POE (Power Over Ethernet) equipment for thin client and thin client host

Abstract

The utility model discloses POE (Power Over Ethernet) equipment for a thin client and a thin client host. The POE equipment comprises a POE device and a heat dissipation assembly, the heat dissipation assembly is arranged on the POE device, and the POE device comprises a control chip and a POE power supply switching circuit; the output end of the POE power supply switching circuit is electrically connected with the power supply output port of the POE device; and the input end of the POE power supply switching circuit is used for accessing an adapter power supply detection signal of the client host. The POE power supply switching circuit is arranged, after it is detected that the client host accesses the adapter for power supply, POE power supply output is cut off, the POE device is matched with the heat dissipation assembly, the heating temperature of the POE device in the operation process is reduced, heat loss is reduced, flexible switching between adapter power supply and POE power supply is achieved, and resource waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of Ethernet power supply, in particular to a POE device used for a thin client terminal and a thin client host. Background Art

[0002] Nowadays, IP-based terminal devices are developing rapidly; the power of such devices varies, and different power adapters and network cables are required for use. POE (Power over Ethernet) transmits Ethernet signals and power simultaneously through a CAT5 twisted pair cable, optimizing structured wiring while ensuring the normal operation of the existing network and minimizing costs.

[0003] However, not all Ethernet clients have POE function. Especially in high-power application environments, POE-powered devices generate severe heat and have high heat loss. Customers are uncertain about whether the machine needs to have POE power supply function, which also limits the use of POE power supply. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a POE device for a thin client and a thin client host, so as to improve the flexibility of using POE power supply and reduce heat loss.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A POE device for a thin client terminal, comprising a POE device and a heat dissipation component;

[0007] The heat dissipation component is arranged on the POE device, and the POE device includes a control chip and a POE power supply switching circuit;

[0008] The POE power supply switching circuit includes a comparator, a controller, a first resistor, a second resistor and a MOS tube;

[0009] The output end of the comparator is electrically connected to the controller, the controller is electrically connected to the gate of the MOS tube through the first resistor, the drain of the MOS tube is electrically connected to the power supply output port of the POE device through the second resistor, and the source of the MOS tube is grounded;

[0010] The input end of the comparator is used to access the adapter power supply detection signal of the client host.

[0011] Furthermore, the POE device also includes a circuit board and an input network port, an isolation transformer, a network card chip, a first network transmission socket, a forward conversion component and a power supply output socket arranged on the circuit board;

[0012] The input network port is electrically connected to the network card chip and the control chip respectively through the isolation transformer;

[0013] The network card chip is electrically connected to the first network transmission socket, and the control chip is electrically connected to the power output socket through the forward conversion component;

[0014] The first network transmission socket is connected to the input end of the POE power supply switching circuit and is used to access the adapter power supply detection signal of the client host.

[0015] Furthermore, the forward conversion component is vertically packaged on the circuit board;

[0016] The heat dissipation component includes a heat sink, which is arranged on the circuit board and adjacent to the forward conversion component.

[0017] Furthermore, the circuit board is provided with mounting points distributed around the forward conversion component;

[0018] The mounting point is detachably connected to the heat sink.

[0019] In order to solve the above technical problems, another technical solution adopted by the utility model is:

[0020] A thin client host, comprising a protective shell, a client mainboard, an adapter power supply socket and the above-mentioned POE device for a thin client terminal;

[0021] The POE device and the client mainboard are both arranged in the protective shell, a heat dissipation window is arranged on the protective shell, and the POE device is adjacent to the heat dissipation window;

[0022] The client mainboard is respectively connected to the adapter power socket and the power output port and network output port of the POE device. An adapter power detection component is provided on the client mainboard. The input end of the adapter power detection component is connected to the adapter power socket, and the output end of the adapter power detection component is connected to the input end of the comparator.

[0023] Furthermore, the protective housing also includes a second network transmission socket;

[0024] The client mainboard is electrically connected to the first network transmission socket via the second network transmission socket; the second network transmission socket is connected to the output end of the adapter power supply detection component.

[0025] Furthermore, the protective housing also includes a power input socket;

[0026] The client mainboard is electrically connected to the power output socket via the power input socket.

[0027] Furthermore, the adapter power supply detection component is a jumper.

[0028] The beneficial effects of the utility model are: providing a POE device and a thin client host for a thin client, setting a POE power supply switching circuit, and cutting off the POE power supply output after detecting that the thin client host is connected to the adapter for power supply, and providing a heat dissipation component for the POE device to reduce its heating temperature during operation, reduce heat loss, realize flexible switching between adapter power supply and POE power supply, and avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the internal connection of a POE device for a thin client and a thin client host of the utility model;

[0030] Figure 2 A circuit diagram of a power supply switching circuit for a POE device on a thin client side of the utility model;

[0031] Figure 3 The utility model is a schematic diagram of the internal structure of a POE device for a thin client and a thin client host.

[0032] Description of labels:

[0033] 1. POE device; 2. heat sink; 3. protective shell; 4. client motherboard; 5. adapter power socket; 6. heat dissipation window; 7. second network transmission socket; 8. power input socket; 9. adapter power detection unit; 10. power supply equipment;

[0034] 11. Power supply switching circuit; 12. Circuit board; 13. Input network port; 14. Isolation transformer; 15. Network card chip; 16. First network transmission socket; 17. Forward conversion component; 18. Power supply output socket; 19. Control chip; 20. Installation point;

[0035] Q1, MOS tube;

[0036] R1, first resistor; R2, second resistor;

[0037] U1, comparator; U2, controller. DETAILED DESCRIPTION

[0038] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0039] Please refer to Figure 1 and Figure 2, a POE device for a thin client, comprising a POE device 1 and a heat dissipation component;

[0040] The heat dissipation component is arranged on the POE device 1, and the POE device 1 comprises a control chip 19 and a POE power supply switching circuit 11;

[0041] The POE power supply switching circuit 11 includes a comparator U1, a controller U2, a first resistor R1, a second resistor R2 and a MOS tube Q1;

[0042] The output end of the comparator U1 is electrically connected to the controller U2, the controller U2 is electrically connected to the gate of the MOS transistor Q1 through the first resistor R1, the drain of the MOS transistor Q1 is electrically connected to the power supply output port of the POE device 1 through the second resistor R2, and the source of the MOS transistor Q1 is grounded;

[0043] The input end of the comparator U1 is used to receive the adapter power supply detection signal of the client host.

[0044] From the above description, it can be seen that the beneficial effects of the utility model are: a POE power supply switching circuit 11 is set, and after detecting that the thin client host is connected to the adapter for power supply, the POE power supply output is cut off, and a heat dissipation component is provided for the POE device 1 to reduce its heating temperature during operation, reduce heat loss, realize flexible switching between adapter power supply and POE power supply, and avoid waste of resources.

[0045] In addition, the comparator U1 is used to compare the voltage of the adapter power supply detection node with the preset threshold voltage, and the controller U2 pulls down the MOS tube Q1 according to the comparison result, thereby limiting the POE power supply output. The comparator U1 and the controller U2 cooperate with each other and utilize the switching performance of the MOS to achieve accurate and stable output limitation.

[0046] Furthermore, the POE device 1 further includes a circuit board 12 and an input network port 13, an isolation transformer 14, a network card chip 15, a first network transmission socket 16, a forward conversion component 17 and a power output socket 18 arranged on the circuit board 12;

[0047] The input network port 13 is electrically connected to the network card chip 15 and the control chip 19 respectively through the isolation transformer 14;

[0048] The network card chip 15 is electrically connected to the first network transmission socket 16, and the control chip 19 is electrically connected to the power output socket 18 through the forward conversion component 17;

[0049] The first network transmission socket 16 is connected to the input end of the POE power supply switching circuit 11 and is used to access the adapter power supply detection signal of the client host.

[0050] From the above description, it can be seen that the POE device 1 receives the network signal and power provided by the power supply device 10 through the input network port 13, and after passing through the isolation transformer 14, the network signal is transmitted to the client host through the network card chip 15 and the first network transmission socket 16, and the power is transmitted to the client host through the control chip 19, the forward conversion component 17 and the power supply output socket 18, so as to optimize the structural wiring and reduce costs.

[0051] Furthermore, the forward conversion component 17 is vertically packaged on the circuit board 12;

[0052] The heat dissipation component includes a heat sink 2 , which is disposed on the circuit board 12 and adjacent to the forward conversion component 17 .

[0053] From the above description, it can be seen that the forward conversion component 17 adopts a vertical package and is equipped with a heat sink 2, which can achieve efficient heat dissipation and reduce heat loss.

[0054] Furthermore, the circuit board 12 is provided with mounting points 20 distributed around the forward conversion component 17;

[0055] The mounting point 20 is detachably connected to the heat sink 2 .

[0056] From the above description, it can be seen that by reserving the installation point 20, when the equipment is actually assembled, the number and data of the heat sink 2 can be changed according to the installation environment, so that for the heat source forward conversion component 17, precise heat dissipation can be flexibly achieved.

[0057] Please refer to Figure 1 and Figure 3 , a thin client host, comprising a protective housing 3, a client mainboard 4, an adapter power supply socket 5 and the above-mentioned POE device for a thin client;

[0058] The POE device 1 and the client mainboard 4 are both arranged in the protective shell 3. The protective shell 3 is provided with a heat dissipation window 6, and the POE device 1 is adjacent to the heat dissipation window 6;

[0059] The client mainboard 4 is respectively connected to the adapter power socket 5 and the power output port and the network output port of the POE device 1. An adapter power detection component 9 is provided on the client mainboard 4. The input end of the adapter power detection component 9 is connected to the adapter power socket 5, and the output end of the adapter power detection component 9 is connected to the input end of the comparator U1.

[0060] From the above description, it can be seen that the beneficial effects of the utility model are: an adapter power supply detection component 9 is set to cooperate with the POE power supply switching circuit 11, and after detecting that the client host is connected to the adapter power supply, the POE power supply output is cut off, and a heat dissipation component is provided for the POE device 1 to reduce its heating temperature during operation, reduce heat loss, realize flexible switching between adapter power supply and POE power supply, and avoid waste of resources.

[0061] Furthermore, the protective housing 3 also includes a second network transmission socket 7;

[0062] The client mainboard 4 is electrically connected to the first network transmission socket 16 via the second network transmission socket 7 ; the second network transmission socket 7 is connected to the output end of the adapter power supply detection component 9 .

[0063] From the above description, it can be known that the second network transmission socket 7 is aligned with the first network transmission socket 16, not only serving as a node for receiving network signals on the client side, but also used for transmitting a detection signal for power supply of the adapter.

[0064] Furthermore, the protective housing 3 also includes a power input socket 8;

[0065] The client mainboard 4 is electrically connected to the power output socket 18 via the power input socket 8 .

[0066] From the above description, it can be seen that a power input socket 8 is provided in the protective shell 3 for connecting the power output of the POE device to the client mainboard 4, thereby improving the wiring convenience of the client mainboard 4 to realize POE power supply.

[0067] Furthermore, the adapter power supply detection component 9 is a jumper.

[0068] From the above description, it can be known that the adapter power supply signal is led out from the adapter power supply socket 5 to the second network transmission socket 7 by using a jumper, and then transmitted to the POE power supply switching circuit 11 by the second network transmission socket 7 .

[0069] Please refer to Figure 1 , Embodiment 1 of the present utility model is:

[0070] A POE device for a thin client terminal includes a POE device 1 and a heat dissipation component; the heat dissipation component is arranged on the POE device 1, and the POE device 1 includes a control chip 19 and a POE power supply switching circuit 11; the output end of the POE power supply switching circuit 11 is electrically connected to the power supply output port of the POE device 1; the input end of the POE power supply switching circuit 11 is used to access the adapter power supply detection signal of the client host.

[0071] In this embodiment, the POE device 1 also includes a circuit board 12 and an input network port 13, an isolation transformer 14, a network card chip 15, a first network transmission socket 16, a forward conversion component 17 and a power output socket 18 arranged on the circuit board 12; the input network port 13 is electrically connected to the network card chip 15 and the control chip 19 through the isolation transformer 14 respectively; the network card chip 15 is electrically connected to the first network transmission socket 16, and the control chip 19 is electrically connected to the power output socket 18 through the forward conversion component 17; the first network transmission socket 16 is connected to the input end of the POE power supply switching circuit 11, and is used to access the adapter power supply detection signal of the client host.

[0072] In this embodiment, a process of using a POE device for a thin client is as follows:

[0073] When the client side uses POE power supply, the control chip 19 performs a handshake with the power from the input network port 13. After the handshake is successful, the client side is powered via the forward converter component 17 and the power output socket 18.

[0074] When the client end uses the adapter for power supply, the POE power supply switching circuit 11 will detect that the adapter has been connected to the client end and is supplying power, and then the POE power supply switching circuit 11 will send a cut-off signal to the control chip 19, thereby cutting off the power output on the POE device.

[0075] In this embodiment, in order to increase the heat dissipation performance of the POE device, the forward conversion component 17 is vertically packaged on the circuit board 12; the heat dissipation component includes a heat sink 2, which is arranged on the circuit board 12 and adjacent to the forward conversion component 17. The circuit board 12 is provided with mounting points 20 distributed around the forward conversion component 17; the mounting points 20 are detachably connected to the heat sink 2. When providing POE power supply, the transistors of the voltage stabilizing circuit built on the secondary side of the forward conversion component 17 are the main source of heat, so the vertical packaging is adopted for it, and the heat sink 2 is used to improve the heat dissipation efficiency.

[0076] Please refer to Figure 2 , Embodiment 2 of the present utility model is:

[0077] A POE device for a thin client terminal, based on the above-mentioned embodiment 1, a POE power supply switching circuit 11 includes a comparator U1, a controller U2, a first resistor R1, a second resistor R2 and a MOS tube Q1; the output end of the comparator U1 is electrically connected to the controller U2, the controller U2 is electrically connected to the gate of the MOS tube Q1 through the first resistor R1, the drain of the MOS tube Q1 is electrically connected to the power supply output port of the POE device 1 through the second resistor R2, and the source of the MOS tube Q1 is grounded.

[0078] In this embodiment, the switching process of the POE power supply switching circuit 11 is as follows:

[0079] When the client is connected to the adapter for power supply, the voltage of the adapter power supply detection signal of the client host connected to one input end of the comparator U1 changes, which is greater than the threshold voltage connected to the other input end of the comparator U1, thereby changing the output of the comparator U1. After receiving the output change of the comparator U1, the controller U2 outputs a high-level signal on the first resistor R1, so that the MOS tube Q1 is turned on, thereby reducing the output voltage of the POE device 1.

[0080] When the client is not connected to the adapter for power supply, the voltage of the adapter power supply detection signal is the same as the threshold voltage, and the MOS tube Q1 remains cut off.

[0081] Please refer to Figure 3 , Embodiment 3 of the present utility model is:

[0082] A thin client host comprises a protective shell 3, a client motherboard 4, an adapter power supply socket 5 and a POE device for a thin client terminal according to the above-mentioned embodiment one or two; the POE device 1 and the client motherboard 4 are both arranged in the protective shell 3, a heat dissipation window 6 is provided on the protective shell 3, and the POE device 1 is adjacent to the heat dissipation window 6; the heat dissipation window 6 helps the POE device 1 to cool down quickly; at the same time, the installation point 20 is arranged as a screw installation hole extending from one side of the protective shell 3 adjacent to the heat dissipation window 6 to the other side, so as to facilitate the heat dissipation structure of the client motherboard 4 to conduct heat out of the heat dissipation window 6.

[0083] The client mainboard 4 is connected to the adapter power socket 5 and the power output port and the network output port of the POE device 1 respectively. The client mainboard 4 is provided with an adapter power detection component 9, the input end of the adapter power detection component 9 is connected to the adapter power socket 5, and the output end of the adapter power detection component 9 is connected to the input end of the POE power switching circuit 11. Among them, the adapter power detection component 9 is a jumper.

[0084] In this embodiment, if Figure 3 As shown, the protective housing 3 further includes a second network transmission socket 7 and a power input socket 8; the client mainboard 4 is electrically connected to the first network transmission socket 16 via the second network transmission socket 7; the second network transmission socket 7 is connected to the output end of the adapter power supply detection member 9. The client mainboard 4 is electrically connected to the power output socket 18 via the power input socket 8.

[0085] In this embodiment, if Figure 3As shown, the first network transmission socket 16 and the second network transmission socket 7 are arranged opposite to each other in the protective housing 3 for easy wiring. The connecting wire between the power input socket 8 and the power output socket 18 is shortened to reduce the loss during transmission when the overcurrent requirement under the required maximum power is met.

[0086] To sum up, the utility model provides a POE device for thin client side and a thin client host, and a POE power supply switching circuit is set. After detecting that the client host is connected to the adapter for power supply, the comparator, the controller and the on-off characteristics of the MOS tube are used to lower the POE power supply output, and the POE device is configured with a heat dissipation window and a heat sink to reduce its heating temperature during operation, reduce heat loss, realize flexible switching between adapter power supply and POE power supply, and avoid waste of resources.

[0087] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A POE device for a thin client, characterized in that: Including POE device and heat dissipation components; The heat dissipation component is arranged on the POE device, and the POE device includes a control chip and a POE power supply switching circuit; The POE power supply switching circuit includes a comparator, a controller, a first resistor, a second resistor and a MOS tube; The output end of the comparator is electrically connected to the controller, the controller is electrically connected to the gate of the MOS tube through the first resistor, the drain of the MOS tube is electrically connected to the power supply output port of the POE device through the second resistor, and the source of the MOS tube is grounded; The input end of the comparator is used to access the adapter power supply detection signal of the client host.

2. A POE device for a thin client according to claim 1, characterized in that: The POE device also includes a circuit board and an input network port, an isolation transformer, a network card chip, a first network transmission socket, a forward conversion component and a power supply output socket arranged on the circuit board; The input network port is electrically connected to the network card chip and the control chip respectively through the isolation transformer; The network card chip is electrically connected to the first network transmission socket, and the control chip is electrically connected to the power output socket through the forward conversion component; The first network transmission socket is connected to the input end of the POE power supply switching circuit and is used to access the adapter power supply detection signal of the client host.

3. A POE device for a thin client according to claim 2, characterized in that: The forward conversion component is vertically packaged on the circuit board; The heat dissipation component includes a heat sink, which is arranged on the circuit board and adjacent to the forward conversion component.

4. A POE device for a thin client according to claim 3, characterized in that: The circuit board is provided with mounting points distributed around the forward conversion component; The mounting point is detachably connected to the heat sink.

5. A thin client host, characterized in that: It comprises a protective shell, a client mainboard, an adapter power supply socket and a POE device for a thin client terminal as claimed in any one of claims 1 to 4; The POE device and the client mainboard are both arranged in the protective shell, a heat dissipation window is arranged on the protective shell, and the POE device is adjacent to the heat dissipation window; The client mainboard is respectively connected to the adapter power socket and the power output port and network output port of the POE device. An adapter power detection component is provided on the client mainboard. The input end of the adapter power detection component is connected to the adapter power socket, and the output end of the adapter power detection component is connected to the input end of the comparator.

6. A thin client host according to claim 5, characterized in that: The protective housing also includes a second network transmission socket; The client mainboard is electrically connected to the first network transmission socket via the second network transmission socket; the second network transmission socket is connected to the output end of the adapter power supply detection component.

7. A thin client host according to claim 5, characterized in that: The protective housing also includes a power input socket; The client mainboard is electrically connected to the power output socket via the power input socket.

8. A thin client host according to claim 6, characterized in that: The adapter power supply detection component is a jumper.

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