JPH0646826B2 - Fluid cutoff control device - Google Patents

Description

TECHNICAL FIELD The present invention detects the outflow of raw gas at home and forgetting to turn off gas appliances by monitoring the state of changes in the gas flow rate in a gas supply path, and when abnormal conditions occur, The present invention relates to a fluid cutoff device that closes a gas supply passage to prevent an accident such as a gas explosion.

2. Description of the Related Art As shown in FIG. 3, a conventional device of the related art monitors a change state of a gas flow rate and compares the gas flow rate with an appropriate pattern of a gas flow rate and a usage time stored in advance (a gas appliance is used). By detecting the amount of change in the gas flow rate that changes each time and estimating the equipment used, it is compared with the normal usage time of the corresponding equipment stored in advance.) Judgment of the presence or absence of abnormality The control unit 1 is connected to a flow rate sensor 3 attached to the main body of the gas meter, which outputs a flow rate pulse each time a unit volume of gas is measured, and when the control unit 1 judges an abnormality, it shuts off the gas supply path. It had a configuration of driving the unit 2.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned configuration, when the gas appliances are forgotten to be turned off, the gas supply path is closed without giving any notification to the user, and the gas appliances in the home are simultaneously stopped. Therefore, when the user recognized the interruption, there was a problem in terms of usability such as not being able to cook and not having a bath. In addition, when returning the shut-off portion, it is necessary to manually open the solenoid valve of the gas shut-off device after tightening all the cocks of the gas appliance, and there is a problem that it takes time to restore the shut-off portion. .

The present invention solves such a conventional problem, and by notifying the user of the name of the forgetting tool to be erased before the shutoff unit shuts off, the user can easily respond when forgetting to turn off the instrument. The purpose of this is to reduce the number of interruptions and solve the problem of usability.

Means for Solving the Problems In order to solve the above problems, a gas shutoff control device of the present invention is provided in a gas supply line, and a flow rate that sends a flow rate pulse each time a gas of a predetermined unit measurement volume is measured. A sensor, and a shutoff unit for closing the flow path of the gas supply line,
The gas flow rate signal sent from the flow rate sensor is calculated by calculating the flow rate per unit time and the amount of change in the gas flow rate, and by comparing the time setting data according to the flow rate change stored in advance with the continuous use elapsed time The microcomputer is configured to judge the usage state and send a gas signal code signal to be used at the timing of the time setting data> the continuous use elapsed time from the stored correlation data between the gas flow rate change amount and the gas appliance. It comprises a control section, an external notification section having a means for decoding the code signal of the used gas appliance and an alarm means for notifying the gas appliance name to the outside, and a power source section having a battery.

Operation According to the present invention, with the above-described configuration, the microcomputer compares the time setting data according to the flow rate change amount with the current elapsed time to determine the remaining time until interruption and to use the device based on the flow rate change amount. Is estimated and is notified to the user by the external notification unit, so that the user can easily respond and the number of interruptions can be reduced.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 10 denotes a flow rate sensor that emits a flow rate pulse each time a gas is measured in a predetermined unit measurement volume, 1
1 is a self-holding solenoid valve for closing a gas flow path of a gas supply line, 12 is a control unit, 13 is a microcomputer 14
Means for sending out used gas appliance code signals from, 1
Reference numeral 4 denotes a microcomputer, which inputs a flow rate pulse signal from the flow rate sensor 10, detects a change amount of a gas flow rate that changes each time the gas instrument is used, and estimates the instrument used, and thus is stored in advance. The normal usage time (time setting data) of the applicable device is compared with the elapsed time used to determine whether there is an abnormality and the remaining time until interruption is determined. Deliver a gas appliance code signal at time.
15 is a battery for power supply, 16 is a microcomputer 14
A transistor for driving the self-holding solenoid valve 11 by the shut-off signal of No. 17 is an external notification unit, and is a decoding unit 18 for decoding the gas instrument code signal used from the communication unit 13 of the control unit 12 and an individual instrument name. It is composed of a speaker 20 and an informing means including an audio synthesizing circuit 19 for informing the outside. FIG. 2 is a flow chart showing the operation of the microcomputer 14, comparing the elapsed time in the state in which there is no flow rate change during use of the gas appliance with the time setting data stored in advance, for example, the time for judging an abnormality 5 minutes before, send out the gas appliance code signal used. The used gas appliance code can estimate the used appliance by comparing the flow rate change amount registered in advance with the corresponding data of the gas appliance and the measured gas flow rate change amount. The used gas appliance code signal is decoded by the external annunciation unit and is announced from the speaker 20 by the appliance name. After the notification, if there is no change in the flow rate, the circuit is cut off, and if the gas appliance is stopped after the notification output, the flow rate change appears, the elapsed time is cleared by the timer, and the notification output is stopped.

In the above-described configuration, the microcomputer 14 can estimate the appliance to be used based on the gas flow rate change amount, and the user can promptly take action such as closing of the corresponding gas appliance by notifying by the appliance name before shutting off. It is possible to prevent the interruption. Further, since the notification is automatically canceled by the user performing a procedure such as closing the gas appliance, the user can confirm that the appropriate procedure has been performed.

Effects of the Invention As described above, the gas cutoff control device of the present invention has the following effects.

(1) When the gas appliance is forgotten to be turned off, the user can be notified in advance by the appliance name, so that the user can take prompt action and prevent the interruption. Further, it is not necessary to perform a troublesome returning operation.

(2) When the user recognizes this by operating the gas appliance to deal with forgetting to turn it off, the notification automatically stops, so it is possible to let the user know that it was dealt with correctly. it can.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a fluid cutoff control device according to an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of a microcomputer, and FIG. 3 is a circuit diagram of a conventional fluid cutoff control device. 10 ... Flow rate sensor, 11 ... Shutoff part (self-holding solenoid valve), 12 ... Control part, 15 ... Power supply part (battery), 1
7 ... External notification unit, 18 ... Decoding means, 19, 20 ...
Notification means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Muramatsu 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Takuo Shimada, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A flow rate sensor which is provided in a gas supply line and which emits a flow rate pulse each time a gas of a predetermined unit measurement volume is measured, a shutoff section which closes a flow path of the gas supply line, and the flow rate sensor. From the flow rate signal sent from A control consisting of a microcomputer that judges and determines the gas appliance code signal to be used at a timing at which the time setting data is larger than the continuous use elapsed time from the stored correlation data between the gas flow rate change amount and the gas appliance. And an external unit having a unit for deciphering the gas appliance code signal used and an announcing unit for externally announcing the gas appliance name. Fluid cutoff control device that includes a knowledge portion.