Microparticles measuring apparatus
First Claim
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1. A microparticles measuring apparatus comprising:
- optical detecting means for;
(a) directing a laser beam toward microparticles passing through a flow channel,(b) detecting light emanating from the microparticles, and(c) converting the detected light into electrical signals; and
controlling means for;
(a) calculating a speed of the microparticles passing through the flow channel according to the electrical signals based on the speed being inversely proportional to pulse widths of said electrical signals,(b) determining if the calculated speed exceeds a prescribed limit or is lower than the prescribed limit; and
(c) when the calculated speed exceeds the prescribed limit or is lower than the prescribed limit, suspending the supply of solution containing the microparticles.
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Abstract
Disclosed herein is a microparticles measuring apparatus including: an optical detecting section configured to direct a laser beam toward microparticles passing through a flow channel, detect light emanating from the microparticles, and convert the detected light into electrical signals; and a controlling unit configured to calculate the speed of the microparticles passing through the flow channel according to the electrical signals and suspend the supply of solution containing the microparticles when the calculated speed exceeds a prescribed limit.
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Citations
6 Claims
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1. A microparticles measuring apparatus comprising:
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optical detecting means for; (a) directing a laser beam toward microparticles passing through a flow channel, (b) detecting light emanating from the microparticles, and (c) converting the detected light into electrical signals; and controlling means for; (a) calculating a speed of the microparticles passing through the flow channel according to the electrical signals based on the speed being inversely proportional to pulse widths of said electrical signals, (b) determining if the calculated speed exceeds a prescribed limit or is lower than the prescribed limit; and (c) when the calculated speed exceeds the prescribed limit or is lower than the prescribed limit, suspending the supply of solution containing the microparticles. - View Dependent Claims (2, 3, 4, 5)
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6. A microparticles measuring apparatus comprising:
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an optical detecting section configured to; (a) direct a laser beam toward microparticles passing through a flow channel, (b) detect light emanating from the microparticles, and (c) convert the detected light into electrical signals; and a controlling unit configured to; (a) calculate the speed of the microparticles passing through the flow channel according to the electrical signals based on the speed being inversely proportional to pulse widths of said electrical signals, (b) determine if the calculated speed exceeds a prescribed limit or is lower than the prescribed limit, and (c) when the calculated speed exceeds the prescribed limit or is lower than the prescribed limit, suspend the supply of solution containing the microparticles.
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Specification