WO2006095402A1 - 信号バイパス装置 - Google Patents
信号バイパス装置 Download PDFInfo
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- WO2006095402A1 WO2006095402A1 PCT/JP2005/003895 JP2005003895W WO2006095402A1 WO 2006095402 A1 WO2006095402 A1 WO 2006095402A1 JP 2005003895 W JP2005003895 W JP 2005003895W WO 2006095402 A1 WO2006095402 A1 WO 2006095402A1
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- WIPO (PCT)
- Prior art keywords
- capacitor
- cable
- communication
- line
- signal
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
Definitions
- the present invention relates to a signal bypass device that bypasses a communication failure device existing on the way and transmits a communication signal on an electric wire.
- a bypass transmission method conventionally, in a power line communication that transmits a high-frequency signal using a power line, a distribution transformer causes a communication failure. Therefore, a method is known in which a communication signal on a high-voltage distribution line is transmitted from the high-voltage distribution line to the low-voltage distribution line by bypassing the distribution transformer (for example, Patent Document 1-13).
- Patent Document 1 a high-frequency communication signal is superimposed on a high-voltage distribution line, a first capacitor and a resistor connected in series with the capacitor are formed between the phases of the high-voltage distribution line, and both ends of the resistor are formed.
- a signal transmission method using a power line that transmits a high-frequency communication signal to the low-voltage distribution line by bypassing the distribution transformer from the high-voltage distribution line is disclosed. ing.
- the signal line is magnetically coupled to the two power lines in front of the breaker on the secondary side of the transformer and the two power lines that have passed through the watt-hour meter of the customer, respectively.
- a method of bypassing the breaker and watt hour meter with a signal line is disclosed.
- Patent Document 3 an LC low-pass filter is formed together with a capacitor C1 using an inductance component due to the winding of two transformers Tl and T2, and a band-pass filter is inserted between the transformers Tl and T2. A method is disclosed.
- Patent Document 1 JP 2002-217796 A
- Patent Document 2 JP 2004-282397 A
- Patent Document 3 Japanese Patent Laid-Open No. 2003-174349
- the signal bypass transmission method according to the prior art has a problem that it is affected by the distributor to be bypassed.
- the wiring device to be bypassed is a device with a branch, such as a distribution board, it is affected by signal reflection from the branch end, resulting in poor transmission characteristics of the bypassed signal.
- a conductive tape or sheet is wound around an insulating coating of a high-voltage (low-voltage) distribution line, or a high-voltage is obtained by dividing a conductive cylindrical member.
- a method of sandwiching the insulation coating of the (low voltage) distribution line and forming a capacitor across the wire lm to secure transmission characteristics is cited.
- the work for forming the capacitor is not easy.
- the power connected by a power line to transmit a high-frequency signal using a power line For example, when the switch is in an open circuit state, the switch becomes a communication failure device. As long as the switch can be binosed and the wires at both ends can be connected, high-frequency signals can be transmitted using any wire, so the communication service can be improved.
- the present invention has been made in view of the above, and in the case of transmitting a high-frequency signal using an arbitrary wire connected only by power line communication that transmits a high-frequency signal using a power line, the bypass target device
- the purpose is to obtain a signal bypass device that can be bypassed regardless of the model and that is easy to install.
- the present invention provides a communication failure device in the middle of two wires! Then, the communication failure is performed so that the split cores disposed on each of the two electric wires on both ends of the communication failure device and the split cores on both ends of the communication failure device function as a transformer.
- a cable routed through the split core on each end side of the device and the split core on each end side of the communication failure device near the location where the cable passes, It is characterized by having at least one of a series capacitor interposed in the cable and a parallel capacitor existing between the wires of the cable.
- on each end side of the communication failure equipment It is characterized by including a capacitor for connecting between the electric wire connecting ends.
- the communication obstacle device has a capacitance component by a capacitor that connects between wire connection ends on each end side of the communication obstacle device and an inductance component by a split core disposed on each wire. Since it is not affected by the characteristics, it can be bypassed regardless of the model of the target device of the no-pass, and the high-frequency signal can be transmitted using any electric wire connected only by the power line communication that transmits the high-frequency signal using the power line. Can be transmitted.
- the series capacitor and the parallel capacitor form a high-pass filter and a low-pass filter in combination with the inductance component of the transformer in which the split core functions, so that loss characteristics in a desired frequency band can be reduced.
- the split core can be disposed with the electric wire sandwiched, when the electric wire is a power supply line such as a power line, installation work in a live line state can be performed.
- the bypass when not only power line communication that transmits a high-frequency signal using a power line but also a high-frequency signal that is transmitted using an arbitrary wire, the bypass can be performed regardless of the model of the bypass target device.
- a signal bypass device that can be installed and has ease of installation work is obtained, the effect is obtained.
- FIG. 1 is a diagram showing a device arrangement of a signal bino device according to Embodiment 1 of the present invention.
- FIG. 2 is an equivalent circuit diagram showing a circuit configuration of the signal binos device shown in FIG.
- Fig. 3-1 is an equivalent circuit diagram (part 1) from which the equivalent circuit force shown in Fig. 2 can also be derived.
- Fig. 3-2 is an equivalent circuit diagram (part 2) from which the equivalent circuit force shown in Fig. 2 can be derived.
- FIG. 4 is a characteristic diagram (part 1) showing an example of the loss characteristic of the signal bypass device shown in FIG.
- FIG. 5 is a characteristic diagram (part 2) showing an example of the loss characteristic of the signal bypass device shown in FIG. 1.
- FIG. 6 is a characteristic diagram (part 3) showing an example of the loss characteristic of the signal bypass device shown in FIG. 1.
- FIG. 7 is a diagram showing an equipment layout of a signal bypass device according to Embodiment 2 of the present invention.
- FIG. 8 is an equivalent circuit diagram showing a circuit configuration of the signal binos device shown in FIG. 7.
- FIG. 9 is a diagram showing an equipment arrangement of the signal bypass device according to the third embodiment of the present invention.
- FIG. 10 is an equivalent circuit diagram showing a circuit configuration of the signal binos device shown in FIG. 9.
- FIG. 11 is a diagram showing an equipment arrangement of a signal bypass device according to Embodiment 4 of the present invention.
- FIG. 12 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG. 11.
- FIG. 13 is a diagram showing an equipment arrangement of a signal bypass device according to Embodiment 5 of the present invention.
- FIG. 14 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- FIG. 15 is a diagram showing an equipment arrangement of a signal bypass device according to Embodiment 6 of the present invention.
- FIG. 16 is an equivalent circuit diagram showing a circuit configuration of the signal binos device shown in FIG. 15.
- FIG. 17 is a diagram showing an equipment layout of the signal bypass device according to the seventh embodiment of the present invention.
- FIG. 18 is an equivalent circuit diagram showing a circuit configuration of the signal binos device shown in FIG.
- FIG. 19 is a diagram showing an equipment layout of the signal bypass device according to the eighth embodiment of the present invention.
- FIG. 20 is an equivalent circuit diagram showing a circuit configuration of the signal binos device shown in FIG.
- FIG. 21 is a diagram showing an equipment layout of the signal bypass device according to the ninth embodiment of the present invention.
- FIG. 22 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG. 21.
- FIG. 23 is a diagram showing an equipment arrangement of the signal bypass device according to the tenth embodiment of the present invention.
- FIG. 24 is an equivalent circuit diagram showing the circuit configuration of the signal binos device shown in FIG. 23.
- FIG. 1 is a diagram showing an equipment layout of the signal binos apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- power line communication that transmits a high-frequency signal using a power line will be described as an example in order to facilitate understanding of the present invention.
- a power distribution device 5 that causes communication failure is installed between the power distribution lines 1 and 2 and the power distribution lines 3 and 4.
- the distribution equipment 5 is a distribution board, pole transformer, capacitor bank, and the like.
- the signal binos device shown in Fig. 1 bypasses the distribution device 5 and connects the distribution lines 1 and 2 on one end and the distribution lines 3 and 4 on the other end at high frequency to form a communication path for high-frequency signals. It is configured to
- the split cores 6a and 6b are sandwiched between the distribution lines 1 and 2 on one end side of the distribution device 5 and are installed on the distribution lines 3 and 4 on the other end side of the distribution device 5, respectively.
- the split cores 7a and 7b are sandwiched and installed, and the cores 6a and 6b and the cores 7a and 7b are connected by cables 10 that pass through the respective cores.
- the cores 6a, 6b, 7a, and 7b function as transformers, respectively.
- a capacitor 9a is installed between the connection ends of the distribution device 5 and the distribution lines 1 and 2
- a capacitor 9b is installed between the connection ends of the distribution device 5 and the distribution lines 3 and 4.
- one of the two communication lines at one end of the cable 10 is sandwiched between the core 6a with its tip protruding, and the other is sandwiched between the core 6b with its tip protruding.
- a capacitor 15 is connected between the two communication lines at the entrance side of the cores 6a and 6b, and the ends of the two communication lines protruding from the cores 6a and 6b are connected via the capacitor 17.
- one of the two communication lines at the other end of the cable 10 is sandwiched between the core 7a with its tip protruding and the other is sandwiched between the core 7b with its tip protruding.
- the capacitor 16 is connected between the two communication lines at the entrance side of the cores 7a and 7b, and the ends of the two communication lines protruding from the cores 7a and 7b are connected via the capacitor 18.
- the circuit configuration of the signal binos device shown in FIG. 1 is as shown in FIG. In Fig. 2, at one end of the distribution device 5, the other end of the distribution line 21 with one end connected to the outside is The one end of the distribution line 23 is connected to one end of the transformer Tl formed by the core 6 a via one input / output side wire, and the other end of the distribution line 23 is connected to the connection point A 1 on one end side of the distribution device 5.
- the above is the relationship between the distribution line 1 and the core 6a shown in FIG.
- the other end of the distribution line 22 having one end connected to the outside is connected to one end of the distribution line 24 via one input / output side wire of the transformer T2 formed by the core 6b.
- the other end is connected to a connection point A 2 on one end side of the distribution device 5.
- the above is the relationship between the distribution line 2 and the core 6b shown in FIG.
- the other end of the distribution line 27 connected to the outside is connected to the distribution line via one input / output side wire of the transformer T3 formed by the core 7a.
- the other end of the distribution line 25 is connected to the connection point B1 of the other end of the distribution device 5.
- the other end of the distribution line 28 having one end connected to the outside is connected to one end of the distribution line 26 via one input / output side wire of the transformer T4 formed by the core 7b.
- the other end is connected to a connection point B2 on the other end side of the distribution device 5.
- one end of the other input / output wiring is connected via a capacitor Cs 17 that is a capacitor 17, and the other end is connected via a capacitor Cs 15 that is a capacitor 15.
- one end of the other input / output line is connected via the capacitor Csl8 which is the capacitor 18, and the other end is connected via the capacitor Cs16 which is the capacitor 16.
- the cable 10 shown in FIG. 1 includes a communication line 10a that connects the other input / output side wires of the transformer T1 and the transformer T3, and the other input / output side wires of the transformer T2 and the transformer T4.
- the communication line 10b connects the other ends of the line.
- the characteristics of the transmission line TL10 formed by the communication lines 10a and 10b are determined by the characteristic impedance Z010, the transmission delay 10 per unit length, and the line length 110.
- one input / output side wire has a self-inductance L11 on the distribution line side, and the other input / output side wire has a self-inductance L12 on the cable side, and has a coupling coefficient k1.
- the transformer T2 has one input / output feeder that is It has an inductance L21, and the other input / output side wire has a cable side self-inductance L22 and has a coupling coefficient k2.
- one input / output cable has a self-inductance L31 on the distribution line side, and the other input / output cable has a self-inductance L32 on the cable side, and the coupling coefficient k3k4 is I have to.
- one input / output line has a self-inductance L41 on the distribution line side, and the other input / output side line has a self-inductance L42 on the cable side, and the coupling coefficient k4 is I have to.
- the above is the relationship among the cores 6a and 6b, the cable 10, the cores 7a and 7b, the capacitor 17, the capacitor 15, the capacitor 18, and the capacitor 16 shown in FIG. 1 is connected between the connection point A1 on one end side of the power distribution device 5 and the connection point A2. Further, the capacitor C2 which is the capacitor 9b shown in FIG. 1 is connected between the connection point B1 and the connection point B2 on the other end side of the power distribution device 5.
- a high-frequency signal for power line communication is injected into one end of the distribution lines 21 and 22, and the high-frequency signal is extracted from the transformers Tl and T2 and injected into the transformers T3 and T4 via the communication lines 10a and 10b.
- a signal bypass method is described.
- a power line communication signal which is a high-frequency signal, is superimposed in addition to power at a commercial frequency. Only the high-frequency signal is extracted to the communication lines 10a and 10b by the transformers Tl and T2. The extracted high-frequency signal is transmitted to one input / output line of transformers T3 and T4 via communication lines 10a and 10b, and 27 and 28 distribution lines are injected from the other input / output line of transformers T3 and T4. .
- the capacitor C1 installed between the connection point A1 and the connection point A2 of the power distribution device 5 has the following two functions.
- the first function is to reduce the high frequency impedance between the connection point A1 and the connection point A2, thereby reducing the influence of the loss characteristic of the power distribution device 5 in the high frequency band used by the high frequency signal. It is to make it invisible at the point where it is taken out.
- the distribution equipment 5 includes a distribution board, a pole transformer, a capacitor bank, and the like. Each has their own loss characteristics. In this case, connect capacitor C1 to the connection point of power distribution device 5.
- the connection point A1 and connection point A2 are short-circuited at high frequencies, so that the loss characteristics of the distribution device 5 cannot be seen at the high-frequency extraction point. That is, the transformers Tl and T2 can extract high-frequency signals from the distribution lines 21 and 22 and send them to the communication lines 10a and 10b without being affected by the characteristics of the distribution device 5.
- the second function is to increase the extraction efficiency of high-frequency signals by the transformers Tl and T2.
- the transformer T1 generates a potential difference between the distribution line 21 and the distribution line 23 by an impedance due to its inductance.
- a potential difference corresponding to the impedance due to the inductance is generated between the transformer T2 distribution line 22 and the distribution line 24.
- the voltage value of the high-frequency signal from distribution line 21 and distribution line 22 is the difference between the potential difference generated in transformer T1, the potential difference generated in transformer T2, and the connection points A1 and A2 of distribution device 5. They are distributed according to the ratio of the potential difference between them. This is when the potential difference generated in each of the transformers Tl and T2 is minimized, that is, when the impedance between the connection point A1 and the connection point A2 becomes the outlet.
- the potential difference generated in each of the transformers Tl and T2 can be maximized.
- the transformers Tl and T2 can increase the efficiency of extracting high-frequency signals from the distribution lines 21 and 22.
- the capacitor C2 installed between the connection point B1 and the connection point B2 of the power distribution device 5 has the following two functions.
- the first function is to inject the high-frequency signal by affecting the loss characteristics of the distribution device 5 in the high-frequency band used by the high-frequency signal by reducing the high-frequency impedance between the connection point B1 and the connection point B2. It is to make it invisible at the point where you do it.
- the distribution equipment 5 includes a distribution board, a pole transformer, and a capacitor bank. Each has their own loss characteristics. In this case, by installing the capacitor C2 between the connection point B1 and the connection point B2 of the power distribution device, the connection point B1 and the connection point B2 are short-circuited.
- the loss characteristics of distribution device 5 disappear.
- the transformers T3 and T4 can take out high-frequency signals from the communication lines 10a and 10b and pour them into the distribution lines 25 and 27 without being affected by the characteristics of the distribution device 5.
- the second function is to increase the efficiency with which the transformers T3 and T4 force also inject high-frequency signals into the distribution lines 25 and 27.
- the transformer T3 generates a potential difference between the distribution line 25 and the distribution line 27 by the impedance due to the inductance.
- a potential difference corresponding to the impedance due to the inductance is generated between the transformer T4 distribution line 26 and the distribution line 27.
- the potential difference generated at the transformer T3 and the potential difference generated at the transformer T4 are the potential difference between the connection point B1 and the connection point B2 of the distribution device 5 and the receiving side device connected to the distribution lines 27 and 28. It is distributed according to the ratio of the potential difference due to the terminal resistance of the device.
- the potential difference due to the terminating resistance of the receiving device is the largest when the potential difference between connection point B1 and connection point B2 of the distribution device is minimized, that is, the impedance between connection point B1 and connection point B2. This is when the process becomes zero. Therefore, by connecting the capacitor C2 between the connection point B1 and the connection point B2 to make the high frequency short-circuited, the efficiency of injecting high frequency signals from the transformers T3 and T4 into the distribution lines 25 and 27 can be increased. it can.
- the capacitor C1 installed between the connection point A1 and the connection point A2 of the power distribution device 5 forms an LC low-pass filter together with the transformers Tl and T2.
- the inductance values of the transformers Tl and T2 are set so that the cutoff frequency of this LC low-pass filter is higher than the commercial frequency and lower than the frequency of the high-frequency signal.
- the capacitance value of capacitor C1 must be set appropriately.
- the capacitor C2 installed between the connection point B1 and the connection point B2 of the power distribution device 5 constitutes an LC low-pass filter together with the transformers T3 and T4.
- the inductance value of the transformers T3 and T4 and the capacitor so that the cutoff frequency of this LC low-pass filter is higher than the commercial frequency and lower than the frequency of the high-frequency signal. It is necessary to set the capacity value of C2 appropriately.
- Fig. 3-1 is an equivalent circuit (part 1) that can also derive the equivalent circuit force shown in Fig. 2.
- Figure 3-2 shows an equivalent circuit (part 2) that can also derive the equivalent circuit force shown in Figure 2.
- a high-pass filter (HPF) including a mutual inductance k * 2 L and a capacitor Cs is formed on the left side of the power distribution device 5.
- a low-pass filter (LPF) is constructed with two elements of leakage inductance (1 k) * 2L and capacitor Cp.
- HPF high-pass filter
- HPF high-pass filter
- a low-pass filter (LPF) consisting of two elements of leakage inductance (1 k) * 2L and capacitor Cp is configured.
- FIG. 4 is a characteristic diagram (part 1) showing an example of the loss characteristic of the signal bypass device shown in FIG. Figure 4 shows the effect of capacitor Cs in the absence of capacitor Cp. Therefore, in Fig. 4, the horizontal axis is the force, which is the frequency, and the vertical axis is the loss with or without the capacitor Cs when the capacitor Cp is not present.
- the curve (a) indicated by the broken line indicates that the capacitor Cs is not present, that is, the capacitors Csl7 and Csl8 are not present, and the corresponding ends of the input / output wires are directly connected. It shows the loss characteristics when In this case, capacitor Cp does not exist either. On the low-frequency side of the loss characteristic (a), the loss increases mainly due to the lack of reactance of the mutual inductance k * 2L.
- curves (b), (c), and (d) shown by solid lines show the loss characteristics when the value of the added capacitor Cs is changed.
- loss characteristic (b) is a characteristic when the capacitor Cs value is large
- loss characteristic (c) is a characteristic when the capacitor Cs value is an appropriate value
- loss characteristic (d) is a characteristic when the capacitor Cs value is It is a characteristic when it is small.
- the loss characteristic particularly on the low frequency side is Compared with the case where the capacitor Cs does not exist, it changes according to the capacitor Cs value. Since this capacitor Cs and one element of mutual inductance k * 2L form a high-pass filter (HPF), the cutoff frequency of the high-pass filter and the holding at the end of the passband are determined according to the value of the capacitor Cs. The steepness of the upper force ⁇ and the steepness of the loss band change. Therefore, it is necessary to select an appropriate capacitor Cs value that reduces the loss most in the desired frequency band.
- HPF high-pass filter
- FIG. 5 is a characteristic diagram showing an example of the loss characteristic of the signal bypass device shown in FIG.
- Figure 5 shows the effect of capacitor Cp in the absence of capacitor Cs. Therefore, in Fig. 5, the horizontal axis is the force that is the frequency, and the vertical axis is the loss with and without the capacitor Cp when the capacitor Cs is not present.
- a curve (e) indicated by a broken line indicates a loss characteristic when the capacitor Cp is not present, that is, when the capacitors Cpl5 and Cpl6 are not present. In this case, the capacitor Cs also exists and is in a state.
- the curves (f), (g), and (h) shown by solid lines show the loss characteristics when the value of the added capacitor Cp is changed.
- the loss characteristic (f) is the characteristic when the capacitor Cp value is large
- the loss characteristic (g) is the characteristic when the capacitor Cp value is an appropriate value
- the loss characteristic (h) is the capacitor Cp value force. This is a characteristic when S is small.
- the low-pass filter is formed by the capacitor Cp and the two elements of leakage inductance (1 k) * 2L, so the cutoff frequency of the low-pass filter depends on the value of the capacitor Cp.
- the steepness of lifting at the end of the pass band and the steepness of the loss band change. Therefore, the appropriate capacitor Cp value that reduces the loss most in the desired frequency band is selected.
- FIG. 6 is a characteristic diagram showing an example of the loss characteristic of the signal bypass device shown in FIG.
- Figure 6 shows the effect when both capacitor Cs and capacitor Cp are present. Therefore, in Fig. 6, the horizontal axis is the force, which is the frequency, and the vertical axis is the loss with and without the capacitors Cs and Cp.
- a curve (i) indicated by a broken line is a loss characteristic when neither of the capacitors Cs and Cp exists.
- the solid curve (j) shows the loss characteristics when capacitors Cs and Cp adjusted to the optimum values shown in Figs. 4 and 5 are added. As shown in FIG. 6, when capacitors Cs and Cp adjusted to the optimum values are added in a desired frequency band, it can be understood that the loss can be reduced more than when both capacitors Cs and Cp are not present.
- the high-frequency signal of the power line communication injected and transmitted to the distribution lines 21 and 22 is extracted by the transformers Tl and T2, and is transmitted by the transformers T3 and T4 via the communication lines 10a and 10b. Can be injected into distribution lines 27 and 28.
- the high-frequency signal of power line communication that has been injected and transmitted to the distribution lines 27 and 28 is extracted by the transformers T3 and T4, and the distribution lines 21 and 22 are transmitted by the transformers Tl and T2 via the communication lines 10a and 10b. Injecting the liquid into the pipe also has a symmetric configuration with the power distribution device 5 as the center, and therefore can be performed in the same manner as described above.
- a split-type core functioning as a transformer is provided on both sides of the distribution device.
- Each cable is installed and connected to a power distribution line, and a capacitor is installed between the connection ends of the distribution device and the distribution line, so that it is not affected by the loss characteristics of the distribution device in the frequency band of high-frequency signals.
- the high frequency signal can be bypassed.
- the capacitor installed between the connection ends of the distribution equipment and the distribution line can increase the extraction efficiency and the injection efficiency of the high-frequency signal by the core functioning as a transformer.
- the capacitors adjusted to appropriate values are installed in series and in parallel on the cable side in the core functioning as a transformer, loss characteristics in a desired frequency band can be reduced. By using such a capacitor, the following beneficial effects can be obtained.
- FIG. 7 is a diagram showing a device arrangement of the signal bino device according to Embodiment 2 of the present invention.
- FIG. 8 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- constituent elements that are the same as or equivalent to those shown in the first embodiment (FIGS. 1 and 2) are assigned the same reference numerals.
- the description will focus on the parts related to the second embodiment.
- capacitors 17a and 17b are intervened in the two signal lines at the input end of the cable 10 entering the cores 6a and 6b.
- the capacitor 18 in the configuration shown in FIG. 1 (Embodiment 1) is deleted, and the outgoing ends of the two communication lines of the cable 10 that have passed through the cores 7a and 7b are directly connected.
- Capacitors 18a and 18b are interposed in two signal lines at the input end of the cable 10 entering 7a and 7b.
- the circuit configuration of the signal binos device shown in FIG. 7 is as shown in FIG. That is, in FIG. 8, in transformer T1 and transformer T2, one end of the other input / output feeder is directly connected, and the other end communicates via capacitors Cs 17a and Cs 17b corresponding to capacitors 17a and 17b. Connected to lines 10a and 10b. In the transformer T3 and transformer T4, one end of the other input / output cable is directly connected, and the other end is connected to the communication lines 10a and 10b via the capacitors Csl8a and Csl8b corresponding to the capacitors 18a and 18b. Yes.
- Embodiment 2 corresponds to the arrangement position of the capacitors Csl7 and Csl8 in Embodiment 1 changed to the opposite side to the other input / output line of the transformers Tl and T2 and the transformers T3 and T4.
- a method of selecting the capacitors Csl7a and Cs17b and the capacitors Csl8a and Csl8b will be described.
- FIG. 9 is a diagram showing a device arrangement of the signal bino device according to Embodiment 3 of the present invention.
- FIG. 10 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- components that are the same as or similar to the components shown in the second embodiment are given the same reference numerals.
- the description will focus on the parts related to the third embodiment.
- capacitors 27a, 27b and 25a for cable 31 and capacitors 27c, 27d for cable 32 are provided instead of capacitors 17a, 17b and canon 15 in the configuration shown in FIG. 7 (Embodiment 2).
- capacitors 27a, 27b and 25a for cable 31 and capacitors 27c, 27d for cable 32 are provided.
- a capacitor 25b is connected between the two lines before the two communication lines constituting the cable 31 enter the core 6a.
- the front ends of the two communication lines constituting the cable 31 are connected via capacitors 27a and 27b to form a loop and are passed through the core 6a.
- the capacitor 25b is connected between the two communication lines constituting the cable 32 just before entering the core 6b.
- the ends of the two communication lines constituting the cable 32 are connected via capacitors 27c and 27d to form a loop and are passed through the core 6b.
- capacitors 28a, 28b and Canon 26a for cable 41 are used instead of capacitors 18a, 18b and capacitor 16 in the configuration shown in FIG. 7 (Embodiment 2).
- capacitors 28c and 28d and a capacitor 26b for the cable 42 are provided.
- the capacitor 26a is connected between the two communication lines composing the cable 41 before entering the core 7a.
- the tip ends of the two communication lines constituting the cable 41 are connected via capacitors 28a and 28b to form a loop and are passed through the core 7a.
- the capacitor 26b is connected between the two communication lines constituting the cable 42 before entering the core 7b.
- the front ends of the two communication lines constituting the cable 42 are connected via capacitors 28c and 28d to form a loop and are passed through the core 7b.
- circuit configuration of the signal binos device shown in FIG. 9 is as shown in FIG.
- the cable 20 shown in FIG. 9 is composed of a communication line 20a and a communication line 20b.
- the characteristics of the transmission line TL20 formed by the communication lines 20a and 20b are determined by the characteristic impedance Z020, the transmission delay ⁇ 20 per unit length, and the line length 120.
- the cable 31 shown in FIG. 9 is composed of communication lines 31a and 31b.
- the characteristics of the transmission line TL31 formed by the communication lines 31a and 31b are determined by the characteristic impedance Z031, the transmission delay ⁇ 31 per unit length, and the line length 131.
- the cable 32 shown in FIG. 9 is composed of a communication line 32a and a communication line 32b.
- the characteristics of the transmission line TL32 formed by the communication lines 32a and 32b are determined by the characteristic impedance Z032, the transmission delay ⁇ 32 per unit length, and the line length 132.
- the cable 41 shown in FIG. 9 is configured by a communication line 41a and a communication line 41b.
- the characteristics of the transmission line TL41 formed by the communication lines 41a and 4 lb are determined by the characteristic impedance Z041, the transmission delay ⁇ 41 per unit length, and the line length 141.
- the cable 42 shown in FIG. 9 is composed of a communication line 42a and a communication line 42b. Note that the characteristics of the transmission line TL42 formed by the communication lines 42a and 42b are determined by the characteristic impedance Z042, the transmission delay 42 per unit length, and the line length 142.
- One end of the transmission line TL20 is bifurcated into transmission lines TL31 and TL32.
- a capacitor Cp25a which is a capacitor 25a
- each line is connected to the corresponding end of the other input / output line of the transformer T1 via the capacitors Cs27a, Cs27b, which are the capacitors 27a, 27b.
- a capacitor Cp25b which is a capacitor 25b
- each line is a capacitor having capacitors 27c, 27d. It is connected to the corresponding end of the other input / output line of the transformer T2 via the capacitors Cs27c and Cs27d.
- the other end side of the transmission line TL20 is branched into two transmission lines TL41 and TL42.
- a capacitor Cp26a which is a capacitor 26a
- each line is connected to a corresponding end of the other input / output wiring of the transformer T3 via the capacitors Ca28a, Cs28b.
- a capacitor Cp26b which is a capacitor 26b
- each line passes through capacitors Cs28c, Cs28d, which are capacitors 28c, 28d. Connected to the part.
- both ends of the transmission line formed by the cable 10 in the first and second embodiments are branched into two, and a transmission line is provided for each of the transformers T1, T2, T3, and T4.
- the capacitor Csl7a, Csl7b and the capacitor Cp15 in 2 are arranged for each transformer Tl, T2, and the capacitor Csl8a, Cs18b and the capacitor Cp16 are arranged for each transformer T3, ⁇ 4.
- the characteristic values of the central transmission line TL20, the branch transmission lines TL31 and TL32 at one end thereof, and the branch transmission lines TL41 and TL42 at the other end are expressed as follows. Set as follows.
- characteristic impedance ⁇ 020 ⁇ 0
- transmission delay per unit length ⁇ 20 ⁇
- the circuit shown in FIG. 10 obtained in this way is also equivalent to the circuit shown in FIG. 3-2. Therefore, the loss characteristics of the signal binos device according to the third embodiment shown in FIGS. 9 and 10 are the same as those of the signal bypass device according to the first embodiment shown in FIGS. The same effect as in Form 1 can be obtained.
- FIG. 11 is a diagram showing an equipment layout of the signal bypass device according to Embodiment 4 of the present invention.
- FIG. 12 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- constituent elements that are the same as or equivalent to those shown in the third embodiment (FIGS. 9 and 10) are assigned the same reference numerals.
- the description will focus on the part related to the fourth embodiment.
- the cable 20 As shown in FIG. 11, in the signal bypass device according to the fourth embodiment, the cable 20, the cable 31, the cable 32, the cable 41, and the cable 42 in the configuration shown in FIG. 9 (the third embodiment). Instead, a cable 51 and a cable 52 are provided. Cable 51 corresponds to the connection of cable 31, cable 20 and cable 41 shown in FIG. 9 (Embodiment 3), and cable 52 is cable 32 shown in FIG. 9 (Embodiment 3). Compatible with cable 20 and cable 42 connected.
- the circuit configuration of the signal binos device shown in FIG. 11 is as shown in FIG.
- the cable 51 shown in FIG. 11 is composed of a communication line 5 la and a communication line 5 lb.
- the characteristics of the transmission line TL51 formed by the communication lines 51a and 5 lb are determined by the characteristic impedance Z051, the transmission delay ⁇ 51 per unit length, and the line length 151.
- the cable 52 shown in FIG. 11 includes a communication line 52a and a communication line 52b.
- the characteristics of the transmission line TL52 formed by the communication lines 52a and 52b are determined by the characteristic impedance Z052, the transmission delay per unit length 52, and the line length 152.
- the transmission line that bypasses the power distribution device 5 that is a communication obstacle device in Embodiment 3 is equivalent to one that is made independent for each transformer pair that faces the communication obstacle device.
- the characteristic values of each independent transmission line will be described.
- transmission line TL51 corresponds to the connection of transmission line TL31, transmission line TL20, and transmission line TL41 shown in FIG. 10 (Embodiment 3), and transmission line TL52 is shown in FIG. This corresponds to a connection of the transmission line TL32, the transmission line TL20, and the transmission line TL42 shown in the third embodiment.
- FIG. 13 is a diagram showing an equipment layout of the signal bino device according to Embodiment 5 of the present invention.
- FIG. 14 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- components that are the same as or equivalent to the components shown in the second embodiment are assigned the same reference numerals.
- the description will focus on the parts related to the fifth embodiment.
- capacitors 15 and 16 in the configuration shown in FIG. 7 are deleted, and one end of cable 10 And the capacitors 17a and 17b, the cable 70 is inserted, and the cable 80 is inserted between the other end of the cable 10 and the capacitors 18a and 18b.
- circuit configuration of the signal binos device shown in FIG. 13 is as shown in FIG.
- the cable 70 shown in FIG. 13 is composed of a communication line 70a and a communication line 70b.
- the characteristics of the transmission line TL70 formed by the communication lines 70a and 70b are determined by the characteristic impedance Z070, the transmission delay ⁇ 70 per unit length, and the line length 170.
- the cable 80 shown in FIG. 13 is composed of a communication line 80a and a communication line 80b.
- the characteristics of the transmission line TL80 formed by the communication lines 80a and 80b are determined by the characteristic impedance Z080, the transmission delay 80 per unit length, and the line length 180.
- Embodiment 5 corresponds to Embodiment 2 in which transmission lines in place of the capacitors between the lines are provided at both ends of the transmission line, here each transmission line in place of the capacitors between the lines is used. The characteristic value of will be described.
- the capacitor Cp 15 is realized by the transmission line TL70
- the capacitor Cp 16 is realized by the transmission line TL80.
- the transmission line TL70 and the transmission line TL80 generate not only capacitance but also inductance, so the signal according to the fifth embodiment shown in Figs.
- the loss characteristic of the bypass device is not the same as that of the signal bypass device according to the first embodiment shown in FIGS. 1 and 2, close loss characteristics can be obtained. Therefore, the same effect as in the first embodiment can be obtained.
- FIG. 15 is a diagram showing an equipment layout of the signal bino device according to Embodiment 6 of the present invention.
- FIG. 16 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- constituent elements that are the same as or equivalent to those shown in the third embodiment (FIGS. 9 and 10) are given the same reference numerals.
- the description will be focused on the portion related to the sixth embodiment.
- capacitors 25a and 25b in the configuration shown in FIG. 9 are deleted, and cables 31 and 32 are connected. Instead, cables 101 and 102 are provided with force S.
- Capacitors 111 and 112 are provided in place of capes 41 and 42, while capacitors 26a and 26b are deleted.
- the circuit configuration of the signal bypass device shown in FIG. 15 is as shown in FIG.
- the cable 101 shown in FIG. 15 includes a communication line 101a and a communication line 101b. It is supposed to be made.
- the characteristics of the transmission line TL101 formed by the communication lines 101a and 101b are determined by the characteristic impedance ZO101, the transmission delay ⁇ 101 per unit length, and the line length 1101.
- the cable 102 shown in FIG. 15 includes a communication line 102a and a communication line 102b.
- the characteristics of the transmission line TL102 formed by the communication lines 102a and 102b are determined by the characteristic impedance Z0102, the transmission delay ⁇ 102 per unit length, and the line length 1102.
- the cable 111 shown in FIG. 15 is composed of a communication line 11 la and a communication line 11 lb.
- the characteristics of the transmission line TL111 formed by the communication lines 11 la and 11 lb are determined by the characteristic impedance Z0111, the transmission delay ⁇ 111 per unit length, and the line length 1111.
- the cable 112 shown in FIG. 15 is composed of a communication line 112a and a communication line 112b.
- the characteristics of the transmission line TL112 formed by the communication lines 112a and 112b are determined by the characteristic impedance Z0112, the transmission delay ⁇ 112 per unit length, and the line length 1112.
- Embodiment 6 corresponds to the configuration in Embodiment 3 in which each branch transmission line at both ends of the central transmission line is configured to replace the capacitor provided between the lines.
- the characteristic values of each branch transmission line that replaces the capacitor will be explained.
- the capacitor Cp25a is realized by the transmission line TL101
- the capacitor Cp25b is realized by the transmission line TL102
- Capacitor Cp26a is realized by transmission line TL111
- capacitor Cp26b is realized by transmission line TL112.
- Transmission lines TL101, TL 102, TL111, TL112 are realized by Canon CplOl, Cpl02, Cpl l l, Cpl l2 when the length of the transmission line is short relative to the signal wavelength.
- the transmission line TL101 constants (1101, ⁇ 101, Z0101) and the transmission line TL102 constants (1102) are as close to 2 * Cp as possible.
- ⁇ 102, 20102 The values of the transmission line 111 constants (1111, ⁇ 111, Z0111) and the transmission line TL1 12 constants (1112, ⁇ 112, Z0112) may be adjusted.
- the transmission lines TL101 and TL102 and the transmission lines TL111 and TL112 generate not only capacitance but also inductance.
- the loss characteristics of the signal bypass device according to the sixth embodiment are not the same as those of the signal bypass device according to the first embodiment shown in FIGS. 1 and 2, close loss characteristics can be obtained. Therefore, the same effect as in the first embodiment can be obtained.
- FIG. 17 is a diagram showing an equipment layout of the signal bino device according to Embodiment 7 of the present invention.
- FIG. 18 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- constituent elements that are the same as or equivalent to those shown in the fourth embodiment (FIGS. 11 and 12) are given the same reference numerals.
- the description will focus on the parts related to the seventh embodiment.
- the capacitors 25a and 26a in the configuration shown in FIG. 11 are deleted, and one end side of the cable 51 and the capacitor Cable 61 is inserted between 27a and 27b, and cable 51 A cable 91 is inserted between the other end of the capacitor 28a and the capacitors 28a and 28b.
- capacitors 25b and 26b in the configuration shown in FIG. 11 are deleted, and cable 62 is inserted between one end of cable 52 and capacitors 27c and 27d.
- a cable 92 is inserted between the other end of the cable 52 and the capacitors 28c and 28d.
- circuit configuration of the signal binos device shown in FIG. 17 is as shown in FIG.
- the cable 61 shown in FIG. 17 is composed of a communication line 6 la and a communication line 6 lb.
- the characteristics of the transmission line TL61 formed by the communication lines 61a and 6 lb are determined by the characteristic impedance Z061, the transmission delay ⁇ 61 per unit length, and the line length 161.
- the cable 91 shown in FIG. 13 is composed of a communication line 91a and a communication line 91b.
- the characteristics of the transmission line TL91 formed by the communication lines 91a and 91b are determined by the characteristic impedance Z091, the transmission delay ⁇ 91 per unit length, and the line length 191.
- the cable 62 shown in FIG. 17 includes a communication line 62a and a communication line 62b.
- the characteristics of the transmission line TL62 formed by the communication lines 62a and 62b are determined by the characteristic impedance Z062, the transmission delay ⁇ 62 per unit length, and the line length 162.
- the cable 92 shown in FIG. 13 is composed of a communication line 92a and a communication line 92b.
- the characteristics of the transmission line TL92 formed by the communication lines 92a and 92b are determined by the characteristic impedance Z092, the transmission delay per unit length 92, and the line length 192.
- Embodiment 7 corresponds to Embodiment 4 in which transmission lines in place of capacitors between the lines are provided at both ends of each independent transmission line.
- the characteristic values of the insertion independent transmission line are explained.
- the capacitor Cp25a is realized by the transmission line TL61
- the capacitor Cp26a is realized by the transmission line TL91.
- Capacitor Cp25b is realized with transmission line TL62
- capacitor Cp26b is realized with transmission line TL92.
- the transmission lines TL61, TL62, TL91, and ⁇ L92 generate not only capacitance but also inductance, so this embodiment shown in FIGS. 17 and 18 is used.
- the loss characteristic of the signal bypass device according to 7 is not the same as that of the signal bypass device according to the first embodiment shown in FIGS. 1 and 2, close loss characteristics can be obtained. Therefore, the same effect as in the first embodiment can be obtained.
- FIG. 19 is a diagram showing an equipment layout of the signal bino device according to Embodiment 8 of the present invention.
- FIG. 20 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- constituent elements that are the same as or equivalent to those shown in the fourth embodiment (FIGS. 11 and 12) are given the same reference numerals.
- the description will focus on the parts related to the seventh embodiment.
- the core 6b and the distribution line 4 installed in the distribution line 2 in the configuration shown in FIG. 11 (Embodiment 4) are installed.
- the core 7b, Cape Nore 52, Canonita 25b, 26b, 27c, 27d, 28c and 28d force S have been removed.
- the circuit configuration of the signal binos device shown in FIG. 19 is as shown in FIG. 20, with the transformers Tl and T3 facing each other across the distribution device 5 and the other input / output terminals of the transformers Tl and T3. It is composed of capacitors Cs27a, Cs27b, Cp25a, transmission line TL51, capacitors Cp26a, Cs28a, Cs28b arranged between the lines. Even in such a configuration, transmission / reception of the communication signal between the distribution line 1 and the distribution line 2 while bypassing the distribution device 5 is possible.
- FIG. 21 is a diagram showing an equipment layout of the signal bino device according to Embodiment 9 of the present invention.
- FIG. 22 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- constituent elements that are the same as or equivalent to those shown in the seventh embodiment (FIGS. 17 and 18) are assigned the same reference numerals.
- the description will be focused on the portion related to the ninth embodiment.
- the core 6b which is installed in the distribution line 2 in the configuration shown in FIG. 17 (Embodiment 7), is installed in the distribution line 4.
- Now 3a 7b, Cape Nore 52, Cape Nore 62, Cape Nore 92, Canonita 27c, 27d, 28c and 28d have been deleted.
- the circuit configuration of the signal binos device shown in FIG. 21 is, as shown in FIG. 20, the transformers Tl and T3 facing each other across the distribution device 5 and the other input / output terminals of the transformers Tl and T3. It is composed of capacitors Cs27a and Cs27b, transmission line TL61, transmission line TL51, transmission line TL91, and capacitors Cs28a and Cs28b arranged between the lines. Even in such a configuration, transmission / reception of the communication signal between the distribution line 1 and the distribution line 2 while bypassing the distribution device 5 is possible.
- FIG. 23 is a diagram showing an equipment layout of the signal bino device according to Embodiment 10 of the present invention.
- FIG. 24 is an equivalent circuit diagram showing a circuit configuration of the signal bypass device shown in FIG.
- this embodiment 1
- capacitors 9a and 9b in the configuration shown in FIG. 1 are omitted. Therefore, the circuit configuration of the signal binos device shown in FIG. 23 is such that the capacitor C1 between the connection points A1 and A2 and the capacitor C2 between the connection points Bl and b2 shown in FIG. 2 do not exist as shown in FIG. It becomes.
- Capacitor 9a (C1) and Capacitor 9b (C2)
- the effects of capacitors 9a and 9b have been described in the first embodiment.
- the capacitor 9a depends on the capacitance component included in the distribution device 5 and the capacitance component between the lines from the cores 6a and 6b to the distribution device 5 or between the cores 7a and 7b and the distribution device 5.
- 9b may bypass the signal.
- the capacitors 9a and 9b are installed, the loss characteristic of the signal bypass device is greatly reduced, and the effect of reducing the loss characteristic of the signal distribution device 5 is also large.
- the power applied in the tenth embodiment is not limited to the force shown in the application example in the first embodiment, and is similarly applied to all the embodiments from the second embodiment to the ninth embodiment. Needless to say, this is possible.
- a high-pass filter is formed, and a capacitor for the effect of mainly reducing the low-frequency loss characteristic is installed in the cable, and a low-pass filter is formed.
- a capacitor is installed in the cable, mainly for the effect of reducing the loss characteristics of the middle and higher frequencies.
- a high-pass filter is formed to mainly reduce the loss characteristic on the low band side
- a low-pass filter is formed to mainly form the middle band.
- the communication device is a power line communication device, and the case where the communication device is applied to a distribution line as a communication path and a distribution device as a bypass target has been described as an example.
- the present invention is not limited to this.
- the communication device may be a device other than the power line communication device, and the communication path may be a so-called electric wire that is a metal wire other than the distribution line, or may be other than the distribution device as a bypass target.
- the signal bypass device is capable of bypassing and transmitting a communication failure device existing in the middle of a communication signal regardless of the model of the communication signal on the wire. Therefore, it is useful for transmitting high-frequency signals using any wire connected only by power line communication that transmits high-frequency signals.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2007506935A JP4633787B2 (ja) | 2005-03-07 | 2005-03-07 | 信号バイパス装置 |
PCT/JP2005/003895 WO2006095402A1 (ja) | 2005-03-07 | 2005-03-07 | 信号バイパス装置 |
US11/817,341 US20080152025A1 (en) | 2005-03-07 | 2005-03-07 | Signal Bypass Device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2005/003895 WO2006095402A1 (ja) | 2005-03-07 | 2005-03-07 | 信号バイパス装置 |
Publications (1)
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WO2006095402A1 true WO2006095402A1 (ja) | 2006-09-14 |
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PCT/JP2005/003895 WO2006095402A1 (ja) | 2005-03-07 | 2005-03-07 | 信号バイパス装置 |
Country Status (3)
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US (1) | US20080152025A1 (ja) |
JP (1) | JP4633787B2 (ja) |
WO (1) | WO2006095402A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2541768A1 (en) * | 2011-06-30 | 2013-01-02 | ABB Research Ltd. | Bypass for bypassing a high frequency power line communication signal |
CN102570613B (zh) * | 2012-01-31 | 2014-04-23 | 广东电网公司中山供电局 | 智能化旁路代路及代路恢复倒闸程序化操作的方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS50108328U (ja) * | 1974-02-13 | 1975-09-04 | ||
JPS5123016A (ja) * | 1974-08-20 | 1976-02-24 | Mitsubishi Electric Corp | Denryokusenryohansotsushinsochino shingochunyuhoshiki |
JPS6168542U (ja) * | 1984-10-05 | 1986-05-10 | ||
JPH08149053A (ja) * | 1994-11-16 | 1996-06-07 | Nippon Conlux Co Ltd | 電力線信号伝達装置 |
JP2003244039A (ja) * | 2002-02-20 | 2003-08-29 | Alps Electric Co Ltd | 配電盤及び該配電盤を用いた有線式通信ネットワークシステム |
JP2004032585A (ja) * | 2002-06-28 | 2004-01-29 | Toyo Commun Equip Co Ltd | 配電線搬送信号の入出力回路 |
JP2004297249A (ja) * | 2003-03-26 | 2004-10-21 | Matsushita Electric Ind Co Ltd | 異相線間カプラーとその装着方法、及び、異相線間のカップリング方法 |
JP2004356776A (ja) * | 2003-05-28 | 2004-12-16 | Mitsubishi Electric Corp | 非接触型信号注入装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5423016A (en) * | 1977-07-23 | 1979-02-21 | Pacific Metals Co Ltd | Method of producing austenitic stainless steel containing nickel |
JPH0629884A (ja) * | 1992-07-06 | 1994-02-04 | Nissin Electric Co Ltd | 高周波電力注入装置 |
JP2629132B2 (ja) * | 1994-06-30 | 1997-07-09 | オスカー電子株式会社 | 電力線通信ネットワークおよび電力線通信用カプラー |
-
2005
- 2005-03-07 US US11/817,341 patent/US20080152025A1/en not_active Abandoned
- 2005-03-07 JP JP2007506935A patent/JP4633787B2/ja not_active Expired - Fee Related
- 2005-03-07 WO PCT/JP2005/003895 patent/WO2006095402A1/ja not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50108328U (ja) * | 1974-02-13 | 1975-09-04 | ||
JPS5123016A (ja) * | 1974-08-20 | 1976-02-24 | Mitsubishi Electric Corp | Denryokusenryohansotsushinsochino shingochunyuhoshiki |
JPS6168542U (ja) * | 1984-10-05 | 1986-05-10 | ||
JPH08149053A (ja) * | 1994-11-16 | 1996-06-07 | Nippon Conlux Co Ltd | 電力線信号伝達装置 |
JP2003244039A (ja) * | 2002-02-20 | 2003-08-29 | Alps Electric Co Ltd | 配電盤及び該配電盤を用いた有線式通信ネットワークシステム |
JP2004032585A (ja) * | 2002-06-28 | 2004-01-29 | Toyo Commun Equip Co Ltd | 配電線搬送信号の入出力回路 |
JP2004297249A (ja) * | 2003-03-26 | 2004-10-21 | Matsushita Electric Ind Co Ltd | 異相線間カプラーとその装着方法、及び、異相線間のカップリング方法 |
JP2004356776A (ja) * | 2003-05-28 | 2004-12-16 | Mitsubishi Electric Corp | 非接触型信号注入装置 |
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JPWO2006095402A1 (ja) | 2008-08-14 |
JP4633787B2 (ja) | 2011-02-16 |
US20080152025A1 (en) | 2008-06-26 |
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