MICHAEL JOHN HAMEL
Pilots at Rdg Rd, Essex Junction, VT
License number
Vermont A4079962
Issued Date
Feb 2016
Expiration Date
Feb 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
5 Ridge Rd, Essex Junction, VT 05452
Professional information
Wireless Structural Health Monitoring System With Synchronized Timekeeper
US Patent:
2011028, Nov 24, 2011
Filed:
Aug 2, 2011
Appl. No.:
13/196031
Inventors:
Steven W. Arms - Williston VT, US
Chris Pruyn Townsend - Shelburne VT, US
David Lawrence Churchill - Burlington VT, US
Michael John Hamel - Essex Junction VT, US
Chris Pruyn Townsend - Shelburne VT, US
David Lawrence Churchill - Burlington VT, US
Michael John Hamel - Essex Junction VT, US
International Classification:
G08B 1/08
US Classification:
3405391
Abstract:
A method of obtaining data about a structure includes providing a plurality of sensor modules on the structure. Each of the sensor modules includes a sensor, a processor, a sensor module precision timekeeper, and a sensor module transceiver. One of the plurality of sensor modules includes an energy harvesting device. The processor and the sensor module transceiver of this one of the plurality of sensor modules are powered solely with electricity derived from the energy harvesting device. The method further includes providing a base station. The method further includes periodically wirelessly receiving a broadcast resynchronization timing packet with each of the sensor module transceivers, wherein the broadcast resynchronization timing packet received by each of the sensor module transceivers includes a common resynchronization time value. The method further includes periodically resynchronizing each of the sensor module precision timekeepers based on a signal derived from the resynchronization time value. The method further includes digital sampling of the sensor module sensor in each of the sensor modules to provide digital sensor data, and providing a time stamp to the digital sensor data wherein time in the time stamp is provided by the sensor module precision timekeeper. The method further includes wirelessly transmitting data from each of the plurality of sensor modules to the base station, wherein the data is derived from the time stamped digital sensor data. The method further includes receiving and aggregating the data from each of the plurality of sensor modules in the base station.
Wide-Band Vibration Energy Harvester With Restoring Spring
US Patent:
8134282, Mar 13, 2012
Filed:
Sep 1, 2010
Appl. No.:
12/873801
Inventors:
David L. Churchill - Burlington VT, US
Steven W. Arms - Williston VT, US
Michael J. Hamel - Essex Junction VT, US
James Marc Leas - South Burlington VT, US
Steven W. Arms - Williston VT, US
Michael J. Hamel - Essex Junction VT, US
James Marc Leas - South Burlington VT, US
Assignee:
Microstrain, Inc. - Williston VT
International Classification:
H01L 41/113
US Classification:
310339, 310329
Abstract:
A device for harvesting an external source of energy includes an electricity generating device, a flexure, and a restoring spring. The electricity generating device generates electricity based on movement of the flexure. The flexure has a first stable position. When disregarding presence of the restoring spring the flexure also has a second stable position different from the first stable position. The restoring spring is positioned so when the flexure snaps from the first stable position toward the second stable position the restoring spring provides a restoring spring force to restore the flexure toward the first stable position. Substantially greater force is needed to snap the flexure from the first stable position toward the second stable position to overcome the restoring spring force than is required to snap the flexure from the second stable position toward the first stable position.
Wide-Band Vibration Energy Harvester With Stop
US Patent:
8154177, Apr 10, 2012
Filed:
Sep 1, 2010
Appl. No.:
12/873700
Inventors:
David L. Churchill - Burlington VT, US
Steven W. Arms - Williston VT, US
Michael J. Hamel - Essex Junction VT, US
James Marc Leas - South Burlington VT, US
Steven W. Arms - Williston VT, US
Michael J. Hamel - Essex Junction VT, US
James Marc Leas - South Burlington VT, US
Assignee:
Microstrain, Inc. - Williston VT
International Classification:
H01L 41/113
US Classification:
310339, 310329
Abstract:
A device for harvesting an external source of energy includes an electricity generating device, a flexure, and a first stop. Displacement of the flexure is limited by the first stop. The flexure has a vibration amplitude, wherein the vibration amplitude is amplitude the flexure would have if unconstrained by the first stop. The first stop allows the flexure to oscillate with a vibration amplitude that is higher than displacement of the flexure as limited by the first stop. The electricity generating device generates electrical energy while the first stop allows the flexure to oscillate with the higher vibration amplitude.
Sensor Powered Event Logger
US Patent:
7747415, Jun 29, 2010
Filed:
Dec 22, 2006
Appl. No.:
11/644038
Inventors:
David L. Churchill - Burlington VT, US
Frederic P. Martin - Richmond VT, US
Michael J. Hamel - Essex Junction VT, US
Christopher P. Townsend - Shelburne VT, US
Steven W. Arms - Williston VT, US
Frederic P. Martin - Richmond VT, US
Michael J. Hamel - Essex Junction VT, US
Christopher P. Townsend - Shelburne VT, US
Steven W. Arms - Williston VT, US
Assignee:
Microstrain, Inc. - Williston VT
International Classification:
G01L 1/00, G01L 3/00, G01L 5/00, G06F 17/40
US Classification:
702187, 702 42, 702189
Abstract:
A system includes a structure and a circuit. The circuit is mounted to the structure. The circuit includes a sensor, a non-volatile memory, and a voltage sensitive switch. The memory and the voltage sensitive switch are connected for recording an event sensed by said sensor. The recording only uses power derived from the sensor. One embodiment of the circuit includes a processor connected for receiving a signal derived from the sensor. In this embodiment the non-volatile memory is connected to the processor for receiving and storing data derived from the signal. In one embodiment a first energy storage device is connected to receive energy from the sensor. The voltage sensitive switch is connected for releasing energy from the first energy storage device when energy stored in the first energy storage device exceeds a threshold. The processor and the non-volatile memory are connected for receiving power from the released energy.
Remotely Powered And Remotely Interrogated Wireless Digital Sensor Telemetry System
US Patent:
7256695, Aug 14, 2007
Filed:
Sep 23, 2003
Appl. No.:
10/668827
Inventors:
Michael John Hamel - Essex Junction VT, US
Steven W. Arms - Williston VT, US
Christopher P. Townsend - Shelburne VT, US
Steven W. Arms - Williston VT, US
Christopher P. Townsend - Shelburne VT, US
Assignee:
Microstrain, Inc. - Williston VT
International Classification:
G08B 13/14
US Classification:
3405721, 3405724, 3405728, 34087016, 600300, 600492, 600384
Abstract:
An electronic system includes a reader and a remotely powered and remotely interrogated sensor transponder. The sensor transponder includes a coil or an antenna, a switched reactance circuit, a processor, and a sensor. The sensor transponder receives power radiated from the reader to the coil or antenna. The sensor uses the power for sensing. The sensor transponder is capable of processing sensor data in the processor and transmitting the sensor data to the reader using the switched reactance circuit. In one embodiment, the receiver coil or antenna is part of a resonant tank circuit which includes an impedance matching circuit. The impedance matching circuit is connected to the receiver coil or antenna to provide greater current to the sensor or other power-using device than would be available to the sensor or other power-using device if the sensor or other power-using device were connected between the first and second end. The impedance matching circuit can be two or more taps to the coil or antenna.
Transducer For Measuring Dynamic Translation By Differential Variable Reluctance
US Patent:
H002265, Dec 6, 2011
Filed:
May 16, 2007
Appl. No.:
11/805264
Inventors:
Timothy M. Fouse - Colonial Beach VA, US
Michael M. Canaday - King George VA, US
Steven W. Mundell - Richmond VT, US
Michael John Hamel - Essex Junction VT, US
Michael M. Canaday - King George VA, US
Steven W. Mundell - Richmond VT, US
Michael John Hamel - Essex Junction VT, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G01L 5/14
US Classification:
73167
Abstract:
A differential variable reluctance transducer (DVRT) is provided to measure a translation parameter, such as acceleration and/or deceleration of a test projectile. The DVRT, contained in a canister of the projectile, includes a cylindrical housing and an electronics module. The housing defines a cavity containing insulation and a bobbin around which a wire coil is wrapped. The housing has an attachment end and a distal end that faces the acceleration indicator. The bobbin is disposed substantially collinear to the housing. The wire coil is helically disposed around the bobbin. The insulation fills the remainder of the cavity. The electronics module receives electric current from the wire coil and connects to a data recorder.
Shaft Mounted Energy Harvesting For Wireless Sensor Operation And Data Transmission
US Patent:
8011255, Sep 6, 2011
Filed:
Aug 14, 2007
Appl. No.:
11/891957
Inventors:
Steven W. Arms - Williston VT, US
Christopher P Townsend - Shelburne VT, US
David L. Churchill - Burlington VT, US
Michael J. Hamel - Essex Jct VT, US
Christopher P Townsend - Shelburne VT, US
David L. Churchill - Burlington VT, US
Michael J. Hamel - Essex Jct VT, US
Assignee:
Microstrain, Inc. - Williston VT
International Classification:
G01L 3/00
US Classification:
73862325
Abstract:
One embodiment of the present patent application is a method of monitoring a rotating part. The method includes providing a shaft, a sensor, a processor, an energy storage device, and a transmitter. The method further includes mounting the sensor directly on the shaft and mounting said processor, said energy storage device, and said transmitter to rotate with said shaft. The method further includes rotating the shaft and waking the processor for a period of time and drawing energy to the processor from the energy storage device to provide the processor in an active mode during the period of time. The method also includes sampling the sensor during the period of time. It also includes returning the processor to sleep mode. The method also includes transmitting data derived from the sensor.
Energy Harvesting, Wireless Structural Health Monitoring System
US Patent:
7719416, May 18, 2010
Filed:
Sep 11, 2006
Appl. No.:
11/518777
Inventors:
Steven W. Arms - Williston VT, US
Chris Pruyn Townsend - Shelburne VT, US
David Lawrence Churchill - Burlington VT, US
Michael John Hamel - Essex Junction VT, US
Chris Pruyn Townsend - Shelburne VT, US
David Lawrence Churchill - Burlington VT, US
Michael John Hamel - Essex Junction VT, US
Assignee:
MicroStrain, Inc. - Williston VT
International Classification:
G08B 1/08, G08B 23/00, G08B 13/00
US Classification:
3405391, 340506, 340517, 340521, 340566, 3406931, 340429, 3405393, 34053913, 3406934, 340683, 307151, 310339, 702 33, 702 42, 702187
Abstract:
A method of maintaining a structure includes providing a structure having a component subject to failure. A sensor, a memory and an energy harvesting device are mounted on the structure. The sensor is used and data derived from the sensor logged in the memory, wherein the memory is powered solely with energy derived from the energy harvesting device. The component is replaced if information in the memory shows that the component was subject to damaging usage.
Rfid Tag Packaging System
US Patent:
7696621, Apr 13, 2010
Filed:
Jul 5, 2007
Appl. No.:
11/825404
Inventors:
Steven W. Arms - Williston VT, US
Michael J. Hamel - Essex Junction VT, US
Michael J. Hamel - Essex Junction VT, US
Assignee:
MicroStrain, Inc. - Williston VT
International Classification:
G01L 7/00
US Classification:
257728, 257 7, 428 68, 428 76
Abstract:
An electronic packaging system includes an electronic device. The electronic packaging system also includes a flexible material located adjacent a plurality of sides of the electronic device. The electronic device is located in a cavity in the flexible material. The flexible material has a first height and a first width. The electronic device has a second height. The first height is greater than the second height and the first width is greater than the first height so the flexible material protects the electronic device from loading.
Miniaturized Wireless Inertial Sensing System
US Patent:
7672781, Mar 2, 2010
Filed:
Jun 5, 2006
Appl. No.:
11/446637
Inventors:
David L. Churchill - Burlington VT, US
Michael John Hamel - Essex Junction VT, US
Chris Prvyn Townsend - Shelburne VT, US
Steven W. Arms - Williston VT, US
Michael John Hamel - Essex Junction VT, US
Chris Prvyn Townsend - Shelburne VT, US
Steven W. Arms - Williston VT, US
Assignee:
Microstrain, Inc. - Williston VT
International Classification:
G01C 21/00
US Classification:
701220, 73488
Abstract:
A system includes a moveable body and a first device for mounting on the movable body. The first device includes an orientation sensor, an inertial position sensor, a first processor, a frequency agile RF transceiver, and a memory device.