JPH07101183B2 - Fluid usage confirmation device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for informing a user of a gas usage state from a signal of a flow rate sensor provided integrally with a gas meter provided in a gas supply path in a home. is there.

2. Description of the Related Art In a conventional device of this type, as shown in FIG. 3, a signal from a sensor 3 in a gas meter 2 attached to a gas supply path 1 is input to a timer unit 4 and then displayed on a display unit 5. It is configured to light up, and the timer unit 4 is adapted to light up the display unit 5 for a certain period of time. The user was observing whether the display unit 5 was turned on or off to determine whether the gas was used or not.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above configuration, since the flow rate of gas is not grasped, for example, when forgetting to extinguish the pilot fire of a gas appliance at home, how much the display is turned off. Then, there was a problem that it was not possible to judge whether the pilot fire was extinguished.

The present invention solves such a conventional problem, and an object of the present invention is to determine the used / unused state of a domestic gas appliance and notify the user.

Means for Solving the Problems In order to solve the above problems, the fluid use state confirmation device of the present invention is provided in a gas supply line and transmits a flow rate pulse each time a predetermined unit measurement volume of gas is measured. A flow rate sensor, a calculation processing section for determining the used / unused state of the gas appliance by calculating the supply calorific value of the gas corresponding to the minimum combustion amount of the domestic gas appliance by inputting the flow rate pulse, The operation processing unit includes a transmitter that outputs a signal indicating whether the appliance is in use / unused, and a display unit that notifies the user of the usage / unused state of the gas appliance. Timer to measure the time from one to the next flow pulse and the timer judgment time is determined from the unit volume calorific value of gas registered in advance, the unit measurement volume of the flow pulse and the minimum combustion amount of the domestic gas appliance It is provided with a configuration including a microcomputer having a calculation unit.

Effect The present invention, by the above-mentioned configuration, can judge the use / non-use of the gas appliance with the minimum combustion amount used in the home, and informs the user that all the appliances in the home are unused. be able to.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 10 is a gas supply line, 11 is a gas meter which is provided in the gas supply line and measures a gas in a predetermined unit measurement volume, and 12 is a flow rate pulse each time a predetermined unit measurement volume of gas is measured. The flow sensor, 13 measures the time interval of the flow pulse, and uses the gas appliance in the home based on the unit calorific value of the gas registered in advance, the unit measurement volume of the flow pulse, and the minimum combustion amount of the gas appliance in the home.・ A processor that consists of a microcomputer that determines the unused state, 14 is a transmitter that outputs the unused / used state signal of the gas appliance to the outside, and 15 is a transmitter that transmits the unused / used state signal of the gas appliance. , 16 are display units for informing the user of the unused / used state of the gas appliance.

In the above configuration, the time from the first flow pulse to the next flow pulse is determined as follows. Gas supply calorific value from the first flow pulse to the next flow pulse is the calorific value of supply Qi (kcal) = unit calorific value of gas (kcal / N)
m ³ ) × unit pulse volume per pulse (Vm ³ ).

From now on, the minimum combustion amount detection time of gas appliances in the home is become.

Therefore, if the pulse interval is To (Hr) or more, it is confirmed that the minimum combustion equipment in the house is stopped. Here, the unit volume heat generation amount of gas, the unit measured volume per pulse, and the minimum combustion amount of the gas appliance are registered in advance in the microcomputer. In this way, it is possible to reliably grasp the usage / non-use status of household gas appliances,
Notification can be made on the display unit.

2 shows the same contents as those in FIG. 1 on the specific circuit side of FIG. 17 is a microcomputer that inputs the signal of the flow rate sensor 12 to judge the use / unuse state of the domestic gas appliance, 19 is a transistor that is turned on / off by the microcomputer 17, 18 is a winding of the relay, and 19 is a transistor It is energized. 20 is a relay contact and a transmission line 15
The LED 21 of the display unit 16 is turned on and off via, for example, when the gas appliance is being used, the contact is closed and the LED is turned on.

Effects of the Invention As described above, according to the fluid use state confirmation system of the present invention, the following effects can be obtained.

(1) Since the standard for reporting whether gas is used or unused is determined by assuming the appliance with the smallest amount of combustion in the home, it is possible to reliably know the unused state of gas and notify the user. .

(2) The user only needs to recognize the display of used / unused, and can reliably prevent forgetting to close the gas appliance.

[Brief description of drawings]

FIG. 1 is an overall system diagram showing a fluid use state confirmation system according to an embodiment of the present invention, FIG. 2 is a detailed circuit diagram of the same, and FIG. 3 is a system diagram showing the entire conventional fluid use state confirmation system. is there. 12 …… Flow rate sensor, 13 …… Arithmetic processor, 14 …… Transmitter, 16 …… Display, 17 …… Microcomputer.

Claims (1)

[Claims] 1. A flow sensor provided in a gas supply line, which emits a flow pulse each time a predetermined unit volume of gas is measured, and a flow sensor which receives the flow pulse as an input and corresponds to the minimum combustion amount of a gas appliance at home. The calculation processing unit that calculates the supply calorific value of the gas to determine the used or unused state of the gas appliance, the transmission unit that outputs a signal of the used or unused state of the gas appliance, and the gas appliance to the user. The arithmetic processing unit is provided with a display unit for notifying a used or unused state, and the arithmetic processing unit has a timer for measuring the time from the first flow pulse of the flow pulse to the next flow pulse and a unit volume heat generation of gas registered in advance. A fluid usage condition confirmation device composed of a microcomputer having a calculation unit that determines the judgment time of a timer from the unit measurement volume of the amount and flow rate pulse and the minimum combustion amount of the domestic gas appliance.