Ralph Paul Waters

US Patent:

6347552, Feb 19, 2002

Filed:

Sep 5, 2000

Appl. No.:

09/655321

Inventors:

Paul E. Purpura - Yorktown NY
Ralph Waters - Washingtonville NY
Olivier Landier - Paris, FR
Beri Cohen - Hartsdale NY

Assignee:

Bayer Corporation - Tarrytown NY

International Classification:

G01N 2900

US Classification:

73633

Abstract:

A profile of a rack, that may have zero, one, or a plurality of containers may be obtained using an ultrasonic sensor. The sensor emits a plurality of ultrasonic bursts and the rack is transported under the sensor at a slew speed that allows the sensor to detect at least first and second echoes from each of the bursts. Data points, corresponding to each of the first and second echoes, are generated and the data points are captured in a memory device. The data points, generally reflecting the levels of the rack and any containers, are processed to dynamically and non-invasively (i. e. , without physically contacting the liquid with a probe) determine information about the container types, whether any container is capped, and, if one or more containers are uncapped, the liquid level in the uncapped containers. This profiling may be used in a variety of devices and is particularly useful in a sample handler in an automated analytical instrument, where the ultrasonic sensor may be positioned above a rack transport mechanism.

US Patent:

62270532, May 8, 2001

Filed:

Jul 14, 1998

Appl. No.:

9/115393

Inventors:

Paul E. Purpura - Yorktown NY
Ralph Waters - Washingtonville NY
Olivier Landier - Paris, FR
Beri Cohen - Hartsdale NY

Assignee:

Bayer Corporation - Tarrytown NY

International Classification:

G01N 2900
G01F 2300

US Classification:

73627

Abstract:

A profile of a rack, that may have zero, one, or a plurality of containers may be obtained using an ultrasonic sensor. The sensor emits a plurality of ultrasonic bursts and the rack is transported under the sensor at a slew speed that allows the sensor to detect at least first and second echoes from each of the bursts. Data points, corresponding to each of the first and second echoes, are generated and the data points are captured in a memory device. The data points, generally reflecting the levels of the rack and any containers, are processed to dynamically and non-invasively (i. e. , without physically contacting the liquid with a probe) determine information about the container types, whether any container is capped, and, if one or more containers are uncapped, the liquid level in the uncapped containers. This profiling may be used in a variety of devices and is particularly useful in a sample handler in an automated analytical instrument, where the ultrasonic sensor may be positioned above a rack transport mechanism.