JPH0425828B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention prevents gas accidents by shutting off gas passages when an abnormality occurs, and transmits information on the cause of the shutoff to a gas utility information center using a telephone line. This relates to a gas cutoff device that can transmit data.

BACKGROUND OF THE INVENTION In recent years, safety devices for preventing gas accidents have become important, and a conventional gas cutoff device will be described as an example with reference to FIG. 3.

In Fig. 3, 1 is a flow rate sensor input section that inputs a flow rate signal from a gas meter, and 2 is a gas flow rate that inputs a flow rate pulse signal from flow sensor input section 1 to determine an abnormality in the gas flow rate flowing through the gas passage. A determination unit, 3 is an external sensor input unit that inputs a detection signal from an external sensor, and 4 receives signals from the gas flow rate determination unit 2 and the external sensor input unit 3, determines whether or not the gas flow is interrupted, and outputs a shutoff signal and a shutoff signal. A gas cutoff determination section outputs a display signal; 5 is a cutoff control section that drives and controls a cutoff valve, etc. based on the cutoff signal from the gas cutoff determination section 4; 6 is a cutoff control section that uses an LED or the like in response to a cutoff display signal from the gas cutoff plate bottom 4; This is a display generating section that displays cutoff information.

In the above configuration, if the gas shutoff determination unit 4 determines that there is an abnormality, the gas passage is shut off by a shutoff valve or the like through the shutoff control unit 5, and the display unit 6 provides shutoff information to the consumer or the contacted gas supply company. Let me know. Shutdown information is communicated through blinking patterns of LEDs, etc.

Problems to be Solved by the Invention However, with the above configuration, when the gas cutoff device is activated, the gas supply company does not know the reason for the cutoff until it receives notification from the consumer that the gas flow has been cut off. I can't give quick advice about the house. Further, even if consumers check the shutoff information of the gas shutoff device, it is difficult to understand the reason for the shutoff, and there is a problem in that appropriate measures cannot be taken without contacting the gas supply company.

The present invention solves the above problems, and when a gas cutoff device is activated at a consumer, the gas supply company can immediately grasp the reason for the cutoff, and can provide appropriate advice to the consumer. The purpose is to provide a gas cutoff device that can ensure safe operation.

Means for Solving the Problems In order to solve the above problems, the gas cutoff device of the present invention includes a flow rate sensor input section that inputs a flow rate signal from a gas meter, and a flow rate pulse signal inputted from the flow rate sensor input section. a gas flow rate determination unit that measures and monitors the gas flow rate flowing through the gas passage and determines whether or not there is an abnormality; an external sensor input unit that inputs a detection signal from an external sensor; a gas shutoff determination and shutoff event information generation section that receives a signal from the flow rate determination section and generates a gas passage shutoff determination and shutoff event information; and a gas shutoff determination and shutoff event information generation section that generates a shutoff signal based on the signal from the gas shutoff determination and shutoff reason information generation section. It is composed of a cutoff control section that outputs the output, and a transmission interface section that sends the gas cutoff determination and cutoff reason information from the cutoff cause information generation section to the telephone line.

Effects The present invention has the above-described configuration, so that when the gas passage is cut off due to an abnormality in the gas flow rate flowing through the gas passage or the operation of an external sensor, information on the reason for the interruption is sent to the telephone line, and the connected gas utility Since the information is transmitted to a gas information center or the like, the gas supply company that receives the shut-off reason information can immediately confirm the shut-off reason and promptly respond to the customer.

Embodiment A gas cutoff device according to an embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is a flow rate sensor input section that inputs a flow rate signal from a flow rate sensor provided in a gas passage of a gas meter, and 2 is a flow rate sensor input section that inputs a flow rate pulse signal from flow rate sensor input section 1, and the flow rate of gas flowing through the gas passage. 3 is connected to various external sensors and inputs detection signals from the external sensors; 7 is gas flow rate determination section 2; and a gas shut-off determination and shut-off event information generating section that inputs signals from the external sensor input section 3 and determines the shut-off of the gas passage and the shut-off reason; A shutoff control section 8 inputs a signal and controls the drive of a shutoff valve, etc., and configures the gas shutoff judgment and shutoff event information from the shutoff event information generation section 7 into a telegram for transmitting over a telephone line. This is a transmission interface unit that sends out data.

The operation of the gas cutoff device configured as above will be explained. The flow rate sensor provided in the gas meter is turned on and off every time the unit measurement volume of the gas meter is measured, and this signal is replaced by a flow rate pulse signal at the flow rate sensor input section 1. This flow rate pulse signal is input to the gas flow rate determining section 2, where it is integrated and stored as a flow rate per unit time. Then, it is compared with a normal gas consumption pattern registered in advance in the gas flow rate determination section 2, and sent to the gas cutoff determination and cutoff reason information generation section 7. The gas cutoff determination and cutoff reason information generation unit 7
It determines whether there is an abnormality or not and determines whether to shut off the gas, and if gas shutoff is necessary, outputs a shutoff signal to the shutoff control unit 5, generates shutoff reason information, and sends the shutoff reason information to the transmission interface unit 8. . Then, the interruption reason information is configured as a predetermined message, and is sent from the transmission interface section 8 to the telephone line.

As for the shutoff reason information, compared to the meter number,
Total flow rate over shutoff, which shuts off when an unreasonably large gas flow rate occurs, individual maximum flow rate over shutoff, which shuts off when an unnaturally large increase in flow rate occurs compared to the meter number, and gas flow rate. Safe continuous use time exceeds shutoff, which shuts off if gas continues to flow for an abnormally long time without any fluctuation, and a return leakage shutoff, which shuts off if gas flows for 2 minutes when the shutoff is restored. There is a pulsed shutoff during shutoff that outputs a shutoff output when gas flows in the middle mode, and an external sensor shutoff that determines shutoff based on a signal from the external sensor input section 3.

As described above, according to this embodiment, when the above-mentioned cutoff event occurs, the gas passage is cut off, and the transmission interface section 8 sends the cutoff cause information to the telephone line, so that the gas utility company can Shutdown event information can be transmitted to the information center, and the gas situation information center can immediately confirm the shutoff reason for an abnormal shutoff that has occurred at a consumer, and can take prompt action.

Further, as in another embodiment of the present invention shown in FIG. 2, gas integrated flow rate value calculation/storage means 9 may be provided.

In Fig. 2, the difference from the above embodiment is as follows.
The gas integrated flow rate calculation/storage means 9 is added to the configuration shown in the figure, and the flow rate signal from the gas meter is input to the gas flow rate determination unit 2 via the flow rate sensor input unit 1, and the gas integrated flow rate The value is input to the value calculation/storage means 9, and stored after integration processing. This integrated and stored gas flow rate integrated value is sent to the gas utility information center via the transmission interface section 8 and telephone line when necessary.

As described above, by providing the gas integrated flow rate value calculation/storage means 9 in the gas cutoff device having the transmission interface part 8 that sends the gas cutoff cause information to the telephone line, the integrated gas flow rate value can be sent to the gas utility information center. It can be used as an automatic meter reading for a gas meter, but in this case, the flow rate sensor input section 1 and the transmission interface section 8 can be shared, resulting in a more economical system configuration.

Effects of the Invention As described above, the gas cutoff device of the present invention includes a flow rate sensor input section that inputs a flow rate signal from a gas meter, and a flow rate pulse signal from the flow rate sensor input section that measures the gas flow rate flowing through a gas passage. , a gas flow rate determination unit that monitors and determines whether there is an abnormality, an external sensor input unit that inputs detection signals from an external sensor, and a gas flow rate determination unit that inputs signals from the external sensor input unit and the gas flow rate determination unit. A gas shutoff determination and shutoff event information generation section that generates a passage shutoff determination and shutoff reason information, a shutoff control section that outputs a shutoff signal based on a signal from the gas shutoff determination section, and a shutoff event that outputs a shutoff event information from the shutoff reason information generation section. By providing a transmission interface unit that sends information to the telephone line, if an external sensor is activated or an abnormality occurs in the gas flow rate, the gas passage can be shut off and information on the reason for the shutoff can be sent to the gas utility information center, etc. is possible,
Even without contact from the consumer, the gas utility information center or the like can immediately take appropriate measures against the consumer based on the reason for the shutoff.

Therefore, the gas utility information center or the like can constantly monitor the status of the gas cutoff device of the consumer and ensure safety.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a gas cutoff device according to an embodiment of the present invention, Fig. 2 is a block diagram of a gas cutoff device according to another embodiment of the present invention, and Fig. 3 is a block diagram of a conventional gas cutoff device. . 1...Flow rate sensor input section, 2...Gas flow rate determination section, 3...External sensor input section, 5...Shutoff control section, 7...Gas cutoff determination and cutoff reason information generation section, 8...Transmission interface Department.

Claims (1)

[Claims] 1 A flow rate sensor input section that inputs a flow rate signal from a gas meter, and a gas sensor that inputs a flow rate pulse signal from the flow rate sensor input section to measure and monitor the gas flow rate flowing through the gas passage and determine whether or not there is an abnormality. a flow rate determination unit, an external sensor input unit that inputs a detection signal from an external sensor, and inputs signals from the external sensor input unit and the gas flow rate determination unit to generate a gas passage blockage determination and blockage reason information. a gas cutoff determination and cutoff reason information generation section; a cutoff control section that outputs a cutoff signal based on a signal from the gas cutoff determination and cutoff reason information generation section; and cutoff reason information from the gas cutoff determination and cutoff reason information generation section. A gas cutoff device that consists of a transmission interface section that sends the signal to the telephone line.