JP2006336880A - Gas shutoff device and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas shutoff device of high safety by allowing a gas user to set a limit value for gas usage. <P>SOLUTION: This gas shutoff device comprises a limit value setting means 8 for allowing the gas user to operate and set the limit value for gas use quantity or use time, a communication means 7 for communicating with a gas meter 6, and a shutoff determining means 9 for determining the gas use quantity or use time on the basis of a pointer value of the gas meter 6 and the safety information data, and transmitting a shutoff signal to the gas meter 6 through the communication means 7 when the gas is used over the limit value. As the shutoff signal is transmitted to the gas meter 6 to shut off the gas, when the gas is used over the limit, besides limiting the gas usage, an accident caused by forgetting to switch off the gas can be prevented, and the safety can be improved by limiting the gas usage to a small degree of only for simple cooking and boiling water, when only a child or elderly person stays home. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gas shut-off device and a program therefor for preventing an explosion accident, fire accident, poisoning accident, etc. due to gas in a gas appliance using city gas or LP gas.

  This type of conventional gas cutoff device is realized as a gas meter (see, for example, Patent Document 1).

  This is a name structure as shown in FIG. The flow rate measuring means 1 measures the flow rate passing through the gas meter. The shut-off means 2 is built in the gas meter and is composed of an electromagnetic valve or the like to shut off the gas supply. The cutoff notice warning means 3 gives notice of the cutoff of the gas. When the individual flow rate estimation means 4 detects a change in the gas flow rate measured by the flow rate measurement means 1, the individual flow rate estimation means 4 estimates that the individual flow rate corresponding to the change amount is assumed to have changed, and registers and Deregister and remember. The shut-off time control means 5 sets a limit continuous use time in which a state in which no change in the gas flow rate is allowed can be continued according to the contents of the stored individual flow rate, and is dangerous when this time has passed. It is determined that a condition has occurred, and a shut-off signal for shutting off the gas is issued to the shut-off means 2 and an alarm signal is sent to the shut-off notice warning means 3 a predetermined time before the time for issuing the close-up signal.

Next, the operation will be described. If the flow rate is measured and, for example, a change of 3% or more is recognized, the individual flow rate corresponding to each gas appliance is estimated, and registration and deregistration are performed. Set the alarm time. The cutoff time is as shown in FIG. Calorific value of different gas species (e.g., city gas 6B if 5000kcal ^/ m 3, 13A if 11000kcal / ^{m 3)} also are the gas consumption segment corresponding to each gas appliance in consideration. Therefore, when the cutoff time for the maximum individual flow rate is drawn from FIG. 6, the heat generation amount per unit flow rate set in advance by the gas type is multiplied.

  It should be noted that the interruption time is changed according to the maximum individual flow rate in this way, such as a gas water heater that requires a large flow rate is used for a short time, and a small flow rate such as a gas stove is used for a long time. This is due to the fact that the unburned gas increases the risk of explosion even in a short time as the flow rate increases.

Then, it is determined whether the set shutoff alarm time has been reached and whether the set shutoff time has been reached. When it reaches the shutoff time, it is judged that it is in a dangerous state and the shutoff operation is performed. If a change in flow rate is detected before the set cutoff alarm time or cutoff time is reached, the individual flow rate is estimated again. At this time, when the individual maximum flow rate is changed, the cutoff time and cutoff alarm time corresponding to the new maximum individual flow rate are reset. In this way, if there is a change in the flow rate even if the maximum individual flow rate does not change, the measurement of the duration is repeated if another gas appliance is newly used or stopped as long as the flow rate changes. This is because the gas is judged to be used normally.
Japanese Patent No. 3169594

  However, the conventional configuration has the following problems. Normally, this type of gas shut-off device is realized as a gas meter, and is configured so that the gas user cannot change the settings such as the limit value. I had a margin in setting. Therefore, for example, even when leaving only children and elderly people, there is a problem that safety monitoring can be performed only with the same limit value as an adult who has sufficient safety awareness for gas use.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a highly safe gas shut-off device and its program by a gas user setting a gas use limit value.

  In order to solve the above-described conventional problems, a gas shutoff device and a program therefor according to the present invention include a limit value setting means for a gas user to operate and set a limit value of a gas usage amount or a use time, and a communication means with a gas meter. When the gas usage amount or usage time is determined from the meter reading value or safety information data held by the gas meter, and the gas is used exceeding the limit value, a cutoff signal is sent to the gas meter via the communication means. And a shut-off determining means for sending out.

  In this way, gas usage is restricted separately from the safety monitoring by the gas meter, and if the gas is used beyond the limit, a shut-off signal is sent to the gas meter to shut off the gas, so that only children and the elderly can When leaving the house, it is possible to prevent accidents caused by forgetting to turn off the gas by restricting the use of gas to such an extent that simple cooking and boiling water are performed, thereby improving safety.

  The gas shutoff device and its program according to the present invention can prevent accidents caused by forgetting to turn off the gas by restricting the use of gas to such an extent that only cooking or hot water is boiled when leaving only children and the elderly. It can be prevented in advance, so you can go out safely and improve safety.

  According to a first aspect of the present invention, a limit value setting means for a gas user to operate and set a limit value of a gas usage amount or usage time, a communication means with a gas meter, and a gas usage amount or usage time are determined from a meter reading value of the gas meter. And, when gas exceeding the limit value is used, by using a gas shut-off device comprising a shut-off judging means for sending a shut-off signal to the gas meter via the communication means, what is safety monitoring by the gas meter? Separately, if the gas usage is restricted and the gas is used exceeding the limit, it is easy to send out a cutoff signal to the gas meter to shut off the gas, leaving only children and the elderly. By restricting the use of gas to such an extent that cooking or boiling hot water, accidents due to forgetting to turn off the gas can be prevented and safety can be improved.

  According to a second aspect of the present invention, a gas is continuously used from a limit value setting means for a gas user to operate and set a limit value of a gas usage amount or a use time, a communication means with a gas meter, and a meter reading value of the gas meter. A gas shut-off device comprising: a continuous use shut-off judging means for judging a use amount or a use time and sending a shut-off signal to the gas meter via the communication means when the gas is used exceeding the limit value. From the limit value of the gas usage or usage time set by the gas user with the limit value setting means and the amount of change in the meter reading value obtained by the communication means with the gas meter, Calculate the amount of gas used or the time used, and if the limit value is exceeded, send a shutoff signal to the gas meter to shut off the gas, so that you can forget to turn off the gas. That accident was prevented in advance, safety is improved.

  According to a third aspect of the present invention, the gas use time is determined from the limit value setting means for the gas user to operate and set the limit value of the gas use time, the communication means with the gas meter, and the security information data held by the gas meter. When the gas is used in excess of the limit value, it is restricted by the gas user by providing a gas cutoff device having a safety information cutoff judgment means for sending a cutoff signal to the gas meter via the communication means. From the limit value of the gas usage time set by the value setting means and the safety information data such as the continuous usage time and the monitoring flow rate classification possessed by the gas meter obtained by means of communication with the gas meter, When the usage time is exceeded and the limit value is exceeded, a shutoff signal is sent to the gas meter to shut off the gas, thereby preventing accidents due to forgetting to turn off the gas. And prevention, the safety is improved.

  In particular, according to the fourth invention, in any one of the first to third inventions, the user is notified in advance that the gas is shut off before sending the shut-off signal to the gas meter to shut off the gas. By providing the notification means, it is determined that the amount of gas used or the usage time has exceeded the limit value, and before shutting off the gas by sending a shutoff signal to the gas meter, the user is notified of the gas shutoff by display or sound. At the same time, by warning that the user is in an abnormal use state and urging the user to avoid a dangerous state, an accident due to forgetting to turn off the gas can be prevented and safety can be improved.

  In particular, the fifth invention is a program for causing a computer to execute at least a part of the functions of the gas shutoff device according to any one of the first to fourth inventions. It is possible to easily realize at least a part of the gas shutoff device of the present invention by cooperating hardware resources such as a device, a computer, and a server. In addition, by recording on a recording medium or distributing the program using a communication line, the program can be easily distributed / updated and installed.

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

(Embodiment 1)
FIG. 1 shows a gas cutoff device according to Embodiment 1 of the present invention.

  As shown in the figure, in the gas shut-off device in the present embodiment, a gas user operates and sets a gas meter 6 having a security function installed in a general household, and a limit value of gas usage or usage time. The limit value setting means 8, the communication means 7 with the gas meter 6, and the amount of gas used or the use time are determined from the meter reading value of the gas meter 6. If the gas is used exceeding the limit value, the communication means 7 is set. And a shut-off determination means 9 for sending a shut-off signal to the gas meter 6.

  The gas meter 6 has security information data such as a meter reading value indicating a cumulative amount of gas used, a monitoring flow rate segment for monitoring a continuous use interruption time for each gas flow rate segment as shown in FIG. In addition to being able to refer to the data from the outside, it has a function of shutting off the gas by closing the shut-off valve when an abnormality is determined or by an external signal.

  The communication means 7 communicates with the gas meter 6 and refers to the safety information data such as the meter reading value, the monitoring flow rate classification and the continuous use time, and shuts off the gas by the shut-off signal.

  The limit value setting means 8 stores a limit value of gas usage or usage time set by the gas user.

  The shut-off determination means 9 periodically refers to the meter reading value of the gas meter 6 by the communication means 7, calculates the gas use amount by calculating from the change amount of the meter reading value, and calculates the gas use time from the integration of the time when the meter reading value is changed. Is compared with the limit value set and stored by the limit value setting means 8, and when the limit value is exceeded, a cutoff signal is sent to the communication means 7.

  Next, the operation of the gas cutoff device in the above configuration will be described.

  When the limit value setting means 8 operates and sets the limit value of the gas usage amount or usage time by the gas user, the shut-off determination means 9 periodically starts referring to the meter reading value of the gas meter 6 via the communication means 7. . If the gas user sets a limit value for the gas usage, the difference between the meter reading at the time when the meter reading reference starts and the meter reading after the passage of time is the gas usage at that time. The determination means 9 calculates this difference, compares the value with the limit value of the gas usage set and stored by the limit value setting means 8, and if the limit value is exceeded, the shutoff determination means 9 causes the communication means 7 to A gas shut off signal is sent to

  In addition, when the gas user sets a limit value for the gas usage time, it is determined whether or not there is a change from the previous meter reading value when the meter reading value is periodically referenced, and the meter reading value has changed. The shut-off determination means 9 calculates the gas usage time by multiplying the number of times by the time interval of referring to the meter reading value, or by integrating the time from when the meter reading value changes until the meter reading value no longer changes. The gas use time limit value set and stored by the limit value setting means 8 is compared. When the limit value is exceeded, the shutoff determining means 9 sends a shutoff signal to the communication means 7 to shut off the gas.

  In this way, the gas user himself / herself can limit the amount of gas used or the usage time, and in the unlikely event that the gas is used exceeding the limit, the gas meter 6 is sent to the gas meter 6 to shut off the gas. Therefore, when going out leaving only children and the elderly, it is possible to prevent accidents due to forgetting to turn off the gas by limiting the use of gas to the extent that simple cooking and boiling water are used. Yes, you can go out safely and improve safety.

(Embodiment 2)
FIG. 2 shows a gas cutoff device according to Embodiment 2 of the present invention. Constituent elements having the same functions as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The gas shut-off device in the present embodiment includes a continuous use shut-off determining means 10 instead of the shut-off determining means 9 in the first embodiment. The continuous use interruption determining means 10 determines the amount of gas used or the time of use continuously from the meter reading value of the gas meter 6. If the gas is used exceeding the limit value, the communication means 7 is set. Through the gas meter 6. In other words, the communication unit 7 periodically refers to the meter reading value of the gas meter 6 to obtain the amount of gas used continuously from the amount of change in the meter reading value, and the time during which there is a change in the meter reading value continues. The gas usage time continuously used is calculated and compared with the limit value set and stored in the limit value setting means 8, and when the limit value is exceeded, a shut-off signal is sent to the communication means 7. is there.

  Next, the operation of the gas cutoff device in the above configuration will be described.

  When the limit value setting means 8 operates and sets the limit value of the gas usage amount or usage time, the continuous use cutoff judgment means 10 periodically refers to the meter reading value of the gas meter 6 via the communication means 7. Start. If the gas user sets a limit value for gas usage, it is determined whether or not there is a change from the previous meter reading value when the meter reading value is referred to periodically. Stores the difference from the previous meter reading value, and the continuous use interruption determining means 10 accumulates this difference until there is no change from the previous meter reading value. Since the integrated value of this difference is the gas usage that is used continuously, this value is compared with the limit value of the gas usage set and stored in the limit value setting means 8, and the limit value is exceeded. In this case, the continuous use cutoff judgment means 10 sends a cutoff signal to the communication means 7 to shut off the gas.

  When it is determined that there has been no change from the previous meter reading value, it is determined that the gas use has stopped, and the continuous use cutoff determining means 10 clears the integrated value of the difference and determines the amount of gas used continuously. Repeat the integration. In addition, when a limit value for gas usage time is set by the gas user, it is determined whether or not there is a change from the previous meter reading value when the meter reading value is periodically referenced, and a change has occurred in the meter reading value. The continuous use shut-off determination means 10 calculates the gas use time that is continuously used from the time until the meter reading value is not changed, and this value and the gas use time set and stored by the limit value setting means 8 are calculated. When the limit value is exceeded, the continuous use cutoff judgment means 10 sends a cutoff signal to the communication means 7 to shut off the gas.

  In this way, the gas user himself can limit the amount of gas used or the time of use, and in the unlikely event that gas is used exceeding the limit, send a shutoff signal to the gas meter to shut off the gas Therefore, when going out leaving only children and the elderly, it is possible to prevent accidents caused by forgetting to turn off the gas by limiting the use of gas to the extent that simple cooking and boiling water are used. , You can go out safely and improve safety.

(Embodiment 3)
FIG. 3 shows a gas cutoff device according to Embodiment 3 of the present invention. Components having the same functions as those of the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.

  The gas shut-off device in the present embodiment is provided with a safety information shut-off determining means 11 instead of the shut-off determining means 9 and the continuous use shut-off determining means 10 in the first and second embodiments. This safety information blocking judgment means 11 judges the gas usage time from the safety information data held by the gas meter 6, and when the gas is used exceeding the limit value, it is sent to the gas meter 6 via the communication means 7. Send a shut-off signal. That is, the gas meter 6 refers to the safety information data such as the monitoring flow rate category and the continuous usage time for monitoring the continuous usage interruption time for each gas flow rate category as shown in FIG. The continuous use time of the monitoring flow rate classification according to 6 is obtained and compared with the limit value set and stored by the limit value setting means 8. When the limit value is exceeded, a cut-off signal is sent to the communication means 7.

  Next, the operation of the gas cutoff device in the above configuration will be described.

  When the limit value setting unit 8 is operated to set the limit value of the gas use time by the gas user, the security information blocking determination unit 11 periodically starts to reference the safety information data of the gas meter 6 via the communication unit 7. . Since the safety information data includes data of the monitoring flow rate classification and the continuous use time by the gas meter 6, the safety information cutoff judgment unit 11 limits the value of the continuous use time and the gas use time set and stored by the limit value setting unit 8. When the limit value is exceeded, the security information cut-off determination means 11 sends a cut-off signal to the communication means 7 to cut off the gas. Further, the next reference time of the safety information data of the gas meter 6 can be varied by comparing the value of the continuous use time at the time of reference with the limit value of the gas use time set and stored by the limit value setting means 8. It is. For example, if the limit value is set at 30 minutes and the data value of the continuous use time of the gas meter 6 is 10 minutes, the next reference timing is performed 20 minutes after the limit value is reached. Unnecessary communication by means 7 can be omitted.

  Furthermore, since the gas meter 6 holds the continuous use time data for each monitoring flow rate section, the limit value of the gas use time set by the limit value setting means 8 may be set with a different value for each monitoring flow rate section. it can. In this way, the time limit can be changed according to the gas consumption of the gas combustion appliance, and the gas combustion appliance with a higher consumption can be limited in a shorter time, and a safer gas cutoff device can be provided.

  In this way, the gas user himself can limit the gas usage time, and in the unlikely event that the gas is used exceeding the limit, the gas meter can be shut off by sending a cutoff signal to the gas meter. If you leave your child or the elderly alone, you can prevent accidents caused by forgetting to turn off the gas by limiting the use of gas to the level of simple cooking and boiling water. You can go out and improve safety.

(Embodiment 4)
FIG. 4 shows a gas cutoff device according to Embodiment 4 of the present invention. Constituent elements having the same functions as those of the first to third embodiments are denoted by the same reference numerals and description thereof is omitted.

  The gas shut-off device according to the present embodiment is a gas shut-off device according to any one of the first to third embodiments, wherein the user shuts off the gas before sending the shut-off signal to the gas meter 6 to shut off the gas. Is provided with an informing means 12 for informing in advance. That is, before judging that the limit value set and stored in the limit value setting means 8 has been exceeded and shutting off the gas via the communication means 7, it is indicated to the gas user by display, notification sound, voice or a combination thereof. We will inform you in advance that the gas will be shut off.

  Next, the operation of the gas cutoff device in the above configuration will be described.

  When the limit value setting means 8 is operated to set a limit value for the amount of gas used or the use time by the gas user, as shown in the first to third embodiments, the meter reading value or security of the gas meter 6 via the communication means 7 Reference of information data is started, and when the gas usage amount or usage time exceeds a limit value set by the gas user, a cutoff signal is sent to the communication means 7 to shut off the gas. Before the shutoff signal is sent and the gas is shut off, that is, when a predetermined amount or a predetermined time before reaching the limit value is reached, the notifying means 12 is in a dangerous use state for the gas user. Awareness can be alerted and danger avoidance by gas users themselves can be encouraged.

  In this way, the gas user himself can limit the amount of gas used or the time of use, and in the unlikely event that gas is used exceeding the limit, send a shutoff signal to the gas meter to shut off the gas If you can go out leaving only children and the elderly without suddenly stopping the gas supply by warning the user before the limit is exceeded In addition, by limiting the use of gas to the level of simple cooking and boiling water, accidents due to forgetting to turn off the gas can be prevented in advance, so that the user can go out safely and improve safety.

  The means described in the first to fourth embodiments are hardware resources such as a CPU (or microcomputer), a RAM, a ROM, a storage / recording device, an electric / information device including an I / O, a computer, a server, and the like. You may implement in the form of the program which cooperates. In the form of a program, new functions can be distributed / updated and installed easily by recording them on a recording medium such as magnetic media or optical media or distributing them using a communication line such as the Internet.

  As described above, the gas shut-off device and the program thereof according to the present invention limit the gas use by simply cooking or boiling the hot water when going out leaving only children and the elderly. Accidents caused by forgetting to turn off can be prevented, and the user can go out with peace of mind and improve safety, so it can be applied to applications such as automatic meter reading systems and home security systems.

The block diagram of the gas cutoff device in Embodiment 1 of this invention Block diagram of a gas cutoff device in Embodiment 2 of the present invention Block diagram of a gas cutoff device in Embodiment 3 of the present invention Block diagram of a gas shut-off device in Embodiment 4 of the present invention Block diagram of a conventional gas shut-off device The figure which shows the list of time limit of use time block

Explanation of symbols

6 Gas Meter 7 Communication Unit 8 Limit Value Setting Unit 9 Blocking Determination Unit 10 Duration Cut-off Determination Unit 11 Security Information Blocking Determination Unit 12 Notification Unit

Claims (5)

The limit value setting means for the gas user to operate and set the limit value of the gas usage or usage time, the communication means with the gas meter, and the meter reading value of the gas meter determine the gas usage or usage time, and the limit value is determined. A gas shut-off device comprising shut-off determination means for sending a shut-off signal to the gas meter via the communication means when the gas is used in excess. The limit value setting means for the gas user to operate and set the limit value of the gas usage or usage time, the communication means with the gas meter, and the gas usage or usage time continuously used from the meter reading value of the gas meter A gas shut-off device comprising: a continuous use shut-off judging means that sends a shut-off signal to the gas meter via the communication means when the gas is used exceeding the limit value. The limit value setting means for the gas user to operate and set the limit value for the gas use time, the communication means with the gas meter, and the safety information data held by the gas meter, the gas use time is determined, and the limit value is exceeded. When the gas is used, a gas shut-off device comprising safety information shut-off determination means for sending a shut-off signal to the gas meter via the communication means. The gas shut-off device according to any one of claims 1 to 3, further comprising an informing means for informing the user that the gas is shut off before sending the shut-off signal to the gas meter to shut off the gas. . The program for making a computer perform at least one part of the function in the gas cutoff device of any one of Claims 1-4.

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