JP4048127B2 - Electrical equipment monitoring system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical equipment monitoring system that monitors deterioration and abnormality of electrical equipment.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a home appliance control network system that controls on / off of home appliances installed in a home via a network has been provided (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-86572 A (paragraph numbers [0067]-[0070] and FIG. 4)
[0004]
[Problems to be solved by the invention]
In the above-described home appliance network system, the home appliance itself to be used must have a communication function for communicating with the controller through the network, which has a problem of high costs and does not have a communication function. It is necessary to introduce home appliances having a communication function in place of the home appliances, and there is a problem that the burden on the user is heavy.
[0005]
In addition, in order to monitor the deterioration and abnormality of each home electric appliance, there is a problem that a means for monitoring the power consumption is required for each home electric appliance as a means for performing such monitoring.
[0006]
The present invention has been made in view of the above-mentioned problems, and its purpose is to identify the electrical equipment being used and to determine the deterioration or abnormal state of the electrical equipment, and to change or add functions to the electrical equipment. It is an object of the present invention to provide an electrical monitoring system that can be monitored without any problems.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, a current and a voltage that are interposed between an electric device and a power source and are supplied to the electric device during energization of the electric device are detected as an electric quantity, and the electric A means for obtaining a feature quantity representing the magnitude of current from a behavior of quantity, a feature quantity representing the shape of a current waveform, a feature quantity representing a time difference between current and voltage, and a means for sending the obtained feature quantity data through a communication line. One or more load feature quantity detection devices each having one communication means;
  A feature database in which feature data corresponding to each electric device is stored in association with individual attribute data, and a second communication unit that receives feature data sent from the load feature detector; A specifying means for specifying the electrical device corresponding to the received feature value data by comparing the feature value data registered in the feature value database with the feature value data received by the second communication means; And a management device having monitoring means for monitoring the state of the electric device based on the characteristic amount data of the electric device.The load feature quantity detection device is provided corresponding to each individual electrical device, and the monitoring unit of the management device diagnoses the degradation state of the corresponding electrical device based on the feature value data from each feature quantity detection device. DoIt is characterized by that.
[0009]
  Claim2In the invention ofIt is interposed between the electrical equipment and the power supply, detects the current and voltage supplied to the electrical equipment while the electrical equipment is energized as an electrical quantity, and the feature quantity and current waveform indicate the magnitude of the current from the behavior of the electrical quantity. One or a plurality of load feature quantity detections having means for obtaining a feature quantity representing the shape of a current, a feature quantity representing a time difference between current and voltage, and a first communication means for sending the obtained feature quantity data through a communication line A device, a feature database in which feature data corresponding to each electric device is stored in association with individual attribute data, and a second feature that receives feature data sent from the load feature detector A feature that specifies the electrical device corresponding to the received feature value data by comparing the feature value data registered in the feature value database with the communication means and the feature value data received by the second communication means. Comprising means and, and a management device having a monitoring means for monitoring the state of the electrical device by the feature data of the specified electrical apparatus,A load feature quantity detection device is inserted on the start side of a power line to which a plurality of electrical devices of the same kind are connected, and obtains a feature quantity corresponding to the behavior of the electrical quantity supplied to all of the plurality of electrical equipment of the same kind. The monitoring unit of the management device diagnoses the deterioration state of the plurality of similar electric devices based on the feature amount data from the load feature amount detection device.
[0010]
  Claim3In the invention of claim2In the present invention, the electrical device is a public lighting load such as a street light, a tunnel lighting device, a road light, etc., and a LAN or WAN is connected between the management device installed on the administrator side and the feature amount detection device. It is connected via a network, and feature value data from a load feature detection device is sent to the management device via a communication line of the network.
[0011]
  Claim4In the present invention, claims 1 to3In any one of the inventions, the monitoring means of the management device has a function of detecting an overcurrent state from feature amount data from the feature amount detection device.
[0012]
  Claim5In the invention of claim4In the invention, the feature amount detection device includes a switch unit that is inserted between the electric device and the power source and is forcibly turned off when an overcurrent state is detected.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  The present invention will be described with reference to embodiments.
  (Basic configuration)
  Figure 1Shows basic configuration of electrical equipment monitoring systemFIG. 1 is a system configuration diagram. In the illustrated system, a management device 1 housed in a distribution board 2 provided in a house or building and a LAN communication line 3 wired in advance indoors from the management device 1 are connected. 10BASE-T and 100BASE-T, etc., a connection unit 4 for connecting a LAN terminal provided with a modular jack 5 as an embedded wiring device, a power line 50 previously wired indoors from the distribution board 2, and a power line 50 A power supply connection terminal directly connected to the power supply connection terminal is provided with an outlet section 6 connected via a current detection element 91 (see FIG. 2) described later, and a signal input / output terminal of a LAN communication circuit 94 (refer to FIG. 2) described later. Is connected to the power connection end directly connected to the power line 50 and the load feature quantity detecting device 9 unitized in the same form as the embedded wiring apparatus. And a load connection terminal portion for directly connecting a facility electrical device (for example, a lighting fixture) 20 that is connected via the current detecting element 91 and is permanently installed, and an operation switch SW of the electrical device 20 is provided. A load feature quantity detection device 9 ′ having a signal line connection end directly connected to the communication line 3, and a display data from the management device 1. The display device 7a including the operation unit 7b and the display device 7a that displays the monitoring information in response to the basic components.
[0014]
An electrical device 20 such as a television, a vacuum cleaner, a cooking device, an air conditioning facility or the like is connected to the outlet portion 6 of the load feature amount detection device 9 by a power plug 22 of a power cord 21 as necessary. By connecting a modular plug (not shown) on the other end side of the LAN cable 23 whose one end side is connected to the modular jack 5 of the connection unit 4 with a modular plug (not shown), the load characteristic amount is connected to the communication line 3. The detection device 9 is connected as a LAN terminal.
[0015]
  hereThis systemIn this case, Ethernet (R) is used as the LAN, but other methods may be used, and a wireless signal medium or the like may be used. In FIG. 1, only one communication line 3 is shown, but in reality, it is wired from the hub 10 (see FIG. 4) on the management apparatus 1 side to each connection unit 4 and load feature quantity detection apparatus 9 ′. ing.
[0016]
Next, the configuration of the load feature quantity detection device 9 will be described with reference to FIG.
[0017]
The load feature amount detection device 9 includes a power connection terminal portion 90 that directly connects the power line 50 and a receptacle portion 6 that removably connects the power plug 22 of the electrical device 20. The commercial AC power can be supplied from the power line 50 through a current detection element 91 made of a low impedance resistance element or CT. Then, the characteristic amount is calculated by a method described later based on the divided voltage waveform from the voltage dividing circuit 92 that divides the AC power supply voltage applied through the power line 50 by, for example, a resistor, and the current waveform detected by the current detecting element 91. And a communication circuit 94 for sending the feature value data calculated by the feature value calculation unit 93 to the LAN. The modular jack 8 is used as a signal input / output terminal of the communication circuit 94. Provided.
[0018]
The feature amount calculation unit 93 is composed of a microcomputer, and is A / D-converted and captured by an A / D converter (not shown) incorporating inputs from the current detection element 91 and the voltage voltage dividing circuit 92 to detect current. The feature amount is obtained by calculation using the detection output corresponding to the load current value by the element 91 and the output voltage from the voltage dividing circuit 92.
[0019]
  Here, there are various types of feature quantities. These feature quantities are largely divided into three: feature quantities representing the magnitude of current, feature quantities representing the shape of the current waveform, and feature quantities representing the time difference between current and voltage. A characteristic amount necessary for specifying the type and operation state of the electric device may be used as the characteristic amount of each classification. Here, as a result of actually observing the consumption current flowing through the household electric appliance, the average value of the current is used as the feature value indicating the magnitude of the current, and the peak average value is used as the feature value indicating the shape of the current (the peak value of the current is the average value). ), Peak time difference (time difference between current peak and voltage peak), energization time, peak delay rate (time from the start of energization to the peak of current in terms of energization time) Since it was found that using the five feature values of the divided value), it is possible to specify the model of the electrical device and its operating state almost certainly from the current waveform.This systemThen, the five feature quantities are computed by the feature quantity computation unit 93, and the feature quantity data is sent to the management apparatus 1 via the communication circuit 94 and the LAN.
[0020]
In the case of the load feature quantity detection device 9 ′, a load connection terminal portion (not shown) for directly connecting the wiring from the electric device 20 is provided instead of the outlet portion 6, and an operation switch is provided in the energization path. It differs from the load feature quantity detection device 9 in that the SW is inserted and the modular plug provided on the communication line 3 side is directly connected to the modular jack provided as the signal input / output terminal of the communication circuit 94.
[0021]
Further, the load feature quantity detection device 9 shown in FIG. 1 is configured in the form of an embedded wiring device, but may be configured in the form of a table tap, in which case the power connection terminal portion 90 is provided. A power plug 96 is provided at the front portion of the power cord 95, and the power plug 96 is connected to a normal outlet device 24 installed in a room or the like, thereby connecting to the power line 50. For connection to the LAN, a LAN cable 23 connects between the modular jack 8 provided in the apparatus main body and the modular jack 5 of the connection unit 4.
[0022]
  NowThis systemAs shown in FIG. 3, the management device 1 includes an Ethernet (R) communication circuit 11 for exchanging information with the communication circuit 94 of the load feature quantity detection device 9, and the communication circuit 11 as a plurality of LAN terminals. And the load unit 6 and the load connection terminal of the load feature quantity detection device 9 based on the feature quantity data sent from the load feature quantity detection devices 9 and 9 '. In order to identify the electrical device 20 connected to the unit, the feature amount database 12 in which the feature amount data and individual attribute data of the various electrical devices 20 are registered in advance and the entire management device 1 are used. A monitoring processing unit 14 composed of a microcomputer and an interface unit 15 for inputting / outputting data to / from the display device 7 are provided.
[0023]
  This systemThe monitoring processing unit 14 performs functions such as a function of a specifying means for specifying the electric device 20 based on the feature amount data, a monitoring of a connection position of the specified electric device 20, and reading and writing of data in the database 12. , A function as a monitoring means for monitoring the state of the electric device 20 by a diagnosis function or the like for determining normality / abnormality of the electric device 20 including the power cord based on the characteristic data, and the monitoring result are displayed on the display device 7 It has a function to perform data processing.
[0024]
For the feature data of various electric devices and the individual attribute data of electric devices registered in the feature database 12, either register these data provided by the electric device manufacturer in advance, or actually use them at the system installation location. For the electrical device 20 to be collected, the load feature amount detection devices 9 and 9 ′ transmit and collect the feature amount data from the load feature amount detection devices 9 and 9 ′ to the management device 1 side by actually operating one electrical device at the initial start of the system. There is a learning registration method in which the individual attribute data of the electrical device 20 is input in association with the feature amount data on the management device 1 side.
[0025]
An example of the learning registration method will now be described with reference to FIG.
[0026]
In this case, for example, an instruction can be given from the operation unit 7b of the display device 7 so as to switch the operation of the monitoring processing unit 14 between the registration mode and the normal mode. In the registration mode, when individual attribute data (for example, catalog data) including the model name of the electrical device 20 connected to a certain load feature quantity detection device 9 or 9 ′ is input from the operation unit 7b (step S11), the management device A command for causing the one monitoring processing unit 14 to perform a learning process and the individual attribute data of the electric device 20 are transmitted. Thereafter, when the electric device 20 connected to the outlet unit 6 (or the load connection terminal unit) of the load feature quantity detection device 9 (or 9 ′) is turned on and energized (step S12), the load feature quantity detection device. 9, the feature amount calculation unit 93 takes in the inputs from the current detection element 91 and the voltage dividing circuit 92 by A / D conversion (step S <b> 13), and uses the current detection element 91 to calculate the current waveform and the voltage distribution. The feature quantity of the current waveform is calculated based on the power supply voltage waveform obtained from the output voltage waveform of the voltage circuit 92 (step S14), and the feature quantity data is transmitted to the management apparatus 1 by the communication circuit 94 (step 8 S15). Thereafter, the user continues energization of the electric device 20 for a while, and in the case of the electric device 20 whose operation state can be switched in the determination of step S16, after the user switches the operation state of the electric device 20 (step S17). ), Returning to step S13, the above-described operation is repeated. Then, the operation state is changed throughout and the feature amount data in each state is sequentially transferred to the management apparatus 1 side via the communication circuit 94. When the monitoring processing unit 14 of the management apparatus 1 finishes receiving all the predetermined feature amount data, the feature amount data data received in association with the input individual attribute data is registered in the feature amount database 12 (Step S1). S18). And the learning process of the said electric equipment 20 is complete | finished, and this completion | finish is displayed on the display apparatus 7 side.
[0027]
In the case of an electrical device that cannot change the operating state in the determination in step S16, the learning process is terminated.
[0028]
As described above, the feature amount data and the individual attribute data of each electrical device 20 connected in the system are sequentially registered in the feature amount database 12 provided in the management apparatus 1. Then, after the registration of all the feature data and individual attribute data of the connected electrical device 20 is completed, the user sends a command to the management device 1 to switch the operation mode to the normal mode from the operation unit 7b of the display device 7. Then, it enters a standby state for the connection of the electric device 20. In the example, the display device 7 is used, but a computer connected on the LAN is used for learning processing, and the collected feature data and individual attribute data are transferred from the computer to the management device 1 via the LAN and registered. Alternatively, the management device 1 itself may be provided with an operation unit so that the above operation can be performed.
[0029]
  nextThis systemThe operation of will be described with reference to FIG.
[0030]
When the power switch of the electrical device 20 connected to the outlet section 6 of the load feature quantity detection device 9 is turned on and energization is started, the detection output of the current level and the voltage level corresponding to the behavior of the electrical device 20 is output. It is taken in from the current detection element 91 to the feature amount calculation unit 93. In addition, a divided voltage corresponding to the fluctuation of the power supply voltage is taken from the voltage dividing circuit 92 into the feature amount calculation unit 93.
[0031]
Here, as shown in FIG. 5, the feature quantity calculation unit 93 takes in the outputs of the current detection element 91 and the voltage dividing circuit 92 from the A / D conversion unit (not shown) (step S1), and the current is calculated from the taken-in value. An average value for several cycles of the value and the voltage value is calculated (step S2). Next, the feature amount calculation unit 93 determines whether or not the feature amount data has been transmitted to the management apparatus 1 (step S3). If the feature amount data has never been transmitted, the process after step S5 is performed. If the process has been performed and the feature data has been transmitted, the determination in step S4 is performed. In the determination process in step S4, the feature amount calculation unit 93 determines whether or not the average value obtained in step S2 has changed by a certain value or more from the average value transmitted to the management device 1 last time. If it has changed above, the process after step S5 is performed, and when the variation | change_quantity of an average value is less than a fixed value, it returns to step S1 and repeats the above-mentioned process.
[0032]
In step S5, the feature quantity computing unit 93 obtains a feature quantity other than the average value by computation, and when the computation of the feature quantity is completed, the feature quantity data and the load feature quantity detection device 9 of the load feature quantity detection device 9 are transmitted to the management device 1 through the communication circuit 94. It is transmitted together with identification data (IP address, MAC address of the communication circuit 94, etc.) (step S6).
[0033]
The monitoring processing unit 14 of the management apparatus 1 collates the feature amount data received through the communication circuit 11 with the feature amount data registered in the feature amount database 12, and if there is a match, the feature amount data The model name of the electrical device 20 is specified from the corresponding individual attribute data (step S7).
[0034]
In this case, the monitoring processing unit 14 compares the received feature quantity data data with the feature quantity data registered in the feature quantity database 12, and the electric device having the feature quantity data substantially matching the received feature quantity data data. 20 is selected as a candidate. Further, the monitoring processing unit 14 compares each of the plurality of feature amount data, and finally selects and determines the electrical device 20 selected as the most candidate as a result of selecting the candidates for the electrical device 20. When the monitoring processing unit 14 identifies the connected electrical device 20, the monitoring processing unit 14 determines the connection position of the electrical device 20 in association with the identification data of the load feature value detection device 9 that has transmitted the feature value data of the electrical device 20.
[0035]
In this way, the management device 1 can grasp the connection position of the electrical device 20, and the load feature quantity detection device 9 can detect the electrical device 20 in which the connection position of a refrigerator, an air conditioner, a lighting fixture or the like does not change. The energization state can be continuously monitored by receiving the feature amount data sent with the average value changing by a certain value or more.
[0036]
In the state where the electric device 20 continues to operate, the monitoring processing unit 14 sets the above-described change in the average value as the feature amount data sent from the load feature amount detecting device 9 or 9 ′. When it is determined that the current flowing in the electric device 20 is excessive and the allowable range is exceeded, a diagnostic function for displaying this on the display device 7a of the display device 7 is also provided.
[0037]
This excessive current may flow due to the judgment line of the power cord, tracking, etc., and these excessive currents may cause the cord to ignite or generate heat. However, as described above, the indicator 7a of the display device 7 is used. By displaying the overcurrent at, it is possible to inform the householder, so that it is possible to prevent accidents.
[0038]
  Here, in the load feature quantity detection device 9 (or 9 ′), as shown in FIG. 6, a switch unit 97 such as a contact point of a relay device is inserted into the energization path to the electric device 20, and the monitoring processing unit 14 is thus operated. When it is determined that the diagnostic function is abnormal, the control function provided in the monitoring processing unit 14 creates off control data for turning off the switch unit 97 and sends it to the corresponding load feature quantity detecting device 9 through the communication circuit 94. A function of transmitting and forcibly turning off the switch unit 97 may be provided.
  (Embodiment1)
  the aboveBasic configurationIn this embodiment, although the connection location is not changed, the present embodiment constitutes a system for monitoring deterioration in the case of the electric device 20 such as a lighting fixture or an air conditioner that is continuously used. Is. As shown in FIG. 7, the load feature quantity detection device 9 ″ that directly connects the electrical device 20 to the load connection terminal portion without using the operation switch SW is used. The internal configuration of the load feature quantity detection device 9 ″ Since the configuration is the same as that of the load feature quantity detection device 9 of FIGS. 2 and 6, the description of the internal configuration is omitted. The internal configuration of the management device 1 and the display device 7 is alsoWhat was explained in the basic configurationSince it is the same as FIG.
[0039]
Thus, the monitoring processing unit 14 of the management device 1 according to the present embodiment continuously monitors the characteristic change of the connected electrical device 20 based on the feature amount data transmitted from each load feature amount detection device 9 ″. When the feature amount data determined to have deteriorated is received, the display device 7 displays the deterioration of the electric device 20.
[0040]
As a result, if the electric device 20 is a lighting fixture, the user can know lamp deterioration and the like, and can be replaced quickly. In addition, it is possible to know that other electric devices 20 must be replaced.
[0041]
  (Embodiment2)
  Embodiment above1In this system, one of the electric devices 20 used is provided with the load feature amount detection device 9 (or 9 ′ or 9 ″). However, in this embodiment, the same type of electric device 20 having the same characteristics is provided. As shown in FIG. 8, a plurality of electric devices 20 of the same type are connected to the power line 50 branched from the distribution board 2 as shown in FIG. A detection device 9 ″ is interposed. This load feature quantity detection device 9 ″ is installed on the distribution board 2, and is provided with a circuit breaker instead of the switch unit 97. That is, a plurality of electrical devices 20 are connected. The power line 50 can be cut off when an overcurrent or a short-circuit current flows through the existing power line 50.
[0042]
  The other configuration is the first embodiment.Or basic configuration systemTherefore, the description of the configuration of the management device 1 and the configuration of the display device 7 is omitted. In addition, since it corresponds only to the same kind of electric equipment 20, the data to be registered in the feature quantity database 12 may be only the feature quantity data of the electric equipment 20. In this case, if the data corresponds to the number of connections, the data corresponding to the number of connections The status can be monitored.
[0043]
  Thus, the monitoring processing unit 14 of the management apparatus 1 is an embodiment.1As in the case of the above, the deterioration state of the electrical devices 20 is monitored based on the feature amount data from the load feature amount detection device 1, and if it is determined that the replacement state has come due to the deterioration state, the display device 7 The determination result is displayed on the display 7a to inform the user.
[0044]
As a result, if the electric device 20 is a lighting fixture, the user can know lamp deterioration and the like, and can be replaced quickly.
[0045]
The load feature quantity detection device 9 ″ is provided with a switch unit 97 instead of a circuit breaker, and an overcurrent is detected by the monitoring processing unit 14, and when the overcurrent is detected, off control data is sent from the management device 1 to the load feature quantity detection device. The switch part 97 may be forcibly turned off to 9 ″.
[0046]
  (Embodiment3)
  This embodiment is an embodiment2Is developed into a system for monitoring deterioration of road lights and tunnel lighting fixtures. As shown in FIG. 9, a road lamp 20a installed on a road and a lighting fixture 20b installed in a tunnel are used as an embodiment.2In the same manner as in the above, a plurality of units are connected to the same power line 50, and the load feature quantity detecting device 9 ″ is accommodated in the distribution board 2 ′ provided corresponding to each power line 50, and these load feature quantity detecting devices 9 ″ are accommodated. The communication circuit 97 is connected to a communication line 30 of a network such as a dedicated or Internet, and the feature amount data is transmitted to the management apparatus 1 installed in the road management office X through the network. Here, the management device 1 is configured by a computer system having a display device, and the function of the monitoring processing unit 14 is realized by the execution of application software by a computing device of the computer system. Use an external storage device.
[0047]
Thus, in the present embodiment, the management device 1 of the road management office X existing at a location away from the tunnel or road includes an operation state including deterioration of the lamps of the road lamp 20a and the lighting fixture 20b provided in each. Can be monitored based on the feature amount data sent from each load feature amount detection device 9 ″.
[0048]
  (Embodiment4)
  This embodiment is an embodiment2Is developed into a system for monitoring deterioration of street lamps provided as shared facilities such as apartment houses, and a street lamp 20c installed on a road as shown in FIG. 10 is an embodiment.2In the same manner as in the above, a plurality of units are connected to the same power line 50, and the load feature quantity detection device 9 ″ is housed in the distribution board 2 ″ provided corresponding to each power line 50 to detect these load feature quantities. The communication circuit 97 of the device 9 ″ is connected to a communication line 30 ′ such as a LAN, and the feature amount data is transmitted to the management device 1 installed in the manager office Y through the communication line 30 ′. Here, the management device 1 is constituted by a computer system provided with a display device, and the function of the monitoring processing unit 14 is realized by execution of application software by a computing device of the computer system. An external storage device such as a device is used.
[0049]
Thus, in the present embodiment, the management device 1 of the road office X existing at a location away from the street lamp 20c monitors the operation state including the deterioration of the lamp of the street lamp 20c provided in each. This can be done with the feature data sent from the load feature sensor 9 ''.
[0050]
  Incidentally, in the case of an apartment house where no manager is resident, the feature quantity data may be sent from the load feature quantity detection device 9 ″ to the management apparatus 1 provided in the apartment house management company Z through the Internet 31.
  (Embodiment5)
  The above-mentioned objects to be monitored were electrical equipment 20 such as household electrical appliances, street lighting 20a, lighting equipment 20b for tunnels, street lighting 20c, etc. This embodiment is used to monitor the state of the equipment. As shown in FIG. 11, the load characteristic amount corresponding to each research equipment distribution board 2 ′ ″ is connected to the power line 50 connecting each research equipment 20d. The detection device 9 ″ is housed, for example, by connecting the management device 1 provided in the management office W of the laboratory and each load feature amount detection device 9 ″ through the communication line 3 such as a LAN, an overcurrent is generated. It monitors the occurrence of abnormal conditions that flow and monitors equipment degradation.
[0051]
【The invention's effect】
  According to the first aspect of the present invention, the current and voltage that are interposed between the electric device and the power source and are supplied to the electric device while the electric device is energized are detected as an electric quantity, and the magnitude of the current is determined from the behavior of the electric quantity. 1, a feature quantity representing a current waveform shape, a feature quantity representing a time difference between current and voltage, and a first communication means for sending the obtained feature quantity data through a communication line. Or a plurality of load feature quantity detection devices;
  A feature database in which feature data corresponding to each electric device is stored in association with individual attribute data, and a second communication unit that receives feature data sent from the load feature detector; A specifying means for specifying the electrical device corresponding to the received feature value data by comparing the feature value data registered in the feature value database with the feature value data received by the second communication means; And a management device having monitoring means for monitoring the state of the electric device based on the characteristic amount data of the electric device.The load feature quantity detection device is provided corresponding to each individual electrical device, and the monitoring unit of the management device diagnoses the degradation state of the corresponding electrical device based on the feature value data from each feature quantity detection device. ShiTherefore, the usage state of the electrical equipment can be collectively monitored by the management device, and it is not necessary to add a special function to the electrical equipment side, so that the cost is low.
[0052]
  further,The load feature amount detection device is provided corresponding to each individual electrical device, and the monitoring unit of the management device diagnoses the deterioration state of the corresponding electrical device based on the feature amount data from each feature amount detection device. Therefore, it is possible to monitor the deterioration state of different electrical devices.
[0053]
  Claim2In the invention ofIt is interposed between the electrical equipment and the power supply, detects the current and voltage supplied to the electrical equipment while the electrical equipment is energized as an electrical quantity, and the feature quantity and current waveform indicate the magnitude of the current from the behavior of the electrical quantity. One or a plurality of load feature quantity detections having means for obtaining a feature quantity representing the shape of a current, a feature quantity representing a time difference between current and voltage, and a first communication means for sending the obtained feature quantity data through a communication line A device, a feature database in which feature data corresponding to each electric device is stored in association with individual attribute data, and a second feature that receives feature data sent from the load feature detector A feature that specifies the electrical device corresponding to the received feature value data by comparing the feature value data registered in the feature value database with the communication means and the feature value data received by the second communication means. Comprising means and, and a management device having a monitoring means for monitoring the state of the electrical device by the feature data of the specified electrical apparatus,A load feature quantity detection device is inserted on the start side of a power line to which a plurality of electrical devices of the same kind are connected, and obtains a feature quantity corresponding to the behavior of the electrical quantity supplied to all of the plurality of electrical equipment of the same kind. The monitoring unit of the management device diagnoses the deterioration state of the plurality of similar electrical devices based on the feature amount data from the load feature amount detection device.The use state of the electric device can be collectively monitored by the management device, and it is not necessary to add a special function to the electric device side in particular. Moreover,The feature amount data of a plurality of electric devices of the same type having similar characteristics can be detected by one load feature amount detection device, so that the cost is reduced.
[0054]
  Claim3In the invention of claim2In the invention, the electrical device is a public lighting load such as a street light, a tunnel lighting device, a road light, etc., and a LAN or WAN is connected between the management device installed on the administrator side and the feature amount detection device. Since the feature amount data from the load feature detection device is connected to the management device via the network communication line and is connected via the network, the street light or road installed in the common place of the apartment house It is possible to monitor the deterioration of the road lamps installed in the tunnel and the tunnel lamps installed in the tunnel at a remote place, so that maintenance such as lamp replacement can be performed quickly.
[0055]
  Claim4In the present invention, claims 1 to3In any one of the inventions, since the monitoring means of the management device has a function of detecting an overcurrent state from the feature amount data from the feature amount detection device, an overcurrent caused by an abnormality on the connected electrical equipment side It is possible to detect the condition and prevent accidents such as ignition.
[0056]
  Claim5The invention of claim4In the invention, the feature amount detecting device includes a switch unit that is inserted between the electric device and the power source and is forcibly turned off when an overcurrent state is detected. It can be done to prevent accidents such as ignition and improve safety..
[Brief description of the drawings]
FIG. 1 of the present inventionShow basic configurationIt is a system configuration diagram.
FIG. 2 is a configuration diagram of an example of a load feature quantity detection device used in the above.
FIG. 3 is a configuration diagram of a management apparatus used in the above.
FIG. 4 is a flowchart for explaining an example of a method for registering feature amount data in the feature amount database according to the first embodiment.
FIG. 5 is a flowchart for explaining the normal operation of the load feature quantity detection device used in the above.
FIG. 6 is another configuration diagram of the load feature quantity detection device used in the above.
FIG. 7 shows an embodiment of the present invention.1FIG.
FIG. 8 shows an embodiment of the present invention.2FIG.
FIG. 9 shows an embodiment of the present invention.3FIG.
FIG. 10 shows an embodiment of the present invention.4FIG.
FIG. 11 shows an embodiment of the present invention.5FIG.
[Explanation of symbols]
1 management device
2 Distribution board
3 communication lines
4 Connection unit
5 Modular jack
6 Outlet section
7 Display device
7a Display
7b Operation unit
8 Modular jack
9, 9 'load feature quantity detection device
20 Electrical equipment
21 Power cord
22 Power plug
50 power lines

Claims (5)

It is interposed between the electrical equipment and the power supply, detects the current and voltage supplied to the electrical equipment while the electrical equipment is energized as an electrical quantity, and the feature quantity and current waveform indicate the magnitude of the current from the behavior of the electrical quantity. One or a plurality of load feature quantity detections having means for obtaining a feature quantity representing the shape of a current, a feature quantity representing a time difference between current and voltage, and a first communication means for sending the obtained feature quantity data through a communication line Equipment,
A feature database in which feature data corresponding to each electric device is stored in association with individual attribute data, and a second communication unit that receives feature data sent from the load feature detector; A specifying means for specifying the electrical device corresponding to the received feature value data by comparing the feature value data registered in the feature value database with the feature value data received by the second communication means; A management device having monitoring means for monitoring the state of the electrical device from the feature amount data of the electrical device ,
The load feature amount detection device is provided corresponding to each individual electrical device, and the monitoring unit of the management device diagnoses the deterioration state of the corresponding electrical device based on the feature amount data from each feature amount detection device. An electrical equipment monitoring system characterized by that. It is interposed between the electrical equipment and the power supply, detects the current and voltage supplied to the electrical equipment while the electrical equipment is energized as an electrical quantity, and the feature quantity and current waveform indicate the magnitude of the current from the behavior of the electrical quantity. One or a plurality of load feature quantity detections having means for obtaining a feature quantity representing the shape of a current, a feature quantity representing a time difference between current and voltage, and a first communication means for sending the obtained feature quantity data through a communication line Equipment,
A feature database in which feature data corresponding to each electric device is stored in association with individual attribute data, and a second communication unit that receives feature data sent from the load feature detector; A specifying means for specifying the electrical device corresponding to the received feature value data by comparing the feature value data registered in the feature value database with the feature value data received by the second communication means; A management device having monitoring means for monitoring the state of the electrical device from the feature amount data of the electrical device,
A load feature quantity detection device is inserted on the start side of a power line to which a plurality of electrical devices of the same kind are connected, and obtains a feature quantity corresponding to the behavior of the electrical quantity supplied to all of the plurality of electrical equipment of the same kind. ,
Monitoring means of the management apparatus, gas equipment monitoring system power you characterized by diagnosing the deterioration state of the electrical device of the plurality of the same kind on the basis of the feature amount data from the load characteristic amount detecting device. The electrical equipment is a public lighting load such as a street light, a tunnel lighting device, a road light, etc., and the management device installed on the administrator side and the feature quantity detection device are connected via a LAN or WAN network. 3. The electrical equipment monitoring system according to claim 2, wherein the feature quantity data from the connected load feature detection device is sent to the management device via the communication line of the network . 4. The electrical equipment monitoring system according to claim 1 , wherein the monitoring unit of the management device has a function of detecting an overcurrent state from feature amount data from the feature amount detection device. . 5. The electrical device monitoring system according to claim 4, wherein the feature amount detection device includes a switch unit that is inserted between the electrical device and the power source and is forcibly turned off when an overcurrent state is detected .

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