JP2006139929A - Electrical outlet tap or embedded electrical outlet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem, wherein in a conventional current for interrupting device in the event of an abnormality, when an abnormality detector detects abnormality, for example, when it detects vibrations and abnormal temperature rises in case of an earthquake, abnormality is interrupted for the first time, and that is at least an action that would not make the abnormal condition expand, and will not predict a danger. <P>SOLUTION: This electric outlet tap or this embedded electrical outlet is equipped with a reader 101 to read the data of an IC tag mounted in an outlet plug 1000 to be inserted in an electrical outlet, an abnormality-detecting part 102 for detecting abnormalities, when the outlet plug becomes loose and data reading becomes intermittent (intermittent action) for a fixed period of time, and an abnormality-reporting part 104 to notify the abnormality of the outlet plug. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an outlet tap or an embedded outlet that prevents a looseness of an outlet plug connected to an outlet tap or an embedded outlet using a non-contact IC tag or an IC chip and prevents an excess of rated capacity.

  As a conventional outlet tap or an embedded outlet, there is a current interruption device at the time of abnormality as shown in FIG. 5 (see, for example, Patent Document 1 and Patent Document 2).

  The example of this patent document 1 is demonstrated using FIG. In FIG. 5, an outlet tap 2 leading to the bus bar 1 of the low-voltage power source, an outlet plug 4 and an intermediate outlet plug 3 for connecting them are shown.

  An earth leakage breaker 11 is disposed at the starting end of the bus 1, and the outlet tap 2 is disposed at an appropriate place indoors via a branch breaker 12. The outlet tap 2 is provided with insertion electrode receptacles 21, 21 and an insertion ground electrode receptacle 22, and the insertion earth electrode receptacle 22 is grounded.

  The operation will be described below. When the abnormality detector 35 provided in the intermediate outlet plug 3 detects an abnormality, assuming that the outlet tap 2, the outlet plug 4 and the intermediate outlet plug 3 for connecting them are in use and are in use, for example, an earthquake When an abnormal vibration such as the above is detected or an abnormal temperature rise is detected, an electrical signal is applied to the switch unit 37 of the ground fault generating circuit, and the switch unit 37 is activated to be turned on between one power supply circuit and the ground circuit. A weak ground fault current flows. The circuit breaker 11 provided at the start of the bus 1 detects the unbalance of the power feeding circuit caused by this, and interrupts the current of the entire circuit.

  As a result, in the power feeding circuit provided with the earth leakage breaker 11 used conventionally, the intermediate outlet plug 3 provided with the abnormality detector 35 and the like can be coupled to any outlet tap 2 that is normally arranged. It is possible to detect anomalies in the desired location without requiring special installation work, especially heat generated by earthquakes or tracking, and to prevent electrical fires by operating the earth leakage breaker and cutting off the circuit current. It becomes.

  Moreover, the example of patent document 2 is demonstrated using FIG. In FIG. 6, the outlet portion 1A for one or a plurality of plugs, the total current value display means 2A currently used for each outlet portion 1A, and the preset predetermined current value of the display means 2A, Limit switch means 4A for shutting off the current source, acoustic means 3A for generating a warning sound at the same time as the shutoff, and reset for returning the limit switch means 4A to ON again after a predetermined cooling time of the outlet section 1A Means (not shown).

As a result, since the current flowing through the device operating via the outlet 1A is always displayed as a digital value, it is possible to always recognize how much margin the value has with respect to a predetermined rated value. An appropriate measure can be determined based on the value, and a margin for taking a measure to avoid turning off the limit switch 4A when the rated current is exceeded can be provided. In addition, when the turning-off operation is unavoidable, the occurrence of this abnormality can be known by blowing the buzzer at the same time, so that it is possible to move to an appropriate necessary means without missing the machine.
JP 9-327119 A JP 2001-118644 A

  However, in the current interruption device at the time of abnormality of Patent Document 1 described above, when the abnormality detector detects an abnormality, for example, the abnormality is interrupted for the first time when vibration or an abnormal temperature rise is detected during an earthquake, for example. It is an operation that does not expand the abnormal state at least, and does not predict danger. Therefore, when the house was old, it did not operate due to a failure caused by the dust of the earth leakage breaker, etc., and there was no occurrence of fire. In addition, since the leakage breaker of the power supply circuit is interrupted when the current is interrupted, the electrical equipment originally provided in the power supply circuit does not need to be interrupted, and it is troublesome to temporarily generate a power failure. There was a problem.

  Further, in the above-described safety-type outlet socket of Patent Document 2, when a device connected to the outlet tap exceeds a predetermined current capacity during operation, it is blocked by a limit switch means. An abnormal condition that a predetermined capacity value is exceeded once occurs, and an operation that does not expand the abnormality is performed, and danger prediction and prevention are not performed. In addition, although the current of the rated capacity abnormality can be confirmed by the display means, it is not always installed in a place where the outlet tap can be seen, and it cannot be said that it can always be used for prevention of danger prediction. . In addition, as in Patent Document 1, there is a problem that the abnormality is enlarged when a detection unit that detects an abnormal state occurs such as failure or malfunction.

  The present invention solves the above-mentioned conventional problems, and can perform preventive measures for predicting danger and enlightening that safe operations and countermeasures are taken. It is possible to prevent gaps due to loosening of the outlet plug or inadequate insertion during operation in advance and prevent dust from accumulating in the gaps and the like from tracking due to moisture or the like.

  In addition, the purpose is to provide a highly safe outlet tap or embedded type outlet that predicts danger so that equipment exceeding the rating will be used when plugged in and there is no such thing as overheating of the outlet tap or ignition of the cable. To do.

  In order to solve the above-described problems, in the present invention, the plug is inserted into an outlet in an outlet tap or an embedded outlet having an insertion port into which an outlet plug provided with an IC tag or an IC chip serving as a non-contact information card is inserted. A reading device for reading data of the information card attached to the outlet plug; an abnormality detecting unit for detecting an abnormality when the outlet plug is loose and data reading of the information card is intermittent (intermittent operation); and the abnormality It is set as the structure provided with the abnormality notification part which notifies.

  As a result, data reading is intermittent (intermittent) for a certain period of time when there is a looseness in the plug edge of the outlet plug, looseness or looseness of the receiving blade in the outlet, or if there is poor contact due to insufficient plug insertion. Therefore, it can be easily determined that the normal continuous data reading operation is an intermittent reading operation and the outlet plug is not normally inserted into the outlet tap. Therefore, it is possible to detect loose insertion and insufficient insertion at the stage of occurrence, so detection is possible earlier than detection after heat generation or overcurrent after contact failure occurs, and risk prediction and daily safety It can be used for countermeasures.

  Here, since an IC tag or an IC chip which is a non-contact information card is within a certain spatial distance for communication with the reading device, a communication error state occurs when the distance exceeds the distance. Accordingly, a phenomenon occurs in which communication is repeated normally and abnormally at the limit distance where communication is possible. Using this phenomenon, data reading is intermittent (intermittent) for a certain period of time by setting the sensitivity of the reading device as the communication limit distance when the outlet plug is not loosened or stuck deeply in advance. Can be.

  As described above, according to the present invention, it is possible to recognize that the device is connected to the outlet by reading the information of the IC tag or IC chip to be a contactless card with the outlet tap or the embedded outlet, It is possible to easily determine whether the connected outlet plug is loose or not depending on whether the connection state is maintained or intermittent (intermittent). For this reason, it is possible to predict a danger simply by the occurrence of a loose state before heat generation or leakage occurs due to poor contact due to looseness.

  The first invention is the above-mentioned information attached to an outlet plug inserted into an outlet in an outlet tap or an embedded outlet with an insertion port into which an outlet plug provided with an IC tag or IC chip serving as a non-contact information card is inserted. A reading device for reading card data, an abnormality detecting unit for detecting an abnormality when the outlet plug is loosened and the data reading of the information card is intermittent (intermittent) operation for a certain period, and an abnormality reporting unit for notifying the abnormality It is possible to recognize that the device is connected to the outlet, and to easily check whether the connected outlet plug is loose depending on whether the connection is maintained or intermittent (intermittent) Can be judged. For this reason, it is possible to predict a danger simply by the occurrence of a loose state before heat generation or leakage occurs due to poor contact due to looseness.

  The second invention relates to an outlet plug with an individual on / off switch having an insertion port for inserting an outlet plug into which an IC tag or an IC chip serving as a non-contact information card and an outlet plug is inserted. When the status grasping unit that grasps the information, the reading device that reads the data of the information card attached to the outlet plug inserted into the outlet, and the outlet plug is loosened, the data reading of the information card becomes intermittent (intermittent) operation for a certain period of time The on / off switch can be turned on by providing an abnormality detection unit that detects an abnormality and an abnormality notification unit that notifies that the outlet plug is abnormal from the on state of the state grasping unit and the abnormal state of the abnormality detection unit. Only the outlet plug of the device in the state will be detected and not used (individual on / off switch State) Looseness of the outlet plug of the device can be prevented from being falsely detected, and the user can detect the looseness only of the device that may cause danger in the device that is actually supplying electricity to the device. Is possible.

  According to a third aspect of the present invention, there is provided an outlet plug provided with an IC tag or IC chip serving as a non-contact information card and an outlet tap or an embedded outlet having an insertion port for inserting the outlet plug. A current detector that detects the current that flows when the card is inserted, a reader that reads data on the information card attached to the plug that is plugged into the outlet, and the outlet plug is loosened so that data reading on the information card is intermittent (intermittent) ) An abnormality detection unit that detects an abnormality when an operation occurs, and an abnormality notification unit that notifies that the outlet plug is abnormal from the state where the value of the current detection unit is equal to or greater than a certain current value and the abnormality state of the abnormality detection unit When there is an all-in switch on the device body side, it is actually operating (the standby state is also Note) If the current value that flows in the on state is set to a certain current value or more and a value greater than that value is detected, it is determined that the device is in the on state, and it is possible to prevent false detections such as loosening due to the off device. It is possible to detect an abnormal state such as looseness or gaps in the outlet plug only when the device is in the on state.

  According to a fourth aspect of the present invention, an outlet plug provided with an IC tag or an IC chip serving as a non-contact information card and an outlet tap or an embedded outlet having one or more insertion ports into which the outlet plug is inserted are inserted into an outlet. A reader that reads data from the information card attached to the outlet plug, a capacity grasper that calculates the sum of the rated capacities of the connected devices read by the reader, and the maximum rated capacity and capacity of the outlet tap or embedded outlet Outlet section tap having one or more outlets by providing a comparison section for comparing the value of the section and an alarm notification section for notifying an alarm when the value of the capacity grasping section exceeds the maximum rated capacity Or, when an outlet plug is inserted into an embedded outlet, the total rated capacity of the inserted devices Or it is possible to issue an alarm on whether it exceeds the maximum rated capacity of the implantable outlet, simply by inserting the outlet plug prior device use, it is possible risk prediction.

  According to a fifth aspect of the present invention, there is provided an outlet plug having an IC tag or an IC chip serving as a non-contact information card and an outlet tap with an individual on / off switch having one or more insertion ports into which the outlet plug is inserted. The status grasping unit that grasps the on / off status of the device, the reading device that reads the data of the information card attached to the outlet plug that is plugged into the outlet, and the connected device read by the reading device grasps the on state by the status grasping unit Operating device capacity calculation unit that calculates the sum of the rated capacities of connected devices only, a comparison unit that compares the maximum rated capacity of the outlet tap or embedded outlet and the value of the operating device capacity calculation unit, and the operating device By providing an alarm notification unit that notifies an alarm when the value of the capacity calculation unit exceeds the maximum rated capacity, It is possible to judge whether the rated capacity total value of the device with the switch turned on does not exceed the maximum rated capacity of the outlet tap, improving user convenience, and at the stage of turning on the switch at the time of use, It is possible to ensure safety by checking whether the maximum rated capacity is exceeded each time.

  The sixth invention is particularly applicable to an alarm device in which an abnormality notification unit or an alarm notification unit of an outlet tap or an embedded outlet according to any one of the first to fifth inventions is installed or a telephone number designated in advance. By using a notification device that notifies the specified address by telephone notification or via the Internet or by e-mail, when an abnormal condition is detected, an alarm notification unit is provided, so that the person is away from the installation location due to absence, etc. Even if it is, an abnormal state can be notified and appropriate measures can be taken. In addition, it is possible to notify the surroundings of abnormalities and take safety measures by turning off the outlet tap switch or distribution board breaker in the alarm notification section or by sounding an alarm such as a buzzer.

  According to a seventh aspect of the invention, in particular, the following configuration is obtained by reading data while switching the signal from the reading device of the outlet tap or the embedded outlet according to any one of the first to third aspects in a time division manner at the switching unit. Each unit can have only one part, and it is possible to provide an apparatus that is excellent in economic efficiency, small size and light weight.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2 show a configuration diagram of the outlet tap or the embedded outlet according to the first embodiment of the present invention.

  FIG. 1 shows a configuration of the outlet tap, and FIG. 2 shows an external view of the outlet tap.

  In FIG. 1, reference numeral 105 denotes an outlet tap having one or more insertion ports, which is detected in an intermittent (intermittent) state between the reading device 101 that reads data of the IC tag 1001 and the IC tag 1001 that is read by the reading device 101. An abnormality detection unit 102 that determines that there is an abnormality in the case, a state grasping unit 103 that grasps an on / off state of a switch (100S in FIG. 2) provided in each of the plurality of outlets of the outlet tap 105, and a state grasping unit 103 And an abnormality notifying unit 104 for notifying by alarm sound or communication that the outlet plug 1000 inserted in the outlet tap 105 is in a dangerous state such as loosening from the on / off state and the state of the abnormality detecting unit 102. The Reference numeral 100 denotes an information card detection unit of the outlet 1 of the outlet tap 105, which is built in the outlet tap 105 by the number of outlets. Reference numeral 106 denotes a current detection unit for making a determination based on the value of the current flowing in the on / off state instead of the state grasping unit 103, and reference numeral 100 </ b> B denotes an information card detection unit serving as the current detection unit 106 instead of the state grasping unit 103.

  Reference numeral 1000 denotes an outlet plug of a device connected to the outlet of the outlet tap 105, and reference numeral 1001 denotes an IC tag serving as an information card provided in the outlet plug 1000.

  In FIG. 2, P1 is an outlet plug for taking in power from the outlet tap 105, 100T is an outlet of the outlet tap 105, 101 is a reader for the outlet 100T, and 100S is an inlet for the outlet 100T. It is a switch off.

  In addition, although the outlet tap which has an on / off switch in each one or more insertion port was demonstrated here, the same embedded outlet tap is also the same.

  Next, the operation and action of the outlet tap or the embedded outlet having such a configuration will be described.

  As shown in FIG. 1, an outlet plug 1000 of a household electric appliance connected to supply power to the outlet tap 105 such as a household electric appliance is connected to an insertion port 100 </ b> T of the outlet tap 105. At that time, the information of the IC tag 1001 is read by the reading device 101, and it becomes possible to detect what kind of home appliance is connected. The information of the IC tag 1001 includes, for example, information such as an air conditioner, lighting, and television, the date of manufacture, the product number, the rated capacity, the product number, and the like depending on the type of home appliance. Is used, information necessary for the IC tag 1001 can be freely written, so that it can be used according to the function of the system or device.

  Next, the switch 100S of the outlet tap 105 is turned on, and the state grasping unit 103 detects the on state of the switch 100S. Since the reading device 101 can always read the data of the IC tag 1001 and there is no loss under the condition where the entering state is detected, the abnormality detection unit 102 does not detect it.

  After that, when the outlet plug 1000 is connected to the outlet tap for a long time and the outlet plug 1000 is loosened due to stress or the like, the information on the IC tag 1001 cannot be read intermittently (intermittently) or for a certain period by the reader 101. If it continues, the abnormality detection unit 102 performs abnormality detection.

  Furthermore, when the abnormality detection of the abnormality detection unit 102 is detected under the condition that the state grasping unit 103 detects that the switch 100S is turned on, the abnormality notification unit 104 notifies an alarm sound.

  In addition, although the abnormality notification part 104 reported alarm sound, you may light the alarm display lamp and LED, or may notify abnormality by radio | wireless or wired communication.

  In addition, the state grasping unit 103 detects the state of the switch, but by using this as the current detecting unit 106, the current flowing through the insertion port is detected and the power of the connected device is turned on by flowing over a certain value. It can be determined whether or not it has been turned on and off.

  Even when the state grasping unit 103 and the switch are not provided, it is naturally possible to detect an abnormality depending on whether the read data from the reading device 101 is intermittent (intermittent).

  By doing in this way, the danger prediction of a connection condition can be performed for every connection apparatus by performing in the insertion port of all the outlet taps 105. FIG.

(Embodiment 2)
Furthermore, Embodiment 2 of the present invention will be described with reference to FIG. 201 is a switching unit that inputs to the abnormality detection unit 102 while switching inputs from the plurality of reading devices 101 and the state grasping unit 103 at regular intervals, and 202 is equipped with one or more insertion ports equipped with the switching unit 201. It is an outlet tap. Other configurations are the same as those of the first embodiment, and thus description thereof is omitted.

  Next, the operation and action of the outlet tap or the embedded outlet having such a configuration will be described.

  The switching unit 201 switches the data of the IC tag 1000 read by the plurality of reading devices 101 provided at each insertion port of the outlet tap 202 and the state of each on / off switch detected by the state grasping unit 103 at regular intervals. The abnormality detection unit 102 detects whether the data from the reading device 101 is intermittent (intermittent) when the switch is turned on. If the data is intermittent (intermittent), the abnormality reporting unit 104 An audible alarm sounds to inform the resident.

  In addition, although the abnormality notification part 104 reported alarm sound, you may light the alarm display lamp and LED, or may notify abnormality by radio | wireless or wired communication. In addition, the state grasping unit 103 detects the state of the switch here, but the method of inputting the contact signal of the switch or the current flowing through the insertion port detects the current flowing through the plug and the connected device power supply It may be determined whether or not is turned on or off.

  In this way, the switching unit 201 switches the states from the plurality of state grasping units 103 to notify the abnormality detection unit 102 together with the data of the reading apparatus 101 to determine whether there is an abnormality, and the abnormality notification unit 104 notifies the abnormality. By doing so, the abnormality detecting unit 102 and the abnormality notifying unit 104 can be integrated in the outlet tap 202, and a significant cost reduction and downsizing can be realized.

(Embodiment 3)
Furthermore, Embodiment 3 of the present invention will be described with reference to FIG. Information on the IC tag 1001 provided on the outlet plug 1000 of the connected device includes at least the rated capacity of the device.

  301 extracts the rated capacity of the device from the data read by the reader 101 from the IC tag 1001 of the device connected to the outlet tap 304, and grasps the total rated capacity of the devices inserted into the plurality of insertion ports. It is a capacity grasping unit. Reference numeral 305 denotes an operating device capacity calculation unit that calculates only the rated capacity of the device that is in the input state by the state grasping unit 103 from the rated capacity of the device input to the capacity grasping unit 301, and 302 is the maximum rating that can be connected to the outlet tap 304. The comparison unit 303 compares the maximum rated capacity 302 and the total rated capacity of connected devices confirmed by the operating device capacity calculation unit 305. The comparison unit 303 calculates the operating device capacity calculation unit. This is an alarm notification unit that notifies an alarm when the total value of 305 exceeds the maximum rated capacity 302. 304 is an outlet tap which grasps the rated capacity of the connected device and generates an alarm when the maximum rated capacity is exceeded during use. Other configurations are the same as those of the first embodiment, and thus description thereof is omitted.

  Next, the operation and action of the outlet tap or the embedded outlet having such a configuration will be described.

  The rated capacity of each connected device is read from each IC tag 1001 by the reader 101, and the state grasping unit 103 grasps the state of the on / off switch of each insertion port. In the capacity grasping unit 301, only the rated capacity of each device included in the data read from the reading device 101 of the device connected to the insertion port is summed up. Further, the operating device capacity calculation unit 305 can extract only the rated capacity of the device that is switched on by the state grasping unit 103 from the capacity grasping unit 301 and grasp the rated capacity of the operating device that is turned on.

  Next, the comparison unit 303 compares the total rated capacity value of the devices that are actually used with the switch turned on, as determined by the operating device capacity calculation unit 305, and the maximum rated capacity 302 that can be connected to the outlet tap 304. When the value of the maximum rated capacity 302 is exceeded, the alarm notification unit 104B sounds an alarm sound.

  In addition, although the abnormality notification part 104 reported alarm sound, you may light the alarm display lamp and LED, or may notify abnormality by radio | wireless or wired communication. In addition, the state grasping unit 103 detects the state of the switch here, but the method of inputting the contact signal of the switch or the current flowing through the insertion port detects the current flowing through the plug and the connected device power supply It may be determined whether or not is turned on or off.

  By doing this, when the device connected to the outlet tap is actually switched on and power is supplied to the device, the rated capacity of the device exceeds the maximum rated capacity of the outlet tap. It is possible to determine whether or not the device is in danger, notify the alarm before the device starts to operate, and predict the danger.

  Further, the operating device capacity calculating unit 305 may be bypassed and input from the capacity grasping unit 301 to the comparing unit 303. In this case, since the alarm can be issued based on whether the total rated capacity of the inserted devices exceeds the maximum rated capacity of the outlet tap or embedded outlet, it is dangerous to insert the outlet plug before using the device. Prediction is possible.

  The outlet tap described above may be an embedded outlet such as a wall or floor.

  As described above, according to the present invention, the outlet plug inserted into the outlet tap can be detected at an early stage to detect looseness, poor insertion, or usage exceeding the rated capacity, and can predict and notify the danger. This can be applied to applications such as power outlets for industrial use such as buildings and factories, in addition to outlet taps and embedded outlets in the home.

Configuration diagram of outlet tap of embodiment 1 of the present invention External view of outlet tap according to Embodiment 1 of the present invention Configuration diagram of outlet tap of embodiment 2 of the present invention Configuration diagram of outlet tap of embodiment 3 of the present invention Configuration diagram in the conventional example External view of conventional example

Explanation of symbols

105, 202, 304 Outlet tap 100, 100B Information card detection unit 100T Insert port 100S Individual switch 101 Reading device 102 Abnormality detection unit 103 State grasping unit 104 Abnormality reporting unit 104B Alarm reporting unit 106 Current detection unit 201 Switching unit 301 Capacity grasping Section 302 Maximum rated capacity 303 Comparison section 305 Operating equipment capacity calculation section 1000 Outlet plug 1001 IC tag

Claims (7)

Reading to read the data of the information card attached to the outlet plug to be plugged into the outlet plug in the outlet tap or embedded outlet with an insertion port for inserting the outlet plug provided with the IC tag or IC chip as a non-contact information card An outlet tap comprising an apparatus, an abnormality detecting unit for detecting an abnormality when the outlet plug is loose and data reading of the information card is intermittent (intermittent) operation for a certain period, and an abnormality reporting unit for notifying the abnormality Or an embedded outlet. In the outlet tap with an individual on / off switch with an insertion port for inserting an outlet plug provided with an IC tag or IC chip as a non-contact information card, a state grasping unit for grasping an on / off state of the outlet switch, and an outlet A reading device that reads data of the information card attached to the outlet plug inserted into the socket, and an abnormality detection unit that detects an abnormality when the outlet plug is loosened and the data reading of the information card is intermittent (intermittent) operation for a certain period of time And an outlet tap or an embedded outlet provided with an abnormality reporting unit for notifying that the outlet plug is abnormal from the on / off state of the state grasping unit and the abnormal state of the abnormality detecting unit. Detects the current that flows when an outlet plug of a connected device is inserted into an outlet in an outlet tap or an embedded outlet with an insertion port for inserting an outlet plug provided with an IC tag or IC chip as a non-contact information card Abnormal when the current detection unit that reads, the reading device that reads the data of the information card attached to the plug inserted into the outlet, and the outlet plug loosens and the data reading of the information card becomes intermittent (intermittent) operation for a certain period of time An outlet tap or embedded with an abnormality detection unit that detects the abnormality and an abnormality notification unit that notifies that the outlet plug is abnormal from the state where the value of the current detection unit is equal to or greater than a certain current value and the abnormality state of the abnormality detection unit Type outlet. In an outlet tap or an embedded outlet with one or more insertion ports into which an outlet plug provided with an IC tag or IC chip as a non-contact information card is inserted, the information card attached to the outlet plug inserted into the outlet Comparing the reading device that reads data, the capacity grasping unit that calculates the sum of the rated capacities of the connected devices read by the reading device, and the maximum rated capacity of the outlet tap or embedded outlet and the value of the capacity grasping unit An outlet tap or an embedded outlet provided with a comparison section and an alarm notification section for notifying an alarm when the value of the capacity grasping section exceeds the maximum rated capacity. The state grasping the on / off state of the outlet switch in the outlet tap with the individual on / off switch with one or more insertion ports to insert the outlet plug provided with the IC tag or IC chip as a non-contact information card And a reading device that reads data of the information card attached to an outlet plug that is inserted into an outlet, and only a connected device that is grasping the on state by the state grasping unit among the connected devices read by the reading device. The operating device capacity calculation unit that calculates the total value of the rated capacities, the comparison unit that compares the maximum rated capacity of the outlet tap or embedded outlet and the value of the operating device capacity calculation unit, and the maximum value of the operating device capacity calculation unit An outlet tap or embedded outlet with an alarm notification unit that notifies you when the rated capacity is exceeded. The abnormality notification unit or the alarm notification unit is an alarm device that is installed or a notification device that notifies a specified address by telephone notification or notification via the Internet or by mail to a designated telephone number. 6. The outlet tap or embedded outlet according to any one of items 5 to 6. Only the reading device of the outlet tap or the embedded outlet is arranged as many as the number of insertion ports, provided with a switching unit, and operates as follows: an abnormality detection unit, an abnormality notification unit, a state determination unit, a current detection unit, a capacity determination unit, a comparison unit The outlet tap or embedded outlet according to any one of claims 1 to 3, wherein each of the device capacity calculation unit and the alarm notification unit is configured by one.

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