JP2018074661A - Seismic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an energized fire due to an earthquake. SOLUTION: A seismic sensor 70, a control switch 42 provided between an outlet 30N and a load 34N, an earth leakage generation circuit 110 connected immediately before the control switch for generating an earth leakage current flowing through the outlet, and It is composed of a control switch and a control circuit 50 that controls an electric leakage generation circuit based on the output of the seismic sensor. When the control circuit determines that the vibration is equal to or greater than the predetermined vibration based on the output of the seismic sensor, the control switch is turned off and the power supply from the service line 14 is turned on even if the waiting time Ta elapses from the vibration determination timing. When not cut off, the earth leakage breaker is activated by the earth leakage generation circuit. The earth leakage breaker does not operate immediately after the earthquake to ensure evacuation preparation such as lighting at night time. [Selection diagram] Fig. 2

Description

  The present invention relates to a seismic sensing device capable of preventing an energized fire in a home while saving lives such as evacuation when a vibration exceeding a predetermined level occurs.

  The recent Japanese archipelago is under threat from earthquakes. Since the Hanshin-Awaji Earthquake, there have been warnings of damage caused by energizing fires, as well as damage such as the collapse of houses due to the shaking and the loss of houses due to the tsunami.

  An energized fire is a power outage caused by an earthquake, and combustible materials are generated by the collapse of a house, furniture, fixtures, etc. on a heat source electrical appliance such as a heater, electric heater, or iron used until then. This is a fire caused by re-energizing the heater and heat source after the power is restored, and the fire damage and human damage caused by this fire are enormous.

  In order to prevent the energization fire accompanying the occurrence of an earthquake as much as possible, seismic devices have been developed that operate the earth leakage breaker as soon as the occurrence of an earthquake is detected to cut off the energization of the heat source electrical product (Patent Documents 1, 2, 3, etc.) .

  Among them, Patent Document 1 and Patent Document 2 both relate to an earth leakage breaker knob (lever) and the like with an earthquake detection means having a mechanical means for detecting a shake, and when an earthquake occurs, the earthquake detection means is used. The lever is operated.

  Patent Document 3 is a device that detects shaking by a seismic sensor and shuts off power to a load connected to the device when it detects an earthquake, and additionally performs heating prevention by tracking and measures against lightning strikes. In any of the patent documents, when an earthquake occurs and the shaking is detected, the earth leakage breaker is immediately activated to cut off the electric power supplied indoors from the lead-in wire to prevent an energizing fire.

Patent No. 4511132 Japanese Patent No. 4712362 Japanese Patent No. 554085

  By the way, in all of Patent Documents 1 to 3 described above, when an earthquake occurs and the shaking is detected, the power is immediately cut off to turn off the power of the electrical product. It can be said that it is an effective means.

  However, earthquakes do not always occur during the day. Earthquakes often occur in the evening, at night or before sunrise. In the event of an earthquake at night, etc., if the earth leakage breaker is turned off immediately, all lights will be turned off, making it difficult to conduct safety checks prior to evacuation and making the blame in the dark very difficult.

  Also, if the earth leakage breaker is not activated immediately after an earthquake occurs, that is, if the earth leakage breaker is activated with a certain time lag, a certain time required for evacuation (called waiting time Ta) will occur. If the power supply from the lead-in line stops before it has passed, that is, if a general power outage (hereinafter referred to as a power outage) occurs, the earth leakage breaker is activated because no electric leakage occurs in this power outage state. Can not do it.

  Therefore, when a power source of an electrical product having any heat source among electrical products connected to a wall outlet derived from a plurality of safety breakers is turned on, a subsequent energization fire is caused.

  The present invention solves such a problem of energizing fire due to an earthquake, etc., and when a vibration exceeding a predetermined vibration is detected, an electric source having a heat source connected to a wall outlet where the seismic device is installed. The power supply of the product is shut off immediately to prevent an energizing fire, and the power to the illuminator necessary for evacuation is secured for a certain period of time, and then the earth leakage breaker is activated to shut off all power after the distribution panel 20 It is what you do. In addition, if a power outage occurs before a certain period of time (waiting time Ta), consider a fire accident that is likely to occur due to a collapse of the house, etc., and when the energization is detected thereafter, the earth leakage breaker is activated to cut off the energization It is what you do.

In order to solve the above-mentioned problem, in the seismic device according to the invention of claim 1, a seismic sensor,
A control switch provided between an outlet and a load having a heat source;
A leakage generating circuit connected immediately before the control switch;
A control circuit that controls the control switch and the leakage generation circuit based on the output of the seismic sensor,
When the control circuit determines that the vibration is equal to or greater than a predetermined vibration based on the output of the seismic sensor, the control switch is turned off, and the lead-in line is drawn even if a predetermined waiting time elapses from the vibration determination timing. When the power from is not cut off, the leakage breaker is operated by the leakage generation circuit.

  In the seismic sensing device according to the second aspect of the present invention, an acceleration sensor is used as the seismic sensor, and the collapse of the house due to an earthquake shake, earthquake, typhoon, landslide, tornado or the like is detected.

  According to a third aspect of the present invention, a relay switch is used as the control switch, and the relay switch is detected by a relay control signal output from a control circuit when detecting a seismic sensor output exceeding a predetermined vibration. Operates on the power-off side.

  In the seismic sensing device according to the present invention as set forth in claim 4, before the leakage generation circuit is activated, the alarm means for the at-home person is driven.

  In the seismic sensing device according to claim 5 of the present invention, when the control circuit determines that the vibration is equal to or greater than a predetermined vibration based on the output of the seismic sensor, the control switch is turned off and the waiting time is When a power failure occurs, the leakage breaker is activated by the leakage generation circuit after power is restored.

  According to a sixth aspect of the present invention, the alarm means is driven before the leakage generation circuit is activated.

  The seismic sensing device according to claim 7 is characterized in that timer means is provided in association with the control circuit, and the control switch is controlled by the timer means together with the seismic sensing function. And

  As described above, in the seismic sensing device according to the present invention, when a vibration exceeding a predetermined vibration is detected, the power source of the electrical product having the heat source connected to the wall outlet where the seismic sensing device is installed is immediately turned on. Shut off to prevent energized fire and help to evacuate safely by securing power to lighting fixtures, etc. that are indispensable for night evacuation, and then the leakage breaker was activated and the power failure was restored It is designed to prevent electrical fires at times.

According to this, in addition to being able to instantly shut off the power supply of an electrical product having a heat source connected to a wall outlet where the seismic device is installed and to prevent an energizing fire, When sufficient safety inspection work is completed while ensuring lighting, the earth leakage breaker will automatically operate to shut off all indoor power. Of course, when a power failure occurs during the waiting time, the leakage control to the leakage breaker is postponed, and when the power failure is restored, the leakage breaker is operated after the restoration, so there is no possibility of an energizing fire after the restoration of the power failure.
When safety is ensured, the earth leakage breaker is manually operated to restore the household power supply, and at the same time, the restoration switch provided on the seismic device is operated to return to the standby state (initial state).

It is a systematic diagram which shows an example when the seismic device which concerns on this invention is applied. It is a systematic diagram showing an example of a seismic device according to the present invention. It is a block diagram which shows an example of the seismic device which concerns on this invention. It is a timing chart for explaining the operation. Similarly, it is a timing chart for explaining operations.

  Next, an example of the seismic device according to the present invention will be described with reference to the drawings. FIG. 1 is a system diagram showing an application example when the seismic sensing device 10 according to the present invention is configured to be detachable, and electric power from a commercial AC source 12 is provided to each home via a home lead wire 14. The supplied distribution board 20 is supplied.

  The distribution board 20 has an ampere breaker 22 as is well known, and as shown in the figure, the electric power from the lead-in wire 14 is supplied to the earth leakage breaker 24 through the ampere breaker 22, and the output of the earth leakage breaker 24 is It is led to the respective wall outlets 30A to 30N via safety breakers 26 (26A to 26N) provided for each room. Electric appliances (electrical devices) 34A to 34N, which are loads, are set in the wall outlets 30A to 30N as necessary.

  In this example, the seismic sensing device 10 according to the present invention is inserted into a wall outlet 30N in which an electrical product 34N having a heat source such as an electric heater is set among a plurality of wall outlets 30, thereby detecting an earthquake.・ Power is cut off and leakage breaker is controlled.

  Since the seismic sensing device 10 shown in FIG. 1 is detachable (plug-in type), it is inserted between the electrical product 34N as a load and the wall outlet 30N. Therefore, it has an AC plug and an AC outlet. The seismic sensing device 10 is used in the load 34 where an electrical product having a heat source that causes a fire is inserted particularly when an earthquake or the like occurs.

FIG. 2 is a system diagram showing an example of the seismic sensing device 10 according to the present invention. In this example, the seismic device 10 is applied to a device having a timer function.
In the first place, since the frequency of earthquakes themselves is low, in addition to functions such as power interruption at the time of an earthquake occurrence and leakage breaker operation, a timer (timer means) as a separate function is installed in the same circuit, so that the normal vibration below the specified vibration level In the (normal) life mode, it is a highly efficient device that can be used as a timer.

  The seismic sensing device 10 includes the AC plug 32N and the AC outlet 36 as described above. A plug 39 (see FIG. 1) of an electrical product 34N as a load is inserted into the AC outlet 36, and an AC plug 32N is inserted into the wall outlet 30N. The AC plug 32N and the AC outlet 36 are unitized as will be described later.

  A control switch 42 and its control circuit 50 are provided between the AC plug 32N and the AC outlet 36. The control switch 42 is provided to forcibly cut off the power supply path to the load 34N when an earthquake occurs, and a latching relay type switch or the like can be used.

  When a latching relay type switch is used as the control switch 42, control such as energization to the latching relay coil 43 is performed by a control signal output from the control circuit 50. The power (commercial AC source) supplied to the AC plug 32N is supplied to the above-described control switch 42, and is also supplied to the power circuit 52 in the control circuit 50 and converted to DC.

  The DC power is supplied as an operating power for the circuit body 60 of the control circuit 50 via the storage capacitor 54. The power storage capacitor 54 is used as an emergency power supply after an earthquake occurs, and can store the occurrence of a power failure within the waiting time for several tens of minutes after the end of the waiting time in the memory even during the power failure. The capacity is used.

  A surge current absorption element (arrester product name) 51 and the like connected to the power circuit 52 is for lightning countermeasures, and is used to flow a lightning surge current. It is directly connected to the AC 100V power line La, and has a predetermined voltage. When the above voltage is applied to the power supply line La, the voltage more than that is absorbed (absorbed by shorting the power supply line La) so that an excessive voltage is not applied. For this reason, the arrester 51 also functions as a circuit breakdown prevention device for the control circuit 50 in the subsequent stage.

  An output from the seismic sensor 70 is supplied to the circuit body 60, and various controls are performed depending on the presence or absence of the output. Therefore, the circuit body 60 uses a microcomputer. The operation and the like will be described later including the seismic sensor 70.

  A plurality of operation switches 80 are provided in association with the circuit body 60. Among them, the switch 82 is a return switch, and is used to return the control switch 42 to a normal state when the load control due to the earthquake is finished.

  The switch 84 is a test switch and is a switch for checking whether the seismic sensing device 10 operates normally. The release switch 86 is an operation release switch for the earth leakage breaker 24, and the timer switch 88 sets the timer operation.

  It should be noted that the configuration of the switch 80 can also be used as a function by devising a pressing method, a detection method, or the like.

  The timer operation is a set of an on-timer (turns on the power after the set time) or an off-timer (turns off the power after the set time) and a set time. These operations are performed by one switch 88. In this example, each time an operation is performed, the on-timer time is switched to 0 minutes, 30 minutes, 60 minutes, 90 minutes, for example, in units of 30 minutes, and thereafter, the off timer time set mode is set at the same time interval. .

  A plurality of indicator lamps (LED, etc.) 92 to 96 are provided in the circuit body 60 so that the set mode of the timer time can be seen every unit time, so that the timer set time can be visually confirmed. For example, the indicator lamp 92 is used for displaying 30 minutes, the indicator lamp 94 is used for displaying 60 minutes, and the indicator lamp 96 is used for displaying 90 minutes.

  The other indicator lamps 98 are power lamps for confirming the operation of the seismic sensing apparatus 10. A DC power source from the power circuit 52 and the storage capacitor 54 is used as the power source for the indicator lamps 92 to 98.

  The circuit body 60 is further provided with an alarm means 100. After an earthquake occurs, in this example, immediately before the earth leakage breaker 24 is operated, the power is forcibly cut off to a person at home, and an electric fire or the like is caused in advance. As a measure to prevent, the breaker cutoff is warned by a buzzer or voice.

  Next, a configuration for forcibly operating the earth leakage breaker 24 will be described. In this example, a leakage generation circuit 110 including a resistor 112 and a switching element 114 is provided between a power supply line La supplied before the control switch 42 and the ground, and the switching element 114 can be turned on / off from the circuit body 60. Controlled by a control signal.

  The earthquake breaker 24 is artificially activated by sensing an earthquake and turning on the switching element 114 when a predetermined vibration or more (for example, a seismic intensity of 5 or more) is turned on to forcibly supply a leakage current to the power line La. The resistor 112 is a current limiting resistor for limiting the leakage current.

  A temperature sensor 116 provided in the circuit body 60 is a sensor for detecting a tracking phenomenon. In the tracking phenomenon, dust accumulates in the gap between the outlet and the plug, and the dust absorbs moisture in the air. When moisture is absorbed, the contact surface corrodes and the contact resistance between the plug and the outlet increases, generating heat. The heat generation temperature at this time is measured, and when the output from the temperature sensor 116 reaches a certain temperature or more, the control switch 42 cuts off the power to prevent a fire.

  A motion sensor (acceleration detection sensor) such as a gyroscope or a vibration sensor is used as the above-described seismic sensor 70. In this example, a small gyro that can be mounted and fixed on the lower substrate 62A shown in FIG. 3 is used.

  Detection information from the seismic sensor 70 is processed by the microcomputer 60, and it is discriminated whether it is a temporary shake (vibration) caused by an impact other than an earthquake or an earthquake, and it operates with a slight external impact. I try not to. Further, when the seismic sensor 70 is inclined at a predetermined angle, for example, 20 degrees or more from the time of installation, it is regarded as a vibration due to the collapse of the house, and the control switch 42 is operated immediately. Further, the earth leakage breaker 24 is also immediately cut off to prevent a fire due to a collapse of a house that may occur immediately.

  As for the cause of the collapse of the house, it works as an energizing fire prevention device not only in the event of an earthquake but also in the event of a collapse such as a typhoon, landslide, or tornado.

  FIG. 3 shows an example of the external shape of the seismic device 10 used by being inserted into the wall outlet 30N.

  The seismic device 10 includes a lower case 60A, an upper case 60B, and a control circuit 50 housed in the upper and lower cases.

  In the lower case 60A, an AC plug opening window 61 to be inserted into the wall outlet 30N is formed, and a plurality of mounting bosses 65 for mounting and fixing the main unit are integrally formed.

  The control circuit body 50A has two upper and lower substrates 62A and 62B, both of which are connected by a boss 66, and a motion sensor 70 that is a seismic sensor and an alarm means 100 are attached to the lower substrate 62A. In addition to the circuit body (microcomputer) 60 constituting the control circuit 50, a plurality of operation switches 80 and indicator LEDs 90 corresponding thereto are attached and fixed to the substrate 62B, and the side surface of the upper substrate 62B is further fixed. A plug / outlet unit 38 is arranged in the vicinity. A hole for the operation switch 80, a window hole for the indicator lamp 90, and the like are formed in the upper case 60B.

  Then, operation | movement of the seismic device 10 mentioned above is demonstrated with reference to FIG. 4 and FIG. FIG. 4 is an example of operation when the earth leakage process is completed before a power failure occurs due to an earthquake, and FIG. 5 is an example of the operation when the earth leakage process is not completed before the power supply is restored after the power failure.

  In this example, it is assumed that either an on-timer for operating an electrical product as a load or an off-timer for turning off the electrical product is set.

  When shaking occurs (FIG. 4A), the shaking corresponding to the strength and length is detected by the seismic sensor. The seismic sensor output is analyzed by the microcomputer 60 in the next stage to analyze whether the shake is caused by an earthquake, and when it is determined to be an earthquake, a pre-set vibration (for example, an intensity of seismic intensity 5 or more ( It is determined whether or not the magnitude)) or more. When the vibration is equal to or greater than the set vibration, a discrimination signal (determination output) due to the earthquake is obtained (B in the figure).

  A control signal generated based on this determination signal flows to the latching relay coil 43 as a relay control signal (relay energizing signal). The latching relay coil 43 is energized by this relay control signal, and the control switch 42 is instantaneously and forcibly switched to the power-off side. With this series of operations, the electric product 34N connected to the wall outlet 30N is turned off (FIG. C). This can prevent energization fires (electric fires) caused by electrical products.

  Since the control switch 42 is configured by a latching relay, even if the latching relay coil 43 is de-energized, the immediately previous switching state is maintained, so that the power supply to the electrical product 34N is maintained in a cut-off state. . In order to return the control switch 42 to the state shown in FIG. 2, the release switch 86 described above may be operated.

  The control signal generated based on the discrimination output is also used as a timer control signal, and a timer (not shown) is reset (D in the figure). This timer control by the circuit body 60 can surely prohibit the timer operation after the on-time or off-time, so that it is safe even when the timer is set.

  Next, as a result of analyzing the seismic sensor output from the seismic sensor 70, a predetermined waiting time Ta (for example, 10 to 15 minutes) from the vibration determination timing determined to be a shaking with a seismic intensity of 5 or more (D, E in the figure). ) Has passed, the power supply state from the lead-in wire 14 side is determined.

  If the power failure has not yet occurred even after the waiting time Ta has elapsed, the alarm means 100 and the leakage generation circuit 110 are then operated. For this reason, when the earthquake is first activated, the buzzer (not shown) constituting the alarm unit 100 is activated after the waiting time Ta elapses to notify the occupant of the abnormal state. At the same time, a voice notification means (not shown) built in the warning means 100 is operated, or a voice generated in the microcomputer 60 is notified that the leakage breaker 24 is forcibly operated and saved. Prompt (Fig. E).

  As a voice message, for example, a short message such as “Operate the breaker and turn off the power in the house. This message allows the home-stayer to safely exit without checking the operating state of the load 34 or operating the earth leakage breaker 24.

  After the alarm means 100 is operated, the electric leakage operation is started after a time of 1-2 minutes. In this example, a switching signal (not shown) is generated from a discrimination signal in which the presence or absence of a power failure is detected in the microcomputer 60, and the switching element 114 is turned on by this switching signal. When the switching element 114 is turned on, a slight leakage current flows between the power supply line La and the ground (FIG. F). The earth leakage breaker 24 is activated by the earth leakage current, and the entire power supply in the house is forcibly cut off. As a result, it is possible to prevent energization fires associated with energization.

  The reason why the earth leakage breaker 24 is operated after a certain time without operating at the same time as the occurrence of the earthquake is based on the following reason.

  If the earth leakage breaker 24 is automatically turned off when an earthquake with a seismic intensity of 5 or more occurs, all the lights in the room will be lost when an earthquake occurs at night, etc., making it difficult to perform a safety check before evacuation. Even the emergency illuminator that was installed in the facility will not function, and if the hand is too dark, evacuation will be difficult even for healthy people. The darkness is very psychologically uneasy, making it difficult to evacuate in a normal state, and even more difficult for the elderly, children, and care recipients.

  Therefore, when the preparation for evacuation / guidance is complete, the earth leakage breaker 24 is automatically turned off to shut off all power sources in the home. If it carries out like this, the power supply of all the electric products 34 connected to the safety breaker 26 can be turned off, and the possibility of an energization fire can be eliminated.

  When the earthquake has stopped and safety has been confirmed, the earth leakage breaker 24 is manually operated to restore the household power supply. At the same time, the recovery switch 82 provided in the circuit body 60 is operated to return the seismic sensing device 10 to the standby state (initial state).

  By the way, when the electric power is supplied to the home even after the waiting time Ta elapses, the operation is as described above. A case where a power failure occurs without waiting for the waiting time Ta will be described below.

  In this case, as described above, the electrical product 34N connected to the specific wall outlet 30N is automatically powered off to ensure safety. However, the load connected to the other wall outlet 30 can be secured. Since some of the power supplies 34 are still on, there is a concern about secondary fire after power restoration.

  5A to 5D are the same as the above example. Assume that a power failure occurs near the time unspecified time Tb (time t6) before the waiting time Ta elapses from the earthquake determination timing (Fig. E).

  Since the circuit main body 60 detects the power failure that occurred at time t6 as shown in FIG. 5F, the circuit main body 60 enters a standby state for leakage current processing at this time t6.

  Next, when the restoration of the power source is detected in the circuit body 60 (F in the figure, time point t7), the alarm unit 100 is activated to perform the same operation as described above, that is, the buzzer is sounded to shift to the electric leakage treatment. Along with the notification, the evacuation notification is performed by voice (G in the figure). Thereafter, the leakage generation circuit 110 is operated to cause a leakage current to flow (H in the figure).

  Since this earth leakage current is detected by the earth leakage breaker 24, the earth leakage breaker 24 is operated, and all power sources in the home are shut off to forcibly cause a power failure (I in FIG. 1). As a result, even if there is no person in the building after the power failure is restored, the power supply to the home is automatically cut off and the power failure state is forced. The subsequent processing (breaker operation after confirming the state of the load 34 and standby processing of the seismic sensing device 10) is the same as described above.

  As described above, if the microcomputer 60 stores the power failure state and the operation to the earth leakage breaker 24 is suspended, and the earth leakage breaker 24 is activated when the power failure is restored, the secondary that is feared when the power failure is restored. A fire (energized fire) can be reliably prevented.

  As described above, in the present invention, the outlet having the seismic function is further devised, and when the predetermined vibration is set, the earth leakage breaker is not suddenly activated, but the outlet to which the heat source electrical product is connected first. Turn off the power to prevent re-energization of the electrical products connected to it, and after a time required for evacuation, for example after 15 minutes (Ta), if a power outage has not yet occurred, warn with a buzzer after power recovery 1 The earth leakage breaker is automatically activated only once in response to earthquake vibration. And if a power failure occurs within 15 minutes (Tb), after re-energizing, the earth leakage breaker 24 is operated after warning and the energization to the house is cut off.

  When the timer is set in a normal state (normal life mode) in which no more than a predetermined vibration is detected, a timer operation that activates the electrical product 34 or stops the operation of the electrical product 34 after the timer setting time has elapsed. Is done.

  The embodiment described above is a case where the present invention is applied to a detachable seismic device, but the present invention can also be applied to a built-in seismic device built in a wall outlet. In this case, the upper and lower cases 60A and 60B shown in FIG. 3 are used as a wall outlet casing, and the outlet 36 is used as the wall outlet 30N.

  Further, in the above-described embodiment, even in the normal life mode with a predetermined vibration or less, there is no risk of energizing fire due to the tracking phenomenon, and in the event of thunder, the electronic circuit such as the circuit body 60 is prevented from being destroyed. Therefore, it is possible to realize a multifunctional seismic device that has various functions in addition to the seismic function.

  The present invention is suitable for application to a seismic sensing device that can prevent an energized fire in a home or the like when an earthquake occurs.

12 ... Commercial AC source (power supply)
20 ... Distribution board 24 ... Earth leakage breaker 30 ... Wall outlet 34 ... Load (heat source electrical product)
DESCRIPTION OF SYMBOLS 10 ... Seismic device 42 ... Control switch 43 ... Latching relay coil 50 ... Control circuit 60 ... Circuit body 70 ... Seismic sensor 80 ... Operation switch 90 ... Display Light 100 ... Alarm means 110 ... Electrical leakage circuit

Claims (7)

A seismic sensor,
A control switch provided between an outlet and a load having a heat source;
A leakage generating circuit connected immediately before the control switch;
A control circuit that controls the control switch and the leakage generation circuit based on the output of the seismic sensor,
When the control circuit determines that the vibration is equal to or greater than a predetermined vibration based on the output of the seismic sensor, the control switch is turned off, and the lead-in line is drawn even if a predetermined waiting time elapses from the vibration determination timing. An earthquake-sensing device characterized in that when the electric power from is not cut off, the leakage breaker is operated by the leakage generation circuit. The seismic sensor uses an acceleration sensor,
The seismic sensing device according to claim 1, wherein a collapse of a house due to an earthquake shake, an earthquake, a typhoon, a landslide, a tornado, or the like is detected. The control switch uses a relay switch,
2. The seismic sensing device according to claim 1, wherein when a seismic sensor output exceeding a predetermined vibration is detected, the relay switch is actuated to the power-off side by a relay control signal output from the control circuit. 2. The earthquake-sensing device according to claim 1, wherein a warning means for a person at home is driven before the electric leakage generating circuit is activated. When the control circuit determines that the vibration level is equal to or greater than a predetermined vibration based on the output of the seismic sensor, the control switch is turned off, and when a power failure occurs during the waiting time, The seismic sensing device according to claim 4, wherein the earth leakage breaker is operated. 6. The seismic sensing device according to claim 5, wherein the alarm means is driven before the leakage generation circuit is activated. 2. The seismic sensing device according to claim 1, wherein timer means is provided in association with the control circuit, and the control switch is controlled by the timer means together with a seismic function.

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