CN115987700B - Network cable power supply circuit, power supply method, system, computer equipment and medium - Google Patents
Network cable power supply circuit, power supply method, system, computer equipment and medium Download PDFInfo
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Abstract
The invention discloses a network cable power supply circuit, a power supply method, a system, computer equipment and a medium, which comprises an exchange module, a first network transformation module, a second network transformation module, a power supply module and an interface module.
Description
Technical Field
The present invention relates to network cable power supply circuits, and more particularly, to a network cable power supply circuit, a power supply method, a system, a computer device, and a medium.
Background
POE (Power Over Ethernet) is a technology for transmitting data signals to IP-based terminals (such as IP phones, wireless lan access points AP, webcams, etc.) while providing dc power to such devices without any modification to the existing ethernet cat.5 wiring infrastructure. The POE technology can ensure the safety of the existing structured wiring and the normal operation of the existing network, thereby reducing the cost to the maximum extent;
however, in the existing POE switch, due to the limitation of the protocol standard of POE, when a single port of the PE power supply end of the POE switch supplies power to a plurality of PD devices, the PE power supply end cannot identify the connected plurality of PD devices, but in practice, the PE ports of the POE switch generally support output of 15W-30W power, while some PD devices often have smaller power consumption, and only 4W is required to normally operate, so when one port of the POE switch supplies power to only a single PD device, a part of output power is often wasted, resulting in power waste, and therefore, how to supply power to a plurality of PD devices by each port of the POE switch simultaneously prevents the occurrence of power waste, which becomes an urgent problem to be solved.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a network cable power supply circuit, a power supply method, a system, a computer device and a medium capable of simultaneously supplying power to a plurality of PD devices at each port of a POE switch, thereby preventing power waste.
The invention discloses a network cable power supply circuit, which comprises a switching module, a first network voltage transformation module, a second network voltage transformation module, a power supply module and an interface module;
the interface module is internally provided with a first network port unit and a second network port unit, the positive electrode port group of the first network port unit is connected with the positive electrode input port group of the network transformer T1 in the first network transformation module, the negative electrode port group of the first network port unit is connected with the negative electrode input port group of the network transformer T1 in the first network transformation module, the positive electrode port group of the second network port unit is connected with the positive electrode input port group of the network transformer T2 in the second network transformation module, the negative electrode port group of the second network port unit is connected with the negative electrode input port group of the network transformer T2 in the first network transformation module, the first data output port group of the network transformer T1 is connected with the first data input port group of the switch chip U1 in the switch module, the second data output port group of the network transformer T2 is connected with the second data input port group of the switch chip U1 in the switch module, and the first AC port of the network transformer T1 is connected with the second AC port of the network transformer T2, and the second AC port of the network transformer T2 is connected with the network transformer.
Further, a main camera network port unit, a secondary camera network port unit and a timing unit are also arranged in the exchange module;
the main camera network port unit is characterized in that an MDI_TP end, an MDI_TN end, an MDI_RN end and an MDI_RP end of the main camera network port unit are respectively connected with an RXIP0 end, an RXIN0 end, an TXON0 end and a TXOP0 end of the exchange chip U1, an FMDI_RP end, an FMDI_RN end, an FMDI_TN end and an FMDI_TP end in the auxiliary camera network port unit are respectively connected with a TXOP3 end, a TXON3 end, an RXIN3 end and an RXIP3 end of the exchange chip U1, one end of the time sequence unit is connected with an X1 end of the exchange chip U1, and the other end of the time sequence unit is connected with an X0 end of the exchange chip U1;
the time sequence unit comprises a crystal oscillator XTAL1, a capacitor C2 and a resistor R1;
the first pin of the crystal oscillator XTAL1 is connected with one end of a capacitor C1, one end of a resistor R1 and the X1 end of the exchange chip U1, the other end of the capacitor C1 is connected with the 2 nd pin of the crystal oscillator XTAL1, the 4 th pin of the crystal oscillator XTAL1 and one end of a capacitor C2 and grounded, and the other end of the capacitor C2 is connected with the 3 rd pin of the crystal oscillator XTAL1, the other end of the resistor R1 and the X0 end of the exchange chip U1.
Further, the first network transformer module further includes a capacitor C3, a capacitor C4, a transient diode TVS1, a transient diode TVS2, and a first protection unit, and the second network transformer module further includes a capacitor C5, a capacitor C6, a transient diode TVS3, a transient diode TVS4, and a second protection unit;
The network transformer T1 is respectively connected with a TXOP1 port, a TXON1 port, a RXIP1 port and a RXIN1 port of a first data input port group of the switching chip U1 through a TD1+ port, a TD 1-port, a RD1+ port and a RD 1-port in the first data output port group, one end of the capacitor C3 is connected with a TVC1 port of the network transformer T1, one end of the capacitor C4 is connected with a RCV1 port of the network transformer T1, the other end of the capacitor C3 and the other end of the capacitor C4 are connected with the ground, a transient diode TVS1 is connected between the TD1+ port and the TD 1-port in parallel, and a transient diode TVS2 is connected between the RD1+ port and the RD 1-port in parallel;
the network transformer T2 is connected to the TXOP2 port, the TXON2 port, the RXIP2 port and the RXIN2 port of the second data input port group of the switch chip U1 through the td2+ port, the TD 2-port, the rd2+ port and the RD 2-port in the second data output port group, one end of the capacitor C5 is connected to the TVC2 port of the network transformer T2, one end of the capacitor C6 is connected to the RCV2 port of the network transformer T2, the other end of the capacitor C5 and the other end of the capacitor C6 are connected to the ground, the transient diode TVS3 is connected in parallel between the td2+ port and the TD 2-port, the transient diode TVS4 is connected in parallel between the rd2+ port and the RD 2-port, the first protection unit 21 is connected to the first AC port, and the second protection unit 22 is connected to the second AC port.
Further, the first protection unit includes a resistor R2, a resistor R3, a capacitor C7, a capacitor C8, a discharge tube GDT1 and a discharge tube GDT2,
the first AC port comprises an AC1+ end and an AC 1-end, one end of a resistor R2 is connected with the AC 1-end and one end of a discharge tube GDT1, the other end of the resistor R2 is connected with one end of a capacitor C7, the other end of the capacitor C7 is connected with the other end of the discharge tube GDT1 and grounded, one end of a resistor R3 is connected with the AC1+ end and one end of the discharge tube GDT2, the other end of the resistor R3 is connected with one end of a capacitor C8, and the other end of the capacitor C8 is connected with the other end of the discharge tube GDT2 and grounded;
further, the second protection unit includes a resistor R4, a resistor R5, a capacitor C9, a capacitor C10, a discharge tube GDT3, and a discharge tube GDT4;
the second AC port comprises an AC2+ end and an AC 2-end, one end of a resistor R4 is connected with the AC 2-end and one end of a discharge tube GDT3, the other end of the resistor R4 is connected with one end of a capacitor C9, the other end of the capacitor C9 is connected with the other end of the discharge tube GDT3 and grounded, one end of a resistor R5 is connected with the AC2+ end and one end of the discharge tube GDT4, the other end of the resistor R5 is connected with one end of a capacitor C10, and the other end of the capacitor C10 is connected with the other end of the discharge tube GDT4 and grounded;
In addition, a resistor R6 is connected in series between the AC1+ end and the AC2+ end, and a resistor R7 is connected in series between the AC 1-end and the AC 2-end.
Further, the power module includes a rectifier bridge D1, a transient suppression diode D2, a diode D3, a diode D4, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, and a PD chip U2;
the input end A of the rectifier bridge D1 is connected with the AC2+ end, the input end B of the rectifier bridge D1 is connected with the AC 2-end, the output end of the positive pole of the rectifier bridge D1 is connected with one end of a transient suppression diode D2, the positive pole of a capacitor C11, one end of a resistor R10, the VDD end of a PD chip U2, the positive pole of a capacitor C12 and the positive pole of a diode D4, the negative pole output end of the rectifier bridge D1 is grounded at the front end and is connected with the other end of the transient suppression diode D2, the negative pole of the capacitor C11, one end of a resistor R8, one end of a resistor R9 and the front end of the PD chip U2 are grounded, the other end of the resistor R8 is connected with the RILM end of the PD chip U2, the other end of the resistor R9 is connected with the RCLASS end of the PD chip U2, the other end of the PD chip U2 is also connected with one end of the resistor R11, the other end of the resistor R11 is connected with the negative pole of the diode D3 and is grounded, the OOD end of the PD chip U2 is connected with the positive pole of the capacitor C12 and the positive pole of the capacitor C13 and the positive pole of the capacitor C14 and the negative pole of the capacitor C2 is connected with the positive pole of the capacitor C13 and the positive pole of the capacitor C14 is connected with the positive pole of the capacitor C13 and the negative pole of the capacitor C14 is connected with the ground of the diode D13.
Further, the switching module further includes a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a capacitor C15, a capacitor C16, and a capacitor C17;
the IBREF end of the exchange chip U1 is connected with one end of a resistor R13, the other end of the resistor R13 is grounded, the AVDDL end of the exchange chip U1 is connected with the AVDDLPLL end of the exchange chip U1 and is connected with the external power supply, the V33IN end of the exchange chip U1 is connected with the external power supply and is connected with one end of a capacitor C15 and one end of a capacitor C16, the other end of the capacitor C15 and the other end of the capacitor C16 are connected with the ground, the V10OUT end of the exchange chip U1 is connected with the DVDDL end of the exchange chip U1 and is connected with the external power supply, the P2LED/DIS_RST_BLNK end of the exchange chip U1 is connected with one end of a resistor R14, the other end of the resistor R14 is connected with the LED2 end IN the interface module, the P1LED end of the exchange chip U1 is connected with one end of a resistor R15, the other end of the resistor R15 is connected with the LED1 end IN the interface module, the RESETB end of the exchange chip U1 is connected with a resistor R17 and one end of a capacitor C17, the other end of the resistor R17 is connected with one end of a resistor R16 and the DVDDH end of the exchange chip U1 and is connected with external power supply, the other end of the resistor R16 is connected with the P0LED/DIS_EEE end of the exchange chip U1, the other end of the capacitor C17 is grounded, the SDA/MDIO end of the exchange chip U1 is connected with one end of the resistor R17, the SCL/MDC end of the exchange chip U1 is connected with one end of a resistor R18, and the other end of the resistor R17 is connected with the other end of the resistor R18 and is connected with external power supply.
The invention also discloses a power supply method, which comprises a first network port unit, a second network port unit, a first network transformation module, a second network transformation module, an exchange module and a power module, wherein the first network port unit is connected with the first network transformation module, the second network port unit is connected with the second network transformation module, the first network transformation module and the second network transformation module are mutually connected and are connected with the exchange module, and the second network transformation module is also connected with the power module, and the method comprises the following steps:
acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
inputting the transmission signal to the first network transformation module for coupling, thereby extracting a network signal in the transmission signal;
the network signals are sent to the exchange module for data exchange, and after the network exchange signals are generated, the network signals are sent to the second network transformation module;
directly sending the power supply signal to the second network transformation module through a transformer middle tap for modulation;
the second network transformation module outputs the network switching signal and the power supply signal through the second network port unit, so that power transmission and network transmission among a plurality of devices are realized.
The invention also discloses a power supply system, which comprises a first network port unit, a second network port unit, a first network transformation module, a second network transformation module, an exchange module and a power module, wherein the first network port unit is connected with the first network transformation module, the second network port unit is connected with the second network transformation module, the first network transformation module and the second network transformation module are mutually connected and are connected with the exchange module, the second network transformation module is also connected with the power module, and the system comprises:
the acquisition unit is used for acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
the coupling unit is used for inputting the transmission signal into the first network transformation module for coupling so as to extract a network signal in the transmission signal;
the switching unit is used for sending the network signals to the switching module for data switching, generating network switching signals and sending the network switching signals to the second network transformation module;
the rectification unit is used for sending the power supply signal to the second network transformation module for modulation;
And the output unit is used for outputting the network switching signal and the power supply signal through the second network port unit through the second network transformation module, so that power transmission and network transmission among a plurality of devices are realized.
A computer device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of:
acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
inputting the transmission signal to the first network transformation module for coupling, thereby extracting a network signal in the transmission signal;
the network signals are sent to the exchange module for data exchange, and after the network exchange signals are generated, the network signals are sent to the second network transformation module;
directly sending the power supply signal to the second network transformation module through a transformer middle tap for modulation;
the second network transformation module outputs the network switching signal and the power supply signal through the second network port unit, so that power transmission and network transmission among a plurality of devices are realized.
A computer readable medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
inputting the transmission signal to the first network transformation module for coupling, thereby extracting a network signal in the transmission signal;
the network signals are sent to the exchange module for data exchange, and after the network exchange signals are generated, the network signals are sent to the second network transformation module;
the power supply signal is sent to the second network transformation module for modulation;
the second network transformation module outputs the network switching signal and the power supply signal through the second network port unit, so that power transmission and network transmission among a plurality of devices are realized.
According to the network cable power supply circuit, the power supply method, the system, the computer equipment and the medium, the power supply signals input by the primary PD equipment are modulated through the first network voltage transformation module and are sent to the second network voltage transformation module after being rectified through the power supply module by the mode that the interface module is arranged to be connected with the primary PD equipment and the secondary PD equipment at the same time, and finally the power supply signals are output to the connected secondary PD equipment through the interface module, so that the function of hand-held power supply between the two PD equipment is achieved, the problem that power waste is caused because power consumption of a single port of an existing POE switch can only be supplied to the single PD equipment under the premise that power consumption meets the power supply condition of a plurality of PD equipment due to protocol and technology is solved, and the utilization rate of system power is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
FIG. 1 is a schematic diagram of a connection of a network cable power supply circuit according to an embodiment;
FIG. 2 is a schematic circuit diagram of a first network transformer module and a second network transformer module according to an embodiment;
FIG. 3 is a schematic circuit diagram of a power module according to an embodiment;
FIG. 4 is a schematic circuit diagram of a switch module according to an embodiment;
FIG. 5 is a schematic circuit diagram of an interface module according to an embodiment;
FIG. 6 is a flow chart of a method of supplying power in an embodiment;
FIG. 7 is a schematic diagram of a power supply system according to an embodiment;
fig. 8 is a block diagram of a computer device in one embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, 2, 4 and 5, the invention discloses a network cable power supply circuit, which comprises a switching module 1, a first network transformation module 2, a second network transformation module 3, a power module 4 and an interface module 5;
the interface module 5 is internally provided with a first network port unit 51 and a second network port unit 52, the positive electrode port group of the first network port unit 51 is connected with the positive electrode input port group of the network transformer T1 in the first network transformation module 2, the negative electrode port group of the first network port unit 51 is connected with the negative electrode input port group of the network transformer T1 in the first network transformation module 2, the positive electrode port group of the second network port unit 52 is connected with the positive electrode input port group of the network transformer T2 in the second network transformation module 3, the negative electrode port group of the second network port unit 52 is connected with the negative electrode input port group of the network transformer T2 in the first network transformation module 2, the first data output port group of the network transformer T1 is connected with the first data input port group of the exchange chip U1 in the exchange module 1, the second data output port group of the network transformer T2 is connected with the second data input port group of the exchange chip U1 in the exchange module 1, and the first AC port 6 of the network transformer T1 is connected with the second AC port of the network transformer T2, and the second AC port 7 of the network transformer T2 is also connected with the power supply module 4.
As described in the above embodiment, the positive port group of the first network port unit 51 includes the TX1+ port and the RX1+ port, the negative port group of the first network port unit 51 includes the TX 1-port and the RX 1-port, the positive port group of the second network port unit 52 includes the TX2+ port and the RX2+ port, the negative port group of the second network port unit 52 includes the TX 2-port and the RX 2-port, it is understood that the first network port unit 51 is used for connecting with a primary PD device, the second network port unit 52 is used for connecting with a secondary PD device that needs to run depending on a transmission signal input by the primary PD device, the primary PD device inputs the transmission signal to the first network port unit 51, the transmission signal is a network signal with a power supply signal, then the network transformer T1 in the first network transformer module 2 couples the transmission signal, thereby coupling the network signal in the transmission signal to the secondary of the network transformer T1, and modulating the network transformer T2 after the normal network data exchange and transmission by the input exchange module 1;
at this time, the power supply signal is blocked at the primary side of the network transformer T1, so that the network transformer T1 inputs the power supply signal into the power supply module 4 for rectification, thereby realizing the functions of undervoltage protection, overcurrent protection and the like, and meanwhile, the network transformer T1 transmits the power supply signal into the second network transformer module 3 for modulation;
Then the network transformer T2 processes the network signal input by the switching module 1 and the power supply signal input by the network transformer T1 at the same time, and then the network transformer T2 outputs the input network signal and the power supply signal by the second network port unit 52, and the secondary PD device connected to the second network port unit 52 can operate normally via the power supply signal and the network signal, so as to implement power supply by hand depending on the transmission signal input by the primary PD device, and achieve the function of the subsequently connected secondary PD device.
It will be appreciated that when the primary PD device is connected to the second portal unit 52, the secondary PD device may be connected to the first portal unit 51, yet still enable the function of transmitting the power signal and the network signal between the primary PD device and the secondary PD device by power on hand;
in addition, in the embodiment, the POE switch designed by the technical scheme of the application needs to be customized into a POE power supply mode for direct output without a detection function.
According to the power supply system, through the structure, the mode that the first-stage PD equipment and the secondary PD equipment are connected simultaneously through the interface module is adopted, the power supply signals input by the first-stage PD equipment are sent to the second-stage network voltage transformation module after being regulated through the first-stage network voltage transformation module and rectified through the power supply module, and finally the power supply signals are output to the connected secondary PD equipment through the interface module, so that the function of supplying power to a handle between two PD equipment is achieved, the problem that the power can only be supplied to the single PD equipment due to protocol and technology limitation on the premise that power consumption meets the power supply conditions of the plurality of PD equipment in the prior art is solved, the problem of power waste is caused, the utilization rate of system power is improved, and the energy consumption ratio of the system is improved simultaneously.
Referring to fig. 4, in an embodiment, a main camera network port unit 11, a sub-camera network port unit 12 and a timing unit 13 are further disposed in the switch module 1;
the mdi_tp end, mdi_tn end, mdi_rn end and mdi_tp end of the main camera network port unit 11 are respectively connected with the RXIP0 end, RXIN0 end, TXON0 end and TXOP0 end of the switching chip U1, the fmdi_rp end, fmdi_rn end, fmdi_tn end and fmdi_tp end of the auxiliary camera network port unit 12 are respectively connected with the TXOP3 end, TXON3 end, RXIN3 end and RXIP3 end of the switching chip U1, one end of the timing unit 13 is connected with the X1 end of the switching chip U1, and the other end of the timing unit is connected with the X0 end of the switching chip U1;
the timing unit 13 includes a crystal oscillator XTAL1, a capacitor C2, and a resistor R1;
the first pin of the crystal oscillator XTAL1 is connected with one end of a capacitor C1, one end of a resistor R1 and the X1 end of the exchange chip U1, the other end of the capacitor C1 is connected with the 2 nd pin of the crystal oscillator XTAL1, the 4 th pin of the crystal oscillator XTAL1 and one end of a capacitor C2 and grounded, and the other end of the capacitor C2 is connected with the 3 rd pin of the crystal oscillator XTAL1, the other end of the resistor R1 and the X0 end of the exchange chip U1.
As described in the above embodiment, the main camera network port unit 11 and the auxiliary camera network port unit 12 are configured to be connected to the switching chip U1 for implementing independent operation, and meanwhile, the transmission signals input by the primary PD device can be relied on to implement the hand-in-hand power supply and the data transmission function between the other PD devices connected to the interface module 5, and in addition, the crystal oscillator XTAL1 disposed in the timing unit 13 is configured to provide the switching chip U1 with the timing signals necessary for operation.
Referring to fig. 2, 4 and 5, in one embodiment, the first network transformer module 2 further includes a capacitor C3, a capacitor C4, a transient diode TVS1, a transient diode TVS2 and a first protection unit 21, and the second network transformer module 3 further includes a capacitor C5, a capacitor C6, a transient diode TVS3, a transient diode TVS4 and a second protection unit 22;
the network transformer T1 is respectively connected with a TXOP1 port, a TXON1 port, a RXIP1 port and a RXIN1 port of a first data input port group of the switching chip U1 through a TD1+ port, a TD 1-port, a RD1+ port and a RD 1-port in the first data output port group, one end of the capacitor C3 is connected with a TVC1 port of the network transformer T1, one end of the capacitor C4 is connected with a RCV1 port of the network transformer T1, the other end of the capacitor C3 and the other end of the capacitor C4 are connected with the ground, a transient diode TVS1 is connected between the TD1+ port and the TD 1-port in parallel, and a transient diode TVS2 is connected between the RD1+ port and the RD 1-port in parallel;
the network transformer T2 is connected to the TXOP2 port, the TXON2 port, the RXIP2 port and the RXIN2 port of the second data input port group of the switch chip U1 through the td2+ port, the TD 2-port, the rd2+ port and the RD 2-port in the second data output port group, one end of the capacitor C5 is connected to the TVC2 port of the network transformer T2, one end of the capacitor C6 is connected to the RCV2 port of the network transformer T2, the other end of the capacitor C5 and the other end of the capacitor C6 are connected to the ground, the transient diode TVS3 is connected in parallel between the td2+ port and the TD 2-port, the transient diode TVS4 is connected in parallel between the rd2+ port and the RD 2-port, the first protection unit 21 is connected to the first AC port, and the second protection unit 22 is connected to the second AC port.
As described in the above embodiment, the transient diode TVS1 is connected in parallel between the td1+ port and the TD 1-port, so as to prevent the network transformer T1 and the switch chip U1 from being damaged due to transient interference of signals when the network signal is transmitted between the network transformer T1 and the switch chip U1 through the td1+ port and the TD 1-port, and similarly the transient diode TVS2 is connected in parallel between the td2+ port and the TD 2-port, so as to prevent the network transformer T2 and the switch chip U2 from being damaged due to transient interference of signals when the network signal is transmitted between the network transformer T2 and the switch chip U1 through the td2+ port and the TD 2-port,
in addition, the first protection unit 21 is configured to be automatically turned on when the power supply signal transmitted in the network transformer T1 is in a surge condition, so as to implement a surge protection function for the network transformer T1, and the second protection unit 22 is similarly configured to be automatically turned on when the power supply signal transmitted in the network transformer T2 is in a surge condition, so as to implement a surge protection function for the network transformer T2.
Referring to fig. 2, in one embodiment, the first protection unit 21 includes a resistor R2, a resistor R3, a capacitor C7, a capacitor C8, a discharge tube GDT1, and a discharge tube GDT2.
The first AC port 6 comprises an AC1+ end and an AC 1-end, one end of a resistor R2 is connected with the AC 1-end and one end of a discharge tube GDT1, the other end of the resistor R2 is connected with one end of a capacitor C7, the other end of the capacitor C7 is connected with the other end of the discharge tube GDT1 and grounded, one end of a resistor R3 is connected with the AC1+ end and one end of the discharge tube GDT2, the other end of the resistor R3 is connected with one end of a capacitor C8, and the other end of the capacitor C8 is connected with the other end of the discharge tube GDT2 and grounded;
further, the second protection unit 22 includes a resistor R4, a resistor R5, a capacitor C9, a capacitor C10, a discharge tube GDT3, and a discharge tube GDT4;
the second AC port 7 includes an AC2+ end and an AC 2-end, one end of the resistor R4 is connected to the AC 2-end and one end of the discharge tube GDT3, the other end of the resistor R4 is connected to one end of the capacitor C9, the other end of the capacitor C9 is connected to the other end of the discharge tube GDT3 and grounded, one end of the resistor R5 is connected to the AC2+ end and one end of the discharge tube GDT4, the other end of the resistor R5 is connected to one end of the capacitor C10, and the other end of the capacitor C10 is connected to the other end of the discharge tube GDT4 and grounded;
in addition, a resistor R6 is connected in series between the AC1+ end and the AC2+ end, and a resistor R7 is connected in series between the AC 1-end and the AC 2-end.
As described in the above embodiment, the discharge tube GDT1 monitors the power supply signal transmitted from the AC 1-terminal, when a surge condition occurs in the power supply signal transmitted from the AC 1-terminal, the discharge tube GDT1 is turned on to ground the AC 1-terminal and to derive the power supply signal, thereby preventing the power supply signal in the surge condition from damaging the network transformer T1, the discharge tube GDT2 monitors the power supply signal transmitted from the AC1+ terminal, and when a surge condition occurs in the power supply signal transmitted from the AC1+ terminal, the discharge tube GDT2 is turned on to ground the AC1+ terminal and to derive the power supply signal, thereby preventing the power supply signal in the surge condition from damaging the network transformer T1;
Similarly, the discharge tube GDT3 monitors the power supply signal transmitted from the AC 2-end, when the power supply signal transmitted from the AC 2-end is in a surge condition, the discharge tube GDT3 is turned on to ground the AC 2-end and to guide out the power supply signal, thereby preventing the power supply signal in the surge condition from damaging the network transformer T2, the discharge tube GDT4 monitors the power supply signal transmitted from the AC2+ end, and when the power supply signal transmitted from the AC2+ end is in a surge condition, the discharge tube GDT4 is turned on to ground the AC2+ end and to guide out the power supply signal, thereby preventing the power supply signal in the surge condition from damaging the network transformer T2.
It will be appreciated that in this embodiment, R6 and R7 are each 0R resistor, and AC1+ and AC2+ are equivalent to being directly connected together, and AC 1-and AC 2-are the same.
Referring to fig. 2 and 3, in one embodiment, the power module 4 includes a rectifier bridge D1, a transient suppression diode D2, a diode D3, a diode D4, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, and a PD chip U2;
the input end A of the rectifier bridge D1 is connected with the AC2+ end, the input end B of the rectifier bridge D1 is connected with the AC 2-end, the output end of the positive pole of the rectifier bridge D1 is connected with one end of a transient suppression diode D2, the positive pole of a capacitor C11, one end of a resistor R10, the VDD end of a PD chip U2, the positive pole of a capacitor C12 and the positive pole of a diode D4, the output end of the negative pole of the rectifier bridge D1 is grounded and connected with the other end of the transient suppression diode D2, the negative pole of the capacitor C11, one end of a resistor R8, one end of a resistor R9 and the front end of the PD chip U2 are grounded, the other end of the resistor R8 is connected with the RILM end of the PD chip U2, the other end of the resistor R9 is connected with the RCLASS end of the PD chip U2, the other end of the resistor R10 is connected with the RDET end of the PD chip U2, the VDD end of the PD chip U2 is also connected with one end of the resistor R11, the other end of the resistor R11 is connected with the negative pole of the diode D3 and grounded, the OOD end of the PD chip U2 is connected with the positive pole of the capacitor C12 and the positive pole of the capacitor C13 and the positive pole of the capacitor C4 is connected with the positive pole of the capacitor C13 and the negative pole of the capacitor C13 and the capacitor C2 is connected with the positive pole of the capacitor C13 and the capacitor C and the negative pole of the capacitor C13 is connected with the ground.
As described in the above embodiment, the rectifier bridge D1 is configured to rectify the power supply information output from the network transformer T2 via the AC2+ end and the AC 2-end, and then send the rectified power supply information to the PD chip U2, where the PD chip U2 monitors the input power supply information according to a setting program, so as to implement functions of under-voltage protection, overheat protection, current limiting protection, and the like, where the transient suppression diode D2 is configured to monitor the power supply signal transmitted from the AC 2-end, and when a surge condition occurs in the power supply signal transmitted from the AC 2-end, the transient suppression diode D2 is turned on to ground the AC 2-end and derive the power supply signal, so as to prevent the power supply signal with the surge condition from damaging the PD chip U2;
in addition, in the present embodiment, the front-end ground terminal of the PD chip U2 is controlled to be turned on by the control signal acquired by the PD chip U2.
Referring to fig. 4, in one embodiment, the switch module 1 further includes a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a capacitor C15, a capacitor C16, and a capacitor C17;
the IBREF end of the exchange chip U1 is connected with one end of a resistor R13, the other end of the resistor R13 is grounded, the AVDDL end of the exchange chip U1 is connected with the AVDDLPLL end of the exchange chip U1 and is connected with the external power supply, the V33IN end of the exchange chip U1 is connected with the external power supply and is connected with one end of a capacitor C15 and one end of a capacitor C16, the other end of the capacitor C15 and the other end of the capacitor C16 are connected with the ground, the V10OUT end of the exchange chip U1 is connected with the DVDDL end of the exchange chip U1 and is connected with the external power supply, the P2LED/DIS_RST_BLNK end of the exchange chip U1 is connected with one end of a resistor R14, the other end of the resistor R14 is connected with the LED2 end IN an interface module 5, the P1LED end of the exchange chip U1 is connected with one end of the resistor R15, the other end of the resistor R15 is connected with the end of the LED1 IN the interface module 5, the RESETB end of the exchange chip U1 is connected with the resistor R17 and one end of the capacitor C17, the other end of the resistor R17 is connected with one end of the resistor R16 and the DVDDH end of the exchange chip U1 and is connected with external power supply, the other end of the resistor R16 is connected with the P0LED/DIS_EEE end of the exchange chip U1, the other end of the capacitor C17 is grounded, the SDA/MDIO end of the exchange chip U1 is connected with one end of the resistor R17, the SCL/MDC end of the exchange chip U1 is connected with one end of the resistor R18, the other end of the resistor R17 is connected with the other end of the resistor R18 and is connected with external power supply, and the LEDs 1 and the LEDs 2 are used for indicating the connection states of the first network port unit 51 and the second network port unit 52.
Referring to fig. 6, the present invention further discloses a power supply method, including a first network port unit 51, a second network port unit 52, a first network transformation module 2, a second network transformation module 3, a switching module 1 and a power module 4, the first network port unit 51 is connected with the first network transformation module 2, the second network port unit 52 is connected with the second network transformation module 3, the first network transformation module 2 and the second network transformation module 3 are connected with each other and the switching module 1, and the second network transformation module 3 is also connected with the power module 4, the method includes:
s1, acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
s2, inputting the transmission signal into the first network transformation module for coupling, so as to extract a network signal in the transmission signal;
s3, sending the network signals to the exchange module for data exchange, generating network exchange signals, and sending the network exchange signals to the second network transformation module;
s4, the first network transformation module sends the power supply signal to the second network transformation module for modulation;
and S5, the second network transformation module outputs the network switching signals and the power supply signals through the second network port unit, so that power transmission and network transmission among a plurality of devices are realized.
As described in the above steps, the first network port unit 51 is used for connecting a primary PD device, the second network port unit 52 is used for connecting a secondary PD device that needs to run depending on a transmission signal input by the primary PD device, then the primary PD device inputs a transmission signal to the first network port unit 51, where the transmission signal is a network signal with a power supply signal, and then the first network transformer module 2 couples the transmission signal, so that the network signal in the transmission signal is coupled to the secondary of the switch module 1, and is input to the switch module 1 for normal network data exchange and transmission, and then modulated to the second network transformer module 3;
at this time, the power supply signal is blocked at the primary stage of the first network voltage transformation module 2, so that the first network voltage transformation module 2 inputs the power supply signal to the power supply module 4 for rectification, and meanwhile, the first network voltage transformation module 2 transmits the power supply signal to the second network voltage transformation module 3 for modulation through R6 and R7;
the network transformer T2 processes the network signal input by the switching module 1 and the power supply signal input by the second network transforming module 3 at the same time, and the second network transforming module 3 outputs the input network signal and the power supply signal by the second network port unit 52, so that the secondary PD device connected to the second network port unit 52 can operate normally via the power supply signal and the network signal, and thus, the function of performing power supply by hand depending on the transmission signal input by the primary PD device is achieved, and the subsequently connected secondary PD device is achieved.
Referring to fig. 7, the present invention further discloses a power supply system, which includes a first network port unit 51, a second network port unit 52, a first network transformation module 2, a second network transformation module 3, a switching module 1 and a power module 4, the first network port unit 51 is connected with the first network transformation module 2, the second network port unit 52 is connected with the second network transformation module 3, the first network transformation module 2 and the second network transformation module 3 are connected with each other and the switching module 1, and the second network transformation module 3 is further connected with the power module 4, the system includes:
an acquiring unit 100, configured to acquire a transmission signal input from the first network port unit, where the transmission signal is a network signal with a power supply signal;
the coupling unit 200 is configured to input the transmission signal to the first network transformer module for coupling, so as to extract a network signal in the transmission signal;
the switching unit 300 is configured to send the network signal to the switching module for data exchange, generate a network switching signal, and send the network switching signal to the second network transformation module;
the rectification unit 400 is configured to send the power supply signal to the second network transformer module for modulation;
And the output unit 500 is configured to output the network switching signal and the power supply signal through the second network port unit through the second network transformation module, so as to realize power transmission and network transmission between a plurality of devices.
The above units are for executing the above power supply system, and will not be described here.
FIG. 8 illustrates an internal block diagram of a computer device in one embodiment. The computer device may be, in particular, a server including, but not limited to, a high performance computer and a high performance computer cluster. As shown in fig. 3, the computer device includes a processor, a memory, and a network interface connected by a system bus. The memory includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system, and may also store a computer program which, when executed by a processor, causes the processor to implement the power supply method. The internal memory may also store a computer program which, when executed by the processor, causes the processor to perform the power supply method.
In one embodiment, the power supply method provided by the invention can be implemented in the form of a computer program, and the computer program can be run on a computer device as shown in fig. 8. The memory of the computer device may store therein various program templates that make up the power supply system. Such as: the device comprises an acquisition unit 100, a coupling unit 200, a switching unit 300, a rectifying unit 400 and an output unit 500.
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of when executing the computer program:
the method comprises the steps of obtaining a transmission signal input from a first network port unit, wherein the transmission signal is a network signal with a power supply signal, inputting the transmission signal into a first network transformation module for coupling, so that the power supply signal and the network signal in the transmission signal are extracted, the network signal is sent to a switching module for data switching, after a network switching signal is generated, the network signal is sent to a second network transformation module for modulation, the power supply signal is sent to a power supply module for rectification, after a rectification signal is generated, the network signal is sent to the second network transformation module, and the network switching signal and the rectification signal are output through the second network port unit, so that power transmission and network transmission among a plurality of devices are realized.
The method has the advantages that the power supply signals input by the primary PD equipment are sent to the second network transformation module after being regulated by the first network transformation module and rectified by the power supply module by the interface module and finally output to the connected secondary PD equipment by the interface module, so that the function of hand-held power supply between the two PD equipment is realized, the problem that the power waste is caused because the power consumption of the conventional POE switch can only supply power to a single PD equipment under the premise that the power consumption meets the power supply condition of a plurality of PD equipment is solved, and the utilization rate of system power is improved and the energy consumption ratio of the system is improved.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), and double data rates, among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The examples described above represent only a few embodiments of the present invention and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The network cable power supply circuit is characterized by comprising a switching module, a first network voltage transformation module, a second network voltage transformation module, a power supply module and an interface module;
the interface module is internally provided with a first network port unit and a second network port unit, the positive electrode port group of the first network port unit is connected with the positive electrode input port group of the network transformer T1 in the first network transformation module, the negative electrode port group of the first network port unit is connected with the negative electrode input port group of the network transformer T1 in the first network transformation module, the positive electrode port group of the second network port unit is connected with the positive electrode input port group of the network transformer T2 in the second network transformation module, the negative electrode port group of the second network port unit is connected with the negative electrode input port group of the network transformer T2 in the second network transformation module, the first data output port group of the network transformer T1 is connected with the first data input port group of the switching chip U1 in the switching module, the second data output port group of the network transformer T2 is connected with the second data input port group of the switching chip U1 in the switching module, and the first AC port of the network transformer T1 is connected with the second AC port of the network transformer T2;
The first network port unit is used for connecting a first-stage PD device, the second network port unit 52 is used for connecting a second-stage PD device that needs to run depending on a transmission signal input by the first-stage PD device, the first-stage PD device inputs a transmission signal to the first network port unit, the transmission signal is a network signal with a power supply signal, and then the network transformer T1 in the first network transformer module couples the transmission signal, so that the network signal in the transmission signal is coupled to the second stage of the network transformer T1, and the transmission signal is modulated to the network transformer T2 after being input to the switching module for normal network data switching and transmission; at this time, the power supply signal is blocked at the primary side of the network transformer T1, and then the network transformer T1 inputs the power supply signal to the power supply module to rectify, and meanwhile, the network transformer T1 transmits the power supply signal to the second network transformer module to modulate, and at this time, the network transformer T2 processes the network signal input by the switching module and the power supply signal input by the network transformer T1 at the same time, and then the network transformer T2 outputs the input network signal and the power supply signal by the second network port unit, and the secondary PD device connected to the second network port unit can operate normally via the power supply signal and the network signal.
2. The network cable power supply circuit of claim 1, wherein the switching module is further provided with a main camera network port unit, a secondary camera network port unit and a timing unit;
the main camera network port unit comprises an MDI_TP end, an MDI_TN end, an MDI_RN end and an MDI_TP end, which are respectively connected with an RXIP0 end, an RXIN0 end, an TXON0 end and a TXOP0 end of the exchange chip U1, wherein an FMDI_RP end, an FMDI_RN end, an FMDI_TN end and an FMDI_TP end in the auxiliary camera network port unit are respectively connected with a TXOP3 end, a TXON3 end, an RXIN3 end and an RXIP3 end of the exchange chip U1, one end of the time sequence unit is connected with an X1 end of the exchange chip U1, and the other end of the time sequence unit is connected with an X0 end of the exchange chip U1;
the time sequence unit comprises a crystal oscillator XTAL1, a capacitor C2 and a resistor R1;
the first pin of the crystal oscillator XTAL1 is connected with one end of a capacitor C1, one end of a resistor R1 and the X1 end of the exchange chip U1, the other end of the capacitor C1 is connected with the 2 nd pin of the crystal oscillator XTAL1, the 4 th pin of the crystal oscillator XTAL1 and one end of a capacitor C2 and grounded, and the other end of the capacitor C2 is connected with the 3 rd pin of the crystal oscillator XTAL1, the other end of the resistor R1 and the X0 end of the exchange chip U1.
3. The network cable power supply circuit of claim 1, wherein the first network transformer module further comprises a capacitor C3, a capacitor C4, a transient diode TVS1, a transient diode TVS2, and a first protection unit, and the second network transformer module further comprises a capacitor C5, a capacitor C6, a transient diode TVS3, a transient diode TVS4, and a second protection unit;
The network transformer T1 is respectively connected with a TXOP1 port, a TXON1 port, a RXIP1 port and a RXIN1 port of a first data input port group of the switching chip U1 through a TD1+ port, a TD 1-port, a RD1+ port and a RD 1-port in the first data output port group, one end of the capacitor C3 is connected with a TVC1 port of the network transformer T1, one end of the capacitor C4 is connected with a RCV1 port of the network transformer T1, the other end of the capacitor C3 and the other end of the capacitor C4 are connected with the ground, a transient diode TVS1 is connected between the TD1+ port and the TD 1-port in parallel, and a transient diode TVS2 is connected between the RD1+ port and the RD 1-port in parallel;
the network transformer T2 is connected to the TXOP2 port, the TXON2 port, the RXIP2 port and the RXIN2 port of the second data input port group of the switch chip U1 through the td2+ port, the TD 2-port, the rd2+ port and the RD 2-port in the second data output port group, one end of the capacitor C5 is connected to the TVC2 port of the network transformer T2, one end of the capacitor C6 is connected to the RCV2 port of the network transformer T2, the other end of the capacitor C5 and the other end of the capacitor C6 are connected to the ground, the transient diode TVS3 is connected in parallel between the td2+ port and the TD 2-port, the transient diode TVS4 is connected in parallel between the rd2+ port and the RD 2-port, the first protection unit 21 is connected to the first AC port, and the second protection unit 22 is connected to the second AC port.
4. The network cable power supply circuit of claim 3, wherein the first protection unit comprises a resistor R2, a resistor R3, a capacitor C7, a capacitor C8, a discharge tube GDT1 and a discharge tube GDT2,
the first AC port comprises an AC1+ end and an AC 1-end, one end of a resistor R2 is connected with the AC 1-end and one end of a discharge tube GDT1, the other end of the resistor R2 is connected with one end of a capacitor C7, the other end of the capacitor C7 is connected with the other end of the discharge tube GDT1 and grounded, one end of a resistor R3 is connected with the AC1+ end and one end of the discharge tube GDT2, the other end of the resistor R3 is connected with one end of a capacitor C8, and the other end of the capacitor C8 is connected with the other end of the discharge tube GDT2 and grounded;
further, the second protection unit includes a resistor R4, a resistor R5, a capacitor C9, a capacitor C10, a discharge tube GDT3, and a discharge tube GDT4;
the second AC port comprises an AC2+ end and an AC 2-end, one end of a resistor R4 is connected with the AC 2-end and one end of a discharge tube GDT3, the other end of the resistor R4 is connected with one end of a capacitor C9, the other end of the capacitor C9 is connected with the other end of the discharge tube GDT3 and grounded, one end of a resistor R5 is connected with the AC2+ end and one end of the discharge tube GDT4, the other end of the resistor R5 is connected with one end of a capacitor C10, and the other end of the capacitor C10 is connected with the other end of the discharge tube GDT4 and grounded;
In addition, a resistor R6 is connected in series between the AC1+ end and the AC2+ end, and a resistor R7 is connected in series between the AC 1-end and the AC 2-end.
5. The network cable power supply circuit of claim 1, wherein the power supply module comprises a rectifier bridge D1, a transient suppression diode D2, a diode D3, a diode D4, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, and a PD chip U2;
the input end A of the rectifier bridge D1 is connected with the AC2+ end, the input end B of the rectifier bridge D1 is connected with the AC 2-end, the output end of the positive pole of the rectifier bridge D1 is connected with one end of a transient suppression diode D2, the positive pole of a capacitor C11, one end of a resistor R10, the VDD end of a PD chip U2, the positive pole of a capacitor C12 and the positive pole of a diode D4, the output end of the negative pole of the rectifier bridge D1 is grounded and connected with the other end of the transient suppression diode D2, the negative pole of the capacitor C11, one end of a resistor R8, one end of a resistor R9 and the front end of the PD chip U2 are grounded, the other end of the resistor R8 is connected with the RILM end of the PD chip U2, the other end of the resistor R9 is connected with the RCLASS end of the PD chip U2, the other end of the resistor R10 is connected with the RDET end of the PD chip U2, the VDD end of the PD chip U2 is also connected with one end of the resistor R11, the other end of the resistor R11 is connected with the negative pole of the diode D3 and grounded, the OOD end of the PD chip U2 is connected with the positive pole of the capacitor C12 and the positive pole of the capacitor C13 and the positive pole of the capacitor C4 is connected with the positive pole of the capacitor C13 and the negative pole of the capacitor C13 and the capacitor C2 is connected with the positive pole of the capacitor C13 and the capacitor C and the negative pole of the capacitor C13 is connected with the ground.
6. The network cable power supply circuit of claim 5, wherein the switching module further comprises a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a capacitor C15, a capacitor C16, and a capacitor C17;
the IBREF end of the exchange chip U1 is connected with one end of a resistor R13, the other end of the resistor R13 is grounded, the AVDDL end of the exchange chip U1 is connected with the AVDDLPLL end of the exchange chip U1 and is connected with the external power supply, the V33IN end of the exchange chip U1 is connected with the external power supply and is connected with one end of a capacitor C15 and one end of a capacitor C16, the other end of the capacitor C15 and the other end of the capacitor C16 are connected with the ground, the V10OUT end of the exchange chip U1 is connected with the DVDDL end of the exchange chip U1 and is connected with the external power supply, the P2LED/DIS_RST_BLNK end of the exchange chip U1 is connected with one end of a resistor R14, the other end of the resistor R14 is connected with the LED2 end IN the interface module, the P1LED end of the exchange chip U1 is connected with one end of a resistor R15, the other end of the resistor R15 is connected with the LED1 end IN the interface module, the RESETB end of the exchange chip U1 is connected with a resistor R17 and one end of a capacitor C17, the other end of the resistor R17 is connected with one end of a resistor R16 and the DVDDH end of the exchange chip U1 and is connected with external power supply, the other end of the resistor R16 is connected with the P0LED/DIS_EEE end of the exchange chip U1, the other end of the capacitor C17 is grounded, the SDA/MDIO end of the exchange chip U1 is connected with one end of the resistor R17, the SCL/MDC end of the exchange chip U1 is connected with one end of a resistor R18, and the other end of the resistor R17 is connected with the other end of the resistor R18 and is connected with external power supply.
7. The utility model provides a power supply method which is characterized in that, including first net gape unit, second net gape unit, first network vary voltage module, second network vary voltage module, exchange module and power module, first net gape unit with first network vary voltage module is connected, second net gape unit with second network vary voltage module is connected, first network vary voltage module and second network vary voltage module between interconnect and with exchange module links to each other, second network vary voltage module still with power module links to each other, the method includes:
acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
inputting the transmission signal to the first network transformation module for coupling, thereby extracting a network signal in the transmission signal;
the network signals are sent to the exchange module for data exchange, and after the network exchange signals are generated, the network signals are sent to the second network transformation module;
directly sending the power supply signal to the second network transformation module for modulation through the middle tap of the first network transformation module;
the second network transformation module outputs the network switching signal and the power supply signal through the second network port unit, so that power transmission and network transmission among a plurality of devices are realized;
The first network port unit is used for connecting a first-stage PD device, the second network port unit 52 is used for connecting a second-stage PD device that needs to run depending on a transmission signal input by the first-stage PD device, the first-stage PD device inputs a transmission signal to the first network port unit, the transmission signal is a network signal with a power supply signal, and then the network transformer T1 in the first network transformer module couples the transmission signal, so that the network signal in the transmission signal is coupled to the second stage of the network transformer T1, and the transmission signal is modulated to the network transformer T2 after being input to the switching module for normal network data switching and transmission; at this time, the power supply signal is blocked at the primary side of the network transformer T1, and then the network transformer T1 inputs the power supply signal to the power supply module to rectify, and meanwhile, the network transformer T1 transmits the power supply signal to the second network transformer module to modulate, and at this time, the network transformer T2 processes the network signal input by the switching module and the power supply signal input by the network transformer T1 at the same time, and then the network transformer T2 outputs the input network signal and the power supply signal by the second network port unit, and the secondary PD device connected to the second network port unit can operate normally via the power supply signal and the network signal.
8. The utility model provides a power supply system, its characterized in that includes first net gape unit, second net gape unit, first network vary voltage module, second network vary voltage module, exchange module and power module, first net gape unit with first network vary voltage module is connected, second net gape unit with second network vary voltage module is connected, first network vary voltage module and second network vary voltage module between link to each other and with exchange module links to each other, second network vary voltage module still with power module links to each other, the system includes:
the acquisition unit is used for acquiring a transmission signal input from the first network port unit, wherein the transmission signal is a network signal with a power supply signal;
the coupling unit is used for inputting the transmission signal into the first network transformation module for coupling so as to extract a network signal in the transmission signal;
the switching unit is used for sending the network signals to the switching module for data switching, generating network switching signals and sending the network switching signals to the second network transformation module;
the rectification unit is used for sending the power supply signal to the second network transformation module for modulation;
The output unit is used for outputting the network switching signal and the power supply signal through the second network port unit through the second network transformation module, so that power transmission and network transmission among a plurality of devices are realized;
the first network port unit is used for connecting a first-stage PD device, the second network port unit 52 is used for connecting a second-stage PD device that needs to run depending on a transmission signal input by the first-stage PD device, the first-stage PD device inputs a transmission signal to the first network port unit, the transmission signal is a network signal with a power supply signal, and then the network transformer T1 in the first network transformer module couples the transmission signal, so that the network signal in the transmission signal is coupled to the second stage of the network transformer T1, and the transmission signal is modulated to the network transformer T2 after being input to the switching module for normal network data switching and transmission; at this time, the power supply signal is blocked at the primary side of the network transformer T1, and then the network transformer T1 inputs the power supply signal to the power supply module to rectify, and meanwhile, the network transformer T1 transmits the power supply signal to the second network transformer module to modulate, and at this time, the network transformer T2 processes the network signal input by the switching module and the power supply signal input by the network transformer T1 at the same time, and then the network transformer T2 outputs the input network signal and the power supply signal by the second network port unit, and the secondary PD device connected to the second network port unit can operate normally via the power supply signal and the network signal.
9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the power supply method according to claim 7 when executing the computer program.
10. A computer-readable storage medium storing a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the power supply method of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211632565.2A CN115987700B (en) | 2022-12-19 | 2022-12-19 | Network cable power supply circuit, power supply method, system, computer equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211632565.2A CN115987700B (en) | 2022-12-19 | 2022-12-19 | Network cable power supply circuit, power supply method, system, computer equipment and medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115987700A CN115987700A (en) | 2023-04-18 |
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| CN209201095U (en) * | 2019-01-16 | 2019-08-02 | 北京梦想加信息技术有限公司 | A kind of accessing wirelessly access device |
| CN110460449A (en) * | 2018-05-08 | 2019-11-15 | 杭州海康威视数字技术股份有限公司 | Repeater and method of supplying power to |
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| TWI487319B (en) * | 2011-03-23 | 2015-06-01 | Wistron Neweb Corp | Power-over-ethernet relay system, power injector and access point |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110460449A (en) * | 2018-05-08 | 2019-11-15 | 杭州海康威视数字技术股份有限公司 | Repeater and method of supplying power to |
| CN209201095U (en) * | 2019-01-16 | 2019-08-02 | 北京梦想加信息技术有限公司 | A kind of accessing wirelessly access device |
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