阅读说明：本技术 电力线通信处理电路及其操作方法和通信系统 (Power line communication processing circuit, operation method thereof and communication system ) 是由 陈志� 许宁 于 2020-06-02 设计创作，主要内容包括：本公开的实施例涉及一种电力线通信处理电路及其操作方法。该电力线通信处理电路包括：载波信号处理单元,被配置为在接收状态下接收电力载波输入信号并将其转换成输入网络信号,以及在发送状态下接收输出网络信号并将其转换成电力载波输出信号；网络传输处理单元,被配置为在接收状态下接收输入网络信号并将其转换成输出数字信号,以及在发送状态下接收输入数字信号并将其转换成输出网络信号；以及信号转换单元,被配置为在接收状态下接收输出数字信号并将其转换成输出信号,以及在发送状态下接收输入信号并将其转换成输入数字信号。在此描述的电力线通信处理电路实现了可视对讲系统的低成本安装,增加了通信的带宽,减少了器件损坏的概率。(Embodiments of the present disclosure relate to a power line communication processing circuit and an operating method thereof. The power line communication processing circuit includes: a carrier signal processing unit configured to receive a power carrier input signal and convert it into an input network signal in a receiving state and to receive an output network signal and convert it into a power carrier output signal in a transmitting state; a network transmission processing unit configured to receive an input network signal and convert it into an output digital signal in a reception state, and to receive an input digital signal and convert it into an output network signal in a transmission state; and a signal conversion unit configured to receive the output digital signal and convert it into an output signal in a reception state, and to receive the input signal and convert it into an input digital signal in a transmission state. The power line communication processing circuit described herein enables low-cost installation of the video intercom system, increases the bandwidth of communication, and reduces the probability of device damage.)

1. A power line communication processing circuit, comprising:

a carrier signal processing unit (101) configured to receive a power carrier input signal and convert the power carrier input signal into an input network signal conforming to a network transmission protocol in a receiving state, and to receive an output network signal conforming to the network transmission protocol and convert the output network signal conforming to the network transmission protocol into a power carrier output signal in a transmitting state;

a network transmission processing unit (102) configured to receive the input network signal complying with the network transmission protocol and to convert the input network signal complying with the network transmission protocol into an output digital signal in the receiving state, and to receive the input digital signal and to convert the input digital signal into the output network signal complying with the network transmission protocol in the transmitting state; and

a signal conversion unit (103) configured to receive the output digital signal and convert the output digital signal into the output signal in the reception state, and to receive the input signal and convert the input signal into the input digital signal in the transmission state.

2. The power line communication processing circuit of claim 1, wherein the network transport protocol is a TCP/IP protocol.

3. The power-line communication processing circuit according to claim 1, wherein the carrier signal processing unit (101) and the network transmission processing unit (102) are connected by a network cable.

4. The power line communication processing circuit according to claim 1, wherein the signal conversion unit (103) is an audio conversion unit or a video conversion unit, and the output signal and the input signal are an audio signal or a video signal.

5. The power-line communication processing circuit according to claim 1, wherein the carrier signal processing unit (101), the network transmission processing unit (102), and the signal conversion unit (103) are different functional units within the power-line communication circuit.

6. The power-line communication processing circuit of claim 1, further comprising:

a power supply (104) configured to be connected to a power line in a non-polar manner and to supply power in the power carrier input signal to the carrier signal processing unit (101), the network transmission processing unit (102), and the signal conversion unit (103).

7. The power-line communication processing circuit according to claim 6, wherein the power supply (104) includes rectifier bridge circuits, inputs of which are connected to the power lines, respectively, and outputs of which are connected to power supply inputs of the carrier signal processing unit (101), the network transmission processing unit (102), and the signal conversion unit (103).

8. A communication system, comprising:

power line communication processing circuit (1) according to claims 1-7;

a power line (4) configured to transmit a power carrier signal, an

A direct current power supply (3) configured to supply power to the power line communication processing circuit (1).

9. A method of operation of a power line communication processing circuit, comprising:

determining a state of the power line communication processing circuit;

if it is determined that the power line communication processing circuit is in the reception state,

performing a conversion process on a power carrier input signal received from a power line to generate an input network signal conforming to a network transmission protocol;

performing conversion processing on the input network signal conforming to the network transmission protocol to generate an output digital signal; and

performing conversion processing on the output digital signal to generate an output signal; and

if it is determined that the power line communication processing circuit is in a transmission state,

performing a conversion process on the received input signal to generate an input digital signal;

performing a conversion process on the input digital signal to generate an output network signal conforming to a network transmission protocol; and

and performing conversion processing on the output network signal conforming to the network transmission protocol to generate a power carrier output signal.

10. The method of operation of claim 9, wherein the network transport protocol is a TCP/IP protocol.

Technical Field

Embodiments of the present disclosure generally relate to a power line communication processing circuit, an operating method thereof, and a communication system, and more particularly, to a direct current power line communication processing circuit, an operating method thereof, and a communication system.

Background

At present, with the increase of the requirement on safety, the visual intercom system is more and more emphasized. When old district is reformed transform, lay the required circuit cost of visual intercom system again very high and be difficult to realize. Meanwhile, the existing visual intercom system mostly uses analog signals, the communication bandwidth is low, and the application range of the visual intercom system is limited. In addition, because the power supply of the video intercom system is usually a direct current power supply, when the video intercom system is installed, the positive electrode and the negative electrode of the power supply are connected reversely, and the devices are easily damaged.

Disclosure of Invention

The embodiment of the disclosure provides a power line communication processing circuit and an operation method thereof, which can realize the installation of a visual intercom system without large-scale reconstruction of old and old cells, increase the communication bandwidth, expand the application range of the visual intercom system, realize the connection of the visual intercom system in a nonpolar way and reduce the probability of device damage.

In a first aspect of the present disclosure, a power line communication processing circuit is provided. The power line communication processing circuit includes: a carrier signal processing unit configured to receive a power carrier input signal and convert the power carrier input signal into an input network signal conforming to a network transmission protocol in a receiving state, and to receive an output network signal conforming to the network transmission protocol and convert the output network signal conforming to the network transmission protocol into a power carrier output signal in a transmitting state; a network transmission processing unit configured to receive an input network signal conforming to a network transmission protocol and convert the input network signal conforming to the network transmission protocol into an output digital signal in a receiving state, and to receive the input digital signal and convert the input digital signal into an output network signal conforming to the network transmission protocol in a transmitting state; and a signal conversion unit configured to receive the output digital signal and convert the output digital signal into an output signal in a reception state, and to receive the input signal and convert the input signal into an input digital signal in a transmission state.

In one embodiment, the network transport protocol is the TCP/IP protocol.

In one embodiment, the carrier signal processing unit and the network transmission processing unit are connected by a network cable.

In one embodiment, the signal conversion unit is an audio conversion unit or a video conversion unit, and the output signal and the input signal are audio signals or video signals.

In one embodiment, the carrier signal processing unit, the network transmission processing unit and the signal conversion unit are different functional units within the power line communication circuit.

In one embodiment, the power line communication processing circuit further includes: a power supply configured to be connected to the power line in a non-polar manner and to supply power in the power carrier input signal to the carrier signal processing unit, the network transmission processing unit, and the signal conversion unit.

In one embodiment, the power supply includes rectifier bridge circuits, inputs of the rectifier bridge circuits are respectively connected to the power lines, and outputs of the rectifier bridge circuits are connected to power supply inputs of the carrier signal processing unit, the network transmission processing unit, and the signal conversion unit.

In a second aspect of the disclosure, a communication system is provided. The communication system includes: the power line communication processing circuit in the foregoing embodiment; the power line communication processing circuit includes a power line configured to transmit a power carrier signal, and a direct current power supply configured to supply power to the power line communication processing circuit.

In a third aspect of the disclosure, a method of operation of a power line communication processing circuit is provided. The method comprises the following steps: determining a state of a power line communication processing circuit; if the power line communication processing circuit is determined to be in the receiving state, performing conversion processing on a power carrier input signal received from the power line to generate an input network signal conforming to a network transmission protocol; performing a conversion process on an input network signal conforming to a network transmission protocol to generate an output digital signal; and performing conversion processing on the output digital signal to generate an output signal; and if it is determined that the power line communication processing circuit is in the transmission state, performing conversion processing on the received input signal to generate an input digital signal; performing a conversion process on the input digital signal to generate an output network signal conforming to a network transmission protocol; and performing a conversion process on the output network signal conforming to the network transport protocol to generate a power carrier output signal.

In one embodiment, the network transport protocol is the TCP/IP protocol.

Drawings

The above and other objects, features and advantages of the embodiments of the present disclosure will become more readily understood through the following detailed description with reference to the accompanying drawings. Various embodiments of the present disclosure will be described by way of example and not limitation in the accompanying drawings, in which:

fig. 1 shows a circuit block diagram of a power line communication processing circuit according to an embodiment of the present disclosure;

fig. 2 shows a circuit block diagram of another power line communication processing circuit with a non-polar power supply according to an embodiment of the present disclosure;

FIG. 3 shows a circuit diagram of a non-polar power supply according to an embodiment of the present disclosure;

FIG. 4 shows a power line communication visual intercom system diagram, in accordance with embodiments of the present disclosure;

fig. 5 shows a flow chart of a method of operation of a power line communication processing circuit according to an embodiment of the present disclosure.

Detailed Description

The principles of the present disclosure will now be described with reference to various exemplary embodiments shown in the drawings. It should be understood that these examples are described merely to enable those skilled in the art to better understand and further implement the present disclosure, and are not intended to limit the scope of the present disclosure in any way. It should be noted that where feasible, similar or identical reference numerals may be used in the figures and that similar or identical reference numerals may indicate similar or identical functions. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the embodiments of the disclosure described herein.

The structure of a power line communication processing circuit according to an example embodiment of the present disclosure will be described in detail below with reference to fig. 1 to 3. Referring first to fig. 1, fig. 1 shows a circuit block diagram of a power line communication processing circuit according to an embodiment of the present disclosure.

In the embodiment shown in fig. 1, the power line communication processing circuit 1 is adapted to convert a power carrier input signal into an output signal in a receiving state and to convert an input signal into a power carrier output signal in a transmitting state.

In general, the power line communication processing circuit 1 includes: a carrier signal processing unit 101, a network transmission processing unit 102, and a signal conversion unit 103.

As shown in fig. 1, the carrier signal processing unit 101 is connected to the network transmission processing unit 102, and is configured to realize conversion between a power carrier signal and a network signal. In the receiving state, the carrier signal processing unit 101 receives a power carrier input signal from the power line and converts the power carrier input signal into an input network signal conforming to a network transmission protocol. In the transmitting state, the carrier signal processing unit 101 receives an output network signal conforming to the network transmission protocol and converts the output network signal conforming to the network transmission protocol into a power carrier output signal.

In some embodiments, the carrier signal processing unit 101 may, for example, receive a PLC signal from a power line and convert the PLC signal into an input network signal conforming to a network transmission protocol, and may receive an output network signal conforming to the network transmission protocol and convert the output network signal conforming to the network transmission protocol into a PLC signal to output to the power line.

Alternatively, in other embodiments, the carrier signal processing unit 101 may, for example, implement conversion between a network signal conforming to a network transmission protocol and other types of power carrier signals, which may be determined according to the type of power carrier signal.

In some embodiments, the carrier signal processing unit 101 and the network transmission processing unit 102 are connected by a network cable. Alternatively, in other embodiments, the carrier signal processing unit 101 and the network transmission processing unit 102 may be connected in other ways, which may be determined according to specific circuit design requirements and cost.

As shown in fig. 1, the network transmission processing unit 102 is connected to the carrier signal processing unit 101 and the signal conversion unit 103, and is configured to realize conversion between a network signal and a digital signal. In the receiving state, the network transmission processing unit 102 receives an input network signal conforming to the network transmission protocol and converts the input network signal conforming to the network transmission protocol into an output digital signal. In the transmitting state, the network transmission processing unit 102 receives an input digital signal and converts the input digital signal into an output network signal conforming to a network transmission protocol.

In some embodiments, the network transmission processing unit 102 may include, for example, a codec module unit that enables conversion between network signals and digital signals. In some embodiments, the network transport processing unit 102 may, for example, decode an input network signal conforming to the TCP/IP protocol into an output digital signal in the receive state and encode the input digital signal into an output network signal conforming to the TCP/IP protocol in the transmit state.

Alternatively, in other embodiments, the network transmission processing unit 102 may implement, for example, conversion between other types of network signals and digital signals, which may be determined according to the type of network transmission protocol.

Compared with the existing communication mode of directly transmitting the power carrier signal, the communication bandwidth is increased by converting the power carrier signal into the network signal, so that the application range of the visual intercom system is expanded.

As shown in fig. 1, the signal conversion unit 103 is connected to the network transmission processing unit 102, and is configured to realize conversion between a digital signal and an input/output signal. In the receiving state, the signal conversion unit 103 receives the output digital signal and converts the output digital signal into an output signal. In the transmitting state, the signal conversion unit 103 receives an input signal and converts the input signal into an input digital signal. In some embodiments, the signal conversion unit 103 may be, for example, an audio conversion unit configured to enable conversion between a digital signal and an audio signal. In some embodiments, the signal conversion unit 103 may be, for example, a video conversion unit configured to enable conversion between a digital signal and a video signal. Alternatively, in other embodiments, the signal conversion unit 103 may, for example, implement conversion between other types of signals and digital signals, which may be determined according to the application of the power line communication processing circuit.

By converting analog signals into digital signals for transmission, various data from sound, video and other data sources can be unified into a digital signal form, the data is transmitted by a digital communication system by taking a data frame as a unit, and communication errors are found and corrected by error detection coding and data frame retransmission, so that the reliability of communication is effectively ensured. Meanwhile, in long-distance digital communication, the integrity of the digital signal can be ensured by amplifying and shaping the digital signal through a repeater, and noise is not accumulated. The security of communication can be effectively enhanced by using encryption technology. In addition, digital devices are easily implemented in integrated circuits and are cost effective to integrate with computers.

In some embodiments, in order to increase the integration of the circuit, the carrier signal processing unit 101, the network transmission processing unit 102, and the signal conversion unit 103 may be implemented as different functional units within the power line communication circuit, for example. Alternatively, in other embodiments, the carrier signal processing unit 101, the network transmission processing unit 102, and the signal conversion unit 103 may be implemented as separate circuits, for example, which may be determined according to specific circuit design requirements and cost.

In the above embodiment, the audio/video signals are encoded into the IP data packets and then converted into the power line carrier signals for communication, so that the transmission of the audio/video signals in the power line is realized, the visual intercom system can be realized without specially setting a communication line for the visual intercom system, and the cost of realizing the visual intercom system is reduced.

Fig. 2 shows a circuit block diagram of another power line communication processing circuit with a non-polar power supply according to an embodiment of the present disclosure.

In the embodiment shown in fig. 2, the power line communication processing circuit 1 further includes a power supply 104 configured to be connected to the power line in a non-polar manner and to supply power in the power carrier input signal to the carrier signal processing unit 101, the network transmission processing unit 102, and the signal conversion unit 103.

In some embodiments, to increase the integration of the circuit, the power supply 104 may be implemented, for example, as a power supply module within a power line communication circuit. Alternatively, in other embodiments, the power supplies 104 may be implemented as separate circuits, for example, which may be determined according to specific circuit design requirements and cost.

In some embodiments, the power supply 104 may be implemented, for example, with a rectifier bridge circuit. Alternatively, in other embodiments, the power supply 104 may be implemented with other types of non-polar power supply circuits, respectively, for example, which may be determined according to specific circuit design requirements and cost.

Fig. 3 shows a circuit diagram of a non-polar power supply according to an embodiment of the present disclosure.

In the embodiment shown in fig. 3, the power supply 104 includes a rectifier bridge and a voltage stabilizing capacitor C1. The rectifier bridge comprises four diodes D1-D4, the anode of the diode D1 and the cathode of the diode D3 are connected together as a first input of the rectifier bridge, the anode of the diode D2 and the cathode of the diode D4 are connected together as a second input of the rectifier bridge, the cathode of the diode D1 and the cathode of the diode D2 are connected together as a positive output of the rectifier bridge, and the cathode of the diode D3 and the anode of the diode D4 are connected together as a negative output of the rectifier bridge. A voltage stabilizing capacitor C1 is connected between the positive and negative outputs of the rectifier bridge to provide a voltage stabilization. In some embodiments, the power supply 104 may be comprised of transistors, for example, which may be determined based on specific circuit design requirements and cost.

In the embodiment shown in fig. 3, when the first input of the rectifier bridge is connected to the positive line of the dc power line and the second input of the rectifier bridge is connected to the negative line of the dc power line, current flows from the first input through D1 to the load and back to the second input through D4. When the first input of the rectifier bridge is connected to the negative line of the dc power line and the second input of the rectifier bridge is connected to the positive line of the dc power line, current flows from the second input through D2 to the load and back through D3 to the first input. In this way, the power source 4 can provide power to the load regardless of the manner in which it is connected to the power line, whereby a non-polar connection of the power source 4 can be achieved.

By connecting the power line communication processing circuit 1 in a non-polar manner, the connection of the anode and the cathode of a power supply is not required to be considered when a communication system is set, so that the use of a user is facilitated, and the damage caused by the fact that the anode and the cathode of the power supply are connected inversely is reduced.

A power line communication visual intercom system according to an example embodiment of the present disclosure will be described in detail below with reference to fig. 4. Fig. 4 shows a circuit structure diagram of the power line communication video intercom system according to the embodiment of the present disclosure.

In the embodiment shown in fig. 4, the communication system 2 is adapted to enable different users to communicate over a power line, and in general, the communication system 2 includes a plurality of power line communication processing circuits 1 respectively belonging to the different users, a power line 4 configured to transmit a power carrier signal, and a direct current power supply 3 configured to supply power to the power line communication processing circuits 1.

In the embodiment shown in fig. 4, a user can input information into the communication system 2 through the power line communication processing circuit 1, the communication system 2 transmits the information to a target user through the power line 4, and the target user extracts the information transmitted in the power line through the power line communication processing circuit 1 to complete communication.

In some embodiments, the user may implement point-to-point communications through the communication system 2. Alternatively, in other embodiments, a user may implement a broadcast or other communication means via communication system 2, which may be determined based on specific circuit design requirements and cost.

A flowchart of an operation method of the power line communication processing circuit according to an embodiment of the present disclosure will be described in detail below with reference to fig. 5. The method 500 may be performed by the power line communication processing circuit 1 described above with reference to fig. 1-3.

At block 505, the state of the power line communication processing circuit 1 is determined. In some embodiments, the power line communication processing circuit 1 determines that the power line communication processing circuit 1 is in the receiving state by monitoring the power carrier input signal received at the carrier signal processing unit 101 from the power line. In some embodiments, the power line communication processing circuit 1 determines that the power line communication processing circuit 1 is in the transmission state by monitoring an input signal received at the signal conversion unit 103 from a user input. Alternatively, in other embodiments, other detection manners may be adopted to determine the state of the power line communication processing circuit 1, which may be determined according to the need of detection.

When it is determined that the power line communication processing circuit 1 is in the receiving state, at block 510, a conversion process is performed on the power carrier input signal received from the power line to generate an input network signal conforming to the network transmission protocol.

In some embodiments, an input network signal conforming to a network transmission protocol may be obtained, for example, by performing a filtering process on a power carrier input signal. Alternatively, in other embodiments, the input network signal may be derived to conform to a network transmission protocol by performing other processing on the power carrier input signal, which may be determined according to specific circuit design requirements and cost.

At block 515, a conversion process is performed on the input network signal conforming to the network transport protocol to generate an output digital signal.

In some embodiments, the output digital signal may be generated, for example, by decoding an input network signal that conforms to the TCP/IP protocol. Alternatively, it is possible to decode an input network signal conforming to other network protocols into an output digital signal, which may be determined according to the type of network transmission protocol.

Through blocks 510 and 515, conversion of the power line signal to the network signal may be achieved, upon which communication efficiency is improved.

At block 520, a conversion process is performed on the output digital signal to generate an output signal.

In some embodiments, for example, the output digital signal may be converted to an audio signal. In some embodiments, the output digital signal may be converted to a video signal, for example. Alternatively, the output digital signal may be converted to other types of signals, which may be determined depending on the context of the power communication application.

By transmitting the audio/video signals in a digital form, communication reliability can be ensured.

When it is determined that the power line communication processing circuit 1 is in the transmission state, at block 525, conversion processing is performed on the received input signal to generate an input digital signal.

In some embodiments, for example, the audio signal may be converted to an input digital signal. In some embodiments, for example, a video signal may be converted to an input digital signal. Alternatively, other types of signals may be converted to input digital signals, which may be determined depending on the context of the power communication application.

By converting the audio/video analog signals into digital form for transmission, the communication speed can be improved.

At block 530, a conversion process is performed on the input digital signal to generate an output network signal that conforms to a network transport protocol.

In some embodiments, the input digital signal may be encoded into an input network signal that conforms to the TCP/IP protocol, for example. Alternatively, the input digital signal may be encoded into an input network signal that conforms to other network protocols, which may be determined according to the type of network transmission protocol.

At block 535, a conversion process is performed on the output network signal conforming to the network transport protocol to generate a power carrier output signal.

In some embodiments, for example, an input network signal conforming to a network transmission protocol may be encoded into a PLC signal to obtain a power carrier input signal suitable for transmission over a power line. Alternatively, in other embodiments, an input network signal conforming to a network transmission protocol may be encoded into other signals to yield a power carrier input signal suitable for transmission over a power line, which may be determined according to specific circuit design requirements and cost.

Through the frame 530 and the frame 535, the conversion from the network signal to the power line signal can be realized, on the basis, the combination of the visual intercom system and the power line carrier communication is realized, and the cost of the visual intercom system is reduced.

According to the embodiment of the disclosure, the user input signal is converted into the power carrier signal, and then the power carrier signal is converted into the network signal for communication, so that the communication cost is reduced, and meanwhile, the communication bandwidth is increased. In addition, by connecting the power line communication processing circuit in a non-polar mode, the connection of the anode and the cathode of a power supply is not required to be considered when a communication system is arranged, so that the use of a user is facilitated, and the damage caused by the fact that the anode and the cathode of the power supply are connected inversely is reduced.

Although claims have been formulated in this application to particular combinations of features, it should be understood that the scope of the disclosure also includes any novel feature or any novel combination of features disclosed herein either explicitly or implicitly or any generalisation thereof, whether or not it relates to the same aspect as presently claimed in any claim. The applicants hereby give notice that new claims may be formulated to such features and/or combinations of such features during the prosecution of the present application or of any further application derived therefrom.