PoE switch supporting standard and non-standard power supply and PoE system

Abstract

The utility model discloses a PoE switch and a PoE system supporting standard and non-standard power supply, and relates to the PoE switch technology field, the PoE switch comprises a DC / DC converter and a power supply equipment PSE, the DC / DC converter is used for converting a standard power supply into a non-standard power supply; the PSE comprises a first PSE power management unit, a first power supply switch unit and a PSE control unit, the first power supply switch unit is connected with a standard power supply, the DC / DC converter and the first PSE power management unit, and the first PSE power management unit is used for being connected with a PD. The PSE control unit is connected with the first power supply switch unit and the first PSE power management unit; and the PSE control unit is used for controlling the working state of the first power supply switch unit, so that the standard power supply or the DC / DC converter is conducted with the first PSE power supply management unit. The power supply system not only supports power supply for standard power receiving equipment, but also supports power supply for non-standard power receiving equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of PoE switches, and in particular to a PoE switch and a PoE system supporting standard and non-standard power supply. Background Art

[0002] In recent years, artificial intelligence and smart homes have developed rapidly, and the demand for smart APs, network cameras, integrated monitoring, access control systems, and smart panels has continued to grow. Some of these devices comply with the standard PoE protocol, while others are non-standard, which has put higher requirements on the flexibility of network layout and power supply.

[0003] The POE switches currently on the market are designed to power standard powered devices (PDs). Non-standard power supply can only be achieved with non-standard power supply switches. Therefore, it is urgent to improve the existing POE switches to meet the needs of downstream terminals for standard and non-standard power supply. Utility Model Content

[0004] The embodiments of the utility model provide a PoE switch and a PoE system supporting standard and non-standard power supply, so as to solve the technical problem in the related art that the existing PoE switch does not support power supply to non-standard powered devices.

[0005] In a first aspect, a PoE switch supporting standard and non-standard power supply is provided, comprising:

[0006] A DC / DC converter connected to a standard power supply and used to convert the standard power supply into a non-standard power supply;

[0007] A power supply equipment PSE, comprising a first PSE power management unit, a first power switch unit and a PSE control unit, wherein the first power switch unit is connected to a standard power supply, the DC / DC converter and the first PSE power management unit, the first PSE power management unit is used to connect to a powered device PD, and the PSE control unit is connected to the first power switch unit and the first PSE power management unit;

[0008] The PSE control unit is used to control the working state of the first power switch unit to connect the standard power supply or the DC / DC converter to the first PSE power management unit.

[0009] In some embodiments, the first power switch unit includes a first switch, a second switch, a first switch controller, and a second switch controller;

[0010] The first switch is connected to the standard power supply and the first PSE power management unit, the first switch controller is connected to the standard power supply, the PSE control unit and the first switch, and the first switch controller is used to control the first switch to be turned on or off according to a control signal of the PSE control unit;

[0011] The second switch is connected to the DC / DC converter and the first PSE power management unit, the second switch controller is connected to the DC / DC converter, the PSE control unit and the second switch, and the second switch controller is used to control the second switch to be turned on or off according to a control signal of the PSE control unit.

[0012] In some embodiments, the PSE control unit includes a PSE controller, a serial-to-parallel conversion module, and a current detection module;

[0013] The current detection module is used to collect the current flowing between the first power switch unit and the first PSE power management unit, and feed back the collected current value to the PSE controller;

[0014] The serial-to-parallel conversion module is connected to the PSE controller, the first switch controller and the second switch controller.

[0015] In some embodiments, a first isolator is provided between the PSE controller and the serial-to-parallel conversion module.

[0016] In some embodiments, the current detection module is provided with a Hall sensor.

[0017] In some embodiments, both the first switch and the second switch are multi-channel MOSFETs.

[0018] In some embodiments, a second isolator is provided between the PSE controller and the first PSE power management unit.

[0019] In some embodiments, the power supply equipment PSE is provided with a plurality of output network ports for connecting to the powered device PD.

[0020] In some embodiments, the power supply equipment PSE further includes a second PSE power management unit and a second power switch unit, the second power switch unit is connected to a standard power supply, the DC / DC converter and the second PSE power management unit, the second PSE power management unit is used to connect to a powered device PD, and the PSE control unit is connected to the second power switch unit and the second PSE power management unit;

[0021] The PSE control unit is used to control the working state of the second power supply switch unit to connect the standard power supply or the DC / DC converter to the second PSE power management unit.

[0022] In a second aspect, a PoE system supporting standard and non-standard power supply is provided, including the aforementioned PoE switch supporting standard and non-standard power supply.

[0023] The beneficial effects brought by the technical solution provided by the utility model include:

[0024] The embodiment of the utility model provides a PoE switch and PoE system that support standard and non-standard power supply, wherein the PoE switch is provided with a DC / DC converter and a power supply device PSE, wherein the DC / DC converter is connected to a standard power supply and converts the standard power supply into a non-standard power supply, wherein the power supply device PSE includes a first PSE power management unit, a first power supply switch unit and a PSE control unit, wherein the PSE control unit can control the first power supply switch unit to make the standard power supply or the DC / DC converter conduct with the first PSE power management unit, thereby supplying power to the powered device PD. That is, the PoE switch of the utility model supports both power supply to standard powered devices and power supply to non-standard powered devices, can effectively be compatible with a variety of powered devices, and makes networking simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A functional block diagram of a PoE switch supporting standard and non-standard power supply provided by an embodiment of the utility model;

[0027] Figure 2 A circuit diagram of a PoE switch supporting standard and non-standard power supply provided by an embodiment of the utility model;

[0028] Figure 3 Another circuit diagram of a PoE switch supporting standard and non-standard power supply provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The embodiment of the utility model provides a PoE switch supporting standard and non-standard power supply, which can solve the technical problem that the existing PoE switch does not support power supply to non-standard powered devices.

[0031] See also Figure 1 As shown, an embodiment of the utility model provides a PoE switch supporting standard and non-standard power supply, including: a DC / DC converter and a power supply equipment PSE.

[0032] The DC / DC converter is connected to a standard power supply, and the DC / DC converter is used to convert the standard power supply into a non-standard power supply. Specifically, the standard power supply is usually a 53.5V DC power supply, which meets the standard PoE supply voltage. The DC / DC converter can be a step-down converter, and the DC / DC converter can convert the standard power supply into a 26V DC output.

[0033] The power supply equipment PSE includes a first PSE power management unit, a first power switch unit and a PSE control unit, the first power switch unit is connected to a standard power supply, the DC / DC converter and the first PSE power management unit, the first PSE power management unit is used to connect to a powered device PD, and the PSE control unit is connected to the first power switch unit and the first PSE power management unit.

[0034] The PSE control unit is used to control the working state of the first power switch unit to connect the standard power supply or the DC / DC converter to the first PSE power management unit.

[0035] Specifically, the first PSE power management unit will automatically detect the powered device PD. If the powered device PD is a powered device PD that complies with standard protocols such as IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt, the first PSE power management unit will feedback the normal detection result to the PSE control unit. The PSE control unit controls the working state of the first power switch unit to connect the standard power supply to the first PSE power management unit. The first PSE power management unit will power the powered device PD according to the standard protocol. If the powered device PD is a powered device PD that does not comply with standard protocols such as IEEE 802.3af, IEEE802.3at, and IEEE 802.3bt, it is processed according to non-standard power supply. The first PSE power management unit detects an abnormality and feeds back the abnormality detection result to the PSE control unit. The PSE control unit controls the working state of the first power switch unit to make the DC / DC converter and the standard power supply connected to the first PSE power management unit in sequence, and determines whether the power supply is successful by detecting the current between the first power switch unit and the first PSE power management unit. If successful, the first PSE power management unit uses the DC / DC converter or the standard power supply to force the powered device PD to power on. If unsuccessful, the first PSE power management unit prompts that power cannot be supplied and asks staff to check.

[0036] The PoE switch supporting standard and non-standard power supply in the embodiment of the utility model is provided with a DC / DC converter and a power supply device PSE, wherein the DC / DC converter is connected to a standard power supply and converts the standard power supply into a non-standard power supply, and the power supply device PSE includes a first PSE power management unit, a first power switch unit and a PSE control unit, and the PSE control unit can control the first power switch unit to make the standard power supply or the DC / DC converter conduct with the first PSE power management unit, thereby supplying power to the powered device PD. That is, the PoE switch of the utility model supports power supply to both standard powered devices and non-standard powered devices, can effectively be compatible with a variety of powered devices, and is simpler to network.

[0037] As an optional implementation, in a utility model embodiment, see Figure 2 As shown, the first power switch unit includes a first switch, a second switch, a first switch controller and a second switch controller. The first switch and the second switch may be multi-channel MOSFETs.

[0038] The first switch is connected to a standard power supply and the first PSE power management unit, the first switch controller is connected to a standard power supply, the PSE control unit and the first switch, and the first switch controller is used to control the first switch to be turned on or off according to a control signal of the PSE control unit.

[0039] The second switch is connected to the DC / DC converter and the first PSE power management unit, the second switch controller is connected to the DC / DC converter, the PSE control unit and the second switch, and the second switch controller is used to control the second switch to be turned on or off according to a control signal of the PSE control unit.

[0040] Further, see Figure 2 As shown, the PSE control unit includes a PSE controller, a serial-to-parallel conversion module and a current detection module.

[0041] The current detection module is used to collect the current flowing between the first power supply switch unit and the first PSE power management unit, and feed back the collected current value to the PSE controller.

[0042] The serial-to-parallel conversion module is connected to the PSE controller, the first switch controller and the second switch controller.

[0043] See also Figure 2 As shown, the GPIO1 pin of the serial-to-parallel conversion module is connected to the OFF pin of the first switch controller, the GPIO2 pin of the serial-to-parallel conversion module is connected to the OFF pin of the second switch controller, the IN pin of the first switch controller and the input end of the first switch are connected to the standard power supply, and the output end of the first switch is connected to the first PSE power management unit. When the GPIO1 pin of the serial-to-parallel conversion module outputs a high level, the first switch controller controls the first switch to be turned on, so that the first PSE power management unit is connected to the standard power supply. Similarly, when the GPIO2 pin of the serial-to-parallel conversion module outputs a high level, the second switch controller controls the second switch to be turned on, so that the first PSE power management unit is connected to the DC / DC converter.

[0044] Specifically, the first PSE power management unit automatically detects the powered device PD. If the powered device PD is a powered device PD that does not comply with standard protocols such as IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt, it is processed according to non-standard power supply. The first PSE power management unit will feedback the abnormal detection result to the PSE controller. The PSE controller controls the working state of the first power switch unit, so that the DC / DC converter and the standard power supply are turned on with the first PSE power management unit in sequence, and detects the current of the first power switch unit and the first PSE power management unit through the current detection module to determine whether the power supply is successful. Specifically, the PSE controller first reads the current between the first power switch unit and the first PSE power management unit through the current detection module, the PSE controller controls the second switch controller to turn on the second switch, the DC / DC converter supplies power, and the PSE controller reads whether the current between the second switch and the first PSE power management unit increases by more than 50mA (assuming that the power consumption of the powered device exceeds 1.3W). If it increases, it indicates that the power supply is successful. If the current has hardly changed, the PSE controller controls the first switch controller to turn on the first switch, and the standard power supply is used for power supply. The PSE controller then reads whether the current between the first switch and the first PSE power management unit increases by more than 25mA (assuming that the power consumption of the powered device exceeds 1.3W). If it increases, the power supply is successful. If not, the first PSE power management unit prompts that power cannot be supplied, and asks the staff to check. Optionally, the current detection module is provided with a Hall sensor. The Hall sensor has high measurement accuracy and can accurately measure the current between the first power supply switch unit and the first PSE power management unit.

[0045] Furthermore, the power supply equipment PSE of the embodiment of the utility model can be further expanded to further set up a second PSE power management unit and a second power switch unit. Figure 3 As shown, the power supply equipment PSE is provided with a first PSE power management unit, a second PSE power management unit, a first power switch unit and a second power switch unit, and the corresponding serial-to-parallel conversion module corresponds to the extended GPIO3 pin and the GPIO4 pin. Table 1 is the working status of the first PSE power management unit, the second PSE power management unit, the first power switch unit and the second power switch unit when the GPIO4 pin, the GPIO3 pin, the GPIO2 pin and the GPIO1 pin output different high and low levels.

[0046] Table 1

[0047]

[0048]

[0049] As an optional implementation, in a utility model embodiment, see Figure 2 and Figure 3 As shown, a first isolator is provided between the PSE controller and the serial-to-parallel conversion module. A second isolator is provided between the PSE controller and the first PSE power management unit. The first isolator is used to isolate the control signal of the PSE controller and output it to the serial-to-parallel conversion module, and the second isolator is used to isolate the transmission signal between the PSE controller and the first PSE power management unit. The first isolator and the second isolator can be optical coupler isolation chips, which can effectively isolate input and output, prevent direct electrical connection between circuits, enhance anti-interference ability, and improve safety and stability.

[0050] As an optional implementation, in one embodiment of the utility model, the power supply equipment PSE is provided with a plurality of output network ports for connecting to the powered device PD, and a network isolation transformer is provided between each of the output network ports and the corresponding PSE power management unit. Figure 2 and Figure 3 As shown, the first PSE power management unit and the second PSE power management unit are connected to four output network ports respectively, and the eight output network ports can supply power to the powered device PD according to demand. Optionally, the output network port is an RJ45 interface.

[0051] The embodiment of the utility model further provides a PoE system supporting standard and non-standard power supply, including the aforementioned PoE switch supporting standard and non-standard power supply.

[0052] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0053] It should be noted that, in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A PoE switch that supports standard and non-standard power supply, characterized in that: include: A DC / DC converter connected to a standard power supply and used to convert the standard power supply into a non-standard power supply; A power supply equipment PSE, comprising a first PSE power management unit, a first power switch unit and a PSE control unit, wherein the first power switch unit is connected to a standard power supply, the DC / DC converter and the first PSE power management unit, the first PSE power management unit is used to connect to a powered device PD, and the PSE control unit is connected to the first power switch unit and the first PSE power management unit; The PSE control unit is used to control the working state of the first power switch unit to connect the standard power supply or the DC / DC converter to the first PSE power management unit.

2. The PoE switch supporting standard and non-standard power supply according to claim 1, characterized in that: The first power supply switch unit includes a first switch, a second switch, a first switch controller and a second switch controller; The first switch is connected to the standard power supply and the first PSE power management unit, the first switch controller is connected to the standard power supply, the PSE control unit and the first switch, and the first switch controller is used to control the first switch to be turned on or off according to a control signal of the PSE control unit; The second switch is connected to the DC / DC converter and the first PSE power management unit, the second switch controller is connected to the DC / DC converter, the PSE control unit and the second switch, and the second switch controller is used to control the second switch to be turned on or off according to a control signal of the PSE control unit.

3. The PoE switch supporting standard and non-standard power supply according to claim 2, characterized in that: The PSE control unit includes a PSE controller, a serial-to-parallel conversion module and a current detection module; The current detection module is used to collect the current flowing between the first power switch unit and the first PSE power management unit, and feed back the collected current value to the PSE controller; The serial-to-parallel conversion module is connected to the PSE controller, the first switch controller and the second switch controller.

4. The PoE switch supporting standard and non-standard power supply according to claim 3, characterized in that: A first isolator is provided between the PSE controller and the serial-to-parallel conversion module.

5. The PoE switch supporting standard and non-standard power supply according to claim 3, characterized in that: The current detection module is provided with a Hall sensor.

6. The PoE switch supporting standard and non-standard power supply according to claim 2, characterized in that: The first switch and the second switch are both multi-channel MOSFETs.

7. The PoE switch supporting standard and non-standard power supply according to claim 3, characterized in that: A second isolator is provided between the PSE controller and the first PSE power management unit.

8. The PoE switch supporting standard and non-standard power supply according to claim 1, characterized in that: The power supply equipment PSE is provided with a plurality of output network ports for connecting with the powered device PD.

9. The PoE switch supporting standard and non-standard power supply according to claim 1, characterized in that: The power supply equipment PSE also includes a second PSE power management unit and a second power switch unit, the second power switch unit is connected to the standard power supply, the DC / DC converter and the second PSE power management unit, the second PSE power management unit is used to connect to the powered device PD, and the PSE control unit is connected to the second power switch unit and the second PSE power management unit; The PSE control unit is used to control the working state of the second power supply switch unit to connect the standard power supply or the DC / DC converter to the second PSE power management unit.

10. A PoE system supporting standard and non-standard power supply, characterized in that: A PoE switch supporting standard and non-standard power supply comprising the PoE switch described in any one of claims 1-9.

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