Outdoor waterproof POE separator

Abstract

The utility model discloses an outdoor waterproof POE separator comprising two RJ45 modules (terminals RJ1 and RJ2), a network transformer, a PD chip circuit, a bridge rectifier circuit, an isolation step-down circuit, a phoenix terminal and a waterproof housing. The terminal RJ1 is electrically connected with a network transformer, and a network communication signal is coupled to the other end of the network transformer through a built-in magnetic electronic component by the network transformer and then is transmitted to the terminal RJ2; the terminal RJ1 is used for being externally connected with a PSE power supply, and a POE power supply in the PSE power supply is electrically connected to the bridge rectifier circuit through a center tap of the network transformer; the output of the bridge rectifier circuit is electrically connected to the PD chip circuit and supplies power to the isolation step-down circuit through the PD chip circuit, and the PD chip circuit is coupled with the source end of the POE power supply; the output of the isolation step-down circuit is electrically connected to the phoenix terminal, and the phoenix terminal supplies power to external equipment; the waterproof housing seals and wraps the circuit structure, and the terminals are exposed. The utility model discloses can be used in outdoor environment, and input and output have isolation design.

Description

Technical Field

[0001] The utility model relates to the technical field of POE splitters, in particular to an outdoor waterproof POE splitter. Background Art

[0002] Nowadays, the market demand for POE splitters is increasing. Previously, splitters mainly output a DC voltage of 48V - 55V (standard POE power supply voltage) through PD handshake chips, and could not be well widely applied to all field environments (such as devices like PCs with 12V / 24V powered devices). Moreover, the usage environment was mostly indoor, and the usage conditions of the machines were greatly restricted. Especially in rainy environments, some ordinary splitters simply could not be used normally. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an outdoor waterproof POE splitter that can be used in outdoor rainy environments, and both the input and output have isolation designs to improve safety.

[0004] To solve the above technical problem, the utility model discloses an outdoor waterproof POE splitter, which includes two RJ45 modules as the plug-in terminals of the POE splitter, a network transformer, a PD chip circuit, a bridge rectifier circuit, an isolation step-down circuit, a phoenix terminal, and a waterproof housing;

[0005] The first RJ45 module serves as terminal RJ1, and the second RJ45 module serves as terminal RJ2; the terminal RJ1 is electrically connected to the network transformer, and the network communication signal is coupled to the other end of the network transformer via the built-in magnetic electronic components through the network transformer and then transmitted to the terminal RJ2; the terminal RJ1 is used to externally connect a PSE power supply, and the POE power in the PSE power supply is electrically connected to the bridge rectifier circuit through the center tap of the network transformer; the output of the bridge rectifier circuit is electrically connected to the PD chip circuit, and the PD chip circuit supplies power to the isolation step-down circuit, and the PD chip circuit is coupled to the source end of the POE power supply;

[0006] The output of the isolation step-down circuit is electrically connected to the phoenix terminal, and the phoenix terminal is used to supply power to external devices;

[0007] The waterproof housing is used to hermetically wrap the network transformer, the PD chip circuit, the bridge rectifier circuit, and the isolation step-down circuit, and expose the RJ45 module and the phoenix terminal externally.

[0008] As an optional implementation manner, the material of the waterproof housing is a pure metal material, a pure non-metal material, or a composite material.

[0009] As yet another alternative embodiment, the material of the waterproof housing is pure aluminum or an aluminum-based composite material.

[0010] As yet another alternative embodiment, the isolation step-down circuit includes a power chip, a transformer, a MOS transistor, and a filtering module; the transformer includes a primary winding, an auxiliary winding, and a secondary winding.

[0011] As yet another alternative embodiment, the filtering module is provided on the line from the power input to the primary winding.

[0012] As yet another alternative embodiment, 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.

[0013] As yet another alternative embodiment, the first end of the primary winding is grounded through the MOS transistor; the gate of the MOS transistor is connected to the output end of the power chip.

[0014] As yet another alternative embodiment, the third end of the auxiliary winding is grounded, and its fourth end is connected to the power input end of the power chip through a diode and a resistor.

[0015] As yet 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 through the optocoupler.

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

[0017] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0018] Compared with a conventional POE splitter, the POE splitter of the present invention adopts a waterproof housing, has a wider range of use, and solves the limitation that an ordinary POE splitter cannot be used in a rainy outdoor environment; the input uses a JR45 module for electrical isolation, and the output uses an isolation step-down circuit for electrical isolation, so that both the input and the output have an isolation design, improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of an outdoor waterproof POE splitter disclosed in an embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of an isolation step-down circuit of an outdoor waterproof POE splitter disclosed in an embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of an RJ45 module of an outdoor waterproof POE splitter disclosed in an embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of a bridge rectifier circuit of an outdoor waterproof POE splitter disclosed in an embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of a PD chip circuit of an outdoor waterproof POE splitter disclosed in an embodiment of the present utility model. Specific embodiments

[0025] 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 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 belong to the scope of protection of the present utility model.

[0026] See Figures 1 to 5 , an embodiment of the present utility model discloses an outdoor waterproof POE splitter, which includes two RJ45 modules as the plug-in terminals of the POE splitter, a network transformer T1, a PD chip circuit U1, a bridge rectifier circuit (not shown in the Figure 1 figure), an isolation step-down circuit G, a phoenix terminal F, and a waterproof housing K;

[0027] The first RJ45 module serves as terminal RJ1, and the second RJ45 module serves as terminal RJ2; the terminal RJ1 is electrically connected to the network transformer T1, and the network communication signal is coupled to the other end of the network transformer T1 via the built-in magnetic electronic components through the network transformer T1 and then transmitted to the terminal RJ2; the terminal RJ1 is used to externally connect to a PSE power supply, and the POE power supply in the PSE power supply is electrically connected to the bridge rectifier circuit through the center tap of the network transformer T1; the output of the bridge rectifier circuit is electrically connected to the PD chip circuit U1, and the PD chip circuit U1 supplies power to the isolation buck circuit G, and the PD chip circuit U1 is coupled to the source end of the POE power supply;

[0028] The output of the isolation buck circuit G is electrically connected to the phoenix terminal F, and the phoenix terminal F is used to supply power to external devices;

[0029] The waterproof housing K is used to hermetically wrap the network transformer T1, the PD chip circuit U1, the bridge rectifier circuit and the isolation buck circuit G, and expose the RJ45 module and the phoenix terminal F externally.

[0030] The present utility model selects two RJ45 ports and one phoenix terminal port as external interfaces. One of the RJ45 ports serves as a PD input interface and network access, and the other RJ45 is responsible for transmitting the separated network. The phoenix terminal is responsible for transmitting the received POE voltage to other external devices such as a PC after step-down. After connecting the PSE power supply (48V - 57V), the network part is coupled to the other section through the network transformer and transmitted out. The PSE power supply part is step-down internally and then transmitted out through the phoenix terminal. The output power is up to 60W / 90W. In addition, the housing part adopts a sealed waterproof structure, which perfectly combines the advantages of the three, greatly increasing the usage range and usage occasions of the separator.

[0031] Compared with conventional POE splitters, the POE splitter of the present utility model adopts a waterproof housing, has a wider usage range, and solves the limitation that ordinary POE splitters cannot be used in rainy outdoor environments; the input uses a JR45 module for electrical isolation, and the output uses an isolation buck circuit for electrical isolation, so that both the input and output have an isolation design, improving safety.

[0032] In an optional embodiment, the material of the waterproof housing is a pure metal material, a pure non-metal material or a composite material.

[0033] In another optional embodiment, the material of the waterproof housing is pure aluminum or an aluminum-based composite material. In addition to waterproofing, it also has good heat dissipation ability and good protection effect.

[0034] In yet another alternative embodiment, the isolation buck circuit includes a power chip U2, a transformer T2, a MOS transistor Q1, and a filtering module; the transformer includes a primary winding, an auxiliary winding, and a secondary winding.

[0035] In yet another alternative embodiment, the filtering module is provided on the line from the power input to the primary winding. The filtering module typically includes two or more capacitors in parallel.

[0036] In yet another alternative embodiment, 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. When the stored electrical energy is released after the primary winding is powered off, the primary winding can form a discharge circuit through the diode and the resistor, and the resistor is used to consume the electrical energy released by the primary winding, and the capacitor plays a protective role.

[0037] In yet another alternative embodiment, the first end of the primary winding is grounded through the MOS transistor Q1; the gate of the MOS transistor Q1 is connected to the output end of the power chip.

[0038] In yet another alternative embodiment, the third end of the auxiliary winding is grounded, and its fourth end is connected to the power input end of the power chip through a diode and a resistor.

[0039] In yet 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 through the optocoupler. The optocoupler isolates the output end from the power chip to protect the power chip.

[0040] In yet another alternative embodiment, the secondary winding is first rectified by a diode D4 and then connected to a filtering module C5 composed of two capacitors in parallel; it further includes a capacitor and a resistor, and the capacitor and the resistor are connected in series and then connected in parallel with the diode D4. The series connection of the capacitor and the resistor is used for surge absorption.

[0041] The following takes Figures 1 to 5 the structure shown as an example for illustration:

[0042] When a PSE (network signal + POE power) power supply is plugged in at the RJ45 (RJ1) end, first it passes through the network transformer T1. T1 will couple the network communication signal to the other end of the network transformer T1 through the built-in magnetic components, and then transmit it to another RJ45 (RJ2) to transmit the network signal. For the POE power supply (48 - 57V) part, it is transmitted to the bridge rectifier circuit part (existing circuit structure) for rectification through the center tap of the network transformer T1 (on the RJ1 side);

[0043] When the POE power supply arrives at the bridge rectifier, it is rectified by the bridge rectifiers D1 and D3 to integrate the positive and negative poles of 12 / 36 / 45 / 78 (the 8 signal lines of the network signal, carrying the POE power supply) (since there are various POE power supply definitions in the market, such as: the 12th wire sequence is positive and the 36th wire sequence is negative, or vice versa, and there are four definitions of the power supply wire sequence polarity in the IEEE802.3bt protocol, so it is necessary to set up the bridge rectifier. Without the bridge rectifier for rectification, in case of a complex power supply wire sequence, it may not be possible to supply power. Adding a bridge rectifier can be compatible with all power supply wire sequences);

[0044] When the POE power supply is integrated by the bridge rectifier, it will reach the PD chip circuit U1 (TPS2373). The main purpose of the PD chip is to feedback on the source end (PSE power supply end) of the supplied POE power supply (feedback parts such as: informing the PSE power supply end whether it is a standard PD and how much power it can accept, etc.). When the source end (PSE power supply end) receives the information sent by the PD chip U1 (TPS2373), it will supply power according to the information feedback by the PD chip. At this time, the POE starts to supply power officially; and the PD chip circuit supplies power to the isolation step-down circuit, and the PD chip circuit is coupled to the source end of the POE power supply;

[0045] When the POE starts to supply power officially, there is already a POE voltage (48V - 57V) on the circuit. It will pass through the filter capacitors EC1 and C3 to filter out the noise and then reach the high-frequency transformer T2. At this time, the PWM power control chip U2 and the source end absorption part of the high-frequency transformer (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 information of power access through the start-up resistor R5, and starts to give a high voltage to the gate of the switching MOS transistor Q1 through R13 and R14 (drive current-limiting resistors), driving the MOS transistor to open, and discharging the energy just stored in the primary side of the high-frequency transformer through the MOS transistor. Since the high-frequency transformer is a magnetic component, when the primary coil releases energy, the secondary coil starts to store energy, and then when the primary coil stores energy again, the secondary coil starts to release energy, and through the Schottky diode D4, the output filter capacitors C5 and C6 start to output a stable 12V / 24V voltage. The optocoupler and TL431 in the feedback part are connected in parallel on the input circuit, first processed by TL431 and then fed back to the PWM chip U2 through the optocoupler. U2 then adjusts the drive duty cycle to adjust the entire circuit. After the stable 12V / 24V is input, the isolation step-down circuit outputs power to external devices through the 2PIN phoenix terminal CN1;

[0046] With a waterproof housing added to this machine, it becomes a high-power waterproof mid-span for outdoor AC input.

[0047] The above output terminals can be two-PIN, three-PIN or other multi-PIN terminals.

[0048] The disclosure of the content disclosed in the embodiments of the present utility model is only the preferred embodiments of the present utility model, and is only used to illustrate the technical solutions of the present utility model, rather than limiting it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An outdoor waterproof POE splitter, characterized in that, It includes two RJ45 modules, a network transformer, a PD chip circuit, a bridge rectifier circuit, an isolation step-down circuit, a phoenix terminal and a waterproof housing, which are the plug-in terminals of the POE splitter; The first RJ45 module serves as terminal RJ1, and the second RJ45 module serves as terminal RJ2; the terminal RJ1 is electrically connected to the network transformer, and the network communication signal is coupled to the other end of the network transformer through the built-in magnetic electronic components in the network transformer and then transmitted to the terminal RJ2; the terminal RJ1 is used to externally connect a PSE power supply, and the POE power in the PSE power supply is electrically connected to the bridge rectifier circuit through the center tap of the network transformer; the output of the bridge rectifier circuit is electrically connected to the PD chip circuit, and the PD chip circuit supplies power to the isolation step-down circuit, and the PD chip circuit is coupled to the source end of the POE power supply; The output of the isolation step-down circuit is electrically connected to the phoenix terminal, and the phoenix terminal is used to supply power to external devices; The waterproof housing is used to hermetically wrap the network transformer, the PD chip circuit, the bridge rectifier circuit and the isolation step-down circuit, and expose the RJ45 module and the phoenix terminal externally.

2. The POE splitter according to claim 1, characterized in that, The material of the waterproof housing is a pure metal material, a pure non-metal material or a composite material.

3. The POE splitter according to claim 1, characterized in that, The material of the waterproof housing is pure aluminum or an aluminum-based composite material.

4. The POE splitter according to claim 1, characterized in that, The isolation step-down circuit includes a power chip, a transformer, a mos tube and a filtering module; the transformer includes a primary winding, an auxiliary winding and a secondary winding.

5. The POE splitter according to claim 4, wherein The filtering module is provided on the line from the power input to the primary winding.

6. The POE splitter according to claim 4, wherein, 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 the resistor is connected in parallel with a capacitor.

7. The POE splitter according to claim 4, wherein 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.

8. The POE splitter according to claim 4, characterized in that, The third end of the auxiliary winding is grounded, and its fourth end is connected to the power input end of the power chip through a diode and a resistor.

9. The POE splitter according to claim 4, wherein 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 through the optocoupler.

10. The POE splitter according to claim 4, characterized in that, It also includes a diode, a capacitor and a resistor; the secondary winding is first connected to the diode for rectification, and then connected to a filtering module composed of two capacitors connected in parallel; the capacitor and the resistor are connected in series and then connected in parallel with the diode.

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