CN109150551B - Non-standard POE power supply circuit, power supply equipment and power supply method for network port - Google Patents

Abstract

The invention belongs to the technical field of Ethernet power supply, and provides a non-standard POE power supply circuit, power supply equipment and a power supply method for a network port; non-standard POE supply circuit and POE power and net twine interface connection, net twine interface includes net gape signal line and net gape power cord, and non-standard POE supply circuit includes: the power supply device comprises a switching module, a power-on detection module, a control module, a power-off detection module and a power supply module; when the powered device is not powered on, the power-on detection module can detect whether the powered device is accessed to the network cable interface; after the network cable interface is connected to the powered device, the control module generates a power supply enabling signal, and the power supply module outputs a power supply signal of the POE power supply to a network port power line according to the power supply enabling signal; after the power receiving equipment is normally communicated with the network cable interface, the power-on detection module can be disconnected with the network cable interface signal wire through the control module; the invention solves the problems of higher power supply cost and lower flexibility of the traditional POE power supply circuit.

Description

Non-standard POE power supply circuit, power supply equipment and power supply method for network port

Technical Field

The invention belongs to the technical field of power over Ethernet, and particularly relates to a non-standard POE power supply circuit, power supply equipment and a power supply method for a network port.

Background

With the rapid development of network communication, ethernet is used as a novel network media transmission mode, and because of the advantages of fast data transmission rate and capability of performing remote communication, the ethernet has become the mainstream communication mode of the current network equipment; in an Ethernet communication system, a mobile device needs to access a Power supply in real time to realize a corresponding physical function, a POE Power Over Ethernet (POE Power Over Ethernet) circuit is generally adopted in the conventional technology to realize a charging process for the mobile device, and the POE Power supply circuit can provide stable direct current electric energy for a mobile terminal under the condition that the existing Ethernet wiring infrastructure is not changed at all so as to ensure that the mobile device and external communication equipment can perform normal communication operation; since the mobile device can access stable power through the POE power supply circuit, POE power supply has become a main power supply specification of the communication device.

According to the power supply principle of the POE system in the conventional technology, the POE system includes two parts: PSE (Power Sourcing Equipment) and PD (Powered Device) devices; the PSE equipment serves as a manager in the Ethernet power supply process, and when the POE system works normally, the PSE equipment converts an external power supply into a stable and reliable direct-current power supply so as to supply power to the PD equipment; however, the POE power supply circuit in the conventional art has at least the following problems: 1. in a standard POE power supply circuit, a PSE chip is inevitably arranged in PSE equipment, and a power supply is managed through the PSE chip so as to realize the charging process of PD equipment; because the PSE chip in the PSE device has an integrated circuit structure, the manufacturing cost of the PSE chip is high, and if the POE power supply circuit includes the PSE chip, the manufacturing cost of the POE power supply circuit is greatly increased; 2. because the function of the PSE chip is fixed after leaving the factory, the PSE chip can only provide POE voltage within a protocol specified range to the PD device, for example, the amplitude range of the POE power supply is 36V-53V, and in the practical application process, because the types of the PD devices are different, the PD devices have different rated working voltages, therefore, if the POE power supply circuit adopts a standard PSE chip to supply power to the PD device, the POE voltage output by the PSE chip cannot meet the power supply voltage requirements of different types of PD devices, and further the POE power supply circuit cannot be compatible and applicable to PD devices with different voltage requirements, so that the traditional POE power supply circuit has low flexibility, the compatibility of the circuit structure is poor, and the power supply circuit cannot be universally applicable to mobile devices of different types; 3. in the power supply process of the non-standard PSE equipment, the network port idle line pairs (such as the network port idle line pairs 4&5 and the network port idle line pairs 7&8) in the POE system directly carry strong current, if the network port idle line pairs have short-circuit faults, the electronic equipment in the POE power supply circuit can be burnt by the strong current, and then the traditional POE power supply circuit has larger electric shock risk and endangers the power-on safety of the PD equipment.

Disclosure of Invention

The invention provides a non-standard POE power supply circuit, power supply equipment and a power supply method for a network port, and aims to solve the problems that in the prior art, the power supply cost of the POE power supply circuit is high, the circuit structure of the POE power supply circuit cannot be suitable for PD equipment with different voltage requirements, the compatibility is poor, the flexibility is low, and the power supply safety is low.

The first aspect of the present invention provides a non-standard POE power supply circuit for a network port, where the non-standard POE power supply circuit is connected to a POE power source and a network cable interface, the network cable interface includes a network port signal line and a network port power line, and the non-standard POE power supply circuit includes:

the switching module is connected with the network port signal line and used for generating a SWITCH _ LED signal when the power receiving equipment is in normal communication with the network cable interface;

the power-on detection module is connected with the network port signal line and used for detecting whether the power receiving equipment is accessed to the network port interface or not when no SWITCH _ LED signal exists;

the control module is connected with the power-on detection module and used for disconnecting the power-on detection module from the network port signal line and generating a power supply enabling signal when the SWITCH _ LED signal exists, or generating the power supply enabling signal when the SWITCH _ LED signal does not exist and the network cable interface is connected to the powered device;

a power-off detection module, connected to the switching module and the control module, for detecting whether the powered device and the network cable interface are disconnected after the power-on detection module is disconnected from the network port signal line; and

the power supply module is connected with the POE power supply, the control module and the network port power line and used for outputting the power signal of the POE power supply to the powered device through the network port power line according to the power enabling signal.

A second aspect of the present invention provides a power supply apparatus configured to power on a powered device, the power supply apparatus including: the non-standard POE power supply circuit for the internet access, the POE power supply connected with the non-standard POE power supply circuit and the network cable interface connected with the non-standard POE power supply circuit are arranged in the network interface.

The third aspect of the present invention provides a non-standard POE power supply method for a network port, where the network cable interface includes a network port signal line and a network port power line, and the non-standard POE power supply method includes the following steps:

detecting whether a power receiving device is accessed to the network cable interface through the network port signal line;

if the network cable interface is connected to the powered device, generating a power supply enabling signal;

outputting a power supply signal of a POE power supply to the power line of the network port according to the power supply enabling signal;

and if the power receiving equipment is in normal communication with the network cable interface, stopping detecting whether the network cable interface has the power receiving equipment access.

The non-standard POE power supply circuit for the network port comprises a plurality of discrete circuit modules: the power supply device comprises a switching module, a power-on detection module, a control module, a power-off detection module and a power supply module; the switching _ LED signal generated by the switching module can be used to obtain the communication state of the network cable interface, and if the powered device is successfully powered on and successfully communicates with the network cable interface, the switching module generates the switching _ LED signal, so that the non-standard POE power supply circuit can monitor whether the powered device is successfully powered on in real time through the switching module; on one hand, when the powered device fails to be powered on, the connection state of the powered device and the network cable interface is detected through the detection module, if the network cable interface is connected to the powered device, the control module generates a power supply enabling signal, and the power supply module starts to provide a power supply signal for the power supply device according to the power supply enabling signal so as to realize the power-on process of the powered device; on the other hand, if the communication between the powered device and the network cable interface is successful, the control module disconnects the power-on detection module from the network port signal line, so that the interference of the detection operation of the power-on detection module on the network communication of the network cable interface is avoided, the safe communication process of the network cable interface is ensured, and the power supply module continuously provides direct-current electric energy to the powered device according to the power supply enabling signal so as to maintain the stable power-on process of the powered device; therefore, the communication state and the physical connection state of the power supply circuit can be monitored and adjusted by combining the detection module (comprising the power-on detection module and the power-off detection module) and the exchange module, and the detection module only needs extremely low power supply voltage in the process of detecting the physical connection state between the powered device and the network cable interface, and the network port power line pair on the network cable interface does not need to be directly provided with strong electricity, so that the electric shock risk caused by the short circuit of the network port power line pair is reduced, and the physical safety of the POE power supply circuit is greatly protected; meanwhile, the power supply process of the power supply circuit can be managed and adjusted by combining the control module and the power supply module, the non-standard POE power supply circuit adopts a plurality of discrete circuit modules to realize the power supply function of the traditional power supply equipment, a PSE chip is not needed, and the application cost is low; the power supply output by the non-standard POE power supply circuit can be adjusted according to the working voltage of the powered device, can be compatible and suitable for the powered devices with different rated voltages, and has wide application range and strong flexibility; therefore, the non-standard POE power supply circuit can transmit rated electric energy to the powered device according to the working voltage requirement of the powered device, can supply power to various mobile terminals, and has extremely high compatibility; the problem of standard POE power supply circuit must rely on the PSE chip to supply power the management in the traditional art effectively, and then lead to POE power supply circuit's power supply cost higher, the flexibility is lower, and the power supply mode that realizes can't be applicable to the powered device that has different operating voltage scopes, and compatibility is relatively poor is solved.

Drawings

Fig. 1 is a block diagram of a non-standard POE power supply circuit for a network port according to an embodiment of the present invention;

fig. 2 is a circuit structure diagram of a power-on detection module according to an embodiment of the present invention;

FIG. 3 is a circuit diagram of a power-off detection module according to an embodiment of the present invention;

fig. 4 is a circuit structure diagram of a control module according to an embodiment of the present invention;

fig. 5 is a circuit structure diagram of a power supply module according to an embodiment of the present invention;

fig. 6 is a block diagram of a power supply device according to an embodiment of the present invention;

fig. 7 is a flowchart of an implementation of a non-standard POE power supply method for a network port according to an embodiment of the present invention.

Detailed Description

In the conventional art, a standard POE power supply circuit is used as an independent circuit device, which mainly implements a power management function through a PSE chip, and exemplarily, the model of the PSE chip includes: TPS2384 series, TPS23861 series; however, since the internal circuit structure of the PSE chip is fixed in the design and manufacturing process, the circuit function realized by the PSE chip cannot be adjusted at will according to the power supply requirement of the powered device, when a technician applies the PSE chip to a standard POE power supply circuit, the standard POE power supply circuit can only realize a preset power conversion function on the power supply, the standard POE power supply circuit can only realize the power-on process for a specific powered device, and the compatibility is low; and because the function of PSE chip is complicated, the inner circuit structure of PSE chip contains numerous electronic components, standard POE power supply circuit is in the power supply in-process, if operation trouble appears in certain function in the PSE chip, then need carry out whole change with the PSE chip in the circuit, so that normal power supply function can be realized to standard POE power supply circuit, and PSE chip manufacturing cost is higher, consequently, in the conventional art, standard POE power supply circuit must contain the PSE chip, the power supply cost is higher, the suitability universality of POE power supply has been reduced.

Based on the above problem, an embodiment of the present invention provides a non-standard POE power supply circuit for a network port, where the non-standard POE power supply circuit uses a discrete circuit module to replace a PSE chip, so as to implement a power-on process to a powered device; the embodiment of the invention not only greatly reduces the power supply cost of the POE power supply circuit, but also greatly improves the flexibility of the circuit structure, and the non-standard POE power supply circuit can be suitable for power receiving equipment with different working voltages and has extremely strong compatibility; specifically, fig. 1 shows a module structure of a non-standard POE power supply circuit 10 for a network port, as shown in fig. 1, the non-standard POE power supply circuit 10 is connected to a POE power source 20 and a network cable interface 30, the POE power source 20 is configured to provide power, the POE power source 20 transmits stable dc power to a powered device 40 through the network cable interface 30, specifically, the network cable interface 30 includes a communication port and a network transformer chip, where the communication port may be an RJ45 port; the communication port in the network cable interface 30 includes a network port signal line and a network port power line, the network port signal line can be used for network communication between the network cable interface 30 and external electronic equipment, wherein, a free line in the network cable interface 30 is used as the network port power line, and the network port power line is used for realizing electric energy transmission, and stable electric energy can be transmitted to the powered device 40 through the network port power line, so as to realize the power-on operation of the powered device 40.

As shown in fig. 1, the non-standard POE power supply circuit 10 includes: the power supply system comprises a switching module 101, a power-on detection module 102, a control module 103, a power-off detection module 104 and a power supply module 105; the switching module 101 is connected to a network port signal line in the network cable interface 30, and when the powered device 40 is in normal communication with the network cable interface 30, the switching module 101 generates a SWITCH _ LED signal; specifically, the switching module 101 is connected to a network port signal line in the network cable interface 30, and after the POE power supply 20 transmits the power signal to the powered device 40 and the switching module 101 can perform information interaction with the network cable interface 30, the communication state of the network cable interface 30 can be obtained through a SWITCH _ LED signal generated by the switching module 101; if the powered device 40 and the network cable interface 30 realize normal communication, it indicates that the powered device 40 has been powered on successfully, and at this time, the switching module 101 generates a SWITCH _ LED signal; on the contrary, if the powered device 40 does not access the power signal, at this time, the powered device 40 cannot perform normal communication with the network port interface 30, which indicates that the powered device 40 fails to be powered on or the powered device 40 is suddenly interrupted in the power-on process, and at this time, the switching module 101 does not generate the SWITCH _ LED signal; therefore, in the embodiment of the present invention, the non-standard POE power supply circuit 10 can accurately determine the communication state of the network cable interface 30 according to the SWITCH _ LED signal, thereby implementing real-time monitoring of the power-on state of the powered device 40, so that the non-standard POE power supply circuit 10 can perform efficient power-on operation on the powered device 40.

The power-on detection module 102 is connected to the network port signal line, if the switching module 101 does not generate a SWITCH _ LED signal, the power-on of the powered device 40 fails, the power-on detection module 102 can detect whether the powered device 40 is connected to the network port 30, and the power-on detection module 102 generates a power-on detection signal, where the power-on detection signal includes a detection result of the power-on detection module 102, and according to a level state of the power-on detection signal, the power-on detection signal can be obtained: when the powered device 40 fails to be powered on, a physical connection state between the powered device 40 and the network cable interface 30, for example, when the power detection module 102 detects that the powered device 40 and the network cable interface 30 are successfully connected, the power detection signal is in a first level state, optionally, the first level state of the power detection signal may be in a high level state or a low level state, which is not limited to this, and at this time, the network cable interface 30 and the powered device 40 have already been physically connected; if the switching module 101 has generated the SWITCH _ LED signal, the powered device 40 can already realize the function of normal communication, and the powered device 40 must already be connected to the network cable interface 30, and the power-on detection module 102 does not need to detect whether the powered device 40 and the network cable interface 30 are physically connected, so that the power-on detection module 102 in the embodiment of the present invention accurately detects the physical connection state of the powered device 40 and the network cable interface 30, and has extremely high detection efficiency, and the power supply efficiency of the non-standard POE power supply circuit 10 is improved; as described above, when the switching module 101 does not generate the SWITCH _ LED signal, at this time, the powered device 40 fails to power up, and at this time, the power up detection module 102 detects whether the powered device 40 is inserted into the network cable interface 30, so as to determine whether the powered device 40 completes the power up preparation work; if the power-on detection module 102 detects that the powered device 40 has completed power-on preparation, that is, the network cable interface 30 has the powered device 40 connected thereto, and the power-on detection module 102 transmits the power-on detection signal to the control module 103, the non-standard POE power supply circuit 10 can perform the next power-on process on the powered device 40, so as to improve the power-on safety of the powered device 40.

As a more specific embodiment, the power-on detection module 102 detects whether the power receiving device 40 is accessed to the cable interface 30 according to the detection enable signal; the working state of the power-on detection module 102 is controlled by detecting the enable signal, and because the detection enable signal has different level states, when the detection enable signal is in different level states, the power-on detection module 102 is also in different working states; for example, when the switching module 101 does not generate the SWITCH _ LED signal, the detection enable signal is in the first level state, the power-on detection module 102 is driven by the detection enable signal to detect the physical connection state between the network cable interface 30 and the powered device 40, and the power-on detection module 102 generates the power-on detection signal according to the detection result; when the switching module 101 generates the SWITCH _ LED signal, the powered device 40 is powered on successfully, and the detection enable signal is in the second level state, at this time, the power-on detection module 102 no longer detects the physical connection state of the network cable interface 30 and the powered device 40, so as to ensure that the network communication of the network cable interface 30 is not interfered during the power-on process, and reduce the static loss caused by the power-on detection module 102; therefore, in the embodiment of the present invention, the power-on detection module 102 can be in a working or stop state by detecting the enable signal, which not only guarantees the power-on safety of the powered device 40, but also guarantees the normal network communication of the network cable interface 30.

It should be noted that the first level state of the detection enable signal may be a high level state or a low level state, which is not limited; if the first level state of the detection enable signal is a high level state, the second level state is a low level state.

In the embodiment of the present invention, the power-on detection module 102 performs a detection process on the physical connection state between the network cable interface 30 and the powered device 40, and the power-on detection module 102 only needs a very low power supply, such as a 3.3V dc power supply, so that the network port power line on the network cable interface 30 is not directly powered by strong current (36V-57V); the network port power line only needs very low power supply voltage, and the electrification detection module 102 can detect the physical connection state of the network port interface 30 and the powered device 40 in real time, so that the electric shock risk of the network port power line pair caused by short circuit is reduced, the problem that the electronic device is burnt by strong electricity in short circuit fault is further prevented, and the physical safety of the electronic device in the power supply process in the non-standard POE power supply circuit 10 is effectively guaranteed.

The control module 103 is connected to the power-on detection module 102, when the switching module 101 generates a SWITCH _ LED signal, the powered device 40 is inserted into the powered device 40 at this time, and the powered device 40 is powered on successfully, the control module 103 disconnects the power-on detection module 102 from the network port signal line, so that the power-on detection module 102 no longer detects whether the powered device 40 is connected to the network interface 30, so as to prevent the detection operation of the power-on detection module 102 from interfering with the network communication of the network interface 30, ensure that the network interface 30 can perform a normal data interaction function with an external device during the power-on process, and the control module 103 generates a power enable signal, where the power enable signal is in a first level state, and the non-standard POE power supply circuit 10 can be driven by the power enable signal to continue the power-on operation of the powered device 40.

If the switching module 101 does not generate the SWITCH _ LED signal, the powered device 40 fails to be powered on, at this time, the power-on detection module 102 transmits the power-on detection signal to the control module 103, because the power-on detection signal includes the physical connection information between the cable interface 30 and the powered device 40, when the power-on detection module 102 detects that the cable interface 30 has the powered device 40 connected thereto, it indicates that the powered device 40 has completed power-on preparation work, the control module 103 generates a power enable signal, the power enable signal is in a first level state, and the POE power source 20 can indirectly transmit electric energy to the powered device 40 through the power enable signal, so as to implement the power-on process of the powered device 40; on the contrary, if the power-on detection module 102 detects that the network cable interface 30 is not accessed by the powered device 40, the powered device 40 does not complete the power-on preparation work, the control module 103 generates a power enable signal, and the power enable signal is in the second level state, the non-standard POE power supply circuit 10 does not transmit the dc power to the powered device 40, and the control module 103 generates a detection enable signal, which is in the first level state, and the control module 103 transmits the detection enable signal to the power-on detection module 102, and drives the power-on detection module 102 to detect whether the powered device 40 is accessed by the network cable interface 30 through the detection enable signal, so that the power-on detection module 102 can detect the connection state between the powered device 40 and the network cable interface 30 in time, complete the power-on preparation work of the powered device 40, and enable the powered device 40 to be powered on quickly.

In the embodiment of the present invention, the control module 101 has signal processing and converting functions, and can manage and control the power-on process of the powered device 40; meanwhile, the control module 101 can also generate a detection enable signal and a power enable signal, control the operating state of the power-on detection module 102 by the detection enable signal, and control the power-on state of the powered device 40 by the level state of the power enable signal; therefore, the non-standard POE power supply circuit 10 in the embodiment of the present invention is simple and convenient to operate, and can greatly improve the power-on efficiency of the powered device 40 and ensure the power-on safety of the powered device 40.

The power-off detection module 104 is connected to the switching module 101 and the control module 103, and when the power-on detection module 102 is disconnected from the network port signal line, the power-off detection module 101 detects whether the powered device 40 and the network cable interface 30 are disconnected; specifically, as described above, the SWITCH _ LED signal generated by the switching module 101 can obtain the network communication state of the network cable interface 30, so as to determine whether the powered device 40 is powered on successfully; if the powered device 40 has been powered on successfully, at this time, the control module 103 disconnects the power-on detection module 102 from the network port signal line, and the power-on detection module 102 cannot detect the physical connection state between the network cable interface 30 and the powered device 40 after the power-on is successfully powered on, then the switching module 101 transmits the SWITCH _ LED signal to the power-off detection module 104, and the power-off detection module 104 can continue to detect whether the powered device 40 is disconnected from the network cable interface 30 after the power-on is successfully powered on; in the embodiment of the present invention, when the power-off detection module 104 detects that the powered device 40 is suddenly disconnected from the network cable interface 30, the power-off detection module 104 immediately generates a power-off detection signal, where the power-off detection signal is in a first level state, and the power-off detection module 104 transmits the power-off detection signal to the control module 103, so that the POE power source 20 cannot continuously transmit the power signal to the powered device 40, and a network cable in the network cable interface 30 is prevented from carrying a strong current in a power-on interruption process, so as to protect the physical security of the network cable interface 30; therefore, in the embodiment of the present invention, the physical connection state between the powered device 40 and the network cable interface 30 after the power is successfully powered up can be obtained through the power-off detection signal generated by the power-off detection module 104; therefore, the non-standard POE power supply circuit 10, in combination with the power-on detection module 102 and the power-off detection module 104, can detect the physical connection state of the powered device 40 and the network cable interface 30 no matter before the powered device 40 is powered on successfully or after the powered on successfully; in conjunction with the foregoing, the control module 103 implements adaptive control and management of the power-on process of the powered device 40 according to the power-on detection signal and the power-off detection signal, so as to implement safe power-on of the powered device 40.

The power supply module 105 is connected with the POE power supply 20, the control module 103 and a network port power line of the network cable interface 30, the control module 103 transmits a power enable signal to the power supply module 105, wherein the power enable signal can drive the power supply module 105 to realize an electric energy transmission function; therefore, when the power enable signal is in the first level state, the power supply module 105 is turned on, and the power supply module 105 outputs the power signal of the POE power source 20 to the network port power line according to the power enable signal, so as to transmit the stable power signal to the powered device 40 through the network interface 30, thereby implementing the power-on operation of the powered device 40; when the power enable signal is in the second level state, the power supply module 105 is turned off, the POE power source 20 cannot transmit the power signal to the powered device 40 through the network port power line, and the powered device 40 is not in the powered state at this time; therefore, in the embodiment of the present invention, the power supply module 105 can drive the POE power source 20 to stably charge the powered device 40 according to the power enable signal, and the powered device 40 enters a power-on phase, so that a safe and fast power-on operation of the powered device 40 can be realized through the power supply module 105.

According to the circuit structure of the non-standard POE power supply circuit 10, in the embodiment of the present invention, the power-on process of the powered device 40 is implemented by using separate circuit modules, and the physical connection state and the power supply state of the network cable interface 30 and the powered device 40 can be accurately detected by using the power-on detection module 102, the power-off detection module 104, and the switching module 101; in the process that the power-on detection module 102 detects the physical connection state between the powered device 40 and the network cable interface 30, the power-on detection module 102 only needs a very low power supply voltage, and the network cable power line pair does not directly carry strong current, so that the risk of electric shock caused by short circuit of the network cable power line pair is reduced, and the power-on safety of the powered device 40 is ensured; the control module 103 can manage and control the power-on process of the powered device 40 according to the power-on detection signal and the power-off detection signal, when the network cable interface 30 is connected to the powered device 40, the control module 103 transmits the power enable signal to the power supply module 105, the power supply module 105 outputs the power signal of the POE power supply 20 to the network port power line according to the power enable signal, so as to realize the fast and stable power-on process of the powered device 40, and the POE power supply 20 transmits the stable electric energy to the powered device 40 through the power supply module 105; meanwhile, after the powered device 40 is normally communicated with the network cable interface 30, the control module 103 disconnects the power-on detection module 102 from the network cable interface signal line in time, and the power-on detection module 102 stops working, so that the detection operation of the power-on detection module 102 is ensured not to influence the network communication of the network cable interface 30, and the network cable interface 30 can always keep normal data communication with external devices in the normal power-on process of the powered device 40; therefore, the non-standard POE power supply circuit 10 in the embodiment of the present invention employs a separate circuit module to control and manage the power-on process of the powered device 40, and a PSE chip is not required, which greatly reduces the manufacturing cost and application cost of the non-standard POE power supply circuit 10, and the power supply output by the non-standard POE power supply circuit 10 in the embodiment of the present invention can be adjusted according to the working voltage of the powered device 40, and is compatible and applicable to powered devices with different rated voltages, so as to provide the most appropriate power supply to the powered device 40, and the present invention has strong flexibility, can be universally applied to various types of powered devices, and has strong compatibility; thereby it must rely on the PSE chip to just can manage and control the power-on process of PD equipment to have solved POE power supply circuit among the conventional art effectively, and then lead to POE power supply circuit's industrial manufacturing cost and practical application cost all higher, this POE power supply circuit's fixed structure, can't supply power for the PD equipment that has different operating voltage, and compatibility is poor, and the flexibility is low to and the problem that PD equipment can't obtain the guarantee at last power-on in-process power-on safety.

As a specific implementation manner, the outage detection module 104 detects whether the powered device 40 and the network cable interface 30 are disconnected, specifically, when the powered device 40 is powered on, the switching module 101 performs data communication with the network cable signal line, the switching module 101 generates a SWITCH _ LED signal and outputs the SWITCH _ LED signal to the outage detection module 104, the outage detection module 104 performs RC filtering on the SWITCH _ LED signal to obtain a stable outage detection signal, and the outage detection module 104 determines whether the powered device 40 and the network cable interface 30 are disconnected according to the outage detection signal; as described above, in the process of powering on the powered device 40, since the SWITCH _ LED signal generated by the switching module 101 includes communication connection information of the powered device 40, a stable power-off detection signal can be output after RC filtering, and the level state of the power-off detection signal has a one-to-one correspondence relationship with the physical connection state of the network cable interface 30, for example, when the powered device 40 is suddenly disconnected from the network cable interface 30, the switching module 101 cannot generate the SWITCH _ LED signal, the power-off detection signal is in the first level state, and when the powered device 40 is not disconnected from the network cable interface 30, the switching module 101 outputs the SWITCH _ LED signal, and the power-off detection signal is in the second level state; therefore, the power outage detection module 104 can accurately determine whether the powered device 40 and the network cable interface 30 are disconnected in the power outage process according to the power outage detection signal, and can ensure the power outage safety of the powered device 40.

Optionally, fig. 2 shows a circuit structure of the power-on detection module 102 according to an embodiment of the present invention, where the power-on detection module 102 includes: a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first triode Q1, a first MOS transistor M1 and a second MOS transistor M2; specifically, a first end of the first resistor R1, a source of the first MOS transistor M1, and a first end of the first capacitor C1 are commonly connected to the first dc power supply V1, a second end of the first resistor R1 and a collector of the first transistor Q1 are commonly connected to a gate of the first MOS transistor M1, a second end of the first capacitor C1 is grounded GND, a drain of the first MOS transistor M1 is connected to a first end of the third resistor R3, a first end of the second resistor R2 and a first end of the second capacitor C2 are commonly connected to a base of the first transistor Q1, a second end of the second capacitor C2 and an emitter of the first transistor Q1 are commonly connected to ground GND, a second end of the second resistor R42 and a first end of the fourth resistor R4 are commonly connected to the control module 103 for connecting the detection enable signal ON _ DET _ EN, a second end of the fourth resistor 46r 45 is connected to the gate of the second MOS transistor M2, a source of the second MOS transistor M585, a source of the third resistor M573 24, a second end of the third resistor R3, a second end of the third capacitor C573 24, a second end of the first capacitor C59623 and a second end of the first capacitor C1 are commonly connected to ground GND The first end of the fourth capacitor C4 and the drain of the second MOS transistor M2 are connected to the network port signal line, and the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are connected to the network port signal transformer RX.

Optionally, in the circuit structure of the power-on detection module 102, the first transistor Q1 is an NPN-type transistor, the first MOS transistor M1 is a P-type MOS transistor, the second MOS transistor M2 is an N-type MOS transistor, and the first dc power supply V1 is a +3.3V dc power supply.

According to the circuit configuration of the power-ON detection module 102 shown in fig. 2, the second terminal of the second resistor R2 and the first terminal of the fourth resistor R4 are the enable signal input terminals of the power-ON detection module 102, the control module 103 transmits the detection enable signal ON _ DET _ EN to the power-ON detection module 102 through the enable signal input terminals, as described above, the detection enable signal ON _ DET _ EN has different level states, when the base of the first transistor Q1 is connected to the detection enable signal ON _ DET _ EN, the detection enable signal ON _ DET _ EN can be level-switched by the first transistor Q1, when the gate of the first MOS transistor M1 and the gate of the second MOS transistor M2 are simultaneously connected to the detection enable signal ON _ DET _ EN, the first MOS transistor M1 and the second MOS transistor M2 can be simultaneously turned ON or simultaneously turned off by the detection enable signal ON _ DET _ EN, thereby adjusting the operating state of the power-ON detection module 102, therefore, the power-ON detection module 102 can be driven by detecting the enable signal ON _ DET _ EN to realize a normal detection function; the second end of the third resistor R3, the first end of the third capacitor C3, the first end of the fourth capacitor C4, and the drain of the second MOS transistor M2 are detection signal output ends of the power-ON detection module 102, and when the power-ON detection module 102 detects the connection state of the powered device 40 and the network cable interface 30, a power-ON detection signal ON _ DET _ a is generated, and the power-ON detection signal ON _ DET _ a can be transmitted to the control module 103 through the detection signal output end of the power-ON detection module 102.

Exemplarily, taking fig. 2 as an example, in an embodiment of the present invention, the network cable interface 30 is a gigabit network interface, and the gigabit network interface includes 2 sets of network interface signal line pairs 1&2 and 3&6, and the network cable interface 30 includes 2 sets of idle line pairs 4&5 and 7&8, where the idle line pair is used as a network interface power line, and optionally, the power-on detection module 102 is connected to the network interface signal line pairs 3 and 6, or the power-on detection module 102 is connected to the network interface signal line pairs 1 and 2; according to the circuit structure of the power-on detection module 102, the power-on detection module 102 includes two switching circuits: the circuit comprises a first switch circuit and a second switch circuit, wherein the first switch circuit comprises a first MOS transistor M1, and the second switch circuit comprises a second MOS transistor M2; optionally, the first switch circuit is connected to the network port signal line 3, and the second switch circuit is connected to the network port signal line 6, so that the level of the network port signal line 3 is pulled up to the first dc power supply V1 through the first MOS transistor M1, and the level of the network port signal line 6 is pulled up to the ground GND through the drain voltage of the second MOS transistor M2, when the network port interface 30 is connected to a powered device with a transformer, the network port signal line 3 and the network port signal line 6 are two ends of the same winding of the network port transformer in the network port interface 30, and the network port signal line 3 and the network port signal line 6 are equivalent to a low-resistance wire for the dc power supply; the principle of detecting the connection state of the powered device 40 and the network cable interface 30 by the power-on detection module 102 is as follows: if the powered device 40 is not plugged into the cable interface 30, the level of the cable interface signal line 3 is high level, the level of the cable interface signal line 6 is low level, and the power-ON detection signal ON _ DET _ a is also high level at this time; if the powered device 40 is inserted into the network cable interface 30, since the network port signal line pair 3 and 6 are two ends of the same winding of the network port transformer, the level of the network port signal line 3 remains unchanged, and the level of the network port signal line 6 is pulled low; therefore, the power-on detection module 102 monitors the physical connection relationship between the power-on detection module 102 and the network cable interface 30 according to the change of the drain level of the first switching tube M1; when the power receiving device 40 is disconnected and connected with the network cable interface 30, the power-ON detection signal ON _ DET _ a has different high and low level states, and the physical connection state between the network cable interface 30 and the power receiving device 40 can be judged by the level state of the power-ON detection signal ON _ DET _ a, so that the operation is simple and convenient; meanwhile, in the non-standard POE power supply circuit 10, the pair of network port signal lines 3 and 6 are connected to a network port signal transformer through a third capacitor C3 and a fourth capacitor C4, and further, the network port signal transformer is connected to the switching module 101, so that communication interconnection among a plurality of network line interfaces is realized, wherein the third capacitor C3 and the fourth capacitor C4 are used as dc blocking capacitors, so that it is ensured that the level state of the power-on detection signal generated by the power-on detection module 102 is not affected by the network port signal transformer of the power supply device, and the third capacitor C3 and the fourth capacitor C4 are connected to another network line interface through the network port signal transformer, so that communication interconnection among the plurality of network line interfaces is realized, and the non-standard POE power supply circuit 10 has the best power supply effect.

Therefore, in the embodiment of the present invention, the power-ON detection module 102 is connected to the network port signal pair (3&6 or 1&2) in the network cable interface 30, and according to the level state of the power-ON detection signal ON _ DET _ a generated by the power-ON detection module 102, the following can be accurately obtained: whether the powered device 40 is successfully connected to the cable interface 30; if the power-ON detection signal ON _ DET _ a is low level, it indicates that the powered device 40 and the network cable interface 30 have been successfully physically connected; further, if the POE power source 20 transmits the electric energy to the powered device 40, and the powered device 40 has entered a power-on stage and successfully performs network communication, at this time, the switching module 101 generates a SWITCH _ LED signal, the first MOS transistor M1 and the second MOS transistor M2 in the power-on detection module 102 are both turned off, and the power-on detection module 102 stops working; therefore, when the detection enable signal ON _ DET _ EN is in the second level state, the first MOS transistor M1 and the second MOS transistor M2 can disconnect the power-ON detection module 102 from the network port signal line pair in the network cable interface 30 after the power-ON is completed and the communication network completes the handshake protocol, so as to ensure that the network communication between the network cable interface 30 and the external communication device is not interfered during normal operation after the power-ON is completed; furthermore, the embodiment of the present invention greatly maintains the communication quality of the network cable interface 30 through the power-on detection module 102.

As an alternative implementation, fig. 3 illustrates a circuit structure of the power outage detection module 104 according to an embodiment of the present invention, and as shown in fig. 3, the power outage detection module 104 includes: a fifth resistor R5, a sixth resistor R6, a fifth capacitor C5, a sixth capacitor C6 and a first diode D1; an anode of the first diode D1 and a first end of the fifth resistor R5 are commonly connected to the switching module 101, a cathode of the first diode D1 is connected to a first end of the sixth resistor R6, a second end of the sixth resistor R6, a second end of the fifth resistor R5, a first end of the fifth capacitor C5 and a first end of the sixth capacitor C6 are commonly connected to the control module 103, and a second end of the fifth capacitor C5 and a second end of the sixth capacitor C6 are commonly connected to the ground GND.

According to the circuit structure of the power-down detection module 104 shown in fig. 5, the anode of the first diode D1 and the first terminal of the fifth resistor R5 are signal input terminals of the power-down detection module 104, through which the power-down detection module 104 can access the SWITCH _ LED signal, and the second terminal of the sixth resistor R6, the second terminal of the fifth resistor R5, the first terminal of the fifth capacitor C5 and the first terminal of the sixth capacitor C6 are signal output terminals of the power-down detection module 104; the electronic components in the power-off detection module 104 determine whether the powered device 40 and the network cable interface 30 are disconnected in the power-on process according to the SWITCH _ LED signal; when the powered device 40 is powered on successfully, the power-OFF detection module 104 performs RC filtering on the SWITCH _ LED signal to obtain a stable power-OFF detection signal OFF _ DET _ B, and if the connection relationship between the powered device 40 and the network cable interface 30 changes during the power-on process, the level state of the power-OFF detection signal OFF _ DET _ B also changes; for example, when the powered device 40 is normally connected to the network cable interface 30 and the powered device 40 is normally powered on, the switching module 101 can transmit a SWITCH _ LED signal to the power-OFF detection module 104, where the SWITCH _ LED signal charges the fifth capacitor C5 and the sixth capacitor C6 through the first diode D1 and the sixth resistor R6, so that the power-OFF detection signal OFF _ DET _ B is at a high level; in contrast, if the powered device 40 is disconnected from the cable interface 30, the charges stored in the fifth capacitor C5 and the sixth capacitor C6 are discharged through the fifth resistor R5, and the power-OFF detection signal OFF _ DET _ B is at a low level; therefore, in the embodiment of the present invention, whether the powered device 40 has power interruption can be accurately determined during the power-on process according to the level state of the power-OFF detection signal OFF _ DET _ B, so that the power-OFF detection module 104 can ensure that the POE power source 20 stops supplying power to the powered device 40 after the powered device 40 is disconnected from the cable interface 30.

Optionally, fig. 4 shows a circuit structure of the control module 103 according to an embodiment of the present invention, and as shown in fig. 4, the control module 103 includes: the single-circuit NOT-gate chip U1, the two-circuit NOT-gate chip U2, the seventh capacitor C7, the eighth capacitor C8, the seventh resistor R7 and the eighth resistor R8; a signal input pin a of the one-way not-gate chip U1 is connected to the power-OFF detection module 104, and is used for connecting to a power-OFF detection signal OFF _ DET _ B; the ground pin of the single-circuit not-gate chip U1 is grounded GND, the power pin of the single-circuit not-gate chip U1 and the first end of the seventh capacitor C7 are connected to the second direct-current power supply V2 in common, the second end of the seventh capacitor C7 is connected to the GND in common, the signal output pin Y of the single-circuit not-gate chip U1 and the first signal input pin a of the two-circuit nand-gate chip U2 are connected to the power-ON detection module 102 in common, and are used for transmitting the detection enable signal ON _ DET _ EN to the power-ON detection module 102, controlling the working state of the power-ON detection module 102 by detecting the enable signal ON _ DET _ EN, and detecting the enable signal ON _ DET _ EN as the input signal of the nand-gate chip U2, and being capable of driving the two-circuit nand-gate chip U2 to generate the power enable signal POE _ EN; a first end of the seventh resistor R7 is connected to the power-ON detection module 102, and is configured to receive a power-ON detection signal ON _ DET _ a; the second end of the seventh resistor R7 and the first end of the eighth resistor R8 are connected to the second signal input pin B of the two nand gate chips U2 in common, the second end of the eighth resistor R8 is connected to the ground GND, the ground pins of the two nand gate chips U2 are connected to the ground GND, the power pins VCC of the two nand gate chips U2 and the first end of the eighth capacitor C8 are connected to the third dc power supply V3 in common, the second end of the eighth capacitor C8 is connected to the ground GND, and the signal output pin Y of the two nand gate chips U2 is connected to the power supply module 105 in common, so as to transmit the power enable signal POE _ EN to the power supply module 105.

In a preferred embodiment, the model of the one-way not gate chip U1 is SN74LVC1G04, and the model of the two-way nand gate chip U2 is SN74AUP1G00 DCKR.

In the circuit structure of the control module 103, the signal input pin a of the one-way not gate chip U1 and the first end of the seventh resistor R7 are signal input terminals of the control module 103, and the signal output pin Y of the one-way not gate chip U1 and the signal output pin Y of the two-way nand gate chip U2 are signal output terminals of the control module 103; the one-way NOT gate chip U1 has a signal inversion function, when the signal input pin A of the one-way NOT gate chip U1 is connected with the power-OFF detection signal OFF _ DET _ B, the one-way NOT gate chip U1 can invert the level of the signal after performing the NOT logic operation ON the power-OFF detection signal OFF _ DET _ B, and then outputs the detection enabling signal ON _ DET _ EN through the signal output pin Y; the two nand gate chips U2 have a nand logic operation function for input signals, when the first signal input pin a and the second signal input pin B of the two nand gate chips U2 are respectively connected to the detection enable signal ON _ DET _ EN and the power-ON detection signal ON _ DET _ a, the two nand gate chips U2 can perform nand logic operation ON the detection enable signal ON _ DET _ EN and the power-ON detection signal ON _ DET _ a, and further transmit the power enable signal POE _ EN to the power supply module 105 through the signal output pin Y of the two nand gate chips U2; for example, table 1 shows a truth table of the logic conversion performed by the control module 103 ON the power-OFF detection signal OFF _ DET _ B and the power-ON detection signal ON _ DET _ a, and corresponding operating states of the non-standard POE power supply circuit 10 when the detection enable signal ON _ DET _ EN and the power enable signal POE _ EN are in different level states after the logic conversion performed by the control module 103;

TABLE 1 logic transition truth table for control module 103

According to the logic conversion relationship of the control module 103 shown in table 1, the control module 103 can obtain the connection state of the network cable interface 30 and the powered device 40 according to the power-OFF detection signal OFF _ DET _ B and the power-ON detection signal ON _ DET _ a, and then the control module 103 generates and outputs the detection enable signal ON _ DET _ EN, and drives the power-ON detection module 102 to detect the connection relationship between the network cable interface 30 and the powered device 40 through the detection enable signal ON _ DET _ EN; meanwhile, the control module 103 generates and outputs a power enable signal POE _ EN, and the POE power source 20 can be driven by the power enable signal POE _ EN to power the powered device 40; therefore, in the embodiment of the present invention, the control module 103 performs logic conversion ON the power-ON detection signal ON _ DET _ a and the power-OFF detection signal OFF _ DET _ B to generate the power enable signal POE _ EN and the detection enable signal ON _ DET _ EN, and manages and controls the power-ON process of the powered device 40 through the power enable signal POE _ EN and the detection enable signal ON _ DET _ EN.

As an alternative implementation, fig. 5 shows a circuit structure of the power supply module 105 according to an embodiment of the present invention, and as shown in fig. 5, the power supply module 105 includes: a ninth resistor R9, a tenth resistor R10, a ninth capacitor C9, a second diode D2 and a third MOS transistor M3; a first end of the ninth resistor C9 is connected to the control module 103, and a first end of the ninth resistor C9 is a signal input end of the power supply module 105, and is used for accessing a power enable signal POE _ EN; the second end of the ninth resistor R9, the first end of the ninth capacitor C9 and the first end of the tenth resistor R10 are commonly connected to the gate of the third MOS transistor M3, the second end of the ninth capacitor C9, the second end of the tenth resistor C10 and the source of the third MOS transistor M3 are commonly connected to the ground GND, the drain of the third MOS transistor M3 is connected to the negative electrode POE ″ of the network port power line, the anode of the second diode D2 is connected to the POE power source 20, and the cathode of the second diode D2 is connected to the positive electrode POE + of the network port power line.

Optionally, the third MOS transistor M3 is an N-type MOS transistor; the anode of the second diode D2 is a power input terminal of the power supply module 105, and is used for accessing a power signal V4; the drain of the third MOS transistor M3 and the cathode of the second diode D2 are power output terminals of the power supply module 105; when the signal input end of the power supply module 105 is connected to the power enable signal POE _ EN, the gate of the third MOS transistor M3 is connected to the power enable signal POE _ EN, when the power enable signal is in the first level state (high level), the drain and the source of the third MOS transistor M3 are connected, then the power loop inside the power supply module 105 can be connected, and further the POE power supply 20 outputs a power signal V4, the power signal V4 is output to the powered device 40 through the network port power line of the second diode D2 and the network port interface 30 in sequence, and further the power-on process of the powered device 40 is realized through the power signal; therefore, the power supply module 105 in the embodiment of the present invention can quickly transmit the power signal to the powered device 40 to implement the power-on operation of the powered device 40.

Preferably, the switching module 101 includes a Switch chip, wherein the Switch chip has a function of a gateway communication indicator lamp; optionally, the model of the Switch chip is RTL8305NB-CG, an LED signal output pin of the Switch chip is connected to the power-on detection module 102, a socket signal pin of the Switch chip is connected to the socket transformer, which is used to implement communication interconnection between multiple socket interfaces, and ensure that normal network communication can be performed between the socket interfaces, a communication pin of the Switch chip is connected to the socket interface 30, and then the Switch chip is connected to the socket interface 30 in a communication manner, and in the power-on process of the powered device 40, the Switch chip can obtain an indication signal of the powered device 40 in the normal communication process, and generate a Switch _ LED signal, and transmit the Switch _ LED signal to the power-off detection module 104 through the LED signal output pin of the Switch chip, and then the power-off detection module 104 recognizes according to the Switch _ LED signal: whether the powered device 40 is in a normal power-on state or not is performed, so that the power supply safety of the non-standard POE power supply circuit 10 is ensured.

As an alternative implementation, fig. 6 shows a module structure of a power supply apparatus 70 according to an embodiment of the present invention, where the power supply apparatus 70 is configured to power up a powered device 40, and as shown in fig. 6, the power supply apparatus 70 includes: as described above, the non-standard POE power supply circuit 10, the POE power source 20, and the network cable interface 30 for the network port, the non-standard POE power supply circuit 10 is connected to the POE power source 20 and the network cable interface 30, referring to the above embodiments of fig. 1 to 5, in the power supply device 70 shown in fig. 6, the operation such as detection, management, and control can be performed on the power supply process of the power supply device 70 through the non-standard POE power supply circuit 10, and then the POE power source 20 transmits electric energy to the powered device 40 through the network interface 30, so as to implement the power-on process of the powered device 40; in the embodiment of the present invention, the power supply device 70 does not need to use a PSE chip, so that the application cost of the power supply device 70 is greatly reduced, and the compatibility is very strong.

Optionally, the powered device 40 is a POE network camera supporting POE power supply.

Fig. 7 shows an implementation procedure of a non-standard POE power supply method provided by the embodiment of the present invention, where as shown in fig. 7, the network cable interface includes a network port signal line and a network port power line, and the non-standard POE power supply method includes the following steps:

step S901: detecting whether a power receiving device is connected to the network cable interface through the network port signal line so as to monitor the physical connection state between the network cable interface and the power receiving device in real time;

step S902: if the network cable interface is connected to the powered device, generating a power supply enabling signal; after the network cable interface is connected to the powered device, the powered device finishes power-on preparation work, and then the powered device is driven to enter a power-on stage as soon as possible through a power supply enabling signal; otherwise, if the network cable interface is not connected to the powered device, the process returns to step S901 to continue to detect the physical connection state between the network cable interface and the powered device.

Step S903: outputting a power signal of the POE power supply to a power line of the network port according to the power enabling signal; the powered device is charged through the power signal to realize the power-on operation of the powered device.

Step S904: if the powered device is in normal communication with the network cable interface, stopping detecting whether the network cable interface is accessed by the powered device;

in step S904, after the powered device receives the power signal and the powered device normally communicates with the network cable interface, the connection state between the network cable interface and the powered device is stopped, so as to avoid the network communication from being interfered after the network cable interface successfully powers on, and maintain the normal power-on function of the powered device.

It should be noted that the non-standard POE power supply method in fig. 7 is steps corresponding to the non-standard POE power supply circuit 10 for the network port in fig. 1, and therefore, reference may be made to the embodiment in fig. 1 for embodiments of the steps in the non-standard POE power supply method in fig. 7, which will not be described again here.

Therefore, in the embodiment of the present invention, the non-standard POE power supply method can detect, manage, and control the power-on process of the powered device, and can provide stable direct current power to the POE powered devices with different operating voltages by using the non-standard POE power supply method, so as to implement the safe power-on process of the POE powered devices, which has strong compatibility and a wide application range; the problem that the conventional standard POE power supply method cannot be universally applied due to the fact that operations such as management and control of the power-on process of the POE powered device can be carried out only by relying on a PSE chip in the conventional technology is effectively solved.

It should be noted that, in this document, words such as a plurality and a plurality refer to a number greater than 1.

Claims (10)

1. The utility model provides a non-standard POE supply circuit for net gape, non-standard POE supply circuit and POE power and net twine interface connection, net twine interface includes net gape signal line and net gape power cord, its characterized in that, non-standard POE supply circuit includes:

the switching module is connected with the network port signal line and used for generating a SWITCH _ LED signal when the power receiving equipment is in normal communication with the network cable interface;

the power-on detection module is connected with the network port signal line and used for detecting whether the power receiving equipment is accessed to the network port interface or not when no SWITCH _ LED signal exists;

the control module is connected with the power-on detection module and used for disconnecting the power-on detection module from the network port signal line and generating a power supply enabling signal when the SWITCH _ LED signal exists, or generating the power supply enabling signal when the SWITCH _ LED signal does not exist and the network cable interface is connected to the powered device;

a power-off detection module, connected to the switching module and the control module, for detecting whether the powered device and the network cable interface are disconnected after the power-on detection module is disconnected from the network port signal line; and

the power supply module is connected with the POE power supply, the control module and the network port power line and used for outputting a power supply signal of the POE power supply to the powered device through the network port power line according to the power supply enabling signal;

if the powered device and the network cable interface realize normal communication, the switching module generates the SWITCH _ LED signal; if the powered device cannot normally communicate with the network port interface, the switching module does not generate the SWITCH _ LED signal;

the control module is specifically configured to generate a corresponding detection enable signal when the SWITCH _ LED signal is present, disconnect the power-on detection module from the network port signal line, and generate the power enable signal, or generate the power enable signal after the SWITCH _ LED signal is absent and the network cable interface is connected to the powered device;

the power-on detection module is further configured to detect whether a powered device is accessed to the network cable interface according to the detection enable signal.

2. The non-standard POE power supply circuit according to claim 1, wherein the power-off detection module detects whether the powered device and the cable interface are disconnected, specifically:

and the power-off detection module performs RC filtering on the SWITCH _ LED signal to obtain a power-off detection signal, and judges whether the powered device is disconnected with the network cable interface or not according to the power-off detection signal.

3. The non-standard POE power supply circuit of claim 1, wherein the power-up detection module comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first triode, a first MOS (metal oxide semiconductor) transistor and a second MOS transistor;

the first end of the first resistor, the source electrode of the first MOS transistor and the first end of the first capacitor are connected to a first direct-current power supply, the second end of the first resistor and the collector electrode of the first triode are connected to the gate electrode of the first MOS transistor, the second end of the first capacitor is grounded, the drain electrode of the first MOS transistor is connected to the first end of the third resistor, the first end of the second resistor and the first end of the second capacitor are connected to the base electrode of the first triode, the second end of the second capacitor and the emitter electrode of the first triode are connected to the ground, the second end of the second resistor and the first end of the fourth resistor are connected to the control module, the second end of the fourth resistor is connected to the gate electrode of the second MOS transistor, the source electrode of the second MOS transistor is grounded, the second end of the third resistor, the first end of the third capacitor, the first end of the second capacitor and the drain electrode of the first MOS transistor are connected to the control module, The first end of the fourth capacitor and the drain electrode of the second MOS tube are connected with the network port signal wire, and the second end of the third capacitor and the second end of the fourth capacitor are connected with a network port signal transformer.

4. The non-standard POE power supply circuit of claim 1, wherein the power-off detection module comprises: the first resistor, the second resistor, the third capacitor, the fourth capacitor and the first diode are connected in series;

the anode of the first diode and the first end of the fifth resistor are connected to the switching module in common, the cathode of the first diode is connected to the first end of the sixth resistor, the second end of the fifth resistor, the first end of the fifth capacitor and the first end of the sixth capacitor are connected to the control module in common, and the second end of the fifth capacitor and the second end of the sixth capacitor are connected to ground in common.

5. The non-standard POE power supply circuit of claim 1, wherein the control module comprises: the single-way NOT gate chip, the two-way NOT gate chip, the seventh capacitor, the eighth capacitor, the seventh resistor and the eighth resistor;

wherein, the signal input pin of the single-way not-gate chip is connected with the power-off detection module, the ground pin of the single-way not-gate chip is grounded, the power pin of the single-way not-gate chip and the first end of the seventh capacitor are connected with a second direct-current power supply in a common way, the second end of the seventh capacitor is grounded, the signal output pin of the single-way not-gate chip and the first signal input pin of the two-way nand-gate chip are connected with the power-on detection module in a common way, the first end of the seventh resistor is connected with the power-on detection module, the second end of the seventh resistor and the first end of the eighth resistor are connected with the second signal input pins of the two-way nand-gate chip in a common way, the second end of the eighth resistor is grounded, the ground pins of the two-way nand-gate chip are grounded, the power pins of the two-way nand-gate chip and the first end of the, and the second end of the eighth capacitor is grounded, and the signal output pins of the two paths of NAND gate chips are connected with the power supply module.

6. The non-standard POE power supply circuit of claim 1, wherein the power supply module comprises: the third MOS transistor comprises a ninth resistor, a tenth resistor, a ninth capacitor, a second diode and a third MOS transistor;

wherein, the first end of ninth resistance connects control module, the second end of ninth resistance, the first end of ninth electric capacity and the first end of tenth resistance connect in the grid of third MOS pipe altogether, the second end of ninth electric capacity, the second end of tenth resistance and the source electrode of third MOS pipe connect in ground altogether, the drain electrode of third MOS pipe connects the negative pole of net gape power cord, and the positive pole of second diode connects the POE power, the negative pole of second diode connects the positive pole of net gape power cord.

7. The non-standard POE power supply circuit of claim 1, wherein the switching module comprises a Switch chip, and wherein the Switch chip has a gateway communication indicator lamp function.

8. A power supply apparatus configured to power on a powered device, the power supply apparatus comprising: the non-standard POE power supply circuit for the internet access as claimed in any of claims 1 to 7, a POE power source connected to the non-standard POE power supply circuit, and a network cable interface connected to the non-standard POE power supply circuit.

9. The power supply apparatus according to claim 8, wherein the powered apparatus is a POE network camera.

10. A non-standard POE power supply method for a network port, applied to the non-standard POE power supply circuit for the network port as claimed in any one of claims 1 to 7, wherein the non-standard POE power supply method comprises the following steps:

detecting whether a power receiving device is accessed to the network cable interface through the network port signal line;

if the network cable interface is connected to the powered device, generating a power supply enabling signal;

outputting a power supply signal of a POE power supply to the power line of the network port according to the power supply enabling signal;

and if the power receiving equipment is in normal communication with the network cable interface, stopping detecting whether the network cable interface has the power receiving equipment access.

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