IN-EAR TEMPERATURE SENSORS FOR AR/VR APPLICATIONS AND DEVICES
An in-ear device for immersive reality applications is provided. The device includes an in-ear fixture configured to seal an ear canal of a user, a temperature sensor mounted on the in-ear fixture and configured to receive a temperature signal from the ear canal of the user, and a processor that is coupled to an augmented reality headset, the processor configured to identify a health condition of the user based on the temperature signal. A method for using the above device, a memory storing instructions and a processor that executes the instructions to perform the method are also provided.
1 . A device, comprising:
an in-ear fixture configured to seal an ear canal of a user;
a temperature sensor mounted on the in-ear fixture and configured to receive a temperature signal from the ear canal of the user; and
a processor that is coupled to an augmented reality headset, the processor configured to identify a health condition of the user based on the temperature signal.
2 . The device of claim 1 , wherein the temperature sensor is a contact sensor including a thermocouple electrode adjacent to a skin portion of the ear canal of the user.
3 . The device of claim 1 , wherein the temperature sensor comprises an infrared detector configured to receive an infrared radiation emitted from a body of the user and transmitted through the ear canal.
4 . The device of claim 1 , wherein the temperature sensor comprises a filter to select a radiation bandwidth based on a signal range and a range of bodily temperatures.
5 . The device of claim 1 , wherein the temperature sensor comprises a radiation emitter for calibration of the temperature signal based on an emissivity and an absorptivity of a tissue in the ear canal of the user for a radiation bandwidth used by the temperature sensor.
6 . The device of claim 1 , wherein the temperature sensor is an optical sensor operating with an infrared radiation, the optical sensor including a lens to collect the infrared radiation from a selected point in the ear canal.
7 . The device of claim 1 , wherein the temperature sensor is an optical sensor operating with infrared radiation in a bandwidth within 2 and 4 microns, or within 8 and 14 microns.
8 . The device of claim 1 , wherein the temperature sensor includes an electrical sensor including at least one of a thermocouple or a thermistor.
9 . The device of claim 1 , wherein the processor is configured to combine a waveform with the temperature signal and a waveform with a second temperature signal from an opposite ear of the user to form a combined temperature waveform with reduced noise.
10 . The device of claim 1 , further comprising at least one microphone or a motion sensor configured to provide a cardiovascular signal, wherein the health condition of the user is based on the temperature signal and the cardiovascular signal.
11 . A computer-implemented method, comprising:
receiving, from a temperature sensor, a temperature signal indicative of an inner body temperature of a user of an in-ear device;
forming a temperature waveform with the temperature signal; and
identifying a health condition of the user of the in-ear device based on the temperature waveform.
12 . The computer-implemented method of claim 11 , wherein receiving a temperature signal comprises collecting, with an infrared detector and a filter, an infrared radiation in a pre-selected bandwidth from an ear canal of the user.
13 . The computer-implemented method of claim 11 , wherein receiving a temperature signal comprises filtering an infrared radiation within a bandwidth based on a detection sensitivity over a bodily temperature range.
14 . The computer-implemented method of claim 11 , further comprising modeling a black body emitter having a selected emissivity of an ear canal of the user within a selected bandwidth, and determining the inner body temperature based on the selected emissivity of the ear canal.
15 . The computer-implemented method of claim 11 , wherein receiving a temperature signal comprises emitting an infrared radiation into an ear canal of the user and determining an emissivity and absorbance of a tissue in the ear canal within a pre-selected bandwidth to calibrate the temperature signal.
16 . The computer-implemented method of claim 11 , further comprising receiving, from at least one microphone or a motion sensor, a cardiovascular signal, wherein identifying the health condition of the user is based on the temperature waveform and the cardiovascular signal.
17 . The computer-implemented method of claim 11 , wherein receiving a temperature signal comprises providing an infrared radiation to an in-ear canal and collecting a backscattered infrared radiation to calibrate an emissivity value and absorbance value for the in-ear canal into the temperature waveform.
18 . The computer-implemented method of claim 11 , wherein receiving a temperature signal comprises receiving a voltage value from a thermocouple electrode in contact with an in-ear canal of the user.
19 . The computer-implemented method of claim 11 , wherein identifying a health condition of the user comprises identifying a pattern in the temperature waveform indicative of a disease onset.
20 . The computer-implemented method of claim 11 , wherein identifying a health condition of the user comprises correlating the temperature waveform with cardio-respiratory vital signs of the user.