Dennis A Quy

7784707, Aug 31, 2010

May 18, 2006

11/436381

Eric J. Witty - New Prague MN, US
Peter A. Thayer - Richfield MN, US
Brett A. Landrum - Burnsville MN, US
Dennis A. Quy - Apple Valley MN, US

Xata Corporation - Burnsville MN

G05D 23/00
B60H 1/32
B60H 1/00
G01M 1/38
G05B 13/00
G05B 15/00
F25B 49/00
G01K 13/00

236 51, 236 91 C, 236 94, 700276, 62127, 62129, 62131

In an embodiment, the invention is directed to a device including an environmental condition sensor, a light sensor; and a control module. The control module associates a light intensity above a defined threshold with an open-door status of a container. In another embodiment, a device includes an environmental condition sensor, a rewriteable memory that stores environmental condition data from the environmental condition sensor, and a wireless communication module that transmits stored environmental condition data. Embodiments of the invention may be useful to provide techniques for monitoring environmental conditions within a container, such as a refrigerated trailer.

45817340, Apr 8, 1986

Feb 14, 1984

6/580070

Gene H. Olson - Minneapolis MN
Dennis A. Quy - Apple Valley MN

Rosemount Inc. - Eden Paririe MN

H04J 302

370 85

A data communication system allocates use of a common data communication medium shared by a plurality of stations. During each transmission cycle, the communication medium carries data packets of varying priority which each station receives. The stations are allocated use of the communication medium during one or more priority intervals as a function of the priority of the packet which the station is ready to transmit. Each station is synchronized to a transmission cycle period which is divided into subperiods. Certain types of packets are relegated to transmission and reception within predetermined subperiods.

45702578, Feb 11, 1986

Feb 14, 1984

6/580007

Gene H. Olson - Minneapolis MN
Dennis A. Quy - Apple Valley MN

Rosemount Inc. - Eden Prairie MN

H04J 302

370 85

A data communication system allocates use of a common data communication medium shared by a plurality of stations. During each transmission cycle, the communication medium carries data packets of varying priority which each station receives. The stations are allocated use of the communication medium during one or more priority intervals as a function of the priority of the packet which the station is ready to transmit. Each station is synchronized to a transmission cycle period which is divided into subperiods. Certain types of packets are relegated to transmission and reception within predetermined subperiods.

46776125, Jun 30, 1987

Feb 14, 1984

6/580006

Gene H. Olson - Minneapolis MN
Dennis A. Quy - Apple Valley MN

Rosemount Inc. - Eden Prairie MN

H04J 316

370 85

A data communication system allocates use of a common data communication medium shared by a plurality of stations. During each transmission cycle, the communication medium carries data packets of varying priority which each station receives. The stations are allocated use of the communication medium during one or more priority intervals as a function of the priority of the packet which the station is ready to transmit. Each station is synchronized to a transmission cycle period which is divided into subperiods. Certain types of packets are relegated to transmission and reception within predetermined subperiods.

46270450, Dec 2, 1986

Feb 14, 1984

6/580112

Gene H. Olson - Minneapolis MN
Dennis A. Quy - Apple Valley MN

Rosemount Inc. - Eden Prairie MN

H04J 116
G06F 1100
H04B 1116

370 16

A redundant common communication system for a distributed process control or data processing system has multiple stations which are coupled to at least two redundant communication channels (such as communication busses). Each station includes a transmitter for transmitting data packets and a receiver for receiving data packets. Each data packet includes a channel selection field which identifies a selected channel to be used by all station during a succeeding transmission of a data packet. Each station makes an assessment of quality of each channel based upon the occurrence of errors when that channel is in use. The station computes a margin value based upon assessed quality factors. When the station gets an opportunity to transmit, the channel selection field of the transmitted packet identifies a channel which is selected based upon the margin value and the frequency of previous use of each of the channels. As a result, frequent switching among the channels occurs, with the percentage of use of each channel being dependent upon the assessed quality of that channel by the various stations.

20220404386, Dec 22, 2022

Jun 20, 2022

17/844289

- Burnsville MN, US
Magdi A. Essawy - Lakeville MN, US
Dennis A. Quy - Apple Valley MN, US
Ramesh Annamareddy - Banglore, IN

G01P 3/487
F01D 21/00
G01P 3/489
G01P 21/02
G01P 3/48

Apparatus and associated methods relate to monitoring health of a system for sensing rotational frequency of a rotatable member. A plurality of magnetic speed probes, each of which is configured to sense the rotational frequency of the rotatable member, are arranged in transmissive proximity with one another. A transmitter-configured one of the plurality of magnetic speed probes includes a signal coupler that couples an electrical signal generated by a radio-frequency signal generator into the inductive coil of the transmitter-configured magnetic speed probe, thereby radiatively transmitting an electromagnetic signal. A speed-probe monitor electrically coupled to each of the plurality of magnetic speed probes determines, based on the coil current sensed by each of the plurality of magnetic speed probes in response to the electromagnetic signal radiatively transmitted, health of the system.

20220220860, Jul 14, 2022

Oct 19, 2021

17/451431

- Burnsville MN, US
Ramesh Annamareddy - Banglore, IN
Magdi A. Essawy - Lakeville MN, US
Dennis A. Quy - Apple Valley MN, US

F01D 21/00
G01P 3/487
G01P 3/489

Apparatus and associated methods relate to health-monitoring of a magnetic speed probe. An inductive coil of the magnetic speed probe is used for two purposes: i) to sense a changing magnetic field caused by rotation of a rotating member; and ii) to radiatively transmit radio-frequency signals for determining the health of the magnetic speed probe. A signal generator coupled to the inductive coil of the magnetic speed probe generates the radio-frequency signals that, when conducted by the inductive coil, causes an inductive coil to act as a radio transmitter by radiatively transmitting the radio-frequency signals. The radio-frequency signals transmitted by the inductive coil are detected by a radio receiver. The radio-frequency signals received are indicative of health of the magnetic speed probe.

20220221525, Jul 14, 2022

Jan 8, 2021

17/144934

- Burnsville MN, US
Dennis A. Quy - Apple Valley MN, US

G01R 31/52
G01R 31/58
B64D 15/12

Apparatus and associated methods relate to detecting leakage current in a powered electrical system. Leakage current is detected by comparing a high-frequency response signal with a high-frequency reference signal. A high-frequency excitation signal is coupled, via an inducer, into the powered electrical system at a first location. The high-frequency response signal is sensed, via a signal sensor, at a second location of the powered electrical system. Because the electrical dynamics of the powered electrical system can change in response to system degradation that results in leakage current, changes in the high-frequency response signal can be indicative of leakage. Thus, the high-frequency response signal is compared, by a controller, with a high-frequency reference signal. The high-frequency reference signal can be a high-frequency response signal obtained at a reference time, at which the powered electrical system is operating without leakage.