Power line-to-Ethernet hybrid injector, and repeater connected to it for communication.

Abstract

A power line-Ethernet hybrid injector is provided. The power line-Ethernet hybrid injector includes a first power line and a second power line that each transfer power supplies with opposite polarity to each other, a plurality of branch lines branching off from the first power line and the second power line, a first communication line that transfers communication data and is provided in a number corresponding to the plurality of branch lines, a first low-frequency pass filter that allows the power supplies to pass through and blocks the communication data, a first high-frequency pass filter that blocks the power supplies and allows the communication data to pass through, and a plurality of Ethernet power line communication lines that transfer power / communication data which is a combination of the power supplies that have passed through the first low-frequency pass filter and the communication data that have passed through the first high-frequency pass filter.

Description

Technical Field

[0001] The present invention relates to a power line - Ethernet hybrid injector and a repeater communicatively connected thereto. More specifically, the present invention relates to a power line - Ethernet hybrid injector capable of high - power transmission as well as high - speed communication, and a repeater communicatively connected thereto.

Background Art

[0002] The current society requires more and more information and has entered the AI era where AI can search for the necessary information. As a result, the amount of necessary information has increased.

[0003] Here, such information is transmitted by wired communication or wireless communication.

[0004] Although the wireless communication has the advantage of being very convenient to transfer wirelessly in the air, there are problems such as difficulty in transferring information over a long distance and a decrease in speed even when transferred over a long distance. Also, in the case of wireless communication, the communication quality is not uniform depending on the weather conditions, and communication may become impossible when there are obstacles in the middle of the transmission path.

[0005] Although the wired communication has the advantage of a higher communication speed compared to wireless communication, a complex communication environment is composed of many lines. Therefore, in order to solve such problems, a technology for transferring communication and power with one line has been commercialized.

[0006] Typical technologies include power line communication (PLC) and PoE (Power over Ethernet).

Summary of the Invention

Problems to be Solved by the Invention

[0007] The aforementioned power line communication is a technology in which communication is transmitted over two wires. While it has the advantage of being able to transmit a large amount of power, it has the limitation of low communication speed. In other words, the aforementioned power line communication is transmitted using two-wire communication and converted to an Ethernet communication system, but in this case, there is a problem of heat generation.

[0008] Currently, two-wire communication has advanced, and gigabit-class solutions are available, but they are expensive and require a lot of space to convert to Ethernet communication. Furthermore, power line communication suffers from problems such as decreased communication speed and degraded uniformity of communication quality as distance increases.

[0009] In the case of the aforementioned PoE, while the communication speed is fast, there are limitations to low-power transmission. Furthermore, when transferring at high power, the aforementioned PoE uses a DC 50V~57V power supply, so the more power is transmitted, the larger the volume of the AC (100V~240V) / DC (50V~57V) converter becomes, which leads to the problem of increased costs.

[0010] Therefore, there is a need to develop power / communication data transmission technology that combines the advantages of power line communication, namely high-power transmission technology, with the advantages of PoE, namely high-speed communication technology.

[0011] The objective of the present invention is to provide a power line-Ethernet hybrid injector capable of high-power transmission as well as high-speed communication, and a repeater connected to it.

[0012] Another object of the present invention is to provide a power line-Ethernet hybrid injector and a repeater connected thereto that prevent overheating problems.

[0013] Another object of the present invention is to provide a power line-to-Ethernet hybrid injector that minimizes installation space, and a repeater to which it is connected.

[0014] The object of the present invention is not limited thereto. [Means for solving the problem]

[0015] To achieve the above objective, the present invention provides a power line-Ethernet hybrid injector. The power line-Ethernet hybrid injector is characterized by including a first power line and a second power line that each transfer power supplies with opposite polarity to each other, a plurality of branch lines branching from the first power line and the second power line, a first communication line that transfers communication data and is provided in a number corresponding to the plurality of branch lines, a first low-frequency pass filter that allows the power supplies to pass through and blocks the communication data, a first high-frequency pass filter that blocks the power supplies and allows the communication data to pass through, and a plurality of Ethernet power line communication lines that transfer power / communication data which is a combination of the power supplies that have passed through the first low-frequency pass filter and the communication data that have passed through the first high-frequency pass filter.

[0016] The plurality of branch lines and the first communication line are connected to each other in a one-to-one correspondence, the first low-frequency pass filter is provided on one longitudinal side of each of the plurality of branch lines and is provided upstream of the portion where the branch lines and the first communication line are connected, and the first high-frequency pass filter is provided on one longitudinal side of each of the first communication lines.

[0017] The first low-frequency pass filter is provided at one longitudinal end of the first power line and the second power line, respectively, and the branch lines are branched from the first power line and the second power line to both longitudinal sides of the first low-frequency pass filter, respectively. The first high-frequency pass filter is provided between the branch line branched from the first power line and the first communication line, and between the branch line branched from the second power line and the first communication line, respectively, and the first high-frequency pass filter consists of a coil connected to the first communication line and the first low-frequency pass filter that generates an electromotive force using the first communication line.

[0018] If the power transmitted through the first and second power lines is an AC power source, the system further includes diodes that convert the AC power source to a DC power source before it is branched into the plurality of branch lines.

[0019] On the other hand, the present invention provides a repeater. The repeater is connected to the power line-Ethernet hybrid injector and is provided in a number corresponding to the plurality of Ethernet power line communication lines, and is characterized by including a second communication line that provides only the communication data from the power / communication data transmitted via the Ethernet power line communication lines, a third power line and a fourth power line connected to the plurality of Ethernet power line communication lines and providing only the power from the power / communication data transmitted via the Ethernet power line communication lines, a second low-frequency pass filter that allows the power to pass through and provides the third power line and the fourth power line with respect to the power / communication data, and blocks the communication data, and a second high-frequency pass filter that blocks the power and allows the communication data to pass through and provides it to the second communication line. [Effects of the Invention]

[0020] The present invention includes a first power line and a second power line that transfer power supplies with opposite polarities to each other, a plurality of branch lines that branch off from the first power line and the second power line, a first communication line that transfers communication data and is provided in a number corresponding to the plurality of branch lines, a first low-frequency pass filter that allows the power supplies to pass through but blocks the communication data, a first high-frequency pass filter that blocks the power supplies but allows the communication data to pass through, and a plurality of Ethernet power line communication lines that transfer power / communication data which is a combination of the power supplies that have passed through the first low-frequency pass filter and the communication data that has passed through the first high-frequency pass filter.

[0021] This enables the provision of a power line-Ethernet hybrid injector capable of high-power transmission as well as high-speed communication, and a repeater connected to it, thereby ensuring uniformity of communication quality.

[0022] In addition, according to the present invention, since there is no need to convert from power line communication to an Ethernet communication system, it is possible to prevent the heat generation problem that conventionally occurred in the process of converting the communication system from power line communication to Ethernet communication.

[0023] Furthermore, according to the present invention, by providing a power line - Ethernet hybrid injector that does not need to be converted from a power line communication to an Ethernet communication system, and a repeater communicatively connected thereto, the installation space for the power supply / communication data transmission system can be minimized.

[0024] In addition, according to the present invention, an AC power supply can be used as it is. As a result, in the power supply of an existing PoE system, since an AC / DC converter is not required, costs can be reduced, and higher power than that of a PoE (Power over Ethernet) system can be combined with communication data and transferred.

Brief Description of the Drawings

[0025] [Figure 1] It is a conceptual diagram for explaining a power line - Ethernet hybrid injector according to a first embodiment of the present invention. [Figure 2] It is a configuration diagram for explaining a power line - Ethernet hybrid injector according to a first embodiment of the present invention. [Figure 3] It is a circuit diagram for explaining a transmission method of a power line - Ethernet hybrid injector according to a first embodiment of the present invention. [Figure 4] It is a circuit diagram for explaining a power conversion method of a power line - Ethernet hybrid injector according to a first embodiment of the present invention. [Figure 5] It is a configuration diagram for explaining a repeater communicatively connected to a power line - Ethernet hybrid injector according to a first embodiment of the present invention. [Figure 6]This is a circuit diagram illustrating the transmission method of a power line-Ethernet hybrid injector according to a second embodiment of the present invention. [Figure 7] This is a circuit diagram illustrating the transmission method of a power line-Ethernet hybrid injector according to a third embodiment of the present invention. [Figure 8] This is a circuit diagram illustrating the transmission method of a power line-Ethernet hybrid injector according to a fourth embodiment of the present invention. [Modes for carrying out the invention]

[0026] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. However, the technical concept of the present invention is not limited to the embodiments described herein and can be embodied in other forms. The embodiments presented herein are provided in order to ensure that the disclosed content is thorough and complete, and that the concept of the present invention is fully conveyed to those skilled in the art.

[0027] In this specification, when a component is described as being on another component, it means that it can be formed directly on the other component, or a third component can be sandwiched between them. Furthermore, in the drawings, the shapes and sizes are exaggerated for the sake of effective explanation of the technical content.

[0028] Furthermore, in various embodiments of this specification, terms such as first, second, third, etc., are used to describe various components, but these components should not be limited by such terms. These terms are used simply to distinguish one component from another. Thus, what is referred to as the first component in one embodiment may be referred to as the second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiments. Also, in this specification, "and / or" is used to mean including at least one of the components listed before or after it.

[0029] In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. Furthermore, terms such as “includes” or “having” are intended to specify the existence of features, figures, steps, components, or combinations thereof described in the specification, and should not be understood as excluding the existence or possibility of adding one or more other features, figures, steps, components, or combinations thereof. Also, in this specification, “connection” is used to include both indirect and direct connection of multiple components.

[0030] Furthermore, in explaining the present invention, if a specific explanation of a related known function or configuration is deemed to unnecessarily obscure the gist of the present invention, such detailed explanation will be omitted.

[0031] Figure 1 is a conceptual diagram illustrating a power line-Ethernet hybrid injector according to a first embodiment of the present invention; Figure 2 is a configuration diagram illustrating a power line-Ethernet hybrid injector according to a first embodiment of the present invention; Figure 3 is a circuit diagram illustrating the transmission method of the power line-Ethernet hybrid injector according to a first embodiment of the present invention; Figure 4 is a circuit diagram illustrating the power conversion method of the power line-Ethernet hybrid injector according to a first embodiment of the present invention; and Figure 5 is a configuration diagram illustrating a repeater connected to the power line-Ethernet hybrid injector according to a first embodiment of the present invention.

[0032] As shown in Figure 1, the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention combines the input power (P) and communication data (C), and provides the combined power / communication data (P+C) to a repeater 500 that is connected in series with it.

[0033] Here, the repeater 500 outputs the provided power / communication data (P+C) to the IoT device connected to it and to other adjacent repeaters 500.

[0034] For example, a first repeater 500 adjacent to a power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention provides a portion of the power / communication data (P+C) provided from the power line-Ethernet hybrid injector 100 to the CCTV 10a, and supplies the remaining power / communication data (P+C) to a second repeater 500 connected in series downstream, with respect to the transmission direction.

[0035] The second repeater 500 provides a portion of the power / communication data (P+C) supplied from the first repeater 500 to the street light 10b, and supplies the remaining power / communication data (P+C) to the third repeater 500, which is connected in series downstream.

[0036] The third repeater 500 provides power / communication data (P+C) supplied from the second repeater 500 to the Wi-Fi device 10c.

[0037] Here, the arrangement of three repeaters 500 in series with the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention is merely an example, and the present invention does not limit the number of repeaters 500 connected in series with the power line-Ethernet hybrid injector 100 to three.

[0038] Furthermore, the injector 100 shown here can be manufactured in conjunction with communication products (Ethernet switches, servers, NVRs, etc.).

[0039] As described above, the repeater 500 connected in series to the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention will be described in detail later.

[0040] As described above, the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention combines power (P) and communication data (C) and supplies them to the repeater 500. Here, the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention is provided as an injector capable of not only high power transmission but also high-speed communication.

[0041] As shown in Figures 2 and 3, the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention includes a first input section 101, a branching section 102, a second input section 103, a coupling section 104, and an output section 105.

[0042] Furthermore, the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention further includes a first power line 111, a second power line 112, a branch line 120, a first communication line 130, a first low-frequency pass filter 140, a first high-frequency pass filter 150, and an Ethernet power line communication line 160.

[0043] The first input unit 101 is provided on one side of the power line-Ethernet hybrid injector 100. The first power line 111 and the second power line 112 are connected to the power line-Ethernet hybrid injector 100 through the first input unit 101.

[0044] In other words, the first input unit 101 is provided as a connection terminal to which the first power line 111 and the second power line 112 are connected to the power line-Ethernet hybrid injector 100.

[0045] According to a first embodiment of the present invention, the first power line 111 and the second power line 112 can each transfer power supplies of opposite polarity from an external power source. For example, the first power line 111 can transfer AC+ power, and the second power line 112 can transfer AC- power.

[0046] Here, according to the first embodiment of the present invention, the power supplied from the external power source is AC 100V to 240V, or high-voltage power exceeding AC 240V. Also, recently, the regular power supplied to smart city housing complexes is not AC power but DC power, so the power supplied from the external power source is also DC power.

[0047] On the other hand, the IoT devices connected to Repeater 500 are devices powered by a DC power supply.

[0048] As shown in Figure 4, the power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention further includes a diode 170.

[0049] The diode 170 can convert the transmitted AC power to DC power before the first power line 111 and the second power line 112 are branched by the branching section 102, when the power transmitted via the first power line 111 and the second power line 112 is an AC power source.

[0050] For example, the diode 170 can convert the AC+ power transmitted through the first power line 111 into a DC+ power.

[0051] Furthermore, the diode 170 can convert the AC power transmitted via the second power line 112 into a DC power.

[0052] As a result, repeater 500 is supplied with DC power, which in turn supplies DC power to IoT devices connected to repeater 500 that are also powered by DC power supplies.

[0053] The branching section 102 branches the first power line 111 and the second power line 112 in a number corresponding to the number of first communication lines 130, in order to connect them one-to-one with the multiple first communication lines 130.

[0054] According to the first embodiment of the present invention, four first communication lines 130 are provided. As a result, the first power line 111 and the second power line 112 can be branched into four branch lines 120 by the branching section 102.

[0055] In other words, according to the first embodiment of the present invention, the first power line 111 is branched into a first branch line 121 and a second branch line 122 by the branching section 102. The second power line 112 is also branched into a third branch line 123 and a fourth branch line 124 by the branching section 102.

[0056] As a result, the AC+ power transmitted via the first power line 111 is supplied to the first branch line 121 and the second branch line 122, and the AC- power transmitted via the second power line 112 is supplied to the third branch line 123 and the fourth branch line 124.

[0057] The second input unit 103 is provided on the other side of the power line-Ethernet hybrid injector 100, on which the first input unit 101 is provided. The first communication line 130 is connected to the power line-Ethernet hybrid injector 100 via the second input unit 103.

[0058] In other words, the second input unit 103 is provided as a connection terminal to which the first communication line 130 is connected to the power line-Ethernet hybrid injector 100.

[0059] According to a first embodiment of the present invention, the first communication line 130 can transfer communication data provided from an Ethernet chipset.

[0060] In this first embodiment of the present invention, the first communication line 130 is provided to transfer communication data at a speed of 10 / 100 Mbps. For this purpose, the first communication line 130 is provided in four lines.

[0061] In other words, the first communication line 130 has a 1-1 communication line 131, a 1-2 communication line 132, a 1-3 communication line 133, and a 1-4 communication line 134.

[0062] According to the first embodiment of the present invention, the number of branch lines 120 is determined by the number of such first communication lines 130.

[0063] Here, it is one example that the first communication line 130 is configured to transfer communication data at a speed of 10 / 100 Mbps, but the first communication line 130 can also be configured to transfer communication data at a speed of 1 Gbps.

[0064] In this case, the first communication line 130 is provided in eight lines, and the branch line 120 is also divided into eight lines accordingly. That is, the first power line 111 and the second power line 112 are each divided into four lines.

[0065] The coupling unit 104 can combine power transmitted via the first power line 111 and the second power line 112, and supplied to the first branch line 121, the second branch line 122, the third branch line 123, and the fourth branch line 124 branched from them, with communication data transmitted via the 1-1 communication line 131, the 1-2 communication line 132, the 1-3 communication line 133, and the 1-4 communication line 134.

[0066] According to the first embodiment of the present invention, the coupling portion 104 connects the 1-1 communication line 131 to one longitudinal side of the first branch line 121. This combines the AC+ power transmitted via the first branch line 121 with the communication data transmitted via the 1-1 communication line 131.

[0067] Furthermore, the coupling portion 104 connects the first and second communication lines 132 to one longitudinal side of the second branch line 122. This allows the AC+ power transmitted via the second branch line 122 to be coupled with the communication data transmitted via the first and second communication lines 132.

[0068] Furthermore, the coupling portion 104 connects the first to third communication lines 133 to one longitudinal side of the third branch line 123. This allows the AC power transmitted via the third branch line 123 to be coupled with the communication data transmitted via the first to third communication lines 133.

[0069] Furthermore, the coupling portion 104 connects the first to fourth communication lines 134 to one longitudinal side of the fourth branch line 124. This allows the AC power transmitted via the fourth branch line 124 to be coupled with the communication data transmitted via the first to fourth communication lines 134.

[0070] The output unit 105 is provided on the other side of the power line-Ethernet hybrid injector 100, which has a first input unit 101 on one side and a second input unit 103 on the other side.

[0071] The output unit 105 is provided as an output terminal from which an Ethernet power line communication line 160, which provides power / communication data coupled via the coupling unit 104 to an adjacent repeater 500, is brought out to the outside.

[0072] On the other hand, the first low-frequency pass filter 140 is provided as a coil. Such a first low-frequency pass filter 140 allows low-frequency power supplies to pass through, but blocks high-frequency communication data.

[0073] According to a first embodiment of the present invention, the first low-frequency pass filter 140 is provided on one longitudinal side of each of the multiple branch lines 120. Here, the first low-frequency pass filter 140 is provided upstream of the connection portion between the branch line 120 and the first communication line 130.

[0074] In other words, according to the first embodiment of the present invention, four first low-frequency pass filters 140 are provided on one longitudinal side of the first branch line 121 upstream of the connection portion between the first branch line 121 and the 1-1 communication line 131, on one longitudinal side of the second branch line 122 upstream of the connection portion between the second branch line 122 and the 1-2 communication line 132, on one longitudinal side of the third branch line 123 upstream of the connection portion between the third branch line 123 and the 1-3 communication line 133, and on one longitudinal side of the fourth branch line 124 upstream of the connection portion between the fourth branch line 124 and the 1-4 communication line 134.

[0075] As a result, the AC+ power transmitted via the first branch line 121 and the second branch line 122 passes through the corresponding first low-frequency pass filter 140. On the other hand, the communication data transmitted via the 1-1 communication line 131 and the 1-2 communication line 132 are blocked from moving upstream by the corresponding first low-frequency pass filter 140. This prevents the backflow of communication data.

[0076] Furthermore, the AC power transmitted via the third branch line 123 and the fourth branch line 124 passes through the corresponding first low-frequency pass filter 140. On the other hand, the communication data transmitted via the first-to-third communication lines 133 and the first-to-fourth communication lines 134 are blocked from moving upstream by the corresponding first low-frequency pass filter 140. This prevents the backflow of communication data.

[0077] The first high-frequency pass filter 150 is provided on one longitudinal side of the first communication line 130, more specifically, the 1-1 communication line 131, the 1-2 communication line 132, the 1-3 communication line 133, and the 1-4 communication line 134.

[0078] In other words, according to the first embodiment of the present invention, the first low-frequency pass filter 140 and the first high-frequency pass filter 150 are provided in the same number. Such a first high-frequency pass filter 150 is provided as a capacitor.

[0079] The first high-frequency pass filter 150 blocks low-frequency power transmitted via the branch line 120, while allowing high-frequency communication data to pass through.

[0080] As a result, communication data transmitted through the 1-1 communication line 131, the 1-2 communication line 132, the 1-3 communication line 133, and the 1-4 communication line 134 each pass through the corresponding first high-frequency pass filter 150. In contrast, AC power transmitted through the first branch line 121, the second branch line 122, the third branch line 123, and the fourth branch line 124 is blocked from traveling through the first communication line 130 by the corresponding first low-frequency pass filter 140.

[0081] As a result, the AC+ power transmitted via the first power line 111 and the first branch line 121, and the corresponding first low-frequency pass filter 140, and the communication data transmitted via the 1-1 communication line 131, and the corresponding first high-frequency pass filter 150, are combined by the coupling unit 104 and then transmitted in one direction.

[0082] According to one embodiment of the present invention, the Ethernet power line communication line 160 includes a first Ethernet power line communication line 161 connected to the longitudinal end of the first branch line 121, more specifically, to the connection portion between the first branch line 121 and the first communication line 131.

[0083] As a result, the power / communication data combined as described above is provided to the first Ethernet power line communication line 161 and supplied to the repeater 500 via the first Ethernet power line communication line 161.

[0084] Furthermore, the AC+ power transmitted via the first power line 111 and the second branch line 122, which has passed through the corresponding first low-frequency pass filter 140, and the communication data transmitted via the first-to-second communication line 132, which has passed through the corresponding first high-frequency pass filter 150, are combined by the coupling unit 104 and then transmitted in one direction.

[0085] According to one embodiment of the present invention, the Ethernet power line communication line 160 further includes a second Ethernet power line communication line 162 connected to the longitudinal end of the second branch line 122, more specifically, to the connection portion between the second branch line 122 and the first-to-second communication line 132.

[0086] As a result, the power / communication data coupled as described above is provided to the second Ethernet power line communication line 162 and can be supplied to the repeater 500 via the second Ethernet power line communication line 162.

[0087] Furthermore, the AC power transmitted via the second power line 112 and the third branch line 123, which has passed through the corresponding first low-frequency pass filter 140, and the communication data transmitted via the first to third communication lines 133, which has passed through the corresponding first high-frequency pass filter 150, are combined by the coupling unit 104 and then transmitted in one direction.

[0088] According to one embodiment of the present invention, the Ethernet power line communication line 160 further includes a third Ethernet power line communication line 163 connected to the longitudinal end of the third branch line 123, more specifically, to the connection portion between the third branch line 123 and the first to third communication lines 133.

[0089] As a result, the power / communication data combined as described above is provided to the third Ethernet power line communication line 63 and supplied to the repeater 500 via the third Ethernet power line communication line 163.

[0090] In addition, the AC power transmitted via the second power line 112 and the fourth branch line 124, and the communication data transmitted via the first to fourth communication lines 134, and the communication data transmitted via the first to fourth communication lines 134, and the communication data transmitted via the first high-frequency pass filter 150, are combined by the coupling unit 104 and then transmitted in one direction.

[0091] According to one embodiment of the present invention, the Ethernet power line communication line 160 further includes a fourth Ethernet power line communication line 164 connected to the longitudinal end of the fourth branch line 124, more specifically, to the connection portion between the fourth branch line 124 and the first to fourth communication lines 134.

[0092] As a result, the power / communication data coupled as described above is provided to the fourth Ethernet power line communication line 164 and supplied to the repeater 500 via the fourth Ethernet power line communication line 164.

[0093] Thus, according to the first embodiment of the present invention, an AC power supply can be used as is, thereby enabling the transmission of higher power than that of a PoE (Power over Ethernet) system, coupled with communication data.

[0094] Furthermore, according to the first embodiment of the present invention, a power line-Ethernet hybrid injector 100 capable of high-speed communication is provided, and by enabling such high-speed communication, uniformity of communication quality can be ensured.

[0095] Furthermore, according to the first embodiment of the present invention, there is no need to convert from power line communication to an Ethernet communication system. This prevents the heat generation problem that occurred in the conventional process of converting a communication system from power line communication to Ethernet communication, and also minimizes the installation space.

[0096] Furthermore, according to the first embodiment of the present invention, a power line-Ethernet hybrid injector 100 that can be customized on-site can be provided.

[0097] On the other hand, as mentioned above, the repeater 500 can communicate with the power line-Ethernet hybrid injector 100.

[0098] For this purpose, the repeater 500 includes a second communication line 510, a third power line 521, a fourth power line 522, a second low-frequency pass filter 530, and a second high-frequency pass filter 540.

[0099] The second communication line 510 is provided in a number corresponding to the multiple Ethernet power line communication lines 160. Thus, the second communication line 510 includes the 2-1 communication line 511, the 2-2 communication line 512, the 2-3 communication line 513, and the 2-4 communication line 514.

[0100] The communication line 511 described in 2-1 is connected to the first Ethernet power line communication line 161. The communication line 511 described in 2-1 can provide only the communication data from the power / communication data transmitted via the first Ethernet power line communication line 161.

[0101] The communication line 512 described in section 2-2 is connected to the second Ethernet power line communication line 162. The communication line 512 described in section 2-2 can provide only the communication data from the power / communication data transmitted via the second Ethernet power line communication line 162.

[0102] The second- and third communication lines 513 are connected to the third Ethernet power line communication line 163. The second- and third communication lines 513 can provide only the communication data from the power / communication data transmitted via the third Ethernet power line communication line 163.

[0103] The second-to-fourth communication line 514 is connected to the fourth Ethernet power line communication line 164. The second-to-fourth communication line 514 can provide only the communication data from the power / communication data transmitted via the fourth Ethernet power line communication line 164.

[0104] The third power line 521 and the fourth power line 522 are connected to a plurality of Ethernet power line communication lines 160.

[0105] The third power line 521 and the fourth power line 522 can provide only power from the power / communication data transmitted via the Ethernet power line communication line 160.

[0106] Here, the third power line 521 is provided with AC+ power transmitted via the first Ethernet power line communication line 161 and the second Ethernet power line communication line 162.

[0107] Furthermore, the fourth power line 522 is provided with AC power transmitted via the third Ethernet power line communication line 163 and the fourth Ethernet power line communication line 164.

[0108] The second low-frequency pass filter 530 is provided on each of the branch lines of the third power line 521, which is connected to the first Ethernet power line communication line 161 and the second Ethernet power line communication line 162, respectively. Such a second low-frequency pass filter 530 is provided as a coil, similar to the first low-frequency pass filter 140.

[0109] Furthermore, the second low-frequency pass filter 530 is provided on each of the branch lines of the fourth power line 522 that are connected to the third Ethernet power line communication line 163 and the fourth Ethernet power line communication line 164, respectively.

[0110] This second low-frequency pass filter 530 allows low-frequency power signals to pass through, while blocking communication data, from the power / communication data transmitted from the Ethernet power line communication line 160.

[0111] As a result, only power can be supplied to the third power line 521 and the fourth power line 522.

[0112] The second high-frequency pass filter 540 is provided in each of the second-first communication line 511, the second-second communication line 512, the second-third communication line 513, and the second-fourth communication line 514. Similar to the first high-frequency pass filter 150, this second high-frequency pass filter 540 is provided as a capacitor.

[0113] According to the first embodiment of the present invention, the second high-frequency pass filter 540 blocks the power supply and allows the communication data to pass through among the power supply / communication data transmitted from the Ethernet power line communication line 160.

[0114] As a result, only communication data can be provided to the 2-1 communication line 511, the 2-2 communication line 512, the 2-3 communication line 513, and the 2-4 communication line 514.

[0115] As shown in Figure 5, the repeater 500 further includes an input unit 501, a power supply / communication data separation unit 502, an Ethernet chipset 503, a power supply unit 504, a power supply / communication data coupling unit 505, and an output unit 506.

[0116] The input unit 501 is provided as a connection terminal to which the Ethernet power line communication line 160 is connected. As a result, power / communication data (PC1) transmitted via the Ethernet power line communication line 160 is input to the input unit 501.

[0117] The power supply / communication data separation unit 502 separates the coupled power supply / communication data (PC1) into power supply (P) and communication data (C). For example, the power supply / communication data separation unit 502 can separate the power supply / communication data (PC1) into power supply (P) and communication data (C) by allowing only the power supply (P) to pass through the power supply / communication data (PC1) via a second low-frequency pass filter 530, and by allowing only the communication data (C) to pass through the power supply / communication data (PC1) via a second high-frequency pass filter 540.

[0118] The Ethernet chipset 503 is provided with communication data (C) separated from the power / communication data separation unit 502. The Ethernet chipset 503 is provided with communication data (C) via the second communication line 510.

[0119] The Ethernet chipset 503 extracts and classifies specific data from the provided communication data (C). For example, the Ethernet chipset 503 can extract signals corresponding to IoT devices 10a, such as CCTV, directly connected to the repeater 500, and provide them to the IoT devices 10a.

[0120] Here, the repeater 500 and the IoT device 10a can also be manufactured as a single product.

[0121] On the other hand, the signals provided to the IoT device 10a are defined as processing communication data (C1), and the data from the communication data (C) that does not fall under the processing communication data (C1) are defined as transmission communication data (C2). In other words, the transmission communication data (C2) can be defined as the remaining communication data from the communication data (C) excluding the processing communication data (C1).

[0122] The power supply unit 504 is provided with a power supply (P) separated from the power supply / communication data separation unit 502, and distributes the power supply (P). Specifically, the power supply unit 504 distributes the power supply (P) and supplies a predetermined amount of power to the IoT device 10a. Here, the power supply supplied to the IoT device 10a is defined as the consumed power supply (P1), and the power supply (P) supplied from the power supply / communication data separation unit 502, excluding the consumed power supply (P1), is defined as the surplus power supply (P2). In other words, the power supply unit 504 can classify the power supply (P) provided from the power supply / communication data separation unit 502 into consumed power supply (P1) and surplus power supply (P2).

[0123] Furthermore, the power supply unit 504 distributes a predetermined amount of power from the surplus power supply (P2) and provides the distributed power to the Ethernet chipset 503. Here, the predetermined power supply supplied to the Ethernet chipset 503 is defined as the Ethernet chipset power supply (P1').

[0124] The power supply / communication data coupling unit 505 combines the transmitted communication data (C2) and the surplus power supply (P2). Specifically, the power supply / communication data coupling unit 505 receives the transmitted communication data (C2) from the Ethernet chipset 503 and the surplus power supply (P2) from the power supply unit 504.

[0125] The power supply / communication data coupling unit 505 combines the transmission communication data (C2) provided from the Ethernet chipset 503 with the surplus power supply (P2) provided from the power supply unit 504. For example, the power supply / communication data coupling unit 505 can combine the transmission communication data (C2) by changing the amplitude or frequency of the surplus power supply (P2).

[0126] The output unit 506 can provide power / communication data (PC2), consisting of transmission communication data (C2) coupled in the power / communication data coupling unit 505 and surplus power (P2), to other adjacent repeaters 500 via four Ethernet power line communication lines.

[0127] Hereinafter, a power line-Ethernet hybrid injector according to a second embodiment of the present invention will be described with reference to Figure 6.

[0128] Figure 6 is a circuit diagram illustrating the transmission method of a power line-Ethernet hybrid injector according to a second embodiment of the present invention.

[0129] As shown in Figure 6, the power line-Ethernet hybrid injector 200 according to the second embodiment of the present invention includes a first power line 211, a second power line 212, a branch line, a first communication line, a first low-frequency pass filter 240, a first high-frequency pass filter 250, and an Ethernet power line communication line.

[0130] The first power line 211 and the second power line 212 can each transfer power supplies of opposite polarity from an external power source. For example, the first power line 211 can transfer AC+ power, and the second power line 212 can transfer AC- power.

[0131] According to a second embodiment of the present invention, the first power line 211 is electrically connected to the longitudinal center of any one of the first low-frequency pass filters 240.

[0132] Furthermore, the second power line 212 is electrically connected to the longitudinal center of the other first low-frequency pass filter 240.

[0133] The number of branch lines provided corresponds to the number of the first communication lines. According to a second embodiment of the present invention, the branch lines include a first branch line 221 branched off from the first power line 211, a second branch line 222, and a third branch line 223 and a fourth branch line 224 branched off from the second power line 212.

[0134] Here, the first power line 211 is electrically connected to the longitudinal center of one of the low-frequency pass filters 240, so that the first branch line 221 and the second branch line 222 are branched to both longitudinal sides of the one of the low-frequency pass filters 240. As a result, the first branch line 221 and the second branch line 222 are supplied with the same AC+ power.

[0135] Similarly, by electrically connecting the second power line 212 to the longitudinal center of the other low-frequency pass filter 240, the third branch line 223 and the fourth branch line 224 are branched to both longitudinal sides of the other low-frequency pass filter 240. This provides the third branch line 223 and the fourth branch line 224 with the same AC power supply.

[0136] The first communication line can transfer communication data provided by the Ethernet chipset. According to a second embodiment of the present invention, the first communication line is configured to transfer communication data at a speed of 10 / 100 Mbps. For this purpose, the first communication line is provided in four lines.

[0137] In other words, the first communication line is provided as the 1-1 communication line 231, the 1-2 communication line 232, the 1-3 communication line 233, and the 1-4 communication line 234.

[0138] In this second embodiment of the present invention, the 1-1 communication line 231 and the 1-2 communication line 232 form a closed loop. Also, the 1-3 communication line 233 and the 1-4 communication line 234 form a closed loop.

[0139] The first low-frequency pass filter 240 is provided as a coil, allowing low-frequency power signals to pass through while blocking high-frequency communication data. According to a second embodiment of the present invention, it is provided at one end in the longitudinal direction of the first power line 211 and the second power line 212, respectively.

[0140] As a result, the AC+ power transmitted through the first power line 211 passes through the first low-frequency pass filter 240, which is provided at one longitudinal end of the first power line 211, and is supplied to the first branch line 221 and the second branch line 222.

[0141] Furthermore, the AC power transmitted via the second power line 212 passes through the first low-frequency pass filter 240, which is provided at one longitudinal end of the second power line 212, and is supplied to the third branch line 223 and the fourth branch line 224.

[0142] The first high-frequency pass filter 250 is provided between the branch line branching off from the first power line 211 and the first communication line. More specifically, the first high-frequency pass filter 250 is provided between the first branch line 221 and the second branch line 222 branching off from the first power line 211, and between the first-1 communication line 231 and the first-2 communication line 232 which form a closed loop.

[0143] Furthermore, the first high-frequency pass filter 250 is provided between the branch line branching off from the second power line 212 and the first communication line. More specifically, the first high-frequency pass filter 250 is provided between the third branch line 223 and the fourth branch line 224 branching off from the second power line 212, and between the first to third communication lines 233 and the first to fourth communication lines 234 which form a closed loop.

[0144] According to a second embodiment of the present invention, the first high-frequency pass filter 250 consists of a filter that shuts off low-frequency power supplies and allows high-frequency communication data to pass through.

[0145] The primary coil forming the first high-frequency pass filter 250 is connected to one longitudinal end of the 1-1 communication line 231 and the 1-2 communication line 232, and to one longitudinal end of the 1-3 communication line 233 and the 1-4 communication line 234, respectively. The secondary coil, which serves as the first low-frequency pass filter 240, is connected to one longitudinal end of the first power line 211 and the second power line 212, respectively. Here, the number of turns of the primary and secondary coils can be changed in design. Furthermore, an iron core can be provided so that an electromotive force is induced from the primary coil to the secondary coil.

[0146] When communication data provided by the Ethernet chipset and transmitted via the closed-loop communication lines 1-1 and 1-2 reaches the first high-frequency pass filter 250, an electromotive force is induced by the first high-frequency pass filter 250, and the communication data transmitted via the communication line 1-1 231 is transmitted to the first branch line 221 side, and the communication data transmitted via the communication line 1-2 232 is transmitted to the second branch line 222 side.

[0147] Thus, the communication data transmitted to the first branch line 221 side through the electromotive force induced by the first high-frequency pass filter 250 is coupled with the AC+ power transmitted via the first branch line 221 and provided to the first Ethernet power line communication line 261, and the communication data transmitted to the second branch line 222 side through the electromotive force induced by the first high-frequency pass filter 250 is coupled with the AC+ power transmitted via the second branch line 222 and provided to the second Ethernet power line communication line 262.

[0148] Similarly, when communication data provided from the Ethernet chipset and transmitted through the closed-loop first to third communication lines 233 and the first to fourth communication lines 234 reaches the first high-frequency pass filter 250, an electromotive force is induced by the first high-frequency pass filter 250, and the communication data transmitted through the first to third communication lines 233 is transmitted to the third branch line 223 side, and the communication data transmitted through the first to fourth communication lines 234 is transmitted to the fourth branch line 224 side.

[0149] Thus, the communication data transmitted to the third branch line 223 side through the electromotive force induced by the first high-frequency pass filter 250 is coupled with the AC power transmitted via the third branch line 223 and provided to the third Ethernet power line communication line 263, and the communication data transmitted to the fourth branch line 224 side through the electromotive force induced by the first high-frequency pass filter 250 is coupled with the AC power transmitted via the fourth branch line 224 and provided to the fourth Ethernet power line communication line 264.

[0150] According to a second embodiment of the present invention, a repeater 500 connected to such a power line-Ethernet hybrid injector 200 includes a second communication line, a third power line 521, a fourth power line 522, a second low-frequency pass filter 530, and a second high-frequency pass filter 540.

[0151] Here, the repeater 500 has the same structure as the power line-Ethernet hybrid injector 200.

[0152] As a result, of the power / communication data transmitted via the first Ethernet power line communication line 261, only the communication data is transmitted to the second-first communication line 511 by the electromotive force induced by the second high-frequency pass filter 540, and of the power / communication data transmitted via the first Ethernet power line communication line 261, only the power passes through the second low-frequency pass filter 530 and is provided to the third power line 521.

[0153] Furthermore, of the power / communication data transmitted via the second Ethernet power line communication line 262, only the communication data is transmitted to the second-second communication line 512 by the electromotive force induced by the second high-frequency pass filter 540, and of the power / communication data transmitted via the second Ethernet power line communication line 262, only the power passes through the second low-frequency pass filter 530 and is provided to the third power line 521.

[0154] Furthermore, of the power / communication data transmitted via the third Ethernet power line communication line 263, only the communication data is transmitted to the second-third communication line 513 by the electromotive force induced by the second high-frequency pass filter 540, and of the power / communication data transmitted via the third Ethernet power line communication line 263, only the power passes through the second low-frequency pass filter 530 and is provided to the fourth power line 522.

[0155] Furthermore, of the power / communication data transmitted via the fourth Ethernet power line communication line 264, only the communication data is transmitted to the second-to-fourth communication line 514 by the electromotive force induced by the second high-frequency pass filter 540, and of the power / communication data transmitted via the fourth Ethernet power line communication line 264, only the power passes through the second low-frequency pass filter 530 and is provided to the fourth power line 522.

[0156] In this way, the power and a portion of the communication data separated by the second low-frequency pass filter 530 and the second high-frequency pass filter 540 are supplied to the IoT device connected to the repeater 500, and the remainder is further combined and provided to other repeaters 500 located downstream with respect to the transmission direction.

[0157] The power line-Ethernet hybrid injector 200 according to the second embodiment of the present invention is more expensive than the power line-Ethernet hybrid injector (100 in Figure 3) according to the first embodiment of the present invention, but when standardized, it can ensure higher stability than the power line-Ethernet hybrid injector 100 according to the first embodiment.

[0158] On the other hand, Figure 7 is a circuit diagram illustrating the transmission method of a power line-Ethernet hybrid injector according to a third embodiment of the present invention.

[0159] As shown in Figure 7, the power line-Ethernet hybrid injector 300 according to the third embodiment of the present invention has the same structure as the power line-Ethernet hybrid injector (100 in Figure 3) according to the first embodiment of the present invention. Here, the repeater 500 connected to it for communication has the same structure as the repeater according to the second embodiment of the present invention.

[0160] In other words, according to a third embodiment of the present invention, a power line-Ethernet hybrid injector 100 according to the first embodiment of the present invention and a repeater 500 according to the second embodiment of the present invention can be combined and connected for communication.

[0161] Figure 8 is a circuit diagram illustrating the transmission method of a power line-Ethernet hybrid injector according to a fourth embodiment of the present invention.

[0162] As shown in Figure 8, the power line-Ethernet hybrid injector 400 according to the fourth embodiment of the present invention has the same structure as the power line-Ethernet hybrid injector (200 in Figure 6) according to the second embodiment of the present invention. Here, the repeater 500 connected to it for communication has the same structure as the repeater according to the first embodiment of the present invention.

[0163] In other words, according to the fourth embodiment of the present invention, a power line-Ethernet hybrid injector 200 according to the second embodiment of the present invention and a repeater 500 according to the first embodiment of the present invention can be combined to establish a communication connection.

[0164] Although the present invention has been described in detail above using preferred embodiments, the scope of the present invention is not limited to any particular embodiment and should be analyzed by the appended claims. Furthermore, a person with ordinary skill in the art will understand that many modifications and variations are possible without departing from the scope of the present invention.

Claims

1. A first power line and a second power line that transfer power supplies with opposite polarities to each other, Multiple branch lines branching off from the first power line and the second power line, respectively, A first communication line is provided in a number corresponding to the number of branch lines, which transfers communication data. A first low-frequency pass filter that allows the power supply to pass through but blocks the communication data, The power supply is shut off, and the communication data is allowed to pass through by a first high-frequency pass filter, A power line-Ethernet hybrid injector, comprising a plurality of Ethernet power line communication lines for transferring power / communication data, which is a combination of power that has passed through the first low-frequency pass filter and communication data that has passed through the first high-frequency pass filter.

2. The aforementioned multiple branch lines and the first communication line are connected to each other in a one-to-one correspondence. The first low-frequency pass filter is provided on one longitudinal side of each of the plurality of branch lines, and is provided upstream of the portion where the branch line is connected to the first communication line. The power line-Ethernet hybrid injector according to claim 1, wherein the first high-frequency pass filter is provided on one longitudinal side of each of the first communication lines.

3. The first low-frequency pass filter is provided at one end in the longitudinal direction of the first power line and the second power line, respectively. The branch lines are branched from the first power line and the second power line to both sides in the longitudinal direction of the first low-frequency pass filter, respectively. The first high-frequency pass filter is provided between the branch line branched from the first power line and the first communication line, and between the branch line branched from the second power line and the first communication line, respectively. The power line-Ethernet hybrid injector according to claim 1, wherein the first high-frequency pass filter comprises a coil connected to the first communication line and the first low-frequency pass filter that generates an electromotive force by the first communication line.

4. The power line-Ethernet hybrid injector according to claim 1, further comprising a diode that converts the AC power transmitted through the first and second power lines to DC power before it is branched into the plurality of branch lines, if the power transmitted through the first and second power lines is AC power.

5. A power line-Ethernet hybrid injector according to claim 1 is connected to a communication network, A second communication line is provided in a number corresponding to the aforementioned multiple Ethernet power line communication lines, and which provides only the communication data from the power / communication data transmitted via the Ethernet power line communication lines. A third power line and a fourth power line connected to the aforementioned plurality of Ethernet power line communication lines, which provide only power to the power / communication data transmitted via the Ethernet power line communication lines, Of the aforementioned power supply / communication data, the power supply is allowed to pass through and provided to the third and fourth power lines, while the communication data is blocked by a second low-frequency pass filter. A repeater including a second high-frequency pass filter that, of the aforementioned power supply and communication data, cuts off the power supply and allows the communication data to pass through to provide it to the second communication line.

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