JP2005240897A - Gas shut-off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a state where an indicating needle value is not increased when a gas user is absent for days and thereby to improve security. <P>SOLUTION: A gas shut-off device comprises: a flow rate detecting part 11; a flow rate value calculating part 12; an indicating needle value holding part 13; an external communication part 14; an indicating needle display part 15; a display command part 16; and a dummy generating part 17. If a button is pressed before the user leaves home and a switching signal is generated, the dummy generating part 17 outputs a dummy indicating needle value E so that the indicating needle display part 15 displays the dummy indicating needle value E to increase the indicating needle value. Thus, the user can pretend to be at home. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a gas shut-off device that detects a gas flow rate, monitors a use amount and a use pattern, and shuts off a gas passage when an abnormality occurs.

  Conventionally, the pointer value display of this type of gas shut-off device is displayed by a mechanical drum in a display format as shown in FIG. Alternatively, a display using an LCD as shown in FIG.

  However, since this prior art does not relate to a known literature invention, there is no prior art document information to be described.

  FIG. 8 shows a conventional gas shut-off device. As shown in the figure, the flow rate detector 1 outputs a flow rate signal corresponding to the gas flow rate passing through the gas passage, and the flow rate detector 1 A flow rate value calculation unit 2 that calculates a flow rate value b when receiving the flow rate signal a, a pointer value holding unit 3 that holds the flow rate value b calculated by the flow rate value calculation unit 2 as a pointer value c, and an external device When requested, the external communication unit 4 that outputs the guide value c held by the guide value holding unit 3 to the outside, and the guide value c of the guide value holding unit 3 when the LCD is held are displayed. The pointer value display section.

  However, in the conventional configuration, because it is a mechanical drum display or to reproduce the mechanical drum display, the pointer value display would not change without the use of the gas of the gas user, The guideline value cannot be forcibly changed (especially impossible in the case of mechanical). If the guideline value does not change at any time, it will be known to others that the gas user's house is absent for a long time. It had the problem that.

  The present invention solves the above-mentioned conventional problems, and by giving an instruction to the gas shut-off device before going out, the value of the pointer value can be made variable even when the gas user goes out for a long time. An object of the present invention is to provide a gas shut-off device that improves the security of a gas user's house.

  In order to solve the above-described conventional problems, the gas shut-off device according to the present invention displays the dummy pointer value E created by the dummy generating unit 17 on the pointer value display unit 15 when the go-out button is pressed. .

  This makes it possible to change the pointer value from moment to moment even when going out, and it can be displayed as if the user is using gas at home, thereby improving security.

  Further, the gas shut-off device of the present invention learns the usage pattern of the gas user by the pointer increase learning unit 18, displays the actual usage amount of the gas by the external display instruction unit 19, and starts from the dummy display by the automatic instruction release unit 20. Automatic switching to true value display, automatic switching from the true value display to the dummy display by the unused monitoring unit 21, automatic switching from the true value display to the dummy display by the human sensitive unit 22, and the suspicious person determination unit 23 of the suspicious person It is intended to be discriminated.

  This makes it possible to vary the increase in the guideline value as if actually using a gas appliance, and to switch between the dummy display of the guideline value and the true value display automatically while maintaining security. Is possible.

  The gas shut-off device of the present invention can make it appear that the user is at home by increasing the guideline value even when the gas user is absent.

  According to a first aspect of the present invention, a flow rate detection unit that outputs a flow rate signal corresponding to a gas flow rate that passes through the gas passage, a flow rate value calculation unit that calculates a flow rate value when receiving the flow rate signal of the flow rate detection unit, A guideline value holding unit that holds the flow rate value calculated by the flow rate value calculation unit as a guideline value; and an external communication unit that outputs the pointer value held by the pointer value holding unit to the outside when requested by the outside When receiving a display switching operation from the outside, a display instruction unit that outputs a switching signal, and when receiving a switching signal of the display instruction unit, the pointer value held by the pointer value holding unit is acquired, and changes every moment. A dummy generating unit that outputs a dummy pointer value to be output, and a pointer value display unit that switches and displays the pointer value of the pointer value holding unit and the dummy pointer value of the dummy generating unit upon receiving a switching signal of the display instruction unit Absence from preparation Becomes the guideline value increases by instructing the can Yosoeru as gas user is in home be absent.

  In the second invention, in particular, the dummy generating unit of the first invention monitors the flow rate value from the flow rate value calculating unit and outputs a dummy pointer value based on learning of the gas usage pattern of the gas user. By using the learning unit, it is possible to increase the guideline value according to the usage pattern of the gas user, thereby changing the guideline value so that the gas is actually used.

  In particular, in the first or second invention, the third invention includes an external display instruction unit that outputs a true value display signal by an operation from the outside, and the pointer value display unit is a dummy with the pointer value of the pointer value holding unit. The dummy pointer value of the generating unit is switched and displayed when the display instruction unit switching signal is received, and the pointer value of the pointer value holding unit is displayed when the true value display signal of the external display instruction unit is received. The true value of the guideline value can be displayed from the outside, and a specific person such as a meter reader can check the actual gas consumption.

  According to a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, an automatic instruction release unit that outputs an automatic release signal when receiving a predetermined amount of flow rate signal of the flow rate detection unit is provided. The value display unit displays the pointer value of the pointer value holding unit and the dummy pointer value of the dummy generation unit by switching when receiving the switching signal of the display instruction unit, and the pointer value when receiving the automatic cancellation signal of the automatic instruction cancellation unit By displaying the pointer value of the holding unit, the pointer value can be automatically displayed as a true value by forgetting to instruct that the gas user has returned home and using the gas.

  In particular, the fifth aspect of the present invention includes a dummy generation unit according to the first aspect of the present invention, further comprising an unused monitoring unit that monitors the flow rate signal of the flow rate detection unit and outputs an unused signal if there is no flow rate signal for a predetermined period. When receiving a switching signal of the display instruction unit or an unused signal of the unused monitoring unit, the pointer value held by the pointer value holding unit is acquired, and a dummy pointer value that changes from moment to moment is output. The pointer value display unit switches and displays the pointer value of the pointer value holding unit and the dummy pointer value of the dummy generation unit when receiving the switching signal of the display instruction unit, and receives the unused signal of the unused monitoring unit And the dummy guideline value of the dummy generator is displayed, so that the guideline value is automatically determined by judging the period of unused gas even if the gas user forgets to give an instruction before the absence and goes out. Display with a dummy value Door can be.

  In particular, the sixth aspect of the present invention includes the human detection unit that outputs a switching signal when receiving an input signal from the human detection device arranged in the vicinity of the gas shut-off device in any one of the first to fifth inventions. Thus, the guideline value can be automatically displayed as a dummy value.

  In the seventh invention, in particular, in the first invention, switching is performed when an external display instruction unit that outputs a true value display signal by an external operation and an input signal from a human sensitive device arranged in the vicinity of the gas shut-off device are received. When a human-sensing unit for outputting a signal and a human-sensing signal and a switching signal for the display-indicating unit are received and a human-sensing signal from the human-sensing unit is received, a true-value display signal from the external display instructing unit must be received within a predetermined period. A suspicious person determination unit that outputs an alarm signal, and when an external communication unit is requested from the outside, the pointer value held by the pointer value holding unit is output to the outside and the alarm signal from the suspicious person determination unit is output. By receiving the notification to the outside when it is received, it can be recognized as a meter reader if there is an operation of the external display instruction section once it has been determined to be a suspicious person, and by reporting as a suspicious person if it is not a meter reader , Improve security It can be.

  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 functional block diagram of a gas shut-off device according to a first embodiment of the present invention.

  In FIG. 1, the flow rate detector 11 is a circular motion for one rotation for every fixed amount of a gas flow rate that passes through the gas passage (for example, a permanent magnet installed in the gas shut-off device passes through the gas passage). If the gas flow rate is detected by arranging a reed switch on the trajectory of the circular motion, or installing an ultrasonic sensor facing the gas passage, Alternatively, the flow rate signal A is output in response to the same effect obtained by creating a path through which the gas flows in the gas passage and detecting the gas flow rate from the vibration generated when the gas flows through the path.

  When the flow rate value calculation unit 12 receives the flow rate signal A from the flow rate detection unit 11, the flow rate value calculation unit 12 calculates a flow rate value B (amount of gas used).

  When the flow rate value B calculated by the flow rate calculation unit 12 is received, the pointer value holding unit 13 sequentially adds and holds the flow rate value B (the true value of the total gas usage actually used).

  When the external communication unit 14 is requested from the outside (for example, a center device that monitors the gas shut-off device using a public telephone line or the like), the external communication unit 14 sends the pointer value C held by the pointer value holding unit 13 to the outside. Output (reply to the center according to the above example).

  The display instructing unit 16 may be a display switching operation from the outside (for example, a switch connected to the gas shut-off device via a wire, a button or a remote control provided on a home security home display panel connected by wire or wirelessly, When a telephone signal is received, the switching signal D (for example, switching by the same signal structure may be used, or the same effect can be obtained even if the signal is not the same structure, such as an absent signal and a home signal. Output).

  When the dummy generation unit 17 receives the switching signal D from the display instruction unit 16, the dummy generation unit 17 acquires the pointer value C held by the pointer value holding unit 13, and the dummy pointer value E (the pointer value C is changed from time to time). For example, the dummy pointer value E may be increased by a random number periodically or irregularly in units of one minute, for example, or the dummy pointer value E may be increased based on a predetermined increase pattern. Output).

  The pointer value display unit 15 is configured to switch and display the pointer value C of the pointer value holding unit 13 and the dummy pointer value E of the dummy generation unit 17 when the switching signal D of the display instruction unit 16 is received.

  The operation and action of the gas shut-off device configured as described above will be described below.

  First, in addition to the guideline value, a display indicating that the dummy display is in progress and turning off the guideline value informs the suspicious person that the person is absent. However, if the instruction is given before the absence, the guideline value increases. Even if the gas user is absent, it will be turned up to stay at home.

  As described above, in the present embodiment, by giving a display switching instruction from the display instruction unit 16 before the absence, the dummy generation unit 17 outputs the dummy pointer value E, and the pointer value display unit 15 outputs the dummy pointer value. E can be displayed.

  When the dummy generation unit 17 monitors the flow rate value B from the flow rate value calculation unit 12 to learn the gas user's gas usage pattern and receives the switching signal D of the display instruction unit 16, the pointer value holding unit 13. (For example, it is possible to monitor one week after the gas user starts using the gas and use the average as a learning result, or the same effect can be obtained by learning for one week every month. The dummy guideline value E is output based on the usage pattern that has been obtained), so that the guideline value can be increased according to the usage pattern of the gas user. The guideline value can be changed as shown.

(Embodiment 2)
FIG. 2 is a functional block diagram according to the second embodiment of the present invention. In particular, the second embodiment is different from the first embodiment in that the pointer value display unit 15 is replaced with the pointer value C of the pointer value holding unit 13 and the dummy value. The dummy pointer value E of the generating unit 17 is switched and displayed when the switching signal D of the display instruction unit 16 is received, and the pointer value C is displayed when the true value display signal F of the external display instruction unit 19 is received. is there.

  The external display instructing unit 19 may be an external operation (for example, a button provided in an inconspicuous place of the gas shut-off device, or a non-contact signal by a magnet, a signal by radio, infrared, or the like can obtain the same effect. ) To output the true value display signal F, it is possible to display the true value of the pointer value from the outside, and a specific person such as a meter reader can check the actual gas consumption.

(Embodiment 3)
FIG. 3 is a functional block diagram according to the third embodiment of the present invention. In particular, the difference from the first embodiment is that the pointer value display unit 15 is replaced with the pointer value C of the pointer value holding unit 13 and the dummy value. The dummy pointer value E of the generating unit 17 is switched and displayed when the switching signal D of the display instruction unit 16 is received, and the pointer value C is displayed when the automatic cancellation signal G of the automatic instruction canceling unit 20 is received.

The automatic instruction release unit 20 has a predetermined flow rate of the flow rate detection unit 11 (for example, a gas flow rate of 0.2 m ³ / h or more may be used, and an equivalent effect can be obtained even with a use amount of 10 L or more). When the signal A is received, the automatic release signal G is output, so that the pointer value can be automatically displayed as a true value by forgetting that the gas user has returned home and using the gas.

(Embodiment 4)
FIG. 4 is a functional block diagram according to the fourth embodiment of the present invention. In particular, the difference from the first embodiment is that the dummy generation unit 17 is connected to the switching signal D of the display instruction unit 16 or unused monitoring. When the unused signal H of the unit 21 is received, the pointer value C held by the pointer value holding unit 13 is acquired, and the dummy pointer value E that changes every moment is output.

  When the pointer value display unit 15 receives the switching signal D of the display instruction unit 16 when the pointer value C of the pointer value holding unit 13 and the dummy pointer value E of the dummy generation unit 17 are received, the pointer value display unit 15 switches the display. When the signal H is received, the dummy pointer value E is displayed.

  The unused monitoring unit 21 monitors the flow rate signal A of the flow rate detection unit 11, and when the flow rate signal A is not generated for a predetermined period (for example, a unit of time such as a whole day, or once or a plurality of meals) The same effect can be obtained even if the flow rate signal A does not occur in the time zone). If there is no flow rate signal A, the unused signal H is output so that the gas user forgets to give an instruction before the absence. Even when the unused period of gas is determined, the guideline value can be automatically displayed as a dummy value.

(Embodiment 5)
FIG. 5 shows a functional block diagram according to the fifth embodiment of the present invention. In particular, the difference from the first embodiment is that a human sensing unit 22 is arranged near the gas shut-off device. Input signal (for example, a temperature sensor or the like detects and transmits a signal by wire or wirelessly. A similar effect can be obtained by installing a human sensitive device not only in the vicinity of the gas shut-off device but also on the way to the gas shut-off device) When a suspicious person approaches, the pointer value can be automatically displayed as a dummy value by outputting the switching signal D when the signal is received.

(Embodiment 6)
FIG. 6 is a functional block diagram according to the sixth embodiment of the present invention. In particular, the difference from the first embodiment is that the external communication unit 14 is changed to a pointer value holding unit 13 when requested from the outside. The stored pointer value C is output to the outside, and when the alarm signal K is received from the suspicious person determination unit 23, the notification is made to the outside.

  When the human sensitive unit 22 receives an input signal from the human sensitive device 22a arranged in the vicinity of the gas shut-off device (for example, the same effect can be obtained even if it is arranged at the entrance, etc.), the switching signal D and the human sensitive signal J are received. Was output.

  The suspicious person determination unit 23 receives the switching signal D of the display instruction unit 16 (that is, the gas user is absent) and receives the human signal J of the human detection unit 22 (that is, a person other than the gas user has visited). ) And the true value display signal F of the external display instructing unit 19 is not received within a predetermined period (for example, if the external display instructing unit 19 is operated within 5 minutes, there is no need to report it because it is a meter reader. If the external display instructing unit 19 is not operated even after a minute has elapsed, it is determined that the person is a suspicious person other than the meter reader). It can be recognized as a meter reader, and if it is not a meter reader, security can be improved by reporting as a suspicious person.

  As described above, since the dummy display of the gas shutoff device according to the present invention is equipped with an LCD and displays the usage amount, and if the operation state is monitored, the dummy display can be performed. It can also be applied to uses such as water meters.

Functional block diagram of the gas cutoff device in Embodiment 1 of the present invention Functional block diagram of the gas cutoff device in Embodiment 2 of the present invention Functional block diagram of the gas cutoff device in Embodiment 3 of the present invention Functional block diagram of the gas cutoff device in Embodiment 4 of the present invention Functional block diagram of the gas cutoff device in Embodiment 5 of the present invention Functional block diagram of the gas cutoff device in Embodiment 6 of the present invention (A) Mechanical pointer value display diagram showing guide value of conventional gas shut-off device (b) LCD guide value display diagram showing guide value of conventional gas shut-off device Functional block diagram of a conventional gas shut-off device

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Flow detection part 12 Flow value calculation part 13 Pointer value holding part 14 External communication part 15 Pointer value display part 16 Display instruction | indication part 17 Dummy generation part 19 External display instruction | indication part 20 Automatic instruction | indication cancellation | release part 21 Unused monitoring part 22 Human sensitive part 22a Human presence device 23 Suspicious person judgment part

Claims (7)

A flow rate detection unit that outputs a flow rate signal corresponding to a gas flow rate passing through the gas passage, a flow rate value calculation unit that calculates a flow rate value when receiving the flow rate signal of the flow rate detection unit, and the flow rate value calculation unit calculate When the flow rate value is received, the pointer value holding unit that holds the pointer value as a pointer value, the external communication unit that outputs the pointer value held by the pointer value holding unit to the outside when requested from the outside, and the display switching from the outside When receiving an operation, a display instruction unit that outputs a switching signal, and when receiving a switching signal of the display instruction unit, obtains a pointer value held by the pointer value holding unit and outputs a dummy pointer value that changes every moment. A gas shut-off device comprising: a dummy generation unit that performs switching, and a pointer value display unit that switches and displays the pointer value of the pointer value holding unit and the dummy pointer value of the dummy generation unit when receiving a switching signal of the display instruction unit . 2. The gas shut-off device according to claim 1, wherein the dummy generation unit is a pointer increase learning unit that monitors a flow rate value from a flow rate calculation unit and outputs a dummy pointer value based on learning of a gas user's gas usage pattern. . When an external display instruction unit that outputs a true value display signal by an external operation is provided, the pointer value display unit receives the pointer value of the pointer value holding unit and the dummy pointer value of the dummy generation unit and receives a switching signal of the display instruction unit The gas shut-off device according to claim 1 or 2, wherein the pointer value of the pointer value holding unit is displayed when the display is switched and a true value display signal of the external display instruction unit is received. It has an automatic instruction release unit that outputs an automatic release signal when it receives a predetermined amount of flow rate signal from the flow rate detection unit, and displays a pointer value display unit, a pointer value holding unit pointer value, and a dummy generator unit dummy pointer value 4 is displayed when the switching signal of the display instruction unit is received, and the pointer value of the pointer value holding unit is displayed when the automatic cancellation signal of the automatic instruction canceling unit is received. The gas shut-off device according to item. An unused monitoring unit that monitors the flow rate signal of the flow rate detection unit and outputs an unused signal if there is no flow rate signal for a predetermined period of time, and a dummy generation unit is used as a switching signal for the display instruction unit or the unused monitoring unit When the unused signal is received, the pointer value held by the pointer value holding unit is acquired, the dummy pointer value that changes every moment is output, and the pointer value display unit displays the pointer value of the pointer value holding unit. And the dummy pointer value of the dummy generation unit are switched to be displayed when the switching signal of the display instruction unit is received, and the dummy pointer value of the dummy generation unit is displayed when the unused signal of the unused monitoring unit is received. The gas cutoff device according to claim 1. The gas cutoff device according to any one of claims 1 to 5, further comprising a human sensitive unit that outputs a switching signal when receiving an input signal from a human sensitive device arranged in the vicinity of the gas cutoff device. An external display instruction unit that outputs a true value display signal by an external operation, a human detection unit that outputs a switching signal and a human detection signal when receiving an input signal from a human detection device arranged in the vicinity of the gas shut-off device, and a display A suspicious person determination unit that outputs a warning signal if it does not receive a true value display signal of an external display instruction unit within a predetermined period upon receiving a switching signal of the instruction unit 2. The communication unit according to claim 1, wherein when the communication unit is requested from the outside, the guideline value held by the guideline value holding unit is output to the outside, and the alarm signal from the suspicious person determination unit is received. Gas shut-off device.

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