JP2007135265A - Electric power consumption monitoring method and electric power consumption monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric power consumption monitoring method that monitors a plurality of electronic apparatuses, by using working power monitoring devices and working power measurement devices that are connected to places apart from the plurality of electronic apparatuses via power cables, and to provide a working power monitoring system. <P>SOLUTION: The electric power consumption monitoring method monitors the statuses of working powers of the plurality of electronic apparatuses fed by electric powers from the electric power cables connected to a commercial power supply. The electric powers consumption of the plurality of electronic apparatuses are measured by a plurality of the electric power consumption measurement devices that measure the electric powers of the electronic apparatuses via the power cables. Then, the measured electric power consumption are monitored by the working power monitoring devices via the power cables. The electric power monitoring device receives electric power information transmitted from each of the electronic apparatuses, and the working power information is compared with a first threshold for determining the abnormality of the working power in the electronic apparatus, and a second threshold for deciding the possibility of a fault of the electronic apparatus, by using a value lower than the first threshold. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power usage monitoring method and a power usage monitoring system that can be used for supplying power from a power line and transmitting information. The present invention also relates to a power consumption monitoring method and a power consumption monitoring system for monitoring the electronic device using a power consumption monitoring device and a power consumption measurement device that are connected to a plurality of electronic devices at positions away from each other via a power line. Is.

  For example, as means for performing power superimposition communication using a power supply line, a method of superimposing a communication signal on a power supply line using a coil or the like, and a power consumption of an electronic device supplied from the power supply line are measured using a coil or the like The method is general. A method for measuring the power consumption of an electronic device supplied from a power line using a coil or the like is common. Further, the method for judging the abnormal state of the electronic device monitors the power used by the electronic device, and if the electronic device exceeds a certain threshold value, determines that the electronic device is abnormal and supplies power to the electronic device. It has stopped.

For example, in the invention described in Japanese Patent Application No. 2005-2616, the power used by each electronic device is measured by winding a first coil around a power line that supplies power to a plurality of electronic devices. . The used power information is superimposed on the power line via the second coil wound around the same core as described above, and is multiplex transported. The used power information is received at one place, and each received received power information is compared with reference power in each corresponding electronic device. The compared power usage information is superimposed on the power line as information as to whether or not it is within the reference power, and is transmitted by multiple carriers.
Japanese Patent Application No. 2005-2616

  However, in the abnormal state of the electronic device, a sudden stop of the power supply may take time for the user to repair, replace, or replace the electronic device, which may be inconvenient. Moreover, although the electronic device often deteriorates gradually, it suddenly fails for the user. In particular, it is not uncommon for a sudden failure of a hot water heater for a bath to take one to two weeks for the repair to be completed due to the contract of the repairer and the date of repair. There are many televisions in the home, and there is no problem even if you do not watch. However, electronic devices that are close to life, such as hot water heaters for baths, do not have spare facilities, feel a lot of inconvenience even if the period during which they cannot be used is short.

  In order to solve the above-described problems, the present invention distinguishes between an abnormal state of an electronic device and a state where there is a possibility of failure, and can detect the possibility of failure as soon as possible. The purpose is to provide a monitoring system. The present invention provides a power consumption monitoring method and a power consumption monitoring system that can take measures such as repair, replacement, and replacement before an electronic device breaks down, and can minimize inconvenience. For the purpose. The present invention provides a usage power monitoring method and a usage power monitoring system that can perform multiple carrier communication between an electronic device, a usage power measurement device, and a usage power monitoring device, and can quickly inform the user of the possibility of a failure. For the purpose.

(First invention)
A power consumption monitoring method according to a first aspect of the present invention includes a plurality of electronic devices to which power is supplied from a power line connected to a commercial power supply, a power consumption measuring device that measures each power usage for the electronic device via the power line, It is composed of a power consumption monitoring device that monitors power consumption measured by a plurality of power consumption measurement devices via the power line, receives power consumption information conveyed from each electronic device, and each power consumption A first threshold for determining an abnormality in power consumption in each electronic device corresponding to the information, and a second threshold for determining the possibility of failure of the electronic device with a value lower than the first threshold To determine whether the level is higher than the first threshold, a level between the first threshold and the second threshold, or a level lower than the second threshold. After, characterized by notifying the determination result to said electronic appliance.

(Second invention)
In the power usage monitoring method of the second invention, each level of the threshold value in the electronic device of the first invention can be reported at least at one of the power usage measuring device, the power usage monitoring device, and the electronic device connected by the power line. And

(Third invention)
In the power usage monitoring method of the third invention, the power usage of each of the plurality of electronic devices in the first invention or the second invention is measured through the first coil wound around the core around which the power line is wound. The measured power usage information is transmitted by being superimposed on a power line through a second coil wound around the core.

(Fourth invention)
A power consumption monitoring system according to a fourth aspect of the present invention is a plurality of electronic devices to which power is supplied from a power line connected to a commercial power source, and a power consumption measuring device that measures each power usage for the electronic device via the power line. A power usage monitoring device that monitors power usage measured by the power usage measuring devices via the power line, and a reference for determining an abnormality in the power measured by the power usage measuring device; A first threshold value storage means for storing the first threshold value, and a reference for determining the possibility of failure based on the power measured by the power consumption measuring device, and a second value that is lower than the first threshold value. Based on the second threshold value storage means for storing the threshold value and the power measured by the power consumption measuring device, the first threshold value and the second threshold value are compared. Comparing and determining means for determining whether the power consumption exceeds a first threshold, a level between the first threshold and the second threshold, or a level not exceeding the second threshold. It is characterized by.

(Fifth invention)
In the power usage monitoring system of the fifth aspect of the invention, the first threshold value storage means, the second threshold value storage means, and the comparison judgment means of the fourth aspect of the invention are provided in each of the power usage measurement device and / or the power usage monitoring device. It is characterized by being.

(Sixth invention)
In the power consumption monitoring system according to the sixth aspect of the present invention, the comparison / determination means according to the fourth or fifth aspect of the present invention includes a level at which the determined power consumption of the electronic device exceeds the first threshold, the first threshold and the second threshold. And a level that does not exceed the second threshold value are notified by at least one of an electronic device, a power consumption measuring device, and a power consumption monitoring device.

(Seventh invention)
In the power consumption monitoring system according to the seventh aspect of the invention, the notification means according to the sixth aspect of the invention is a visual device comprising an LED display element or the like, or an audible device comprising a buzzer or the like.

(Eighth invention)
In the power consumption monitoring system according to the eighth aspect of the present invention, when the comparison / determination means according to the fourth to seventh aspects of the present invention determines that the power consumption of the electronic device is at a level exceeding the first threshold, the electronic device is connected via the power line A stop signal transmission circuit of an electronic device for stopping the power supply of the electronic device is provided in each of the used power measuring device and / or the used power monitoring device.

(9th invention)
In the power usage monitoring system according to the ninth aspect of the present invention, the electronic device, the power usage measurement device, and the power usage monitoring device each include a transmission device and a reception device, and are capable of communicating with each other via a power line.

  According to the present invention, the power consumption measuring device and / or the power consumption monitoring are performed using the power lines that supply the power consumption information from the plurality of electronic devices arranged in a distributed manner to the respective electronic devices. By transmitting to the apparatus, not only can the power consumption be monitored inexpensively and efficiently, but also the user can be informed of the status before the electronic device breaks down.

  According to the present invention, the power used in each electronic device is measured, and based on the measured power information, a first threshold value for determining an abnormality, and a value lower than the first threshold value, A second threshold for determining that there is a possibility of failure of the electronic device is stored in advance, and whether each electronic device is abnormal or has a possibility of failure is notified by each threshold. Therefore, measures such as repair, replacement, and replacement of the electronic device can be quickly established, and a period during which the electronic device cannot be used can be minimized.

  According to the present invention, since the electronic device, the used power measuring device, and the used power monitoring device can exchange information with each other via the power line, not only can a plurality of electronic devices be centrally managed, The power supply can be stopped before a major accident occurs.

  According to the present invention, the information on the measured power consumption is determined by the power consumption measuring device, and the electronic device is controlled by directly communicating with the electronic device via the power lines connected to each other. You can also. According to the present invention, communication between an electronic device and a power consumption measuring device enables transmission / reception of information to / from an inexpensive device by using wireless, wired, infrared, or light in addition to the power line.

(First invention)
The power usage monitoring method according to the first aspect of the invention monitors the power usage status of a plurality of electronic devices to which power is supplied from a power line connected to a commercial power source. The power usage of the plurality of electronic devices is measured by a plurality of power usage measuring devices that measure the power usage for the electronic devices via the power line. Thereafter, the measured power consumption is monitored via the power line by a power consumption monitoring device.

  The power consumption measuring device receives power consumption information conveyed from each electronic device. In the power consumption measuring device, a failure of the electronic device at a first threshold value for determining abnormality of power consumption in each electronic device corresponding to the power consumption information and a value lower than the first threshold value. And a second threshold value for determining the possibility of.

  After determining whether the electronic device is at a level exceeding the first threshold, a level between the first threshold and the second threshold, or a level lower than the second threshold, the determination result Is notified. The determination based on the first threshold value and the second threshold value can be performed by the used power measuring device and / or the used power monitoring device based on the used power information obtained by measuring the power in each electronic device.

(Second invention)
The power consumption monitoring method of the second invention obtains the current power level of each electronic device by the power consumption measuring device and / or the power consumption monitoring device of the first invention, and the state of the electronic device according to the power level is obtained. Notification is made at at least one of a power usage measuring device, a power usage monitoring device, and an electronic device connected by a power line. In addition, the power consumption monitoring device can make determinations and notifications for each electronic device, or can make determinations and notifications based on the overall power of each electronic device.

(Third invention)
The power usage monitoring method of the third invention measures the power usage of each of the plurality of electronic devices in the first invention or the second invention through the first coil wound around the core around which the power line is wound. ing. The measured power usage information can be transmitted to an electronic device and / or a power usage monitoring device by being superimposed on a power line via a second coil wound around the core.

(Fourth invention)
According to a fourth aspect of the present invention, there is provided a power consumption monitoring system including a plurality of electronic devices, a power consumption measuring device corresponding to the electronic device, a power consumption monitoring device capable of monitoring information corresponding to the power consumption measuring device or information of the entire electronic device. Connected through. The plurality of electronic devices are supplied with power from a power line connected to a commercial power source. The used power measuring device measures each used power for the electronic device via the power line. The plurality of used power measuring devices transmit the measured used power to the used power monitoring device that monitors the power line.

  The power consumption measuring device and / or the power consumption monitoring device includes a first threshold value storage unit that stores a first threshold value that serves as a reference for determining an abnormality in the power measured by the power consumption measurement device, and the power consumption. There is provided a second threshold value storage means for storing a second threshold value which is a reference for determining the possibility of failure based on the electric power measured by the measuring device and which is lower than the first threshold value. The comparison judgment means provided in the used power measuring device and / or used power monitoring device compares the first threshold and the second threshold based on the power measured by the used power measuring device, It is determined whether the power used by the electronic device is a level that exceeds the first threshold, a level between the first threshold and the second threshold, or a level that does not exceed the second threshold.

  The level at which the electric power used by the electronic device exceeds the first threshold is a case where the electric power used by the electronic device is abnormal, and the level between the first threshold and the second threshold is the electronic device. Is a case where there is a high possibility that a failure will occur in the near future, and a level not exceeding the second threshold is a case where there is no possibility of an abnormality and failure in the electronic device. In the power usage monitoring system of the present invention, when a repair is requested after an electronic device has failed, the inconvenience that the electronic device cannot be used until the electronic device is repaired is eliminated, and the repair is requested while the possibility of failure is high. The time when the electronic device cannot be used can be shortened. The power consumption monitoring system according to the present invention can eliminate the time during which an electronic device cannot be used by purchasing a new electronic device within a high possibility of failure.

(Fifth invention)
In the power usage monitoring system of the fifth aspect of the invention, the first threshold value storage means, the second threshold value storage means, and the comparison judgment means in the fourth aspect of the invention may be provided in each of the power usage measurement device and the power usage monitoring device. it can. Further, the first threshold value storage means, the second threshold value storage means, and the comparison judgment means in the fourth invention can be provided in each used power measuring device or used power monitoring device. The power consumption measuring device is often provided in the vicinity of an electronic device. In many cases, the power consumption monitoring device is provided in the vicinity of a terminal portion of a power system. Therefore, the first threshold value storage means, the second threshold value storage means, and the comparison judgment means in the fourth invention can be provided in whole or in part in consideration of the installation location of the electronic device or the like. ing.

(Sixth invention)
The power usage monitoring system of the sixth invention is a level in which the power usage of the electronic device determined by the comparison and determination means of the fourth invention or the fifth invention exceeds the first threshold, the first threshold and the second threshold. It is possible to notify whether the level is between the level in between or the level that does not exceed the second threshold value by a notification means provided in at least one of the electronic device, the used power measuring device, and the used power monitoring device. In other words, the present invention can be arbitrarily adapted depending on the type of electronic device, the size of the installation location, and the like.

(Seventh invention)
In the power usage monitoring system of the seventh aspect of the invention, the notification means in the fourth to sixth aspects of the invention comprises a visual device comprising an LED display element or an audible device comprising a buzzer. The visual device may generate light by the LED display element or may be a message as a character string. The audible device can notify the user of the notification content by a buzzer, chime, music, or the like.

(Eighth invention)
The power consumption monitoring system according to the eighth aspect of the present invention is the case where the comparison / determination means according to the fourth to seventh aspects of the present invention determines that the power consumption of the electronic device exceeds the first threshold value indicating that the power consumption is abnormal. An electronic device stop signal transmission circuit is provided for stopping the power supply of the electronic device via the power line. The stop signal transmission circuit can be provided in the used power measuring device and / or the used power monitoring device, respectively. In addition, the used power monitoring system can also stop the entire system if necessary when the used power is abnormal.

(9th invention)
In the power consumption monitoring system of the ninth invention, the electronic device, power consumption measurement device, and power consumption monitoring device in the fourth to eighth inventions are provided with a transmission device and a reception device, and each information can be communicated via a power line. It is in a state. For example, a microcomputer in the power consumption measuring apparatus can control an electronic device via a power line.

  FIG. 1 is a schematic block diagram for explaining a power consumption monitoring system according to a first embodiment of the present invention. In FIG. 1, a power consumption monitoring system includes a plurality of electronic devices 1, 2,... N, a power line 4, a single power consumption monitoring device 5 connected to the power line 4 via a coil, From the used power measuring devices 6, 7,... M connected through the voltage detection devices 15, 25,... 35 comprising the coil 1 and the coils 2,. It is configured.

  The power consumption monitoring device 5 is based on the power usage information received from the respective electronic devices 1, 2,... N via the power line 4 and the reception device 53. The microcomputer 54 checks whether or not there is a possibility of abnormality or failure. The result is transmitted to the electronic devices 1, 2,... N and the used power measuring devices 6, 7,. The transmitted information regarding the possibility of abnormality or failure is received by the receiving device 63 via the coil 2, for example, and is notified by a not-shown notification device under the control of the microcomputer 64. The microcomputer 64 sends a control signal from the transmission device 62 to the electronic device 1 through the power line 4 and performs control. In addition, the power consumption measuring devices 6, 7,..., M are often installed at locations relatively close to the electronic devices 1 to n. Wired, infrared, or light can be used.

  The power usage measuring device 6 includes a reference voltage monitoring device 61, a transmitting device 62, a receiving device 63, and a microcomputer 64. The power consumption measuring devices 7,... M also have the same configuration. For example, the reference voltage monitoring device 61 acquires the power usage state of the electronic device 1 through the coil 1. The used power obtained by the reference voltage monitoring device 61 is transmitted from the transmitting device 62 to the used power monitoring device 5 via the coil 2 under the control of the microcomputer 64, for example. Similarly, the other transmission devices 72,... Superimpose the used power information from the respective electronic devices 2,... N on the power line 4 via the coils and transmit them to the used power monitoring device 5. .

  FIG. 2 is a block configuration diagram for explaining in detail the power consumption monitoring apparatus according to the first embodiment of the present invention. In FIG. 2, the power consumption monitoring unit for the electronic device 1 is compared with the reception circuit 211, the demodulation circuit 212, the first storage circuit 213, the first threshold storage circuit 214, and the second threshold storage circuit 215. A determination circuit 216, an informing means 217 for notifying the comparison determination result, a stop signal transmission circuit 218 of the electronic device 1 for transmitting a stop signal for stopping the electronic device 1 based on the comparison determination result, and a second memory circuit 219, a modulation circuit 220, a transmission circuit 221, and a control circuit 222 for controlling each circuit. In addition, the power consumption monitoring device 5 is provided corresponding to each of the electronic devices 1, 2,..., N, and the reception circuit 211, the transmission circuit 221 and the like can be shared.

  As a representative, the power consumption monitoring unit for the electronic device 1 will be described. The receiving circuit 211 receives power usage information transmitted from the power usage measuring device 6 described later. The demodulating circuit 212 demodulates the used power information transmitted while being superimposed on the power line 4. The first storage circuit 213 is provided as necessary, and stores the used power information. The first threshold value storage circuit 214 stores a first threshold value serving as a reference for determining an abnormality of the electronic device 1. The second threshold value storage circuit 215 stores a second threshold value that is lower than the first threshold value and serves as a reference for determining the possibility of failure of the electronic device 1.

  The comparison determination circuit 216 determines whether or not the power information transmitted from the used power measurement device 6 is equal to or greater than the first threshold, equal to or less than the first threshold, equal to or greater than the second threshold, or equal to or less than the second threshold. Compare or consider. The notification result of the comparison / discrimination circuit 216 is notified by the notification means 217. Further, when it is determined that the examination result is an abnormality of the electronic device 1, the notification means 217 informs that the electronic device is abnormal, and at the same time, the electronic device 1 uses the stop signal transmission circuit 218 of the electronic device 1. A signal for stopping the supply of power to is sent.

  In addition, the determination result of the comparison determination circuit 216 and the signal from the stop signal transmission circuit 218 of the electronic device 1 are stored in a second storage circuit 219 provided as necessary. Information stored in the second storage circuit 219 is modulated by the modulation circuit 220 and transmitted from the transmission circuit 221. In addition, the reference voltage monitoring devices 71..., The transmission devices 72..., The reception devices 73. It has. In addition, the control circuit 222 skillfully controls each block.

  FIG. 3 is a block diagram for explaining a power consumption monitoring apparatus according to the second embodiment of the present invention. In FIG. 3, the power consumption monitoring device 51 does not include an all electronic device reference power monitoring unit for each electronic device. The power consumption monitoring device 51 is different in that the blocks 321 to 332 have the same functions as the blocks 211 to 222 shown in FIG. 2 and can be determined by the power consumption of all electronic devices. The power usage monitoring device 51 monitors the power usage of the entire electronic device, and enables the power usage of each electronic device to be monitored by a power usage measuring device to be described later. The first threshold storage circuit 324 and the second threshold storage circuit 325 store thresholds corresponding to the electronic devices 1 to n, respectively.

  FIG. 4 is a block diagram for explaining a power consumption measuring apparatus according to a third embodiment of the present invention. In FIG. 4, the power consumption measuring device 6 temporarily stores a reference voltage monitoring device 411 that monitors a reference voltage in the electronic device 1, a CPU 412 that controls the electronic device 1 and the power usage measuring device 6, and a reception signal described later. A first memory circuit 413, a first threshold memory circuit 414 in which a first threshold for determining an abnormality of the electronic device 1 is stored, a value lower than the first threshold, and the The second threshold value storage circuit 415 that stores a second threshold value for determining the possibility of failure of the electronic device 1 and the power information transmitted from the used power measuring device 6 are equal to or greater than the first threshold value. Alternatively, a comparison / determination circuit 416 for comparing and examining whether or not the first threshold is less than or equal to the second threshold or less than or equal to the second threshold and the comparison result by the comparison / determination circuit 416 are temporarily stored. 2 memory circuit 419, informing means 417 for informing the comparison result, stop signal transmission circuit 418 of electronic device 1 for transmitting a signal for stopping electronic device 1 based on the comparison result, second circuit The storage circuit 419 includes at least a transmission / reception circuit 420 that transmits processing signals of the CPU 412 and transmits / receives signals from the electronic device 1 or the power consumption monitoring device 5.

  The comparison result of the comparison / discriminating circuit 416 notifies the notification means 417 that there is a possibility that the electronic device 1 is abnormal or malfunctioned by LED light, message, buzzer, chime, music or the like. The used power measuring devices 7,... M have the same function as the used power measuring device 6.

  FIG. 5 is a block diagram for explaining a power supply circuit and a notification circuit of an electronic apparatus according to a fourth embodiment of the present invention. 5, the electronic device 1 includes a power supply circuit 511 connected to a commercial power supply, a switching circuit 512 that controls supply of power from the power supply circuit 511, a load 513 connected to the power supply circuit 511, and the switching circuit. The reception control circuit 514 that controls 512, a notification unit 515 that notifies the usage status of the electronic device 1, and a control unit that controls a load 513 (not shown) are included.

  The reception control circuit 514 can receive a signal from the used power monitoring device 5 and / or the used power measuring device 6 to turn on and off the switching circuit 512. The reception control circuit 514 receives a notification signal from the power consumption monitoring device 5 and / or power consumption measurement device 6, and informs the notification means 515 of information such as an abnormal state and a possibility of failure by the LED. Or by a message, buzzer, chime, music or the like. The electronic devices 2 to m each have the same function as the electronic device 1.

  FIG. 6 is a flowchart for explaining a case where the power of the electronic device is monitored by the used power monitoring device according to an embodiment of the present invention. In FIG. 6, the power consumption of the electronic device is measured by the power consumption measuring device, and the power information is transmitted to the power usage monitoring device 5, and the power usage power of the electronic device is abnormal in the power usage monitoring device 5. Whether or not there is a high possibility of failure is determined and can be notified by the power consumption measuring device or the electronic device.

  The reference voltage monitoring device 61 in the used power measuring device 6 detects the used power of the electronic device 1 (step 611). The power consumption measuring device 6 transmits, for example, power usage information in the electronic device 1 from the transmission / reception circuit 420 to the power usage monitoring device 5 via the second coil and the power line 4 under the control of the CPU 412 ( Step 612). The transmitted used power information is received by the receiving circuit 211 in the used power monitoring device 5 (step 613).

  The control circuit 222 of the used power monitoring device 5 checks whether or not the used power information is that of the electronic device 1 (step 614). When the control circuit 222 determines that the used power information is that of the electronic device 1, the control circuit 222 demodulates the used power information (step 615). The demodulated power usage information is determined by the comparison and determination circuit 216 in advance based on the first threshold value used as a reference for determining that the power usage of the electronic device 1 is abnormal, and the power usage of the electronic device 1 is the first. It is compared with a second threshold value that is lower than the threshold value and that serves as a criterion for determining the possibility of failure (step 616). The comparison determination circuit 216 determines whether or not the first threshold voltage has been exceeded based on the compared use power information and the first threshold information stored in the first threshold storage circuit 214 in advance. (Step 617).

  When the comparison determination circuit 216 determines that the used power information exceeds the first threshold, the information is modulated by the modulation circuit 220 (step 618). Thereafter, the information is superimposed on the power line 4 by the transmission circuit 221 and transmitted to the used power measuring device 6 (step 619). The power consumption measuring device 6 receives the transmission information of the electronic device 1 by the transmission / reception circuit 420 (step 620). The information received by the transmission / reception circuit 420 can be notified to the user of an abnormality of the electronic device 1 by displaying or notifying the information on the notification means 417 provided in the power consumption measuring device 6 with a buzzer (step 624). .

  The information received by the transmission / reception circuit 420 is transmitted to the electronic device 1 via, for example, the coil 1 and the power line 4 under the control of the CPU 412 (step 621). Transmission to the electronic device 1 can also be performed by wire, wireless, infrared, or light under the control of the CPU 412. The electronic device 1 receives the information by the reception control circuit 514 (step 622), thereby controlling the switching circuit 512 to stop the power supply or reduce the voltage. 1 abnormality can be notified (step 623).

  In the step 617, when the comparison determination circuit 216 determines that the compared use power information and the first threshold voltage stored in the first threshold storage circuit 214 in advance are not exceeded, It is checked whether or not a second threshold value that is lower than the first threshold value and exceeds a second threshold value that is a criterion for determining the possibility of failure of the electronic device 1 (step 625). When the comparison / determination circuit 216 determines that the second threshold value has been exceeded, the notification unit 217 notifies the possibility of failure (step 626). The information is notified by the notification means 515 of the electronic device 1 through steps 619 to 622 (step 623).

  In step 625, when the comparison determination circuit 216 determines that the power usage information does not exceed the second threshold, the power usage monitoring device 5, the power usage measurement device 6, and the notification means 217 in the electronic device 1 Informed. In step 614, when the control circuit 222 of the used power monitoring device 5 determines that the used power information is not for the electronic device 1, whether or not the used power information is for the electronic device 2 is determined in step 627. After step 628, the same processing as step 615 is performed. If it is not the power usage information of the electronic device 1 and the electronic device 2, the same processing is performed up to the electronic device n (step 629).

  According to the present invention, the comparison between the threshold value and the used power information and the notification of the comparison result can be processed by the used power monitoring device and / or the used power measuring device, and the notification of the comparison result can also be performed by each electronic device.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example. The present invention can be modified in various ways without departing from the scope of the claims. The block diagram shown in the embodiments of the present invention can be achieved by known or well-known techniques. The voltage monitoring in the electronic device can be achieved, for example, by winding the power line, the coil 1 and the coil 2 around one toroidal coil. Furthermore, although the present invention has been described in terms of power usage, it can also be processed with a focus on voltage or current.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic block configuration diagram for explaining a power consumption monitoring system that is a first embodiment of the present invention. Example 1 It is a block block diagram for demonstrating in detail the power consumption monitoring apparatus which is 1st Example of this invention. Example 1 It is a block block diagram for demonstrating the power consumption monitoring apparatus which is 2nd Example of this invention. (Example 2) It is a block block diagram for demonstrating the power consumption measuring apparatus which is 3rd Example of this invention. (Example 3) It is a block block diagram for demonstrating the power supply circuit and alerting | reporting circuit of the electronic device which are 4th Example of this invention. (Example 4) It is a flowchart for demonstrating the case where the electric power of an electronic device is monitored with the use electric power monitoring apparatus in one Example of this invention.

Explanation of symbols

1, 2, ..., n ... Electronic equipment 4 ... Power line 5 ... Used power monitoring device 6, 7, ..., m ... Used power measuring device 61, 71, m1, ... Reference voltage monitoring device 52, 62, 72, m2 ... Transmitting device 53, 63, 73, m3 ... Receiving device 54, 64, 74, m4 ... Microcomputer 15, 25, 35 ... Voltage Detecting device 211... Receiving circuit 212... Demodulating circuit 213... First memory circuit 214... First threshold memory circuit 215. ... notification means 218 ... stop signal transmission circuit of electronic device 1 219 ... second storage circuit 220 ... modulation circuit 221 ... transmission circuit 222 ... control circuit

Claims (9)

Measured by a plurality of electronic devices to which power is supplied from a power line connected to a commercial power source, a power consumption measuring device for measuring the power usage for each of the electronic devices via the power line, and the power consumption measuring devices. In the used power monitoring method comprising the used power monitoring device for monitoring the used power via the power line,
Receives power usage information conveyed from each electronic device,
In order to determine the possibility of failure of the electronic device based on a first threshold value for determining an abnormality in power consumption in each electronic device corresponding to the respective power consumption information and a value lower than the first threshold value Compared to the second threshold of
After determining whether the level exceeds the first threshold, the level between the first threshold and the second threshold, or the level lower than the second threshold, the determination result for the electronic device is notified. A method for monitoring the power consumption.   2. The power consumption monitoring according to claim 1, wherein each level of the threshold in the electronic device can be notified in at least one of a power consumption measuring device, a power consumption monitoring device, and an electronic device connected by a power line. Method. Measure the power usage of each of the plurality of electronic devices through a first coil wound around a core around which a power line is wound,
The power consumption monitoring according to claim 1 or 2, wherein the measured power consumption information is transmitted by being superimposed on a power line through a second coil wound around the core. Method. Measured by a plurality of electronic devices to which power is supplied from a power line connected to a commercial power source, a power consumption measuring device for measuring each power usage for the electronic device via the power line, and the power consumption measuring devices. In the used power monitoring system configured to use the used power monitoring device that monitors the used power through the power line,
First threshold value storage means for storing a first threshold value serving as a reference for determining an abnormality in the power measured by the power consumption measuring device;
A second threshold value storage means for storing a second threshold value, which is a reference for determining the possibility of a failure based on the power measured by the power consumption measuring device, and which is lower than the first threshold value;
Based on the power measured by the power consumption measuring device, the first threshold value and the second threshold value are compared, and the power consumption of the electronic device exceeds the first threshold value, the first threshold value and the second threshold value. Comparison judgment means for judging whether the level is between the threshold value and the level not exceeding the second threshold value;
A power usage monitoring system comprising:   The first threshold value storage unit, the second threshold value storage unit, and the comparison determination unit are provided in each of the used power measurement device and / or the used power monitoring device. Used power monitoring system.   The comparison and determination means sets the level at which the power consumption of the determined electronic device exceeds the first threshold, the level between the first threshold and the second threshold, and the level not exceeding the second threshold to the electronic device, The used power monitoring system according to claim 4 or 5, wherein notification is provided by notifying means provided in at least one of the used power measuring device and the used power monitoring device.   The power usage monitoring system according to claim 6, wherein the notification unit is a visual device including an LED display element or the like, or an audible device including a buzzer or the like.   When the comparison determination unit determines that the power consumption of the electronic device is at a level exceeding the first threshold, each stop signal transmission circuit of the electronic device that stops the power supply of the electronic device via the power line measures the power consumption. The power usage monitoring system according to claim 4, wherein the power usage monitoring system is provided in the device and / or the power usage monitoring device.   The electronic device, the used power measuring device, and the used power monitoring device each include a transmitting device and a receiving device, and can communicate with each other via a power line. Power usage monitoring system described in the section.

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