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    • 8. 发明申请
    • METHOD AND APPARATUS FOR MEASURING DENSITY
    • 测量密度的方法和装置
    • US20110019193A1
    • 2011-01-27
    • US12922898
    • 2009-04-15
    • Minoru DannoKenji MutaMasazumi TanouraMasatoshi KatsukiYuuko Ujihara
    • Minoru DannoKenji MutaMasazumi TanouraMasatoshi KatsukiYuuko Ujihara
    • G01N15/06G01N21/27
    • G01N21/39G01J3/4338G01N21/274G01N21/3504G01N21/534G01N21/85G01N2201/06113
    • Disclosed are method and apparatus for measuring density, that can simultaneously measure gaseous substance density and solid particulate material density and further can simultaneously measure the densities of a plurality of materials such as black smoke, white smoke, and water vapor in the solid particulate material in a simple and reliable manner. The method for measuring density comprises applying a laser beam having an absorption wavelength inherent in a gaseous material contained in an object to be measured, to the object to detect a light transmittance and a light absorption amount and detecting the density of gaseous materials in the object and the density of solid particulate materials in the object. The relationship between the density of a plurality of kinds of solid particulate materials including black smoke and white smoke and a laser beam attenuation level in each absorption wavelength is preset. Laser beams having a plurality of respective absorption wavelengths are applied to the gaseous substance to be measured. The attenuation levels of the applied laser beams having the plurality of absorption wavelengths are measured. The measured attenuation levels are compared with the attenuation levels calculated based on the present relationship to calculate the densities of the plurality of kinds of solid particulate materials.
    • 公开了用于测量密度的方法和装置,其可以同时测量气态物质密度和固体颗粒材料密度,并且还可以同时测量固体颗粒材料中多种材料如黑烟,白烟和水蒸气的密度 一种简单可靠的方式。 测量密度的方法包括将包含在待测物体中的气态材料中具有固有吸收波长的激光束施加到物体上,以检测透光率和光吸收量,并检测物体中气态物质的密度 以及物体中固体颗粒材料的密度。 预先设定包括黑烟和白烟的多种固体颗粒材料的密度与每种吸收波长中的激光束衰减水平之间的关系。 将具有多个相应吸收波长的激光束施加到待测量的气态物质上。 测量具有多个吸收波长的所施加的激光束的衰减水平。 将测量的衰减水平与基于当前关系计算的衰减水平进行比较,以计算多种固体颗粒材料的密度。