JP2011082602A - Dc power distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DC power distribution system capable of taking suitable measures when a newly connected terminal does not operate properly due to an effect that the receiving state of an electric signal supplied from a master unit is brought into an improper state when a terminal is newly connected to a paired line. <P>SOLUTION: When a DC device 5 is newly connected to a direct current supply line 22, a measuring part 61 of the DC device 5 measures an index value indicating the right and wrong of an operating state of the DC device 5 itself on the basis of a state of receiving an electric signal from a control unit 9. When the index value indicates the fault of the operating state of the DC device 5, a notifying part 62 of the DC device drives a LED 63 and a speaker 64 representing an error (lighting of a red LED and ringing of a beep sound). Thus, a user can understand that the cause by which the operation of the DC device 5 newly connected to the direct current supply line 22 cannot be properly performed results from deterioration in the receiving state in the DC device 5, and the user can take proper measures. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a DC power distribution system.

  Conventionally, a power distribution system has been known in which a terminal can be connected to a pair line connected to a base unit, power is supplied from the base unit to a terminal connected to the pair line, and the pair line is used as a communication line. (See Patent Document 1). It is also conceivable to apply such a power distribution system to a DC power distribution system.

JP 2007-31176 A (paragraphs [0020] to [0024], [0047] to [0050], [0055], [0056])

  By the way, in a DC power distribution system, when a terminal is newly connected to a pair line, due to the influence of the terminal already connected to the pair line, the electric signal supplied from the master unit at the newly connected terminal There is a possibility that the reception state becomes improper and the terminal does not operate properly. As described above, the quality of the operation state of the terminal is determined based on the reception state of the electrical signal supplied from the parent device at the newly connected terminal, and indicates the quality of the operation state of the terminal based on the reception state. Specific examples of the index value include an S / N ratio relating to a signal transmitted from the parent device to the newly connected terminal, and a voltage level at the terminal accompanying power supply from the parent device.

  Therefore, the following examples [1] and [2] can be considered as specific examples in which the reception state of the newly connected terminal is in an inappropriate state as described above. [1] The S / N ratio of the signal transmitted from the base unit to the newly connected terminal due to the operation and impedance of the terminal already connected to the pair line and the newly connected terminal is The value drops below a value that enables communication between the two. [2] Power is consumed in the terminal already connected to the pair line, and as a result, the voltage level in the newly connected terminal is reduced to a value less than the value at which the terminal can operate properly.

  In this way, when the reception state of the terminal newly connected to the pair line is in an inappropriate state and the terminal does not operate properly, this is due to the causes described in [1] and [2] above. It is difficult for the user to determine that it is a thing. For this reason, there is a high possibility that the user will mistakenly recognize that a failure has occurred despite the fact that the terminal is normal and cannot take appropriate measures against the inability to properly operate the terminal. .

  In Patent Document 1, when a terminal is newly connected to a paired line, a communication speed (throughput) at the time of communication called handshake performed between the terminal and the parent device is measured and measured. A technique is disclosed in which the determined communication speed and its reference value are determined, and either the green LED or the red LED provided in the terminal is turned on according to the determination result. In this case, a user who newly connects the terminal to the paired line can check the communication speed between the terminal and the base unit based on the lighting state of the LED in the terminal. The lighting of the LED is only for confirming the communication speed, and it is not possible to confirm the quality of the operating state of the terminal. Further, it is impossible to detect a case where the operation state of the existing terminal becomes defective due to the connection of the new terminal.

  Therefore, even if this technology is applied to the DC power distribution system, the user sees the lighting state of the LED of the terminal newly connected to the pair line, and the terminal is in accordance with [1] or [2] described above. It is difficult to understand that the device is not operating properly due to the cause, and it is highly likely that the terminal is misunderstood as having failed and appropriate measures cannot be taken.

  The present invention has been made in view of such circumstances, and its purpose is that when a terminal is newly connected to a paired line, the reception state of the electric signal supplied from the parent device is inappropriate. Accordingly, it is an object of the present invention to provide a DC power distribution system capable of taking appropriate measures when a newly connected terminal does not operate properly.

In the following, means for achieving the above object and its effects are described.
In order to achieve the above object, in the invention according to claim 1, a terminal can be connected to a pair line connected to a base unit, and power is supplied from the base unit to a terminal connected to the pair line, In the DC power distribution system using the pair line as a communication line, the terminal indicates whether or not its own operation state is good based on a reception state of an electric signal supplied from the master unit when connected to the pair line. Measuring means for measuring the value and notifying means for notifying the measurement result by the measuring means are provided.

  According to the above configuration, when a terminal is newly connected to a paired line, an index value indicating the quality of the operation state of the own device is measured based on the reception state of the electric signal from the parent device by the measuring means of the terminal. And the measurement result by such a measuring means is alert | reported by the alerting | reporting means of the said terminal. Therefore, when the reception state of the electric signal supplied from the master unit at the newly connected terminal is in an inappropriate state and the terminal does not operate properly due to this, the notification of the terminal is made. It is possible to notify the user by means. As a result, the user can understand that the reason why the terminal newly connected to the paired line cannot be properly operated is the reception state of the electric signal from the parent terminal of the terminal, and can take appropriate measures. It becomes possible.

According to a second aspect of the present invention, in the first aspect of the present invention, the measuring means measures an S / N ratio related to a signal transmitted from the parent device as the index value.
According to the above configuration, when a terminal is newly connected to the paired line, the S / N ratio of the signal transmitted from the parent device to the terminal is measured as the index value by the measuring means of the terminal, and such measurement is performed. The measurement result by the means is notified by the notification means of the terminal. Therefore, when a failure due to a decrease in the S / N ratio occurs in communication using a paired wire between the parent device and the newly connected terminal, the terminal does not operate properly. This can be notified to the user by the notification means of the terminal. As a result, the user can understand that the reason why the terminal newly connected to the pair line cannot be properly operated is the decrease in the S / N ratio, and can take appropriate measures.

According to a third aspect of the present invention, in the first aspect of the present invention, the measuring means measures a voltage level based on power feeding from the parent device as the index value.
According to the above configuration, when a terminal is newly connected to the paired line, the voltage level at the terminal accompanying the power supply from the parent device is measured as the index value by the measuring unit of the terminal, The measurement result is notified by the notification means of the terminal. Therefore, when the voltage level at the newly connected terminal is reduced due to the power supply from the master unit and the terminal does not operate properly, this is notified to the user by the notification means of the terminal. be able to. As a result, the user can understand that the cause of the failure to properly operate the terminal newly connected to the pair line is the decrease in the voltage level, and can take appropriate measures.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, when the terminal is newly connected to the paired line, the measuring unit uses the measuring unit to connect all terminals connected to the paired line. The index value is measured, and the notification means of the newly connected terminal is used to notify the measurement result of the index value at the terminal, and the measured index value indicates a malfunction in the operating state. The gist is to notify the measurement result of the index value at a terminal.

  According to the above configuration, when a new terminal is connected to the pair line, due to the influence of the impedance, power consumption, etc. of the terminal, the reception state of the electrical signal from the parent device at the terminal already connected to the pair line When the operating state becomes poor due to deterioration, this can be notified using the notification means of the newly connected terminal.

  In the invention according to claim 5, in the invention according to claim 4, the terminal connected to the pair line measures the index value by the measuring means based on an instruction from the base unit, and then the index value The measurement result is transmitted to the master unit. If there is a terminal that cannot receive the measurement result of the index value, the master unit indicates that the index value measured by the terminal indicates a poor operation state. The gist is that the notification means of the newly connected terminal is used to notify that fact.

  According to the above configuration, when a terminal is newly connected to the paired line, all the terminals connected to the paired line measure the index value by the measuring unit based on the instruction of the master unit, and the measurement result Is sent to the main unit. However, it is unavoidable that the impedance of the newly connected terminal affects the communication via the paired line, and the index value by the measuring means from the terminal already connected to the paired line toward the master unit Even if the measurement result is transmitted, the measurement result may not reach the parent device due to a communication failure caused by the above-described influence. In this case, if there is a terminal that cannot receive the measurement result of the index value by the master unit, the notification of the newly connected terminal is assumed that the index value measured by the terminal indicates a malfunction in the operating state. Since the notification is made using the means, the user who has confirmed that can take appropriate measures.

  According to a sixth aspect of the present invention, in the third aspect of the present invention, when the terminal is newly connected to the paired line, the measuring unit uses the measuring means to connect all the terminals connected to the paired line. The measurement of the index value is performed, and the measurement result of the index value in the terminal is notified using the notification unit of the newly connected terminal, and the measured index value is close to a poor operating state. The gist is to notify the recommended point of power supply addition using the notification means of the terminal shown.

  According to the above configuration, when a terminal is newly connected to the pair line, the voltage level at the terminal accompanying the power supply from the parent device by the measuring unit is the index value in all the terminals connected to the pair line. As measured. Then, in the newly connected terminal, the measurement result by the measuring means is notified. In addition, when a terminal is newly connected to a pair line, the voltage level of the terminal that has already been connected to the pair line decreases, and the voltage level indicates a state close to a malfunction in the terminal. The recommended point for adding power is notified using the notification means of the terminal. By notifying the recommended point for adding power supply, the user can easily confirm the point to which the power supply is to be added, and adding an appropriate power source in the vicinity of the terminal reporting the recommended point for adding power supply. Measures can be taken.

  According to a seventh aspect of the present invention, in the first aspect of the invention, when the terminal is newly connected to the paired line, the measuring unit uses the measuring unit to connect all the terminals connected to the paired line. The measurement of the index value is performed and the measurement result of the index value at the terminal is notified using the notification unit of the newly connected terminal, and the measured index value is a value indicating a malfunction in the operating state. The gist is to notify the recommended point of terminal connection using the notification means of the terminal showing a state with a margin.

  According to the above configuration, when a terminal is newly connected to the pair line, the operation state of the own apparatus is determined based on the reception state of the electric signal from the parent unit by the measuring unit in all the terminals connected to the pair line. An index value indicating pass / fail is measured. Then, in the newly connected terminal, the measurement result by the measuring means is notified. In addition, when a terminal is newly connected to the pair line, the index value measured based on the reception state of the electrical signal from the parent device is already in the operating state of the terminal in the terminal already connected to the pair line. When a state with a margin for the value indicating the defect is indicated, the terminal connection recommendation point is notified using the notification means of the terminal. By notifying the recommended point for terminal connection, the user can easily confirm a suitable point for connecting the terminal. Therefore, when a terminal is newly connected to the paired line, the reception state of the electric signal supplied from the master unit at the terminal becomes inadequate and the terminal does not operate properly. When notified by the notification means of the terminal, the user can take an appropriate measure of reconnecting the terminal to the vicinity of the terminal reporting the recommended terminal connection point.

  The gist of the invention according to claim 8 is that, in the invention according to claim 7, the notification means performs notification of the recommended terminal connection point by driving a display ringing unit facing the surface of the terminal.

According to the above configuration, since the recommended point for terminal connection is notified by driving the display ringing unit facing the terminal surface, it is possible to obtain an effect that the recommended point can be easily confirmed.
According to a ninth aspect of the present invention, in the eighth aspect of the invention, the notification means notifies the recommended point of the terminal connection by driving the display ringing unit, and the operation state of the measured index value. The gist is to change the degree of notification by the display ringing unit in accordance with the degree of margin for the value indicating the failure.

  According to the above configuration, when notification of the recommended point of terminal connection is performed by driving the display ringing unit facing the terminal surface, the degree of margin with respect to the value indicating the poor operation state of the measured index value, in other words, For example, the degree of notification by the display ringing unit varies depending on the degree of recommendation as a point of terminal connection. Therefore, it is possible to connect the terminal to a point suitable for the user in consideration of the degree of recommendation as a terminal connection point and taking into account the convenience of the terminal after connection to the paired line.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the whole electric power supply system of the house to which the power distribution system of 1st Embodiment is applied. Schematic which shows the structure of the power distribution system. The sequence diagram which shows the communication aspect between the DC apparatus and a control unit, when DC apparatus is newly connected with respect to a DC supply line. Schematic which shows the structure of the power distribution system of 2nd Embodiment. The sequence diagram which shows the communication aspect between the DC apparatus and a control unit, when DC apparatus is newly connected with respect to a DC supply line. Schematic which shows the structure of the power distribution system of 3rd Embodiment. The sequence diagram which shows the communication aspect between the DC apparatus and a control unit, when DC apparatus is newly connected with respect to a DC supply line. Schematic which shows the structure of the power distribution system of 4th Embodiment. The sequence diagram which shows the communication aspect between the DC apparatus and a control unit, when DC apparatus is newly connected with respect to a DC supply line. The flowchart which shows the process performed in the alerting | reporting part of DC apparatus connected with respect to the DC supply line when DC apparatus is newly connected with respect to the DC supply line. Schematic which shows the structure of the power distribution system of 5th Embodiment. The sequence diagram which shows the communication aspect between the DC apparatus and a control unit, when DC apparatus is newly connected with respect to a DC supply line. The flowchart which shows the process performed in the alerting | reporting part of DC apparatus connected with respect to the DC supply line when DC apparatus is newly connected with respect to the DC supply line. The sequence diagram which shows the other example of the communication aspect between DC apparatus in 1st Embodiment, and a control unit.

[First Embodiment]
Hereinafter, a first embodiment in which the present invention is applied to a power supply system such as a house will be described with reference to FIGS.

  As shown in FIG. 1, a house is provided with a power supply system 1 that supplies power to various devices (such as lighting devices, air conditioners, home appliances, and audiovisual devices) installed in the house. The power supply system 1 operates various devices using a commercial AC power source (AC power source) 2 for home use as power, and also supplies the power of the solar cell 3 generated by sunlight to the various devices as a power source. The power supply system 1 supplies power not only to the DC device 5 that operates by inputting a DC power supply (DC power supply) but also to the AC device 6 that operates by inputting an AC power supply (AC power supply).

  The power supply system 1 is provided with a control unit 7 and a DC distribution board (built-in DC breaker) 8 as a distribution board of the system 1. The power supply system 1 is provided with a control unit 9 and a relay unit 10 as devices for controlling the operation of the DC device 5 in the house.

  An AC distribution board 11 for branching an AC power supply is connected to the control unit 7 via an AC power line 12. The control unit 7 is connected to the commercial AC power source 2 through the AC distribution board 11 and is connected to the solar cell 3 through the DC system power line 13. The control unit 7 takes in AC power from the AC distribution board 11 and DC power from the solar cell 3 and converts these powers into predetermined DC power as a device power source. Then, the control unit 7 outputs the converted DC power to the DC distribution board 8 via the DC system power line 14 or outputs it to the storage battery 16 via the DC system power line 15 to store the same power. To do. The control unit 7 can not only take AC power from the AC distribution board 11 but also convert DC power of the solar cell 3 and the storage battery 16 to AC power and supply it to the AC distribution board 11. The control unit 7 exchanges data with the DC distribution board 8 via the signal line 17.

  The DC distribution board 8 is a kind of breaker that supports DC power. The DC distribution board 8 branches the DC power input from the control unit 7 and outputs the branched DC power to the control unit 9 via the DC power line 18 or relays via the DC power line 19. Or output to the unit 10. Further, the DC distribution board 8 exchanges data with the control unit 9 through the signal line 20 and exchanges data with the relay unit 10 through the signal line 21.

  A plurality of DC devices 5, 5... Are connected to the control unit 9. These DC devices 5 are connected to the control unit 9 via a DC supply line 22 that can carry both DC power and data by a pair of lines. The DC supply line 22 superimposes a communication signal for transmitting data by a high-frequency carrier wave on a DC voltage serving as a power source for the DC device, so-called power line carrier communication. Transport to. The control unit 9 acquires the DC power supply of the DC device 5 via the DC power line 18 and controls which DC device 5 based on the operation command obtained from the DC distribution board 8 via the signal line 20. Know what to do. Then, the control unit 9 controls the operation of the DC device 5 by outputting a DC voltage and an operation command to the instructed DC device 5 via the DC supply line 22.

  A switch 23 that is operated when switching the operation of the DC device 5 in the house is connected to the control unit 9 via a DC supply line 22. In addition, a sensor 24 that detects a radio wave transmitted from an infrared remote controller, for example, is connected to the control unit 9 via a DC supply line 22. Therefore, not only the operation instruction from the DC distribution board 8 but also the operation of the switch 23 and the detection of the sensor 24, a communication signal is sent to the DC supply line 22 to control the DC device 5.

  A plurality of DC devices 5, 5... Are connected to the relay unit 10 via individual DC power lines 25. The relay unit 10 acquires the DC power supply of the DC device 5 through the DC power line 19 and determines which DC device 5 is to be operated based on an operation command obtained from the DC distribution board 8 through the signal line 21. To grasp. The relay unit 10 controls the operation of the DC device 5 by turning on / off the power supply to the DC power line 25 with respect to the instructed DC device 5 using a built-in relay. In addition, a plurality of switches 26 for manually operating the DC device 5 are connected to the relay unit 10, and the DC power line 25 is turned on and off by the relay by operating the switch 26, thereby enabling the DC unit 5 to operate the DC unit 5. The device 5 is controlled.

  The DC distribution board 8 is connected to a DC outlet 27 built in a house in the form of a wall outlet or a floor outlet, for example, via a DC power line 28. If a plug (not shown) of a DC device is inserted into the DC outlet 27, DC power can be directly supplied to the device.

  Further, a power meter 29 capable of remotely metering the amount of use of the commercial AC power supply 2 is connected between the commercial AC power supply 2 and the AC distribution board 11. The power meter 29 is equipped with not only a function of remote meter reading of the amount of commercial power used, but also a function of power line carrier communication and wireless communication, for example. The power meter 29 transmits the meter reading result to an electric power company or the like via such power line carrier communication or wireless communication.

  The power supply system 1 is provided with a network system 30 that enables various devices in the home to be controlled by network communication. The network system 30 is provided with a home server 31 as a control unit of the system 30. The home server 31 is connected to a management server 32 outside the home via a network N such as the Internet, and is connected to a home device 34 via a signal line 33. The in-home server 31 operates using DC power acquired from the DC distribution board 8 via the DC power line 35 as a power source.

  A control box 36 that manages operation control of various devices in the home by network communication is connected to the home server 31 via a signal line 37. The control box 36 is connected to the control unit 7 and the DC distribution board 8 via the signal line 17 and can directly control the DC device 5 via the DC supply line 38. For example, a gas / water meter 39 capable of remotely metering the amount of gas used or the amount of water used is connected to the control box 36 and also connected to the operation panel 40 of the network system 30. The operation panel 40 is connected to a monitoring device 41 including, for example, a door phone slave, a sensor, and a camera.

  When the in-home server 31 inputs an operation command for various devices in the home via the network N, the home server 31 notifies the control box 36 of the instruction, and operates the control box 36 so that the various devices operate in accordance with the operation command. . The in-home server 31 can provide various information acquired from the gas / water meter 39 to the management server 32 through the network N, and accepts from the operation panel 40 that the monitoring device 41 has detected an abnormality. This is also provided to the management server 32 through the network N.

  In the portion where the control unit 9 of the power supply system 1 configured as described above and the DC device 5 are connected by the DC supply line 22, the control unit 9 functions as a master unit in the power distribution system of the present invention. 22 functions as a pair line of the power distribution system, and the DC device 5 functions as a terminal of the power distribution system. In the power distribution system, the control unit 9 and the DC device 5 connected on the same DC supply line 22 can communicate with each other using the DC supply line 22 as a communication line.

  FIG. 2 is a schematic diagram showing the configuration of the power distribution system. In the power distribution system, a plurality of DC devices 5 are connected to a DC supply line 22 connected to the control unit 9. The control unit 9 supplies power to each DC device 5 connected to the DC supply line 22 and periodically transmits a beacon signal to the DC devices 5.

  By the way, in the DC power distribution system, when the DC device 5 is newly connected to the DC supply line 22, the electric signal supplied from the control unit 9 is affected by the DC device 5 already connected to the DC supply line 22. The reception state in the newly connected DC device 5 becomes in an inappropriate state, and the DC device 5 may not operate properly due to the reception state. Thus, the quality of the operation state of the DC device 5 is determined based on the reception state of the electrical signal supplied from the control unit 9 to the DC device 5, and the quality of the operation state of the DC device 5 based on the reception state is indicated. Examples of the index value include an S / N ratio related to the beacon signal and a voltage level in the DC device 5 accompanying power supply from the control unit 9.

  Each DC device 5 includes a measurement unit 61 that measures the index value indicating the quality of its own operation state based on the reception state of the electrical signal supplied from the control unit 9 when connected to the DC supply line 22. ing. When the measurement unit 61 receives a beacon signal from the control unit 9, the measurement unit 61 measures the S / N ratio as the index value based on the signal, and uses the voltage level associated with the power supply from the control unit 9 as the index value. taking measurement. The DC device 5 also includes a notification unit 62 for notifying the user or the like of the measurement result obtained by the measurement unit 61. The notification unit 62 is provided so as to face the surface of the DC device 5 and drives the LED 63 and the speaker 64 that function as a display ringing unit, thereby notifying the user of the measurement result by the measurement unit 61. .

  Here, when the DC device 5 is newly connected to the DC supply line 22, the communication performed between the DC device 5 and the control unit 9 and the processing performed in the DC device 5 will be described with reference to FIG. The sequence diagram shown in FIG.

  After being connected to the DC supply line 22, the DC device 5 is activated by power feeding from the control unit 9 and receives a beacon signal periodically transmitted from the control unit 9. The measurement unit 61 of the DC device 5 measures the S / N ratio based on the beacon signal and measures the voltage level associated with the power supply from the control unit 9. And when the measured S / N ratio is a value (for example, 4 dB or less) indicating a failure in the operating state of the DC device 5, or the measured voltage level is a value indicating a failure in the operating state of the DC device 5. In the case of (for example, 14v or less), the notification unit 62 drives the LED 63 and the speaker 64 representing an error, for example, turns on the red LED and sounds a beep. Thereby, the measurement result by the measurement part 61 is alert | reported toward a user by the alerting | reporting part 62, LED63, and the speaker 64. FIG. On the other hand, when both the measured S / N ratio and the voltage level have a margin with respect to the value indicating the malfunction of the DC device 5 (for example, larger than 4 dB, 14 v), the notification unit 62 The LED 63 indicating that the DC device 5 can be connected is driven, for example, the green LED is turned on. Thereby, the measurement result by the measurement part 61 is alert | reported toward a user by the alerting | reporting part 62 and LED63.

  Note that in the DC device 5, the measurement unit 61, the notification unit 62, the LED 63, the speaker 64, and the like have values smaller than a voltage level (for example, greater than 14 v) necessary for the original operation (such as illumination) of the DC device 5. For example, it is driven at 3.3v). This is because the measurement unit 61 can measure the S / N ratio and voltage level, and the notification unit 62 can drive the LED 63 and the speaker 64 even when the voltage level is smaller than the necessary value (14v). It is.

  Further, in the DC device 5 newly connected to the DC supply line 22, there is a possibility that the S / N ratio of the beacon signal from the control unit 9 is too low to receive the beacon signal. In order to cope with such a case, the notification unit 62 of the DC device 5 drives the LED 63 and the speaker 64 indicating an error when the own device does not receive the beacon signal after the own device is connected to the DC supply line 22. It has a function to perform (red LED lighting and beep sound).

According to the embodiment described in detail above, the following effects can be obtained.
(1) When the DC device 5 is newly connected to the DC supply line 22, the measuring unit 61 of the DC device 5 indicates the quality of its own operation state based on the reception state of the electric signal from the control unit 9. An index value is measured. Specifically, the S / N ratio of the beacon signal transmitted from the control unit 9 to the DC device 5 is measured as the index value, and the voltage level at the DC device 5 accompanying the power supply from the control unit 9 is measured. Is measured as the index value. When one of the S / N ratio and the voltage level is a value indicating a defective operation state of the DC device 5, the notification unit 62 drives the LED 63 and the speaker 64 indicating an error (the red LED is lit). And a beep). In this way, the measurement result by the measurement unit 61 is notified to the user by the notification unit 62.

  Therefore, in the communication using the DC supply line 22 between the control unit 9 and the newly connected DC device 5, a failure due to the decrease in the S / N ratio occurs, and the DC device 5 is appropriately used. When the operation stops, this can be notified by the notification unit 62, the LED 63, and the speaker 64 of the DC device 5. In addition, in the newly connected DC device 5, when the voltage level accompanying the power supply from the control unit 9 decreases and the DC device 5 does not operate properly, this is notified to the notification unit of the DC device 5. 62, the LED 63, and the speaker 64 can also notify the user. As a result, the user can understand that the reason why the DC device 5 newly connected to the DC supply line 22 cannot be properly operated is the decrease in the S / N ratio and the decrease in the voltage level. It becomes possible to take various measures. Such measures include changing the connection point of the DC device 5 with respect to the DC supply line 22 or additionally connecting a power source to the DC supply line 22.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
In this embodiment, when a DC device 5 is newly connected to the DC supply line 22, the DC unit 5 is already connected to the DC supply line 22 due to the influence of power consumption of the DC device 5. When the reception state of the electrical signal from 9 deteriorates and the operation state becomes defective, this can be notified to the user. More specifically, when the voltage level of another DC device 5 becomes a value indicating a malfunction of the DC device 5 due to the connection of the new DC device 5, this is connected to the newly connected DC device. The notification unit 62, the LED 63, and the like are used for notification. In this embodiment, only the voltage level is used as an index value indicating a failure in the operation state of the DC device 5 based on the reception state of the electrical signal supplied from the control unit 9 to the DC device 5.

  FIG. 4 is a schematic diagram showing the configuration of the power distribution system of the present embodiment. When the DC device 5 is newly connected to the DC supply line 22, the control unit 9 of the power distribution system measures the voltage level by the measuring unit 61 for all the DC devices 5 connected to the DC supply line 22. Make it. Then, the control unit 9 uses the notification unit 62, the LED 63, and the speaker 64 of the newly connected DC device 5 to notify the measurement result of the voltage level in the DC device 5 and the measured voltage. The measurement result of the same voltage level in the DC device 5 whose level indicates a defective operation state is also notified.

  Here, when the DC device 5 is newly connected to the DC supply line 22, communication performed between each DC device 5 and the control unit 9 and processing performed in the control unit 9 and the DC device 5. Will be described with reference to the sequence diagram shown in FIG.

  When the DC device 5 is newly connected to the DC supply line 22, the DC device 5 is activated by power feeding from the control unit 9 and transmits a new entry notification to the control unit 9. When the control unit 9 receives the new entry notification from the newly connected DC device 5, it transmits a response signal by broadcast to the DC device 5 connected to the DC supply line 22. When the measurement unit 61 of each DC device 5 connected to the DC supply line 22 receives the response signal, the measurement unit 61 measures the voltage level accompanying the power supply from the control unit 9. When the measured voltage level is not a value indicating a malfunction of the DC device 5 (for example, greater than 14v), the DC devices 5 other than the newly connected DC device 5 measure that fact. A result notification (OK) is transmitted to the control unit 9. Further, when the measured voltage level is a value (for example, 14 v or less) indicating that the operating state of the DC device 5 is defective, the DC device 5 transmits a measurement result notification (NG) to that effect to the control unit 9. To do.

  After receiving the measurement result notification from the DC device 5, the control unit 9 notifies the voltage level measurement result of the newly connected DC device 5 using the notification unit 62 and the LED 63 of the DC device 5. That is, the notification unit 62 of the newly connected DC device 5 depends on whether or not the voltage level measured by the measurement unit 61 is a value (14 v or less) indicating a failure in the operating state of the DC device 5. The LED 63 and the speaker 64 of the own device are driven to notify the measurement result of the voltage level, and the control unit 9 permits the notification of the measurement result of the voltage level. In addition, if there is a DC device 5 that has received NG as the measurement result notification, the control unit 9 transmits this to the newly connected DC device 5 as a notification instruction notification, and the DC device 5 Is notified using the notification unit 62 and the LED 63.

  Specifically, if the measurement result of the voltage level at the newly connected DC device 5 is NG, the LED 63 and the speaker 64 of the DC device 5 for notifying that are driven, that is, the red LED is turned on. And a beep sound is generated. On the other hand, if the measurement result of the voltage level at the newly connected DC device 5 is OK, the LED 63 of the DC device 5 for notifying that is driven, that is, the green LED is turned on. However, in this case, if the measurement result of the voltage level in the other DC device 5 is NG, the driving of the LED 63 of the newly connected DC device 5 for notifying that, that is, the red LED lighting is also performed. It is done together. Therefore, when the DC device 5 is newly connected to the DC supply line 22, even if the measurement result of the voltage level in the DC device 5 is OK, the measurement result of the voltage level in the other DC device 5 is NG. Then, in the newly connected DC device 5, both green LED lighting and red LED lighting are performed.

According to the embodiment described in detail above, the following effects can be obtained.
(2) When a new DC device 5 is connected to the DC supply line 22, the DC unit 5 is already connected to the DC supply line 22 from the control unit 9 due to the influence of power consumption of the DC device 5. When the voltage level associated with the power supply decreases and the operation state becomes defective, this can be notified to the user by the newly connected DC device 5. Therefore, the user confirms the above notification (green and red LED lighting) in the DC device 5 newly connected to the DC supply line 22, and separates the DC device 5 from the DC supply line 22, It is possible to take measures to additionally connect a power source to the supply line 22.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
In this embodiment, when the DC device 5 is newly connected to the DC supply line 22, the DC unit 5 is already connected to the DC supply line 22 due to the influence of the impedance of the DC device 5. When the reception state of the electrical signal from the terminal deteriorates and the operation state becomes defective, this can be notified to the user. More specifically, when the connection of the new DC device 5 causes the S / N ratio of the signal from the control unit 9 to be a value indicating the malfunction of the DC device 5 in the other DC device 5. Is notified using the notification unit 62 and LED 63 of the newly connected DC device 5. In this embodiment, only the S / N ratio is used as an index value indicating a failure in the operation state of the DC device 5 based on the reception state of the electrical signal supplied from the control unit 9 to the DC device 5.

  FIG. 6 is a schematic diagram showing the configuration of the power distribution system of the present embodiment. When the DC device 5 is newly connected to the DC supply line 22, the control unit 9 of the power distribution system has the above S / N ratio by the measuring unit 61 in all the DC devices 5 connected to the DC supply line 22. Make a measurement. The DC device 5 connected to the DC supply line 22 has a function of transmitting the measurement result of the S / N ratio to the control unit 9 after measuring the S / N ratio by the measurement unit 61. The control unit 9 uses the notification unit 62, the LED 63, and the speaker 64 of the newly connected DC device 5 to notify the measurement result of the S / N ratio in the DC device 5, and was measured. The measurement result of the S / N ratio in the DC device 5 whose S / N ratio indicates a malfunction in the operating state is notified. Note that the measurement result of the S / N from the DC device 5 whose S / N ratio showed a malfunction in the operation state as described above is a communication resulting from the influence of the impedance or the like of the newly connected DC device 5. It may not reach the control unit 9 due to a defect. For this reason, if there is a DC device 5 that cannot receive the S / ratio measurement result, the control unit 9 indicates that the S / N ratio measured by the DC device 5 is defective in the operating state of the DC device 5. As an example, the notification unit 62 and the LED 63 of the newly connected DC device 5 are used to notify that effect.

  Here, when the DC device 5 is newly connected to the DC supply line 22, communication performed between each DC device 5 and the control unit 9 and processing performed in the control unit 9 and the DC device 5. Will be described with reference to the sequence diagram shown in FIG.

  When the DC device 5 is newly connected to the DC supply line 22, the DC device 5 is activated by power feeding from the control unit 9 and transmits a new entry notification to the control unit 9. When the control unit 9 receives the new entry notification from the newly connected DC device 5, it transmits a response signal by broadcast to the DC device 5 connected to the DC supply line 22. When the measurement unit 61 of each DC device 5 connected to the DC supply line 22 receives the response signal, the measurement unit 61 measures the S / N ratio of the response signal. When the measured S / N ratio is not a value indicating a failure in the operating state of the DC device 5 (for example, greater than 4 dB), the DC devices 5 other than the newly connected DC device 5 A measurement result notification (OK) is transmitted to the control unit 9. In addition, when the measured S / N ratio is a value (for example, 4 dB or less) indicating that the operating state of the DC device 5 is poor, the DC device 5 sends a measurement result notification (NG) to that effect to the control unit. 9 to send.

  After receiving the measurement result notification from each DC device 5, the control unit 9 uses the notification unit 62 and the LED 63 of the DC device 5 to report the S / N ratio measurement result in the newly connected DC device 5. Let me know. That is, the notification unit 62 of the newly connected DC device 5 determines whether or not the S / N ratio measured by the measuring unit 61 is a value (4 db or less) indicating a defective operation state of the DC device 5. Accordingly, the LED 63 and the speaker 64 of the own device are driven to notify the measurement result of the S / N ratio, and the control unit 9 allows the notification of the measurement result of the S / N ratio. In addition, when there is a DC device 5 that has received NG as the S / N ratio measurement result notification, the control unit 9 transmits this to the newly connected DC device 5 as a notification instruction notification. The notification is performed using the notification unit 62 and the LED 63 of the DC device 5.

  Specifically, if the measurement result of the S / N ratio in the newly connected DC device 5 is NG, the driving of the LED 63 and the speaker 64 of the DC device 5 for notifying that, that is, red LED lighting and beep sound are performed. On the other hand, if the measurement result of the S / N ratio in the newly connected DC device 5 is OK, driving of the LED 63 of the DC device 5 for notifying that, that is, lighting of the green LED is performed. However, in this case, if the S / N measurement result in the other DC device 5 is NG, the driving of the LED 63 of the newly connected DC device 5 for informing that, that is, the red LED is turned on. Is also performed. Further, the measurement result notification from the DC device 5 whose S / N measurement result is NG does not reach the control unit 9 due to communication failure due to the influence of the impedance or the like of the newly connected DC device 5. There is a case. If there is a DC device 5 that cannot receive the S / R ratio measurement result notification, the control unit 9 assumes that the S / N ratio measurement result in the DC device 5 is NG, The driving of the LED 63 of the DC device 5 connected to, that is, the red LED lighting is performed in the same manner as described above. Therefore, when the DC device 5 is newly connected to the DC supply line 22, even if the measurement result of the S / N ratio in the DC device 5 is OK, the S / N ratio of the other DC device 5 is If the measurement result is NG, both the green LED lighting and the red LED lighting are performed in the newly connected DC device 5.

According to the embodiment described in detail above, the following effects can be obtained.
(3) When a new DC device 5 is connected to the DC supply line 22, the S / N ratio of the DC device 5 already connected to the DC supply line 22 is reduced due to the influence of the impedance of the DC device 5. When the operating state becomes poor due to a drop, this can be notified to the user by the newly connected DC device 5. Therefore, the user confirms the above notification (green and red LED lighting) in the DC device 5 newly connected to the DC supply line 22 and separates the DC device 5 from the DC supply line 22. It is possible to take measures such as changing the connection point of the DC device 5 to the DC supply line 22.

  (4) When a DC device 5 is newly connected to the DC supply line 22, each DC device 5 connected to the DC supply line 22 measures the S / N ratio, and the measurement result is used as a control unit. 9 to send. However, it is inevitable that the impedance or the like of the newly connected DC device 5 affects the communication via the DC supply line 22, and the control unit 9 can be changed from the DC device 5 already connected to the DC supply line 22. Even if NG is transmitted as the measurement result of the S / N ratio toward the, the measurement result may not reach the control unit 9 due to a communication failure due to the influence. In this case, if there is a DC device 5 that cannot receive the measurement result of the S / N ratio by the control unit 9, the S / N ratio measured by the DC device 5 indicates that the operation state is defective. The drive of the LED 63 of the newly connected DC device 5 is used to notify that effect. For this reason, the user who confirmed it can take appropriate measures as described above.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
In this embodiment, when a DC device 5 is newly connected to the DC supply line 22, the voltage level of the DC device 5 that is already connected to the DC supply line 22 is affected by the power consumption of the DC device 5. The purpose of this is to notify the recommended point for adding a power source when there is a thing that has dropped to a value close to a value indicating a defective operating state. In this embodiment, only the voltage level is used as an index value indicating a failure in the operation state of the DC device 5 based on the reception state of the electrical signal supplied from the control unit 9 to the DC device 5.

  FIG. 8 is a schematic diagram showing the configuration of the power distribution system of the present embodiment. When the DC device 5 is newly connected to the DC supply line 22, the control unit 9 of the power distribution system measures the voltage level by the measuring unit 61 for all the DC devices 5 connected to the DC supply line 22. Make it. Then, the control unit 9 uses the notification unit 62, the LED 63, and the speaker 64 of the newly connected DC device 5 to notify the measurement result of the voltage level in the DC device 5 and the measured voltage. Using the notification unit 62 and the LED 63 of the DC device 5 whose level is close to the defective operation state, the recommended point for power supply is notified.

  Here, when the DC device 5 is newly connected to the DC supply line 22, communication performed between each DC device 5 and the control unit 9 and processing performed in the control unit 9 and the DC device 5. Will be described with reference to the sequence diagram shown in FIG.

  When the DC device 5 is newly connected to the DC supply line 22, the DC device 5 is activated by power feeding from the control unit 9 and transmits a new entry notification to the control unit 9. When the control unit 9 receives the new entry notification from the newly connected DC device 5, it transmits a response signal by broadcast to the DC device 5 connected to the DC supply line 22. When the measurement unit 61 of each DC device 5 connected to the DC supply line 22 receives the response signal, the measurement unit 61 measures the voltage level accompanying the power supply from the control unit 9. When the measured voltage level is not a value indicating a failure in the operating state of the DC device 5 (greater than the minimum threshold (for example, 14v)), the DC devices 5 other than the newly connected DC device 5 are: A measurement result notification (OK) to that effect is transmitted to the control unit 9. In addition, when the measured voltage level is a value indicating that the operating state of the DC device 5 is defective (less than the minimum threshold value), the DC device 5 sends a measurement result notification (NG) to that effect to the control unit 9. Send.

  After receiving the measurement result notification from each DC device 5, the control unit 9 notifies the voltage level measurement result of the newly connected DC device 5 using the notification unit 62 and the LED 63 of the DC device 5. . That is, the notification unit 62 of the newly connected DC device 5 determines the LED 63 and the speaker 64 of its own device according to whether or not the voltage level measured by the measurement unit 61 is equal to or lower than the minimum threshold (14v). The control unit 9 is driven to notify the measurement result of the voltage level, and the control unit 9 permits the notification of the measurement result of the voltage level. In addition, the control unit 9 is a DC device whose measured voltage level is a value close to a value indicating a malfunction of the operating state of the DC device 5 (greater than the minimum threshold (14v) and less than the recommended expansion threshold (for example, 16v)). If 5 is present, this is notified through a notification instruction notification broadcasted to each DC device 5. In the DC device 5 in which the measured voltage level is greater than the minimum threshold value and less than or equal to the recommended expansion threshold value, when the notification instruction notification is received, the notification unit 62 causes the LED 63 of the own device to notify the recommended point of power addition. Driving, that is, red LED blinking is performed. In this way, the control unit 9 notifies the user of the recommended point of power addition using the notification unit 62 and the LED 63 of the DC device 5 whose voltage level is higher than the minimum threshold value and lower than the recommended expansion threshold value. .

  Here, when the DC device 5 is newly connected to the DC supply line 22, the processing performed in the notification unit 62 of the DC device 5 connected to the DC supply line 22 is referred to the flowchart of FIG. I will explain. The series of processes shown in this flowchart is started after the voltage level is measured by the measuring unit 61 and when the DC device 5 receives the notification instruction notification from the control unit 9. .

  When the DC device 5 is newly connected to the DC supply line 22, when the DC device 5 in a state connected to the DC supply line 22 receives the notification instruction notification from the control unit 9, a step (hereinafter, referred to as a step) As the processing of 101 (simply expressed as S), it is determined whether or not the DC device 5 is newly connected. If the DC device 5 is newly connected, it is determined whether the voltage level measured by the measuring unit 61 of the DC device 5 is equal to or lower than the minimum threshold (14v) (S102). If the determination is affirmative, the LED 63 and the beep sound are emitted through the driving of the LED 63 and the speaker 64 by the notification unit 62 (S103). Thereby, the measurement result (NG) of the voltage level by the measurement part 61 is alert | reported toward a user by the alerting | reporting part 62, LED63, and the speaker 64. FIG. If the determination is negative in S102, the green LED is lit through the driving of the LED 63 by the notification unit 62 (S104). Thereby, the measurement result (OK) of the voltage level by the measurement part 61 is alert | reported toward a user by the alerting | reporting part 62 and LED63.

  On the other hand, if the DC device 5 that has received the notification instruction notification is a device other than the newly connected DC device 5, that is, a DC device 5 that has already been connected (S101: NO), the measurement of the DC device 5 is performed. It is determined whether or not the voltage level measured by the unit 61 is greater than the minimum threshold (14v) and less than or equal to the recommended extension threshold (16v) (S105). If the determination is affirmative, the red LED blinks through the driving of the LED 63 by the notification unit 62 of the DC device 5 (S106). As a result, the user is notified of the recommended point for adding power.

According to the embodiment described in detail above, the following effects can be obtained.
(5) When the DC device 5 is newly connected to the DC supply line 22, the voltage level of the DC device 5 that has already been connected to the DC supply line 22 decreases. When the voltage level indicates a state close to a defective operation state in the DC device 5, that is, when the voltage level is greater than the minimum threshold value and less than the recommended expansion threshold value, the notification unit 62 and the LED 63 of the DC device 5 are turned on. This is used to notify the user of recommended points for adding power to the user. By notifying the recommended point for adding power supply, the user can easily confirm the point to which the power supply is to be added, and adding the power supply in the vicinity of the DC device 5 that has notified the recommended point for adding power supply. Appropriate measures can be taken.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIGS.
In this embodiment, when the DC device 5 is newly connected to the DC supply line 22, the S / N is already applied to the DC device 5 already connected to the DC supply line 22 due to the influence of the impedance of the DC device 5. It is intended to notify a recommended point for DC device connection when there is a ratio that shows a state having a margin with respect to a value indicating a defective operation state. In this embodiment, only the S / N ratio is used as an index value indicating a failure in the operation state of the DC device 5 based on the reception state of the electrical signal supplied from the control unit 9 to the DC device 5.

  FIG. 11 is a schematic diagram showing the configuration of the power distribution system of the present embodiment. When the DC device 5 is newly connected to the DC supply line 22, the control unit 9 of the power distribution system measures the S / N ratio by the measuring unit 61 for all the DC devices 5 connected to the DC supply line 22. To do. The control unit 9 uses the notification unit 62, the LED 63, and the speaker 64 of the newly connected DC device 5 to notify the measurement result of the S / N ratio in the DC device 5 and is measured. The recommended point of DC device connection is notified using the notification unit 62 and the LED 63 of the DC device 5 in which the S / N ratio shows a state having a margin with respect to the value indicating the defective operation state.

  Here, when the DC device 5 is newly connected to the DC supply line 22, communication performed between each DC device 5 and the control unit 9 and processing performed in the control unit 9 and the DC device 5. Will be described with reference to the sequence diagram shown in FIG.

  When the DC device 5 is newly connected to the DC supply line 22, the DC device 5 is activated by power feeding from the control unit 9 and transmits a new entry notification to the control unit 9. When the control unit 9 receives the new entry notification from the newly connected DC device 5, it transmits a response signal by broadcast to the DC device 5 connected to the DC supply line 22. When the measurement unit 61 of each DC device 5 connected to the DC supply line 22 receives the response signal, the measurement unit 61 measures the S / N ratio of the response signal. The DC devices 5 other than the newly connected DC device 5 have a measured S / N ratio that is not a value indicating a failure of the operating state of the DC device 5 (larger than the minimum threshold (for example, 4 dB)). In this case, a measurement result notification (OK) to that effect is transmitted to the control unit 9. Further, when the measured S / N ratio is a value (below the minimum threshold) indicating that the DC device 5 is in an operating state, the DC device 5 sends a measurement result notification (NG) to that effect to the control unit. 9 to send.

  After receiving the measurement result notification from each DC device 5, the control unit 9 uses the notification unit 62 and the LED 63 of the DC device 5 to report the S / N ratio measurement result in the newly connected DC device 5. Let me know. That is, the notification unit 62 of the newly connected DC device 5 determines whether the S / N ratio measured by the measurement unit 61 is equal to or less than the minimum threshold value (4 dB) or less. 64 is driven to notify the measurement result of the S / N ratio, and the control unit 9 allows the notification of the measurement result of the S / N ratio. In addition, the control unit 9 has a DC device 5 in which the measured S / N ratio is in a state having a margin (more than a recommended connection threshold (for example, 22 dB)) with respect to a value indicating a defective operation state of the DC device 5. This is notified through a notification instruction notification broadcasted to each DC device 5. In the DC device 5 in which the measured S / N ratio is larger than the recommended connection threshold value, when the notification instruction notification is received, the notification unit 62 drives the LED 63 of the own device to notify the recommended point of DC device connection, that is, Green LED blinks. In this way, the control unit 9 notifies the user of the recommended point of DC device connection using the notification unit 62 and the LED 63 of the DC device 5 whose S / N ratio is larger than the DC connection recommended threshold.

  Here, when the DC device 5 is newly connected to the DC supply line 22, the processing of the notification unit 62 of the DC device 5 already connected to the DC supply line 22 is shown in the flowchart of FIG. 13. The description will be given with reference. The series of processing shown in this flowchart is started after the measurement unit 61 has measured the S / N ratio and when the DC device 5 receives a notification instruction notification from the control unit 9. Is done.

  When the DC device 5 is newly connected to the DC supply line 22, when the DC device 5 connected to the DC supply line 22 receives the notification instruction notification from the control unit 9, the new connection is made. It is determined whether or not the DC device 5 has been made (S201). If the DC device 5 is newly connected, it is determined whether or not the S / N ratio measured by the measuring unit 61 of the DC device 5 is equal to or lower than the minimum threshold (4 dB) (S202). . If the determination is affirmative, the LED 63 and the beep sound are emitted through the driving of the LED 63 and the speaker 64 by the notification unit 62 (S203). Thereby, the measurement result (NG) of the S / N ratio by the measurement unit 61 is notified to the user by the notification unit 62, the LED 63, and the speaker 64. If the determination is negative in S202, the green LED is lit through the driving of the LED 63 by the notification unit 62 (S204). Thereby, the measurement result (OK) of the S / N ratio by the measurement unit 61 is notified to the user by the notification unit 62 and the LED 63.

  On the other hand, if the DC device 5 that has received the notification instruction notification is other than the newly connected DC device 5, that is, the DC device 5 that has already been connected (S201: NO), the measurement of the DC device 5 is performed. It is determined whether or not the S / N ratio measured by the unit 61 is larger than the recommended connection threshold (22 dB) (S205). If the determination is affirmative, the green LED blinks through the driving of the LED 63 by the notification unit 62 of the DC device 5 (S206). Thereby, the recommendation point of DC apparatus connection is alert | reported toward a user.

According to the embodiment described in detail above, the following effects can be obtained.
(6) When the DC device 5 is newly connected to the DC supply line 22, the S / N ratio in the DC device 5 that is already connected to the DC supply line 22 is a value that indicates a failure in the operating state of the DC device 5. On the other hand, when a state with a margin is shown, the notification unit 62 and the LED 63 of the DC device 5 are used to notify the recommended point of DC device connection to the user. By notifying the recommended point for connecting the DC device, the user can easily confirm a suitable point for connecting the DC device 5. Therefore, when the DC device 5 is newly connected to the DC supply line 22, it is notified by the red LED lighting and the beep sound that the DC device 5 does not operate properly due to the decrease in the S / N ratio. In this case, the user can take an appropriate measure of reconnecting the DC device 5 to the vicinity of the DC device 5 terminal that has notified the recommended point of DC device connection.

[Other Embodiments]
In addition, each said embodiment can also be changed as follows, for example.
In the fifth embodiment, when notifying the recommended point of DC device connection by blinking the green LED on the DC device 5, there is a margin for the value indicating the failure of the operating state of the DC device 5 of the measured S / N ratio You may make it change the grade of the said alert | report according to the magnitude | size of a degree. For example, as the margin of the measured S / N ratio with respect to the value indicating the failure of the operating state of the DC device 5 increases, in other words, the recommended degree of the recommended point for connecting the DC device increases, the greener the DC device 5 becomes. The blinking speed of the LED may be increased. In this case, the DC device 5 is connected to a point suitable for the user in consideration of the usability of the DC device 5 after being connected to the DC supply line 22 while taking into consideration the degree of recommendation as a DC device connection point. can do.

  In the fifth embodiment, when the voltage level is an index value and the DC device 5 is newly connected to the DC supply line 22, the voltage level is set to a value indicating the malfunction of the DC device 5 in another DC device 5. On the other hand, when there is a state with a margin (for example, greater than 20 v), the DC device 5 may blink the green LED to notify the recommended point of DC device connection. Regarding the notification of the recommended points for DC device connection, the degree may be changed according to the degree of margin with respect to the value indicating the malfunction of the DC device 5 at the measured voltage level. In this case, the same effect as described above can be obtained.

  -In 5th Embodiment, you may alert | report the recommendation point of DC apparatus connection by the beep sound and voice guidance from the speaker 64 in DC apparatus 5. FIG. In this case, if the degree of notification by the beep sound or voice guidance is changed in accordance with the recommended level of recommended points for DC device connection, the same effect as described above can be obtained.

-In 4th Embodiment, you may alert | report the recommendation point of a power supply addition by the beep sound and voice guidance from the speaker 64 in DC apparatus 5. FIG.
In the first embodiment, when a DC device 5 is newly connected to the DC supply line 22, communication is performed between the DC device 5 and the control unit 9 as shown in FIG. The DC device 5 may measure the S / N ratio. Specifically, when the DC device 5 is newly connected to the DC supply line 22, the DC device 5 transmits a new entry notification to the control unit 9. The control unit 9 transmits a response signal toward the DC device 5 based on the reception of the new entry notification, and the DC device 5 measures the S / N ratio of the response signal when receiving the response signal. In this case, the same effect as that of the first embodiment can be obtained.

-You may combine 2nd Embodiment and 4th Embodiment.
-You may combine 3rd Embodiment and 5th Embodiment.
In the first embodiment, one of the S / N ratio and the voltage level may be used as an index value, and the measurement result of the index value may be notified.

  DESCRIPTION OF SYMBOLS 1 ... Electric power supply system, 2 ... Commercial alternating current power supply, 3 ... Solar cell, 4 ... Fuel cell, 5 ... DC apparatus, 6 ... AC apparatus, 7 ... Control unit, 8 ... DC distribution board, 9 ... Control unit, 10 DESCRIPTION OF SYMBOLS ... Relay unit, 11 ... AC distribution board, 12 ... AC system power line, 13 ... DC system power line, 14 ... DC system power line, 15 ... DC system power line, 16 ... Storage battery, 17 ... Signal line, 18 ... DC system power line, DESCRIPTION OF SYMBOLS 19 ... DC system power line, 20 ... Signal line, 21 ... Signal line, 22 ... DC supply line, 23 ... Switch, 24 ... Sensor, 25 ... DC system power line, 26 ... Switch, 27 ... DC outlet, 28 ... DC system power line , 29 ... Electric power meter, 30 ... Network system, 31 ... Home server, 32 ... Management server, 33 ... Signal line, 34 ... Home equipment, 35 ... DC power line, 36 ... Control box, 37 ... 38 ... DC supply line, 39 ... gas / water meter, 40 ... operation panel, 41 ... monitoring device, 61 ... measuring unit (measuring unit), 62 ... notifying unit (notifying unit), 63 ... LED, 64 ... speaker .

Claims (9)

In a DC power distribution system that can connect a terminal to a paired wire connected to a parent device, feed power from the parent device to a terminal connected to the paired wire, and use the paired wire as a communication line,
The terminal is configured to measure an index value indicating the quality of its own operating state based on a reception state of an electric signal supplied from the parent device when connected to the pair line, and a measurement by the measuring unit An informing means for informing the result;
A direct current power distribution system comprising: The DC power distribution system according to claim 1, wherein
The DC distribution system according to claim 1, wherein the measuring means measures an S / N ratio related to a signal transmitted from the master unit as the index value. The DC power distribution system according to claim 1, wherein
The DC power distribution system according to claim 1, wherein the measuring means measures a voltage level based on power supply from the parent device as the index value. The DC power distribution system according to claim 1, wherein
When the terminal is newly connected to the paired line, the base unit causes all the terminals connected to the paired line to perform the measurement of the index value by the measuring unit, and the newly connected terminal The notification means is used to notify the measurement result of the index value at the same terminal, and also to notify the measurement result of the index value at the terminal where the measured index value indicates a malfunction in the operating state. DC power distribution system. The DC power distribution system according to claim 4,
The terminal connected to the pair line, after measuring the index value by the measuring means based on the instruction of the master unit, transmits the measurement result of the index value to the master unit,
If there is a terminal that cannot receive the measurement result of the index value, the base unit assumes that the index value measured by the terminal indicates a malfunction in the operating state, and the notification means of the newly connected terminal A DC power distribution system characterized by using and notifying that effect. The DC power distribution system according to claim 3,
When the terminal is newly connected to the paired line, the base unit causes all the terminals connected to the paired line to perform the measurement of the index value by the measuring unit, and the newly connected terminal The notification means is used to notify the measurement result of the index value in the terminal, and the measured index value indicates the state of the operation state that is close to a defective operation state. A DC power distribution system that performs notification. The DC power distribution system according to claim 1, wherein
When the terminal is newly connected to the paired line, the base unit causes all the terminals connected to the paired line to perform the measurement of the index value by the measuring unit, and the newly connected terminal Using the notification means of the terminal that notifies the measurement result of the index value in the terminal using the notification means, and shows that the measured index value has a margin with respect to the value indicating the failure of the operation state A DC power distribution system that provides notification of recommended points for terminal connection. The DC power distribution system according to claim 7,
The DC power distribution system according to claim 1, wherein the notification means performs notification of a recommended point for the terminal connection by driving a display ringing unit facing the surface of the terminal. The DC power distribution system according to claim 8,
The notification means performs the notification of the recommended point of the terminal connection by driving the display ringing unit, according to the degree of margin with respect to a value indicating a failure in the operation state of the measured index value. DC distribution system characterized by changing the degree of notification by the unit.

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