# US 9,435,819 B1 · Autonomous temperature accelerometer sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,819 B1 - Document ID: US9435819B1 - Status: Granted - Kind: B1 - Application number: 13/872,505 - Filed: 2013-04-29 - Granted: 2016-09-06 - Earliest claimed: 2012-04-27 - Assignees: Cree Fayetteville, Inc. - Applicants: Arkansas Power Electronics International, Inc. - Inventors: John Fraley; Bryon Western; Roberto Marcelo Schupbach - Web page: https://patentgrep.com/patent/US9435819B1 ## CPC - G01M 13/045: Acoustic or vibration analysis - G01K 1/024: for remote indication - G01K 13/08: in rotary movement - G01P 15/08: with conversion into electric or magnetic values - G01P 15/09: by piezoelectric pick-up - G01H 1/006: {of the rotor of turbo machines} - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - G01H: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES ## Abstract A turbine environment wireless transmitter for monitoring bearing health inside jet turbines. This transmitter has the ability to operate in 225 to 300 degree Celsius environments and monitor real time bearing temperature and vibration and transmit that data to a centralized system for processing. The system is powered by a built in thermal electric generator, which produces power in response to a thermal gradient across it. The information transmitted is used to monitor and diagnose a bearing operating parameters in real-time and predict a failure event before any damage occurs. ## Claims ### Claim 1 A sensor apparatus configured to operate in a high temperature environment defined as being above two hundred and twenty five degrees celsius, the sensor apparatus comprising: a high temperature power subsystem including a high temperature energy harvesting component electrically connected to a high temperature energy storage component; high temperature power conditioning electronics connected to the high temperature power subsystem; a high temperature sensor connected to the high temperature power subsystem, the high temperature sensor generating a sensor output; a high temperature signal conditioning block connected to receive the sensor output and output a conditioned signal; a high temperature voltage controlled oscillator connected to receive the conditioned signal and output an oscillating signal, the high temperature voltage controlled oscillator being connected to and responsive to a temperature dependent component; and a high temperature amplifier connected to receive the oscillating signal and output a wireless signal to an antenna. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the energy harvesting component comprises a thermal electric generator. ### Claim 3 (depends on 2) The apparatus of claim 2, further comprising a transmitter configured to power condition an output of the thermal electric generator. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the energy storage component comprises a capacitor with an operating range above two hundred and twenty five degrees celsius. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the sensor Comprises a high temperature accelerometer. ### Claim 6 (depends on 5) The apparatus of claim 5, further comprising a transmitter configured to signal condition a charge output of the high temperature accelerometer. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the transmitter is further configured to generate a wireless signal with vibration information and to transmit the wireless signal to a remote location. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the high temperature signal conditioning block comprises a silicon on insulator operational amplifier. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the temperature dependent component comprises a gallium nitride light emitting diode. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the high temperature amplifier comprises a silicon carbide junction gate field-effect transistor. ### Claim 11 (depends on 1) The apparatus of claim 1, further comprising a window ring and a substrate baseplate, the window ring being attached to a top portion of the substrate baseplate. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the substrate baseplate is attached to a main baseplate. ### Claim 13 (depends on 12) The apparatus of claim 12, further comprising a sealing lid which is seam sealed to the window ring. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein the window ring and the sealing lid are made of Kovar, and wherein the substrate baseplate is made of a copper-tungsten alloy. ### Claim 15 (depends on 1) The apparatus of claim 1, further comprising a JFET carrier transistor to generate a radiofrequency carrier signal using a Colpitts oscillator. ### Claim 16 A sensor apparatus configured to operate in a high temperature environment defined as being above two hundred and twenty five degrees celsius, the sensor apparatus comprising: a high temperature power subsystem including a high temperature energy harvesting component electrically connected to a high temperature energy storage component; high temperature power conditioning electronics connected to the high temperature power subsystem; a high temperature sensor connected to the high temperature power subsystem, the high temperature sensor generating a sensor output; a high temperature signal conditioning block connected to receive the sensor output and output a conditioned signal; a high temperature voltage controlled oscillator connected to receive the conditioned signal and output an oscillating signal, the high temperature voltage controlled oscillator comprising a 555 timer integrated circuit connected to a temperature dependent component; and a high temperature amplifier connected to receive the oscillating signal and output a wireless signal to an antenna. ### Claim 17 A sensor apparatus configured to operate in a high temperature environment defined as being above two hundred and twenty five degrees celsius, the sensor apparatus comprising: a high temperature power subsystem including a high temperature energy harvesting component electrically connected to a high temperature energy storage component; high temperature power conditioning electronics connected to the high temperature power subsystem; a high temperature sensor connected to the high temperature power subsystem, the high temperature sensor generating a sensor output; a high temperature signal conditioning block connected to receive the sensor output and output a conditioned signal; a high temperature voltage controlled oscillator connected to receive the conditioned signal and output an oscillating signal, the high temperature voltage controlled oscillator comprising an integrated timer circuit connected to and responsive to a temperature dependent component; and a high temperature amplifier connected to receive the oscillating signal and output a wireless signal to an antenna. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the energy harvesting component comprises a thermal electric generator. ### Claim 19 (depends on 17) The apparatus of claim 17, wherein the sensor comprises a high temperature accelerometer, and wherein the high temperature signal conditioning block comprises a silicon on insulator operational amplifier. ### Claim 20 (depends on 17) The apparatus of claim 17, wherein the temperature dependent component is a temperature dependent resistor configured to vary a frequency of an output of the integrated timer circuit with temperature.