Enhanced radio wave exposure mitigation using a combination of proximity and inertial sensor data
Some disclosed devices include an inertial sensor system, a proximity sensor system, an antenna system configured to transmit and receive radio signals and a control system. The control system may be configured for receiving inertial sensor data from the inertial sensor system and controlling the proximity sensor system and/or the antenna system based, at least in part, on the inertial sensor data. In some examples, the control system may be configured for controlling the proximity sensor system and/or the antenna system based, at least in part, on whether the inertial sensor data indicates that the device is being held, is being carried or is on a person's body (e.g., is in the person's pocket).
1. An apparatus, comprising:
an inertial sensor system including at least one inertial sensor;
a proximity sensor system including at least one proximity sensor;
an antenna system configured to transmit and receive radio signals; and
a control system configured for:
receiving inertial sensor data from the inertial sensor system;
determining whether the inertial sensor data indicates that the apparatus is being held, is being carried or is on a person's body; and
deactivating the proximity sensor system in accordance with a maximum permissible exposure limit associated with the apparatus and responsive to determining that the inertial sensor data indicates that the apparatus is being held, is being carried or is on the person's body.
2. The apparatus of claim 1 , wherein the control system is further configured for lowering a transmission power of the antenna system or ceasing transmission by the antenna system if the control system determines that the inertial sensor data indicates that the apparatus is being held, is being carried or is on the person's body.
3. The apparatus of claim 1 , wherein determining whether the apparatus is on the person's body involves determining whether at least some of the apparatus is within a pocket of the person.
4. The apparatus of claim 1 , wherein the proximity sensor system includes at least one radar sensor.
5. The apparatus of claim 1 , wherein the antenna system is configured to transmit at least some radio signals at frequencies of 6 gigahertz or more.
6. The apparatus of claim 1 , wherein the antenna system is configured to transmit beamformed radio signals.
7. The apparatus of claim 1 , wherein the control system is further configured for:
determining whether the inertial sensor data indicates accelerations equal to or exceeding an acceleration threshold; and
deactivating the proximity sensor system if the control system determines that the inertial sensor data indicates one or more accelerations equal to or exceeding the acceleration threshold.
8. The apparatus of claim 1 , wherein determining that the inertial sensor data indicates that the apparatus is being held, is being carried or is on the person's body involves determining whether the inertial sensor data indicates micro-motions characteristic of human contact.
9. The apparatus of claim 1 , wherein the control system is further configured for
implementing, via the control system, a neural network trained to determine whether the inertial sensor data indicates that the apparatus is being held, is being carried or is on a person's body.
10. The apparatus of claim 1 , wherein the inertial sensor system includes at least one accelerometer or at least one gyroscope.
11. The apparatus of claim 1 , wherein the apparatus is a mobile device.
12. A method of controlling a mobile device, comprising:
receiving, by a control system of the mobile device, inertial sensor data from an inertial sensor system of the mobile device;
determining, by the control system, whether the inertial sensor data indicates that the mobile device is being held, is being carried or is on a person's body; and
deactivating, by the control system, a proximity sensor system of the mobile device based, at least in part, on a maximum permissible exposure limit associated with the mobile device and whether the inertial sensor data indicates the mobile device is being held, is being carried or is on the person's body.
13. The method of claim 12 , further comprising lowering a transmission power of an antenna system or ceasing antenna transmissions if the control system determines that the inertial sensor data indicates that the mobile device is being held, is being carried or is on the person's body.
14. The method of claim 12 , wherein determining whether the mobile device is on the person's body involves determining whether at least some of the mobile device is within a pocket of the person.
15. The method of claim 12 , wherein determining whether the mobile device is on the person's body involves determining whether the inertial sensor data indicates accelerations equal to or exceeding an acceleration threshold.
16. The method of claim 12 , wherein the method further comprises implementing a neural network trained to determine whether the inertial sensor data indicates that the mobile device is being held, is being carried or is on the person's body.
17. One or more non-transitory media having software stored thereon, the software including instructions for implementing a method of controlling a mobile device, the method comprising:
receiving, by a control system of the mobile device, inertial sensor data from an inertial sensor system of the mobile device;
determining, by the control system, whether the inertial sensor data indicates that the mobile device is being held, is being carried or is on a person's body; and
deactivating, by the control system, a proximity sensor system of the mobile device based, at least in part, on a maximum permissible exposure limit associated with the mobile device and whether the inertial sensor data indicates the mobile device is being held, is being carried or is on the person's body.
18. The one or more non-transitory media of claim 17 , wherein the method involves lowering a transmission power of an antenna system if the control system determines that the inertial sensor data indicates that the mobile device is being held, is being carried or is on the person's body.
19. An apparatus, comprising:
an inertial sensor system including at least one inertial sensor;
a proximity sensor system including at least one proximity sensor;
an antenna system configured to transmit and receive radio signals; and
control means for:
receiving inertial sensor data from the inertial sensor system;
determining whether the inertial sensor data indicates that the apparatus is being held, is being carried or is on a person's body; and
deactivating the proximity sensor system in accordance with a maximum permissible exposure limit associated with the apparatus and responsive to determining that the inertial sensor data indicates that the apparatus is being held, is being carried or is on the person's body.
20. The apparatus of claim 19 , wherein the control means includes means for lowering a transmission power of the antenna system if the control means determines that the inertial sensor data indicates that the apparatus is being held, is being carried or is on the person's body.