Title:
物理量変化履歴記録方法及びそのプログラム、並びに流量計測装置及び流体供給システム
Document Type and Number:
Japanese Patent JP5177903
Kind Code:
B2
Abstract:
When an appliance identification art is provided, the computing speed and the identification accuracy are improved while the required memory amount, etc., is decreased. In a gas meter 100, an ultrasonic flowmeter 104 measures the flow rate of gas flowing into a flow path 102 at a given time interval, and a computation section 108 computes a difference value of the predetermined time period between the measured flow rates. A difference value conversion section 112 converts the computed difference value into a code with reference to a flow rate class table by which classes of difference values corresponding to a size of the difference value and codes representing the classes are associated with each other. Further, a flow rate change history generation section 114 generates a flow rate change history approximately representing flow rate change of gas based on a set of the codes of the predetermined time period.
Inventors:
Ryushi Iwamoto
Application Number:
JP2009516184A
Publication Date:
April 10, 2013
Filing Date:
May 26, 2008
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G01F3/22; G01D9/00
Domestic Patent References:
| JP2006313114A | 2006-11-16 | |||
| JP2007024807A | 2007-02-01 | |||
| JP2000283815A | 2000-10-13 | |||
| JP2006038630A | 2006-02-09 | |||
| JP2005321197A | 2005-11-17 | |||
| JPH0979870A | 1997-03-28 | |||
| JP2006313114A | 2006-11-16 | |||
| JP2007024807A | 2007-02-01 | |||
| JP2000283815A | 2000-10-13 |
Foreign References:
| WO2006121004A1 | 2006-11-16 |
Attorney, Agent or Firm:
Shohei Oguri
Toshimitsu Ichikawa
Kimihide Hashimoto
Toshimitsu Ichikawa
Kimihide Hashimoto