Back to results
US 10,591,422 B2Granted
Apparatus and method for increasing dynamic range of a particle sensor
AssigneeHoneywell International Inc.
InventorsXiao Zhu Fan, Matthew Wiebold, Jason Garde, Lee R Wienkes
Life of this patent
Estimating the term…
Abstract
A particle detection system is provided. The particle detection system comprises at least one transmitter; at least one receiver; a first interrogation volume formed by a first intersection of a first pair of a transmitter beam of a transmitter and a receiver field of view of a receiver; and a second interrogation volume formed by a second intersection of a second pair of a transmitter beam of a transmitter and a receiver field of view of a receiver.
Claims20
A particle detection system, comprising:
- at least one transmitter;
- at least one receiver;
- a first interrogation volume formed by a first intersection of a first pair of a transmitter beam of a transmitter and a receiver field of view of a receiver;
- and
- a second interrogation volume formed by a second intersection of a second pair of a transmitter beam of a transmitter and a receiver field of view of a receiver;
- wherein the first and second interrogation volumes are different from each other either by an intensity of the transmitters or by a sensitivity of the receivers;
- wherein the first and second interrogation volumes are located in the same air stream;
- wherein the at least one receiver is configured to:
- detect a first particle of a first particle size and shape in the first interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light;
- and
- detect a second particle of a second particle size and shape in the second interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light.
8 more elements
A method, comprising:
- forming a first interrogation volume by a first intersection of a first pair of a transmitter beam of a transmitter and a receiver field of view of a receiver;
- forming a second interrogation volume by a second intersection of a second pair of a transmitter beam from a transmitter and a receiver field of view of a receiver;
- detecting a presence of a first particle of a first particle size and shape in the first interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light;
- and
- detecting a presence of a second particle of a second particle size and shape in the second interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light;
- wherein the first and second interrogation volumes are different from each other either by an intensity of the transmitters or by a sensitivity of the receivers;
- wherein the first and second interrogation volumes are located in the same air stream.
4 more elements
A particle detection system, comprising:
- a transmitter;
- a receiver;
- an interrogation volume formed by an intersection of a transmitter beam of the transmitter and a receiver field of view of the receiver;
- and
- at least one amplifier system, coupled to the receiver, configured to output at least one signal which has been amplified by different gain levels;
- wherein the at least one amplifier system is configured to:
- detect, using a first detection dynamic range of a first gain stage, a presence of a first particle of a first particle size and shape in the interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light;
- and
- detect, using a second detection dynamic range of a second gain stage, a presence of a second particle of a second particle size and shape in the interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light;
- wherein data collection related to the first and second particles occurs simultaneously in the receiver.
7 more elements
A method, comprising:
- detecting, using a first detection dynamic range of a first gain stage, a presence of a first particle of a first particle size and shape in an interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light;
- and
- detecting, using a second detection dynamic range of a second gain stage, a presence of a second particle of a second particle size and shape in the interrogation volume by detecting an intensity of scattered light and a relative polarization of the scattered light.
Dependencies are inferred from the claim text.