APPARATUS AND METHOD FOR MEASURING DUST
First Claim
1. An apparatus for measuring dust, comprising:
- a flow channel unit for defining a flow channel allowing a fluid containing dust to move through;
a light emitter for emitting light into the flow channel;
a light detector for detecting light scattered from the dust in the flow channel and converting the detected light scattered from the dust in the flow channel into an electrical detection signal, the light detector comprising a plurality of detectors having different light detection ranges; and
a controller for controlling the flow channel unit, the light emitter and the light detector,wherein the controller is configured to;
receive detection signals from the plurality of detectors,compensate for an offset for the received detection signals, andmeasure a dust concentration based on the compensated detection signals.
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Accused Products
Abstract
Disclosed herein is a dust measuring apparatus and method for measuring a dust concentration in a flow channel. The apparatus includes a flow channel unit for defining a flow channel allowing a fluid containing dust to move therethrough, a light emitter for emitting light into the flow channel, a light detector for detecting light scattered from the dust in the flow channel and converting it to an electrical detection signal, the light detector including a plurality of detectors having different light detection ranges, and a controller for controlling the flow channel unit, the light emitter and the light detector, wherein the controller is configured to receive detection signals from the detectors, compensate for an offset for the received detection signals, and measure a dust concentration based on the compensated detection signals.
5 Citations
20 Claims
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1. An apparatus for measuring dust, comprising:
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a flow channel unit for defining a flow channel allowing a fluid containing dust to move through; a light emitter for emitting light into the flow channel; a light detector for detecting light scattered from the dust in the flow channel and converting the detected light scattered from the dust in the flow channel into an electrical detection signal, the light detector comprising a plurality of detectors having different light detection ranges; and a controller for controlling the flow channel unit, the light emitter and the light detector, wherein the controller is configured to; receive detection signals from the plurality of detectors, compensate for an offset for the received detection signals, and measure a dust concentration based on the compensated detection signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for measuring dust in an apparatus for measuring the dust comprising a plurality of detectors having different light detection ranges, the method comprising:
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receiving detection signals from the detectors; compensating for an offset for the received detection signals; and measuring a dust concentration based on the compensated detection signals. - View Dependent Claims (17, 18, 19, 20)
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Specification