10G-rate high-power POE (Power Over Ethernet) mid-span

Abstract

The utility model discloses a 10G-rate high-power POE (Power Over Ethernet) mid-span, which comprises a built-in power supply, a POE chip and two RJ45 modules, one of the two RJ45 modules is a 10G integrated RJ45 module in which a 10G network transformer is integrated, the 10G integrated RJ45 module serves as a first port, and the other RJ45 module serves as a second port; the built-in power supply is used for converting an alternating current into a direct current with a standard POE voltage and then outputting a direct current power supply with the power of at least 90W; the first port serves as an output end of the high-power POE mid-span and is used for providing a POE power supply; the second port serves as a signal input end and is used for receiving a network data signal; the second port is in communication connection with the first port; and the 10G network transformer is used for coupling the network data signal received by the second port to the signal output end of the first port, so that the first port is also used for outputting the network data signal. According to the utility model, network data transmission with the highest 10G rate and a farther lossless transmission distance can be supported.

Description

Technical Field

[0001] The utility model relates to the cross - technology field in POE, in particular to a high - power POE midspan with a 10G rate. Background Art

[0002] With the wide application of network video monitoring, the requirement of providing power support through the Ethernet itself is becoming more and more urgent. In most cases, access point devices need DC power supply, and access point devices are usually installed on ceilings at relatively high positions from the ground or outdoors. It is very difficult to have a suitable power socket nearby. Even if there is a socket, it is difficult to find a place to install the AC - DC converter required by the access point device. In many large - scale LAN applications, administrators need to manage multiple access point devices at the same time. These devices require unified power supply and unified management, which brings great inconvenience to power supply management. Power over Ethernet (POE) just solves this problem. Devices that do not support POE power can be powered by connecting to a POE midspan through a network cable. A POE midspan (MIDSPAN), commonly known as a POE power supply box, is applied between a common router and network terminal devices to supply power to network terminal devices through network cables.

[0003] Nowadays, the market demand for POE midspans is increasing. Generally, the midspans on the market are gigabit midspans, which can only transmit at a maximum rate of 1000 Mbps. In addition, the power of ordinary midspans is generally only 30W, and the lossless transmission distance is limited. For high - rate (such as 10G) network signals, gigabit midspans have serious data loss and short effective transmission distance. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a high - power POE midspan with a 10G rate, which can support network data transmission at a maximum rate of 10G and a farther lossless transmission distance.

[0005] To solve the above - mentioned technical problem, the utility model discloses a high - power POE midspan with a 10G rate, which includes a built - in power supply, a POE chip and two RJ45 modules;

[0006] One of the two RJ45 modules is a 10G integrated RJ45 module with an internal integrated 10G network transformer, and this 10G integrated RJ45 module serves as the first port, and the other RJ45 module serves as the second port;

[0007] The built - in power supply receives an AC input of 90 - 264V, and the built - in power supply is used to convert the AC into a DC power supply with a standard POE voltage and output a DC power supply with a power of at least 90W; the output end of the built - in power supply is electrically connected to the power supply end of the POE chip;

[0008] The control terminal of the POE chip is electrically connected to the negative terminal of the POE power supply of the first port, and the output terminal of the built-in power supply is electrically connected to the positive terminal of the POE power supply of the first port; the first port serves as the output terminal of the high-power POE switch, and is used to provide the POE power supply.

[0009] The second port serves as a signal input terminal and is used to receive network data signals; the second port is communicatively connected to the first port. Among them, the second port sends the received network data signal to one end of the 10G network transformer in the first port through the 10G network transformer; the 10G network transformer is used to couple the network data signal to the signal output terminal of the first port, so that the first port is also used to output the network data signal.

[0010] As an optional implementation manner, the first port is connected to the powered device through a Cat7 cable or a Cat6A cable.

[0011] As another optional implementation manner, the standard POE voltage is taken as 55V.

[0012] As another optional implementation manner, the built-in power supply includes an isolation buck circuit, and the isolation buck circuit includes a power chip, a transformer, and a MOS tube; the transformer includes a primary winding, an auxiliary winding, and a secondary winding.

[0013] The first end of the primary winding is sequentially connected to the second end of the primary winding through a diode and a resistor, and a capacitor is connected in parallel with the resistor; the first end of the primary winding is grounded through the MOS tube; the gate of the MOS tube is connected to the output terminal of the power chip; the third end of the auxiliary winding is grounded, and its fourth end is connected to the power input terminal of the power chip through a diode and a resistor.

[0014] As another optional implementation manner, the output of the secondary winding is electrically connected to an optocoupler and is electrically connected to the feedback control terminal of the power chip through the optocoupler.

[0015] As another optional implementation manner, the isolation buck circuit further includes a filtering module, and the filtering module is arranged on the line from the input end of the isolation buck circuit to the primary winding.

[0016] As another optional implementation manner, the secondary winding is first connected to a diode for rectification, and then connected to a filtering module composed of two parallel capacitors; it also includes a capacitor and a resistor, and the capacitor and the resistor are connected in series and then connected in parallel with the diode.

[0017] As another alternative embodiment, it further includes a waterproof shell for sealing and wrapping the built-in power supply and the POE chip, and exposing the output end of the first port and the input end of the second port.

[0018] As another alternative embodiment, the material of the waterproof shell is pure aluminum or aluminum-based composite material.

[0019] Compared with the prior art, the embodiments of the present utility model have the following beneficial effects:

[0020] The POE midspan in the embodiments of the present utility model supports network data transmission at a maximum rate of 10G, resulting in low data loss. At the same time, the provided POE power supply has a relatively high power of 90W, supporting a longer lossless transmission distance; the POE midspan has high compatibility and can meet most usage conditions below the 10G communication rate in the midspan. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic structural diagram of a high-power 10G-rate POE midspan disclosed in the embodiments of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the first port of a high-power 10G-rate POE midspan disclosed in the embodiments of the present utility model;

[0024] Figure 3 is a schematic internal structural diagram of the first port of a high-power 10G-rate POE midspan disclosed in the embodiments of the present utility model;

[0025] Figure 4 is a schematic structural diagram of the second port of a high-power 10G-rate POE midspan disclosed in the embodiments of the present utility model;

[0026] Figure 5 is a schematic structural diagram of the isolation step-down circuit in the built-in power supply of a high-power 10G-rate POE midspan disclosed in the embodiments of the present utility model;

[0027] Figure 6 is a schematic circuit diagram of the isolation step-down circuit in the built-in power supply of a high-power 10G-rate POE midspan disclosed in the embodiments of the present utility model;

[0028] Figure 7 This is a schematic structural diagram of a POE chip for a high-power POE midspan with a 10G rate disclosed in an embodiment of the present utility model. Specific embodiments

[0029] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] See Figures 1 to 7 , an embodiment of the present utility model discloses a high-power POE midspan with a 10G rate, including a built-in power supply F, a POE chip U1, and two RJ45 modules;

[0031] One of the two RJ45 modules is a 10G integrated RJ45 module with an internally integrated 10G network transformer. This 10G integrated RJ45 module serves as the first port RJ1, and the other RJ45 module serves as the second port RJ2;

[0032] The built-in power supply F is connected to an AC input of 90 - 264V, and the built-in power supply F is used to convert the AC power into a DC power supply with a standard POE voltage and output a DC power supply with a power of at least 90W; the output end of the built-in power supply F is electrically connected to the power supply end of the POE chip U1;

[0033] The control end of the POE chip U1 is electrically connected to the negative POE power supply end of the first port RJ1, and the output end of the built-in power supply F is electrically connected to the positive POE power supply end of the first port RJ1; the first port RJ1 serves as the output end of the high-power POE midspan for providing a POE power supply;

[0034] The second port RJ2 serves as a signal input end for receiving network data signals; the second port RJ2 is communicatively connected to the first port RJ1. Among them, the second port RJ2 sends the received network data signals to one end of the 10G network transformer in the first port RJ1 through the 10G network transformer; the 10G network transformer is used to couple the network data signals to the signal output end of the first port RJ1, so that the first port RJ1 is also used to output the network data signals.

[0035] The POE midspan in the embodiment of the present utility model is used to provide a POE power supply for a powered device; the powered device is a PD device, such as a network terminal device.

[0036] Due to the adoption of a 10G network transformer, the POE midspan in the embodiment of the present utility model can not only meet the 10G high-speed transmission, but also be downward compatible with the transmission signals of 5G / 2.5G / 1000Mbps / 100Mbps / 10Mbps.

[0037] The POE midspan in the embodiment of the present utility model supports network data transmission at a maximum rate of 10G, resulting in low data loss. At the same time, the provided POE power supply has a relatively high power of 90W, supporting a longer lossless transmission distance; the POE midspan has high compatibility and can meet most usage conditions below the 10G communication rate in the midspan.

[0038] In an alternative embodiment, the first port RJ1 is connected to the powered device through a Cat7 cable or a Cat6A cable to increase the data transmission distance.

[0039] In another alternative embodiment, the standard POE voltage is taken as 55V.

[0040] In another alternative embodiment, the built-in power supply F includes an isolation step-down circuit, and the isolation step-down circuit includes a power chip U2, a transformer T2, and a mos tube Q1; the transformer T1 includes a primary winding, an auxiliary winding, and a secondary winding;

[0041] The first end of the primary winding is sequentially connected to the second end of the primary winding through a diode and a resistor, and a capacitor is connected in parallel with the resistor; the first end of the primary winding is grounded through the mos tube; the gate of the mos tube is connected to the output end of the power chip U2; the third end of the auxiliary winding is grounded, and its fourth end is connected to the power input end of the power chip U2 through a diode and a resistor.

[0042] The input of the POE midspan in this embodiment is electrically isolated by a JR45 module, and the output is electrically isolated by an isolation step-down circuit (transformer isolation), so that both the input and the output have an isolation design, improving safety.

[0043] In another alternative embodiment, the output of the secondary winding is electrically connected to an optocoupler and is electrically connected to the feedback control end of the power chip U2 through the optocoupler.

[0044] In another alternative embodiment, the isolation step-down circuit further includes a filtering module EC1, and the filtering module EC1 is arranged on the line from the input end of the isolation step-down circuit to the primary winding.

[0045] In yet another alternative embodiment, the secondary winding is first connected to a diode for rectification and then connected to a filtering module composed of two parallel capacitors; it further includes a capacitor and a resistor, and after the capacitor and the resistor are connected in series, they are connected in parallel with the diode.

[0046] In yet another alternative embodiment, it further includes a waterproof housing K, and the waterproof housing K is used to seal and wrap the built-in power supply F and the POE chip U1, and expose the output end of the first port RJ1 and the input end of the second port RJ2. This solves the limitation that ordinary POE cannot be used in outdoor rainy environments.

[0047] In yet another alternative embodiment, the material of the waterproof housing K is pure aluminum or an aluminum-based composite material. In addition to waterproofing, it also has good heat dissipation ability and good protection effect.

[0048] The following takes Figures 1 to 7 as an example to illustrate:

[0049] First, an AC voltage of 90V - 264V needs to be connected. When an AC power supply is input, it will be converted into a DC 55V voltage through the built-in power supply F (AC to DC power supply) (the standard POE voltage is 44V - 57V). Since the standard POE voltage is 44V - 57V, the AC power needs to be converted into DC power first and meet the POE standard supply voltage before POE power supply can be carried out. And this power supply meets a maximum output current of 2A and an output power greater than 90W;

[0050] After the built-in power supply F converts the input AC voltage into a DC voltage, first, the DC voltage will be supplied to the POE chip U1 to let the POE chip U1 detect the 55V voltage. At the same time, the DC 55V will be connected to the input RJ45 RJ1, and the negative pole of the POE power supply is connected from the 10G integrated RJ45 to the POE chip U1. The POE chip U1 controls the entire power supply process. When a PD device is connected to the output 10G integrated RJ45, first, the POE chip U1 will send a handshake signal to detect whether the PD device is a standard PD device. After this step is completed, grading starts, and after grading is completed, power supply starts;

[0051] 10G signal part: When the RJ2 port (input port, only 10G communication signal, no POE power supply) is connected, due to the long distance, the input POE part may have no power. At this time, a new type of high-power 10G midspan is connected in series on the path. After the signal is connected, the high-speed signal is transmitted to one end of the built-in 10G network transformer of the integrated RJ45RJ1 through the input port RJ2. The 10G network signal is coupled to the other end of RJ1 through the coupling effect of the network transformer and transmitted out. In addition, through the POE chip U1, the lossless POE power is supplied to the RJ1 port. At this time, the RJ1 port has 10G communication signal and lossless high-power POE, and these 10G signals and power are transmitted to the connected PD device to complete the extension of POE power. In addition, because this 10G midspan transmits 10G signals, the network cable needs to use Cat7 network cable or Cat6A network cable to transmit 100 meters, otherwise there will be signal attenuation and the transmission distance will be reduced.

[0052] In the isolated step-down circuit: When the AC power connected to the built-in power supply F is converted into DC power, the DC power will pass through the filter capacitors EC1 and C3 to filter out the noise and reach the high-frequency transformer T2. At this time, the PWM power control chip U2 and the high-frequency transformer source end absorption part (D5, R2, R3, C4) are connected in parallel on the path. After reaching the high-frequency transformer, the PWM control chip U2 also receives the power connection information through the starting resistor R5, and starts to listen to R13, R14 (driving current limiting resistor), and starts to give a high voltage to the gate of the switch MOS tube Q1, driving the MOS tube to open, and the high The energy just stored in the primary side of the high-frequency transformer is discharged through the MOS tube. Because the high-frequency transformer is a magnetic component, when the primary coil releases energy, the secondary coil begins to store energy. Then, when the primary coil stores energy again, the secondary coil begins to release energy, and through the Schottky diode D4, the output filter capacitors C5 and C6 begin to output a stable 12V / 24V voltage. The optocoupler of the feedback part is connected in parallel with the TL431 in the input circuit. After being processed by TL431, it is fed back to the PWM chip U2 through the optocoupler. U2 then adjusts the drive duty cycle to adjust the entire circuit.

[0053] The contents disclosed in the embodiments of the present invention only disclose the preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A 10G high-power POE midspan, characterized in that: Includes built-in power supply, POE chip and two RJ45 modules; One of the two RJ45 modules is a 10G integrated RJ45 module with an internally integrated 10G network transformer, the 10G integrated RJ45 module serves as a first port, and the other RJ45 module serves as a second port; The built-in power supply is connected to an AC power input of 90-264V, and the built-in power supply is used to convert the AC power into a DC power of a standard POE voltage and then output a DC power supply of at least 90W; the output end of the built-in power supply is electrically connected to the power supply end of the POE chip; The control end of the POE chip is electrically connected to the negative end of the POE power supply of the first port, and the output end of the built-in power supply is electrically connected to the positive end of the POE power supply of the first port; The first port is used as an output end of the high-power POE midspan to provide POE power; The second port serves as a signal input terminal for receiving a network data signal; the second port is communicatively connected to the first port, wherein the second port sends the received network data signal to one end of the 10G network transformer in the first port through the 10G network transformer; the 10G network transformer is used to couple the network data signal to the signal output terminal of the first port, so that the first port is also used to output the network data signal.

2. The high-power POE midspan according to claim 1, characterized in that: The first port is connected to the powered device via a Cat7 network cable or a Cat6A network cable.

3. The high-power POE midspan according to claim 1, characterized in that: The standard POE voltage is 55V.

4. The high-power POE midspan according to claim 1, characterized in that: The built-in power supply includes an isolated buck circuit, which includes a power chip, a transformer, and a MOS tube; the transformer includes a primary winding, an auxiliary winding, and a secondary winding; The first end of the primary winding is connected to the second end of the primary winding through a diode and a resistor in sequence, and the resistor is connected in parallel with a capacitor; the first end of the primary winding is grounded through the MOS tube; the gate of the MOS tube is connected to the output end of the power chip; the third end of the auxiliary winding is grounded, and the fourth end thereof is connected to the power input end of the power chip after passing through a diode and a resistor.

5. The high-power POE midspan according to claim 4, characterized in that: The output of the secondary winding is electrically connected to an optocoupler, and is electrically connected to the feedback control terminal of the power chip via the optocoupler.

6. The high-power POE midspan according to claim 4, characterized in that: The isolated buck circuit further includes a filter module, which is arranged on a line from an input end of the isolated buck circuit to the primary winding.

7. The high-power POE midspan according to claim 4, characterized in that: The secondary winding is first connected to a diode to achieve rectification, and then connected to a filter module consisting of two parallel capacitors; it also includes a capacitor and a resistor, the capacitor and the resistor are connected in series and then in parallel with the diode.

8. The high-power POE midspan according to claim 1, characterized in that: It also includes a waterproof shell, which is used to seal and wrap the built-in power supply and the POE chip, and expose the output end of the first port and the input end of the second port.

9. The high-power POE midspan according to claim 8, characterized in that: The material of the waterproof shell is pure aluminum or aluminum-based composite material.

Images