JPH06102069A - Estimating device for use state of appliance - Google Patents

Abstract

PURPOSE:To certainly estimate the use states of respective holding appliances. CONSTITUTION:Detection means 11 act so as to monitor use states by respective holding appliances and, when there is a change in the flow rate measured by a measuring means 5, a change detection means 7 detects the change of the flow rate. An estimation means 8 certainly estimates the use states of respective holding appliances on the basis of the data of the change detection means 7 and the detection means 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is incorporated in a gas meter or the like to monitor the flow rate of gas or the like and shut off the gas when it is judged that the gas appliance is being used abnormally. The present invention relates to a device usage state estimation device built in a gas meter called a microcomputer meter.

[0002]

2. Description of the Related Art An example of a conventional device usage state estimating device used in a membrane gas meter will be described with reference to FIG. In FIG. 4, reference numeral 1 denotes a disk that makes one revolution in association with one reciprocating movement of the membrane of the membrane gas meter, 2 denotes magnets arranged on the outer periphery of the disk 1 at equal intervals, and 3 denotes a fixed arrangement near the disk 1. The magnetoresistive element 4 for detecting the change in the magnetic field is a pulse counting unit for counting the output change of the magnetoresistive element 3 and converting it into a flow rate value. A measuring means 5 is composed of the disk 1 and the pulse counting unit 4. Reference numeral 6 is a storage means for sequentially storing the flow rate value from the measurement means 5 every certain unit time.
Reference numeral 7 is a change detecting means for detecting a flow rate change from the present flow rate value measured by the measuring means 5 and the past flow rate value stored in the storage means 6. For example, if the difference | Q ₁ -Q _1-1 | between the current flow rate value Q ₁ and the flow rate value Q _1-1 at the immediately preceding time is greater than or equal to the threshold value set in advance, it is determined that the flow rate has changed. Estimating means 8 estimates the flow rate of each gas appliance currently used from the change flow rate information of the change detecting means 7,
Reference numeral 9 sets a limit continuous use safe time that can keep the state where the gas flow rate is not changed based on the information from the estimation means 8, and abnormal usage such as forgetting to turn off the gas when the set time has elapsed The shut-off time control means 10 which outputs the signal for shutting off the gas by presuming that the gas is shut off is a shut-off means for shutting off the gas by the signal of the shut-off time control means 9. The measuring means 5, the storage means 6, the change detecting means 7, the estimating means 8, the shut-off time controlling means 9, and the shut-off means 10 constitute an instrument usage state estimating device.

[0003]

However, in the above-mentioned conventional configuration, the large-scale proportional control device is arbitrarily used between the maximum usage amount and the minimum usage amount (for example, 40,000 watts to 6000 watts) and other devices (8000). There was a problem that it was not possible to reliably determine the usage state of the watts.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an instrument usage state estimating device for reliably estimating the usage state of each possessed instrument.

A second object of the present invention is to provide an instrument use state estimating device for transmitting and receiving information using ultrasonic waves in a pipe and for reliably estimating the use state of each possessed instrument even if there are a plurality of instruments of the same type. It is intended to be provided.

[0006]

In order to achieve the first object, the device usage state estimating device of the present invention has a measuring means for measuring a flow rate flowing through a common fluid supply pipe to each device. The apparatus is provided with a detection unit provided in each piping section of the device for detecting a flow rate change, and an estimation unit for estimating the usage state of each possessed device using the output information of the measurement unit and the detection unit and storing the estimation result. It is a thing.

In order to achieve the second object, the detecting means is provided in the pipe portion of the holding instrument, and the transmitting means for transmitting the flow rate change information detected and the identification number preset in each detecting means by ultrasonic waves. It is equipped with and.

[0008]

According to the present invention, with the above construction, the detecting means provided in the pipe part of the holding instrument functions to detect the information regarding the usage state of each holding instrument, and the estimating means detects the flow rate information of the measuring means and the detecting means. The usage status of the possessed equipment is estimated using the detection information of.

Further, the transmitting means transmits the use information of each holding instrument detected by the detecting means and the identification number preset in each detecting means in the pipe by using ultrasonic waves.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2. The same parts as those in the conventional example are designated by the same reference numerals. In FIG. 1, 1 is a disk that makes one revolution in association with one reciprocating motion of the membrane of a membrane gas meter, 2 is magnets arranged on the outer periphery of the disk 1 at equal intervals, and 3 is a fixed arrangement near the disk 1. A magnetoresistive element that detects changes in the magnetic field,
A pulse counting unit 4 counts the change in the output of the magnetoresistive element 3 and converts it into a flow rate value. A measuring means 5 is composed of the disk 1 and the pulse counting unit 4.
Reference numeral 6 is a storage means for storing the measured flow rate of the measuring means 5.
Reference numeral 7 is a change detecting means for detecting a flow rate change from the present flow rate value measured by the measuring means 5 and the past flow rate value stored in the storage means 6. For example, if the difference | Q ₁ -Q _1-1 | between the current flow rate value Q ₁ and the flow rate value Q _1-1 at the immediately preceding time is greater than or equal to the threshold value set in advance, it is determined that the flow rate has changed. Reference numeral 11 is a detection unit installed in the pipe portion of each gas appliance to detect a change in flow velocity from the combustion noise of the gas appliance. Reference numeral 8 denotes an estimating unit that estimates the usage state of each possessed device from the flow rate change information detected by the change detecting unit 7 and the change flow rate detected by the detecting unit 11 and stores the estimation result. Then, the connection port for each holding instrument of the detecting means 11 and the estimating means 8 installed in the piping part of each holding instrument is connected by wire. Reference numeral 9 sets a limit continuous use safe time that can keep the state where the gas flow rate is not changed based on the information from the estimation means 8, and abnormal usage such as forgetting to turn off the gas when the set time has elapsed The shut-off time control means 10 which outputs the signal for shutting off the gas by presuming that the gas is shut off is a shut-off means for shutting off the gas by the signal of the shut-off time control means 9. Then, the measuring unit 5, the storage unit 6, the change detecting unit 7, the estimating unit 8, the shutoff time control unit 9, and the shutoff unit 1
0 and the detection means 11 constitute an instrument usage state estimation device.

Next, the operation of the detecting means 11 will be described in detail. For example, when the device 1 starts to be used at 10,000 watts, the detection means 11 installed in the pipe part of the device 1 brings the output port to a high level. When the use is stopped, the output port is set to low level. When the increase / decrease in the flow rate is detected, the detection means 11 sets the output port to the middle level if the output port is at the high level, and changes the output port to the high level if the output port is at the middle level.

Next, the operation of the estimating means 8 will be described in detail. The estimating means 8 constantly monitors the change of the input port for inputting the signal from the detecting means 11 installed in the pipe part of each possessed instrument, and when the change detecting means 7 detects the change, which instrument is the change. Estimate and store the estimation result for each holding device and accumulate the usage amount for each holding device.

With the above construction, the detecting means 11 functions to monitor the usage condition for each holding instrument, and if there is a change in the flow rate measured by the measuring means 5, the change detecting means 7 detects the change in flow rate and the estimating means. 8 is change detecting means 7 and detecting means 11
With this information, it is possible to reliably estimate the usage status of each possessed device.

In the second embodiment shown in FIG. 2,
5 measures the flow rate used by the user through the gas pipe 15
The measuring means 6 is for storing the measured flow rate of the measuring means 5.
Memorizing means, 7 is the current flow rate value measured by the measuring means 5 and memory
Change the flow rate from the past flow rate value stored in the means 6.
It is a change detecting means for detecting. For example, the current flow rate value Q ₁
And the flow rate value Q at the previous time_1-1Difference |₁-Q
_1-1If | is greater than or equal to the threshold value agreed in advance, the flow rate is
Judge that it has changed. 11 is installed in the piping part of each gas appliance
The flow rate of each gas appliance is detected using the flow sensor
It is a detecting means to be issued. 12 is installed in the pipe of each gas appliance
The preset ID number is stored in the detected detecting means 11.
ID storage means 13 and detection means 11 using gas appliances
Flow rate information detected when flow rate is detected and ID memory
Piping the ID number stored in step 12 using ultrasonic waves
It is a transmission means for transmitting the inside of 15. 14 is a transmission means
Receives the gas flow rate and ID number information sent by
Is a receiving means. 8 indicates that the change detecting means 7 detects a change in the flow rate.
Use of each gas appliance received by the receiving means 14 when detected
Estimate the usage status of each holding device from the flow rate and ID number
It is an estimation means for storing the estimation result. 9 is the estimation means 8
Based on this information, there is no change in the gas flow rate.
Set the limit continuous use safe time that can be continued, and at that time
For abnormal usage such as forgetting to turn off the gas when the time has passed
It is assumed that the gas is shut off and outputs a signal to shut off the gas.
The time control means 10 receives the signal from the cutoff time control means 9
It is a shutoff means for shutting off gas. And the measuring means 5
And storage means 6, change detection means 7, estimation means 8, when shutting off
Control means 9, interruption means 10, detection means 11, ID storage
The instrument 12, the transmitting means 13, and the receiving means 14 are used.
The state estimating device 15 is configured.

With the above configuration, when both the instrument 1 and the instrument 2 are used at 10000 watts, the change detecting means 7 detects the change flow rate of 20000 watts. And
The detection means 1 in which the transmission means is installed in the pipe part of the gas appliance 1
1 transmits the flow information of 10000 watt and the preset ID = 1, and the flow information of 10000 watt detected by the detecting means 11 installed in the pipe part of the gas appliance 2 and the preset ID = 2 Is transmitted in the gas pipe using ultrasonic waves. The receiving means 14 acts so as to receive the flow rate information and the ID information of 10000 watt transmitted by the transmitting means 13, and the estimating means 8 uses the ID number and the changed flow rate information received by the receiving means 14 to perform the device 1 and the device 2. Are both 1
It can be estimated that it was used at 0000 watts.

The transmitting means 13 transmits the detection information of the detecting means 11 and the ID information inside the pipe by using ultrasonic waves, so that no particular work such as wiring is required and stable data transfer resistant to noise can be performed. Even if there are a plurality of instruments of the same type, it is possible to reliably estimate the usage state of each possessed instrument.

In the embodiment shown in FIG. 3, 16 is an ultrasonic measuring means for measuring the flow rate in the ultrasonic transmission pipe from the frequency of the ultrasonic wave received by the receiving means 14 by the ultrasonic Doppler method, and 17 is an ultrasonic wave. It is a leak detecting means for detecting a leak in the pipe from the information of the measuring means 16 and the information of the estimating means.

With the above construction, it is possible to prevent a gas explosion or the like by accurately detecting a gas leak in a common pipe of a condominium or the like or a leak in a pipe portion of each gas appliance.

[0019]

As described above, in the instrument usage state estimating device of the present invention, the detection means provided in the pipe portion of the possession instrument acts so as to detect the information regarding the usage state of each possession instrument, and the estimation means. Can estimate 100% of the usage status of the possessed equipment by using the measured flow rate information of the measurement means and the detection information of the detection means, and can be a device that supports the fee system for each equipment.

Further, the transmitting means transmits the use information of each possessed instrument detected by the detecting means and the ID number previously set in each detecting means in the pipe by using ultrasonic waves, so that a plurality of instruments of the same type exist. Even then, it is possible to reliably estimate the usage state of each possessed device.

[Brief description of drawings]

FIG. 1 is a block diagram of an appliance usage state estimating device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a device usage state estimating device according to a second embodiment of the present invention.

FIG. 3 is a block diagram of an instrument usage state estimating device according to a third embodiment of the present invention.

FIG. 4 is a block diagram of a conventional device usage state estimating device.

[Explanation of symbols]

 5 Measuring Means 6 Storage Means 7 Change Detection Means 8 Estimating Means 9 Breaking Time Control Means 10 Breaking Means 11 Detecting Means 12 ID Storage Means 13 Sending Means 14 Receiving Means

Claims (2)

[Claims] 1. A measuring means for measuring the flow rate of a fluid flowing through a common fluid supply pipe to each instrument, a detecting means for detecting a change in the flow rate provided in each pipe portion of the possessing instrument, and the measuring means and the detecting means. An apparatus usage state estimation device comprising: an estimation unit that estimates the usage state of each owned instrument using output information and stores the estimation result. 2. The detection means is provided in a pipe part of a holding instrument, and comprises a transmission means for transmitting the flow rate change information detected and the recognition information preset in each detection means by ultrasonic waves. Equipment usage estimation device.