Flow Rate Detection Method and Flow Rate Detection Apparatus Using a Heat Signal
First Claim
1. A flow rate detection method, using a heat signal, of writing a temperature-change heat signal in a medium traveling through a channel and detecting the heat signal with heat signal detecting means provided at a position away from the writing position, to measure a traveling speed of the medium,wherein first and second heat signal detecting means, which are separated by a predetermined distance L, are disposed downstream of the writing position, and the traveling speed is calculated from a time difference at which the two heat signal detecting means detecting the heat signal and from the distance L.
1 Assignment
0 Petitions
Accused Products
Abstract
A flow rate detection method using a heat signal that enables accurate flow rate measurement by eliminating sources of measurement error is provided. The flow rate detection method, using a heat signal, of writing a temperature-change heat signal in a medium traveling through a channel and detecting the heat signal with heat signal detecting means provided at a position away from the writing position, to measure a traveling speed of the medium, wherein first and second temperature sensors 20A and 20B, which are separated by a predetermined distance L, are disposed downstream of the writing position, and the traveling speed is calculated from a time difference at which the two temperature sensors 20A and 20B detecting the heat signal and from the distance L.
29 Citations
8 Claims
-
1. A flow rate detection method, using a heat signal, of writing a temperature-change heat signal in a medium traveling through a channel and detecting the heat signal with heat signal detecting means provided at a position away from the writing position, to measure a traveling speed of the medium,
wherein first and second heat signal detecting means, which are separated by a predetermined distance L, are disposed downstream of the writing position, and the traveling speed is calculated from a time difference at which the two heat signal detecting means detecting the heat signal and from the distance L.
-
5. A flow rate detection apparatus, using a heat signal, for writing a temperature-change heat signal in a medium traveling through a channel and detecting the heat signal with heat signal detecting means provided at a position away from the writing position, to measure a traveling speed of the medium, the flow rate detection apparatus comprising:
-
first and second heat signal detecting means separated by a predetermined distance L and disposed downstream of the writing position; and controlling means for calculating, by arithmetic processing, a traveling speed from a time difference at which the two heat signal detecting means detect the heat signal and from the distance L. - View Dependent Claims (6, 7, 8)
-
Specification