CN114844529B

CN114844529B - Power line communication circuit and system based on solid-state power controller

Info

Publication number: CN114844529B
Application number: CN202210378069.2A
Authority: CN
Inventors: 吕进
Original assignee: Dinglong Aviation Technology Co ltd
Current assignee: Dinglong Aviation Technology Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2024-02-23
Anticipated expiration: 2042-04-12
Also published as: CN114844529A

Abstract

The embodiment of the invention discloses a power line communication circuit and a system based on a solid-state power controller, wherein the power line communication circuit comprises: a plurality of solid state power controller SSPC functional modules, the SSPC functional modules comprising: the system comprises an SSPC engine, a solid-state switching device SSSD, a carrier frequency blocking and fusing link CFB/FL function module, wherein a first end of the SSPC engine is connected with a first end of the SSSD, a second end of the SSPC engine is connected with a feeder line connected with a second end of the SSSD, the feeder line is used for power input, a third end of the SSPC engine is connected with the feeder line connected with the third end of the SSSD, a first end of the CFB/FL function module is connected with the feeder line connected with the third end of the SSSD, a second end of the CFB/FL function module is connected with an output end of the feeder line, and the CFB/FL function module is used for preventing a specified PLC signal on the feeder line from being transmitted through the CFB/FL function module, preventing the PLC signal from being transmitted to an unexpected direction in the power line communication process, and effectively solving the problem of specific communication requirement of aircraft interconnection and the problem of uncertainty in communication transmission.

Description

Power line communication circuit and system based on solid-state power controller

Technical Field

The invention relates to the technical field of aircraft power distribution systems, in particular to a power line communication circuit and system based on a solid-state power controller.

Background

In modern, typical aircraft, power is distributed over the various devices or loads on the aircraft via a power distribution system, and such widely distributed feeder networks motivate technicians to utilize the feeder networks for data communications, i.e., to implement such ideas and requirements via power line communications (Power Line Communication, PLC) technology, without the need to rely on dedicated communication data networks that can result in additional weight and cost between the various devices or loads on the aircraft.

However, such feeder lines for aircraft are not designed for data communications, which allows technicians to use the feeder network for data communications, often focusing on providing a generic power line communications scheme or treating the feeder network as a complex overall process, thereby allowing PLC signals to be transported throughout the feeder line during power line communications, failing to take into account specific communications requirements for aircraft interconnectivity and failing to take into account uncertainty in communications transmissions, such as: uncertainty signal attenuation, noise introduction from other various signal sources in an uncertainty feeder network, and the like.

Disclosure of Invention

Based on this, it is necessary to provide a power line communication circuit and system based on a solid state power controller to solve the problem of specific communication requirement of aircraft interconnectivity and the problem of uncertainty in communication transmission.

In a first aspect, the present invention provides a solid state power controller based power line communication circuit comprising:

a plurality of solid state power controller SSPC functional modules, the SSPC functional modules comprising: SSPC engine, solid state switching device SSSD, carrier frequency blocking and fuse link CFB/FL function module;

the first end of the SSPC engine is connected with the first end of the SSSD, the second end of the SSPC engine is connected with a feeder line connected with the second end of the SSSD, the feeder line is used for inputting power, and the third end of the SSPC engine is connected with the feeder line connected with the third end of the SSSD;

a first end of the CFB/FL function module is connected with the feeder line connected with the third end of the SSSD, and a second end of the CFB/FL function module is connected with the feeder line connected with a downstream terminal;

the CFB/FL function module is used for preventing the appointed PLC signals on the feeder line from being transmitted through the CFB/FL function module.

Optionally, the SSPC function module further includes: a first PLC functional module;

the first PLC functional module includes: the system comprises a first PLC modem and a first power line coupler, wherein one end of the first PLC modem is connected with one end of the first power line coupler;

the fourth end of the SSPC engine is connected with the other end of the first PLC modem, and the other end of the first power line coupler is connected with the second end of the CFB/FL function module.

Optionally, the power line communication circuit further includes: a first supervisory controller;

the first end of the first supervision controller is connected with an external serial data bus, the second end of the first supervision controller is connected with an SSPC internal serial data bus, and the SSPC internal serial data bus is connected with a fifth end of the SSPC engine.

Optionally, the power line communication circuit further includes: a second PLC functional module;

the second PLC functional module includes: the system comprises a first PLC modem and a first power line coupler, wherein one end of the first PLC modem is connected with one end of the first power line coupler;

the third end of the first supervision controller is connected with the other end of the second PLC modem, and the other end of the second power line coupler is connected with the input end of the feeder line.

Optionally, the power line communication circuit further includes: the third PLC functional module, the second supervision controller and the first demultiplexer;

the third PLC function module includes: the system comprises a third PLC modem and a third power line coupler, wherein one end of the third PLC modem is connected with one end of the third power line coupler;

the first end of the second supervisory controller is connected with an external serial data bus, the second end of the second supervisory controller is connected with the first end of the first demultiplexer, the third end of the second supervisory controller is connected with the other end of the third PLC modem, the fourth end of the second supervisory controller is connected with an SSPC internal serial data bus, and the SSPC internal serial data bus is connected with the fourth end of the SSPC engine;

the other end of the third power line coupler is connected with the second end of the first demultiplexer, the first demultiplexer is provided with a plurality of third ends, and one third end of the first demultiplexer is connected with the second end of one CFB/FL functional module.

Optionally, the power line communication circuit further includes: a third terminal of the first demultiplexer is connected to the input terminal of the feeder line.

Optionally, the power line communication circuit further includes: the system comprises a fourth PLC functional module, a third supervision controller, a second demultiplexer and a connector DCSI;

the fourth PLC function module includes: the system comprises a fourth PLC modem and a fourth power line coupler, wherein one end of the fourth PLC modem is connected with one end of the fourth power line coupler;

the first end of the third supervision controller is connected with an external serial data bus, and the second end of the third supervision controller is connected with an SSPC internal serial data bus;

the SSPC internal serial data bus is connected with the fourth end of the SSPC engine, the SSPC internal serial data bus is connected with the other end of the fourth PLC modem, and the SSPC internal serial data bus is connected with one end of the DCSI;

the other end of the DCSI is connected with the first end of the second demultiplexer, the second end of the second demultiplexer is connected with the other end of the fourth power line coupler, the second demultiplexer is provided with a plurality of third ends, and one third end of the second demultiplexer is connected with the second end of one CFB/FL functional module.

Optionally, the power line communication circuit further includes: a third terminal of the second demultiplexer is connected to the input terminal of the feeder line.

In a second aspect, the present invention provides a solid state power controller based power line communication system comprising: a main switchboard PDP, a plurality of secondary distribution boxes SPDBs;

the SPDB includes: a plurality of solid state power controller printed circuit board assemblies or lane replaceable modules SSPC PBA/LRMs, the SSPC PBA/LRM being any one of the solid state power controller based power line communication circuits of the first aspect;

the PDP has a plurality of first ends, and one first end of the PDP is connected with one or more of the SSPC PBA/LRMs.

Optionally, the power line communication system further comprises: a plurality of downstream terminals;

the downstream terminal includes: a fifth PLC function module, a load;

the fifth PLC function module includes: a fifth PLC modem and a fifth power line coupler, wherein one end of the fifth PLC modem is connected with one end of the fifth power line coupler;

the first end of the load is connected with the other end of the fifth power line coupler, and the second end of the load is connected with a feeder line connected with the fifth PLC modem;

and the SSPC functional module of the SSPC PBA/LRM is connected with the load second end.

The embodiment of the invention has the following beneficial effects: a power line communication circuit and system based on a solid state power controller, the power line communication circuit comprising: a plurality of solid state power controller SSPC functional modules, the SSPC functional modules comprising: the system comprises an SSPC engine, a solid-state switching device SSSD, a carrier frequency blocking and fusing link CFB/FL function module, wherein a first end of the SSPC engine is connected with a first end of the SSSD, a second end of the SSPC engine is connected with a feeder line connected with a second end of the SSSD, the feeder line is used for inputting power, a third end of the SSPC engine is connected with the feeder line connected with a third end of the SSSD, a first end of the CFB/FL function module is connected with the feeder line connected with a third end of the SSSD, a second end of the CFB/FL function module is connected with an output end of the feeder line, and the CFB/FL function module is used for preventing a specified PLC signal on the feeder line from being transmitted through the CFB/FL function module, preventing the PLC signal from being transmitted to an unexpected direction in the power line communication process, and effectively solving the uncertainty in the specific communication requirement and communication transmission of aircraft interconnection, for example: uncertainty signal attenuation, noise introduction from other various signal sources in an uncertainty feeder network, and the like.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 below, it being obvious that the drawings in the following description are only some embodiments of the present application, 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 structural diagram of a power line communication circuit based on a solid state power controller according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a CFB/FL module circuit according to an embodiment of the present application;

fig. 3 is another schematic structural diagram of a power line communication circuit based on a solid state power controller according to an embodiment of the present application;

fig. 4 is a schematic diagram of an execution flow of a power line communication circuit based on a solid state power controller in an embodiment of the present application;

fig. 5 is a schematic diagram of another implementation flow of a power line communication circuit based on a solid state power controller according to an embodiment of the present application;

fig. 6 is another schematic structural diagram of a power line communication circuit based on a solid state power controller according to an embodiment of the present application;

fig. 7 is a schematic diagram of another implementation flow of a power line communication circuit based on a solid state power controller according to an embodiment of the present application;

Fig. 8 is a schematic diagram of another implementation flow of a power line communication circuit based on a solid state power controller in an embodiment of the present application;

fig. 9 is another schematic structural diagram of a power line communication circuit based on a solid state power controller in an embodiment of the present application;

fig. 10 is a schematic diagram of another implementation flow of a power line communication circuit based on a solid state power controller according to an embodiment of the present application;

fig. 11 is a schematic diagram of another implementation flow of a power line communication circuit based on a solid state power controller in an embodiment of the present application;

fig. 12 is a schematic structural diagram of a power line communication system based on a solid state power controller according to an embodiment of the present application;

fig. 13 is a schematic diagram of a downstream terminal structure of a power line communication system based on a solid state power controller in an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Referring to fig. 1, a schematic structural diagram of a power line communication circuit based on a solid state power controller in an embodiment of the present application includes: a plurality of SSPC function blocks 110.

Wherein the SSPC function module 110 includes: SSPC engine 111, SSSD 112, CFB/FL function module 113.

Wherein SSPC is Solid state power controller (Solid-State Power Controller, SSPC), SSSD is Solid state switching device (Solid-State Switch Device, SSSD), CFB/FL is carrier frequency blocking and blowing Link (Carrier Frequency Blocking/Fuse Link, CFB/FL).

Wherein a first end of the SSPC engine 111 is connected to a first end of the SSSD 112, a second end of the SSPC engine 111 is connected to a feeder line 120 connected to a second end of the SSSD 112, the feeder line 120 is used for a power input 130, a third end of the SSPC engine 111 is connected to the feeder line 120 connected to a third end of the SSSD 112, a first end of the CFB/FL function module 113 is connected to the feeder line 120 connected to the third end of the SSSD 112, and a second end of the CFB/FL function module 113 is connected to the feeder line 120 connected to the downstream terminal 140.

In the embodiment of the present application, the SSPC engine 111 is configured to control the on-off state of the SSSD 112; SSPC engine 111 is also used to power detect power through feeder 120 and through SSSD 112; the CFB/FL function 113 is for preventing PLC signals of a designated carrier frequency on the feeder line 120 from being transmitted through the CFB/FL function 113.

Among other things, the content of the power detection includes, but is not limited to: current, voltage, temperature, etc.

In the embodiment of the application, by arranging the CFB/FL function module 113 on the feeder line 120 in the SSPC function module 110, the PLC signal on the feeder line 120 is transmitted to the expected direction, so as to realize the communication of the feeder line segment thereof, and effectively solve the specific communication requirement of the aircraft interconnectivity and the uncertainty in communication transmission, for example: uncertainty signal attenuation, noise introduction from other various signal sources in an uncertainty feeder network, and the like.

In the embodiment of the present application, the CFB/FL function module 113 is a bi-directional dual-port circuit, please refer to fig. 2, which is a schematic diagram of the circuit configuration of the CFB/FL function module 113 in the embodiment of the present application, wherein the CFB/FL function module includes: capacitor C210, resistor R220, inductor L1 230, inductor L2 240.

The first end of the capacitor C210 is connected to the first end of the resistor R220, the second end of the capacitor C210 is connected to one end of the inductor L1 230, the second end of the capacitor C210 is connected to one end of the inductor L2 240, the other end of the inductor L2 240 forms a port a 250 with the second end of the resistor R220, and the other end of the inductor L1 230 forms a port B260 with the second end of the resistor R220.

In the embodiment of the application, a resistor R220 is connected in series with a capacitor C210 for suppressing the response of the CFB/FL function module 113 circuit; inductor L1 230 and inductor L2 are made of special fuses with a specific number of turns to provide secondary protection to feed line 120 when SSSD 112 is shorted.

In the embodiment of the present application, the first end of the CFB/FL function module 113 and the second end of the CFB/FL function module 113 correspond to the port a250 and the port B260 of the CFB/FL function module 113, or the port B260 and the port a250, respectively.

In an embodiment of the present application, fig. 2 is a block diagram of implementing CFB/FL function 113 with specified characteristics using LCL filter circuitry.

Wherein the specified characteristics include, but are not limited to: the PLC signal from the carrier frequencies at both ends of the feeder line 120 is provided with high impedance through the CFB/FL function module 113, i.e. functions like a filter; presents a very low impedance to the power coming from the normal input on the feeder 120 through the CFB/FL function 113, i.e. equivalent to the action of a wire, to avoid unnecessary power loss; the current from overheating that would jeopardize the feed line 120 through the CFB/FL function module 113 would blow an open circuit, i.e., equivalent to a fuse.

It should be noted that the schematic circuit shown in fig. 2 is only one example of the CFB/FL function module 113 circuit.

The values of the elements of the CFB/FL function module 113 circuit may be selected by a skilled person according to the carrier frequency of the PLC signal used, and are not limited herein.

Referring to fig. 3, another schematic structure of a power line communication circuit based on a solid state power controller according to an embodiment of the present application is shown, and based on fig. 1, the SSPC function module 110 of the power line communication circuit further includes: the first PLC function module 310.

Wherein the first PLC functional module 310 includes: a first PLC modem 311, a first power line coupler 312.

One end of the first PLC modem 311 is connected to one end of the first power line coupler 312, the fourth end of the SSPC engine 111 is connected to the other end of the first PLC modem 311, and the other end of the first power line coupler 312 is connected to the second end of the CFB/FL function module 113.

In the embodiment of the present application, the SSPC engine 111 is further configured to start the first PLC functional module 310 and transmit data information to the downstream terminal 140; the SSPC engine 111 is further configured to receive feedback data of the downstream terminal 140 through the first PLC functional module 310; the first PLC modem 311 is used for processing PLC signals; the first power line coupler 312 is used to decouple or couple PLC signals.

Wherein, processing the PLC signal includes: the PLC signal is parsed into data information and transmitted to the SSPC engine 111, and the data information transmitted from the SSPC engine 111 is generated into the PLC signal.

Wherein decoupling or coupling comprises: the PLC signal generated by the first PLC modem 311 is coupled to the feeder line 120 to be transmitted to the downstream terminal 140, and the PLC signal transmitted from the downstream terminal 140 is decoupled from the feeder line 120 to be analyzed by the first PLC modem 311.

Wherein the feedback data includes, but is not limited to: voltage value, current value, temperature value, etc. of the downstream terminal 140.

With continued reference to fig. 3, the power line communication circuit further includes: the first supervisory controller 320.

Wherein a first end of the first supervisory controller 320 is connected to the external serial data bus 330, a second end of the first supervisory controller 320 is connected to the SSPC internal serial data bus 340, and the SSPC internal serial data bus 340 is connected to a fifth end of the SSPC engine 111.

In the embodiment of the present application, the first supervisory controller 320 is configured to send control instructions to the SSPC engine 111 and receive feedback information from the SSPC engine 111 through the SSPC internal serial data bus 340; the first supervisory controller 320 is further configured to communicate with an external interface terminal through an external serial data bus 330; the first supervisory controller 320 is also used to perform general internal management tasks, configuration control of the downstream terminal 140, periodic built-in testing, and the like.

Wherein the SSPC internal serial data bus 340 can be: i ² C, etc.; the external serial data bus 330 may be: ARINC 429, CAN bus, etc.; the external interface terminal may be: CMC, etc.

Wherein the control instructions include, but are not limited to: letting the SSPC engine 111 control the on-off state of the SSSD 112, letting the SSPC engine 111 start the first PLC function module and transmit data information to the downstream terminal 140; feedback information includes, but is not limited to: the current switching state of the SSSD 112, the voltage value, the current value, the temperature value, etc. of the feeder 140 where the SSSD 112 is located, and the voltage value, the current value, the temperature value, etc. of the downstream terminal 140.

With continued reference to fig. 3, the power line communication circuit further includes: a second PLC function module 350.

Wherein the second PLC functional module 350 includes: a second PLC modem 351, a second power line coupler 352.

One end of the second PLC modem 351 is connected to one end of the second power line coupler 352, a third end of the first supervisory controller 320 is connected to the other end of the second PLC modem 351, and the other end of the second power line coupler 352 is connected to the input end of the feeder line 120.

In this embodiment of the present application, the first supervisory controller 320 is further configured to implement communication with an external interface terminal through the second PLC functional module 350; the second PLC functional module 350 is further configured to serve as a backup mechanism for implementing a terminal with an external interface; the second PLC modem 351 is for processing a PLC signal; the second power line coupler 352 is used to decouple or couple PLC signals.

Wherein the backup mechanism comprises: in the path of the external interface terminal transmitting the data information to the first supervisory controller 320 through the external serial data bus 330, the data information may still be transmitted from the feeder line 120 of the power input 130 to the first supervisory controller 320 through the second PLC function module 350 when any fault occurs.

Wherein, processing the PLC signal includes: the PLC signal is parsed into data information and transmitted to the first supervisory controller 320, and the data information transmitted from the first supervisory controller 320 is generated into the PLC signal.

Wherein decoupling or coupling comprises: the PLC signal generated by the second PLC modem 351 is coupled to the feeder line 120 to be transmitted to the external interface terminal, and the PLC signal transmitted from the external interface terminal is decoupled from the feeder line 120 to be parsed by the second PLC modem 351.

In a possible implementation manner, referring to fig. 4, based on the schematic structural diagram shown in fig. 3, a schematic execution flow diagram of a power line communication circuit based on a solid state power controller in an embodiment of the present application is shown, and the execution includes:

410: the first supervisory controller receives data information of the external interface terminal through an external serial data bus or a second PLC functional module.

When the first supervisory controller in step 410 receives data information through the external serial data bus, if it detects that the external serial data bus fails, the external interface terminal generates a PLC signal from the external interface terminal, the external interface terminal couples the PLC signal to the feeder line, the PLC signal is transmitted from the power input to the downstream terminal and is transmitted from the power input to the second PLC functional module, the CFB/FL functional module prevents the PLC signal from being transmitted from the power input to the downstream terminal, the second PLC functional module decouples the PLC signal from the feeder line and parses the PLC signal into data information, and the first supervisory controller receives the data information.

420: the first supervisory controller sends control instructions to the SSPC engine based on the data information.

430: the SSPC engine sends data information to the first PLC functional module according to the control instruction.

The SSPC engine of step 430 may also control the on/off state of the SSSD according to the data information of the control command.

440: the first PLC functional module generates a PLC signal according to the data information and is coupled to the feeder line.

450: the PLC signals are fed around the feeder.

Wherein the PLC signal of step 450 is delivered to the SSSD by the downstream terminal and delivered to the downstream terminal by the SSSD on the feeder.

460: the CFB/FL function blocks prevent the PLC signal on the feeder from being routed through the CFB/FL function block.

Wherein the CFB/FL function of step 460 prevents the PLC signal from being delivered by the downstream terminal to the SSSD.

470: the downstream terminal decouples the PLC signal from the feeder.

In another possible implementation manner, referring to fig. 5, based on the schematic structural diagram shown in fig. 3, another implementation flow diagram of the power line communication circuit based on the solid state power controller in the embodiment of the present application is shown, where another implementation includes:

510: the downstream terminal couples the PLC signal to the feeder.

Wherein the downstream terminal of step 510 couples the PLC signal to the feeder line based on performing steps 410 through 470 at least once.

520: the PLC signals are fed around the feeder.

Wherein the PLC signal of step 520 is delivered by the downstream terminal to the SSSD and delivered by the downstream terminal to the first PLC functional module.

530: the CFB/FL function blocks prevent the PLC signal on the feeder from being routed through the CFB/FL function block.

Wherein the CFB/FL function module of step 530 prevents the PLC signal from being delivered by the downstream terminal to the SSSD.

540: the first PLC functional module decouples the PLC signal from the feeder line, and generates data information to be sent to the SSPC engine.

550: the SSPC engine generates feedback information from the data information.

The SSPC engine in step 550 may generate feedback information from the data information, or the SSPC engine may generate feedback information from power detection of the power passing through the SSSD.

Wherein, the SSPC engine of step 550 can also generate feedback information when steps 410 to 430 are performed.

560: the first supervisory controller transmits data information to an external interface terminal or transmits a control command to the SSPC engine according to the feedback information.

Wherein, the first supervisory controller in step 560 sends data information to the external interface terminal according to the feedback information includes: the data information can be sent to the external interface terminal through an external data bus; the second PLC functional module can be used for generating the data information into a PLC signal, coupling the PLC signal to a feeder line, and transmitting the PLC signal to the external interface terminal from a power input through the feeder line; the data information can also be sent to the external interface terminal through the external data bus, the external serial data bus is detected to be in fault, and the data information is sent to the external interface terminal through the second PLC functional module again.

The first supervisory controller in step 560 may further send a control command to the SSPC engine according to the feedback information, and at this time, the SSPC engine executes steps 420 to 470 according to the control command.

The first supervisory controller in step 560 may also do nothing according to the feedback information.

In the embodiment of the present application, by setting the CFB/FL function module 113 on the feeder line 120 in the SSPC function module 110, the PLC signals between the first PLC function module 310 and the downstream terminal 140 and the PLC signals between the second PLC function module 350 and the external interface terminal are transmitted in a certain expected direction, which effectively solves the specific communication requirement of the aircraft interconnectivity, and the uncertainty signal attenuation of the first PLC function module 310, the second PLC function module 350 and other PLC function modules in the coupling or decoupling process, the noise introduction of other various signal sources in the uncertainty feeder line network, and the like.

Referring to fig. 6, another schematic structural diagram of a power line communication circuit based on a solid state power controller according to an embodiment of the present application, on the basis of fig. 1, the power line communication circuit further includes: a third PLC function 610, a second supervisory controller 620, a first demultiplexer 630.

The third PLC function module 610 includes: the third PLC modem 611, the third power line coupler 612, one end of the third PLC modem 611 is connected with one end of the third power line coupler 612, the first end of the second supervisory controller 620 is connected with the external serial data bus 330, the second end of the second supervisory controller 620 is connected with the first end of the first demultiplexer 630, the third end of the second supervisory controller 620 is connected with the other end of the third PLC modem 611, the fourth end of the second supervisory controller 620 is connected with the SSPC internal serial data bus 340, the SSPC internal serial data bus 340 is connected with the fourth end of the SSPC engine 111, the other end of the third power line coupler 612 is connected with the second end of the first demultiplexer 630, the first demultiplexer 630 has a plurality of third ends, and one third end of the first demultiplexer 630 is connected with the second end of one CFB/FL function module 113.

In the embodiment of the present application, the second supervisory controller 620 is configured to send control instructions to the SSPC engine 111 and receive feedback information from the SSPC engine 111 through the SSPC internal serial data bus 340; the second supervisory controller 620 is also configured to send channel selection discrete signals to the first demultiplexer 630 and activate the third PLC function 610 and transmit data information to the downstream terminal 140; the second supervisory controller 620 is further configured to receive feedback data of the downstream terminal 140 through the third PLC functional module 610; the second supervisory controller 620 is further configured to perform general internal management tasks, configuration control of the downstream terminal 140, periodic built-in testing, and the like; the first demultiplexer 630 is configured to select a corresponding downstream terminal 140 channel according to the channel selection discrete signal; the third PLC modem 611 is for processing a PLC signal; the third power line coupler 612 is used to decouple or couple PLC signals.

Wherein the control instructions include, but are not limited to: letting SSPC engine 111 control the switching state of SSSD 112; feedback information includes, but is not limited to: the current switching state of the SSSD 112, the voltage value, the current value, the temperature value, etc. of the feeder 120 where the SSSD 112 is located; feedback data includes, but is not limited to: voltage value, current value, temperature value, etc. of the downstream terminal 140.

Wherein, processing the PLC signal includes: the PLC signal is parsed into data information and transmitted to the second supervisory controller 620, and the data information transmitted from the second supervisory controller 620 is generated into the PLC signal.

Wherein decoupling or coupling comprises: the PLC signal generated by the third PLC modem 611 is coupled to the feeder line 120 for transmission to the downstream terminal 140, and the PLC signal transmitted by the downstream terminal 140 is decoupled from the feeder line 120 for resolution by the first PLC modem 611.

With continued reference to fig. 6, the power line communication circuit further includes: a third terminal of the first demultiplexer 630 is connected to an input terminal of the feeder line 120.

In this embodiment, a channel that a third end of the first demultiplexer 630 is connected to the input end of the feeder line 120 is set as a default channel, and the first demultiplexer 630 is further configured to select the default channel according to the channel selection discrete signal selection; the second supervisory controller 620 is further configured to communicate with the external interface terminal through the third PLC function module 610.

Wherein, the communication with the external interface terminal is realized, including: the third PLC function module 610 is activated and transmits data information to the external interface terminal, and receives data information of the external interface terminal through the third PLC function module 610.

Wherein decoupling or coupling further comprises: the PLC signal generated by the third PLC modem 611 is coupled to the feeder line 120 to be transmitted to the external interface terminal, and the PLC signal transmitted from the external interface terminal is decoupled from the feeder line 120 to be parsed by the third PLC modem 611.

In one possible implementation manner, referring to fig. 7, based on the structural diagram shown in fig. 6, another implementation flow diagram of a power line communication circuit based on a solid state power controller in an embodiment of the present application is shown, where another implementation includes:

710: the second supervisory controller receives data information of the external interface terminal through an external serial data bus or a third PLC functional module.

When the second supervisory controller in step 710 receives data information through the external serial data bus, it detects that the external serial data bus fails, the external interface terminal generates a PLC signal from the external interface terminal, the external interface terminal receives the PLC signal from the power input by coupling the PLC signal to the feeder line, the PLC signal is transmitted from the power input to the downstream terminal and is transmitted from the power input to the second PLC functional module, the CFB/FL functional module prevents the PLC signal from being transmitted from the power input to the downstream terminal, the first demultiplexer receives the PLC signal from the feeder line, if the first demultiplexer is not the default channel (the default channel when first execution), the second supervisory controller transmits the channel selection discrete signal to the first demultiplexer, the second PLC functional module decouples the PLC signal from the first demultiplexer and parses the PLC signal into data information according to the PLC signal, and the second supervisory controller receives the data information.

720: the second supervisory controller generates new data information and channel selection discrete signals according to the data information and sends the new data information and channel selection discrete signals to the third PLC functional module and the first demultiplexer.

The second supervisory controller in step 720 may further generate a control command according to the data information and send the control command to the SSPC engine, where the SSPC engine controls the on-off state of the SSSD according to the control command requirement.

730: the third PLC functional module generates a PLC signal according to the data information and is coupled to the first demultiplexer.

740: the first demultiplexer selects a corresponding channel according to the channel selection discrete signal and transmits the PLC signal onto the feed line.

750: the PLC signals are fed around the feeder.

Wherein the PLC signal of step 750 is delivered to the SSSD by the downstream terminal and delivered to the downstream terminal by the SSSD on the feeder.

760: the CFB/FL function blocks prevent the PLC signal on the feeder from being routed through the CFB/FL function block.

Wherein, in step 760, if the channel of step 740 is not the default channel, the CFB/FL function module prevents the PLC signal from being transmitted from the downstream terminal to the SSSD; if the channel of step 940 is the default channel, the CFB/FL function block prevents the PLC signal from being delivered by the SSSD to the downstream terminal.

770: the downstream terminal decouples the PLC signal from the feeder.

In step 770, if the channel in step 740 is not the default channel, the downstream terminal decouples the PLC signal from the feeder; if the channel of step 740 is the default channel, the external interface terminal decouples the PLC signal from the feeder.

In another possible implementation manner, based on the structural diagram shown in fig. 6, please refer to fig. 8, which is a schematic diagram of another execution flow of the power line communication circuit based on the solid state power controller in the embodiment of the present application, another execution includes:

810: the downstream terminal couples the PLC signal to the feeder.

Wherein the downstream terminal of step 810 couples the PLC signal to the feeder line based on performing steps 710 through 770 at least once.

820: the PLC signals are fed around the feeder.

Wherein the PLC signal of step 820 is delivered to the SSSD by the downstream terminal and delivered to the downstream terminal by the SSSD on the feeder.

830: the CFB/FL function blocks prevent the PLC signal on the feeder from being routed through the CFB/FL function block.

Wherein the CFB/FL function module of step 830 prevents the PLC signal from being delivered by the downstream terminal to the SSSD.

840: the first demultiplexer receives the PLC signal from the feeder line and transmits it to the third PLC function module.

850: the third PLC functional module decouples the PLC signals from the first demultiplexer, analyzes the signals into data information and sends the data information to the second supervisory controller.

860: the second supervisory controller generates new data information according to the data information and sends the new data information to the external interface terminal, generates new data information and sends the new data information to the third PLC functional module or generates a control instruction and sends the control instruction to the SSPC engine.

Wherein, the second supervisory controller in step 860 generates new data information to the external interface terminal according to the data information includes: the data information can be sent to the external interface terminal through an external data bus; the first supervisory controller sends the channel selection discrete signal to the first demultiplexer, the third PLC functional module generates a PLC signal from the new data information and couples the PLC signal to the first demultiplexer, the first demultiplexer selects a default channel according to the channel selection discrete signal and sends the received PLC signal to a feeder line, and the PLC signal is sent to the external interface terminal from a power input through the feeder line; the data information can be sent to the external interface terminal through the external data bus, the external serial data bus is detected to be in fault, and the data information is sent to the external interface terminal through the third PLC functional module again; the second supervisory controller may also do nothing according to the data information.

The second supervisory controller in step 860 generates new data information according to the data information and sends the new data information to the third PLC functional module, which may execute steps 720 to 770.

The second supervisory controller in step 860 generates a control command according to the data information and sends the control command to the SSPC engine, and the SSPC engine can control the on-off state of the SSSD according to the control command.

In the embodiment of the present application, by setting the CFB/FL function module 113 on the feeder line 120 in the SSPC function module 110, PLC signals between the third PLC function module 610 and the downstream terminal 140 and the external interface terminal are transmitted in a predetermined direction, which effectively solves the specific communication requirement of the aircraft interconnectivity, and the uncertainty signal attenuation of the third PLC function module 610 and other PLC function modules in the coupling or decoupling process, the noise introduction of other various signal sources in the uncertainty feeder line network, and the like.

Referring to fig. 9, another schematic structural diagram of a power line communication circuit based on a solid state power controller according to an embodiment of the present application, on the basis of fig. 1, the power line communication circuit further includes: a fourth PLC function module 910, a third supervisory controller 920, a second demultiplexer 930, and a DCSI 940.

Wherein the DCSI is a digital channel selection interface (Digital Channel Selection Interface, DCSI).

Wherein the fourth PLC function module 910 includes: a fourth PLC modem 921, a fourth power line coupler 922.

Wherein one end of the fourth PLC modem 921 is connected to one end of the fourth power line coupler 922, the first end of the third supervisory controller 920 is connected to the external serial data bus 330, the second end of the third supervisory controller 920 is connected to the SSPC internal serial data bus 340, the SSPC internal serial data bus 340 is connected to the fourth end of the SSPC engine 111, the SSPC internal serial data bus 340 is connected to the other end of the fourth PLC modem 921, the SSPC internal serial data bus 340 is connected to one end of the DCSI 940, the other end of the DCSI 940 is connected to the first end of the second demultiplexer 930, the second end of the second demultiplexer 930 is connected to the other end of the fourth power line coupler 922, the second demultiplexer 930 has a plurality of third ends, and one third end of the second demultiplexer 930 is connected to the second end of one CFB/FL function module 113.

In the embodiment of the present application, the third supervisory controller 910 is configured to send control instructions to the SSPC engine 111 and receive feedback information from the SSPC engine 111 through the SSPC internal serial data bus 340; the SSPC engine 111 is further configured to start the fourth PLC function module 921 and transmit data information to the downstream terminal 140; the SSPC engine 111 is further configured to receive feedback data of the downstream terminal 140 through the fourth PLC function module 920; the SSPC engine 111 is also configured to transmit a channel selection discrete signal; the third supervisory controller 910 is further configured to perform a general internal management task, configuration control of the downstream terminal 140, periodic built-in testing, and the like; connector DCSI 940 is used to receive channel selection discrete signals; the second demultiplexer 930 is configured to select a corresponding channel of the downstream terminal 140 according to the channel selection discrete signal; the fourth PLC modem 921 is for processing a PLC signal; the fourth power line coupler 922 is used to decouple or couple PLC signals.

Wherein the control instructions include, but are not limited to: letting the SSPC engine 111 control the on-off state of the SSSD 112, letting the SSPC engine 111 start the first PLC function module and transmit data information, letting the SSPC engine 111 receive feedback data of the downstream terminal 140 through the fourth PLC function module 920; feedback information includes, but is not limited to: the current switching state of the SSSD 112, the voltage value, the current value, the temperature value, etc. of the feeder 120 where the SSSD 112 is located, the voltage value, the current value, the temperature value, etc. of the downstream terminal 140; feedback data includes, but is not limited to: voltage value, current value, temperature value, etc. of the downstream terminal 140.

Wherein decoupling or coupling comprises: the PLC signal generated by the fourth PLC modem 921 is coupled to the feeder line 120 for transmission to the downstream terminal 140, and the PLC signal transmitted from the downstream terminal 140 is decoupled from the feeder line 120 for analysis by the fourth PLC modem 921.

With continued reference to fig. 9, the power line communication circuit further includes: a third terminal of the second demultiplexer 930 is connected to an input terminal of the feeder line 120.

In the embodiment of the present application, a third terminal of the second demultiplexer 930 is connected to the input terminal of the feeder line 120 and is set as a default channel, and the second demultiplexer 930 is further configured to select the default channel according to the channel selection discrete signal; the third supervisory controller 910 is further configured to implement communication with an external interface terminal through a fourth PLC function module 920; the fourth PLC function module 920 may also be used to implement a first backup mechanism with an external interface terminal through a default channel; the SSPC engine 111 is also used as a second backup mechanism for implementing an external interface terminal.

Wherein decoupling or coupling further comprises: the PLC signal generated by the fourth PLC modem 921 is coupled to the feeder line 120 to be transmitted to the external interface terminal, and the PLC signal transmitted from the external interface terminal is decoupled from the feeder line 120 to be parsed by the fourth PLC modem 921.

Wherein the first backup mechanism comprises: in the path of the external serial data bus 330 transmitting data information to the third supervisory controller 910, the data information may still be transmitted from the feeder 120 of the power input 130 to the SSPC engine 111 through the second demultiplexer 930 and the fourth PLC function 920 in the event of any failure.

Wherein the second backup mechanism comprises: the external serial data bus 330 transmits data information to the third supervisory controller 910. The third supervisory controller 910 transmits control instructions to the SSPC engine 111 in the path of any failure, the data information can still be transmitted from the feeder 120 of the power input 130 to the SSPC engine through the second demultiplexer and the fourth PLC function module.

In one possible implementation manner, referring to fig. 10, based on the structural diagram shown in fig. 9, another implementation flow diagram of a power line communication circuit based on a solid state power controller in an embodiment of the present application is shown, where another implementation includes:

1010: the third supervisory controller receives data information of the external interface terminal through an external serial data bus or a fourth PLC functional module.

When the third supervisory controller in step 1010 receives the data information through the external serial data bus, it detects that the external serial data bus is faulty, the external interface terminal generates a PLC signal from the power input by coupling the PLC signal to the feeder line, the PLC signal is transmitted from the power input to the downstream terminal and is transmitted from the power input to the fourth PLC functional module, the CFB/FL functional module prevents the PLC signal from being transmitted from the power input to the downstream terminal, if the second demultiplexer is not the default channel (first execution is the default channel), the SSPC engine transmits a channel selection discrete signal to the DCSI, the second demultiplexer receives the channel selection discrete signal through the DCSI and selects the default channel, the second demultiplexer receives the PLC signal from the feeder line, the fourth PLC functional module decouples the PLC signal from the second demultiplexer and parses the data information according to the PLC signal, and the third supervisory controller receives the data information.

When the third supervisory controller in step 1010 receives the data information through the external serial data bus, it is detected that the third supervisory controller fails, the external interface terminal generates a PLC signal from the power input by coupling the PLC signal to the feeder line, the PLC signal is transmitted from the power input to the downstream terminal and is transmitted from the power input to the fourth PLC functional module, the CFB/FL functional module prevents the PLC signal from being transmitted from the power input to the downstream terminal, if the second demultiplexer is not a default channel (first execution is a default channel), the SSPC engine transmits a channel selection discrete signal to the DCSI, the second demultiplexer receives the channel selection discrete signal through the DCSI and selects the default channel, the second demultiplexer receives the PLC signal from the feeder line, the fourth PLC functional module decouples the PLC signal from the second demultiplexer and parses the PLC signal into the data information according to the PLC signal, and the SSPC engine receives the data information.

1020: and the third supervisory controller generates a new control instruction according to the data information and sends the new control instruction to the SSPC engine.

Wherein, the SSPC engine of step 1020 can further control the switch state of the SSSD according to the control command; if the supervisory controller fails, step 1010 and step 1020 are not performed, and at this time, the SSPC engine has a part of functions of the third supervisory controller, and can obtain a communication function with the external interface terminal and the downstream terminal through the fourth PLC function module.

1030: the SSPC engine generates data information and channel selection discrete signals according to the control instruction and sends the data information and the channel selection discrete signals to the fourth functional module and the second demultiplexer.

The SSPC engine in step 1030 generates data information and channel selection discrete signals according to the control command, and sends the data information and channel selection discrete signals to the fourth functional module and the second demultiplexer, and then directly sends feedback information to the third supervisory controller.

Wherein, the channel selection discrete signal in step 1030 sends DCSI, which sends the channel selection discrete signal to the second demultiplexer;

1040: the fourth PLC functional module generates a PLC signal according to the data information and is coupled to the second demultiplexer.

1050: the second demultiplexer selects a corresponding channel according to the channel selection discrete signal and transmits the PLC signal onto the feed line.

1060: the PLC signals are fed around the feeder.

Wherein the PLC signal of step 1060 is delivered to the SSSD by the downstream terminal and delivered to the downstream terminal by the SSSD on the feeder.

1070: the CFB/FL function blocks prevent the PLC signal on the feeder from being routed through the CFB/FL function block.

Wherein, in step 1070, if the channel of step 1050 is not the default channel, the CFB/FL function module prevents the PLC signal from being transmitted from the downstream terminal to the SSSD; if the channel of step 1050 is the default channel, the CFB/FL function block the PLC signal from being delivered by the SSSD to the downstream terminal.

1080: the downstream terminal decouples the PLC signal from the feeder.

In step 1080, if the channel in step 1050 is not the default channel, the downstream terminal decouples the PLC signal from the feeder; if the channel of step 1050 is the default channel, the external interface terminal decouples the PLC signal from the feeder.

In another possible implementation manner, referring to fig. 11, based on the structural diagram shown in fig. 9, another implementation flow diagram of a power line communication circuit based on a solid state power controller in an embodiment of the present application is shown, where another implementation includes:

1110: the downstream terminal couples the PLC signal to the feeder.

Wherein the downstream terminal of step 1110 couples the PLC signal to the feeder line based on performing steps 1010 through 1080 at least once.

1120: the PLC signals are fed around the feeder.

Wherein the PLC signal of step 1120 is delivered to the SSSD by the downstream terminal and delivered to the downstream terminal by the SSSD on the feeder.

1130: the CFB/FL function blocks prevent the PLC signal on the feeder from being routed through the CFB/FL function block.

Wherein the CFB/FL function module of step 1130 prevents the PLC signal on the feeder line from being delivered by the downstream terminal to the SSSD.

1140: the second demultiplexer receives the PLC signal from the feeder line and transmits it to the fourth PLC function module.

The second demultiplexer in step 1140 receives the channel selection discrete signal sent by the SSPC engine through the DCSI in advance, and selects the corresponding channel.

1150: the fourth PLC functional module decouples the PLC signals from the second demultiplexer, analyzes the signals into data information and sends the data information to the SSPC engine.

1160: the SSPC engine generates feedback information from the data information.

In step 1160, if the third supervisory controller is detected to be faulty, the SSPC engine may feed back information to the external interface terminal through the fourth PLC function module, and the SSPC engine may perform control operation according to the data information, and may not perform any operation according to the data information.

1170: and the third supervision controller generates data information according to the feedback information and sends the data information to the external interface terminal or generates a control instruction and sends the control instruction to the SSPC engine.

If the third supervisory controller fails, step 1170 is not performed; the third supervisory controller of step 1170 generating new data information to the external interface terminal based on the data information comprises: the data information can be sent to the external interface terminal through the external serial data bus; the data information can also be sent to the external interface terminal through the fourth PLC functional module.

Wherein, the second supervisory controller of step 1170 generates a control command according to the data information and sends the control command to the SSPC engine, and steps 1020 to 1080 can be executed.

In the embodiment of the present application, by setting the CFB/FL function module 113 on the feeder line 120 in the SSPC function module 110, PLC signals between the fourth PLC function module 920 and the downstream terminal 140 and the external interface terminal are transmitted in a predetermined direction, which effectively solves the specific communication requirement of the aircraft interconnectivity, and the uncertainty signal attenuation of the fourth PLC function module 920 and other PLC function modules in the coupling or decoupling process, the noise introduction of other various signal sources in the uncertainty feeder line network, and the like.

Referring to fig. 12, a schematic structure of a power line communication system based on a solid state power controller in an embodiment of the present application, where the power line communication system includes: a PDP 1210, a plurality of SPDB 1220;

wherein the SPDB 1220 includes: multiple SSPCs PBA/LRM 1230, SSPCs PBA/LRM 1230 is a structure in any one of the above embodiments of the solid state power controller based power line communication circuit, PDP 1210 has multiple first terminals, and one first terminal of PDP 1210 is connected to one or more SSPCs PBA/LRM 1230.

In the present embodiment, it is understood that PDP 1210, SPDB 1220, SSPC PBA/LRM1230 are all prior art.

Wherein the PDP is a main switchboard (Power Distribution Panel, PDP), the SPDB is a secondary distribution box (Secondary Power Distribution Box, SPDB), and the PBA/LRM is a printed circuit board assembly or a line replaceable module (Printed Board Assembly/Line Replaceable Module, PBA/LRM).

Referring to fig. 13, a schematic diagram of a downstream terminal structure of a power line communication system based on a solid state power controller according to an embodiment of the present application further includes: a plurality of downstream terminals 140.

Wherein the downstream terminal 140 includes: a fifth PLC function module 1310, a load 1320;

wherein the fifth PLC function module 1310 includes: a fifth PLC modem 1311, a fifth power line coupler 1312, wherein one end of the fifth PLC modem 1311 is connected to one end of the fifth power line coupler 1312, a first end of a load 1320 is connected to the other end of the fifth power line coupler 1312, a second end of the load 1320 is connected to the feeder line 120 to which the fifth PLC modem 1311 is connected, and the SSPC function module 110 of the SSPC PBA/LRM1230 is connected to the second end of the load 1320.

In the embodiment of the present application, the fifth PLC modem 1311 is used to process PLC signals; fifth power line coupler 1312 is used to decouple or couple PLC signals.

Wherein, processing the PLC signal includes: the PLC signal is parsed into data information and transmitted to the load 1320, and the data information transmitted from the load 1320 is generated into the PLC signal.

Wherein decoupling or coupling comprises: the PLC signal generated by the fifth PLC modem 1311 is coupled to the feeder line 120 for transmission to the downstream terminal 140, and the PLC signal transmitted by the downstream terminal 140 is decoupled from the feeder line 120 for resolution by the fifth PLC modem 1311.

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 above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A power line communication circuit based on a solid state power controller, the power line communication circuit comprising:

the CFB/FL function module is used for preventing the PLC signal with the appointed carrier frequency on the feeder line from being transmitted through the CFB/FL function module, and the current used for fusing the overheat on the feeder line is transmitted through the CFB/FL function module.

2. The power line communication circuit of claim 1, wherein the SSPC function module further comprises: a first PLC functional module;

3. The power line communication circuit of claim 2, further comprising: a first supervisory controller;

4. The power line communication circuit of claim 3, further comprising: a second PLC functional module;

5. The power line communication circuit of claim 1, further comprising: the third PLC functional module, the second supervision controller and the first demultiplexer;

6. The power line communication circuit of claim 5, further comprising: a third terminal of the first demultiplexer is connected to the input terminal of the feeder line.

7. The power line communication circuit of claim 1, further comprising: the system comprises a fourth PLC functional module, a third supervision controller, a second demultiplexer and a connector DCSI;

8. The power line communication circuit of claim 7, further comprising: a third terminal of the second demultiplexer is connected to the input terminal of the feeder line.

9. A power line communication system based on a solid state power controller, the power line communication system comprising: a main switchboard PDP, a plurality of secondary distribution boxes SPDBs;

the SPDB includes: a plurality of solid state power controller printed circuit board assemblies or line replaceable modules SSPC PBA/LRMs, said SSPC PBA/LRMs being the solid state power controller based power line communications circuit of any one of claims 1 to 8;

10. The power line communication system according to claim 9, characterized in that the power line communication system further comprises: a plurality of downstream terminals;

the downstream terminal includes: a fifth PLC function module, a load;