JP3885823B2 - Power interruption system - Google Patents

Description

  The present invention relates to a power interruption system that stops power supply in the event of a disaster such as an earthquake.

  Conventionally, this type of power interruption system is generally as described in Patent Document 1. The configuration will be described below with reference to FIG.

  As shown in FIG. 17, a seismic device 1 that detects vibration, a feature amount extraction unit 2 that extracts a feature amount of an earthquake from the output signal of the seismic device, and is an earthquake by performing fuzzy inference from feature amount data? It was comprised from the reasoning part 3 which discriminate | determines whether or not, and the control means 5 which controls supply of electric power with the circuit breaker 4. FIG. Here, 6 is a power line.

In the above configuration, the seismic vibration is discriminated from the signal of the seismic device 1 by using fuzzy reasoning so that the power supply is interrupted by using a circuit breaker when an earthquake occurs.
JP-A-4-322120

  However, the conventional configuration has a problem that a seismic device has to be newly installed. And since it is installed in various places, the response of the seismometer to the earthquake varies greatly depending on the installation place, and it is very difficult to estimate the earthquake vibration corresponding to various places.

The present invention solves the above-mentioned problem, receives abnormal vibration information from a seismic device installed in an existing gas meter, etc., and shuts off the power in the event of a disaster such as an earthquake by shutting off the power shut-off switch The goal is to do it and to achieve it with reduced construction.

To achieve the above object, the power shutoff system according to the present invention includes a gas flow rate measuring means for measuring a gas flow rate, a seismic device for detecting vibration, and an abnormality determination for determining an abnormality when the seismic device detects a predetermined vibration. Means, a transmission means for transmitting an abnormality determination signal from the abnormality determination means, a gas meter having a gas shut-off valve for blocking a gas flow by the abnormality determination signal, and an abnormality determination signal from the transmission means provided in the gas meter. An abnormality determination comprising: a receiving means for receiving; a power cut-off switch for cutting off power supply to a specific device; and an electric breaker provided with a control means for cutting off the power cut-off switch according to an abnormality determination signal received by the receiving means. Occasionally, the power supply to a specific device is cut off after the gas supply is cut off.

According to the power cut-off system of the present invention, it is possible to stop gas appliances and the like, as well as to stop electrical appliances that cause fires such as electric heaters, without installing a new seismoscope,
It is possible to prevent the occurrence of secondary disasters such as earthquake fires .

The present invention relates to a gas flow rate measuring unit for measuring a gas flow rate, a seismic device for detecting vibration, an abnormality determining unit for determining an abnormality when the seismic device detects a predetermined vibration, and an abnormality determination from the abnormality determining unit. Transmitting means for transmitting a signal, gas meter having a gas shut-off valve for shutting off the gas flow by the abnormality determination signal, receiving means for receiving an abnormality determination signal from the transmission means provided in the gas meter, power to a specific device A power cutoff switch that shuts off the supply of power and an electric breaker that includes a control means that shuts off the power cutoff switch according to an abnormality determination signal received by the receiving means. The power supply to is cut off .

Also, a gas flow rate measuring means for measuring a gas flow rate, a first seismic device for detecting vibration, a first abnormality determining means for determining an abnormality when the first vibration detector detects a predetermined vibration, First transmission / reception means for transmitting / receiving a first abnormality determination signal from the first abnormality determination means, first cutoff control determination means for determining cutoff of gas supply by a signal from the first transmission / reception means, and gas A gas meter equipped with a gas shut-off valve that shuts off the flow, a power shut-off switch that shuts off the supply of power to a specific device, a second seismic device that detects vibration, and the second seismic device generates a predetermined vibration. The second abnormality determining means for determining an abnormality when detected, the second transmitting / receiving means for transmitting / receiving the second abnormality determining signal from the second abnormality determining means, and the signal from the second transmitting / receiving means for supplying power Second shutoff control judgment for judging shutoff The first transmission / reception means and the second transmission / reception means are connected to each other by communication means, and the first cutoff control determination means and the second cutoff control determination means The gas cutoff and the power cutoff to the specific device are performed by determining the presence or absence of two signals, the first abnormality determination signal or the second abnormality determination signal.

Therefore, the occurrence of a secondary disaster can be suppressed by shutting off the gas shut-off valve and the electric breaker during a disaster such as an earthquake.

Furthermore, an electric current-carrying part such as a heater, a seismic device that detects vibration, an abnormality determination unit that determines an abnormality when the seismic device detects an earthquake vibration, and a transmission that transmits an abnormality determination signal from the abnormality determination unit Means and an electrical product comprising a control means for stopping energization of the electrical energization unit by the abnormality determination signal, a power cut-off switch for cutting off power supply to a specific device, and the abnormality determination signal from the transmission means. It comprises a receiving means for receiving and an electric breaker provided with a control means for shutting off the power cut-off switch by the abnormality judging signal from the receiving means, and an abnormality judging signal from a seismic device provided in an electric product Can be cut off in the event of a disaster such as an earthquake.

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

(Embodiment 1)
As shown in FIG. 1, an abnormal signal is detected when an earthquake vibration having a seismic intensity of 5 or more is detected by a gas flow rate measuring means 7 for measuring a gas flow rate, a vibration sensor 8 for detecting vibration, and a signal from the vibration sensor 8. A gas meter 12 comprising: an abnormality determination means 9 for generating a gas; a transmission means 10 for transmitting an abnormality determination signal from the abnormality determination means 9; and a gas shutoff valve 11 for blocking a gas flow by the abnormality determination signal; The receiving means 13 for receiving the abnormality determination signal from the transmission means 10 provided in the gas meter 12, the power cutoff switch 14 for cutting off the supply of power, and the power cutoff switch 14 according to the abnormality judgment signal received by the receiving means 13. It was set as the structure comprised with the electric breaker 16 provided with the control means 15 to interrupt | block.

  And since the transmission means and the reception means are performed by the power line carrier communication system using the power line 17, the power line 17 is also connected to the gas meter 12. Reference numeral 18 denotes a gas pipeline.

  Here, FIG. 2 shows a flowchart of processing performed by the abnormality determination means 9 installed in the gas meter 12. A signal from the seismoscope 8 is received and it is always determined whether or not it is an earthquake signal. If an abnormality is detected, first, the gas cutoff valve 11 is shut off, and then the abnormality determination signal is transmitted by the transmission means 10.

  Even if no abnormality is detected, a normal signal is transmitted at a predetermined time interval, for example, once a day. On the other hand, FIG. 3 shows a flowchart of processing performed by the control means 15 installed in the electric breaker 16. A signal from the transmission means 10 of the gas meter 12 is received and received information is determined.

Then, it is displayed on the display device 19 whether it is normal, an earthquake abnormality, or a communication abnormality. The communication abnormality is determined when there is no reception signal for a long period, for example, 7 days or longer. Here, when it determines with an earthquake abnormal signal, the electric power interruption switch 14 is interrupted | blocked.

  According to the above configuration, an earthquake is detected by a signal from the seismic device 8 installed in the gas meter 12, and the gas supply can be cut off and the power supply can be cut off. As a result, gas appliances can be stopped and electrical appliances that cause fires such as electric heaters can be stopped, preventing the occurrence of secondary disasters such as fires due to earthquakes without installing a new seismoscope. can do.

  And by performing gas shutoff first, gas leakage can be minimized, and even if a spark occurs when shutting down the power shutoff switch, secondary disasters such as gas explosions are prevented. be able to.

  The abnormality determination signal is transmitted by being transmitted to the power line 17 connected to the transmission unit of the gas meter. Since this signal is received by a receiving apparatus connected to the same power line 17 and information is determined, the existing power line can be used, and the installation work for information communication can be simplified. And as shown in FIG. 4, the same effect is acquired even if it uses the telephone line 20 instead of a power line.

  Further, the seismic intensity of 5 or more has been described, but more accurate interruption control can be performed by changing the respective judgment seismic intensity, such as gas interruption of seismic intensity of 5 or higher and power interruption of seismic intensity of 7 or higher.

  In addition, since transmission and reception of signals are performed at predetermined time intervals, it is possible to check when there is no signal exchange for a long time due to a failure of the gas meter, and it is possible to detect a failure of the gas meter at an early stage. .

(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIGS. Parts having the same structure and the same action as those of the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and different parts will be mainly described.

As shown in FIG. 5, the gas flow rate measuring means 7 for measuring the gas flow rate, the first seismic device 8 for detecting the vibration, and the abnormality when the first seismic device 8 detects the vibration of the earthquake Gas supply by the first abnormality determination means 9 for determination, the first transmission / reception means 21 for transmitting / receiving the first abnormality determination signal from the first abnormality determination means 9, and the signal from the first transmission / reception means 21 A gas meter 23 having a first shut-off control judging means 22 for judging shut-off of the gas, a gas shut-off valve 11 for shutting off the gas flow, a power shut-off switch 14 for shutting off the supply of power, and a second for detecting vibration. Seismic device 24, second abnormality determining means 25 for determining an abnormality when second seismic device 24 detects an earthquake vibration having a seismic intensity of 5 or more, and a second abnormality determining means 25 from the second abnormality determining means 25. Second transmission / reception means 26 for transmitting / receiving two abnormality determination signals; And an electric breaker 28 provided with a second cutoff control determination means 27 for determining the cutoff of the power supply by a signal from the two transmission / reception means 26, and the first transmission / reception means 21 and the second transmission / reception means. 26 are connected to each other by wireless communication means, and the first shut-off control determining means 22 and the second shut-off control determining means 27 are connected to the first abnormality determination signal or the second abnormality determination signal. It was set as the structure which performs gas interruption | blocking and electric power interruption | blocking by determining the presence or absence of a signal.

  Here, a flowchart of processing performed by the first cutoff control determination unit 22 installed in the gas meter 23 will be described with reference to FIG. The first abnormality determination means 9 always determines whether or not it is an earthquake signal in response to a signal from the first seismic device 8 installed in the gas meter 23.

If an abnormality is detected, a first abnormality determination signal is transmitted to the first transmission / reception means 21 and the first cutoff control determination means 22. The first interruption determination unit 22 monitors the first abnormality determination signal and the second abnormality determination signal received by the first transmission / reception unit 21, and either the first or second abnormality determination signal is monitored. If one or more abnormality determination signals are generated, the gas is shut off.

  Then, the first abnormality determination signal is transmitted to the electric breaker 28 by the first transmission / reception means 21. Here, the first cutoff control determination means 22 displays the information on the display device 29 while confirming the presence or absence of the first and second abnormality determination signals.

  On the other hand, FIG. 7 shows a flowchart of processing performed by the second shut-off control determination means 27 installed in the electric breaker 28. In response to a signal from the second seismic device 24 installed in the electric breaker 28, the second abnormality determination means 25 always determines whether the signal is an earthquake signal.

Here, if an abnormality is detected, a second abnormality determination signal is transmitted to the second transmission / reception means 26 and the second cutoff control determination means 27. The second cutoff control determination unit 27 monitors the second abnormality determination signal and the first abnormality determination signal received by the second transmission / reception unit 26, and either the first or second abnormality determination signal is monitored. If one or more abnormality determination signals are generated, the power is cut off. Then, the second abnormality determination signal is transmitted to the gas meter 23 by the second transmission / reception means 26. Here, the second shut-off determination means displays the information on the display device 30 while confirming the presence or absence of the first and second abnormality determination signals.

  According to the above configuration, an earthquake is detected by either the first abnormality determination means 9 installed in the gas meter 23 or the second abnormality determination means 25 installed in the electric breaker, and gas supply and power supply are performed. Can be blocked. As a result, the earthquake is judged by the two abnormality judging means, so that the seismic detection accuracy is improved and the operation becomes safer as compared with the case of one abnormality judging means. The occurrence of the next disaster can be prevented in advance.

Abnormality determination signal is to be transmitted and received by radio communication by the second transceiver means 26 of the first transmitting and receiving means 21 and the electric breaker 28 of a gas meter 23, it is possible to simplify the installation work for communicating information.

Further, in this embodiment, the interruption determination is made by one or more of the first abnormality determination signal and the second abnormality determination signal. However, the interruption determination is not made unless the two abnormality determination signals are simultaneously established. With this configuration, when a ball collides with a gas meter, two abnormality determination signals cannot be established at the same time, so it is possible to prevent erroneous determination due to ball collision vibration, and to improve earthquake vibration determination accuracy. Can be improved.

(Embodiment 3)
Next, a third embodiment of the present invention will be described with reference to FIGS. Parts having the same structure and the same action as those of the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and different parts will be mainly described.

  As shown in FIG. 11, a heater 36 as an electrical energization unit, a seismic device 37 that detects vibration, and a determination unit 38 that determines an abnormality when the seismic device 37 detects an earthquake vibration having a seismic intensity of 5 or more An electric stove 41 as an electric product comprising a transmission means 39 for transmitting an abnormality determination signal from the determination means 38, and a control means 40 for stopping energization of the heater 36 by the abnormality determination signal; An electric breaker 16 provided with a power cutoff switch 14 that cuts off the supply, a receiving means 13 that receives the abnormality determination signal from the transmission means 39, and a control means 15 that cuts off the power cutoff switch 14 based on the abnormality determination signal. And composed. Here, a flowchart of the process performed by the abnormality determination unit 38 of the electric heater 41 is shown in FIG. 12, and a flowchart of the process performed by the control unit 13 of the electric breaker 16 is shown in FIG.

  In such a configuration, a signal from the seismoscope 37 installed on the electric stove 41 is received, and it is always determined whether or not it is an earthquake signal. If an abnormality is detected, the electric heater is stopped by the control means 40. After that, an abnormality determination signal is transmitted by the transmission means 39. Even if no abnormality is detected, a normal signal is transmitted at a predetermined time interval, for example, once a day. And the receiving means 13 of the electric breaker 16 receives the signal from the transmission means 39 of the electric stove 41, and the control means 15 determines the received information. Then, it is displayed on the display device 19 whether it is normal, an earthquake abnormality, or a communication abnormality. The communication abnormality is determined when there is no reception signal for a long period, for example, 7 days or longer. And when it determines with an earthquake abnormal signal, an electric power interruption switch is interrupted | blocked.

  Further, the abnormality determination signal is conveyed and transmitted to the power line 17 connected to the transmission means 39 of the electric heater 41. Since this signal is received by the receiving device 13 of the electric breaker 16 connected to the same power line 17, the existing power line can be used, and the installation work for information communication can be simplified. .

( Reference Example 1 )
Next, Reference Example 1 according to the present invention will be described with reference to FIGS. Parts having the same structure and the same action as those of the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and different parts will be mainly described.

  As shown in FIG. 8, a fire alarm unit 35 including a fire determination unit 33 that detects a fire with the temperature sensor 31 and notifies the buzzer 32 of the fire, and a transmission unit 34 that transmits a fire occurrence signal, and power supply. The power cutoff switch 14 to be shut off, the receiving means 13 for receiving a fire occurrence signal from the fire alarm 35, and the control means 15 for shutting off a specific power cutoff switch 14 by the fire occurrence signal from the receiving means 13 And an electric breaker 16 equipped with Here, the flowchart of the process performed by the abnormality determination means 33 of the fire alarm 35 is shown in FIG. 9, and the flowchart of the process performed by the control means 15 of the electric breaker 16 is shown in FIG.

In such a configuration, a signal from the temperature sensor 31 installed in the fire alarm 35 is always determined to determine whether a fire has occurred, and if an abnormality is detected, a fire occurrence signal is transmitted by the transmission means. . Even when no abnormality is detected, a normal signal is transmitted at a predetermined time interval, for example, once a day. And the reception means 13 of the electric breaker 16 receives the signal from the transmission means 34 of the fire alarm 35, and a control means determines reception information. Then, the display device 19 displays whether it is normal, a fire has occurred, or a communication error has occurred. Communication abnormality is determined when there is no reception signal for a long period of time, for example, 7 days or more. And when it determines with a fire occurrence signal, the specific electric power interruption switch 14 is interrupted | blocked.

  Therefore, it is possible to cut off the power supply to a specific device when a fire occurs. For example, the operation of electric stoves and gas appliances can be stopped and the lighting appliances and emergency call appliances can be energized. is there.

  Moreover, a fire occurrence signal is conveyed and transmitted to the power line connected to the transmission means of a fire alarm. Since this signal is received by the receiving device of the electric breaker connected to the same power line and the fire occurrence signal is received, the existing power line can be used, and the installation work for information communication can be simplified.

  Moreover, if the seismoscope is combined with the fire alarm and the earthquake detection is performed with higher accuracy, it is sufficiently conceivable that the accuracy of power interruption due to the earthquake will be further improved.

(Reference Example 2)
Next, Reference Example 2 will be described with reference to FIGS. Parts having the same structure and the same action as those of the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and different parts will be mainly described.

  As shown in FIG. 14, the seismic device 42 buried in the ground, the earthquake determination means 43 for determining the occurrence of the earthquake in the seismic device 42, and the transmission for transmitting the earthquake occurrence signal from the earthquake determination means 43 Means 44, seismometer 45, receiving means 46 for receiving an earthquake occurrence signal from transmitting means 44, and control means for controlling power cut-off switch 14 for shutting off power supply by the earthquake occurrence signal from receiving means 46 15 and an electric breaker 47 equipped with 15. Here, the flowchart of the process performed by the earthquake determination means 43 of the seismometer 45 is shown in FIG. 15, and the flowchart of the process performed by the control means 15 of the electric breaker 47 is shown in FIG.

  In such a configuration, the earthquake determination means 43 always receives the signal from the seismic device 42 and determines whether it is an earthquake vibration. If an earthquake is detected, an earthquake occurrence signal is transmitted by the transmission means 44. . Even when no earthquake is detected, a signal is transmitted with a seismic intensity of 0 at a predetermined time interval, for example, once a day.

  And the receiving means 46 of the electric breaker 47 receives the signal from the transmitting means 44 of the seismometer 45, and the control means 15 determines reception information. Then, it is displayed on the display device 19 whether it is normal, an earthquake abnormality, or a communication abnormality. The communication abnormality is determined when there is no reception signal for a long period, for example, 7 days or longer. And when the seismic intensity is 5 or more from the earthquake information signal, it is determined as an abnormal signal and the power cut-off switch is cut off.

  Since the seismometer transmits detailed information about the earthquake, it is possible to determine the interruption of the electric breaker according to the seismic intensity or the occurrence situation. For example, if the frequency of occurrence is very high even in an earthquake with a seismic intensity of about 3, an electrical breaker that is connected to a device that easily consumes a large amount of power and may cause a fire or the like is shut off in advance to ensure safety. Such control can be performed.

  In addition, if a seismometer installed by the Japan Meteorological Agency is used, earthquake information can be transmitted to all the electrical breakers in the area where wireless communication is installed, and a power supply system that can respond to disaster prevention throughout the area. it can.

As described above , according to the power cut-off system in each embodiment of the present invention, it receives abnormal vibration information from the seismoscope provided in the gas meter and cuts off the power cut-off switch so that it can be used in the event of a disaster such as an earthquake. The power to a specific device can be cut off.

  And, by shutting off the gas shut-off valve and the electric breaker by the abnormal vibration information from one of the two seismic devices respectively provided in the gas meter and the electric breaker, it is possible to cut off the gas and electric power at the time of disaster such as an earthquake. . In addition, when the two seismographs detect abnormal vibrations at the same time, the accuracy of earthquake detection can be improved by shutting off the gas shut-off valve and the electric breaker.

The block diagram of the power interruption system in Embodiment 1 of this invention Flow chart of the system Flow chart of the system Block diagram when using telephone lines instead of power lines in the system The block diagram of the power interruption system in Embodiment 2 of this invention Flow chart of the system Flow chart of the system Block diagram of a power cut-off system showing Reference Example 1 Flow chart of the system Flow chart of the system The block diagram of the power interruption system which shows Embodiment 3 of this invention Flow chart of the system Flow chart of the system Block diagram of a power cut-off system showing Reference Example 2 Flow chart of the system Flow chart of the system Block diagram of a conventional power interruption system

Explanation of symbols

7 Gas flow measuring means 8, 37, 42 Seismic device or first seismic detector 9, 33, 38 Abnormality determining means or first abnormality determining means 10, 34, 39, 44 Transmitting means 11 Gas shut-off valve 12, 23 Gas meter 13, 46 Receiving means 14 Power cut-off switch 15, 40 Control means 16, 28, 47 Electric breaker 21 First transmission / reception means 22 First cut-off control determining means 24 Second seismic device 25 Second abnormality determination Means 26 Second transmission / reception means 27 Second abnormality judgment means 31 Temperature sensor 32 Buzzer 41 Electric stove as electrical product 43 Earthquake judgment means 45 Seismometer

Claims (3)

Gas flow measuring means for measuring a gas flow rate, a vibration detector for detecting vibration, an abnormality determination means for determining an abnormality when the vibration detector detects a predetermined vibration, and an abnormality determination signal from the abnormality determination means are transmitted. Transmission means, a gas meter having a gas shut-off valve that cuts off the gas flow by the abnormality determination signal, a reception means for receiving an abnormality determination signal from the transmission means provided in the gas meter, and the supply of power to a specific device is cut off power interrupt switch and said receiving means is constituted by an electric breaker including a control means for interrupting the power cutoff switch by abnormality determination signal is received, the abnormality determination, the power supply to the specified equipment after shutting off the gas supply power interrupt system for blocking. A gas flow rate measuring means for measuring a gas flow rate; a first seismic detector for detecting vibration; a first abnormality determining means for determining an abnormality when the first seismic detector detects a predetermined vibration; First transmission / reception means for transmitting / receiving a first abnormality determination signal from one abnormality determination means, first cutoff control determination means for determining cutoff of gas supply by a signal from the first transmission / reception means, and gas flow Gas meter with gas shut-off valve to shut off, power cut-off switch to cut off power supply to specific equipment, second seismic device for detecting vibration, said second seismic device detected predetermined vibration A second abnormality determining means for determining an abnormality at the time, a second transmitting / receiving means for transmitting / receiving a second abnormality determining signal from the second abnormality determining means, and a signal from the second transmitting / receiving means to cut off the power supply. A second shut-off control judging means for judging The first transmission / reception means and the second transmission / reception means are connected to each other by communication means, and the first cutoff control determination means and the second cutoff control determination means are the first cutoff control judgment means, A power cut-off system that performs gas cut-off and power cut-off to a specific device by determining the presence or absence of two signals, one abnormality determination signal or a second abnormality determination signal. An electric current-carrying part such as a heater; a seismic device that detects vibration; an abnormality determination unit that determines an abnormality when the seismic device detects an earthquake vibration; a transmission unit that transmits an abnormality determination signal from the abnormality determination unit; An electrical product including a control unit that stops energization of the electrical energization unit based on the abnormality determination signal, a power cut-off switch that cuts off power supply to a specific device, and the abnormality determination signal from the transmission unit A power cutoff system comprising: a receiving means; and an electric breaker provided with a control means for cutting off the power cutoff switch according to the abnormality determination signal from the receiving means.

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