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AssigneesSony Corporation, Sony Semiconductor Solutions Corporation
InventorsIsamu Nakao, Noriyuki Kishii, Tetsuro Kuwayama, Kensei Jo
Estimating the term…
The flow rate of light scattering fluid is measured more easily and at a higher speed. A flow rate measuring method according to the present disclosure includes: generating two or more speckle images by continually imaging light scattering fluid to be measured, while defining time shorter than spatial correlation disappearance time corresponding to time in which spatial correlation between speckle patterns generated by the light scattering fluid disappears as exposure time, at a time interval shorter than the spatial correlation disappearance time; and calculating direction and speed of flow of the light scattering fluid from time variation of the speckle patterns between the two or more speckle images, in which the speckle images are imaged by using an imaging device mounted with an area sensor and a pixel group of a part of the area sensor or by using an imaging device mounted with a line sensor.
A flow rate measuring method comprising:
A flow rate measuring device comprising:
A flow rate measuring device comprising an arithmetic processing unit configured to calculate direction and speed of flow of light scattering fluid from time variation of speckle patterns between two or more speckle images by using the two or more speckle images generated by continually imaging the light scattering fluid to be measured on which a predetermined wavelength of laser light is applied, while defining time shorter than spatial correlation disappearance time corresponding to time in which spatial correlation between the speckle patterns generated by the light scattering fluid disappears as exposure time, at a time interval shorter than the spatial correlation disappearance time,
A program causing a computer to implement an arithmetic processing function of calculating direction and speed of flow of light scattering fluid from time variation of speckle patterns between two or more speckle images by using the two or more speckle images generated by continually imaging light scattering fluid to be measured on which a predetermined wavelength of laser light is applied, while defining time shorter than spatial correlation disappearance time corresponding to time in which spatial correlation between the speckle patterns generated by the light scattering fluid disappears as exposure time, at a time interval shorter than the spatial correlation disappearance time,
Dependencies are inferred from the claim text.