JPH10124101A - Gas shut-off device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a gas shut-off device which limits the amount of information to be notified to a centralized monitoring device at the time of an earthquake and prevents confusion due to information confusion. SOLUTION: When a vibration is detected by a seismic sensor 10, an earthquake determination unit 3 determines from a vibration pattern or the like that the earthquake has a predetermined seismic intensity or higher, and outputs an earthquake determination signal. The shut-off valve 9 is operated by the shut-off valve drive unit 4 in response to the input of the earthquake determination signal, and the communication control unit 6 extracts only the pre-defined seismic notification information from the seismic notification information storage unit 7 and concentrates it from the external communication unit 11 Send to monitoring device. When the return time measuring unit 5 measures a predetermined return time, the communication control unit 6 extracts the notification information and switches to the normal notification information from the normal notification information storage unit 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas shut-off device as a safety measure in gas use, and more particularly to a gas shut-off device having a function of notifying an abnormal occurrence state during an earthquake by a communication means.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a configuration of a conventional gas shut-off device. This gas shut-off device 20
It is configured to have a gas shut-off function based on earthquake detection and a communication function with a centralized monitoring device installed at a predetermined location.

In FIG. 2, a gas isolator 20 detects an earthquake vibration and outputs a vibration signal, and a vibration pattern of the vibration signal determines that the earthquake has a predetermined strength or more. An earthquake determination unit 22 that outputs an earthquake determination signal when an earthquake
A shut-off valve driving unit 23 for driving the gas passage 4 to shut off the gas passage;
A notification information storage unit 25 that stores a plurality of pieces of notification information to be notified to a centralized monitoring device installed at a predetermined location, and an external communication unit 28 that extracts notification information from the notification information storage unit 25 by inputting the earthquake determination signal and outputs the notification information. Communication control unit 2 to input to
7 and an external communication unit 28 for transmitting the notification information to the centralized monitoring device.

In the above configuration, an abnormal state occurring in the gas shutoff device 20 is configured to be reported to the centralized monitoring device by the external communication unit 28. Therefore, when an earthquake confirmation signal is output, the communication control unit 27 is notified. Extracts the notification information stored in the notification information storage unit 25 and
, The notification information is transmitted from the external communication unit 28 to the centralized monitoring device.

[0005]

However, in the above-mentioned conventional configuration, in the case of an earthquake in which damages occur over a wide area at once, the centralized monitoring device is flooded with information from each gas shut-off device. In addition to the inability to respond to the device, there has been a problem that important notification information cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the conventional configuration, and has as its object to provide a gas shut-off device configured to selectively notify only necessary information at the time of an earthquake.

[0007]

According to the present invention, there is provided an external communication means for notifying a plurality of notification information to a centralized monitoring device connected through a communication line, and detecting an earthquake having a predetermined intensity or more from a vibration pattern detected by the vibration. A gas shut-off device that shuts off a gas passage based on an earthquake confirmation signal output when the earthquake confirmation signal is input and the earthquake notification information to be reported when the earthquake confirmation signal is input. Notification information storage means for separately storing time notification information, and a return time measurement for counting a predetermined time from the input of the earthquake confirmation signal to a preset normal return and outputting a normal return signal after a predetermined time has elapsed. Means, read out only the earthquake notification information from the notification information storage means by the earthquake restriction setting by inputting the earthquake determination signal, and read the normal recovery signal. Force by and characterized by being provided with a communication control means for reading out the normal-warning information by releasing the seismic limit set for output to the external communication means.

According to the above configuration, when an earthquake of a predetermined seismic intensity or higher is detected, an earthquake confirmation signal is output. Therefore, only the information to be reported at the time of an earthquake by the earthquake limitation setting based on the earthquake confirmation signal is the broadcast information storage means. And notified to the centralized monitoring device by the external communication means. Since the earthquake notification information is limited to limited specific notification information, the amount of incoming information at the centralized monitoring device, which is flooded with information notification during an earthquake, can be suppressed to only necessary information. Since the predetermined time is measured by the return time measuring means after the earthquake determination signal is output, and a normal return signal is output when the measurement time ends, and the earthquake restriction setting of the communication control means is released. In addition, the information transmission returns to the normal notification information, and a sufficient amount of information can be notified to the centralized monitoring device.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention.
The following embodiments are examples embodying the present invention and do not limit the technical scope of the present invention.

FIG. 1 shows a gas shut-off device 1 according to this embodiment.
FIG. 3 is a block diagram showing the configuration of FIG. The gas shut-off device 1 is configured to be able to perform information notification to the centralized monitoring device installed at a predetermined place in an earthquake and in a normal time separately.

In FIG. 1, a seismic sensor 10 detects a vibration such as an earthquake and outputs a seismic signal A.

The seismic signal A is input to the earthquake judging unit 3, and when it is judged from the vibration pattern and the vibration intensity that the earthquake is equal to or larger than the predetermined seismic intensity, the earthquake judging unit 3 outputs the earthquake fixed signal B. I do. The earthquake determination signal B is input to the shut-off valve driving unit 4, the return time measuring unit 5, and the communication control unit 6. The shutoff valve drive unit 4 drives the gas shutoff valve 9 to shut off the gas passage. The return time measuring unit 5 starts measuring a predetermined time (for example, 25 hours) until a preset return.

The communication control unit 6, to which the earthquake confirmation signal B has been input, requests the earthquake notification information storage unit 7 that sets the earthquake restriction by inputting the earthquake confirmation signal B and stores only the earthquake notification information. To extract the earthquake notification information C and output it to the external communication unit 11. The external communication unit 11 transmits the input earthquake notification information C to the centralized monitoring device.

By this operation, in the centralized monitoring device where information from a large number of gas shutoff devices 1 is concentrated, necessary minimum information (for example, gas leak information) limited to the time of the earthquake is collected. It does not cause confusion.

[0015] The return time measuring unit 5 outputs an earthquake confirmation signal B
The counting is started from the time of input of, and when the measurement of the predetermined time is completed, the normal return signal E is output to the communication control unit 6. The input of the normal return signal E causes the communication control unit 6
Cancels the above-mentioned earthquake-time restriction setting, so that the retrieval of the notification information is switched to the normal notification information storage unit 8, and the normal notification information D stored in the normal notification information storage unit 8 is centralized through the external communication unit 11. Send to monitoring device.

In the above configuration, the notification information storage means includes:
It is divided into an earthquake notification information storage unit 7 and a normal notification information storage unit 8, but in response to a request from the communication control unit 6 by a method of mapping or addressing each item of one notification information storage unit. It is also possible to configure such that the corresponding seismic information C or the normal information D is output separately.

[0017]

As described above, according to the present invention, when an earthquake of a predetermined seismic intensity or more is detected, a seismic confirmation signal is output, and the gas passage is shut off by the shutoff valve based on this signal output. Only information to be notified to the centralized monitoring device at the time of a preset earthquake is taken out from the notification information storage means and is notified to the centralized monitoring device by the external communication means. Since the earthquake notification information is limited to the limited specific notification information, the amount of incoming information at the centralized monitoring device, which is flooded with information notification, can be suppressed to only necessary information.

A preset time is measured by the return time measuring means after the output of the earthquake determination signal, and when the measurement time has expired, the information transmission is returned to the normal alert information, and a sufficient amount of information is output. It can notify the centralized monitoring device. Therefore, only a limited number of necessary items are notified in the event of an earthquake, and confusion caused by a large number of pieces of information being complicated in a centralized monitoring device in which the information is concentrated can be avoided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a gas cutoff device according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a gas shutoff device according to a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 gas shutoff device 2 information notification device 3 earthquake determination unit 4 shutoff valve drive unit 5 return time measurement unit (return time measurement unit) 6 communication control unit (communication control unit) 7 earthquake notification information storage unit (report information storage unit) 8 Normal notification information storage unit (Notification information storage unit) 9 Gas shutoff valve 10 Seismic sensor 11 External communication unit (external communication means)

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification code FI G01V 1/00 G01V 1/00 D (72) Inventor Takeshi Nawata 1006 Ojidoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. (72 ) Inventor Kazumitsu Natsui 9-10 Misonodai, Fujisawa-shi, Kanagawa Prefecture (72) Inventor Isao Kaneko 4-13-21 B-807, Meguro-ku, Tokyo B-807 (72) Inventor Kazuya Fujisawa, Meguro-ku, Tokyo 4-13-21 Meguro A-408

Claims (1)

[Claims] An external communication means for reporting a plurality of pieces of notification information to a centralized monitoring device connected through a communication line, and an earthquake determination output when an earthquake of a predetermined intensity or more is detected from a vibration pattern detected by the vibration. In a gas shutoff device that shuts off a gas passage based on a signal, the plurality of pieces of notification information are divided into earthquake-time notification information to be notified when the earthquake determination signal is input and normal-time notification information to be notified in normal times. Notification information storage means for storing;
Recovery time measuring means for counting a predetermined time from the input of the earthquake determination signal to a preset normal recovery and outputting a normal recovery signal after a lapse of the predetermined time; and Communication control means for reading only the earthquake-time notification information from the notification information storage means, canceling the earthquake-time restriction setting by inputting the normal return signal, reading the normal-time notification information, and outputting the information to the external communication means. A gas shut-off device, comprising: