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flow measuring device

A flow measurement device and flow measurement technology, applied in the direction of measurement devices, liquid/fluid solid measurement, measurement capacity, etc., can solve problems such as slow rise, wrong judgment, and inability to determine the fluid flow value

Active Publication Date: 2015-07-29
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the structure of the above-mentioned conventional gas meter device, there is a problem that the fluctuation pattern in which the flow rate value of the fluid increases slowly when the fuel cell starts to operate cannot be determined, resulting in erroneous judgments.

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0066] refer to image 3 The gas meter (flow measurement device) 1 according to Embodiment 1 will be described. image 3 It is a block diagram showing an example of the configuration of main parts of the gas meter 1 in Embodiment 1 of the present invention. exist image 3 In particular, the configuration of main parts related to the appliance identification process implemented in the gas meter 1 is shown.

[0067] Such as image 3 As shown, the gas meter 1 is equipped with a flow path 2, a flow measurement unit 12, a measured flow storage device (flow storage device) 13, a fuel cell judgment unit (fuel cell judgment unit) 14, an appliance identification unit (equipment identification unit) 15, Appliance feature extraction unit (variation pattern information generation unit) 16, appliance unique feature code sequence information storage unit (device unique information storage device) 17, difference conversion unit (fluctuation pattern information generation unit) 18, flow ra...

Embodiment approach 2

[0157] In addition, the gas flow rate supplied to the gas appliance 4 is automatically adjusted for each gas appliance 4 . However, it may be performed by manually adjusting the supply amount of the gas supplied to the gas appliance 4 . When manually adjusting the supply amount of gas in this way, it may not be possible to distinguish whether the gas appliance 4 using the gas is a fuel cell or not only by the conditions A and B. Therefore, the following condition C is further added to the gas meter 1 according to the second embodiment in order to eliminate the influence of the manual adjustment and more accurately determine whether the gas appliance 4 using gas is a fuel cell. Then, the fuel cell judgment unit 14 judges whether or not the gas appliance 4 using the gas is a fuel cell based on whether or not all the conditions A to C are satisfied.

[0158] In addition, the gas meter 1 according to Embodiment 2 is similar to the gas meter according to Embodiment 1 except that t...

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Abstract

A gas meter (1) of the present invention includes a flow measuring section (12) for measuring a flow value of a gas flowing through a fluid passage 2 connected to a gas instrument (4a to 4c) at each specified time interval; a measurement flow memory (13) for storing the measured flow value; and a fuel cell determiner section (14) for determining that the instrument (4a to 4c) using a gas is a fuel cell, when a condition A and a condition B are satisfied, in which the condition A is such that a maximum value of determination target flow values is equal to or less than a second predetermined value, the determination target flow values being a predetermined number of flow values measured before and after a reference flow value which is equal to or greater than a first predetermined value and is closest to the first predetermined value, the determination target flow values being included in stored flow values, and the condition B is such that a difference value derived by subtracting from each of all of the determination target flow values, an average value found from the each determination target flow value and a predetermined number of measurement flow values measured before the each determination target flow value, is equal to or less than a third predetermined value.

Description

technical field [0001] The present invention relates to a technique for correctly identifying an appliance using a fluid based on a change in the flow rate of the fluid. Background technique [0002] Conventionally, a gas meter device capable of specifying an appliance using gas in a fluid piping system having a gas meter device has been developed. As such a gas meter device, there is a gas meter device 100 disclosed in Patent Document 1, for example. refer to Figure 21 The configuration of this gas meter device 100 will be described. Figure 21 It is a block diagram showing a schematic configuration of a conventional gas meter device 100 . [0003] Such as Figure 21 As shown, the gas meter device 100 includes a flow path 106 communicating with a domestic gas supply pipe (gas line 119 ). Furthermore, the gas meter device 100 includes a storage device 105 , a gas shutoff valve 102 , a flow measurement unit 103 , a calculation unit 104 , a comparison and determination unit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/00G01F3/22F23K5/00F23N5/18H01M8/04
CPCF23K5/005F23N5/18G01F1/00G01F15/002G01F15/075H01M8/04089Y02E60/50
Inventor 长友谦治横畑光男
Owner PANASONIC CORP
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