenty-fifth resistor R25. The RD+ terminal of the first 100Mbps network port transformer U13 is connected to the first terminal of the twenty-sixth resistor R26 and the first terminal of the twenty-second resistor R22.The RD- terminal of the first 100Mbps Ethernet transformer U13 is connected to the first terminal of the 27th resistor R27 and the first terminal of the 23rd resistor R23. The second terminal of the 26th resistor R26 is connected to the second terminal of the 27th resistor R27 and the first terminal of the 29th capacitor C29. The second terminal of the 29th resistor R29 is connected to the second terminal of the 30th resistor R30 and the first terminal of the 35th capacitor C35. The second terminals of the 29th capacitor C29 and the 35th capacitor C35 are both grounded. The first rectifier bridge BR1... The fourth terminal of the first rectifier bridge BR1 is connected to the POE- terminal of the RJ45 network port J5. The third terminal of the second rectifier bridge BR2 is connected to the POE1- terminal of the RJ45 network port J5. The third terminal of the second rectifier bridge BR2 is connected to the POE1+ terminal of the RJ45 network port J5. The second terminals of the 22nd resistor R22, the 23rd resistor R23, the 24th resistor R24, and the 25th resistor R25 are respectively connected to an external switch.

[0024] like Figures 1-5As shown, the PoE output circuit includes an RJ45 terminal J2, a second 100Mbps Ethernet transformer U14, a sixty-eighth capacitor C68, a sixty-ninth capacitor C69, a sixty-seventh resistor R67, a seventieth resistor R70, a sixty-ninth resistor R69, a seventy-first resistor R71, a seventy-second capacitor C72, a seventy-third capacitor C73, a sixtieth resistor R60, a sixty-first resistor R61, a seventy-seventh capacitor C77, a seventyth capacitor C70, a fifty-ninth resistor R59, a sixty-second resistor R62, a seventy-eighth capacitor C78, ​​a seventy-sixth capacitor C76, and a sixty-third resistor R63. The TX+ terminal of the RJ45 terminal J2 is connected to the second 100Mbps Ethernet transformer U14. The TX1+ terminal of transformer U14 is connected; the TX- terminal of RJ45 terminal J2 is connected to the TX1- terminal of the second 100Mbps Ethernet transformer U14; the RX+ terminal of RJ45 terminal J2 is connected to the RX+ terminal of the second 100Mbps Ethernet transformer U14; the RX- terminal of RJ45 terminal J2 is connected to the RX- terminal of the second 100Mbps Ethernet transformer U14; the G+ terminal of RJ45 terminal J2 is connected to the G+OUT terminal; the G- terminal of RJ45 terminal J2 is connected to the G-OUT terminal; the first terminal of the sixty-third resistor R63 is connected to the G- terminal of RJ45 terminal J2; the second terminal of the sixty-third resistor R63 is grounded; and the TCT1 terminal of the second 100Mbps Ethernet transformer U14 is connected to the... The first terminal of capacitor C68 (sixty-eighth capacitor) is connected to the ground. The RCT terminal of the second 100Mbps Ethernet transformer U14 is connected to the first terminal of capacitor C69 (sixty-ninth capacitor). The second terminal of capacitor C68 is connected to the ground after being grounded. The TD1+ terminal of the second 100Mbps Ethernet transformer U14 is connected to the first terminal of resistor R67 (sixty-seventh resistor). The RD+ terminal of the second 100Mbps Ethernet transformer U14 is connected to the first terminal of resistor R69 (sixty-ninth resistor). The TD1- terminal of the second 100Mbps Ethernet transformer U14 is connected to the first terminal of resistor R70 (seventieth resistor). The RD- terminal of the second 100Mbps Ethernet transformer U14 is connected to the first terminal of resistor R71 (seventh resistor). The second terminal of resistor R67 (seventeenth) is connected to the first terminal of capacitor C72 (seventy-second) and resistor R70 (seventieth), respectively. The second terminal of capacitor C72 (seventy-second) is grounded. The second terminal of resistor R69 (sixty-ninth) is connected to the first terminal of capacitor C73 (seventy-third) and resistor R71 (seventy-first), respectively. The second terminal of capacitor C73 (seventy-third) is grounded. The TXCT terminal of transformer U14 (second 100Mbps Ethernet port) is connected to the first terminal of resistor R60 (sixtieth). The PES+ terminal of RJ45 terminal J2 is connected to the first terminal of resistor R61 (sixty-first). The RXCT terminal of transformer U14 (second 100Mbps Ethernet port) is connected to the first terminal of resistor R59 (fifty-ninth).The OUT1- terminal of RJ45 terminal J2 is connected to the first terminal of the sixty-second resistor R62; the second terminal of the sixtieth resistor R60 is connected to the first terminal of the seventy-seventh capacitor C77; the second terminal of the sixty-first resistor R61 is connected to the first terminal of the seventieth capacitor C70; the second terminal of the seventy-seventh capacitor C77 is connected to the second terminal of the seventieth capacitor C70 and then grounded; the second terminal of the fifty-ninth resistor R59 is connected to the first terminal of the seventy-eighth capacitor C78; the second terminal of the sixty-second resistor R62 is connected to the first terminal of the seventy-sixth capacitor C76; the second terminal of the seventy-eighth capacitor C78 is connected to the second terminal of the seventy-sixth capacitor C76 and then grounded.

[0025] The working principle of this utility model is as follows: like Figure 1-5 As shown, the working principle of this solution is based on the coordinated operation of the PD module, PSE cascade module, and interconnection circuit to achieve integrated functions of long-distance cascaded power supply and Bluetooth data transmission. The specific process is as follows: The power supply signal from the upstream PSE power supply equipment is transmitted to the PoE input circuit of the interconnect circuit via the network cable. After being received by the RJ45 network port terminal J5, the data transmission and high voltage isolation are completed by the first 100 Mbps network port transformer U13. At the same time, impedance matching is achieved through the Bob Smith circuit (composed of the fifty-third resistor R53, the fifty-fourth resistor R54, etc.) to ensure stable signal transmission to the PD module. In the PD module, the PD controller U2 first receives the upstream high-voltage AC power, which is then converted into high-voltage DC power by a rectifier circuit consisting of the first rectifier bridge BR1 and the second rectifier bridge BR2. The first fuse F1 provides overcurrent protection during this process. The high-voltage DC power is then filtered sequentially by the second ferrite bead FB2 and the third ferrite bead FB3, and further stabilized by the twelfth capacitor C12 and the thirteenth capacitor C13 before being input to the DC buck circuit. The DC buck chip U1 receives the 48V high-voltage DC power and uses an external circuit consisting of the seventh capacitor C7 and the ninth capacitor C9 to perform a step-down conversion, adjusting the high-voltage DC power to the 48V low-voltage DC power required by the load. This is then filtered by the first filter circuit (composed of the first inductor L1 and the first capacitor C1), outputting a stable low-voltage DC power supply. The processed 48V voltage is transmitted to the PSE cascade module, where it is first filtered again by the second filter circuit (composed of the first ferrite bead FB1 and the thirty-ninth capacitor C39, etc.) to remove voltage fluctuation interference. After receiving the stable voltage, the PSE chip U12 controls the power supply through the peripheral circuit composed of the ninth resistor R9, the eleventh resistor R11, etc., driving the first MOSFET Q1 to conduct and transmit the voltage to the next-level power receiving device. During this process, the protection circuit detects the current through the fiftieth resistor R50 and clamps the voltage through the ninth Zener diode D9 to achieve overcurrent and undervoltage protection, ensuring the safety of the cascaded power supply.

[0026] Ultimately, the power supply signal processed by the PSE cascade module is transmitted to the next-level device via the PoE output circuit: the second 100Mbps Ethernet port transformer U14 completes the isolated transmission of data and power signals, and the RJ45 terminal J2 sends the signal to the next-level device via a network cable. Simultaneously, the network port adapter can be flexibly configured with different cable routing options to achieve long-distance cascade deployment. The entire process does not rely on mains power; it simultaneously achieves power supply and data transmission via network cable, overcoming the coverage limitations and power supply bottlenecks of traditional Bluetooth gateways.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A PoE-cascaded long-range power supply Bluetooth gateway base station, characterized in that, include: PD module, PSE cascade module and interconnect circuit; The PD module includes a PD controller, a rectifier circuit, a DC step-down circuit, and a first filter circuit. The PD controller is used to obtain high-voltage AC power from the upstream PSE power supply equipment. The rectifier circuit is used to convert the upstream input high-voltage AC power into high-voltage DC power. The DC step-down circuit is used to convert the high-voltage DC power into 48V low-voltage DC power required by the load. The first filter circuit is used to filter the 48V low-voltage DC power. The PSE cascade module includes a PSE controller and a second filter circuit. The PSE controller is used to receive the 48V voltage processed by the PD module and supply power to the downstream power receiving equipment. The second filter circuit is used to filter the voltage input to the PSE controller. The interconnection circuit includes a PoE input circuit and a PoE output circuit. The PoE input circuit receives the upstream power supply signal through a network cable and transmits it to the PD module. The PoE output circuit transmits the power supply signal output by the PSE cascade module to the downstream device through a network cable.

2. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 1, characterized in that, The rectifier circuit includes a first rectifier bridge, a second rectifier bridge, a first fuse, a twelfth capacitor, a second ferrite bead, a third ferrite bead, a thirteenth capacitor, a first TVS diode, an eighth capacitor, a first sensing resistor, a first step resistor, and a 48V DC power output terminal. The second terminal of the first rectifier bridge is connected to the second terminal of the second rectifier bridge. The first terminals of the first and second rectifier bridges jointly output high-voltage DC power, realizing the function of converting the input high-voltage AC power into high-voltage DC power. The first terminal of the first fuse is connected to the first terminal of both the first and second rectifier bridges. The second terminal of the first fuse is connected to the first terminal of the twelfth capacitor and the first terminal of the second ferrite bead. The second end of the device is connected to the second end of the first rectifier bridge, the second end of the second rectifier bridge, and the first end of the third ferrite bead. The second end of the third ferrite bead is connected to the first end of the thirteenth capacitor, the positive terminal of the first TVS diode, the first end of the eighth capacitor, the first end of the first graded resistor, the VSS terminal of the PD controller, and the EP terminal of the PD controller. The second end of the first graded resistor is connected to the CLS terminal of the PD controller. The second end of the second ferrite bead is connected to the 48V DC power supply output terminal, the second end of the thirteenth capacitor, the negative terminal of the first TVS diode, the second end of the eighth capacitor, the first end of the first detection resistor, and the VDD terminal of the PD controller. The second end of the first detection resistor is connected to the DEN terminal of the PD controller.

3. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 2, characterized in that, The DC buck circuit includes a DC buck chip, a seventh capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a fourth resistor, a fourteenth resistor, a seventh resistor, a third diode, a twenty-seventh capacitor, a sixteenth resistor, and a twenty-fifth capacitor. The VIN terminal of the DC buck chip is connected to the 48V DC power output terminal to receive 48V high-voltage DC power. The first terminal of the seventh capacitor is connected to the VIN terminal of the DC buck chip, the first terminal of the ninth capacitor, the first terminal of the tenth capacitor, the first terminal of the eleventh capacitor, and the first terminal of the fourth resistor. The second terminal of the seventh capacitor is connected to the EP terminal of the DC buck chip, the APD terminal of the PD controller, the RTN terminal of the PD controller, the second terminal of the ninth capacitor, and the second terminal of the tenth capacitor. The second terminal, the second terminal of the eleventh capacitor, the first terminal of the seventh resistor, the first terminal of the twenty-seventh capacitor, and the first terminal of the fourteenth resistor are connected. The second terminal of the fourteenth resistor is connected to the second terminal of the fourth resistor and the EN terminal of the DC buck chip. The second terminal of the seventh resistor is connected to the RT terminal of the DC buck chip. The BOOT terminal of the DC buck chip is connected in series with the sixth capacitor and then connected to the SW terminal of the DC buck chip and the negative terminal of the third diode. The positive terminal of the third diode is connected to the GND terminal of the DC buck chip. The second terminal of the twenty-seventh capacitor is connected in series with the sixteenth resistor and then connected to the first terminal of the twenty-fifth capacitor and the COMP terminal of the DC buck chip. The second terminal of the twenty-fifth capacitor is grounded.

4. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 3, characterized in that, The first filter circuit includes a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a fourteenth capacitor, a sixth resistor, and an eighth resistor. The first end of the first inductor is connected to the SW terminal of the DC buck chip. The second end of the first inductor is connected to the first end of the first capacitor, the first end of the second capacitor, the first end of the third capacitor, the first end of the fourth capacitor, the first end of the fifth capacitor, the first end of the fourteenth capacitor, and the first end of the sixth resistor. The second end of the first capacitor is connected to the positive terminal of the third diode, the second end of the second capacitor, the second end of the third capacitor, the second end of the fourth capacitor, the second end of the fifth capacitor, the second end of the fourteenth capacitor, and the first end of the eighth resistor, and then grounded. The second end of the sixth resistor is connected to the second end of the eighth resistor and the FB terminal of the DC buck chip.

5. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 4, characterized in that, The second filter circuit includes a first ferrite bead, a thirty-ninth capacitor, a forty-fourth capacitor, and a forty-ninth capacitor. The first end of the first ferrite bead is connected to the VPWR terminal, and its second end is connected to the first end of the thirty-ninth capacitor, the first end of the forty-fourth capacitor, and the first end of the forty-ninth capacitor, respectively. The second ends of the thirty-ninth capacitor, the forty-fourth capacitor, and the forty-ninth capacitor are all grounded.

6. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 5, characterized in that, The PSE controller includes a PSE chip, a ninth resistor, an eleventh resistor, a fiftieth capacitor, a tenth resistor, a thirty-first resistor, a thirty-fourth resistor, a fifty-eighth capacitor, a sixty-fifth capacitor, a ninth Zener diode, a fifty-sixth resistor, a tenth Zener diode, a forty-eighth resistor, a fiftieth resistor, a fifty-seventh resistor, and a first MOSFET. The AGND terminal of the PSE chip is connected to the first terminal of the forty-ninth capacitor. The VDD terminal of the PSE chip is connected to the first terminals of the eleventh resistor, the fiftieth capacitor, and the ninth resistor. The second terminal of the eleventh resistor is connected to the second terminal of the fiftieth capacitor, the DGND terminal of the PSE chip, the VEE terminal of the PSE chip, and the SVEE2 terminal of the PSE chip. The second terminal of the tenth resistor is connected to the EN terminal of the PSE chip. The second terminal of the ninth resistor is connected to the first terminal of the tenth resistor and the thirty-fourth resistor. The first end of the resistor is connected to the PSE chip. The second end of the thirty-fourth resistor is connected to the EN_CL5 terminal of the PSE chip. The first end of the sixty-fifth capacitor is connected to the OUT1 terminal of the PSE chip. The second end of the sixty-fifth capacitor is connected to the control terminal of the first MOSFET and the negative terminal of the tenth Zener diode. The positive terminal of the tenth Zener diode is connected to the first end of the fifty-eighth capacitor, the first end of the sixty-fifth capacitor, and the positive terminal of the ninth Zener diode. The second end of the fifty-eighth capacitor is connected to the first end of the sixty-fifth capacitor and the negative terminal of the ninth Zener diode. The first end of the fiftieth resistor is connected to the source of the first MOSFET, the first end of the forty-eighth resistor, and the SENSE1 terminal of the PSE chip. The second end of the forty-eighth resistor is connected to the first end of the fifty-seventh resistor and the drain of the first MOSFET. The second end of the fifty-seventh resistor is connected to the GATE1 terminal of the PSE chip.

7. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 6, characterized in that, The PoE input circuit includes an RJ45 network port terminal, a first 100Mbps network port transformer, a 22nd resistor, a 23rd resistor, a 24th resistor, a 25th resistor, a 26th resistor, a 27th resistor, a 29th resistor, a 30th resistor, a 29th capacitor, a 35th capacitor, a 33rd capacitor, a 34th capacitor, a 53rd resistor, a 54th resistor, a 51st resistor, a 55th resistor, a 42nd capacitor, a 75th capacitor, an 88th capacitor, an 89th capacitor, and a 32nd resistor. The TX+ terminal of the RJ45 network port terminal is connected to the TX1+ terminal of the first 100Mbps network port transformer, and the TX- terminal of the RJ45 network port terminal is connected to the first 100Mbps network port transformer. The TXCT terminal of the 100 Mbps Ethernet transformer is connected. The RX+ terminal of the RJ45 Ethernet terminal is connected to the RX+ terminal of the first 100 Mbps Ethernet transformer. The G+ terminal of the RJ45 Ethernet terminal is connected to the LINK0 terminal. The G- terminal of the RJ45 Ethernet terminal is connected to the G-IN terminal and the first terminal of the 32nd resistor. The second terminal of the 32nd resistor is grounded. The first terminal of the 53rd resistor is connected to the TXCT terminal of the first 100 Mbps Ethernet transformer. The second terminal of the 53rd resistor is connected to the first terminal of the 42nd capacitor. The second terminal of the 42nd capacitor is connected to the first terminals of the 88th, 89th, and 75th capacitors, and then grounded. The 88th capacitor... The second end of the capacitor is connected in series with the 54th resistor and then to the POE+ terminal of the RJ45 network port. The second end of the 89th capacitor is connected in series with the 51st resistor and then to the RXCT terminal of the first 100Mbps network port transformer. The second end of the 75th capacitor is connected in series with the 55th resistor and then to the POE- terminal of the RJ45 network port. The TD1+ terminal of the first 100Mbps network port transformer is connected to the first end of the 29th and 24th resistors, respectively. The TCT1 terminal of the first 100Mbps network port transformer is connected in series with the 33rd capacitor and then grounded. The RCT terminal of the first 100Mbps network port transformer is connected in series with the 34th capacitor and then grounded. The TD- terminal of the first 100Mbps network port transformer is connected to the 30th resistor, respectively. The first terminal of the first rectifier bridge is connected to the first terminal of the 25th resistor. The RD+ terminal of the first 100Mbps Ethernet transformer is connected to the first terminal of the 26th resistor and the first terminal of the 22nd resistor. The RD- terminal of the first 100Mbps Ethernet transformer is connected to the first terminal of the 27th resistor and the first terminal of the 23rd resistor. The second terminal of the 26th resistor is connected to the second terminal of the 27th resistor and the first terminal of the 29th capacitor. The second terminal of the 29th resistor is connected to the second terminal of the 30th resistor and the first terminal of the 35th capacitor. The second terminals of the 29th and 35th capacitors are both grounded. The third terminal of the first rectifier bridge is connected to the POE+ terminal of the RJ45 Ethernet port.The fourth terminal of the first rectifier bridge is connected to the POE- terminal of the RJ45 network port, the fourth terminal of the second rectifier bridge is connected to the POE1- terminal of the RJ45 network port, and the third terminal of the second rectifier bridge is connected to the POE1+ terminal of the RJ45 network port.

8. A Bluetooth gateway base station with PoE cascaded long-distance power supply according to claim 7, characterized in that, The PoE output circuit includes an RJ45 terminal, a 200Mbps Ethernet transformer, a 68th capacitor, a 69th capacitor, a 67th resistor, a 70th resistor, a 69th resistor, a 71st resistor, a 72nd capacitor, a 73rd capacitor, a 60th resistor, a 61st resistor, a 77th capacitor, a 70th capacitor, a 59th resistor, a 62nd resistor, a 78th capacitor, a 76th capacitor, and a 63rd resistor. The TX+ terminal of the RJ45 terminal is connected to the TX1+ terminal of the 200Mbps Ethernet transformer, the TX- terminal of the RJ45 terminal is connected to the TX1- terminal of the 200Mbps Ethernet transformer, and the RX+ terminal of the RJ45 terminal is connected to the RX+ terminal of the 200Mbps Ethernet transformer. The X+ terminal is connected; the RX- terminal of the RJ45 terminal is connected to the RX- terminal of the second 100Mbps Ethernet transformer; the G+ terminal of the RJ45 terminal is connected to the G+OUT terminal; the G- terminal of the RJ45 terminal is connected to the G-OUT terminal; the first terminal of the sixty-third resistor is connected to the G- terminal of the RJ45 terminal; the second terminal of the sixty-third resistor is grounded; the TCT1 terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the sixty-eighth capacitor; the RCT terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the sixty-ninth capacitor; the second terminal of the sixty-eighth capacitor is connected to the second terminal of the sixty-ninth capacitor and then grounded; the TD1+ terminal of the second 100Mbps Ethernet transformer is connected to the first terminal of the sixty-seventh resistor. The RD+ terminal of the 200Mbps Ethernet transformer is connected to the first terminal of the 69th resistor; the TD1- terminal of the 200Mbps Ethernet transformer is connected to the first terminal of the 70th resistor; the RD- terminal of the 200Mbps Ethernet transformer is connected to the first terminal of the 71st resistor; the second terminal of the 67th resistor is connected to the first terminal of the 72nd capacitor and the second terminal of the 70th resistor, respectively; the second terminal of the 72nd capacitor is grounded; the second terminal of the 69th resistor is connected to the first terminal of the 73rd capacitor and the second terminal of the 71st resistor, respectively; the second terminal of the 73rd capacitor is grounded; the TXCT terminal of the 200Mbps Ethernet transformer is connected to the first terminal of the 60th resistor; and the PE terminal of the RJ45 terminal... The S+ terminal is connected to the first terminal of the 61st resistor; the RXCT terminal of the 200Mbps Ethernet transformer is connected to the first terminal of the 59th resistor; the OUT1- terminal of the RJ45 terminal is connected to the first terminal of the 62nd resistor; the second terminal of the 60th resistor is connected to the first terminal of the 77th capacitor; the second terminal of the 61st resistor is connected to the first terminal of the 70th capacitor; the second terminal of the 77th capacitor is connected to the second terminal of the 70th capacitor and then grounded; the second terminal of the 59th resistor is connected to the first terminal of the 78th capacitor; the second terminal of the 62nd resistor is connected to the first terminal of the 76th capacitor; the second terminal of the 78th capacitor is connected to the second terminal of the 76th capacitor and then grounded.

Images